จำนวน Repository ( 2131 )
An Application of GA Algorithm on Vehicle Routing Problem in a Case Study of a Bakery Company in Thailand
This research considers the vehicle routing problem in a specific bakery making company where is located in Bangkok. This company has to produce and deliver the bakeries to its customers everyday. Until now this mentioned company generates the delivery’s route by using the experience taken from the company’s truck driver. The company has to daily use the route with unnecessary long distances. According to the given statement this research aims to develop algorithm to generate the delivery route for this company by using the Genetic Algorithm in order to minimize the transportation distances.
A Smart Mobile PV-Wind Hybrid System Prototype for isolated electrification
This paper presents the design and construction of a Mobile PV-Wind-Battery-Diesel Hybrid System Prototype for isolated electrification. The system includes a real-time monitoring system and a control unit which can control all components automatically. The design uses a short calculation method and then simulated by Homer program. The mobile unit is considered as a mobility utility for remote areas therefore the unit is constructed in a container unit which can be able to be transferred comfortably. The design has the components as : PV 2 kWp Wind turbine 1 kW Battery 24 kWh and Diesel Generator 5kW. From a long experiment the system can operate as the design and it is working stably to supply power to the load. The paper will describe fully for the design construction monitored data and analysis.
Main Causes and Prevention of Occupational Slipping Tripping and Falling in Thailand
The purpose of this study was aimed to identify the main causes and prevention of occupational slipping tripping and falling in Thailand. The results revealed that number of the accidents caused by the occupational slipping tripping and falling was high ranked of all occupational accidents in every worldly part. This study consisted of 6 operational processes. Firstly it involved seeking for statistic data and information about number of the accidents the Office of Social Security 2008. Secondly analysis of most frequently-occurred businesses in Thailand was performed. Thirdly survey planning was established by which the questionnaires were instrumental to gather data and interviewing was carried out with those concerned personnel. Fourthly selecting the survey site and lastly analysis and conclusion was made to identify the causes of the accidents as well as recommendation on prevention of the accidents. The results indicated that the causes of problem consisted of the three following factors; personnel work-associated equipments and tools and workplace environment. For personnel factor the workers were inadvertent while on duty low educated lacked of experience and safety skill training seniority drunkard or drug addicted. Regarding to work-associated equipments and tools the workers did not wear the preventive equipments safety helmet safety shoes or working barefooted. Regarding to workplace environment the ground were blocked wet and rough including the climate in wet season from the month of May to October. There were no sign or warning sign of danger. It’s suggested that the preventive action for accidents included providing the appropriate training before real performance prohibiting the alcoholic beverage dirking or the use of illicit drug. Some behaviors should be modified for examples; the elder workers should be put in the job that is lesser in risk. Consciousness and campaign on safety should be urged. It should invest on safety equipments and safety shoes; including inspecting the ground and installing the easily visual sign or warning sign in risky area.
A Solid-State Device for Fault Protection in Low Voltage Wind Turbine System
This paper presents how to design and build electrical protection equipment to apply for a wind turbine generator system which is modeled on low voltage 3 phase 380 volts system. This electrical equipment acts as a switch to open-close an electrical circuit to prevent an electrical system as well as equipments or devices in the system. It will open the circuit quickly and decrease the contact arcing of a circuit breaker. The implementation of power electronic properties is used instead of mechanical parts which is called “Solid-State Beaker”. This article presents a method of solid-state breaker simulation on the mathematical analysis via MATLAB/ Simulink program in the cases of fault occurring in an electrical system. The simulation is used as a comparison when it is brought into the system. The fault voltage is detected by RMS Method which is implemented in LAB View program. The detection signal will be sent to the solid-state breaker and order it to cut off all three lines simultaneously to confirm the efficient running of solid- state breaker. But this paper has not yet considered the effect of Harmonic.
Green Management Improves Organizational Productivity:Cases of Total Quality Management and Lean Initiatives
The organizational environments have been dynamically changed. Chief executive officer must turn an ailing organization around by rethinking a new mission. With global competition and trend of environmental performance improvement the green management then becomes substantially strategic orientation. The new management techniques such as Total Quality Management and Lean Management are introduced to the organization for achieving its new mission. The researchers use case studies method to describe the causal relationship between productivity derived from continuous improvement initiatives and green management by presenting four empirical cases. The results of all cases were measured by differentiation and integration criterion and then quantified by the concept of Time-Driven Activity-Based Costing. The findings of this paper are the causal inference and continuous improvement initiative procedure