437 results on '"MAI"'
Search Results
202. Meeting mobile's demands with multicarrier systems.
- Author
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Caldwell, R. and Anpalagan, A.
- Abstract
With the increasing requirements for future wireless applications, OFDM, MC-CDMA, and MC-DS-CDMA have all been considered for 4G wireless systems. These systems have the ability to incorporate very large band widths without sacrificing equalization complexity. The long symbol duration is effective at mitigating ISI, and adaptive modulation or frequency diversity can be used to provide protection against destructive fades. The benefit of MC CDMA is that it experiences frequency diversity because each bit is transmitted over several independently faded subcarriers. If some subcarriers experience destructive fades, diversity combining can be used at the receiver to recover the data. This improves the BER performance over OFDM, and this improvement is more significant as the number of subcarriers is increased. The draw back of MC-CDMA is that it may experience high levels of multiuser access interference (MAI) when the channel is heavily loaded. This occurs because each chip of the PN sequence experiences independent fading, which tends to destroy the orthogonality between spreading sequences. This increases the MAI and degrades the BER performance. Although OFDM, MC-CDMA, and MC-DS-CDMA signals experience a high PAPR, synchronization issues, and ICI, the benefits greatly outweigh these disadvantages. [ABSTRACT FROM PUBLISHER]
- Published
- 2005
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203. Impact of MAI and channel estimation errors on the performance of Rake receivers in UWB communications.
- Author
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D'Amico, A.A., Mengali, U., and Taponecco, L.
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The performance of Rake receivers for ultrawide-bandwidth communications is discussed, taking into account the effects of multiple access interference (MAI) and channel estimation errors. Two alternative signaling formats are considered: time-hopping pulse-position modulation (TH-PPM) and TH pulse-amplitude modulation (TH-PAM). The channel exhibits multipath propagation and its impulse response is either assumed known or is estimated with least squares methods. Computer simulations show that, even with perfect channel knowledge (PCK), TH-PAM is superior to TH-PPM. The superiority increases with the number of users and becomes substantial in the presence of channel estimation errors. An intuitive explanation of this fact is provided. [ABSTRACT FROM PUBLISHER]
- Published
- 2005
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204. FD-MC-CDMA: A Frequency-Based Multiple Access Architecture for High Performance Wireless Communication.
- Author
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Zhiqiang Wu and Nassar, Carl R.
- Subjects
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WIRELESS communications , *CODE division multiple access , *SPREAD spectrum communications , *TELECOMMUNICATION , *CELL phone systems , *DATA transmission systems - Abstract
Multi-carrier code division multiple access (MC-CDMA) demonstrates good probability of error performances in frequency selective fading channels, a direct result of its ability to resolve the available frequency diversity. However, MC-CDMA performances may be limited by degradation due to large multiple-access interference (MAI). Frequency division multi-carrier code division multiple access (FD-MC-CDMA), a novel multiple access architecture proposed in this paper, exploits the available frequency diversity benefits while reducing MAI. Specifically, in- stead of transmitting all users' information bits over all carriers, FD-MC-CDMA employs a subset of carriers to support a subset of users (while maintaining the same overall system capacity and throughput as in MC-CDMA). By careful selection of each sub- set of carriers, the available frequency diversity benefits are fully exploited, while the MAI experienced by each user is reduced. Furthermore, since the number of carriers employed by each user is significantly reduced, the complexity of the truly optimal multiuser detection (MUD) receiver for FD-MC-CDMA is low. An optimal MUD based on the maximum likelihood (ML) criteria is employed to optimize the system performance of FD-MC-CDMA. The pro- posed FD-MC-CDMA (with MUD) provides significantly better bit error rate (BER) performances than traditional MC-CDMA systems with little increase in system complexity. [ABSTRACT FROM AUTHOR]
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- 2005
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205. Multi-Discipline HIV Longitudinal Training Utilizing AETC Resources to Build HIV Care Capacity in Minority-Serving Health Centers.
- Author
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Rosen, David, Abedini, Bonnie R., Jean-Baptiste, Rose, Richetti, Dion, Youngblood, Andrew, and Spooner, Linda
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OCCUPATIONAL training ,HIV ,MEDICAL care ,MEDICAL education ,EDUCATION policy - Abstract
This article describes a multi-disciplinary HIV clinical training model developed and implemented by the Division of AIDS Education at the University of Medicine and Dentistry of New Jersey (UMDNJ)-Center for Continuing and Outreach Education (CCOE), the New Jersey Local Performance Site (LPS) of the New York/New Jersey AIDS Education and Training Center (AETC). The Longitudinal Training (LT) model combines AETC, Minority AIDS Initiative (MAI) and other available training resources into an adaptable framework that can be implemented by any clinical training entity (e.g., other AETCs, Public Health Training Centers, Center for Mental Health Services grantees, state health departments, STD/HIV Prevention Training Centers, etc.) to provide needs-based, multi-discipline longitudinal training of healthcare providers so as to enhance the HIV care capacity of community health centers serving predominantly minority populations. In addition to describing the AETC and MAI Programs, this paper will discuss the methods used in developing the Longitudinal Training model and will include styles of training, identification of program successes and barriers, a composite case study and continuous outcome measures. [ABSTRACT FROM PUBLISHER]
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- 2005
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206. Performance analysis of Volterra-based nonlinear adaptive blind multiuser detectors for DS-CDMA systems
- Author
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Linlin, Guo and Puthusserypady, Sadasivan
- Subjects
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CODE division multiple access , *ALGORITHMS , *WIRELESS communications , *SPREAD spectrum communications - Abstract
The major limitation on the performance and capacity of direct sequence code division multiple access (DS-CDMA) communication systems is the multiple access interference (MAI) due to simultaneous transmission of several users. The linear minimum mean square error (MMSE) detector is a well-known method to suppress MAI adaptively and blindly, however, it is sub-optimal because of the inherent nonlinearity of the system. Therefore, in this paper, two nonlinear blind adaptive interference cancellation algorithms (the exact Newton (EXN) and the approximate Newton (APN)) were proposed and developed based on the 2nd order Volterra expansion. A complete performance analysis of the conventional matched filter (MF) detector, linear adaptive detector (which employs the standard Newton algorithm) and the proposed two nonlinear adaptive (EXN and APN) detectors was carried out in various DS-CDMA systems. Numerical results show that the three Newton type adaptive blind multiuser detectors yield significant bit error ratio (BER) improvement over the conventional MF detector in the presence of strong MAI. Further, the two nonlinear adaptive algorithms always outperformed the linear algorithm. Most attractively, the APN algorithm offers lower computation complexity, higher numerical stability and almost identical BER performance in comparison with the EXN algorithm. [Copyright &y& Elsevier]
- Published
- 2004
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207. A new algorithm for blind adaptive multiuser detection in frequency selective multipath fading channel.
- Author
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Mucchi, L., Morosi, S., Del Re, E., and Fantacci, R.
- Abstract
This paper deals with a modified version of a blind adaptive multiuser detector for direct sequence code-division multiple-access (DS-CDMA) wireless communication systems which is named precombining blind adaptive multiuser detector (PBA-MUD). The main properties of this receiver are low complexity, multiple-access interference mitigation and remarkable near-far resistance in time-varying multipath fading scenarios. In particular, the PBA-MUD is based on a blind adaptive algorithm that allows the detector to avoid deep fading impairments and the cancellation of the desired signal due to signature sequence mismatch. Nevertheless, such a receiver experiences a performance degradation in fast fading channels. In order to overcome this problem, a window reprocessing technique (Del Re et al., 2001) was introduced which yielded a new blind detection algorithm. It will be shown that this receiver, together with this new algorithm [precombining reprocessing window blind adaptive multiuser detector (PWBA-MUD)] allows a high performance without requiring training sequences or the knowledge of the interfering signature waveforms in multipath fast fading channels. [ABSTRACT FROM PUBLISHER]
- Published
- 2004
- Full Text
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208. Receivers with chip-level decision feedback equalizer for CDMA downlink channels.
- Author
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Jinho Choi, Seong Rag Kim, and Cheng-Chew Lim
- Abstract
For the code division multiple access (CDMA) downlink channel, we investigate the decision feedback equalizer (DFE) at chip-level to effectively suppress multiple-access interference (MAI) when the spreading sequences are orthogonal. The structure of the receiver with the chip-level DFE has been investigated and the minimum mean-square error solution has been derived. Due to the inherent structure of the chip-level DFE, some iterative techniques with hard and soft decisions have been proposed. It is shown that the proposed receivers with the chip-level DFE can provide satisfactory performance. In comparison with the adaptive chip-level linear equalizer, the number of users can be doubled by using adaptive chip-level DFE at a bit-error rate of 10-3. Throughout the paper, we assume that scrambled orthogonal codes are used for spreading sequences. [ABSTRACT FROM PUBLISHER]
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- 2004
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209. Severe bronchiectasis.
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Morrissey, Brian and Evans, Samuel
- Abstract
Bronchiectasis is primarily the result of airway injury and remodeling attributable to recurrent or chronic inflammation and infection. The underlying etiologies include autoimmune diseases, severe infections, genetic abnormalities, and acquired disorders. Recurrent airway inflammation and infection may also be the result of allergic or immunodeficiency states such as allergic bronchopulmonary mycoses or HIV/AIDS. Bronchiectasis should be included in the differentiation diagnosis of any patient with chronic respiratory complaints such as cough and sputum production. Early clinical manifestations may be subtle. Hallmarks of severe bron-chiectasis include fetid breath, chronic cough, and sputum production. The associated chronic respiratory infections and airway sepsis are punctuated by episodes of acute exacerbation. Prompt recognition and treatment of bronchiectasis may allow for prevention of disease progression and irreversible loss of lung function. This review of severe non-cystic fibrosis bronchiectasis describes the current pathophysiology, clinical presentations, and management of bronchiectasis. We review how impaired airway clearance and the inability to resolve infection and inflammation creates a vicious cycle of recurrent injury. The common clinical features of bronchiectasis and findings are presented and illustrated by radiographic images. The common species and significance of various organisms often recovered from the distal airways including: tuberculous and environmental mycobacteria, aspergillus, and bacteria such as Pseudomonas aeruginosa will be covered. Management strategies including sputum surveillance, sputum clearance, antimicrobial therapy including antifungal and antimyobacterial agents as well as the evidence for the use of inhalational and anti-inflammatory therapies such as corticosteroids are also discussed. Recommendations for the work-up and therapy of complications including hemoptysis and respiratory failure are presented. [ABSTRACT FROM AUTHOR]
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- 2003
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210. Isotropic air-interface technologies for fourth generation wireless communications.
- Author
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Hsiao-Hwa Chen, Jin-Xiao Lin, Shin-Wei Chu, Chi-Feng Wu, and Guo-Sheng Chen
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WIRELESS communications ,TECHNOLOGICAL innovations ,INTERFACES (Physical sciences) ,ELECTRIC interference ,ELECTRIC noise - Abstract
To implement 4G wireless that should deliver a much higher data-rate than that possible in the current 3G systems, development of innovative air-link technologies is the key. This article reviews our on-going research activities in the design of ‘isotropic air-interface technologies’ capable of substantially improving air-link performance of a CDMA wireless system. To enable bidirectional high-speed data transmission in the future 4G systems, the problem associated with incompatible up- and down-link performance in 2–3G systems has to be addressed. The importance of the issue becomes even more evident due to the fact that the future wireless needs to support ‘mobile server’ applications, where a mobile terminal may act as a data source such that up-link traffic can possibly exceed that in down-link. In this article, two alternative methods enabling isotropic air-interface will be discussed, either using ‘isotropic spreading techniques’ that ensure a homogeneous link-performance regardless of its operation mode (synchronous or asynchronous), or relying on a precision up-link synchronization control techniques to pave a way for successful application of orthogonal codes in up-link channels, which otherwise are asynchronous and destroy the ‘orthogonality’ amongst the codes. The isotropic spreading techniques can minimize multiple access interference (MAI) and multipath-interference (MI), the prevalent impairing effects in the current 2–3G systems. This article will introduce a promising complete complementary CC/DS-CDMA scheme based on isotropic spreading techniques, which carries several extremely attractive properties such as MAI-free, MI-free, near–far effect resistance and low hardware complexity. The performance of the proposed CC/DS-CDMA scheme is limited only by noise. To implement up-link synchronization control, smart antenna and GPS-based techniques play an important role and a working example based on TD-SCDMA standard will be illustrated. Finally, we will also discuss the TDD techniques and its significance to implement isotropic air-interface technologies for the future 4G systems. Copyright © 2003 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2003
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211. Batch processing algorithms for blind equalization using higher-order statistics.
- Author
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Chong-Yung Chi, Ching-Yung Chen, Chil-Horng Chen, and Chih-Chun Feng
- Abstract
Statistical signal processing has been one of the key technologies in the development of wireless communication systems, especially for broadband multiuser communication systems which severely suffer from intersymbol interference (ISI) and multiple access interference (MAI). This article reviews batch processing algorithms for blind equalization using higher-order statistics for mitigation of the ISI induced by single-input, single-output channels as well as of both the ISI and MAI induced by multiple-input, multiple-output channels. In particular, this article reviews the typical inverse filter criteria (IFC) based algorithm, super-exponential algorithm, and constant modulus algorithm along with their relations, performance, and improvements. Several advanced applications of these algorithms are illustrated, including blind channel estimation, simultaneous estimation of multiple time delays, signal-to-noise ratio (SNR) boost by blind maximum ratio combining, blind beamforming for source separation in multipath, and multiuser detection for direct sequence/code division multiple access (DS/CDMA) systems in multipath. [ABSTRACT FROM PUBLISHER]
- Published
- 2003
- Full Text
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212. A novel one-shot decorrelator in CDMA systems.
- Author
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Du, Zheng and Zhu, Jinkang
- Abstract
A novel one-shot decorrelator for asynchronous CDMA systems is developed. Compared with existing one-shot decorrelator, it can reduce complexity and has better performance while eliminating all MAI. This decorrelator is shown to be near-far resistant in both AWGN and fading channel. [ABSTRACT FROM AUTHOR]
- Published
- 2002
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213. Trellis-coded asynchronous optical CDMA systems.
- Author
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Maw-Yang Liu and Hen-Wai Tsao
- Abstract
Since optical code division multiple access (CDMA) is an interference-limited system, we propose a system employing trellis-coded scheme and double optical hardlimiters (TC-DHLs) to alleviate the adverse impact of multiple access interference. For asynchronous transmission, optical orthogonal code (OOC) is utilized as signature sequence. System performance is evaluated under the chip synchronous case among different users, and thermal noise, avalanche photodiode (APD) noise, and interference are taken into consideration. Numerical results show that our proposed scheme can further reduce the error floor up to several orders over systems that using only double optical hardlimiters [ABSTRACT FROM PUBLISHER]
- Published
- 2001
- Full Text
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214. 3D Coseismic Deformation Field and Source Parameters of the 2017 Iran-Iraq Mw7.3 Earthquake Inferred from DInSAR and MAI Measurements
- Author
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Yuxin Liu, Zhiheng Wang, and Rui Zhang
- Subjects
010504 meteorology & atmospheric sciences ,Science ,Combined use ,mai ,Slip (materials science) ,010502 geochemistry & geophysics ,01 natural sciences ,the 2017 iran-iraq mw7.3 earthquake ,Physics::Geophysics ,law.invention ,law ,Interferometric synthetic aperture radar ,Radar ,source parameters ,0105 earth and related environmental sciences ,Geodesy ,The 2017 Iran-Iraq Mw7.3 earthquake ,DInSAR ,MAI ,3D coseismic deformation fields ,3d coseismic deformation fields ,dinsar ,Epicenter ,Geological survey ,General Earth and Planetary Sciences ,Seismic moment ,Fault slip ,Geology - Abstract
The coseismic slip on the main fault related to the 2017 Iran-Iraq Mw7.3 earthquake has been investigated by previous studies using DInSAR (differential interferometric synthetic aperture radar) ground deformation measurements. However, DInSAR observation is not sensitive to the ground deformation in the along-track (AT) direction. Therefore, only the one-dimensional (1D) DInSAR coseismic deformation field measurements, derived in the LOS (line-of-sight) direction of radar, was applied in source parameters estimation. To further improve the accuracy of the fault slip inversion, the 3D (three-dimensional) coseismic deformation fields were reconstructed in the first place, by a combined use of the DInSAR and MAI (multiple aperture InSAR) measurements. Subsequently, the LOS and 3D deformation data sets were used as the constraint respectively, to perform a two-step inversion scheme to find an optimal geometry and slip distribution on the main fault. The comparative analysis indicated that the 3D coseismic deformation data sets improved the inversion-accuracy by 30%. Besides, the fault invention results revealed a deep dislocation on a NNW trending fault (the strike is 352.63°) extending about 60 km, along the fault dips 14.76° to the ENE. The estimated seismic moment is 8.44 × 1019 Nm (Mw7.3), which is close to the solution provided by USGS (United States Geological Survey). The slip distributed at the depth between 12 and 18 km, and the peak slip of 6.53 m appears at the depth of 14.5 km left near the epicenter. Considering the geological structure in the earthquake region and fault source-parameters, it comes to a preliminary conclusion that the ZMFF (the Zagros Mountain Front fault) should be responsible for the earthquake. In general, this paper demonstrated the superiority of using the 3D coseismic deformation fields on source parameters estimation.
- Published
- 2019
215. Effets de facteurs exogènes sur les gamètes masculins et leur génome : conséquences potentielles d'une élévation modérée de la température des testicules et des épididymes sur la qualité du gamète
- Author
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Abdelhamid, Mohamed Hadi Mohamed, Groupe de recherche en fertilité humaine ( GRFH), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Université Paul Sabatier - Toulouse III, Louis Bujan, and Safouane Hamdi
- Subjects
Sperm morphology ,MAI ,Men ,Testicule ,Aneuploidy ,Température ,[SDV.BDLR.RS]Life Sciences [q-bio]/Reproductive Biology/Sexual reproduction ,Aneuploïdie ,Epididyme ,Testis ,Spermatogenesis ,Morphologie ,Hommes ,Spermatogenèse - Abstract
Lifestyle exposures including temperature have been studied in relationship to male reproductive health. In this project, we focused on two main parameters linked to infertility after testicular exposure of temperature. We evaluated the effects of a mild testis temperature increase (+2°C) on sperm morphology and sperm aneuploidy in five healthy men and examined its potential reversibility. We used 27 fertile men for comparison of results (control group), and designed an experimental protocol that induced in five healthy fertile men, an increase of testicular and epididymal temperature by maintained the testes in a supra-scrotal position by means of specially designed underwear worn 15 ± 1 hours daily consecutive days. The first part of my thesis was dedicated to the study of the effects of a mild testis temperature increase (+2°C) on sperm morphology and multiple anomalies index (MAI). We observed that a significant impact on sperm morphology and MAI as early as days 20 and 34 reflecting an effect on the spermiogenesis and meiosis stages. This drastic effect was present during the entire heated period and recovery of the values before heating was observed at day193. In the second part, sperm aneuploidies of chromosomes X, Y, 18 were analyzed by fluorescence in situ hybridization (FISH) before, during and after a mild testis temperature increase. We found that a signi?cant increase in total sperm aneuploidy, sex disomy and nullisomy at 45 days post-heating. Moreover, since increased abnormal sex disomy XY18, sex nullisomy and total sperm aneuploidy values were observed at the same time, these effects were completely reversed at least two spermatogenesis cycles after heat exposure. Our results may have clinical implications in male infertility, the effect of a mild testis temperature increase was reversible but it seems advisable to allow at least one or two cycles of spermatogenesis to pass in order to recover normal exacting function.; L'impact des expositions de la vie courante, et en particulier de la température, sur la reproduction masculine est très étudié. Dans ce projet, nous avons étudié deux principaux paramètres liés à l'infertilité après une exposition testiculaire à une augmentation modérée de température (+2°C) chez des hommes sains : la morphologie et l'aneuploïdie du spermatozoïde et exploré leur potentielle réversibilité. Nous avons conçu un protocole expérimental qui a impliqué 5 hommes fertiles et une population témoin de 27 autres hommes fertiles. L'augmentation de température testiculaire et épididymaire a été obtenue en maintenant les testicules dans une position supra-scrotale au moyen de sous-vêtements spécialement conçu, portés 15 +/- 1heure par jour pendant 120 jours consécutifs. La première partie de ma thèse a été consacrée à l'étude de l'augmentation de température sur la morphologie des spermatozoïdes et l'indice des anomalies multiples (IAM). Nous avons observé un impact significatif sur la morphologie du sperme et l'IAM entre le 20ème et 34ème jour reflétant un effet sur les stades de spermiogenèse et de méiose. Cet effet drastique a été présent pendant toute la période de chauffage et la récupération des valeurs initiales a été observée au 73ème jour. Dans une deuxième partie, les aneuploïdies des chromosomes X,Y, 18 ont été analysées par hybridation in situ par la fluorescence (FISH) avant, pendant et après l'augmentation modérée de température. Nous avons constaté une augmentation significative de l'aneuploïdie totale du sperme, de la disomie sexuelle et de la nullisomie au 45ème jour après chauffage. Ces effets ont été complétement inversés après deux cycles de spermatogenèse après l'exposition à la chaleur. Ces résultats confirment l'impact de la température sur la spermatogenèse et peuvent avoir des implications cliniques dans l'infertilité masculine et notamment le concept de réversibilité après au moins deux cycles de spermatogenèse sans exposition à la chaleur.
- Published
- 2019
216. Analysis of Agronomic Drought in a Highly Anthropogenic Context Based on Satellite Monitoring of Vegetation and Soil Moisture.
- Author
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Zribi, Mehrez, Nativel, Simon, and Le Page, Michel
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VEGETATION monitoring , *MODIS (Spectroradiometer) , *NORMALIZED difference vegetation index , *GROUND cover plants , *SOIL moisture , *ANTHROPOGENIC soils , *DROUGHTS - Abstract
This paper aims to analyze agronomic drought in a highly anthropogenic, semiarid region, the western Mediterranean region. The proposed study is based on Moderate-Resolution Imaging Spectroradiometer (MODIS) and Advanced SCATterometer (ASCAT) satellite data describing the dynamics of vegetation cover and soil water content through the Normalized Difference Vegetation Index (NDVI) and Soil Water Index (SWI). Two drought indices were analyzed: the Vegetation Anomaly Index (VAI) and the Moisture Anomaly Index (MAI). The dynamics of the VAI were analyzed as a function of land cover deduced from the Copernicus land cover map. The effect of land cover and anthropogenic agricultural activities such as irrigation on the estimation of the drought index VAI was analyzed. The VAI dynamics were very similar for the shrub and forest classes. The contribution of vegetation cover (VAI) was combined with the effect of soil water content (MAI) through a new drought index called the global drought index (GDI) to conduct a global analysis of drought conditions. The implementation of this combination on different test areas in the study region is discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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217. Marker-assisted introgression (MAI) of almond genes into the peach background: a fast method to mine and integrate novel variation from exotic sources in long intergeneration species
- Author
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Serra, Octávio, Donoso, José Manuel, Picañol, Roger, Batlle, Ignasi, Howad, Werner, Eduardo, Iban, and Arús, Pere
- Published
- 2016
- Full Text
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218. To Call Dance Japanese: Nihon Buyô as Ethnic Dance
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Pronko, Leonard, Hall, Jonathan M., Shay, Anthony, book editor, and Sellers-Young, Barbara, book editor
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- 2016
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219. Current Therapy for Nontuberculous Mycobacterial Pulmonary Disease
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Steele, Hilary P., Brumble, Lisa M., and Johnson, Margaret M.
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- 2015
- Full Text
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220. BER calculation in DS/CDMA over Rayleigh fading channel with power control error using fuzzy systems
- Author
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Jabrane, Y., Iqdour, R., Essaid, B. Ait, and Naja, N.
- Subjects
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ERROR rates , *CODE division multiple access , *RAYLEIGH waves , *NUMERICAL analysis , *CONTROL theory (Engineering) - Abstract
Abstract: We propose in this work, a simple method to calculate the bit error rate (BER) performance of a direct sequence code division multiple access (DS/CDMA) system over a Rayleigh multipath fading with power control error for both coherent and noncoherent reception, the RAKE structure receivers under consideration employ despreading sequences weighted (WDS) by exponential chip weighting waveforms. Numerical results show that the proposed approach reduce complexity and time of BER’s computing, then its performance does not undergo any degradation. [Copyright &y& Elsevier]
- Published
- 2009
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221. Association of clinical outcomes with potentially inappropriate medications determined by implicit criteria MAI in elderly patients with gastrointestinal diseases
- Author
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Kukolić, Ivana and Ortner Hadžiabdić, Maja
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PNL ,elderly people ,MAI ,clinical outcomes ,PIM ,BIOMEDICINE AND HEALTHCARE. Pharmacy. Pharmacy ,osobe starije životne dobi ,klinički ishodi ,potencijalno neprikladni lijekovi ,potentially inappropriate medications ,BIOMEDICINA I ZDRAVSTVO. Farmacija. Farmacija ,Medication Appropriateness Index ,osobe starije životne dobi, potencijalno neprikladni lijekovi (PNL), Indeks prikladnosti lijekova (MAI), klinički ishodi ,Indeks prikladnosti lijekova - Abstract
Cilj istraživanja bio je odrediti učestalost propisivanja potencijalno neprikladnih lijekova pomoću implicitnog protokola Indeksa prikladnosti lijekova (MAI) te odrediti njihovu povezanost s kliničkim ishodima. Istraživanje je provedeno na Zavodu za gastroenterologiju Kliničke bolnice Dubrava u razdoblju od listopada 2014. do listopada 2015. godine, a uključivalo je pacijente starije od 65 godina s bolestima probavnog sustava ili neoplazmama. U razdoblju od tri do pet mjeseci nakon otpusta iz bolnice pacijenti su kontaktirani u svrhu prikupljanja podataka o kliničkim ishodima. Na temelju prikupljenih podataka o terapiji pacijenata tijekom hospitalizacije, za svaki lijek određivala se njegova prikladnost, odnosno neprikladnost za svaki od MAI kriterija. Iz dobivenih rezultata izračunati su indeksi prikladnosti lijekova i indeksi prikladnosti cjelokupne terapije pacijenta. Za utvrđivanje povezanosti kliničkih ishoda i lijekova korišteni su Sažetci opisa svojstava lijeka. Ukoliko je utvrđena povezanost, za određeni lijek se promatralo je li bio neprikladan prema pojedinom MAI kriteriju. Također, analizirana je povezanost indeksa prikladnosti s utvrđenim kliničkim ishodima. U istraživanje je bilo uključeno 62 pacijenata prosječne životne dobi 73,8 ± 5,5 godina koji su uzimali 7,1 ± 3,5 lijekova te su imali 5,9 ± 2,9 dijagnoza. MAI analizom određena su 304 (68,6%) potencijalno neprikladna lijeka kod 60 (96,8%) ispitanika. Najviše neprikladnih lijekova utvrđeno je za kriterije koji su ispitivali jesu li dane ispravne upute (24,8%), postojanje indikacije (19,6%) i postojanje lijek-lijek interakcija (14,9%). Srednja vrijednost indeksa prikladnosti lijekova iznosila je 2,2 ± 2,3, a srednja vrijednost indeksa prikladnosti cjelokupne terapije pacijenata bila je 15,9 ± 10,9. Najviše neprikladnih lijekova utvrđeno je iz ATK skupine A (probavni sustav i mijena tvari) i C (kardiovaskularni sustav), a najveći indeks prikladnosti utvrđen je za skupine S (osjetila) (6,50 ± 0,71 ) i M (koštano mišićni sustav) (5,25 ± 3,08). Od 10 lijekova za koje je ustanovljena povezanost s kliničkim ishodima, samo četiri lijeka su bila neprikladna za jedan ili više MAI kriterija. Nije otkrivena statistički značajna korelacija između broja utvrđenih kliničkih ishoda kod pojedinog pacijenta i indeksa prikladnosti (p=0,300). Također, nije otkrivena statistički značajna razlika između indeksa prikladnosti pacijenata s ili bez pojedinog kliničkog ishoda. Izuzetak je ponovna hospitalizacija za koju je indeks prikladnosti ponovno hospitaliziranih pacijenata bio značajno niži nego u pacijenata koji nisu bili ponovno hospitalizirani (11,00 ± 5,96 naspram 17,61 ± 11,77; p=0,019). Indeks prikladnosti lijekova je osjetljiv protokol kojim je otkrivena visoka prevalencija potencijalno neprikladnih lijekova, ali nije utvrđena njihova povezanost s kliničkim ishodima. The aim of this study was to determine the prevalence of potentially inappropriate medications (PIM) used by implicit criteria Medication Appropriateness Index (MAI) and to determine the association between PIM and clinical outcomes. The study was conducted at the Department of Gastroenterology of Clinic for Internal Medicine, University Hospital Dubrava from October 2014 to October 2015 and included patients older than 65 years with the disease of digestive system or neoplasms. Clinical outcomes were obtained by telephone interview in the period of three to five months after discharge from the hospital. Based on collected data of patient's therapy during hospital discharge, each drug was assessed to determine whether it was appropriate based on ten MAI criteria and subsequently MAI score per drug, as well as MAI score per patient were calculated. Summaries of product characteristics (SmPC) were used to determine association between clinical outcomes and drugs. For drugs which were associated with the clinical outcomes, additional analysis were done with the aim to determine if the drug was inappropriate according to any of MAI criteria. Moreover, the association between MAI score and clinical outcomes was analysed. The study included 62 patients with mean age 73,8 ± 5,5 years who used on average 7,1 ± 3,5 drugs and had 5,9 ± 2,9 diagnosis. 304 (68,6%) drugs were rated as inappropriate and they were used by 60 (96,8%) examinees. The percentage of inappropriate ratings was the highest for correct directions (24,8%), indication (19,6%) and drug-drug interactions (14,9%). The mean MAI score per drug was 2,2 ± 2,3 and the mean MAI score per patient was 15,9 ± 10,9. ATC classes A (alimentary tract and metabolism) and C (cardiovascular system) were most frequently prescribed inappropriately, while the highest MAI score was assessed for classes S (sensory organs) (6,50 ± 0,71 ) and M (musculo-skeletal system) (5,25 ± 3,08). Amongst ten drugs which were associated with clinical outcomes, only four of them were rated inappropriate for one or more MAI criteria. The number of clinical outcomes was not significantly correlated with higher MAI scores (p=0,300). Moreover, the difference in mean MAI scores between patients with and without recorded clinical outcomes was not statistically significant. Only rehospitalisation was identified as clinical outcome with significantly higher MAI scores compared to the patients who did not demand hospitalization (17,61 ± 11,77 vs 11,00 ± 5,96; p=0,019). Medication Appropriateness Index is sensitive measure which identifies high prevalence of potentially inappropriate medications, but its association with clinical outcomes was not determined.
- Published
- 2018
222. Validation of Metacognitive Awareness Inventory in Academic Stage of Undergraduate Medical Education
- Author
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Diantha Soemantri and Rukman Abdullah
- Subjects
validation ,lcsh:R5-920 ,lcsh:R ,factor analysis ,lcsh:Medicine ,mai ,lcsh:Medicine (General) ,metacognition - Abstract
Medical students are expected to improve critical thinking, clinical reasoning and problem solving skills. These cognitive attributes need to be supported with metacognitive skills. Students with better metacognitive ability will be able to synergize their learning with self-reflection strategies to achieve learning target. One of the tools to assess students’ metacognitive skills is Metacognition Awareness Inventory (MAI). This study is aimed to validate Indonesian MAI in the academic stage of undergraduate medical education and was done on May-June 2014 at faculty of medicine Universitas Malahayati Bandar Lampung. This study used cross-sectional design consisted of 3 stages: language adaptation, pilot study and validation study. Validation study involved 1200 medical students. Factor analysis was conducted to identify factors of MAI. Language adaptation and pilot study produced Indonesian MAI which contains the same number of items. There were 757 MAI questionnaires eligible for analysis. Extraction of the 51-item MAI using principal component analysis (PCA) produced 5 factors which were cognitive preparation, supervision, management, strategy and evaluation. The Cronbach alpha value for the whole Indonesian MAI was 0.904. Indonesian MAI complies to construct validity criteria, specifically content validity and internal consistency. MAI is useful as an instrument to assess metacognitive ability in the academic stage of undergraduate medical education.
- Published
- 2018
223. 'Sur les ponts de mai, on y danse, on y danse, pas toujours en rond !', éditorial, Juristourisme, Dalloz, n° 208, mai 2018, p. 3
- Author
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Devès, Claude, Centre Michel de l'Hospital : laboratoire de recherche en sciences juridiques et politiques (CMH ), Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), and VITALIEN-CHARBONNEL, Audrey
- Subjects
[SHS.DROIT]Humanities and Social Sciences/Law ,[SHS.DROIT] Humanities and Social Sciences/Law ,ponts ,mai ,ComputingMilieux_MISCELLANEOUS - Abstract
National audience
- Published
- 2018
224. Somos o que comemos - a influência da dieta no cancro colorretal
- Author
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Correia, Ana Rita Roxo Martins Caril, Tralhão, José Guilherme Lopes Rodrigues, and Santos, Lélita Conceição
- Subjects
Dieta Mediterrânica ,Colorectal Cancer ,Cancro Colorretal ,Fatores de risco ,Mediterranean Diet ,Risk factors ,MAI ,Central Region of Portugal ,Região Centro de Portugal - Abstract
Trabalho Final do Mestrado Integrado em Medicina apresentado à Faculdade de Medicina Introdução: A dieta e o estilo de vida desempenham um papel significativo no desenvolvimento do cancro. O tipo de dieta parece explicar cerca de 30% a 50% da incidência mundial de cancro colorretal (CCR). No entanto, dada a complexidade da etiologia, esta associação ainda não é bem entendida. A dieta mediterrânica é considerada um dos padrões alimentares mais saudáveis, cuja determinação é feita através de um índice de adesão denominado Mediterranean Adequacy Index (MAI). O objetivo principal deste trabalho foi perceber a influência da dieta na prevenção do CCR na população da Região Centro de Portugal.Métodos: O estudo foi realizado com 266 (164 controlo; 102 portadores de CCR) habitantes da Região Centro, submetidos a um questionário de frequência alimentar (QFA) que permitiu obter dados sobre o consumo de cada alimento e a sua conversão em nutrientes. O índice de MAI foi determinado dividindo a soma das percentagens de energia alimentar dos grupos de alimentos típicos da dieta mediterrânea pelas percentagens do grupo de alimentos não característicos.Resultados: A análise dos dados evidenciou um maior consumo de leite meio gordo, carnes vermelhas, carnes brancas e peixe, óleo, cereais, doces, hortaliças, legumes, frutas frescas e bebidas alcoólicas pelos indivíduos com CCR em comparação com os indivíduos controlo. Em relação aos hábitos alimentares chegou-se à conclusão que os indivíduos com diagnóstico de CCR estão mais horas sem comer e praticam menos exercício físico. No que diz respeito aos fatores de risco descritos para o CCR, os indivíduos com este diagnóstico são mais obstipados, e têm um valor de IMC que traduz excesso de peso. Foi elaborada análise multivariada recorrendo a um modelo de regressão logística, tendo demonstrado que os indivíduos são mais propensos a desenvolver CCR se forem obstipados e se estiverem mais horas sem comer entre as refeições.Discussão/Conclusão: Verificou-se através do cálculo do MAI que existem diferenças entre os grupos em estudo, apesar de apresentarem um baixo grau de adesão à dieta mediterrânica. Considera-se que o aumento do tamanho da amostra poderá permitir estabelecer relações mais evidentes entre o diagnóstico de CCR e o padrão alimentar da população da região centro. Introduction: Diet and lifestyle play a significant role in the development of cancer. The type of diet seems to account for about 30% to 50% of the worldwide incidence of colorectal cancer (CRC). However, given the complexity of CRC etiology, this association remains poorly understood. The Mediterranean diet is considered one of the healthiest dietary habits. The adherence to Mediterranean diet can be determined through an index called Mediterranean Adequacy Index (MAI). This study aims to understand the influence of diet on the prevention of CRC in the population of the central region of Portugal.Methods: The study was carried out with 266 (164 control, 102 CRCs) inhabitants of the central region. A food frequency questionnaire (FFQ) was used to obtain data on the food consumption and its conversion into nutrients. MAI index was determined by dividing the sum of the percentage of total energy intake from typical Mediterranean food groups by the percentage of the total energy intake from non-typical Mediterranean food groups.Results: Data analysis showed a higher consumption of semi-skimmed milk, red meat, white meat and fish, oil, cereals, sweets, vegetables, fresh vegetables and alcoholic beverages by individuals with CRC in comparison with control subjects. Regarding the individuals' eating habits, it was concluded that individuals with a diagnosis of CRC have longer fasting periods and practice less exercise. Concerning the risk factors predisposing to CRC, individuals with CRC are more obstipated and have a BMI value corresponding to overweight. A multivariate analysis using a logistic regression model demonstrated that individuals are more likely to develop CRC if they are obstipated and if they skip more than one meal per day.Discussion / Conclusion: The MAI index values allowed us to conclude that there are differences between the groups under study, although both present a low degree of adherence to the Mediterranean diet. Increasing the sample size may allow establishing more evident relationships between the diagnosis of CRC and the food pattern of the population of the central region of Portugal.
- Published
- 2018
225. Improved multi‐stage clustering‐based blind equalisation in interference‐limited CDMA environments.
- Author
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Mitra, R. and Bhatia, V.
- Abstract
The improved multi‐stage clustering (IMSC)‐based blind equalisation algorithm proposed by Mitra and colleagues in 2011 gave rise to significant improvements in terms of performance metrics as compared with its state‐of‐the‐art counterparts. However, the present authors' research studies show that IMSC performance degrades significantly for multiple access interference (MAI) in code‐division multiplexing access (CDMA) systems. To mitigate MAI, code filtering by orthogonal Hadamard codes is a popular practice to minimise the interference. Code‐filtering techniques have been used in the past in which a de‐correlating transform (inverse of an orthonormal Hadamard matrix) has been incorporated into the cost function of the parent algorithm (which can be any traditional equalisation algorithm). A hybrid equalisation scheme is suggested which combines IMSC and code‐filtering, so as to mitigate interference in CDMA environments. The code‐filtered IMSC shows better performance than any of the previously proposed algorithms. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
226. Performance Evaluation of Different SAR-Based Techniques on the 2019 Ridgecrest Sequence.
- Author
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Polcari, Marco, Palano, Mimmo, Moro, Marco, and Balz, Timo
- Subjects
- *
SHEAR zones , *FOURTH of July , *METADATA , *SURFACE fault ruptures , *EARTHQUAKE aftershocks - Abstract
We evaluated the performances of different SAR-based techniques by analyzing the surface coseismic displacement related to the 2019 Ridgecrest seismic sequence (an Mw 6.4 foreshock on July 4th and an Mw 7.1 mainshock on July 6th) in the tectonic framework of the eastern California shear zone (Southern California, USA). To this end, we compared and validated the retrieved SAR-based coseismic displacement with the one estimated by a dense GNSS network, extensively covering the study area. All the SAR-based techniques constrained the surface fault rupture well; however, in comparison with the GNSS-based coseismic displacement, some significant differences were observed. InSAR data showed better performance than MAI and POT data by factors of about two and three, respectively, therefore confirming that InSAR is the most consolidated technique to map surface coseismic displacements. However, MAI and POT data made it possible to better constrain the azimuth displacement and to retrieve the surface rupture trace. Therefore, for cases of strike-slip earthquakes, all the techniques should be exploited to achieve a full synoptic view of the coseismic displacement field. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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227. Mapping Complete Three-Dimensional Ice Velocities by Integrating Multi-Baseline and Multi-Aperture InSAR Measurements: A Case Study of the Grove Mountains Area, East Antarctic.
- Author
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Zheng, Wanji, Hu, Jun, Liu, Jihong, Sun, Qian, Li, Zhiwei, Zhu, Jianjun, Wu, Lixin, and Rees, Gareth
- Subjects
- *
SYNTHETIC aperture radar , *DIGITAL elevation models , *VELOCITY , *DEFORMATION of surfaces , *ANTARCTIC ice , *MASS budget (Geophysics) , *GLACIERS - Abstract
The Antarctic is one of the most sensitive areas to climate change, and ice velocity is a fundamental parameter for quantitatively assessing the glacier mass balance. Interferometric synthetic aperture radar (InSAR), a powerful tool for monitoring surface deformation with the advantages of having high precision and wide coverage, has been widely used in determining ice velocity in the Antarctic. However, the mapping of complete three-dimensional (3D) ice velocities is greatly limited by the imaging geometries and digital elevation model (DEM)-induced errors. In this study, we propose the integration of multibaseline and multiaperture InSAR measurements from the ENVISAT ASAR datasets to derive complete 3D ice velocities in the Grove Mountains area of the Antarctic. The results show that the estimated complete 3D ice velocities are in good agreement with MEaSUREs and GPS observations. Compared with the conventional 2D and quasi-3D ice velocities, the complete 3D ice velocities can effectively eliminate the effects of DEM errors and elevation changes and are also capable of retrieving the thickness change of the ice, which provides important information on the origin of mass transition. [ABSTRACT FROM AUTHOR]
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- 2021
- Full Text
- View/download PDF
228. Backsliding permitted in investment treaty
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Hosking, R
- Published
- 1997
229. Seasonal Divergent Tree Growth Trends and Growth Variability along Drought Gradient over Northeastern China
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Cicheng Zhang, Bingyan Hao, Xiaofei Jiang, Tingting Pei, Yuanqiao Li, Yaqin Tong, Fangzhong Shi, Yan Bai, Xiuchen Wu, Xiao-Yan Li, Xiaofan Yang, and Pei Wang
- Subjects
0106 biological sciences ,Biogeochemical cycle ,010504 meteorology & atmospheric sciences ,NDVI ,interannual variability ,Global warming ,MAI ,Climate change ,Forestry ,lcsh:QK900-989 ,010603 evolutionary biology ,01 natural sciences ,Normalized Difference Vegetation Index ,Divergence ,tree ring chronology ,lcsh:Plant ecology ,Temperate climate ,Spatial ecology ,Period (geology) ,Environmental science ,Physical geography ,drought gradient ,0105 earth and related environmental sciences - Abstract
With the increasing temperature and intensified drought, global climate change has profound impacts on tree growth in temperate regions, which consequently regulates terrestrial-atmosphere biogeochemical processes and biophysical feedbacks. Thus, increasing numbers of studies have addressed the long-term annual trends in tree growth and their response to climate change at diverse spatial scales. However, the potential divergence in tree growth trends and growth variability (represented by coefficient of variance) in different seasons across large-scale climate gradients remains poorly understood. Here, we investigated the tree growth trends and growth variability in different seasons across diverse drought conditions in forested regions over northeastern China during the period 1982&ndash, 2015, using both remote sensing observations and in situ tree-ring measurements. We found clear seasonal divergence in tree growth trends during 1982&ndash, 2015, and the apparent increase was mainly observed in spring and autumn, attributed mainly to the increase in spring temperature and autumn solar radiation, respectively, but not in summer. The magnitudes of increasing trends in tree growth decrease with the increase of the multi-year average dryness index (MAI) in semi-arid areas (1.5 <, MAI <, 4.0) in all seasons. We further revealed that the interannual variability in tree growth was much larger in the semi-arid regions than in the humid and semi-humid regions in all seasons, and tree growth variability was significantly and negatively correlated with the variations in temperature and water deficit. Our findings improve our understanding of seasonal divergence in tree growth trends and provide new insights into spatial patterns in forest vulnerability in a warmer and drier climate.
- Published
- 2019
230. Least squares-based receive antenna selection for MIMO spatial multiplexing systems with linear receivers.
- Author
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Lin, Z., Premkumar, A.B., and Madhukumar, B.S.
- Abstract
In this letter, a novel receive antenna selection technique is proposed for multiple input multiple output (MIMO) spatial multiplexing systems with linear receivers in the presence of unknown interference. This antenna selection technique is directly implemented based on training sample sequence under the least squares (LS) criterion. It avoids the channel estimation and retain the diversity benefit by antenna selection in the presence of unknown multiple access interference (MAI). In addition, practical implementation with manageable complexity is made possible by extending the fast backward greedy algorithm (BGA) into the proposed antenna selection algorithm. [ABSTRACT FROM PUBLISHER]
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- 2006
- Full Text
- View/download PDF
231. Matching pursuit-based tap selection technique for UWB channel equalization.
- Author
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Lin Zhiwei, Premkumar, A.B., and Madhukumar, A.S.
- Abstract
In this letter, matching pursuit (MP) based tap selection technique is proposed and applied to ultra wideband (UWB) indoor channel equalization in the presence of inter symbol interference (ISI) and multiple access interference (MAI). Given the limited training sample support, quadratic constraint is incorporated into MP algorithm to insure the robustness for tap selection. The proposed method is shown to outperform the conventional minimum mean square error (MMSE) equalizer significantly given the same amount of training symbols. [ABSTRACT FROM PUBLISHER]
- Published
- 2005
- Full Text
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232. Blind adaptive code-constrained constant modulus algorithms for CDMA interference suppression in multipath channels.
- Author
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de Lamare, R.C. and Sampaio-Neto, R.
- Abstract
A code-constrained constant modulus (CCM) design criterion for linear receivers is investigated for direct sequence code division multiple access (DS-CDMA) in multipath channels based on constrained optimization techniques. A computationally efficient recursive least squares (RLS) type algorithm for jointly estimating the parameters of the channel and the receiver is developed in order to suppress multiaccess (MAI) and inter-symbol interference (ISI). An analysis of the method examines its convergence properties and simulations under nonstationary environments show that the novel algorithms outperform existent techniques. [ABSTRACT FROM PUBLISHER]
- Published
- 2005
- Full Text
- View/download PDF
233. Reduced-rank interference suppression for DS-CDMA based on interpolated FIR filters.
- Author
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de Lamare, R.C. and Sampaio-Neto, R.
- Abstract
Reduced-rank receivers based on interpolated finite impulse response (FIR) filters for direct sequence code division multiple access (DS-CDMA) systems are proposed and a novel scheme where the interpolator is rendered time-varying is introduced. The interpolated minimum mean squared error (MMSE) and constrained minimum variance (CMV) solutions are derived for both receiver and interpolator to mitigate multiple access interference (MAI) and intersymbol interference (ISI) in a downlink scenario. [ABSTRACT FROM PUBLISHER]
- Published
- 2005
- Full Text
- View/download PDF
234. Two-phase coding multichannel MAC protocol with MAI mitigation for mobile ad hoc networks.
- Author
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Lili Zhang, Boon-Hee Soong, and Wendong Xiao
- Abstract
This letter introduces a novel multichannel medium access control (MAC) protocol for mobile ad hoc networks (MANETs) based on a scalable two-phase coding scheme, which eliminates the hidden terminal problem (HTP) without exchange of neighborhood information. Furthermore, power control is incorporated to mitigate multiple-access interference (MAI). Simulation results show that significant improvement can be achieved by the proposed protocol over IEEE 802.11 DCF. [ABSTRACT FROM PUBLISHER]
- Published
- 2004
- Full Text
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235. A deterministic multiuser code-timing estimator for long-code band-limited CDMA systems.
- Author
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Rensheng Wang and Hongbin Li
- Abstract
In this letter, we present a deterministic multiuser code-timing estimator for asynchronous direct-sequence (DS) code-division multiple-access (CDMA) systems with aperiodic long spreading codes and band-limited chip waveforms. A key feature of the proposed estimator is that it captures and capitalizes a deterministic structure of the overall interference, namely multi-access interference (MAI) and intersymbol interference (ISI), in the frequency domain. This allows complete interference elimination in a deterministic manner, which is in general more effective and data-efficient than stochastic approaches. Numerical results show that the proposed estimator can achieve fast acquisition; it is also near-far resistant, providing accurate code acquisition for even overloaded systems (i.e., systems with more users than the processing gain) in multipath fading environments. [ABSTRACT FROM PUBLISHER]
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- 2004
- Full Text
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236. An Exploration of Metacognition and Its Effect on Mathematical Performance In Differential Equations
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Mary J Smith
- Subjects
lcsh:Theory and practice of education ,MAI ,differential equations ,Metacognition, MAI, differential equations ,Metacognition ,lcsh:LB5-3640 - Abstract
Research suggests that students who are “metacognitively aware learners” demonstrate better academic performance (Shraw & Dennison, 1994; Md. Yunus & Ali, 2008). In this research, the metacognitive levels for two classes of differential equations students were studied. Students completed a survey adapted from the Metacognitive Awareness Inventory (MAI) (Shraw & Dennison, 1994) at the start of the course. The questions chosen from the MAI were aimed at three components concerning the students’ knowledge about their cognition: declarative knowledge, procedural knowledge, and conditional knowledge. Analysis shows student performance, as measured by the course grade, cannot be predicted by metacognitive awareness levels.
- Published
- 2013
237. Using reflection triggers while learning in an online course
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reflection amplifiers ,reflective learning ,MAI ,Schön ,self-assessment ,indicators ,COLLES questionnaire ,Jakob Nielsen ,meta-learning ,reflection triggers ,annotations ,awareness ,meta-cognition ,reflection - Published
- 2012
238. A Study of IT Strategy for Railways toward the Super-aged Society
- Subjects
Shoichi ,Arika ,Miyashita ,Sayoko ,Mai ,Tokiko ,Sato ,Azuma ,Morimoto ,Shimomura - Abstract
日本は顕著な高齢社会である.少子高齢化は,労働力の減少や経済成長の鈍化といった形で産業界に大きな影響を与えている.これは,日本の主要交通を担う鉄道事業者においても例外ではなく,各社は旅客輸送量の減少という問題への対応を迫られている.このような状況において,沿線を活性化し,利用者増加を図るには,情報技術を活用した画期的なサービスの提供や,沿線の魅力をより多くの人に伝えるための効果的・効率的な情報発信が求められる.本稿では,居住地決定に関わる要因や,決定に際して必要とされる情報について分析し,沿線への人口流入・定着を促す施策について考察した.
- Published
- 2012
239. Letramento científico e consciência metacognitiva de grupos de professores em formação inicial e continuada: um estudo exploratório
- Author
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Gomes, Ana Sílvia Alves, Pimentel Carneiro de Almeida, Ana Cristina, Gomes, Ana Sílvia Alves, and Pimentel Carneiro de Almeida, Ana Cristina
- Abstract
This study investigated the scientific literacy skills and metacognitive profile of basic education teachers and students of undergraduate courses, using two newly produced instruments: Test of Scientific Literacy Skills (TOSLS) and the Metacognitive Awareness Inventory (MAI). Specifically they were investigated possible correlations between metacognitive skills and scientific literacy, checking and comparing different types of metacognitive skills and scientific literacy for current and future teachers, and evaluate the psychometric and possible improvements of the instruments qualities. The work is based on contemporary research on scientific literacy and metacognition, in particular, studies that aimed to investigate how these skills are developed by teachers of science and mathematics. The results obtained with the implementation of the instruments on a sample of twenty three undergraduate and twenty practicing teachers, indicate that 74% of the sample does not have an adequate level of scientific literacy, despite declaring that frequently use different metacognitive strategies study and plan lessons. Significant statistical correlations were also found between the scores of TOSLS and MAI, e.g. metacognitive skills and scientific literacy skills were not correlated. It shows the rupture of key skills with lower rates of success, arguing about their possible causes and mitigation measures for identified problems and suggests future research possibilities using the instruments., Este trabalho buscou investigar as habilidades de letramento científico e o perfil metacognitivo de grupos de professores de educação básica e estudantes de cursos de licenciatura, utilizando dois instrumentos recentemente produzidos: o teste de habilidades de letramento científico – TOSLS, abreviatura em inglês de Test of Scienti?c Literacy Skills (GORMALLY et al, 2012) e o Inventário de Consciência Metacognitiva – MAI – abreviatura em inglês de Metacognitive Awareness Inventory (SCHRAW, e DENNISON,1994). Especificamente foram investigadas possíveis correlações entre habilidades metacognitivas e de letramento científico, aferindo e comparando diferentes tipos de habilidades metacognitivas e de letramento científico em grupos de professores em formação inicial e em formação continuada, além de avaliar as qualidades psicométricas e possíveis aperfeiçoamentos dos instrumentos utilizados. O trabalho fundamenta-se em pesquisas contemporâneas sobre letramento científico e metacognição, em particular, estudos que visaram investigar como essas habilidades são desenvolvidas por professores de ciências e matemática. Os resultados, obtidos com a aplicação dos instrumentos em um grupo de vinte três licenciandos e vinte professores em exercício, indicam que 74% dos sujeitos dos grupos pesquisados ainda não possui um nível adequado de letramento científico, apesar de declarar que utilizam frequentemente diferentes estratégias metacognitivas para estudar e planejar aulas. Também não foram encontradas correlações estatísticas significativas entre os escores do TOSLS e MAI, ou seja, habilidades metacognitivas e habilidades de letramento científico não se mostraram correlacionadas. Apresenta-se o detalhamento das principais habilidades com menores índices de acerto, discutindo a respeito de suas possíveis causas e medidas de mitigação para os problemas identificados, além de sugerir possibilidades de pesquisas futuras utilizando os instrumentos em questão.
- Published
- 2016
240. Integration of PSI, MAI, and Intensity-Based Sub-Pixel Offset Tracking Results for Landslide Monitoring with X-Band Corner Reflectors—Italian Alps (Corvara)
- Author
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Romy Schlögel, Giovanni Cuozzo, Lorenzo Bruzzone, and Mehdi Darvishi
- Subjects
landslide ,Offset (computer science) ,010504 meteorology & atmospheric sciences ,Computer science ,Science ,offset tracking ,0211 other engineering and technologies ,X band ,02 engineering and technology ,01 natural sciences ,computer vision ,InSAR ,Corner reflector ,remote sensing ,Interferometric synthetic aperture radar ,PSI ,Image resolution ,Decorrelation ,021101 geological & geomatics engineering ,0105 earth and related environmental sciences ,Remote sensing ,Pixel ,corner reflector ,MAI ,SAR ,Landslide ,Interferometry ,General Earth and Planetary Sciences - Abstract
This paper presents an analysis of the integration between interferometric and intensity-offset tracking-based SAR remote sensing for landslide hazard mitigation in the Italian Alps. Despite the advantages of Synthetic Aperture Radar Interferometry (InSAR) methods for quantifying landslide deformation, some limitations remain. The temporal decorrelation, the 1-D Line Of Sight (LOS) observation restriction, the high velocity rate and the multi-directional movement properties make it difficult to monitor accurately complex landslides in areas covered by vegetation. Therefore, complementary and integrated approaches, such as offset tracking-based techniques, are needed to overcome these InSAR limitations for monitoring ground surface deformations. As sub-pixel offset tracking is highly sensitive to data spatial resolution, the latest generations of SAR sensors, such as TerraSAR-X and COSMO-SkyMed, open interesting perspective for a more accurate hazard assessment. In this paper, we consider high-resolution X-band data acquired by the COSMO-SkyMed (CSK) constellation for Permanent Scatterers Interferometry (PSI), Multi-Aperture Interferometry (MAI) and offset tracking processing. We analyze the offset tracking techniques considering area and feature-based matching algorithms to evaluate their applicability to CSK data by improving sub-pixel offset estimations. To this end, PSI and MAI are used for extracting LOS and azimuthal displacement components. Then, four well-known area-based and five feature-based matching algorithms (taken from computer vision) are applied to 16 X-band corner reflectors. Results show that offset estimation accuracy can be considerably improved up to less than 3% of the pixel size using the combination of the different feature-based detectors and descriptors. A sensitivity analysis of these techniques applied to CSK data to monitor complex landslides in the Italian Alps provides indications on advantages and disadvantages of each of them.
- Published
- 2018
241. Nontuberculous Mycobacterial Pulmonary Disease in an Immunocompromised Patient.
- Author
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Singh RK and Kumar D
- Abstract
In this article, we discuss the nontuberculous mycobacterial pulmonary disease in a 40-year-old HIV-seropositive female patient. The patient has a history of pulmonary tuberculosis, experienced two years ago. At the time, she was treated successfully with anti-tuberculous therapy. A chest x-ray (CXR) and computed tomography (CT) scan of the chest showed a thin-walled cavitary lesion in the right lung. In addition, the tree-in-bud sign, indicative of airway obstruction, was present on CT imaging. Fluorescence microscopy using auramine staining showed acid-fast bacilli (AFB) in sputum smears on more than two samples. Mycobacterium tuberculosis was not detected in the nucleic acid amplification test in the same sample. The AFB identified were mycobacteria other than tubercle bacilli, i.e., nontuberculous mycobacteria, that cause cavitary lung disease. Culture in liquid media and subsequent molecular analysis showed Mycobacterium avium complex (MAC). The patient is now being treated with a multidrug regimen of antibiotics and has improved, with documented sputum conversion., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2019, Singh et al.)
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- 2019
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242. 3D Coseismic Deformation Field and Source Parameters of the 2017 Iran-Iraq Mw7.3 Earthquake Inferred from DInSAR and MAI Measurements.
- Author
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Wang, Zhiheng, Zhang, Rui, and Liu, Yuxin
- Subjects
- *
MORPHOTECTONICS , *SYNTHETIC aperture radar , *EARTHQUAKES , *PARAMETER estimation , *GEOLOGICAL surveys - Abstract
The coseismic slip on the main fault related to the 2017 Iran-Iraq Mw7.3 earthquake has been investigated by previous studies using DInSAR (differential interferometric synthetic aperture radar) ground deformation measurements. However, DInSAR observation is not sensitive to the ground deformation in the along-track (AT) direction. Therefore, only the one-dimensional (1D) DInSAR coseismic deformation field measurements, derived in the LOS (line-of-sight) direction of radar, was applied in source parameters estimation. To further improve the accuracy of the fault slip inversion, the 3D (three-dimensional) coseismic deformation fields were reconstructed in the first place, by a combined use of the DInSAR and MAI (multiple aperture InSAR) measurements. Subsequently, the LOS and 3D deformation data sets were used as the constraint respectively, to perform a two-step inversion scheme to find an optimal geometry and slip distribution on the main fault. The comparative analysis indicated that the 3D coseismic deformation data sets improved the inversion-accuracy by 30%. Besides, the fault invention results revealed a deep dislocation on a NNW trending fault (the strike is 352.63°) extending about 60 km, along the fault dips 14.76° to the ENE. The estimated seismic moment is 8.44 × 1019 Nm (Mw7.3), which is close to the solution provided by USGS (United States Geological Survey). The slip distributed at the depth between 12 and 18 km, and the peak slip of 6.53 m appears at the depth of 14.5 km left near the epicenter. Considering the geological structure in the earthquake region and fault source-parameters, it comes to a preliminary conclusion that the ZMFF (the Zagros Mountain Front fault) should be responsible for the earthquake. In general, this paper demonstrated the superiority of using the 3D coseismic deformation fields on source parameters estimation. [ABSTRACT FROM AUTHOR]
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- 2019
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243. Objectifying grade in Ta-T1 urothelial carcinomas of the bladder using proliferative and quantitative markers: A multicentre study in 310 bladder tumors.
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Bosschieter, Judith, Hentschel, Anouk E., Savci-Heijink, C. Dilara, van der Voorn, J. Patrick, Rozendaal, Rence L., Vis, André N., Zwartkruis, Evita C.H., Lissenberg-Witte, Birgit I., van Moorselaar, R. Jeroen A., and Nieuwenhuijzen, Jakko A.
- Subjects
- *
BLADDER cancer , *BLADDER , *CARCINOMA , *FLOW cytometry , *LOGISTIC regression analysis , *CONFIDENCE intervals - Abstract
Purpose: Histological grade is an important prognostic factor in patients with non-muscle-invasive bladder cancer (NMIBC). However, interobserver variability is high. Previous studies have suggested that quantification of histological features is useful to objectify grading. We evaluated whether quantification of the mean nuclear area of the 10 largest nuclei (MNA-10), degree of aneuploidy (DNA index or DI) and mitotic activity index (MAI) are of diagnostic value for NMIBC grade. Additionally, prognostic value of the 3 measures was assessed.Material and Methods: A consensus grade was determined by 3 uropathologists in 310 NMIBC tissues according to the World Health Organization (WHO) 1973 and the WHO2004. Logistic regression with forward selection was used to determine the optimal combination of measures (MNA-10, DI, and MAI) to diagnose grade 3 (G3) or high-grade (HG) NMIBC (WHO1973 and WHO2004, respectively).Results: In 310 tumors of 215 patients at least 1 of the measures (MNA-10, DI, or MAI) had been determined. The combination of MNA-10 and MAI was selected as the most diagnostic combination and resulted in a sensitivity of 94% (95% confidence interval [CI]: 87-100) at a specificity of 72% (95% CI: 66-78) for G3 tumors. For the diagnosis of HG tumors sensitivity was 92% (95% CI: 86-97) at a specificity of 76% (95% CI: 70-93).Conclusions: Determination of MNA-10 and MAI is promising for diagnosing G3 and HG bladder tumors. These findings warrant further studies on the diagnostic and prognostic value of proliferative and quantitative features in bladder cancer patients. [ABSTRACT FROM AUTHOR]- Published
- 2019
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244. Seasonal Divergent Tree Growth Trends and Growth Variability along Drought Gradient over Northeastern China.
- Author
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Shi, Fangzhong, Wu, Xiuchen, Li, Xiaoyan, Wang, Pei, Yang, Xiaofan, Li, Yuanqiao, Jiang, Xiaofei, Pei, Tingting, Bai, Yan, Hao, Bingyan, Zhang, Cicheng, and Tong, Yaqin
- Subjects
TREE growth ,FOREST ecology ,TREE development ,CLIMATE change ,NORMALIZED difference vegetation index - Abstract
With the increasing temperature and intensified drought, global climate change has profound impacts on tree growth in temperate regions, which consequently regulates terrestrial-atmosphere biogeochemical processes and biophysical feedbacks. Thus, increasing numbers of studies have addressed the long-term annual trends in tree growth and their response to climate change at diverse spatial scales. However, the potential divergence in tree growth trends and growth variability (represented by coefficient of variance) in different seasons across large-scale climate gradients remains poorly understood. Here, we investigated the tree growth trends and growth variability in different seasons across diverse drought conditions in forested regions over northeastern China during the period 1982–2015, using both remote sensing observations and in situ tree-ring measurements. We found clear seasonal divergence in tree growth trends during 1982–2015, and the apparent increase was mainly observed in spring and autumn, attributed mainly to the increase in spring temperature and autumn solar radiation, respectively, but not in summer. The magnitudes of increasing trends in tree growth decrease with the increase of the multi-year average dryness index (MAI) in semi-arid areas (1.5 < MAI < 4.0) in all seasons. We further revealed that the interannual variability in tree growth was much larger in the semi-arid regions than in the humid and semi-humid regions in all seasons, and tree growth variability was significantly and negatively correlated with the variations in temperature and water deficit. Our findings improve our understanding of seasonal divergence in tree growth trends and provide new insights into spatial patterns in forest vulnerability in a warmer and drier climate. [ABSTRACT FROM AUTHOR]
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- 2019
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245. iEMG: Imaging electromyography
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Patrick van der Smagt and Holger Urbanek
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Adult ,Male ,Computer science ,Interface (computing) ,Cross talk ,Source reconstruction ,Biophysics ,Neuroscience (miscellaneous) ,Electromyography ,Signal ,Crosstalk ,CMG ,03 medical and health sciences ,EMG Array ,0302 clinical medicine ,sEMG ,Forearm ,medicine ,Humans ,Imaging EMG ,Muscle, Skeletal ,iEMG ,Electrodes ,Ultrasonography ,medicine.diagnostic_test ,MAI ,Muscle activation ,030229 sport sciences ,Anatomy ,Visualization ,medicine.anatomical_structure ,Gait analysis ,Neurology (clinical) ,030217 neurology & neurosurgery ,Biomedical engineering - Abstract
Advanced data analysis and visualization methodologies have played an important role in making surface electromyography both a valuable diagnostic methodology of neuromuscular disorders and a robust brain-machine interface, usable as a simple interface for prosthesis control, arm movement analysis, stiffness control, gait analysis, etc. But for diagnostic purposes, as well as for interfaces where the activation of single muscles is of interest, surface EMG suffers from severe crosstalk between deep and superficial muscle activation, making the reliable detection of the source of the signal, as well as reliable quantification of deeper muscle activation, prohibitively difficult. To address these issues we present a novel approach for processing surface electromyographic data. Our approach enables the reconstruction of 3D muscular activity location, making the depth of muscular activity directly visible. This is even possible when deep muscles are overlaid with superficial muscles, such as seen in the human forearm. The method, which we call imaging EMG (iEMG), is based on using the crosstalk between a sufficiently large number of surface electromyographic electrodes to reconstruct the 3D generating electrical potential distribution within a given area. Our results are validated by in vivo measurements of iEMG and ultrasound on the human forearm.
- Published
- 2015
246. Le syndrome de 1940 - Un trou noir mémoriel ?
- Author
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Vergnon, Gilles, Santamaria, Yves, Collet, Jean-Paul, Yves Santamaria, Action publique et mondes urbains (LARHRA APMU), LAboratoire de Recherche Historique Rhône-Alpes - UMR5190 (LARHRA), Université Pierre Mendès France - Grenoble 2 (UPMF)-École normale supérieure - Lyon (ENS Lyon)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-École normale supérieure - Lyon (ENS Lyon)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Histoire et histoire de l'art. Italie, Pays Alpins, Interactions internationales (CRHIPA - EA 599), Université Pierre Mendès France - Grenoble 2 (UPMF), Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Université Lumière - Lyon 2 (UL2)-École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Université Lumière - Lyon 2 (UL2)-École normale supérieure - Lyon (ENS Lyon)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF), Université Pierre Mendès France - Grenoble 2 (UPMF)-École normale supérieure de Lyon (ENS de Lyon)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Pierre Mendès France - Grenoble 2 (UPMF)-École normale supérieure de Lyon (ENS de Lyon)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML)
- Subjects
mémoire ,[SHS.HIST] Humanities and Social Sciences/History ,analyse ,Mai ,Juin 1940 ,Défaite militaire française ,[SHS.HIST]Humanities and Social Sciences/History ,impact sur la population - Abstract
Le présent ouvrage est issu d'un colloque organisé à Lyon en janvier 2014; International audience; Mai-Juin 1940, prélude à l'effondrement de la IIIe République et au régime de Vichy, est la défaite militaire la plus traumatique de l'histoire de la France contemporaine. Elle a fait l'objet d'une abondante production historiographique, en France comme à l'étranger. Les conclusions sont généralement nuancées sur les raisons de l'effondrement, même si des désaccords subsistent entre historiens sur la possibilité d'une " histoire alternative ".Mais, à la différence des travaux sur le régime de Vichy, voire sur la Résistance, ces conclusions n'ont jamais pu vraiment s'acculturer dans la société française. La mémoire de 1940, peu chargée d'histoire, reste peuplée de lieux communs forgés pour certains dès 1940 et résumés par Louis-Ferdinand Céline dans son pamphlet Les Beaux draps : " Neuf mois de belote, six semaines de course à pied : l'armée Ladoumègue ".Des soldats lâches, au minimum peu combatifs, conduits par des chefs stupides ou incompétents ; tels sont présentés les faits dans les films de La 7e Compagnie. Le présent ouvrage, issu d'un colloque organisé à Lyon en janvier 2014, analyse cette faiblesse de la parole publique sur la défaite. Il étudie les différents canaux mémoriels (politiques, étatiques, associatifs, religieux, littéraires) qui ont participé dès 1940 à la constitution de cette " légende noire " qui a eu des incidences redoutables sur l'image du pays et sur " l'estime de soi " des Français.
- Published
- 2015
247. Vi ere en nasjon vi med. 17.mai-talen som integreringsarena
- Author
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Buxrud, Bjørnar
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integrering ,minoriteter ,identitet ,mai ,nasjonal - Abstract
Som sjanger kan 17.mai-talen sies å være en fremstilling av nasjonal identitet. Den er derfor et interessant uttrykk å lete etter tendenser i når det gjelder integrering av minoritetsgrupper. Oppgavens overordnede problemstilling er å undersøke hvordan inkluderes norske med minoritetsbakgrunn i 17.mai-taler holdt av ordførere i norske kommuner?
- Published
- 2015
248. Validade preditiva do movement assessment of infants para crianças pré-termo brasileiras Predictive validity of the Movement Assessment of Infants (MAI) for Brazilian preterm children
- Author
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Ana Amélia Cardoso, Lívia C. Magalhães, Regina Helena C. Amorim, Maria Lúcia Paixão, Marisa C. Mancini, and Luciana D.F. Rossi
- Subjects
child development ,cerebral palsy ,predictive validity ,validade preditiva ,paralisia cerebral ,prematurity ,detecção precoce ,desenvolvimento infantil ,MAI ,early detection ,lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry ,prematuridade ,lcsh:RC321-571 - Abstract
A validade preditiva da Avaliação do Movimento do Bebê (Movement Assessment of Infants - MAI), para detecção precoce de paralisia cerebral, foi analisada em 89 crianças brasileiras nascidas com idade gestacional < 32 semanas e peso < 1500g. O MAI foi aplicado aos 4 e 8 meses de idade corrigida e as crianças foram submetidas a avaliação neurológica entre 2 e 7 anos de idade. Foram calculadas estimativas de sensibilidade (0,61 a 1,0), especificidade (0,79 a 0,95), valor de predição positiva (0,48 a 0,73) e valor de predição negativa (0,79 a 1,0), aos 4 e 8 meses, para escores > 13 e > 10 pontos de risco. Os melhores índices preditivos foram obtidos aos 8 meses e para o ponto de corte > 13 pontos de risco. Um critério menos restritivo (> 10 pontos) pode ser útil para predição de transtornos da coordenação motora, na idade escolar.The predictive validity of the Movement Assessment of Infants (MAI) for the detection of cerebral palsy was analyzed in 89 Brazilian infants, born with gestational age < 32 weeks and weight < 1500g. The infants were assessed with the MAI at 4 and 8 months, corrected ages, and were submitted to a neurological evaluation between the ages 2 and 7 years old. Estimates of sensibility (0.61 - 1.0), specificity (0.79 - 0.95), positive predictive value (0.48 - 0.73) and negative predictive value (0.79 - 1.0) were calculated at 4 and 8 months, for risk points > 13 and > 10. The best predictive values were obtained at 8 months, with a cut off > 13 risk points. A less restrictive criteria (> 10 points) might be useful for the prediction of motor coordination problems at school age.
- Published
- 2004
249. Validade preditiva do movement assessment of infants para crianças pré-termo brasileiras
- Author
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Regina Helena Caldas de Amorim, Lívia de Castro Magalhães, Marisa Cotta Mancini, Maria Lúcia Paixão, Luciana Drummond de Figueiredo Rossi, and Ana Amélia Cardoso
- Subjects
Predictive validity ,Pediatrics ,medicine.medical_specialty ,MEDLINE ,detecção precoce ,Movement assessment ,Cerebral palsy ,Developmental psychology ,paralisia cerebral ,medicine ,desenvolvimento infantil ,early detection ,prematuridade ,child development ,cerebral palsy ,prematurity ,MAI ,Gestational age ,medicine.disease ,Predictive value ,Motor coordination ,predictive validity ,Neurology ,validade preditiva ,Predictive value of tests ,Neurology (clinical) ,Psychology - Abstract
A validade preditiva da Avaliação do Movimento do Bebê (Movement Assessment of Infants - MAI), para detecção precoce de paralisia cerebral, foi analisada em 89 crianças brasileiras nascidas com idade gestacional < 32 semanas e peso < 1500g. O MAI foi aplicado aos 4 e 8 meses de idade corrigida e as crianças foram submetidas a avaliação neurológica entre 2 e 7 anos de idade. Foram calculadas estimativas de sensibilidade (0,61 a 1,0), especificidade (0,79 a 0,95), valor de predição positiva (0,48 a 0,73) e valor de predição negativa (0,79 a 1,0), aos 4 e 8 meses, para escores > 13 e > 10 pontos de risco. Os melhores índices preditivos foram obtidos aos 8 meses e para o ponto de corte > 13 pontos de risco. Um critério menos restritivo (> 10 pontos) pode ser útil para predição de transtornos da coordenação motora, na idade escolar. The predictive validity of the Movement Assessment of Infants (MAI) for the detection of cerebral palsy was analyzed in 89 Brazilian infants, born with gestational age < 32 weeks and weight < 1500g. The infants were assessed with the MAI at 4 and 8 months, corrected ages, and were submitted to a neurological evaluation between the ages 2 and 7 years old. Estimates of sensibility (0.61 - 1.0), specificity (0.79 - 0.95), positive predictive value (0.48 - 0.73) and negative predictive value (0.79 - 1.0) were calculated at 4 and 8 months, for risk points > 13 and > 10. The best predictive values were obtained at 8 months, with a cut off > 13 risk points. A less restrictive criteria (> 10 points) might be useful for the prediction of motor coordination problems at school age.
- Published
- 2004
250. Sensitivity of Carrier Frequency Offset and MAI in DAPSK-MC-CDMA Systems
- Author
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Chen, Gen-Horng and Wei, Shyue-Win
- Published
- 2007
- Full Text
- View/download PDF
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