El objetivo del presente trabajo es ilustrar cómo la aplicación adecuada o inadecuada del análisis factorial exploratorio (AFE) puede llevar a conclusiones muy diferentes. Para ello se evalúa el ...grado en que cuatro paquetes estadísticos diferentes que permiten realizar AFE de ítems, en concreto SPSS, FACTOR, PRELIS y MPlus, permiten o limitan la aplicación de los estándares actualmente recomendados en materia de análisis factorial. Asimismo se analizan y comparan los resultados que ofrecen dichos programas cuando se factorizan datos empíricos de escalas que ajustan, según el caso, de manera inadecuada, ambigua u óptima a los supuestos del modelo AFE lineal clásico, a través de las distintas posibilidades que ofrecen los distintos programas. Los resultados de la comparación ilustran las consecuencias de elegir entre un programa u otro, y también las consecuencias de elegir entre unas opciones u otras dentro de un mismo programa, en función de la naturaleza de los datos. Finalmente se ofrecen una serie de recomendaciones prácticas dirigidas a los investigadores aplicados con cierta orientación metodológica.
An introductory text designed to show readers how to try using syntax themselves and to then support them through its use. It is ideal for those who are experienced in using SPSS, but who are novices ...regarding syntax.
Walking is become a traditional mode of movement between places in many situations, irrespective of cities and countries. People walk with different purposes and activities. This calls for conducting ...the necessary studies and improvements for walking and crossing areas. The study aims to achieve several goals such as evaluate the impact of pedestrian characteristics, traffic flow in addition to walking speed on the efficiency of pedestrian (LOS) with the aided of statistical and traffic models to show the extended impact of variables and their effect on the efficiency of pedestrian traffic flow. To that purpose, the study chose Muhrmat Shat Al- Hilla Street within the urban area of Hilla city. Data collected for pedestrian walking and crossing according to field survey in order to estimate flow, average speed, density and spacing. The proposals adopted by the study, which were built on the basis of a traffic study and use of the simulation program (PTV VISSIM ), scientific analysis using (i) method with design of the crossing areas and sidewalks according to the (ii) specifecations as a result to an increase in the level of service for the sidewalks and crossing areas of the LOS (from F to C). Based on the statistical analysis using the SPSS software program, as well as studying the relationships between traffic volumes, speed and density of pedestrians.the linear equation reflected the relationship between speed and density. While the Second order equation reflected the relationship between traffic volumes and pedestrian speed based on the outputs of the values of the correlation coefficient (R), (Adj. R2) and (SE). The study suggested a comprehensive transportation for pedestrian flow charactristic in Hilla city includes pedestrians environmental within roadways and intersections as a networks to design an appropriate modern environment and safe crossing facilities to reduce traffic accidents that result in death, injury or disability.
With the generous grants of Social Science Research Council (SSRC), Planning Division, Ministry of Planning, Bangladesh a full time training workshop Long Course on Advanced Research Methodology and ...SPSS/STATA was started on 13 Oct-1 Dec, 2021 from 8 am - 4 pm for the Post graduate Medical Students of National Institute of Neurosciences & Hospital (NINS) at NINS auditorium. Programme was conducted by Bioethics Society (BBS). Mohammad Jainul Bari, Secretary, Planning Division, Ministry of Planning, Government of People Republic of Bangladesh was present at the Inauguration programme as Chief Guest. Prof Dr Mohammad Mostofa Zaman, Advisor Research & Publication and Focal Point, Gender, Equity & Rights, World Health Organization; MD Mosharraf Hossain, Additional Secretary, Planning Division, Ministry of Planning, Government of People Republic of Bangladesh; Kamruzzaman, Deputy Director, Social Science Research Council (SSRC), Ministry of Planning, Government of People Republic of Bangladesh were also present as Special Guest. Mr Sakhawat Hossain, Research Officer, SSRC, Ministry of Planning, Government of People Republic of Bangladesh was also present in the program. Prof. (Dr.) Quazi Deen Mohammed, Professor of Neurology & Director, National Institute of Neurosciences chaired the Opening ceremony as a local coordinator. Prof Dr Md Badrul Alam Mondal, Joint Director & Professor of Neurology, Institute of Neurosciences (NINS) CO-Chaired the session.
The aim of this study was to measure the illness cognition of patients with defect in the maxillofacial region. Eighty patients participated in this study. Written informed consent was obtained from ...patients with maxillofacial area defect, and the patients were filled in with the guidance of the researchers. Illness Cognition Questionnaire (ICQ), forms measuring the illness awareness of the patients were completed. The study was conducted independently of demographic characteristics. The statistical software SPSS (Statistical Package for Social Sciences, Version 20, Chicago IL, USA) was used for calculations. At the end of the study, ICQ scores in patients with maxillofacial defect were as follows: There was a statistically significant intra class correlation of 88.6% (0.843-0.942) among the Helplessness scale scores of the participants. There was a statistically significant intra class correlation of 80.3% (0.728-0.863) among the Acceptance scale scores of the participants. There was a statistically significant intra class correlation of 0.752 % (0,657-0,827) among the Perceived benefits scale scores of the participants. Patients with maxillofacial defects will focus on the disease cognition "Helplessness" category. In patients with relationship maxillofacial defect, the rate of helplessness (88.6%) was higher than acceptance (80.3%) and perceived benefit (0,752 %).
Nowadays, exploratory and confirmatory factor analyses are two important consecutive steps in an overall analysis process. The overall analysis should start with an exploratory factor analysis that ...explores the data and establishes a hypothesis for the factor model in the population. Then, the analysis process should be continued with a confirmatory factor analysis to assess whether the hypothesis proposed in the exploratory step is plausible in the population. To carry out the analysis, researchers usually collect a single sample, and then split it into two halves. As no specific splitting methods have been proposed to date in the context of factor analysis, researchers use a random split approach. In this paper we propose a method to split samples into equivalent subsamples similar to one that has already been proposed in the context of multivariate regression analysis. The method was tested in simulation studies and in real datasets.
This paper is concerned with the fuzzy-model-based nonfragile control problem for discrete-time nonlinear singularly perturbed systems with stochastic jumping parameters. The stochastic parameters ...are generated from the semi-Markov process. The memory property of the transition probabilities among subsystems is fully considered in the investigated systems. Consequently, the restriction that the transition probabilities are memoryless in widely used discrete-time Markov jump model can be removed. Based on the T-S fuzzy model approach and semi-Markov kernel concept, several criteria ensuring <inline-formula><tex-math notation="LaTeX">\delta</tex-math></inline-formula>-error mean square stability of the underlying closed-loop system are established. With the help of those criteria, the designed procedures which could well deal with the fragility problem in the implementation of the proposed fuzzy-model-based controller are presented. A technique is developed to estimate the permissible maximum value of singularly perturbed parameter for discrete-time nonlinear semi-Markov jump singularly perturbed systems. Finally, the validity of the established theoretical results is illustrated by a numerical example and a modified tunnel diode circuit model.
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