The Effects of Supervisory Behavior on IT employees’ Job Satisfaction: An Exploratory Study

The purpose of the study is to influence positive motivational behaviors and expected satisfaction from the employees working at the organizations under close supervision. It has been monitored two supervisory behaviors on IT employees’ job satisfaction: authoritarian and positive achievement motivation behavior. Data were collected through pre-structured questionnaire from the employees working in the IT department of Real Estate and Hosing Development Industry in Bangladesh (N=80).   The data indicated that IT Supervisors were engaged in positive motivational behaviors and expected greater satisfaction from the employees under their supervision; IT employee’s job satisfactions were increased. Key words: Supervisory behavior, Job satisfaction, Organization Behavior

Inverse sinusoidal pulse width modulation switched electric vehicles’ battery charger

This paper documents an efficient, cost-effective and sustainable grid-connected electric vehicles (EVs) battery charger based on a buck converter to reduce the harmonics injected into the mains power line. To utilize the switching converter as an effective power factor controller (PFC), inverse sinusoidal pulse width modulation (ISPWM) signals have been applied. A mathematical relationship between the sending-end power factor and the duty ratio of the switching converter has been presented. To ensure the sustenance of the proposed method, a simulation model of the proposed battery charging system has been tested on PSIM simulation platform. The simulation results yield to a lossless charging system with a sending-end power factor close to unity. An experimental testbed comprising a 60 V battery bank of 100 A-h capacity with a charging current of 7 A has been generated. The laboratory assessments present an 88.1% efficient charging prototype with a resultant sending-end power factor of 0.89. The laboratory framework concerns with the comparative analysis of the power efficiency, sending-end power factor and lines current total harmonic distortion (THD) values obtained for different charging methods and the evaluations corroborate the reliability of the proposed work

Multi Criteria Optimization Approach for Dressing of Vitrified Grinding Wheel

Rotary diamond dressers are widely used for the dressing to improve the efficiency of vitrified grinding wheel. The paper focuses on the process parameters, i.e., feed speed of dresser, depth of cut, grinding wheel velocity, velocity ratio between grinding wheel and rotary dresser, number of pass and dressing method (up-cut or down-cut) in rotary diamond dressing. The objective is to investigate the effect of these process parameters with their interactions for two response parameters, dressing ratio and overlapped dressed area. As far as the response parameters are concerned, the goal is to maximize dressing ratio and minimize overlapped dressed area simultaneously. Thirty-six experiments were designed and performed. Analysis of variance and multi-criteria optimization approach are opted to find out significant process parameters and optimal parameter setting. Finally, the significant process parameters, dressing method and number of pass are identified as well and the optimal parameter setting is also determined

Micro Enterprise Financing in an Islamic Economic Framework: Bangladesh Perspective

Abstract. The paper studies the deficiency of the neo liberal policy agenda that aims totransform non-governmental organization (NGOs) engaged in poverty alleviationinto formal financial institutions seeking access to capital market and performingon a commercial basis. It propounds that poverty focused credit programs aimedat distributive equity are logically inconsistent with an ethically neutral liberal marketorder. In comparison, it is inferred in the paper that Islamic economic principles affirm the logical consistency and adequacy to reality of Islamicfinancial program and poverty focused credit programs. These programs, as indicated by the welfare banking ofIslamic Banks in Bangladesh, seek access to financialmarkets, which are characterized by the presence of Shariah instrument prohibiting interest and profiteering and promoting charity.Keywords. Micro finance, Micro business, Economic development.JEL. G21, N80, Q12

Portable system for monitoring and controlling driver behavior and the use of a mobile phone while driving

There is an utmost requirement for technology to control a driver's phone while driving, which will prevent the driver from being distracted and thus saving the driver's and passenger;s lives. Information from recent studies has shown that 70% of the young and aware drivers are used to texting while driving. There are many different technologies used to control mobile phones while driving, including electronic device control, global positioning system (GPS), onboard diagnostics (OBD)-II-based devices, mobile phone applications or apps, etc. These devices acquire the vehicle information such as the car speed and use the information to control the driver's phone such as preventing them from making or receiving calls at specific speed limits. The information from the devices is interfaced via Bluetooth and can later be used to control mobile phone applications. The main aim of this paper is to propose the design of a portable system for monitoring the use of a mobile phone while driving and for controlling a driver's mobile phone, if necessary, when the vehicle reaches a specific speed limit (>10 km/h). A paperbased self-reported questionnaire survey was carried out among 600 teenage drivers from different nationalities to see the driving behavior of young drivers in Qatar. Finally, a mobile application was developed to monitor the mobile usage of a driver and an OBD-II module-based portable system was designed to acquire data from the vehicle to identify drivers' behavior with respect to phone usage, sudden lane changes, and abrupt breaking/sharp speeding. This information was used in a mobile application to control the driver's mobile usage as well as to report the driving behavior while driving. The application of such a system can significantly improve drivers' behavior all over the world.Author Contributions: Experiments were designed by A.K., M.C.; Experiments were performed by A.D.,M.M.; Results were analyzed by A.K.,M.C.,R.D.,N.E. and D.M.; All authors were involved in interpretation of data and paper writing. Funding: The publication of this article was funded by the Qatar National Library. Conflicts of Interest: The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the resultsScopu

Persistence of chloramphenicol in the fish flesh patin (Pangasius hypothalamus) and tilapia (Oreochromis niloticus)

Introduction: Increasing antibiotic resistance in bacteria is a serious global problem. This study was aimed to extract the antibiotic Chloramphenicol (CAP) from different parts of the fish flesh. Methods: Fish fleshes were excised from two commercially important fishes: Oreochromatis niloticus.(Red Tilapia) and Pangasius hypothalamus (Patin). The fleshes were chosen form head and tail region where generally antibiotics are spiked to avoid bacterial contamination while kept in cold storages of supermarkets. Each fish fleshes were weighed and spiked with 20,40,80 and 160ppm of CAP and stored at 4°C. The CAP residue from the flesh was extracted immediately after the first spiking was considered as Day-1. The whole extraction processes were done for 1,7,14 and 28 days. HPLC (High Performance Liquid Chromatography) was used to determine the presence of CAP residue in the tested fish flesh. Results: The results showed variations on the percentage of antibiotic residue recoveries at different concentration. In this study, CAP did not degrade and showed variations on the presence of antibiotic residue in the fish flesh. The recoveries of the entire CAP spiking samples ranged from 4.0% -100%. It also revealed the presence of antibiotic residue in Malaysian freshwater cultured fishes. Thus, the relevant authorities should take immediate action regarding this issue in order to prevent the harmful effects especially to human. Conclusions: Nevertheless, the study portrays that antibiotic residues can be sustained long time in the food products under storage conditions, which might have harmful effects on human when they consumed these frozen fishes

Prevalence of Behavioral and Emotional Disorders among the Orphans and Factors Associated with these Disorders

Background: Orphans are the special group of children who are generally deprived and prone to develop psychiatric disorders even reared in well run institution. Objectives: To find out the prevalence of the behavioral and emotional disorder among the children living in orphanage in Dhaka city, and to assess the possible factors associated with the presence of disorders among this study population. Methods: It was a cross sectional descriptive study conducted in selected orphanages. A Total 342 cases were included. One stage structured assessment of psychopathology was carried out by using a valid Bangla version of DAWBA (The Development and Well-Being Assessment). Data analysis was done by SPSS for windows 16.0 version. Results: The results indicate that overall prevalence of behavioral and emotional disorders were 40.35%, in which Behavioral disorder was 26.9%, Emotional disorder was 10.2% and both Behavioral and Emotional disorder were 3.2%. Higher length of stay and low level of education of foster mother were significantly associated with psychiatric morbidity of the respondents. Conclusions: It can be concluded that behavioral and emotional disorders are highly prevalent among orphan children and adolescents with residential care that needs to be addressed. Moreover, measure for early identification and intervention will improve the quality of life of the orphan population.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.10997 BSMMU J 2012; 5(1):29-3

Development of mucoadhesive sprayable gellan gum fluid gels

The nasal mucosa provides a potentially good route for local and systemic drug delivery. However, the protective feature of the nasal cavity make intranasal delivery challenging. The application of mucoadhesive polymers in nasal drug delivery systems enhances the retention of the dosage form in the nasal cavity. Several groups have investigated using low acyl gellan as a drug delivery vehicle but only limited research however, has been performed on high acyl gellan for this purpose, despite its properties being more conducive to mucoadhesion. High acyl gellan produces highly elastic gels below 60 °C which make it difficult to spray using a mechanical spray device. Therefore, in this study we have tried to address this problem by making fluid gels by introducing a shear force during gelation of the gellan polymer. These fluid gel systems contain gelled micro-particles suspended in a solution of un-gelled polymer. These systems can therefore behave as pourable viscoelastic fluids. In this study we have investigated the rheological behavior and mucoadhesion of fluid gels of two different types of gellan (high and low acyl) and fluid gels prepared from blends of high and low acyl gellan at a 50:50 ratio. The results demonstrated that by preparing fluid gels of high acyl gellan, the rheological properties were sufficient to spray through a standard nasal spray device. Moreover fluid gels also significantly enhance both high acyl and low acyl gellan mucoadhesion properties

Prevalence of Behavioral and Emotional Disorders among the Orphans and Factors Associated with these Disorders

Background: Orphans are the special group of children who are generally deprived and prone to develop psychiatric disorders even reared in well run institution. Objectives: To find out the prevalence of the behavioral and emotional disorder among the children living in orphanage in Dhaka city, and to assess the possible factors associated with the presence of disorders among this study population. Methods: It was a cross sectional descriptive study conducted in selected orphanages. A Total 342 cases were included. One stage structured assessment of psychopathology was carried out by using a valid Bangla version of DAWBA (The Development and Well-Being Assessment). Data analysis was done by SPSS for windows 16.0 version. Results: The results indicate that overall prevalence of behavioral and emotional disorders were 40.35%, in which Behavioral disorder was 26.9%, Emotional disorder was 10.2% and both Behavioral and Emotional disorder were 3.2%. Higher length of stay and low level of education of foster mother were significantly associated with psychiatric morbidity of the respondents. Conclusions: It can be concluded that behavioral and emotional disorders are highly prevalent among orphan children and adolescents with residential care that needs to be addressed. Moreover, measure for early identification and intervention will improve the quality of life of the orphan population.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.10997 BSMMU J 2012; 5(1):29-3