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485 results on '"Automatic analysis"'

301. Use case description of requirements for product lines

Author

Bertolino A., Fantechi A., Gnesi S., Lami G., and Maccari A.

Subjects
Automatic analysis, Use cases formalism
Abstract

Capturing the variations characterizing the set of products belonging to a product line is a key issue for the requirements engineering of this development philosophy. This paper describes ways to extend the well-known Use Case formalism in order to make possible the representation of these variations, in the perspective to make them suitable for an automatic analysis.

Published
2002

302. Clinical validation of machine learning for automatic analysis of multichannel magnetocardiography

Author

Fenici, Riccardo, Brisinda, Donatella, Meloni, Am, Sternickel, K, Fenici, Peter, Fenici, Riccardo (ORCID:0000-0002-4664-2653), Brisinda, Donatella (ORCID:0000-0002-9803-0093), Fenici, Riccardo, Brisinda, Donatella, Meloni, Am, Sternickel, K, Fenici, Peter, Fenici, Riccardo (ORCID:0000-0002-4664-2653), and Brisinda, Donatella (ORCID:0000-0002-9803-0093)

Abstract

Not available

Published
2005

303. Intellectual data analyzing in automated management system of bragorectification settin

Subjects
Physics, lcsh:Technology (General), lcsh:T1-995, bragorektification setting, data mining, Food science, neuro-uncertain technology, lcsh:Business, lcsh:HF5001-6182, automatic analysis
Abstract

This article tells about Data Mining technology using for analyzing data and extract information from data set on the example of bragorectification setting. The main task of exploration is the automatic analysis of methods and systems, data connections developping between amounts which can be seen as a kind of summary of the input data and may be used in further analysis, modeling or forecasting. This article considers the main influencing factors of technological processes and interconnection between input and output data based on Bragorectification setting operation (BRS). One of such methods is neuro – uncertain technology. To achieve the aim we have got information and statictics about management object operation and controlling. It was built parametric structure of Bragorectification setting neuro – uncertain model. It was formulated uncertain structure data base model and received the surface response as graphical dependencies for operator decisions. Using these methods of information processing in sub- decisions, the effectiveness of Bragorectification setting control will significantly increase.

Published
2014

304. If looks could talk: A system for automatic analysis of facial expressions

Author

Pantic, M., Rothkrantz, J.M., and De Boo, M.

Subjects
human facial expressions, automatic analysis
Abstract

Researchers at Delft University of Technology have developed a computer system capable of recognising human facial expressions from images. The system can distinguish between 30 different units such as a smile, or raised eyebrows. It is intended for use by behavioural researchers and the medical profession. A psychologist might use it to automatically receive and analyse a series of photographs of people he wishes to observe. Psychologists archives are often crammed with photographs, and processing them is just the first step.In addition, over the last decade, researchers all over the world have been looking for ways to improve the way we communicate with computers, other than through a mouse and keyboard. The interface of new multimedia products must become more intelligent and user-friendly. This requires insight into a number of aspects of non-verbal communication.

Published
2001

305. If looks could talk: A system for automatic analysis of facial expressions

Author

De Boo, M. (author) and De Boo, M. (author)

Abstract

Researchers at Delft University of Technology have developed a computer system capable of recognising human facial expressions from images. The system can distinguish between 30 different units such as a smile, or raised eyebrows. It is intended for use by behavioural researchers and the medical profession. A psychologist might use it to automatically receive and analyse a series of photographs of people he wishes to observe. Psychologists archives are often crammed with photographs, and processing them is just the first step.In addition, over the last decade, researchers all over the world have been looking for ways to improve the way we communicate with computers, other than through a mouse and keyboard. The interface of new multimedia products must become more intelligent and user-friendly. This requires insight into a number of aspects of non-verbal communication.

Published
2001

307. The Design and Implementation of a Processing System of Qin Score (Jianzipu) QinS(1.0)

Author

Li Sixin, Li Sixin, Li Sixin, and Li Sixin

Abstract

International Computer Music Conference Proceedings: vol. 1999, (dlps) bbp2372.1999.345, http://hdl.handle.net/2027/spo.bbp2372.1999.345, This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. Please contact mpub-help@umich.edu to use this work in a way not covered by the license.

Published
1999

308. A Novel Voltammetric In-Situ Profiling System for ContinuousReal-Time Monitoring of Trace Elements in Natural Waters

Author

M.-L. Tercier, Flavio Graziottin, and Jacques Buffle

Subjects
In situ, Profiling (computer programming), Trace elements, Freshwaters, Chemistry, Microsensor, Speciation, Continuous monitoring, Analytical chemistry, In-situ probe, Anoxic waters, Profiling system, Analytical Chemistry, Automatic analysis, Environmental chemistry, ddc:540, Electrochemistry, Mobile species, Voltammetry, Seawater, Trace metal, TRACE (psycholinguistics)
Abstract

This article describes a novel voltammetric in-situ profiling system (VIP System) for continuous, real-time monitoring of trace elements in fresh and seawater down to 500 meter depth. The VIP System has been designed using advanced microprocessor and telemetry technology. The heart of the submersible voltammetric probe is a Hg-plated Ir-based microsensor covered with an antifouling gel membrane. This gel integrated microsensor allows direct voltammetric measurements of trace metals in complex media without physical and chemical interferences of the test solution. A detailed description of the system is given and examples of environmental applications are reported for in-situ trace metal monitoring in oxygen saturated seawater as well as for in-situ profiling of MnII in anoxic lake water. The results indicate that the VIP System is robust and reliable and that in-situ measurements of mobile fraction of trace metals can be achieved down to very low concentration levels (ca. 5 ppt).

Published
1998

309. Automatic MRI Database Exploration and Applications

Author

Gérard Subsol, Jean-Philippe Thirion, Alexandre Guimond, Medical imaging and robotics (EPIDAURE), Inria Sophia Antipolis - Méditerranée (CRISAM), and Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)

Subjects
Nervous system, Volume of interest, Computer science, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, computer.software_genre, Database, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, Artificial Intelligence, Medical atlas, Medical imaging, [INFO.INFO-IM]Computer Science [cs]/Medical Imaging, Standard model (cryptography), Structure (mathematical logic), business.industry, Volume (computing), Brain, Image databank, Classification, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, Nuclear magnetic resonance imaging, Automatic analysis, Image database, Central nervous system, Recording, Computer Vision and Pattern Recognition, Artificial intelligence, Atlas, Exploration, business, computer, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, Software, Human
Abstract

International audience; The design of representative models of the human body is of great interest to medical doctors. Qualitative information about the characteristics of the brain is widely available, but due to the volume of information that needs to be analyzed and the complexity of its structure, rarely is there quantification according to a standard model. To address this problem, we propose in this paper an automatic method to retrieve corresponding structures from a database of medical images. This procedure being local and fast, will permit navigation through large databases in a practical amount of time. We present as examples of applications the building of an average volume of interest and preliminary results of classification according to morphology.

Published
1997

310. Examination of accuracy of sleep stages by means of an automatic sleep analysis system ‘Sleep Ukiha’.

Author

Hashizume, Yuji, Kuwahara, Hiroo, Uchimura, Naohisa, Mukai, Masaki, Shirakawa, Shinichirou, Satomura, Takeshi, Takeuchi, Noboru, Tanaka, Junji, and Maeda, Hisao

Subjects
*APNEA, *SLEEP stages, *SLEEP apnea syndromes
Abstract

Abstract We examined the differences between the results of an automatic sleep analysis system and inspection decision. Subjects were 10 males (average age 21.6 years). One section consists of 20 s records. The sections that deviated from the algorithm could not be decided. Each sleep stage decided by automatic analysis was compared with the inspection decision. The agreement ratio of stage 3 was 91.6% in the highest, and followed by stage 2, stage 4, stage W and stage 1. The lowest was 62.5% for movement time. The total agreement ratio was 85.8%. The agreement ratios of the apnea index (AI) and the apnea hypopnea index (AHI) were relatively high, but for types of sleep apnea, agreement ratios require improvement. [ABSTRACT FROM AUTHOR]

Published
2001
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311. Supervised and Unsupervised Learning Technology in the Study of Rodent Behavior.

Author

Gris KV, Coutu JP, and Gris D

Abstract

Quantifying behavior is a challenge for scientists studying neuroscience, ethology, psychology, pathology, etc. Until now, behavior was mostly considered as qualitative descriptions of postures or labor intensive counting of bouts of individual movements. Many prominent behavioral scientists conducted studies describing postures of mice and rats, depicting step by step eating, grooming, courting, and other behaviors. Automated video assessment technologies permit scientists to quantify daily behavioral patterns/routines, social interactions, and postural changes in an unbiased manner. Here, we extensively reviewed published research on the topic of the structural blocks of behavior and proposed a structure of behavior based on the latest publications. We discuss the importance of defining a clear structure of behavior to allow professionals to write viable algorithms. We presented a discussion of technologies that are used in automated video assessment of behavior in mice and rats. We considered advantages and limitations of supervised and unsupervised learning. We presented the latest scientific discoveries that were made using automated video assessment. In conclusion, we proposed that the automated quantitative approach to evaluating animal behavior is the future of understanding the effect of brain signaling, pathologies, genetic content, and environment on behavior.

Published
2017
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312. A clinical utility assessment of the automatic measurement method of the quality of Meibomian glands.

Author

Koprowski R, Tian L, and Olczyk P

Subjects
Automation, Case-Control Studies, Eyelid Diseases diagnostic imaging, Eyelid Diseases physiopathology, Female, Humans, Male, Meibomian Glands physiopathology, Signal Processing, Computer-Assisted, Image Processing, Computer-Assisted, Meibomian Glands diagnostic imaging
Abstract

Background: Meibomian gland dysfunction (MGD) is one of the most common diseases observed in clinics and is the leading cause of evaporative dry eye. Today, diagnostics of MGD is not fully automatic yet and is based on a qualitative assessment made by an ophthalmologist. Therefore, an automatic analysis method was developed to assess MGD quantiatively., Materials: The analysis made use of 228 images of 57 patients recorded by OCULUS Keratograph ® 5 M with a resolution of 1024 × 1360 pixels concern 30 eyes of healthy individuals (14 women and 16 men) and 27 eyes of sick patients (10 women and 17 men). The diagnosis of dry eye was made according to the consensus of DED in China (2013)., Methods: The presented method of analysis is a new, developed method enabling an automatic, reproducible and quantitative assessment of Meibomian glands. The analysis relates to employing the methods of analysis and image processing. The analysis was conducted in the Matlab environment Version 7.11.0.584, R2010b, Java VM Version: Java 1.6.0_17-b04 with Sun Microsystems Inc. with toolboxes: Statistical, Signal Processing and Image Processing., Results: The presented, new method of analysis of Meibomian glands is fully automatic, does not require operator's intervention, allows obtaining reproducible results and enables a quantitative assessment of Meibomian glands. Compared to the other known methods, particularly with the method described in literature it allows obtaining better sensitivity (98%) and specificity (100%) results by 2%.

Published
2017
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313. Validation of a new domiciliary diagnosis device for automatic diagnosis of patients with clinical suspicion of OSA.

Author

Durán-Cantolla J, Zamora Almeida G, Vegas Diaz de Guereñu O, Saracho Rotaeche L, Hamdan Alkhraisat M, Durán Carro J, Egea Santaolalla C, and Anitua E

Subjects
Adult, Aged, Diagnosis, Computer-Assisted, Female, Heart Rate, Humans, Male, Middle Aged, Mobile Applications, Oxygen Consumption, Point-of-Care Systems, Reproducibility of Results, Spain, Polysomnography instrumentation, Polysomnography methods, Sleep Apnea, Obstructive diagnosis, Sleep Apnea, Obstructive physiopathology
Abstract

Background and Objective: Obstructive sleep apnoea is a prevalent and considerably underdiagnosed disease. The development of cost-effective, home-based, automatic diagnostic devices to improve the diagnosis accessibility is therefore essential., Methods: In this study, a new portable polygraph (BTI-APNiA) was used to validate automatic scoring. This five-channel device records respiratory flow, oxygen saturation, heart rate, body position and snoring. The validation was performed in two phases. In the first phase, manual and automatic scorings of a new respiratory polygraphy (RP) device (BTI-APNiA) were compared. In the second phase, automatic analysis performed with BTI-APNiA was compared with manual scoring of a validated RP device (Embletta Gold)., Results: Phase I was completed by 424 patients (50.5% males, 52.2 ± 12.4 years, BMI of 25.4 ± 4.8 kg/m 2 and Epworth Sleepiness Scale score of 8.0 ± 4.0). Manual and automatic analysis resulted in an apnoea-hypopnoea index (AHI) of 13.7 ± 12.7 and 14.0 ± 12.5 (P > 0.05), respectively. The interclass correlation coefficient (ICC) was 0.99 (P < 0.001). During Phase II, 28 patients were evaluated (72.0% men, 49.1 ± 10.9 years, BMI of 27.1 ± 4.2 kg/m 2 and Epworth Sleepiness Scale score of 7.5 ± 4.2). Manual analysis of Embletta Gold recordings indicated an AHI of 12.3 ± 14.0, while automatic analysis of the BTI-APNiA was 13.4 ± 14.7 (P > 0.05). The ICC was 0.68 (P < 0.01)., Conclusion: The automatic analysis of the BTI-APNiA is as accurate as manual analysis of AHI. This automatic analysis compared well with the manual analysis of a validated RP device (Embletta Gold)., (© 2016 Asian Pacific Society of Respirology.)

Published
2017
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314. Network Operations Automatic Analysis System

Author

Žagar, Mario, Mužak, Goran, Trupec, Denis, Kurešević, Alan, Kalpić, Damir, and Hljuz, Dobrić, Vesna

Subjects
automatic analysis, network operations, measurement, UNIX, GUI, distributed system
Abstract

This paper describes custom designed network operations automatic analysis system for measurement, monitoring and visualisation of presence and quality of video, audio and data signals. The measurement system is described in general. measurement hardware structure is proposed. More details about automatic analysis software are given. The general concept is described as well as details related to the various measurement software modules.

Published
1996

315. Análisis petrográfico automático en Carbones de Capa

Author

Catalina, Juan Carlos, Alarcón, D., and Prado, J. G.

Subjects
Coal petrography, Automatic analysis, Image processing, Reflectance analysis, Expertsystem
Abstract

Anew system has been developed to improve the interlaboratory accuracy in maceral and reflectance analysis of single seam bituminous coals. It performs automatically both types of analysis, following the same steps as the manual method. Scanning, focusing and analysis are automatic; only preparation of coal samples and starting requires a human operator. The main and most novel Idea of this approach is to coordinate an expert system with an image processing system using both reflectance and morphological information. In this way the system tries to reproduce the analysis procedure followed by a human expert

Published
1996

316. Automatic petrographic analysis of single seam coals

Author

Catalina, Juan Carlos, Alarcón, D., and Prado, J. G.

Subjects
Coal petrography, Automatic analysis, Image processing, Reflectance analysis, Expertsystem
Abstract

Anew system has been developed to improve the interlaboratory accuracy in maceral and reflectance analysis of single seam bituminous coals. It performs automatically both types of analysis, following the same steps as the manual method. Scanning, focusing and analysis are automatic; only preparation of coal samples and starting requires a human operator. The main and most novel Idea of this approach is to coordinate an expert system with an image processing system using both reflectance and morphological information. In this way the system tries to reproduce the analysis procedure followed by a human expert

Published
1996

317. Clustering of hypnographic parameters derived from human sleep Eeg

Author

Barcaro U., Bizzari M., Navona C., Bonanni E., Gneri C., and Murri L.

Subjects
Life and medical sciences, Automatic analysis, REM-NREM cycle
Abstract

Clustering of hypnographic parameters derived from human sleep EEG. Certain EEG-derived parameters, averaged over time intervals of approximately one minute throughout the night , previde curves which can be immediately compared with the hypnogram. For this reason, these parameters have been often used in the quantitative and/or automatic analysis of sleep. On the other hand they assume continuous, not discrete, values and therefore supply additional information to that of the hypnogram. A classification of these parameters should be useful to evaluate their effectiveness in describing the various EEG rhythms and to check whether some of them give complementary information or are redundant. For this purpose, a c1ustering of 34 automatically computed parameters was performed for 12 nights on 4 subjects (3 per subject). The number of c1usters obtained was 7 for lO nights and 8 for the remaining 2. Five c1asses of pararneters, valid for alI subjects and for alI the nights, were recognized.

Published
1995

318. Automatic analysis of interhemispheric correlation periodicities in the 4 s - 120 s range

Author

Barcaro U., Bizzarri M., Navona C., Bonanni E., and Murri L.

Subjects
Life and medical sciences, Automatic analysis, Periodicities, Interhemispheric correlation, Information systems. General
Abstract

During sleep some EEG activities show not only variations corresponding to sleep stage transitions, but also higher-frequency variations, which can exist during stationary-stage epochs. A previous investigation was based on the computation of parameters connected to frequency-band activities and on the automatics analysis of their variations in the 4s -120s range...

Published
1994

319. Automatic analysis of printed biological signals

Author

Išgum, Velimir and Mitrović, D., Zoran

Subjects
automatic analysis, computer program, curve manipulation, electrocardiogram, evoked potentials, handy scanner, H-ref1ex, paper records, printed biological signals, quantitative analysis, waveform analysis
Abstract

Aims. Development of a technique supported by a computer program for quantitative analysis and storing of printed biological signals. Methods. The paper records of the H-reflex electromyographic signal, the electrocardiogram and the book print of auditory evoked potential were scanned using Logitech Hand Held Scanner. The computer program assigned the abscissa and ordinate values to a single element of the scanned signal, producing a series of numbers representing a numerical curve. For the paper records with variable trace thickness and contrast, the program: plied a mathematical algorithm for the calculation of the ordinate mean value and linear interpolation of the m sing segments. The functions for numerical waveform analysis and curve manipulation were also included. Results. The numerical curves obtained after the processing of scanned signals are presented with examples of waveform analysis, including the assessment of the latency, amplitude of characteristic points and surface value under the selected curve segment. The accuracy and reproducibility of numerical values were checked using serial scanning and conversion procedure. Conclusions. The results confirm the value of the presented technique, offering the possibility of autonomic quantitative analysis and storing of paper records and prints in biology and medicine.

Published
1993

320. Automatic gender detection of dream reports: A promising approach.

Author

Wong C, Amini R, and De Koninck J

Subjects
Adolescent, Adult, Canada, Female, Humans, Male, Reproducibility of Results, Sex Characteristics, Students, Young Adult, Artificial Intelligence, Dreams, Self Report, Sex Factors
Abstract

A computer program was developed in an attempt to differentiate the dreams of males from females. Hypothesized gender predictors were based on previous literature concerning both dream content and written language features. Dream reports from home-collected dream diaries of 100 male (144 dreams) and 100 female (144 dreams) adolescent Anglophones were matched for equal length. They were first scored with the Hall and Van de Castle (HVDC) scales and quantified using DreamSAT. Two male and two female undergraduate students were asked to read all dreams and predict the dreamer's gender. They averaged a pairwise percent correct gender prediction of 75.8% (κ=0.516), while the Automatic Analysis showed that the computer program's accuracy was 74.5% (κ=0.492), both of which were higher than chance of 50% (κ=0.00). The prediction levels were maintained when dreams containing obvious gender identifiers were eliminated and integration of HVDC scales did not improve prediction., (Copyright © 2016 Elsevier Inc. All rights reserved.)

Published
2016
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321. fMRat: an extension of SPM for a fully automatic analysis of rodent brain functional magnetic resonance series.

Author

Chavarrías C, García-Vázquez V, Alemán-Gómez Y, Montesinos P, Pascau J, and Desco M

Subjects
Animals, Computer Graphics, Rats, Sprague-Dawley, Rats, Wistar, User-Computer Interface, Algorithms, Brain physiology, Magnetic Resonance Imaging methods
Abstract

The purpose of this study was to develop a multi-platform automatic software tool for full processing of fMRI rodent studies. Existing tools require the usage of several different plug-ins, a significant user interaction and/or programming skills. Based on a user-friendly interface, the tool provides statistical parametric brain maps (t and Z) and percentage of signal change for user-provided regions of interest. The tool is coded in MATLAB (MathWorks(®)) and implemented as a plug-in for SPM (Statistical Parametric Mapping, the Wellcome Trust Centre for Neuroimaging). The automatic pipeline loads default parameters that are appropriate for preclinical studies and processes multiple subjects in batch mode (from images in either Nifti or raw Bruker format). In advanced mode, all processing steps can be selected or deselected and executed independently. Processing parameters and workflow were optimized for rat studies and assessed using 460 male-rat fMRI series on which we tested five smoothing kernel sizes and three different hemodynamic models. A smoothing kernel of FWHM = 1.2 mm (four times the voxel size) yielded the highest t values at the somatosensorial primary cortex, and a boxcar response function provided the lowest residual variance after fitting. fMRat offers the features of a thorough SPM-based analysis combined with the functionality of several SPM extensions in a single automatic pipeline with a user-friendly interface. The code and sample images can be downloaded from https://github.com/HGGM-LIM/fmrat .

Published
2016
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322. Assessing sleep architecture and continuity measures through the analysis of heart rate and wrist movement recordings in healthy subjects: comparison with results based on polysomnography.

Author

Muzet A, Werner S, Fuchs G, Roth T, Saoud JB, Viola AU, Schaffhauser JY, and Luthringer R

Subjects
Actigraphy methods, Adult, Electronic Data Processing, Female, Humans, Male, Reproducibility of Results, Healthy Volunteers, Heart Rate physiology, Polysomnography methods, Sleep Stages physiology, Wrist
Abstract

Objective: The objective of the study was to evaluate the reliability of a new methodology for assessing sleep architecture descriptors based on heart rate and body movement recordings., Methods: Twelve healthy male and female subjects between 18 and 40 years of age, without sleep disorders and not taking any drug or medication that could affect sleep, were recorded continuously during five consecutive nights. Together with the standard polysomnography, heart rate was recorded with a Holter and wrist movements by actimetry. Of the 60 recorded nights, 48 artifact-free nights were analyzed by two independent and well-trained visual scorers according to the rules of the American Academy of Sleep Medicine. Sleep stages were assigned to every 30-s epoch. In parallel, the same nights were analyzed by the new methodology using only heart rate and actimetry data, allowing a 1-s epoch sleep stage classification. Sleep architecture was measured for 48 nights, independently for the two manual scorings and the automatic analysis., Results: Over 42 nights, the intra-class correlation coefficient, used to assess the consistency or reproducibility of quantitative measurements made by different observers, was classified as excellent when all 12 descriptors were combined. Analyses of the individual descriptors showed excellent interclass correlation for eight and good for four of the 12., Conclusion: The automatic analysis of heart rate and body movement during sleep allows for the evaluation of sleep architecture and continuity that is equivalent to those obtained by manual scoring of polysomnography. The technique used here is simple and robust to allow for home sleep monitoring., (Copyright © 2016 The Authors. Published by Elsevier B.V. All rights reserved.)

Published
2016
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323. ARAM: an automated image analysis software to determine rosetting parameters and parasitaemia in Plasmodium samples.

Author

Kudella PW, Moll K, Wahlgren M, Wixforth A, and Westerhausen C

Subjects
Erythrocytes physiology, Malaria, Falciparum blood, Malaria, Falciparum physiopathology, Microscopy instrumentation, Parasitemia parasitology, Reproducibility of Results, Rosette Formation instrumentation, Image Interpretation, Computer-Assisted, Malaria, Falciparum diagnostic imaging, Parasitemia diagnostic imaging, Plasmodium falciparum isolation & purification, Software
Abstract

Background: Rosetting is associated with severe malaria and a primary cause of death in Plasmodium falciparum infections. Detailed understanding of this adhesive phenomenon may enable the development of new therapies interfering with rosette formation. For this, it is crucial to determine parameters such as rosetting and parasitaemia of laboratory strains or patient isolates, a bottleneck in malaria research due to the time consuming and error prone manual analysis of specimens. Here, the automated, free, stand-alone analysis software automated rosetting analyzer for micrographs (ARAM) to determine rosetting rate, rosette size distribution as well as parasitaemia with a convenient graphical user interface is presented., Methods: Automated rosetting analyzer for micrographs is an executable with two operation modes for automated identification of objects on images. The default mode detects red blood cells and fluorescently labelled parasitized red blood cells by combining an intensity-gradient with a threshold filter. The second mode determines object location and size distribution from a single contrast method. The obtained results are compared with standardized manual analysis. Automated rosetting analyzer for micrographs calculates statistical confidence probabilities for rosetting rate and parasitaemia., Results: Automated rosetting analyzer for micrographs analyses 25 cell objects per second reliably delivering identical results compared to manual analysis. For the first time rosette size distribution is determined in a precise and quantitative manner employing ARAM in combination with established inhibition tests. Additionally ARAM measures the essential observables parasitaemia, rosetting rate and size as well as location of all detected objects and provides confidence intervals for the determined observables. No other existing software solution offers this range of function. The second, non-malaria specific, analysis mode of ARAM offers the functionality to detect arbitrary objects., Conclusions: Automated rosetting analyzer for micrographs has the capability to push malaria research to a more quantitative and statistically significant level with increased reliability due to operator independence. As an installation file for Windows © 7, 8.1 and 10 is available for free, ARAM offers a novel open and easy-to-use platform for the malaria community to elucidate resetting., (© 7, 8.1 and 10 is available for free, ARAM offers a novel open and easy-to-use platform for the malaria community to elucidate rosetting.)

Published
2016
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324. Automatic ¹H-NMR Screening of Fatty Acid Composition in Edible Oils.

Author

Castejón D, Fricke P, Cambero MI, and Herrera A

Subjects
Humans, Plant Oils chemistry, Fatty Acids analysis, Olea chemistry, Olive Oil chemistry, Proton Magnetic Resonance Spectroscopy methods
Abstract

In this work, we introduce an NMR-based screening method for the fatty acid composition analysis of edible oils. We describe the evaluation and optimization needed for the automated analysis of vegetable oils by low-field NMR to obtain the fatty acid composition (FAC). To achieve this, two scripts, which automatically analyze and interpret the spectral data, were developed. The objective of this work was to drive forward the automated analysis of the FAC by NMR. Due to the fact that this protocol can be carried out at low field and that the complete process from sample preparation to printing the report only takes about 3 min, this approach is promising to become a fundamental technique for high-throughput screening. To demonstrate the applicability of this method, the fatty acid composition of extra virgin olive oils from various Spanish olive varieties (arbequina, cornicabra, hojiblanca, manzanilla, and picual) was determined by ¹H-NMR spectroscopy according to this protocol.

Published
2016
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325. An efficient method for automatic morphological abnormality detection from human sperm images.

Author

Ghasemian F, Mirroshandel SA, Monji-Azad S, Azarnia M, and Zahiri Z

Subjects
Automation, Humans, Infertility, Male, Image Processing, Computer-Assisted methods, Semen Analysis methods
Abstract

Background and Objective: Sperm morphology analysis (SMA) is an important factor in the diagnosis of human male infertility. This study presents an automatic algorithm for sperm morphology analysis (to detect malformation) using images of human sperm cells., Methods: The SMA method was used to detect and analyze different parts of the human sperm. First of all, SMA removes the image noises and enhances the contrast of the image to a great extent. Then it recognizes the different parts of sperm (e.g., head, tail) and analyzes the size and shape of each part. Finally, the algorithm classifies each sperm as normal or abnormal. Malformations in the head, midpiece, and tail of a sperm, can be detected by the SMA method. In contrast to other similar methods, the SMA method can work with low resolution and non-stained images. Furthermore, an image collection created for the SMA, has also been described in this study. This benchmark consists of 1457 sperm images from 235 patients, and is known as human sperm morphology analysis dataset (HSMA-DS)., Results: The proposed algorithm was tested on HSMA-DS. The experimental results show the high ability of SMA to detect morphological deformities from sperm images. In this study, the SMA algorithm produced above 90% accuracy in sperm abnormality detection task. Another advantage of the proposed method is its low computation time (that is, less than 9s), as such, the expert can quickly decide to choose the analyzed sperm or select another one., Conclusions: Automatic and fast analysis of human sperm morphology can be useful during intracytoplasmic sperm injection for helping embryologists to select the best sperm in real time., (Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.)

Published
2015
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326. DeltaT50—a new method to assess temporal ventricular repolarization variability.

Author

Abrahamsson, Christina, Dota, Corina, Skallefell, Bo, Carlsson, Leif, Halawani, Dunia, Frison, Lars, Berggren, Anders, Edvardsson, Nils, and Duker, Göran

Abstract

Abstract: Background: Increased beat-to-beat variability in cardiac repolarization time is a tentative risk marker of drug-induced torsades de pointes. We developed a new, automatic method based on the temporal variability of the T-wave down slope to assess this variability. Method and Results: Leads V1 to V6 of resting electrocardiograms were recorded in 42 healthy subjects (18-68 years, 22 men). The temporal variability at 50% of the T-wave down slope, deltaT50 (1.5 ± 0.41 milliseconds; range, 0.86-2.66 milliseconds), was measured with an accuracy of 1 millisecond on at least 9 pairs of electrocardiogram complexes with a signal-to-noise ratio more than 10 and changes in the R-R interval less than 150 milliseconds. The correlation between repeated measurements of deltaT50 was high. DeltaT50 was measured without corrections for age, sex, heart rate, T-wave amplitude, signal-to-noise ratio, R-R variability, and QTcF because none of these factors explained more than 4% of the within-subject deltaT50 variability. Conclusion: The beat-to-beat repolarization variability was measured with high fidelity with the deltaT50 method and was a robust measure in healthy volunteers. [Copyright &y& Elsevier]

Published
2011
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332. Analýza závad na DPS pomocí X-RAY

Author

Řihák, Pavel, Vala, Radek, Mlýnek, Martin, Řihák, Pavel, Vala, Radek, and Mlýnek, Martin

Abstract

Diplomová práce je zaměřena na BGA (Ball Grid Array) pouzdra a detekci chyb vzniklých při jejich opravách pomocí rentgenového záření. Popisuje obecně BGA pouzdra podle druhu nosného substrátu, techniky připojování čipů, přes montáž samotných pouzder až po proces opravy desek plošných spojů (dále jen DPS). Práce shrnuje popis defektů, které vznikají procesem opravy. V práci je popsán princip rentgenového záření, jako metoda analýzy defektů pájených spojů. Metoda X – PLANE slouží k detekci vnitřních struktur BGA pouzder a byla potvrzena metalografickým výbrusem a rekonstrukčním softwarem. Dále následuje popis automatického a manuálního měření dutin., This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.

333. Analýza závad na DPS pomocí X-RAY

Author

Řihák, Pavel, Vala, Radek, Mlýnek, Martin, Řihák, Pavel, Vala, Radek, and Mlýnek, Martin

Abstract

Diplomová práce je zaměřena na BGA (Ball Grid Array) pouzdra a detekci chyb vzniklých při jejich opravách pomocí rentgenového záření. Popisuje obecně BGA pouzdra podle druhu nosného substrátu, techniky připojování čipů, přes montáž samotných pouzder až po proces opravy desek plošných spojů (dále jen DPS). Práce shrnuje popis defektů, které vznikají procesem opravy. V práci je popsán princip rentgenového záření, jako metoda analýzy defektů pájených spojů. Metoda X – PLANE slouží k detekci vnitřních struktur BGA pouzder a byla potvrzena metalografickým výbrusem a rekonstrukčním softwarem. Dále následuje popis automatického a manuálního měření dutin., This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.

334. Objective automated quantification of fluorescence signal in histological sections of rat lens

Author

Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, Wählby, Carolina, Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, and Wählby, Carolina

Abstract

Purpose: To develop an automated method to delineate lens epithelial cells and to quantify expression of fluorescent signal of biomarkers in each nucleus and cytoplasm of lens epithelial cells in a histological section. Methods: An automated algorithm was developed in Matlab™ to localize and quantify fluorescence signal in lens epithelial cells in histological images. A region of interest representing the lens epithelium was manually demarcated in each input image. Individual cell nuclei within the region of interest were automatically delineated based on watershed segmentation and thresholding. Fluorescence signal was quantified within nuclei and cytoplasms. The classification of fluorescence signal was based on local background. Classification of cells as labelled or not labelled was thereafter optimized as compared to visual classification of a limited dataset. The performance of the automated classification was evaluated by asking eleven independent blinded observers to classify all cells (n=395) in one lens image. Time consumed by the automatic algorithm and visual /manual classification of nuclei, was recorded. Results: On an average, 77 % of the cells were correctly classified as compared to the majority vote of the visual observers. The average agreement among visual observers was 83 %. However, variation among visual observers was high, and agreement between two visual observers was as low as 71 % in the worst case. Automated classification was on average 10 times faster than manual scoring. Conclusion: The presented method enables objective and fast detection of lens epithelial cells and quantification of expression of fluorescent signal in a histological section of rat lens, with accuracy comparable to the variability between different visual observers. Furthermore, automated scoring is unbiased and reproducible, and results in a 10-fold increase in throughput.

335. Objective automated quantification of fluorescence signal in histological sections of rat lens

Author

Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, Wählby, Carolina, Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, and Wählby, Carolina

Abstract

Purpose: To develop an automated method to delineate lens epithelial cells and to quantify expression of fluorescent signal of biomarkers in each nucleus and cytoplasm of lens epithelial cells in a histological section. Methods: An automated algorithm was developed in Matlab™ to localize and quantify fluorescence signal in lens epithelial cells in histological images. A region of interest representing the lens epithelium was manually demarcated in each input image. Individual cell nuclei within the region of interest were automatically delineated based on watershed segmentation and thresholding. Fluorescence signal was quantified within nuclei and cytoplasms. The classification of fluorescence signal was based on local background. Classification of cells as labelled or not labelled was thereafter optimized as compared to visual classification of a limited dataset. The performance of the automated classification was evaluated by asking eleven independent blinded observers to classify all cells (n=395) in one lens image. Time consumed by the automatic algorithm and visual /manual classification of nuclei, was recorded. Results: On an average, 77 % of the cells were correctly classified as compared to the majority vote of the visual observers. The average agreement among visual observers was 83 %. However, variation among visual observers was high, and agreement between two visual observers was as low as 71 % in the worst case. Automated classification was on average 10 times faster than manual scoring. Conclusion: The presented method enables objective and fast detection of lens epithelial cells and quantification of expression of fluorescent signal in a histological section of rat lens, with accuracy comparable to the variability between different visual observers. Furthermore, automated scoring is unbiased and reproducible, and results in a 10-fold increase in throughput.

336. Analýza závad na DPS pomocí X-RAY

Author

Řihák, Pavel, Vala, Radek, Řihák, Pavel, and Vala, Radek

Abstract

Diplomová práce je zaměřena na BGA (Ball Grid Array) pouzdra a detekci chyb vzniklých při jejich opravách pomocí rentgenového záření. Popisuje obecně BGA pouzdra podle druhu nosného substrátu, techniky připojování čipů, přes montáž samotných pouzder až po proces opravy desek plošných spojů (dále jen DPS). Práce shrnuje popis defektů, které vznikají procesem opravy. V práci je popsán princip rentgenového záření, jako metoda analýzy defektů pájených spojů. Metoda X – PLANE slouží k detekci vnitřních struktur BGA pouzder a byla potvrzena metalografickým výbrusem a rekonstrukčním softwarem. Dále následuje popis automatického a manuálního měření dutin., This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.

337. Objective automated quantification of fluorescence signal in histological sections of rat lens

Author

Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, Wählby, Carolina, Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, and Wählby, Carolina

Abstract

Purpose: To develop an automated method to delineate lens epithelial cells and to quantify expression of fluorescent signal of biomarkers in each nucleus and cytoplasm of lens epithelial cells in a histological section. Methods: An automated algorithm was developed in Matlab™ to localize and quantify fluorescence signal in lens epithelial cells in histological images. A region of interest representing the lens epithelium was manually demarcated in each input image. Individual cell nuclei within the region of interest were automatically delineated based on watershed segmentation and thresholding. Fluorescence signal was quantified within nuclei and cytoplasms. The classification of fluorescence signal was based on local background. Classification of cells as labelled or not labelled was thereafter optimized as compared to visual classification of a limited dataset. The performance of the automated classification was evaluated by asking eleven independent blinded observers to classify all cells (n=395) in one lens image. Time consumed by the automatic algorithm and visual /manual classification of nuclei, was recorded. Results: On an average, 77 % of the cells were correctly classified as compared to the majority vote of the visual observers. The average agreement among visual observers was 83 %. However, variation among visual observers was high, and agreement between two visual observers was as low as 71 % in the worst case. Automated classification was on average 10 times faster than manual scoring. Conclusion: The presented method enables objective and fast detection of lens epithelial cells and quantification of expression of fluorescent signal in a histological section of rat lens, with accuracy comparable to the variability between different visual observers. Furthermore, automated scoring is unbiased and reproducible, and results in a 10-fold increase in throughput.

338. Analýza závad na DPS pomocí X-RAY

Author

Řihák, Pavel, Vala, Radek, Řihák, Pavel, and Vala, Radek

Abstract

Diplomová práce je zaměřena na BGA (Ball Grid Array) pouzdra a detekci chyb vzniklých při jejich opravách pomocí rentgenového záření. Popisuje obecně BGA pouzdra podle druhu nosného substrátu, techniky připojování čipů, přes montáž samotných pouzder až po proces opravy desek plošných spojů (dále jen DPS). Práce shrnuje popis defektů, které vznikají procesem opravy. V práci je popsán princip rentgenového záření, jako metoda analýzy defektů pájených spojů. Metoda X – PLANE slouží k detekci vnitřních struktur BGA pouzder a byla potvrzena metalografickým výbrusem a rekonstrukčním softwarem. Dále následuje popis automatického a manuálního měření dutin., This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.

339. Analýza závad na DPS pomocí X-RAY

Author

Řihák, Pavel, Vala, Radek, Řihák, Pavel, and Vala, Radek

Abstract

Diplomová práce je zaměřena na BGA (Ball Grid Array) pouzdra a detekci chyb vzniklých při jejich opravách pomocí rentgenového záření. Popisuje obecně BGA pouzdra podle druhu nosného substrátu, techniky připojování čipů, přes montáž samotných pouzder až po proces opravy desek plošných spojů (dále jen DPS). Práce shrnuje popis defektů, které vznikají procesem opravy. V práci je popsán princip rentgenového záření, jako metoda analýzy defektů pájených spojů. Metoda X – PLANE slouží k detekci vnitřních struktur BGA pouzder a byla potvrzena metalografickým výbrusem a rekonstrukčním softwarem. Dále následuje popis automatického a manuálního měření dutin., This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.

340. Analýza závad na DPS pomocí X-RAY

Author

Řihák, Pavel, Vala, Radek, Mlýnek, Martin, Řihák, Pavel, Vala, Radek, and Mlýnek, Martin

Abstract

Diplomová práce je zaměřena na BGA (Ball Grid Array) pouzdra a detekci chyb vzniklých při jejich opravách pomocí rentgenového záření. Popisuje obecně BGA pouzdra podle druhu nosného substrátu, techniky připojování čipů, přes montáž samotných pouzder až po proces opravy desek plošných spojů (dále jen DPS). Práce shrnuje popis defektů, které vznikají procesem opravy. V práci je popsán princip rentgenového záření, jako metoda analýzy defektů pájených spojů. Metoda X – PLANE slouží k detekci vnitřních struktur BGA pouzder a byla potvrzena metalografickým výbrusem a rekonstrukčním softwarem. Dále následuje popis automatického a manuálního měření dutin., This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.

341. Analýza závad na DPS pomocí X-RAY

Author

Řihák, Pavel, Vala, Radek, Mlýnek, Martin, Řihák, Pavel, Vala, Radek, and Mlýnek, Martin

Abstract

Diplomová práce je zaměřena na BGA (Ball Grid Array) pouzdra a detekci chyb vzniklých při jejich opravách pomocí rentgenového záření. Popisuje obecně BGA pouzdra podle druhu nosného substrátu, techniky připojování čipů, přes montáž samotných pouzder až po proces opravy desek plošných spojů (dále jen DPS). Práce shrnuje popis defektů, které vznikají procesem opravy. V práci je popsán princip rentgenového záření, jako metoda analýzy defektů pájených spojů. Metoda X – PLANE slouží k detekci vnitřních struktur BGA pouzder a byla potvrzena metalografickým výbrusem a rekonstrukčním softwarem. Dále následuje popis automatického a manuálního měření dutin., This thesis is focused on BGA packages and fault detection after rework using X – Ray. There is a description of BGA packages by carrier substrate, techniques of connecting on chip, from mounting packages to repair printed circuit boards (hereafter PCB). Thesis summarizes description of defects, which are created after rework process. There is also description of X – Ray as method for analyzing defects. X – PLANE method used to detect internal structure of BGA packages and it was confirmed by microsection and by software for reconstruction. Description of automatic and manual measurement is follow.

342. Objective automated quantification of fluorescence signal in histological sections of rat lens

Author

Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, Wählby, Carolina, Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, and Wählby, Carolina

Abstract

Purpose: To develop an automated method to delineate lens epithelial cells and to quantify expression of fluorescent signal of biomarkers in each nucleus and cytoplasm of lens epithelial cells in a histological section. Methods: An automated algorithm was developed in Matlab™ to localize and quantify fluorescence signal in lens epithelial cells in histological images. A region of interest representing the lens epithelium was manually demarcated in each input image. Individual cell nuclei within the region of interest were automatically delineated based on watershed segmentation and thresholding. Fluorescence signal was quantified within nuclei and cytoplasms. The classification of fluorescence signal was based on local background. Classification of cells as labelled or not labelled was thereafter optimized as compared to visual classification of a limited dataset. The performance of the automated classification was evaluated by asking eleven independent blinded observers to classify all cells (n=395) in one lens image. Time consumed by the automatic algorithm and visual /manual classification of nuclei, was recorded. Results: On an average, 77 % of the cells were correctly classified as compared to the majority vote of the visual observers. The average agreement among visual observers was 83 %. However, variation among visual observers was high, and agreement between two visual observers was as low as 71 % in the worst case. Automated classification was on average 10 times faster than manual scoring. Conclusion: The presented method enables objective and fast detection of lens epithelial cells and quantification of expression of fluorescent signal in a histological section of rat lens, with accuracy comparable to the variability between different visual observers. Furthermore, automated scoring is unbiased and reproducible, and results in a 10-fold increase in throughput.

343. Objective automated quantification of fluorescence signal in histological sections of rat lens

Author

Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, Wählby, Carolina, Talebizadeh, Nooshin, Zhou Hagström, Nanna, Yu, Zhaohua, Kronschläger, Martin, Söderberg, Per, and Wählby, Carolina

Abstract

Purpose: To develop an automated method to delineate lens epithelial cells and to quantify expression of fluorescent signal of biomarkers in each nucleus and cytoplasm of lens epithelial cells in a histological section. Methods: An automated algorithm was developed in Matlab™ to localize and quantify fluorescence signal in lens epithelial cells in histological images. A region of interest representing the lens epithelium was manually demarcated in each input image. Individual cell nuclei within the region of interest were automatically delineated based on watershed segmentation and thresholding. Fluorescence signal was quantified within nuclei and cytoplasms. The classification of fluorescence signal was based on local background. Classification of cells as labelled or not labelled was thereafter optimized as compared to visual classification of a limited dataset. The performance of the automated classification was evaluated by asking eleven independent blinded observers to classify all cells (n=395) in one lens image. Time consumed by the automatic algorithm and visual /manual classification of nuclei, was recorded. Results: On an average, 77 % of the cells were correctly classified as compared to the majority vote of the visual observers. The average agreement among visual observers was 83 %. However, variation among visual observers was high, and agreement between two visual observers was as low as 71 % in the worst case. Automated classification was on average 10 times faster than manual scoring. Conclusion: The presented method enables objective and fast detection of lens epithelial cells and quantification of expression of fluorescent signal in a histological section of rat lens, with accuracy comparable to the variability between different visual observers. Furthermore, automated scoring is unbiased and reproducible, and results in a 10-fold increase in throughput.

344. Evaluation of the EMG spontaneous activity in tetany: further development of a method of automatic analysis

Author

Starita A., Giusti A., Rossi B., and Sartucci F.

Subjects
Adult, Tetany, EMG, Hypocalcemia, Electromyography, Muscles, Neuromuscular Junction, Humans, musculoskeletal system, Child, automatic analysis
Abstract

Because of the unspecificity of its signs and symptoms, which may be quite various and vague, tetany represents a [human] clinical syndrome rather difficult to define. Hypocalcemia and alkalosis are its principal causes, also another syndrome, characterized by severe tetany but with normal plasma level of electrolytes, was described. In this case tetany is generally attributed to a decreased tissue Ca-pool or to the reduction of the intracellular Mg. Besides these factors also the K plays an important role in the clinical symptoms of the hypocalcemic tetany. Since there are many unspecific tetanic equivalents and a large variety of etiopathogenetic mechanisms and, moreover, it is difficult to quantize exactly the increased neuromuscular excitability, a special attention was paid to the EMG [electromyograph] spontaneous activity during the ischemic test. A method was proposed of automatic analysis of the EMG spontaneous activity due to neuromuscular hyperexcitability in tetanic syndrome. Aim of the present work is to improve the method, and to develop a technique for discriminating among different classes of subjects affected by tetany, i.e., with different symptoms and values of the humoral parameters.

Published
1984

346. Automatic analysis of atrial activation in mitral valve stenosis

Author

BACIARELLO G, BELLA R, IANNUCCI G, VILLANI M, ALESSANDRI N, MIRARCHI V, REALE A., SGRIGNA, Vittorio, Baciarello, G, Bella, R, Sgrigna, Vittorio, Iannucci, G, Villani, M, Alessandri, N, Mirarchi, V, and Reale, A.

Subjects
Mitral valve stenosi, Automatic analysis, Atrial activation
Published
1988

347. A digital processing of the rheoencephalogram

Author

Išgum, Velimir, Baturić, Petar, Ribičić, Branko, and Baturić, Petar

Subjects
rheoencephalogram, automatic analysis
Abstract

Rheoencephalographic records (REG) can be analyzed by different ways. From simple description of the morphology of a REG curve to the complex planimetric calculations. From the impression of rheoencephalographist which can hardly be passed on to others and convenience them to accept this impressions as normal, respectively pathological, to the determination of the coded points on a REG curve taken in relation with its first derivation. This last method of analysis is or great value even tough it requires a good deal of time. Determining and calculating the parameters of REG, especially if applied with the REG and functional tests, takes as long as one hour per individual and the accuracy depends greatly on the REG quality. Because of time required for the manual determination of a rheoencephalographic parameter and its calculation and for the sake of accuracy, we were urged to develop a digital processing method of the rheoencephalograrm.

Published
1983

348. Un environnement pédagogique dédié aux projets collectifs à distance intégrant une assistance aux apprenants et au chef de projet

Author

Sébastien George, Pascal Leroux, Laboratoire d'Informatique de l'Université du Maine (LIUM), Le Mans Université (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Informatique Cognitive et d'Environnements de Formation - Téluq, l'université à distance de l'UQAM (Centre LICEF - TÉLUQ), Université du Québec à Montréal = University of Québec in Montréal (UQAM), and Frasson C., Pécuchet J.-P.

Subjects
Information and communications technologyEducational technologies, environnement d'apprentissage à distance, EducationComputer-assisted education, analyse automatique, pédagogie de projet, [SHS.EDU]Humanities and Social Sciences/Education, Distance Learning Environment, Education et informatiqueNouvelles technologies de l'information et de la communication, Automatic Analysis, Apprentissage Collaboratif Assisté par Ordinateur, Education -- Data processing, Computer-Supported Collaborative Learning, Project-Based Learning
Abstract

Les actes peuvent être commandés à l'adresse suivante : http://tice2002.insa-lyon.fr/fr/sommaire.html; The setting-up of collective project is an educational approach which has shown his efficiency in professional education and specially in engineering school. We have worked on the setting-up of such an approach in a distance education context. We present in this paper a distance collective project organization based on a team made of a learners triad and a project leader. Furthermore the project is structured by a sequence of asynchronous and synchronous steps in which learners write individual and collective documents. With this organizational model we designed a computer environment named SPLACH that supports collective projects and that integrates an analysis and an assistance system.; La mise en place d'activités de projet collectif est une démarche pédagogique qui a fait ses preuves dans les cursus de formation professionnelle et en particulier dans les écoles d'ingénieurs. Il nous a donc semblé très intéressant de réfléchir à la mise en œuvre d'une telle démarche dans le cadre de formation à distance. Nous proposons dans cet article une organisation de projet collectif à distance fondée, d'une part, sur la notion d'équipe composée d'une triade d'apprenants et d'un chef de projet, et, d'autre part, sur la structuration des projets sous la forme d'une succession d'étapes synchrones et asynchrones avec rédaction de documents individuels et collectifs permettant de structurer lesactivités tout en assurant un rythme au projet. Ce modèle d'organisation a permis de concevoir et développer l'environnement SPLACH support de projets collectifs intégrant un système d'analyse et d'assistance aux activités collectives.

349. Automatic simulation platform to support product design

Author

Antti Hynninen and Kai Katajamäki

Subjects
HPC, IC-engine, optimization, automatic analysis
Abstract

In product design and development there is an ever increasing need for effectiveness. Due to the tightening demands concerning the launch of new products, automatic analysis processes are of great importance. Computational power is increasing continuously, at the same time the hardware costs are decreasing. The variety of commercial as well as open source simulation software is huge. Additionally, easy to use and learn scripting languages are more and more becoming an important part of the whole analysis process. To control the whole product design process within this framework, effective software independent tools are needed. Using the automated analysis process methods is effective when seeking the optimal solution via optimization or parameter variation, for example. Automated analysis process increases reliability by avoidance of human errors. Different analysis types can be linked to the same process, enabling multiphysical solutions. With the automated process also the visualization and documentation of the results is easy. As conclusion, the automatic analysis system presented in this study gives many benefits in the design of existing or completely new products. Modern and flexible software combined with effective hardware and connected together with effective scripting languages makes it possible to develop wholly automatic and reliable calculation processes. These processes can then be combined with optimization loops thus enabling product optimization and control of the inevitable uncertainty in model parameters. As a test case, the automatic analysis system presented in this study is applied to resonance avoidance parametrization of a medium speed IC-engine by optimizing techniques.

350. Image processing procedures for analysis of electron back scattering patterns

Author

Krieger Lassen, N. C., Dorte Juul Jensen, and Conradsen, K.

Subjects
computer procedure, backscattered electrons, Electron back scattering patterns, Hough transform, line detection, electron diffraction, Biology, automatic analysis, image processing, crystallographic orientation
Abstract

At present, computer-aided Electron Back Scattering Pattern (EBSP) analysis often requires large amounts of operator time if statistically reliable measurements are needed. This paper presents ways to automatically detect and localize bands in EBSPs and thereby enable fully automatic EBSP analysis. The main focus will be on a procedure using a modified Hough transform by which more than 12 bands in a typical EBSP can be detected and localized. This procedure seems as effective and reliable for extracting the bands of EBSPs as any human operator. The performance of this procedure is compared with that of other image processing procedures.

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