Penyeimbangan beban kerja di kalangan pemandu lori tangki: Satu kajian kes

Kajian ini membincangkan masalah beban keja seimbang bagi pemandu lori tangki disebuah syarikat pengangkutan yang berpangkalan di Pelabuhan Kelang. Bagi menyeimbangkan jumlah muatan yang perlu dibawa oleh setiap pemandu agar beban kerja adalah sama, satu model pengaturcaraan integer telah dibangunkan dengan mengambilkira beberapa kekangan yang telah dikenal pasti. Antara kekangan tersebut ialah jumlah trip yang dibawa setiap pemandu tidak boleh melebihi jumlah hari bekeja dalam sebulan. Model ini dibangunkan bertujuan menyeimbangkan beban keja dengan memfokuskan kepada jumlah kapasiti yang dibawa bagi setiap pekerja supaya setiap pekerja akan membawa jumlah kapasiti yang seimbang. Model tersebut diselesaikan dengan menggunkan perisian LOG. Kajian ini juga turut memuatkan analisis sensitiviti (what - if scenario) bagi melihat berapakah jumlah pekerja sebenar yang diperlukan bagi mengangkut muatan tersebut. Hasilnya, setiap pemandu lori akan membawa antara 354 - 408 tan setiap bulan dengan bilangan trip setiap pekerja sebanyak 11 - 13 trip. Dapatan kajian ini berguna kepada pihak pengurusan syarikat dalam mnjanakan pengagihan tugasan bulanan yang lebih berkesan

A comparative study of work values between US and Malaysia marketing students

This paper aims to identify the ranking of importance of work values as perceived by marketing students, and to explore the underlying dimensions of work values in the Malaysian context.It also aims to determine whether there are differences of work values between marketing students in Malaysia and US.Previously validated Super’s Work Values Inventory (SWVI) containing 15 dimensions was completed by business students undertaking Marketing and other majors in Malaysia and USA. Factor analysis is employed to examine the underlying structure of work values.The study confirms the two-factor structure (intrinsic and extrinsic) of work values and shows that marketing students value the work that allows them to fulfill their potential in terms of creativity (M = 4.23) and intellectual stimulation (M = 3.99) in Malaysia. Moreover, the results showed that significant differences in work values exist between Malaysia and US students with respect to economic return, way of life, altruism, prestige, management and variety.This article contributes to the worldwide knowledge on work values by highlighting the importance of understanding potential marketing professionals’ work values in the two different countries. Respondents selected from two countries will limit the generalizability of the study

Combating obesity through healthy eating behavior: A call for system dynamics optimization

Poor eating behavior has been identified as one of the core contributory factors of the childhood obesity epidemic.The consequences of obesity on numerous aspects of life are thoroughly explored in the existing literature.For instance, evidence shows that obesity is linked to incidences of diseases such as heart disease, type-2 diabetes, and some cancers, as well as psycho social problems.To respond to the increasing trends in the UK, in 2008 the government set a target to reverse the prevalence of obesity (POB) back to 2000 levels by 2020. This paper will outline the application of system dynamics (SD) optimization to simulate the effect of changes in the eating behavior of British children (aged 2 to 15 years) on weight and obesity. This study also will identify how long it will take to achieve the government’s target. This paper proposed a simulation model called Intervention Childhood Obesity Dynamics (ICOD) by focusing the interrelations between various strands of knowledge in one complex human weight regulation system. The model offers distinct insights into the dynamics by capturing the complex inter dependencies from the causal loop and feedback structure, with the intention to better understand how eating behaviors influence children’s weight, body mass index (BMI), and POB measurement. This study proposed a set of equations that are revised from the original (baseline) equations. The new functions are constructed using a RAMP function of linear decrements in portion size and number of meal variables from 2013 until 2020 in order to achieve the 2020 desired target. Findings from the optimization analysis revealed that the 2020 target won’t be achieved until 2026 at the earliest, six years late.Thus, the model suggested that a longer period may be needed to significantly reduce obesity in this population

Evaluation on absenteeism effect in production line at Aircraft Composite Manufacturer

This paper studies the effect of absenteeism in production line.The analysis shows that the number of absentees at production line increases the workload to the available worker and gives effect to the production.Thus, it gives a major potential for generating bottlenecks.To mitigate this problem and ensure that the workload of workers is at optimum level, an appropriate number of production plans need to be investigated.This paper demonstrates the integration of Discrete Event Simulation (DES) and System Dynamics (SD) in simulating the effect of absenteeism in production flow at an aircraft composite manufacturing factory.Based on the preliminary result, the effect of the absenteeism is found to influence the amount of throughput, waiting and cycle time

A Non-Standard Optimal Control Problem Using Hyperbolic Tangent

A current ideal control issue in the region of financial aspects has numerical properties that do not fall into the standard optimal control problem detailing. In our concern the state an incentive at the final time, y(T ) = z, is free and obscure, and furthermore the integrand is a piecewise consistent capacity of the obscure esteem y(T ). This is not a standard optimal control problem and cannot be settled utilizing Pontryagin’s Minimum Principle with the standard limit conditions at the final time. In the standard issue a free final state y(T ) yields an important limit condition p(T ) = 0, where p(t) is the costate. Since the integrand is a component of y(T ), the new fundamental condition is that y(T ) yield to be equivalent to a specific necessary that is a consistent capacity of z. We present a continuous estimation of the piecewise consistent integrand function through hyperbolic tangent approach and tackle a case utilizing a C++ shooting method with Newton emphasis for tackling the two point boundary value problem (TPBVP). The limiting free y(T ) value is computed in an external circle emphasis through the Golden Section metho

Contribution a la valorisation du phosphate naturel de Tilemsi (Mali) par l'action d'acides mineraux et de composes organiques humifies

SIGLECNRS TD Bordereau / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Modeling the effect of sedentary behaviour on the prevention of population obesity using the system dynamics approach

Obesity is a medical condition where an individual has an excessive amount of body fat.There are many factors contributing to obesity and one of them is the sedentary behavior.Rapid development in industrialization and urbanization has brought changes to Malaysia’s socioeconomic, especially the lifestyles of Malaysians.With this lifestyle transition, one of the impact is on weight and obesity. How does sedentary behavior have an impact on the growth of Malaysian population’s weight and obesity? What is the most effective sedentary behavior preventing strategy to obesity? Is it through reduction in duration or frequency of sedentary behavior? Thus, the aim of this paper is to design an intervention to analyse the effect of decreasing duration and frequency of sedentary behavior on the population reversion trends of average weight (AW), average body mass index (ABMI), and prevalence of overweight and obesity (POVB). This study combines the different strands of sub-models comprised of nutrition, physical activity and body metabolism, and then synthesis these knowledge into a system dynamics of weight behavior model, namely SIMULObese. Findings from this study revealed that Malaysian’s adults spend a lot of time engaged in sedentary behavior and this resulted in weight gain and obesity. Comparing between frequency and duration of sedentary behavior, this study reported that reduced in duration or time spend in sedentary behavior is a better preventing strategy to obesity compared to duration. As a summary, this study highlighted the importance of decreasing the frequency and duration of sedentary behavior in developing guidelines to prevent obesity

Participatory curriculum development A workshop to update the Forest Guards Course in Nepal

Contains two separate papersAvailable from British Library Document Supply Centre-DSC:6077.203658(24D) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo