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78 articles for “Indoor”
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Research ArticleOpen accessEvery word in the titleAnalysis of Indoor CO2 Concentration Using Split Ventilation Systems as an Indicator of COVID-19 TransmissionManuel Batista, Oscar Bulgim, Ericka Matus et al.We measured the indoor CO2 concentration in occupied areas with ventilation systems that recirculate air without an external air supply. The average time required to achieve the highest probability of contagion was also measured based on the number of participants in the group. Three different experimental groups were evaluated: Group One (G1), which included 5 participants; Group Two (G2), with … …American Journal of Applied Sciences, Vol. 20, Issue 1 · 23 Aug 2023 · 6,057 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleVision-Based Real-Time Positioning and Autonomous Navigation System Using Mobile Robot in Indoor EnvironmentsDiop Mamadou, Lim Chot Hun, Lim Tien Sze, Ong Lee YengResearch toward unmanned mobile robot navigation has gained significant importance in the last decade due to its potential applications in the location-based services industry. The increase in construction of large space indoor buildings has made difficulty for humans to operate within such environments. In this study, a mobile robot's indoor navigation algorithm is developed with vision cameras. Using two monocular … …American Journal of Applied Sciences, Vol. 13, Issue 5 · 17 May 2016 · 7,323 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBuilding Information Modeling for Indoor Environmental Performance AnalysisYaik-Wah LimThere are increasing numbers of Building Information Modeling (BIM) software available nowadays which change the working methods in Architecture, Engineering and Construction (AEC) industry. From the stages of building design development to post-occupancy management, BIM plays an essential role in collaboration among multi-discipline professions, time and cost saving, fabrication and construction as well as facilities management. With the arising concern … …American Journal of Environmental Sciences, Vol. 11, Issue 2 · 29 Apr 2015 · 7,997 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTUMOR NECROSIS FACTOR-ALPHA AS BIOMARKERS OF EXPOSURE TO INDOOR POLLUTANTS AMONG PRIMARY SCHOOL CHILDREN IN KLANG VALLEYJuliana Jalaludin, Sharifah Nazariah Syed Noh, Nur Faseeha Suhaimi, Abdah Md AkimPoor indoor air quality can be particularly harmful to children and interfere with the growth of their lung function as they spend much of their time indoors. In order to understand the mechanism of exposure in the airways, biomarkers were used as a surrogate for biological responses towards indoor air pollutants. This study aims to investigate the association between indoor … …American Journal of Applied Sciences, Vol. 11, Issue 9 · 15 Aug 2014 · 8,081 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleIndoor Environmental Comfort in Malaysian Urban HousingYaik-Wah LimIn Malaysia, terraced houses have been rapidly constructed since 50 years ago and account for 44% of the existing urban housings. However, these houses have very limited use of natural ventilation and daylighting due to openings with small window-to-floor ratio. The deep plan design causes gloomy indoor spaces, low air change rate and poor indoor air quality. Studies showed that … …American Journal of Environmental Sciences, Vol. 9, Issue 5 · 22 Nov 2013 · 7,470 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAirway Metrics, Anatomy and Growth Performance of Pigs Reared Indoors and OutdoorsChakia Joi McClendon, Sherrell Pettiford, Dawn Conklin et al.While the swine industry has made incredible strides to improve ventilation, air quality in confinement buildings remains an issue. The goal of this study is to characterize correlation between large airway metrics and growth performance in piglets reared indoors and outdoors on pasture. Three experimental trials were conducted: Trial 1 included three breed types that were strictly raised indoors, Tamworth … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 4 · 24 Sep 2013 · 7,587 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleReceived Signal Strength Indication Modeling in Indoor Wireless Sensor NetworksEdson Taira Procopio, Alexandre de Assis Mota, Lia Toledo Moreira Mota, Luiz Rodolfo Barreto da SilvaThis study aims to identify mathematical models that represent the relation between Received Signal Strength Indication (RSSI) and objects in an indoor Wireless Sensor Network (WSN). Using the Least Squares Method, four linear models have been identified: The first one relates uplink RSSI and objects; the second one relates downlink RSSI and objects; the third one relates uplink RSSI and … …American Journal of Applied Sciences, Vol. 10, Issue 9 · 24 Aug 2013 · 6,866 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStudy of Ambient and Indoor Air Quality in the Building Built on the Former LandfillAnuar Ithnin, Nazipah Zakaria, Nor Azura Sulong et al.Problem statement: The air quality study of PPR Taman Wahyu II, Selayang, Selangor was a residential project that was built on the former landfill site. The landfill site will produce landfill gases which can influence the air quality level in and outside the building. Approach: This air quality study also involving PPR Intan Baiduri, Batu Caves, Selangor as a control … …American Journal of Applied Sciences, Vol. 9, Issue 8 · 21 Jun 2012 · 6,994 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Performance of a Dual Header Pulse Interval Modulation in the Presence of Artificial Light Interferences in an Indoor Optical Wireless Communications Channel with Wavelet DenoisingS. Rajbhandari, Z. Ghassemlooy, M. AngelovaProblem statement: Similar to other baseband modulation schemes, the performance of the Dual Header Pulse Interval Modulation (DH-PIM) is adversely affected by Artificial Light Interferences (ALI) in an indoor Optical Wireless Communications (OWC) channel. Approach: The Discrete Wavelet Transform (DWT) based denoising is studied for reducing the effect of the ALI. Computer simulation is carried out to demonstrate the effectiveness … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 4 · 18 Jan 2012 · 7,785 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleNatural Ventilation of Indoor Air Temperature: A Case Study of the Traditional Malay House in PenangAhmad Sanusi Hassan, Mahyuddin RamliProblem statement: It was the aim of the study to analyze the level of performance of natural air ventilation with a case study of the traditional Malay house in Penang, Malaysia. This study provided information on the architectural design in relation to natural air ventilation. It promoted passive design in contrast to most housing design which has poor natural air … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 3 · 30 Sep 2010 · 11,967 accessesView PDFCite