bluuebunny/crossref_metadata_2025 huggingface dataset:
A Systematic Review of Passing Fit Testing of the Respirators/ Masks Used During the COVID-19 Pandemic: Part 1-Quantitative Fit Test Procedures
Authors: Fakherpour Anahita , Jahangiri Mehdi , Jansz Janis
Published: March 2023

Background: There has been a strong demand for N95 filtering facepiece
respirators and surgical masks during respiratory infection pandemics,
particularly for the frontline healthcare workers who are at risk of
high exposure to biological hazards and for the patients seeking care
who may be potentially transmitting the respiratory viruses through air.
Respirators and masks are pivotal to meet the requirements of filtration
efficiency and fitting characteristics for the users’ protection.
Objective: The goals of this study were to systematically review the fit
testing passing rates and identify the factors influencing the fitting
characteristics. Methods Potentially relevant studies were identified
using PubMed, Scopus, Web of Science, Science Direct, one scientific
website (cdc.gov), and one scientific journal (ISRP.com) during the
COVID-19 pandemic from February 5, 2020 to January 2, 2023. Meantime,
the gray literature search was performed. Results: A number of studies
conducted regarding the fit testing showed that low proportions of
passing quantitative fit testing among the studied masks or respirators.
Factors such brand, style, and gender were found to be influenced the
respirator fit testing. Conclusion: This systematic review supports the
importance of optimal fit testing for the healthcare workers with
high-risk procedures. Manufacturers supply a variety of the mask/
respirator brands, models, styles, and sizes to ensure the expected
respiratory protection for the end-users. The proper donning and doffing
and reliable fit testing are other affective strategies for improving
fitting. Some modifications / substitutions on components of fit testing
procedures could be considered during pandemics of respiratory
infections.
Mitigation of transient torque reversals in indirect drive wind turbine drivetrains
Authors: Sarkar Saptarshi , Johansson Håkan , Berbyuk Viktor
Published: March 2023

Bearing failure in wind turbine gearboxes is one of the significant
sources of downtime. While it is well known that bearing failures cause
the largest downtime, the failure cause(s) is often elusive. The
bearings are designed to satisfy their Rolling Contact Fatigue (RCF)
life. However, they often undergo sudden and rapid failure within a few
years of operation. It is well known that these premature failures are
attributed to different types of surface damage. In that regard,
transient torque reversals (TTRs) in the drivetrain have emerged as one
of the primary triggers of surface damage, as explained in this paper.
The risk associated with TTRs motivates the need to mitigate TTRs
arising in the drivetrain due to various transient events. This paper
investigates three TTR mitigation methods. First, two existing devices,
namely, the torsional tuned mass damper and the asymmetric torque
limiter, are studied. Then, a novel idea of open-loop high-speed shaft
mechanical brake control is proposed. The results show that while the
torsional tuned mass damper and the asymmetric torque limiter can
improve the torsional vibration characteristics of the drivetrain, they
cannot mitigate TTRs in terms of eliminating the bearing slip risk
associated with TTRs. However, the novel approach proposed here can
mitigate TTRs both in terms of improving the torque characteristic in
the high-speed shaft and reducing the risk of bearing slip. Furthermore,
the control method is capable of mitigating TTRs with the mechanical
limitations of a pneumatic actuator in terms of bandwidth and initial
dead time.
Metals and Plastic Recycling in Maldives
Authors: Di Mario Luca , Von Kories Juergen , Haikal Mohammed
Published: March 2023

This working paper shows how Maldives can boost recycling to strengthen its solid waste management strategy, protect its blue ocean economy, and create green business opportunities to support its long-term sustainable growth. Estimating under 2 percent of plastic waste is recycled in the island nation, it outlines how factors including high costs, inefficient collection efforts, and a lack of reprocessing facilities are hobbling recycling efforts. It recommends Maldives set up public-private partnerships with waste exporters and recyclers, incentivize domestic demand, and build a modern waste collection system to protect its environment and start the transition to a circular economy.
Refining the Definition of Stage 1 Type 1 Diabetes: An Ontology-Driven Analysis of the Heterogeneity of Multiple Islet Autoimmunity
Authors: Frohnert Brigitte I. , Ghalwash Mohamed , Li Ying , Ng Kenney , Dunne Jessica L. , Lundgren Markus , Hagopian William , Lou Olivia , Winkler Christiane , Toppari Jorma , Veijola Riitta , Anand Vibha
Published: March 2023

  

OBJECTIVE: To estimate risk of progression to stage 3 type 1 diabetes based on varying definition of multiple islet autoantibody positivity (mIA). 

RESEARCH DESIGN AND METHODS: T1DI is a combined prospective dataset of children from Finland, Germany, Sweden and USA who are at increased genetic risk for type 1 diabetes. Analysis included 16,709 infants-toddlers enrolled by age 2.5 years and comparison between groups using Kaplan-Meier survival analysis. 

RESULTS: Of 865 (5%) with mIA, 537 (62%) progressed to type 1 diabetes. The 15-year cumulative incidence of diabetes varied from most stringent definition (mIA/Persistent/2: ≥2 islet autoantibodies positive at the same visit with ≥2 antibodies persistent at next visit; 88%, [95% CI: 85-92%]) to least stringent (mIA/Any: positivity for two islet autoantibodies without co-occurring positivity or persistence; 18%, [5-40%]). Progression in mIA/Persistent/2 was significantly higher than all other groups (P<0.0001). Intermediate stringency definitions showed intermediate risk and were significantly different from mIA/Any (p<0.05); however, differences waned over 2-year follow-up among those who did not subsequently reach higher stringency. Among mIA/Persistent/2 individuals with 3 autoantibodies, loss of one autoantibody by 2-year follow-up was associated with accelerated progression. Age was significantly associated with time from seroconversion to mIA/Persistent/2 status and mIA to stage 3 type 1 diabetes.

CONCLUSIONS: The 15-year risk of progression to type 1 diabetes risk varies markedly from 18-88% based on stringency of mIA definition. While initial categorization identifies highest risk individuals, short-term follow-up over 2 years may help stratify evolving risk especially for those with less stringent definitions of mIA.
A Novel Algorithm for the Management of Inpatient COVID-19 Glucocorticoid-Induced Hyperglycemia
Authors: Karol Alexander B. , Viera Natalia , Ogyaadu Selassie J. , Brooks Danielle , Shah Nirali A. , Linker Anne S. , Lam David W. , Levy Carol J. , O’Malley Grenye
Published: March 2023

  

Hyperglycemia in hospitalized patients with coronavirus disease 2019 (COVID-19) is linked to increased morbidity and mortality. This article reports on a novel insulin titration protocol for the management of glucocorticoid-induced hyperglycemia in hospitalized patients with COVID-19. Sixty-five patients with COVID-19 and glucocorticoid-induced hyperglycemia admitted after the protocol implementation were matched 1:1 to patients admitted before the treatment protocol rollout for analysis. In a large, diverse health system, the protocol achieved reductions in hypoglycemic events without increasing hyperglycemia or insulin use.
Impact of overnight glucose on next-day functioning in adults with type 1 diabetes: An exploratory intensive longitudinal study
Authors: Pyatak Elizabeth A , Spruijt-Metz Donna , Schneider Stefan , Hernandez Raymond , Pham Loree T. , Hoogendoorn Claire J. , Peters Anne L , Crandall Jill , Jin Haomiao , Lee Pey-Jiuan , Gonzalez Jeffrey S.
Published: March 2023

  

Objective: While there is evidence that functioning, or ability to perform daily life activities, can be adversely influenced by type 1 diabetes, the impact of acute fluctuations in glucose levels on functioning is poorly understood. 

Research Design and Methods: Using dynamic structural equation modeling, we examined whether overnight glucose (CV, % time <70 mg/dL, % time >250 mg/dL) predicted 7 next-day functioning outcomes (mobile cognitive tasks, accelerometry-derived physical activity, self-reported activity participation) in adults with type 1 diabetes. We examined mediation, moderation, and whether short-term relationships were predictive of global patient-reported outcomes.

Results: Overall next-day functioning was significantly predicted from overnight CV (p=0.017) and % time >250 mg/dL (p=0.037). Pairwise tests indicated that higher CV was associated with poorer sustained attention (p=0.028) and lower engagement in demanding activities (p=0.028); time <70 mg/dL was associated with poorer sustained attention (p=0.007); and time >250 mg/dL was associated with more sedentary time (p=0.024). The impact of CV on sustained attention was partially mediated by sleep fragmentation. Individual differences in the effect of overnight time <70 mg/dL on sustained attention predicted global illness intrusiveness (p=0.016) and diabetes-related quality of life (p=0.036).

Conclusions: Overnight glucose predicts problems with objective and self-reported next-day functioning, and can adversely impact global patient-reported outcomes. These findings across diverse outcomes highlight the wide-ranging effects of glucose fluctuations on functioning in adults with type 1 diabetes.
Pengembangan Media Pembelajaran Penyajian Data Berbasis QR-Code Untuk Meningkatkan Hasil Belajar Siswa Kelas IV SD
Authors: Karisma Deni , Zainil Melva
Published: March 2023

This study aims at developing QR-Code-based data presentation learning media which are valid and practical to improve the learning outcomes of the fourth year elementary school students. This study used a research and development (R&D) model consisting of such stages as analysis, design, development, implementation, and evaluation. The subject of this study included 2 experts, 2 teachers and 26 students at class IV-B of SDN 15 Ulu Gadut, Padang. The instrument used in this study included expert validation sheets and questionnaires distributed to the teachers and students. The results indicate that (1) the use of QR-Code-based data presentation learning media to improve the learning outcomes of the fourth year elementary school students is valid according to the material expert and very valid according to the linguistic expert and media expert with the validity average of 95,41; (2) based on the response of the teachers and students, the use of QR-Code-based data presentation learning media to improve the learning outcomes of the fourth year elementary school students is very practical with the average of 95% and 88%.
Peningkatan Hasil Belajar Siswa pada Tematik Terpadu dengan Menggunakan Model Quantum Teaching di Sekolah Dasar
Authors: Susanti Sri , Miaz Yalvema
Published: March 2023

Describing the improvement of student learning outcomes using the Quantum Tecahing model in integrated thematic learning in grade IV elementary schools is the aim of this study. Integrated thematic learning is learning that uses themes in the learning process. This research method, using classroom action research methods with qualitative and quantitative approaches. Where this research was conducted on the fourth grade students of SDN 03 Pasaman, amounting to 20 people consisting of 12 male students and 8 female students. The results showed an increase in student learning outcomes in integrated thematic learning using the Quantum Tecahing model. From the average value of 73.85% in the first cycle to 87.95% in the second cycle.
Peningkatan Hasil Belajar Tematik menggunakan Model Discovery Learning di Kelas SD
Authors: Efrina Ressy , Lena Mai Sri
Published: March 2023

This study aims to explain the learning outcomes of students using the Discovery Learning model in thematic learning in class IV SD 13 Seberang, North Padang. This research is a class action that uses qualitative and quantitative approaches. The subjects of this study were the teacher as the observer, the researcher as a practitioner, and the fourth grade students of SDN 13 Seberang, North Padang, amounting to 21 people. The results of this study are: (1) The percentage of RPP observations has increased from 79% to 95% in each cycle. (2) The teacher aspect in the first cycle was 81.25%, increasing to 93.75% in the second cycle. (3) The aspect of students experienced an increase in percentage from 81.25% to 93.75%. (4) Student learning outcomes, in the first cycle the percentage value of 71.4% with category C to 95.2% in the SB category in the second cycle.
Peningkatan Proses Pembelajaran Tematik Terpadu menggunakan Model Discovery Learning di Sekolah Dasar
Authors: Saputri Yuditia , Miaz Yalvema
Published: March 2023

The purpose of this research is to describe an integrated thematic learning process improvement to the model of discovery learning in fourth grade elementary school 13 Batu Gadang Padang City. In this study applying PTK research using qualitative and quantitative approaches. Where this research was conducted on the fourth grade students of SDN 13 Batu Gadang, amounting to 29 people consisting of 16 male students and 13 female students. The results showed: a) the evaluation of the first cycle Learning Implementation Plan obtained an average of 78% (C), and in the second cycle increased to 93.75% (SB). b) Observations on the aspect of the first cycle teachers obtained an average of 79.7% (C) and in the second cycle increased to 90.6% (SB). c) Observations on aspects of the first cycle students obtained an average of 79.7% (C) and in the second cycle increased to 90.6% (SB). Thus the model of discovery learning can enhance the integrated thematic learning process in elementary school.
Peningkatan Proses Pembelajaran Tematik Terpadu dengan Model Problem Bassed Learning (PBL) Kelas IV SDN 14 Gadut Kabupaten Agam
Authors: Rahmadevi Triska , S Farida
Published: March 2023

This study aims to describe the increase in student learning results on thematic Integrated Learning Model using Problem Based Learning in class IV SDN 14 Gadut Kabupaten Agam. This research used a qualitative and quantitative approach. This type of research i.e. Research Action class (PTK). The subject of research is the grade IV SDN 03 Labuah Bukittinggi Feed as many as 16 students. Research conducted two cycles. The design of the research include, (1) planning, (2) implementation, (3) and (4) observation of the reflection. The results showed an increase in: a) the RPP cycle I 85.93% Cycle II (B) 93,75% (SB) b) implementation on aspect of teacher cycle I 85.71% (B), a cycle II 96,42% (SB) c) Implementation on aspect students cycle I 85.71% (B) and Cycle II 96,42% (SB) d) student learning outcomes s iklus I 74,5 Cycle (B), II (B) 84,84. Thus the model of Problem Based Learning can improve the learning results of integrated thematic grade IV SDN 14 Gadut Kabupaten Agam.
Peningkatan Proses Pembelajaran Tematik Terpadu Tema2 Sub Tema 3 menggunakan Pendekatan Saintifik Di Kelas V SDN 11 Tanjung Alai Kota Lubuk Sikaping
Authors: Riandi Taufik
Published: March 2023

This research is motivated by the phenomenon of the number of students looking less active in questioning, reasoning, teacher-centered learning, students seem not so enthusiastic in communicating the results of their work The scientific approach in integrated thematic learning has not been maximally implemented. This study aims to describe the improvement of the integrated thematic learning process by using a scientific approach in theme 2 in class V SDN 11 Tanjung Alai, Lubuk Sikaping City. This research is a classroom action research with qualitative and quantitative approaches. The subjects of this study were grade V students of SDN 11 Tanjung Alai Lubuk Sikaping who were registered in the 2018/2019 academic year with 22 students consisting of 10 male students and 12 female students. The research design consisted of planning, implementing, observing, and reflecting. The results revealed that the integrated thematic learning process using the Scientific Approach model in class V SDN 11 Tanjung Alai Lubuk Sikaping, Pasaman Regency, obtained an increase in the learning process. This can be seen from the aspect of the teacher in the first cycle of meeting 1 getting 69.64% with sufficient qualifications and 76.79% at meeting 2 with good qualifications, while in the student aspect meeting 1 obtained 69.23% with sufficient qualifications and 75% in meeting 2 with Good qualifications. Whereas in cycle 2 the assessment from the teacher aspect increased to 96.43% with Very Good qualifications, 96.15% with Very Good qualifications in the student aspect.
Pengaruh Model Kooperatif Tipe Talking Stick terhadap Hasil Belajar Tematik Terpadu Kelas V SD
Authors: Farika Ulfa , Indrawati Tin
Published: March 2023

The purpose of this study is to find out the effect of Cooperative Learning Model through Talking Stick on the integrated theatic learning outcomes of the fifth year elementary school students in Elementary School Cluster 4 in Padang Timur Sub-District, Padang. This study used a quasi-experimental design in the form of nonequivalent control group design. The sampling technique used was cluster random sampling. The sample of this study was the fifth year elemtary schol students in Elementary School Cluster 4 in Padang Timur Sub-District, Padang.18 students at Class VB of SDN 35 Parak Karakah were chosen as the experimental class, and 22 students of SDN 17Parak Karakah were chosen as the control class. The results of this study show that the average pretest score of the experimental class is 54,07, and the average pretest score of the control class is 54. Meanwhile, the average scores of the both the experimental class and control class are 84,07 and 64,94, respectively.furthermore, the results of the analysis of the hypothesis testing at a significance level of 5% are tcount>ttable (6.13 > 2,024), soit can be concluded that using Cooperative Learning Model through Talking Stick elementaryschool students in Elementary School Cluster 4 in Padang Timur Sub-District, Padang.
Penerapan Model Problem Based Learning (PBL) dalam Proses Belajar pada Pembelajaran Tematik Terpadu di Kelas IV SDN 29 Rantau Batu Pasar Punggasan Pessisir Selatan
Authors: Sutrada Erik , Sukma Elfia
Published: March 2023

This study aims to obtain a description of the implementation of the Problem Based Learning Model by the teacher in the learning process of the fourth grade students of SDN 29 Rantau Batu Pasar as seen from the PBL learning steps used by the teacher in the teaching and learning process, the obstacles in the implementation of the Problem Based Learning model. and the efforts made to overcome the obstacles in the Problem Based Learning model in the student learning process. This research is a descriptive study with a qualitative approach. The research subjects were fourth grade teachers and fourth grade students of SDN 29 Rantau Batu Pasar. Data collection techniques include observation, interviews and documentation. The analysis technique used in this research is a descriptive analysis model consisting of data collection, data organizing, data management, verification and interpretation of data, conclusions. Based on the results of the research that has been done, the results show that the Problem Based Learning Model is very effective. used in an integrated thematic learning process where the PBL Model is a learning model that involves students directly in solving problems and can solve the problems faced according to their knowledge and accompanied by logical reasons. And it is supported by several relevant studies which show that this PBL model is effective in an integrated thematic learning process.
Peningkatan Hasil Belajar pada Pembelajaran Tematik Terpadu dengan Model Kooperatif Numbered Heads Together (NHT)
Authors: Sari Devita , Hamimah Hamimah
Published: March 2023

This study aims to determine the improvement of student learning outcomes in integrated thematic learning with the cooperative model Numbered Heads Together (NHT) in class V SD Negeri 16 Kampung Nan VI, Lubuk Sikaping District. This type of research is classroom action research using qualitative and quantitative approaches. This study was a teacher (practitioner) and 20 students. The results showed an increase in a). RPP cycle I averaged 82.15% with Good qualifications (B) increased in cycle II 92.85% with Very Good qualifications (SB), b) Implementation in the teacher aspect of cycle I averaged 82.81% with qualifications Good (B) increased in Cycle II 93.75% with very good qualifications (SB). While the implementation of the aspects of students in cycle I averaged 81.25% with good qualifications (B) increased in Cycle II 93.75% with very qualifications  good (SB), c). Assessment of student learning outcomes in cycle I an average of 72.92 with sufficient qualifications (C) increased in cycle II 82.80 with good qualifications (B).
Pengaruh Model Discovery Learning terhadap Hasil Belajar Keliling dan Luas Bangun Datar di Kelas IV SD
Authors: Syafira Husni , Zainil Melva
Published: March 2023

This research is motivated by problems that occur in the field that have not been carried out active mathematics learning, fun and have not used the right learning model. This research is an experimental research that aims to give the influence of the Discovery Learning Model to the Learning Outcomes and Flat Build Area in Class IV SD. This type of research is Quasi Experiment. The population in this study is elementary school students who are in Cluster IX Koto Tangah District. Withdrawing this sample with Cluster Sampling. Samples were 60 people. Before determining the sample, prerequisite tests for normality and homogeneity are carried out. The instrument used was an objective test in the form of multiple choice. Based on the analysis of t-test data results with a significant level (0.05) obtained t count (3.933) and t table (1.67155) with t count> t table (3.933> 1.67155). So, Ha accepted that there was the influence of the Discovery Learning Model on the Learning Outcomes and Flat Build Area in Class IV SD IX Cluster Koto Tangah District.
Peningkatan Hasil Belajar Peserta Didik Menggunakan Model Cooperative Learning Tipe Two Stay Two Stray di Kelas V Sekolah Dasar
Authors: Putri Vianes Muliza , Indrawati Tin
Published: March 2023

The purpose of this research is to describe the improvement student learning outcomes of integrated thematic learning by using cooperative learning model tipe two stay two stray at Grade V SDN 10 sungai pasak. Type of the research is classroom action research  by using qualitative and quantitative approach. The subjects of the research were teacher and 20 grade V students. Therefore, the cooperative learning model tipe two stay two stray could improve the students learning outcomes of integrated thematic learning. The results of lesson plan observation on cycle I was 80.55%, and cycle II was 94.44%. The observation of teacher on cycle I was 79,69% and cycle II was 90.63%. While, the improvement of students aspect on cycle I was 76,58% and cycle II was 90,63%. While the average student learning outcomes in the knowledge aspect is 75.3 to 90.1, and in the skill aspect it gets an average of 71.66 to 86.67.The purpose of this research is to describe the improvement student learning outcomes of integrated thematic learning by using cooperative learning model tipe two stay two stray at Grade V SDN 10 sungai pasak. Type of the research is classroom action research  by using qualitative and quantitative approach. The subjects of the research were teacher and 20 grade V students. Therefore, the cooperative learning model tipe two stay two stray could improve the students learning outcomes of integrated thematic learning. The results of lesson plan observation on cycle I was 80.55%, and cycle II was 94.44%. The observation of teacher on cycle I was 79,69% and cycle II was 90.63%. While, the improvement of students aspect on cycle I was 76,58% and cycle II was 90,63%. While the average student learning outcomes in the knowledge aspect is 75.3 to 90.1, and in the skill aspect it gets an average of 71.66 to 86.67.
Pengaruh Model Discovery Learning terhadap Pemahaman Konsep Perkalian dan Pembagian Pecahan Kelas V SD
Authors: Rahma Aminatu , Masniladevi Masniladevi
Published: March 2023

One of the learning models that can be applied in mathematics learning is the Discovery Learning model. This study aims to determine the effect of the Discovery Learning model on understanding the concept of multiplication and division of fractions in grade V SD. This type of research is quantitative with Quasi Experiment Design with the type of Non-equivalent Control Group Design. The research subjects were fifth grade students of SDN 05 Maninjau, Tanjung Raya District. Based on the calculation of the t-test results data analysis with a significant level of 0.05 and dk = n1 + n2 - 2 = 17 + 20 - 2 = 35, obtained tcount (2.49) and t table (1.68957). So that tcount> ttable, where 2.49> 1.68975. Thus it can be concluded that there is an effect of the Discovery Learning model on understanding the concept of multiplication and division of fractions in grade V SD.
Peningkatan Hasil Belajar Siswa Pada Tematik Terpadu Menggunakan Model PBL Kelas IV SD
Authors: Mangshum Arifin , Yunisrul Yunisrul
Published: March 2023

This study aims to describe the increase in student learning results on thematic Integrated Learning Model using Problem Based Learning in class IV SDN 22 Koto Tangah Kabupaten Agam. This research used a qualitative and quantitative approach. This type of research i.e. Research Action class (PTK). The subject of research is the grade IV SDN 22 Koto Tangah Kabupaten Agam Feed as many as 20 students. Research conducted two cycles. The design of the research include, (1) planning, (2) implementation, (3) and (4) observation of the reflection. The results showed an increase in: a) the RPP cycle I 79,16% Cycle II (SB) 93,75% (SB) b) implementation on aspect of teacher cycle I 85.71% (SB), a cycle II 96,42% (SB) c) Implementation on aspect students cycle I 85.71% (B) and Cycle II 96,42% (SB) d) student learning outcomes Cycle I 74,07 (B), cycle II 85,5 (A). Thus the model of Problem Based Learning can improve the learning results of integrated thematic grade IV SDN 22 Koto Tangah Kabupaten Agam.
Peningkatan Hasil Belajar Peserta Didik Pada Tematik Terpadu Dengan Menggunakan Model PBL di Kelas IV SD
Authors: Khairi Abdul , Miaz Yalvema
Published: March 2023

This study aims to describe the increase in student learning results on thematic Integrated Learning Model using Problem Based Learning in class IV SDN 14 Gadut Tilatang Kamang. This research used a qualitative and quantitative approach. This type of research i.e. Research Action class (PTK). The subject of research is the grade IV SDN 14 Gadut Tilatang Kamang.  Feed as many as 20 students. Research conducted two cycles. The design of the research include, (1) planning, (2) implementation, (3) and (4) observation of the reflection. The results showed an increase in: a) the RPP cycle I 85,93%  (SB) Cycle II 93,75% (SB) b) implementation on aspect of teacher cycle I 84,71% (SB), a cycle II 96,42% (SB) c) Implementation on aspect students cycle I 85.71% (B) and Cycle II 96,42% (SB) d) student learning outcomes Cycle I 75,46 (B), cycle II 87 (A). Thus the model of Problem Based Learning can improve the learning results of integrated thematic grade IV SDN 14 Gadut Tilatang Kamang.
Peningkatan Proses Pembelajaran Tematik Terpadu dengan Model Number Head Together di Kelas IV SD
Authors: Wahyuni Ocha Tri , Hamimah Hamimah
Published: March 2023

This research is backed by reality in the field that shows low student involvement in the learning process. The purpose of this study is to describe the use of Number Head Together model to enhance the integrated thematic learning process IN class IV of SDN 23 Ujung Gurun. This type of research is class action research using qualitative and quantitative approaches. Subjects in this study were teachers (Observer), researchers (practitioners), and grade IV students of SDN 23 Ujung Gurun as many as 27 people. The results of cycle I research on RPP gained an average percentage value of 76,78% (C), increasing in cycle II to 85,71% (B). The implementation of cycle I on teacher activity earned an average percentage value of 78,12% (C), increasing in cycle II to 87,5% (B). The implementation of cycle I on student activity earns an average percentage value of 78,12% (C), increasing in cycle II to 85,71% (B). Thus, it can be concluded that The Number Head Together Learning model can enhance the integrated thematic learning process in elementary school
Implementasi Model Discovery Learning dalam Meningkatkan Proses Pembelajaran Tematik Terpadu Kelas IV Sekolah Dasar
Authors: Dwita Putri Syafna , Zuryanty Zuryanty
Published: March 2023

This research is motivated by integrated thematic learning that has not been well implemented, still in the process of being perfected. The purpose of this study, to improve the integrated thematic learning process using the Discovery Learning model. This type of research is classroom action research using qualitative and quantitative approaches. This research was conducted in the second semester of the 2019/2020 school year at SDN 22 Ujung Gurun Padang City. The results showed an increase in: (1) the learning plan that is cycle I gained a percentage of 81.25% (Good), cycle II obtained a percentage of 96.87% (Very Good). (2) the aspect of the first cycle teachers obtained a percentage of 86.94% (Good), the second cycle obtained a percentage of 96.875% (Very Good). (3) Aspects of students in cycle I obtained a percentage of 86.94% (Good), cycle II obtained a percentage of 96.875% (Very Good). (4) Knowledge and skill aspects of cycle I with an average of 81.07 increased in cycle II with an average of 88.19. It can be concluded that the Discovery Learning model can improve the integrated thematic learning process in Elementary Schools.
PENERAPAN MODEL INQUIRY LEARNING DALAM PEMBELAJARAN TEMATIK TERPADU DI KELAS III SEKOLAH DASAR (STUDI LITERATUR)
Authors: Yofamella Debby , Taufik Taufina
Published: March 2023

The purpose of this research is to describe the application of the Inquiry Learning model in integrated thematic learning based on several previous studies, which will be observed by how much is the improvements of student learning outcomes after the learning model is applied. This research is motived by the low student learning outcomes of the students in elementary school because of many teachers that still not applied an innovative learning model and the application of integrated thematic learning characteristics that are still not visible, teachers are still using the conventional teacher-centered learning models so that students are less active in the learning process. The inquiry learning model is the learning series activities which is  focused on the critical thinking and finding the answer by itself from the concerned problems. The method of this research is the study of literature or library research. By collecting 15 accredited journals that are relevant to the topic, then analyzed how great is the improvement of student learning outcomes after the Inquiry Learning method is applied. From the results of data analysis shows that the Inquiry Learning model is effective in improving student learning outcomes.
PENERAPAN MODEL DISCOVERY LEARNING (DL) DALAM PEMBELAJARAN TEMATIK TERPADU DI KELAS IV SEKOLAH DASAR (STUDI LITERATUR)
Authors: Mitra Yulia , Taufik Taufina
Published: March 2023

This study aims to re-analyze the use of discovery learning models in integrated thematic learning in elementary schools. The design of this study is Literature Review. A literature review study is a method used to collect data or sources related to a particular topic that can be obtained from various sources such as journals, books, internet, and other literature. The purpose of this study is to describe the application of the Discovery Learning (DL) model to integrated thematic learning in elementary schools. Data collection is done by using non-test that is by searching electronic journals through Google Scholar and study documentation in the library. From the research results 15 relevant articles show that the Discovery Learning model is effective in improving student learning outcomes. The key word used for journal research is Discovery Learning, integrated thematic. In this study, researchers used a literature study, first the researchers formulated the research problem, then proceeded to explore existing research relevant to analysis. From the research results 15 relevant articles show that the Discovery Learning (DL) learning model is effective in improving student learning outcomes.
Peningkatan Hasil Belajar Peserta didik Pada Pembelajaran Tematik Terpadu Menggunakan Model Think Pair ShareLearning Kelas IV SD
Authors: Hafizah Nicken , Zuardi Zuardi
Published: March 2023

This study aims to describe the improvement of student learning outcomes in Integrated thematic Learning using Discovery Learning model in class IV SDN 05 Koto Tangah Kabupaten Agam. This research used a qualitative and quantitative approach. This type of research i.e. Research Action class (PTK). The subject of research is the grade IV SDN 05 Koto Tangah Kabupaten Agam Feed as many as 20 students. Research conducted two cycles. The design of the research include, (1) planning, (2) implementation, (3) and (4) observation of the reflection. The results showed an increase in: a) the RPP cycle I 86,37 % (B Cycle II 95,45%  (SB)   implementation on aspect of teacher cycle I82,82% (B) , a cycle II 93,75% (SB) c) Implementation on aspect students cycle I % 82,82 % (B and Cycle II II 93,75%   (SB) student learning outcomes Cycle I 75 (B) cycle II 83 (B). Thus the model of Discovery Learning can improve the learning results of integrated thematic grade IV SDN 05 Koto Tangah Kabupaten Agam.
ngan Motivasi Belajar dengan Hasil Belajar Siswa pada Pembelajaran Tematik di Kelas IV Sekolah Dasar
Authors: Asmelia Sherly , Fitria Yanti
Published: March 2023

The research aim to know there is or no correlation motivation in learning with student learning outcomes in thematic learning of four grade of primary school on cluster two in subdistrict Enam Lingkung regency Padang Pariaman. This type of research is quantitative research with correlation research methods. The amount of sample is 26 students, four grade of primary school 16 Enam Lingkung. The result of the research there is positive correlation an significant students motivation in learning with student learning outcomes in thematic learning of four grade of primary school on cluster two in subdistrict Enam Lingkung regency Padang Pariaman. This was proven from rhitung = 0.533 > rtabel = 0.404, and significance value 0.000 < 0.005. which means that Ha is accepted and Ho is rejected  , so the hypothesis says "there is a correlation in learning motivation with student learning outcomes in thematic learning in of four grade of primary school on cluster two in subdistrict Enam Lingkung regency Padang Pariaman" accepted.
Peningkatan Hasil Belajar Peserta Didik dalam Pembelajaran Tematik Terpadu Menggunakan Model Discovery Learning Kelas IV SD
Authors: Kurnia Rahmi , Muhammadi Muhammadi
Published: March 2023

This Research aims to describe the improvement of integrated thematic learning outcomes by using Discovery Learning model in class IV SD Negeri 04 District paninggahan solok. Unitages Research Research class with qualitative and quantitative approaches. The study carried out two cycles. Research Data in the form of observation and test results. The body In this study is teacher and grade IV students. Research results of RPP cycle I 76, 56% (C), Cycle II 93, 75% (SB). The implementation of learning aspects of my teacher's cycle is 81, 26% (B), Cycle II 90, 6% (SB). Aspects of student Cycles I 81, 26% (B), Cycle II 90, 6% (SB). Student Learning Results Cycle I 66, 53, Cycle II to 87. It can be concluded in research that the Discovery Learning model can improve the results of integrated thematic Learning.
PENINGKATAN HASIL BELAJAR MATEMATIKA MENGGUNAKAN MODEL PROBLEM BASED LEARNING (PBL) DI KELAS IV SD
Authors: Amelia Minda Suci , Devi Masnila
Published: March 2023

This study aims to describe the application of the Problem Based Learning (PBL) model to improve learning outcomes on fraction material in grade IV elementary schools. This type of research is Classroom Action Research (PTK) using qualitative and quantitative approaches. The research subjects were 16 students in grade IV SD N 01 Ladang Laweh. The results showed an increase. In the first cycle, the RPP observation results were from 83.7% to 93% in the second cycle. Implementation in the aspects of teachers and students in cycle I 81.7% to 92% in cycle II. The average assessment of student learning outcomes in cycle I was 75.5% to 86.8% in cycle II.
PENINGKATAN HASIL BELAJAR SISWA MENGGUNAKAN MODEL NUMBERED HEAD TOGETHER (NHT) DI KELAS IV
Authors: Nurhasanah Rosy Kurnia , Yunisrul Yunisrul
Published: March 2023

This research aims to explain the results of students' learning in integrated thematic learning using a cooperative model of Numbered Head Together (NHT) type in grade IV of state primary school 30 Desa Baru. This research is a class action study (PTK) using a qualitative and quantitative approach. The subjects of this study were class teachers as observer, researchers as practitioners, and 20 grade IV students of state primary school 30 Desa Baru. The results of this study are: (1) The percentage of RPP assessments increased from 84.6% in cycle I to 94% in cycle II. (2) In the teacher aspect increased from 82.7% in cycle I to 93.7% in cycle II. (3) In the student aspect increased from 82.7% in cycle I to 93.7% in cycle II. (4) Study results in cycle I obtain a completion percentage of 45% to 90% in cycle II.
Implementasi Model Student Facilitator and Explaining pada Pembelajaran Tematik Terpadu di SD
Authors: Hajar Siti
Published: March 2023

This research aims to implement the use of the Student Facilitator and Explaining cooperative model in integrated thematic learning in elementary schools. And to see the effect on learning outcomes. This type of research is descriptive research with qualitative methods, because it is done to search for data and facts. After the data is collected then it is presented in the form of a sentence which is then drawn conclusions based on the facts seen. Based on the learning results obtained by the researcher, after conducting the research, it showed that of the total students, only 7% of students or 6 students had scores below the minimum completeness value. Meanwhile, the other 93% or 22 other people have high scores. With an average value of 89. From this it can be concluded that the Student Facilitator and Explaining learning model has a very good influence on learning outcomes. Supported by the use of the Student Facilitator and Explaining model of learning steps in the learning process.
Pengaruh Pendekatan Pendidikan Mate matika Realistik Indonesia (PMRI) Terhadap Hasil Belajar Penyajian Data di Kelas V Sekolah Dasar
Authors: Elhusna Syifa , Ahmad Syafri
Published: March 2023

This study aims to determine the effect of student learning outcomes on learning mathematics for data presentation material in class V of Elementary School for the 2019/2020 academic year. The population in this study were all elementary schools in the Cluster II of Lubuk Kilangan District, which consisted of 7 schools (3 schools were groups). The samples of this research were class V SDN 08 Padang Besi, totaling 28 people as the experimental class, and class V SDN 06 Padang Besi, totaling 30 people as the control class. The instrument used in this study was an objective test in the form of multiple choices. The data analysis technique used was the t-test. The results showed that the average score for the experimental class that applied learning with the Indonesian Realistic Mathematics Education (PMRI) approach was 86.7 higher than the average value for the control class that applied conventional learning was 73.2. This proves that there is a significant influence on student learning outcomes in mathematics learning in elementary schools using the Indonesian Realistic Mathematics Education approach.
Peningkatan Prestasi Belajar Matematika Menerapkan Pendekatan Contextual Teaching and Learning (CTL) di Kelas V SD
Authors: Elysa Yuli , Lena Mai Sri
Published: March 2023

The purpose of this study is to describe the implementation of the Contextual Teaching and Learning (CTL) approach in order to increase mathematics learning achievement on fraction division material in fifth grade SDN 04 Nanggalo. The type of research used is Classroom Action Research (PTK) by applying qualitative and quantitative approaches. The results of this study indicate an increase. The percentage acquisition in the first cycle RPP observation was 82.14% to 92.85% in the second cycle. The percentage acquisition in the implementation of learning activities in the teaching aspect of the first cycle was 83.33%, an increase of 94.44% in the second cycle. The percentage of learning activities in terms of students in the first cycle was 76.83%, an increase in the second cycle was 94.44%. Acquisition of student learning achievement in the first cycle 77.78 to 90.05 in the second cycle.
IDENTIFICATION OF GEOMORPHOLOGY AND LITOLOGY BASED ON ANALYSIS OF LANDSAT-8 SATELLITE IMAGES IN PADANG CITY
Authors: Ramadhan Dewi , Putri Srikandi
Published: March 2023

The application of remote sensing to obtain better quality and up to date maps is needs to be done through the utilization of lithology and geomorphology in mapping of Padang city. This study aims to obtain a lithological and geomorphological picture of the appearance of Landsat-8 OLI Composite 567 satellite imagery. The research method was carried out by image interpretation data preparation. The results showed the city of Padang has 2 units of landforms from visual interpretation, namely fluvial and denudational landforms. Lithology identification in Padang using geological imagery and maps as a reference succeeds to acquire geological and lithological units, namely: Alluvial Fan which is smooth texture, lowland topography, hue and color is bright, parallel river flow patterns, sparse vegetation, river area associations. Non-decomposed flow texture is rather rough, hilly topography, hue and color is dark, radial river flow patterns, dense vegetation, associated with forests. Andesite has a rather rough texture, highland topography, hue and color is dark, radial river flow patterns, dense vegetation, associated with mountainous terrain. Alluvial is found in coastal areas, lakes and sandy areas, fine texture, lowland topography, alongside large rivers with valley, has a bright color and hue, its flow patterns are parallel, sparse vegetation, river area associations. Hardened Crystal Tuff with a rather rough texture, topography in mountainous areas, hues and color is dark, radial river flow patterns, dense vegetation, hill area associations. Volcanic Rock has a rough texture, high terrain topography, has dark colors and hues, radial river flow patterns, has dense vegetation, and is associated with mountains.
ESTIMATION OF LAND SURFACE TEMPERATURE IN BUNGO DISTRICT USING THERMAL CHANNELS OF LANDSAT 8 IMAGES
Authors: Firstyandina Annisa , Febriandi Febriandi
Published: March 2023

The purpose of this study was to determine the land surface temperature in Bungo Regency using the Landsat 8 image thermal channel by carrying out three stages: (1) Mapping the comparison of vegetation density in 2016 and 2021 using the NDVI (Normalized Difference Vegetation Index) method. (2) Mapping land surface temperatures in 2016 and 2021 using the Land Surface Temperature method. (3) Knowing the relationship between LST and NDVI using the Correlation Person test. The results of the study explain the comparison of vegetation density using the Normalized Difference Vegetation Index (NDVI) method in 2016 and 2021 in Bungo Regency. In 2016 the classification is very dense with an area of ​​124,871 Ha, the classification dense with an area of ​​115,732 Ha, the classification medium with an area of ​​98,536 Ha, the classification is rare with an area of ​​71,920 Ha, and very rare classification with an area of ​​54,839 Ha. Whereas in 2021 the very dense classification will decrease to 117,216 Ha, the dense classification will decrease to 112,365 Ha, the moderate classification will decrease to 95,892 Ha, the rare classification will increase to 79,310 Ha, and the very rare classification will increase to 61,084.
UTILIZATION OF REMOTE SENSING IMAGES IN MAPPING SUSPENDED SOLID IN LAKE MANINJAU WEST SUMATRA PROVINCE
Authors: Ridho Ilham , Arief Dian Adhetya , Putri Sri Kandi
Published: March 2023

Remote sensing is generally defined as the technical art of obtaining information or data regarding the physical condition of an object or object, target, target or area and phenomenon without touching or direct contact with the object or target (Soenarmo, 2009). With remote sensing data, this research can easily see how the condition of the lake water. Based on these factors, efforts are needed to monitor the distribution of TSS in Lake Maninjau considering the importance of water potential to support various needs. In this study the classification was divided into 5 for the first class with concentration values of tss- 0 – 15 mg/L, 15 – 25 mg/L, 25 – 35 mg/L, TSS 35 – 80 mg/L, TSS > 80 mg/L. The result of in situ data processing is the lowest value is 8.2 mg/L and the highest is 72.2 mg/L. The Syarif Budhiman algorithm has the lowest at 8.14 mg/L and the highest at 40.04 mg/L. The lowest Parwati algorithm is 3.32 mg/L and the highest is 32.86 mg/L. The Guzman - Santaella algorithm has the lowest at 3.15 mg/L and the highest at 164.38 mg/L. The TSS concentrations in the alleged party and budhiman algorithms tend to have the same pattern as the TSS concentrations in the field, but there are several points with significant differences. The validation test shows that the Budhiman Algorithm (2004) has the smallest NMAE value between in situ data and image processing with a value of 14.4%.
DETERMINATION OF TH DYNAMICS OF THE FIELD AREA WITH FOOD SUPPORTUSING REMOTE SENSING IN SOLOK DISTRICT
Authors: Maulana Teguh Trivo , Syahar Fitriana
Published: March 2023

The availability of carrying capacity of food in an area is closely related to the availability of sufficient agricultural rice fields, from both sides they are very mutually supportive, so if the area of agricultural land is in an area, the availability of food in the area will also help reduce this problem. will have an impact on the food-carrying capacity of the people in the region. This study uses a quantitative descriptive approach using a supervised classification method using the SNI 7645 Classification. The data required are Landsat images from 2000, 2010 and 2020 . The data obtained from the results of image data processing is the occurrence of changes in the area of rice fields in Solok Regency in 2000, 2010 and 2020, where in 2000 the area of rice fields was 90,344, in 2010 the area of rice fields again was 80,452Ha, and in 2020 the area of rice fields continues to decrease to 75,750 Ha.