bluuebunny/crossref_metadata_2025 huggingface dataset:
Балетмейстерська творчість Олексія Гомона в контексті народно-сценічної хореографії України
Authors: Гутник Ірина Миколаївна
Published: December 2021

Мета статті полягає у виявленні особистого внеску балетмейстера Олексія Гомона в розвиток народно-сценічного хореографічного мистецтва України. Методологія. Для досягнення мети застосовано загальнонаукові методи теоретичного та емпіричного рівнів: аналіз і узагальнення науково-теоретичних основ дослідження, хронологічний метод. Висновки щодо особливостей балетмейстерської творчості О. Гомона зроблено на основі аналізу виявленого комплексу джерел: хореографічних творів митця, інтерв’ю з ним, спогадів колег та артистів. Наукова новизна. У дослідженні вперше здійснено комплексний аналіз основних етапів становлення та розвитку балетмейстерської творчості О. Гомона; введено у науковий обіг фактологічний матеріал (інтерв’ю з митцем), який до цього часу не був опублікований. Висновки. Балетмейстерська творчість О. Гомона є синтезом досягнень декількох поколінь українських хореографів у сфері сценічної інтерпретації народного танцю, вона заснована на народних традиціях та творчо оброблена, збагачена досвідченим, майстерним танцівником і талановитим багатоплановим постановником. Значний вплив на творчість талановитого балетмейстера О. Гомона мала співпраця з генієм української народної хореографії П. Вірським. Яскравою віхою у творчому житті митця стала балетмейстерська діяльність у Державному шахтарському ансамблі пісні і танцю «Донбас», а згодом у Національному заслуженому академічному українському народному хорі ім. Г. Верьовки. Танцювальні номери та вокально-хореографічні композиції, створені О. Гомоном, і до сьогодні залишаються улюбленими як в артистів, так і в глядачів. Балетмейстерська творчість О. Гомона, його професійна діяльність – це вагомий внесок у розвиток народно-сценічного мистецтва України, який полягає в розширенні тематики сценічних українських народних танців; збагаченні народної танцювальної лексики завдяки вмілій обробці фольклорного матеріалу; створенні значної кількості масштабних пісенно-танцювальних композицій, які заслужено вважаються кращими зразками вокально-хореографічних форм народного мистецтва.
Outstanding Monument of Garden and Park Art of Kyiv and Problems of Its Environment
Authors: Vecherskyi Viktor
Published: December 2021

The purpose of the article is to analyze the monument and expert assessment of the monument of garden and park art Central Republican Botanical Garden (1 Timiriazievska Street, Kyiv) and its urban environment, which is rapidly evolving, threatening this monument naturally of the reserved fund and cultural heritage sites located on its territory, which requires the development of the protection zoning concept in the areas adjacent to the monument in order to preserve this unique cultural and natural heritage. The research methodology is based on the use of general scientific and special methods, including the historical method in a systematic approach, when the set of monuments connected by a common area, as well as the surrounding environment as an object of study is considered in development, as well as the comparative method, analysis and synthesis, deduction and induction. The scientific novelty of the research is that for the first time a comprehensive analysis of this monument of park and garden art as an object not only of nature reserves, but also immovable cultural heritage type ‘landmark’, articulated problems caused by rapid and chaotic development urban environment around this monument, and also proposed a conceptual approach to the protective zoning of areas around the monument. Conclusions. All cultural heritage sites, including the Central Republican Botanical Garden as an object of study, form the traditional nature of the environment of the southern periphery of the historic centre of Kyiv. The object of study for its compositional role in the traditional nature of the environment is the landscape dominant of the large-scale monument ‘Cultural Landscape of the Kyiv Mountains and the Dnieper River Valley’, the compositional and species influence of which extends to the entire Dnieper Valley between the E. Paton and the South bridges. With this in mind, a conclusion was made about the insufficiency and obsolescence of the existing protection zoning in the areas adjacent to the monument in question, and a new concept of protection zoning with additional development control zones was defined. Their approval will allow actualizing the territorial-environmental approach as the most effective in preserving the traditional Kyiv character of the environment for the present and future generations.
General Principles of a Museum (Museum Formation) Establishment at a Military Educational Institution
Authors: Kotkova Vira , Prokhatska Inna
Published: December 2021

The purpose of the article is to systematize and streamline the current legislation to simplify the algorithm for collecting and compiling a package of documents in order to establish and register a museum (museum formation) at a military educational institution. The scientific novelty lies in the fact that an attempt has been made to systematize and streamline the process of forming museum formation, as well as to harmonize and generalize the current legislative requirements for this process. Conclusions. A study of the legislation and regulatory framework for the establishment, operation and registration of museums at military educational institutions showed a complex and confusing system of regulatory legal acts, often requiring duplication of certain actions, and sometimes mutually exclusive, which complicates the procedure for creating a museum at a military educational institution. Systematization of regulatory requirements, structuring them in the order of implementation, as well as the classification and inventory of the collection items directly requires a specialist with the appropriate professional skills, abilities and motivation, otherwise, the assembly remains in the status of a storage.
Cultural Deposits of the Latest Time in the Context of Archaeological Research: Stratigraphic ‘Ballast’ or Historical Value
Authors: Moskalenko Andrii
Published: December 2021

The article is written in the scientific polemic genre and it is a continuation of the discussion that began earlier in the professional environment. The author defends the position to give more attention to culture layers of the 20th during conducting an archaeological excavation. The problem is the uncertainty of the cultural deposits’ status of the 20th century. The purpose of the article is to determine the 20th century culture deposits historical value. Research methodology. Common-scientific methods are used. The typological method is also used, in particular, for 20th century culture deposits classification. The scientific novelty lies in the first, in Ukrainian historiography, attempt to argue a historical value of the 20th-century cultural layers. Conclusion. The modern culture deposits' historical value is in that they are at least a historical source and also an epoch monument. In addition to scientific, individual artifacts or complexes on cultural layers of modern times can have artistic, aesthetic, museum, tourist, anthropological, ethnographic, national, political, ideological, economic, social value.
First Migration of Peoples and Zarubinets Culture
Authors: Gusakov Mikhail
Published: December 2021

The article is devoted to one event in ancient history, called ‘The First Migration of Peoples,’ which was studied and commented on many times when the Germanic tribes Cimbri and Teutons carried out many years of displacement in the space of Central Europe. Despite their defeat by Rome, this event caused a powerful movement of other tribes, especially towards Eastern Europe, where many new archaeological cultures were formed. Among them, a special place is occupied by the Zarubinets culture and its part in the history of Eastern Europe. The purpose of the study is to determine the place of Zarubinets culture in the history of eastern Europe. The research methodology consists in the use of general scientific, special and interdisciplinary methods. Scientific novelty. For the first time, the Zarubinets culture of Eastern Europe is considered against the background of the Western European tribe’s movement due to Roman expansion. Conclusions. The question of the Zarubinets culture's origin is still debatable. Now there is no particular objection to the opinion that the genesis of Zarubinets culture was a complex process that reflected the peculiarities of both the internal development of the local population and the effects of external circumstances, reflecting the movement of tribes in the Center for Europe.
Waldpolitik des Bundes: Massnahmenplan 2021–2024
Authors: Tschannen Amadea , Bolgè Roberto , Landolt Daniel
Published: December 2021

Der Bundesrat publizierte 2013 seine Waldpolitik 2020. Basierend auf einer Untersuchung zur Zielerreichung und einer Stakeholderanalyse beschloss der Bund 2017, die Ziele und die strategischen Stossrichtungen der Waldpolitik 2020 weiterzuführen und die Massnahmen zu aktualisieren. Nun liegt der angepasste Massnahmenplan vor. Dieser wurde in einem partizipativen Prozess erarbeitet, in dem die Kantone und andere Akteure stärker einbezogen wurden als bei der Erarbeitung der Waldpolitik 2020. Die Rollen der verschiedenen Akteure bei der Umsetzung wurden definiert. Damit soll die Umsetzung erleichtert und die Zielerreichung verbessert werden. Im Artikel wird der partizipative Entstehungsprozess des neuen Massnahmenplans reflektiert, die zentralen Neuerungen werden erläutert und diskutiert.
Wie wirksam sind Rechtsnormen im Kampf gegen den illegalen Holzhandel?
Authors: Kümin Ivanca
Published: December 2021

Der illegale Holzhandel ist nicht nur ein ökologisches, sondern auch ein ökonomisches und soziales Problem. Bekämpft werden kann er mithilfe verschiedener Methoden. Eine davon ist der Erlass von staatlichen Rechtsnormen. Mit der Holzhandelsverordnung, die im Januar 2022 in Kraft tritt, hat der schweizerische Gesetzgeber diese Methode gewählt. Ein Rechtsvergleich mit Regelungen der EU und der USA zeigt, dass die schweizerische Holzhandelsverordnung ihre Ziele grundsätzlich erreicht. Dem illegalen Holzhandel wird in der Schweiz der Riegel vorgeschoben. Eine nationale Regelung kann diesen jedoch nicht vollständig verhindern. Deshalb wäre eine internationale Gesamtlösung wünschenswert.
Reflection Techniques in Real-Time Computer Graphics
Authors: Clemenz Christian , Weydemann Leonard
Published: December 2021

Reflections have a long history in computer graphics, as they are important for conveying a sense of realism as well as depth and proportion. Their implementations come with a multitude of difficulties, and each solution typically has various trade-offs. Approaches highly depend on the geometry of the reflective surface since curved reflectors are usually more difficult to portray accurately. Techniques can typically be categorized by whether they work with the actual geometry of the reflected objects or with an image of these objects. For curved surfaces, image-based techniques are usually preferred, whereas for planar surfaces the reflected geometry can be used more easily because of the lack of distortion. With current advances in graphics hardware technology, ray tracing is also becoming more viable for real-time applications. Many modern solutions often combine multiple approaches to form a hybrid technique. In this paper, we give an overview of the techniques used in computer graphics applications to create real-time reflections. We highlight the trade-offs that have to be dealt with when choosing a particular technique, as well as their ability to produce interreflections. Finally, we describe how contemporary state-of-the-art rendering engines deal with reflections
On Diagonal Triangle of Non Cyclic Quadrangle in Isotropic Plane
Authors: Šimić Horvath Marija , Volenec Vladimir
Published: December 2021

Geometry of the non cyclic quadrangle in the isotropic plane was introduced in [2] and [6]. Herein, its diagonal triangle is studied and some nice properties of it are given.
Generalized Regularity and the Symmetry of Branches of ''Botanological'' Networks
Authors: Zachos Anastasios N.
Published: December 2021

We derive the generalized regularity of convex quadrilaterals in R^2, which gives a new evolutionary class of convex quadrilaterals that we call generalized regular quadrilaterals in R^2. The property of generalized regularity states that the Simpson line defined by the two Steiner points passes through the corresponding Fermat-Torricelli point of the same convex quadrilateral. We prove that a class of generalized regular convex quadrilaterals consists of convex quadrilaterals, such that their two opposite sides are parallel. We solve the problem of vertical evolution of a ''botanological'' thumb (a two way communication weighted network) w.r to a boundary rectangle in R^2 having two roots,two branches and without having a main branch, by applying the property of generalized regularity of weighted rectangles. We show that the two branches have equal weights and the two roots have equal weights, if the thumb inherits a symmetry w.r to the midperpendicular line of the two opposite sides of the rectangle, which is perpendicular to the ground (equal branches and equal roots). The geometric, rotational and dynamic plasticity of weighted networks for boundary generalized regular tetrahedra and weighted regular tetrahedra lead to the creation of ''botanological'' thumbs and ''botanological'' networks (with a main branch) having symmetrical branches
On the Structural Properties of Voronoi Diagrams
Authors: Weydemann Leonard , Clemenz Christian , Preisinger Clemens
Published: December 2021

A Voronoi diagram is a tessellation technique, which subdivides space into regions in proximity to a given set of objects called seeds. Patterns emerging naturally in biological processes (for example, in cell tissue) can be modelled in a biomimicry process via Voronoi diagrams. As they originate in nature, we investigate the physical properties of such patterns to determine whether they are optimal given the constraints imposed by surrounding geometry and natural forces. This paper describes under what circumstances the Voronoi tessellation has optimal (structural) properties by surveying recent studies that apply this tessellation technique across different scales. To investigate the properties of random and optimized Voronoi tessellations in comparison to a regular tessellation method, we additionally run and evaluate a simulation in Karamba3D, a parametric structural engineering tool for Rhinoceros3D. The novelty of this research lies in presenting a simple and straightforward simulation of Voronoi diagrams and highlighting how and where their advantages over regular tessellations can be exploited by surveying more advanced approaches as found in literature.
Asymptotes of Plane Curves - Revisited
Authors: Katalenić Ana , Čižmešija Aleksandra , Milin Šipuš Željka
Published: December 2021

In this paper we present a review of the basic ideas and results concerning asymptotic lines of plane curves. We discuss their different definitions, namely that of a limiting position of tangent lines, of the tangent line at infinity, and finally the one that requires that the distance between points of a curve and asymptotic line tends to 0 as the point moves along an infinite branch of the curve. We also recall the method of determining asymptotes of algebraic curves from the leading coefficients in their equation and provide examples.
Development and Implementation of High Precision Positioning Technology for Electric Vehicle Wireless Charging Coils
Authors: Li Jie , Qian Kejun , Li Yafei , Liu Yi , Liu Zifeng , Tan Linlin
Published: December 2021

This paper mainly studies the development and implementation of the positioning technology of the electric vehicle wireless charging coil, so as to accurately detect the position deviation of the receiving coil, so that the electric vehicle wireless charging system can provide electric energy for electric vehicles more efficiently. Based on the positioning method of electric vehicle based on three detection coils, this paper proposes a calculation method to describe the offset degree of coil based on fuzzy mathematics theory. The algorithm is verified by simulation and experiment, and the influence factors of the error accuracy and the source of the error are analyzed. The work done in this paper has a strong practical significance for the efficient realization of electric vehicle wireless energy transmission.
Study on Type Selection of Relays in Outdoor Terminal Box of Converter Station
Authors: Wu Jianying , Wang Zhen , Yan Xilin
Published: December 2021

The outdoor terminal box of converter station’s complex working characteristics and working environment easily leads to the failure of relays in it. The paper analyzes the key factors in relay selection from the perspectives of the characteristics of the operating environment. By comparing the characteristics of different component materials and structure designs, the paper proposes suggestions of type selection of relays in outdoor terminal boxes of converter stations.
Research on the Construction of Online Culture Trading Platform Based on Netizens’ Wishes
Authors: Song Ren , Wang Weiwei , Liu Yang
Published: December 2021

According to the statistical data of the 44th China statistical report on Internet development, as of June 2019, the number of Internet users in China has reached 854 million, and the penetration rate has reached 61.2%. The number of mobile Internet users reached 8.47 million, accounting for 99.1% of the total Internet users [1]. The number of Internet users in China continued to grow steadily. With the rapid development of high-tech and Internet, the continuous expansion of Internet users, the continuous optimization of the network environment, the gradual formation of the network society, the network life tends to be a regular state, and the network culture is also formed in this environment, which has become an important part of China’s cultural system. This paper takes netizens as the core, studies the construction of network cultural data trading platform based on netizens’ behavior. Through the establishment of netizens influence model and online cultural data trading platform, this paper studies the consumption intention of online cultural products and the characteristics of online cultural data trading platform from the perspective of netizens. Based on the data of strong research results, this paper puts forward suggestions and strategies for the construction of network cultural data trading platform and the innovation of network cultural products in China.
Smart Manufacturing and Jobs
Authors: Mendoza-Valencia Juvenal
Published: December 2021

The proper use of new technologies, together with a good management of these by the workers, makes the workplace become a melting pot of new ideas, where professional development and motivation [1] make a difference with past and present times where monotonous and repetitive work was the constant. With the use of artificial intelligence, the cloud and big data, a set of intelligent sensors is necessary, which can monitor a critical variable within the production line, which requires an encrypted communication infrastructure and with information that can be monitored in real time, which allows a better performance of the company, making it a more pleasant place for staff and with working conditions that help to overcome them when performing complex tasks. Due to the educational level that many of the workers currently have and the fact of being born in a technified society, it causes them to be more interested in carrying out activities where they develop their creativity and skills, resulting in economic and psychological well-being.
Edge Loss for Remote Sensing Image Super-Resolution
Authors: Li Jiaoyue , Liu Weifeng , Zhang Kai , Liu Baodi
Published: December 2021

Remote sensing image super-resolution (SR) plays an essential role in many remote sensing applications. Recently, remote sensing image super-resolution methods based on deep learning have shown remarkable performance. However, directly utilizing the deep learning methods becomes helpless to recover the remote sensing images with a large number of complex objectives or scene. So we propose an edge-based dense connection generative adversarial network (SREDGAN), which minimizes the edge differences between the generated image and its corresponding ground truth. Experimental results on NWPU-VHR-10 and UCAS-AOD datasets demonstrate that our method improves 1.92 and 0.045 in PSNR and SSIM compared with SRGAN, respectively.
Calculation of RMS Values for Variable Frequency Sinusoidal Signals, Using Phasors and Digital SAL and CAL Filters
Authors: Aguirre Yonatan , Gutierrez Flabio , Abramonte Richard , Arce Nilthon , Aliaga Antenor
Published: December 2021

The accurate measurement of RMS values of voltage and current is crucial for the monitoring and protection of power systems and in general for electrical power distribution systems. The authors in this paper have developed an algorithm to calculate the RMS value of sinusoidal signals of varying frequency, by applying phasors obtained from digital filters SAL and CAL. In conditions in which the frequency of the grid varies, a phase shift is presented in the phasor of the grid voltage which is used for the design of a regulator that allows to obtain accurate RMS voltage values. The choice of the SAL and CAL digital filters is due to their low computational requirement, so they can be implemented in general-purpose microcontrollers.
Optical Vortices Sharp Focusing by Silicon Ring Gratings Using High-Performance Computer Systems
Authors: Savelyev Dmitry
Published: December 2021

The diffraction of vortex laser beams with circular polarization (with different direction of polarization rotation) by silicon ring gratings was investigated in this paper. The silicon diffractive axicons with different numerical apertures (NA) were considered as such ring gratings. The considered diffractive axicons are compared with single silicon circular protrusion (cylinder). The finite difference time domain method was used for Light propagation (3D) through the proposed silicon ring gratings and silicon cylinder. The possibility of subwavelength focusing by varying the height of the elements is demonstrated. In particular, it is numerically shown that a silicon cylinder forms a light spot with the minimum size (intensity) of the longitudinal component of the electric field FWHM is 0.32λ.
Compressive Video Sensing Based on Intra-Inter-Frame Constraints and Genetic Algorithm
Authors: Yue Yuchen , Li Hua , Luo Jianhua
Published: December 2021

Establishing structured reconstruction models and efficient reconstruction algorithms according to practical engineering needs is of great concern in the applied research of Compressed Sensing (CS) theory. Targeting problems during high-speed video capture, the paper proposes a set of video CS scheme based on intra-frame and inter-frame constraints and Genetic Algorithm (GA). Firstly, it employs the intra-frame and inter-frame correlation of the video signals as the priori information, creating a video CS reconstruction model on the basis of temporal and spatial similarity constraints. Then it utilizes overcomplete dictionary of Ridgelet to divide the video frames into three structures, smooth, single-oriented, or multijointed. Video frames cluster according to the structure using Affinity Propagation (AP) algorithm, and finally clusters are reconstructed using evolutionary algorithm. It is proved efficient in terms of reconstruction result in the experiment.
Exploration and Research on Integrating Programming Education into Junior Middle School Mathematics Classroom
Authors: Bao Yiqin , Wang Gui , Sun Zhengtang
Published: December 2021

We are in the era of big data, and it is particularly important to cultivate students’ data processing ability. Python is an important auxiliary tool for data analysis, and its syntax is concise and clear, which is suitable for junior high school students to start learning code language. Making full use of modern information technology and Innovating Curriculum form is the new requirement of “China education modernization 2035”. Integrating Python into junior high school mathematics classroom is not only the innovation of mathematics curriculum form, but also a good way to cultivate students’ thinking ability and programming thought. Based on the understanding of Python software and data processing plate in junior high school mathematics curriculum, this paper analyzes the promotion of students’ thinking ability by integrating Python into junior high school mathematics classroom, and explores the strategies of applying Python in teaching combined with cases.
Analysis of Signal Processing Methods for Formation of Radar Range Profiles
Authors: Van Loi Nguyen , Thanh Son Le , Trung Kien Tran , Van Truong Tran , Vu Hop Tran
Published: December 2021

A range profile (RP) is a vector of reflected powers from a target by the range direction and is used for the purpose of target recognition. In this paper, a problem of formation of RPs is investigated. The well-known difference operator and window-based methods are analyzed with data from a coastal surveillance radar. The drawbacks of those methods are shown. Then, a new method is presented to improve the performance of formation of RPs.
Three Term Weighted Type Fractional Fourier Transform Based Generalized Hybrid Carrier and Its Application into PAPR Suppression
Authors: Li Yong , Song Zhiqun , Sun Teng , Wang Bin
Published: December 2021

To suppress the peak to average power ratio (PAPR) of wireless communication based upon multi-carrier system. We, in this paper, proposed the three term weighted type fractional Fourier transform (3-WFRFT) based generalized hybrid carrier (GHC) system. We first provide the definition of 3-WFRFT. Moreover, some useful properties of 3-WFRFT have been presented, in this paper, which will helpful to comprehend the novel 3-WFRFT transform. Furthermore, we take PAPR of the proposed algorithm, in comparison with orthogonal frequency division multiplexing (OFDM) system and single carrier modulation (SC) system under typical complementary cumulative density function (CCDF) level. It would be demonstrated that, from some numerical simulations, the proposed 3-WFRFT based GHC performs better than OFDM system and will be useful to reduce the PAPR level.
Algebra Based Human Skeleton Sequence Reduction and Action Recognition
Authors: Xuan Shibin , Wang Kuan , Liu Lixia , Liu Chang , Li Jiaxiang
Published: December 2021

Skeleton-based human action recognition is a research hotspot in recent years, but most of the research focuses on the spatio-temporal feature extraction by convolutional neural network. In order to improve the correct recognition rate of these models, this paper proposes three strategies: using algebraic method to reduce redundant video frames, adding auxiliary edges into the joint adjacency graph to improve the skeleton graph structure, and adding some virtual classes to disperse the error recognition rate. Experimental results on NTU-RGB-D60, NTU-RGB-D120 and Kinetics Skeleton 400 databases show that the proposed strategy can effectively improve the accuracy of the original algorithm.
A Study on the Efficiency and Countermeasures of Network-Based Autonomous Learning Platform for Vocational College English Learners
Authors: Jiang Liping
Published: December 2021

This paper investigates the efficiency of 289 vocational college English learners using the network-based autonomous learning platform in Guangdong province in China. The results show that learners have a positive attitude toward the network-based extracurricular English autonomous learning, and learners with different English foundation have different requirements for extracurricular online autonomous learning. This paper puts forward some countermeasures on how to make full use of the network-based extracurricular English autonomous learning.
Detecting of All Zero Blocks in HEVC for RDOQ
Authors: Shan Nana , Wei Henglu , Zhou Wei , Duan Zhemin
Published: December 2021

There are a larger number of blocks with all zero-quantized coefficient of the transform and quantization process in HEVC. The coding time of transform and quantization can be greatly reduced by skipping all zero coefficient blocks. All zero coefficient blocks detection algorithms for RDOQ are proposed in this paper. The stair-like thresholds are obtained by statistical analysis, which can speed up all zero coefficient blocks detection for RDOQ to improve the coding efficiency. Experimental results show that it can reduce 40% coding time with negligible loss of BDBR.
A Study on Fault Tolerance Technology of Flight Control Computer for Unmanned Aerial Vehicle
Authors: Zhang Chen , Pan Jihui
Published: December 2021

According to the reliability requirement of the Flight Control Computer for Unmanned Aerial Vehicle (UAV), a design scheme is proposed to ensure its reliability by using tri-redundancy technology. Further, by selecting appropriate redundant mode and the architecture model of the triple redundant flight control computer is established in this paper. The multi-channel security level method can give full play to the error tolerance ability of the system and improve the fault tolerance performance of the aircraft. After an extensive analysis and study of the structure of each module, the hardware circuit and software flow chart of the key technologies, such as redundancy strategy and synchronization method are suggested. A channel selection method based on channel security level is proposed. Combined with the comparison technology between channels, the selection of the optimal safe channel is realized.
SDN-Enabled 3C Resource Integration in Green Internet of Electrical Vehicles
Authors: Chen Handi , Wang Xiaojie , Ning Zhaolong , Guo Lei
Published: December 2021

With the advocacy of green renewable energy, Electric Vehicles (EVs) have gradually become the mainstream in the automobile market. Due to the finite edge resources of the Internet of EVs, this paper integrates idle communication, caching and computational resources of EVs to enrich the available resources for vehicular task migration. Considering the limited capacity and resources of EVs, a distributed lightweight imitation learning-based efficient Task cOoperative migration Policy Integrating 3C resource policy, named TOPIC, is proposed to maximize the obtained quality of service. The experimental results based on the real-world traffic dataset of Hangzhou (China) demonstrate the QoS obtained based on the expert policy and agent policy of TOPIC is about 3 times higher than other representative policies.
Spectrum Availability Aware Routing and Resource Allocation for Point-to-Multipoint Services in Mixed-Grid Optical Networks
Authors: Wang Feng , Zhu Qingcheng , Li Xiaolong , Gu Jiaming , Yan Zhenhua , Yu Xiaosong , Zhao Yongli
Published: December 2021

Mixed-grid optical networks are in a migration state where fixed-grid and flex-grid optical networks coexist. To carry point-to-multipoint (P2MP) services in mixed-grid optical networks, routing and resource allocation (RRA) problems need to be solved. Once the RRA fails, services will be blocked and then influence quality of service. The minimized spectrum for satisfying the bandwidth request of services is called as a frequency block (FB). For a service, the total number of available FBs embodies the spectrum availability on a link. Because the fixed-grid and flex-grid links have different channel spacing, spectrum availability on fixed-grid and flex-grid links needs different evaluation method. We propose a RRA algorithm in mixed-grid optical networks for P2MP services by being aware of spectrum availability. The spectrum availability is evaluated according to fixed-grid and flex-grid constraints. Our proposed algorithm achieves the lower blocking probability (BP) than that of benchmark RRA algorithms according to simulation results.
Low-Cost Deployment Scheme of VNF and PNF in Optical Datacenter Networks
Authors: Wei Jianghua , Li Xin , Xin Jingjie , Tang Ying , Zhang Lu , Huang Shanguo
Published: December 2021

In this paper, we study the problem of network function deployment while user demands are served by both virtualized network functions (VNFs) and physical network functions (PNFs). A hybrid deployment scheme of VNFs and PNFs (HDVP) is proposed. A heuristic algorithm is developed for the HDVP scheme with the aim of minimizing the total cost of VNFs and PNFs. The results show the HDVP scheme achieves lower cost than the conventional only PNFs serving user demands scheme.
ReDCN: A Dynamic Bandwidth Enabled Optical Reconfigurable Data Center Network
Authors: Zhang Xinwei , Zhao Zuoqing , Zhao Yisong , Guo Yuanzhi , Xue Xuwei , Guo Bingli , Huang Shanguo
Published: December 2021

A reconfigurable optical data center network is proposed, in which the optical bandwidth can be automatically reconfigured by reallocating time slots based on the real time traffic. Numerical investigations validate that the network performance of packet loss after reconfiguration decreases by 58.5%, and the end-to-end latency decreases by 63.8% with comparison to the network with rigid link interconnections, and thereby increasing the 9.4% of throughput at load of 0.8.
High-Performance Fingerprint Localization in Massive MIMO System
Authors: Ren Yijie , Xiao Zhixing , Tang Yuan , Tang Fei , Wang Xiaojun , Chen Xiaoshu
Published: December 2021

Location-based service (LBS) for both security and commercial use is becoming more and more important with the rise of 5G. Fingerprint localization (FL) is one of the most efficient positioning methods for both indoor and outdoor localization. However, the positioning time of previous research cannot achieve real-time requirement and the positioning error is meter level. In this paper, we concentrated on high-performance in massive multiple-in-multiple-out (MIMO) systems. Principal Component Analysis (PCA) is applied to reduce the dimension of fingerprint, so that the positioning time is about tens of milliseconds with lower storage. What’s more, a novel fingerprint called Angle Delay Fingerprint (ADF) is proposed. Simulation result of the positioning method based on ADF shows the positioning error is about 0.3 meter and the positioning time is about hundreds of milliseconds, which is much better than other previous known methods. (Foundation items: Social Development Projects of Jiangsu Science and Technology Department (No.BE2018704).)
Scattering Clustering Method for Terminal Fingerprint Positioning Based on MIMO Base Station
Authors: Tang Fei , Ren Yijie , Wang Xiaojun , Sun Weiguang , Chen Xiaoshu
Published: December 2021

With the rapid development of wireless communication technology, location-based services are playing an increasingly important role in people’s lives. However, as the living environment becomes more and more complex, the existence of obstructions and various scatterers makes the accuracy of traditional positioning algorithms decrease, thus, fingerprint positioning has gradually become a research hotspot in the field of positioning. This paper researches the 5th Generation (5G) fingerprint location method based on machine learning. A massive multiple-in multiple-out (MIMO) channel is constructed on the MATLAB simulation platform, from which the fingerprint information is extracted to establish a fingerprint database. Considering the huge amount of data in the fingerprint database, and under the multipath effect, the channel characteristics are mainly affected by the scatterers near the point to be located. This paper proposes a scattering-based clustering method that combines the particularity of multipath propagation for clustering. Research shows that this method has excellent clustering effects, which can effectively improve algorithm efficiency and reduce data storage pressure on the base station side. (Foundation items: Social Development Projects of Jiangsu Science and Technology Department (No.BE2018704).)
A Novel OLTC Fault Diagnosis Method Based on Optimized Long Short-Term Memory Parameters
Authors: Yan Yan , Ma Hongzhong
Published: December 2021

Recently, long short-term memory (LSTM) networks have been widely adopted to help with fault diagnosis for power systems. However, the parameters of LSTM networks are determined by prior knowledge and experience and thereby not capable of dealing with unexpected faults in volatile environments. In this paper, we propose and apply an improved grey wolf optimization (IGWO) algorithm to optimize the parameters of LSTM networks, aiming to circumvent the drawback of empirical LSTM parameters and enhance the fault diagnosis accuracy for on-load tap changers (OLTCs). The composite multiscale weighted permutation entropy and energy entropy yielded by the grasshopper optimization algorithm and variational mode decomposition (GOA-VMD) method are used as the inputs of LSTM networks. The IGWO algorithm is applied in an iterative manner to optimize the relevant super arithmetic of the LSTM. In this way, an IGWO-LSTM combination model is constructed to classify different faults diagnosed in OLTCs. Experimental results verify the diagnosis performance superiority of the proposed method over several widely used comparison benchmarks
Application of Text Mining Method for Classification of Work Order in Power Grid Production
Authors: Zhao Yadi , Wei Zhifeng , Gao Bingqiang , Zhang Shuo
Published: December 2021

With the completion of the State Grid Corporation’s maintenance system, the number of substations has increased dramatically, the grid structure has become increasingly complex, and there have been internal and external reasons such as the contingency of emergencies, and equipment failures have occurred from time to time. This paper aims to explore the potential value of massive data, show the laws of business data, and further give full play to the comprehensive support of data for enterprise operation and production management, and promote the realization of intelligent and lean power grid core business. This paper uses power system data to provide reliable data support for equipment defect full cycle management and equipment state analysis through ANOVA and neural network statistical analysis. At the same time, we use Term Frequency-Inverse Document Frequency(TF-IDF)Algorithm to calculate the importance of keywords and construct the power keyword library. By constructing Bayesian text classification model, we can classify the defect parts, defect categories and defect causes automatically. This method can be applied to the construction of power grid production work order text analysis system, improve the data quality and system automation level, help the business department to improve work efficiency and provide the basis for power grid business analysis. This method is applied to the data cleaning of the primary production equipment of power grid enterprises, and the accuracy of data error correction for equipment defects with voltages above 110kV is between 93% and 95%, and good results have been achieved.
Image Segmentation by Pairwise Nearest Neighbor Using Mumford-Shah Model
Authors: Shah Nilima , Patel Dhanesh , Fränti Pasi
Published: December 2021

Mumford-Shah model has been used for image segmentation by considering both homogeneity and the shape of the segments jointly. It has been previously optimized by complex mathematical optimization methods like Douglas-Rachford, and a faster but sub-optimal k-means. However, they both suffer from fragmentation caused by non-convex segments. In this paper, we present hierarchical algorithm called Pairwise nearest neighbor (PNN) to optimize the Mumford-Shah model. The merge-based strategy utilizing the connectivity of the pixels prevents isolated fragments to be formed, and in this way, reaches better quality in case of images containing complex shapes.
Study on Inter-Turn Short Circuit Test for Distribution Reactor
Authors: Qin Wei , Gu Tiansong , Li Hongliang
Published: December 2021

Inter-turn short circuit is a common fault in reactor. In view of the current situation of insufficient condition based maintenance of reactor, an on-line monitoring method suitable for Inter-turn short circuit fault of distribution reactor was proposed in this paper. Firstly, the equivalent circuit model of reactor was built, and the calculation method of electrical parameters of reactor was obtained; Then, a set of on-line monitoring system for reactor short-circuit fault was built. Finally, the short-circuit test of reactor under different fault location and fault degree was carried out. The results show that the equivalent reactance and resistance change rate of inter-turn short circuit of reactor have the symmetry of short circuit position, the absolute value of change rate in the middle is the largest, and the absolute value of change rate at both ends is the smallest. With the deepening of short-circuit fault, the equivalent reactance decreases and the decreasing range increases. The equivalent resistance shows an increasing trend, and the increasing range increases. This research technology can realize the effective monitoring of inter-turn short circuit fault of distribution reactor.
Constructing Indicators For Islamic Financial Inclusion
Authors: Khamis Fauz Moh'd
Published: December 2021

This study conceptualizes and proposes the measurement items and constructs for assessing the financial inclusion of Islamic finance. It proposes and validates the demand-side measurement tool for the financial inclusion of Islamic finance using four dimensions, i.e., quality, accessibility, usage, and satisfaction. The measurement instrument proposed in this study assesses the actual performance of Islamic finance towards total financial inclusion. The study was based on exploratory factor analysis of the questionnaire responses collected from 129 respondents. The questionnaires were distributed to the Zanzibar residents from February 2021 to March 2021. The questionnaires are adapted mainly from the Findex Survey (2017). The financial inclusion of Islamic finance can be determined using four dimensions (components); relevancy (quality) of Islamic financial services, accessibility of Islamic financial services, usage of Islamic financial services, and satisfaction with Islamic financial services. The study is limited to Principal Components Analysis as a factor analysis approach. Besides, the study has been conducted in Zanzibar, a semi-autonomous nation in East Africa. Therefore, more comprehensive studies are required in various areas for generalizing the results.
Company Internal Factors and Their Influences on Financial Performance
Authors: Renfiana Lilis , Ardana Yudhisthira
Published: December 2021

This research aims to systematically, actual, and accurately explain the facts and characteristics of the company and their effect on financial performance. Data in the form of time-series data from 2015-2019 and cross-section data collected from the financial statements of automotive companies listed on the Indonesia Stock Exchange then obtained nine companies that meet the criteria. The independent variables are Firm Size, Leverage, Liquidity, and the dependent variable is financial performance as proxied by Return On Equity (ROA). The research used panel data techniques; Common Effect Model, Fixed Effect Model, and Random Effect Model. The results show that Firm Size partially has a negative and significant effect, meaning that the greater the assets owned by the company, the more complex the agency problems faced. The partial leverage variable has a negative and significant effect, means that the use of relatively high debt will cause fixed costs in the form of interest expenses and loan principal installments to be paid, the greater the fixed costs. The liquidity variable partially has a positive and insignificant effect. This means that changes that occur in both the number of current assets or current liabilities affect increasing profits so that the increase in Liquidity (CR) or the level of liquidity affects changes in increasing company performance (ROA).
Cronologia Histórica de Santa Maria e do Extinto Município de São Martinho 1787-1930
Authors: Beltrão Romeu
Published: December 2021

Publicada inicialmente entre 1951 e 1952 no jornal A razão, posteriormente, saiu refundida e editada como livro quando da comemoração do primeiro centenário de Santa Maria em 1958. Nos anos seguintes, foi reescrita com enriquecimento de conteúdo, pretendendo o autor ampliar a periodização, de modo a referir, num segundo volume, os fatos posteriores a 1930.
Perspetivas futuras na monitorização do ritmo cardíaco e a utilização de smartwatch
Authors:   Médico de Família, Soares Carolina Araújo , Pinto Andreia Figueira ,   Médico de Família, Andrade Raquel ,   Médico de Família, Rodrigues Ricardo C. ,   Médico de Família
Published: December 2021

A crescente utilização de smartwatches passou a fazer parte do quotidiano dos seus utilizadores, com especial foco na atividade física, ao permitir monitorizar o exercício realizado em termos de intensidade, duração, gasto energético e, mais recentemente, monitorização da frequência cardíaca. A potencial utilização destes dispositivos eletrónicos no campo da medicina é um marco importante, permitindo, através da monitorização do ritmo cardíaco, a possível deteção de períodos de arritmia, como a fibrilação auricular, com extensão à monitorização de arritmias ventriculares potencialmente fatais, como o prolongamento do intervalo QT, este último com particular utilidade na monitorização à distância durante o período da pandemia COVID-19. Os principais estudos apresentados apresentam várias limitações; no entanto, elucidam os leitores para a importância da crescente evolução tecnológica e para o seu potencial impacto prognóstico nos utilizadores destes dispositivos.
Agradecimento a Revisores 2021
Authors: Maricoto Tiago
Published: December 2021

Agradecimento a Revisores 2021