bluuebunny/crossref_metadata_2025_split huggingface dataset:
A platform approach to the organization of digital forest monitoring of the Baikal natural territory
Authors: Bychkov I V , Ruzhnikov G M , Fedorov R K , Popova A K 
Published: December 2020

Abstract
This paper describes a platform approach to the organization of digital environmental monitoring of the forest resources of the Baikal natural territory (BNT), some characteristics of the current state of forests in the BNT and schemes of organization of state environmental monitoring in a traditional format. Some features and problems of forest resources monitoring of the BNT that complicate decision-making are formulated. Some basic requirements for digital forest monitoring and types of digital platforms of different levels are considered.
Geospatial meteorological and climatic data services application programming interface
Authors: Titov A G 
Published: December 2020

Abstract
At present, it becomes necessary to develop software for Earth science data repositories instead of downloading data to computational servers and workstations. This is especially important taking into account the upcoming volume of big environmental datasets. WPS (Web Processing Service) is an OGC standard for distributed geospatial data processing services. The WPS services provide access to geospatial data processing packages including statistical processing software tools. The main goal of this paper is to present an approach that provides a unified access to the web processing services developed for climate and meteorological research based on the latest technological and scientific achievements. Based on the “OGC API-Processes” standard, a Web API Climate is proposed to provide a uniform access to the “Climate” platform (http://climate.scert.ru/climate/environment/v3.0a-demo/) geospatial services. The Climate Web API provides a software basis for an advanced development and use of the “Climate” platform web processing services aiming at climate change studies at regional and global levels. A correct implementation of the specification will form a solid foundation for further development of desktop client applications in the form of GIS plugins, as well as universal Web-GIS clients easily embedded into thematic virtual research environments.
Local climate zones in the city of Nur-Sultan (Kazakhstan) and their connections with urban heat island and thermal comfort
Authors: Berlessova A A , Konstantinov P I 
Published: December 2020

Abstract
Nowadays, under the conditions of modern development, an increase in population leads to a significant increase in urban settlements with their specific characteristics, which in turn may have a significant impact on the formation of special microclimatic conditions within cities. Due to territorial expansion of cities, most of them are developed at a significantly high speed, which may lead to dramatic changes both for the residents and for the environment within the cities. Since urban planning has been developing for a rather long time, there are many ways to regulate this process by taking into account local physical and geographical features. This work is devoted to relationships between various microclimatic indicators of changes in the structure of buildings. It is shown that an increase in the share of compact high-rise (local climate zone (LCZ)-1) and mid-rise (LCZ-2) buildings is reflected in an increase in the intensity of the urban heat island, both in average annual (+0.4…+0.5°C) and seasonal variations (+0.75°C for summer). This in turn causes an increase in the PET (Physiological Equivalent Temperature) thermal index (increasing of frequency of strong and extreme heat stress conditions) and a decrease in the UTCI (Universal Thermal Climate Index).
Sky View Factor (SVF) assessment in a real-time system for thermal comfort conditions monitoring in the Moscow region
Authors: Perkhurova A A , Varentsov M I , Samsonov T E , Kargashin P E , Korosteleva P A , Konstantinov P I 
Published: December 2020

Abstract
Comfort indices are used to assess the harm to human health caused by unfavorable thermal conditions. All calculated indices are based on both meteorological and physiological parameters. An algorithm is used which is based on a model RayMan for calculating two of the most common thermal indexes: PET and UTCI, which are based on a balance of human energy or models of human heat fluxes. The purpose of this research is to develop a real-time system of calculating comfort indices based on data of a web service for monitoring weather conditions in Moscow and the Moscow region. The technology is based on the use of specialized libraries of the Python language (pyautogui, pywinauto) to interact with the keys of a keyboard and a mouse, because it is necessary to write paths to files and make keystrokes in the model. The result is presented in a visually understandable form with a spatial distribution of the thermal stress in the form of points with signed index values at the locations of weather stations throughout Moscow and the surrounding areas. A test of sensitivity of the RayMan model to changes in a sky view factor (SVF) is also carried out. It is shown that the PET index is more sensitive to changes in SVF than UTCI. An assessment is made of the summer frequency of occurrence of cases with unfavorable levels of the thermal stress (taking into account SVF) at stations of the Roshydromet network in Moscow and the Moscow region. It is shown that during the controversial summer of 2019, the points where strong and extreme heat stresses most often occurred are located within the territories of Domodedovo and Sheremetyevo airports.
The effects of wind on the generation of surface wave in a shallow water
Authors: Fauzi Rifky , Wiryanto L. Hari 
Published: December 2020

Abstract
In this paper, the generation of surface waves by wind is modeled using an extended shallow water model. Jeffreys’ sheltering mechanism is incorporated to model the wind action on the surface. This modification allows the model to have a wave grow or decay mechanism under the action of wind. The wave generation or damping is investigated by calculating critical wind velocity to excite oscillatory waves on the surface. The result shows that critical wind is proportional to a numerical constant, namely the sheltering coefficient, which related to the capability of wave overcome the wind gust. Thus this model has the convenience that the critical wind speed may comparable to physical data for a suitable choice of this constant.
Miocene Sea Surface Dynamics in the Western Equatorial Pacific Based on Calcareous Nannofossil Records
Authors: Yuwono Fareza Sasongko , Sato Tokiyuki 
Published: December 2020

AbstractCalcareous nannofossil in the sediments from Ocean Drilling Program (ODP) Hole 806B in the Ontong Java Plateau have been examined to reconstruct surface water condition in the western equatorial Pacific (WEP) throughout the Miocene. By using quantitative techniques, 107 sediment samples have been prepared into nannofossil slides and observed under microscope. Changes inReticulofenestrasize variations,Discoasterrelative abundance and nannofossil accumulation rates (NAR) suggest that WEP surface water was dynamic. During early to middle Miocene from 18 to 14 Ma, the surface water was warm and depleted in nutrient with deep thermocline due to warm period of the Middle Miocene Climatic Optimum. Temperature cooled, nutrient increased and thermocline shoaled at 14 Ma during the East Antarctic Ice Sheet Expansion (EAIE). Surface water warmed and thermocline deepened after 13.2 Ma as the western Pacific warm pool (WPWP) began to established. At 9 Ma, surface water suddenly changed into cooler and nutrient rich condition. The collapse of ocean stratification coincided with the onset of Asian Monsoon Intensification. Warm surface water and deep thermocline occurred again in the latest Miocene as the brief return of the WPWP during 7–6 Ma.
Study of tidal effect on water mass stratification in Mahakam estuary using 3D hydrodynamic model
Authors: Wiyani R I , Mandang I , Mubarrok S 
Published: December 2020

Abstract
Mahakam Delta is a delta with unique characteristic. As a result of the continuous sedimentation process, the delta can be said as a complex delta because it has dozens of tributaries that are interconnected and flow into the sea to their estuaries. Mahakam Delta estuary is a meeting place for mixing masses of water from freshwater rivers and high salinity rivers. The aim of this study is to determine the water column stratification seen from the salinity and temperature parameters in the Mahakam Delta estuary. This study uses the ECOMSED model which is run for 40 days (July 7 to Augustt 16, 2018) with tides and river discharge as the generating force. The simulation results show that stratification is predominantly influenced by differences in salinity between the layers. The strongest stratification is located in the northern Mahakam Delta line with a difference in salinity is 8 psu from surface to bottom layer.
Tropical marine Navicula salinicola NBO: morphology, genetic identification, and biochemical properties
Authors: Rachmayanti Y , Mwebaza H , Radjawane I M , Nurachman Z 
Published: December 2020

Abstract
Indonesia’s oceans are rich in microalgae as unicellular photosynthetic organisms. So far, most of Indonesia’s diverse microalgae have yet been explored. An Isolate NBO of microalgae has been collected from Bokor Island in the Jakarta Bay, Indonesia. This study aimed to identify the isolate NBO and to characterize its biochemical properties. The identification was carried out based on the physical morphology of cell and the nucleotide sequence of 18S rDNA-V4 and LSU D2/D3 DNA regions, meanwhile, the biochemical properties were characterized based on the content of carbohydrate, lipid and fatty acid of cells. The results showed that the morphological characteristics of NBO cells possessing a color of pale yellow, an oval shape ranging from 11.00–15.00 μm in length and 4.67–5.00 μm in width, and a silica frustule that bilaterally symmetrical oval closed to genus Navicula. Based on the homology of sequences 402-bp of 18S rDNA-V4 and 591-bp of LSU D2/D3, the isolate was identified as Navicula salinicola. Total carbohydrate and lipid contents of Navicula salinicola NBO were 13.13 and 3.74% (w/w), respectively. Fatty acids of Navicula salinicola NBO were dominated by palmitic acid (C16:0), palmitoleic acid (C16:1), and eicosapentaenoic acid (EPA; C20:5) with a total concentration of 38.24, 37.23, and 12.54% (w/w, fatty acid/lipids), respectively, indicating a promising candidate for biodiesel and nutrition/ pharmaceutical.
Studying Sea Level Variability in Indonesia Sea Based on Satellite Altimetry
Authors: Sarsito Dina A , Syahrullah Muhammad , Wijaya Dudy D , Pradipta Dhota , Andreas Heri 
Published: December 2020

Abstract
Sea level variability is one of the fundamental parameters for scientific development such as modeling the Earth’s climate. In addition, this parameter also playing crucial rules to mitigate socio-economic hazards due to sea-level changes, especially in coastal areas. Mitigating the sea-level hazards in an archipelagic country like Indonesia becomes more essential since the country is geographically constructed by various bathymetric depths with different types of seas. One of the attempts to study sea-level variability is to take benefit from satellite altimetry data. The satellite altimetry missions have observed the sea level more than 25 years, and hence the rate of sea-level variability can thoroughly be studied by comparing Mean Dynamic Topography with Sea Level Rise in the research area. The result shows positive and negative correlation in several areas that can be examined as regional-scale variations in sea level over the Indonesian sea.
Research on Exploration and Application of Wind Energy
Authors: Huang Jin 
Published: December 2020

Abstract
At present, coal is the most important resource for utilization and development in China, but the environmental pollution caused by coal is serious. It is urgent to improve the development of clean energy. China is gradually promoting wind energy, the development and utilization of wind energy is difficult. The difficulty of storing wind energy and its instability limit the country’s spread. Wind energy can only be developed better by solving the current problems. The research on the development and utilization of wind energy also becomes the key to solve the problem.
Design and development of turbine blade classification management system based on PDM
Authors: Ma Lyuzhou 
Published: December 2020

Abstract
According to the requirements of modern enterprises for the classifying and managing system of product information, the structure of the flexible classifying and managing system based on internal and external codes is putted forward, the function and effect of every part are particularized, which was applied in the implementation of the PDM of turbine blade. It is shown from the application that classifying and managing system can promote the development of information in the enterprise.
Development Situation and Relevant Inspiration of Pumped Storage Power Station in the world
Authors: Luo Youkun , ShengXin  , ZhiyuanQiao  
Published: December 2020

Abstract
In many countries, pumped storage power stations have gradually become management tools for the power system and are used to meet peak-shaving, valley filling and emergency reserve purpose. In addition, pumped storage power stations can be taken advantage of the unique valley filling function to facilitate the development of wind power, such as in Germany, one of the main approaches to digesting and saving wind power is to maintain a high share of pumped storage power generating capacity. Main factors affecting the scale and share of pumped storage power generating capacity include level of economic development, regional load characteristics, power mix and the peak-shaving capacity of interconnected systems. The capacity of pumped storage power stations is also affected by construction conditions, cost and the economics of other peak-shaving approaches of the power system. In China, the construction of pumped storage power stations is entering a fast-growth period. The government should incorporate the construction of pumped storage power stations into its long and medium-term power development plans and regard pumped storage power stations as part of regional power system. In addition, all of the functions offered by pumped storage power stations should be compensated by ancillary services supporting schemes.
Research on filter parameter optimization method of grid-connected photovoltaic system
Authors: ZhuoqunZhao  , HongjunWang  , Zhao Hui 
Published: December 2020

Abstract
With a large number of distributed energy and nonlinear loads such as photovoltaic and wind power are connected to the power grid, while improving the energy structure of the grid, it also greatly increases the harmonic content in the power grid, resulting in the decline of power supply quality and stability. In this paper, based on the analysis of the working principle of photovoltaic power generation system and the characteristics of the filter connected to the power grid, taking the inverter composed of high-frequency power electronic devices as an example, the principle of high-order harmonic generation is analyzed. According to this, a T-type filter is designed to suppress harmonics. The relationship between thd and filter parameters is studied, and the optimization method of T-type filter parameters is proposed Law.
Performance Analysis of SOFC / GT Combined Cycle System with Preheater in Front of Turbine
Authors: Xingsheng Lao , Mengran Liao , MaCan  , Chunhui Dai 
Published: December 2020

Abstract
Based on the SOFC zero-dimensional model, a SOFC turbine combined cycle simulation platform is established. For the SOFC/GT combined cycle system configuration scheme with the preheater placed in front of the turbine, the influence of cycle parameters on system performance is analyzed. The current density-power characteristic curves at different outlet pressures, the fuel flow-efficiency characteristic curve and the turbine inlet temperature curve at different fuel utilization rates were calculated and analyzed separately when different low-temperature and intermediate-temperature combined cycle system configurations were used. The results show that the low-temperature SOFC/GT cycle maintains high-efficiency design conditions with a fuel utilization rate of 0.8-0.85, and the highest efficiency is about 52%. The design working pressure of the medium temperature SOFC/GT cycle is suggested to be 0.4MPa-0.5MPa, and the system efficiency will be higher than 50% when the compression ratio is at 0.8-0.85, and the maximum efficiency is about 64%.
Sedimentary characteristics and hydrocarbon potentials of longitudinal gravity flow deposits in the east subsag of Saihantala Depression
Authors: Yanchen Guo , Xuntao Yu , Yawen Xing , Heqing Feng 
Published: December 2020

Abstract
Nowadays, Longitudinal gravity flow deposits, as a kind of important deep-water reservoirs, can form a certain scale of lithologic oil and gas reservoirs, which is of fundamental significance in the exploration of oil in Saihantala Depression. The evolution and sedimentary characteristics of the longitudinal gravity flow in the east subsag of Saihantala Depression are analyzed based on the core date, well logging, seismic data, regional geological data, and the method of seismic sedimentology. The sedimentary model of the longitudinal gravity flow and the exploration potential of the lithologic reservoir of longitudinal gravity flow are also discussed. The reservoir is mainly composed of medium-fine sandstone with developed secondary pores. The geological conditions for the formation of axial gravity flow are sufficient provenance, the development of slope breaks and the negative axial topography. The updip direction of the longitudinal gravity in the area has a short extension of the sand body, and the downdip direction has thick massive fine sandstones, which opens up pathways for lithologic reservoir exploration.
Model Predictive Current Control of Dual-Permanent-Magnet Vernier Motor based on Anti-Windup Controller
Authors: Liu Yushun , Zhu Taiyun , Wu Shaolei , Li Senlin , Wu Binyu , Huang Zhifan 
Published: December 2020

Abstract
Dual-permanent-magnet vernier motor incorporates the merits of high torque density and low cost, suitable for low-speed high-torque applications. Due to integral saturation and high current ripples in dual-permanent-magnet vernier motor control system, a model predictive current control strategy based on Anti-Windup PI controller is proposed. Adaptive adjustment variable structure is adopted in integral segment of the controller, which can quickly eliminate integral saturation in system. Mode predictive current control based on dual vector is adopted in current interior loop of the system, double arbitrary voltage vector can be selected to operate simultaneously in each control cycle that extends selection range of voltage vector and adjustment range of amplitude, which can realize more accurate current control. Meanwhile, considering system delay, current delay compensation is added to predictive control. The simulation results showed that proposed control strategy can effectively restrain integral saturation, reduce current ripples, thus improving dynamic and steady state performance of the control system.
An Effective Algorithm for Economic Dispatch of Power System with Prohibited Operating Zone
Authors: Wang Shibo , WeiTeng  , Wang Nan , Cheng Yan , Sun Shumin , Xing Jiawei , Wang Yanzhuo 
Published: December 2020

Abstract
In the actual operation of the power system, some generating units may have physical limitations. For a unit with prohibited operating zone, its operation zone [Pmin, Pmax] will be divided into several discrete sub feasible regions. In this paper, the influence of units with prohibited operating zone on the system is deeply studied, and the influence of units with prohibited operating zone on other units in the system, including the influence between units with prohibited operating zone, and the optimal solution state of economic dispatch problem for units with prohibited operating zone are further studied. Then the iterative algorithm for the above three problems is modified. At the same time, the economic law and physical essence of the economic dispatch problem for units with prohibited operating zone are explored. With high calculation efficiency, the algorithm proposed in this paper has its own engineering application value.
The application of Cr-MOF@MWCNT modified separator in high-performance lithium-sulfur batteries
Authors: Ma Bingqing 
Published: December 2020

Abstract
Lithium-sulfur batteries have attracted attention when competing with the next-generation of rechargeable batteries due to their higher theoretical specific capacity, lower cost, and non-toxic and harmless feature. However, there are many obstacles towards the practical application of lithium-sulfur batteries such as low conductivity of the positive electrode and discharge products, the “shuttle effect” of polysulfides, and the unsafety of the lithium negative electrode. In this paper, Cr-MOF@MWCNT as a separator modification layer is introduced into lithium-sulfur batteries to solve the problem of “shuttle effect”. The Cr-MOF in the coating layer can adsorb polysulfides, and the MWCNT tightly combined with Cr-MOF helps to build a good conductive network, so that the adsorbed polysulfides can be converted. As the initial specific capacity and cycle stability of lithium-sulfur batteries with the Cr-MOF@MWCNT separators have been improved, the initial specific capacity is as high as 1377 mAh g−1 at a rate of 0.2 C, while the average capacity attenuation per cycle after 300 cycles is 0.14%, with 99.8% of coulombic efficiency.
Analysis of Rapid Demand Variation in Electric Vehicle Industry based on Innovation Diffusion Theory
Authors: Li Jiping , Zhang Jingjing , Zhao Zhihong 
Published: December 2020

Abstract
The emerging industries are usually driven by innovations and represent the development directions of advanced economic. Particularly, this manuscript explores the innovation diffusion and S-Curve theoriesto study emerging industries which are characterized with rapid demand variations, where the new energy vehicle industry serves as an example. The S-Curve is deduced in detail as a theoretical foundation for the study of the rapid demand changes of emerging industries. Base on authority data of vehicle sales in past decades, the NPS and EV30@30 scenarios from IEA are analysed to reveal the worldwide trend of electric vehicle industry. And as the largest market of new energy vehicles in the world, Chinese electric vehicle industry exhibits obvious impetus of government policies on the market development, and foresees a significant penetration of electric vehicles into traditional transportation sector in near future.
Research on Valve Characteristics and Economic Operation of Ultra-Supercritical Steam Turbine with Throttle Steam Distribution Mode
Authors: Lili Zhou , Jianqun Xu , Xijun Huang , Zeyu Huangfu 
Published: December 2020

Abstract
High pressure governing valve is modelled by elliptic equations, and verified through the comparison with the literature data. Then a 660MW ultra-supercritical steam turbine with throttle steam distribution mode is modelled to explore the efficiency of HP cylinder and the unit’s economic under different loads with different operation strategies. Analysis shows that the valve opening is an important factor that impacts the heat rate and the valve in 30%-40% opening should be recommended for operation. According to the requirements of grid frequency adjustment, the proposed operation strategies can improve the units’ economic performance and enhance the ability of deep peak regulation.