Traffic congestion prevention system

Transport is one of the key elements in the development of any country; it can be a powerful catalyst for economic growth. However, the infrastructure does not give enough to the huge number of vehicles which produces several problems, particularly in terms of road safety, and loss of time and pollution. One of the most significant problems is congestion, this is a major handicap for the road transport system. An alternative would be to use new technologies in the field of communication to send traffic information such as treacherous road conditions and accident sites by communicating, for a more efficient use of existing infrastructure.  In this paper, we present a CPS system, which can help drivers in order to have a better trip. For this raison we find the optimal way to reduce travel time and fuel consumption. This system based on our recent work [1]. It´s new approach aims to avoid congestion and queues, hat assure more efficient and optimal use of the existing road infrastructure. For that we concentrate by analyzing the useful and reliable traffic information collected in real time. The system is simulated in several conditions, Experimental result show that our approach is very effective. In the future work, we try to improve our system by adding more complexity in our system

EVs Grid Integration Performance Evaluation and Congestion Prevention

The ecosystem friendly and socio-economical merits of Electrical Vehicles (EVs) have enhanced its application globally. Although it is widely argued that EVs grid integration undermines power system security, reliability and upsurge electricity consumption, but the benefits in emission reduction is enormous, which conforms to the Asian Pacific Partnership on Clean Development and Climate agreement with US. However, the purpose of this study is to evaluate the impact of EVs on Medium Voltage (MV) distribution network: voltage stability and thermal overloading of transformers and cables on an IEEE 14-Bus system. The proposed method is a holistic approach in which the impact on the steady state operation of individual components (EV charger, load, transformers, buses, etc) of the system would be investigated for reliability. A load flow analysis would also be conducted on the network for power loss evaluation. However, the anticipated results of this study show that integration of large number of EVs to grid system increased line losses, transformer and cable overloading, and reduced system stability, hence, the needed for grid architecture compensation cannot be overemphasized. Therefore, the results after Bus compensation should show improved system stability, voltage profile, reduced thermal loading and congestion

Coordinated Charging of Electric Vehicles for Congestion Prevention in the Distribution Grid

Distributed energy resources (DERs), like electric vehicles (EVs), can offer valuable services to power systems, such as enabling renewable energy to the electricity producer and providing ancillary services to the system operator. However, these new DERs may challenge the distribution grid due to insufficient capacity in peak hours. This paper aims to coordinate the valuable services and operation constraints of three actors: the EV owner, the Fleet operator (FO) and the Distribution system operator (DSO), considering the individual EV owner’s driving requirement, the charging cost of EV and thermal limits of cables and transformers in a distribution grid capacity market framework. Firstly, a theoretical market framework is described. Within this framework, FOs who represent their customer’s (EV owners) interests will centrally guarantee the EV owners’ driving requirements and procure the energy for their vehicles with lower cost. The congestion problem will be solved by a coordination between DSO and FOs through a distribution grid capacity market scheme. Then, a mathematical formulation of the market scheme is presented. Further, some case studies are shown to illustrate the effectiveness of the proposed solutions

Методы и средства эффективного управления передачей данных в защищенных компьютерных сетях

Выполнен анализ современных средств управления передачей данных в компьютерных сетях на основе протокола TCP/IP. Разработан новый метод раннего приостановления передачи пакетов, базирующийся на принципе активного управления очередями пакетов в маршрутизаторах и серверах, и на его основе предложены средства предотвращения перегрузок трафика в защищенных компьютерных сетях. Проведенные исследования средств предотвращения перегрузок в компьютерных сетях подтвердили повышение эффективности предлагаемых методов и средств по сравнению с существующими, что особенно важно в практических приложениях для реализации сетевых сервисов.The analysis of modern means for data transfer control in computer networks, based on TCP/IP protocol is performed. The new method with the packets transfer early delay based on active management of the packets queues in routers and servers is developed. The means for traffic congestion prevention in secured networks are suggested on its basis. The researches of the means for congestion prevention in networks confirmed the efficiency of the suggested methods and means in comparing them to existing, that is especially important for network services realization.Виконано аналіз сучасних засобів управління передачею даних у комп’ютерних мережах на основі протоколу TCP/IP. Розроблено новий метод раннього призупинення передачі пакетів, який базується на принципі активного управління чергами пакетів у маршрутизаторах та серверах, і на його основі запропоновано засоби запобігання перевантажень трафіка в захищених комп’ютерних мережах. Проведені дослідження засобів запобігання перевантажень в комп’ютерних мережах підтвердили підвищену ефективність запропонованих методів та засобів у порівнянні з існуючими, що особливо важливо в практичних застосуваннях для реалізації мережевих сервісів

Development of a building information modelling (BIM) migration path model for construction professionals

The construction professionals have the notion that by implementing Building Information Modelling (BIM) in construction could overcome problems such as delay, cost overrun, clashes in project design and undesirable quality in construction. However, they failed to take the advantages of the BIM benefit as they are still trying to find the best way to take on board the BIM into current practices. Most of the professionals do not know ‘when’ and ‘how’ to apply BIM throughout the construction lifecycle. Several research models related to BIM has been developed to improve and encourage BIM implementation. Nevertheless, the developed models have limitations in highlighting the steps involved that could assist the construction professionals in implementing BIM effectively in Malaysia. Therefore, this research is aimed to develop a model that would be able to assist Malaysian construction professionals in implementing BIM in a structured way. A semi-structured interview was carried out with respondents that have various experienced and currently involved in BIM projects in the Malaysian construction industry. Findings show that the construction professionals are lacking in knowledge and experience in using BIM in various stages of construction. Thus, they were unable to fully capitalise the benefit of 3D models. Migration path model was proposed and evaluated as a strategic approach for BIM implementation in the Malaysian construction industry. The identification of five (5) activities (BIM Awareness, Develop BIM Strategy, Implement BIM, Monitor BIM and Expand BIM Implementation) with the three (3) enablers (BIM work contract, BIM work process and BIM technology) in the model is expected to be able to assist construction professionals to implement BIM with the right BIM concept and later, the benefit could be obtained for improving construction project. The proposed model could be as a guideline for construction professionals in implementing BIM, specifically in countries that new in BIM. The model is also expected to be able to fill the gap in BIM implementation by supporting the initiatives by the Malaysian government for increasing productivity in construction projects by using new technology like BIM

Comparative Study Of Congestion Control Techniques In High Speed Networks

Congestion in network occurs due to exceed in aggregate demand as compared to the accessible capacity of the resources. Network congestion will increase as network speed increases and new effective congestion control methods are needed, especially to handle bursty traffic of todays very high speed networks. Since late 90s numerous schemes i.e. [1]...[10] etc. have been proposed. This paper concentrates on comparative study of the different congestion control schemes based on some key performance metrics. An effort has been made to judge the performance of Maximum Entropy (ME) based solution for a steady state GE/GE/1/N censored queues with partial buffer sharing scheme against these key performance metrics.Comment: 10 pages IEEE format, International Journal of Computer Science and Information Security, IJCSIS November 2009, ISSN 1947 5500, http://sites.google.com/site/ijcsis

Traffic Simulation Model for Port Planning and Congestion Prevention

National Research Foundation (NRF) Singapore under its Corp Lab @ University schem