bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of the Acoustics Performance of the University’s Lecture Rooms by using Economical and Feasible Design Improvement Strategies
Authors: Razali Abdul Wafi , Che Din Nazli , Hamdan Sinin
Published: March 2024

Students encounter difficulties in speech comprehension because of unfavorable classroom acoustics conditions, which subsequently affect their cognitive development and academic performance. Therefore, optimal listening conditions are required to ensure that listeners perceive and recognize speech effectively. This invites numerous studies to explore plausible acoustic interventions and treatments as an initiative to remediate the issue. Thus, this study seeks to a) identify the actual acoustic conditions in two (2) classrooms in the Faculty of Built Environment, Universiti Malaysia Sarawak, and b) establish economical acoustic design strategies for future improvements. This quantitative study embarks on on-site acoustic measurements to evaluate the reverberation time and background noise level of the selected classrooms. The data from the on-site measurement is applied for 3D model verification for the simulation process. The establishment of plausible design treatment alternatives is further analyzed through simulation using ODEON software. The simulation process yielded the effects of a) material surface treatment and b) sound field amplification systems on several acoustic parameters. The findings reveal that the surface treatment using low-cost material and the installation of sound field amplification significantly enhanced the classroom acoustic quality and are feasible to be implemented for future improvements.
Materials and Processes of Eco-concrete Mixtures for Artificial Marine Habitats
Authors: Mun Chong Amanda Kar , Ikrami Mutti Mohd Alif , Cheah Chee Ban , Yee Jean Chai , Chee Su Yin
Published: March 2024

Poor quality habitat profiles of artificial coastal structures for biodiversity growth compared to natural shore have led researchers to utilize ecological engineering principles in creating habitat enhancement models mimicking the natural environment to help improve living conditions for marine organisms. Extensive global trials have been conducted with concrete formulations incorporating eco-friendly materials and recycled resources. However, eco-concrete production for marine environment use is still lacking in Malaysia. The technology involved in casting, moulding, and demoulding remains at the experimental stage, with unreported comparisons of different moulding materials used for casting geometrically complex habitat enhancement models. This study evaluated different casting, moulding, and demoulding techniques using locally produced eco-concrete. The main aim of this study is to determine the effect of different materials including plaster of Paris, drilling wood, expanded polystyrene, rubber foam, and vacuum forming on the mould production time, labour requirements and fabrication factors. Vacuum forming mould is highly preferred for its quick production time, less work, design uniformity, and ability to cast larger habitat enhancement models. However, the demoulding methods require improvements and further experimentation to ensure an easier demoulding process and reusability of the mould for long-term production.
ANALYZING THE THEORIES OF CONTRIBUTING FACTORS TO PUBLIC ACCIDENTS IN THE MALAYSIAN CONSTRUCTION INDUSTRY: A BRIEF OVERVIEW OF CONSTRUCTION WORKERS
Authors: Shuhada Azil Nurul Ain , Jabar Izatul Laili , Che Ahmad Asmalia
Published: March 2024

In Malaysia, the construction industry faces a wide range of challenges, one of which is the public accident and injuries at the construction sites. Construction is well known as a labor-intensive industry, thus the need to provide awareness to construction workers regarding public accidents should be the main consideration during the project implementation. On the other hand, the unsafe acts of construction workers were also considered major contributors to public accidents and injuries at construction sites. Therefore, this study aims to analyze the factors that are related to the construction workers which contribute to public accidents in the Malaysian Construction Industry. The researcher has devised two (2) objectives to accomplish the study's purpose; (1) to explore public accident cases in the construction industry, and (2) to identify the factors related to construction workers that contribute to public accidents in the Malaysian construction industry. A snowballing technique was applied through the reference list of reviewing previous papers and the findings reveal thirty-one (31) factors that are related to the construction workers which lead to public accidents and injury. The contribution of this study can therefore be a mechanism for construction workers to manage safe conditions at the workplace and raise awareness in comprehending factors that emerge in the construction industry.
Influence of Millennial Range Orbital Cycles on Middle Eocene Climatic Optimum Hyperthermals
Authors: Fox Maddie , Slawson Jake , Plink-Bjorklund Piret
Published: March 2024

The Eocene (55-34 Mya) was marked by a transition from a greenhouse to
an icehouse climate, and also experienced several hyperthermals, which
are rapid, extreme global warming events. These hyperthermal events were
caused by rapid increases in atmospheric CO
concentration, so they provide the opportunity to study how Earth
systems respond to rapid and high magnitude changes in atmospheric
CO. Understanding the drivers of major climate change
events, like these ones, is an important step in understanding modern
climate change. One such event, the Middle Eocene Climatic Optimum, was
a major climatic shift lasting approximately 500 kyr. Orbital forcers,
most notably variations in the amount of solar irradiance reaching
Earth, are believed to explain many of the observed climatic variations
in both this epoch and others. Changes in orbital patterns are widely
believed to explain cyclicities on the 20,000 to 100,000 year scale,
while changes in solar irradiance have effects on the sub-1,000 year
scale. However, little work has been done to understand the influence of
orbital cycles of periods between these, in the millennial range. This
study aims to bridge this knowledge gap by performing spectral analyses
of Middle Eocene Climatic Optimum temperature proxy records to determine
if millennial-range orbital cycles have an observable influence on
climate dynamics. Using temperature proxy data from four Ocean Drilling
Program sites, spectral analysis was performed and prominent signals in
the spectra were identified. This analysis showed that all studied sites
had a statistically significant signal in the 2500 ± 250-year range,
which was identified as the Hallstatt cycle. A suggested mechanism for
the Hallstatt cycle, a spin-orbit coupling of the Jovian planets, is
astronomical in origin. This adds further evidence that dynamical solar
system chaos during this period contributed to the abnormal climate
patterns at play and suggests that external factors have a larger
climate forcing ability than previously thought. Delving into the
intricacies of solar system chaos and its impact on past climates
enhances our understanding of present and future climates, thus
empowering more accurate and informed predictions going forward.
Late Quaternary Glaciations on the Chukchi Margin, Arctic Ocean: Insights from Echo Sounding and Sediment Records
Authors: Joe Young Jin , Polyak Leonid , Jang Kwangchul , Vogt Christoph M. , Kim Sookwan , Kim Jung Hyun , Jin Young Keun , Hong Jong Kuk , Niessen Frank , Nam Seung-Il
Published: March 2024

Glacigenic bedforms such as multiple glacial lineations and moraines on
the Chukchi and East Siberian margins reveal recurrent waxing and waning
by voluminous ice masses. Despite their paleoclimatic significance, the
timing, geographic distribution, and mechanisms of these glaciations
remain inadequately understood. To enhance our understanding of the
Quaternary Arctic glacial history, we study high-resolution swath
bathymetry and subbottom profiling data with lithostratigraphy and
provenance of four sediment cores. These data characterize deposits of
the last two glaciations at the Chukchi margin and adjacent basins. In
all cores, multiple peaks of plagioclase are prominent in both glacial
intervals, probably reflecting predominant glacigenic input from the
East Siberian Ice Sheet (ESIS). Peaks of dolomite and quartz for tracing
the Laurentide Ice Sheet sources occur around the last glacial/deglacial
interval and in sediment preceding the penultimate glaciation. By
integrating seismostratigraphy with sediment cores, we constrain the
formation of mid-slope moraines on the western side of the Chukchi Rise
to the penultimate glaciation (estimated age range MIS 4 to 6).
Considering the coeval glacial erosion off the East Siberian margin, our
results confirm that the ESIS at that time extended to water depths of
~650/950 m on the Chukchi Rise/East Siberian margin. In
comparison, the last ESIS (MIS 2 to possibly 4) was smaller, with the
identified seafloor imprint limited to water depths of
~450 m on the Chukchi Borderland, while its extent on
the East Siberian margin remains to be determined.
A multi-disciplinary characterization and forecast of a unique fog event: microphysics measurements, mesoscale modeling and machine learning.
Authors: Gelman Anton , Ronen Ayala , Kunin Pavel , Tzadok Tamir , Agassi Eyal , Sheu Rong-Shyang , Pietrkowski Adam , Rostkier-Edelstein Dorita
Published: March 2024

We present a multidisciplinary study of the microphysics, mesoscale and
synoptic conditions of a rare radiation-fog event in the central and
southern regions of Israel during January 3-6, 2021. The fog developed
during nighttime from south to central coastal areas and dissipated at
morning. The synoptic conditions were dominated by Red Sea Troughs at
the surface without cyclonic upper air circulation, suitable for
radiation fog development. In-situ measurements were combined with
satellite imagery, high resolution (1-km grid size) Weather Research and
Forecast model (WRF) with Real-Time Four-Dimensional Data Assimilation
(RTFDDA) forecasts and post-processing algorithms including machine
learning (ML) to analyze this event and to evaluate its numerical
forecasting. The micro-physical analysis involved measurements of
droplet size distribution and visibility range, allowing the calculation
of liquid-water content and effective diameter of fog droplets. The
measured visibility range was 90 m. The droplet diameter main mode was
1-2 micrometers, followed by another one around 6 micrometers. Typical
liquid-water content values were 0.01-0.025 g/m3. WRF-RTFDDA mesoscale
forecasts, post-processed by simple thresholds-based and ML algorithms,
largely succeeded in predicting the temporal and spatial development of
the dense fog. They proved useful in distinguishing between near-surface
fog and elevated fog/low clouds, a distinction not possible from
satellite imagery only. Clear patches at coastal areas covered in part
by urban landuse were observed both in satellite imagery and model
forecasts. WRF-RTFDDA forecasts proved their usefulness in forecasting
this massive fog and low clouds events and in providing alerts to
operational users and field campaign deployments.
Provenance of the Neogene Deposits in the Western Himalayan Foreland Basin: Implications for Drainage Reorganization during the Late Miocene Uplift of the Himalaya
Authors: Maitra Akeek , Anczkiewicz Robert , Porębski Szczepan J , Mukhopadhyay Dilip K
Published: March 2024

Interaction between large-scale tectonics of the Himalaya and the Indian
summer monsoon play a major role in shaping drainage systems of major
Himalayan rivers. In this study we attempted to track the sediment
sources of the Neogene‒Quaternary fluvial deposits of the Kasauli
Formation and Siwalik Group in the Subathu Basin of the Western
Himalayan foreland basin. The depositional interval of these deposits
spans from middle Miocene to Pliocene which overlap with the onset of
Indian monsoon and its influence on the denudation of Himalayan rocks.
Provenance analysis based on our detrital zircon U-Pb geochronology and
bulk rock Sr-Nd-Hf isotope data indicates that these Neogene‒Quaternary
rocks record chiefly the exhumation of the Higher Himalayan Crystalline
Sequence. However, at recurrent intervals within the Siwalik Group the
presence of zircon population 40–110 Ma in age suggests a sediment
sourcing from the Trans Himalayan batholith. We propose that the Sutlej
River that originates in south Tibet acted as a transverse
paleodispersal system and routed these arc-derived sediments to the
Himalayan foreland basin via one of its extinct paleochannels. Zircon
data suggest that this across-orogen routing system was particularly
effective during the deposition of Middle Siwalik Formation (ca 11- 4.5
Ma), when the rate of uplift of the Himalaya decreased. On the other
hand, the small-scale fluctuations in the presence of the Trans
Himalayan zircons observed in the Lower and Upper Siwalik formations may
primarily reflect climatic forcing, which induced changing monsoon
precipitation and the Sutlej’s transport capacity between dry and moist
periods.
The geodynamic significance of UHP exhumation: New constraints from Tso Morari Complex, NW Himalaya
Authors: Bidgood Anna , Parsons Andrew J , Roberts Nicholas M W , Waters David , Tapster Simon , Gopon Phillip
Published: March 2024

The burial and exhumation of continental crust to and from
ultrahigh-pressure (UHP) is an important orogenic process, often
interpreted with respect to the onset and/or subduction dynamics of
continent-continent collision. Here, we investigate the timing and
significance of UHP metamorphism and exhumation of the Tso Morari
complex, North-West Himalaya. We present new petrochronological analyses
of mafic eclogites and their host-rock gneisses, combining U-Pb zircon,
rutile and xenotime geochronology (high-precision CA-ID-TIMS and
high-spatial resolution LA-ICP-MS), garnet element maps, and
petrographic observations. Zircon from mafic eclogite have a CA-ID-TIMS
age of 46.91 ± 0.07 Ma, with REE profiles indicative of growth at
eclogite facies conditions. Those ages overlap with zircon rim ages
(48.9 ± 1.2 Ma, LA-ICP-MS) and xenotime ages (47.4 ± 1.4 Ma; LA-ICP-MS)
from the hosting Puga gneiss, which grew during breakdown of UHP garnet
rims. We argue that peak zircon growth at 47-46 Ma corresponds to the
onset of exhumation from UHP conditions. Subsequent exhumation through
the rutile closure temperature, is constrained by new dates of 40.4 ±
1.7 and 36.3 ± 3.8 Ma (LA-ICP-MS). Overlapping ages from Kaghan imply a
coeval time-frame for the onset of UHP exhumation across the NW
Himalaya. Furthermore, our regional synthesis demonstrates a causative
link between changes in the subduction dynamics of the India-Asia
collision zone at 47-46 Ma and the resulting mid-Eocene plate network
reorganization. The onset of UHP exhumation therefore provides a tightly
constrained time-stamp significant geodynamic shifts within the orogen
and wider plate network.
világ legütőképesebb harckocsijai 2. rész
Authors: Farkas Zoltán
Published: March 2024

A harckocsik a szárazföldi erők legfontosabb harceszközei közé tartoznak. Kiemelt szerepet játszanak a harc megvívásában, bármeghatározó jellegüket egyes szakértők napjainkban már megkérdőjelezik. Az idők során a tervezők folyamatosan tökéletesítették a harckocsit, amelynek az alkalmazók által támasztott követelménynek meg kellett felelniük. A harctéri alkalmazás során szerzett tapasztalatok tehát alapvetően határozzák meg a fejlesztések irányát, így a változtatások-finomítások szinte folyamatosak. Részben ez az oka annak, hogy az egyes típusok különböző változataival egyidőben lehet találkozni. A valós adatokhoz történő hozzáférés nem minden esetben biztosított, ezért a 11 legkorszerűbb típus bemutatása után a szerző nem állít fel sorrendet a harckocsik között. Az ismertetett típusok egymástól eltérő, egy-egy területen kiemelkedő adottságokkal rendelkeznek, de összességében – képességek tekintetében – közel azonos harcértéket képviselnek.
legkorszerűbb érzékelő eszközrendszerek
Authors: Ocskay István
Published: March 2024

A szerző az MH Haderőmodernizációs és Transzformációs Parancsnokság Modernizációs Igazgatóság igazgatójaként vett részt előadóként a brit SAE Media Group 2023. április 24–25. között, Londonban megrendezett Future Armored Vehicles Situational Awareness 2023 című konferencián. A tanácskozás célja, hogy tájékoztatókon és panelbeszélgetéseken keresztül fokozza a helyzettudatosságra épülő rendszerekkel foglalkozó ipari és katonai szereplők tájékoztatását és fejlődését. A jövő páncélozott harcjárműveinek helyzettudatosságára összpontosító egyetlen konferenciaként, a vitákat és a panelbeszélgetéseket vezető, szakértők által kiválasztott előadók révén, a szervezők szeretnének valódi betekintést nyújtani a konferencia résztvevői számára, hogy széles vertikumban tájékoztatást kapjanak az ipari, vagy tisztán katonai vonatkozású az ún. SAS-rendszerek területén elért fejlődésről.
Védelmi Innovációs Kutatóintézet, a NATO DIANA és a hazai védelmi célú innováció új rendszere 1. rész
Authors: Porkoláb Imre , Hennel Sándor , Hegedűs Ernő
Published: March 2024

A 2023-ban felállított Védelmi Innovációs Kutatóintézet (VIKI) célja a már meglévő hazai és nemzetközi innovációs ökoszisztémarendszer – az egyetemek, a kutatóintézetek, a laboratóriumok, a kis- és közepes vállalkozások, valamint a Honvédelmi Minisztérium – összekapcsolása a védelmi célra is fordítható duális célú kutatások leghatékonyabb megvalósítása érdekében. A VIKI egyik legfontosabb nemzetközi együttműködő partnere a NATO DIANA szervezete, amely kettős hasznosítású technológiák fejlesztésének céljából elsősorban a KKV-kat fejleszti.
ASEAN INVESTMENT DISPUTE SETTLEMENT MECHANISM THROUGH REGIONAL INVESTMENT COURT FRAMEWORK
Authors: Azaria Vida , Amalia Prita
Published: March 2024

In this paper, the authors provide an overview and comparison of the ASEAN dispute settlement mechanism (DSM) in the 2004 Protocol on EDSM and the ASEAN Comprehensive Investment Agreement (ACIA 2009) and review ASEAN's experience with investor-state dispute settlement (ISDS). The paper then examines the challenges and possibilities of restructuring ASEAN DSM through a Regional Investment Court. This includes discussing the potential benefits and drawbacks of such restructuring and its potential implications for regional integration. Finally, the paper offers some thoughts on possible future developments in this area, including the potential impact of a Regional Investment Court on the overall stability and effectiveness of the ASEAN DSM.
Covid-19 no Brasil: os impactos sobre a desigualdade de renda em 2020
Authors: Ribeiro Camila Oliveira , Bagolin Izete Pengo
Published: March 2024

O presente artigo visa analisar a evolução dos índices de desigualdade antes e durante a pandemia de Covid-19 no Brasil, observando os efeitos dos programas sociais, principalmente do Auxílio Emergencial (AE). Foram utilizadas as informações da Pesquisa Nacional por Amostra de Domicílios Contínua (PNADC) dos anos 2012 a 2020 e da Pesquisa Nacional por Amostra de Domicílios Covid-19 (PNAD Covid-19) em 2020, ambas realizadas pelo Instituto Brasileiro de Geografia e Estatística (IBGE). Os dados foram organizados em formato de painéis, permitindo observar as variações e estimar a desigualdade. Os resultados sugerem uma redução dos índices de Gini e Palma, indicando a importância do Auxílio Emergencial na manutenção da renda durante a pandemia em 2020.
Pengaruh Model Pembelajaran Inkuiri Terbimbing dipadu Brainstorming terhadap Kemampuan Berpikir Kritis dan Motivasi Belajar Siswa
Authors: Istiyova Lathifah Radha , Dwiastuti Sri , Santosa Slamet
Published: March 2024

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran inkuiri terbimbing dipadu aktivitas brainstorming terhadap kemampuan berpikir kritis dan motivasi belajar siswa. Jenis penelitian quasi eksperimen. Populasi seluruh siswa kelas X MIPA SMA N 1 Sukoharjo. Pemilihan sampel dengan purposive sampling. Rancangan penelitian pretest-postest nonequivalent control group design. Pengumpulan data dengan tes kemampuan berpikir kritis dan angket motivasi belajar siswa. Teknik analisis data dengan uji manova, uji regresi, dan uji N-Gain. Hasil analisis menunjukkan adanya pengaruh model pembelajaran Inkuiri terbimbing dipadu aktivitas brainstorming terhadap kemampuan berpikir kritis dan motivasi belajar siswa. Sumbangan efektif pada aspek kemampuan berpikir kritis mulai dari aspek tertinggi hingga aspek terendah mempunyai urutan basic support, elementary clarification, advance clarification, strategies and tactics, dan inference. Aspek motivasi belajar diperoleh urutan adanya kegiatan menarik, harapan cita-cita masa depan, hasrat keinginan berhasil, dorongan kebutuhan dalam belajar, penghargaan belajar, serta situasi belajar kondusif. Keefektifan model pembelajaran sebesar 0,70 kategori tinggi yang berarti model pembelajaran inkuiri terbimbing dipadu aktivitas brainstorming efektif untuk meningkatkan kemampuan berpikir kritis siswa.
Measuring the divergent thinking ability in biology science process skills of elementary school students based on tutoring activities
Authors: Ikhsanudin Ikhsanudin , Subali Bambang
Published: March 2024

Learning in the current era is often directed at developing creativity. Increasing creativity is very close to divergent thinking skills. This study aims at measuring the divergent thinking ability in biology science process skills of the sixth-grade students at elementary schools in one regency in relation to the tutoring activities along with the effect of gender and parents occupations. This study is a descriptive quantitative study employing a survey method. The sample includes 603 sixth grade students at 18 elementary schools in one regency which was determined using a purposive sampling technique. The divergent thinking ability is indicated by the scores of the open-ended test. The tutoring programs, gender, and parents professions of the samples were obtained from questionnaires. Scoring guidelines and descriptive statistics were used for data analysis. The mean of testee joining the tutoring program is relatively low (mean=17.93/40.00, SD=6.02). This empirically shows that the development of divergent thinking ability in biology science process skills at elementary school is not optimal yet, particularly in the research samples. There is a relationship between the gender and parents occupations with the students divergent thinking ability of biology science process skills regarding the tutoring activities. This can be studied and examined further.
Development of science subject-specific pedagogy to support disaster risk reduction in education: its feasibility and influence
Authors: Tyas Rizki Arumning , Pujianto Pujianto , Suyanta Suyanta
Published: March 2024

This research is aimed to (1) produce science subject-specific pedagogy based on discovery learning integrated volcanic eruption disaster consisting of syllabus, lesson plan, student worksheet, and handouts according to experts and learning practitioners, and (2) know the effectiveness of the influence of science subject-specific pedagogy based on discovery learning integrated volcanic eruption disaster to improve mastery concept and disaster preparedness in mitigation. This was a research and development (RD). The research and development used a 4-D model which consists of four stages define, design, develop, and disseminate. The data were collected through (1) Tests, using mastery concept questions and disaster preparedness questions, and (2) Non-tests, using product feasibility assessment instruments filled by experts and learning practitioners and disaster preparedness questionnaires. Data analysis was performed by: (1) Analysis of the feasibility and validity of the Science Subject Specific Pedagogy through the validation of experts and learning practitioners categorized according to the classification of product evaluation categories, and (2) Analysis of research results using descriptive statistical analysis of gain score calculation and inferential statistical analysis of ANOVA multivariate test (MANOVA) using the SPSS 22.0 program. The results of this research and development show that: (1) the Feasibility of science subject-specific pedagogy based on discovery learning integrated volcanic eruption disaster that has been developed, according to expert and learning practitioner assessments are in the category of very good, and (2) The influence of science subject-specific pedagogy based on discovery learning integrated with volcanic eruption disasters is effective to improve mastery concept and students' preparedness in disaster mitigation.
Development of stem-based lkpd on the theme of my house's electric circuits to improve explanation, inference and evaluation skills
Authors: Kiswari Lusinta , Singgih Suwito , Muhlisin Ahmad
Published: March 2024

One comprehensive and integrative learning approach is the STEM approach. This approach can improve students' explanatory, inference, and evaluation skills by combining the four disciplines: science, technology, engineering, and mathematics. Implementing STEM in teaching and learning activities can use teaching materials, including LKPD. This study aims to produce a valid, practical, and effective STEM-based LKPD product to improve students' explanatory, inference, and evaluation skills. The method used in this study is the research and development method. A validity test has been carried out consisting of a product validity test that is declared valid and suitable for use with a percentage of 80.9%. The effectiveness test is carried out with n-gain and effect size tests. Each obtained a result of 0.68 with the medium category and 2.7 with the high category. Practicality tests conducted by teachers obtained an average result of 83% and students of 87%. So, STEM-based LKPD can effectively improve students' explanatory, inference, and evaluation skills.
Development of science subject-specific pedagogy to support disaster risk reduction in education: Its feasibility and influence
Authors: Haka Nukhbatul Bidayati , Mauliana Luckyta , Supriyadi Supriyadi , Hamid Abdul
Published: March 2024

This development research aims to provide new innovations to learning media in Biology learning. The model used in developing this media adopts the Borg Gall development theory which is cut into 9 steps with a population of students in class XI MIPA. The instruments used are expert validation questionnaires, student response questionnaires, and critical thinking essay questions. The results of research in developing android-based virtual practicum media can improve critical thinking skills, become a simulation forum before carrying out activities in the laboratory (pre-lab), and become a solution to the shortage of laboratory facilities. The results of the validation of media experts get an average percentage of 91.66% with very decent criteria, material experts an average of 81.25% with very decent criteria, linguists produce 91.40% with very feasible criteria, and responses the percentage of students is 70.58% with proper criteria. The effectiveness of the media can be seen from the results of the hypothesis which gets Tcount  3.71 T table 2.00, and also the N-Gain value of the experimental class which is greater than the control class, namely the experimental class gets a value of 0.63 while the control class is 0.25.
The influence of problem-based-blended learning assisted with computer simulation on students' critical thinking skills
Authors: Oktafiana Eka , Widiyatmoko Arif
Published: March 2024

This study aims to determine the effect of Problem Based-Blended Learning (PBBL) assisted by computer simulations on critical thinking skills and to determine student responses after learning. This type of research is quasi-experimental with a nonequivalent control group design. The research sample was taken using a saturated sampling technique, with VII D as the experimental class and VIIC as the control class. Data collection techniques in this study include multiple choice with reasons to measure critical thinking skills and student response questionnaires. The influence of PBBL assisted by computer simulations on critical thinking skills can be seen in the t-test and N-Gain test results. The t-test results obtained a value of count table or 5,616 1,998, indicating a significant difference in students' critical thinking skills. The results of the N-Gain test in the experimental class got a value of 0.668 and 0.468 in the control class, so both classes were in the medium category. The results of this study were supported by 83.05% positive responses from students in the outstanding category. The results of this study indicate that computer simulation-assisted PBBL affects students' critical thinking skills.
Using blended learning with the help of google classroom and whatsapp in learning of solid substance physics
Authors: Hamid Abdul , Wahyuni Sri
Published: March 2024

This study aims to determine the effect of using blended learning assisted by Google Classroom and WhatsApp on the cognitive abilities of students in solid-state physics lectures. This research is quantitative pre-experimental research with one group pretest-posttest design. The research sample was 30 students who were taken by probability sampling technique. Data was collected using tests and non-tests. The data analysis technique used is descriptive statistics. The results of the analysis showed that the student's cognitive abilities reached good criteria, with an average pretest score of 40.13 while students' cognitive abilities in the post-test were 71.17, with an average n-gain of 0.52. The results of student responses to the implementation of blended learning assisted by google classroom and Whatsapp most of the students gave a positive response, this can be seen from the acquisition of an average score of 73.30%.
Emerging prediction of preeclampsia based on the expression of exosomal SUMO proteins
Authors: Gusar VA , Timofeeva AV , Fedorov IS , Tarasova AM , Suhova YuV , Ivanets TYu
Published: March 2024

The cellular response to various types of stress underlying placental vascular dysfunction is under the sumoylation control. Consequently, SUMO homeostasis is closely related to the maintenance of angiogenic balance, the disruption of which is a feature of preeclampsia (PE). The goal of the research is to search for exosomal markers of such a disorder. The expression and prognostic potential of exosomal SUMO 1–4, UBC9 and hnRNPA2/B1 were evalueted in 39 pregnant women (cohort I) in the first trimester using Western blotting technology. The expression of these proteins in the placenta (cohort II, 27 pregnant women) at the time of delivery was also assessed. The expression of their conjugated forms was significantly changed in pregnant women with early-onset (SUMO 1, p = 0.03; SUMO 2/3/4, p = 0.03) and late-onset PE (SUMO 1, p = 0.03; SUMO 2/3/4, p = 0.04; UBC9 and hnRNPA2/B1, p < 0.0001, respectively). This change may be due to the functional specificity of SUMO isoforms in the context of their subcellular targets upon exposure to stressful stimuli. Significant changes in the expression of these proteins were also found in the placenta. Significant correlations were established between the expression of exosomal SUMO 2/3/4 (r = –0.59; p = 0.01) and UBC9 (r = –0.88; p = 0.0001) with PlGF in early-onset PE. In late-onset PE, hnRNPA2/B1 (r = –0.48; p = 0.03) and UBC9 (r = –0.48; p = 0.03) was correlated with β-hCG, and SUMO 2/3/4 with PAPP-A (r = –0.60; p = 0.006) in the blood serum of pregnant women. The analyzed proteins also significantly correlated with uterine artery pulsation index (SUMO 1 (r = 0.59; p = 0.01), SUMO 2/3/4 (r = 0.54; p = 0.02), hnRNPA2/B1 (r = 0.75; p = 0.0001)) and mean arterial pressure (UBC9 (r = 0.53; p = 0.03)). Based on the data the logistic models have been created to predict the risk of developing early-onset (UBC9 (AUC = 0.88; Se-0.72; Sp-1)) and late-onset PE (SUMO 1 (AUC = 0.79; Se-0.8; Sp-0.77)) at 11–14 weeks of pregnancy.
Novye vozmozhnosti prognozirovaniya preeklampsii na osnove ekspressii ekzosomnyh belkov SUMO
Authors: Гусар В. А. , Тимофеева А. В. , Федоров И. С. , Тарасова А. М. , Сухова Ю. В. , Иванец Т. Ю.
Published: March 2024

Kletochnaya reakciya na stress, lezhashchij v osnove sosudistoj disfunkcii placenty, nahoditsya pod kontrolem sumoilirovaniya. Sledovatel'no, SUMO-gomeostaz tesno svyazan s podderzhaniem angiogennogo balansa, narushenie kotorogo harakterno dlya preeklampsii (PE). Cel' raboty — poisk ekzosomnyh markerov podobnogo narusheniya. Ocenivali ekspressiyu i prognosticheskij potencial ekzosomnyh SUMO 1–4, UBC9 i hnRNPA2/B1 u 39 beremennyh (kogorta I) v pervom trimestre s pomoshch'yu vestern-blottinga. V kogorte II (27 beremennyh) ocenivali ekspressiyu dannyh belkov v placente na moment rodov. Ekspressiya ekzosomnyh kon"yugirovannyh form znachimo izmenyalas' u beremennyh s rannej (SUMO 1, p = 0,03; SUMO 2/3/4, p = 0,03) i pozdnej PE (SUMO 1, p = 0,03; SUMO 2/3/4, p = 0,04; UBC9 i hnRNPA2/B1, p < 0,0001 sootvetstvenno), chto mozhet byt' obuslovleno funkcional'noj specifichnost'yu izoform SUMO v kontekste ih subkletochnyh mishenej pri vozdejstvii stressovyh stimulov. V placente takzhe obnaruzheny znachimye izmeneniya ekspressii kon"yugirovannyh form dannyh belkov. Pri rannej PE ustanovleny znachimye korrelyacionnye svyazi ekspressii ekzosomnyh SUMO 2/3/4 (r = –0,59; p = 0,01) i UBC9 (r = –0,88; p = 0,0001) s urovnem PlGF, a pri pozdnej PE — hnRNPA2/B1 (r = –0,48; p = 0,03), UBC9 (r = –0,48; p = 0,03) s β-HGCH, i SUMO 2/3/4 (r = –0,60; p = 0,006) s koncentraciej PAPP-A v syvorotke krovi beremennyh. Analiziruemye belki dostoverno korrelirovali s pul'sacionnym indeksom matochnoj arterii (SUMO 1 (r = 0,59; p = 0,01), SUMO 2/3/4 (r = 0,54; p = 0,02), hnRNPA2/B1 (r = 0,75; p = 0,0001)) i srednim arterial'nym davleniem (UBC9 (r = 0,53; p = 0,03)). Na osnove poluchennyh dannyh sozdany logisticheskie modeli prognozirovaniya riska razvitiya rannej (UBC9 (AUC = 0,88; Se-0,72; Sp-1)) i pozdnej PE (SUMO 1 (AUC = 0,79; Se-0,8; Sp-0,77)) na sroke 11–14 nedel' beremennosti.
The Effect of Backhand Groundstroke Training Variations on Backhand Ability in the Unimed Court Tennis Community in 2022
Authors: Kembaren Ronaldo Abadi S. , Siregar Irwansyah
Published: March 2024

This study aims to determine the effect of backhand groundstroke training variations on backhand ability in the Unimed tennis community in 2022. This research was conducted on the Unimed tennis court, Jalan William Iskandar Pasar V Medan Estate with a population of 20 students and a sample of 10 students. The research period was conducted from February 18th to April 3rd, 2022 with a frequency of 18 sessions for 6 weeks. This study used experiments with the test instrument in this study, namely the backhand ability test. The independent variable in this study is backhand groundstroke training and backhand ability is as the dependent variable. From the results of data processing with statistical analysis, it is obtained that tcount is equal to 4.56 and ttable is equal to 2.26 based on the distribution table of t with dk (n-1) 10 - 1 equal to 9 and at the Î± level of 0.05 equals to 2.26 which means tcount > ttable (4.56 > 2.26). Thus, Ha is accepted and H0 is rejected. In this case, it can be concluded that variation trainings in backhand groundstroke have a significant influence on the results of backhand ability in the Unimed court tennis community in 2022.
INTERAKSI SOSIAL GURU DALAM PEMBELAJARAN SEJARAH DI SMA NEGERI 4 METRO
Authors: Pridako Hendy , Hidayat Bobi
Published: March 2024

At the time of the learning process a teacher has a high creativity and there should be interaction during the learning process, so that learners who follow the learning process is interested and not bored. The research objectives are a. To know the social interaction of teachers in history learning at SMA N 4 Metro, b. To describe teacher constraints in learning history at SMA N 4 Metro, c. To describe the teacher's efforts to overcome obstacles while interacting with students in SMA N 4 Metro. The method used in this research is observation, interview, literature, and documentation. When interacting to the learners the teacher always gives the spirit to learn, so that the mindset of these learners can slowly change the better and the learning process according to what is desired.Here's how teachers to interact with learners in learning history class X SMA Negeri 4 Metro, as follows: a. Establish good communication early in class, b. Provide motivation in the learning process in the classroom, c. Provide advice to learners in order to establish good communication. Here are the constraints or difficulties of teachers in learning history in class X SMA Negeri 4 Metro, as follows: a. When teachers interact with learners sometimes learners busy chatting outside learning materials, b. When the teacher explains the learner's material instead of playing HP so as not to focus while the learning takes place, c. Learners do not focus during the daytime due to drowsiness, hunger, and fatigue. How teachers overcome obstacles encountered as follows: a. Provide questions to students who are noisy in the classroom. b. Learners who do not pay attention to being rebuked directly.
PERAN SITI WALIDAH DIBIDANG PENDIDIKAN DAN SOSIAL DALAM PERKEMBANGAN AISYIYAH TAHUN 1917-1946
Authors: Wati Ika Setiya , Agustono Ragil
Published: March 2024

Problems in this research The role of Siti Walidah in the field of education and social to promote education and improve the dignity of women. The method used in this research is the historical method by conducting literature study. Data collection techniques in this study using heuristic steps and literature study. In testing the truth of a data or validity of data collection used internal and external critic, while for data analysis method is by interpretation and historiography. The results of this study are:The role of Siti Walidah in the field of education in an effort to realize and advance education) including those who succeed in their business in the field of education is not only a theory, but actively proven to educate indigenous women of the 20th century and promote the religious education of women in the educational process. Done by Siti Walidah is held dormitory daughter-daughter from various regions in Indonesia, Siti Walidah actively assist the smooth implementation of the girls schools and then educate the women through the course and conduct pengajian of Islam and participate in the eradication of illiteracy.The role of Siti Walidah in the social field is to play an active role in the development and empowerment of the potential of women and increase the dignity of women. Siti Walidah builds and develops the potentials of women so that they are active in the development of activities as well as in the orphanage builder named Putri Aisyiyah and help the poor, orphans to make an activity within the community.
PENGEMBANGAN DESAIN MEDIA PEMBELAJARAN BERBASIS KATALOG PENINGGALAN SEJARAH LOKAL UNTUK MENGUATKAN PEMAHAMAN SEJARAH LOKAL SISWA DI SMA NEGERI 3 MENGGALA TULANG BAWANG
Authors: Agustina Dika , Amboro Kian
Published: March 2024

The purpose of this research is to find the media of Learning Media catalog which can give information briefly, regularly and clearly about the material of history of war against colonialism, the time of arrival process and the power of VOC, and the impact of Dutch government in class XI, and in class X the impact in spreading Islam and also aims to strengthen the understanding of local history of the students. This type of research is a Level 1 development which is where in the preparation of this medium with the development method Sugiyono level 1 which where only test the feasibility of the product with internal validating stage by the team of experts not to the stage test try to students, with the preparation must also be adjusted with the analysis KI, KD and the subject matter, after the drafting process is completed then the next stage can be validated internally by a team of material and media experts.Based on the results of research, has been obtained instructional media based local historical heritage in Menggala Tulang Bawang which has been through the validation stage, validation is a media feasibility test developed, validation is through two stages of stage 1 and 2, which of course there are suggestions and comments in order to revise the product back up to the criteria worth at least score 81 and from the data obtained on the validation of material and media experts there is an increase in scores at stages 1 and 2, in stage 1 the material got a percentage of 78% and in stage 2 with the value 88% percentage. While the validation of media experts in stage 1 got the percentage of 80% and in stage 2 got a percentage of 94%. From these data can already be declared feasible tested
PERKEMBANGAN RUANG SOSIAL DAN RELIGIUS DI KOTA METRO TAHUN 2000 - 2017
Authors: Dayanti Dian Rizki , Sumiyatun Sumiyatun
Published: March 2024

The presence of social and religious space in a city can be one of the choices for people to eliminate fatigue that is felt so that the community is able to interact, socialize, gather and create in an emotional (communal) building besides that it can support and direct the community towards progress in religious as well as the noble values of their ancestors so that the presence of social public space and religious public space in a city is very important for the community. The approach used in this study is a qualitative method with a type of naturalistic research. Data analysis techniques that will be used are data reduction, data presentation and conclusion drawing. Based on the results of the study, it was found that the development of social space and religious space in Metro City experienced a rapid increase. This is evidenced by the conduct of renovations carried out in social and religious spaces in Metro City which can have a positive impact on the economy of the community. The conclusion of this study is the development of social space and religious space so that in social space not only as a place for recreation but can support the economy of society in addition to the religious space not only as a place for worship but can also be used as an Islamic nuance recreation.
PENGEMBANGAN MODUL SEJARAH LOKAL KOTA METRO UNTUK MENGUATKAN KESADARAN SEJARAH
Authors: Syahidah Fadhilah , Setiawati Elis
Published: March 2024

The objectives of this research are (1) to describe the local history teaching materials used in SMA N 1 Metro, (2) get a general description of the level of awareness of history of SMA N 1 Metro students, (3) get the module design of local history of Metro City to strengthen the awareness of history, (4) to describe the opinion of experts and practitioners about the feasibility of local Metro City's local history module in strengthening historical awareness. The method used in this research is research and development with the development model adapted from Sugiyono level 1, that is research to produce the product but not test it. The study results are (1) the use of learning resources in SMA N 1 Metro is still synonymous with textbooks or print and the internet, (2) the level of awareness of high school students N 1 Metro by 67% with high category, (3) module of local history City Metro is designed in accordance with the syllabus of the 2013 curriculum entitled 'History and Development of Metro City', (4) the result of material validation of phase one with percentage of 73% and stage two of 89%, an increase of 16%. The results of the design validation stage one 61%, after the improvement and validation test conducted in phase two to 89%, with a 28% increase. Based on the results of the validation, the local delivery module Metro City to strengthen the consciousness declared feasible test.
POLITIK DIPLOMASI PERDANA MENTERI AMIR SYARIFUDIN DAN PERJANJIAN RENVILLE
Authors: Ervani Ervani , Sumiyatun Sumiyatun , Kuswono Kuswono
Published: March 2024

In the early days of Indonesian independence, the Netherlands was a country that did not want to recognize Indonesia's de facto independence. Under Prime Minister Amir Syarifudin, Indonesia carried out political diplomacy with the Netherlands. Amir Syarifudin chose diplomacy because he saw that the Dutch fighting strength was much better than Indonesia at that time and so that there would be no morebloodshed. The purpose of writing this article is to find out how Indonesia's diplomacy politics during the revolution under Prime Minister Amir Syarifudin was an effort to defend Indonesia's independence. In this study, the author uses the historical method with data collection techniques using relevant literaturestudies. The results showed that the diplomacy chosen by Prime Minister Amir Syarifudin was still not able to satisfy the Indonesian people. The conclusion of this research is that Amir Syarifudin's diplomacy caused great disappointment and brought down Amir Syarifudin's cabinet.Keywords: Politics; Diplomacy; Amir Syarifudin
PENGARUH METODE PEMBELAJARAN ENRICHMENT MODEL RENZULLI TERHADAP KEMAMPUAN BERPIKIR KRITIS PESERTA DIDIK DALAM PEMBELAJARAN SEJARAH KELAS XI IPS
Authors: Putri Herlinda Ika , Sumiyatun Sumiyatun
Published: March 2024

The purpose of this study was to determine the effect of Renzulli's Enrichment learning method on students' critical thinking skills in learning history of class XI IPS. This research was conducted at SMA N 1 Purbolinggo. The type of research used is quasi experiment. In this study the design (design) used is Nonequivalent Control Group Design. Conducting research, namely research preparation, test trials, pre-test treatment, learning activities, and post-test administration. The results of the study are as follows: (1) There is a difference in the average historical learning outcomes of students who use the Renzulli Model Enrichment Learning Method ( 𝐱𝟏 = 77.5294) is greater with a range value of 6.8529 than the average using the discussion method ̅𝐱𝟐 = 70.6765), (2) The average results of students' critical thinking skills in history learning using the Renzulli Model Enrichment Learning Method ( 𝐱𝟏 = 77.5294) is greater with a range value of 6.8529 than the average using the discussion method ̅𝐱𝟐 = 70.6765). Thus it can be concluded that the Renzulli Model Enrichment Learning Method has a significant influence on students' critical thinking skills in history learning.
TINJAUAN HISTORIS PEMERINTAHAN DINASTI MUGHAL PADA MASA PEMERINTAHAN SULTAN AKBAR TAHUN 1556-1605 M
Authors: Pertiwi Putri Dian , Setiawati Elis
Published: March 2024

The presence of the Mughal Empire formed a new civilization in the area which at that time experienced a decline and backwardness. The Islamic Mughal Empire was able to raise the spirit of the Muslims in India. This shows that the Mughal Empire was not the first Islamic empire in India. The purpose of this study is to describe the background of Sultan Akbar's life, to describe the policies implemented by Sultan Akbar, and to describe the influence of the policies implemented by Sultan Akbar in India. This research approach is historical research. This research method uses the Historiography method. This research was conducted at the UM Metro library by reviewing the literature on theMughal Dynasty during the reign of Sultan Akbar. The result of this research is that Sultan Akbar has a brave character and likes to play a role and also he has a tolerant soul, so that when he ruled in the Mughal kingdom he was famous for his tolerance. With the tolerant spirit that Sultan Akbar had, in ruling the Mughal empire he applied the Sulakhul (universal tolerance) policy. It deals with equal rights between Muslims and non-Muslims. Sultan Akbar in addition to implementing Sulakhul politics (universal tolerance), he also carried out various efforts in ruling in the Mughal kingdom including making Khana worship for the king's association with Muslim royal leaders in religious and government matters and making Din-i-Ilahi very controversy.