Search

Concerning the development of a company, the interaction between customers and the company is essential. In this case, the use of technology-based systems for customers will significantly increase customer spending. Therefore, the company must create a system based on service technology that allows customers to obtain information or other knowledge from the company quickly. The system known as E-business is part of technology development, especially in the SMEs environment. This research is initial research in making the concept of integration between e-business and technology acceptance model. The result is an integration model with a complete discussion of the supporting variables and indicators. The model development results will be continued by assessing all variables and indicators in the following research.

This paper describes about the basic understanding procedure undertaken in building the electromagnetic levitation mini-model using E-I design topology. Simulation was done on the E-I core design using COMSOL software to study the distribution of the magnetic flux and flux leakages. Two types of E-core design were proposed and the rectangular shape gives the better output because of less flux leakages around the core. Besides that, the process of generating pulses using H-bridge to energize the coil winding on the E-core is also explained. From the simulation result, the test jig was assembled based on the parameter used in the simulation. The test jig was then placed at the SCML-02 to test for its levitation performance. The PID-controller in LabView software was employed together with the H-bridge PWM type to produce its modulated signals. With this design, the magnetic levitation is succeeded up to 5 mm separation between the E-core and I-core.

The trend of internet of things (IoT) makes the cloud less effective because networked control systems need low latency while cloud have high latency for processing data from sensors and devices. In that kind of situation, fog computing is introduced as the complement of cloud computing. However, unlike cloud services, fog services are limited to certain geographical area. As a consequence, fog services handover is needed in order to accommodate user’s mobility. This paper is focusing on microservices handover that follows user’s movement. The microservices installed in the current fog node are sent to another service coverage of a new fog node for continuing the same service to the users. Fog node contains a docker that runs MySQL, python script, and busybox services. When it comes to handover, docker will freeze current session and convert it to a checkpoint file. The file is created by taking a snapshot of the container, which consists of processes in memory, volume or image. The file will be sent by using secure shell (SSH) or file transfer protocol (FTP). At the destination fog node, the file will be processed in order to resume the service. The results show that delay of SSH is always higher than FTP in all experiments, in which the largest delays are 484.026 seconds for SSH protocol and 146.41 seconds for FTP protocols. As for checkpoint and restore process, those delays tend to be similar with respect to both SSH and FTP protocols but they are still affected by the size of snapshot and checkpoint file.

Wireless power transfer is the transmission of electrical energy from a power source to an electrical load without any conductive physical connection. Wireless electricity ensure that the cell phones, laptops, iPods, and other power electrical devices get changed on their own, with no need of plugging them that can prevent the sockets with all sorts of wires. Wireless power transfer is when the magnetic field is transferred over short distance. The magnetic field is created using inductive coupling between coils of wire or electric fields using capacitive coupling between electrodes. The most common form of wireless power transmission is carried out using direct induction followed by resonant magnetic induction. The carrying fluxes that induce in the inductor can be captured by another inductive coil that can produce an induced flux between the receiver coils that coupled to the primary coil. Since this technique using magnetic field to transfer the electrical energy, the flux that produces in the primary coil must be in high density with high frequency. Thus, the tesla coil is used as a transmitter to produces high voltage, high frequency and low alternating current in order to produce high density flux. In this work, a tesla coil is a main part of transmitter component in wireless electricity apparatus and need to develop with a view to demonstrate how magnetic induction is coupled to perform a wireless power transfer. In addition, the construction of winding coils of the tesla coil would be the great effects in order to provide electricity to supply a load without wires in distances. The advantages of the wireless electricity system would be completely eliminating existing wires for electrical appliances between power sources. With wireless electricity, the electrical system will be more secure as it will prevent user from electrocution of current and the power failure due to short circuit and fault or power loss on cable would never exist.

Selection of energy source depends on several factors, including energy availability, economic and power requirements. Hydro power is more cost effective than any other form of renewable power. This paper studies the performance of various stator designs in a micro hydro generator. The generator generates energy using rainwater that falls from the roof drainage system. The rainwater flows through the drainage hits the turbine and generates output power less than 500 W. This entire system consists of two main parts; mechanical and electrical. This paper focuses on the factors of designing micro hydro generator; the rotor and stator which the performance of each design of the stator is tested. The design factors to be considered in the stator are the copper wire size and number of turns of copper wire with 8 poles of magnet placed at the rotor. The designed generator produces output power in AC, then it is converted into DC using rectifier. The output power of this generator must be able to withstand over 2.5 W with 8 V DC voltage and 250 mA DC current at the highest rotation speed; 900 rpm. However, the power produced depending on capacity of rainwater as well as the pressure of the rainwater that runs from the roof drainage system that hits the turbine.

The ‘Light Emitting Diode’ (LED) is not a new technology, however, it is used widely in many related products and being adopted in our daily life. However, for the street lighting system, LED technology is not fully accepted at the moment to replace the ‘High Pressure Vapour Sodium’ (HPSV) street light which has been used throughout the country. Due to sudden increment in operating costs and energy supply tariff, this technology starts to gain its consideration because of its ability in saving the energy. The street lighting system involves relative complex specification especially in terms of safety, therefore, the LED street light is still at its initial level. In Malaysia, the first pilot project in implementing the LED street lighting system was installed at federal road with 6-lane dual carriageway by the local authority. The pilot project focuses on the structure of the road and the on site lighting measurements. The aim of this paper is to study on the ability to identify whether the LED street lights can meet the specification requirements mentioned in MS-825. As a result, the comparison is made between HPSV and LED street lights are capable to satisfy the specification requirements. In addition, from the ‘Return on Investment’ (ROI) shows that the paybacks can be achieved within 5 years which under warranty period by the manufacturer or supplier. This proves that the proposed of replacing HPSV with LED street light is reasonable.

The electricity supply industry restructuring has started in the 1980s in Chile and UK. It spreads to the Latin American countries such as Argentina and accelerated in the 1990s in diverse forms in the USA, Australia, the Nordic and Asian countries. The main drive for electricity market restructuring in UK came from the government's belief that the advantages of competition among energy suppliers and it offers wider choice for customers. Meanwhile, in the countries of Asia, the restructuring is driven by a need for rapid expansion of capacity in generation, transmission and distribution. Three electricity supply models considered are Single Buyer, Pool Model and Bilateral Model. This paper evaluates the economic benefits from customer and electricity provider sides based on case study created.