Environment is a very broad concept. Everything that affects us during our lifetime is collectively known as environment. As human beings we are often concerned with surrounding conditions that affect people and other organisms. Today, all over the world there is growing concern about the deteriorating quality of environment and efforts are being made to stop the widespread abuse of environment...

Urban perception is the result of mutual transaction between human and environment and the process of perception is developed through the three continuous steps of “sensation”, “perception” and “cognition”. In the first step (sensorial perception), the environmental signals are received via sensorial sensors and each different sense based on its own essence, performance and ability has its own ...

mobile robot navigation is one of the basic problems in robotics. in this paper, a new approachis proposed for autonomous mobile robot navigation in an unknown environment. the proposedapproach is based on learning virtual parallel paths that propel the mobile robot toward the trackusing a multi-layer, feed-forward neural network. for training, a human operator navigates themobile robot in some...

Urban spaces are considered as important elements in the urban structure. These spaces are scenes in which the general activities of urban life take place and they are able to provide an opportunity for the development of innovations for the people and to act as a recreational and constructive environment in an urban collection to provide a setting while every human being would need to perceive...

air pollution is a major concern of new civilized world, which has a serious toxicological impact on human health and the environment. it has a number of different emission sources, but motor vehicles and industrial processes contribute the major part of air pollution.according to the world health organization, six major air pollutants include particle pollution, ground?level ozone, carbon mono...

This paper describes a hybrid mobile robot architecture that addresses three main challenges for robots living in human-inhabited environments: how to operate in dynamic and unpredictable environment, how to deal with high-level human commands, and how to be engaging and fun for human users. The architecture combines three components: deliberative planning, reactive control, and motivational dr...

background: humans beings are continuously exposed to ionizing radiation from natural sources. the main contributors to natural radiation are high-energy cosmic radiation and radioactive nuclides that originates in the earth’s crust. exposure to high levels of radiation can cause serious health effects. in this study an attempt has been made to monitor the levels of environmental background rad...

One of the recently considered applications of fiber optic, in their usage in building lighting systems. In this research, in order to reduce energy consumption, by transmission of sun light from the roof to the desired place (i.e. an office), the required standard luminance is produced. The main aims of this research are :1. Reduction of energy consumption.2. Making the place compatible with t...

caspian sea is the largest enclosed body of water on the earth. since the collapse of soviet union in 1991 and discovering large oil and gas fields, some issues such as political, economic and environmental events, made the caspian sea important. the ecology of the sea are being endangered due to several issues such as petroleum extraction, river and sea pollutions, water level rise, biological...