Showing 4,101 - 4,120 results of 21,030 for search '"multiplication"', query time: 0.11s Refine Results
  1. 4101

    Teaching Work and Inequality in Argentina: Heterogeneity and Dynamism in Educational Research by Vassiliades Alejandro

    Published 2024-12-01
    “…The issue of the multiple links between teachers’ work, schooling processes, and social inequalities has been one of the greatest concerns in the field of educational research in Argentina in recent decades. …”
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  2. 4102

    A Parameterized Splitting Preconditioner for Generalized Saddle Point Problems by Wei-Hua Luo, Ting-Zhu Huang

    Published 2013-01-01
    “…By analyzing the eigenvalues of the preconditioned matrix, we find that when α is big enough, it has an eigenvalue at 1 with multiplicity at least n, and the remaining eigenvalues are all located in a unit circle centered at 1. …”
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  3. 4103

    Geographical routing and participant collaboration model based communication mechanism of WSAN by Haijun ZHAO, Chunlin HE, Bin PU, Mengtian CUI

    Published 2019-07-01
    “…The communication mechanism of wireless sensor and actor network (WSAN) was studied.Firstly,a proactive location management mechanism based on the update messages sent by mobile actors to sensors and the actors’ scope limited by Voronoi diagram was proposed.Thus,sensors predicted the movement of actors using Kalman filtering of the previously received updates.Then,an optimal energy-aware forwarding rule based on geographical routing was presented for sensor-actor communication,and the delay of the data delivery process was controlled using the power control and the network congestion was dealed with by forcing multiple actors to share the traffic generated in the event area.Finally,based on the characteristics of multiple concurrent events,a model for actor-actor coordination was proposed to coordinate their movements in order to optimally accomplish the tasks.Performance simulation results show that the proposed cooperative communication mechanism for WSAN can effectively reduce end-to-end delays,energy consumption and percentage of packet drops.…”
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  4. 4104

    Hypercalcemia, Acute Kidney Injury, and Metabolic Alkalosis by Faten Aqeel, Jennifer Del Castillo, Bernard G. Jaar, Mohamad Hanouneh

    Published 2022-01-01
    “…Calcium regulation is tightly controlled in the body. Multiple causes of hypercalcemia have been studied including primary hyperparathyroidism, hypercalcemia of malignancy, and chronic granulomatous disorders. …”
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  5. 4105

    An Investigation on Users’ Perceptions of Open Government Data in Qatar by Rima Charbaji El-Kassem, Ali Al-Kubaisi

    Published 2025-01-01
    “…Data collected from 1426 respondents through a questionnaire were analyzed using multiple quantitative approaches, including importance-performance analysis (IPA)–based strengths, weaknesses, opportunities, and threats (SWOT) analysis; gap analysis; factor analysis; multiple regression; and path analysis. …”
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  6. 4106

    Novel Chaos Secure Communication System Based on Walsh Code by Gang Zhang, Niting Cui, Tianqi Zhang

    Published 2015-01-01
    “…It has been proved that the novel multiuser CDSK-DCSK has better properties than traditional Multiple Input Multiple Output-Differential Chaos Shift Keying (MIMO-DCSK) and Modified-Differential Chaos Shift Keying (M-DCSK). …”
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  7. 4107

    Phase-Feeding the Beef Herd for Improved Feed Utilization by Matt Hersom

    Published 2005-12-01
    “…Phase feeding in the dairy industry is implemented based on placing cows into multiple feeding groups based on their lactation status. …”
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  8. 4108

    Azimuth/Elevation Directional Finding with Automatic Pair Matching by Nizar Tayem

    Published 2016-01-01
    “…We addressed the problem of two-dimensional (2D) direction-of-arrival (DOA) elevation and azimuth angles estimation for multiple uncorrelated signals using L-shaped antenna array configuration. …”
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  9. 4109

    Time synchronization method for wireless sensor networks based on mobile reference nodes by Yu-qiang ZHANG, Jing-sha HE, Jing XU, Bin ZHAO, Fang-bo CAI

    Published 2015-11-01
    “…Most existing time synchronization methods in wireless sensor networks depend on the existence of one or more fixed reference nodes and on the propagation of synchronization messages in the networks.Thus,they often suffer from the disadvantages of high energy consumption and large cumulative error due to multiple layers of communication.To address such issues,a new time synchronization method based on a mobile reference node and the optimal mobile path is proposed.Firstly,the cellular coverage technique is analyzed to identify the optimal synchronization points.Then,the optimal mobile path with minimal length is designed.Finally,an efficient single hop time synchronize mechanism based on multiple timestamps in the MAC layer is presented.Comparison with other methods shows that the proposed method can achieve both higher synchronization accuracy and lower energy consumption.…”
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  10. 4110

    Contention graph based concurrent scheduling algorithm in millimeter wave WPAN by Yibing WANG, Yong NIU, Weiguang DING, Hao WU

    Published 2019-01-01
    “…The directional antennas and beamforming techniques in millimeter wave (mmWave) bands are used to make concurrent transmission between multiple flows become possible.However,higher mutual interference may be caused by concurrent transmission.Therefore,when the time slots were limited and the number of data flows was large,how to schedule the concurrent flows efficiently was solved by proposed algorithm.The contention graph based spatial-time division multiple access (CB-STDMA) concurrent scheduling algorithm guaranteed the quality of service (QoS) of users,and aimed at maximizing the number of flows with their QoS requirements satisfied.It considered the interference between different flows,and a higher priority was given to the flow with fewer time slots requirement.Extensive simulations demonstrated that the proposed CB-STDMA algorithm increased the number of flows with their QoS requirements satisfied and the network throughput by 50% and 20% respectively compared with the existing algorithms.…”
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  11. 4111

    The algorithm for creation of 2d network by Vytautas Kleiza, Jonas Kleiza

    Published 2005-12-01
    “… The research presents the program module for calculation of net area of 2d multiple connected region is created. The program is written in language of the mathematical package Maple. …”
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  12. 4112

    Successful treatment of rosacea by trephination combined with photodynamic therapy: A case report by YunMi Qiu, Ping Yang, Xingyun Zhao, Yingzhi Luo, Liming Wu, Jianbo Zhong

    Published 2025-02-01
    “…Patients often suffer from multiple symptoms of rosacea, requiring more precise assessments and individualized therapies [2]. 5-Aminolevulinic acid photodynamic therapy (ALA-PDT) has shown promise as a safe and effective treatment for rosacea [3], especially in patients with multiple subtypes. …”
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    Article
  13. 4113

    Reflectance of Biological Turbid Tissues under Wide Area Illumination: Single Backward Scattering Approach by Guennadi Saiko, Alexandre Douplik

    Published 2014-01-01
    “…Various scenarios of light propagation paths in turbid media (single backward scattering, multiple backward scattering, banana shape) are discussed and their contributions to reflectance spectra are estimated. …”
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  14. 4114

    Near-Optimal Efficient MIMO Receiver for Miniature UAV-IoT Communications by Anas Saci, Arafat Al-Dweik, Shihab Jimaa

    Published 2024-01-01
    “…This article proposes a novel Direct Detection (DD) scheme for multiple-input multiple-output (MIMO) unmanned aerial vehicle (UAV) communications where tedious, slow, and computationally demanding channel state information (CSI) estimation and detection processes are not required. …”
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  15. 4115

    Transmitter selection and receiver placement for target parameter estimation in cooperative radar‐communications system by Liming Wang, Qian He, Huiyong Li

    Published 2022-09-01
    “…Abstract Target parameter estimation is considered for the cooperative multiple‐input multiple‐output (MIMO) radar and MIMO communications system. …”
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  16. 4116

    A Novel Parallel Ant Colony Optimization Algorithm for Warehouse Path Planning by Junqi Yu, Ruolin Li, Zengxi Feng, Anjun Zhao, Zirui Yu, Ziyan Ye, Junfeng Wang

    Published 2020-01-01
    “…Through the interaction of pheromones among multiple subcolonies, the coevolution of multiple subcolonies is realized and the operational capability of the algorithm is improved. …”
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  17. 4117

    Constellation Optimization for MIMO VLC System With Signal-Dependent Noise: Receiver-Side Design and Lookup Table Establishment by Jiaqi Wei, Yuan Wang, Nuo Huang, Yan-Yu Zhang, Yi-Jun Zhu, Wenliang Hao, Chen Gong

    Published 2025-01-01
    “…This paper studies the constellation optimization approach for multiple-input multiple-output (MIMO) visible light communication (VLC) systems with signal-dependent noise (SDN). …”
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  18. 4118

    WLAN Technologies for Audio Delivery by Nicolas-Alexander Tatlas, Andreas Floros, Thomas Zarouchas, John Mourjopoulos

    Published 2007-01-01
    “…The most challenging aspect of such integration relates the synchronized and robust real-time streaming of multiple audio channels to multipoint receivers, for example, wireless active speakers. …”
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  19. 4119

    From the Guest Editors by Alberto d’Onofrio, Paola Cerrai, Alberto Gandolfi

    Published 2012-11-01
    “…Tumors are characterized not only by thecoexistenceof multiple scales, both temporal and spatial, but also by multiple and quitedifferent kinds of interactions, from chemical to mechanical. …”
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  20. 4120

    Recurrent Obscure Gastrointestinal Bleeding: Dilemmas and Success with Pharmacological Therapies. Case Series and Review by Majid Almadi, Peter M Ghali, Andre Constantin, Jacques Galipeau, Andrew Szilagyi

    Published 2009-01-01
    “…All three patients underwent multiple investigations. An intervening complicating diagnosis or antiplatelet drugs may have compounded long-term bleeding in two of the cases. …”
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