Monitoring System of Environment Noise and Pattern Recognition

This paper presents an overview of the wireless monitoring system of environment noise, placed throughout Historical Centre of México City which represents an attractive technological innovation. It takes permanent measurements of noise levels and stream the data back to the main monitoring station every five minutes and the measurements of noise produced during the take-off in a location of the International Airport. The data acquisition is made at 25 KHz at 24 bits resolution. This work allows analyzing the urban noise level and its frequency range. Additionally, a computational model for aircraft recognition using take-off noise spectral features is analyzed based on other previous results. Eight aircraft categories with all signals acquired in real environments are used. The model has an identification level between 65 and 70% of success. These spectral features are used to allow comparison with other aircraft recognition methods using speech processing techniques in real environments. This system type helps to foresee potential effects to health of environment noise.

Lichens as Bio-Indicator for Air Pollution and Their Relevancy in Pokhara, Nepal

The use of naturally occuring lichens as a bioindicator to assess the health of environment is a well proved potential strategy to monitor any habitat without device/ instruments. The article clearly revealed that the quality of air pollution has been a major problems in city area and suburban areas. In this case, the lichens could be used as reliable indicators to trace the air polluted sites and It could be useful to combat the decreasing anthropogenic disturbances such as vehicular emission, constrution of civil works, etc. The essence of these studies provide an understanding of environmental impacts and can follow the policy makers to protect the Lichen flora and air pollution related problems.

Research on a Chinese Mode of New Urban Community Environmental Health Management

Standing by nowadays sight, the Environmental health services is an important part in local government’s public services. Environmental health, also being called sanitation, refers to the health of environment in city space. During the course of the modernization construction and development, the performance of local government to manage sanitation will seriously affect the city appearance and the quality of people’s life. In This text, the author will focus on the application on current situation of management on environmental health in boom city communities to find some problems; then help to develop a proper management mode for china’s environmental health in boom city communities.