Готові списки джерел за темами / Reverse thrust

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Добірка наукової літератури з теми "Reverse thrust"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Reverse thrust"

Musser, George. "NASA's Reverse Thrust." Scientific American 294, no. 6 (2006): 22–23. http://dx.doi.org/10.1038/scientificamerican0606-22.

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Siddiqui, Mohd Anees. "Utilization of Thrust Reverser Mechanism in Turbofan Engines – A Review." International Journal of Applied Mathematics and Informatics 16 (March 5, 2022): 9–12. http://dx.doi.org/10.46300/91014.2022.16.2.

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Through this paper an attempt is made to focus on a special technology based on application of thrust reverser in turbofan engine which is common to the aviation industries but an uncommon in general. The airlines accept that thrust reverser is necessary for safe operations because it provides an added margin of safety for transport aircraft operations. In this technology, forward thrust produced by turbofan engine of aircraft is diverged to reverse direction so as to provide an additional deceleration effect during landing and power back effect. This technique is employed for improving aircra

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Komov, Alexey, and Vladimir Echevskii. "Reverse capacity and aircraft thrust reverse application efficiency." Vestnik Moskovskogo aviatsionnogo instituta 28, no. 1 (2021): 7–18. http://dx.doi.org/10.34759/vst-2021-1-7-18.

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Lettis, William R., Donald L. Wells, and John N. Baldwin. "Empirical observations regarding reverse earthquakes, blind thrust faults, and quaternary deformation: Are blind thrust faults truly blind?" Bulletin of the Seismological Society of America 87, no. 5 (1997): 1171–98. http://dx.doi.org/10.1785/bssa0870051171.

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Abstract Active thrust faults pose a significant seismic hazard worldwide. Many of these faults include “blind” thrusts, where the propagating fault tip does not reach the Earth's surface, and “buried” faults, where the geomorphic expression of the fault is obscured by subsequent sedimentation and/or erosion. This raises the issue of whether conventional geologic, geomorphic, and paleoseismic methods can be used to identify and characterize thrust faults for the assessment of seismic hazards or whether these faults sometimes are truly “blind.” We compiled a data base of 148 worldwide moderate-

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Ke, Jie, Bihai He, Chongwen Jin, Xu Zhang, and Zhisheng Zhu. "Modeling and Simulation of Electric Thrust Reverser Actuator Control Based on Simulink." Journal of Physics: Conference Series 2401, no. 1 (2022): 012059. http://dx.doi.org/10.1088/1742-6596/2401/1/012059.

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Abstract According to the structural characteristics and working principle of the electric actuator system of the aircraft thrust reverser, the mathematical control model of the thrust reverser actuator is proposed for a certain type of electric thrust reverser actuator system. The model is established and simulated by the modular modeling method based on Simulink software. The actuator’s load force, transmission, displacement, and velocity relationship are analyzed. The simulation results show that the model can simulate the deployment and stow of the actuator under different conditions and p

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Asensio, C., G. Moschioni, M. Ruiz, M. Tarabini, and M. Recuero. "An Intelligent Thrust Reverse Noise Detector." Noise & Vibration Worldwide 45, no. 6 (2014): 13–18. http://dx.doi.org/10.1260/0957-4565.45.6.13.

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Williams, Tim, Cesare Hall, and Mark Wilson. "Variable pitch fan aerodynamic design for reverse thrust operation." Journal of the Global Power and Propulsion Society 7 (April 7, 2023): 127–39. http://dx.doi.org/10.33737/jgpps/160096.

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Variable pitch low pressure ratio fans could enable higher propulsive efficiency and eliminate the need for heavy thrust reversers. In this paper, the effects of the fan rotor design on reverse thrust capability have been explored by varying key parameters of NASA’s Advanced Ducted Propulsor (ADP) while maintaining cruise point performance. Reverse thrust performance has been assessed using RANS single passage CFD of the variable pitch fan system with an extended domain. This computational approach has been validated using NASA Stage 51B, an experimental variable pitch fan test case. Predicted

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Butterfield, J., H. Yao, M. Price, et al. "Enhancement of thrust reverser cascade performance using aerodynamic and structural integration." Aeronautical Journal 108, no. 1090 (2004): 621–28. http://dx.doi.org/10.1017/s0001924000000452.

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AbstractThis paper focuses on the design of a cascade within a cold stream thrust reverser during the early, conceptual stage of the product development process. A reliable procedure is developed for the exchange of geometric and load data between a two dimensional aerodynamic model and a three dimensional structural model. Aerodynamic and structural simulations are carried out using realistic operating conditions, for three different design configurations with a view to minimising weight for equivalent or improved aerodynamic and structural performance. For normal operational conditions the s

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Park, Adrian F., Clint St. Peter, Steven J. Hinds, and Matthew R. Stimson. "Structural and stratigraphic history of the southern domain of the Indian Mountain Deformed Zone, southeastern New Brunswick, Canada: Tournaisian (Lower Carboniferous) tectonic ‘pop-up’ and collapse." Atlantic Geoscience 60 (August 13, 2024): 151–83. http://dx.doi.org/10.4138/atlgeo.2024.008.

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The southern domain of the Indian Mountain Deformed Zone (IMDZ) in southeastern New Brunswick marks a major right-lateral strike-slip fault belt active during late Tournaisian (Lower Carboniferous) sedimentation. The rocks of the Sussex Group, representing a depositional cycle from subsidence to basin inversion, occupy this zone and lie unconformable on crystalline basement, the latter representing a partially exhumed portion of the adjacent (to the south) buried Westmorland uplift. Deformation is related to early reverse faults/thrusts, later strike-slip faults. and latest normal faults. The

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Goryukhin, Maxim, Alexey Mikhailov, Alexandra Mikhailova, Daniil Krasnoperov, and Vladislav Eremenko. "INVESTIGATION OF THE EFFICIENCY OF VARIABLE PITCH ANGLE FAN IN AN ADVANCED ULTRA-HIGH-BYPASS TURBOFAN." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 76 (2024): 63–77. http://dx.doi.org/10.15593/2224-9982/2024.76.06.

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Engine manufacturers recognize that a variable pitch fan blade can provide the necessary fan stall margin to take the next step in engine cycle improvement with enhanced propulsive efficiency and low noise level. Variable pitch fans are of interest for future low-pressure ratio fan systems since they provide improved operability relative to fixed pitch fans. If they can also be re-pitched such that they generate sufficient reverse thrust, they could eliminate the engine drag and weight penalty associated with bypass duct thrust reversers. The objective of this paper is to investigate the effic

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Дисертації з теми "Reverse thrust"

McCarthy, Martin. "Contra-rotating open rotor reverse thrust aerodynamics." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/10448.

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Reverse thrust operations of a model scale Contra-Rotating Open Rotor design were numerically modelled to produce individual rotor thrust and torque results comparable to experimental measurements. The aims of this research were to develop an understanding of the performance and aerodynamics of open rotors during thrust reversal operations and to establish whether numerical modelling with a CFD code can be used as a prediction tool given the highly complex flowfield. A methodology was developed from single rotor simulations initially before building a 3D‘frozen rotor’ steady-state approach to

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Milton, Johan, and Henrik Johansson. "Development of Trent 700 Thrust Reverser Overhaul Package." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12492.

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This report describes a thesis project in aeronautical engineering carried out during April and May 2011 at ST Aerospace Solutions, Arlanda. The company is one of Europe’s leading aviation component maintenance companies. The task for this thesis project has been to develop a baseline overhaul work package for the thrust reverser system of the Rolls-Royce Trent 700 jet engine. An overhaul work package is a collection of maintenance work sheets (MWS) used by the maintenance organization to confirm that a specific maintenance procedure has been carried out correctly. Documenting the maintenance

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Olender, Bogdan, and Богдан Андрійович Олендер. "Computer traction management system in the mode of landing on a short runway." Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/50741.

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1. Rogozhin V.A., Sineglazov V.M., Filyashkin N.. Automated aircraft control systems: K .: NAU, 2003. - 502 p. 2. Inozemtsev A. A., Konyaev E. A., Medvedev V. V. and et al. Aircraft engine PS-90A M .: FIZMATLIT, 2007 .- 320 p.<br>Analysis of European airfields in small towns shows that today airfields with "short runways" are the largest group, and in the future their number will only increase due to: the desire to bring airfields to densely populated areas, as well as due to low , compared with the "elite" airfields, construction costs. This trend is accompanied by the emergence of short ta

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Hall, S. L. R. "Investigation of passive flow control in a cascadeless thrust reverser." Thesis, Queen's University Belfast, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437881.

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Miller, Kenneth Elric. "The star thrust experiment, rotating magnetic field current drive in the field reversed configuration /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/9996.

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Vidakovic, Steven Slavko. "Fluid dynamic means of varying the thrust vector from an axisymmetric nozzle /." Title page, summary and contents only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phv648.pdf.

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Pace, Christopher Earl. "Nations at War: How External Threat Affects Ethnic Politics." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703388/.

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This dissertation explores the how external threat from militarized interstate disputes and interstate rivalries affect the relationship between the state and the ethnic groups within its borders. Specifically, it finds that national identity, the preservation of ethnic regional autonomy, and the formation of ethnic-based militias are all influenced by states involvement in international conflicts. In Sub Saharan Africa, discriminated groups are less likely to identify with their national identity and when the state is involved in an interstate dispute, while the rest of the country increases

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Stahl, Jonathan L. "Reading Faces: Inferring Physical Traits from Behavioral Descriptions." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1496307932460106.

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Friis, Simon C. ""It's no problem" : using reverse bargaining to manage the threat of second-order opportunism in social exchange." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118012.

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Thesis: S.M. in Management Research, Massachusetts Institute of Technology, Sloan School of Management, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 44-47).<br>Social exchange is paradoxically characterized by actors who expect reciprocity (Blau 1986), yet vigorously downplay these expectations using language we refer to as reverse bargaining. For example, responses to thanks such as "it's no problem" and "the pleasure was all mine" are ubiquitous in social exchange. The theory of local action (Leifer 1988a; Leifer 1988b) understands reverse barg

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Gkaniatsou, Andriana Evgenia. "Analysis of low-level implementations of cryptographic protocols." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29613.

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This thesis examines the vulnerabilities due to low-level implementation deficiencies of otherwise secure communication protocols in smart-cards. Smart-cards are considered to be one of the most secure, tamper-resistant, and trusted devices for implementing confidential operations, such as authentication, key management, encryption and decryption for financial, communication, security and data management purposes. The self-containment of smart-cards makes them resistant to attacks as they do not depend on potentially vulnerable external resources. As such, smart-cards are often incorporated in

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Книги з теми "Reverse thrust"

C, Asbury Scott, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., eds. Static performance of a cruciform nozzle with multiaxis thrust-vectoring and reverse-thrust capabilities. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1992.

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Pulla, Lakshmi, ed. Ambedkar's thrust on education and reservation: Its impact on emancipation of Dalit, OBC, and minorities. Sunrise Publications, 2007.

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T, Applin Zachary, and Langley Research Center, eds. Subsonic aerodynamic characteristics of semispan commercial transport model with wing-mounted advanced ducted propeller operating in reverse thrust. National Aeronautics and Space Administration, Langley Research Center, 1994.

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Gatlin, Gregory M. Thrust-reverser flow investigation on a twin-engine transport. Langley Research Center, 1988.

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Frank, Quinto P., and United States. National Aeronautics and Space Administration. Scientific and Technical Information Division., eds. Thrust-reverser flow investigation on a twin-engine transport. National Aeronautics and Space Administration, Scientific and Technical Information Division, 1989.

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Green, Robert S. Measured pressure distributions inside nonaxisymmetric nozzles with partially deployed thrust reversers. Langley Research Center, 1987.

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Bangert, Linda S. Static internal performance of a nonaxisymmetric vaned thrust reverser with flow splay capability. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1989.

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J, Capone Francis, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., eds. Effect of port corner geometry on the internal performance of a rotating-vane-type thrust reverser. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1986.

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D, Leavitt Laurence, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., eds. Static internal performance of a thrust vectoring and reversing two-dimensional convergent-divergent nozzle with an aft flap. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1986.

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Частини книг з теми "Reverse thrust"

Filburn, Thomas. "In Flight Thrust Reverse Actuation." In Commercial Aviation in the Jet Era and the Systems that Make it Possible. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20111-1_10.

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Wang, Xiaoyu, Jingchao Zhao, Huitao Song, Zhong Luo, and Qingkai Han. "Dynamic Analysis of Under-Actuated Thrust Reverse Mechanism Considering Joint Clearance." In Advances in Mechanism, Machine Science and Engineering in China. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-9398-5_66.

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Cai, Qi, Lingling Yin, and Yang Wu. "A QAR-Based Method for Reverse Thrust Logic Analysis of Civil Transport Aircraft." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-8867-9_58.

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Yuan, Jie, Yangyang Xu, Maiping Guo, and Wenshan Wang. "Synchronicity Analysis of Electric Thrust Reverser Actuation System." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-8864-8_38.

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Tian, Yangtao, Meng Zuo, Hao Zhao, and Wenshan Wang. "Co-simulation Investigation on Hydraulic Thrust Reverser Actuation System." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-8864-8_68.

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Zhang, Yun-Hao, Eriqitai, and Xiao-Xing Li. "Numerical Simulation on Flow Fields of the Cascade Thrust Reverser." In Communications in Computer and Information Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-25002-6_84.

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Yuan, Jie, Meng Zuo, Tong Liu, Yangtao Tian, and Wenshan Wang. "Research on Transmission Mechanism Synchronism of Hydraulic Thrust Reverser Actuation System." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8048-2_251.

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Anderson, Benjamin D., Amber N. Barnes, Sajid Umar, Xinrong Guo, Thanaporn Thongthum, and Gregory C. Gray. "Reverse Zoonotic Transmission (Zooanthroponosis): An Increasing Threat to Animal Health." In Zoonoses: Infections Affecting Humans and Animals. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-85877-3_59-1.

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Dunne, Derek. "Titus Andronicus: The Evidence of the Senses under Threat." In Shakespeare, Revenge Tragedy and Early Modern Law. Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1007/978-1-137-57287-5_4.

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Тези доповідей конференцій з теми "Reverse thrust"

Niu, Wei, and Chongwen Jin. "Model Based Aircraft Thrust Reverse System Design." In 2024 3rd International Symposium on Aerospace Engineering and Systems (ISAES). IEEE, 2024. http://dx.doi.org/10.1109/isaes61964.2024.10751369.

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Feng, Pinzhe, Yuto Naoki, Kota Fujimoto, Kentaro Yokota, Sakahisa Nagai, and Hiroshi Fujimoto. "Basic Study on Short Distance Landing Control with Reverse Thrust of Variable Pitch Propeller for Fixed Wing Electric Aircraft." In 2025 IEEE International Conference on Mechatronics (ICM). IEEE, 2025. https://doi.org/10.1109/icm62621.2025.10934769.

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Wang, Xing, Anand Saxena, and Inderjit Chopra. "Measurement and Validation of a Mach-Scale Rotor Performance and Loads at High Advance Ratios." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11436.

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Reducing the rotor tip speed by slowing down the rotor in forward flight is a viable means of extending the cruise speed of a compound helicopter. However, in a high advance ratio flight regime, many aerodynamic phenomena remain unclear, including the thrust reversal and the dynamic stall that occurs in the reverse flow region of the retreating blade. In order to investigate the performance and vibratory loads characteristics of a high advance ratio rotor, wind tunnel tests were conducted with a Mach-scale 4-blade articulated rotor at 900 RPM, up to advance ratio 1.15. Hub loads, control angle

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Wang, Xing, Yong Jung, James Baeder, and Inderjit Chopra. "CFD Pressure/Airload Correlation with Experimental Data on a Slowed Mach-Scaled Rotor at High Advance Ratios." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0074-2018-12694.

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Slowing down the rotor RPM is a viable method to alleviate the compressibility effect at the advancing side of a rotor in forward flight, which is proved effective in raising the cruise speed limitation of a compound helicopter. A series of wind tunnel tests were conducted in the Glenn L. Martin Wind Tunnel, and some basic understandings were gained on the high advance ratio aerodynamic phenomena, such as thrust reversal and dynamic stall in reverse flow region. In one of the wind tunnel tests, the rotor blades were instrumented with pressure sensors and strain gauges at 30% radius, and enough

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Croke, Alexander, Oliver Wild, Richard Green, and Anya Jones. "Experimental Investigation of Rotor Blade Structural Response In Hovering and Advance Flight." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0080-2024-1228.

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A towing tank investigation of a single rotor blade operating at hovering and high advance ratio conditions is presented. A custom blade was manufactured and instrumented with fully bridged axial strain gauges to monitor the flap bending strain at three radial locations. Measurements of rotor thrust and torque were obtained to characterise the rotor aerodynamic environment for advance ratios ranging from 0.4 to 1.00 and to identify the presence of stalled and reverse flow. Strain measurements obtained at three locations across the blade span show minima and maxima at approximately the same azi

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Reddinger, Jean-Paul, and Farhan Gandhi. "A Physics-Based Approach to Trim Optimization of an Articulated Slowed-Rotor Compound Helicopter in High-Speed Flight." In Vertical Flight Society 70th Annual Forum & Technology Display. The Vertical Flight Society, 2014. http://dx.doi.org/10.4050/f-0070-2014-9465.

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The present study considers a compound helicopter with an articulated main rotor and uses a physics-based approach to arrive at, and understand, the optimal trim states at high-speeds in the 225-250 kts range. Simulations are based on a compound derivative of a modified UH-60A helicopter with a 20,110 lbs gross weight operating at sea level. The study shows that it is critical to use ailerons on the wing to counteract the propulsor torque and reduce rotor lateral cyclic pitch requirement and lateral cyclic flapping. Also, the stabilator needs to be used to fly the aircraft at a nose-level pitc

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Jacobellis, George, Matthew Floros, and Farhan Gandhi. "A Physics-Based Approach to Trim Optimization of Coaxial Helicopters in High-Speed Flight." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10124.

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Optimal trim was investigated for a lift-offset coaxial helicopter in high speed flight. An RCAS model of the XH-59 Advancing Blade Concept demonstrator aircraft was developed for the study and flight test trim conditions at 250 kts were used for baseline trim. The effects of varying redundant controls including rotor speed, auxiliary thrust, and differential lateral pitch were examined by trimming the aircraft at a variety of different trim states. Low power and low vibration trim states were identified and the performance and vibratory loads of these trim points were compared to the baseline

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Gonzalez-Ruiz, Enaut, Tashfeen Mahmood, Vishal Sethi, and Pericles Pilidis. "Design Feasibility of Annular Target Thrust Reversers." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68810.

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Concerns for ecological aviation products and the objective of reducing pollutants to meet ACARE (Advisory Council for Aeronautics Research in Europe) targets address, among other initiatives, the necessity of reducing the overall weight of the aircraft. One way of dealing with the problem of aircraft weight is by investigating thrust reversers. Reducing the reverser weight will have favourable effects on fuel consumption and CO2 emissions. This paper discusses the target type thrust reverser concept. This concept was proposed by NASA and has a potential of reducing the reverser weight on futu

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Adkins, Richard C., and Mike Sherwood. "Thrust Reverser Catchers: Devices Which Enable Cyclic Testing Between Forward and Reverse Thrust." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-085.

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Cyclic operation of engines between forward and reverse thrust configurations is a requirement of testing for Extended Twin Operations (ETOPS) certification. When these tests are conducted inside enclosed test cells it is then necessary to redirect the exhaust gases in order to return them to the cell exhaust ducting. This is done by specially designed catcher ducts which have undergone many years of development, due to the complicated nature of the flow. The paper discusses the features that have eventually made these devices successful and as such is intended as an aid to design.

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Zhou, Li, Zhanxue Wang, Jingwei Shi, and Xiaobo Zhang. "Investigation on a Blockerless Cascade Thrust Reverser System Based on Response Surface Method." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75110.

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The blockerless cascade thrust reverser is one of the innovative thrust reverser systems, which replaces the traditionally mechanical blocker door with the aerodynamic blocker door by high-pressure secondary injection, thus significantly reduces the nacelle weight and the complexity of the actuator, and especially suitable for high-bypass-ratio turbofan engine. In order to obtain the optimum performance of a blockerless cascade thrust reverser system and provide the guidance for the design of the blockerless cascade thrust reverser system, a blockerless cascade thrust reverser system was studi

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Звіти організацій з теми "Reverse thrust"

Lane, L. S. Bedrock geology, Mount Raymond, Yukon, NTS 116-I/8. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329963.

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The Mount Raymond map area incorporates the western limb of the Richardson anticlinorium, southern Richardson Mountains, northern Yukon. It is underlain by four Paleozoic sedimentary successions: middle Cambrian Slats Creek Formation, Cambrian to Early Devonian Road River Group, Devonian Canol Formation, and Late Devonian to Carboniferous Imperial and Tuttle formations. The Richardson trough depositional setting of the first three successions is succeeded by a deep-marine, turbiditic, Ellesmerian, orogenic foredeep setting for the Imperial-Tuttle succession. Several major thrust faults and rel

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Childs, Robert E., Laura C. Rodman, and Peter Bradshaw. Turbulence Modeling for Thrust Reverser Flow Field Prediction Methods. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada266139.

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Boals, Mark W., and Susan J. Evans. Development of the C-17 Fan Thrust Reverser Container, CNU-688/E. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada470979.

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van den Boogaard, Vanessa, Wilson Prichard, Nikola Milicic Nikola, Matthew Benson, and Deanndre Chen. Tax Revenue Mobilisation in Conflict-affected Developing Countries. Institute of Development Studies, 2025. https://doi.org/10.19088/ictd.2025.009.

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Taxation is central to state building in post-conflict states. This reflects both the urgent need for revenue during post-conflict reconstruction and the broader governance implications of taxation related to state capacity building and the expansion of governmental responsiveness and accountability. In European states, taxation was historically central to enabling war and a longstanding literature suggests that conflict, or its threat, may increase tax collection. However, this centrality is not reflected in existing practice or research. It is unclear whether theoretical findings about the r

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Kruglova, Anna. Understanding Conspiracist Radicalisation QAnon’s Mobilisation to Violence. ICCT, 2023. http://dx.doi.org/10.19165/2023.2.02.

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This policy brief analyses the phenomenon of conspiracy theories, and how they fit in the realm of research on violent extremism. Using the case study of QAnon, this Policy Brief looks at how the movement mobilises people to violence on social media and attempts to determine how different this this process is from any other process of radicalisation to violence. By combining discourse analysis of the movement’s Gab posts, interviewing former supporters, and analysing three illustrative case studies, this Policy Brief identifies five discourses - such as revenge, “the Other”, chosenness/ specia

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Moraes, Juan Andrés, Daniel Buquet, Daniel Chasquetti, Adolfo Garcé, Andrés Pereyra, and Ruben Tansini. Political Institutions, Policymaking Processes, and Policy Outcomes: The Case of Uruguay. Inter-American Development Bank, 2006. http://dx.doi.org/10.18235/0011296.

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This paper analyses the dynamics of policymaking among the various political institutions in Uruguay. The authors find that first, there are relatively stable policies, such as those allowing for the commercial and financial openness of the country. Then there are inflexible and low-quality policies, such as those related to social policies, some areas of state reform (civil servants' wages and hiring mechanisms), the bankruptcy regime, etc. Finally, there are volatile outcomes resulting from economic shocks, such as those related to discretionary public spending. In certain cases, the main ou

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Manwaring, Priya, and Tanner Regan. Public Disclosure and Tax Compliance: Evidence from Uganda. Institute of Development Studies, 2024. http://dx.doi.org/10.19088/ictd.2024.063.

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In many countries, tax administrations have only a low capacity to enforce tax collection. In such circumstances, public disclosure policies – where the compliance and/or non-compliance of taxpayers is made public – are an appealing tool to raise compliance. However, the effect of such policies in low-compliance settings is not well understood. Through a field experiment conducted in 2021 with over 65,000 property taxpayers in Kampala, Uganda, we study the effects of reporting delinquents and recognising compliers. While the threat of publicly disclosing delinquency raises compliance, subseque

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Occhiali, Giovanni, and Fredrick Kalyango. Can Tax Agents Support Tax Compliance in Low-Income Countries? A Review of the Literature and some Preliminary Evidence from Uganda. Institute of Development Studies (IDS), 2021. http://dx.doi.org/10.19088/ictd.2021.018.

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Since the late 1970s, many countries have based their tax systems on self-assessment – taxpayers are expected to evaluate their liabilities autonomously, and voluntarily remit their tax due. If the tax system is perceived as fair and easy to navigate, with credible threat of penalisation for non-compliance, self-assessment reduces the cost of tax administration without significant revenue losses (Barr et al. 1977; Teviotdale and Thompson 1999; James and Alley 2004). On the other hand, self-assessment entails an increase in compliance costs for taxpayers, at the very least in terms of time spen

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Jordan, Ramon L., Abed Gera, Hei-Ti Hsu, Andre Franck, and Gad Loebenstein. Detection and Diagnosis of Virus Diseases of Pelargonium. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568793.bard.

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Pelargonium (Geranium) is the number one pot plant in many areas of the United States and Europe. Israel and the U.S. send to Europe rooted cuttings, foundation stocks and finished plants to supply a certain share of the market. Geraniums are propagated mainly vegetatively from cuttings. Consequently, viral diseases have been and remain a major threat to the production and quality of the crop. Among the viruses isolated from naturally infected geraniums, 11 are not specific to Pelargonium and occur in other crops while 6 other viruses seem to be limited to geranium. However, several of these v

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