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This Paper Summarizes components, functionality, calculations, & challenges faced by an on-going project on water heating system utilizing waste-heat. The Source & the Sink of the system are also outlined. The structural integrity aspects are highlighted. Moreover future dimensions of the project are discussed as well
This paper presents a miniaturized planar circular disc UWB antenna design for wireless communications. Printed on a dielectric substrate and fed by 50Ω microstrip line with truncated ground plane, the proposed antenna has been demonstrated to provide an ultra wide 10dB return loss bandwidth with satisfactory radiation properties. The special structure reduces the spatial volume and it is used to realize the miniaturization of the antenna. Ansoft High Frequency structure Simulator (HFSS) software tool has been employed for obtaining the simulation results. The return loss, voltage standing wave ratio (VSWR), radiation patterns and current distributions of the antenna are discussed.
This paper focus on the design and construction of an optimization charging system for Li–Po batteries by means of tracked solar panels. Thus, the implementation of a complete energy management system applied to a robotic vehicle. The construction of a solar tracking mechanism aimed at increasing the power regardless of its mobility. An alternative design of power system performance based on a pack of two batteries is proposed.
This paper put a new mathematical system (stacked system) interested in arranging elements in a manner simple analytical set (according to the importance of the element in the set) and to prove that this system is a semi-group and prove some properties of semi-groups in this system.
Today, computing becomes steadily more important and more used. Cloud computing has appeared as an accepted computing model for processing very large volume of data. Cloud computing is an unavoidable trend in the future computing development of technology. In this paper, we have discussed the computing taxonomy and their relationship with cloud computing.
Network Security is always foremost and big issue in wired and wireless network. Wireless network, whether it is infrastructure mode or mobile adhoc mode, breaks the barriers of wired network and are easily accessible to everyone but everything is at a cost, the cost is in the form of increased susceptibilities and vulnerabilities of network. Packet delay is a result of poor utilization of network capacity when it is integrated with routing algorithms. Routing protocol contains very serious security issues in adhoc network. The code of AODV and DSDV are having such issues and new protocol are extended in the form of SEAD, SEAR and SAODV. This paper analyses the ways the security is breached by the hackers who emerge as malicious node in Infrastructure as well as in adhoc mode of network. The handiwork is prepared by way of Developing experimental Testbed and simulation in NS2 then proper measure are proposed in order to overcome all the problems.
In looking accommodation business as a part of hospitality industry, there are many new players enter to this business reflecting over supply situation in Thailand. it is important for newcomers or current players to create differentiate to stand out and gain the competitive advantage. Boutique hotel becomes solution as a value-added product. This paper explores relationships between service quality and perceived consumption value toward customer satisfaction that may influence brand loyalty. The study focus on Thai consumers who had experienced with boutique hotel with 301 feedbacks. The study show that perceived consumption value significantly play an important row positively impact customer satisfaction and brand royalty more than service quality. Based on the results, focusing consumption value strategy can help raising competitive advantage is suggested.
This paper presents a novel low-cost, highly efficient, reliable and compact motor drive topology for residential and commercial application. The Brushless DC (BLDC) motor is a simple robust machine which has found application over a wide power and speed of ranges in different shapes and geometry. This paper briefly reviews the fundamentals behind the motor and also the different types of BLDC motors with different geometries and then presents a new configuration for BLDC motor/generator, which does not use a permanent magnet in the rotor. A new soft-switching boost converter is proposed in this paper. The conventional boost converter generates switching losses at turn ON and OFF,
The infrastructure in Korea was built after the significant growth in the economy after 1960. Today, this aged infrastructure has been inappropriately maintained and managed without awareness of man-made disasters. Even though the Korean government established complementary laws and regulations to prevent man-made disasters, these disasters have occurred in various locations and have been presented as social problems, they have also resulted in large social and economic losses. This paper examines both historical reviews and damage assessments and provides improvement to plans for typical manmade disasters including fire, collapse, explosion, traffic accidents, and environmental pollution.
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