bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of reliability and accuracy of lunar core detection based on Apollo moonquake observation
Authors: Yang Biao , Wang Yanbin 
Published: June 2023

Introduction:In the 1960s, the Apollo missions deployed seismometers on the near side of the Moon, and the obtained moonquake data enabled the seismic study of internal structure of the Moon. The lunar seismic waveforms are dominated by strong coda waves caused by scattering in the near surface, which masks the reflected and converted waves from the discontinuities inside the Moon. The Double Array Stacking method is an important technique to enhance the reflected and converted waves. However, its performance would be affected by many factors including signal to noise ratio, arrival time errors, differences in amplitude and polarity of waveforms caused by different station azimuth, and source mechanisms, thus needs to be further analyzed.Method:In this study, we use the pseudo-spectral and finite-difference hybrid method on staggered grid to simulate wave propagation of deep moonquakes, considering near surface scattering, to analyze the influence of the above factors on the stacking results of reflected and converted phases from outer core of the Moon.Results and discussion:Our results indicate that coda and noises would greatly reduce the stacking energy but have no significant impact on the peak position of the stacked waveforms. The arrival time errors have a significant influence on the vertical component of ScP phase and the radial component of the ScS phase, but have little influence on the transverse component of ScS phase. The difference in amplitude also leads to differences in stacking energy, but the stacking image shows good consistency in the shape. When the polarities of seismic phases are relatively consistent, the peak of the stacking energy comes from reflected phases from the core mantle boundary of the Moon. This research may be helpful to improve the detection accuracy of the internal structure of the Moon and provide a solid reference for the deployment of future seismic stations, which is of great significance for understanding the formation and evolution process of the Moon.
What place does elite sport have for women? A scoping review of constraints
Authors: Fraser Kotryna K. , Kochanek Jill 
Published: June 2023

IntroductionDespite increases in participation and raised attention for girls and women in sports, female sport is still based on male evidence that ignores gendered differences and experiences of unequal treatment and marginalization from grassroots to elite sport. This paper aimed to critically interrogate the place that women have in the male preserve of elite sport by conducting a two-part study.MethodsFirst, we provided a brief sociohistorical analysis of gender in sport as a means to move away from a decontextualized and universalized approach dominating in sport science literature. We then conducted a scoping review following PRISMA-ScR guidelines to synthesize existing sport science literature that implemented Newell's constraints-led approach to examine elite performance.ResultsTen studies were identified, none of which collected demographic data or centred on female athletes and the effects of sociocultural constraints on their performance. Instead, male-centred, masculine sports and physiological profiles dominated the identified studies.DiscussionWe discussed these results considering critical sport research and cultural sport psychology literature to offer an integrative, interdisciplinary approach to advocate for more culturally sensitive, context-specific interpretations of gender as a sociocultural constraint. We put forth a call to action for sport science researchers, practitioners, and decision-makers to move away from implementing male evidence in female sport and attend to the unique needs of female athletes. Practical suggestions aimed to help stakeholders reimagine elite sport by celebrating these [potential] differences as strengths for promoting gender equity in sport.
Whole-genome DNA methylation profiling reveals epigenetic signatures in developing muscle in Tan and Hu sheep and their offspring
Authors: Yue Caijuan , Wang Jiakang , Shen Yifei , Zhang Junli , Liu Jian , Xiao Aiping , Liu Yisha , Eer Hehua , Zhang Qiao-e 
Published: June 2023

IntroductionThe Tan sheep is a popular local breed in China because of its tenderness and flavor. The Hu sheep breed is also famous for its high litter size, and its muscle growth rate is faster than that of Tan sheep. However, the epigenetic mechanism behind these muscle-related phenotypes is unknown.MethodsIn this study, the longissimus dorsi tissue from 18 6 month-old Tan sheep, Hu sheep, and Tan-Hu F2 generation (6 sheep per population) were collected. After genomic DNA extraction, whole-genome bisulfite sequencing (WGBS) and bioinformatics analysis were performed to construct genome-wide DNA methylome maps for the Tan sheep, Hu sheep and their Tan-Hu F2 generation.ResultsDistinct genome-wide DNA methylation patterns were observed between Tan sheep and Hu sheep. Moreover, DNA methylated regions were significantly increased in the skeletal muscle from Tan sheep vs. the F2 generation compared to the Hu sheep vs. F2 generation and the Tan sheep vs. Hu sheep. Compared with Hu sheep, the methylation levels of actin alpha 1 (ACTA1), myosin heavy chain 11 (MYH11), Wiskott-Aldrich syndrome protein (WAS), vav guanine nucleotide exchange factor 1 (VAV1), fibronectin 1 (FN1) and Rho-associated protein kinase 2 (ROCK2) genes were markedly distinct in the Tan sheep. Furthermore, Gene Ontology analysis indicated that these genes were involved in myotube differentiation, myotube cell development, smooth muscle cell differentiation and striated muscle cell differentiation.ConclusionThe findings from this study, in addition to data from previous research, demonstrated that the ACTA1, MYH11, WAS, VAV1, FN1, and ROCK2 genes may exert regulatory effects on muscle development.
Intrinsic Coherence Length Anisotropy in Nickelates and Some Iron-Based Superconductors
Authors: Talantsev Evgeny F. 
Published: June 2023

Nickelate superconductors, R1−xAxNiO2 (where R is a rare earth metal and A = Sr, Ca), experimentally discovered in 2019, exhibit many unexplained mysteries, such as the existence of a superconducting state with Tc (up to 18 K) in thin films and yet absent in bulk materials. Another unexplained mystery of nickelates is their temperature-dependent upper critical field, Bc2(T), which can be nicely fitted to two-dimensional (2D) models; however, the deduced film thickness, dsc,GL, exceeds the physical film thickness, dsc, by a manifold. To address the latter, it should be noted that 2D models assume that dsc is less than the in-plane and out-of-plane ground-state coherence lengths, dsc<ξab(0) and dsc<ξc(0), respectively, and, in addition, that the inequality ξc(0)<ξab(0) satisfies. Analysis of the reported experimental Bc2(T) data showed that at least one of these conditions does not satisfy for R1-xAxNiO2 films. This implies that nickelate films are not 2D superconductors, despite the superconducting state being observed only in thin films. Based on this, here we propose an analytical three-dimensional (3D) model for a global data fit of in-plane and out-of-plane Bc2(T) in nickelates. The model is based on a heuristic expression for temperature-dependent coherence length anisotropy: γξ(T)=γξ(0)1−1a×TTc, where a>1 is a unitless free-fitting parameter. The proposed expression for γξ(T), perhaps, has a much broader application because it has been successfully applied to bulk pnictide and chalcogenide superconductors.
How patients in general practice voice and value their gut feelings about health: a qualitative interview study
Authors: Stolper Erik , Schuck Ulricke M , Hoekman Antoinet , Shvarts Elena , van Bokhoven MA Loes , Dinant Geert J , Van Royen Paul , van de Wiel Margje WJ 
Published: June 2023

BackgroundGPs consider their gut feelings a valuable tool in clinical reasoning. Research suggests patients’ gut feelings may be a useful contribution to that process. Describing these feelings more precisely could improve primary care professionals’ (PCPs) recognition of patients’ gut feelings and insight into the underlying reasons. These descriptions would also enable a thorough examination of the validity of patients’ gut feelings and their contribution to professionals’ clinical reasoning.AimTo gather the words and phrases that patients or their relatives use to share their gut feelings with primary care professionals and what they convey and imply.Design and settingQualitative study of Dutch and Belgian patients visiting an out-of-hours GP service or a GP’s office.MethodFace-to-face semi-structured interviews were carried out with 47 patients. Interviews were coded using a descriptive content analysis in an iterative process until data sufficiency.ResultsPatients or their relatives expressed their gut feelings by using words relating to trusting or not trusting the situation, or to changes in normal patterns. Their gut feelings are most often felt as a sense of alarm. In general, patients experiencing a sense of alarm, particularly mothers of sick children, were convinced that something was wrong and had often learned to trust their gut feeling. A gut feeling was the main reason to contact a PCP. Patients generally felt that their gut feelings were taken seriously.ConclusionThe findings of this study provide an insight into how patients and relatives may express their gut feelings about their own or their relative’s health and how they share these feelings with healthcare professionals. This may help clinicians improve their recognition of patients’ gut feelings, being particularly alert to a patient or relative using phrases that relate to feelings of not trusting a situation, things seeming wrong or different from normal, and experiencing a sense of alarm. Further research should be carried out into the validity of patients’ gut feelings.
ENERGY STORAGE PERFORMANCE OF La-DOPED PZT RELAXOR-FERROELECTRIC THIN FILMS FABRICATED BY SOL-GEL PROCESS
Authors: Hà Đặng Thị 
Published: June 2023

Các màng mỏng sắt điện nhòe PZT pha tạp La (RFE) đã được chế tạo trên đế Pt/Ti/SiO2 bằng quy trình quay phủ sol-gel. Cấu trúc vi mô, kích thước hạt, tính chất sắt điện và hiệu suất tích trữ năng lượng của các màng mỏng đã được nghiên cứu chi tiết. Hình ảnh quét kính hiển vi lực nguyên tử cho thấy màng mỏng PLZT có cấu trúc nhỏ mịn và dày đặc hơn so với màng PZT. Hình thái bề mặt và vi cấu trúc của các màng mỏng đã thể hiện kích thước các hạt PZT lớn hơn, thô hơn so với các hạt PLZT. Phân tích phổ nhiễu xạ tia X cho thấy màng mỏng PZT và PLZT có định hướng ưu tiên (100) và có pha perovskite tinh khiết. Các phép đo tính chất sắt điện ở nhiệt độ phòng cho phép tính toán trị số năng lượng thu hồi lớn nhất (Ureco) là 6,52 J/cm3, hiệu suất tích trữ và chuyển đổi năng lượng (h) là 61,65% thu được đối với màng mỏng PLZT với 8% pha tạp La, ở điện trường E = 1000 kV/cm và tần số f =1 kHz. Những kết quả này chứng tỏ rằng màng mỏng PLZT với 8% pha tạp La rất có tiềm năng cho các tụ điện tích trữ năng lượng mật độ cao.
Model-Based Safe Reinforcement Learning with Time-Varying State and Control Constraints: An Application to Intelligent Vehicles
Authors: Zhang Xinglong , Peng Yaoqian , Luo Biao , Pan Wei , Xu Xin , Xie Haibin 
Published: June 2023

<p>Recently, safe reinforcement learning (RL) with the actor-critic structure for continuous control tasks has received increasing attention. It is still challenging to learn a near-optimal control policy with safety and convergence guarantees. Also, few works have addressed the safe RL algorithm design under time-varying safety constraints.	This paper proposes a model-based safe RL algorithm for optimal control of nonlinear systems with time-varying state and control constraints. In the proposed approach, we construct a novel barrier force-based control policy structure that can guarantee control safety. A multi-step policy evaluation mechanism is proposed to predict the policy's safety risk under time-varying safety constraints and guide the policy to update safely. Theoretical results on stability and robustness are proven. Also, the convergence of the actor-critic learning algorithm is analyzed. The performance of the proposed algorithm outperforms several state-of-the-art RL algorithms in the simulated Safety Gym environment. Furthermore, the approach is applied to the integrated path following and collision avoidance problem for two real-world intelligent vehicles. A differential-drive vehicle and an Ackermann-drive one are used to verify offline deployment and online learning performance, respectively. Our approach shows an impressive sim-to-real transfer capability and a satisfactory online control performance in the experiment.</p>
Flexible HTTP-based Video Adaptive Streaming for good QoE during sudden bandwidth drops
Authors: Nguyen Viet Hung , Nam Pham , Truong Thu Huong 
Published: June 2023

<p>We have observed a boom in video streaming over the Internet, especially during the Covid-19 pandemic, that could exceed the network resource availability. In addition to upgrading the network infrastructure, finding a way to smartly adapt the streaming system to the network and users’ conditions to satisfy clients’ perceptions is exceptionally critical, too. This paper proposes a new QoE-aware adaptive streaming scheme over HTTP - ABRA - to make flexible adaptations based on the network and the client’s current status. Besides, we propose a technique that can keep the buffer at an average high for more than 10s. We were limiting the phenomena of rebuffering due to unexpected and unpredictable bandwidth changes. The algorithm keeps the quality of subsequent versions at a constant level even when the average bitrate decreases, increasing the QoE. Experimental results show that our method can improve QoE from 7.86% to 20.41% compared to state-of-the-art methods. ABRA can provide better performance in terms of QoE score in all buffer conditions compared to the existing solutions while maintaining a minimum secured buffer level for the worst case. </p>
A Unified Affine-Projection-Like Adaptive Algorithm for System Identification
Authors: Li Yingsong 
Published: June 2023

<p> A unified affine-projection-like adaptive (UAPLA) algorithm is deivised and verified for system identification. The UAPLA algorithm uses a generalized cost function encompassing some data-reusing methods to cope with colored input signals. Furthermore, the UAPLA algorithm is derived based on the new cost function to generalize multiple affine-projection algorithms. As a result, the proposed UAPLA algorithm includes some classical adaptive filters as exceptional cases while allowing flexibility to achieve low estimation errors under impulsive noises. The obtained results conducted by simulations help to corroborate the superiority of the proposed UAPLA algorithm over other popular AP algorithms. </p>
A General Constrained Adaptive Filtering Algorithm for Channel Estimation and Beamforming: Analysis and Performance
Authors: Li Yingsong 
Published: June 2023

<p>A General Constrained Adaptive Filtering (GCAF) algorithm is proposed via constructing a general and adaptive loss function to find out a solution of constraint optimizing problem. By selecting appropriate parameters, the GCAF algorithm can be utilized to approximate different adaptive algorithms and has higher performance than its approximated algorithms. The steady state mean squared-deviation of GCAF algorithm is derived and analyzed. Also, its complexity is presented. Simulation results demonstrated that the performance of devised GCAF method can outperform most of typically adaptive algorithms by choosing optimal parameters. </p>
Control Methods for Operation of Pumped Storage Plants with Full-size Back-to-Back Converter Fed Synchronous Machines
Authors: Tiwari Raghbendra , Nilsen Roy , Mo Olve , Nysveen Arne 
Published: June 2023

<p>A full-size converter-fed synchronous machine (CFSM) for variable speed operation of a pumped storage power plant exhibits multiple advantages over the state-of-the-art doubly fed induction machine (DFIM) technology. The CFSM technology is emerging as the most flexible system for pumped storage plants for efficient operation in a wide range of water flows, which is not the case in existing power plants. This article presents steady-state control strategies to execute the variable speed operation of the pumped storage power plants in both turbine and pump mode using a full-size back-to-back converter.</p>
<p>Furthermore, the starting method of the power plant in pump and turbine mode from a standstill is proposed. In addition, the seamless transition of operating modes from the turbine to pump mode and vice versa is presented, which is an essential feature required to adapt to the varying power generation from renewable energy sources like solar and wind. The behavior of the power plant during a voltage dip on ac grid, and the low-voltage ride-through (LVRT) capability in both turbine and pump modes are also presented. The proposed control strategies are experimentally verified with a 100 kVA machine and converter setup with an emulated reversible pump turbine (RPT) and waterways. </p>
Pelatihan Desain Presentasi Untuk Peningkatan Kualitas Laporan Ilmiah Bagi Siswa siswi SMK Teknologi Riau Pekanbaru
Authors: Fatdha T Sy Eiva , Nasution Torkis , Yenni Helda , Imardi Syahrul 
Published: June 2023

Kegiatan Pengabdian Kepada Masyarakat (PKM) ini adalah salah satu bagian dari Tri Dharma Perguruan Tinggi yang harus dilaksanakan oleh seorang dosen. Pengabdian dilaksanakan sebagai suatu wujud transfer ilmu kepada masyarakat dalam peran dan tanggung jawab intelektual dalam melestarikan dan meningkatkan khasanah budaya. Satu diantara kegiatan yang dilakukan adalah bagaimana mempersiapkan siswa siswi khususnya pada SMK Teknologi Pekanbaru Riau dalam meningkatkan pengetahuan dan mutu dalam pembuatan pelaporan dan desain presentasi pada penulisan ilmiah termasuk dalam pembuatan laporan Praktek Kerja Lapangan (PKL) bagi siswa siswi SMK Teknologi Riau Pekanbaru dengan memanfaatkan pembelajaran berbasis ICT. Hasil kegiatan ini diharapkan memberi kontribusi pada pihak sekolah, guru, dan siswa serta diharapkan hasil pelatihan ini dapat dimanfaatkan dalam peningkatan mutu penulisan karya ilmiah kedepannya pada SMK Teknologi Riau.
TECHNICAL AND ECONOMIC COMPARISON OF OPTIONS FOR THE LOADING AREA IN AN INDUSTRIAL BUILDING
Authors: Забара А.В. , Кононова М.С. 
Published: June 2023

риведены результаты расчета для двух вариантов организации дополнительной погрузочной зоны на действующем промышленном предприятии. Первый вариант - пристройка к существующему зданию склада стационарно погрузочной рампы. Второй вариант – применение мобильных погрузочных эстакад. Рассмотрены достоинства и недостатки сравниваемых вариантов. Определены основные параметры, от которых зависят экономические показатели. При проведении расчетов учтено уменьшение расходов за счет сокращения обслуживающего персонала. Рассчитано увеличение эксплуатационных затрат за счет приобретения дополнительной погрузочно-разгрузочной техники и сопутствующего оборудования. Показано существенное различие в роках окупаемости сравниваемых вариантов.
In the article we present the results of calculation for two variants of an additional loading zone at an existing industrial enterprise. The first option is to add a stationary loading ramp to the existing warehouse building. The second option is the use of mobile loading ramps. We consider advantages and disadvantages of the compared options. As well we determine the main parameters on which economic indicators depend. The calculations take into account the reduction of costs due to the reduction of maintenance personnel. The increase in operating costs is calculated due to the purchase of additional loading and unloading machinery and related equipment. We also show a significant difference in the payback periods of the compared options.
SIMULATION OF THE HEAT EXCHANGE PROCESS IN THE ORIGINAL PLATE HEAT EXCHANGER
Authors: Саввин Н.Ю. 
Published: June 2023

Рассмотрен метод увеличения эффективности работы пластинчатого теплообменного аппарата. Для этого была разработана оригинальная геометрия теплообменной пластины. Основная часть имеет сферические углубления, располагающиеся на площадках между рифлений по линейному закону в шахматном порядке и имеющие различный диаметр. В результате геометрическая модель канала интенсифицированного пластинчатого теплообменного аппарата включает в себя форму профиля и размеры теплообменных пластин. Для достижения поставленной цели сформулированы начальные и граничные условия, также выполнено компьютерное моделирование. Создана трехмерная модель пластины, проведено моделирование движения теплоносителя в модифицированном гофрированном канале при различных скоростях теплоносителя. В результате определены численные значения коэффициента турбализации. На основе использования метода наименьших квадратов предложено уравнение линейной зависимости коэффициента турбулизации от скорости теплоносителя в модифицированном гофрированном канале.
In this article I consider the method of increasing the efficiency of the plate heat exchanger. For this purpose, I developed the original geometry of the heat exchange plate. The main part has spherical recesses located on the platforms between the corrugations in a linear staggered manner and having different diameters. As a result, the geometric model of the channel of the intensified plate heat exchanger includes the shape of the profile and the dimensions of the heat exchange plates. To achieve this goal, I formulated the initial and boundary conditions, and also performed computer modeling. I created a three-dimensional model of the plate and carried out modeling of the movement of the coolant in a modified corrugated channel at different speeds of the coolant. As a result, I determined the numerical values of the turbalization coefficient. Based on the use of the method of least squares, I proposed an equation of the linear dependence of the turbalization coefficient on the velocity of the coolant in a modified corrugated channel.
Pengaruh Keadilan Organisasi Terhadap Kinerja Pegawai : Peran Mediasi Organizational Citizenship Behavior
Authors: Jufrizen Jufrizen , Hamdani Surya 
Published: June 2023

The purpose of this research to analyze the effect of organizational justice on employee performance. Analyzing the effect of organizational citizenship behavior on employee performance, analyzing the mediating role of organizational citizenship behavior on the effect of distributive justice on employee performance and analyzing the mediating role of organizational citizenship behavior on the effect of procedural justice on employee performance at the Center for the Development of Quality Assurance for Vocational Education in the Field of Building and Electrical Fields, Medan. This type of research is associative. The approach used is associative and quantitative. So based on a population of 150 people, the sample taken is 122 people. Data collection techniques in this study were interviews, questionnaires. This data will be analyzed with a quantitative approach using statistical analysis, namely the partial least square - structural inquiry model (PLS- SEM). The results showed that Distributive Justice had a positive but not significant effect on Organizational Citizenship Behavior. Procedural Justice has a positive and significant effect on Organizational Citizenship Behavior. Distributive Justice has a positive and significant effect on employee performance. Procedural Justice has a positive and significant effect on employee performance. Organizational Citizenship Behavior has a positive and significant effect on employee performance. Organizational Citizenship Behavior cannot mediate or mediate the effect of Distributive Justice on Employee Performance. Organizational Citizenship Behavior mediates or mediates the effect of Procedural Justice on Employee Performance.