Dissertations / Theses on the topic 'Air Data System'
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Morrison, Thomas M. "THE USE OF TELEMETRY DATA IN AN AIR DATA SYSTEM." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604135.
Full textTelemetry data are usually collected for analysis at some later time and can be monitored to follow the progress of a test. In the case of an Air Data System the signals from the sensors are sent to a computer that calculates the air data parameters for use on multiple LabView-generated displays, as well as to the Data Acquisition System. The readouts on the multiple displays need to be real-time so they are useful to the flight crew. Equations that control the different air data values are determined by what telemetry data are available and the preference of those doing the test planning. These systems need to display the information in a format useful to the flight crew and be reliable.
Lin, Joyce C. (Joyce Chaisin) 1979. "VisualFlight : the air traffic control data analysis system." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87266.
Full textGray, Paula Margaret. "System tool for aircraft routing." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24398.
Full textBusiness, Sauder School of
Graduate
Ochodnická, Zuzana. "Data mining process automatization of air pollution data by the LISp-Miner system." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-192393.
Full textOzer, Huseyin Erman. "Air Data System Calibration For Military Transport Aircraft Modernization Program." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615690/index.pdf.
Full textRaghuraman, Arvind Greene Michael E. "Efforts toward design, development and implementation of an integrated and flexible support system for calibration of air data attitude heading reference systems." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Theses/RAGHURAMAN_ARVIND_46.pdf.
Full textBlack, Richard Allyn. "A flush mounted microelectromechanical system (MEMS) pressure and flow sensor based air data system /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/10012.
Full textCarvalho, Rubens Felipe Quintanilha de. "Um método para modelagem de sistemas aplicado a um air data system." Instituto Tecnológico de Aeronáutica, 2011. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=2815.
Full textZhalgasbekova, Aigerim. "CollMule: An Opportunistic Data Collection System for IoT-based Indoor Air Quality Monitoring." Thesis, Luleå tekniska universitet, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65346.
Full textJensen, Luke L. "Data-driven flight procedure simulation and noise analysis in a large-scale air transportation system." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119288.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 227-234).
Aircraft noise is a growing source of community concern around airports. Despite the introduction of quieter aircraft, increased precision of onboard guidance systems has resulted in new noise impacts driven by overflight frequency effects. Noise issues present a potential barrier to the continued rollout of advanced operational procedures in the US. This thesis presents a data-driven approach to simulating and communicating noise effects in the flight procedure development and modernization process, with input from multiple stakeholders with varying objectives that are technical, operational, and political in nature. First, a system-level framework is introduced for developing novel noise-reducing arrival and departure flight procedures, clarifying the role of the analyst given diverse stakeholder objectives. The framework includes relationships between baseline impact assessment, community negotiation, iterative flight procedure development, and formal implementation processes. Variability in stakeholder objectives suggests a need to incorporate noise issues in conjunction with other key operational objectives as part of larger-scale US air transportation system modernization. As part of this framework development, an airport-level noise modeling method is developed to enable rapid exposure and impact analysis for system-level evaluation of advanced operational procedures. The modeling method and framework are demonstrated by evaluating potential benefits of specific advanced procedures at 35 major airports in the US National Airspace System, including Performance Based Navigation guidance and a speed-managed departure concept.
by Luke L. Jensen.
Ph. D.
Bonavita, Massimo. "The new data assimilation system at the Italian Air Force Weather Service : design and preliminary results /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FBonavita.pdf.
Full textThesis advisor(s): Carlyle H. Wash, Roger T. Williams. Includes bibliographical references (p. 67-72). Also available online.
Monmousseau, Philippe. "Passengers : customers, actors and sensors of the air transportation system." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30244.
Full textAir transportation uses planes to transport passengers efficiently between two airports, and its development has been driven by the continuous improvement of planes as a safe and efficient means of transportation. However, if the COVID-19 pandemic has taught the air transportation system one lesson, it's that a problem affecting passengers can be far more detrimental to the air transportation system than a problem affecting planes. Acknowledging the fact that passengers are omnipresent and necessary to the air transportation system, this study proposes to consider passengers as sensors of the air transportation system and harness data generated by passengers to evaluate in near real time the flight-centric metrics traditionally used to evaluate the air transportation system performance. Data generated by passengers have the additional benefit of offering a means of evaluating the interactions between passengers and the other stakeholders of the air transportation system, such as airlines and airports. The journey of a passenger starting and ending beyond the boundaries of airport facilities, the data generated by passengers throughout their journey can also be used to evaluate the full door-to-door journey of a passenger of the air transportation system
Medina, Fabian Javier, Thomas Deranek, Austin Hoepfner, Hannah Ingle, Heidi McCook, Fabian Javier Medina, Thomas Deranek, Austin Hoepfner, Hannah Ingle, and Heidi McCook. "Technical Data Package and Final Report: Team 16028: System and Method for Air Velocity Generated Electrical Power." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/625097.
Full textAlcantara, Lehi Sttenio. "Deploying and Analyzing Air Quality Sensors in Mongolian Gers." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/8908.
Full textMierzwiak, Sara M. "The Development of the Contaminant Exceedance Rating System (CERS) for Comparing Groundwater Contaminant Data." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1345227410.
Full textShollenberger, Tara Krystyna. "Statistical Entry, Descent, and Landing Flight Reconstruction with Flush Air Data System Observations using Inertial Navigation and Monte Carlo Techniques." Thesis, North Carolina State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3584009.
Full textResearch suggests what leaders should do or the qualities or characteristics they should have to be ethical leaders (Brown & Treviño, 2006). The ethical decision-making process that leaders should follow to avoid scandals and unethical behavior are overlooked. Few studies focused on ethical decision-making within higher education. Yet, educational leaders have an ethical responsibility that may be even more complex than those of other leaders due in part to increasingly diverse student populations enrolled in higher education that is having an impact on the growth of educational institutions on a global basis (Shapiro & Stekfovich, 2011). Further, ethical scandals are no longer contained by national borders. The rapid growth of technology coupled with changes in political and societal landscapes has advanced ethical scandals to global prominence. A more collective need to understand ethical values and ethical decision-making practices on a global level has emerged. To be globally effective, leaders must be aware of the similarities and differences across and within cultures that could influence business practices (Resick, Hanges, Dickson, & Mitchelson, 2006). However, cross-cultural research has not yet addressed the topic of ethical decision-making. In this study, the ethical decision-making process of higher education was not only examined in the United Stated but also in Poland. This exploratory study used the Delphi research technique to identify an ethical decision-making definition that higher administration leaders in both the United States and Poland use to make ethical decisions and identify the environmental factors that influence their decisions. Findings showed that the United States and Polish expert panels were different and showed very little in common in the identification of a definition and environmental factors. Lastly, both sets of experts identified a new process for ethical decision-making, each constructing a different ethical decision-making process model. This research on ethical decision-making provided evidence that the Polish and United States cultures are not as similar as identified in previous studies in terms of how they identify ethical decision-making and the factors they identify with influencing ethical decision-making. Using this information will create a better understanding of the practices and approaches to ethics that leaders use because of the huge influence they have and exert on people within their own organization and society around them.
Lugo, Rafael Andres. "Statistical Entry, Descent, and Landing Flight Reconstruction with Flush Air Data System Observations using Inertial Navigation and Monte Carlo Techniques." Thesis, North Carolina State University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3584008.
Full textA method is introduced to consider flush air data system (FADS) pressures using a technique based on inertial navigation to reconstruct the trajectory of an atmospheric entry vehicle. The approach augments the recently-developed Inertial Navigation Statistical Trajectory and Atmosphere Reconstruction (INSTAR), which is an extension of inertial navigation that provides statistical uncertainties by utilizing Monte Carlo dispersion techniques and is an alternative to traditional statistical approaches to entry, descent, and landing trajectory and atmosphere reconstruction.
The method is demonstrated using flight data from the Mars Science Laboratory (MSL) entry vehicle, which contained an inertial measurement unit and a flush air data system called the Mars Entry Atmospheric Data System (MEADS). An MSL trajectory and atmosphere solution that was updated using landing site location in INSTAR is first presented. This solution and corresponding uncertainties, which were obtained from Monte Carlo dispersions, are then used in a minimum variance algorithm to obtain aerodynamic estimates and uncertainties from the MEADS observations. MEADS-derived axial force coefficient and freestream density estimates and uncertainties are also derived from the minimum variance solutions independent of the axial force coefficients derived from computation fluid dynamics (CFD), which have relatively high a priori uncertainty. Results from probabilistic analyses of the solutions are also presented.
This dissertation also introduces a method to consider correlated CFD uncertainties in INSTAR. From a priori CFD uncertainties, CFD force and pressure coefficients are dispersed in a Monte Carlo sense and carried over into the reconstructions. An analysis of the subsequent effects on the trajectory, atmosphere, and aerodynamic estimates and statistics is presented.
Trajectory, atmospheric, and aerodynamic estimates compare favorably to extended Kalman filter solutions obtained by the MSL reconstruction team at NASA Langley Research Center. The uncertainties obtained through the methods from this work are generally smaller in magnitude because of assumptions made regarding sources of error in the MEADS pressure transducer uncertainties. Using data-derived uncertainties in the pressure measurement noise covariance results in aerodynamic parameter estimate uncertainties that are in better agreement with the uncertainties derived from the Monte Carlo dispersions. CFD database errors dominate the uncertainties of parameters derived from aerodatabase axial force coefficients.
Lundmark, Albin, and Emma Roxström. "Urbanization and economic freedom - are they threats to air quality? : Evidence from a panel study of low and lower-middle-income countries." Thesis, Uppsala universitet, Nationalekonomiska institutionen, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-435088.
Full textNorén, Bång Ola. "STCA : an aircraft conflict alert system." Thesis, Linköping University, Department of Computer and Information Science, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2297.
Full textThe purpose of this Master’s Thesis is to produce a specification for the aircraft conflict alert system STCA, and implement a prototype as a module in the air traffic surveillance system NOVA9000.
The specification is constructed based on functional requirements from EUROCONTROL and describes a system using a nominal trajectory method, where the future paths of aircraft are estimated. The trajectory is created using a probabilistic approach, where future positions are described with probability fields.
The prototype is implemented using the specification with some simplifications. The prototype is evaluated using recorded traffic from a heavy air traffic region surrounding an airport with parallel runways. 15 alerts were induced in 1,5 hour of morning traffic; this is far too much to be acceptable. Improvements are proposed and explanations to the high rate of alerts are made.
Jang, Wonyong. "Unsteady Multiphase Flow Modeling of In-situ Air Sparging System in a Variably Saturated Subsurface Environment." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7517.
Full textDyess, William W. Jr, Benjamin M. Shirley, and Wiley J. Robinson. "THE NEXT GENERATION OF TELEMETERING REQUIREMENTS FOR THE AIR FORCE SEEK EAGLE PROGRAM." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/607291.
Full textThe Air Force SEEK EAGLE Office (AFSEO) was chartered by the Secretary of the Air Force in December 1987. The mission of the AFSEO is to provide the United States Air Force increased combat capability through central management of the aircraft-stores certification process and provide in-house engineering and operations research capabilities. Additionally, the AFSEO is required to ensure the future viability of the aircraft-stores organic in-house capability with the insertion of evolving technologies. To accomplish this mission, the AFSEO employs all phases of the test process; from Digital Model and Simulation (DMS) to Open Air Range (OAR) flight tests. The AFSEO desires to prepare for the future DoD environment, and minimize the cost of developing its products that require advanced sensors and telemetry capability. For a number of years, a mainstay in the process has been instrumented aircraft. These aircraft were specially instrumented to support the mission of AFSEO. Similarly, stores were instrumented to obtain environmental data such as loads and vibration. With the rising cost of instrumentation and the national DoD trend to reduce the cost of development and maintenance of instrumentation, a new method will need to be found. Several advanced concepts in ground and airborne instrumentation at Eglin AFB are needed to support the mission of the AFSEO. These include a new generation of telemetry devices, sensors, and data acquisition components to provide rapid and cost effective instrumentation of test aircraft, stores, and suspension equipment. The new generation telemetry will provide integrated circuitry with “peel and stick” subminiature telemetry sensors. These telemetry sensors will provide flutter and structural loads data for aircraft-stores combinations. In conjunction with the telemetry sensors, advanced aircraft platform instrumentation will be needed to match precision flight mechanics to the spatial telemetry measurements for stress, strain, and dynamic activity of stores.
Kasradze, Ketevan [Verfasser], Hendrik [Gutachter] Elbern, and Andreas [Gutachter] Wahner. "An extended variational atmospheric chemistry data assimilation system for combined space and air borne trace gas retrievals / Ketevan Kasradze ; Gutachter: Hendrik Elbern, Andreas Wahner." Köln : Universitäts- und Stadtbibliothek Köln, 2016. http://d-nb.info/1117134814/34.
Full textFraczek, Michael Darius [Verfasser], and Volker [Akademischer Betreuer] Wulfmeyer. "Aircraft air data system based on the measurement of Raman and elastic backscatter via active optical remote-sensing / Michael Darius Fraczek. Betreuer: Volker Wulfmeyer." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2014. http://d-nb.info/1048384799/34.
Full textFraczek, Michael [Verfasser], and Volker [Akademischer Betreuer] Wulfmeyer. "Aircraft air data system based on the measurement of Raman and elastic backscatter via active optical remote-sensing / Michael Darius Fraczek. Betreuer: Volker Wulfmeyer." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:100-opus-9650.
Full textSeidu, Iddrisu. "Analytical and Numerical Validation of Nozzle Spray Measurement Data Obtained from a Newly Developed Production System." Cleveland State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=csu1446504762.
Full textWallace, Keith, Tim McCleaf, and Tri Pham. "DIFFERENTIAL GPS ENHANCES TEST CAPABILITIES OF DOMESTIC AND INTERNATIONAL PROGRAMS." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/608372.
Full textA system was developed using capabilities from the Range Applications Joint Program Office (RAJPO) GPS tracking system and the ACMI Interface System (ACINTS) to provide tracking data and visual cues to experimenters. The Mobile Advanced Range Data System (ARDS) Control System (MACS) outputs are used to provide research data in support of advanced project studies. Enhanced from a previous system, the MACS expands system capabilities to allow researchers to locate where Digital Terrain Elevation Data (DTED) is available for incorporation into a reference data base. The System Integration Group at Veda Incorporated has been supporting Wright Laboratories in the ground-based tracking and targeting arena since 1989 with the design, development, and integration of four generations of real-time, telemetry-based tracking aids. Commencing in Q3 1995, Veda began developing a mobile, transportable system based on the RAJPO GPS tracking system. The resulting system architecture takes advantage of the front end processor (FEP) used in the three previous generations of interface systems built for Wright Laboratories, thus maximizing hardware and software reuse. The FEP provides a computational interface between the GPS tracking system and the display (operator) system. The end product is a powerful, flexible, fully mobile testbed supporting RDT&E requirements for Wright Laboratories, as well as to other U.S. and foreign research organizations. The system is rapidly reconfigurable to accommodate ground-based tracking systems as well as GPS-based systems, and its capabilities can be extended to include support for mission planning tools, insertion of virtual participants such as DIS entities, and detailed post-mission analysis.
Sweeney, Todd Franklin. "A comparison of the Joint Maritime Command Information System (JMCIS) capabilities with the U.S. Marine Corps (U.S.M.C.) Advanced Tactical Air Command Center (ATACC) data link requirements." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/43032.
Full textModern computing advances allow the aerospace controls engineer the ability to design, test, and implement automatic control systems for air vehicles with breath taking speed and accuracy. This work examines the automation of the hardware-in-the-loop testing and implementation of autonomous controllers for Unmanned Air Vehicles. Extraordinary interest is generated in this subject considering automation results in hardware-in-the-loop testing within days of completing a controller design. The entire automation process is presented, from design of the controller to implementation on a particular control platform to hardware-in-the-loop testing of the controller. This accomplishes control design and implementation in a matter of months compared to a few years or more before automation.
Zhu, Yurong. "A Study of Smart Ventilation System to Balance Indoor Air Quality and Energy Consumption : A case study on Dalarnas Villa." Thesis, Högskolan Dalarna, Mikrodataanalys, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:du-34431.
Full textSweeney, Todd Franklin. "A comparison of the Joint Maritime Command Information System (JMCIS) capabilities with the United States Marine Corps (USMC) Advanced Tactical Air Command Center (ATACC) data link requirements /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA286025.
Full textThesis advisor(s): Carl R. Jones, W.G. Kemple. "September 1994." Includes bibliographical references. Also available online.
Sen, Debayan. "A bi-level system dynamics modeling framework to evaluate costs and benefits of implementing Controller Pilot Data Link Communications and Decision Support Tools in a non-integrated and integrated scenario." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/41886.
Full textMaster of Science
Hassebroek, Pamela Burns. "Institutionalized Environments and Information Security Management: Learning from Y2K." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-06192007-111256/.
Full textRogers, Juan D., Committee Chair ; Klein, Hans K., Committee Member ; Bolter, Jay David, Committee Member ; Nelson-Palmer, Mike, Committee Member ; Kingsley, Gordon, Committee Member.
Arshad, Fasiha. "A Study of Smart Ventilation System for Maintaining Healthy Living by Optimal Energy Consumption : A case study on Dalarnas Villa." Thesis, Högskolan Dalarna, Mikrodataanalys, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:du-35967.
Full textRamirez, Buitrago Ana Maria. "Modelagem computacional de válvula de expansão eletrônica para sistema de refrigeração e ar condicionado." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259124.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
Made available in DSpace on 2018-08-15T23:40:38Z (GMT). No. of bitstreams: 1 RamirezBuitrago_AnaMaria_M.pdf: 759461 bytes, checksum: 2948f7c4d961f0f71c8c3d790e304829 (MD5) Previous issue date: 2010
Resumo: Neste trabalho apresentamos a modelagem computacional de uma válvula de expansão eletrônica a partir de dados experimentais de entradas e saídas através de modelos no espaço de estado, usando técnicas de subespaços, com objetivo de ter um sistema de refrigeração e ar condicionado eficiente, combinando eletrônica de potência e computação de modo a fornecer uma melhor solução para conservação de energia. A modelagem e a validação são feitas usando uma implementação computacional dos algoritmos de subespaços do espaço de estado. Os resultados apresentados mostram a validade e vantagens da técnica de modelagem realizada
Abstract: This research shows the computational modeling of a electronic expansion valve based on input and output experimental data using Models in State Space and subspace methods. The aim of this work was to obtain an efficient Cooling and Air Conditioning system by the combination of power electronics and computation, as a result, a better solution for energy conservation was obtained. Modeling and validation are made using a computational implementation of subspace methods algorithms in state space. Achieved results show the validity and advantages of the modeling technique implemented
Mestrado
Automação
Mestre em Engenharia Elétrica
Kučera, Cyril. "CFD simulace proudění vzduchu v kabině automobilu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378275.
Full textDoering, Jeffrey R. (Jeffrey Ryan) 1977. "Evaluation of an object-based data interoperability solution for Air Force systems." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86474.
Full textHart, Dennis L., and Marvin A. Smith. "AIM-120A DOPPLER RADAR TELEMETRY DATA REDUCTION AND ANALYSIS SOFTWARE." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/608575.
Full textThis paper describes the application software used to convert AIM-120A, Advanced Medium Range Air-to-Air Missile (AMRAAM), telemetry data to a series of color images and time-correlated engineering unit results. X Window System-based graphics facilitate visualization of the doppler radar data. These software programs were developed for the VAX/VMS and DEC Alpha environments.
Queiroz, Vieira Turnell M. de F. "A decision making aid system based on a small microprocessor." Thesis, University of Bradford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379855.
Full textDimantchev, Emil(Emil G. ). "Air quality co-benefits of renewable energy policy in the U.S." Thesis, Massachusetts Institute of Technology, 2018. https://hdl.handle.net/1721.1/122091.
Full textThesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society, 2018
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 71-84).
Despite lawmaker interest in transitioning electricity systems toward renewable energy sources and in mitigating harmful air pollution, the extent to which sub-national renewable energy policies in the U.S. can improve air quality and human health remains unclear. This thesis develops a systemic modeling framework to assess the impacts of future renewable energy policy on air quality, as well as on the economy and on climate change, employing the framework of cost-benefit analysis. To model the chain of policy effects from impacts on the economy to power plant emissions, human health, and climate change, I integrate an economy-wide computable general equilibrium model, an atmospheric chemistry model, and methodologies for the economic valuation of health impacts. I apply this modeling framework to study the potential future impacts of the existing Renewable Portfolio Standards (RPSs) in the U.S. Rust Belt region.
This thesis also tests the impacts of alternative RPS stringency levels and assesses RPS impacts compared to carbon pricing, a climate policy favored by many economists. I estimate that existing RPSs in this region generate health co-benefits that, in economic terms, exceed the climate change mitigation benefits of these policies. Estimated health co-benefits also outweigh the economic costs of the modeled policies, indicating that air quality co-benefits alone may justify RPS implementation. This work further finds that raising RPS stringency in the Rust Belt increases net policy benefits (air quality and climate benefits minus costs). However, I show that air quality co-benefits are highly sensitive to several assumptions such as the economic value assigned to premature mortalities and the magnitude of the health response expected from a given level of pollution.
This thesis also estimates that carbon pricing generates greater air quality co-benefits for every ton of CO2 abated compared to an RPS, suggesting that carbon pricing may be more economically efficient (greater net benefits) relative to an RPS than previously thought. Finally, I show that RPSs have far-reaching economic impacts that have implications for their overall costs and benefits. This finding demonstrates the value of employing economy-wide models to understand the overall economic and environmental impacts of such sector-specific policies, and makes the case for a comprehensive, economy-wide approach for addressing air pollution and climate change.
by Emil Dimantchev.
S.M. in Technology and Policy
S.M.inTechnologyandPolicy Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society
Li, Mingyang Kusiak Andrew. "Application of computational intelligence in modeling and optimization of HVAC systems." [Iowa City, Iowa] : University of Iowa, 2009. http://ir.uiowa.edu/etd/397.
Full textShen, Xingyao. "Do local government-industry linkages affect air quality? : evidence from cities in China." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111234.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 75-79).
I investigate the relationship between local government-industry linkages and pollution outcomes in Chinese cities over the period 2003 to 2010. For identification, I rely on the administrative rotation of city mayors, which is determined by political career considerations and retirement age cut-offs but unrelated to their environmental records. These transitions act as plausibly exogenous shocks that disrupt the relationship between the local government and enterprises at the city level. I employ several statistical models to investigate the leadership's impacts on environmental outcomes. First, a simple t-test is used to evaluate the change in the pollution index when mayors with particular characteristics enter or leave office. In addition, empirical models are utilized to explore the correlation between mayoral characteristics and changes in city-level pollution. I find correlations between mayoral characteristics and city-level environmental outcomes, focusing specifically on SO₂ emissions, SO₂ emission intensities, and end-of-pipe SO₂ removal ratios. Finally, firm-level data allow me to identify the relationship between mayoral characteristics and pollution by enterprises of specific ownership types. Mayors with different characteristics show distinct impacts on city-level pollution. I hypothesize that city leaders who have previous experience in industry pay more attention to local economic growth rather than environmental improvements, resulting in increased SO₂ emissions. Consistent with this hypothesis, I find that mayors with industry work background correspond to an increase (decrease) in city-level SO₂ emissions when they enter (leave) office after controlling for city and year fixed effects. Apart from this, I expect that leaders closer to retirement are under less pressure for promotion as they are going to retire soon and due to age cut-offs may not be eligible for higher positions; instead, they may feel less pressure to promote local businesses and pay more attention to environmental management. Evidence shows consistently that tenures of mayors on the verge of retirement are associated with reductions in city-level SO₂ emissions and increases in city-level end-of-pipe SO₂ removal rates. Further investigation shows that mayors realize their environmental goals via enterprises of specific ownership types. I predict that mayors rotated from the central government are not under pressure of promotion and they are adherent to the central policy in reducing SO₂ emission intensities. I further predict that mayors from the local administration are expected to enforce the usage of SO₂ removal facilities, particularly among enterprises of low level authorities. Consistent with these hypotheses, results show that mayors with work background in central and local governments are associated with improved environmental outcomes, but through different channels. A central government work background results in intensity reduction, but not necessarily SO₂ emissions; however, local government work background is associated with short-term reductions in SO₂ intensities, possibly due to increases in SO₂ removal ratios, particularly among city SOEs. In addition to the analysis of mayoral characteristics, my research reveals several additional interesting findings. I find that enterprises of lower rank more readily build linkages with local officials not only for economic development but also for environmental management as high-ranking enterprises may face a more stringent monitoring system and are more politically powerful. Implications for environmental policy design in China can be drawn from the results. First, industries are encouraged to behave independently from the government in economic activities as well as policy implementation. Second, environmental performance should be effectively and explicitly included in the evaluation program of officials. Third, government-industry linkages, to the extent that they undermine the economic and policy system, should be minimized as much as possible.
by Xingyao Shen.
S.M. in Technology and Policy
Chimento, Charles William III. "Open innovation in the US Air Force." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127168.
Full textThesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, May, 2020
Cataloged from the official PDF of thesis. "May 2020."
Includes bibliographical references (pages 121-127).
If the Air Force is to maintain lethality and readiness, we must learn to adapt technologies and praxis within an increasingly diffuse knowledge landscape. This thesis examines two efforts orchestrated through AFWERX that seek to invigorate grass-roots problem-solving and reform research and development partnerships with small businesses. Stepping back, chapter one motivates and characterizes the ideological shift within the Department of Defense (DoD) towards agility, highlighting pioneering efforts and their challenges. Chapter two turns to the Squadron Innovation Fund (SIF), introduced in 2018 to empower mission-oriented units to address capability and efficiency gaps. The chapter contributes a data-driven perspective on the spending trends, draws lessons from analogous efforts in industry, and offers practical steps to leverage the potential of the SIF as a bottom-up signal for heavier funding sources. Chapter three evaluates the state of the Small Business Innovation Research (SBIR) program and traces its rapid reform under AFWERX, thereby setting up a rigorous econometric evaluation of these reforms in chapter four. Together, these chapters chart out a way forward for the SIF while providing evidence that AFWERX's modifications to SBIR are drawing a more desirable applicant pool.
by Charles William Chimento III.
S.M. in Technology and Policy
S.M.
S.M.inTechnologyandPolicy Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society
S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
Muramoto, Dylan Toshinari. "Tailorability-focused recommendations for United States Air Force software acquisition policy." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127176.
Full textThesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, May, 2020
Cataloged from the official PDF of thesis.
Includes bibliographical references (pages 57-60).
In order to adapt and respond to threats by near-peer-adversaries that are changing at an increasing pace, the U.S. Department of Defense (DoD) has been focused on reforming software acquisition for rapid development and deployment of software capabilities to the battlefield. Military leaders have been focused on accelerating development and increasing the frequency of deployment, encouraging developers to take risks to reduce schedules. However, military systems have certain levels of performance and quality requirements that must be met to successfully execute missions. Additionally, software systems have many different characteristics that must be considered during development. In this thesis, the DoD software acquisition process and new guidance from the Department and the U.S. Air Force (USAF) regarding software acquisition reforms are detailed first. The existing policy is examined to identify gaps regarding tailoring development processes to different software systems. After providing context on how software is developed and describing four process models to show that different processes are most appropriate for developing systems with certain characteristics, eight specific software system characteristics are identified: user, urgency, lifespan, performance (timing), quality/risk, size, integration, and requirements. Furthermore, recommendations to the USAF and DoD for implementing policy/guidelines that help establish a tailorable software acquisition process based on these eight system characteristics are provided. This thesis hopes to help leaders and managers understand the technical characteristics of software systems and match those with appropriate development process designs and practices, instead of a one-size-fits-all blanket solution, so that the required quality and evolvability of military systems are not compromised in execution of the national security mission.
by Dylan Toshinari Muramoto.
S.M.
S.M.
S.M. Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society
S.M. Massachusetts Institute of Technology, Department of Aeronautics and Astronautics
Fan, Terence P. "Performance study of flight deck interface systems for air traffic control-pilot data link communications (CPDLC)." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/50075.
Full textIncludes bibliographical references (p. 125-130).
In an effort to reduce saturation in voice radio channels and to take advantage of space-based communication technologies in a cost-effective basis, data link communication between the flight deck and air traffic control (CPDLC) is gradually coming to the fore. Currently, there are three main flight deck interface designs for CPDLC, and a comparative human factors study of these designs is documented in this thesis. However, in spite of the recent development, there is little coherent understanding on the influence of hardware interface components on performance. To contribute to this understanding, the performance of two flight deck CPDLC interface designs were compared at the Boeing Company, and the result was used to estimate the performance of a third interface design. As a follow-on study, an experiment was conducted to examine the relative performance of four simplified interface configurations for CPDLC. The experiment found that there was little difference in performance (task processing time, accuracy and efficiency) among the four interface configurations in simple communication tasks. However, as the level of difficulty of these tasks increases, a dual interface configuration with separate functionality on each interface required the least amount of time to accomplish the stated tasks. The additional maneuverability provided by a dual-interface configuration with identical functionality on each interface did not appear to lead to significant additional performance gains compared with the dual interface configuration with separate functionality. In general, the single-interface configurations required longer processing times for complicated tasks and were also found to incur higher workload according to the NASA Task Load Index.
by Terence Ping Ching Fan.
S.M.
Atac, Selcuk. "Gps Based Altitude Control Of An Unmanned Air Vehicle Using Digital Terrain Elevation Data." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607383/index.pdf.
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s altitude with respect to the mean sea level and position are obtained by an onboard global positioning system (GPS) and this information is transmitted to the ground computer via radio frequency (RF) communication modules. The altitude of the UAV above the ground is calculated by using the digital terrain elevation data (DTED). A controller is designed and its gains are tuned to maintain this flight altitude at a desired value by using the mathematical model developed to represent the longitudinal dynamics of the UAV. Input signals generated by the controller for elevator deflections are transmitted back to the UAV via RF communication modules to drive onboard servomotors to generate desired elevator deflections. All controller computations and RF communications are handled by a MATLAB®
based platform on a ground computer. UAV flight tests are carried out at two different autopilot modes
namely, mean sea level (MSL) altitude hold mode and above ground level (AGL) altitude hold mode. The developed platform worked properly during flight tests and proved to be reliable in almost every condition. Moreover, the designed controller system is demonstrated to be effective and it fulfills the requirements.
Grujicic, Julian. "A feasibility study for a satellite VHF Data Exchange System (VDES)." Thesis, KTH, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-262890.
Full textTransport globalt till havs ökar varje år och förväntas fortsätta att öka de följande årtiondena. Följaktligen finns ett behov av att etablera över horisonten kommunikation genom det automatiska identifieringssystemet (AIS) och det väldigt högfrekventa datautbytessystemet (VDES), under utveckling, för att spåra och kommunicera med fartyg över hela världen oberoende av avståndet från land. I detta examensarbete har en förstudie utförts för utvecklingen av ett system som uppfyller detta behov. Systemet föreslås bestå av en låg jordbana satellitkonstellation som kontinuerligt tillhandahåller VDES-kommunikation över hela världen. Ett systemtekniskt tillvägagångssätt har följts, intressenter har identifierats och utifrån dessa har systemkrav tagits fram. De viktigaste intressenterna befanns vara användare/kunder, satellitleverantören, satellitoperatören, tjänsteleverantören och nyttolastleverantören. Vidare lyftes olika möjliga användningsområden för systemet fram och en systemarkitektur framställdes vari systemet delades in i tre segment: rymdsegmentet, marksegmentet och uppskjutningssegmentet. Dessutom genomfördes designförslag för en satellitkonstellation samt en typisk satellit i en sådan konstellation. Satellitkonstellationen föreslogs bestå av 91 satelliter på en altitud på omkring 550 km i polära banor med gemensam inklination, detta var gällande för en minimum elevationsvinkel på 10 grader. Satelliten rekommenderades bestå av en 6 U CubeSat med den befintliga luftburna transpondern R5A från Saab TransponderTech som nyttolast, vilken bygger på mjukvaruradioteknik och är tänkt att vidareutvecklas för VDES-applikationer. Vidare, implementerades en länk- och data budget. Olika uppskjutningsmöjligheter undersöktes, varav slutsatsen att uppskjutning som sekundär nyttolast på ett delningsuppdrag eller som primär nyttolast medhjälp av ett mindre uppskjutningsfordon anpassat för små satelliter var de föredragna alternativen. Även en marknadsanalys har genomförts, där det redogjorts för hur många AIS / VDES - satelliter som har uppskjutits i LEO och av vilken tjänsteleverantör, samt ytterligare detaljer om små / nano satelliter av extra intresse för arbetet. En kort riskbedömning har också gjorts, där de mest uppenbara riskerna med utveckling, drift och undanröjande av systemet identifierats. Dessutom diskuteras Saabs möjliga roll i utvecklingen av satellit VDES. Slutsatsen av detta arbete har visat att det är möjligt att bygga en global kontinuerlig satellitkonstellation i låg jordbana med en mjukvaruradio som nyttolast som tillhandahåller VDES-tjänster till fartyg på öppna hav.
Xu, Hongjiang. "Critical success factors for accounting information systems data quality." University of Southern Queensland, Faculty of Business, 2003. http://eprints.usq.edu.au/archive/00001526/.
Full textChu, Rose Wan-Mui. "Towards the tutor/aid paradigm: design of intelligent tutoring systems for operations of supervisory control systems." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/25485.
Full textZhou, Jiayang. "Guiding operators' attention with the help of a visual aid system." Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-17207.
Full textLarsson, Clara. "Point of View : The Impact of Background Conditions on Distinguishability of Visualised Data in Detailed Virtual Environments." Thesis, Högskolan Väst, Avd för informatik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-16751.
Full textSchillén, Anton. "Aid System for Finding Trapped Earthquake Victims." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209349.
Full textDen här rapporten använder Emsuch-systemet [6] för att försöka lösa de problem som uppstår när armén letar efter överlevare i husmassor efter jordbävningar i Japan. Med Emsuch kan räddningsarbetarna hämta information från husen de går förbi under letandet. Under en tidigare studie [6] där grunden till systemet utvecklades identifierades flera punkter som leder till problem i de förhållanden som råder i de räddningsaktionerna. De två största utmaningarna är bristen på el och att infrastrukturen för kommunikation ofta är nere. Den här rapporten avser att utforma och implementera en lösning som gör att användarna i armén kan ansluta sig till varje enhet i förbifarten. Med en fallstudie som inkluderar en intervju med Japans markbaserade försvarsstyrkor i Sapporo togs ett kravdokument fram. Detta kravdokument användes som grund för implementeringen av systemet. En prototyp togs fram och testades delvis. Resultatet av testerna visade att Emsuch har potential för att användas i räddningsarbeten, men att det är flera delar som behövs fixas för att klara av verkliga situationer.