201,096 research outputs found

    Efficient Distributed Detection Of Conjunctions Of Local Predicates M. Hurfin M. Mizuno M. Raynal M. Singhal

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    : Global predicate detection is a fundamental problem in distributed systems and finds applications in many domains such as testing and debugging distributed programs. This paper presents two efficient distributed algorithms to detect conjunctive form global predicates in distributed systems. The algorithms detect the first consistent global state that satisfies the predicate even if the predicate is unstable. The algorithms are based on complementary approaches and are dual of each other. The algorithms are distributed because the predicate detection efforts as well as the necessary information is equally distributed among the processes. We prove the correctness of the algorithms and compare their performance with those of the existing predicate detection algorithms. The proposed algorithms compare very favorably with the existing algorithms in terms of the number of messages exchanged for predicate detection. Key-words: Distributed systems, On the fly global predicate detection (R'..

    Organizing for Social Change: A Dialectic Journey of Theory and Praxis

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    Papa, M. J., Singhal, A., & Papa, W. H. (2006). Organizing for social change : a dialectic journey of theory and praxis. New Delhi ; Thousand Oaks : Sage Publications, 2006

    Cytokine levels in major depression are related to childhood trauma but not to recent stressors

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    Abstract not availableLaura Grosse, Oliver Ambrée, Silke Jörgens, M. Catharine Jawahar, Gaurav Singhal, David Stacey, Volker Arolt, Bernhard T. Baun

    sj-docx-1-jct-10.1177_23800844221074354 – Supplemental material for Effect of Overweight and Obesity on Periodontal Treatment Intensity

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    Supplemental material, sj-docx-1-jct-10.1177_23800844221074354 for Effect of Overweight and Obesity on Periodontal Treatment Intensity by E. Kaye, R. McDonough, A. Singhal, R.I. Garcia and M. Jurasic in JDR Clinical & Translational Research</p

    Joint failure recovery, fault prevention, and energy-efficient resource management for real-time SFC in fog-supported SDN

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    Middleboxes have become a vital part of modern networks by providing services such as load balancing, optimization of network traffic, and content filtering. A sequence of middleboxes comprising a logical service is called a Service Function Chain (SFC). In this context, the main issues are to maintain an acceptable level of network path survivability and a fair allocation of the resource between different demands in the event of faults or failures. In this paper, we focus on the problems of traffic engineering, failure recovery, fault prevention, and SFC with reliability and energy consumption constraints in Software Defined Networks (SDN). These types of deployments use Fog computing as an emerging paradigm to manage the distributed small-size traffic flows passing through the SDN-enabled switches (possibly Fog Nodes). The main aim of this integration is to support service delivery in real-time, failure recovery, and fault-awareness in an SFC context. Firstly, we present an architecture for Failure Recovery and Fault Prevention called FRFP; this is a multi-tier structure in which the real-time traffic flows pass through SDN-enabled switches to jointly decrease the network side-effects of flow rerouting and energy consumption of the Fog Nodes. We then mathematically formulate an optimization problem called the Optimal Fog-Supported Energy-Aware SFC rerouting algorithm (OFES) and propose a near-optimal heuristic called Heuristic OFES (HFES) to solve the corresponding problem in polynomial time. In this way, the energy consumption and the reliability of the selected paths are optimized, while the Quality of Service (QoS) constraints are met and the network congestion is minimized. In a reliability context, the focus of this work is on fault prevention; however, since we use a reallocation technique, the proposed scheme can be used as a failure recovery scheme. We compare the performance of HFES and OFES in terms of energy consumption, average path length, fault probability, network side-effects, link utilization, and Fog Node utilization. Additionally, we analyze the computational complexity of HFES. We use a real-world network topology to evaluate our algorithm. The simulation results show that the heuristic algorithm is applicable to large-scale networks. (C) 2019 Elsevier B.V. All rights reserved

    Dr. Duane M. Jackson, Morehouse College, July 2011

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    This video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer

    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.

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    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states. By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement. To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods
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