bluuebunny/crossref_metadata_2025_split huggingface dataset:
LabVIEW-based servo valve dynamic and static test system
Authors: Ma Donghui , Xing Keli , Mei Pengwei 
Published: December 2023

Abstract
As a key component of the electro-hydraulic servo control system, the electro-hydraulic servo valve’s performance directly affects the stability of the system’s operation. Therefore, according to the company’s requirements, a servo valve testing system was designed based on LabVIEW. Firstly, the hydraulic system was designed according to the dynamic and static testing requirements of the servo valve. Then, the electrical control system and software system were designed based on PLC and LabVIEW. Finally, dynamic and static characteristic tests of the servo valve were conducted on the designed test bench. A flow-pressure dual closed-loop steady-state control method for testing the no-load flow characteristics was proposed, effectively improving the testing accuracy and meeting the company’s requirements.
Operating Performances of the Water-source Heat Pump System Coupled with PV/T Collector for Heating
Authors: Sun Jize , Zhang Yufeng , Zheng Yawen , Ai Dengxin , Li Wen , Wu Wenjun , Zhao Yuetian 
Published: December 2023

Abstract
An energy supply system that can achieve complementary usage of solar and electric energy is the PV/T collector linked water-source heat pump and electric boiler composite system. TRNSYS simulates the system in this study after each piece of equipment is given a mathematical model. The inlet and outlet water temperatures of the evaporator side and condenser side of the water-source heat pump, the inlet and outlet temperatures of the electric boiler, and the inlet and outlet water temperatures of the source side and load side of the thermal storage tank are all examined in order to determine how well the system operates. The findings demonstrate that by warming the water in the water collecting tank, PV/T performs admirably as a low-temperature heat source for the evaporator side of the water-source heat pump. The condenser side, in contrast, consistently produces hot water at 45°C. The load side of the storage tank’s outlet temperature is between 43°C and 45°C, which is sufficient to suit the users’ heating needs. The source side of the storage tank additionally receives 50°C hot water heated by the electric boiler at night.
Minor Defect Location of Power Cable Based on 2nd-order Chebyshev Self-convolution Window
Authors: Chen Bangfa , He Zilan , Liu Yijun , Hu Yupeng 
Published: December 2023

Abstract
Power cable is extremely important to the stability of the power grid. It is often difficult to determine the location of cable minor defects. Based on previous studies, this paper improves a detection method based on the reflection coefficient, which can effectively locate the minor defect. First, the distributed parameter model of cable is established, and the reflection coefficient is obtained. The 2nd-order self-convolution Chebyshev window function having good positioning effects is selected as the preprocessing function for the real part of the reflection coefficient. Then Discrete Fourier Transform is used to obtain the defect location image. The simulation results indicate that the proposed measure can locate the weak defect in the cable well and improve the positioning accuracy, which shows great application potential.
A Precise Calculation Method of Conductor Current Based on FEM
Authors: Sun Zezhong , Yue Yishi , Wang Feng , Liao Zhenyu , Tan Ben , Wang Cheng , Zhao Mian , Yang Teng 
Published: December 2023

Abstract
The demand for electricity in society is increasing. It is necessary to continuously strengthen the construction of transmission capacity. This article establishes a precise calculation method for the current carrying capacity of wires based on finite element analysis, taking into account the aluminum core diameter, steel core diameter, pitch diameter ratio, rotation angle, etc., which has higher calculation accuracy and is suitable for calculating the current carrying capacity in different meteorological environments. It is of great significance for fully tapping the power supply potential of transmission lines and improving the capacity of transmission channels.
The time resolution improvement of Cherenkov-Radiator-Window Photomultiplier tube
Authors: MA Lishuang , Chen LingYue , Huang Guorui , Hu Jun , Han Xiaorou , Hua Zhehao , Huang XianChao , Jin Muchun , Jiang Xiaoshan , Jin Zhen , Liu Shulin , Pan Weiyan , Qian Sen , Ren Ling , Si Shuguang , Sun Jianning , Wei Long , Wu Qi , Wang Tianyi , Wang Xingchao , Wang Yifang , Wang Yingjie , Wang Zhi , Wang Ning , Wu Kai , Yan Xiongbo , Ye Jingbo , Zhang Haoda , Zhang Zhiming ,   the MCP-PMT work group
Published: December 2023

Abstract
The improvement of time resolution in time-of-flight positron emission tomography (TOF-PET) relies on the development of scintillation materials and photodetectors. With the introduction of Cherenkov TOF-PET, higher requirements have been placed on the intrinsic timing performance of photodetectors. Our team has proposed a Cherenkov Radiator Window Photomultiplier tube (CRW-FPMT) that uses the Cherenkov radiator directly as the light window, which eliminates the boundary between the scintillator and the photodetector for fast time resolution. This paper mainly discusses the factors influencing its time resolution and optimizes it to achieve a single photon time resolution of 27.2 ps.
Fractional advection diffusion asymmetry equation, derivation, solution and application
Authors: Wang Wanli , Barkai Eli 
Published: December 2023

Abstract
The non-Markovian continuous-time random walk model, featuring fat-tailed waiting times and narrow distributed displacements with a non-zero mean, is a well studied model for anomalous diffusion. Using an analytical approach, we recently demonstrated how a fractional space advection diffusion asymmetry equation, usually associated with Markovian Lévy flights, describes the spreading of a packet of particles. Since we use Gaussian statistics for jump lengths though fat-tailed distribution of waiting times, the appearance of fractional space derivatives in the kinetic equation demands explanations provided in this manuscript. As applications we analyse the spreading of tracers in two dimensions, breakthrough curves investigated in the field of contamination spreading in hydrology and first passage time statistics. We present a subordination scheme valid for the case when the mean waiting time is finite and the variance diverges, which is related to Lévy statistics for the number of renewals in the process.
Spatial Patterns of Under-Resourced Neighbourhood Settlements in Sidenrengrappang Regency
Authors: Riyanti R , Wikantari R , Mahyuddin  
Published: December 2023

Abstract
Under-resourced neighbourhood settlements in Sidenreng Rappang Regency, which are growing, need to get the proper treatment, so that its scope does not expand so that it impacts the decline in the quality of the community’s living environment. The direction of development is identified as early as possible. This is seen from the spatial pattern. This study describes and explains the distribution pattern and spatial correlation of Under-resourced neighbourhood settlements in Sidenreng Rappang Regency. The spatial distribution uses the 2014 and 2020 Under-resourced neighbourhood location map overlay method with administrative maps and adds the attribute data on the percentage of Under-resourced neighbourhood Heads of Families (KK) while the spatial autocorrelation uses Moran’s Index, Moran’s scatterplot and Local Indicator Spatial Autocorrelation (LISA). The results showed that Under-resourced neighbourhood settlements in 2014 were concentrated in the city center while in 2020 they expanded to the west, north, east, and south of Sidenreng Rappang Regency. The results of the Moran Index and Moran’s Scatterplot testing show that there is no difference in the spatial distribution pattern of the percentage of Under-resourced neighbourhood households in 2014 and 2020 where there appears to be a spatial grouping (cluster). The results of the LISA analysis show that 13 villages have spatial autocorrelation. This indicates that the handling of Under-resourced neighbourhood settlements by the central and regional governments until 2019 has no impact on reducing the area and percentage of KK Under-resourced neighbourhoods, but instead grows new Under-resourced neighbourhoods and expands to other areas.
Analysis of Land Use Based on Carrying Capacity of Agricultural Land in Bantul Regency
Authors: Prasetya Yudhian Aditya , Salam Muslim , Munir Ahmad 
Published: December 2023

Abstract
Population growth requires expansion of land as a place to grow and develop. If development is not controlled, land conversion can occur for activities that are not in accordance with its function, so that it has an impact on decreasing the carrying capacity of the environment. The environmental carrying capacity of an area is an important factor that must be considered so that the development process carried out can be sustainable. This study aims to determine changes in agricultural land and land carrying capacity in Bantul Regency. The method used is to analyze land change, evaluate land use based on land class and subclass and analyze the carrying capacity of land in Bantul Regency. In formulating these recommendations, several stages were carried out in this research. Geographic analysis is carried out by optimizing Geographic Information System (GIS) applications to map land conditions including an assessment of land use changes over several years.
Analysis of Thermal Condition of Classrooms in Suburban Area During Corona Virus Desease using Adaptive Method
Authors: Mulyadi R , Hamzah B , Bangsawan N J , Kusno A , Ishak M T , Taufik Y R F , Syukri M R , Bachtiar A A F , Nurhasanah  , Duminggu P A 
Published: December 2023

Abstract
This article addresses the influence of a classroom’s thermal environment on the thermal comfort of the student when windows and vents are wide open during a pandemic, following Corona Virus Desease regulations. This research was conducted quantitatively by measuring the classrooms’ thermal environments from 08:00 to 13:00 at a suburban high school. The findings indicate that the classroom’s average air temperature (Ta) was 29.80°C, with an average relative humidity (RH) of 67.71%, an average airflow velocity (V) of 0.05m/s, an average Mean Radiant Temperature (MRT) of 29.67°C, and an average operating temperature (Top) of 29.72°C. An analysis was conducted using the web-based CBE Thermal Comfort Tool with the Adaptive Method, which can analyze the acceptance of thermal conditions based on operative temperature (Top). According to the analysis, it can be concluded that the thermal environment conditions in the morning in a “Comfortable” condition based on the ASHRAE-55 scale with the operative temperature (Top) are 27.37°C, the airflow speed (V) is 0.3m/s, and the prevailing mean outdoor temperature is 29.73°C. However, during the day, the ambient environmental conditions change, and the thermal comfort turns to “Too Warm” due to the operative temperature condition (Top), which is at the highest point of 31.46°C, with a prevailing mean outdoor temperature of 29.73°C, and an airflow speed (V) of 0.3m/s. It can be seen that the condition has not been able to meet the ASHRAE-55 standard, both in the 80% acceptability limit and the 90% acceptability limit range.
Analysis of Acid Mine Drainage Formation Potential on Coal Stratification in Lamuru Area, Bone Regency, South Sulawesi Province
Authors: Rivai U T , Ramli M , Widodo S 
Published: December 2023

Abstract
The open-pit mining system in coal mines causes the rocks at the mining site to be exposed to the surface so that water and air will react with rocks directly which will cause the formation of acid mine drainage, diverse morphological coditions with many springs and agricultural fields around the research area have an important role that must be maintained so as not to be polluted or damage agricultural land. The purpose of this study was to analyze the presence of sulfide minerals with sulfur content in coal stratification as the initial potential of acid mine drainage, in the lithology of the study area obtained seven lithological samples on coal stratification including overburden, S-01 (siltstone), S-02 (coal seam 1), S-03 (siltstone), S-04 (claystone), S-05 (coal seam 2), S-06 (sandstone) and S-07 (top soil). The results of the X-ray Diffraction (XRD) analysis detected the presence of pyrite minerals, with the results of the analysis of total sulfur ranging from 0.046 to 4.62%, and the results of the analysis of scanning electron microscope (SEM) obtained anhedral, subhedral and framboidal morphology This type of framboidal pyrite is a very fine crystal, very fast to react with air so that this pyrite is believed to be a trigger for the formation of acid mine drainage.
Analysis of Sustainable Drainage System in SMA 4 Area, Jayapura City, Papua
Authors: Riswanto Sigit , Yunianta Andung , Rochmawati Reny , Rumaropen Nimbrot 
Published: December 2023

Abstract
Flooding one of the problems that arise during the rainy season. This is very common in areas with tropical climates, where during the dry season it can be very dry and lack of water, but during the rainy season it is abundant with water and at worst a disaster can occur. Runoff and inundation a usually problem in Jayapura City, with hill topography that tends the large, resulting flood and inundation in flat and upstream areas. One the public areas is often affected by runoff or flood and innudation at the SMA 4 area of Jayapura City, where in this area is most important community activity because it is related to educational activities so attention need paid overcome the problems that occur mainly as a result of runoff. Sustainable drainage system application that prioritizes water quality and runoff water quantity management is very important to overcome the problems runoff and innudation. The result study is find a solution to runoff and iinudation. Analysis method useing Hec-Ras application for calculation discharge and channel dimensions using Sustainable Urban Drainage method which is popularly applied in various countries for water quality and runoff quantity management. The researched result are to obtain the maximum rainfall discharge value and runoff design, drainage channel dimensions, and the appropriate sustainable drainage system in SMA 4 area of Jayapura City[1].
Germination of Cotyledonary Somatic Embryos into Plantlets on Coffea arabica L. of AS2K clone
Authors: Arimarsetiowati R , Prastowo E 
Published: December 2023

Abstract
Andung Sari 2 Klon (AS2K) is an Indonesian superior clone of Arabica coffee (Coffea arabica L.). Coffee plants require two years to complete their life cycle, resulting in genetic development by conventional breeding which is a significant challenge because it takes at least twenty years to produce new varieties that are ready to be marketed. Conventional coffee propagation via shoot cutting is detrimental to the strength and resistance of C. arabica L. cutting roots. Plants lack a taproot, allowing them to collapse easily, and they are frequently attacked by nematodes during the early stages of their growth. Somatic embryogenesis (SE) propagation was possible to produce an excessive number of somatic embryos for the development of plantlets during the availability of elite clones in a field experiment. The purpose of this study was to improve the plant conversion of SE by assessing the effect of different plant growth regulators (PGRs) on plantlet regeneration in AS2K clone Arabica coffee. Cotyledonary embryos were transferred to plantlet regeneration medium, which consisted of a half-strength MS basal medium containing 1 mg/L IBA supplemented with different concentrations (1.0, 3.0, 5.0 mg/l) BAP and (0.5, 1.0, 1.5 mg/l) GA3. Plantlet regeneration was established by using combination of 3 mg/L BAP and 0.5 mg/L GA3 as well as combination of 3 mg/L BAP and 1 mg/L GA3.
Effect of Accelerators on High Early Strength Concrete (HESC) Using High Volume Fly Ash
Authors: Sunarno Y , Rangan P R , Mansyur  , Tumpu M 
Published: December 2023

Abstract
Applying large quantities of fly ash for the production of High Early Strength Concrete (HESC) is a challenge for researchers in the utilization of quality, inexpensive, and environmentally friendly materials. A high volume of fly ash in concrete, however, reduces the initial compressive strength of the concrete. For this reason, it is necessary to use admixture additives in the concrete mixture to get the expected performance. This research seeks to identify the optimal HESC mix design using fly ash 50% of the total cementitious by adding a superplasticizer and accelerator to obtain a high initial compressive strength. Three variations of HESC, namely HESC-12, HESC-14, and HESC-16, were made using a superplasticizer and accelerator with different doses. Each variation uses 12 liters of superplasticizer and different accelerator volumes: 12 liters, 14 liters, and 16 liters. Specimen testing was carried out on fresh and hard concrete. Fresh concrete was subjected to a slump test, whereas hard concrete was subjected to compressive tests at 18 hours, 24 hours, 3 days, and 28 days of age. The average slump flow values for HESC-12, HESC-14, and HESC-16 (cm) were 78, 79.5, and 80, respectively, demonstrating that all HESC samples are classified as self-compacting concrete (SCC). According to the results of density tests conducted on all specimens ranging from 2461 to 2538 kg/m3, all specimens are included in the category of normal-weight concrete. Within the range of 29.8 to 35.3 MPa for the initial compressive strength of HESC at 24 hours of age, it can be concluded that all HESC specimens fulfill the criteria for high early-strength concrete. The addition of the right type and dosage of chemical admixture is a solution to overcome the weakness of applying fly ash in high-early-strength concrete.
Weathered ultrabasic rocks in the Lapaopao, an implication for development of nickel laterite
Authors: Dermawan I , Mawaleda M , Irfan U R 
Published: December 2023

Abstract
The research conducted in the Lapaopao area focuses on analyzing the process of serpentinization in ultramafic rocks and its impact on the formation of nickel laterite. Ultrabasic rocks containing olivine and pyroxene minerals undergo hydrothermal metamorphism, resulting in the formation of serpentine minerals. The research purposed to understand effect of serpentinization process to development of nickel laterite. Various samples were taken on location to see the correlation in both the Lapaopao sub-block and Babarina sub-block. There are two (2) types of samples were taken, including fresh rock (bedrock samples) and laterite samples (limonite and saprolite material). All samples were analyzed using methods such as XRF, thin section, and XRD. Bedrock samples were analyzed using the thin section method, while laterite samples (limonite and saprolite) were analyzed using XRF and X-RD analyzing methods. The serpentinization process in the Babarina sub-block is generally medium to high level, while in the Lapaopao sub-block low to moderate level. The enrichment of nickel (Ni) in the supergene zone is dominantly influenced by Ni’s ability to replace magnesium (Mg) in weathered serpentine minerals.
The Effect of Fertigation System and kitchen waste POC on Paprika Plants
Authors: Driyunitha  , Pakiding Yulius , Kannapadang Sepsriyanti 
Published: December 2023

Abstract
The effort to increase the production of paprika plants is needed in order to supply increasing market demands. The production enhancement can be done through cultivation technology improvement that is the improvement on irrigation system and soil fertility. Fertigation system is a watering application together with fertilizer application. Whereas, the improvement of soil fertility can be done by using kitchen waste POC. The research was carried out in Pangli, Sesean District, Toraja Utara Regency, on February until June 2022. The research is a factorial experiment that is arranged in a Randomized Block Design (RBD), consisting of 8 treatment combinations and repeated 3 times. The first factor is fertigation system that consists of 2 kinds of irrigation systems, namely bulk irrigation system (F1) and drip irrigation system (F2). The second factor is kitchen waste POC that consists of 4 levels of concentration, namely 350 ml/l of water (L1), 400 ml/l of water (L2), 450 ml/l of water (L3), and 500 ml/l of water (L4). The results show that drip fertigation treatment, kitchen waste POC concentration of 450 ml / l water has a significant effect, while the combination of fertigation system treatment and kitchen waste POC concentration only has a significant effect on plant height.
Allocative Efficiency Analysis of Katokkon Chili Production in Tana Toraja and North Toraja Districts
Authors: Lande BPY , Fudjaja L , Hamid N 
Published: December 2023

Abstract
This study aims to measure the allocative efficiency of inputs or production factors in katokkon chili farming with climate-friendly organic farming. This research was conducted in five villages spread across two districts, Tana Toraja and North Toraja, South Sulawesi. This study involved 100 respondents from each village with a census sampling method. The methods used in this study are Cobb-Douglas Stochastic Frontier and allocative efficiency analysis (AEA). The results showed that of the six variables contained in the Cobb-Douglas equation, Land Area (X1), Labor (X2), Compost (X3), Liquid Organic Fertilizer (X4), Vegetable Pesticides (X5), and Farm Capital (X6), only the allocation of farm capital (X6) did not have a significant effect on the production of katokkon chili (Y) in Tana Toraja and North Toraja. Furthermore, the five variables that had a significant effect on the production of katokkon chili were again tested in allocative efficiency analysis, with results showing that the allocative use of Compost, liquid organic fertilizer, and vegetable pesticides was considered efficient or by the usage procedure with the value of NPM / Px = 1. In comparison, the other variables, land area and labor, were allocative, not optimal NPM / Px >1. Hence, increasing land by an average of 72.69 m2 and a workforce of 39.95 HOK was necessary to achieve allocative efficiency.