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The influence of indoor environment in office buildings on their occupants : expected-unexpected

For that study the measurement of parameters in the indoor environment were carried out with a simultaneous survey with questions dealing with elements of the indoor environment, health status and health problems. That study reveals a significant role for the psychological state and psychological factors of the respondents of natural ventilation when sujectively describing the indoor environment.

The performance and subjective responses of call-center operators with new and used supply air filters at two outdoor air supply rates

For that study an experiment was conducted during 2 months, in a call center : each week 26 operators returned questionnaires recording their environmental perceptions and sick building syndrome symptoms. In parallel, the recording of their average talk-time was monitored every 30 minutes.The results of that study confirm that increasing outdoor air supply rates and replacing used filters with new ones has a positive effect on health, comfort and productivity of workers.

New indoor environment chambers and field experiment offices for research on human comfort, health and productivity at moderate energy expenditure

The international center for indoor environment and energy, at the Technical University of Denmark has at its disposal 3 old and 9 new spaces for studying indoor environments and their incidence on human comfort, health, productivity at moderate energy demands. This paper describes those climate chambers, new laboratory and offices used for field experiments.

The influence of personality, measured by the Karolinska Scales of Personality (KSP), on symptoms among subjects in suspected sick buildings.

That research is based on the assumption that there are differences among normal subjects as to their vulnerability to stress-related symptoms to health/illnessThe study aims at increasing the understanding of SBS complaints in relation to personality factors.A relationship between personality characteristics and health-related behaviors, and between personality characteristics and perceived health is demonstrated.

Respiratory effects of experimental exposure to office dust

For that study, 24 healthy non-sensitive persons were tested to analyse the respiratory effects caused by exposures to office dust. The results of the study suggest that most of the tradiitional risk factors can be rejected as single responsible risk factor.

Effect of ventilation on health and other human responses in office environment

As ventilation is a significant consumer of energy the rates of ventilation have often been minimized, particularly after the energy crisis in the early 70s, in order to reduce equipment and energy costs. This has caused in many countries indoor air quality problems. It has been shown that ventilation rates have adverse effects on communicable respiratory illnesses; on sick building syndrome symptoms; on productivity and perceived air quality. Often the prevalence of SBS symptoms is higher in air-conditioned buildings than in naturally ventilated buildings.

Impact of indoor environment on human health - Egyptian experience -

This study is concerned with the impact of indoor environment on the local National health in airconditioned spaces. The present study is carried out in different applications in Egypt. Two differentmethods are utilized in the present study. An experimental measurement program and comprehensive survey are carried out for some air conditioned applications. The numerical methodsare also utilized to simulate applications that represent the effect of indoor environment onoccupancy health using different indoor air quality indices.

Evaluation of Input - Side Parameter of Productivity by Cerebral Blood Oxygenation Changes

To evaluate effect of indoor environment quality on productivity, the changes in cerebral bloodoxygenation by near infrared spectroscopy was examined. In this study, relationship between the changes in cerebral blood oxygenation and difficulty level of task was evaluated by subjective experiments. Four tasks were given to the subjects: single-digit addition, double-digit multiplication, triple-digit addition, and triple-digit multiplication. It was evaluated that the more difficult task types to solve, the more oxygenated hemoglobin and total hemoglobin concentration were needed.

Effects of Reported Neurobehavioral Symptoms on Call Center Operator Performance in the Tropics

A 2x2 balanced experiment was carried out in an air-conditioned call center in the Tropics using a blind intervention approach to study the combined effects of temperature and outdoor air supply rate. Twenty-six permanent call center operators participated in the nine-week study. Intensity of headache symptom was significantly reduced with increased outdoor air supply rate at 24.5C (P<0.03). Similar observation at P<0.04 was observed for a principal component (neurobehavioral symptoms and self-assessed productivity) derived from a set of self evaluated symptoms.

Nasal histamine reactivity among adolescents in a remediated moisture-damaged school - a longitudinal study

This paper sums up a longitudinal study carried out on a group of students and teachers in a remediated moisture-damaged school. Registration of subjective data (questionnaires) and objective data (nasal histamine reactivity) has been made. Results and discussion are presented.

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