bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on the structure of offshore wind and solar hybrid power generation device under the background of green energy
Authors: Wang Hansheng , Yang Yanbin , Zhang Shujun 
Published: December 2023

Abstract
There are sufficient solar and wind energy in the sea, which can be used as a good power generation energy and obtain great energy value. Therefore, the development of offshore green energy has become the mainstream trend. This paper mainly focuses on the study of offshore wind solar energy generation structures. This paper first introduces the principle of wind power generation and photovoltaic power generation and the existence of a large amount of energy offshore, and then leads to the basic structure of wind-solar hybrid power generation structure. Then it further studies the power generation, wind load, wave load, initial stability and economic type. Finally, the advantages and future environmental benefits of the structure are summarized, and the structure is reformed reasonably. The results show that the structure has good stability, load bearing capacity and economy, and the construction difficulty of the improved structure has been reduced.
Field-oriented control drive circuit design
Authors: Li Junfu 
Published: December 2023

Abstract
Field-oriented control drive circuits, as a new type of control method recently, are different from the traditional control principle of electronic speed controllers and have gradually started to be used in large numbers in recent years. The correct design of the circuit and the implementation of the algorithm to realize precise control of the brushless motor is a question worth investigating. The research purpose of this paper is to design a field-oriented drive circuit to drive a brushless motor with the smallest possible size and the largest possible load to improve performance and usability. Based on the current design of the field-oriented control drive circuits, the author has selected the right microprogrammed control Unit and algorithm to improve the practicality and performance of the field-oriented control drive circuits. Finally, a few advantages of this field-oriented control drive circuits are summarized. The conclusion of this research is that the brushless motor can be controlled precisely by a simple operation. However, the cost is that the algorithm design is more complicated.
An overview of principles and types of ADC and DAC
Authors: He Jiale , Tian Xingchen , Wei Hansen , Tian Yingbo , He Bingxun 
Published: December 2023

Abstract
In modern society, electronic devices such as computers have facilitated the resolution of numerous problems. However, these devices can only process digital signals, while the signals in the natural are predominantly analog. Consequently, Analog-to-Digital Converters (ADCs) and Digital-to-Analog Converters (DACs) have become important circuits that are widely employed in various fields such as industry, communication, healthcare, and energy. The research and development of ADCs and DACs have been recognized as significant research directions in the field of electronic engineering. This paper aims to delve into the fundamental principles, classifications, and applications of ADCs and DACs, providing valuable references and guidance for electronic engineers.
Research on the safety and practicability of the combination of offshore wind and solar energy
Authors: Xu Yuhe 
Published: December 2023

Abstract
Wind power is a renewable way of power generation. It features simple scale construction, considerable efficiency and clean and pollution-free. The current situation of offshore wind power generation is also facing many challenges, safety, economy, feasibility. In this paper, the design method is adopted and the structure is checked and analyzed, and the current problems and solutions of offshore wind power generation are analyzed from the perspectives of structural safety, cost estimation and design feasibility. Through practical design and calculation, this study makes a breakthrough in the structure of offshore floating wind power generation, and provides a solution for the spar structure to limit the sea state.
Monte Carlo simulation with Wolff algorithm for scaling behavior of two dimensional XY model with KT phase transition
Authors: Song Yuntai 
Published: December 2023

Abstract
The property of XY model with its KT phase transition has been discussed in many aspects such as specific heat and magnetic susceptibility along with correlation function. Also, this is one of the original models for topological phase transition which gives a new type of phase transition without symmetry breaking. Since the calculation of these properties above can be achieved by Monte Carlo Method with Wolff algorithm, the visualization of vortex and antivortex is also an interesting task which is accomplished in this article. By successfully modeling the system and getting the step-by-step configuration, the relation between the generation of vortex and the variation of temperature can be concluded in a qualitative way. The calculation of spin correlation function shows the phase transition between disorder and quasi long-range order which represents the topological phase transition. As a reliable method, the Monte Carlo method with Wolff algorithm can be a choice of generating the training set for neural network which can calculated much more sophisticated case in a relatively short time and the transition between classical simulation and quantum simulation can be approached as mentioned in the end of this article.
Analysis of Verilog-based improvements to the memory transfer
Authors: Jia Yicheng , Sun Yibo , Wang Yige 
Published: December 2023

Abstract
Memory copy technology is widely used for data transfer between CPU and memory, and is an important step in all types of operating systems and drivers, and is one of the bottlenecks in the current speed-up of computing. This paper has done more research on the historical development, theoretical basis and experimental details of different memory copy accelerators and related knowledge, and summarised and compared them, with emphasis on reviewing two related papers that provide an overview of their acceleration theory and experiments. The paper concludes that memory copy accelerators using a variety of innovative technologies have largely improved copy speeds and reduced energy consumption, laying a solid foundation for the future development of memory copy acceleration technology, which has been successful in improving and enhancing the user experience with the performance gains of this technology. At the same time, the development of memory copy accelerators has advanced more advanced technologies, such as machine learning, to power the development of human technology.
The iron melting point determination by 2D simulation
Authors: Yi Shan 
Published: December 2023

Abstract
In the past research, molecular simulation has been widely used to simulate various properties of materials and understand atomic theory. The effect of the material’s surface tension and different closed-packed structures can also be successfully simulated by using the Lennard-Jones potential. However, the two-dimensional simulation of the iron’s melting point has not been studied deeply. Thus, by MATLAB, this project used the Lennard-Jones potential and 2D simulation to simulate the melting point of the iron (698.82 K-725.08 K) under certain pressure. This pair coefficient equation of the iron atom from 300K to 900K was found successfully. The pair coefficient equation is generally in line with expectations, but the calculated melting point is far away from the experimental result (1811 K). This is mainly because of the limitation of 2D simulation. (the vertical force is not contained) The advice for the future study is to use the 3D simulation to do the more accurate iron’s melting point calculation.
Wireless power transfer technologies for electric vehicles: Principles, challenges and opportunities
Authors: Bai Siqi 
Published: December 2023

Abstract
Wireless power transfer (WPT) technology is a promising solution for charging electric vehicles, which have many advantages such as zero emissions, low noise, and convenience. This paper reviews the current state-of-the-art of WPT technology for electric vehicles, focusing on the classification, principle, advantages, and disadvantages of different WPT methods, such as capacitive WPT, inductive WPT, microwave WPT, and laser WPT. The paper also discusses the future trends and challenges of WPT technology, such as coil design, international standards, safety issues, multiple charging modes, and compensation networks. The paper aims to provide a comprehensive overview of WPT technology for electric vehicles and to inspire further research and development in this field.
Improvement of ECG amplifier for wearable devices
Authors: Li Yizhou 
Published: December 2023

Abstract
The amplifier occupies half of the volume of the entire ECG amplifier circuit, so the design of the amplifier becomes the key to the design of the ECG sensor in wearable devices. This article will provide some ideas for improving the amplifier circuit to achieve higher accuracy, lower power consumption, and smaller ECG modules. The author compares the advantages of different circuits and the performance of different components by means of comparison. Some ideas for improving ECG amplifying circuit are obtained. The amplifier occupies half of the volume of the entire ECG amplifier circuit, so the design of the amplifier becomes the key to the design of the ECG sensor in wearable devices. This article will provide some ideas for improving the amplifier circuit to achieve higher accuracy, lower power consumption, and smaller ECG modules. The author compares the advantages of different circuits and the performance of different components by means of comparison. Some ideas of improving ECG amplifying circuit are obtained, and some methods of improving ECG amplifying circuit by differential amplifying circuit, changing circuit components and adding filter structure are summarized.
Removal of volatile organic compounds and odorous compounds for multilayer packaging recyclates using heated air purging
Authors: Saini Pragti , Bhati Sampat Singh , Dutt Dharm 
Published: December 2023

Abstract
Multilayer packaging (MLP) is made from Polyethylene terephthalate (PET), Polyethylene (PE), Polypropylene (PP), Ethylene vinyl alcohol (EVOH), Polyvinyl chloride (PVC), and tie layer materials. MLPs are either burned or dumped in landfills after their use, which causes many hazards to humans and the environment. MLPs are recycled in recycling facilities and converted into pellets to reuse them. However, the MLPs are strongly contaminated by volatile organic compounds and odorous compounds, which prevents their use in high-end applications, i.e., cosmetics, packaging, etc. In the research work, a remediation strategy is proposed to reduce VOCs and odorous compounds from MLP recyclates using heated air oven treatments, which are also easily scalable to pilot and industrial scales. VOCs and odor are reduced significantly without compromising the product’s mechanical, thermal, and other properties.
Preparation of microfluidic chips by electroplating and used for microdroplet study
Authors: Zhang Zhengtao , He Rongxiang 
Published: December 2023

Abstract
Microfluidic chips have been widely used in chemical industry and biological monitoring. The application of microfluidic chips in biological analysis, chemical synthesis, clinical detection and other fields not only makes the chemical reaction system small and highly integrated, but also reduces the sample consumption. At present, the traditional microchannel machining methods, such as laser etching and injection molding, have many disadvantages such as complicated process, high technical requirements, high cost and long cycle. In this paper, a new method of microstructure and microchannel in microfluidic chips based on electroplating technology is proposed based on traditional methods, and the microdroplet experiment was carried out.
Rural-to-urban reclassification and its impact on urbanization in Indonesia: a case study of West Java Province
Authors: Katherina L K 
Published: December 2023

Abstract
Rural-urban reclassification is a process in which rural areas evolve into urban areas, leading to significant changes in population, economy, and infrastructure. This process is a component of urbanization. Generally, urbanization studies focus on major cities and their surrounding areas as rural regions transform into urban ones. Meanwhile, according to the latest reclassification data, the conversion of rural areas into urban ones has also occurred in locations distant from existing city centers, thus creating new urban areas. This article’s objective is to analyze the pattern of rural-to-urban reclassification in West Java, focusing on the gradual shift of localities from rural to urban. The study employs descriptive analysis of statistical data related to rural-urban transformation, population size, and growth. The study reveals that the rural-urban transformation in West Java is multifaceted and dynamic, encompassing challenges and opportunities. The study’s findings underscore the need for effective policies and strategies to manage the urbanization process and address the challenges related to rural-urban transformation.
Analysis of carbondioxide (CO2) sequestration capacity in Berambai Cave, Samarinda, East Kalimantan, Indonesia
Authors: Balfas M D , Rahmawati D , Rindawati P I , Saputra R E 
Published: December 2023

Abstract
Climate change is a result of global warming triggered by human activities, especially those related to the use of fossil fuels and land use change. These activities increasingly produce gases in the atmosphere, especially carbon dioxide (CO2), which causes the Earth’s temperature to rise. As CO2 continues to increase in the atmosphere, CCS (Carbon Capture and Storage) can be one of the solutions to store carbon dioxide in the long term on the earth’s surface. Karst ecosystems consisting of limestone and dolomite are one of the potential carbon stores. The purpose of this study is to estimate the carbon dioxide sequestration capacity of Berambai Cave as an effort to reduce carbon dioxide emissions in Samarinda. Administratively, this research location is in Berambai Village, North Samarinda District, East Kalimantan Province. The existence of the Pulau Balang Formation which has limestone successions in the study area has undergone a karstification process. Karstification is a natural process that can store carbon dioxide through chemical reactions. To determine the carbon dioxide sequestration capacity of Berambai Cave, the alkalinity titration method was carried out using underground rivers and secondary data analysis from BMKG Samarinda. Berambai Village has an annual rainfall of 2,705 mm/year and an average temperature of 27.48°C. Evapotranspiration is 1,383.14 mm/year and runoff are 13.21 dm. The CaCO3 concentration in Berambai spring is 140 mg/L. The carbon dioxide sequestration capacity of Berambai Cave is 73.97 m3/year/km2 contributing to reducing atmospheric carbon emissions, especially in the Samarinda area.
Study on peak hours, ventilation, and resident activities towards indoor air quality on PM2.5 in Surabaya
Authors: Syafei A D , Kurnianto N P 
Published: December 2023

Abstract
Several parameters contribute to the standard level of indoor air quality (IAQ), such as PM2.5 concentration, which is the primary parameter in this study. Several variables influence IAQ, such as infiltration and resident activities of outside air pollution through ventilation. Peak-hour traffic congestion can significantly raise outdoor air pollution. This study was aimed at finding out more about the influence of peak hours, the relationship between ventilation, resident activities, and indoor air quality (IAQ) in houses near the main road, as well as suggestions for improving IAQ. AirVisual Pro was the tool used to record PM2.5 concentration, temperature, and humidity; Kestrel 5500 was used to assess wind direction; and questionnaires were completed by residents. SPSS software is utilized for data analysis including the Pearson correlation coefficient, multicollinearity, autocorrelation, and multiple linear regression (MLR). The average indoor and outdoor PM2.5 concentrations in all units during peak and non-peak hours meet the quality standards on weekday and weekend. According to the correlation analysis, indoor and outdoor PM2.5 concentrations had no significant correlation regardless of whether the window is open or closed. Temperature (-1.473), humidity (-0.033), the number of furniture (3.660), fan usage (-8.005), cooking activities (3.755), cleaning activities (14.940), smoking behavior (4.545), and peak hours (6.896) associated with PM2.5 concentration, according to the MLR analysis. Increase fan use, no smoking inside the house, and less furniture are advised to improve IAQ.
Gallery well application as a media for water treatment in flooded areas (case study: Morowudi Village, Gresik Regency)
Authors: Pungut  , Febrianti A N , Tribhuwaneswari A B 
Published: December 2023

Abstract
High-intensity rainwater is known to cause flooding in Morowudi Village, Gresik Regency. This is a major issue for the local community because flood-related to water quality degradation renders it unfit. This study aims to apply gallery wells made as an alternative media to treat floodwater with better-quality water in Morowudi Village, Gresik Regency. In this research, there are two media variations: silica sand or building sand with a diameter of 0.2–0.4 mm applied in the form of a reactor with a diameter of 0.8 meters and a media thickness of 60 cm, which used a separation technique. The separation technique mechanism of the gallery well is SSF (Slow Sand Filtration). The floodwater percolates slowly through a gallery well reactor, with the influent water penetrating from the outside reactor and congregating in the wall as the effluent. The effectiveness of artificial gallery well application is measured by the reduction percentage of TDS, total turbidity, and total coliform. The results showed that artificial gallery well application reduces of TDS, total turbidity, and total coliform in floodwater at Morowudi Village. Thus, it can be used as usable water for the local community.
Modeling of construction and demolition waste management based on the project life cycle in Indonesia
Authors: Susilowati F , Adhipradana A Y , Prakoso J A 
Published: December 2023

Abstract
Improper management of construction and demolition waste has massively accumulated waste and has raised concerns over its impact on the environment and natural resources. The aims of this research modeled construction waste management based on the project life cycle, starting from design, procurement, storage, and implementation. The study aims to conduct a more in-depth study related to Construction and Demolition Waste (CDW) management to find the right strategy. The research method was used by identifying variables based on the review literature and compiling questionnaires for 80 construction projects in Indonesia that were randomly selected to be modeled with Partial Least Squares (PLS) tools. Based on specific criteria, existing models and indicators were evaluated against reflective outer models in explanatory research. The final model explains that construction waste has 24 indicators, namely, four at the design stage, eight at the procurement stage, four at the storage stage, and eight at the implementation stage. Based on the initial contextual analysis, the design factors are the main factor causing the waste. However, the final model explains that the construction waste contextually only relates to the implementation stage, but the design and storage stages directly affect the implementation stage. Therefore, strategies in waste management must be carried out, starting with the right design and material storage processes that are by standards to minimize waste at the time of implementation.
Evaluation of solid waste management effectiveness in Indonesia from 2019-2021: a geographic information system analysis
Authors: Gutama H , Iresha F M 
Published: December 2023

Abstract
As a developing country, Indonesia has a significant requirement for solid waste infrastructure development and the establishment of a clean, environmentally friendly, and effective solid waste management system. In other hand, poor solid waste management data remains a major challenge for identifying investment needs in each region. Sistem Informasi Pengelolaan Sampah Nasional (SIPSN) or National Solid Waste Management Information System is a comprehensive source of waste management data in Indonesia that was initiated by the Ministry of Environment and Forestry of the Republic of Indonesia to describe existing conditions of solid waste management in Indonesia. This study used the Geographic Information System approach to evaluate waste management data from 2019 to 2021. The importance indicators are the solid waste generation, the effectiveness of waste management, the types of solid waste, and solid waste management facilities in various regions of Indonesia. The primary goal of this study is to comprehend the trend of existing state of waste management, as well as to collect and evaluate data from SIPSN and study literature on solid waste management performance in Indonesia. The findings show various areas that require infrastructure development and the deployment of adequate investment technology solutions in solid waste management. This analysis helps Indonesia for having sustainable waste management by reducing waste generation, improving recycling, and lowering environmental impact.
SAHAJA: Development of a Cloud-Based WebGIS-Multi Criteria Decision Analysis for Agri-aquacultural Site Suitability in Central Java
Authors: Mulyadi M. , Prihanantya Akram S. , Faizal Akhmad , Saputri Yofita I. 
Published: December 2023

Abstract
Central Java Province, Indonesia, is endowed with vast agri-aquacultural potential. However, harnessing the full benefits of spatially enabled technology for supporting integrated sustainable agriculture and covering wide areas remains a challenge. This research aims to bridge this gap by developing a cloud-based WebGIS platform “SAHAJA” which integrates Multi-Criteria Decision Analysis (MCDA) for assessing agricultural site suitability. The study utilizes the Google Earth Engine incorporating agricultural parameters such as SAVI, soil properties, rainfall, topography, and Land Surface Temperature as well as aquacultural parameters such as chlorophyl-a, Total Suspended Soil, and Sea Surface Temperature. The platform provides users with the option to select predefined values for assessing site suitability for various purposes such as sugarcane cultivation, tea plantation, and marine fishing. Additionally, it offers an intuitive chart, allowing users to gain valuable insights from the data. The developed WebGIS serves as a decision support tool for both communities and stakeholders involved in land use planning, agri-aquacultural investment, and sustainable practices, thereby supporting smart city initiatives. The urgency of this research stems from the significant agri-aquacultural potential in Central Java and the need to effectively utilize spatially enabled technology to enhance integrated and sustainable agri-aquaculture. By addressing the challenge of wide area coverage, this study contributes to advancing the adoption of spatial technology in agricultural decision-making processes, fostering the productivity and resilience of Central Java’s agri-aquacultural sector.