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4321
Incorporating a Bayesian Network into Two-Stage Stochastic Programming for Blood Bank Location-Inventory Problem in Case of Disasters
Published 2019-01-01“…The subsequent operational stage is composed of multiple periods, some of which may suffer disasters and initiate corresponding rescue operations. …”
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4322
Robust Localization in Distributed MIMO Radar Using Delay and Angle Measurements with Impulsive Noise Robust TD/AOA Localization in Impulsive Noise
Published 2021-01-01“…This paper considers target localization using time delay (TD) and angle of arrival (AOA) measurements in distributed multiple-input multiple-output (MIMO) radar. Aiming at the problem that the localization performance of existing algorithms degrades sharply in the presence of impulsive noise, we propose a novel localization algorithm based on ℓp-norm minimization and iteratively reweighted least squares (IRLS). …”
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4323
Optimization of Building Exit Layout: Combining Exit Decisions of Evacuees
Published 2021-01-01“…Exits are essential to the efficiency of building evacuation due to its irreplaceable function, and the layout of multiple exits has always been the key concern for architectural design. …”
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4324
Improved Tomlinson–Harashima Precoding for Ultra Reliable Communication in Intelligent Transportation Systems
Published 2021-01-01“…Aiming at the technical challenges of information transmission caused by the fading effect and the fast time-varying characteristics of the channel for C-V2X communication, an improved Tomlinson–Harashima precoding (THP) algorithm for multiple input multiple output (MIMO) systems is proposed. …”
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4325
Abastecimento alimentar em contextos de crise: uma análise sobre o Haiti
Published 2024-07-01“…Historically and currently, the Republic of Haiti has faced multiple crises which have had an intense and direct impact on its population. …”
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4326
Perceived stress and its psychosocial and clinical correlates among patients with pulmonary tuberculosis: A cross-sectional study
Published 2023-01-01“…Assumptions of linear regression were checked. Multiple regression analysis was done to identify statistically significant association at P < 0.05. …”
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4327
Effects of Differently Located Clearance on the Dynamic Responses of a Two-Degree-of-Freedom Vibration System
Published 2021-01-01“…The mechanical model of a two-degree-of-freedom forced harmonic vibration system with multiclearance rigid constraints is established, considering the location schemes of symmetrical both-sided clearance and asymmetrical multiple clearance. Existence domains, correlative distributions, and bifurcation scenarios of periodic vibrations are analyzed using multiparameter and multiperformance cosimulation. …”
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4328
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4329
Les représentations sociales pour cerner l’évolution des conceptions de la forêt québécoise : une analyse autour du documentaire L’erreur boréale
Published 2017-05-01“…The multiplicity of ways to apprehend nature and the environment necessarily transpose to the understanding of forests. …”
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4330
Las dos caras del veganismo: beneficios y riesgos en la salud de una dieta vegana
Published 2023-01-01“…Al final, se identifican múltiples vacíos en el conocimiento.…”
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4331
Abelia x grandiflora 'Edward Goucher'
Published 2004-10-01“… Glossy abelia is a fine-textured, semi-evergreen, sprawling shrub with 1.5-inch-long, red-tinged leaves arranged along thin, arching, multiple stems (Figure 1). It is a hybrid between A. chinensis and A. uniflora. …”
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4332
Multi-satellite cooperative beam hopping resource allocation based on interference perception
Published 2023-08-01“…Beam hopping (BH) technology is one of effective ways to solve limitation of beam resources and enhance the system coverage ability of low earth orbit (LEO) satellite systems.Existing research typically considers beam hopping resource allocation for a single LEO satellite, however, the actual LEO system is covered by multiple satellites in multiple orbits, and existing research ignores beam interference between satellites, which can easily lead to a decrease in system throughput and service quality.To address these issues, this paper designs an interference aware cooperative resource allocation for LEO with beam hopping (IARA-BH), aiming to maximize the beam service satisfaction (BSS).A BH resource allocation scheme by multi satellite interference coordination based on simulated annealing algorithm (MSIC-SAA) is proposed to solve the optimization problem.Simulation experiments show that compared to beam hopping resource allocation schemes that only consider a single satellite, the BSS of the MSIC-SAA algorithm has been improved by 47.24%, the average signal to interference noise ratio (SINR) has been improved by 27.40%, and the system throughput has been improved by 22.92%.…”
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4333
Serial intrauterine transfusion for severe fetal anemia due to anti-M alloimmunization
Published 2024-12-01“…The peak systolic velocity in the fetal middle cerebral artery (PSV-MCA) was 1.44 multiples of the median corresponding to fetal anemia. …”
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4334
Technological Tool for Formative Assessment in Higher Education: ZipGrade
Published 2025-01-01“…Challenges such as the necessity for physical printing of answer sheets, a predisposition towards multiple-choice questions, and infrastructural and policy-related barriers were identified, suggesting areas for further development and support. …”
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4335
Knowing What You Need But Not What You Want: Affordances and Action-Defined Templates in Neglect
Published 2002-01-01“…For both action and name-defined targets, there were also larger effects of the number of distractors when search was for multiple rather than single targets, even when the numbers of distractors were kept constant. …”
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4336
Design of fairness-driven RSMA-SDMA precoding
Published 2022-04-01“…In view of the minimum user rate and system fairness when the transmit power was limited, a user access mode selection transmission strategy by joint rate-splitting multiple access (RSMA) and space division multiple access (SDMA) was proposed.The precoding design problem of maximizing system fairness was modeled.In order to solve the discrete non-convex optimization problem formed, it was decomposed into two non-convex sub-problems, such as the user access mode selection and the inner optimal precoding design.For the precoding design, a quadratic transform of multidimensional and complex FP was used to transform the precoding design into double rotation, and the closed-form expression of the optimal solution for the outer user access mode selection was obtained.Convex optimization was used to solve the inner precoding design problem, and successively optimize the user access mode selection.An algorithm based on fractional optimization was proposed for the problem, and the optimal precoding vector was designed using the quadratic transform of multidimensional and complex FP to maximize the minimum user rate under power constraints.The simulation results prove that compared with RSMA, SDMA and other transmission strategies, the fairness-driven RSMA-SDMA precoding design improves the minimum user rate of the system and guarantees the system fairness.…”
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4337
Time Varying Reliability Analysis of the MG 400/951 Shearer Cutting Part Planet Carrier
Published 2022-01-01“…Combined with reliability sensitivity design theory,the influence of multiple weak areas design variables on the time-varying reliability of the cutting part planet carrier is analyzed. …”
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4338
Environment-aware based access point deployment optimization for cell-free massive MIMO system
Published 2024-02-01“…Cell-free massive multiple-input multiple-output (MIMO) systems deploy a large number of access point (AP) across the coverage area which can provide uniform high-rate services to users.However, the quality of coverage would be affected by path loss, shadow fading scatters, and environmental occlusions around the randomly placed AP in conventional cell-free massive MIMO systems that do not consider their impact.Considering the impact of actual wireless propagation environments, an AP deployment scheme was proposed to acquire uniform and consistent coverage.Firstly, a hybrid probabilistic path loss model was utilized to characterize various wireless propagation environments.Then, the AP deployment optimization problem was solved with the objective of maximizing the average throughput.Finally, the problem was transformed into a Markov game process and solved by the multi-agent deep deterministic policy gradient (MADDPG) algorithm.The simulation results demonstrate that the proposed scheme can provide more uniform coverage in complex environments and serve users with reliable and consistent service compared to random AP deployment and existing AP deployment methods.…”
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4339
Multi-function supported privacy protection data aggregation scheme for V2G network
Published 2023-04-01“…In view of the problem that the functions of the current privacy protection data aggregation scheme were insufficient to meet the increasingly rich application requirements, a multi-function supported privacy protection data aggregation (MFPDA) scheme for V2G network was proposed.By using cryptographic algorithms such as BGN, BLS, and Shamir’s secret sharing, as well as fog computing and consortium blockchain technology, multiple security functions like fault tolerance, resistance to internal attacks, batch signature verification, no need for trusted third parties, and multiple aggregation functions were integrated into one privacy protection data aggregation scheme.Security analysis shows that the proposed scheme can protect data aggregation’s security, privacy and reliability.The performance evaluation shows that the introduction of fog computing can significantly reduce the computing overhead of the control center, and the reduction rate can be as high as 66.6%; the improvement of the consortium blockchain can effectively reduce the communication and storage overhead of the system, and the reduction rate can reach 16.7% and 24.9% respectively.…”
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4340
The Rank-One property for free Frobenius extensions
Published 2023-10-01“…A conjecture by the second author, proven by Bonnafé–Rouquier, says that the multiplicity matrix for baby Verma modules over the restricted rational Cherednik algebra has rank one over $\mathbb{Q}$ when restricted to each block of the algebra.In this paper, we show that if $H$ is a prime algebra that is a free Frobenius extension over a regular central subalgebra $R$, and the centre of $H$ is normal Gorenstein, then each central quotient $A$ of $H$ by a maximal ideal $\mathfrak{m}$ of $R$ satisfies the rank-one property with respect to the Cartan matrix of $A$. …”
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