bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydrodynamic and Sediment Transport Simulation at The Port of The Electric Steam Power Plant Adipala and Serayu Estuary, Central Java Province, Indonesia
Authors: Wahyudi Nazariano Rahman , Suntoyo  , Pratikto Widi Agoes 
Published: March 2021

Abstract
The coastal area of Cilacap Regency in Indonesia has an important role in increasing activity, economy and ecosystem. The research location is in the southern coastal area of Java and directly faces the Indian Ocean. This can lead to dynamic marine phenomena and cause various kinds of sedimentation problems. To analyze the phenomena that occur in Cilacap seawater, a numerical model is applied to obtain optimal results. MIKE21 software with Hydrodynamic and Sand Transport modules were used in this study to analyze the flow patterns and sediment transport that occurred. The model was built with Cilacap waters as the boundary and was made within 30 days. The result obtained is the model validation using the RMSE method shows a value of 16.33% so that the model is included in the good category. The average direction of the current pattern from the results of the model leads to the west and northwest. The current velocity at ebb is greater than at tide. The most significant bed level changes occurred at the mouth of the Serayu River and the east side of the breakwater.
Developing of Emergency Safety Device Module Under Vessel Integrated Automation System for Dual Fuel Diesel Engine
Authors: Saihilmi MI , Zaman MB , Santoso A , Kusuma IR 
Published: March 2021

Abstract
Using gas as a fuel of the ship’s main engines give challenges in term of efficiency, fuel prices, low emission, and safety behavior. Gas characteristics need particular attention due to higher flammable, explosive, and hazard gas leakages. Adopting gas as fuel onboard a ship insists on a higher level of safety as guided by the IGF Code. Conventional safety devices installed in the conventional diesel engines only aware of its combustion sensors. This study intended to develop a new PLC module that is capable of an automatic stop of the dual fuel diesel engine under any programmable emergencies. The developed module is integrated under the Vessel Integrated Automation System. The logical program manages the system to assure the continuous fuel service and stop the system when pre-defined hazards happened. Hazards are predicted from excessive pressure and temperature, flow rate, and gas leakages. The module in a form of software and hardware will be built using industrial tools.
Water Quality Modeling Distribution at Bali Strait in the Western Monsoon and Its Impact for Ecosystems
Authors: Suntoyo Octavia Prihanesti Kartika Rini , Wahyudi  
Published: March 2021

Abstract
The Bali Strait is geographically located between Java and Bali Island, with a total area approximately 900 square miles. It has a high potential of fish produces an average of 100 tons/year. The types of fishes there are tongkol, layang, and lemuru with high economic values. Bali Strait affected by the oceanographic phenomenon of upwelling in the Indian Ocean and has shallow and narrow bathymetry conditions made high currents speeds. The abundance of nutrients in Bali Straits made the ocean water fertile and rich in fish give an advantage for anglers. The nutrient is present in Bali Strait caused by water flow from land. These conditions is become triggers for an explosion of phytoplankton populations or called booming algae. The shrimp waste from companies disposing of the waste to Bali Strait consists of parameter DO, BOD, COD, TSS, Phosphate, and Nitrate. Research on the distribution of water quality in Bali Strait in the Western Monsoon has to research, where previous researchers have researched in the Eastern Monsoon. The purpose of this research is to find out the distribution of water quality parameters in the Bali Strait using MIKE 21 Ecolab [1]. The result of this research shown the maximum distribution exceed water quality parameter and influence for the biota are BOD = 83.031 mg/L, Nitrate = 0.924 mg/L, Phosphate = 0.176 mg/L and TSS = 27.574 mg/L. The BOD makes the water polluted, Nitrate and Phosphate is the trigger for booming algae, and TSS is not suitable for coral and sea grass.
Design of Control Method for Improving Current Quality of Wind Power Grid-Connected Inverter
Authors: Li Y , Zhang Z Y , Wang P G , Zhuang Y , Liu S 
Published: March 2021

AbstractThe problem of suppression of nonlinear random impulse disturbance in grid-connected wind power generation is studied in this paper. The mathematical model of grid side converter of wind power system is obtained by using Kirchhoff law. A feedback synchronization controller is designed to suppress the disturbance of current. With the help of Lyapunov stability theory, the effectiveness of the synchronization controller is verified. Further effectively restrain the nonlinear random disturbance caused by the current connected to the grid, so that the current generated by the wind turbine is synchronized with the current generated by the power grid. Finally, the simulation verification is carried out. The simulation results show that the effectiveness of the proposed control method.
Numerical Study on Optimizing the Geometry of Segmented Asymmetrical Thermoelectric Generator
Authors: Luo H C , Cheng L S 
Published: March 2021

Abstract
Quite large amount of heat generated in various industrial processes was wasted. Recovering the waste heat can save cost and benefit the environment protection. The device that convert heat energy to electricity is called thermoelectric generator (TEG), and therefore it can be used for waste heat recovery. Improving the efficiency is the main direction of present study. The configuration and geometry of the thermoelectric legs are proved can influence the thermoelectric performance of the thermoelectric generator. Compared with the conventional TEG which is assembled with symmetrical (rectangular) legs, asymmetrical thermoelectric generator (ATEG) has a greater temperature gradient in a leg due to the convergent geometry which can reduce overall thermal conduction of the device and Thomson effect is also harnessed. In this study, three-dimensional finite element analysis (COMSOL) is employed to investigate the numerical simulations of a segmented pyramidal thermoelectric generator (SPTEG) and a segmented cone thermoelectric generator (SCTEG) to optimize the leg length ratio of two materials, and it’s effect on the electrical and mechanical performances of SPTEG and SCTEG was also studied. Results obtained shows that the height ratio of SATEG can influence electrical and mechanical performances and the optimum height ratio provided a better electrical performance while thermal stress developed in leg was less. In addition, the open-circuit voltage of two types SATEG is similar because they have the same cross sectional area and the same volume, however, SCTEG has a dispersive thermal stress distribution while the thermal stress of SPTEG concentrates in four corners. Compared to the maximum von Mises stress in SPTEG, the maximum von Mises stress in SCTEG reduced about 10%. Results obtained from this study would provide references in producing and design of segmented asymmetrical thermoelectric generators.
Finite Element-Neural Network Hybrid Modeling of Complex Dynamic Systems
Authors: Fu J P , Zhao H M , Zhang H T , Su S X , Ji C J , Chen F 
Published: March 2021

Abstract
This study involves a new hybrid modeling method for finite element-neural network complex dynamic systems. Dynamic modeling of components with linear-elastic properties is obtained by using the finite element method (FEM) in complex dynamic systems, while the dynamic characteristics of the nonlinear elements were described by neural networks. They may be connected by force or displacement to generate the dynamic hybrid model of the entire system, which effectively combined the characteristics of finite element modeling and neural network modeling. The relevant characteristics include clear physical structure, high modeling precision, small network scale, and fast training speed. The mode reduction method is applied to reduce the computational load for the response prediction of the hybrid model. Simulations of hybrid modeling for dynamic characteristics in the vibration isolation systems of steel wire rope are performed to demonstrate the effectiveness of the proposed method. This result provides an effective approach for modeling the complex dynamic system with an elastic structure, which includes nonlinear element components.
Spirulina: growth in continuous and batch bioreactors and response to stress conditions
Authors: Mikryukov Anton , Sablin Vitaly , Martseva Diana , Tarasova Nadezda , Travkin Vasili , Solyanikova Inna 
Published: March 2021

Abstract

Spirulina platensis is a cyanobacterium with high biotechnological potential. Optimization of the cultivation conditions of spirulina takes place constantly, to increase the yield of this valuable crop. An important economic indicator of the process is an increase in the yield of biomass and a decrease in the cost of its production. For example, avoiding the need to cultivate spirulina at elevated temperatures with at least equal biomass yield. The purpose of this work was to develop and compare methods for cultivating Spirulina platensis in two bioreactors, continuous and batch ones, and to assess the resistance of spirulina cells to environmental stress caused by the presence of household chemicals. It was shown that, at room temperature, the wet biomass yield was higher in the bioreactor than with batch cultivation in flasks. However, a decrease in temperature leads to a decrease in the number of colony forming units. The presence of compounds such as phosphates and phosphonates from household chemicals in the cultivation environment negatively affects the survival of Spirulina cells, which reflects the general trend of a decrease in the number of microorganisms as a result of environmental pollution with surfactants.
Research progress on the effect of drought on root system of summer maize
Authors: Yan Si-Ying , Weng Bai-Sha , Jing Lan-Shu 
Published: March 2021

Abstract
Under the background of global climate change, the occurrence of extreme climate events is becoming more and more frequent. Drought has become one of the most extensive and far-reaching disasters in the world. Drought is an objective natural phenomenon. In the past, researches on drought mainly focused on two aspects: one is the relationship between climate and drought; the other is the impact of drought on crops. The effects of drought on crops are shown in various aspects. In this paper, the effects of drought on summer maize roots and the main techniques and methods of root research were reviewed. In the results, previous studies mainly focused on the growth and development of summer maize, as well as the configuration, physiology and internal anatomical structure of root system, but the explanation of mechanism was relatively less. In addition, the effect of drought on the root system of summer maize was not completely damage, but also had compensation effect under certain water conditions. The future research is also prospected.
Effects of different calcium concentrations on the outdoor growth of Nostoc sphaeroids Kütz
Authors: Xia Yixue , Wang Yang , Deng Linfeng , Li Hengjiang 
Published: March 2021

Abstract
The technology of indoor cultivation of Nostoc sphaeroids Kütz is relatively mature, but for industrial cultivation, indoor cultivation has the disadvantages of high energy consumption and high cost. In order to find the appropriate amount of calcium concentration required for outdoor cultivation, and to pave the way for mass production of Nostoc sphaeroids Kütz, in this study, the Nostoc sphaeroids Kütz wwas cultivated. The pH, chlorophyll content, polysaccharide content, protein content and phytolithoprotein content of Nostoc sphaeroids Kütz were measured in different concentrations of calcium nutrient solution. The result showed that, with the increase of calcium concentration in outdoor cultivation, the growth of Nostoc sphaeroids Kütz was firstly inhibited and then promoted.
Research progress of capacitive deionization technology
Authors: Du Chun-An , Fu Yun-Xiang , Ma Yu-Hao , Sun An , Luo Yong-Ming 
Published: March 2021

Abstract
Capacitive Deionization (CDI), a recently developed water treatment technology, has proved to be superior to traditional desalinization processes such as reverse osmosis (RO) in terms of high environmental friendliness, simple operation, and low energy consumption. This paper reviews the progress of research into CDI technology with focus on electrode materials and factors affecting CDI such as voltage and plate spacing. It also discusses existing problems and predicts the future development direction of this technology.
Comparative study on main components and detection methods of Pericarpium Citri Reticulatae from different habitats
Authors: Liu Ming-Shi , Wang Jing , Deng Hui-Dan , Geng Lu-Lu 
Published: March 2021

Abstract
There are many chemical constituents in Pericarpium Citri Reticulatae, such as flavonoids, volatile oil, alkaloids and so on. This paper compares, analyzes and summarizes the main components of Pericarpium Citri Reticulatae from different producing areas and different detection methods. The results showed that although they all have the same chemical composition, there are also differences between them, which leads to the difference of medicinal effect. The contents of hesperidin and hepthoxyflavone in Fuju, Sichuan Dahongpao and Wenzhou tangerine were the highest. There are four main types of detection methods of tangerine peel, which are spectrophotometry, electrochemical method, chromatography, gas chromatography-mass spectrometry. When the content of total flavonoids in Pericarpium Citri Reticulatae is measured, spectrophotometry is often used. Both electrochemical method and chromatographic method can be used to determine the content of specific flavonoids. Chromatography can also be used for the separation of flavonoids and the identification between Pericarpium Citri Reticulatae and Citrus reticulate Blanco‘chachi’ (Guangchenpi). However, gas chromatography-mass spectrometry (GC-MS) is mostly used for the determination of volatile compounds in Pericarpium Citri Reticulatae. With the development of science and technology in the future, it will be more in-depth to explore the composition differences of Pericarpium Citri Reticulatae from different habitats, and more efficient detection methods will be used for research.
Grape planting situation and regional spatial analysis in Xinjiang, China
Authors: Wu Jiuyun , Liu Liyuan , Xu Guixiang , Jiang Jianfu , Lian Weijia , Zhou Hui , Nan Lijun , Ren Hongsong 
Published: March 2021

Abstract
With the rapid development of China’s grape industry and the improvement of breeding and cultivation management technology, great changes have taken place in Xinjiang grape planting. By the investigation of grape planting distribution in recent ten years in China, using geographic information technology (GIS) to analyze the changes of Xinjiang grape production layout and agglomeration characteristics, summed up the layout and development of Xinjiang grape industry, in order to provide reference for optimizing regional grape variety structure. The results showed that the grape industry in Xinjiang has entered a high-quality development stage, grape planting in the spatial distribution showed an expansion trend, the degree of concentration and imbalance was slightly reduced, the regional layout and variety structure were optimized to some extent, but the grape industry in Xinjiang was still in a high degree of centralized distribution
Modeling problems legal regulation of the field of artificial intelligence
Authors: Antonov V.V. , Kharisova Z.I. , Kalimullin N.R. , Abdulnagimov A.I. 
Published: March 2021

Abstract
The analysis of the current state of regulation issues at various levels of the development and application of artificial intelligence systems is presented. Key issues in the field of regulation of robotic systems are considered. Possible threats are described, a model for the formation of artificial intelligence systems, including the ones for high-risk facilities is proposed.
Cloud processing of security events for VANET distributed sensors
Authors: Bolodurina I P , Ushakov Y A , Parfenov D I , Cui J 
Published: March 2021

Abstract
Machine-to-machine communication networks, which are related to human activities, are today one of the fastest growing IT sectors. The most vulnerable in terms of security is the Internet of Things and VANET segments. When devices interact, various types of targeted attacks are possible, as well as failures or random dangerous events. The handling and response to security events, in this case, must be fast. However, the specificity of VANET networks does not allow the use of classical intrusion prevention systems due to the constant movement between connection points, for example, in LTE or 5G networks. The article is devoted to the possibility of quickly deploying a cluster of security events analysis based on containerization on existing virtual machines that are closest to the event source. The analysis of the scaling speed, as well as the performance limits of event processing processes on various configurations of the data analysis cluster.
Possible lightweight modification of hashing algorithms GOST R 34.11-94 and GOST R 34.11-2012
Authors: Bystrevskii S A , Borshevnikov A E , Starodubov M I 
Published: March 2021

Abstract
The paper discusses the development of a lightweight modification of the hashing algorithms GOST R 34.11-2012 and GOST R 34.11-94. The quality of optimization of the obtained algorithms and their safety are considered.
Analysis of the Use of Artificial Immune Systems
Authors: Mikherskii R M , Mikherskii M R 
Published: March 2021

Abstract
Artificial immune systems are systems of artificial intelligence at the basis of work, which are based on the principles of the functioning of the biological immune system. These systems are of great interest from researchers developing models and algorithms in the field of machine learning for solving complex computational and engineering problems. In the presented work, a review of modern methods for the implementation of artificial immune systems is carried out, taking into account the results obtained recently.
Poisoning attack of the training dataset for on-line signature authentication using the perceptron
Authors: Kostyuchenko Evgeny , Lodonova Balgit , Usoltsev Yakov , Konovalov Artem 
Published: March 2021

Abstract
The study of the dependences of the effectiveness of a poisoning attack for the task of on-line signature authentication using a perceptron to make a decision. The dependences on the structure of the neural network, the volume of poisoning sets and the noise of the training sample were studied. Conclusions are drawn on the lack of the ability to detect such attacks by changing the overall accuracy of the system.
A method for controlling groups of unmanned aerial vehicles in a virtual environment using haptic gloves
Authors: Antonov V O , Arustamov D A , Zavolokina U V , Apurin A A 
Published: March 2021

Abstract
The development of control of unmanned aerial vehicles (UAVs) is caused by the lack of developments that allow you to perform a fully autonomous flight to the target position with automatic bypass of static and dynamic obstacles. To ensure the correct execution of the flight task, many methods and algorithms have been developed, however, almost all of them are designed only for performing the UAV flight task in manual or semi-automatic mode. However, there are no widely available developments that allow you to perform a fully autonomous flight. Also, existing UAV control systems have low interactivity, due to the fact that the operator uses a two-dimensional map to control the UAV and also most often one joystick to control one UAV. Based on this, the purpose of this work is to increase interactivity and visibility in the management of UAV groups by developing a system for forming a flight task and control in a virtual environment using haptic gloves. The creation of a system for forming a flight task and managing groups of UAVs will allow the use of UAVs in various areas of human activity, including in conditions that are dangerous to human health and life. The description is presented, both mathematical and software. The advantages, disadvantages and limitations of the proposed method are analyzed.
Improving the Efficiency of Non-Autoclaved Silicate Materials Based on Aluminosilicate Feedstock through the Use of a Synthetic Crystalline Filler
Authors: Volodchenko A A 
Published: March 2021

Abstract
Currently, there are various ways to improve the performance specifications of building composites of various functional purposes. Thus, one of the possible ways to improve the performance specifications of building materials is to control and modify the composite structuring processes at the microlevel by using of various crystal seeds. The studies have established the possibility of improving the performance specifications of non-autoclaved silicate materials based on non-conventional aluminosilicate feedstock, which consists in the crystallochemical modification of the CaO-SiO2-Al2O3-H2O system with a synthetic crystalline filler C-S-H mainly represented by low-basic calcium hydrosilicates of variable composition. The optimal CaO and crystalline filler C-S-H contents at which the maximum strength characteristics are ensured are 8 and 2.5 %, respectively. The use of the synthetic crystalline filler in the technology of non-autoclaved silicate materials based on non-conventional aluminosilicate feedstock allows increasing the softening coefficient by 15-20% which may expand the scope of this material.
Architectural and City-Planning Appearance of Multifunctional Transport and Transfer Units as Exemplified by Moscow
Authors: Shamaeva T 
Published: March 2021

Abstract
When developing multifunctional passenger traffic systems, two functions must be considered: that of a transfer hub and a commercial facility. Multifunctional transfer systems (90% of the facilities examined) are constructed in two stages. Firstly, the transfer hub gets built and commissioned. It facilitates comfortable passenger transfer and service between different means of transport. The average land area proportion of a transfer hub (TH) in a land-use project (LUP) amounts to 35-55%. The commercial space takes up about 45-65% of the entire LUP area. Transfer hubs (100%) comprise buildings and other constructions that serve various purposes, which manifests their multifunctional system properties. Parking lot design should become an integral part of developing TH units not included in the commercial part of the facility.
Developing such facilities is a multi-stage process engaging specialists from various and vast areas. This type of dominant facilities are important to cities in terms of both transportation and architecture or city-building, and thus they require an individual approach to their development and construction.