To promote the effort for energy conservation, it is also important to estimate the indoorenvironmental quality (IEQ) from the aspect of office workers productivity. A conceptualdiagram for the evaluation of the effect of IEQ on productivity was proposed. The resultsfrom subjective experiments of short term showed that human responses, such as fatigue,cerebral blood flow, sensation to the environment and SBS symptoms, were important for theevaluation of productivity.
The Swedish indoor climate guidelines issued by Swedvac has been thoroughly revised. The new document is adapted to harmonize with related international, European and Swedish standards. The document comprises thermal climate, indoor air quality, sound and light.
This study conducted the experiment of concentration reduction effect if indoor air pollutants to Korean native plants, Fatsia japonica Decne. et Planch. and Ardisia pusilla DC. The two plants are advantageous in that they are highly available as they grow wild, and being easy to get. Fatsia japonica Decne. et Planch. is a plant of its wide and large leaf diverged 7 or 8 parts, which is thought to have a high effect of air purification. Ardisia pusilla DC. has a smaller leaf than Fatsia japonica Decne. et Planch., which is characterized by more leaves and beautiful.
The aim of this study was the experimental determination of particle deposition for both different particle size fractions and different indoor surface materials. The selected surface materials were glass, gypsum plate, carpet, and curtain. These materials were tested vertically in a full-scale test chamber. Experiments took place in a 32 m3 chamber with walls and ceiling made of glass. Prior to each experiment the chamber was flushed with outdoor air to reach an initial particle concentration typical of indoor air in buildings with natural ventilation.
This paper presents an evidential review of current knowledge on the issue of walking versus sedentary behaviour in office environments. It considers the medical evidence in relation to cardio-vascular activity and the long-term effect of sedentary compared to mobile work routines. The paper then goes on to consider the concept of embedded health within buildings, reflected in the way that buildings are designed and managed. It highlights in particular the role of the facilities manager in enabling such embedded health.
Field studies have shown that speech is the most distracting sound in open-plan offices. On the other hand, laboratory studies have shown that speech impairs the performance of cognitively demanding work tasks, e.g. reading and memory-recall tasks. The sound level of speech does not determine the degree of distraction caused by speech. Instead, Speech Transmission Index, STI, which correlates with speech intelligibility can explain the distracting power of speech much better. STI can be determined also between workstations in open offices.
A long-term field study was conducted in an office for seven months to clarify the effect of thermal environment on productivity. Seven male software programmers participated as subjects. They answered the questionnaires on their personal computer including thermal sensation votes, complaints about their working environment, fatigue, vitality, mental workload and self estimated productivity every workday. The numbers of keystrokes were automatically recorded during the operation of their computers. Advanced Trail Marking Test (ATMT) was also conducted as the estimation of performance.
Environmental temperature in which perform commercial hybrids on privately-owned family farms in the Banat area (România) has a strong impact on the valorisation of feed and particularly on energy, as there is an optimal temperature at which feed is valor
A subjective experiment was conducted in a climatic chamber to evaluate the effects of improvement of indoor environmental quality on occupant’s performance. The chamber was conditioned with the combination of: operative temperatures of 25°C or 28°C, illu
This paper presents the development of distribution models of office employee’s thermal sensation and an introduction to a methodology how to integrate the fact that humans perceive temperature differently with the effects of temperature on mental perform
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