نتایج جستجو برای: highway system
تعداد نتایج: 2238993 فیلتر نتایج به سال:
To protect the driver of off-highway dump trucks from the harmful vibration, this paper presents the comparison results to determine the optimal damping of the seat system by different optimization design plans. Three optimization schemes are considered including individually optimizing the damping of the cushion, individually optimizing the damping of the seat suspension, and integrately optim...
Considerable experimental and theoretical research has been carried out in an attempt to design an automated highway system that can provide more eecient utilization of the highways and at the same time be safer and more comfortable than the current highway system. Here we present a uniied framework for carrying out safety calculations for the automated highway problem. We obtain suucient condi...
Network Geographic Information System is a GIS based on Web technical standards and communication protocol of network , a product of Web technology and GIS technology, it is based on Internet / Intranet to provide users with information distributed in space, data sharing, exchange and cooperation. WebGIS make full use of network resources, a large scale to reduce costs and complexity of dealing...
تعیین نرخ عوارض آزادراه های بین شهری، بگونه ای که بیانگر هزینه های واقع بینانه استفاده از فضای جاده باشد، مورد نظر این تحقیق است. بطورکلی هزینه های آزادراه شامل هزینه های قبل از بهره برداری و هزینه های بعد از بهره برداری است، که باید از محل درآمد های آزادراه، در طول دوره بازگشت سرمایه بازپرداخت شود. متدولوژی اقتصادی حل مسأله برای تعیین نرخ عوارض در آزادراه ها که در آن از روابط و فاکتورهای اسا...
کارایی سیستمهای حمل و نقل یک عامل تعیین کننده در رشد اقتصادی است و از آنجایی که هزینه های این سیستم چه از نظر سرمایه گذاری اولیه و چه نگهداری و استفاده بسیار سنگین میباشد،تجزیه و تحلیل اقتصادی طرحها و برنامه ریزیهای حمل و نقل از اهمیت زیادی برخورداراست.در غالب مسایلی که منجر به نوجیه فنی-اقتصادی طرحها می شود، نقش جذب ترافیک به محور جدید بسیار مهم است و در اکثر موارد منجر به اریه مدلهای جذب تراف...
چکیده ندارد.
Highway planning is a process wherein a highway network con sidered adequate to meet both the present and future traffic demands of an auto-oriented, ever-growing populace is visualized. It is also the process in which a procedure designed to implement the plan should be formulated. The first step in the planning process is the determination of high way needs. The elimination of these needs r...
Rural highway is the foundation of highway network construction and the important bridge for balancing urban and rural harmonious development. Rural highway has the basic, pilot and driving function to new rural construction. This paper took a sampling survey on 173 villages in Hebei Province. According to the 687 questionnaires, this paper set up an evaluation system of the rural highway const...
Urban joblessness and inner city deprivation are a feature of the late twentieth century throughout the developed world. This paper considers the effectiveness of spatiallytargeted programmes in creating employment in deprived urban areas. It begins by discussing the twin themes of “enterprise” and “localism” which have dominated the UK policy response to urban problems in the 1990s and goes on...
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