نتایج جستجو برای: ineffective transport system in large cities including tehran
تعداد نتایج: 17471564 فیلتر نتایج به سال:
iranian traditional cities were created with a system based on experiments and gradual establishment of society through time. qajar era is especially important in iranian art history. until mid qajar era, iranian cities’s architecture mainly took benefit of its common traditional architecture that is already seen in most desert-surrounding cities. till this era, there was not any connection bet...
nowadays, transportation sector consumes about 27 percent of the whole energy in iran. therefore, after domestic and business sectors which consume about 40 percent of the whole energy, transportation is placed in the second rank. however, the financial value of transportation is of the highest importance. moreover, having 55percent of gasoline product consumption transportation has been also r...
One of the most striking feature of the space-economy is that cities form a hierarchical system exhibiting some regularity in terms of their size and the array of goods they supply. In order to show how such a hierarchical system may emerge, we consider a model with monopolistically competitive markets for the industrial sectors. As transport costs steadily decrease from large values, the urban...
implicit and unobserved errors and vulnerabilities issues usually arise in cryptographic protocols and especially in authentication protocols. this may enable an attacker to make serious damages to the desired system, such as having the access to or changing secret documents, interfering in bank transactions, having access to users’ accounts, or may be having the control all over the syste...
the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...
*Corresponding author: [email protected] ABSTRACT: Transfer-transport of the waste is one of key functional elements in solid waste management from technical and financial viewpoint. Unfortunately very few reach activities has been conducted in this field regarding local characteristic of phenomenon which urges undertaking local surveys and research projects. Tehran Organization of Waste...
In recent years, semiconductor nanostructures have become the model systems of choice for investigation of electrical conduction on short length scales. Quantum transport is studied in a two dimensional electron gas because of the combination of a large Fermi wavelength and large mean free path. In the present work, a numerical method is implemented in order to contribute to the understanding ...
During the COVID-19 pandemic, significant changes occurred in customer behavior, especially traffic and urban transmission systems. In this context, there is a need for more scientific research managerial approaches to develop behavior-based smart transportation solutions deal with recent customers, drivers, behaviors, including volume of routes. This has tried find comprehensive view novel tra...
This paper analyzes the political economy of transport-system choice, with the goal of gaining an understanding of the forces involved in this important urban public policy decision. Transport systems pose a continuous trade-off between time and money cost, so that a city can choose a fast system with a high money cost per mile or a slower, cheaper system. The paper compares the socially optima...
from the past to the present time, in all civilizations and countries, urbanization is considered the most striking evolution of human societies. with the advent of the industrial revolution and the rapid expansion of cities, societies were faced with numerous problems. one of the most significant problems is extreme centralization in one city or more and fragmentation of urban hierarchical sys...
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