bluuebunny/crossref_metadata_2025 huggingface dataset:
Léon Petit, peintre et entomologiste
Authors: Fagot Jean , Bortels Jeannine
Published: October 2022

Une courte biographie de Léon Petit (Huy, Belgique) précède la présentation des données chorologiques pour les espèces de Chrysomelidae, Orsodacnidae et Megalopodidae, récoltées entre 1904 et 1964 dans différentes localités de Belgique ou de contrées proches. Un commentaire accompagne les espèces les plus intéressantes.
Les Chrysomelinae de la faune belge (Coleoptera Chrysomelidae), catalogue et atlas Entretiens sur les Chrysomelidae de Belgique et des régions limitrophes 14
Authors: Fagot Jean
Published: October 2022

Dans le cadre de la réalisation du catalogue des Chrysomelidae de Belgique, nous présentons les catalogue et atlas de la sous-famille des Chrysomelinae mis à jour à la date du 1er janvier 2022. Ce catalogue est adapté à la nomenclature récente et complété par une carte des occurrences connues de nous dans le pays. Un commentaire accompagne chaque espèce. Plusieurs espèces du genre Oreina Chevrolat 1837 et Sclerophaedon orbicularis (Suffrian 1851) sont citées de Belgique pour la première fois.
丹戎布拉大学师范教育学院汉语教育专业 2020 届学生学习口语课的问题分析
Authors: Sari Jana Unika , Thamrin Lily , Veronica Tjen
Published: October 2022

ABSTRACTSpeaking is a person's ability to say words to convey thoughts to others. Speaking is also a means of communication between social beings. In teaching and learning activities, one's ability to speak or convey ideas is also needed both with classmates and with the teacher. Teaching and learning process activities will not be separated from various learning problems. One of them relates to problems in the learning process of conversation courses. To understand the problem factors in the conversational course learning process for 2020 students at FKIP Tanjungpura University, the author uses quantitative research methods, namely research methods that use data analysis to find out the problem factors in the conversational course learning process. The results of the study stated that the problem in the learning process of conversational subjects faced by students was that students were afraid to answer questions from the teacher, students were often reluctant to express their opinions to their classmates during the discussion. Another factor of the problem in the learning process of conversational subjects is the mental attitude of students, namely panic, nervousness, fear and insecurity. Students often feel insecure to answer questions given by the teacher. The percentage of the problem factors in the learning process of thes conversation course are; Mastery of Language Competence 48.98%, Mental Attitude 60.26%, Interaction Relationship between Teachers and Students 63.60%, and Interaction Relations between Students and Students 62.50%.Keywords: Conversations, Learning Process, Problems
KOLERASI ANTARA MINAT DAN DISIPLIN DENGAN HASIL BELAJAR PEMBELAJARAN TEMATIK SISWA KELAS V SEKOLAH DASAR NEGERI 35 PONTIANAK SELATAN
Authors: Jas Wahyu Muhammad , Halidjah Siti , Pranata Rio
Published: October 2022

AbstractThis study means to inspect if there is a huge relationship among's advantage and discipline with topical learning results of 5th grade understudies at the 35 South Pontianak Elementary School. The strategy utilized in this study is a quantitative methodology as a connection study. This study utilized a populace of 109 understudies and an example of 35 understudies. Information assortment methods utilized in this exploration are backhanded correspondence procedures and specialized narrative investigations. The apparatuses used to gather information are polls and understudy learning results records. The results of the research conducted by students' interest in learning in thematic learning in class V Elementary School 35 South Pontianak, amounted to 68.19% included in the fairly good category and student learning amounted to 55.95 % fall into the poor category and the learning outcomes of fifth graders at the 35 South Pontianak State Elementary School have an average score of 74.67 in the fairly good category. Based on statistical analysis using the product moment correlation formula for calculating the correlation between interests and disciplines with understudy learning results in topical learning in class V Elementary School 35 South Pontianak, obtained r_count of 0.169, while r_table of 0.344, this means r_count < r_table or (( 0.169 < 0.344). From the calculation resultsit very well may be observed that there is no critical relationship among's advantage and discipline with understudy learning results in topical learning in class V Elementary School 35 South Pontianak, including in the very low category with a period of 0.0 - 0.199.Keywords: Correlation, Interest, Discipline, Learning Outcomes, And Thematic Learning.
KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA PADA MATERI KPK DAN FPB DI KELAS IV
Authors: Adhitya Ika Nur , Hamdani Hamdani , Suparjan Suparjan
Published: October 2022

This study aims to describe the ability of elementary school students insolving mathematical problems on the least common multiple and thegreatest common divisor material. The indicators used in this study referto polya problem solving, namely understanding the problem, making aplan, executing the plan and checking again. This research method appliesdescriptive qualitative design. The subjects of this study were students ofclass IV B Elementary School 24 Southeast Pontianak. Sources of data inthis study consisted of the results of mathematical problem solving abilitytests and interview data. The results showed that students with a high levelof ability and students with a moderate level of ability were able to writewhat they knew well. The abilities possessed make it easy to apply problemsolving based on polya step, especially in understanding problems, makingplans and checking back. The difficulties experienced by students are inthe third stage, namely carrying out the plan, students often writeincomplete answers and have difficulty in arithmetic operations.Keywords: Math Problem Solving Ability, Least Common Multiple andThe Greatest Common Divisor Materials
PENGARUH STATUS SOSIAL EKONOMI TERHADAP MOTIVASI BELAJAR SISWA SMA NEGERI 1 PULAU MAYA
Authors: Purnamasari Devi , Purwaningsih Endang , Warneri Warneri
Published: October 2022

This study aimed to determine: socio-economic status of parents’ students in SMAnegeri 1 Pulau Maya, learning motivation of students’ SMA Negeri 1 Pulau Maya,influence of socio-economic status of parents on learning motivation of students in SMANegeri 1 Pulau Maya. Research was quantitative research method with descriptivestudies of relationship. Sample were students of SMA Negeri 1 Pulau Maya usingProportioned Stratified Random Sampling technique, where number of samples takenproportionally based on class of 163 students. Retrieval data using questionnaire withlikert scale. Validity data were analyzed through correlation of Product Moment.Realibility instrument using Alfa cronbach's method. Results of validity instrumentgained 28 items about valid and 11 non-valid, reliability of instrument variable X was0,679 and variable Y was 0.782. Data analysis techniqued using descriptive analysisand simple linear regression. Results showed socio-economic status of parents’ studentscategorized low as 45,40%, learning motivation of students categorized high as41,40%, Value of tcount was greater than value of ttable(1,97481<19,531) and valueof Sig. smaller than probability value of 0.05 (0,000<0,05). So, Ha received and it wassaid that “There are significant Socio-Economic Status of Parents on LearningMotivation Students of SMA Negeri 1 Pulau Maya.Keywords: Socio-Economic Status, Learning Motivation
ANALISIS FAKTOR LINGKUNGAN KELUARGA PENYEBAB ANAK TIDAK MELANJUTKAN PENDIDIKAN DI DESA BENAWAI AGUNG
Authors: Yulianti Reni , Sikwan Agus , Ramadhan Iwan
Published: October 2022

AbstractThe purpose of this research in general is how family environmental factors cause children whoreceive free education to not continue their education in Benawai Agung Sukadana Village, NorthKayong Regency. This study uses a qualitative method with a descriptive approach. The datasources in this study were 3 parents of children who did not continue their education along with 3children who did not continue their education consisting of 1 person who did not continue to juniorhigh school and 2 people who did not continue to high school. The method used in the datacollection technique is the interview and observation method. Based on the results of the study,children did not continue their education, namely the way to educate children that was not rightand the relationship between parents and children was not harmonious. The family/homeatmosphere factor in observations and interviews was seen from the number of family membersand the number of dependents in the family, while the economic condition factor included the workof parents in terms of meeting the educational needs of children seen from the facilities providedby parents and parents' income in terms of how parents meet the educational needs of theirchildren.Keywords: Family Environment, Not Continuing Education
BENTUK DAN MAKNA PENAMAAN JENIS-JENIS PADI DALAM BAHASA BOKIDOH DAYAK JANGKANG
Authors: Een Fasifikus Rafael , Syahrani Agus , Jupitasari Mellisa
Published: October 2022

AbstractThe formulation of the problem in this study includes the form of words or phrases, lexical meanings, how to name rice in the Bokidoh Dayak Jangkang language, and the making of descriptive texts as teaching materials for seventh grade junior high school students. This study used descriptive qualitative method. Sources of data from native speakers are active rice farmers. The data obtained are in the form of words or phrases for the name of rice, the lexical meaning of rice varieties, and the method of naming each type of rice. Data collection techniques are interviews, recording, and recording. The data obtained are 41 types of rice, word forms totaling 33 total data in the form of monofermic nouns, phrase forms totaling 8 data for noun categories, lexical meaning based on phenotype. There are 6 ways of naming, namely 5 data for mentioning characteristics, 2 data based on the inventor and maker, 12 data for mentioning the place of origin, 15 data for similarity, 3 data for new plantings, and 4 data for definition. This research is associated with learning Indonesian in class VII SMP in semester 1 of the 2013 Curriculum as teacher enrichment material.Keyword: Bokidoh Language, Naming, Type of Rice
PENGEMBANGAN VIDEO PENDIDIKAN SEKSUAL SEBAGAI UPAYA EDUKASI DALAM MENCEGAH PELECEHAN SEKSUAL DI SEKOLAH DASAR
Authors: Maudi Nadelia , Halidjah Siti , Ghasya Dyoty Auliya Vilda
Published: October 2022

AbstractThis study aims to develop a sexual education video as an educational effort to prevent sexual harassment of students at Abdi Agape Elementary School, North Pontianak. The research method used is the research and development (RnD) method by adapting the Borg and Gall model with potential and problem steps, data collection, product design, design validation, design revision, product testing, and product revision. The data are quantitative data and qualitative data. Quantitative data were obtained from the results of the product assessment by the validator and the results of filling out the questionnaire responses to videos by teachers and students. Qualitative data were obtained from suggestions/comments by validators, teachers and students. Research instruments in the form of interviews and questionnaires. The level of validity of the video is based on the results of the assessment by media experts and material experts, while the response to the video is based on the results of responses by teachers and students. The results of the validation of sexual education videos obtained an average of 3,825. Based on the results of the research and discussion, it was concluded that sexual education videos had a level of validity in the "very valid" category.Keywords: Development, Education, Sexual Education, Sexual Harassment, Video
STUDI KASUS TENTANG MOTIVASI BELAJAR PADA ANAK USIA 5-6 TAHUN DI TAMAN KANAK-KANAK SUSTER PONTIANAK
Authors: Purwanti Ruslin Sri , Marmawi Marmawi , Lukmanulhakim Lukmanulhakim
Published: October 2022

AbstractThis study aims to determine: 1) the learning motivation of children aged 5-6 yearsat Sister Pontianak Kindergarten, 2) intrinsic motivation in learning in childrenaged 5-6 years at Sister Pontianak Kindergarten, 3) extrinsic motivation in study inchildren aged 5-6 years at the Pontianak Sisters Kindergarten. The researchmethod used is a qualitative method in the form of case study research. The datasources for this study were 3 children aged 5-6 years in class B2, class B2 teachersand parents of 3 students aged 5-6 years. Data collection techniques areobservation, interviews and documentation. The data collection tool used anobservation guide for children aged 5-6 years, an interview guide for children,teachers and parents and documentation. The data analysis technique uses thetheory of Miles and Huberman, namely data collection, data reduction, datapresentation and drawing conclusions. The results showed that the learningmotivation of B2 graders was not maximized because 2 of the 3 children studieddid not have the characteristics of children who had motivation to learn and only 1child had maximum learning motivation. The intrinsic motivation in learning in the3 children studied is still not optimal because 2 students have less intrinsicmotivation and 1 child has maximum intrinsic motivation. The extrinsic motivationin learning in the 3 children studied was maximal. The conclusion in this study isthat the learning motivation of children aged 5-6 years in class B2 TK SisterPontianak is still not optimal, intrinsic motivation in children's learning is notmaximized and extrinsic motivation in children's learning is maximized.Keyword : Intrinsic Motivation, Extrinsic, Learning
PENGEMBANGAN MEDIA INTERAKTIF BERBASIS MICROSOFT POWERPOINT KELAS IV SEKOLAH DASAR NEGERI 29 PONTIANAK KOTA
Authors: Febrianus Albinus , Kartono Kartono , Vilda Ghasya Dyoty Auliya
Published: October 2022

AbstractThis study aims to produce a product in the form of a validated powerpoint-based learning media. The research method used is research anddevelopment (R&D) by adapting the Borg and Gall design developmentmodel. The data sources of this research are the results of observations,interviews, expert validation, student responses, and documentationduring the use of powerpoint-based learning media. Data collectiontechniques in this study were observation, interviews and questionnaires.The results showed that the powerpoint-based learning media developmentprocess had gone through 7 research steps, namely potential andproblems, data collection, product design, product validation, revision,trial, and final product revision. The feasibility level of the developedlearning media is very good in terms of design and material aspects withan average value of 3.76 and 3.77, and the results of product trials arevery good with an average value of 3.58.Keywords: Development, Microsoft Powerpoint-based Learning Media
PERISTILAHAN DALAM PENGOBATAN TRADISIONAL SUKU DAYAK KENDAWANGAN KECAMATAN MARAU KABUPATEN KETAPANG
Authors: Artanti Priatna Sari , Syahrani Agus , Jupitasari Mellisa
Published: October 2022

ABSTRACTThis study aimed to describe the terminology of Dayak Kendawangan traditional medication, describe a lexical and cultural meaning, and produce learning text materials about the traditional medication at the Senior High Shcool (SMA) level. The form of research used is qualitative with descriptive method. The data were the words from respondents that related to clause and phrase used in Dayak Kendawangan traditional medication. Data collection techniques used were interviews, one-to-one interviews, recording audio, note-taking techniques, and taking notes techniques. The result shows that there were 69 terminologies which clarified as clauses and phrases. In Dayak Kendawangan traditional medication, there were 42 data of medium terminology and 27 data of medicament terminology. There are 23 data classified as the from of monomorphemic and 46 data classified as phrases. There are 69 data that belong to lexical meaning and 69 data that belong to cultural meaning of terminology of Dayak Kendawangan traditional medication lexical meaning. This research can produce learning text materials about the traditional medication at the Senior High Shcool (SMA) level and text of the observation results of traditional medicine of the Dayak Kendawangan tribe.Keywords: Traditional Medication, Lexical Meaning, Cultural Meaning, Procession.
DESKRIPSI PERMASALAHAN GURU DALAM PEMBELAJARAN TEMATIK DI KELAS V SEKOLAH DASAR NEGERI 03 PONTIANAK SELATAN
Authors: Leonardo Veddriq , Halidjah Siti , Ghasya Dyoty Auliya Vilda
Published: October 2022

AbstractThis research aims to describe the problems of teachers in thematic learning in class V Elementary School 03 South Pontianak. The research method used is descriptive method in the form of qualitative research. The source of the data for this research is the fifth grade teacher at the 03 South Pontianak State Elementary School. The data of this research are the results of interviews and questionnaires about teacher constraints in the implementation of thematic learning. The results of the analysis show firstly, that most teachers agree that the obstacles in implementing thematic learning are due to the limited knowledge of teachers regarding the application of thematic learning models and constraints in implementing thematic learning due to the limited media they have, so it is difficult to determine the right media in linking the theme to the subject. integrated, and constrained in applying thematic learning because the experience of teaching teachers using the thematic approach is still minimal, they still find it difficult to present thematic learning to students, and most of the means to support thematic learning in schools tend to be limited, so they have difficulty implementing thematic learning. the solutions provided by schools and the efforts made by teachers to increase knowledge and understanding related to thematic learning are by sharing (exchanging opinions) with fellow teachers, holding Teacher Working Groups (KKG), attending training (education and training), participating in ICT (in-house training)Keywords: Description, Problems, Thematic Learning.
PERMAINAN TRADISIONAL TEPOK ANTRI UNTUK PERKEMBANGAN SOSIAL ANAK USIA 5-6 TAHUN DI DESA ANJUNGAN
Authors: Handayani Lilis Puji , Marmawi Marmawi , Lukmanulhakim Lukmanulhakim
Published: October 2022

AbstractThis study aims to find out and obtain information about how the traditional game of tepok antri can develop socially in children aged 5-6 years in Anjungan Village. The method used in this research is a descriptive method with a qualitative research form. The subjects in this study were 6 children aged 5-6 years and 6 people who had played tepok queuing as children in Anjungan Village. The data collection tools used observation guides, interview guides, and documentation. The results showed that: (1) Empathy can be developed when a child pays attention to a friend who is sad or in distress, (2) Generosity can be developed when a child wants to share a hiding place with other children, (3) Cooperation can help developed when children are compact in playing and obeying existing game rules, (4) caring can be developed when children help friends who fall while playing and need help.Keywords: Tepok Antri Game, Social Development
PERAN ORANG TUA DALAM KELANGSUNGAN PENDIDIKAN ANAK KE PERGURUAN TINGGI DIDESA PANCAROBA
Authors: Meri Melliana , Rustiyarso Rustiyarso , Al Hidayah Riama
Published: October 2022

This study aims to analyze (1) the role of parents as a motivator in the continuity of children's education to college. (2) The role of parents as facilitators in the continuity of children's education to tertiary institutions. The research method used is descriptive in the form of qualitative research. The data sources in this study are parents of children who are currently pursuing higher education. The data in this study are the results of interviews with parents whose children are currently pursuing higher education. Collecting data in this study using observation and interview techniques. Data collection tools used observation guides, interview guides and notebooks and archives. The results showed that the role of parents as a motivator in the continuity of children's education to college comes from the support of parents who make children serious in undergoing education and praise, while the role of parents as facilitators in the continuity of children's education to college comes from the provision of facilities. given by parents tochildren as a support for education.Keywords: The Role Of Parents, Child Education
KAJIAN STILISTIKA PADA KUMPULAN PUISI SAPE’ JINGGA KARYA ANTONIUS TOTOK PRIYADI
Authors: Fatria Uray Dirza , Syam Christanto , Muzzamil Ahmad Rabi’ul
Published: October 2022

Abstract     This study aims to describe the diction, style of language, and imagery contained in the collection of poetry Sape' Jingga by Antonius Totok Priyadi. The research method used is a descriptive method with a qualitative research form. The approach used is a stylistic approach. The data source of this research is a collection of poetry Sape' Jingga by Antonius Totok Priyadi which was written in 2015. The techniques and data collection tools used in this research are documentary studies and the researchers themselves. The data validity testing technique uses reference estimation, peer checking through discussion, and triangulation. The results of this study are about diction, language style and imagery contained in the collection of poetry Sape' Jingg by Antonius Totok Priyadi regarding data analysis carried out by determining the diction or word choice used by the author. The diction used includes the use of connotation, denotation, abstract, special, and vulgar words. The use of language style in the collection of Sape' Jingga poetry by Antonius Totok Priyadi includes hyperbole, personification, metaphor, smile, and repetition. The use of imagery in the collection of poetry Sape' Jingga by Antonius Totok Priyadi includes visual imagery, auditory imagery, movement imagery and olfactory imagery. Keywords: Diction, image, language style, poetry collection.
ANALISIS TANGGAPAN MASYARAKAT KELURAHAN BATULAYANG TERHADAP KEBIJAKAN PEMERINTAH TERKAIT SOCIAL- DISTANCINGSELAMA MASA PANDEMI COVID-19
Authors: Daul Elviana Mutiara , Bahari Yohanes , Ramadhan Iwan
Published: October 2022

AbstractThis study aims to find out the response of the people of Batulayang village togovernment policies related to social distancing during the Covid-19 pandemic. Acommon problem in this study is how the community responds to government policiesrelated to social distancing during the Covid-19 pandemic, how the participation of thepeople of Batulayang village related to social distancing. The research method used isdefxriptif with qualitative research forms. Data collection techniques used observationguides, interview guides, and documentation. The analysis in this study was presenteddescriptively qualitatively by using informants as many as 7 people from Batulayangvillage. The results of this study show that the response of the people of Batulayangvillage to government policies related to social distancing during the Covid-19pandemic is quite good by trying to adapt to a new way of life where using masks whenactivities outside the home and maintaining distance from each other and communityparticipation in responding to government policies is quite good, if within the scope ofthe group they provide handwashing, Wear a mask and keep your distance from eachother.Keywords: Community Response, Social Distancing.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD (STUDENT TEAMS ACHIEVEMENT DIVISION) UNTUK MENINGKATKAN MOTIVASI DAN HASIL BELAJAR PESERTA DIDIK PADA MATERI KALOR DI SMP NEGERI 14 PONTIANAK
Authors: Dahlia Dahlia , Djudin Tomo , Arsyid Syaiful B.
Published: October 2022

AbstractThis study aimed to determine the effect of the application of the STAD (Student Teams Achievement Division) type of cooperative learning model to improve students’ motivation and learning outcomes on heat in seventh-grade SMP Negeri 14 Pontianak. The research method used in the study is experimental in the form of a pre-experimental design with one group pretest-posttest design model. The sampling technique used in this study was intact group technique and obtained seventh-grade in A-class with a total of 30 students. The instrument of this research was a learning outcome test consisting of 10 multiple choice questions, 3 essay questions, and a learning motivation questionnaire, which consisted of 4 sub variable (success orientation, failure anticipation, innovation, and responsibility). Based on the results of data analysis, pretest and posttest learning outcomes showed an increase in learning outcomes as evidenced by an increase of 53,88%. The result of the Wilcoxon test with SPSS Statistics 17.0 shows that there has been a significant in student learning outcomes. The effect size of the STAD type cooperative learning model in improving learning outcomes is 1,34 (high category). In the result of the learning motivation questionnaire, an average of 67,75% was obtained before the STAD type cooperative learning model was used which was categorized as sufficient, and 85,73% before the STAD cooperative learning model was used which was in the good category. There is an increase in learning motivation by 19,98%. The results of the study are expected to be an alternative to increase student motivation and learning outcomes on heat.Keywords: Application, STAD, Learning Motivation, Learning Outcomes, Heat
PERAN GURU SOSIOLOGI DALAM MENGEMBANGKAN KARAKTER JUJUR PADA SISWA DI SMA HARAPAN BANGSA SAMALANTAN
Authors: Krisnawati Krisnawati , Rustiyarso Rustiyarso , Hidayah Riama Al
Published: October 2022

AbstractThis study aims to explain the role of sociology teachers in developing the honest character of class X students at SMA Harapan Bangsa Samalantan, Bengkayang Regency. Specifically, it explains how sociology teachers play a role in developing the honest character of class X students at SMA Harapan Bangsa Samalantan. With indicators a teacher as an educator is an educator who becomes a figure, role model, and identification for students, and the environment. Therefore, teachers must have certain personal qualities, which include responsibility, discipline. The role of the teacher as a supervisor is that the teacher must clearly formulate goals, establish a lesson, and assess its smoothness according to the needs and abilities of students. Guiding students to get used to being honest in all things, such as being honest in doing school assignments, being honest in acting, the teacher as a mentor playing a role in monitoring and directing students so that they can develop personally according to their honest potential.Keywords: The Role of Sociology Teachers, Honest Character, SMA Harapan Bangsa Samalantan High School Students
PEMAHAMAN GURU DALAM MENINGKATKAN PERILAKU EMPATI DI TK ISLAM AL-KAUTSAR PONTIANAK SELATAN
Authors: Maulina Syntia , Ali Muhamad , Lukmanulhakim Lukmanulhakim
Published: October 2022

AbstractThis study aims to determine the teacher's understanding in improve empathetic behavior in Al-Kautsar Islamic Kindergarten, South Pontianak. Because the importance of empathy from an early age to be able to understand the situation of others well. The general purpose of this research is to describe understanding teacher on empathetic behavior at Al-Kautsar Islamic Kindergarten, South Pontianak. By This research specifically aims to find out how the teacher's understanding of in increasing empathetic behavior in children, what are the strategies carried out by the teacher, how is the evaluation carried out by the teacher in improving empathetic behavior. The research method used is descriptive with form of qualitative research. The source of this research data consists of 1 teacher class B1 and 10 children as research subjects. Data collection tool are interview guidelines, observation guidelines, documentation data and notes field. Sources of data are teachers and students in class B1. After data collected data is presented to then draw conclusions. From the results of the study obtained teacher understanding in improving empathetic behavior in Al-Kautsar Islamic Kindergarten, South Pontianak, where it was found that children can behave empathically well even though it looks like there are still some children who still lack empathy for their friends, as well as the teacher is very play an active role in guiding and directing children to get used to empathize with peers. The suggestions given are (1) the teacher is expected can make an activity in the form of a game while telling stories that can stimulate children to empathize, (2) teachers and parents should be more frequent communication regularly to help grow children's development in empathy for others, (3) the teacher should also uses the habituation method of the field trip method to applying empathetic behavior to children in playing activities with friends peers, sharing activities, and in showing tolerance, (4) Share Future researchers are expected to be able to find a problem regarding teacher understanding in improving children's empathetic behavior.Keywords: Empathic Behavior, In Improving, Teacher's Understanding
EFEKTIVITAS MEDIA POWTOON TERHADAP HASIL BELAJAR X IPS MATA PELAJARAN SEJARAH MAN 2 PONTIANAK
Authors: Anggraini Rista , Chalimi Ika Rahmatika , Putri Astrini Eka
Published: October 2022

This research aims to determine whether there is an effect of usedPowtoon-basedPower Point media learning. This research was conducted in MAN 2 Pontianak withstudents in class X IPS 1 and X IPS 2. The research method used in this research isdescriptive quantitative method. The data in this study were in the form of studentlearning outcomes and learning evaluation question sheets. Data analysis usedMicrosoft Excel 2010. This research produces some data such as the value of studentlearning outcomes before and after usedPowtoon learning media, validity test,reliability test, normality test, homogeneity test, hypothesis test, and Effect Size test.Student learning outcomes have increased after used the Powtoon learning media.Learning outcomes before used powtoon media in the control class were 55.3 whilefor the experiment class the averange learning outcomes were 63. Learning outcomesafter used powtoon media had increased, especially in the Ekperiment class. For theControl class in this Post-Test activity, the average student learning outcomes are58,2. While the average student learning outcoes in the Ekperiment class is 76,6. Testof the hypothesis it is known that t is 1.99, which means that the used of this media has an effected on the learning outcomes of students. The last one is the Effect Size test which scores 0.15 in the "Very Small" category.Keywords: Effect Size, Learning Media, Powtoon.
KORELASI ANTARA MOTIVASI BELAJAR DENGAN HASIL BELAJAR PADA MASA PANDEMI COVID – 19 KELAS V
Authors: Kristian Kristian , Sabri Tahmid , Pranata Rio
Published: October 2022

This study aims to describe the correlation between learning motivation and thematiclearning outcomes during the covid-19 pandemic for fifth grade students at 33 NorthPontianak State Elementary School. The method used is a descriptive method in theform of relationship studies by using correlation studies. This study used a populationof 68 students and a sample of 34 students. Data collection techniques used in thisresearch are indirect communication techniques and documentary study techniques.The tools used to collect data are questionnaires and student learning outcomesdocuments. Based on statistical analysis using the product moment correlationformula for calculating the correlation of learning motivation with thematic learningoutcomes during the Covid-19 pandemic, fifth grade students of the 33 NorthPontianak State Elementary School obtained rcount of 0.279, while rtable of 0.339,this means rcount < rtable. From the results of the calculations, it can be concludedthat there is no positive correlation between learning motivation and thematiclearning outcomes during the Covid-19 pandemic for fifth grade students at the 33North Pontianak State Elementary School.Keywords: Correlation, Covid-19, Motivation, Thematic Learning Outcomes
ANALISIS PELAKSANAAN PEMBELAJARAN DARING SELAMA PANDEMI COVID-19 PEMBELAJARAN GEOGRAFI KELAS X SMAN 1 ANJONGAN
Authors: Setianingsih Andini , Ulfah Maria , Christanto Ludovicus Manditya Hari
Published: October 2022

This study aims to describe the implementation of online learning, as well as to determine the factors that hinder the implementation of online learning during the COVID-19 pandemic in geography learning class X SMAN 1 Anjongan. This research is a qualitative descriptive type with data collection techniques through interviews and documentation. The results of the study show that geography learning is carried out online, teachers and students use learning applications such as whatsapp and google classroom. In the implementation of online geography learning, teachers often use whatsapp as a medium to share information and communicate with students and parents of students, while in delivering material and giving assignments using google classroom. The implementation of online learning during the covid-19 pandemic in class X geography learning at SMAN 1 Anjongan was very good in accordance with government regulations through Circular Letter No. 15 of 2020 concerning the steps that must be taken by heads of education units, teachers and students in carrying out learning from home during the covid-19 pandemic. The obstacles faced in the implementation of online learning during the Covid-19 pandemic in class X geography learning at SMAN 1 Anjongan were unstable network conditions, economic conditions of students, difficulty understanding material, teacher and student cellphone errors due to memory overload. , and students are less active in the learning process, causing teachers to have difficulty measuring the extent to which students understand.Keywords : Analytics, Online Learning, Covid-19
Ligand-Assisted Gold-Catalyzed Efficient Alkynylative Cyclization with Terminal Alkynes Using H2O2 as Oxidant
Authors: Hashmi A. Stephen K. , Shi Hongwei , Dietl Martin C. , Stein Philipp M. , Rudolph Matthias , Wang Tao , Li Jun , Krämer Petra , Rominger Frank
Published: October 2022

The gold-catalyzed cyclization-functionalization is a powerful approach to construct high-value organic molecules. However, current strategies mainly rely on expensive external oxidants or pre-functionalized substrates, which exhibit low atom economy and high costs. Considering the current increasing demand for environmentally friendly and atomically efficient processes, the development of greener and more efficient synthetic strategies becomes more valuable and attractive. To circumvent these drawbacks, we developed a green gold-catalyzed cyclization-functionalization strategy using hydrogen peroxide as oxidant. A direct construction of 3-alkynylbenzofurans from terminal alkynes was possible by this gold-catalyzed process. Green and inexpensive oxidants, simple gold catalysts, mild reaction conditions, high atom economy, remarkable selectivity, wide substrate scope, broad functional group compatibility and a facile gram-scale synthesis make this alkynylative cyclization method practical for many forms of cyclization reactions. In contrast to prior methods neither pre-functionalized alkynes nor expensive external oxidants are needed.
Synthesis of Aromatic Carbonyl Thiourea PI-28 Derivatives for the Development of Radicle Elongation Inhibitor of Parasitic Weeds
Authors: Sonoda Motohiro , Mimura Yusuke , Noda Shizuki , Okazawa Atsushi
Published: October 2022

Aromatic carbonyl thiourea PI-28 has been focused on as a lead compound for the developing radicle elongation inhibitors in germinating Orobanche minor dry seeds. In this study, we have synthesized PI-28 and its derivatives using commercially available phenols, 2-chloroacetamide, and aryl isothiocyanates. In this method, 2-aryloxyacetanilides, which are also attractive as bioactive compounds, were obtained as byproducts. These compounds were formed due to the loss of isothiocyanate moiety from the formed aromatic carbonyl thioureas.
“I am working 24/7, but I can't translate that to you”: The barriers, strategies, and needed supports reported by chemistry trainees from English-as-additional language backgrounds
Authors: Deng Jacky M. , Flynn Alison B.
Published: October 2022

Having a shared language such as English facilitates globalization of science but it can also limit science by poses barriers for those who have learned English-as-an-additional language (Eng+). There is currently no research focused on the experi-ences of Eng+ graduate students and postdoctoral researchers (“trainees”) in chemistry and related sciences, despite the grow-ing prominence of Eng+ trainees and ongoing calls for improving equity and inclusion in the sciences. Without research focused on Eng+ trainees, we risk losing out on a diversity of perspectives and expertise that might otherwise strengthen scientific progress. This study represents a first step in developing and evaluating strategies that effectively support Eng+ chemistry trainees by investigating their experiences with learning, communicating, and doing chemistry in English. This research was guided by three research questions: (1) What are Eng+ chemistry graduate students’ and post-doctoral research-ers’ (i.e., trainees) language experiences before entering English-dominant research programs? (2) What language barriers have trainees faced in learning, communicating, and doing chemistry? and (3) What strategies and supports have been helpful or needed? To investigate these RQs, we conducted semi-structured focus groups and interviews with 18 Eng+ chemistry graduate students and post-doctoral researchers, followed by qualitative analysis to identify key themes. We found that trainees had diverse language experiences before entering English-dominant research programs and faced challenges working in an English research environment. Trainees described research impacts that included avoiding interactions with colleagues, exacerbated feelings of imposter syndrome, needing extra time to learn or communicate, and not being able to fully express their knowledge. They expressed an ongoing desire to learn English and described their various independent strategies, demonstrating resilience and growth mindset to navigate challenges. All participants believed that research supervisors and institutions needed to play a larger role in supporting Eng+ trainees, such as empathetic supervisors who offer personal and professional support, and institutional supports that provide chemistry-specific knowledge-building and networking opportunities. Based on the findings, we recommend approaches that supervisors and institutions can enact that may improve linguistic equity in the chemical sciences.
A Readily Obtained Alternative of 1H-benzo[f]indole towards Room Temperature Ultralong Organic Phosphorescence
Authors: Fu Xiaohua , Zhang Xue , Qian Chen , Ma Zhimin , Li Zewei , Jiang Hong , Ma Zhiyong
Published: October 2022

1H-benzo[f]indole (Bd) is a significant unit in the field of room temperature ultralong organic phosphorescence (RTUOP). However, the synthesis of Bd is rather hard and of low yield, which greatly limits the wide applications of RTUOP. Therefore, exploring readily obtained alternatives of Bd is of great significance and demands to be addressed though it is full of challenges. Herein, we report a new unit named 5H-benzo[b]carbazole (BCz) which can function similarly with 1H-benzo[f]indole (Bd) in RTUOP. BCz can be obtained facilely via two steps of reactions while the synthesis of Bd requires seven steps of tedious reactions. Excitingly, readily obtained BCz is an excellent alternative of Bd in RTUOP and shows some advantages in comparison with Bd. Firstly, BCz and its derivatives exhibit distinctive red-shifted red ultralong phosphorescence at 77 K while Bd does not. Secondly, BCz demonstrates remarkable photo-activated yellow ultralong phosphorescence at room temperature while the phosphorescence of Bd is difficult to be activated at room temperature. Thirdly, BCz derivatives (CNPyBCz and CNBrBCz) display similar photo-activated yellow ultralong phosphorescence with Bd derivatives at room temperature but the phosphorescent lifetimes are longer. Fourthly, it is shown that BCz and its derivatives emit yellow RTUOP in the powder matrixes besides their carbazole counterparts. It is revealed that BCz and Bd share the same cation radical-involved phosphorescence mechanism featuring charge separation and charge recombination and the redshift of phosphorescence in the aggregated state arises from the enhanced π-π interactions among BCz units. To our best knowledge, this study paves a simple way for the future applications of RTUOP. Moreover, this work indicates that cation radical-involved mechanism may be universal in the field of RTUOP.
Apt-clean: Aptamer-mediated cleavage of extracellular antigen, a new strategy for the inhibition of membrane protein functions
Authors: Hoshiyama Junya , Okada Yuga , Cho Seojung , Ueki Ryosuke , Sando Shinsuke
Published: October 2022

Recently, targeted protein degradation (TPD) has attracted much attention as a powerful strategy for effective inhibition of disease-related proteins. However, development of ligands with high affinity and specificity for a target protein is still a demanding task and poses a particular challenge for designing TPD therapeutics. In this work, we report a novel TPD strategy called aptamer-mediated cleavage of extracellular antigen (Apt-clean), where oligonucleotide-based affinity agents are used for selective recruitment of proteases to target membrane proteins. Our data demonstrate that Apt-clean induces selective degradation of the target protein both in vitro and in cellulo. In addition, potential of Apt-clean was demonstrated through the inhibition of a tumor-related growth factor signaling. This novel TPD modality may serve as an efficient and flexible strategy for targeting membrane proteins.
A spin-flip variant of the second-order approximate coupled-cluster singles and doubles method
Authors: Paran Garrette Pauley , Utku Cansu , Jagau Thomas-Christian
Published: October 2022

We report an implementation of a spin-flip variant of the second-order approximate coupled-cluster singles and doubles (CC2) method. The resolution-of-the-identity approximation or, alternatively, Cholesky decomposition of the two-electron integrals are used to reduce the memory requirements. We illustrate the performance of the new method by constructing potential energy curves of H2 and HF and by computing singlet-triplet splittings for various diradicals including some binuclear copper complexes that are of interest as molecular magnets. We find that spin-flip CC2 performs very similarly to the spin-flip variant of the algebraic diagrammatic construction scheme for the polarization propagator of second order (ADC(2)). Application to ozone shows that spin-flip CC2 predicts a barrierless symmetric dissociation of this molecule similar to spin-conserving CC2 and in contrast to spin-flip ADC(2) and coupled-cluster singles and doubles.
Shortwave infrared fluorofluorophores for multicolor in vivo imaging
Authors: Lim Irene , Lin Eric , Garcia Joseph , Jia Shang , Sommerhalter Robert , Ghosh Subrata , Gladysz John , Sletten Ellen
Published: October 2022

Developing chemical tools to detect and influence biological processes in complex systems is a cornerstone of the field of chemical biology. Here we combine two tools which rely on orthogonality– perfluorocarbons and multiplexed shortwave infrared fluorescence imaging– to track the biodistribution of nanoemulsions in real time in living mice. Drawing inspiration from fluorous and shortwave infrared (SWIR) fluorophore development, we prepared two SWIR-emissive chromenylium polymethine dyes that are soluble in perfluorocarbons. These are the most red-shifted fluorous fluorophores– also known as “fluorofluorophores”– to date. After characterizing the fluorofluorophores, their in vivo utility was demonstrated through tracking perfluorocarbon nanoemulsion biodistribution in mice. We used an excitation-multiplexed approach to visualize two variables simultaneously, which halves the number of animals necessary per experimental group. These experiments provided insight into the importance of size and identity of the surfactant in biodistribution profiles in addition to demonstrating the success of fluorofluorophores for imaging perfluorocarbons in vivo.
Signal-specific reactivity of host-guest complexes controls supramolecular aggregate formation
Authors: Li Guotai , Wan YuCheng , Lewis Reece , Fan Bowen , Eelkema Rienk
Published: October 2022

Where biology makes extensive use of signal-responsive chemical reaction networks to regulate various biochemical and assembly processes, translation of these principles to abiotic systems is still rare. Here, we report an aggregation process forming a supramolecular network held together by host-guest interactions, responsive to nucleophilic chemical signals through a chemical reaction-assembly cascade. In particular, we developed a signal induced switch between cucurbituril[8] binary and ternary complexes with cationic bipyridine derivatives, where the charge on the bipyridine can be changed through an allylic substitution reaction with the nucleophilic signal. The kinetics of this reaction and the coupled aggregation process can be tuned using a range of biologically relevant nucleophilic signals. In addition, we developed a signal transducer to enable response to weakly nucleophilic signals. When applied to a multitopic bipyridine guest, reaction with the nucleophile signals leads to supramolecular network formation where the aggregation rates and final structure depend on the nucleophilicity of the signal. This work opens the door to new opportunities for signal responsive synthetic materials and interaction with biological systems.
A dominant negative mitofusin causes mitochondrial perinuclear clusters because of aberrant tethering
Authors: Sloat Stephanie R , Hoppins Suzanne
Published: October 2022

In vertebrates, mitochondrial outer membrane fusion is mediated by two mitofusin paralogs, Mfn1 and Mfn2, conserved dynamin superfamily proteins. Here, we characterize a variant of mitofusin reported in patients with CMT2A where a serine is replaced with a proline (Mfn2-S350P and the equivalent in Mfn1, S329P). This serine is in a hinge domain (Hinge 2) that connects the globular GTPase domain to the adjacent extended helical bundle. We find that expression of this variant results in prolific and stable mitochondrial tethering that also blocks mitochondrial fusion by endogenous wild-type mitofusin. The formation of mitochondrial perinuclear clusters by this CMT2A variant requires normal GTPase domain function and formation of a mitofusin complex across two membranes. We propose that conformational dynamics mediated by Hinge 2 and regulated by GTP hydrolysis are disrupted by the substitution of proline at S329/S350 and this prevents progression from tethering to membrane fusion. Thus, our data are consistent with a model for mitofusin-mediated membrane fusion where Hinge 2 supports a power stroke to progress from the tethering complex to membrane fusion.