nils-herrmann/clean_scirepeval huggingface dataset:
Joint Position and Time Allocation Optimization of UAV Enabled Time Allocation Optimization Networks
Venue: IEEE Transactions on Communications
Year: 2019

In this paper, we investigate an unmanned aerial vehicle (UAV) enabled wireless powered communication network, where the UAV with constant power supply first charges all users by transmitting wireless energy to all users simultaneously, and after that all users send their own information to the UAV. Our target is the joint optimization of the time allocation as well as the position of the UAV to make the uplink sum achievable rate for all users as large as possible. To solve this non convex problem, we first derive the analytic optimal solution of the time allocation, which is expressed as the function of UAV position. The original problem, after substituting the derived optimal time allocation, is reformulated as a new optimization problem whose optimization variable is only UAV position. We propose a sequential unconstrained convex minimization based algorithm to obtain the globally optimal solution. The simulation results demonstrate that the performance of our proposed algorithm matches with that obtained by two dimensional exhaustive search. To decrease the complexity, a Dinkelbach based algorithm to obtain the locally optimal solution is also proposed. The simulation results show that the performances of our proposed two algorithms are superior to the schemes without time allocation optimization and/or position optimization.
Progress of display performances: AR, VR, QLED, OLED, and TFT
Year: 2019

In 2018, great progress in display performances was achieved in the field of virtual reality (VR) augmented reality (AR) quantum dot light emitting diode (QLED) and organic light emitting diode (OLED) displays, in addition to the thin film transistor (TFT) for displays. In this work, the recent progress of the device performances in each display field was summarized, and the future direction of each technology was proposed.
ANTIMICROBIAL EFFECTS OF SOY PROTEIN BASED EDIBLE FILM CONTAINING OREGANO OREGANUM HERACLEOTICUM L AND THYME THYMUS VULGARIS L ESSENTIAL OILS AGAINST FOODBORNE PATHOGENS
Year: 2017

In this present study, antibacterial effects of soy protein edible coatings incorporated with different concentrations (1, 2, 3, 4 or 5% of essential oils from oregano (Oreganum heracleoticum L. or thyme (Thymus vulgaris L. essential oils (EOs) were determined against Listeria monocytogenes, Salmonella Enteritidis and Bacillus cereus. Oregano and thyme essential oils showed inhibition against all test organisms even at minimum concentration (1.0% applied into the film formulation. Soy protein coating solution without addition of essential oil had no inhibitory effect against none of the pathogenic bacteria tested. Data from antibacterial activity test reveal that soy protein films without addition of essential oil had no inhibitory effect against none of the pathogenic bacteria tested. Greater antimicrobial activity of soy edible films containing essential oils was demonstrated against S. Enteritidis followed by L. monocytogenes and B. cereus. The results of this study indicated that the oregano or thyme incorporated soy protein edible films could be a promising application for control of pathogens in food.
Effect of different chemical compounds and ultrasound bath on the sanitization of minimally processed carrots Efeito de diferentes componentes quimicos e banho de ultrassom na sanitizacao de cenouras minimamente processadas
Year: 2020

The objective of this study was to evaluate the effect of the use of different chemical compounds combined with ultrasound bath on the sanitization of minimally processed carrots. The sanitizers sodium hypochlorite, peracetic acid, and sodium dichloroisocyanurate were investigated, all of them associated with the ultrasound bath, and the aerobic mesophiles and E. coli counts were evaluated. Sodium hypochlorite associated with ultrasound reduced the population of aerobic mesophiles and E. coli by 0.23 and 1.88 log cycles, respectively. For sodium dichloroisocyanurate associated with ultrasound, the reduction was 3.06 and 2.76 log cycles, while for the association with peracetic acid, this reduction was 2.72 and 2.35 log cycles. Thus, the effect of the ultrasound bath and sodium dichloroisocyanurate increased the decontamination efficiency of the minimally processed carrots. In addition, there is an alternative to the use of sodium hypochlorite, once they are not involved in reactions with organic compounds and the formation of trihalomethanes, which are harmful to health.
Combining User Based and Item Based Collaborative Filtering Using Machine Learning
Year: 2019

Collaborative filtering (CF) is typically used for recommending those items to a user which other like minded users preferred in the past. User based collaborative filtering (UbCF) and item based collaborative filtering (IbCF) are two types of CF with a common objective of estimating target user's rating for the target item. This paper explores different ways of combining predictions from UbCF and IbCF with an aim of minimizing overall prediction error. In this paper, we propose an approach for combining predictions from UbCF and IbCF through multiple linear regression (MLR) and support vector regression (SVR) Results of the proposed approach are compared with the results of other fusion approaches. The comparison demonstrates the superiority of the proposed approach. All the tests are performed on a large publically available dataset.
Development of a THMC code for bentonites in COMSOL Multiphysics
Venue: E3S Web of Conferences
Year: 2020

The proposed use of active clays for the isolation of radioactive wastes in deep geological repositories has been followed by a deeper understanding of this type of soils. This increased knowledge has led to the need for both conceptual and numerical models capable of capturing the main trends in behaviour and the different couplings between different physical chemical phenomena. In addition, the model must have a high degree of flexibility that enables it to accommodate future developments or new relevant phenomena. This work presents a numerical THMC code developed entirely on the COMSOL Multiphysics numerical implementation platform, which provides the required adaptability. This model includes, for the first time in this environment, a reactive transport model in unsaturated porous media for a relevant geochemical system (consistent with the MX 80 bentonite) together with a THM model based on a double porosity approach. The chemical potentials of water and solutes are used for the definition of thermodynamic equilibria between both porosity levels. Trends in the behaviour of a bentonite sample under oedometric conditions are satisfactorily simulated in response to a process of saturation and change in salinity conditions. Variations in swelling pressure, porosity distribution or dissolution/precipitation of the main accessory minerals are analysed and explained by means of the proposed conceptual model.
Link prediction in heterogeneous information networks: An improved deep graph convolution approach
Venue: Decis. Support Syst.
Year: 2021

Heterogeneous information networks (HINs) refer to logical networks involving entities of multiple types and their multiple relations, which are widely used for modeling real world systems with rich features and intricate patterns. Link prediction in such networks is a consistent interesting research question due to its methodological and practical implication in the business field. This study develops an improved spatial graph convolution network to learn predictive vertex embeddings with minimal information loss based on local community discovery and to handle the complexity of link predictions in the context of HINs. An optimizable kernel layer is designed to measure the similarity of pairwise vertex embeddings. The effectiveness of the proposed method was validated using four real world HINs: WordNet, MovieLens, DBLP, and Douban. The results of the experiments demonstrated that the method outperforms several benchmark algorithms, achieving F1 scores of 87.65% 84.27% 82.99% and 89.96% on the four HINs, respectively. The findings of this study can inform the design and improvement of related information systems.
The effects of human resource flexibility, employee competency, organizational culture adaptation and job satisfaction on employee performance
Year: 2020

October 9, 2019 Received in revised format: November 25 2019  December 31,  This research aims to study and analyze the effects of human resource flexibility, employee competencies, organizational culture adaptation, and job satisfaction on employee performance. The study also examines the indirect effect between human resource flexibility and employee performance with the mediation of organizational culture adaptation and the effect of competence on employee performance through job satisfaction as a mediator variable. Using certain criteria, 105 employees of PT Pos Indonesia were selected as the sample. SEM PLS was used to test the hypotheses. The study finds that human resource flexibility, employee competencies, and job satisfaction significantly influenced employee performance, but organizational culture adaptation did not have any significant effect on employee performance. Therefore, organizational culture adaptation was unable to mediate the effect of human resource flexibility on employee performance. However, job satisfaction partially mediates the effect of employee competencies on employee performance.
The nerve branches to the external anal sphincter: the macroscopic supply and microscopic structure
Venue: Surgical and Radiologic Anatomy
Year: 2006

SummaryThe study was performed using 45 pelvic half section specimens (41 fetal ones and four adults) The macroscopic dissection followed the nerve branches from their spinal roots up to the external anal sphincter. Three nerve branches were found: the anterior ramus arising from the external perineal nerve, the inferior rectal nerve and an independent posterior branch. The anterior and the inferior rectal nerve branches always emerged from the pudendal plexus. The posterior branch arising either from S4 or from the inferior rectal nerve was only found in (31% of our cases. Five anatomical distributions are described, percentages of every type notified. The fibre content of these nerve bundle branches was evaluated through histological sections using Heidenhain's azan stain and Luxol fast blue. The branches consisted of 2,896 to 2,137 fibres, 20% of them being unmyelinated and 80% containing various myelinated fibres. The nomenclature of these nerve branches has to be debated. The terms of anterior, middle and posterior anal nerves seem more suitable.ResumeL'etude porte sur 45 hemi bassins (41 de foetus et 4 d'adultes) dont les branches nerveuses sont dissequees depuis les racines spinales jusqu'au sphincter externe de l'anus. Elles sont disposees en 3 contingents: un contingent anterieur provenant du nerf perineal externe, un moyen le nerf rectal inferieur, un posterieur independant. Les contingents anterieur et moyen toujours constants proviennent du plexus honteux. Le posterieur, present dans 31% des cas provient de S4 ou du nerf rectal inferieur. Cinq dispositions anatomiques et leur frequence relative sont decrites. Le contenu fibrillaire des nerfs est analyse sur coupes histologiques colorees selon les techniques du bleu Azan de Heidenhain et du Luxol fast blue. Le nombre total de fibres varie de 2896 a 2137 fibres, avec 20% de fibres amyeliniques et 80% de fibres myelinisees de calibre variable. La nomenclature des branches sphincteriennes est discutee. Les termes de nerfs anaux anterieur moyen et posterieur semblent preferables.
A new subjective objective approach to evaluating lighting quality A case study of concert lighting for Cambridge King s College Chapel
Year: 2014

Drawing on theoretical insights from acoustic research, this paper presents a subjective objective method that complements and unifies existing approaches to assessing lighting quality. In essence, the method establishes numerical relationships between subjective attributes and objective lighting measures, the applicability of which is demonstrated through a comparative study of four different concert light settings in Cambridge King's College Chapel. A total of 624 subjective responses were collected from a full scale experiment. These focused on seven subjective aspects: visual clarity, visual balance, visual uniformity, brightness, spatial intimacy, appropriateness/comfort, and overall impression of the luminous environment. Variations in the response were analysed systematically and correlated with 22 objective attributes, which were computed using luminance and photometric data extracted from High Dynamic Range images. This study reveals significant connections between the selected subjective parameters and the objective attributes that are used to describe a visual scene mathematically and spatially.
Multiple Adaptive Bayesian Linear Regression for Scalable Bayesian Optimization with Warm Start
Year: 2017

Bayesian optimization (BO) is a model based approach for gradient free black box function optimization. Typically, BO is powered by a Gaussian process (GP) whose algorithmic complexity is cubic in the number of evaluations. Hence, GP based BO cannot leverage large amounts of past or related function evaluations, for example, to warm start the BO procedure. We develop a multiple adaptive Bayesian linear regression model as a scalable alternative whose complexity is linear in the number of observations. The multiple Bayesian linear regression models are coupled through a shared feedforward neural network, which learns a joint representation and transfers knowledge across machine learning problems.
Breast cancer immunology and immunotherapy: targeting the programmed cell death protein 1/programmed cell death protein ligand 1
Venue: Chinese medical journal
Year: 2020

Historically, breast cancer has been regarded as an immunogenic "cold" tumor. However, the discovery of immune checkpoint inhibitors has made immunotherapy becoming an emerging new treatment modality for breast cancer. This review discusses the immune system, immune features of breast cancer, and the programmed cell death protein 1/programmed cell death protein ligand 1 (PD 1/PD L1) inhibitors used in the treatment of breast cancer. High T lymphocyte infiltration and mutation burden were observed in triple negative breast cancer and human epidermal growth factor receptor 2 positive breast cancer. Increasing breast cancer immunogenicity and modulating the tumor microenvironment has been reported to improve the therapeutic efficacy of immunotherapy. Recent clinical trials involving PD 1/PD L1 inhibitors monotherapy in breast cancer has revealed little efficacy, which highlights the need to develop combinations of PD 1/PD L1 inhibitors with chemotherapy, molecularly targeted therapies, and other immunotherapies to maximize the clinical efficacy. Collectively, the immunotherapy might be a promising therapeutic strategy for breast cancer and several clinical trials are still on going.
The Identity Paradox and an Expanded Framework of Organizational Identity
Year: 2012

This conceptual paper is guided by three objectives: First, to bolster the argument for organizational identity as a defined concept, as compared with a metaphor or paradigmatic perspective. Second, articulate a clearer and more fully developed connection between the concepts of individual identity and organizational identity. Third, specify a distinctive, defensible conceptual domain for the concept of organizational identity and align the definition of organizational identity with that domain. Guided by these objectives, we argue that the tension between being similar and different is a fundamental and distinguishing feature of identity and that this "identity paradox" exists at both the individual and organizational levels. We then propose a two dimensional form of this identity paradox and suggest that the resulting framework serve as the conceptual domain of organizational identity. In the end, we examine the implications of the proposed conceptual space for Albert and Whetten's (1985) definition of organizational identity and propose two new definitional elements.
Throughput Optimized FPGA Accelerator for Deep Convolutional Neural Networks
Venue: ACM Trans. Reconfigurable Technol. Syst.
Year: 2017

Deep convolutional neural networks (CNNs) have gained great success in various computer vision applications. State of the art CNN models for large scale applications are computation intensive and memory expensive and, hence, are mainly processed on high performance processors like server CPUs and GPUs. However, there is an increasing demand of high accuracy or real time object detection tasks in large scale clusters or embedded systems, which requires energy efficient accelerators because of the green computation requirement or the limited battery restriction. Due to the advantages of energy efficiency and reconfigurability, Field Programmable Gate Arrays (FPGAs) have been widely explored as CNN accelerators. In this article, we present an in depth analysis of computation complexity and the memory footprint of each CNN layer type. Then a scalable parallel framework is proposed that exploits four levels of parallelism in hardware acceleration. We further put forward a systematic design space exploration methodology to search for the optimal solution that maximizes accelerator throughput under the FPGA constraints such as on chip memory, computational resources, external memory bandwidth, and clock frequency. Finally, we demonstrate the methodology by optimizing three representative CNNs (LeNet, AlexNet, and VGG S) on a Xilinx VC709 board. The average performance of the three accelerators is 424.7, 445.6, and 473.4GOP/s under 100MHz working frequency, which outperforms the CPU and previous work significantly.
Vulnerability, distress, and immune response to vaccination in older adults
Venue: Brain, Behavior, and Immunity
Year: 2012

Psychological distress and biobehavioral vulnerability (e.g. arising from being older or sedentary) have independently predicted immune responses to influenza vaccination in older adults. Recent research examining basal inflammatory markers suggests that, rather than having additive effects, distress and vulnerability interact with each other. The present study tested the interactions between distress and age, sex, education, BMI, sleep quality, and physical activity over up to 8 years in older adults (N=134; M age=74 years) who received annual influenza vaccinations. Measured vaccination responses were changes from baseline in antibody to the three vaccine components, interleukin (IL) 6, and b2 microglobulin. As predicted, the most robust effects were interactions between distress and vulnerability. BMI interacted with stable individual differences in distress to predict antibody response (t(132)=3.09, p<0.003) such that only the combination of low BMI and low distress was associated with a more robust antibody response. Likewise, changes in physical activity over time interacted with changes in distress (t(156)=2.96, p<0.004) such that only the combination of increased physical activity and decreased distress was associated with a more robust antibody response. Finally, there was a smaller tendency for age to interact with stable individual differences in distress (t(130)=2.46, p<0.015) such that distress was more strongly associated with post vaccination IL 6 at older ages. The synergistic effects of distress and other forms of vulnerability are an important direction for future research and a target for interventions to improve immunological health in older adults.
Zeolitic imidazolate framework 8 (ZIF 8) coated In2O3 nanofibers as an efficient sensing material for ppb level NO2 detection.
Venue: Journal of colloid and interface science
Year: 2019

The development of NO2 gas sensors is of great importance for air quality monitoring and human health. In this work, In2O3 and zeolitic imidazolate framework 8 (ZIF 8) heterostructures were synthesized and designed as efficient sensing materials for NO2 detection. The ZIF 8 nanocrystals were uniformly deposited on In2O3 nanofibers (NFs) by using a self template strategy, where In2O3/ZnO NFs act as the source of Zn2+ for the formation of ZIF 8 and as the template. By tuning the amount of Zn2+ in the composite NFs, different morphologies from In2O3 NFs with minimal ZIF 8 loading to an In2O3/ZIF 8 core shell complex were obtained. The optimized In2O3/ZIF 8 NFs show a remarkably high response to 1 ppm NO2 (Rg/Ra 16.4) and enhanced humidity resistance due to the hydrophobicity of ZIF 8 in comparison with those of the pristine In2O3 NF sensor (Rg/Ra 4.9) at 140 degC. The gas sensing mechanism of In2O3/ZIF 8, which is based on electron transduction, surface chemistry, and the functional interface between the loaded ZIF 8 and In2O3 matrix, was proposed. Additionally, the large number of pores, which were formed by the in situ conversion of ZnO grains in the matrix, ensures that all parts of the In2O3 NFs are accessible to gases. This facile strategy paves the way for the design of metal oxide/MOF complex architectures with tunable metal centers for various applications, including gas sensing.
Plate interactions, crustal deformation and magmatism along the eastern margins of the Tibetan Plateau
Year: 2018

In order to investigate the deep structure and dynamics of the triangular colliding system of the eastern Tibetan Plateau (TP) as well as the Yangtze Platform and the Qinling Dabie Fold Belt, a large number of P and S wave arrival times from both local and teleseismic earthquakes were used to generate high resolution tomographic images beneath the eastern margins of TP. The results of this study show that the western margin of the Minjiang fault is characterized by low velocity (low V) anomalies in sharp contrast to the high velocity (high V) anomalies that are derived from the eastern part. This means that the Minshan uplift zone is imaged as high V and acts as a barrier to the eastward escape crustal flow, which leads to obvious segmentation of the Longmenshan fault (LMSF) zone between velocity belts that are concatenated into the Minjiang fault. Because high V anomalies are clearly imaged in this study to extended depths of ca. 450 km, we consider the Yangtze Platform (containing the Sichuan Basin) to comprise craton like lithosphere. This study reveals the presence of a low V belt extending to a depth of ca. 250 km between the Sichuan basin and the Ordos Block which probably represents the migration pathway of upwelling asthenosphere materials from Tibet. At the same time, low V zone with a downdip depth of ca. 500 km accompanied by an approximately 400 km rectangular high V body is imaged under the Tengchong volcano. We interpret the high V body and the low V zone as evidence for the subducted Indian plate and the volcanic magma source, respectively. The results of this study reveal a number of new features of structural heterogeneities relative to deep coupling between the Tibet and the Yangtze platform, as well as the relationship between the Sichuan Basin and the Ordos Block, and the original source of the Tengchong volcano. The results presented here enable us a better understanding of the plate interaction, crustal deformation, and magmatism of the Tengchong volcano along the eastern margins of TP.
A Widely Tunable Compact Patch Antenna
Venue: IEEE Antennas and Wireless Propagation Letters
Year: 2008

In this letter, we propose a tunable patch antenna made of a slotted rectangular patch loaded by a number of posts close to the patch edge. The posts are short circuited to the ground plane via a set of PIN diode switches. Simulations and measurements verify the possibility of tuning the antenna in subbands from 620 to 1150 MHz. Good matching has been achieved over most of the bands. Other performed designs show that more than one octave can be achieved using the proposed structure.