Abstract This paper presents the experimental validation procedure of a simple override control system through a typical use case of oil pipeline with pressure and flow control using a single valve. It is based on Siemens S7-300 PLC and WinCC .The main aim of the control is to achieve a certain flow rate, however due to safety considerations, the pressure must be kept... This paper presents the experimental validation procedure of a simple override control system through a typical use case of oil pipeline with pressure and flow control using a single valve. It is based on Siemens S7-300 PLC and WinCC .The main aim of the control is to achieve a certain flow rate, however due to safety considerations, the pressure must be kept within certain limits. The pressure controller is therefore known as the “limiting controller” or “secondary controller” Read More Read Less

Abstract In this paper, the microstrip line fed rectangular patch antenna with inset has been designed and simulated by using ADS software in order to study the effects of various parameters on the antenna’s radiation characteristics. Also, twoby- two, four-by-four, eight-by-eight and sixteen-by-sixteen microstrip patch antenna arrays has been discussed. The effect on the antenna parameters due to increasing the antenna elements (array)... In this paper, the microstrip line fed rectangular patch antenna with inset has been designed and simulated by using ADS software in order to study the effects of various parameters on the antenna’s radiation characteristics. Also, twoby- two, four-by-four, eight-by-eight and sixteen-by-sixteen microstrip patch antenna arrays has been discussed. The effect on the antenna parameters due to increasing the antenna elements (array) is observed clearly on antenna gain, directivity. This type of antenna can be used for cellular phones application. Read More Read Less

Abstract Power management system in the past had little concern. The major concerns for the VLSI designers were area, performance and cost. As the trend for low power has emerged in the world of electronics, power management /dissipation has become more important consideration along with performance and shrinking technology with increased complexity. The motivation for reducing power consumption differ application to... Power management system in the past had little concern. The major concerns for the VLSI designers were area, performance and cost. As the trend for low power has emerged in the world of electronics, power management /dissipation has become more important consideration along with performance and shrinking technology with increased complexity. The motivation for reducing power consumption differ application to application .Here in our research we are presenting the survey for low power VLSI trends and also looking out for methodologies for high performance computing oriented systems till date. The idea of dynamic voltage scaling which was diminished fro few years .has taken back its position in power management system. Also, the HSA (Heterogeneous System Architecture) foundation identification for this cause is noted. Read More Read Less

Abstract The recent global economic recession that seemed to be continuing with less peaks and many valleys have seriously shook the airline industry. In order to continue with a sustainable growth in the air travel business, airlines were compelled on identifying certain service and operational areas that need to be improved in many different ways. One of the vital facts identified is... The recent global economic recession that seemed to be continuing with less peaks and many valleys have seriously shook the airline industry. In order to continue with a sustainable growth in the air travel business, airlines were compelled on identifying certain service and operational areas that need to be improved in many different ways. One of the vital facts identified is increasing the competitiveness of the airline by improving passenger perception towards the airline service quality, which could significantly affect by the extremely time-consuming check-in and boarding processes, especially during the busiest peak hours. Improving the efficiency of these processes is a major contribution factor in enhancing the service quality of the airline. Introducing Near Field Communication (NFC) enabled self check-in and self board-in kiosk would help reduce the long queues in busy peak hours while keeping the man power required at a minimum level. Having these procedures operating simultaneously with the man handled counters, enables handling more passengers within a given period of time, thus enhancing the operational efficiency. NFC is a form of wireless communication and data exchange method that uses electromagnetic radio fields in closer proximities between digital devices such as smart mobile phones and tablets. The aim of this paper is to present the findings of the study and understand the adaptability of NFC technology in passenger pre-departure functions and how it can influence in operational efficiency and performance at an airline. The study focused on ABC1 Airlines operating in Sri Lanka and concentrate on establishing and understanding the operational patterns if NFC enabled systems were introduced to airport check-in counter assignments. According to the survey results and sensitivity analysis of actual airline operational data, it was understood that using NFC enabled kiosk machines would significantly reduce the counter operation cost and improve passenger service quality, enhancing the efficiency and performance of passenger pre-departure functions at airlines. Read More Read Less