Online job allocation with hard allocation ratio requirement

2016 ◽  
Author(s):  
Han Deng ◽  
I-Hong Hou
Keyword(s):  
Ratio Requirement ◽  
Job Allocation ◽  
Allocation Ratio

scholarly journals Communication and cooling aware job allocation in data centers for communication-intensive workloads

2016 ◽  
Vol 96 ◽  
pp. 181-193 ◽  
Author(s):  
Jie Meng ◽  
Eduard Llamosí ◽  
Fulya Kaplan ◽  
Chulian Zhang ◽  
Jiayi Sheng ◽  
...  
Keyword(s):  
Data Centers ◽  
Job Allocation

scholarly journals Design and Optimization for UAV-Enabled Two-Way Relaying System with SWIPT

2020 ◽  
Author(s):  
Jinlong Wang ◽  
Gang Wang ◽  
Guanyi Chen ◽  
Bo Li ◽  
Ruofei Zhou ◽  
...  
Keyword(s):  
Optimization Problem ◽  
Signal To Noise Ratio ◽  
Power Splitting ◽  
Generalized Singular Value Decomposition ◽  
Ratio Requirement ◽  
Design And Optimization ◽  
Aerial Vehicle ◽  
Resource Allocation Scheme ◽  
Value Decomposition ◽  
Relaying System

Abstract In this paper, we investigate the resource allocation scheme for an unmanned-aerial-vehicle-enable (UAV-enabled) two-way relaying system with simultaneous wireless information and power transfer (SWIPT), where two userequipment exchange information with the help of UAV relay and harvest energythrough power splitting (PS) scheme. Under the transmission power constraintsat UEs and UAV relay, a non-convex intractable optimization problem isformulated which maximizes the sum retained energy of two UEs while satisfying the minimum signal-to-noise ratio requirement. We decouple the complicated beamforming and PS factors optimization problem into three solvable subproblems and propose an efficient alternating optimization scheme. Subsequently, in order to reduce the complexity, a robust scheme based on generalized singular value decomposition (GSVD) is designed. Finally, numerical results verify the robustness and effectiveness of two proposed schemes.

The Use of Seniority in Labour Selection and Job Allocation

1989 ◽  
Vol 31 (1) ◽  
pp. 46-68 ◽  
Author(s):  
Duncan Macdonald
Keyword(s):  
Case Studies ◽  
Business Management ◽  
Economic Rationality ◽  
Or Efficiency ◽  
Apparent Contradiction ◽  
Job Allocation ◽  
Labour Process ◽  
Work Tasks ◽  
The Many ◽  
Selection Of

One of the many causes of conflict within the labour process is choice of an appropriate criterion for the selection of labour and the allocation of work tasks. While merit, as a proxy for productivity or efficiency, is appropriate according to economic rationality and the principles of business management, evidence abounds of the prevalence of seniority as the criterion most used. In an attempt to explain this apparent contradiction it is hypothesised that, in many cases, management is obliged to utilise seniority because the costs of insisting upon merit are too high. These costs, in turn, are claimed to result from three factors: the difficulties of measuring merit, workers' attachment to the seniority principle and external constraints on having merit predominate. Evidence from a variety of case studies is presented in support of the hypothesis.

scholarly journals Effectiveness of using a meditation app in reducing anxiety and improving well-being during the COVID-19 pandemic: A structured summary of a study protocol for a randomized controlled trial

Trials ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Katherine T. O’Donnell ◽  
Melanie Dunbar ◽  
Diana L. Speelman
Keyword(s):  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Well Being ◽  
Intervention Period ◽  
Post Intervention ◽  
Randomized Controlled ◽  
Survey Questions ◽  
Full Protocol ◽  
Allocation Ratio ◽  
Survey Responses

Abstract Objectives This interventional study will investigate the effect of daily use of a mindfulness app on measures of participant anxiety, well-being, and perceived outlook during the COVID-19 pandemic, by comparing pre-intervention survey responses to post-intervention survey responses. Trial design Randomized, controlled trial with parallel assignment. Adults will be assigned either to daily use of a meditation app for 30 days or to a control group (no usage of meditation app) with a 1:1 equivalence allocation ratio. Participants Inclusion Criteria: Participants must be 18 or older, have a smartphone, able to download apps to their smartphone, must be fluent in the English language, able to complete surveys on their own, and must be in the United States for the duration of the study. Exclusion Criteria: Current regular use of a mindfulness or meditation app, regular practice of mindfulness or meditation, regular therapy sessions, inability to complete surveys independently, or any mental health restrictions that would prevent participation. All data will be collected through the Insight Timer Meditation App and Google Forms. This trial is being conducted through the Lake Erie College of Osteopathic Medicine in Erie, PA, with all data collected digitally. Intervention and comparator Intervention: Participants will be sent a link to a pre-intervention survey prior to first use of the mindfulness app. Participants will be instructed to use the Insight Timer app for 10 minutes daily for 30 days. At the end of the 30-day intervention period, participants will be sent a link for the post-intervention survey. Two months after the conclusion of the 30-day intervention period, participants will be sent a link for another post-intervention survey. Comparator: Participants will receive the same surveys, but will not use any mindfulness app for the 30-day intervention period. After this 30-day period, participants are invited to use the Insight Timer app if they so choose. Main outcomes The main outcomes are (1) anxiety as assessed by survey questions adapted from the GAD7, comparing pre-intervention to post-30-days of app usage and (2) well-being as assessed by survey questions adapted from the WHO-5, comparing pre-intervention and post-30-days of app usage. Randomization Participants will be allocated to interventions via a block random sequence generator with a 1:1 allocation ratio in blocks of 8. Blinding (masking) No masking is being used in this study (open label). Numbers to be randomized (sample size) Approximately 75 participants will be randomized to each group, with an estimated enrollment of 150 participants. Trial status This study is protocol version number 27-126 and was approved on May 10, 2020. Recruitment began on August 19, 2020 and will end February 28, 2021. The study is estimated to complete on April 30, 2021. Trial registration This trial was registered to ClinicalTrials.gov on 30 April 2020. The ClinicalTrials.gov Identifier is NCT04369378. Full protocol The full protocol is attached as an additional file, accessible from the Trials website (Additional File 1). In the interest in expediting dissemination of this material, the familiar formatting has been eliminated; this Letter serves as a summary of the key elements of the full protocol.

scholarly journals Minimum Short Circuit Ratio Requirement for MMC-HVDC Systems Based on Small-Signal Stability Analysis

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3283 ◽  
Author(s):  
Zheren Zhang ◽  
Liang Xiao ◽  
Guoteng Wang ◽  
Jian Yang ◽  
Zheng Xu
Keyword(s):  
Reactive Power ◽  
Short Circuit ◽  
Small Signal ◽  
Small Signal Stability ◽  
Ratio Requirement ◽  
Planning Stage ◽  
Hvdc System ◽  
Hvdc Transmission ◽  
High Voltage Direct Current ◽  
Signal Stability

This paper determines the minimum short circuit ratio (SCR) requirement for a modular multilevel converter based high-voltage direct current (MMC-HVDC) transmission systems. Firstly, a simplified model of MMC is introduced; the MMC is represented by its AC and DC side equivalent circuit. Next, by linearizing the MMC subsystem and the DC network subsystem, the deduction of the small-signal models of MMC subsystem, the small-signal model of the DC network and MMC-HVDC are carried out successively. Thirdly, the procedure for determining the minimum SCR requirement of MMC-HVDC is described. Finally, case studies are performed on a two-terminal MMC-HVDC system under four typical control schemes. The results show that the restraint factors for the rectifier MMC is predominantly the voltage safety limit constraint, and the restraint factors for the inverter MMC are mainly the phase locked loop (PLL) or the outer reactive power controller. It is suggested that the minimum SCR requirement for the sending and the receiving systems should be 2.0 and 1.5 in the planning stage.

Sign in / Sign up

Export Citation Format

Share Document