bluuebunny/crossref_metadata_2025_split huggingface dataset:
Measurement of 190Pt alpha decay modes with gamma emission using a novel approach with an ultra-low-background high purity germanium detector
Authors: Nagorny S. , Laubenstein M. , Nisi S. 
Published: March 2021

Abstract
A new measurement of 190Pt alpha decay modes to the first and second excited level of 186Os has been done at the Gran Sasso Underground Laboratory (LNGS, Italy). With a new experimental set-up a total exposure of 23.107 kg d has been accumulated. The novel approach to detect rare decays made it possible to measure the half-life for the alpha decay into the first excited state of 190Pt with the highest precision to date as T1/2 = 2.59 ± 0.04 (stat.) ± 0.24 (syst.) × 1014 a, in which systematic uncertainties dominate. The search for the alpha decay into the second excited state of 186Os resulted in a lower limit of 2.8 × 1016 a (90% C.L.), which is nonetheless an improvement of one order of magnitude compared to existing results.
Rapid fabrication of gelatin-based scaffolds with prevascularized channels for organ regeneration
Authors: Hu Qingxi , Tang Haihu , Yao Yuan , Liu Suihong , Zhang Haiguang , Ramalingam Murugan 
Published: March 2021

Abstract
One of the biggest hindrances in tissue engineering in recent decades has been the complexity of the prevascularized channels of the engineered scaffold, which was still lower than that of human tissues. Another relative difficulty was the lack of precision molding capability, which restricted the clinical applications of the huge engineered scaffold. In this study, a promising approach was proposed to prepare hydrogel scaffold with prevascularized channels by liquid bath printing, in which chitosan/β-sodium glycerophosphate served as the ink hydrogel, and gelation/nanoscale bacterial cellulose acted as the supporting hydrogel. Here, the ink hydrogel was printed by a versatile nozzle and embedded in the supporting hydrogel. The ink hydrogel transformed into liquid effluent at low temperature after the cross-linking of gelatin by microbial transglutaminase (mTG). No residual template was seen on the channel surface after template removal. This preparation had a high degree of freedom in the geometry of the channel, which was demonstrated by making various prevascularized channels including circular, branched, and tree-shaped networks. The molding accuracy of the channel was assessed by studying the roundness of the cross section of the molded hollow channel, and the effect of the mechanical properties by adding bacterial cellulose to the supporting hydrogel was analyzed. Human umbilical vein endothelial cells were injected into the aforementioned channels which formed a confluent and homogeneous distribution on the surface of the channels. Altogether, these results showed that this approach can construct hydrogel scaffolds with complex and accurate molding prevascularized channels, and hs great potential to resolve the urgent vascularization issue of bulk tissue-engineering scaffold.
Reduction in human activity can enhance the urban heat island: insights from the COVID-19 lockdown
Authors: Chakraborty TC , Sarangi Chandan , Lee Xuhui 
Published: March 2021

Abstract
The COVID-19 lockdowns drastically reduced human activity, emulating a controlled experiment on human–land–atmosphere coupling. Here, using a fusion of satellite and reanalysis products, we examine this coupling through changes in the surface energy budget during the lockdown (1 April to 15 May 2020) in the Indo-Gangetic Basin, one of the world’s most populated and polluted regions. During the lockdown, the reduction (>10%) in columnar air pollution compared to a five year baseline, expected to increase incoming solar radiation, was counteracted by a ∼30% enhancement in cloud cover, causing little change in available energy at the surface. More importantly, the delay in winter crop harvesting during the lockdown increased surface vegetation cover, causing almost half the regional cooling via evapotranspiration. Since this cooling was higher for rural areas, the daytime surface urban heat island (SUHI) intensity increased (by 0.20–0.41 K) during a period of reduced human activity. Our study provides strong observational evidence of the influence of agricultural activity on rural climate in this region and its indirect impact on the SUHI intensity.
A long-term intelligent operation and management model of cascade hydropower stations based on chance constrained programming under multi-market coupling
Authors: Lu Jia , Li Gang , Cheng Chuntian , Liu Benxi 
Published: March 2021

Abstract
Under the medium- and long-term electric markets, cascaded hydropower stations face a series of practical challenges due to the uncertainty of inflow and market price. For long-term dispatch scheduling, the allocation of power generation in multimarkets is critical, including clean energy priority consumption market, inter provincial market and intra provincial market in order to maximize the operator’s expected revenue and reduce the market operation risks. Based on the hydro-dominant electricity market structure and settlement rules, we propose a long-term optimal operation method for cascade hydropower stations considering the uncertainty of multiple variables. First, a seasonal autoregressive integrated moving average model is used to handle the time-varying and seasonal characteristics of inflow series by using a copula connect function to fit the joint distribution of the monthly inflow, the clearing price of the intra provincial market and the delivery volume of the inter provincial market. Then, uncertain chance-constrained programming is established. Finally, a developed particle swarm optimization algorithm embedded in a Monte Carlo simulation is solved for hydropower operation policies, and the maximum revenue, resource allocation and scheduling strategy are obtained under the corresponding risk tolerance. Taking the actual data of cascaded hydropower stations in Yunnan Province, China, as an example, a simulation analysis is carried out. The results show that the proposed method can reasonably describe the uncertainty and correlation between the variables, realizing the optimal allocation of resources among multimarkets, and provide references for the long-term optimal operation of cascade hydropower stations in a multimarket environment. The results also show that the decision strategies should be determined considering the decision-maker’s risk preference.
Potentials of continuous Markov processes and random perturbations
Authors: Yang Ying-Jen , Cheng Yu-Chen 
Published: March 2021

Abstract
With a scalar potential and a bivector potential, the vector field associated with the drift of a diffusion is decomposed into a generalized gradient field, a field perpendicular to the gradient, and a divergence-free field. We give such decomposition a probabilistic interpretation by introducing cycle velocity from a bivectorial formalism of nonequilibrium thermodynamics. New understandings on the mean rates of thermodynamic quantities are presented. Deterministic dynamical system is further proven to admit a generalized gradient form with the emerged potential as the Lyapunov function by the method of random perturbations.
An overview of depositional environment between the mountains of southern java and the fold mountain of north java
Authors: Negara L P , Lestari D , Kurnianto F A , Ikhsan F A , Apriyanto B , Nurdin E A 
Published: March 2021

Abstract
This study aims to analyze the landform of South Java mountainous and folded mountains in northern Java based on the depositional environment context. The method used in this study is a survey. The research locations for the mountains of southern Java include Kebumen, Gunungkidul , and Wonosari regions. The research location in the northern mountains of Java includes the regions of Sragen and Grobogan. The results showed a difference in depositional environment between the two landforms. The southern Java mountains are formed in continental depositional environments, while the northern Java mountains are formed in the transition depositional environment and shallow marine depositional environment.
Mapping geomorphological environments of bendo watershed ijen mountain, banyuwangi east of java
Authors: Bachri S , Sumarmi  , Irawan L Y , Fathoni M N 
Published: March 2021

Abstract
Geomorphology is a comprehensive landscape study that reviews a space from the aspects of morphology, chronology, arrangements and processes. Accompanied by observation and field validation, the rapid development of remote sensing technology greatly helped the geomorphological mapping process. This research is aimed at geomorphological mapping of the Bendo Watershed area which can then be used as a basis for various spatial studies. The hybrid approach and on screen image interpretation (OSII) method on DEM data, optical satellites, and lithology units was carried out to obtain morphological, morphochronological and morphoarrangement information, while morphoprocess information was obtained through field observations. Sixteen units of landforms have been successfully mapped consisting of the origin of volcanic and fluvial processes with upstream morphological characteristics in the form of slopes of the Ijen Complex and downstream in the form of fluvial plains. Overall surface material is a product of volcanoes in the upstream area with a process of erosion and dominant landslides. Mapped landform units can be a unit of analysis and basic information for regional planning studies, land evaluation, and disaster.
Ecological value of soil organic matter (mandala customary forests with awiq-awiq management)
Authors: Mutia T , Sumarmi  , Bachri S , Subhani A 
Published: March 2021

Abstract
The current ecological value has become a global trend that can be used as a reference in conservation. Soil is one of the parameters of the ecological value that stores organic matter (SOM) consists of organic elements C, N, P, and K contributing to the biogeochemical cycle. The purpose of this study is to determine the ecological value of soil organic matter in Mandala customary forests that is managed by using awiq-awiq. Data on soil organic matter content was carried out in the customary forests of Mandala, Bayan, West Nusa Tenggara, Indonesia. Soil samples taken at five points based on the height of 310-350 masl. Measurements were carried out directly and indirectly, using soil physical and chemical laboratory tests. Lab test results were then analysed using a cost-based approach to determine their ecological value. The results showed ecological values based on C, N, P and K (SOM) content of land contributed around 5609.74 USD / ha or 78,990,748, 9 IDR / ha and 5830.82 USD / ha or 82,103,776.4 IDR / ha. This value is an award given to Mandala customary forests in protecting SOM to maintain a biogeochemical cycle in forest ecosystems. However, it’s protection requires sustainable forest management.
Travel time efficiency for students to school in bandung regency
Authors: Badriyah O , Ruhimat M , Setiawan I 
Published: March 2021

Abstract
School selection is currently one of the considerations for parents and students in the use of time. Moreover, the determination of the current school associated with the zoning system organized both from elementary to high school that allows school to consider 80% of students who come from the nearby location. Essentially in determining the school is able to streamline, time and mileage for students, but the factors in efficiency was influenced by many things and was out of school by location determination.The purpose of this study was to determine the existence of SMP current location to the efficiency of travel time to get to school students. The research was conducted in Bandung regency, West Java Province. The population consists of the population in this region is the school and the student population. Samples region, using random sampling and selected 31 schools. As for determining the sample of respondents using stratified sampling technique with this type of sampling disproposional. The method used is descriptive quantitative. Collecting data using a questionnaire. The results showed that the overall time taken students can said to be efficient because the data shows that the travel time spent by students to go to school fairly evenly.
Development of Municipal Settlement with The Application of The Ecovillage Concept
Authors: Wibawa W 
Published: March 2021

Abstract
Slum settlement is one of the problems that can arise in a city / district. The village of Bojongsoang, Bandung Regency, is one of the regions facing the problem of slum growth. The factors that caused the slum of settlements in Bojongsoang Village were due to excessive activity, which caused the residential environment to be unhealthy and uncomfortable to live in. With this problem the community took the initiative to conduct the ecovillage program as a solution to overcome the problem. The formulation of the problem used is “How to apply the concept of ecovillage in Bandung Regency?". The ecovillage concept is a settlement arrangement concept that uses sustainable principles by prioritizing environmental aspects and integrating social, economic and cultural dimensions. To improve the quality of slums into a growing settlement. The research method, which is used is a qualitative research method with a literature study approach, comparative study, and object observation. The analysis in this study was carried out by comparing the results of object observations with literature studies. The results achieved in this study prove that to regulate slum areas can be done by means of rejuvenation of settlements, so that it is expected to produce sustainable and ecological settlements.
Impact of infrastructure development jalur jalan lintas selatan (jjls) in Yogyakarta to change in land price
Authors: Edy H , Baiquni M , Triatmodjo B 
Published: March 2021

Abstract
The Southern Trans-Java Route (Jalur Jalan Lintas Selatan – JJLS) infrastructure development is a national program that goes through five provinces in the island of Java, namely the provinces of East Java, Central Java, Yogyakarta Special Region, West Java, and Banten. In Yogyakarta, the Southern Trans-Java Route (JJLS) cuts across three regencies, which are Gunungkidul Regency, Bantul Regency, and Kulonprogo Regency. This research selected locations in Jetis Village, Saptosari District, Gunungkidul Regency, Gadingsari Village, Sanden District, Bantul Regency, and Sindutan Village, Temon District, Kulonprogro Regency for its study. The aims of this research are to analyze price changes that occur. The research method employed in this study is the qualitative descriptive analysis method. The villages set as study locations were determined by purposive method and data collection was conducted through in-depth interviews with informants who understand the issues relevant to the research objectives. Based on the acquired study results, the highest change in land price took place in Sindutan Village. A significant increase in land price occurred.
Waste collecting point as the school of the waste management system
Authors: Ridha M , Rohmat D , Kastolani W 
Published: March 2021

Abstract
Waste collecting point is a communal waste management system with systematic sorting of waste at the source recommended by the Banda Aceh City Government to be applied to schools, namely the State Middle School 1 in Banda Aceh City. This study aims to determine the implementation of waste collecting points in an effort to overcome the problem of waste in schools. The method used in this study is the study of interviews, observations, research results, technical guidelines, journals, books, and government documents by analyzing data in a qualitative descriptive manner. The waste collecting point system is expected to be a system that will continue to be tested and developed through expert validation and limited testing. This system is useful for providing recommendations to schools in efforts to manage waste. Based on the results of the study that the implementation of waste collecting points as a waste management system has been running effectively but there are still several problems, namely the allocation of funds for the provision of facilities and infrastructure, garbage transport schedules, transportation officer errors, and lack of socialization by the city government.
Socio-economics and environmental impact of supit urang landfills capacity
Authors: Deffinika I , Rifdah Ananda B , Khairunnisa BA 
Published: March 2021

Abstract
This research aims to identify Supit Urang landfill’s impact towards Socioeconomic of the surrounding resident. Primary data collected by making a sample framework was determined by limiting the area within a radius of 1 Km from landfills. The number of samples in this research is 30 respondents, stratified in a range of 200 m. The Result shows that Supit Urang Landfill’s existence brings some environmental degradation, such as air, water pollution, excess of methane and avalanche. 37% of the study population experienced ARI as a former adaptation towards landfills existences, while 63% of them did not seek treatment. Clean water for consumption and sanitation of the surrounding population comes from wells. The presence of waste also produces methane that can be used as a household fuel.
Waste management at the UPI campus and campus citizen behaviour towards the management of zero waste
Authors: Setiawan I , Rohmat D 
Published: March 2021

Abstract
Campus should be the ideal model for the community in environmental management, especially in waste management and the behavior of campus residents. This role needs to be assessed in order to be able to achieve the zero-waste target. This study aims to review the conditions of waste and waste management on the UPI campus and the behavior of the campus residents as a study material towards UPI’s zero waste campus. The research method uses a survey method. Data collection techniques using observation, questionnaires and interviews. The results showed that waste management at UPI has not led to zero waste-oriented waste management. Availability of human facilities and resources still needs to be improved because the volume of waste exceeds the available facilities. The results also showed the behavior of UPI campus residents who were already quite good in disposing of garbages.
Feasibility study of microbial organic waste processing business in Sukasari district, Bandung city
Authors: Kastolani W , Darsiharjo  , Setiawan I , Supriatna U 
Published: March 2021

Abstract
Modern waste management systems must be carried out comprehensively and provide economic benefits. Many business opportunities for processing inorganic waste have been carried out such as recycling paper and plastic, while conventional organic waste is made into organic fertilizer / compost. The demand for organic fertilizer / compost is increasing along with the development of organic agriculture. This research was conducted to analyze the business opportunities of microbial organic waste which is a breakthrough in making compost fertilizer. The location of the study was conducted in Sukasari District Bandung City with the method used was descriptive method with SWOT analysis. SWOT analysis is used to analyze strengths, weaknesses, opportunities and obstacles in processing organic waste so that direction or recommendations are obtained. The stages are by analyzing IFE (Internal Factor Evaluation) and EFE (External Factor Evaluation) and strategy analysis using the SWOT matrix. Based on the results of the IFE calculation get a score of 3.25 and the EFE score gets 3.10. Strategy analysis based on the SWOT matrix includes the importance of increasing the quality and quantity of production, recruitment of workers, addition of land area and marketing using information technology.
Geography teachers perception toward spatial thinking teaching and learning
Authors: Dewi R P , Hermawan R , Fajariyah R A A 
Published: March 2021

Abstract
Spatial thinking can be thought through geography however to teach spatial thinking, geography teachers need appropriate knowledge and perception. The aim of this research was to know geography teacher perception about teaching spatial thinking through geography that viewed by gender. The geography teacher was a senior high school teacher with the consideration that spatial thinking has a deep connection with Geographic Information System (GIS) where GIS is given as geography subject materials to senior high school students. The data collection use a questionnaire to find out geography teachers perception about spatial thinking. The filled questionnaire then scored and analyzed using descriptive quantitative. The result showed that there was no significant correlation between gender and disposition to spatial thinking teaching and learning.
The effect of TPACK framework on inquiry process: a study of geographic subject
Authors: Yani A , Ruhimat M , Mulyadi A 
Published: March 2021

Abstract
The inquiry process constitutes one of the essential process in the learning process. Learners gain knowledge through the inquiry process to build knowledge of the information received. Teachers remains searching for the most effective learning strategy, so that students are motivated for the inquiry process. This study discusses the use the Technological Pedagogical Content Knowledge (TPACK) in the Geography learning process in high schools. The method is a quasi-experiment in the Geography learning process which was designed based on the TPACK framework to determine its effect on the inquiry process of students. The result shows that Geography learning process using TPACK framework affects the inquiry process as seen by the quality of questions raised by students. Based on the result, it can be concluded that student-involved learning process provides many opportunities for students to conduct inquiry process.
Develop Critical Spatial Thinking by Utilizing Local Landscapes: Geography Field Laboratory Studies
Authors: As’ari R , Maryani E , Rohmat D , Nandi  
Published: March 2021

Abstract
Geographical skills that need to be shared by each geographic are three categories, including map skills, field skills, and satellite image interpretation skills. To achieve field skills competency, a location is needed to be used as material for practicum studies for each subject. The Geography Education Field Laboratory can be studied in depth based on an analysis of the level of learning needs. The basis of the lab location requirements as a laboratory is seen from the laboratory function as an area to carry out careful and accurate testing and measurement of the phenomenon under study. Local landscape can be used as a field laboratory to improve critical spatial thinking skills. The study was carried out through the identification of local landscapes by delineating the area through the utilization of satellite imagery and identifying potential from each area that was chosen descriptively. Location characteristics to be used as locations for geography learning resources can describe geographical concepts, local landscapes, and regional phenomena.