نتایج جستجو برای: indoor environment

تعداد نتایج: 543514  

2016
Hongbo Ma Zhi Zhuang Hai Ye Jun Cheng Jiao Chen Bin Qin

Stilted building is a unique kind of buildings distributed across the southwest mountainous area in China, especially the Miao and Dong dwellings in Qiandongnan area. In this paper, two local traditional stilted houses, old-fashioned and new-fashioned, were selected for case study to investigate indoor environmental quality by field survey. The indoor thermal, luminous and acoustic environment ...

2003

indoor environment. The most important include indoor pollutants, outdoor pollutants near the building, pollution transport through the ventilation system, air cleaning or filtration, and indoor climate (temperature and relative humidity). Many building materials, the furnishings and equipment, and the occupants and their activities are sources of indoor pollution. Following is a list of some o...

2006
Qingyan Chen Jelena Srebric

Computational Fluid Dynamics (CFD) has become a useful tool for the study of indoor and outdoor environment problems. Recently, the Massachusetts Institute of Technology (MIT) has developed several Reynolds Averaged Navier-Stokes (RANS) equation models and Large Eddy Simulation (LES) models to enhance the capabilities of CFD for use in indoor and outdoor environment design. The new models have ...

2010
Bibik Mikhail

The target of the paper is to provide guidelines for indoor planning and optimization using an outdoor-to-indoor repeater or a dedicated indoor system. The paper provides practical information for enhancing the performance of high-speed downlink packet access (HSDPA) in an indoor environment.

2013
Yi An Yan Zhuang Huosheng Hu Fei Yan

Environment exploration and recognition play an important role for service robots to operate in indoor environments that have a large scale and dynamic changes. This paper presents a new geometric model of the environment that is constructed with line segments and ellipses by estimating geometric properties and extracting geometric discontinuities. Two new types of indoor environment representa...

2016
Song Yongxian Zhang xianjin

In order to reliable data transmission of wireless sensor network (WSN) in indoor environment, the indoor field intensity distribution and transmission characteristics of electromagnetic wave were researched. First of all, the 3D model in specific indoor environment was built by the finite difference time domain method (FDTD).Then, layout of room, different furniture, position of field source a...

2017
Tieming Guo Songtao Hu Guodan Liu

The indoor overall environmental comfort of part limited spaces is studied in this paper. The operative temperature, illumination, and noise intensity are used as objective parameters in order to evaluate the thermal, luminous, and acoustic environment. The thermal, luminous, and acoustic environment are investigated by using the subjective questionnaire in this experiment, and the function rel...

To offer indoor services to occupants in the context of smart buildings, it is necessary to consider information concerning to the identity and location of the occupants. This paper proposes an indoor positioning system (IPS) based on Wi-Fi fingerprint and K-nearest neighbors (KNN) method. The positioning of a mobile device (MD) using Wi-Fi technology involves online and offline phases. In this...

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