Дисертації з теми "Military modeling"
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1
Kaptan, Varol. "MODELING AUTONOMOUS AGENTS IN MILITARY SIMULATIONS." Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3825.
Повний текст джерелаАнотація:
Simulation is an important tool for prediction and assessment of the behavior of complex systems and situations. The importance of simulation has increased tremendously during the last few decades, mainly because the rapid pace of development in the field of electronics has turned the computer from a costly and obscure piece of equipment to a cheap ubiquitous tool which is now an integral part of our daily lives. While such technological improvements make it easier to analyze well-understood deterministic systems, increase in speed and storage capacity alone are not enough when simulating situations where human beings and their behavior are an integral part of the system being studied. The problem with simulation of intelligent entities is that intelligence is still not well understood and it seems that the field of Artificial Intelligence (AI) has a long way to go before we get computers to think like humans. Behavior-based agent modeling has been proposed in mid-80's as one of the alternatives to the classical AI approach. While used mainly for the control of specialized robotic vehicles with very specific sensory capabilities and limited intelligence, we believe that a behavior-based approach to modeling generic autonomous agents in complex environments can provide promising results. To this end, we are investigating a behavior-based model for controlling groups of collaborating and competing agents in a geographic terrain. In this thesis, we are focusing on scenarios of military nature, where agents can move within the environment and adversaries can eliminate each other through use of weapons. Different aspects of agent behavior like navigation to a goal or staying in group formation, are implemented by distinct behavior modules and the final observed behavior for each agent is an emergent property of the combination of simple behaviors and their interaction with the environment. Our experiments show that while such an approach is quite efficient in terms of computational power, it has some major drawbacks. One of the problems is that reactive behavior-based navigation algorithms are not well suited for environments with complex mobility constraints where they tend to perform much worse than proper path planning. This problem represents an important research question, especially when it is considered that most of the modern military conflicts and operations occur in urban environments. One of the contributions of this thesis is a novel approach to reactive navigation where goals and terrain information are fused based on the idea of transforming a terrain with obstacles into a virtual obstacle-free terrain. Experimental results show that our approach can successfully combine the low run-time computational complexity of reactive methods with the high success rates of classical path planning. Another interesting research problem is how to deal with the unpredictable nature of emergent behavior. It is not uncommon to have situations where an outcome diverges significantly from the intended behavior of the agents due to highly complex nonlinear interactions with other agents or the environment itself. Chances of devising a formal way to predict and avoid such abnormalities are slim at best, mostly because such complex systems tend to be be chaotic in nature. Instead, we focus on detection of deviations through tracking group behavior which is a key component of the total situation awareness capability required by modern technology-oriented and network-centric warfare. We have designed a simple and efficient clustering algorithm for tracking of groups of agent suitable for both spatial and behavioral domain. We also show how to detect certain events of interest based on a temporal analysis of the evolution of discovered clusters.Ph.D.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Computer Science
2
Muehl, Timothy John. "Modeling civilians and the civil-military interactions." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA288646.
Повний текст джерела
3
VILLARMOSA, ALEXANDRE DE MENEZES. "COMPUTATIONAL MODELING AGENTS BASED ON MILITARY DOCTRINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=25293@1.
Повний текст джерелаАнотація:
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRODesde o início de do século XIX, simulações de combate são utilizadas em treinamentos militares. Para que um treinamento ocorra de forma confiável é necessário envolver uma grande quantidade de militares nos adestramentos. No final de 1940, a ideia de agentes computacionais em inteligência artificial se mostrou uma excelente ferramenta, contribuindo para reduzir esta quantidade de pessoas envolvidas nas simulações de combate. Agentes capazes de perceber o ambiente em que estão inseridos e tomar decisões, agindo sobre ele, seguindo um conjunto de regras podem representar o comportamento de um soldado. Agentes inseridos numa simulação militar devem então, perceber o campo de batalha e tomar uma série de ações com base em uma doutrina militar. Logo, o objetivo deste trabalho é apresentar, através da modelagem de agentes computacionais uma definição do comportamento destes baseados na doutrina militar, para que estes agentes possam substituir parte dos militares evolvidos em uma simulação de combate, sem afetar a confiabilidade desta. Além de tornar os sistemas de simulação mais eficientes reduzindo a quantidade de militares necessária para a sua correta aplicação, este trabalho também ajuda a verificar a consistência lógica das ações descritas nos manuais doutrinários.
Since the beginning of nineteenth century combat simulations are used in military training. It s necessary to involve lots of military to these trainings occur reliably. In the late 1940s the idea of computational agents was developed in artificial intelligence and showed as an excellent tool to reduce the amount of personnel involved in combat simulations. Agents perceive the environment where they are inserted and take actions upon it following a set of rules. That reminds the behavior of a soldier. A soldier, or a group of then, perceive the battlefield and take a series of actions based on military doctrine. Therefore, the scope of this work is to present a viable way to define the behavior of computational agents based on military doctrine, so that they can replace some of the personnel involved in a combat simulation without affecting the reliability of the training in course. In addition making more efficient simulation systems, reducing the amount of required military for its proper implementation, can also help to check the logical consistency of the actions planned in the doctrinal manuals.
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Coombs, Aaron. "Modeling Attrition in a Military Selection Context." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/100781.
Повний текст джерелаАнотація:
Attrition, employee turnover, self-selection, and withdrawal all refer to an employee’s exit from an organization, or from an organization’s recruitment or selection process. When individuals with the desired knowledge, skills, abilities, and other qualities (KSAOs) attrit, it represents lost productivity to an organization (Barrick & Zimmerman, 2009). Therefore, organizations should seek a selection program that screens out unwanted characteristics while minimizing the voluntary withdrawal, or quitting, of those who would be a good organizational fit. A military selection context amplifies these two aims because of the limited number of qualified individuals relative to the organization’s personnel needs, and because of the high potential cost of a bad hire. However, there are few studies of attrition during a selection process, and even fewer in a military context that combines physical, cognitive, and personality components as relevant performance dimensions.
The purpose of the study was to model attrition from a military special operations selection through training program to determine what combination of physical abilities, cognitive abilities, and personality scales best predicts success. The study examined archival data from 748 candidate records spanning eight different classes during 2019. Secondary purposes of the study included comparing differences in attrition from the first week of the program to the remaining seven weeks, and comparing the predictive validity of a personality trait profile model to a model using personality scales T-scores. In conducting the analysis and modeling, exploratory factor analysis was conducted on the sample Jackson Personality Inventory-Revised (JPI-R) personality scales, finding both similarities and differences with previous study samples (Detwiler & Ramanaiah, 1996; Paunonen & Jackson, 1996).
The result of the study was a logit prediction model with a ROC AUC of .784, and an F1 score of .69, that incorporated three physical predictors, performance IQ, and three personality variables: JPI-R T-score for sociability, and two composites created from the factor analysis—a Conscientiousness Composite and an Openness Composite (negative relationship with candidate success). Models for week 1 attrition and attrition from weeks 2-8 differed from the 8-week attrition model, and from each other in the significance and the importance of the personality variables and of cognitive abilities. Physical predictors: run score, pushups score, and sit-ups score, were significant and strong predictors of success for each of the time periods. Verbal IQ was not significant for any time period, while performance IQ was significant in predicting 8-week success, and for success during the week 2-8 time period. Personality predictors varied the most by timeframe, although some component of Conscientiousness predicted strongly for each timeframe. Whereas Openness-related facets predicted for 8-week success and success from week 1 with a negative relationship, Openness factors were non-significant in weeks 2-8. In contrast, Anxiety, a related sub-facet of Neuroticism, predicted moderately (negative relationship) for success from weeks 2-8, but was non-significant for week 1 and for the 8-week program.
Unexpected findings included the sample’s different factor structure on the JPI-R, the dominance of the physical predictors in all models, and the strength of personality predictors relative to cognitive abilities. Implications for military and similar types of selection contexts, where selection through training includes a significant physical component, are discussed.M.S.
The study analyzed attrition from a military special operations selection program to determine what combination of individual differences measured before the program best predicted attrition during the program. The individual differences measured prior to the program were physical abilities, cognitive abilities, and personality. Archival data from 748 candidate records spanning eight different classes during 2019 was analyzed. Attrition is the departure of an individual from an organization, or from a hiring process. This study dealt with attrition from a hiring, or personnel selection process, which is less commonly studied than attrition from within an organization. Secondary purposes of the study included how attrition from the first week of the program differed from the remaining seven weeks, and determining if a specific broad personality profile best predicted attrition. The study found additional results that were not anticipated, specifically, that the military sample differed meaningfully on important dimensions of the Jackson Personality Inventory-Revised (JPI-R) personality scales, in comparison with previous study samples (Detwiler & Ramanaiah, 1996; Paunonen & Jackson, 1996). The practical result of the study was a mathematical prediction model that incorporated a candidate’s scores on pushups, sit-ups, 2-mile run, performance IQ, and three personality variables, and calculates a candidates’ probability of success. The three personality variables that predicted success were scores for sociability, and two composites—a Conscientiousness Composite and an Openness Composite. Mathematical models for week 1 attrition and attrition from weeks 2-8 differed from the 8-week attrition model, and from each other, suggesting that attrition during different timeframes is due to different reasons. Physical predictors: 2 mile run score, pushups score, and sit-ups score, were strong predictors of success for each of the time periods. Verbal IQ did not predict for any time period, while performance IQ predicted 8-week success, and success during the week 2-8 time period. Personality predictors varied the most by timeframe, although a component of Conscientiousness predicted strongly for each timeframe. Openness-related personality facets predicted for 8-week success and success from week 1 with a negative relationship. In contrast, Anxiety, a related sub-facet of Neuroticism, predicted moderately (negative relationship) for success only from weeks 2-8. Unexpected findings included the military sample’s different factor structure on the JPI-R, the dominance of the physical predictors in all models, and the strength of personality predictors relative to cognitive abilities. Implications for military and similar types of selection contexts, where selection through training includes a significant physical component, such as police or firefighters, are discussed.
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Anderson, Colin M. "Generalized weapon effectiveness modeling." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FAnderson.pdf.
Повний текст джерела
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Dickie, Alistair James. "Modeling robot swarms using agent-based simulation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Jun%5FDickie.pdf.
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Hall, Andrew O. "Simulating and optimizing military manpower modeling and mountain range options /." College Park, Md.: University of Maryland, 2009. http://hdl.handle.net/1903/9299.
Повний текст джерелаАнотація:
Thesis (Ph . D.) -- University of Maryland, College Park, 2009.Thesis research directed by: .University of Maryland (College Park, Md.) College of Business and Management . Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Saltmarsh, Elizabeth. "A modeling trade-off forecasting environment for military aircraft sustainment." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53587.
Повний текст джерелаАнотація:
One of the overarching goals for military aircraft sustainment is to keep a high proportion of aircraft available despite the need for maintenance. Traditional solutions to this problem require conservative resource estimates, but this is costly. In recent years an overall paradigm shift towards affordability has created pressure to find other options for achieving high values of fleet level metrics. Past efforts at increasing affordability have had mixed success, and as a result such strategies need to be tested early on in the lifetime of a product, ideally before the product is ever fielded.
In order to provide the ability to evaluate the effects of sustainment decisions such as different maintenance paradigms and cost goals, this thesis develops a sustainment modeling environment, known as Sustain-ME, to facilitate open analysis based on the best information available. The goal of creating Sustain-ME is to allow decision makers to define a sustainment scenario and compare different decisions of interest on a common basis. Sustain-ME is a discrete event simulation, which means it efficiently provides a reasonable prediction of operational behavior. This thesis describes the information used to construct Sutain-ME, including the assumptions made for many of the parameters of the modeled sustainment process. It next verifies the behavior of the different elements that make up the sustainment model including operations, maintenance, maintenance paradigms, and the supply chain. Finally a methodology for using SustainME is defined and a demonstration of the types of studies Sustain-ME was built to perform is shown. The demonstration compares three different maintenance paradigms: reactive maintenance, condition based maintenance, and a novel CBM paradigm known as CBM-MiMOSA.
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Jungkunz, Patrick. "Modeling human visual perception for target detection in military simulations." Monterey, Calif. : Naval Postgraduate School, 2009. http://handle.dtic.mil/100.2/ADA501666.
Повний текст джерелаАнотація:
Dissertation (Ph.D. in Modeling, Virtual Environments and Simulation (MOVES))--Naval Postgraduate School, June 2009.Dissertation Advisor(s): Darken, Christian J. "June 2009." Description based on title screen as viewed on July 10, 2009. DTIC Identifiers: Human visual perception, visual attention, eye tracking, human behavior modeling, visual search, semantic relevance, relevance mapa. Author(s) subject terms: Human Visual Perception, Visual Attention, Eye Movements, Eye Tracking, Human Behavior Modeling, Target Detection, Visual Search, Semantic Relevance, Relevance Map. Includes bibliographical references (p. 145-149). Also available in print.
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Campbell, Benjamin W. "Supervised and Unsupervised Machine Learning Strategies for Modeling Military Alliances." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1558024695617708.
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Zellers, Eric M. "MAINFRAME: Military acquisition inspired framework for architectural modeling and evaluation." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54997.
Повний текст джерелаАнотація:
Military acquisition programs have long been criticized for the exponential growth in program costs required to generate modest improvements in capability. One of the most promising reform efforts to address this trend is the open system architecture initiative, which uses modular design principles and commercial interface standards as a means to reduce the cost and complexity of upgrading systems over time. While conceptually simple, this effort has proven to be exceptionally difficult to implement in practice. This difficulty stems, in large part, from the fact that open systems trade additional cost and risk in the early phases of development for the option to infuse technology at a later date, but the benefits provided by this option are inherently uncertain. Practical implementation therefore requires a decision support framework to determine when these uncertain, future benefits are worth the cost and risk assumed in the present. The objective of this research is to address this gap by developing a method to measure the expected costs, benefits and risks associated with open systems. This work is predicated on three assumptions: (1) the purpose of future technology infusions is to keep pace with the uncertain evolution of operational requirements, (2) successful designs must justify how future upgrades will be used to satisfy these requirements, and (3) program managers retain the flexibility to adapt prior decisions as new information is made available over time. The analytical method developed in this work is then applied to an example scenario for an aerial Intelligence, Surveillance, and Reconnaissance platform with the potential to upgrade its sensor suite in future increments. Final results demonstrate that the relative advantages and drawbacks between open and integrated system architectures can be presented in the context of a cost-effectiveness framework that is currently used by acquisition professionals to manage complex design decisions.
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Foong, Yew Chong. "Airlift operations modeling using Discrete Event Simulation (DES)." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FFoong.pdf.
Повний текст джерелаАнотація:
Thesis (M.S. in Modeling, Virtual Environments, and Simulation (MOVES))--Naval Postgraduate School, December 2009.Thesis Advisor(s): Buss, Arnold. Second Reader: Meyer, David. "December 2009." Description based on title screen as viewed on January 28, 2010. Author(s) subject terms: Discrete Event Simulation, airlift operation. Includes bibliographical references (p. 145-147). Also available in print.
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Pugh, Ginger E. "Assessing the hydrologic impacts of military maneuvers." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/15677.
Повний текст джерелаАнотація:
Master of ScienceDepartment of Biological and Agricultural Engineering
Stacy Hutchinson
Military land management is vital to the future health and usability of maneuver training areas. As land disturbance increases, runoff from the area also increases and may create significant erosion potential. Determining the relationship between what is safe training versus what is harmful to the environment can be done by determining runoff potential at different disturbance percentages given different training intensities. Various studies have shown that soil density, soil structure, plant biodiversity, animal biodiversity, and many other essential ecosystem factors are greatly damaged by continuous training. These ecosystem factors influence runoff amounts and likewise erosion potential in that area. The primary factor examined in this study was the Curve Number (CN). Since military procedures do not have predefined CNs, representative CNs were created based off of CNs for agricultural use and supplemental research about training impacts on the land. Training intensity was broken into four classes: undisturbed, light use, moderate use, and heavy use. Five sample watersheds on Fort Riley were used as replications for the study. Disturbance intensity indexes were broken into 10% increments, and changes in runoff amount and peak rate modeled with TR-55. Statistical analysis was done comparing watersheds, training intensities and disturbance percentages for different storm magnitudes to assess statistically significance of changes in runoff amount and peak rate. This analysis showed that runoff amount and rate were both significantly impacted at every 10% increase on disturbance percentage. Results also showed that at the lower disturbance percentage (less than 30%), runoff amount and rate were not significantly impacted by training use classes. From this it can be seen that even with very little training done to the land increased erosion can be expected.
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McDonald, Alan Leo. "Gulf Regional Airspace Strategic Initiative Modeling Using Discrete Event Simulation." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/76868.
Повний текст джерелаАнотація:
The Gulf Regional Airspace Strategic Initiative (GRASI) is an effort to involve stakeholders affected by future changes in the airspace and military installations in the Northwest Florida Panhandle in creating a compromise that equally protects each stakeholder's airspace and airfield resources now and into the future. As part of this effort, the Gulf Regional Airspace Strategic Initiative ExtendSim discrete event model was developed, aiming to expand on the capabilities of existing modeling tools used for GRASI by creating higher fidelity estimates on transit times along airspace paths, and by introducing airport models. Creating additional modeling capabilities makes the model a more effective tool for evaluating alternatives put forth by military and civilian stakeholders.
The GRASI ExtendSim model was used to evaluate two scenarios, and found a slight, but significant change in flying time by military aircraft. This model creates a framework from which future models can be developed for the GRASI effort.Master of Science
15
Agarwal, Saurabh. "Modeling and performance estimation for airborne minefield detection system." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Agarwal_09007dcc804fa37e.pdf.
Повний текст джерелаАнотація:
Thesis (M.S.)--University of Missouri--Rolla, 2007.Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 13, 2008) Includes bibliographical references (p. 108-113).
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Ecklund, Marshall V. McNerney Michael A. "Personnel recovery operations for Special Operations Forces in Urban Environments : modeling successful overt and clandestine methods of recovery /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FEcklund%5FMcNerney.pdf.
Повний текст джерела
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Pellegrino, Stephen C. "United States Marine Corps Military Occupational Specialty (MOS) assignment modeling using augmentation probabilities." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA309852.
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Corbett, Jeffrey C. "Military manpower planning : optimization modeling for the Army Officer Accession/Branch Detail program /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA304980.
Повний текст джерелаАнотація:
Thesis (M.S. in Operations Research) Naval Postgraduate School, September 1995.Thesis advisor(s): James R. Wood. "September 1995." Includes bibliographical references (p. 83-84). Also available online.
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Hodot, Romain. "Modeling and test of loop heat pipes for civil and military avionic applications." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0132.
Повний текст джерелаАнотація:
Dans les années à venir, l’industrie de l’aéronautique doit améliorer le contrôle thermique des composants et modules hautement intégrés. Les approches de refroidissement standard, utilisant l’air forcé ne sont plus utilisables. Il est donc nécessaire de développer de nouvelles technologies capables d’offrir des solutions compatibles avec ces nouvelles problématiques. Une revue bibliographique approfondie est présentée pour montrer les solutions existantes pour l’avionique. Les systèmes à changement de phase, tels que les boucles diphasiques capillaires (LHPs), sont très attractifs puisqu’ils peuvent être utilisés pour transporter la chaleur vers une grande surface d’un radiateur qui dissipera la chaleur vers le milieu ambiant. Une première famille de LHP, conçue et réalisée par la compagnie Atherm, et remplie avec du méthanol, est décrite. Deux autres familles de LHP sont également présentées. La première a été réalisée par la société ATHERM et a un condenseur et des lignes de transports modifiés, afin d’être intégrée sur une carte électronique existante. La deuxième famille, a été conçue et réalisée par l’Institut of Thermal Physics (ITP), sur la base de spécifications similaires. Un banc d’essai expérimental est conçu et réalisé pour tester ces systèmes. Les effets de la charge en fluide, baïonnette, et mèche secondaire, sont observés. Des tests d’orientation et d’accélération sont réalisés sur des LHPs intégrées dans un rack aéronautique. Même une certaine sensibilité aux orientations et accélérations est observée, les LHPs fonctionnement toujours jusqu’à l’accélération maximale testée de 6 G. Un modèle stationnaire d’une boucle diphasique basé sur une approche à plusieurs échelles est développé. Plusieurs niveaux de complexité et de précision peuvent être sélectionnés pour le modèle des composants individuels de la boucle, allant du modèle nodal au modèle 3D. Le modèle est validé avec les données expérimentales. Un bon accord entre les simulations numériques et les résultats expérimentaux est obtenu. Les résultats numériques montrent que la charge de fluide dans le réservoir affecte le comportement thermique de la LHP en modifiant la répartition des flux de chaleurs. Des gradients de température importants sont observés dans la plaque du condenseur, et un nouveau tracé de la ligne condenseur est proposé. Plusieurs modifications de l’évaporateur sont analysées. La diminution la plus importante de la résistance thermique de l’évaporateur est obtenue par une bonne disposition des rainures axiales de la mèche, associée à une semelle optimisée, ou à des rainures radialesIn the coming years, the avionics industry will have to improve the thermal control of both existing and emerging highly integrated electronic components and modules. The standard cooling approaches using forced air are no longer applicable. It is necessary to develop new technologies being able to offer solutions compatible with those new problematic. An extensive literature review is presented to show the existing cooling solutions for avionics. Two-phase passive systems, such as LHPs are very attractive as they may be used as heat spreader, associated with a classical heat sink to dissipate the heat. A first family of LHP, designed and manufactured by the ATHERM Company and filled with methanol as the working fluid is described. Two other LHP families are also presented. The first one was manufactured by ATHERM and has modified condenser and transport line shapes, in order to be integrated into an existing electronic card. The second one was manufactured and designed by the Institute of Thermal Physics, on the same specification basis. An experimental setup is designed and built to test these LHPs. The effects of fluid fill charge, bayonet and secondary wick are observed. Orientation and acceleration tests are conducted on LHPs integrated within an avionic rack. Even if the LHPs exhibited sensitivity to orientation and acceleration, no failure of the LHP was observed up to the maximum applied acceleration (6 G). A steady state model of LHP based on a multi-level approach is developed. Various levels of complexity and precision can be selected for the model of the individual component, going from the nodal to the 3D model. The model is validated with experimental data from the laboratory tests. A good agreement is achieved between the experimental and the numerical data. The numerical results show that the fluid fill charge within the reservoir affects the thermal behavior of the LHP, by modifying the heat flux distribution. High temperature gradients are highlighted in the condenser plate and a redesign of its shape is proposed. Various modifications of the evaporator design are considered. The most important decrease of the evaporator thermal resistance is brought by a good disposition of the axial vapor grooves associated with an optimized saddle shape or radial vapor grooves
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McNerney, Michael A., and Marshall V. Ecklund. "Personnel recovery operations for special operations forces in urban environments modeling successful overt and clandestine methods of recovery." Thesis, Monterey, California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/1159.
Повний текст джерелаАнотація:
Approved for public release; distribution is unlimitedThis thesis presents two prescriptive models for approaching challenges to special operations forces with regard to personnel recovery in an urban environment. It begins by developing a model for overt recovery methods, using McRaven's model of Special Operations as the foundation. This model is then tested against three different case studies from operations in Mogadishu, Somalia in 1993. The original six principles proposed by McRaven are complimented with four newly-prescribed principles that account for the interactions of the isolated personnel. Following this analysis, a nonconventional assisted recovery model is presented for clandestine personnel recovery methods. This model borrows the relative superiority concept from McRaven's theory, but proposes six different principles. This model is evaluated using three case studies from the World War II era through Operation IRAQI FREEDOM. These cases support the idea that while the urban operational environment may vary across time and space, the principles supporting successful personnel recovery operations endure.
Major, United States Army
Major, United States Air Force
21
Tajti, Norbert. "Enhancing Hungarian Special Forces through transformation--the shift to Special Operations Forces." Thesis, Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Jun/10Jun%5FTajti.pdf.
Повний текст джерелаАнотація:
Thesis (M.S. in Defense Analysis)--Naval Postgraduate School, June 2010.Thesis Advisor(s): Lee. Doowan ; Second Reader: Greenshields, Brian H. ; Third Reader: Porkolab, Imre. "June 2010." Description based on title screen as viewed on July 14, 2010. Author(s) subject terms: Special Forces, Special Operations Forces, Hungary, organizational design, special operations, NATO. Includes bibliographical references (p. 103-108). Also available in print.
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Triantopoulos, Dimitris. "Modeling of a jet fuel spill in the groundwater at the Massachusetts Military Reservation." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/41366.
Повний текст джерелаАнотація:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1996.Includes bibliographical references (leaves 64-65).
by Dimitris Triantopoulos.
M.Eng.
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Choi, Julia. "The study of biological interactions using water quality modeling : Massachusetts Military Reservation, Ashumet Pond." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42623.
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Schiantarelli, Harry Thornberry. "Performance analysis of high frequency single-site-location antenna arrays using numerical electromagnetic modeling." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA240868.
Повний текст джерелаАнотація:
Thesis (M.S. in Electrical Engineering and M.S. in Systems Engineering (Electronic Warfare))--Naval Postgraduate School, September 1990.Thesis Advisor(s): Adler, Richard W. Second Reader: Jauregui, Stephen. "September 1990." Description based on title screen as viewed on December 18, 2009. DTIC Descriptor(s): Electronic Support Measures, Direction Finding, Propagation, Warfare, Models, Performance Tests, Paths, Theses, Reflection, Vertical Orientation, Electromagnetic Radiation, Coordinates, Communication And Radio Systems, Radio Waves, Antenna Arrays, Law Enforcement, Ionospheric Propagation, Triangulation, Mathematical Models, Ionosphere. Author(s) subject terms: Single-Sight-Location, Direction Finding, High Frequency, Numerical Electromagnetics Code. Includes bibliographical references (p. 116). Also available in print.
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Boner, Kevin Eugene 1961. "Command control system modeling for evaluating readiness." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276835.
Повний текст джерелаАнотація:
The objective of this research was to develop a framework whereby the United States Naval Surface Forces could be provided with better information to determine their overall readiness capability. This study utilized the new Readiness Assessment and Reporting Standard (S9410-AN-STD-010/AEGIS) as a guide. Also, a System Design Methodology was used as a tool to develop mathematical models for generating the readiness capability for a particular system. The specific system selected for demonstrating this framework was the Gun Weapon System (GWS) being developed for the Arleigh Burke DDG-51 Class Destroyer.
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Watts, Krista L. "Modeling the use of the AJCN in a tactical environment." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FWatts.pdf.
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Schliemann, Bernd F. "Analysis and modeling of the initiative tenet of current army operations doctrine." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/25091.
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Odom, Richard Hoyt Jr. "A Multi-scale Analysis of the Potential Impacts of Rapid Climate Change on Forest Lands Managed by the Department of Defense in the US." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/98839.
Повний текст джерелаАнотація:
Based on current projections from global climate models (GCM's), regional climates in the coterminous U.S. are expected to become warmer and either wetter or drier over the next century depending on the GCM used to make projections. Forest communities and the species that comprise them are likely to respond to a changing climate in a number of different ways based on environmental tolerances that have evolved over the past several thousand years. If, as many scientists believe, global warming is occurring at a rate that is unique in the recent history of the Earth, many species and plant communities are likely to be stressed by temperature and moisture conditions unlike those in which they have evolved. Concurrently, some species and communities in boreal and cold temperate biomes may benefit from warmer temperatures and greater CO2 availability resulting in more successful reproduction, higher growth rates and increased competitiveness. Plant species and communities are likely to respond differently to climate change on different landscapes and at different scales, and therefore a multi-scale, ecoregional approach will be required to understand potential impacts of climate change on species, communities and entire ecosystems. This study is part of a broader effort by the U.S. Department of Defense to assess the vulnerability of military lands to rapid climate change and develop mitigation strategies to cope with projected impacts to natural systems, resource management activities and military missions.
The Holdridge Life Zone system was used to model the geographic extent of present and future climatic envelopes that influence the distribution of forest biomes and tree species in the coterminous U.S. The Holdridge system integrates mean annual temperature, mean annual precipitation and mean annual potential evapotranspiration to define bioclimatic life zones that are strongly correlated with the spatial distribution of major forest cover types and tree species distributions. Climate projections were based on an ensemble of 16 GCM's and three future greenhouse gas emissions scenarios (low-B1, moderate-A1B and high-A2). Changes in the extent and location of Holdridge life zones over approximately 80 years were analyzed and results interpreted in terms of potential impacts to forest tree species and major forest cover types. The magnitude of change from historic conditions also was evaluated for 663 U.S. military installations to aid in the development of vulnerability metrics for Department of Defense facilities and to better understand potential climate trajectories for different regions of the country. Cluster analysis was used to group installations on a regional basis and regional variation in projected climate conditions and assessed relative to important resource management issues at representative installations.
Forest cover was modeled at Ft. Drum, New York to illustrate potential changes in species composition and cover type distribution at a landscape scale under future climate change scenarios. Stand ages were estimated using data on site index trees available in the Forest Inventory and Analysis (FIA) database for New York. Ecological types were developed from large scale soil survey data (Natural Resource Conservation Service, Soil Survey Geographic Database, SSURGO) and stand-level forest inventory data available from the natural resources program at Ft. Drum. Stand age, ecological type, species life histories and soil properties were used to parameterize a stochastic forest landscape simulation model using the LANDIS-II application and project changes over 80 years under three future CO2 emissions scenarios. Results showed that there is potential for significant changes in the distribution of some tree species and forest cover types at Ft. Drum under the warmer climate conditions projected for the northeastern U.S. Cover types characterized by species at the northern end of their ranges (e.g., species associated with oak (Quercus rubra, Q. alba)-hickory (Carya cordiformis) forest) increased in abundance, especially on more xeric sites such as sand plains and convex landforms covered in coarse-textured glacial till. However, boreal and cool temperate species, such as sugar maple (Acer saccharum), yellow birch (Betula alleghaniensis), aspens (Populus tremuloides, P. grandidentata) and eastern hemlock (Tsuga canadensis) that are major current components of the northern hardwood-hemlock cover type therein, were projected to remain significant components of the Ft. Drum landscape late into the century on all but the most xeric sites. Overall, changes in species composition were less dramatic than expected at a landscape scale and highly sensitive to establishment probabilities related to specific site characteristics (e.g., soil texture and drainage). The lack of a strong climate response at Ft. Drum may be due to the presence of a number of widely distributed tree species with presumed large climatic tolerances and the relatively homogeneous biophysical conditions that exist within this landscape.Doctor of Philosophy
The Holdridge Life Zone system was used to model the geographic extent of present and future climates that influence the distribution of forest biomes and tree species in the coterminous U.S. The Holdridge system integrates mean annual temperature, mean annual precipitation and mean annual potential evapotranspiration to define bioclimatic life zones that are strongly correlated with the spatial distribution of major forest cover types and tree species distributions. Climate projections were based on an ensemble of 16 GCM’s and three future greenhouse gas emissions scenarios (low-B1, moderate-A1B and high-A2). Changes in the extent and location of Holdridge life zones over approximately 80 years were analyzed and results interpreted in terms of potential impacts to forest tree species and major forest cover types. The magnitude of change from historic conditions also was evaluated for 663 U.S. military installations to aid in the development of vulnerability metrics for Department of Defense facilities and to better understand potential climate trajectories for different regions of the country. Forest cover was modeled at Ft. Drum, New York to illustrate potential changes in species composition and cover type distribution at a landscape scale under future climate change scenarios. Results suggest that there is potential for significant changes in the distribution of some tree species and forest cover types at Ft. Drum over the next 50 to 100 years under warmer climate conditions projected for the northeastern U.S. Warm temperate tree species at the northern end of their ranges (e.g., oaks, hickories) increased in abundance, especially on more xeric sites such as sand plains and convex landforms covered in coarse-textured glacial till. However, boreal and cool temperate species, such as sugar maple, yellow birch, aspens and eastern hemlock were projected to remain significant components of the Ft. Drum landscape late into the century on all but the most xeric sites. Overall, changes in species composition were less dramatic than expected at a landscape scale and highly sensitive to establishment probabilities related to specific site characteristics (e.g., soil texture and drainage).
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Torgerson, Scott Robert. "Mathematically modeling the effects of low-level learning in combat simulations and war games." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/25097.
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Lin, Tina L. (Tina Li-Te). "Analysis of geologic parameters on recirculating well technology, using 3-D numerical modeling : Massachusetts Military Reservation, Cape Cod." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/45485.
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Fingerhut, Henry Alan. "A systems framework and modeling approach to predict and manage the mental health effects of a military conflict." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/103570.
Повний текст джерелаАнотація:
Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, Institute for Data, Systems, and Society, Technology and Policy Program, 2015.Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 155-160).
Combat-related Post-Traumatic Stress Disorder (PTSD) poses complex challenges for policymakers that systems analysis could help elucidate. True population prevalence and future clinical need are highly uncertain, because individuals' PTSD symptomatology may fluctuate in time. Though we increasingly measure policy outcomes, outcome metrics often address direct, short-term effects, so the impact on long-term prevalence is unclear. The PTSD burden involves a diverse set of actors across domains who independently make decisions based on incomplete information. Systems analysis can indicate how these local aspects of the PTSD burden jointly impact long-term prevalence and identify leverage points for PTSD mitigation. This thesis presents a systems framework and stochastic modeling approach to predict PTSD prevalence and clinical demand over the decades following the current Operations Enduring Freedom (OEF) and Iraqi Freedom (OIF). The system developed in this study incorporates the literature on PTSD symptom dynamics and social factors governing its recognition and treatment in order to identify the structure and dynamics of the PTSD burden. The simulation results indicate the extent to which PTSD is chronic, prevalent, and resistant to treatment. The best-case model predicts that 11-16% of OEF/OIF combat veterans will maintain a long-term need for PTSD services, and as many as 23% of OEF/OIF combat veterans will seek PTSD-related health care at least once in their lives. By controlling for symptom dynamics, model results account for a large component of the variation in empirically observed prevalence rates. Sensitivity and policy analyses show that care-seeking factors tend to have the most significant effect on long-term PTSD prevalence. Model limitations and assumptions are documented, particularly regarding symptom and care-seeking dynamics and parameter interactions, to provide the basis for future empirical and analytical work to elaborate systemic complexities underlying military mental health. The current study specifically addresses OEF/OIF combat-related PTSD, however this approach may be generalized to other populations and mental health concerns. This study has three main policymaking implications. First, study predictions regarding long-term PTSD prevalence and clinical demand can be used for clinical planning and resource allocation over time. Second, baseline model results indicate the long-term limits of current best practice PTSD mitigation efforts. Third, the study identifies effective policy levers by indicating the factors with the greatest direct impact on long-term PTSD prevalence.
by Henry Alan Fingerhut.
S.M. in Technology and Policy
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Childress, Cynthia. "THE IMPACT OF WAR ON MILITARY HOSPITAL PERFORMANCE: A STUDY OF ORGANIZATIONS’ RESPONSE TO AN ENVIRONMENTAL JOLT." VCU Scholars Compass, 2013. https://scholarscompass.vcu.edu/etd/3171.
Повний текст джерелаАнотація:
The prolonged wars in Iraq and Afghanistan have taken a toll on the United States as a whole and the United States military in particular. The primary aim of this research is to determine what impact the wars in Iraq and Afghanistan have had on the performance of military hospitals over the fiscal years 2001-2006. Specifically, what direct effect has the war in Iraq and Afghanistan had on the productivity and quality of military hospitals, and, do productivity and quality trends differ based on hospital characteristics? Since observations over multiple time periods are nested within hospitals, multilevel mixed effects regression and Poisson regression models are used to evaluate changes in productivity and quality while accounting for differences within hospitals. Using a contingency theory framework, this study fills the gap in looking at the impact of war on permanent military hospitals’ productivity and quality using nationally developed and implemented quality indicators (Agency for Healthcare Quality and Research Inpatient Quality Indicators and Patient Safety Indicators). Structural characteristics of the hospital, teaching status and branch of Armed Service influenced productivity and certain quality indicators. The structural components were not able to reliably predict differences in productivity and all quality indicators, but overseas hospitals and non-teaching hospitals were most likely to differ from major teaching hospitals. The wars in Iraq and Afghanistan, denoted by the variables for wounded discharges and deployed staff, were only partially related to the productivity of military hospitals. Only an increase in the percentage of wounded discharges was related to productivity of military hospitals, and none were related to the quality indicators. In essence, the war affected the workload and productivity of military hospitals, but it did not affect the quality provided in the hospitals, as measured by AHRQ inpatient and patient safety quality indicators. Structural characteristics account for more of the variation in quality among military hospitals than the impact of war within the timeframe studied.
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Comeaux, Aris J. "An exploratory study of pre-admission predictors of hardiness and retention for United States Military Academy cadets using regression modeling." Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/34647.
Повний текст джерелаАнотація:
Approved for public release; distribution is unlimitedThis study uses regression techniques on United States Military Academy (USMA) cadet/ candidate data in order to develop a hardiness-prediction model and explore retention during and after graduation from USMA. We created several data sets using 42 variables from three cohorts (N= 3,716) and analyzed them using regression techniques. Preliminary results showed high school type and the interaction between gender and parents education level as significant. Specifically, private religious high schools and male cadets with less-educated fathers are positive predictors of hardiness (R2 = 0.05). Model quality improved in subsequent regressions by identifying a target population. Among varsity football players (N= 149), less-educated mothers and liberal political views are negative predictors of hardiness while race and parents military service history (African Americans with fathers who served in the military) and prep school attendance are positive predictors of hardiness (R2 = 0.97). Logistic regression results suggest military, physical, and academic performance are positive predictors of USMA retention while hardiness-challenge, participation in varsity athletics, and less-educated fathers are negative predictors. Logistic regression results identified basic branch as the sole positive predictor of U.S. Army officer retention beyond a USMA graduates sixth year of active federal service. Infantry officers, followed by military police, armor and engineers, remain in service longer (medical corps and aviation branch officers excluded).
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Karl, Hendrickson K. "Development and Application of an Analyst Process Model for a Search Task Scenario." Wright State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401538470.
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Riva, Vanessa. "Groundwater modeling to predict plume migration and to design a well fence for a fuel spill at the Massachusetts Military Reservation." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/40166.
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Bernal, Iric Jacob. "Optimization of Processes with High Levels of Outcome Variability Factoring in Risk." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618826624327751.
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Сопілков, Максим Романович. "Система прогнозування виникнення збройних конфліктів за допомогою ймовірнісно-статистичних методів". Master's thesis, Київ, 2018. https://ela.kpi.ua/handle/123456789/23902.
Повний текст джерелаАнотація:
Магістерська дисертація: 111 с., 19 рис., 30 табл., 2 додатки, 27 джерел.
Об’єкт дослідження – прогнозування сучасних військових конфліктів за допомогою імовірнісно-статистичних методів.
Мета роботи – розробка та дослідження інтелектуальної системи прогнозування потенціального виникнення військового конфлікту у країнах світу , що дає можливість підготуватися до такої ситуації і, в деяких випадках, попередити її.
В роботі розглянуто і проаналізовано прогнозування виникнення сучасних військових (збройних) конфліктів, проаналізовані методи та алгоритми побудови байєсівських та нейронних мереж, їх використання у різноманітних галузях військового моделювання. Розроблено систему побудови прогнозу виникнення військового конфлікту у країні на основі використання методів побудови байєсівських та нейронних мереж.
Система побудови пронозу реалізована за допомогою мови програмування Java (Spring), JavaScript (Angular 2). Точність та правильність роботи системи показують результати наявної політичної ситуації у світі, які ми можемо з вами спостерігати за допомогою засобів масової інформації (ЗМІ).
Результати даної роботи рекомендується використовувати для передбачення виникнення військових збройних конфліктів, що допоможе попередити виникнення даного, або ж по можливості зменшити ризик його виникнення.Theme: “System of forecasting the emergence of armed conflicts via probability statistical methods”. Master’s thesis: 111 p., 19 fig., 30 tab., 2 appendices, 27 sources. The object of study - the prediction of modern military conflicts through bayesian and neural networks. The purpose of the work - research and development of intelligent system of forecasting the potential occurrence of military conflict in the world, which makes it possible to prepare for such situation and, in some cases, prevent it. In this work was reviewed and analyzed next problems: predicting the emergence of modern military (armed) conflict, was analyzed the methods and algorithms of bayesian and neural networks, their use in various fields of military simulation. Also was developed the system of forecasting the emergence of armed conflict in the country using constructing bayesian and neural networks methods. The forecasting system was implemented by using programming languages Java (Spring) and JavaScript (Angular 2). Precision and accuracy of the system shows the results of the political situation in the world which we can observe through the mass media (MSM) The results of this study are recommended for predicting the emergence of armed military conflict that will help prevent them, or as much as possible to reduce the risk of their occurrence.
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Hubeňák, Marian. "Návrh a implementace modelů efektů v simulačním systému OneSAF Testbed Baseline." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2009. http://www.nusl.cz/ntk/nusl-412819.
Повний текст джерелаАнотація:
This project deals with the modelling and the simulation, its basic characteristics as well as its respective branches. The majority of the project is aimed at modelling and simulation in military environment with a description of the asset in this area while considering different uses of these simulations. I also introduce the development of modelling and simulation in the army of Czech Republic. The project also deals with the constructive simulation and tries to bring out the OneSAF Testbed Baseline simulation system. At last, I propose some concepts of models for this particular simulation system - the model of psychological effects and the model of generating the rubble during the operations of the artillery.
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Meador, Douglas P. "Modeling Training Effects on Task Performance Using a Human Performance Taxonomy." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1229535534.
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Eliiyi, Ugur. "Discrete-time Stochastic Analysis Of Land Combat." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/759472/index.pdf.
Повний текст джерелаАнотація:
In this study, we present the implementation and experimental analysis of a modeling approach for analyzing tactical level land combat to generate information for weapon and ammunition planning. The discrete-time stochastic model (DSM), which can handle small and moderately large force levels, is based on single shot kill probabilities. Forces are assumed to be heterogeneous on both sides, and both directed and area fire types are modeled by means of combinatorial analysis. DSM considers overkills and can handle noncombat loss and engagement processes, discrete reinforcements, force combinations and divisions. In addition to experimenting with DSM, we estimate attrition rate coefficients used in Lanchester combat models, such that the two models will yield similar figures for force levels throughout the combat.
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Storms, Melissa. "Wives Left Behind: Factors that Impact Active Duty Wives' Psychological Well-being while Experiencing Deployment-Related Separation." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397426666.
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Christensen, Carsten Douglas. "An Agent-Based Decision Support Framework for sUAS Deployment in Small Infantry Units." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8525.
Повний текст джерелаАнотація:
Small unmanned aircraft systems (sUAS) will become a disruptive force on the modern battlefield. In recent years, sUAS size and cost have decreased while their capability has increased. They have forced a reconsideration of the air superiority paradigm held since the First World War. Perhaps their most attractive, and worrisome, feature is the huge range of combat roles that they might fulfill. The presence of sUAS on future battlefields is certain, but the role they will play and their impact on those battlefields are not. This work presents a decision support framework for sUAS deployment in small infantry units. The framework is designed to explore and evaluate multiple sUAS-small-unit deployment concepts' impact on small unit effectiveness in a combat scenario of interest. The framework helps decision makers identify high-level sUAS deployment principles for testing and validation in physical experiments before sUAS are implemented on the battlefield. The decision support framework comprises the following: 1) a definition of the sUAS-small-unit deployment concept design space and combat scenario, 2) an agent-based computer model for exploring sUAS deployment concepts, 3) a set of analysis tools for evaluating sUAS deployment impact on combat effectiveness, and 4) suggestions for synthesizing high-level sUAS deployment principles from the analysis. In this work, the decision support framework for sUAS-small-unit deployment is used to explore and evaluate the impact of deploying an infantry platoon with between one and nine unmanned aerial vehicles (UAV) operating in a reconnaissance role while executing one of several sUAS patrol pattern variants. In a scenario in which a defending platoon uses sUAS to intercept and aid in indirect fires targeting against a platoon of attacking infantry, the sUAS were shown to markedly improve the defending platoon's combat effectiveness. The framework is used to synthesize several key principles for sUAS deployment in the scenario. It shows that, when fewer UAVs are deployed, short-range sUAS patrols improve defender combat effectiveness. Conversely, when more UAVs are deployed, long-range sUAS patrols improve the defenders' ability to target attacking units with indirect fires, increasing the firepower concentrated against opponents. The analysis also shows that increasing the number of deployed UAVs improves the likelihood of defending warfighters surviving the engagement and the defenders' ability to detect and engage the attackers with indirect fires. Finally, the framework shows that sUAS can force alterations in attacker behavior, removing them from combat by non-violent, but highly effective, means.
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Malizard, Julien. "Dépenses militaires et croissance économique." Thesis, Montpellier 1, 2011. http://www.theses.fr/2011MON10057.
Повний текст джерелаАнотація:
Les dépenses militaires constituent un phénomène économique important puisque 1630 milliards de dollars sont affectés au secteur de la défense en 2010 au niveau mondial. Les économistes se sont alors intéressés aux conséquences économiques de telles dépenses. Pourtant depuis près de 40 ans, force est de constater qu'aucun consensus n'émerge de cette littérature. Une telle absence se traduit par des difficultés pour formuler des conclusions de politique économique adaptée. L'objet de cette thèse est alors de déterminer quelles pourraient être les causes de la diversité des résultats de la littérature passée. Nous proposons alors deux pistes expliquant ce phénomène: d'une part une diversité de modélisations ayant des hypothèses diamétralement opposées quant à l'impact de la défense sur la croissance et d'autre part l'existence de non-linéarité, de nature à modifier cet impact pour un même modèle.La thèse se compose alors de quatre chapitres. Dans le chapitre un, nous proposons une revue de littérature permettant de mettre en exergue les régularités, en termes de résultats, associées à chaque modèle théorique. Le chapitre deux constitue alors une vérification empirique, pour un échantillon donné de pays de l'OCDE, de la contingence des conclusions quant à l'utilisation de différentes modélisations. Notre stratégie empirique permet de considérer les modèles comme complémentaires plutôt qu'en concurrence. Dans le troisième chapitre, nous étudions les phénomènes de non-linéarité au travers d'une démarche et d'une méthode empirique originales. Nous montrons que la régression non-linéaire est préférable à la régression linéaire et qu'elle conduit à caractériser un effet asymétrique de la défense sur la croissance. Le dernier chapitre a pour but d'étudier plus précisément le cas de la France afin de confirmer, en termes de politique économique, la stratégie développée dans les chapitres précédentsMilitary spending constitutes an important economic phenomenon because in 2010, 1630b dollar are affected to the defense sector all around the world. Economists are interested in the economic consequences of such spending. However, since 40 years, one has to note that there is no consensus from this literature. This absence leads to difficulties to formulate relevant economic policy conclusions. The aim of this thesis is to determine what are the causes of the diversity of results in the past literature. Two ways are then considered: on the one hand, a diversity of models with hypothesis diametrically opposed concerning the impact of the defense sector on economic growth and on the other hand, non-linear behavior which may modify this impact for a same model.This dissertation contains four chapters. In the first one, we detail a literature review in order to draw the principal regularities in terms of results for each theoretical model. The chapter two constitutes an empirical verification of the contingency of results from different models, for a sample of OECD countries. Our empirical strategy leads to consider the complementary rather than the competition between models. In the third chapter, we examine the non-linear phenomenon with original steps and empirical method. We show that non-linear regression outperforms linear regression and characterizes asymmetric effects of the military spending on growth. The last chapter aims to analyze the case of France in order to confirm the usefulness of the strategy developed in past chapters for raising economic policy recommendations
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Liao, Wen-Jiao. "Physics-based radiometric signature modeling and detection algorithms of land mines using electro-optical sensors." Columbus, Ohio : Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc%5num=osu1064252075.
Повний текст джерелаАнотація:
Thesis (Ph. D.)--Ohio State University, 2003.Title from first page of PDF file. Document formatted into pages; contains xxii, 255 p. : ill. (some col.). Advisors: Joel T. Johnson and Brian A. Baertlein, Dept. of Electrical Engineering. Includes bibliographical references (p. 247-255).
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Orichel, Thomas. "Adaptive rules in emergent logistics (ARIEL) : an agent-based analysis environment to study adaptive route-finding in changing road-networks /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FOrichel.pdf.
Повний текст джерелаАнотація:
Thesis (M.S. in Modeling, Virtual Environments and Simulation and M.S. in Computer Science)--Naval Postgraduate School, June 2003."This thesis is done in cooperation with the MOVES Institute"--Cover. Thesis advisor(s): Eugene Paulo, John Hiles. Includes bibliographical references (p. 49). Also available online.
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Bertol, Frederico Licks. "Comando e controle no contexto da digitalização : um estudo com base em modelagem computacional." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/183283.
Повний текст джерелаАнотація:
Este trabalho propõe uma discussão em torno dos impactos da digitalização sobre sistemas militares de comando e controle. A hipótese central é que o emprego intensivo de tecnologias digitais está associado a um maior risco de sobrecarga informacional nesses sistemas. Isso se aplica em especial às forças militares que adotaram doutrinas de viés tecnocrático, como a guerra centrada em redes. No primeiro capítulo, discutimos o contexto no qual nosso tema de pesquisa se insere, fazendo uma breve retrospectiva do processo de digitalização e também definindo alguns conceitos-chave. No segundo capítulo, em formato de artigo, apresentamos o modelo computacional que foi desenvolvido para simular o funcionamento de um sistema de comando e controle sob a condição de sobrecarga informacional. O artigo também reúne uma revisão crítica das abordagens sobre comando e controle, com ênfase na literatura sobre guerra centrada em redes. O terceiro e último capítulo traz algumas conclusões sobre o emprego da modelagem computacional como metodologia de pesquisa e o estado atual do debate sobre guerra centrada e redes.This work proposes a discussion on the impacts of digitization over military command and control systems. The central hypothesis is that the intensive deployment of digital technologies is associated to a greater risk of informational overload in those systems. This applies especially to military forces that have adopted doctrines with a technocratic bias, such as the network-centric warfare. In the first chapter, we discuss the context that encompass our research topic, making a brief retrospective of the process of digitization and defining some key concepts. In the second chapter, in form of article, we present the computational model developed for simulating the operation of a command and control system under the condition of informational overload. The article also contains a critical review on the command and control approaches, with emphasis on the literature about network-centric warfare. The third and last chapter brings out some conclusions regarding the use of computational modeling as a research method and the current state of the debate on network-centric warfare.
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Juntunen, J. (Jouni). "Enhancing organizational ambidexterity of the Finnish Defence Forces’ supply chain management." Doctoral thesis, Oulun yliopisto, 2014. http://urn.fi/urn:isbn:9789526204901.
Повний текст джерелаАнотація:
Abstract Strategy is the use of combats to accomplish the goal of the war, but because each war differs in terms of its background and motives, creating a universal strategy for military purposes may not be possible. The military can have one peacetime sourcing strategy, but their wartime strategy is highly situation dependent. If resources are not available in wartime, there may be enormous losses. Resources must be secured through an efficient peacetime sourcing strategy, which demands a high level of organizational ambidexterity. The military in Finland are known collectively as the Finnish Defence Forces, although here we refer to the organization here in the singular as the FDF. The FDF is highly dependent on private transportation, but is also an important driver trainer and buyer of logistics services. Because a transportation system is central to society’s basic services, and its functionality is important for citizens, the private sector, securing vital functions of the nation and for emergency supply security. There is strong mutual dependency between the private transportation sector and the FDF, which makes for an interesting context in which to study also strategic partnerships. The articles included in this thesis consist of two quantitative data sets. The first empirical data set was gathered from the LSP members of the Finnish Transport and Logistics (460 acceptable responses, 17.7 per cent). The second data set was collected from the military, the security-related public sector and private industrial companies (149 acceptable responses, 18.01 per cent). The analyses include descriptive statistics and structural equation modeling. The purpose of this study is to reveal possible problems and offer insights into the cooperation between the private transportation sector and the FDF, and the development of organizational ambidexterity in the FDF’s supply chain management. From a game theory perspective, how the FDF enhance supply security is important because the private transportation sector is extremely important for the FDF and vice versa. Logistics strategy influences direct logistics costs, so the FDF has a lesson to learn from its own practices, concentrating on quality instead of direct cost reductions considerably reduces total logistics costs while improving domestic transportation resourcesTiivistelmä Strategia on taistelujen ohjausta sodan tavoitteiden saavuttamiseksi, mutta koska jokainen sota eroaa taustoiltaan ja motiiveiltaan, lienee universaalin strategian luominen sotilaallisiin tarkoituksiin mahdotonta. Armeijalla voi olla yksi rauhanajan hankintastrategia, mutta sota-ajan hankintastrategia on voimakkaasti olosuhteista riippuvainen. Sota-ajan resurssien saanti on kuitenkin pyrittävä turvaamaan jo rauhanajan hankintastrategialla, mikä vaatii korkeaa organisaatiollista kaksikätisyyttä, koska sota-ajan puuttuvan resurssit voivat aiheuttaa valtavia menetyksiä. Suomessa Puolustusvoimat on erittäin riippuvainen yksityisen sektorin kuljetusyrityksistä, mutta toisaalta Puolustusvoimat on erittäin merkittävä kuljettajien kouluttaja sekä kuljetusyritysten asiakas. Suomessa kuljetukset ovat myös keskeisessä asemassa yhteiskunnan julkisten perustoimintojen turvaamisessa, lisäksi ne ovat erittäin tärkeitä kansalaisten, yksityisen sektorin ja huoltovarmuuden kannalta. Näin ollen kuljetusyritysten ja Puolustusvoimien välillä on vankka keskinäinen riippuvuus, jonka vuoksi ne ovat hyvä konteksti tutkia strategisia kumppanuuksia. Tähän väitöskirjaan sisältyvät tieteelliset aikakausilehtiartikkelit rakentuvat kahden tutkimusaineiston ympärille. Ensimmäinen tutkimusaineisto on kerätty Suomen Kuljetus ja Logistiikka (SKAL ry) yhdistyksen jäseniltä (460 hyväksyttyä vastausta edusten 17.7 prosenttia valitusta kohderyhmästä). Toinen tutkimusaineisto on kerätty Puolustusvoimien ja muun julkisen turvallisuussektorin (poliisi, sairaanhoito ja palolaitokset) logistiikkapalveluiden hankinnasta vastaavilta henkilöiltä sekä soveltuvilta yksityisen sektorin toimijoilta (149 hyväksyttyä vastausta edustaen 18.0 prosenttia valitusta kohderyhmästä). Molemmat tutkimusaineistot ovat analysoitu kuvailevilla tilastollisilla menetelmillä sekä rakenneyhtälömallinnuksella. Tämän tutkimuksen tavoitteena on löytää mahdolliset ongelmat ja tarjota alalla toimivien henkilöiden näkemys Puolustusvoimien ja yksityisten kuljetusyritysten yhteistyöstä. Näiden myötä pyritään kehittämään Puolustusvoimien toimitusketjun hallinnan organisaatiollista kaksikätisyyttä. Peliteoreettisesta näkökulmasta on tärkeää kuinka puolustusvoimat parantamaan huoltovarmuutta koska kuljetusala ja Puolustusvoimat ovat erittäin merkittäviä toimijoita toisilleen. Koska ilmeisesti Puolustusvoimien logistiikkastrategia pyrkii vaikuttamaan pääasiassa suoriin kuljetuskustannuksiin, on Puolustusvoimilla opittavaa omista käytännöistään. Keskittymällä kuljetusten laatuun suorien kuljetuskustannusten sijasta voidaan logistiikan kokonaiskustannuksia alentaa ja samalla turvata kotimaisten kuljetusresurssien säilymistä
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Greičiūtė, Kristina. "Karinių poligonų dirvožemio pažeidimų ir taršos tyrimai bei elektrokinetinio metodo taikymo galimybės." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2007. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20070305_133717-36511.
Повний текст джерелаАнотація:
Military grounds are territories with specific purpose. Various kinds of military installations, ammunitions and explosives are used in such areas. Because of these reasons, soil in military grounds is very often polluted with heavy metals and oil products; because of continuous damages, made to the top soil, vegetation is very scarce, in some spots missing – sandy wastelands are formed. Explosions, performed in military grounds, can be characterized by both thermal and chemical effect (soil pollution with such compounds, like lead, zinc, copper etc). Not only soils in military grounds and surrounding areas can be polluted because of military activities, but surface water bodies and groundwater as well. Aiming on determination and estimation of the level of pollution and disturbance of superficial layer of soil in military grounds, it is essential to do comprehensive research on physical (explosions and other mechanical effects) and chemical (pollution with heavy metals) effects on soil, caused by militaryactivities, and to evaluate potential danger of pollutants spread and groundwater pollution. It is important to foreseen changes of soil damage and pollution depending on impact strength, type and intensity of military action, performed in specific area, and to evaluate pollution dispersion in deeper layers of soil, relying on investigation results and long-term prognosis. It is necessary to apply and elaborate effective methods for cleaning of polluted soils from military... [to full text]
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Livak, Thomas Michael. "Collaborative warrior tutoring." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0824104-152548/.
Повний текст джерелаАнотація:
Thesis (M.S.)--Worcester Polytechnic Institute.Keywords: Collaborative tutoring; Intelligent tutoring; Computer generated forces; Cognitive modeling. Includes bibliographical references (p. 29-31).
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McNaught, Kenneth R. "Extensions of stochastic combat modelling methodology." Thesis, Cranfield University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266484.
Повний текст джерела