Big data and predictive analytics have the potential to make cities more efficient. Yet cities often lack the resources to use new data and methods effectively, and private researchers often lack the incentives to help solve the problems that cities face. New platforms—such as Kaggle, TopCoder, and DrivenData—now enable governments and other organizations to outsource large-scale prediction pro...

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...

The prevention of respiratory diseases caused by high air pollution rates is an important issue in big cities, where industrialization and overpopulation cause an increase in allergenic particles that aggravate the disease

today narcotics and other drugs have become the major cause of poisoning in big cities of iran. typical study of 50 drug-related deaths caused by use of narcotics, phenobarbital, tricyclic antiderpressants, meprobamate, aspirin, diazepam, chloropromazine, phenytoin, carbamazepine and propranolole, alone or with other drugs and toxic substances is described. this study covered the following topi...

In recent years, big data analysis has been applied to the design and development of smart cities, which creates opportunities as well as challenges. It is necessary to retrieve a large amount of social media data and physical sensor data for this purpose. However, different cities have different infrastructures and populations, resulting in the sparsity of some types of data, such as social me...

Dynamic social media content, such as Twitter messages, can be used to examine individuals' beliefs and perceptions. By analyzing Twitter messages, this study examines how Twitter users exchanged and recognized toponyms (city names) for different cities in the United States. The frequency and variety of city names found in their online conversations were used to identify the unique spatiotempor...

due to the massive loss of leaves in parks and green spaces and big cities such as isfahan and the lack of domestic production of leaf vacuum shredder machine for use in large green spaces of parks, the design and construction of the collecting and recycling by the system is need so the design of the vaccum section which is one of the main parts and includes entrance, channels and ducts and exh...

one of the big concerns of big cities is facing with the increase of fossil fuel vehicles in the roads. the cars intensify greenhouse gas emission in civic centers. one approach to reduce the emission is replacing the cars by plug-in electric vehicles (pevs). in spite of reducing the emission, pevs have some adverse effect on electric distribution networks. technical challenges such as load and...

Nowadays a great deal of attention is devoted to the issue of supporting big data analytics over big mobile social data. These data are generated by modern emerging social systems like Twitter, Facebook, Instagram, and so forth. Mining big mobile social data has been of great interest, as analyzing such data is critical for a wide spectrum of big data applications (e.g., smart cities). Among se...