this study represents effect of four variables in performance of a heat-pump in two cities of tehran and rasht. a computer program has been developed, simulating a certain heat pump acting in different environments with different refrigerants in heating season. the analysis is based on a homogeneous model. effect of different refrigerants, depth of the buried heat exchangers and moisture conten...

Large cities and metropolitan areas in developing countries are growing rapidly. These areas grew by attracting all facilities, services and capital of the country. Tehran has been the major city and center for decision and policy making in various administrative, political, economic and socialaspects. This political focus has brought economic, social, educational focus that attracted a vast ma...

background: one of the main indexes of development is health index or the degree to which a society enjoys health and therapeutic services. the present study was done with the aim to analyze development levels in cities in tehran regarding health infrastructural index using the standardized score and morris’ model. methods: this is a descriptive and pragmatic study which ranks 14 cities in tehr...

1. INTRODUCTION Europe's cities 1 – home to 70% of the EU population and generating over 80% of the Union's GDP-are connected by one of the world's best transport systems. But mobility within cities is increasingly difficult and inefficient. Urban mobility is still heavily reliant on the use of conventionally-fuelled private cars. Only slow progress is being made in shifting towards more sustai...

Abstract Currently Zhejiang ports have gradually changed from large-scale expansion to high-quality upgrading development, and pay attention the integrated development with railway, aviation, highway other transportation modes. In 2019, Province proposed a new pattern of “Four-port Linkage” seaports (including inland ports) as leader, dry basis, airports characteristics infoport link, in which ...

Cities play a vital role in promoting economic growth and prosperity. The development of cities largely depends upon their physical, social, and institutional infrastructure. In this context, the importance of intraurban transportation is paramount. This article provides an overview of urban transport issues in India. Rather than covering every aspect of urban transportation, it primarily focus...

the prevalence of non-communicable diseases such as hypertension and diabetes including obesity has increased over the past few years in iran. the increase in these diseases has been associated with increased urbanization and lifestyle changes. the burden of non-communicable diseases (ncd) is increasing in low and middle-income countries. the aim of this report is to address the threat of ncds ...

A noticeable implication of unprecedented expansion in size and population of major cities of Pakistan has been the demand for transport facilities and services. The generally low car ownership rate and limited access to personal motorised transport has created space for public transport to become the most efficient way of providing good access for longer distance trips within the cities. The u...