Effects of circadian rhythm phase alteration on physiological and psychological variables: Implications to pilot performance (including a partially annotated bibliography)

The effects of environmental synchronizers upon circadian rhythmic stability in man and the deleterious alterations in performance and which result from changes in this stability are points of interest in a review of selected literature published between 1972 and 1980. A total of 2,084 references relevant to pilot performance and circadian phase alteration are cited and arranged in the following categories: (1) human performance, with focus on the effects of sleep loss or disturbance and fatigue; (2) phase shift in which ground based light/dark alteration and transmeridian flight studies are discussed; (3) shiftwork; (4)internal desynchronization which includes the effect of evironmental factors on rhythmic stability, and of rhythm disturbances on sleep and psychopathology; (5) chronotherapy, the application of methods to ameliorate desynchronization symptomatology; and (6) biorythm theory, in which the birthdate based biorythm method for predicting aircraft accident susceptability is critically analyzed. Annotations are provided for most citations

Aerospace Medicine and Biology. A continuing bibliography with indexes

This bibliography lists 244 reports, articles, and other documents introduced into the NASA scientific and technical information system in February 1981. Aerospace medicine and aerobiology topics are included. Listings for physiological factors, astronaut performance, control theory, artificial intelligence, and cybernetics are included

Aerospace medicine and biology: A continuing bibliography with indexes (supplement 333)

This bibliography lists 122 reports, articles and other documents introduced into the NASA Scientific and Technical Information System during January, 1990. Subject coverage includes: aerospace medicine and psychology, life support systems and controlled environments, safety equipment, exobiology and extraterrestrial life, and flight crew behavior and performance

Designing sustainable energy landscapes : concepts, principles and procedures

The depletion of fossil fuels, in combination with climate change, necessitates a transition to sustainable energy systems. Such systems are characterized by a decreased energy demand and an increase in the use of renewables. The objective of this dissertation is to advance the planning and design of sustainable landscapes, where energy needs can be fulfilled by locally-available renewable sources. What is important to the designer is to understand the principles by which sustainable energy landscapes can be designed, and how to organize the design process. Three different approaches have been pursued: research for design, research of design, and research-driven design. The study reveals three points of particular importance. First, the concept of exergy is critical; it draws special attention to the quality of energy carriers and the organization of sources and sinks in space and time. Second, the optimum scales of energy systems vary and depend on factors such as the quality of the energy carrier and infrastructure. Third, the long-term nature of creating sustainable landscapes requires us to go beyond conventional planning and design practice. The five-step framework proposed in this dissertation can help to integrate current trends and critical uncertainties into the design process

Aerospace Medicine and Biology: A continuing bibliography with indexes, supplement 192

This bibliography lists 247 reports, articles, and other documents introduced into the NASA scientific and technical information system in March 1979

College of Engineering research activities and annual report, July 1, 1976-June 30, 1977

Annual report of research activities and publications of the faculty and students of the College of Engineering, July 1, 1976-June 30, 1977. DEAN\u27S OFFICE FILE COPY initially stamped on cover

Development of Simulation Based Approaches for Cost Estimation and Effect Analysis in Industrial and Humanitarian projects, Including System Dynamic Model and Monte Carlo Simulation

Cost management has become an integral part of management fields these days and has acquired great weight in the sector of project management as well. For most beneficiaries in the industry and humanitarian field, the management of projects is synonymous with the management of cost that affects directly the funds they need to mobilize to deliver their scheme. This thesis deals with the development and validation of simulation-based methods in the industry and the humanitarian field. In addition, several novel methods of cost management have been proposed considering the complexity of different factors. In the industry field, construction projects are characterized by great uncertainty. Appropriate risk analysis techniques are required to estimate the adequate coverage level against the occurrence of extra costs to increase the progress of the project in the tenders. The project margin increases when an excessive provision leads to more comprehensive coverage of the risks. Also, an accurate estimation of the contingency reserve is a crucial subject in construction projects to reduce the risk of overruns\u2019 costs to an acceptable level and ensure the competitiveness of the company\u2019s bid. To achieve this goal, a Company\u2019s traditional approach has been applied to a real railway project and then a stochastic Risk Mode and Effect Analysis (RMEA) methodology base on Monte Carlo Simulation compared with the outcome of the company\u2019s traditional approach applied to the same project. Most of the contingency estimation methods are included problems of subjectivity, complex mathematical models, and inaccurate estimation. This research proposes a combination of the Risk Mode and Effect Analysis (RMEA) with Monte Carlo Simulation (MCS) to determine the amount of allocated contingency fund that overcomes other methods\u2019 limitations. The output of the analysis is a cumulative distribution function that demonstrates a coverage level related to the contingency amount to control extra cost and reduce the amount of contingency in projects. The developed method is validated by applying a real construction project and the obtained results are compared with the outcomes\u2019 of the company\u2019s traditional approach, clearly demonstrate the potential and the benefits of the proposed methodology. The result of the proposed method allows the decision-makers to operate with a lower contingency amount and control extra expenses of projects. In addition, a Decision Support System (DSS) approach using Failure Mode Effect Analysis and Monte Carlo Simulation has been discussed in this chapter. Besides, in the humanitarian field, A System Dynamic (SD) model has been applied to a humanitarian project to study the impact of different levels of financial aid paid to beneficiaries for different impact factors and estimate financial aid variation. Natural and man-made disasters seem unpredictable every year, increasing a wide range of universal sufferers. Several people are affected by the direct outcomes of these disasters, and their life depends on disaster relief aid administered by humanitarian organizations. Recently, there has been renewed interest in cash distribution in the humanitarian sector during disaster relief to increase access of vulnerable people to supporting services such as health or education and develop their life\u2019s condition while rising the efficiency of humanitarian organizations committed to the program. The research proposes a casual-loop and system dynamic model to assess multi aspects of related impact factors to provide optimal support of beneficiaries. The model provides a decision-making framework with a high-level overview of the interactions between the education and health aspects of the recipient\u2019s life, provides a system dynamics analysis including interactions that could have led to improving the vulnerable people's condition life. This system dynamics approach can be used to study the significant factors on education and health aspects of refugee crises such as the case of Syrian refugees in Turkey. Reviewing the humanitarian management literature, a causal loop is developed to better understand the health and education variables and their interactions. Then a system dynamic model is proposed and validated by historical data of Syrian refugees in Turkey. The result of financial aid sensitivity shows that more financial aid from humanitarian organizations are significantly improved the general health of refugees and also it is caused higher attendance for children in schools. In addition, enhanced financial aid supports can lead to improving access to water and hygiene facilities and also building more schools for their children

Aerospace medicine and biology: A continuing bibliography with indexes (supplement 288)

This bibliography lists 190 reports, articles and other documents introduced into the NASA scientific and technical information system in August 1986

Aerospace medicine and biology: A continuing bibliography with indexes (supplement 279)

This bibliography lists 175 reports, articles, and other documents introduced into the NASA scientific and technical information system in December 1985

Physiology of chimpanzees in orbit. Part 1: Scientific Report

Major achievements and accomplishments are reported for the Physiology of Chimpanzees in Orbit Program. Scientific studies relate to behavior and physiology, and engineering studies cover telemetry, behavioral training, systems tests, life support subsystems, and program plan