bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biotechnology Topics Analysis: A Preliminary Study of STEM Based-Science Practicum Book for Secondary
Authors: Putri Rahmah Evita , Diliarosta Skunda , Oktavia Rani 
Published: July 2022

Abstract
The purpose of this study is to analyse biotechnology topics for the STEM based-science practicum book. Preliminary study is need to be done before further research, especially for research and development or quasi experiment research. Biotechlogy is one popular topic from secondary school. Biotechnology constitutes a scientific study in science and technology which experiences rapid growth in recent years. The result shows that biotechology topics contain four basic elements to learn science such as fact, concept, principle and procedural. Biotechnology topic also had A1 until A5 level of affective skill and C1 until C4 level of knowledge skill and also P1 until P4 level of psychomotor skill. Every skill level on biotechlogy topic shows compability with the STEM framework. Biotechnology topics also led to a lot of integrated practicum activity especially for student in secondary school. Therefore, biotechnology topics is a compability topic for STEM Based-Science Practicum Book….
College Students’ Conceptual Understanding of Force and Motion: Research Focus on Resource Theory
Authors: Taqwa Muhammad Reyza Arief , Sulman Fauzan , Faizah Revnika 
Published: July 2022

AbstractThis is a descriptive study that aims to reveal students’ conceptual understanding of force and motion topics. In this study, we focus our review on resource theory. This research was conducted on 86 first-year physics undergraduate students. The research instrument consisted of ten reasoned multiple-choice questions that were feasible based on the criteria of validity, reliability, discriminant index, and difficulty index. The data are in the form of quantitative data and qualitative data. Quantitative were obtained from students’ conceptual understanding scores. Quantitative data were analyzed by determining descriptive statistics. Qualitative data were obtained from students’ reasons. The data were analyzed using the Miles and Huberman technique. We use this data to analyze resources that were activated by students when they answered the questions. The results of the research analysis showed that the students’ conceptual understanding was in a low category. Some resources that were activated by students were (1) no acceleration at a constant speed (in uniform circular motion case), (2) at the lowest point the tension in the rope is maximum, (3) order to win, a bigger force is needed, and (4) friction is only affected by the characteristics of the plane surface.
Interactive design of physics learning media: The role of teachers and students in a teaching innovation
Authors: Rahim Fanny Rahmatina , Sari Silvi Yulia , Sundari Putri Dwi , Aulia Fauzan , Fauza Naila 
Published: July 2022

AbstractThis paper reports how potential users are involved in the design of interactive learning media. This paper describes the responses of teachers and students about how learning media are applied in schools, a detailed description of the desired learning media and how learning media contribute to improve student learning outcomes. This research used quantitative and qualitative methods. The instruments were questionnaires and interview sheets for teachers and students. The data from research instruments of students included learning styles, responses to using learning media in the classroom, and responses to HOTS (Higher Order Thinking Skill) questions. The data from the teachers included their activities in the opening, core, and closure activity. In general, the media was expected to increase the enthusiasm and motivation of students in learning. For this reason, learning media that contains challenging questions and multimedia that attract students’ attention are developed based on media development indicators.
Validity and Practicality of Guided Discovery Learning-Based Chemistry E-Module for Class XII High School
Authors: Yerimadesi  , Wahyuni Zahra Ade , Andromeda  , Guspatni  , Pradipta Aruna , Khaira Ulfa , Mareza Amanda 
Published: July 2022

Abstract
E-module is an alternative teaching material that can be used in chemistry learning process. This study aims to analyze the validity and practicality of the chemistry e-module which is based on guided discovery learning model. This research is educational research design using Plomp development model. Research instruments were validity and practicality questionnaires. Subjects in this study were 17 validators consisting of 11 lecturers and 6 chemistry teachers and 84 practitioners consisting of 6 chemistry teachers and 78 high school students. Research data were analyzed with CVR and CVI formula, kappa moment and Aiken’s V. The result of the construct validity showed a very high category of validation (k=0.90). The result of media validity also showed a high category of validation (k=0.90). The result of content validity showed a high category of validation (CVI=0.98). The result of the practicality test showed a high practicality category, V=0.90 for teachers’ responses and V= 0.84 for students’ responses in the small group test, and V=0.81 for students’ responses in the field test. Based on these results, it can be concluded that the chemistry e-module which is based on guided discovery learning model is highly valid and practical for chemistry learning in senior high schools.
Validity and reliability to instruments of student’s initial competence for development of physics learning games integrated with scientific literacy
Authors: Afrizon R , Hidayati  , Novitri L 
Published: July 2022

Abstract
Use of monotonous physics learning media makes online learning methods considered less effective in the 4.0 revolution era. Physics learning games developed must be in accordance with the needs and demand 4.0 revolution. Therefore, it is necessary to analyze the initial conditions of high school students in the city of Padang with one of the instruments being the initial competency instrument. The purpose of this study was to determine the validity and reliability of students’ initial competence instruments for the development of physics learning games containing scientific literacy. This type of research is descriptive research. Samples were taken using volunteer sampling technique. The number of instruments being tested is 35 items/questions. The instrument trial has been carried out in class X SMA Negeri 8 Padang with 44 students. The instrument trials were analyzed using SPSS and excel applications. From the results of the analysis that has been carried out, there are 16 valid and reliable questions, and 4 questions have been revised. Thus, some of the students’ initial competency instruments for the development of physics learning games containing scientific literacy are valid and moderate reliable so that they can be used to determine students’ initial competencies.
Compact LumiCal prototype tests for future e+e− colliders
Authors: Ghenescu V. 
Published: July 2022

Abstract
The FCAL collaboration is preparing large-scale prototypes of special calorimeters to be used in the very forward region at future electron-positron colliders for instant luminosity measurement and a precise measurement of integrated luminosity and for assisting beam-tuning. LumiCal is designed as silicon-tungsten sandwich calorimeter with very thin sensor planes to keep the Molière radius small, thus facilitating the measurement of electron showers in the presence of background. Dedicated FE electronics has been developed to match the timing and dynamic range requirements. A partially instrumented prototype was investigated in a 1 to 5 GeV electron beam at the DESY II synchrotron. In the recent beam tests, a multi-plane compact prototype equipped with thin detector planes fully assembled with readout electronics were installed in 1 mm gaps between tungsten plates of one radiation length thickness. High statistics data were used to perform sensor alignment, and to measure the longitudinal and transversal shower development.
A Panda fiber temperature sensor up to 900°C
Authors: Hokkanen A. , Salmi A. , Vashistha V. , Nyman M , Nielsen S.K. , Jensen T. , Jessen M. , Wälchli B. , Kapulainen M. , Naulin V. , Tala T. , Aalto T. 
Published: July 2022

Abstract
The use of Panda-type polarization-maintaining (PM) fiber
for the localized sensing of high temperatures was analyzed with
simulations and experiments up to 900°C. Accuracy and
repeatability of the results started to decline above
800°C. Fused silica optical fiber melts at 1700°C,
which sets an ultimate limit for measurable temperatures. In
practice, optical fiber birefringence restricts the maximum
temperature to 1060°C where PM fiber loses its ability to
maintain polarization. Three sensor fibers (4, 5 and 10 cm long)
were spliced at 45° angles to input/output fibers and
calibrated in an oven from room temperature to 850–900°C
temperature range. Two superluminescent light-emitting diodes
(SLEDs) were coupled together as a broadband light
source. Birefringence-induced change of the polarization in the
sensor fiber was measured with a polarization splitter and an
optical spectrum analyzer (OSA) as a function of the
wavelength. Temperature-dependent birefringence generates a
sinusoidal reflection spectrum from the input polarization mode to
the orthogonal output polarization mode. Temperature changes could
be concluded from variations in these spectra. Finally, a small
fusion device, NORTH, at DTU, Denmark was successfully used as a
testbed to make sure that the sensors can handle transportation and
the instrumentation required for vacuum operation and still produce
sensible data from a harsh environment.
Microbulk Micromegas in non-flammable mixtures of argon and neon at high pressure
Authors: Iguaz F.J. , Dafni T. , Canellas C. , Castel J.F. , Cebrián S. , Garza J.G. , Irastorza I.G. , Luzón G. , Mirallas H. , Ruiz-Chóliz E. 
Published: July 2022

Abstract
We report on a systematic characterization of microbulk
Micromegas readouts in high-pressure Ar+1%iC4H10 and
Ne+2%iC4H10 mixtures. Experimental data on gain, electron
transmission and energy resolution are presented for a wide range of
drift and amplification voltages and pressures from 1 bar to
10 bar for the argon mixture and from 5 bar to 10 bar in the neon
mixture, in steps of 1 bar. Maximum gains higher than
1.7 × 103 (1.7 × 104) in the argon (neon) mixture are
measured for all pressures, without the significant decrease with
pressure typically observed in other amplification structures. A
competitive energy resolution at 22.1 keV, but with a slight
degradation with pressure, is observed: from 10.8% at 1 bar to
15.6% FWHM at 10 bar in Ar+1%iC4H10 and from 8.3% at
5 bar to 15.0% FWHM at 10 bar in Ne+2%iC4H10. The
experimental setup, procedure and the results will be presented and
discussed in detail. The work is motivated by the TREX-DM
experiment, that is operating in the Laboratorio Subterráneo de
Canfranc with the mentioned mixtures, although the results may be of
interest for other applications of time projection chambers at high
pressures.
Quantum conditional probabilities
Authors: Pérez Ignacio , Luis Alfredo 
Published: July 2022

Abstract
We investigate the consistency of conditional quantum probabilities. This is whether there is compatibility between the Kolmogorov–Bayes conditional probabilities and the Born rule. We show that they are not compatible in the sense that there are situations where there is no legitimate density matrix that may reproduce the conditional statistics of the other observable via the Born rule. This is to say that the Gleason theorem does not apply to conditional probabilities. Moreover, we show that when this occurs the joint statistics is nonclassical. We show that conditional probabilities are not equivalent to state reduction, so these results do not affect the validity of the Lüders expression.
Discontinuous percolation transitions in cluster merging processes
Authors: Cho Y S , Kahng B 
Published: July 2022

Abstract
The cluster merging process was regarded as the central kinetics of a sol–gel transition and was solved analytically by Ziff. Since then, it has been applied to diverse phenomena, such as the evolution of social networks and spread of epidemic diseases. The sol–gel transition is applied to the robustness of complex networks with regard to the percolation transition. Percolation transition is regarded as a robust continuous transition; however, in complex systems, diseases or rumors can spread rapidly. Hence, it has been challenging to modify percolation models such that they exhibit a discontinuous transition that explains abruptly changing phenomena. Recently, researchers argued that a discontinuous percolation transition can occur when a network evolves under a rule with global information. In this study, we review earlier studies on percolation models that exhibit discontinuous transitions, focusing particularly on models with cluster-merging kinetics.
Spatiotemporal Change of Chl-a Concentration in Jakarta Bay using Sentinel-2 Multispectral Imageries
Authors: Indriyaningtyas S , Setiawan F , Lubis R F , Bakti H , Widyatmanti W 
Published: July 2022

Abstract
Jakarta Bay is the estuary of 13 rivers that flows through Jakarta Metropolitan areas. Consequently, nutrients and pollutants accumulate in Jakarta Bay and lead to eutrophication. Therefore, monitoring the water quality of Jakarta Bay is essential to support integrated river coastal management. Chlorophyll a (Chl-a) concentration is one of the essential parameters in describing water environment conditions. For large and dynamic areas, Chl-a concentration distribution monitoring requires multi-temporal remote sensing data. This study examines remote sensing data and methods combined with on-site measurement to get more accurate and effective Chl-a spatiotemporal analysis approaches. We estimate Chl-a concentration of Jakarta Bay during 2016-2021 using selected Sentinel-2A and Sentinel-2B images. We conducted an atmospheric correction using a C2RCC (Case 2 Regional Coast Colour) processor and obtained Chl-a concentration from the embedded Neural Network model. The results showed that the model could retrieve Chl-a concentration with an R2 of 0.79 and the root mean square error of 31.75 mg/m3. Time-series results reveal an increase of maximum Chl-a concentration during 2016-2021. Our remotely sensed estimation results well-captured the change of temporal and spatial of Chl- a concentration in the Jakarta Bay. It provides the public and policymakers valuable information to support integrated river coastal sustainable management of Jakarta Metropolitan
Registration Strategy of Handheld Scanner (HS) and Terrestrial Laser Scanner Integration for Building Utility Mapping
Authors: Widyastuti Ratri , Saptari Asep Yusup , Rahman Arif 
Published: July 2022

Abstract
Currently, the need for a 3D model that represents the existing condition of a building is needed, especially for building management. While performed the 3D mapping of building utilities such as pipelines in buildings, the Terrestrial Laser Scanner (TLS) technology couldn’t cover the object in the ceiling, so Handheld Scanner (HS) was used to complete the scanned objects. The purpose of this article is conducting the process of mapping between HS and TLS for building pipelines. The integration between two different sensor resolutions and sensor scan coverage requires a separate strategy to generate 3D models for pipeline objects in building. The use of specific target and 3D transformation method could do the registration between two set of point clouds which was obtained by two different technologies. The target object, such as spherical object which is usually used as a tie point between scan results in the registration process, cannot be recorded by HS. The specific targets were pasted on the pipelines in order to be captured by the HS. The specific targets become tie point in the registration process. Meanwhile, the registration process using the Iterative Closest Point (ICP) algorithm cannot be carried out because the two scan results do not meet the overlap percentage standard, so that the 3D transformation would be used in registration process. The result is that the registration accuracy is 0.062 m.
Estimation of B-Value Variation as Earthquake Precursor in Java Region with Maximum Likelihood Method
Authors: Arubi D , Zulfakriza  , Rosalia S , Sahara D P , Puspito N T 
Published: July 2022

Abstract
Java Island is one of the areas with a population density of 1,171 people/km2, which is relatively high compared to other regions in Indonesia. The tectonic setting of the Java region is affected by the interaction of tectonic plate subduction between the Indo-Australian Plate and the Eurasian Plate which moves at the rate of 67 mm/year. In addition, the presence of several active faults on Java Island also contributes to the tectonic setting. The implication of this setting is a relatively high level of potential earthquake events and some of them are destructive earthquakes. The estimation of b-value variations by using Gutenberg-Richter Equation plays an important role in estimating the occurrence of earthquakes. The aims of this study are to determine the role of spatial and temporal variations of b-value as earthquake precursors on Java Island. In this research, earthquakes analysis was carried out in the form of spatial and temporal variations of b-value from earthquake catalog data in 1900-2016 for the Java Island region. Based on the estimation of earthquake recurrence time for magnitude 6.5, 7, and 7.5, and also the analysis of spatial variation of b-value shows the areas with the potential for significant earthquakes in the west and eastern part of Java region. In addition, our result also obtains the existence of a seismic gap zone in the southern part of Central Java.
Assessing the optimal location for Sipora wave energy power generator site placement from a geological perspective
Authors: Pertala A W , Suherman I H , Kesumajana A H P , Kurnio H 
Published: July 2022

Abstract
One of the potential sources of renewable energy in the Mentawai region is ocean wave energy. The western Sumatra sea has a wave energy potential of up to 20 kW/m. The wave energy potential modeling conducted by the Marine Geological Institute (P3GL) ESDM revealed that western Mentawai waters are locations that produce annual average wave energy of around 20 kW/m. The geological survey of the seabed for power generating wave energy turbine sites using acoustic equipment including the Echosounder Odec, SBP Stratabox, and Star Fish Side Scan Sonar. The mapping of the seabed allows for the identification of undersea morphology, slopes, structural elements, and seafloor objects. Ocean depth sounding and bottom surface imaging are used in this research to determine the placement of the turbine site from the wave energy generator connection grid. The existence of underwater corals and fluvial plain units, continental shelf with shallow seabed and a gentle slope with an average depth of 30 meters was recognized as the most important factor in determining the site's location in this research. Based on the weighting and scoring results, optimal locations for potential power plant sites are in coastal areas located in offshore near Batu putih coast.
Estimation of Size, Volume and Weight of Oranges Using Digital Images Processing
Authors: Ifmalinda  , Putri R E , Rasinta I 
Published: July 2022

Abstract
Lima Puluh Kota Regency is one of the largest orange producing areas in West Sumatra. The common method for calculating the volume of fruit can be done manually with the water displacement method using a measuring cup filled with water then the fruit is put into, so the amount of spilled water is called an overflow which is equal to the volume of the fruit. This identification method will cause the quality of the fruit to be damaged due to immersion in the water (3). To overcome the shortcomings of this method, it is necessary to have a technology like digital image processing that is able to determine the volume and mass of fruit objectively without damaging the quality of the fruit. Digital image processing is an optical data recording system in the form of photos, analog in the form of video signals such as images on a television monitor which are directly stored on a magnetic tape. The purpose of this research is to estimate the weight and volume of orange using digital image processing technology. In this study, the oranges used were 3 levels of quality standard. The results obtained in this research are manual weight validation and weights using digital images with the coefficient of determination R2 = 0.9705, manual volume validation and volume using digital images obtained R2 = 0.9792. This shows that the program designed can estimate the volume and weight of oranges accurately.
Effects of solar photovoltaic installation on microclimate and soil properties in UiTM 50MWac Solar Park, Malaysia
Authors: Noor N F M , Reeza A A 
Published: July 2022

Abstract
Combining solar photovoltaic panels with agricultural crops on the same land were recently proposed as to maximise land use. However, most researchers were based on temperate climate whereas studies in the tropics have yet to be initiated. Thus, this study investigates the microclimate properties and soil properties for potential agricultural crops to be planted. We monitored photosynthesis active radiation (PAR), light intensity (LI), air humidity (RH), air temperature (AT), and wind speed (WS) in outskirt panels, under panels and row between panels at three different locations: highest point area, moderately sloped area and lowest point area. We also sampled the soil for analyses of chemical and physical properties. We found that PAR, LI, and WS remained low beneath the panels at all locations. Interestingly, no significant difference was detected in AT at different treatments. The accumulation of organic matter, moisture content, and soil bulk densities showed similarities between different treatments irrespective of locations. Soil infertility is reflected by low pH, CEC, exchangeable bases, available phosphorus. Besides, the result showed almost no amount of carbon, sulphur and nitrogen was found. This research might be the starting point of a potential agrivoltaic system in Malaysia that will benefit both farmers and engineers.
Response Analysis of Rice Products on Various Conditions of Water Availability for Development of Optimal Water Sawing Irrigation
Authors: Yanti D , Berd I , Naspendra Z 
Published: July 2022

Abstract
Farm systems with stagnant water require adequate water sources, because water is one of the most influential basic factors. Meanwhile, the availability of water decreased, while the level of water consumption increased. Water-saving irrigation solves the problem of water in rice cultivation. This study aims to determine the response of rice yields with the application of water-saving irrigation. The experiment was carried out with 5 treatments of water availability in the field: less than 50% of available water, 50%-60% of available water, 60%-70% of available water, 70%-80% of available water, and saturated). Each treatment was tested three times and the parameter observed was the productivity of rice plants. As a result, statistical analysis stated that there was no difference in rice productivity between all treatments of water availability in the field, with a significance value of 0.600, which is > 0.05. The highest productivity of rice plants is 6.44 tons/ha, namely the availability of water on the land at 70% and 80% available water. There is no difference in the value of rice productivity in saturated conditions with the application of water-saving irrigation, proving that the availability of water in the land in conditions of less than 100% available water has no effect on rice crop production.