602 results on '"IFs"'
Search Results
52. A Topological Structure Model and a Nonlinear Formation Model of ZnO Tetrapods
- Author
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Sviatoslav V. Avilov, Larisa A. Bityutskaya, and Evelina P. Domashevskaya
- Subjects
topological space ,crystal polymorphism ,hierarchy ,dynamic chaos ,selfassembly ,ifs ,fractal ,Chemistry ,QD1-999 - Abstract
Objectives. Development of a generalised mathematical model of hierarchical crystalline nanoforms of zinc oxide tetrapods produced by vapor transport synthesis under the conditions of chaotic particle dynamics. Methods and methodology. Topological analysis of nanoscale polymorphic transformations, nonlinear dynamics of self-assembled structures formation under the conditions of dynamic chaos. An algorithm to construct an attractor of an affi ne system of iterated functions with parameters determined by experimental diagnostic methods: electron microscopy, diffraction studies, and numerical methods of quantum-chemical calculations for core of hierarchical structure. Results. The classifi cation of tetrapods as a hierarchical structures was established; nanotechnological cycle of self-organization of zinc oxide tetrapods chaos - core - percolation system - crystal was determined; the tetrapod structure was mathematically identifi ed as four linked topological spaces of wurtzite crystal growth; the tetrapod formation modelling method was developed by constructing an attractor of iterated function systems; the rule of the relation linking a dot in the nonlinear stochastic dynamic system model attractor with the topological crystallisation space in the formation of the self-assembled hierarchical crystal structure was established. A theoretical approach was developed that allows creating and modifying models of three dimensional space-distributed hierarchical crystal structures characterised by novel physical and topological properties, as compared to a monocrystal, as well as controlling their form and classifying the structures by topological and symmetrical properties. Conclusion. The formation of zinc oxide tetrapods occurs in four linked topological spaces, modelled as continuous maps of a B4 crystal growth space. The transition from the sphalerite core growth to the growth of four wurtzite crystals that constitute the tetrapod hierarchical structure is considered as topological space growth disruption during a polymorphic transformation of nanoscale. The topological approach involving the affi ne iterated function systems may be applied to modelling precrystallisation stages of multipods, as well as dendritic crystal structures and fractal nanocomposites, and has the capacity to predict their morphology, geometrical and structural properties.
- Published
- 2019
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53. Soil-health management in nutrient-deficient soils: A case study of Indian farmers
- Author
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PAWAN KUMAR, P S SHEHRAWAT, RAJ KUMAR, ASHMA ASHMA, SHUBHAM SHUBHAM, and MUJAHID KHAN
- Subjects
Awareness level ,IFS ,INM ,Organic farming ,Soil health ,Agriculture - Abstract
The present study was carried out in two agro-climatic zones of the state of Haryana in India, viz. north-eastern zone and south-western zone with the objective that how farmers approach soil-health management in nutrientdeficient soils. The outcomes have been visualised in this paper after conducting a field survey during 2018–19 of 240 farmers, who were interviewed with a well-structured interview schedule. The study found that respondents’ awareness level was good about the Integrated Nutrient Management (INM), had a rich knowledge about Integrated Farming System (IFS) and were well aware about organic farming. Major constraints faced by the respondents in INM, IFS and organic farming were ‘high fertilizer cost and manures are bulky to handle’, ‘high rate of interest on borrowings and initial cost of production’ and ‘prices are not remunerative’, respectively. The study concluded that there was a gap in awareness level of soil health management practices among the farmers. Hence, there is an immense need to motivate and encourage the farmers.
- Published
- 2021
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54. Peano–Gosper, Koch and Minkowski fractal curves-based novel hybrid antenna using modified partial ground plane for multi-standard wireless applications.
- Author
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Sharma, Narinder, Bhatia, Sumeet Singh, and Sharma, Vipul
- Subjects
- *
FRACTAL analysis , *ANTENNAS (Electronics) , *FRACTALS , *REFLECTANCE , *TELECOMMUNICATION satellites , *MILITARY communications - Abstract
This paper presents the unique structure of a hybrid antenna with a blend of Peano–Gosper, Koch and Minkowski curves using a modified partial ground plane for multi-standard wireless applications. Initially, the Minkowski and Koch curves are amalgamated by using a versatile mathematical tool called Iterative Function System (IFS), and furthermore, their resultant structure is superimposed on each segment of Peano–Gosper curve to obtain the novel geometry of hybrid fractal antenna named Gosper–Koch–Minkowski Hybrid Fractal Antenna (GKMHFA). The partial ground plane with 50 Ω transmission line fed is used to analyse the performance of designed structure and found that it exhibits five different frequency bands above 9 GHz in the frequency range 1–20 GHz. Consequently, to attain the frequency bands below 9 GHz with enhanced bandwidth and reflection coefficient, the partial ground plane has been modified. The proposed antenna with the modified ground plane reveals seven distinct frequency points 1.5, 3.4, 8.6, 12.2, 14.1, 15.3 and 18.9 GHz with a maximum bandwidth 5.0 GHz along with improved reflection coefficient i.e. −45.65 dB at 1.5 GHz. The proposed antenna also reports positive gain and stable radiation patterns in the operational frequency bands, which make it a proficient candidate for the multi-standard wireless applications such as GPS, terrestrial communication, PCS, UMTS, advance wireless services, Bluetooth, WLAN, Wi-Fi, Wi-MAX, military satellite communication, television broadcasting, broadcasting satellite, FSS, Ku-band and K-band. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
55. COMPARATIVE ANALYSIS OF DIFFERENT FOOD SAFETY SYSTEMS.
- Author
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Markovska, Aleksandra and Atanasova-Pancevska, Natalija
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FOOD safety ,FOOD production ,MEAT industry ,DATA analysis ,QUESTIONNAIRES - Abstract
Food safety standards are a prerequisite for the good positioning of food products in the global market. Effective implementation of food safety systems is taken as evidence for the production of a safe product. However, many countries are requiring implementation of food safety system or standard that they prefer or recognize. This approach is contrary to the current concept of globalization, which aims to ensure facilitated movement and exchange of goods across the globe. In order to get the opportunity to export their products in different markets, it happens one company during a year they have more than four audits according to similar food safety management system (FSMS) and maintain more than five food safety systems to. The purpose of this paper was to compare the data obtained from twenty Macedonian export companies on the safety of their products after the implementation of different food safety systems. For that purpose, in the past period, a survey was conducted through a survey of 20 food production export-oriented companies in Macedonia that export to more than one continent. Companies who took role in the survey are from confectionary, fruits and vegetables processing and meat industry. Questionnaires cover several important aspects: A) Similarities and differences between different food safety systems B) Impact on the production process of different food safety systems C) Impact on food safety on the microbiological, chemical, and physical parameters of the product. 20 export-oriented companies were included, most located in the Skopje region, companies from the eastern region as well as from the western region. The information was acquired online from the participants through a questionnaire prepared in Google form. For the comparison of data we used arithmetical mean value to analyze answers from the questionnaire. This study revealed that there is no big differences between different food safety systems implemented in companies in our country. Also, there was no significant impact on the production process of different food safety systems and significant impact on food safety on the microbiological, chemical, and physical parameters of the product. From the obtained results it was determined that 90% of the obtained results indicate that the introduction of new food safety systems does not have an additional impact on the safety of the final products. [ABSTRACT FROM AUTHOR]
- Published
- 2021
56. Improved Decision Making Through IFSS
- Author
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Sooraj, T. R., Mohanty, R. K., Tripathy, B. K., Howlett, Robert James, Series Editor, Jain, Lakhmi C., Series Editor, Satapathy, Suresh Chandra, editor, Bhateja, Vikrant, editor, and Das, Swagatam, editor
- Published
- 2018
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57. Intuitionistic Fuzzy Shortest Path in a Multigraph
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Biswas, Siddhartha Sankar, Alam, Bashir, Doja, M. N., Barbosa, Simone Diniz Junqueira, Editorial Board Member, Filipe, Joaquim, Editorial Board Member, Kotenko, Igor, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Chen, Phoebe, Founding Editor, Sivalingam, Krishna M., Founding Editor, Washio, Takashi, Founding Editor, Yuan, Junsong, Founding Editor, Panda, Brajendra, editor, Sharma, Sudeep, editor, and Roy, Nihar Ranjan, editor
- Published
- 2018
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58. Integrated Farming Systems for Sustainable Agriculture
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Dar, N. A., Lone, Bilal Ahmad, Alaie, B. A., Dar, Z. A., Gulzafar, Bahar, F. A., Haque, S. A., Singh, K. N., Sengar, Rakesh Singh, editor, and Singh, Ashu, editor
- Published
- 2018
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59. Analyzing impact of corporate governance index on working capital management through fractal functions.
- Author
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Gupta, Deepika and Pandey, Asheesh
- Subjects
- *
WORKING capital , *CORPORATE governance , *PUBLIC companies , *AUDIT committees - Abstract
This study investigates the influence of corporate governance standards on the effectiveness of working capital management in various sectors of the publicly traded companies in India. Corporate governance practices like board meetings, CEO tenure, size of the audit committee, board size and women directors are used for constructing a corporate governance index. Corporate governance policies' impact on working capital management efficiency is assessed by considering profit after tax and total assets as control variables. Data of listed companies with NSE is extracted from the Bloomberg database for the time frame spanning from 2013 to 2023. α -fractal function and regression model are used to describe the influence of corporate governance index on liquidity of some selected sectors of the listed Indian companies. This study evaluates how corporate governance impacts the working capital management of different sectors. The findings of this study indicate that corporate governance profoundly influences the efficacy of working capital management across different sectors of the Indian economy. • This study examines how CGI affects sector-wise WCM of Indian listed firms. • The relationship is explained using regression model and α -fractal function. • The material sector shows an inverse relationship between CGI and WCM. • CGI's overall impact on working capital is determined via fractal interpolation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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60. Utility of Integrated Farming Systems: A Perception Study from Kuttanad
- Author
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Nair, Mamatha G., Jayalekshmi, G., and Kumar, N. Kishore
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- 2019
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61. An Urban Scheme for the ECMWF Integrated Forecasting System: Single‐Column and Global Offline Application
- Author
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J. R. McNorton, G. Arduini, N. Bousserez, A. Agustí‐Panareda, G. Balsamo, S. Boussetta, M. Choulga, I. Hadade, and R. J. Hogan
- Subjects
IFS ,land surface modeling ,NWP ,single‐layer urban scheme ,urban heat island ,urban modeling ,Physical geography ,GB3-5030 ,Oceanography ,GC1-1581 - Abstract
Abstract The societal benefits of numerical weather prediction (NWP) forecasts are most evident in populated areas. An urban representation within NWP models should provide improved forecast accuracy. Here, we present the preliminary implementation of an urban scheme within the Integrated Forecasting System (IFS) using a simplified single‐layer urban canopy model. The scheme makes assumptions of canyon geometry and considers fluxes from roads, walls, and roofs. Temperature observations were used to optimize single‐column model (SCM) parameters using the Gauss‐Newton method. Observation comparisons over six European cities, show a 2‐m temperature root‐mean‐squared error reduction from 1.85 to 1.75 K with the urban scheme. Optimized parameters were used globally at kilometric scale in a land surface model. A sensitivity experiment assuming a 100% urban world showed spatially averaged northern hemisphere 2‐m temperatures increased by 0.54 K (January) and 0.42 K (July) at night caused by changes in the albedo, emissivity, roughness, and thermal and hydrological properties. Global ∼1‐km resolution simulations using ancillary urban mapping information produce an urban heat island effect over major and minor conurbations. Only major conurbations were well represented at ∼9‐km resolution. Results from SCM simulations show a heightening of the planetary boundary layer over city sites, with the largest enhancements occurring at night in July (84 ± 48 m) caused by an increased sensible heat flux. These initial developments show the importance of a high‐resolution urban representation within NWP models. Improved parameterization and mapping will enable an online representation of energy, water, and trace gas fluxes over residential areas.
- Published
- 2021
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62. An Urban Scheme for the ECMWF Integrated Forecasting System: Single‐Column and Global Offline Application.
- Author
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McNorton, J. R., Arduini, G., Bousserez, N., Agustí‐Panareda, A., Balsamo, G., Boussetta, S., Choulga, M., Hadade, I., and Hogan, R. J.
- Subjects
- *
URBAN heat islands , *ATMOSPHERIC boundary layer , *LONG-range weather forecasting , *NUMERICAL weather forecasting , *HEAT storage - Abstract
The societal benefits of numerical weather prediction (NWP) forecasts are most evident in populated areas. An urban representation within NWP models should provide improved forecast accuracy. Here, we present the preliminary implementation of an urban scheme within the Integrated Forecasting System (IFS) using a simplified single‐layer urban canopy model. The scheme makes assumptions of canyon geometry and considers fluxes from roads, walls, and roofs. Temperature observations were used to optimize single‐column model (SCM) parameters using the Gauss‐Newton method. Observation comparisons over six European cities, show a 2‐m temperature root‐mean‐squared error reduction from 1.85 to 1.75 K with the urban scheme. Optimized parameters were used globally at kilometric scale in a land surface model. A sensitivity experiment assuming a 100% urban world showed spatially averaged northern hemisphere 2‐m temperatures increased by 0.54 K (January) and 0.42 K (July) at night caused by changes in the albedo, emissivity, roughness, and thermal and hydrological properties. Global ∼1‐km resolution simulations using ancillary urban mapping information produce an urban heat island effect over major and minor conurbations. Only major conurbations were well represented at ∼9‐km resolution. Results from SCM simulations show a heightening of the planetary boundary layer over city sites, with the largest enhancements occurring at night in July (84 ± 48 m) caused by an increased sensible heat flux. These initial developments show the importance of a high‐resolution urban representation within NWP models. Improved parameterization and mapping will enable an online representation of energy, water, and trace gas fluxes over residential areas. Plain Language Summary: Urban areas make up only a small fraction of the Earth's surface; however, they are home to over 50% of the world's population. In these areas a phenomenon known as the urban heat island effect causes increased temperatures due to human activities, an effect often missing in weather forecasts. Forecasts, generated using computer models, consider not only the atmosphere but also the role of the land surface on the weather above. Typically these models do not include an urban map, so they miss key urban processes. We introduced a representation of urban areas to the model of the European Center for Medium‐Range Weather Forecasts. We considered several ways in which the urban environment interacts with the weather, including through changes in heat storage and treatment of rainfall. We find these developments result in a more accurate model forecast over six European cities. The model accurately predicts the increased heating observed over cities at night and some of the observed changes in the atmosphere. Future work should continue to improve the urban representation in weather and air quality/greenhouse gas models by implementing an urban scheme in operational forecasts. Key Points: An urban scheme has been introduced and optimized within the ECMWF IFS single‐column and surface‐only modelAssuming an urban world, average nighttime 2‐m temperatures increased for January (0.54 K) and July (0.42 K) in a surface only simulationUsing realistic urban cover for eight cities, PBL height in July increases by an average of 66 and 84 m for the day and night, respectively [ABSTRACT FROM AUTHOR]
- Published
- 2021
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63. Screening for Core Genes Related to Pathogenesis of Alzheimer’s Disease
- Author
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Longxiu Yang, Yuan Qin, and Chongdong Jian
- Subjects
Alzheimer’s disease ,IFS ,feature selection ,KNN model ,protein-protein interaction network ,Biology (General) ,QH301-705.5 - Abstract
Alzheimer’s disease (AD), a nervous system disease, lacks effective therapies at present. RNA expression is the basic way to regulate life activities, and identifying related characteristics in AD patients may aid the exploration of AD pathogenesis and treatment. This study developed a classifier that could accurately classify AD patients and healthy people, and then obtained 3 core genes that may be related to the pathogenesis of AD. To this end, RNA expression data of the middle temporal gyrus of AD patients were firstly downloaded from GEO database, and the data were then normalized using limma package following a supplementation of missing data by k-Nearest Neighbor (KNN) algorithm. Afterwards, the top 500 genes of the most feature importance were obtained through Max-Relevance and Min-Redundancy (mRMR) analysis, and based on these genes, a series of AD classifiers were constructed through Support Vector Machine (SVM), Random Forest (RF), and KNN algorithms. Then, the KNN classifier with the highest Matthews correlation coefficient (MCC) value composed of 14 genes in incremental feature selection (IFS) analysis was identified as the best AD classifier. As analyzed, the 14 genes played a pivotal role in determination of AD and may be core genes associated with the pathogenesis of AD. Finally, protein-protein interaction (PPI) network and Random Walk with Restart (RWR) analysis were applied to obtain core gene-associated genes, and key pathways related to AD were further analyzed. Overall, this study contributed to a deeper understanding of AD pathogenesis and provided theoretical guidance for related research and experiments.
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- 2021
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64. Risk Analysis of 24 Residual Antibiotics in Poultry Eggs in Shandong, China (2018–2020)
- Author
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Xiaoyu Ma, Ling Chen, Lingling Yin, Youzhi Li, Xiuzhen Yang, Zhiguo Yang, Guihua Li, and Hu Shan
- Subjects
Shandong ,antibiotic residues ,IFS ,risk evaluation ,Veterinary medicine ,SF600-1100 - Abstract
Although antibiotics have played a certain positive role in the prevention and treatment of poultry diseases, as well as the promotion of poultry growth, some farmers use antibiotics in an incorrect way in the breeding process, resulting in antibiotic residues in poultry tissues, organs and edible products. Residual antibiotics enter the human body through the food chain and accumulate, which not only causes poisoning and allergic reactions, but also drug resistance of pathogenic microorganisms, thus endangering the health of consumers. In this investigation, the residues of 24 antibiotics, including fluoroquinolones, sulfonamides, macrolides, tetracyclines, antivirals, lincomycin and florfenicol, were analyzed in 1211 poultry egg samples in Shandong, China, from 2018 to 2020. Then, based on the per capita intake of poultry eggs recommended in the dietary guidelines of Chinese residents, the maximum residue limit of veterinary drugs specified in Chinese regulations and the average weight of males and females aged 18 and over in 2020, the risk of residual antibiotics was evaluated by International Food Safety indices (IFS). The detection results showed that 104 of 1211 samples were detected with antibiotic residues, with a detection rate of 8.58%. Among them, the main residues were enrofloxacin, sulfonamides and florfenicol. The IFS calculation results showed that the IFS of residual antibiotics ranged from 1.44 × 10−7 to 0.102. Therefore, although enrofloxacin, sarafloxacin, danofloxacin, sulfonamides, tilmicosin, doxycycline, florfenicol, which are banned during egg laying, were detected in poultry eggs in Shandong, these residues did not pose a threat to the health of Chinese adult consumers, according to the daily dietary habits of Chinese people. However, it is strongly suggested that Shandong should strengthen the monitoring of antibiotic use during egg laying.
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- 2022
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65. Fractal dimension analysis of financial performance of resulting companies after mergers and acquisitions.
- Author
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Verma, Shubham Kumar and Kumar, Satish
- Subjects
- *
FINANCIAL statements , *MERGERS & acquisitions , *CORPORATE finance , *CORPORATE profits , *FRACTAL dimensions - Abstract
This study primarily focuses on financial performance after mergers and acquisitions of resulting companies. We have taken the eleven years data of resulting companies of mergers and acquisitions took place in the financial years 2016-17 & 2017-18 from the Bloomberg database. In which, we analyse pre-and post-mergers and acquisitions, considering four years data of pre- and four years post. Further, analyze the factor influencing financial performance and how to overcome them with their long term strategy. In this study, we run regression model to get coefficients, and further use that to put into interpolation fractal function to elaborate the conditions of the mergers and acquisitions. We find the most of the companies have their positive impact on financial performance after mergers and acquisitions. However, overall impact may be reflected in net income which leads to increase in their annual accounts of the particular firms. Some of the factors show the big troubles due to non-avoidable elements. Accordingly, we evaluate overall impact on their financial performance elements i.e. net income, EBIT, etc. of resulting companies. • This study focuses on the financial performance of resulting companies after mergers and acquisitions. • Examines factors influencing financial performance and strategies to overcome them. • Uses regression model to calculate coefficients and interpolation fractal function. • Finds most companies have positive impact on financial performance post-mergers and acquisitions. • Overall impact mainly reflected in net income, leading to increased annual accounts using a fractal interpolation function. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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66. Creativity, the Engine of Artistic Research.
- Author
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VICOVAN, Ana
- Subjects
ART research ,CREATIVE thinking ,TRUTHFULNESS & falsehood ,PERFORMING arts ,REVOLUTIONARIES - Abstract
Creative thinking has long been considered essential for the development and advancement of numerous fields included in the sciences and the arts. It is for this reason that I consider the rapport between creativity and genuine human connection to be essential in establishing the credibility of the modern-day artistresearcher. The importance of exploring revolutionary ways of benefiting society through art is made evident by the latter’s transformation and survival throughout history as well as its interdisciplinary qualities. Looking at various examples from the field of performing arts, I will analyse what I consider to be the most noteworthy facts about the field of artistic research, concluding with significant viewpoints about its future, underlining the fact that scientific and artistic researchers share the same creative thinking that fuels their curiosity, originality and necessity to discover revolutionary viewpoints of approaching societal problems in order to get their messages across. [ABSTRACT FROM AUTHOR]
- Published
- 2020
67. Empirical Microeconomics in Changing Times: A Reflection on 50 Years of IFS Research.
- Author
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Banks, James and Blundell, Richard
- Subjects
MICROECONOMICS ,TAXATION ,GOVERNMENT revenue ,GOVERNMENT policy ,LABOR market - Abstract
Since the publication of the Meade Report in 1978 and the establishment of the Fiscal Studies journal in 1979, IFS has been a world leader in the microeconomic analysis of tax policy. Here we document the growing importance of rigorous empirical analysis in our academic and policy research. We point to the expanding reach of IFS research outside the pure analysis of tax policy in the years following the Meade Report and the key role played by the ESRC Centre for the Microeconomic Analysis of Public Policy, established in 1991. This Centre provided the environment for long‐term research across a wide set of fields that has enabled IFS to stay ahead in the policy debate and maintain a leading position in academic research. The breadth and depth of work in tax policy as it impacted on individuals, on families, on the labour market, on firms, on innovation, on retirement, on capital markets and on government revenues are exemplified through the Mirrlees Review. The expansion of IFS research into a broader set of areas, including health, child development and human capital, is captured through the recent launch of the Deaton Review on the causes and consequences of inequality, covering a broad set of inequalities and the challenges they bring to society, to policy and to research. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
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68. Study of Neighborhood Search-Based Fractal Image Encoding
- Author
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Indu Aggarwal, Richa Gupta, Kacprzyk, Janusz, Series editor, Pant, Millie, editor, Deep, Kusum, editor, Bansal, Jagdish Chand, editor, Nagar, Atulya, editor, and Das, Kedar Nath, editor
- Published
- 2016
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69. CindyGL: Authoring GPU-Based Interactive Mathematical Content
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Montag, Aaron, Richter-Gebert, Jürgen, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Greuel, Gert-Martin, editor, Koch, Thorsten, editor, Paule, Peter, editor, and Sommese, Andrew, editor
- Published
- 2016
- Full Text
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70. A New Approach to Find the Multi-Fractal Dimension of Multi-Fuzzy Fractal Attractor Sets Based on the Iterated Function System.
- Author
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Mohammed, Arkan Jassim
- Subjects
- *
FRACTALS , *FRACTAL dimensions , *ITERATIVE methods (Mathematics) , *METRIC spaces , *FRACTAL analysis , *GENERALIZATION - Abstract
In nature, objects are not single fractal sets but are a collection of complex multiple fractals that characterise the multi-fractal space, a generalisation of fractal space. While fractal space includes a fractal set, a multi-fractal space includes the union of fractals. A fuzzy fractal space is a fuzzy metric space and is an approach for the construction, analysis, and approximation of sets and images that exhibit fractal characteristics. The finite Cartesian product of fuzzy fractal spaces is called the multi-fuzzy fractal space. We propose in this paper, a theoretical proof to define the multi-fractal dimensions FD of a multi-fuzzy fractal attractor of n objects for the self-similar fractals sets A=∏ni=1Ai=(A1,A2,…An) of the contraction mapping W**:∏ni=1H(F(Xi)→∏ni=1H(F(Xi)) with contractivity factor r = max{ri, i = 1, 2,…n} where H(F(Xi) is a fuzzy fractal space for each i = 1, 2,=, n; over a complete metric space (∏ni=1H(F(Xi)),D∗) then for all Bi that belong toH(F(Xi)), there exists B* belonging to (∏ni=1H(F(Xi))) such that W**(B∗=∏ni=1Bi)=∏ni=1(∪nj=1∪k(i,j)k=1ω*kij(Bj)=∏ni=1Wi(B∗)). By supposing that M(t)=(∑k(r*kij)FD)n×n is the matrix associated with the the contraction mapping ω*kij with contraction factor r*kij, ∀i, j=1, 2,…, n, ∀k=1, 2, …, k(i, j), for all t≥0, and h (t)=det(M (t)-I). Then, we prove that if there exists a FD such that; h(FD)=0, then FD is the multi fractal dimension for the multi fuzzy-fractal sets of IFS; and M(FD) has a fixed point in Rn. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
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71. The long-term impact of the integrated crop-livestock system on carbon emission, sustainability and livelihood security of small and medium farmers
- Author
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O, Kumara, A. H., Kumar Naik, L., Rajashekhar, Goudra, Shivanand, O, Kumara, A. H., Kumar Naik, L., Rajashekhar, and Goudra, Shivanand
- Abstract
In India, 80 per cent of the farmers are small and marginal farmers. They primarily depend on agriculture and allied activities for their livelihood security. The rice-rice cropping system reduces farm income, declined soil fertility and other soil degradation problems. The farming system approach is a holistic tool to address the problems of mono-cropping through diversification that enhances farm income, production and employment. A field study was conducted during 2011–2018 to study the impact of the rice-based integrated crop-livestock system (ICLS) for profitability, carbon emission and sustainability. Recycling of resources and residues led to higher productivity (58.9 %) and net profit (48.5 %) over the initial year by adopting rice-based ICLS. This system had a net profit of $ 3097/year and generated 776 man T days/ha/year employments. In ICLS, the recyclable farm waste material of 28.98 tons is converted into organic manures of 16.03 tons and saves the fertilizer’s cost of $ 504 per year. It can be a sustainable model with a sustainable yield index (0.11) of for wet situations with less carbon-emitting and profitable.
- Published
- 2023
72. Improving the Representation of Whitecap Fraction and Sea Salt Aerosol Emissions in the ECMWF IFS-AER
- Author
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Samuel Rémy and Magdalena D. Anguelova
- Subjects
aerosol ,sea spray aerosol ,remote sensing ,whitecap fraction ,CAMS ,IFS ,Science - Abstract
The European Centre for Medium-Range Weather Forecasts (ECMWF) operates the Integrated Forecasting System aerosol module (IFS-AER) to provide daily global analysis and forecast of aerosols for the Copernicus Atmosphere Monitoring Service (CAMS). New estimates of sea salt aerosol emissions have been implemented in the IFS-AER using a new parameterization of whitecap fraction as a function of wind speed and sea surface temperature. The effect of whitecap fraction simulated by old and new parameterizations has been evaluated by comparing the IFS-AER new sea salt aerosol characteristics to those of aerosol retrievals. The new parameterization brought a significant improvement as compared to the two parameterizations of sea salt aerosol emissions previously implemented in the IFS-AER. Likewise, the simulated sea salt aerosol optical depth and surface concentration are significantly improved, as compared against ground and remote sensing products.
- Published
- 2021
- Full Text
- View/download PDF
73. Combining Regional Energy and Intuitionistic Fuzzy Sets for Infrared and Visible Image Fusion
- Author
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Xiaoxue Xing, Cong Luo, Jian Zhou, Minghan Yan, Cheng Liu, and Tingfa Xu
- Subjects
infrared and visible images ,images fusion ,RE ,IFS ,NSST ,Chemical technology ,TP1-1185 - Abstract
To get more obvious target information and more texture features, a new fusion method for the infrared (IR) and visible (VIS) images combining regional energy (RE) and intuitionistic fuzzy sets (IFS) is proposed, and this method can be described by several steps as follows. Firstly, the IR and VIS images are decomposed into low- and high-frequency sub-bands by non-subsampled shearlet transform (NSST). Secondly, RE-based fusion rule is used to obtain the low-frequency pre-fusion image, which allows the important target information preserved in the resulting image. Based on the pre-fusion image, the IFS-based fusion rule is introduced to achieve the final low-frequency image, which enables more important texture information transferred to the resulting image. Thirdly, the ‘max-absolute’ fusion rule is adopted to fuse high-frequency sub-bands. Finally, the fused image is reconstructed by inverse NSST. The TNO and RoadScene datasets are used to evaluate the proposed method. The simulation results demonstrate that the fused images of the proposed method have more obvious targets, higher contrast, more plentiful detailed information, and local features. Qualitative and quantitative analysis results show that the presented method is superior to the other nine advanced fusion methods.
- Published
- 2021
- Full Text
- View/download PDF
74. A Novel Technique For Human Face Recognition Using Fractal Code and Bi-dimensional Subspace
- Author
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Mohamed, Benouis, Kamel, Benkkadour Mohamed, Redwan, Tlmesani, Mohamed, Senouci, Rannenberg, Kai, Editor-in-chief, Sakarovitch, Jacques, Series editor, Goedicke, Michael, Series editor, Tatnall, Arthur, Series editor, Neuhold, Erich J., Series editor, Pras, Aiko, Series editor, Tröltzsch, Fredi, Series editor, Pries-Heje, Jan, Series editor, Whitehouse, Diane, Series editor, Reis, Ricardo, Series editor, Murayama, Yuko, Series editor, Dillon, Tharam, Series editor, Gulliksen, Jan, Series editor, Rauterberg, Matthias, Series editor, Amine, Abdelmalek, editor, Bellatreche, Ladjel, editor, Elberrichi, Zakaria, editor, and Wrembel, Robert, editor
- Published
- 2015
- Full Text
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75. Fractal Image Compression with Adaptive Quadtree Partitioning and Lossless Encoding on the Parameters of Affine Transformations
- Author
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Nandi, Utpal, Mandal, Jyotsna Kumar, Kacprzyk, Janusz, Series editor, Mandal, J. K., editor, Satapathy, Suresh Chandra, editor, Kumar Sanyal, Manas, editor, Sarkar, Partha Pratim, editor, and Mukhopadhyay, Anirban, editor
- Published
- 2015
- Full Text
- View/download PDF
76. Uncertain database retrieval with measure – Based belief function attribute values under intuitionistic fuzzy set.
- Author
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Xue, Yige, Deng, Yong, and Garg, Harish
- Subjects
- *
FUZZY sets , *ALGORITHMS , *DATABASES , *MULTIPLE criteria decision making , *GROUP decision making - Abstract
The uncertain database retrieval with measure-based belief function attribute values can resolve concerns of database retrieval and decision making, particularly in the circumstances of classical fuzzy set, which has an assuring perspective. However, how to implement the design to explore the things based on the intuitionistic fuzzy set (IFS) in an ambiguous database is yet an open problem. This paper addresses the issues of database retrieval based on the uncertain database with the things related to IFS. In the design, a query associated with each attribute of the objects is located in terms of IFS. Based on the gathered data, the "plausibilities (Pl)" and "beliefs (Bel)" measures are measured for each attribute and then aggregated with the cooperation of the Choquet integral (CI) operator. The "satisfaction degree" of the query in the form of an interval is circumscribed as [Bel, Pl]. The defuzzified value of this interval is affirmed with the aid of golden rule representative value, to link these satisfaction degrees. Hence, the appearance of the stated algorithm is more trustworthy than the others under an unpredictable environment. The description of the asserted algorithm is illustrated with an application correlated to the library database. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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- View/download PDF
77. FORMAÇÃO CONTINUADA DOS PROFESSORES (DE ENSINO BÁSICO, TÉCNICO E TECNOLÓGICO) DO INSTITUTO FEDERAL CATARINENSE CAMPUS RIO DE SUL UM ESTUDO A PARTIR DAS VOZES DOS EDUCADORES
- Author
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Andressa Graziele Brandt and Cristiana de Azevedo Tramonte
- Subjects
formação continuada ,formação de professores ,IFs ,Education (General) ,L7-991 ,Theory and practice of education ,LB5-3640 - Abstract
A pesquisa tem como objetivo investigar e compreender como o Programa de Formação e Capacitação Continuada contribuiu para a formação e desenvolvimento profissional dos professores do Ensino Básico, Técnico e Tecnológico do IF Catarinense – campus Rio do Sul. Tendo como problema central: Qual a relação existente entre o Programa de Formação Continuada de Professores e as mudanças na prática docente e no desenvolvimento profissional do professor de Ensino Básico, Técnico e Tecnológico? O percurso metodológico de caráter qualitativo baseou-se na aproximação dos autores que fundamentam o problema em questão e em um levantamento das produções no banco de dados de trabalhos de teses e dissertações nas IES pertencentes ao estado de Santa Catarina, com pós-graduação stricto sensu em Educação. Do ponto de vista empírico, a pesquisa pretende contribuir para o aprimoramento do Programa em questão, especificamente, na formação pedagógica dos professores e teórico-metodológica na concepção da Educação Básica, Técnica e Tecnológica.
- Published
- 2019
78. NEventSpaces and NeuronX: A Framework for Modeling Neural Events and Structures
- Author
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Dr Bheemaiah Anil K Kumar
- Subjects
Feynman Diagrams ,Event Calculus ,Event Driven calculus ,IFS ,OOPS ,NeuronX ,L System - Abstract
NEventSpaces and NeuronX are two frameworks that provide a powerful tool for modeling neural events and structures. In this paper, we present an overview of these frameworks, their formal specifications, and their applications in two examples: a Mimosa Pudica hair and peduncle model and a neural filter for detecting dendritic branch point failure. We discuss the potential of these frameworks for investigating the mechanisms of neural development, plasticity, and function, and for developing innovative applications in neuroscience and beyond.
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- 2023
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79. Continuous Groupoids on the Symbolic Space, Quasi-Invariant Probabilities for Haar Systems and the Haar–Ruelle Operator.
- Author
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Lopes, Artur O. and Oliveira, Elismar R.
- Subjects
- *
GROUPOIDS , *PROBABILITY theory , *VON Neumann algebras , *HOLDER spaces , *COCYCLES - Abstract
We consider groupoids on { 1 , 2 , ... , d } N , cocycles and the counting measure as transverse function. We generalize results relating quasi-invariant probabilities with eigenprobabilities for the dual of the Ruelle operator. We assume a mild compatibility of the groupoid with the symbolic structure. We present a generalization of the Ruelle operator—the Haar–Ruelle operator—taking into account the Haar structure. We consider continuous and also Hölder cocycles. IFS with weights appears in our reasoning in the Hölder case. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
80. On the Design of a Novel Fractal Antenna for Spectrum Sensing in Cognitive Radio.
- Author
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Aggarwal, Monika and Pharwaha, Amar Partap Singh
- Subjects
- *
COGNITIVE radio , *ANTENNAS (Electronics) , *MICROSTRIP antennas - Abstract
The present paper reports on the development of a novel compact fractal microstrip patch antenna for spectrum sensing in cognitive radio. The geometrical design of the proposed fractal antenna is optimized using nature inspired Moth Flame Optimization (MFO) method. The optimized antenna is having broadband characteristic within two bands (6.206 - 7.864 GHz, 23.56%) and (14.95 - 20 GHz, 28.89%), which are specified for IEEE C-band, Ku-band and K-band applications respectively. The proposed fractal antenna is also having high peak gain of 7.26 dBi at 18.04 GHz and omnidirectional radiation pattern at all frequencies. The performance of the proposed antenna is also validated experimentally by having a comparison of simulated results with the measured results. The proposed design offers 45.54% reduction in antenna physical size (copper required) as compare to a rectangular patch antenna of same size. [ABSTRACT FROM AUTHOR]
- Published
- 2019
81. Quantifying the role of individual diabatic processes for the formation of PV anomalies in a North Pacific cyclone.
- Author
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Attinger, Roman, Spreitzer, Elisa, Boettcher, Maxi, Forbes, Richard, Wernli, Heini, and Joos, Hanna
- Subjects
- *
FRONTS (Meteorology) , *WEATHER forecasting , *CYCLONES , *TURBULENT mixing , *SNOWMELT , *NUMERICAL weather forecasting , *BOUNDARY layer (Aerodynamics) - Abstract
Processes that do not conserve potential vorticity (PV) have a profound impact on the intensity, evolution, and mesoscale details of extratropical weather systems. This study aims at quantifying and improving the understanding of how and when physical processes modify PV in cyclones. To this end, a 6‐day forecast of a North Pacific cyclone is performed using a recent operational version of the ECMWF global numerical weather prediction model. Hourly instantaneous temperature and momentum tendencies of each parametrized process are used to compute the corresponding PV tendencies. By integrating these diabatic PV rates along backward trajectories, the relative contribution of individual processes for the PV budget can be assessed. The cold front is characterized by an elongated filament of increased PV, generated by latent heating due to condensation at the front as well as long‐wave radiative cooling at the surface. Turbulent mixing at the interface of the boundary layer decreases PV behind the cold front during the early stage of the cyclone, while sublimation of snow produces negative PV in the mature phase. A broad region of enhanced PV is found along the warm front, generated by condensation and turbulence at the front as well as long‐wave radiative cooling at the surface. The region of decreased PV north of the warm front is mainly modified by snow melting and sublimation. Finally, high values of PV along the bent‐back front and the cyclone centre are generated by condensation, convection, snow melting and sublimation. In general, turbulent mixing offsets intense PV modification induced by the other processes. This study highlights the relevance of condensation, melting and sublimation of snow, long‐wave radiative cooling, turbulence, and convection for the production of low‐level PV anomalies and underlines the importance of correctly representing these processes in weather prediction models. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
82. Attracting and Retaining Youth in Agriculture (ARYA) and its Components : A Review.
- Author
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MURTHY, K. N. KALYANA, ANANDA, M. R., KUMAR, H. D. SHIVA, and REHMAN, H. M. ATHEEKUR
- Subjects
YOUTH ,RURAL development ,AGE groups ,AGRICULTURE & the environment - Abstract
Youth are the most potent segment of the population of a country. They are the hopes of tomorrow and the backbone of rural community. Youth possess dynamic energies, creative activities and adventurous spirit by virtue of their age and enthusiasm. India is a land of youth and constitutes a numerically dominant, resourceful and also adventurous segment of the population. At present, 35 per cent of the total population is in the age group of 15-35 years, out of which 75 per cent of them live in rural areas. The migration of rural youth to the cities is around 45 per cent, which is quite alarming. The major reasons for youth moving to urban center include: lack of basic amenities, unemployment and lack of interest in farming since agriculture suffers from several factors such as natural disasters (drought, storms, etc.), smaller land holdings (that are unable to compete against more commercialized agriculture of larger holdings) and not getting suitable market price for agriculture produce. The future of agriculture depends on the contribution of youth. In this context, to prevent the exodus of farmer and rural people to cities and towns, the ICAR has recently designed four programs namely, Farmer First, Student READY, Mera Gaon Mera Gaurav and ARYA. Realizing the importance of rural youth in agricultural development especially from the point of view of food security of the country, ICAR has initiated a programme on 'Attracting and Retaining Youth in Agriculture'. ARYA project is being implemented in 25 States through KVKs selecting one district from each State. The Purpose of ARYA is to establish economic models for youth in the villages so that youths get attracted in agriculture and overall rural situation improves. If agriculture is the backbone of economy, agronomists are the backbone of agriculture, since they deal with wider aspects of the farm. Sustainability and productivity of the farm depends upon practicing of integrated approaches like dairy, poultry, goat/sheep, apiculture, piggery, mushroom production, etc., in addition to the crop component. Agronomist can become the mentor of the rural youth and retain them on the farm by educating to practice integrated farming system approaches. [ABSTRACT FROM AUTHOR]
- Published
- 2019
83. Introducing a new method for the fusion of fraud evidence in banking transactions with regards to uncertainty.
- Author
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Eshghi, Abdollah and Kargari, Mehrdad
- Subjects
- *
FRAUD investigation , *UNCERTAINTY , *MULTIPLE criteria decision making , *DEMPSTER-Shafer theory , *FINANCIAL institutions - Abstract
Highlights • Using several evidence for determining the state of a transaction (fraud or not fraud). • Declaring the problem of uncertainty in fraud detection. • Using Multi Criteria Decision Making method and intuitionistic fuzzy method for the fusion of fraud evidence. • Getting better results compared with Dempster–Shafer fusion method. Abstract Detection of fraudulent transactions is a vital factor for financial institutions, and finding more effective and accurate methods is of tremendous importance. The use of supervised data mining techniques is not feasible in many cases due to the lack of access to labeled data. Fraud detection is a complex task, and unsupervised methods like clustering and outlier detection techniques employed alone do not yield satisfactory results. Another issue is epistemic uncertainty due to the absence of sufficient information on the behavioral aspects of different customers, which also leads to poorer results for fraud detection and makes the fraud detection system inapplicable in real world environment. In this paper, using multi criteria decision method, intuitionistic fuzzy set, and evidential reasoning, a new method for detection of fraud was introduced, which infuses several behavioral evidence of a transaction concerning the effect of uncertainty for them. Transactional behavior was modeled by considering the trends of different main and aggregated variables at different periods and the extent of deviation of the new arrived transaction from each of these trends were considered as behavioral evidence. The final belief, which is the result of the combination of much evidence using the proposed method, will determine the originality of a newly arrived transaction. Finally, using a real world dataset, the results of the new method were compared with the results of Dempster–Shafer method in terms of the number of frauds discovered and the number of erroneous alerts they issued. The findings showed that the method introduced in this study has higher accuracy and lower false alarms compared to Dempster–Shafer method while the computational complexity of this method makes its implementation time longer. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
84. Assessing the scales in numerical weather and climate predictions: will exascale be the rescue?
- Author
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Neumann, Philipp, Düben, Peter, Adamidis, Panagiotis, Bauer, Peter, Brück, Matthias, Kornblueh, Luis, Klocke, Daniel, Stevens, Bjorn, Wedi, Nils, and Biercamp, Joachim
- Subjects
- *
GRAVITY waves , *BOUNDARY layer (Aerodynamics) , *MULTISCALE modeling , *DATA analysis - Abstract
We discuss scientific features and computational performance of kilometre-scale global weather and climate simulations, considering the Icosahedral Non-hydrostatic (ICON) model and the Integrated Forecast System (IFS). Scalability measurements and a performance modelling approach are used to derive performance estimates for these models on upcoming exascale supercomputers. This is complemented by preliminary analyses of the model data that illustrate the importance of high-resolution models to gain improvements in the accuracy of convective processes, a better understanding of physics dynamics interactions and poorly resolved or parametrized processes, such as gravity waves, convection and boundary layer. This article is part of the theme issue 'Multiscale modelling, simulation and computing: from the desktop to the exascale'. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
85. Spherical fuzzy sets and spherical fuzzy TOPSIS method.
- Author
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Kutlu Gündoğdu, Fatma and Kahraman, Cengiz
- Subjects
- *
FUZZY sets , *FUZZY systems , *INTUITIONISTIC mathematics , *FUZZY logic , *MULTIPLE criteria decision making - Abstract
All the extensions of ordinary fuzzy sets with three dimensional membership functions such as intuitionistic fuzzy sets (IFS), intuitionistic fuzzy sets of second type (IFS2), and neutrosophic fuzzy sets (NFS) aim at defining the judgments of decision makers/ experts with a more detailed description. Introduction of generalized three dimensional spherical fuzzy sets (SFS) including some essential differences from the other fuzzy sets is presented in this paper. The new type of fuzzy sets is based on the spherical fuzzy distances which have been already defined in the literature. Arithmetic operations involving addition, subtraction and multiplication are presented together with their proofs. Aggregation operators, score and accuracy functions are developed. The multi-criteria decision making method TOPSIS is extended to spherical fuzzy TOPSIS and an illustrative example is presented. Additionally, a comparative analysis with intuitionistic fuzzy TOPSIS (IF-TOPSIS) is given. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
86. STANDARDIZATION IN CATERING FACILITIES WORKING WITH FOOD IN THE REPUBLIC OF MACEDONIA.
- Author
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Lozanoska, Daniela Koteska and Rechkoska, Gordana
- Subjects
- *
CATERING services , *FOOD quality , *STANDARDIZATION - Abstract
The use and preparation of food in catering facilities is a whole science. However, over the years there has imposes a need for existing guaranteed quality of food products, which will give to users confidence in the use of these products. This is achieved by introducing of certain standards. In this paper we will address the need and significance of different standards in catering facilities. Namely, the ISO 9001, HACCP, HALAL and FIS standard will be elaborated as commonly represented, widely accepted and internationally recognized. For this purpose, we will also meet the conditions necessary for the application of these standards, which during the process of preparation of the food should be satisfied, and at the same time will meet the requirements of the gests regarding to the quality of the food. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
87. An Ifs-Ivifs-Dematel Method to Identify Critical Success Factors of Cross-Department Coordination of Emergency Management
- Author
-
Weijian Jin and Yajing Zhang
- Subjects
Renewable Energy, Sustainability and the Environment ,Geography, Planning and Development ,emergency management ,cross-department collaboration ,IFS ,IVIFS ,DEMATEL ,Building and Construction ,Management, Monitoring, Policy and Law - Abstract
Cross-Department Coordination of Emergency Management (CDCEM) is considered a critical dimension in China to solve the problem of emergency management. The Decision Experiment and Decision-Making Trial and Evaluation Laboratory (DEMATEL) is a method used to build the structural correlation of criteria in uncertain environments to identify critical success factors (CSFs). There are coupling correlations and one-way correlations for interrelationship comparisons between selected factors of CDCEM. Therefore, there are two different assessment scales. However, most previous studies applied the DEMATEL method with a single assessment scale to identify CSFs. To fill this gap, an IFS-IVIFS-DEMATEL method is provided to comprehensively identify the CSFs of CDCEM in this study. The intuitionistic fuzzy set (IFS) is regarded as the assessment scales of coupling correlation, and the interval-valued intuitionistic fuzzy set (IFIVS) is regarded as the assessment scales of one-way correlation. The two different types of assessment scales were transformed into interval information in the improved approach. Then, using the conduction correlation among factors, a comprehensive correlation matrix was constructed. After that, the ranking of the central degree and cause degree of the factors according to the traditional DEMATEL method was obtained. Finally, a case study of Nanjing’s CDCEM was illustrated to demonstrate that the proposed method is more suitable and reasonable. It is found that the factors of “cross-department organization”, “cross-department information communication and transmission”, “information sharing technology platform”, “cross-department material supply capability”, and “cross-department prediction and early warning” in Nanjing are CSFs in CDCEM, which should be emphasized to strengthen CDCEM. The findings of this study shed light on the cross-department coordination of emergency management mechanisms in uncertain situations, which would be beneficial for improving the efficiency of governmental management.
- Published
- 2023
88. A Novel Fractal Patch Antenna Using Defected Ground Structure (DGS) with High Isolation for 5G Applications
- Author
-
Es-saleh, A., Bendaoued, M., Lakrit, S., Das, S., Atounti, M., and Faize, A.
- Subjects
fractal ,DGS ,патч-антена ,ізоляція ,IFS ,patch antenna ,isolation ,5G - Abstract
У цьому документі представлено нову компактну фрактальну монопольну патч-антену круглої форми (FMPA) з дефектною структурою землі (DGS). Запропонована фрактальна геометрія була створена за допомогою системи ітерованих функцій (IFS). Основною метою включення цієї фрактальної геометрії є досягнення мініатюризації та широкосмугової продуктивності. Повна геометрія встановленого FMPA для додатків 5G побудована шляхом включення фракталів із квадратом і зіркою з восьми сегментів; у кожному сегменті створюємо квадрат з поворотом на 45° від одного сегмента до іншого. Розмір запропонованої фрактальної геометрії становить 14 × 6 мм2. Нижня площина антени складається з пошкоджених структур землі (DGS) для отримання кращої ізоляції та мініатюризації. Запропонована структура забезпечує хороші показники продуктивності, такі як посилення та коефіцієнт відбиття. У цій роботі використовується підкладка Rogers RO4003C, яка має діелектричну проникність 3,55, висоту 0,2 мм і тангенс втрати 0,025. Для оцінки цієї антени використовується Технологія комп’ютерного моделювання – мікрохвильова студія (CST). Запропонована антена працює на частоті 26 ГГц із смугою пропускання опору 0,357 ГГц разом із максимальним коефіцієнтом відбиття – 24,426 дБ. Зазначена антена досягає пікового посилення 3,83 дБ, максимальної ефективності випромінювання 95,78% і бажаної діаграми спрямованості завдяки збереженню її компактного розміру. This paper presents a novel compact circular shaped fractal monopole patch antenna (FMPA) with defected ground structure (DGS). The suggested fractal geometry has been created by using an iterated function system (IFS). The primary aim behind the inclusion of this fractal geometry is used to achieve miniaturization and wideband performance. The complete geometry of the prescribed FMPA for 5G applications is constructed by incorporating fractals with square and star with eight segments; in each segment we create a square with a rotation of 45° from one segment to another. The dimension of proposed fractal geometry is 14 x 6 mm2. The bottom plane of the antenna consists of defected ground structures (DGS) to acquire better isolation and miniaturization. The proposed structure provides a good performance metrics such as gain, and reflection coefficient. The substrate used in this work is Rogers RO4003C, which has a dielectric constant of 3.55, a high of 0.2 mm, and loss tangent of 0.025. Computer Simulation Technology-Microwave Studio (CST) is used to evaluate this antenna. The suggested antenna operates at 26 GHz with an impedance bandwidth of 0.357 GHz along with maximum reflection coefficient of – 24.426 dB. The prescribed antenna attains a peak gain of 3.83 dB, maximum radiation efficiency of 95.78 % and desired radiation patterns by maintaining its compact size.
- Published
- 2023
89. Evaluation of a Microwave Emissivity Module for Snow Covered Area with CMEM in the ECMWF Integrated Forecasting System
- Author
-
Yoichi Hirahara, Patricia de Rosnay, and Gabriele Arduini
- Subjects
CMEM ,IFS ,RTTOV ,HUT ,H-TESSEL ,multi-layer snowpack ,Science - Abstract
The Community Microwave Emission Modelling platform (CMEM) has been developed by the European Centre for Medium-Range Weather Forecasts (ECMWF) as the forward operator radiative transfer model for low frequency passive microwave brightness temperatures (TB). It is used at ECMWF for L-band TB monitoring over snow free areas. In this paper, upgrades to CMEM are presented in order to explore forward modelling in snow-covered areas for coupled land-atmosphere numerical weather prediction systems. The upgrades enable to use CMEM on an extended range of frequencies and the Helsinki University of Technology multi-layer snow emission model is implemented. Offline CMEM experiments are evaluated against AMSR2 (Advanced Microwave Scanning Radiometer 2) observations showing that simulated TB is improved when using a multi-layer snow scheme, compared to a single-layer scheme. The improvements mainly result from a better representation of snow characteristics in the multi-layer snowpack model. CMEM is also evaluated in the Integrated Forecasting System and coupled to RTTOV (Radiative Transfer for TOVS). The numerical results show improved simulated TB at low frequency V polarization over snow-covered area compared to a configuration using emissivity atlas. Degradations at frequencies higher than 20 GHz indicate that further improvements are required in the emissivity and snowpack properties modelling.
- Published
- 2020
- Full Text
- View/download PDF
90. Preparing Scientific Application Software for Exascale Computing
- Author
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Åström, J. A., Carter, A., Hetherington, J., Ioakimidis, K., Lindahl, E., Mozdzynski, G., Nash, R. W., Schlatter, P., Signell, A., Westerholm, J., Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Manninen, Pekka, editor, and Öster, Per, editor
- Published
- 2013
- Full Text
- View/download PDF
91. An Improved Approach for Supplier Selection in Project Material Bidding Procurement
- Author
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Xu, Maozeng, Chen, Qiaoyu, Cui, Ligang, and Wu, Desheng Dash, editor
- Published
- 2011
- Full Text
- View/download PDF
92. Propagating and Aggregating Trust with Uncertainty Measure
- Author
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Stachowiak, Anna, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Goebel, Randy, editor, Siekmann, Jörg, editor, Wahlster, Wolfgang, editor, Jędrzejowicz, Piotr, editor, Nguyen, Ngoc Thanh, editor, and Hoang, Kiem, editor
- Published
- 2011
- Full Text
- View/download PDF
93. Color Image Compression Using Fast VQ with DCT Based Block Indexing Method
- Author
-
George, Loay E., Kadim, Azhar M., Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Kamel, Mohamed, editor, and Campilho, Aurélio, editor
- Published
- 2011
- Full Text
- View/download PDF
94. Variasi Motif Batik Palembang Menggunakan Sistem Fungsi Teriterasi dan Himpunan Julia
- Author
-
Eka Susanti
- Subjects
Iterated Function Systems ,IFS ,Julia Set ,Carpet Sierpinski ,Mathematics ,QA1-939 - Abstract
Batik Palembang has a distinctive design with bright colour. There are several design, in this research, can be visualized songket batik design and jumputan batik design. Jumputan and songket batik design with the help of the software can be visualized using iterated function systems (IFS) and the Julia set. Songket batik design can be visualized with a combination of Sierpinski Carpet and Julia set while jumputan battik design can be visualized with a combination of some of the Julia set.
- Published
- 2015
- Full Text
- View/download PDF
95. Relatório de estágio na Panicongelados - massas congeladas, SA
- Author
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Campanário, Marta Francisco da Silva and Ganhão, Rui Manuel Maneta
- Subjects
Rotulagem ,IFS ,Engenharia e Tecnologia::Outras Engenharias e Tecnologias [Domínio/Área Científica] ,Etiqueta ,Fichas técnicas ,Panicongelados - Abstract
O presente relatório enquadra-se nos requisitos para a obtenção do grau de Mestre em Gestão da Qualidade e Segurança Alimentar pela Escola Superior de Turismo e Tecnologia do Mar do Politécnico de Leiria, e tem como objetivo descrever as tarefas realizadas ao longo do estágio. Este decorreu entre setembro de 2021 e julho de 2022, na empresa Panicongelados – Massas Congeladas, S.A, uma indústria de produtos de pastelaria e padaria ultracongelada, concretizando um total de 1620 horas de trabalho. O desenvolvimento do estágio esteve diretamente ligado aos objetivos definidos no plano de trabalho, desde a revisão da documentação técnica (fichas técnicas e rotulagem), conhecimento dos requisitos da norma International Featured Standards Food 7.0, domínio do software Flow e acompanhamento de auditorias internas e externas. Integrado no departamento da documentação técnica, ao longo do estágio, foram revistas e criadas inúmeras fichas técnicas e respetivas etiquetas/rótulos dos produtos criados e comercializados pela Panicongelados. Foi ainda possível contactar com diferentes programas informáticos de apoio ao departamento da Qualidade como o Flow e o Zebra. Desta forma todas as tarefas programadas foram bem-sucedidas, contribuindo para o bom funcionamento e êxito da empresa. Ao longo do estágio para além da aquisição de conhecimentos inerentes às funções acima, destacam-se o desenvolvimento de conhecimentos de caráter mais comportamental assim como conhecimentos referentes à indústria de produtos de padaria e pastelaria ultracongelados. This report is part of the requirements for obtaining the degree of Master in Food Quality and Safety Management by the Escola Superior de Turismo e Tecnologia do Mar of Leiria Polytechnic, and aims to describe the work done during the internship. This internship took place between September 2021 and July 2022, in the company Panicongelados – Frozen Pasta, S.A., a frozen pastry and bakery products industry, making a total of 1620 hours of work. The development of the internship was directly linked to the objectives defined in the work plan, from the revision of the technical documentation (technical sheets and labelling), knowledge of the requirements of the International Featured Standards Food 7.0, knowledge of the Flow software and follow-up of internal and external audits. Integrated in the technical documentation department, throughout the internship, numerous technical sheets and respective labels of the products created by Panicongelados were reviewed and created. It was possible to contact with different software programs to support the Quality department, such as Flow and Zebra. In this way all the work plan were successful, contributing to the good functioning and success of the company. Throughout the internship, in addition to the acquisition of knowledge inherent to the functions above, the development of knowledge of a more behavioural nature stands out, as well as knowledge regarding the frozen bakery products industry.
- Published
- 2022
96. Sistemas de Gestão da Segurança Alimentar: Estudo comparativo entre os referenciais NP EN ISO 22000:2018, BRC Food e IFS Food
- Author
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Duarte, Mariana Isabel Mendes, Lidon, Fernando, Almeida, Vitória, and Silva, Maria Manuela
- Subjects
Segurança Alimentar ,Códex Alimentarius ,IFS ,Engenharia e Tecnologia::Outras Engenharias e Tecnologias [Domínio/Área Científica] ,HACCP ,Qualidade ,BRC - Abstract
No âmbito do mestrado de Tecnologias de Produção e Transformação Agroindustrial, da Faculdade de Ciências e Tecnologias, da Universidade Nova de Lisboa esta dissertação assumiu como objetivo principal realizar um estudo comparativo entre três dos principais referenciais internacionais associados à qualidade e à segurança alimentar dos géneros alimentícios. Os três referenciais selecionados como alvos de estudo foram a International Featured Standards (IFS Food, v.7), a British Retail Consortium Global Standard for Food Safety (BRC Food, v.8) e a NP EN ISO 22000:2018. Através desta dissertação pretendeu-se também fornecer às indústrias agroalimentares um instrumento de consulta através do qual consigam obter esclarecimentos detalhados do conteúdo de cada uma das normas, desde aquilo que são os seus requisitos, os seus objetivos, os métodos de avaliação, entre outros exemplos. Numa fase prévia ao estudo comparativo das normas, efetuou-se um enquadramento daquilo que são as bases de cada uma delas, considerando uma contextualização do Códex Alimentarius, do sistema HACCP e, ainda das definições de qualidade e de segurança alimentar. Efetuou-se então uma descrição detalhada do conteúdo e da estrutura dos três referenciais, seguindo-se uma análise comparativa dos mesmos. Por forma a sustentar as conclusões desta análise comparativa foi também elaborado um questionário a uma empresa do setor vitivinícola, da zona de Leiria embora, por motivos de confidencialidade, o nome da organização não foi mencionado na dissertação. No âmbito deste estudo verificou-se que apesar de haver um conjunto de semelhanças entre os três referenciais, em especial nos requisitos que constituem cada um deles, a IFS Food e a BRC Food, em comparação com a ISO 22000:2018, são muito mais detalhadas em todo o seu conteúdo, enquanto a última é mais redundante nos seus requisitos e nos critérios dos mesmos. This dissertation was written within the scope of the master's degree in agro-industrial production and transformation technologies, of the Faculty of Sciences and Technologies, from the University Nova de Lisboa. The paper’s main objective was to carry out a comparative study between three of the main international standards associated with quality and safety of foodstuffs. The three benchmarks selected as study targets were the International Featured Standards (IFS Food, v.7), the British Retail Consortium Global Standard for Food Safety (BRC Food, v.8) and the NP EN ISO 22000:2018. This dissertation also intends to provide the agri-food industries with a consultation tool through which they can obtain detailed explanations of the standards above, and broaden the knowledge in what their requirements, objectives, and evaluation methods are, amongst other examples. Before carrying out the comparative study of the standards, a framework of their bases was created, through a contextualization of the Codex Alimentarius, the HACCP system and the definitions of quality and food safety. Then, a detailed description of the content and structure of the three frameworks was carried out, followed by their comparative analysis. To support the conclusions of the comparative study, a questionnaire was also prepared for a company in the wine sector, in the Leiria area, who’s name is not mentioned in the present study for confidentiality reasons. In this study, it was concluded that there is a set of similarities between the three standards, especially in the requirements that constitute them. However, IFS Food and BRC Food are much more detailed in all its content than ISO 22000:2018, that is more redundant in its requirements and criteria.
- Published
- 2022
97. Polish Adaptation and Psychometric Properties of the Long- and Short-Form Interfaith Spirituality Scale
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Janusz Surzykiewicz, Sebastian Binyamin Skalski, Małgorzata Niesiobędzka, Loren L. Toussaint, and Karol Konaszewski
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Male ,Psychometrics ,interfaith spirituality scale ,polish adaptation ,IFS ,spirituality scale ,Surveys and Questionnaires ,Health, Toxicology and Mutagenesis ,Public Health, Environmental and Occupational Health ,Humans ,Reproducibility of Results ,Female ,Spirituality ,Poland ,Spiritual Therapies - Abstract
Spirituality is widely believed to play an important role in securing health, and modern health care is increasingly being combined with spiritual care. This state of affairs is generating widespread interest in the construct from practitioners and researchers, resulting in the need to develop accurate and comprehensive measures of spirituality. The purpose of this study was to adapt the Polish version of the Interfaith Spirituality Scale (IFS), which consists of twenty-two statements, as well as its short version, including four statements. The IFS is not limited to any one religious denomination, making it possible to conduct research across diverse communities. The analyses were conducted on a sample of 642 Poles aged 18–68, 48% of whom were women. The Polish version of the scale showed high internal consistency (α = 0.96 for the IFS and α = 0.81 for the short version). Confirmatory factor analysis showed that the structure of the IFS consists of a unitary second-order factor with four first-order factors (direct connection with the creator, asceticism, meditation, and divine love). On the other hand, the structure of the short version is unifactorial. There were positive correlations of the IFS with another measure of spirituality, post-traumatic growth severity, mental well-being, and ecological behaviour, as well as negative correlations with post-traumatic stress disorder symptom severity and depressiveness; these confirmed the high validity of the tool. The results suggest that the IFS may be useful in the study of spirituality on Polish soil.
- Published
- 2022
- Full Text
- View/download PDF
98. Fractals and dynamical system
- Author
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Silva, Thiago Martins, Universidade Estadual Paulista (Unesp), and Rodrigues, Tatiana Miguel [UNESP]
- Subjects
Dimensão fractal ,IFS ,Dynamical system ,Fractal ,Fractal dimension ,Sistema dinâmico - Abstract
Submitted by Thiago Martins da Silva (thiago.martins-silva@unesp.br) on 2022-11-02T02:38:08Z No. of bitstreams: 1 Thiago_Martins.pdf: 3980221 bytes, checksum: a2dcf829632a46a31db7ee319b343deb (MD5) Approved for entry into archive by Renata Bianchui Prado (renata.bianchui@unesp.br) on 2022-11-03T16:59:18Z (GMT) No. of bitstreams: 1 silva_tm_me_prud.pdf: 3980221 bytes, checksum: a2dcf829632a46a31db7ee319b343deb (MD5) Made available in DSpace on 2022-11-03T16:59:18Z (GMT). No. of bitstreams: 1 silva_tm_me_prud.pdf: 3980221 bytes, checksum: a2dcf829632a46a31db7ee319b343deb (MD5) Previous issue date: 2022-09-02 Outra Fractais são estruturas matemáticas que surgiram para definir formas existentes na realidade e que a geometria clássica não é capaz de descrever, como nuvens e árvores, por exemplo. Estes, não são polígonos, objetos circulares ou nenhuma outra forma que se é conhecida, eles são algo a mais, um fractal, como denominou Mandelbrot. Porém, a teoria sobre essas formas diferentes não se resume a isso, há uma fundamentação matemática bem formalizada em Sistemas Dinâmicos que vai além da Geometria Fractal, suas aplicações são inúmeras e em diversas áreas. Assim, esta dissertação estuda a parte teórica de fractais a partir de Sistemas de Funções Iteradas para, no final, estudar algumas aplicações dessa teoria. Fractals are Mathematical Structures which arise to define forms that exist in reality and classical geometry was not capable of describing it, like clouds and trees, as an example. These are not polygons, circular objects, nor any other forms that are known, they are something else, a Fractal, as Mandelbrot denominated it. However, the theory about these forms is not restricted only to that, there is a Mathematical fundamentation well formalized in Dynamical Systems going beyond Fractal Geometry, their applications are countless and in many areas. Therefor, this dissertation study the theoretical part of fractals made by Iterated Function System to, in the final, study some applications of the theory.
- Published
- 2022
99. EFFECTIVENESS OF NAVAL INTRODUCTORY FLIGHT EVALUATION (NIFE)
- Author
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Lambert, Christopher T., Giles, Kathleen B., Semmens, Rob, West Point Military Academy, and Systems Engineering/Operations Research (SE/OR)
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attrition ,CNATRA ,Naval Introductory Flight Evaluation ,IFS ,Introductory Flight Screening ,Naval Aviation School Command ,flight training ,NIFE ,API ,primary ,Aviation Preflight Indoctrination ,NASC ,performance ,Chief of Naval Air Training ,naval aviation - Abstract
The naval aviation training pipeline was modified in 2020 so that the first training phase is now the Naval Introductory Flight Evaluation (NIFE). Designed to reduce attrition and improve performance in the next phase of flight training, Primary, NIFE replaces the previous initial training phases, Introductory Flight Screening and Aviation Pre-flight Indoctrination. This research conducts statistical analysis on data from over 4,500 students to assess NIFE’s effectiveness and verify whether it is reducing attrition and improving performance in Primary. The results indicate that NIFE largely accomplished its program goals. The Chief of Naval Air Training should retain NIFE in its current form. Further analyses into NIFE’s impacts should account for the potential training decay effects and time-varying confounding. Additionally, a future cost benefit analysis of NIFE will provide further context to the results of this study and help decision makers assess the value of the NIFE program. Ensign, United States Navy Approved for public release. Distribution is unlimited.
- Published
- 2022
100. IFS
- Author
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Schmidt-Erfurth, Ursula, editor and Kohnen, Thomas, editor
- Published
- 2018
- Full Text
- View/download PDF
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