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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Teknikutvecklingens påverkan på manöverkrigföringen

Lindqvist, Christoffer January 2009 (has links)
<p>Sedan 1980 talet har det skett en ansenlig utveckling utav tekniken fram till nutid. Utvecklingen skulle nästintill kunna liknas vid en revolution enligt många. Detta innebär att krigföringens grundprinciper och sättet att föra krig på kommer att påverkas av teknikutvecklingen på ett eller annat sätt. Författaren är intresserad av att se hur denna snabba utveckling har påverkat manöverkringföringen.</p><p>Syftet med uppsatsen är sålunda att undersöka hur den påtagliga teknikutvecklingen har påverkat manöverkrigföringen och dess grundprinciper. Som metod används deskription. Först har manöverkrigföringen förklarats och därefter de viktigaste tekniska trenderna för arbetet. En fallstudie tillsammans med en kvalitativ textanalys görs på Irakkriget 2003. Detta att slutligen i fallstudien undersöka hur den nya tekniken använts.</p><p>Slutsatsen i uppsatsen påvisar att teknikutvecklingen innebär fördelar för de som har förmågan att nyttja den nya tekniken. Men att det tar lång tid att samordna ny teknik i ett helhetsfungerande koncept. Teknikutvecklingen genererar bättre förutsättningar för att tillämpa manöverkrigföringens grundprinciper.</p> / <p> A considerable development of technology has been taken place since 1980s until today. The development could almost be likened to a revolution. This means that the basic principles of warfare and the means to wage war on will be affected by the development in one way or another. The author is interested to see how this rapid development has affected the maneuver warfare.</p><p>The purpose of the paper is to examine how the significant technological advances have affected the maneuver warfare and its basic principles. As method, description is used. Maneuver warfare will first be explained in the paper and then the main technological trends for the work.  A case study with a qualitative text analysis of the war in Iraq 2003 has been done. To finally in the case study to examine how the new technology is used.</p><p>The result of the study shows that the technological advances are of benefit to those who have the ability to utilize the new technology. But it takes a long time to coordinate the new technologies in a holistic functioning concept. The evolution of technology generates greater ability to apply the maneuver warfare basic principles.</p>
12

Teknikutvecklingens påverkan på manöverkrigföringen

Lindqvist, Christoffer January 2009 (has links)
Sedan 1980 talet har det skett en ansenlig utveckling utav tekniken fram till nutid. Utvecklingen skulle nästintill kunna liknas vid en revolution enligt många. Detta innebär att krigföringens grundprinciper och sättet att föra krig på kommer att påverkas av teknikutvecklingen på ett eller annat sätt. Författaren är intresserad av att se hur denna snabba utveckling har påverkat manöverkringföringen. Syftet med uppsatsen är sålunda att undersöka hur den påtagliga teknikutvecklingen har påverkat manöverkrigföringen och dess grundprinciper. Som metod används deskription. Först har manöverkrigföringen förklarats och därefter de viktigaste tekniska trenderna för arbetet. En fallstudie tillsammans med en kvalitativ textanalys görs på Irakkriget 2003. Detta att slutligen i fallstudien undersöka hur den nya tekniken använts. Slutsatsen i uppsatsen påvisar att teknikutvecklingen innebär fördelar för de som har förmågan att nyttja den nya tekniken. Men att det tar lång tid att samordna ny teknik i ett helhetsfungerande koncept. Teknikutvecklingen genererar bättre förutsättningar för att tillämpa manöverkrigföringens grundprinciper. / A considerable development of technology has been taken place since 1980s until today. The development could almost be likened to a revolution. This means that the basic principles of warfare and the means to wage war on will be affected by the development in one way or another. The author is interested to see how this rapid development has affected the maneuver warfare. The purpose of the paper is to examine how the significant technological advances have affected the maneuver warfare and its basic principles. As method, description is used. Maneuver warfare will first be explained in the paper and then the main technological trends for the work.  A case study with a qualitative text analysis of the war in Iraq 2003 has been done. To finally in the case study to examine how the new technology is used. The result of the study shows that the technological advances are of benefit to those who have the ability to utilize the new technology. But it takes a long time to coordinate the new technologies in a holistic functioning concept. The evolution of technology generates greater ability to apply the maneuver warfare basic principles.
13

Modeling the interaction between passenger cars and trucks

Jenkins, Jacqueline Marie 15 November 2004 (has links)
The topic of this dissertation was the use of distributed computing to improve the modeling of the interaction between passenger cars and trucks. The two main focus areas were the development of a methodology to combine microscopic traffic simulation programs with driving simulator programs, and the application of a prototype distributed traffic simulation to study the impact of the length of an impeding vehicle on passing behavior. The methodology was motivated by the need to provide an easier way to create calibrated traffic flows in driving simulations and to capture vehicle behavior within microscopic traffic simulations. The original design for the prototype was to establish a two-way, real time exchange of vehicle data, however problems were encountered that imposed limitations on its development and use. The passing study was motivated by the possible changes in federal truck size and weight regulations and the current inconsistency between the passing sight distance criteria for the design of two lane highways and the marking of no-passing zones. Test drivers made passing maneuvers around impeding vehicles that differed in length and speed. The main effects of the impeding vehicle length were found to be significant for the time and distance in the left lane, and the start and end gap distances. Passing equations were formulated based on the mechanics of the passing maneuver and included behavior variables for calibration. Through a sensitivity analysis, it was shown that increases in vehicle speeds, vehicle length, and gap distance increased the distance traveled in the left lane, while increases in the speed difference and speed gain decreased the distance traveled in the left lane. The passing equations were calibrated using the current AASHTO values and used to predict the impact of increased vehicle lengths on the time and distance in the left lane. The passing equations are valuable for evaluating passing sight distance criteria and observed passing behavior.
14

Orbit design and estimation for surveillance missions using genetic algorithms

Abdelkhalik, Osama Mohamed Omar 12 April 2006 (has links)
The problem of observing a given set of Earth target sites within an assigned time frame is examined. Attention is given mainly to visiting these sites as sub-satellite nadir points. Solutions to this problem in the literature require thrusters to continuously maneuver the satellite from one site to another. A natural solution is proposed. A natural solution is a gravitational orbit that enables the spacecraft to satisfy the mission requirements without maneuvering. Optimization of a penalty function is performed to find natural solutions for satellite orbit configurations. This penalty function depends on the mission objectives. Two mission objectives are considered: maximum observation time and maximum resolution. The penalty function poses multi minima and a genetic algorithm technique is used to solve this problem. In the case that there is no one orbit satisfying the mission requirements, a multi-orbit solution is proposed. In a multi-orbit solution, the set of target sites is split into two groups. Then the developed algorithm is used to search for a natural solution for each group. The satellite has to be maneuvered between the two solution orbits. Genetic algorithms are used to find the optimal orbit transfer between the two orbits using impulsive thrusters. A new formulation for solving the orbit maneuver problem using genetic algorithms is developed. The developed formulation searches for a mini mum fuel consumption maneuver and guarantees that the satellite will be transferred exactly to the final orbit even if the solution is non-optimal. The results obtained demonstrate the feasibility of finding natural solutions for many case studies. The problem of the design of suitable satellite constellation for Earth observing applications is addressed. Two cases are considered. The first is the remote sensing missions for a particular region with high frequency and small swath width. The second is the interferometry radar Earth observation missions. In satellite constellations orbit's design, a new set of compatible orbits, called the "Two-way orbits",whose ground track path is a closed-loop trajectory that intersects itself, in some points, with tangent intersections is introduced. Conditions are derived on the orbital elements such that these Two-way Orbits exist and satellites flying in these orbits pass the tangent intersection points at the same time. Finally, the recently proposed concept of observing a space object from onboard a spacecraft using a star tracker is considered. The measurements of the star tracker provide directions to the target in space and do not provide range measurements. Estimation for the orbit of the target space object using the measurements of the star tracker is developed. An observability analysis is performed to derive conditions on the observability of the system states. The Gaussian Least Squares Differential Correction Technique is implemented. The results obtained demonstrate the feasibility of using the measurements of the star tracker to get a good estimate for the target orbit within a period of measurements ranging from about 20 percent to 50 percent of the orbital period depending on the two orbits.
15

Body positions effects on systolic and diastolic blood pressure during the valsalva maneuver /

Brissette, Janet M. London, Janice B. January 1986 (has links)
Thesis (M.S.)--University of Michigan, 1986. / "A research report submitted in partial fulfillment of the requirements for the degree ..."
16

Effects of selected body positions on diastolic blood pressure and heart rate during the Valsalva maneuver a research report submitted in partial fulfillment ... /

Clavijo E., Judith. January 1987 (has links)
Thesis (M.S.)--University of Michigan, 1987.
17

Body positions effects on systolic and diastolic blood pressure during the valsalva maneuver /

Brissette, Janet M. London, Janice B. January 1986 (has links)
Thesis (M.S.)--University of Michigan, 1986. / "A research report submitted in partial fulfillment of the requirements for the degree ..."
18

Effects of bodily position on the systolic blood pressure response to Valsalvas maneuver

Curtin, Colleen. Reick, Kay. January 1900 (has links)
Thesis (M.S.)--University of Michigan, 1967.
19

Effects of selected body positions on diastolic blood pressure and heart rate during the Valsalva maneuver a research report submitted in partial fulfillment ... /

Clavijo E., Judith. January 1987 (has links)
Thesis (M.S.)--University of Michigan, 1987.
20

Effects of bodily position on the systolic blood pressure response to Valsalvas maneuver

Curtin, Colleen. Reick, Kay. January 1900 (has links)
Thesis (M.S.)--University of Michigan, 1967.

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