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Decision matrix for liquid loading in gas wells for cost/benefit analyses of lifting optionsPark, Han-Young 10 October 2008 (has links)
Field-proven solutions already exist to reduce the loss of gas production when
liquid loading begins to occur. However, the choice of remedial technique, its feasibility,
and its cost, vary considerably depending on a field's location, size export route, and the
individual operator's experience. The selection of the best remedial technique and the
timeframe within which the remedial action is undertaken are critical to a project's
profitability. Although there are literature reviews available regarding solutions to liquid
loading problems in gas wells, a tool capable of helping an operator select the best
remedial option for a specific field case still does not exist.
This thesis proposes a newly developed decision matrix to screen the possible
remedial options available to the operator. The matrix can not only provide a critical
evaluation of potential solutions to the problem of liquid loading in gas wells vis-à-vis
the existing technical and economic constraints, but can also serve as a reference to
operators for investment decisions and as a quick screening tool for the selection of
production optimisation strategies. Under its current status of development, this new tool consists of a decision
algorithm built around a decision tree. Unlike other data mining techniques, decision
trees quickly allow for subdividing large initial datasets into successively smaller sets by
a series of decision rules. The rules are based on information available in the public
domain. The effectiveness of the matrix is now ready to be tested against real field
datasets.
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Prevention of occupational injuries caused by manual handling in health care settings costs and benefits /Ng, Kim-ching. January 2009 (has links)
Thesis (M.P.H.)--University of Hong Kong, 2009. / Includes bibliographical references (p. 36-38).
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An investigation of the maximum acceptable weight of lift for bagsOsgood, Richard Thomas 08 1900 (has links)
No description available.
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A dynamical systems investigation of loaded jump squat kinematicsKruger, Sarah E. January 2005 (has links)
The purpose of this project was to assess the coordination and performance of the jump squat movement for multiple loading conditions. Seventeen male subjects between 18 and 30 years of age, performed two jump squats for each loading condition, 0-60% of their one repetition maximum (1 RM) incremented by 10% for each trial. Video capture was used to assess kinematics and a force platform in combination with a linear position transducer was used to determine power. All of the peak power values occurred between 0% and 30% of 1 RM and there was an overall linear decrease in power output from 0-60% (p = 0.000). The shank-thigh and thigh-trunk mean absolute relative phase (MARP) values were shown to have linear increases from 0-60%, with p-values of 0.003 and 0.014 respectively. The MARP values calculated from 0-30% were significantly different than those at 60% for both segmental relationships. These results indicate that optimal jump squat performance occurs from 0-30% of 1 RM. / School of Physical Education, Sport, and Exercise Science
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Methods for determining power output and factors affecting the optimal load during free-standing jump squatsNewell, Philip B. January 2005 (has links)
The purpose of this thesis was to determine the validity of an linear position transducer / force platform method as compared to a 2D video analysis / force platform method for determining power output during free-standing jump squats, and to examine the effects of strength level and sport background on the optimal load for power output. The results showed that the LPT method was not suitable for measuring power output during free-standing jump squats. In addition, the optimal load range was determined for the VA method to occur between 10% and 20% of a predicted 1RM squat. Strength level did not have a significant affect on the optimal load, however, there were differences in strength and power output by sport. It is recommended that future research examine the specific limitations of an LPT for measuring un-constrained movements, as well as the effects of athletic and training background on the optimal load. / School of Physical Education, Sport, and Exercise Science
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Can a static lifting test predict dynamic ability in subjects with low back pain? :Field, Rowena. Unknown Date (has links)
Thesis (MPhysio)--University of South Australia, 1998
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Determination of the range of safe-comfortable lifting postures using the aesthetic ergonomics theorySalazar, Nicolas F. January 2009 (has links)
Thesis (Ph. D.)--West Virginia University, 2009. / Title from document title page. Document formatted into pages; contains xii, 196 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 141-146).
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The development of a dynamic scissor lift modelHartsell, Jared J. January 2010 (has links)
Thesis (M.S.)--West Virginia University, 2010. / Title from document title page. Document formatted into pages; contains vii, 55 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 53-54).
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The effects of strength training on arterial structure and function in middle-aged and older adultsCortez-Cooper, Miriam Yvette, Farrar, Roger P., Tanaka, Hirofumi, January 2005 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisors: Roger P. Farrar and Hirofumi Tanaka. Vita. Includes bibliographical references.
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Personality characteristics of three groups of weight-trainersLeithwood, Kenneth Arthur January 1967 (has links)
The personality characteristics of three groups of Weight-Trainers were investigated in order to determine:
1. if Weight-Trainers, as a group differed significantly from the general population;
2. if Weight-Trainers differed from one another when compared on the basis of their motivation for participation;
3. if one group of Weight-Trainers deviated from the norm more than the other groups.
Cattell's Sixteen Personality Factor Questionnaire was administered to forty-five subjects. Fifteen of these subjects trained as a conditioning activity for another sport, fifteen trained to improve their physique and fifteen trained to increase their strength for Weight Lifting competitions.
Results, derived by the methods of an analysis of variance and "t" tests, indicated that:
1. Weight-Trainers, as a group, differ at the one per cent level from the general population on measures of intelligence, character strength, naivete, extroversion and self-sufficiency;
2. Weight-Trainers are a relatively homogeneous group of athletes. / Education, Faculty of / Curriculum and Pedagogy (EDCP), Department of / Graduate
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