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  • 2020-2024  (66)
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  • 1
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    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Publication Date: 2023-06-27
    Description: Accurate estimates of river discharge are vital to quantify the amount of water resources. In view of the steadily declining in-situ gauge network hydrological monitoring through spaceborne sensors becomes a necessity. The SWOT mission is the first satellite to conduct a global survey of Earth's surface water. It can provide measurements such as water surface elevations, changes in cross-sectional areas, river widths, and slopes. As the SWOT data is sparse due to the 21 days orbit repeat period, we aim to develop a Kalman filter for continuous discharge estimation of an entire river network. To this end, we obtain the process model based on a physically based spatiotemporal correlation, which represents the correlation between the discharge values of river network in time and space. The observation model is derived from the discretization of the mass conservation equation, where the changes in cross-sectional areas are as the observations. The Kalman filter will be executed simultaneously in time and space domain to obtain daily discharges for river basins.The feasibility of the approach is verified by Pepsi2 data, which is a synthetic river dataset built for testing and development of the SWOT mission discharge algorithms. This method is also very promising for combining multiple data as from SWOT, nadir altimetry, imagery and in situ.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 2
    Publication Date: 2024-04-30
    Description: A newly built versatile device for mode I fracture toughness measurement is presented. To test this apparatus, measurements have been conducted on two crystalline rocks, the Aue Granite and the Äspö Diorite, and two chalks from the Paris basin, Obourg and Ciply chalks. The fracture toughness KIC can be measured with two different testing procedures, the Semi-Circular Bend (SCB) and the Straight Edge Cracked Round Bar Bend (SECRBB) methods, both known for the easiness of the notched sample preparation. For the SCB tests, ultrasonic sensors were mounted at the sample surface to monitor changes in P-wave velocity and record acoustic emission activity. Our results are in reasonably good agreement with published data on the same rocks. The SECRBB test provides values of the fracture toughness 37% higher compared to the SCB test for the Obourg chalk. This discrepancy may be explained by a sample size effect. The fracture toughness of water saturated chalks is strongly reduced compared to that of the dry chalks by almost 50%. This shows that fracture toughness is a valuable parameter to assess the importance of water weakening in porous rocks.
    Type: info:eu-repo/semantics/article
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  • 3
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    RAND Corporation
    Publication Date: 2024-04-02
    Description: This book examines the strategic choices that American and Chinese decisionmakers face regarding sea power in the Western Pacific, shaped by geography, history, technology, and politics. In particular, the author explores the potential for cooperation on maritime security in the Western Pacific, and how the United States might pursue such cooperation as part of a broader strategy to advance its interests in the region.
    Keywords: History ; Political Science ; thema EDItEUR::N History and Archaeology::NH History::NHF Asian history ; thema EDItEUR::J Society and Social Sciences::JW Warfare and defence::JWC Military forces and sectors::JWCK Naval forces and warfare ; thema EDItEUR::N History and Archaeology::NH History::NHK History of the Americas ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPS International relations
    Language: English
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  • 4
    Publication Date: 2024-03-29
    Description: Current U.S. counterinsurgency strategy is in need of stronger cognitive capabilities that will enable the United States to "fight smarter." These include comprehension, reasoning, and decisionmaking, the components that are most effective against an enemy that is quick to adapt, transform, and regenerate. This paper offers concrete ideas for gaining the cognitive advantage in anticipating and countering the new global insurgency.
    Keywords: Political Science ; thema EDItEUR::J Society and Social Sciences::JW Warfare and defence ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPW Political activism / Political engagement::JPWL Terrorism, armed struggle
    Language: English
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  • 5
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    RAND Corporation
    Publication Date: 2024-04-02
    Description: The history of wars caused by misjudgments, from Napoleon’s invasion of Russia to America’s invasion of Iraq, reveals that leaders relied on cognitive models that were seriously at odds with objective reality. Blinders, Blunders, and Wars analyzes eight historical examples of strategic blunders regarding war and peace and four examples of decisions that turned out well, and then applies those lessons to the current Sino-American case.
    Keywords: History ; thema EDItEUR::N History and Archaeology::NH History::NHF Asian history ; thema EDItEUR::J Society and Social Sciences::JW Warfare and defence::JWK Military and defence strategy ; thema EDItEUR::N History and Archaeology::NH History::NHK History of the Americas
    Language: English
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  • 6
    Publication Date: 2024-03-31
    Description: Insecurity in the 21st century appears to come less from the collisions of powerful states than from the debris of imploding ones. This paper aims to improve the understanding and treatment of failed states by focusing on critical challenges at the intersections between security, economics, and politics and on the guiding goal of lifting local populations from the status of victims of failure to agents of recovery.
    Keywords: Political Science ; Health Sciences ; thema EDItEUR::M Medicine and Nursing::MB Medicine: general issues::MBQ Medicolegal issues ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPB Comparative politics ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPS International relations
    Language: English
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  • 7
    Publication Date: 2024-03-29
    Description: For the past decade, Chinese military strategists have keenly observed the changes in U.S. national strategy and military transformation. This report examines the constraints, facilitators, and potential options for Chinese responses to U.S. transformation efforts and offers possible U.S. counterresponses (particularly in light of whether Taiwan moves toward or away from formal independence).
    Keywords: Political Science ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPS International relations ; thema EDItEUR::J Society and Social Sciences::JW Warfare and defence
    Language: English
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  • 8
    Publication Date: 2024-04-14
    Description: U.S. counterinsurgency efforts in Iraq and Afghanistan have failed to exploit information power, which could be a U.S. advantage but instead is being used advantageously by insurgents. Because insurgency and counterinsurgency involve a battle for the allegiance of a population between a government and an armed opposition movement, the key to exploiting information power is to connect with and learn from the population itself, increasing the effectiveness of both the local government and the U.S. military and civilian services engaged in supporting it. Utilizing mostly available networking technology, the United States could achieve early, affordable, and substantial gains in the effectiveness of counterinsurgency by more open, integrated, and inclusive information networking with the population, local authorities, and coalition partners. The most basic information link with the population would be an information technology (IT)-enhanced, fraud-resistant registry-census. The most promising link would come from utilizing local cell phone networks, which are proliferating even among poor countries. Access to data routinely collected by such networks can form the basis for security services such as enhanced-911 and forensics. The cell phones of a well-wired citizenry can be made tantamount to sensor fields in settled areas. They can link indigenous forces with each other and with U.S. forces without interoperability problems; they can also track the responses of such forces to emergencies. Going further, outfitting weaponry with video cameras would bolster surveillance, provide lessons learned, and guard against operator misconduct. Establishing a national Wiki can help citizens describe their neighborhoods to familiarize U.S. forces with them and can promote accountable service delivery. All such information can improve counterinsurgency operations by making U.S. forces and agencies far better informed than they are at present. The authors argue that todayÂ's military and intelligence networks-being closed, compartmentalized, controlled by information providers instead of users, and limited to U.S. war fighters-hamper counterinsurgency and deprive the United States of what ought to be a strategic advantage. In contrast, based on a review of 160 requirements for counterinsurgency, the authors call for current networks to be replaced by an integrated counterinsurgency operating network (ICON) linking U.S. and indigenous operators, based on principles of inclusiveness, integration, and user preeminence. Utilizing the proposed ways of gathering information from the population, ICON would improve the timeliness, reliability, and relevance of information, while focusing security restrictions on truly sensitive information. The complexity and sensitivity of counterinsurgency call for vastly better use of IT than has been seen in Iraq and Afghanistan. Here is a practical plan for just that.
    Keywords: Political Science ; Technology ; thema EDItEUR::U Computing and Information Technology::UR Computer security ; thema EDItEUR::J Society and Social Sciences::JW Warfare and defence
    Language: English
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  • 9
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    MDPI - Multidisciplinary Digital Publishing Institute
    Publication Date: 2022-01-31
    Description: Injuries are among the leading causes of child morbidity and mortality worldwide [1]. Because injuries typically are incurred by healthy children engaging in daily activities, they can be particularly devastating to the injured child and his or her family, disrupting otherwise mentally and physically healthy lives with tragic short- and long-term consequences. Despite the implication of the lay term “accident”, injuries are preventable. The global community of scholars and practitioners is slowly creating, discovering, and implementing programs to reduce the burden of injury on the world’s youth. This volume contributes to those objectives. [1...]
    Keywords: falls ; abuse ; pedestrian injury ; head trauma ; poisonings ; child injury ; motor vehicle safety ; drowning ; neglect ; burns
    Language: English
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  • 10
    Publication Date: 2023-10-05
    Description: This report discusses a design for a prospective payment system (PPS) for inpatient rehabilitation facilities. Such systems pay providers a predetermined, fixed price (per day, per episode, or per case). Since the payment is independent of the amount of service provided, these systems are thought to create an incentive for efficient, cost-conscious care. A new assessment tool has been developed for PPS for rehabilitation facilities and this study provides an evaluation of it.
    Keywords: Health Sciences ; bic Book Industry Communication::M Medicine::MB Medicine: general issues::MBP Health systems & services ; bic Book Industry Communication::M Medicine::MB Medicine: general issues::MBQ Medicolegal issues
    Language: English
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