bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of the Implementation of Laboratory Activities in High School Physics Learning from the Perceptions of Teachers and Principals
Authors: Linda Resma , Putra Amali , Desnita  , Afrizon Renol 
Published: October 2023

Abstract
The laboratory is the main means of learning contextual physics. The results of observations in high schools of Padang Pariaman Regency, West Sumatra, showed that the implementation of laboratory activities in learning physics was still low. An analysis was conducted to highlight the implementation of these laboratory activities in high school physics learning in terms of teachers’ and principals’ perceptions. Aspects that can be disclosed are a) the implementation of laboratory activities in terms of; availability of infrastructure and perceptions of teachers and school principals on laboratory activities, and b) the relationship between teachers’ and principals’ perceptions of laboratory activities in physical education. Sampling was done using the Cluster Random Sampling technique. The data obtained were described using the percent technique. The results of data analysis and processing concluded that a) in terms of the availability of facilities and infrastructure for the implementation of laboratory activities, the average was in the very low category (17.86%), b) The perception of teachers and principals on laboratory activities in physical learning was on average the same for the lower criteria (43.00%) and 45.20%); and c) data on the relationship between the perceptions of teachers and principals on laboratory activities is in a very strong (0.816) and strong (0.788) relationship with their respective contributions of 66.60% and 62.10%. In general, this analysis concludes that a very low percentage The implementation of laboratory activities is largely influenced by the low perception of teachers and principals’ perceptions of the role of laboratory activities in learning physics.
Improving science learning competence through advance organizer model innovation based on authentic and real worlds activities for elementary school student
Authors: Hidayati Abna , Bentri Alwen , Arina Novra 
Published: October 2023

Abstract
The implementation of science learning in elementary schools is generally still carried out conventionally, which is still teacher-centered and rarely makes students active. Students are rarely involved with authentic activities so that learning is less meaningful. The research question is whether there is an effect of the advance organizer model based on authentic and real world activities on the science learning outcomes of elementary school students This study uses a quantitative method in the form of a Quasy Experiment. The Subject is 20 students in grade IV of elementary school student. The research was conducted by testing one class with a pretest and posttest design. The results showed that there was a significant difference between learning outcomes before using the advance organizer model with multimedia assistance and after using the model. This is because the application of advance organizers with multimedia provides real experiences to students, one of which is by conducting direct experiments. Learning with advance organizers with real world activities can provide meaningful learning experiences for students.
STEM integrated electronic student worksheet to promote conceptual understanding and literacy skills of students
Authors: Asrizal Asrizal , Dier Mutiara , Mardian Vivi , Festiyed Festiyed 
Published: October 2023

Abstract
The development of the Industrial Revolution 4.0 era requires students to have good literacy skills. The preliminary investigations at Senior High School 9 Padang showed that students’ literacy skills were still relatively low. This study investigated the effect of STEM integrated electronic student worksheet (STEM integrated ESW) to promote students’ conceptual understanding and literacy skills. We employed quasi-experimental research with a post-test-only design. A sample consist of 71 students was taken using the cluster random sampling technique. The post-test items and the literacy performance assessment sheet were used as data collection instruments. Data were analyzed using a comparison test of the two means of independent groups. The research revealed that the test on the conceptual understanding aspect obtained a t-test of 5.817. Aspects of data literacy skills obtained z test -6.085. In the aspect of technological literacy skills, the t-test value was obtained at 8.596. The analysis of students’ conceptual understanding and literacy skills showed that the experimental class average was superior to the control class. Thus, STEM integrated ESW has given significantly effects on students’ conceptual understanding and literacy skills. It is hoped that further researchers can develop similar products with different topics to optimize students’ literacy skills.
Development of The Online Assessment Instrument for Fluid, Temperature, and Heat to measure the problem solving skills of high school students
Authors: Agnezi Laura Aliyah , Festiyed  
Published: October 2023

Abstract
Assessing learning is very important. During a pandemic an assessment could not be made directly. Therefore, the development of online-based assessment is still very much needed. In assessing learning, test instruments are needed. The test instrument serves to reveal a fact into data, so that if the instrument used in the study has good quality and is reliable or commonly called valid. Online assessment instruments can be made in various platforms and can be filled with questions that have been developed. This study aims to produce an online assessment instrument for fluid, temperature, and heat materials to measure the problem solving skills of high school students that are valid and reliable. The research conducted is included in the type of research and development (research and development) using the ADDIE design. The subjects of the scale trial were 60 students of class XI IPA. Expert validation data were collected by questionnaire. The trial data were collected by means of essay tests and questionnaires. Determination of the value of expert validity using the Aiken’s V formula. The empirical validity of the instrument was measured using the product moment correlation formula. Instrument reliability was measured using the Cronbach Alpha formula. The results showed that online assessment instruments on fluid, temperature, and heat materials to determine the level of problem solving skills of high school students were included in the valid and reliable categories.
The Practicality of the Physics Module Based on the PjBL Model with a Portfolio Assessment to Improve Students’ Critical Thinking Skills
Authors: Dewi Wahyuni Satria , Safitri Ginanti , Mairizwan  
Published: October 2023

Abstract
21st Century Learning demands that students can think critically, communicate, and have scientific literacy. Efforts made by the Indonesian government to meet these demands are to perfect the 2013 curriculum, which focuses on 4C skills and HOTS students. There are several obstacles in the learning process at school, namely the lack of students’ critical thinking skills in solving problems. The lack of students’ critical thinking skills is because few learning materials are available to help students develop their critical thinking abilities. Learning models haven’t focused on teaching students how to think critically. This project’s goal is to create a physics module using the PjBL model with portfolio assessment to enhance practical critical thinking abilities. The type of research is descriptive research using the Plomp model. The development method in this study is limited to the one-to-one evaluation stage, which is in the development stage, functions to see the practicality of the modules made. The practicality test was carried out after the self-evaluation and expert review stages were previously carried out. Three students in class XI MIPA and two physics professors from class XI at SMA N 8 Mandau participated in the one-on-one practicality test. The data collection instrument was the practicality test sheet. Based on data, the product practicality by the teacher is 94.08% (efficient) and by students 88.9% (efficient). Therefore, it can be concluded that Physics modules are practical, attractive, and efficient learning and benefit teachers and students. This module can be utilized as a learning tool to aid students in honing their critical thinking skills while learning physics, as required by the 2013 curriculum.
The development of STEM integrated scientific inquiry model for promoting grade 9 students’ creative thinking skill and scientific mind in electricity
Authors: Kerdsub Sumonta , Pimvichai Jirutthitikan 
Published: October 2023

Abstract
Although Scientific Inquiry (SI) takes a long root as a pedagogical method of teaching science, it does not explicitly emphasize engineering design process and STEM (Science, Technology, Engineering and Mathematics) education. This study aimed to construct a new pedagogical model called STEM Integrated with Scientific Inquiry (STEM-SI) model. This study employed a two-loop Research and Development (R&D). In R&D loop 1, the researchers employed a documentary research with the documents directly related to STEM and SI. Content analysis was used to analyze contents in such documents. The finding yielded that the STEM-SI model was developed and consisted of nine teaching steps: 1) Reviewing, 2) Engaging, 3) Exploring, 4) Designing, 5) Solving, 6) Evaluating and improving, 7) Sharing, 8) Expanding and 9) Applying. These teaching steps were utilized to develop the lesson plans in the Electricity topic for grade 9 students. In R&D loop 2, the research design was a one group pre-test post-test design. The sample was 40 grade 9 students came from Cluster Random Sampling. Two research instruments used were the Creative Thinking Skill Test and the Scientific Mind Questionnaire. The students’ creative thinking skill and the scientific mind were tested with the 70% criteria by using one sample t-test. The results expressed that the STEM-SI model could promote grade 9 students’ creative thinking skill and the scientific mind higher than the set criteria at the .05 statistical significance level. At final, the results from R2 were used to further develop the STEM-SI model and its associated lesson plans.
Acid-Base Learning Outcomes to be Improved Through a Guided Discovery-Based Content Learning System
Authors: Ma’firah Marla , Lubis Amalia Putri , Zainul Rahadian 
Published: October 2023

Abstract
The purpose of this study is to assess the reliability, applicability, and efficacy of the Guided Discovery-Based Content Learning System. Analysis, design, development, implementation, and evaluation are the five steps of the ADDIE research model, which is the research methodology that was applied. Only steps 1 through 4 have been completed in this study. In order to determine efficacy, the data was gathered using questionnaires, validation sheets, practicality sheets, and pre-test post-test sets. This content-learning system has received 85% validation from three chemical education lecturers at Padang State University and three chemistry instructors from high schools, indicating that the method is valid. Three teachers and one class of 40 students participated in the practicality test. The practicality test result was 84%, indicating that the learning system was extremely useful. The N-Gain score, which displays an average of 79% with intermediate quality, provides evidence of the usefulness of the content learning system in enhancing student learning outcomes. Therefore, it can be said that this content learning system is successful in improving student learning outcomes.
Searches for lepton-flavour violating decays of the Higgs boson into eτ and μτ in √(s) = 13 TeV pp collisions with the ATLAS detector
Authors: Gómez Delegido Antonio Jesús ,   the ATLAS collaboration
Published: October 2023

Abstract
Direct searches for lepton-flavour-violating decays of the Higgs boson into eτ and μτ final states with the ATLAS detector at the LHC with Run-2 data are presented. Both leptonically and hadronically decaying τ-leptons are included and two different background estimation techniques are employed: a MC-template method, based on data-corrected simulation samples, and a data-driven method, based on exploiting the symmetry between electrons and muons in the Standard Model backgrounds. Observed (Expected) upper limits are set on the branching ratios at 95 % confidence level, ℬ(H → eτ)<0.20 % (0.12 %) and ℬ(H → μτ)<0.18% (0.09 %), and a best-fit branching ratio difference, ℬ(H → μτ) - ℬ(H → eτ), of 0.25 ± 0.10 % is found in the channel where the τ-lepton decays to leptons, compatible with a value of zero within 2.5 σ.
Ultrahigh resolution real-time trajectory imaging of neutron induced particles in a scintillator from lithium-6 plate
Authors: Yamamoto Seiichi , Yoshino Masao , Nakanishi Kohei , Kamada Kei , Yoshikawa Akira , Kataoka Jun 
Published: October 2023

Abstract
It is known that a lithium-6 (6Li) absorbs a neutron
and is divided into a triton and an alpha particle. However, the
trajectories of the produced tritons have not yet been imaged in
real time and high resolution. We developed an ultrahigh-resolution
imaging system that can clearly observe the trajectories of neutron
induced particles in real time. The developed system is based on a
magnifying unit and a cooled electron multiplying charge-coupled
device (EM-CCD) camera combined with a 6Li plate and a Ce-doped
Gd3Al2Ga3O12(GAGG) scintillator plate. Neutrons
from a californium-252 (252Cf) source were irradiated to the
6Li plate, which produced tritons and alpha particles. The
produced tritons or alpha particles entered the GAGG plate and
produced scintillation light along the trajectories. The
scintillation trajectories were magnified by the unit, light
intensified, and imaged by the EM-CCD camera. Using our system, we
could measure the elongated trajectory images of the particles in
real time. Most of these trajectories had Bragg peak like shapes in
the images. The average range was 15 μm and the width was
4.6 μm FWHM. From the ranges we estimated, we found that
these trajectories could be attributed to the induced
tritons. Consequently, the developed real time imaging system is
promising for research on the ultrahigh resolution imaging of
neutron produced particles.
Benefit-cost ratios of carbon dioxide removal strategies
Authors: Cael B B , Goodwin P , Pearce C R , Stainforth D 
Published: October 2023

Abstract
All pathways to achieving the Paris Agreement target of limiting global warming to 1.5 ∘C or 2 ∘C require the large-scale removal of carbon dioxide (CO2) from the atmosphere. Many CO2 removal (CDR) strategies have been proposed, which vary widely in both price per ton of CO2 removed and storage timescale of this removed CO2, as well as mechanism, maturity, scalability, and other factors. However, it has not yet been thoroughly assessed whether the benefits, in terms of climate change-related damages avoided, of CDR deployment exceeds their cost at current reported prices and storage timescales, or what cost is required for CDR strategies with a given storage timescale to provide net benefits and how these depend on socioeconomic assumptions. For CDR strategies that have long storage (

>

500 year) timescales, these questions reduce to whether its price is lower than the social cost of carbon, but here we show for CDR strategies that operate over shorter timescales they also depend on the duration of storage. We demonstrate that for CDR strategies with reported storage timescales of decades to centuries, the benefits of their deployment outweigh their reported costs under middle-of-the-road socioeconomic assumptions, and in some cases their benefits still outweigh their costs under optimistic socioeconomic assumptions. Overall, the benefit-cost ratios of the evaluated CDR strategies vary by more than an order of magnitude, and are strongly influenced by both price and storage timescale. Our results provide a framework that can be used to assess and compare different CDR strategies quantitatively to help guide future research, development, and policy efforts.
Offshore wind power around the Iberian Peninsula: variability, complementarity and added value for the power system
Authors: López-Franca Noelia , Gaertner Miguel Ángel , Gutiérrez Claudia , Gallardo Clemente , Sánchez Enrique , Molina María Ofelia , Ortega María 
Published: October 2023

Abstract
The advances in floating offshore wind energy are opening deep sea areas, like the coastal waters of Iberian Peninsula (IP), for the installation of wind farms. The integration of this new energy source in a semi-closed power system with an already high share of variable renewable energies would be facilitated if the potential contribution of offshore wind energy shows reduced variability and limited seasonal variations, as the power demand in IP shows two maxima in winter and summer. The aims of this study are the analysis of temporal variability and spatial complementarity of the potential installation sites, and the identification of an optimal combination of installation areas that minimizes the temporal variability of the aggregated offshore contribution. In order to better capture the marked mesoscale features of winds around the IP, wind data from a very high resolution reanalysis (COSMO-REA6) are used. The analysis considers allowed areas for installation, delimited by the maritime spatial planning. Northern coast areas are characterized by high capacity factors (CFs) and high seasonality, while the lower CFs at the western and southern coasts are compensated by a limited seasonality. Pairwise correlation between the potential areas shows outstanding results, with several negative correlation values within a synoptic scale region, in contrast to other mid-latitude regions like the North Sea or the Eastern USA coast. An optimal aggregation of areas includes at least one area at each of the four main Iberian coasts. A strong reduction of hourly variability is obtained through the resulting combinations, and the seasonality of the aggregated CF is clearly below the values for other offshore areas. Therefore, offshore wind energy can indeed offer an added value for the Iberian power system beyond the high resource amount, reducing the need for storage or backup plants.
Comments on trace anomaly matching
Authors: Schwimmer Adam , Theisen Stefan 
Published: October 2023

Abstract
The structure of type A and B trace anomalies is reanalyzed in terms of the universal behavior of dimension −2 invariant amplitudes. Based on it a general argument for trace anomaly matching between the unbroken and broken phases of a CFT is given. The structure of moduli trace anomalies and their transformations under source reparametrizations is discussed in detail.
Analysis of Soil Deformation Due to Oil and Gas Exploration and Hydrocarbons Micro Seepage in Ngasem District, Bojonegoro Regency
Authors: Sadewa Wiguna H , Hayati N 
Published: October 2023

Abstract

Land subsidence is the result of the extraction of liquid in the pores of the rock from the compression of the sediment. The decrease occurred due to the exploitation of oil and gas wells in the area which took and caused reduced sediment compression. Aside from the result of excessive extraction of hydrocarbons, hydrocarbon micro seepage can also trigger an anomaly in the ground level. This anomaly is due to the abundance of hydrocarbons in the reservoir and the dynamic nature of oil and gas accumulation, which results in the absence of a perfect rock seal. This study aims to determine the average rate of subsidence in Ngasem District and to analyze the relationship between soil deformation and oil and gas exploration activities and hydrocarbon micro seepage. The method used in this research is InSAR Time Series with LiCSAR Sentinel 1 SLC and Generic data. Atmospheric Correction Online Service (GACOS) which was used from 2014 to. Meanwhile, maps of the distribution of hydrobarone micro seeps were obtained from Exxon Mobil and Exploration Wells for the East Java Basin were obtained from the Ministry of Energy and Mineral Resources. The results showed that the deformation of the land surface in the Ngasem sub-district was very diverse due to the presence of geological structures, exploration wells and potential seepage of micro-hydrocarbons. From the results of deformation processing in the Ngasem District area, it has the highest rising speed in the study area at 77mm/year while for the greatest decrease at -85 mm/year. Exxon Mobill’s exploration wells experienced a subsidence of -30mm/year, while the potential for micro-hydrocarbon seepage increased by 60mm/year. From the results of the analysis of the decline that occurred in exploration wells due to oil and gas exploitation.
Comparing Gardner-Knopoff, Gruenthal, and Uhrhammer Earthquake Declustering Methods in Aceh, Indonesia
Authors: Juellyan  , Setiawan Bambang , Hasan Muttaqin , Yunita Halida , Sungkar Munira , Saidi Taufiq 
Published: October 2023

Abstract
The sudden release of energy from inside the earth, which generates seismic waves, causes earthquakes on the earth’s surface. Foreshock, mainshock, and aftershock are terms commonly used in this subject. These phrases refer to the three stages of an earthquake event—before the main event, the primary event, and after the main event. The earthquake data catalogue, however, typically does not distinguish between mainshock data and foreshocks/aftershocks. For seismic-related studies, justifying the mainshock is very crucial. There are several methods for separating the mainshock of earthquake data from the foreshocks/aftershocks. This study employs three declustering techniques, including Gardner-Knopoff (1974), Gruenthal, and Uhrhammer (1986). The present study collected and analyzed 3543 earthquake events from 1971 to 2021 for Aceh region. In order to determine which method provides the highest a-value and b-value outcomes for Aceh’s seismicity conditions, this study compares the aforementioned three approaches. The Uhrhammer method (1986) has an a-value of 5.82, a b-value of 1.05, 1893 main shock events, 305 clusters, and 3.3 percent of the total seismic moment generated at that location are the findings from this study. According to the Gruenthal method, the results had an a-value of 4.53, a b-value of 0.823, 776 mainshock events, 304 clusters, and released 1.3 percent of the total seismic moment at that location. a-value of 5.1, b-value of 0.929, 1097 main shock events, 319 clusters, and a release of 1.08 percent of the total seismic moment at that location were the results of the Gardner-Knopoff method (1974). For seismic hazard evaluation with the highest level of risk, the Uhrhammer (1986) technique is appropriate. The Gruenthal approach is suggested for more conservative cases.