bluuebunny/crossref_metadata_2025 huggingface dataset:
Utilização de substância esclerosante no tratamento de hemangioma em dorso de língua e sua relação com o período de gravidez e lactação: relato de caso
Authors: Silva Letícia Campos , Guimarães Flaviana Ribeiro , Santos João de Paula dos , Ferreira Junior Davilson Bragine , Doriguetto Paulo Victor Teixeira
Published: March 2024

Os hemangiomas são considerados malformações vasculares benignas dos vasos sanguíneos, com características variáveis. O presente estudo relata um caso de hemangioma em dorso de língua que aumentou significativamente durante a gravidez e, após o período de aleitamento materno, a paciente queixou-se de crescimento volumétrico, de forma indolor e com alteração de coloração. O exame foi positivo em teste de diascopia ou vitropressão. O tratamento de escolha foi a aplicação de substância esclerosante, para posterior abordagem cirúrgica.
Survival Analysis of Newly Diagnosed Multiple Myeloma Patients after Frontline Autologous Stem Cell Transplantation in a Real-Life Setting
Authors: Garrido David , Bove Virginia , Villano Fiorella , Riva Eloísa
Published: March 2024

Introduction: Autologous stem cell transplantation (ASCT) is the standard consolidation option for transplant-eligible patients with multiple myeloma (MM). The aim of this study is to report the overall survival (OS) and progression-free survival (PFS) outcomes after frontline ASCT in newly-diagnosed MM (NDMM) patients in a real-world setting. Methods: We conducted a retrospective, survival analysis of all NDMM patients included in the MM Uruguayan Registry. Results: We included 151 NDMM patients treated with induction therapy followed by high-dose melphalan and ASCT as consolidation. The median age at diagnosis was 59 years, and the international staging system (ISS) risk groups were ISS-III 32.9%, ISS-II 37.8%, and ISS-I 29.4%. Frontline induction regimens included bortezomib in 61.6% of cases, and maintenance therapy was used in 63.9% of reported cases. With a median follow-up of 42 months, the 36-month OS and PFS for the whole group were 82.4% (95% CI 75.9% to 89.4%) and 63.8% (95% CI 55.6% to 73.3%), respectively, median OS of 98 months and median PFS of 47 months. The 100-month OS and PFS for the entire group were 48.0% (95% CI 34.9% to 66.0%) and 17.3% (95% CI 8.4% to 35.8%), respectively. Conclusion: ASCT is a feasible, safe, and potent strategy that provides a prolonged median OS and PFS in NDMM patients. This approach can be implemented in low-income countries.
Gelatinases A and B and Antioxidant Enzyme Activity in the Early Phase of Acute Myocardial Infarction
Authors: Gopcevic Kristina , Rovcanin B. , Kekic D. , Milasinovic D. , Kocic G. , Stojanovic I.
Published: March 2024

Oxidative stress plays important roles in the pathophysiology of acute myocardial infarction (AMI). The aim of this study was to investigate the correlation of the oxidative stress status and matrix metalloproteinase activity in AMI patients in comparison to controls. This study included 136 subjects: 68 patients with AMI (42 males/26 females; mean age 58.5 ± 10.5 years) and 68 controls (37 males/29 females; mean age 60.2 ± 12.4 years). Gelatinases A and B were assayed using gelatin zymography, enzyme activities were obtained spectrophotometrically. Gelatinase A and B activities were increased in the AMI patients’ group compared to the control. Activities of serum superoxide dismutase (SOD) and xanthine oxidase (XO) were significantly higher in AMI patients (106.53 ± 23.45 U/l, P < 0.001 and 158.18 ± 29.59 U/l, P < 0.001) than in the control group (55.99 ± 10.79 U/l and 79.81 ± 7.93 U/l). The activity of catalase (CAT) in the sera of AMI patients was lower (271.31 ± 7.53 U/l, P < 0.005) than in the control group (305.94 ± 97.28 U/l). Plasma glutathione peroxidase (GPx) and glutathione reductase (GR) in AMI patients were significantly higher (582.47 ± 184.81 U/l, P < 0.001 and 59.64 ± 21.88 U/l, P < 0.001) than in the control group (275.32 ± 104.69 U/l and 47.71 ± 20.05 U/l). The present findings demonstrate activation of gelatinases A and B and oxidative stress markers in the early stage of AMI. Gelatinases, detected at high levels in AMI patients only, indicate their noticeable predisposition for becoming additional biomarkers of the early phase of AMI.
Optimizing the performance of concrete tiles using nano-papyrus and carbon fibers
Authors: Jawad Zahraa Fakhri , Salim Lamyaa Ghanim , Hussain Sarah Silan , Salman Awham J. , Radhi Sabaa
Published: March 2024

Concrete is considered one of the greatest innovations in the construction industry since it has significant applications in the construction field. The main limitation of concrete is the low flexural and tensile strength, especially for concrete tiles used for floors and roofs. Therefore, this study aims to enhance the behavior of concrete tiles by using both nano-papyrus (NP) and carbon fibers (CF). Eleven different concrete mixtures with different content of NP and CF were prepared using various models, and the percentage of NP content ranged from 1.5 to 7.5%, while the percentage of CF content ranged from 0.2 to 1%; flexural strength and water absorption tests were also conducted. It was found that employing NP enhanced the flexural strength of concrete tile by up to 48%, whereas using both NP and CF optimized the flexural strength by up to 57%. Also, the surface and total absorption rates decreased by up to 47.1 and 52.6%, respectively.
Elmélet és mozgalom
Authors: Kapelner Zsolt
Published: March 2024

Miként viszonyul egymáshoz elmélet és gyakorlat a baloldali hagyományban? Mennyiben tartható fenn e kettő éles megkülönböztetése?
A másik pingponglabda
Authors: Bozsoki Petra
Published: March 2024

„Voltaképpen a Genderőrületek… mélyén karakteres (tág értelemben vett) politikai elköteleződés húzódik: a demokratikusság alapvető értékként kezelése.” – Bozsoki Petra recenziója Kováts Eszter könyvéről.
Procedimiento para la rehabilitación ambiental de las minas abandonadas. Aplicación a minas de recursos pétreos en la comunidad de San Pablo Autopan, Estado de México
Authors: Gómez Benítez Daniel Fernando , Mondragón de Jesús Edgar , Ordaz Hernández Alexis , Sánchez Carmona Fernando
Published: March 2024

La investigación se enfoca en proponer un procedimiento para la rehabilitación de minas de materiales pétreos abandonadas. El procedimiento es aplicable a diferentes contextos geográficos donde se desee restaurar bajo una perspectiva ecológica. En este trabajo se realiza la aplicación del procedimiento a las minas de San Pablo Autopan, Estado de México. Se inicia con la investigación documental, que permitió el análisis de la información y la colecta de datos cartográficos que contenía información geológico-ambiental y ecológica del sitio. Además, se valoran indicadores físicos, sociales y normativos (normatividad ambiental vigente para cada país). Se propuso un uso recreativo para el sitio afectado, donde se pueden realizar actividades de esparcimiento como el senderismo y actividades deportivas. La aplicación de la propuesta en minas abandonadas de la comunidad de San Pablo Autopan podría reducir la disposición inadecuada de residuos sólidos urbanos y los subsecuentes impactos negativos al medio ambiente.
The Effect of Different Weight Plate Widths (Bumper vs. Standard) on the Biomechanics of the Bench Press
Authors: Fiedler Matthew J. , Triplett N. Travis , Hamilton Keane C. , Needle Alan R. , van Werkhoven Herman
Published: March 2024

Fiedler, MJ, Triplett, NT, Hamilton, KC, Needle, AR, and van Werkhoven, H. The effect of different weight plate widths (bumper vs. standard) on the biomechanics of the bench press. J Strength Cond Res 38(4): e143–e149, 2024—Anecdotal evidence suggests that bumper plates impact lifts in powerlifting and weightlifting differently than standard cast iron plates, but whether biomechanical differences exist between lifts using bumper versus standard plates has not been investigated. Eleven resistance-trained subjects performed the bench press at 70, 80, and 90% of their 1 repetition maximum (1RM) while being blinded to whether they were lifting with bumper or standard plates. Motion data were captured by an 8-camera motion capture system, and electromyography (EMG) data were recorded for the anterior deltoid, pectoralis major, and triceps brachii. Repeated-measures analysis of variances showed a significant main weight effect for time under tension (p < 0.001), total work (p < 0.001), and muscle activity through EMG (across all muscles; p < 0.001) and a significant weight × joint interaction effect for average joint moment (p < 0.001) and peak joint moment (p < 0.001). However, there were no significant differences observed between the different weight plates for any of the measures. The main finding of the study suggests that there are no biomechanical differences between using bumper plates compared with standard plates during the bench press lift.
Determining Changes in Muscle Size and Architecture After Exercise Training: One Site Does Not Fit all
Authors: Nunes João Pedro , Blazevich Anthony J. , Schoenfeld Brad J. , Kassiano Witalo , Costa Bruna D.V. , Ribeiro Alex S. , Nakamura Masatoshi , Nosaka Kazunori , Cyrino Edilson S.
Published: March 2024

Nunes, JP, Blazevich, AJ, Schoenfeld, BJ, Kassiano, W, Costa, BDV, Ribeiro, AS, Nakamura, M, Nosaka, K, and Cyrino, ES. Determining changes in muscle size and architecture after exercise training: One site does not fit all. J Strength Cond Res 38(4): 787–790, 2024—Different methods can be used to assess muscle hypertrophy, but the effects of training on regional changes in muscle size can be detected only using direct muscle measurements such as muscle thickness, cross-sectional area, or volume. Importantly, muscle size increases vary across regions within and between muscles after resistance training programs (i.e., heterogeneous, or nonuniform, muscle hypertrophy). Muscle architectural changes, including fascicle length and pennation angle, after resistance and stretch training programs are also region-specific. In this paper, we show that the literature indicates that a single-site measure of muscle shape does not properly capture the effects achieved after exercise training interventions and that conclusions concerning the magnitude of muscle adaptations can vary substantially depending on the muscle site to be examined. Thus, we propose that measurements of muscle size and architecture should be completed at multiple sites across regions between the agonist muscles within a muscle group and along the length of the muscles to provide an adequate picture of training effects.
Identification of Early Hippocampal Dynamics during Recognition Memory with Independent Component Analysis
Authors: López-Madrona Víctor J. , Trébuchon Agnès , Mindruta Ioana , Barbeau Emmanuel J. , Barborica Andrei , Pistol Costi , Oane Irina , Alario F. Xavier , Bénar Christian G.
Published: March 2024

The hippocampus is generally considered to have relatively late involvement in recognition memory, its main electrophysiological signature being between 400 and 800 ms after stimulus onset. However, most electrophysiological studies have analyzed the hippocampus as a single responsive area, selecting only a single-site signal exhibiting the strongest effect in terms of amplitude. These classical approaches may not capture all the dynamics of this structure, hindering the contribution of other hippocampal sources that are not located in the vicinity of the selected site. We combined intracerebral electroencephalogram recordings from epileptic patients with independent component analysis during a recognition memory task involving the recognition of old and new images. We identified two sources with different responses emerging from the hippocampus: a fast one (maximal amplitude at ∼250 ms) that could not be directly identified from raw recordings and a latter one, peaking at ∼400 ms. The former component presented different amplitudes between old and new items in 6 out of 10 patients. The latter component had different delays for each condition, with a faster activation (∼290 ms after stimulus onset) for recognized items. We hypothesize that both sources represent two steps of hippocampal recognition memory, the faster reflecting the input from other structures and the latter the hippocampal internal processing. Recognized images evoking early activations would facilitate neural computation in the hippocampus, accelerating memory retrieval of complementary information. Overall, our results suggest that the hippocampal activity is composed of several sources with an early activation related to recognition memory.
Serotonin signaling in hippocampus during initial cocaine abstinence drives persistent drug seeking
Authors: Kohtz Amy S. , Zhao Joshua , Aston-Jones Gary
Published: March 2024

The initiation of abstinence after chronic drug self-administration is a stressful event. Cocaine-seeking behavior on the first day of the absence of expected drug (extinction day 1, ED1) is reduced by blocking 5-HT signaling in dorsal hippocampus CA1 (CA1) in both male and female rats. We hypothesized that the experience of ED1 can substantially influence later relapse behavior, and that dorsal raphe serotonin (DR 5-HT) input to CA1 may be involved. We inhibited 5-HT1A/1B receptors (WAY100,635 plus GR127935), or DR input (chemogenetics), in CA1 on ED1 to test the role of this pathway on cocaine-seeking persistence 2wk later. We also inhibited 5-HT1A or 5-HT1B receptors in CA1 during conditioned place preference (CPP) for cocaine, to examine mechanisms involved in persistent effects of ED1 manipulations. Inhibition of DR inputs, or 5-HT1A/1B signaling, in CA1 decreased drug-seeking on ED1 and decreased cocaine-seeking 2wk later revealing that 5-HT signaling in CA1 during ED1 contributes to persistent drug-seeking during abstinence. In addition, 5-HT1B antagonism alone transiently decreased drug-associated memory performance when given prior to a conditioned place preference (CPP) test, whereas similar antagonism of 5-HT1A alone had no such effect but blocked CPP retrieval on a test 24h later. These CPP findings are consistent with prior work showing that DR inputs to CA1 augments recall of the drug-associated context and drug-seeking via 5-HT1B receptors and prevents consolidation of the updated non-drug context via 5-HT1A receptors. Thus, treatments that modulate 5-HT dependent memory mechanisms in CA1 during initial abstinence may facilitate later maintenance of abstinence.

Significance StatementOne of the most complex issues associated with substance use disorder (SUD) treatment is the development of strategies that assist in the initiation and maintenance of abstinence from drug taking. Herein, we show that the persistent propensity for cocaine-seeking during abstinence can be attenuated by 5-HT1A/5-HT1B receptor antagonists, or by inhibition of dorsal raphe signaling to dorsal hippocampus. Our results provide insight towards potential clinical applications for treatment of addiction in human populations.
Formation of Spatial Representations in Preschool Children with Disabilities
Authors:   Novosibirsk State Pedagogical University, Bolotskaya Ekaterina S.
Published: March 2024

The article presents a theoretical analysis and an experimental study of the formation of spatial representations in preschool children with disabilities. The difficulties associated with the development of spatial representations in preschool children with disabilities are analyzed. The description of the program for the formation of spatial representations in preschool children with disabilities is given. It is based on the author's correctional and developmental program N. Ya. Semago «Program for the formation of spatial representations in children of preschool and primary school age». The program for the formation of elementary mathematical representations in preschoolers with disabilities in the conditions of a preschool educational organization in a combined orientation group, in children of the experimental group, has effectively manifested itself in the development of such indicators of the formation of spatial representations as «Spatial analysis and synthesis», «Spatial representations at an impressive level», «Spatial representations at an expressive level (images)» and «Spatial representations at an expressive level (plot picture)».
Video Animasi Sebagai Media Pembelajaran pada Materi Hidrokarbon
Authors: Dheadema Sara Amareta , Muharini Rini , Rasmawan Rahmat , Enawaty Eny , Lestari Ira
Published: March 2024

Penelitian ini dilakukan dengan tujuan menentukan tingkat kelayakan serta respon peserta didik mengenai media video pembelajaran animasi pada materi hidrokarbon. Metode penelitian yang diterapkan adalah Research and Development (RD) dengan model ADDIE mencakup tahap Analyze, Design dan Development . Subjek penelitian ini yaitu media pembelajaran video animasi pada materi hidrokarbon. Teknik pengumpulan data yang diterapkan adalah pengukuran dan komunikasi tidak langsung. Alat pengumpul data menggunakan lembar penilaian kelayakan dan angket respon yang diukur menggunakan skala likert. Penilaian kelayakan media pembelajaran video animasi pada materi hidrokarbon memperoleh hasil sangat layak dengan persentase 96,67% pada aspek materi dan 100% pada aspek media. Hasil uji respon peserta didik memperoleh hasil sangat baik dengan persentase pada uji coba perorangan, uji coba kelompok kecil dan uji coba lapangan berturut-turut sebesar 88,33%, 86,14% dan 89,57%. Dengan demikian, media pembelajaran video animasi pada materi hidrokarbon yang dihasilkan dapat diimplementasikan sebagai media pembelajaran tambahan pada materi hidrokarbon.
The Effect of Using Problem Based Chemical Module Assisted by the Quartchem Card on Students Learning Outcomes and Creativity
Authors: Ningtyas Yanuar Ayu , Haryani Sri , Mursiti Sri
Published: March 2024

Following education in the 21st century, students must to having a lot of skills one of them is creativity. Fresh graduates of vocational high school required to have high creativity. Low students creativity being a problem that must be faced by the teacher. This study aims to find the effect of the problem-based chemistry module with the help of Quartchem cards on student learning outcomes and student achievement in chemistry learning on the subject of chemical bonding. Grade X motorcycle engineering which consist of three class used for population of this research. The sampling technique was carried out by cluster random sampling with class X TSM 3 as the experimental class and class X TSM 2 as the control class. Data collection was carried out by three methods, there are documentation method, test method, and observasion sheets method. The test method is used to measure students 'cognitive learning outcomes using the pre-test and post-test question instruments, while the observation sheet method is used to measure students' creativity using the student's creative product observation sheet. The test method is used to measure students 'cognitive learning outcomes using the pre-test and post-test question instruments, while the observation sheet method is used to measure students' creativity using the student's creative product observation sheet. The results showed that the experimental class learning outcomes average was 86.20 and the control class was 81.96 while the average creativity of the experimental class was 84.379 and the control class was 72.3. The results of data analysis with the t-test of the right side for student learning outcomes obtained tcount 2.212 and for creativity obtained tcount 11.94 with t table 1.67 shows that there is an effect of problem-based chemistry modules assisted by Quartchem cards on student learning outcomes and creativity.
Environmental Pollution Module Based on SETS with Islamic Value to Improve Student' Science Literacy
Authors: Nisa Khaerun , Indriyanti Dyah Rini , Parmin Parmin
Published: March 2024

This study aims to test the feasibility and effectiveness of the SETS-based environmental pollution module with Islamic values â€‹â€‹in improving students' scientific literacy. This type of research is research and development (R&D) that uses the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The research subjects to test the developed module were 39 students and three expert lecturers consisting of science material experts, Islamic religious material experts, and media experts. The research instruments were expert validation questionnaires, legibility questionnaires, gaps test questions, and scientific literacy test questions. The expert validation data analysis showed the average score on the feasibility aspects, which were considered very valid. The readability questionnaire analysis describes the module as having excellent readability. This result is in line with the results of the gap test analysis that the module is easy for students to understand. The N-gain values â€‹â€‹for the three aspects of scientific literacy are 0.46, 0.45, and 0.38 in the medium category, while the other element is 0.26 in the low class. Based on the analysis results, the environmental pollution module SETS-based with Islamic values â€‹â€‹was very suitable for learning. It was effective in improving three aspects of scientific literacy.
Analysis of Knowledge, Higher-Order Thinking Skills, and Compiling Evaluations for MA Biology Teachers in Pati Regency
Authors: Masru'ah Masru'ah , Bintari Siti Harnina , Alimah Siti
Published: March 2024

The thing that biology teachers must pay attention to in educating students to be able to think at higher-order is the mastery of the teachers' knowledge in biology material, the teachers' higher-order thinking skills, and their ability to develop HOTS in the learning process. When the teachers possess them, the teacher can create and develop an effective HOTS learning class. The purpose of this study was to analyse the ability of knowledge (factual, conceptual, procedural, and metacognitive), higher-order thinking (analysing, evaluating, and creating), and activities to design HOTS-oriented evaluations for Madrasah Aliyah teachers in Pati Regency. This study uses a mixed-method approach with a sequential explanation method. The research population includes members of the MA Biology MGMP in Pati Regency, totalling 35 people. The results showed that 1) MA teachers in Pati Regency had high-level knowledge and thinking skills in ecosystem concepts in the sufficient category, and 2) the ability to compile a HOTS-oriented biology learning evaluation was in a good category.
Development of Plantae Accompanied by Nash (Plantaenash) Learning Model Based-on Science Literacy to Foster Integrative Thinking Skills
Authors: Sa'idah Nailiya , Isnaeni Wiwi , Retnoningsih Amin
Published: March 2024

The learning model that combines nash (al-Quran and hadith) with Plantae subjects was developed by the teacher to train integrative thinking’s students. This research was aimed to develop a Plantae learning model accompanied by nash (Plantaenash) oriented to scientific literacy to foster students' integrative thinking skills. Integrative thinking skilis in the form of the ability to apply knowledge from various disciplines and contexts into real situations and the ability to analyze. This research method is Research and Development (R & D). The learning model was developed on the basis of needs analysis and particular literature reviews. The research product is a learning model with a teacher's guide sheet. Validity of the products was assessed by experts and teachers with an average score of 85.93% which was classified as "very valid". The results of the effectiveness of the learning model showed a moderate N-Gain value, namely 0.60. The results showed that the Plantae learning model accompanied by nash (Plantaenash) oriented to scientific literacy to foster students 'integrative thinking skills was very valid and effective to use to foster students' integrative thinking skills.
Utilization of LMS G-Site with Independent Learning Flow to Improve Critical Thinking Ability on Respiratory Materials
Authors: Parjiyo Parjiyo , Lisdiana Lisdiana , Saptono Sigit
Published: March 2024

Independent Learning is an educational process that guides students to develop according to their nature to achieve safety and happiness. One of the characteristics of Pancasila student profiles is critical thinking, in the hope that students can mobilize and develop physical and spiritual strength in accordance with nature, era, and society.This happens because education does not provide the widest possible space for students. There needs to be a LMS G-Site with Independent Learning Flow to improve critical thinking skills. This study aims to analyze the use of the LMS G-Site with the Independent Learning flow to improve the critical thinking skills of high school students on the subject of human respiration. This study is conducted using Research and Development (R&D) model. The research design was carried out using the ADDIE development research design. The characteristic of LMS-G-Site is that there is an Independent Learning flow where in each flow, materials, learning videos and tasksin differentiated learning are provided. The use of the LMS G-Site with Independent Learning Flow is reflected in the post-test score (90.08%) which is higher than the pre-test score (63.83%) and the N-gain test result is 76% in the high category. As for student learning outcomes based on assignments as much as 80.43% of students got an assignment score in the very good category and as many as 19.57% students got an assignment score in the good category. Thus the LMS-G-Site with Independent Learning Flow can be used as an alternative to improve students' critical thinking skills based on knowledge and students’ skills in differentiated learning aspects.
The Use of Android Based M-Learning toward Understanding Concept on Motion System Subject
Authors: Alimiah Umi Syahadah , Mariana Aditya , Linuwih Suharto
Published: March 2024

Education on 4.1 era are much using the technological advances on Information and communication field. Internet technology is one of technology that allows everyone to do everywhere and anywhere learning or can be called as mobile learning. Learning by using mobile learning can support the development of education. At this time, students are required not only to produce high scores but also to understand the subject matter that has been taught, so that, it can be implemented in solving problems for everyday life. On the other hand, Students are required to be able to solve a problem with toughness. Therefore, students must have a theoretical foundation or concept that is in line with the facts and to create mature decisions. In sum to make the students to become people who always want to learn and learn.The purpose of this study was to analyze the effect of using M-learning (mobile motion) on students’ understanding toward Motion System subject matter on XI Science Class. This study uses the Research and Development (RnD) design and the the technique used is a one shoot case study. The research was conducted at SMAN I Sendang Agung with 57 students as the research subject whom divided into 2 classes. The results of the study are as follows: (1) on the subject scoring by subject experts 84, 45% was obtained and 85.33% with very good criteria, and the scoring by media experts 85.49% was obtained and 89.91% with very good criteria so that the media confirmed valid. The score which obtained from students who have used M-Learning Application and then answer the understanding concept questions were obtained an average score 95.7 after being analyzed based on the predetermined Minimum Completeness Criteria (KKM). The specified KKM value is 80. The result show that 94.73% students passed with the very high category. Therefore, it can be state that the use of m-learning (mobile motion) is effective on students understanding concepts.
Android Based Module Development with Project- Based Learning Model on Immune System Materials to Improve Critical Thinking and Digital Literature Skills
Authors: Syarofatin Ririn Hamidatus , Isnaeni Wiwi , Alimah Siti
Published: March 2024

Critical thinking skills and digital literacy are indispensable in 21st-century life. These two skills can be trained through a learning process that uses an Android-based module with a Project Based Learning model. This study aims to analyse the feasibility and effectiveness of android-based modules to improve critical thinking skills and digital literacy. This research is a research development or Research and Development (R&D). The development in this study uses the ADDIE model which consists of five stages, namely Analysis, Design, Develop, Implementation, and Evaluation. The data in this study are module validity, critical thinking skills, and digital literacy. The instrument used in this study consisted of a module validation sheet to measure the feasibility of the module, reasonable multiple-choice test questions to measure critical thinking skills, and an observation sheet to measure digital literacy. The results showed that: 1) the module was declared very valid with an average value of 86.35; 2) the module is declared effective in improving critical thinking skills which are indicated by the N-Gain value of 0.47 with moderate criteria; and 3) the module is declared effective in increasing digital literacy as indicated by the N-Gain value of 0.56 with moderate criteria.
Development of a Digital Module for Classification of Materials and Its Changes Topic to Improve the Multi-Representation Ability of Junior High School Students
Authors: Hanifa Deska Aisyia , Cahyono Edy , Haryani Sri
Published: March 2024

Multi-representation ability is one of the abilities that must be possessed by students, especially in science subjects to be able to understand the topics, at the chemistry level, multirepresentation abilities are divided into three, they are macroscopic, submicroscopic, and symbolic abilities. This study aims to develop a digital module for the classification of the change topics to improve the multi-representation ability of junior high school students. This research method follows development research (R&D) with the ADDIE model (analysis, define, design, develop, evaluation) with a sample of 100 class VII students at SMP Negeri 1 Kedungjati and SMP Negeri 2 Kedungjati in April 2022. The method of data collection by observation, interviews, and documentation, for data collection instruments with a questionnaire sheet. Data analysis techniques include questionnaire validity test, question validity test, questionnaire reliability test, question reliability test, digital module feasibility test, digital module practicality test and digital module effectiveness test. The conclusion of this study was that a digital module of material classification and its changes were developed based on multi-representation for class VII students whose feasibility, practicality and application could increase the classical completeness of the test, the average test scores obtained by students, and increase the multi-representation ability of students.
Analysis of the STEM-Based Blended Project Based Learning Model to Improve Students' Science Literacy
Authors: Kurniasari Ris , Ridho Saiful , Indriyanti Dyah Rini
Published: March 2024

The purpose of the study was to analyze the application of the STEM-based Blended Project Based Learning model in improving scientific literacy skills and student learning activities. This research is a Research and Development (R&D), the product developed is a STEM-based blended project based learning model contained in the Syllabus, Learning Implementation Plan, evaluation tools, and Student Worksheets. The research design used One group pretest-posttest design. Data were collected using test and non-test methods, to measure aspects of scientific literacy skills and student activities in learning. The research subject is grade of VII SMP 1 Mejobo Kudus.The data analysis technique was carried out by descriptive analysis and inferential statistics (N-gain test). The results of the validation of the STEM-Based Blended Project Based Learning model for environmental pollution materials developed obtained valid criteria for use in learning. Characteristics STEM-based blended project-based learning model developed based on six main pillars, namely curriculum centered, contextual, real problem-based, constructive investigation, realistic projects and student autonomy. Application STEM-based blended project-based learning model meet the eligibility criteria. This is indicated by the average result of the classical science literacy test is 70.11 and the proportion of classical learning completeness meets 75 out of 105 complete KKM 70, and the average N-gain achievement is 0.40 in the medium category. The results of the analysis of the observation of student learning activities obtained the highest score or percentage, namely 71.90% in the good category. Student response to implementation STEM-based blended project-based learning model received a positive response from students with a mean score of 72.30 with the criteria of "agree".
Science Literacy Ability of High School Students in the Integration of Steam Learning with Mind Mapping Techniques on Virus Materials
Authors: Rochmah Aulia Afia , Marianti Aditya , Martuti Nana Kariada Tri
Published: March 2024

STEAM learning provides opportunities for students to apply science as a body of knowledge, a way of investigating, a way of thinking, and the interaction of science, technology and society. This study aims to improve the scientific literacy skills of class X students through the integration of STEAM learning using the mind mapping technique on viruses. This research is a pre-experimental design pre-test and post-test applied to 10th grade students of senior high school using random sampling technique. A total of 75 students from 3 different classes were accepted as participants and treated for pre-test and post-test. The instruments used to collect data were multiple choice test designs and essays based on indicators of scientific literacy ability. This study provides an explanation of the application of STEAM learning with mind mapping techniques to viral material to empower students' scientific literacy abilities. The application of STEAM learning has proven to be effective in empowering students' scientific literacy skills from low to high levels.
Developing E-Module Material on the Digestive System in Animals to Improve Students' Critical Thinking Ability and Independence
Authors: Faridah Indah , Saptono Sigit , Isnaeni Wiwi
Published: March 2024

The potential that must be developed and formed in tertiary institutions is the ability to think critically and be independent. In addition, equalization of learning outcomes through education at the KKNI level (Indonesian National Qualifications Framework) which states that students graduating from diploma 4 or undergraduate programs are equivalent to level six, where graduates are expected to have logical, critical thinking and are expected to be able to demonstrate independent, quality, and measurable performance. This study aims to analyze the validity of the e-module, test the effectiveness of the e-module in increasing critical thinking skills and independence in learning animal physiology from the digestive system material, and examine student responses related to the e-module. This study uses the 4-D Thiagarajan model (Define, Design, Develop and Disseminate). Based on the results of the recapitulation of the e-module assessment by the material and media expert validator, it was stated that the e-module on the digestive systems of animals is very suitable for use in learning. The effectiveness of the digestive system e-module in animals related to the ability to think critically and independently before and after using the digestive system e-module experienced an increase in critical thinking skills and independence in the moderate category. The results of the observation data on student independence in learning are very good. Student responses to the use of e-modules as learning media can make it easier for students to understand learning material, especially material about the digestive system.
Eye Tracking Trends in Chemistry Learning: Bibliometric Study 2018-2023 on Google Scholar with VOSviewer and Pivot Table
Authors: Muna Khairiatul , Bahit Muhammad
Published: March 2024

The development of research topics in the field of eye tracking has become a good trend at the international level because eye tracking is not only used in the fields of health or psychology but can also be used in education, including chemistry and science learning. This research aims to look at trends and updates on the topic of eye tracking in chemistry learning so that gaps and research opportunities can be found. This research uses bibliometric methods with articles collected from Google Scholar and VOSviewer software is used to analyze and visualize the relationship of various elements in the dataset. From the results of the analysis, information was obtained: (1) the development of eye tracking publications in the context of learning chemistry, science and pure chemistry experienced fluctuations in the publication timeframe 2018-2023; (2) the publisher that publishes a lot of eye-tracking literature is Elsavier; (3) United States is the country with the most authors; (4) the journal that receives the most eye-tracking articles is Computers & Education; (5) It is known that 83.5% of eye tracking articles are published in Q1-Q3 journals; (6) authors who have conducted a lot of research on the topic of eye tracking are "Sigfredo Fuentez, Claudia Gonzalez Viejo and Richard E. Mayer"; (7) There are 162 keywords divided into 19 clusters; ; (8) "eye movements, eye tracking and virtual reality" are keywords that appear frequently; (9) Eye tracking research topics in chemistry learning that are still little researched are "drawing, learning processes, stem content knowledge, visual spatial content, gaze tracking, visual problems, perceptual learning". This research also found trends as well as research gaps and opportunities related to the topic of eye tracking in chemistry, science and pure chemistry learning
Pre-Service Teachers’ Conceptual Understanding and Retention When Taught Osmosis Using Group Discussions
Authors: Kibirige Israel
Published: March 2024

The effect of Group Discussions (GD) on pre-service teachers taught Osmosis was investigated using a quasi-experimental design with pre-and post-tests. Ninety-four pre-service teachers (N=47) for the Experimental Group (EG) taught using GD, and (N=47) for the Control Group (CG) were taught using the Traditional Approach (TA). Results from post-tests show EG performed better than CG, as indicated by Analysis of Covariance (ANCOVA), p < .05, suggesting that GD improved conceptual understanding. A Mann-Whitney U-test shows no significant differences in performance between males and females in EG, implying GD favoured both genders. In addition, EG retention was higher than CG when tested after an extended period. Thus, the results show that GD improves pre-service teachers’ conceptual understanding and retention. The implication for educators is that the use of GD in teaching biology improves pre-service teachers’ conceptual understanding of Osmosis, and these results have far-reaching implications in teacher education.
Reservoir Characterization Using Seismic Inversion Based on Sparse Layer Reflectivity and Hybrid Genetic Algorithms: A Comparative Case Study of Blackfoot, Canada
Authors: Verma Nitin , Kant Ravi , Singh Raghav , Maurya Satya P. , Hema Gopal , Singh Ajay P. , Singh Kumar H.
Published: March 2024

This research paper introduces a comparative case study on reservoir characterization through seismic inversion techniques. The study specifically explores sparse layer reflectivity and a hybrid approach involving genetic algorithms and pattern search. The research assesses the effectiveness of these methodologies in delineating subsurface properties, with a particular focus on acoustic impedance. Through meticulous analysis, the paper aims to identify the strengths and limitations of each method, considering factors such as parameter estimation precision, computational efficiency, and adaptability to complex geological structures. The findings contribute valuable insights for selecting optimal seismic inversion techniques in reservoir characterization, advancing our understanding of how the integration of sparse layer reflectivity and hybrid genetic algorithms can enhance subsurface imaging accuracy and reliability. The results obtained from our inversion process significantly enhance the interpretation of seismic data by providing detailed insights into the subsurface. Both the sparse layer reflectivity (SLR) and hybrid genetic algorithm (HGA) algorithms have exhibited outstanding performance when applied to real datasets. The inverted impedance section reveals notable low acoustic impedance ranging from 8000 to 8500 m/s g/cc. This distinct zone, identified as a reservoir (sand channel), is located within the time interval of 1040–1065 ms. Our observations indicate that HGA demonstrates superior correlation results not only in the vicinity of well locations but also over a broader spatial range, suggesting its potential to provide higher-resolution outcomes compared to SLR.
On stochastic differential equations driven by skew stable processes
Authors: Pragarauskas Henrikas
Published: March 2024

There is not abstract.
On unbounded solutions of the first order ordinary differential equations
Authors: Gudynas Gintautas
Published: March 2024

The article is concerned with Cauchy problem Gx(x, ξ) + H (x, G(x, ξ)) = 0,G(ξ, ξ)= + ∞Let H(x, y), Hy(x,y) ∈ C(R2) and H(x, y) ≻ a1 |y|1+a +a2 where a1, a2 ≻ 0. Then there exists the unique solution G(x, ξ) of Cauchy problem and it is general solution of this equation.
On simplification of first line partial derivatives equation system solution
Authors: Jurgaitis Donatas
Published: March 2024

In this paper it has been analyzed first line partial derivatives system, the line of which strongly degenerates. Transformation has been determined, which simplifies the system, i.e., the main matrix of a new system coefficients distinguish characteristics, that all matrix elements over or under main diagonal (except one) asymptotically equal zero.
Development of computer science studies at the Faculty of Mathematics and Informatics of the Vilnius University
Authors: Norgėla Stanislovas
Published: March 2024

There is not abstract.
What is simple but exciting mathematical problem?
Authors: Kašuba Romualdas
Published: March 2024

In the paper some methods and ideas concerning the solving of non-formal mathematical prob­lems are discussed and investigated.
Le système d'évaluation, les examens et les connaissances en mathématiques
Authors: Urbonas Algimantas Pranas
Published: March 2024

On étudie les systèmes des évaluations ainsi que le niveau des connaissances en mathématiques en Lithuanie.
Application of finite-difference methods to parameter identification of agroecological models
Authors: Juščenko Natalija , Denisov Vitalijus
Published: March 2024

A typical parameter identification problem arisen in agroecological modeling is described and a finite difference method to solve an appropriate inverse problem is proposed. The method sup­poses the direct solution of an initial-boundary problem by finite difference scheme and then uses a non-linear optimization routine for parameter estimation. The derived recurrent formulas allow the accumulation of values of gradient and Hessian matrices while solving the direct problem. The software algorithm is described and some numerical results are given for the particular soil heat transfer parameter estimation exercise using the field treatment data collected at the Lithuanian Institute of Agriculture.
Nash equilibria in the context of convex sets
Authors: Sūdžiūtė Daina
Published: March 2024

Nash equilibria (α, β),  α > O, β > O, are investigated in bimatrix (3 x 3) game. Necessary and sufficient conditions for existing of such Nash equilibria are obtained (in theorems 4 and 8), and the algorithms for calculating them too. Some ideas of convex analysis are employed.
The mathematical model of the menstrual cycle with time delay depending on the researched function
Authors: Grigolienė Rasa , Pridotkas Gintaras , Bučys Kostas , Švitra Donatas
Published: March 2024

There is not abstarct.
Asymptotical investigation of extreme terms of the variational series
Authors: Aksomaitis Algimantas
Published: March 2024

In asymptotics of extreme terms of the variational series is presented. The volume of the sample is random and normalization or nonlinear.
Fluoridated food on preventing dental caries in Latin American and Caribbean children and adolescents: a systematic review
Authors: -Rocha Fanny Petermann , Celis Andrés , Michea María Angélica , Toro Felipe Diaz -
Published: March 2024

Dental caries is a significant global public health challenge, particularly among children and adolescents. It affects individuals' quality of life and can lead to various adverse outcomes, including pain, infection, and impaired school performance. Fluoride has been widely recognized as a key component in oral health improvement programs due to its ability to prevent tooth demineralization and promote remineralization. This systematic review aimed to evaluate the existing literature on the effectiveness of fluoridated food interventions in preventing dental caries in Latin American and Caribbean children and adolescents. The study focuses on this specific region, which faces unique challenges such as limited access to dental care services, socioeconomic inequalities, and cultural practices that may influence oral hygiene and dietary habits. The review follows the Preferred Reporting Items for Systematic Review and Meta-analyses (PRISMA) guidelines. A comprehensive search was conducted in multiple databases, including EMBASE, MEDLINE, Scielo, and Web of Science. The search strategy utilized relevant MeSH terms and Boolean phrases related to fluoridated food interventions and dental caries in children aged 12 years and younger. After screening the articles based on predetermined inclusion criteria, no study met the eligibility criteria for inclusion in the systematic review. Overall, the systematic review highlights the absence of high-quality available evidence specifically focused on the effectiveness of fluoridated food interventions on children and adolescents of the Latin American and the Caribbean, underscoring the importance of conducting further studies to inform evidence-based decisions regarding public health policies, resource allocation, and oral health promotion strategies in this population.