2,665 research outputs found
Organizational change and development : annotated and supplemental bibliography / 191
Includes bibliographical references (p. 48-80)
Innovative HVAC Cycles for Severe Part Load Conditions in the Humid Climate
This paper reports observations by the authors made in the course of performing field surveys and detailed analyses of approximately three
hundred U. S. Navy buildings located in a humid
climate. In the course of this work humidity
related problems were found in many of the
buildings.
Face & bypass control is suggested as one of
the best methods of achieving passive humidity
control under common difficult part load conditions. However, some conditions cannot be handled
without additional measures. This paper explores
techniques, other than reheat, as means for improving
space comfort conditions under the worst
conditions.
It is shown that pre-cooling or desiccant
dehumidification of ventilation air can offer
substantially improved performance, especially in
conjunction with varying the ventilation air quantity as a percentage of supply air
Innovative HVAC Cycles for Severe Part Load Conditions in the Humid Climate
This paper reports observations by the authors made in the course of performing field surveys and detailed analyses of approximately three
hundred U. S. Navy buildings located in a humid
climate. In the course of this work humidity
related problems were found in many of the
buildings.
Face & bypass control is suggested as one of
the best methods of achieving passive humidity
control under common difficult part load conditions. However, some conditions cannot be handled
without additional measures. This paper explores
techniques, other than reheat, as means for improving
space comfort conditions under the worst
conditions.
It is shown that pre-cooling or desiccant
dehumidification of ventilation air can offer
substantially improved performance, especially in
conjunction with varying the ventilation air quantity as a percentage of supply air
Production/maintenance cooperative scheduling using multi-agents and fuzzy logic
Within companies, production is directly concerned with the manufacturing schedule, but other services like sales, maintenance, purchasing or workforce management should also have an influence on this schedule. These services often have together a hierarchical relationship, i.e. the leading function (most of the time sales or production) generates constraints defining the framework within which the other functions have to satisfy their own objectives. We show how the multi-agent paradigm, often used in scheduling for its ability to distribute decision-making, can also provide a framework for making several functions cooperate in the schedule performance. Production and maintenance have been chosen as an example: having common resources (the machines), their activities are actually often conflicting. We show how to use a fuzzy logic in order to model the temporal degrees of freedom of the two functions, and show that this approach may allow one to obtain a schedule that provides a better compromise between the satisfaction of the respective objectives of the two functions
Competition between In-Plane vs Above-Plane Configurations of Water with Aromatic Molecules: Non-Covalent Interactions in 1,4-Naphthoquinone-(H2O)1-3Complexes
Non-covalent interactions between aromatic molecules and water are fundamental in many chemical and biological processes, and their accurate description is essential to understand molecular relative configurations. Here we present the rotational spectroscopy study of the water complexes of the polycyclic aromatic hydrocarbon 1,4-naphthoquinone (1,4-NQ). In 1,4-NQ-(H2O)1,2, water molecules bind through O-H···O and C-H···O hydrogen bonds and are located on the plane of 1,4-NQ. For 1,4-NQ-(H2O)3, in-plane and above-plane water configurations are observed exhibiting O-H···O, C-H···O, and lone pair···π-hole interactions. The observation of different water arrangements for 1,4-NQ-(H2O)3 allows benchmarking theoretical methods and shows that they have great difficulty in predicting energy orderings due to the strong competition of C-H···O binding with πand π-hole interactions. This study provides important insight into water interactions with aromatic systems and the challenges in their modeling
Online information on chronic pain in 3 countries: an assessment of readability, credibility, and accuracy
Objectives:To assess the readability, credibility, and accuracy of online information on chronic pain in Australia, Mexico, and Nepal.Methods:We assessed Google-based websites and government health websites about chronic pain for readability (using the Flesch Kincaid Readability Ease tool), credibility (using the Journal of American Medical Association [JAMA] benchmark criteria and Health on the Net Code [HONcode]), and accuracy (using 3 core concepts of pain science education: (1) pain does not mean my body is damaged; (2) thoughts, emotions, and experiences affect pain; and (3) I can retrain my overactive pain system).Results:We assessed 71 Google-based websites and 15 government websites. There were no significant between-country differences in chronic pain information retrieved through Google for readability, credibility, or accuracy. Based on readability scores, the websites were "fairly difficult to read," suitable for ages 15 to 17 years or grades 10 to 12 years. For credibility, less than 30% of all websites met the full JAMA criteria, and more than 60% were not HONcode certified. For accuracy, all 3 core concepts were present in less than 30% of websites. Moreover, we found that the Australian government websites have low readability but are credible, and the majority provided all 3 core concepts in pain science education. A single Mexican government website had low readability without any core concepts but was credible.Conclusion:The readability, credibility, and accuracy of online information on chronic pain should be improved internationally to support facilitating better management of chronic pain
Imaging ancient and mummified specimens: dual-energy CT with effective atomic number imaging of two ancient Egyptian cat mummies
In mummified animals and humans, soft tissues like skin and muscle become more dense over time due to dehydration. At the same time, bone becomes less dense as marrow is replaced by air. This is a problem for the radiological examination of ancient specimens, as currently used methods such as single-energy CT and MRI rely on density and water content to produce tissue contrast in an image. Dual energy CT with effective atomic number imaging overcomes this problem, as the elemental constituents and consequently effective atomic number of a specimen remain relatively constant over time. This case study of two ancient Egyptian cat mummies demonstrates that effective atomic number imaging can differentiate desiccated soft tissues from low-density bone in ancient remains. Effective atomic number imaging has the potential for superior tissue contrast resolution when compared to single energy CT and can be used to provide new paleoradiological perspectives.James M. Bewes, Antony Morphett, F. Donald Pate, Maciej Henneberg, Andrew J. Low, Lars Kruse, Barry Craig, Aphrodite Hindson, Eleanor Adam
Factors associated with development of excessive fatness in children and adolescents: a review of prospective studies
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/99011/1/obr12035.pd
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