Pattern-Based Systems Engineering (PBSE) - Product lifecycle Management (PLM) integration and validation

Mass customization, small lot sizes, reduced cost, high variability of product types and changing product portfolio are characteristics of modern manufacturing systems during life cycle. A direct consequence of these characteristics is a more complex system and supply chain. Product lifecycle management (PLM) and model based system engineering (MBSE) are tools which have been proposed and implemented to address different aspects of this complexity and resulting challenges. Our previous work has successfully implemented a MBSE model into a PLM platform. More specifically, Pattern based system engineering (S* pattern) models of systems are integrated with TEAMCENTER to link and interface system level with component level, and streamline the lifecycle across disciplines. The benefit of the implementation is two folded. On one side it helps system engineers using system engineering models enable a shift from learning how to model to implementing the model, which leads to more effective systems definition, design, integration and testing. On the other side the PLM platform provides a reliable database to store legacy data for future use also track changes during the entire process, including one of the most important tools that a systems engineer needs which is an automatic report generation tool. In the current work, we have configured a PLM platform (TEAMCENTER) to support automatic generation of reports and requirements tables using a generic Oil Filter system lifecycle. There are three tables that have been configured for automatic generation which are Feature definitions table, Detail Requirements table and Stakeholder Feature Attributes table. These tables where specifically chosen as they describe all the requirements of the system and cover all physical behaviours the oil filter system shall exhibit during its physical interactions with external systems. The requirement tables represent core content for a typical systems engineering report. With the help of the automatic report generation tool, it is possible to prepare the entire report within one single system, the PLM system, to ensure a single reliable data source for an organization. Automatic generation of these contents can save the systems engineers time, avoid duplicated work and human errors in report preparation, train future generation of workforce in the lifecycle all the while encouraging standardized documents in an organization

An Improved Fatigue Detection System Based on Behavioral Characteristics of Driver

In recent years, road accidents have increased significantly. One of the major reasons for these accidents, as reported is driver fatigue. Due to continuous and longtime driving, the driver gets exhausted and drowsy which may lead to an accident. Therefore, there is a need for a system to measure the fatigue level of driver and alert him when he/she feels drowsy to avoid accidents. Thus, we propose a system which comprises of a camera installed on the car dashboard. The camera detect the driver's face and observe the alteration in its facial features and uses these features to observe the fatigue level. Facial features include eyes and mouth. Principle Component Analysis is thus implemented to reduce the features while minimizing the amount of information lost. The parameters thus obtained are processed through Support Vector Classifier for classifying the fatigue level. After that classifier output is sent to the alert unit.Comment: 4 pages, 2 figures, edited version of published paper in IEEE ICITE 201

Occupational Health Hazards among Workers in Garment Factories in Bangladesh: A Cross-Sectional Study

Introduction: Garment workers constitute a lion share of the total labour force in Bangladesh, which bring most of the country’s foreign currency. The competitiveness of the garment industry in the world market is seriously affected by the ill health of the workers, since ill health decreases the labour productivity to a great extent. The competitiveness of the garment industry in the world market is seriously affected by the ill health of the workers, since ill health decreases the labour productivity to a great extent.Objective: To find out the occupational health hazards among the workers, working in different garment factories in Bangladesh.Materials and Methods: This descriptive study was conducted from January 2013 to June 2013. Total sample was 145 and purposive sampling technique was followed for data collection, which was done by face to face interview by an interviewer. The data was collected on a structured questionnaire. Data was analyzed by computer by SPSS version 17.0. Results: Out of 145 respondents, majority (40%) were found in the age group of 16-20 years where mean age was 23.30 years with S.D. of ±6.92 years. Among all the respondents, 89% were female. 45.52% were educated institutionally. 52.4% respondents were machine operator, but maximum (75%) were unskilled and 72% had length of job between 2-7 years. 91% respondents normally worked for 8-9 hours. 85.5% did 2-3 hours overtime. In the last one year 64.8% had no accident but minor cut, burn or injury was faced by 28.3%. Most of the (44%) respondents did not complain about physical environmental pollution but 33.8% complained of noise pollution. Majority (84.8%) told that doctor & nurse were constantly present in their factory and they were satisfied with their health facilities. Maximum (51%) respondents suffered from headache or shoulder pain. Majority did not mention any permanent illness. In this study the prevalence of occupational health hazards was 88.28%. A significant relationship was found between noise pollution and headache (P value 0.014). Conclusion: More emphasis should be given to the workers to improve their health condition and working environment, so that they can increase their efficiency which can ultimately increase the production and add GDP to the country. Government should provide more fund for research purposes in order to improve the condition of the working population and their working environment. Keywords: Occupational Accidents, Bangladesh

Feeding Practices among Infants in a Rural Community in Bangladesh: A Cross-Sectional Study

Background: Proper feeding practices during infancy are necessary for the growth and development of infants and to prevent malnutrition. This study was conducted to describe the feeding practice among infants in a rural area in Bangladesh. Methods: A cross-sectional study was conducted between February and June 2013. Data was collected through face-to-face interviews of 212 mothers using a pretested questionnaire. Results: Exclusive breast feeding and complementary feeding rates were 40.6% and 97.3%, respectively. One third of the mothers practiced prelactal feeding, and honey was the most common item. Maternal illness (72.7%) was the most common reason for not giving breast milk. Infant formula was used as an alternative food in majority of the cases (72.7%). Conclusion: Percentage of exclusive breast feeding was not satisfactory. Encouragement of female education is recommended to improve feeding practices and infant car

Prevalence of Contraceptive Use among Married Women of Reproductive Age Group in a Rural Area of Bangladesh: A Cross-Sectional Study

Introduction: Population explosion is one of the important issues in all around the world and more specifically in a developing country like Bangladesh. Contraceptives are devices, techniques and methods used to prevent fertilization thereby population explosion.The present study is an attempt to assess the prevalence of contraceptive use among married women of reproductive age in a selected rural area in Bangladesh.Objectives: To assess the prevalence of contraceptive use among married women of reproductive age group (15-49 years) in a rural area of Bangladesh.Materials and Methods: This descriptive type of cross sectional study was conducted from February 2012 to June 2012 in Mulaid village of Gazipur district, Bangladesh. Purposive sampling technique was followed. Data were collected in a structured questionnaire through face to face interview. Study population was all married women of reproductive age group. Sample size was 420. Results: Among 420 respondents, 62.3% were using contraceptive methods at the time of study and rest, 37.7% were not using due to some reasons, such as pregnancy, breast feeding etc. A mostly used contraceptive method among current users (69%) was oral contraceptive pill. Conclusion: This study revealed the awareness about contraceptive used among the married women. More health education on reproductive health through school health clinic, family planning services and mass media can improve the health and family planning situation of our country. Government should provide more fund for research purposes in order to raise the awareness and control population explosion. Keywords: Contraceptive Methods, Reproduction, Bangladesh