bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of Interactive Ludo Games on Earth and Space Science Learning Material as High School Exercise Media
Authors: Haeruman Leny Dhianti , Serevina Vina , Griselda  , Susanti Yuli Eri 
Published: July 2022

Abstract
Enrichment was specific activity given to the students who reached the minimal proficiency criteria. One of the methods that we’re able to attract student’s motivation to learn something is by combining learning and playing (edutainment). Application of media that applied edutainment to the enrichment processed can increase student’s motivation to develop their knowledge. This research was designed to know the media development process, feasibility, practicality, and the student’s response to interactive ludo game which developed as enrichment media. The method used is Research and Development (R & D) with ADDIE Model (Analysis, Design, Development, Implementation, and Evaluation). The subjects were matter expert, media specialist, and 20 students of XI grade Indonesia Maju Senior High School have obtained on earth and space sciences learning material. The data collection instruments in this research are using study papers of specialist material and media, a paper of practicality test, and student questionnaire responses. The result of the research showed validation specialist material given a score of 82,7%, a media expert validation of 80,2%, a practicality validation of 83,4%, and student’s response amounted to 85,6%. Overall obtained a score of 82,9% so it can be categorized as very worthy and excellent.
The Validity of Learning Implementation Plan of Independent Learning in Online Learning using Direct Learning Models on Thermodynamics Subject
Authors: Sunaryo  , Serevina Vina , Anjani Putri , Anggraini Dewi 
Published: July 2022

Abstract
One of the developments of online learning device needed to implement distance learning at home is to prepare a Learning Implementation Plan (RPP) for independent learning with a direct learning model to activate students. This study aims to know the validity of RPP of independent learning on Thermodynamics subjects using the direct learning model. The type of this research is research and development, which refers to the 4-D model are defines, designs, develops, and disseminates. The research instrument used in this search was a validation sheet for experts with validation tests in the form of filling out validity questionnaires then analyzed with a Likert scale. The results of the validity test in the research as a whole obtained a percentage of validity from media experts (88%), material experts (91%), and learning experts (92%) with interpretation of the Likert scale included in the criteria very feasible to use. Based on the results of research and discussion, it can be concluded that the development of RPP of independent learning on Thermodynamics subject using the direct learning model can be applied in physics learning conducted online.
The Development E-Learning Assisted by Flashcard to Improve Students Scientific Literacy in High School on the Kinetic Theory of Gases Materials
Authors: Made Astra I , Halimah Shaladsha Irma 
Published: July 2022

Abstract
Since the outbreak of the pandemic, it requires educators and students at all levels of education to be able to adapt to virtual learning. Based on the needs analysis that the researchers conducted through an online questionnaire for science class of XI students, their obstacle during distance learning was that 64% of students still had difficulty understanding physics material. Students have difficulty analyzing problems in physics problems because there are too many formulas that must be understood, as well as learning factors for students who are less effective. Most of them are interested in interactive learning methods by emphasizing audiovisual, as well as animations and learning videos. Therefore, the study aims to develop e-learning assisted by flashcards to improve the scientific literacy in high school students, because it is easily accessible on any device, can be via a laptop or smartphone. The average validation results by media experts are 89.58%, material experts are 90.65%, learning experts are 94.15% and by class XI physics teachers are 96.00%. The average value of the overall validation test by experts is 92.6% with the interpretation of “very feasible” as a learning medium with an N-Gain of 0.44 on a medium increase interpretation.
The Developing of Digital Pedagogical Curriculum of Primary Education Teachers in Indonesia
Authors: Bentri A , Hidayati A 
Published: July 2022

Abstract
Digital pedagogical competence is an ability that needs to be developed by teachers to instruct their students in the 4.0 industrial revolution era of the 21st-century. In West Sumatra, the creative capabilities of instructors are inadequate. Hence, they must be able to apply different approaches to learning. This research aims to develop the curriculum of digital pedagogical competence of primary education teachers in West Sumatra. The method of this research is research and development by using Borg n Gall Model.The results of this study, have found curriculum objectives, teaching materials or materials, learning experiences and evaluation tools used for the development of teacher digital pedagogy competencies. However, for these, it is recommended to provide structured training for the development of digital pedagogy abilities.
SIMSPEC-G: a simple code for the simulation of HPGe detectors for gamma rays up to 1 MeV
Authors: Nayak S.S. , Mukherjee G. 
Published: July 2022

Abstract
A new program called SIMSPEC-G has been developed to
simulate the interaction of gamma-rays of energies upto 1 MeV with
different materials. In this work, 3 different geometries of high
purity Ge (HPGe) detectors have been studied: single crystal HPGe,
segmented single crystal HPGe and clover geometry composed of four
HPGe crystals in clover-leaf arrangement. Contributions of different
processes to peak formation have also been examined. The simulated
spectrum, for a single crystal of clover, and for 662 keV gamma-ray
(from 137Cs source) has been compared with experimentally
obtained spectrum. The addback factor (gain in full energy peak
efficiency due to the addition of the energies of the Compton
scattered gamma rays in more than one crystal of a clover HPGe
detector) and the hit pattern for a range of gamma-ray energies from
the experiment have been excellently reproduced by the simulation
leading to its validation. The fraction of total events in which
highest or full energy is deposited in the first hit crystal is
estimated and the use of this idea to improve angular resolution of
a Clover detector has been explored.
Simulations of recoil trajectories in Dubna Gas-Filled Recoil Separator 2 by GEANT4 toolkit
Authors: Solovyev D.I. , Kovrizhnykh N.D. 
Published: July 2022

Abstract
Dubna Gas-Filled Recoil Separator (DGFRS-2) is a new
facility at the Super Heavy Element Factory which allows us to study
the properties of superheavy elements (SHEs) formed in complete
fusion reactions in the femtobarn cross-section range. High
dispersion and complex magnetic configuration make it difficult to
tune the separator and find the optimal current values in the
magnetic elements. This work presents a simulation model of the
DGFRS-2 based on a GEANT4 toolkit. The main methods of trajectory
simulations of heavy ions in gaseous media are discussed and several
new processes are implemented in GEANT4. Calculation results agreed
well with the data produced in test experiments which allows us to
use this model for transmission determination and tuning of the
separator in experiments aimed at SHE investigations.
Backlash to fossil fuel phase-outs: the case of coal mining in US presidential elections
Authors: Egli Florian , Schmid Nicolas , Schmidt Tobias S 
Published: July 2022

Abstract
Phasing out coal is a crucial lever in reaching international climate targets. However, the resulting jobs losses might trigger voter backlash, making phase-outs politically costly. Here, we present an analysis of the electoral response to coal mining job losses in US presidential elections using matched and bordering difference-in-difference estimators. Our findings confirm that fossil fuel phase-outs can result in voter backlash. In our main specification, we find a four percentage-point (pp) increase in the Republican vote share in 2012 (range across specs. = 3.6 pp–4.5 pp), declining to 3.2 pp in 2016 (range across specs. = 3.2 pp–4.2 pp), in counties suffering from coal mining job loss. The estimated electoral response is around three times as large as the number of jobs lost. We observe this response only in places where there was significant job loss, where these jobs accounted for a large share of locally available jobs and where income levels were low. Relative party strengths do not influence the results.
Sinking seaweed in the deep ocean for carbon neutrality is ahead of science and beyond the ethics
Authors: Ricart Aurora M , Krause-Jensen Dorte , Hancke Kasper , Price Nichole N , Masqué Pere , Duarte Carlos M 
Published: July 2022

Abstract
Sinking vast amounts of seaweed in the deep ocean is currently being proposed as a promising ocean carbon dioxide removal strategy as well as a natural-based solution to mitigate climate change. Still, marketable carbon offsets through large-scale seaweed sinking in the deep ocean lack documentation and could involve unintended environmental and social consequences. Managing the risks requires a number of urgent actions.
Soils, Science and Community ActioN (SoilSCAN): a citizen science tool to empower community-led land management change in East Africa
Authors: Kelly C , Wynants M , Patrick A , Taylor A , Mkilema F , Nasseri M , Lewin S , Munishi L , Mtei K , Ndakidemi P , Blake W 
Published: July 2022

Abstract
Pastoralist communities worldwide face complex challenges regarding food and feed productivity. Primary production systems are under stress, nutritional choices are changing and the relationship between development and agriculture is undergoing profound transformation. Under increasing pressure from climate and land use change, East African agro-pastoral systems are approaching a tipping point in terms of land degradation. There is an urgent need for evidence-led sustainable land management interventions to reverse degradation of natural resources that support food and water security. A key barrier, however, is a lack of high spatial resolution soil health data wherein collecting such information for each individual community is beyond their means. In this context, we tested whether bridging such data gaps could be achieved through a coordinated programme at the boundary between participation and citizen science. Key outputs included a community-led trial of a hand-held soil scanner, which highlighted a range of positive benefits and practical challenges in using this technology in this context, with identification of some potential solutions; and a targeted soil organic matter and nutrient status dataset in a small catchment-based community setting. The results show that if the practical challenges can be resolved, use of portable soil scanner technology has the potential to fill key knowledge gaps and thereby improve resilience to the threat of land degradation through locally responsive farmer and community decision-making.
Sensing the Terrestrial and Atmospheric Hydrological Dynamic using Satellite Gravimeter and GNSS
Authors: Bramanto Brian , Sarsito Dina A. , Gumilar Irwan , Kuntjoro Wedyanto 
Published: July 2022

Abstract
Geodetic observation methods, e.g., satellite gravimeter and Global Navigation Satellite System (GNSS), are mainly used for determining the Earth’s gravity field and reference system. However, many efforts have been made to adopt the mentioned methods for estimating hydrological dynamics. The satellite gravimeter of the Gravity Recovery and Climate Experiment and its Following-On missions (GRACE/GRACE-FO) have proven to capture the terrestrial hydrological variation. Also, thanks to its signal propagation through the atmosphere medium, GNSS can be used for sensing the hydrology variation in the atmosphere, i.e., troposphere medium. This study aims to explore GRACE/GRACE-FO and GNSS observations to estimate the respective terrestrial and atmospheric hydrological variation in Bandung, Indonesia. Monthly solutions of GRACE/GRACE-FO provided by three agencies were used to estimate the terrestrial hydrological variation. We also used the continuous GNSS site of ITB1 and calculated the atmospheric hydrological series in the form of precipitable water vapor. We found that the terrestrial hydrological series varies approximately ±20 cm, while the precipitable water vapor ranges between 1 to 5 centimeters. Further, we observed long-wavelength components from terrestrial and atmospheric hydrological variations that correspond to dry and wet seasons. However, we only sensed shorter wavelength components of hydrological dynamic from GNSS observation and not for the GRACE as the estimated hydrological variations were estimated monthly. At the same time, delays were calculated every two hours using GNSS observations. Nevertheless, this study shows the potential uses of geodetic approaches such as satellite gravity and GNSS observations to capture the hydrological dynamic.
Utilization of Terrestrial Laser Scanner Technology for Analyzing Shape of Dutch Cave (Bandung, West Java)
Authors: Jessy Kartini G A , Rizky A , Rafiq F A 
Published: July 2022

Abstract
Technological developments in the field of surveying and mapping remain in progress. One technology that provides precise and accurate results is the terrestrial laser scanner (TLS). This technology can generate millions of points in a short time and represent objects in 3D. TLS technology has become famous for heritage documentation purposes due to its ability to obtain detailed geometry and information from maintaining historic buildings. This research is in the Dutch Cave, Djuanda Forest Park, Bandung, West Java, to map and document 3D. To produce accurate data, frame measurements were carried out using a total station, GNSS, which ended with acquisition using TLS. The registration method used is the target-to-target method. The goal of this research is to create as-built drawings of the Dutch Cave in analyzing the Dutch Cave's form in greater detail. This investigation determined that the Dutch Cave measures 124.435 meters in length and has a height difference of 69.7 cm between the entrance and the exit. The as-built drawing of the Dutch Cave illustrates that the shape of the cave varies from entrance to exit. There is a cave chamber that widens by 18.8 cm toward the cave's center and narrows by 20.7--32 cm toward the cave's exit. The Dutch Cave has a slope of between 1 and 5 degrees. The Dutch Cave 3D data can be used for a documentation archive for the Djuanda Forest Park.
Interaction of Air and Sea above Seamount in the Halmahera Sea
Authors: Sobaruddin D P , Marpaung F. , Putra R.A.B. , Fahim A. , Dharma C.S. , Pramono D.T. , Kristiawan A. 
Published: July 2022

AbstractThe interaction of sea and air plays a very important role in the early stages of cloud formation. In certain cases, changes in temperature in the sea surface layer and the atmospheric layer closest to the sea will affect the initiation of the formation of water vapor which can become cloud. To monitor the sea-air temperature interaction above Seamount in Halmahera Sea, we took an expedition of Jala Citra-I 2021 Aurora from August 28 to September 9, 2021 using The Indonesian Navy Center for Hydrography and Oceanography research vessel, the Navy’s KRI Spica-934. Weather condition was observed using two installed Automatic Weather Stations (AWS) mounted on a vessel, radiosonde in Sorong, West Papua, and Outgoing Longwave Radiation (OLR) data from NOAA (National Oceanic and Atmospheric Administration), while the profile of sea surface temperature (SST) were observed using a 24-hour CTD measurement. Both AWS data were analyzed using two samples Kolmogorov-Smirnov test with h=1 and showed low correlations (r2= 0.2-0.4, p-value <0.01) for the parameters of temperature, relative humidity, and wind speed. The hourly SST ranged 29°C – 30°C from 0-50 meter and the Lifting Condensation Level ranged about 939 to 985 mb in the morning on 1 - 2 September. The OLR was a neutral and positive values. These conditions indicated that a strong local effect dominantly created by a strong sea-air interaction in the study area. A warm SST with a strong divergence wind leads a warm air layer developed on the sea surface to rise. A low OLR with a moderate CAPE is enough to support the updraft of water vapor, rising from sea surface and then support convective activity formed in the region. In addition, it shows that the changes activity of convective clouds, developing over warm waters, are dominant mode of diurnal variability. However, investigation of intra-seasonal variability in Halmahera Sea was not clear. Further investigation on spatiotemporal of sea-air interaction on a local scale are needed to capture the phenomena on its season.
Clastic Sediment Characteristics of Gumai Formation: Preliminary Study of Tertiary Rocks in South Sumatra Basin
Authors: Hendrizan M 
Published: July 2022

Abstract
The depositional environment of Gumai formation is still challenging to be studied. Previous studies of the depositional environment in the Gumai Formation show a debate interpretation of transition, shallow marine, and deep marine environment. The study's objectives are to identify lithology characteristics of Gumai Formation in Baturaja region and determine the potential environment of the Gumai Formation. Miocene clastic sedimentary rocks of Gumai Formation show well-preserved features in Simpang and Muara Dua, South Sumatra. The Gumai Formation discovered in the southern anticline flange, particularly in Muara Dua, composes marl with quartz veins. The opposite flange in the northern part of Simpang region indicates Gumai Formation consists of siltstone, calcareous sandstone, quartz sandstone and sand ball in siltstone layers. Based on the obtained data at Muara Dua and Simpang, the Tertiary rocks of the Gumai Formation are situated in the flange of folded Pre-Tertiary rocks at Garba complex. Gumai Formation in the research area was deposited in transition environment to shallow sea in which the formation in Simpang has shallower marine environment than Muara Dua region.
Geochemistry of Gede Volcanic Complex West Java, Indonesia, Compared to Salak Volcano as its Proximity and how The Ciletuh Mélange Complex Lineament Affected It
Authors: Winanto Erza , Abrory Achmad Nazar , Edwin Eric , Abdurrachman Mirzam 
Published: July 2022

Abstract
‘Mélange’ has been used to indicate a larger spectrum of chaotic rock bodies formed in various and different tectonic settings (rift–drift cycles, oceanic subduction, continental collision, and intracontinental deformation) by tectonic, sedimentary, and diapiric processes and their mutual interaction. Two well-known mélanges in Java Island are Ciletuh mélange in Sukabumi and another in Karangsambung, Kebumen. Previous studies suggest those mélanges are connected and indicate the Early Cretaceous Sundaland boundary elongated from Ciletuh, Karangsambung, and up until Meratus in Southeast Kalimantan. The Gede Volcanic Complex (GVC) and Salak Volcano of the Sunda island arc (West Java, Indonesia) are Quaternary volcanoes that lie geographically on the Early Cretaceous Sundaland boundary. An indication of crustal assimilation related to the Ciletuh Mélange complex has been observed by previous research. Therefore, this research intended to further investigate whether GVC and Salak are affected by that boundary through an igneous petrogenetic approach.
This research uses geochemical data (major and trace elements) proceeded by various discrimination diagrams to account for the tectonic conditions of the Gede Volcanic Complex and Salak Volcano. Products from both GVC and Salak are all sub-alkalis rocks that came from active continental plate margins. Geochemical analysis shows that one metabasalt sample from Ciletuh Mélange Complex has the same characteristics to anomalies found at GVC by being an island arc tholeiite. Meanwhile, anomalies at Salak could be explained by its location being on top of the Meratus lineament that might contain granitic deposits.
Morphometry Analysis of Sedayu Mountainous Catchment Areas from Detailed Aerial Photos
Authors: Tutur  , Army Edo Kharisma , Rohman Arif 
Published: July 2022

Abstract
Morphometric analysis is a powerful tool to understand the hydrological process quantitatively and the main requirement to determine the hydrological characteristics of a watershed. Morphometric analysis to determine the drainage characteristics of the Sedayu River Sub-watershed, Semaka District, Tanggamus Regency, Lampung Province was carried out using Digital Elevation Model (DEM) data. The primary data used is aerial photography using drones, the location of aerial photos representing watersheds of concern. The catchment area morphometrics were obtained from the extraction of the morphometric characteristics of the combined DEM data from the mountain watershed and the analysis of topographic maps by using ArcGIS software. Based on reports over a period of time, at several points in the area there are frequent river floods that overflow during heavy rains. Morphometric analysis in flood-prone areas with high rainfall is needed. The morphology of the Sedayu area has contrasting variations consisting of several gentle alluvial plains, some of which are Bukit Barisan hills with varying slope variations. The Sedayu watershed in this study is divided into 3 sub-watersheds, namely: sub-watershed A, sub-watershed B, and sub-watershed C. However, only sub-watershed A is the focus of morphometric analysis because its longest river, record flood disasters, landslide records, and has upstream to residential. Morphometric analysis was carried out on parameters such as watershed area (A), watershed length (Lb), main river length (Ln
), watershed width (W), drainage density (Dd
), bifurcation ratio (Rb
), and circularity ratio (Rc
). The results of morphometric calculations are the length of the watershed 4.82 km, the length of the main river is Sub-watershed A 8.996 km, the width of the watershed 0.686 km, and watershed area 4.861 km2 Based on these results can be calculated drainage density (Dd
) 2.719 km/km2 which means Sub-watershed A of a rough type with the inundated surface, permeable sub-soil, and resistant to erosion. Bifurcation ratio (Rb
) is 3.333 which means sub-watershed A has a rapid rise and fall in floodwater. Then, the circularity Ratio (Rc
) 0.32 which means Sub-watershed A is elongated so that the peak discharge and decrease flow quickly and causes a link with the hydrological response of rainfall-runoff. The results of this morphometric characteristic analysis are the right reference for planning strategies for soil erosion control and soil conservation.