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Multiple description coding with spatial-temporal hybrid interpolation for video streaming in peer-to-peer networks

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第5期7卷 894-899页

作者： YAO jason CHEN Homer H Graduate Institute of Communication Engineering

In this paper, we present an innovative design of multiple description coding with spatial-temporal hybrid interpola- tion (MDC-STHI) for peer-to-peer (P2P) video streaming. MDC can be effective in P2P networks because the nature of overlay routing makes path diversity more feasible. However, most MDC schemes require a redesign of video coding systems and are not cost-effective for wide deployment. We base our work on multiple state video coding, a form of MDC that can utilize standard codecs. Two quarter-sized video bit streams are generated as redundancies and embedded in the original-sized streams. With MDC-STHI, the nodes in P2P network can adjust the streaming traffic to satisfy the constraints of their devices and network environment. By design, the redundancies are used to compensate for missing frames, and can also be streamed independently to fulfill certain needs of low rate, low resolution applications. For better error concealment, optimal weights for spatial and temporal interpolation are determined at the source, quantized, and included in redundancies.

关键词： P2P streaming, Multiple state video coding, Multiple description coding (MDC)

Review of idiopathic pancreatitis

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World Journal of Gastroenterology 2007年第47期13卷 6295-6313页

作者： jason Kihyuk Lee Robert Enns University of British Columbia Department of Medicine VancouverBritish ColumbiaCanada University of British Columbia Department of Medicine Division of GastroenterologySt. Paul's HospitalVancouverBritish ColumbiaCanada

Recent advances in understanding of pancreatitis and advances in technology have uncovered the veils of idiopathic pancreatitis to a point where a thorough history and judicious use of diagnostic techniques elucidate the cause in over 80% of cases. This review examines the multitude of etiologies of what were once labeled idiopathic pancreatitis and provides the current evidence on each. This review begins with a background review of the current epidemiology of idiopathic pancreatitis prior to discussion of various etiologies. Etiologies of medications,infections,toxins,autoimmune disorders,vascular causes,and anatomic and functional causes are explored in detail. We conclude with management of true idiopathic pancreatitis and a summary of the various etiologic agents. Throughout this review,areas of controversies are highlighted.

关键词： Idiopathic pancreatitis Recurrence, Etiology, Endoscopic retrograde cholangiopancreatography, Magnetic resonance cholangiopancreatography, Sphincter of Oddi dysfunction

Metal-insulator-semiconductor(MIS) photoelectrodes: distance improves performance

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National Science Review 2021年第8期8卷 7-8页

作者： Joshua Jack Zhiyong jason Ren Department of Civil and Environmental Engineering and the Andlinger Center for Energy and the Environment Princeton University

Hydrogen（H2） is a clean energy carrier with enormous potential to support deep decarbonization towards net-zero and a circular carbon economy. However, H2production itself can be carbon and energy intensive, as 96% of global H2synthesis is currently conducted via thermochemical processes such as steam reforming and coal gasification that rely on fossil fuels [1].

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A Dilemma of Language: “Natural Disasters” in Academic Literature

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International Journal of Disaster Risk Science 2019年第3期10卷 283-292页

作者： Ksenia Chmutina jason von Meding School of Architecture Building and Civil EngineeringLoughborough UniversityLoughborough LE113TUUK Florida Institute for Built Environment Resilience Universityof FloridaGainesvilleFL32611USA

For decades sections of the academic community have been emphasizing that disasters are not ***, politicians, the media, various international organizations—and, more surprisingly, many established researchers working in disaster studies—are still widely using the expression 'natural disaster.' We systematically analyzed the usage of the expression 'natural disaster' by disaster studies researchers in 589 articles in six key academic journals representative of disaster studies research,and found that authors are using the expression in three principal ways:(1) delineating natural and human-induced hazards;(2) using the expression to leverage popularity;and(3) critiquing the expression 'natural disaster.' We also identified vulnerability themes that illustrate the context of 'natural disaster' usage. The implications of continuing to use this expression, while explicitly researching human vulnerability, are wide-ranging, and we explore what this means for us and our peers. This study particularly aims to stimulate debate within the disaster studies research community and related fields as to whether the term 'natural disaster' is really fit for purpose moving forward.

关键词： Academic communication Disasters Natural hazards Language

A longitudinal analysis of the U.S. Air Force Reserve Officers’ Training Corps physical fitness assessment

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Military Medical Research 2020年第2期7卷 166-173页

作者： Cameron SMackey jason MDe Freitas Applied Neuromuscular Physiology Laboratory Oklahoma State University192 CRCStillwaterOK 74078USA

Background:The *** Force physical fitness assessment(PFA)is used to determine the overall fitness of their *** is currently unknown to what extent the PFA scores of Reserve Officers’Training Corps(ROTC)cadets are affected by mandatory physical *** purpose of this investigation was to longitudinally examine the PFAs of ROTC cadets over a four-year period,evaluate the results across class ranks,and evaluate the sensitivity of the classification of the ***:Air Force ROTC cadets performed the PFAs(abdominal circumference,1-min pushups,1-min sit-ups,and a 1.5-mile run)in both the spring(n=26)and fall(n=22)*** were compiled over a four-year period(Spring 2014–Fall 2017)and were performed in accordance with Air Force Instruction 36–2905.A oneway repeated measures ANOVA was performed separately for the fall and spring groups for each dependent variable across the 4 ***,a one-way between groups ANOVA was performed for each dependent variable during the time point(fall 2015;n=46)with the most recorded cadets for each class ***:Longitudinal assessments revealed a main effect of time(P=0.010)on abdominal circumference;cadets had a smaller abdominal circumference in their freshman year than in their senior year.A main effect of time(P=0.006)was also observed on sit-up quantity;cadets performed more sit-ups in their junior year than in their freshman *** between class ranks during the same year(between-subjects ANOVA)revealed a main effect of class rank on sit-up quantity(P=0.003);the freshmen completed fewer repetitions than the sophomores(P=0.018)and the juniors did(P=0.001).Conclusions:The results indicated that only the sit-up component showed differences between class *** findings suggest that the Air Force PFA may not be sensitive enough to detect changes in physical fitness or distinguish between class ranks regarding physical performance,even after years of *** limitation may b

关键词： Class ranks Fitness assessment Military Physical training ROTC

Multimodal intravascular imaging technology for characterization of atherosclerosis

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Journal of Innovative Optical Health Sciences 2020年第1期3卷 82-96页

作者： Yan Li jason Chen Zhongping Chen Beckman Laser Institute University of CaliforniaIrvine 1002 Health Sciences RoadIrvineCA 92617 USA Department of Biomedical Engineering University of California IrvineCA 92697-2700 USA

Early detection of vulnerable plaques is the critical step in the prevention of acute coronary ***,composition,and mechanical property of a coronary artery have been demonstrated to be the key characteristics for the identification of vulnerable *** intravascular multimodal imaging technologies providing co-registered simultaneous images have been developed and applied in clinical studies to improve the characterization of *** this paper,the authors review the present system and probe designs of representative intra-vascular multimodal *** addition,the scientific innovations,potential limitations,and future directions of these technologies are also discussed.

关键词： Multimodal intravascular imaging photoacoustic ultrasound optical coherence tomography near-infrared fluorescence spectroscopy atherosclerosis imaging probe

A Longitudinal Study of Human Exposure to Potential Nuclear Power Plant Risk

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International Journal of Disaster Risk Science 2015年第4期6卷 399-414页

作者： Dean Kyne jason T.Harris Department of Sociology and Anthropology The University of Texas Rio Grande Valley School of Health Sciences Purdue University

This study constructs a potential risk index(PRI) for the 65 U.S.-based commercial nuclear power plant(NPP) sites in relation to their surrounding populations. Four risk levels are defined: low risk, moderate risk,high risk, and very high risk. Discrepancies that exist in the sociodemographic characteristics of the host communities’ populations are examined as sorted by risk-level *** is found that a greater percentage of minority groups are exposed to the highest levels of risk. In addition, percent 'Hispanic' and percent 'Other,'a grouping that includes multiracial, mixed, interracial, as well as Hispanic and Latino groups(for example, Mexican, Puerto Rican,Cuban, or Spanish) are categories that show the greatest percent change in both the period 1990–2000 and2000–2010.

关键词： Environmental justice Nuclear power induced disaster Nuclear power plant Potential risk index

Data-driven resilience analysis of power grids

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Global Energy Interconnection 2021年第1期4卷 104-114页

作者： Qicong Sun Yan Li jason Philhower School of Automation and Electrical Engineering Beihang UniversityBeijing100010P.R.China Department of Electrical Engineering The Pennsylvania State UniversityUniversity ParkPA16802 USA Department of Electrical and Computer Engineering University of ConnecticutStorrsCT06269 USA

With the integration of renewable energy resources,the inertia of power systems significantly reduces,thereby making the system sensitive to operational disturbances.A disturbance-based method is presented herein to estimate inertia,uncovering the influence of renewables on system-resilient *** Gaussian process regression method is then used to predict the power system trajectory after *** tests demonstrate the data-driven method mathematically estimates the inertia of the system as well as predicts the dynamics operations of power grids subject to *** results also offer insights into the enhancement of system resilience by strategically designing the inertia of power systems.

关键词： Inertia Data-driven Gaussian process regression Renewable energy sources

INTELLIGENT SECURITY SYSTEMS ENGINEERING FOR MODELING FIRE CRITICAL INCIDENTS:TOWARDS SUSTAINABLE SECURITY

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Journal of Systems Science and Systems Engineering 2009年第4期18卷 477-488页

作者： Ali ASGARY Ali SADEGHI NAINI jason LEVY Emergency Management York University Faculty of Geography University of Tehran Department of Electrical and Computer Engineering University of Western Ontario Homeland Security and Emergency Preparedness Virginia Commonwealth University

An intelligent security systems engineering approach is used to analyze fire and explosive critical incidents, a growing concern in urban communities. A feed-forward back-propagation neural network models the damages arising from these critical incidents. The overall goal is to promote fire safety and sustainable security. The intelligent security systems engineering prediction model uses a fully connected multilayer neural network, and considers a number of factors related to the fire or explosive incident including the type of property affected, the time of day, and the ignition source. The network was trained on a large number of critical incident records reported in Toronto, Canada between 2000 and 2006. Our intelligent security systems engineering approach can help emergency responders by improving cr^tical incident analysis, sustainable security, and fire risk management.

关键词： Intelligent security systems engineering fire feed-forward neural networks critical incidents