bluuebunny/crossref_metadata_2025_split huggingface dataset:
Power Sharing Control Strategy of High-Frequency Chain Matrix Converter Parallel System Based on Adaptive Virtual Impedance
Authors: Li Shengqing , Tang Xinyun , Zheng Jian , Wang Chenyang 
Published: December 2021

Abstract
In the high frequency link matrix converter parallel system, the impedance parameters on each line are unequal so that the output power of each converter is not equal. To solve this problem, the reason why the power cannot be divided equally under the droop control strategy is analyzed, and a power sharing strategy based on adaptive virtual impedance is proposed. This strategy introduces virtual impedance in a voltage-current dual-loop system with droop control, and uses the converter’s power information and output power factor to adaptively adjust the amplitude and phase of the virtual impedance, so that different branches have the same equivalent output impedance to compensate The voltage drop on the line impedance, while adding the droop control fine-tuning compensation link, so as to realize the load power sharing. Simulation results show that the proposed strategy can effectively improve the accuracy of output power sharing and ensure the stability of the system output voltage amplitude.
Harmonic Suppression Strategy of Photovoltaic Grid Connected Inverter Based on Repetitive and PI Control
Authors: Li Shengqing , Han Wang , Li Xiaobao , Wang Zhijian 
Published: December 2021

Abstract
To address the serious harmonic problem of grid connected current in photovoltaic grid-connected inverter, a harmonic suppression strategy based on Repetitive and PI control is proposed in this thesis. According to this strategy, the mathematical model of LCL photovoltaic grid-connected inverter is established with the harmonic mechanism analyzed, the repetitive and PI control is added into the current controller, and the capacitive-current feedback is added to enhance the system damping. Furthermore, it puts PI control on the inner loop and the repetitive control on the outer loop to improve the dynamic performance and achieve the harmonic suppression of the system. Moreover, the simulation results show that this method improves the dynamic response ability of the system, and effectively suppress the grid-connected current harmonics as THD of grid-connected current is 19.65% lower than that of PI controller.
Modeling and Performance of Mine MIMO Channel Based on Geometric Stochastic Characteristics
Authors: Li Haocong 
Published: December 2021

Abstract
MIMO technology has become one of the most promising content in mobile wireless communication, and it has shown positive application value in both application and innovation. On the basis of understanding the current development status of MIMO channel technology, this paper analyzes the standardization of MIMO to the future development trend according to the modeling of broadband dryness ratio of GBSM.
Performance Analysis of Navigation Signal Based on FH-BOC Modulation System
Authors: Zhang Minshu , Zhang Lixin , Xu Qibing , Bian Lang 
Published: December 2021

Abstract
Based on the traditional BOC modulation system, a new navigation signal system based on FH-BOC is proposed in this paper. The simulation and verification of FH-BOC signal are carried out, and the modulation characteristics, code tracking performance and anti-interference performance of FH-BOC signal are analyzed, and the advantages and disadvantages of the modified system are verified. The results show that FH-BOC signal has good ranging and anti-interference ability, which is suitable for navigation system and can reduce the ambiguity of BOC signal’s secondary peak to a certain extent. At the same time, the T has important scientific significance and application value to improve the countermeasure capability of other satellite navigation systems.
The Application of Manufacturing Execution System in Virtual Manufacturing
Authors: Pan Fangyu , Bai Yuewei , Liu Shupiao , Nie Li 
Published: December 2021

Abstract
Compaired with mart manufacturing and digital manufacturing, virtual manufacturing is a more advanced mode, which is more flexible, more inexpensive and more suitable for modern competitive society. No matter what type of manufacturing, Manufacturing Execution System (MES) is necessary and plays a key role. So this paper focuses on the MES in virtual manufacturing. MES serves as a bridge to connect the upper planning layer and the control layer of the factory. It has at least 8 functions, including data collection, production process management, human resource management, workpieces tracking, production planning and scheduling, quality control, documentation system and maintenance management. As a typical virtual manufacturing enterprise, the company A is chosen to be introduced, including the background, composition of MES and implementation of MES.
Research on Innovation of Design Education Based on Artificial Intelligence Technology
Authors: Yang Yan , Sha Zijian 
Published: December 2021

Abstract
The network teaching assistance system uses the form of dialogue to discuss the teaching content with students, the course schedule arrangement, the way and technology of teaching and training, which can effectively improve the teaching quality, shorten the teaching time and increase the teaching efficiency to achieve the established optimization of teaching purposes. In this paper, a forum system for experimental teaching is proposed, which aims to establish a public communication platform to serve the experimental teaching process, and to apply it to the exchange and study between the experimental instructors and students. Through text multimedia technology, the quality of experimental teaching is improved, and students’ practical ability and innovative thinking are cultivated. The experimental teaching forum uses B/S structure to design the interactive platform of information exchange, and presents the information to the user through the browser. The transaction logic is processed by the server side, and the front-end represents the exchange of information.
Research on Artificial Intelligence Machine Learning Character Recognition Algorithm Based on Feature Fusion
Authors: He Dongdong , Zhang Yaping 
Published: December 2021

AbstractWith the continuous progress of science and information technology, people begin to study in the field of intelligence, and machine learning is one of the key contents. At present, human beings have made some progress in intelligent robot, speech recognition and network search. The method of character recognition based on machine learning is of great significance to information technology. In this paper, an improved CRNN algorithm based on feature fusion is proposed, which combines Gabor features and Zernike moment features into a new feature vector, and then uses generalized K-L transform to compress the new feature dimension to remove redundant information. After testing, the accuracy of CRNN based on feature fusion on training data set and test data set is as high as 0.99, which shows that the neural network model can perfectly fit the training set of Chinese character recognition.
Research on Mountain Fire Detection method of UAV based on Mathematical Modeling method
Authors: Jiang Hongchao , Wu Di , Tan Yating 
Published: December 2021

Abstract
For the first question, we establish two main models for SSA drones and repeater drones respectively. For repeater drones, we establish a grid search model, aiming at terrain, repeater range limits and other restrictions, by gradually removing the grid points, work out the optimal position and quantity of the repeater drones. For SSA drones, we also use the grid search model, considering the flight parameters of SAA drones, to find the position of the charging station (EOC) and fully meet the charging needs of SSA drones. Considering the impact of the size of fire, we divide the size of the fire into three levels, which correspond to different SSA drones demand quantities, and referred to the VRPTW algorithm to solve the TSP problem with different node requirements. Finally, we use genetic algorithm to optimize.
The Technical Scheme Optimization of Nuclear Vessel Hydrostatic Test
Authors: Zhang Zhenguo , Feng Huixing , Zhao Weihua , Li Maochao , Xu Xiaobing , Li Jiuqiang 
Published: December 2021

Abstract
Nuclear vessel hydrostatic test is an important means of sealing and pressure resistance, because the nuclear vessel hydrostatic test involves important system and key equipment, how to optimize the nuclear vessel hydraulic test is a worthy topic. This paper discusses how to optimize nuclear vessel hydrostatic test technology, mainly from three aspects to optimize, such as the optimization of working ticket logic, the optimization of vessel hydrostatic test implementation, and the optimization of hydrostatic test equipment. Optimization of hydrostatic test scheme provides significance reference for plant maintenance.
Analysis of the level of community readiness in Kecamatan Penajam as a buffer area for the plan to move the Capital City of Nega
Authors: Syafitri E D , Dewanti A N , Ulimaz M 
Published: December 2021

Abstract
The transfer of the capital a state has been experienced by several countries with diverse reason. Problems the reason for conducting the capital city can happened again next new capital city when people are not capable of prepare. Capital city Indonesia planned to move in East Kalimantan. Locations planned to be the capital city are Samboja and Sepaku, Kabupaten Penajam Paser Utara. Displacement capital city Indonesia was one of national development giving effect in creating sustainable development, it is important to know the community condition of readiness to the development. Besides the transfer of the capital city, it is necessary to know the comunity condition of readiness as the supporting areas, this is important because community readiness which is at supporting areas will giving positive and negative effect to development. The purpose of this research analyzed levels of the readiness of the community in Kecamatan Penajam toward the transfer state capitals using community readiness model. The research showed the final score the readiness in Kecamatan Penajam are in the denial/resistance at level 2.
Measuring pedestrian accessibility of Transit Oriented Development area in surabaya (a study case: Joyoboyo Terminal)
Authors: Zahra A A , Ahyudanari E 
Published: December 2021

Abstract
The Surabaya government has embarked development of urban public transportation to reduce the tendency of private vehicle usage. Urban transport development is also coupled with strategic planning for development around stations, known as transit-oriented development (TOD). The TOD areas are still in pre-development planning phases as the Surabaya mass rapid transit project has not started yet. One of the pre-development planning TOD in Surabaya is Joyoboyo Terminal. This research aims to evaluate Joyoboyo TOD readiness to represent the area where people are physically able to walk. The accessibility of Joyoboyo TOD measured by distance traveled to Joyoboyo terminal. Findings showed only 53.04% of Joyoboyo TOD is accessible in current condition and it is increased 6.7% if scenario 2 applied. The accessibility map represents a suitable area for public space and a decent area for high-density housing in Joyoboyo TOD. These findings represent the basis requirements for developing a TOD area in Surabaya, especially Joyoboyo TOD.
The impact of physical and non-physical factors of houses on the tuberculosis endemic sufferer cases in Magelang
Authors: Husna P F , Musyawaroh  , Astuti W 
Published: December 2021

Abstract
The house becomes one of the basic human needs after food and clothing. The quality of the house is determined by physical factors and other factors such as the socio-cultural economy of the inhabitants. Tuberculosis is one of the most infectious diseases with high mortality in Indonesia, Central Java ranks third on the national scale after West Java and East Java in 2016. Magelang has the highest new cases of tuberculosis in Central Java at 775.32 per 100,000 population in 2016 and increase case 845.4 per 100,000 population in 2017. Tuberculosis infection occurs with various factors, including physical (home), and non-physical (socio-cultural and economic) of the inhabitants. The problem is how the physical and non-physical factors of the house affect on the endemic cases of tuberculosis patients in Magelang. The purpose of the study is to examine the effect of physical and non-physical factors on the increasing cases of tuberculosis patients in Magelang. In this article, the researcher uses qualitative descriptive methods with literature review. The results of this review literature will be used to examine empirical cases in Magelang.
Factors influencing adequate sanitation on domestic wastewater management of black water type in Margasari Village
Authors: Muliana R , Ghozali A , Ariyaningsih  
Published: December 2021

Abstract
Sanitation on the domestic wastewater management (WWM) component was a severe concern in the slums of Margasari Village, which has two characteristics area, administrative neighborhood above water, and neighborhood on land. The universal access to adequate sanitation was only 35.8%. Therefore, Margasari Village belonged in the priority zone of sanitation risk at a very high level for domestic wastewater problems. The purpose of this research was to identify important factors to increase the adequateness sanitation on the black water domestic WWM in Margasari Village. The questionnaires spread on 345 household samples taken at 32 neighborhoods as the data collection method. Identification factors had done through two stages of analysis. The comparative descriptive analysis used to determine characteristics of the domestic WWM black water type obtained the findings that the neighborhood above water had low users percentage of adequate black water domestic WWM. Second, binary logistic regression analysis was to identify the factors that affect the adequatess domestic WWM of black water type, four significant factors encompassing household income, knowledge level, financing willingness, and ease of technology. Significant factors not only increased adequate sanitation, but also contribute to the development of appropriate environmental and public health policies related to slums settlement.
Spatial distribution in the emergence of coffee shops in Surakarta
Authors: Maulana R R , Cahyono U J , Muqoffa M 
Published: December 2021

Abstract
The phenomenon of the rise of coffee-drinking has become a trend economic-cultural as globalization in lifestyle for the community in Surakarta. This coffee-drinking habit increasingly supporting the emergence of coffee shops that keep flourishing and the number continuously expand. Specifically, each coffee shop presents their own theme and display the architectural style that show its earmark of the coffee shops. It indicates that the growth of coffee shop has contributed to enrich the architecture in the city. The aim of the paper to identify spatial distribution patterns of the emergence of coffee shop in Surakarta. The research is carried out through spatial analysis, which is mapping the distribution of the coffee shops. Later, use spatial observation to find the patterns of distribution from the emergence of the coffee shop. As a result, is expected to be an outset for further research of spatial development structure as seen from the growth of coffee shop in Surakarta.
Javanese architectural concept on the spatial pattern of Surakarta Grand Mosque
Authors: Adityaningrum D , Pitana T S , Setyaningsih W 
Published: December 2021

Abstract
A mosque is a cultural product related to the system of ideas and activities of the community. Physically, the form of the Surakarta Grand Mosque is based on a view of life rooted in the beliefs of Javanese people’s religion, who have Islamic-Javanese religious beliefs. In particular, this study aims to identify and analyse elements of Javanese architecture that are applied to the spatial patterns of Surakarta Grand Mosque building. This study uses qualitative descriptive methods with narrative approaches. The study concludes that elements of Javanese architecture in the spatial pattern of Surakarta Great Mosque building have spatial pattern characteristics similar to traditional Javanese houses namely the Joglo House. From the architectural elements of Surakarta Great Mosque building there are local wisdom values that can be taken namely the value of truth, moral value, aesthetic value, and religious values.
Use of geographic information systems in crisis management
Authors: Brumarová L , Kukuliač P , Brumar J 
Published: December 2021

Abstract
Key factor in the crisis management decision-making process is complete, easy-to-use, and quickly available spatial information on protected interests, preparedness, and vulnerability in the area. Technology progression of geographic information systems help us significantly simplify and speed up this process. It helps us to visualize this essential information for the strategic level of crisis management.
The quality of bottom sediments in small water reservoirs located in agricultural watersheds
Authors: Junakova N , Balintova M , Junak J , Singovszka E 
Published: December 2021

Abstract
Silting of water reservoirs by sediments detached through soil erosion is a serious water management problem. One of the solutions is direct application of sediments to the soil. The aim of the paper is to monitor the quality of bottom sediments taken from selected water reservoirs in the eastern Slovakia (Hervartov, Nižný Žipov, Byšta) and to evaluate their quality according to legislation. The results showed that the concentrations of total nitrogen, phosphorus and potassium in sediments are higher than in soils taken from the vicinity of reservoirs.Simultaneously, it was confirmed that the sediment in the evaluated reservoirs meets the physicochemical parameters according to the Act No. 188/2003 Coll. for direct application to the soil.
Algae as a part of microorganisms involved in biocorrosion of cement composites with total replacement of natural aggregates by photovoltaic glass
Authors: Máčalová K , Kučová K , Václavík V , Dvorský T , Charvát J , Papesch R 
Published: December 2021

Abstract
Algae of the Pleurococcus, Trentepohlia and Stichococcus genera were selected for the experiment on the cement composites with total replacement of natural aggregates by recycled photovoltaic glass. The growth of the algae was monitored on cement beams with dimension 40 x 40 x 8 mm (length x width x height) and on the cement crumbling in various proportion. In the case of cement composites with recycled glass from photovoltaic panels, intensive growth was observed in the Trentepohlia genus from the Chlorophyceae class, while in the case of cement crumbling with recycled photovoltaic glass, the most obvious growth in biomass was recorded in the Pleurococcus genus; the Stichococcus and Trentepohlia genera showed minimal or zero growth. This minimal growth is mainly influenced by the pH value and the fact that biocorrosion is accompanied by the effect of symbiotizing microbiota, which mutually support each other, not just one species.
New modes of transport and their impact on international transport
Authors: Petrová M , Krügerová M , Kozieł M 
Published: December 2021

Abstract
Various alternative transport options are currently being developed. The business environment as well as legislation must respond to these. It is possible that in a few years we will encounter modes of transport that were unknown until recently. Whether it is air transport by drones or autonomous vehicles, these are just concepts that are at a more advanced stage of implementation. The task of the legislation will be to respond to these stimuli to avoid uncertainty. These changes will have a major impact on the international transport of goods. The advantage of these alternative modes of transport is the lower impact on the environment, when alternative modes are usually used to power them. The aim of this article is to identify opportunities of new modes of transport on international trade relations. The international legal environment must face new challenges and respond in advance to possible modes of alternative transport. The practice is known that if an adequate legal framework is not created, these alternative modes of transport will develop uncontrollably and after that it will be very difficult to introduce any changes or rules. One way to do this is to implement any changes to the Incoterms. There is also a variant of introducing uniform international standards or, in the case of EU directives, that would address this issue.
Condition of urban park infrastructure in the context of perceived security of park users
Authors: Polko P , Kimic K 
Published: December 2021

AbstractPersonal security is one of the key aspects affected by the perception of urban greenery, which plays an important role for city dwellers. The survey conducted in Poland in 2020 (N=394) aimed to check how important for park users in context of perceived security are selected factors related to maintenance of different types of park infrastructure (condition of equipment and pavement, also condition of greenery), level of park cleanliness (filling of the rubbish bins, litter on the ground, and graffiti on different types of facilities), and elements related to the use of park space (paths, varied topography, functional aids, and water). The condition of equipment was assessed as a factor of high impact (average of 4.13 in 5-point Likert scale), as well as the presence of park paths (4.02). The results indicate that all 10 of the examined factors are recognized as important (3 and higher). They also show that both women (compared to men) and older respondents (compared to those under 60) assessed higher the importance of factors related to the condition of elements of infrastructure and pavement, as well as the level of cleanliness in urban parks in shaping their personal sense of security.
Methodological development for teaching environmental management within the framework of the university research and teaching project in the Central of Heredia (March to September 2020), Costa Rica. A preliminary study
Authors: Durán Sosa R , Alexandre Castanho R 
Published: December 2021

Abstract
In January 2020, the “Urban and social reconfiguration project of Heredia, and youth population, 1985-2020” starts its operations. Its objective is to analyze the urban capacities for social life, and the imprint of young people has developed between 1985 to 2020 in Heredia. Thus, to achieve the proposed goals, a methodology is established that joins research and teaching areas. Consequences of institutional policies impact this methodology to come from a national emergency of Covid-19, which causes the substantial methodological changes of the project. This preliminary study aims to communicate the methodological challenges in teaching environmental management in the current context. The method is interviews applied to students and academics participating in the project, consultation of secondary sources, records, databases, institutional reports, and observation of areas representing a less epidemiological risk to researchers. The conclusions of this experience are the following: (i) changes in the techniques of the methods and tools used in science; (ii) resilience of academic staff to take on extra hours; development of new learning technologies; and (iii) approach to the pedagogical discussion related to the project in the current conditions, which it makes a solid and enriching panorama for academic issues.