bluuebunny/crossref_metadata_2025 huggingface dataset:
The Scope of Mendelian Cardiomyopaties Genes
Authors: Kucher A. N. , Nazarenko M. S.
Published: May 2024

The review is devoted to the analysis of the scope of the genes of Mendelian cardiomyopathies (CM), specifically hypertrophic, dilatational, arrhythmogenic, and restrictive cardiomyopathy. According to Simple ClinVar, pathogenic/probably pathogenic variants of 75 genes lead to the development of one or more types of CM. At the same time, these genes are characterized by their expression in various tissues and organs (not only in the heart and blood vessels, but also in various parts of the brain, gastrointestinal tract, etc.), as well as by their involvement in a variety of metabolic pathways and biological processes. These data are generally consistent with the results of genome-wide association studies (GWAS). Polymorphisms of the CM genes are associated with various types of CM and other cardiovascular diseases, as well as obesity, various diseases of the musculoskeletal and nervous systems, mental, oncological, infectious diseases, and others. In addition to pathological conditions, common variants of the CM genes contributed to the variability of a wide range of quantitative traits, including pathogenetically significant for various multifactorial diseases. The non-randomness of the identified associations of CM genes with a wide range of diseases is evidenced by: comorbidity of CM with GWAS-associated diseases or the involvement of the latter as a symptom, a risk factor for the development of myocardial pathology, a modifier of the clinical presentation; overlapping of the affected organ systems and the spectrum of pathologies associated with common variants (according to GWAS) and to which rare pathogenic variants (according to OMIM) of the CM genes lead; confirmation of the involvement of CM genes in the pathogenesis of pathologies of other organ systems at the molecular level. Thus, the data presented in the review indicate the wide scope of the genes of primary CM, which goes beyond the cardiovascular system. That indicates the relevance of conducting comprehensive studies aimed at determining the cause-and-effect relationships between the CM and pathologies of other organs, including with the involvement of molecular genetic data.
Populations of Tuvan Shot-Fat-Tailed Sheep in the Structure of the Gene Pool of Sheep Breeds of the Russian Federation
Authors: Beketov S. V. , Deniskova T. E. , Dotsev A. V. , Nikolaeva E. A. , Zinovieva N. A. , Selionova M. I. , Stolpovsky Yu. A.
Published: May 2024

Using 11 microsatellite markers (ОarCP49, INRA063, HSC, OarAE129, MAF214, OarFCB11, INRA005, SPS113, INRA23, MAF65, McM527), data were obtained on the levels of variability and degree of differentiation of 24 populations (1140 samples) of the Tuvan coarse-haired short-fat-tailed sheep of different regions of the Republic of Tyva and 24 breeds of sheep (721 samples) of various origins, covering the main sheep-breeding regions of the Russian Federation. During the analysis, a high level of genetic isolation and variability of Tuvan sheep was found, and in the general structure of Russian sheep breeds, a pronounced genetic divergence was revealed into two large groups, one of which unites fine-fleeced and semi-fine-fleeced sheep, and the other indigenous coarse-wooled breeds of North Caucasian and Asian origin
Rare-earth mineralization in terrigenous deposits of the Shatak complex (Southern Urals): species diversity and features of chemical composition
Authors: Kovalev S. G. , Kovalev S. S. , Sharipova A. A.
Published: May 2024

As a result of the study of terrigenous rocks of the Shatak complex, which includes deposits of the Kuz’elga and Karan subformations, rare earth minerals were found: allanite-(Ce), monazite-(Se), monazite-(Nd), xenotime-(Y), REE-bearing epidote, and unidentified connections.
It has been established that during the metamorphism of terrigenous rocks of detrital zircon, it is a selective concentrator and thorium, a popular group of rare earth elements and thorium. The comparative analysis showed that, in terms of chemical composition, rare-earth minerals (monazite-(Ce) and xenotime-(Y)) from the Shatak rock are significantly important from heavy ones from other complexes observed on the western slope of the Southern Urals by the presence of gadolinium in monazite, and in xenotime – consecutive REE group represented by Ce, Nd and Sm. When calculating the thermal bar, characterizing changes in the composition of structural-material complexes of western origin, slopes from the main factors that determine the characteristics of the chemical composition of rare earth chemical elements, which are the chemical composition of mineral formation.
Lithological features of the uryuk formation in the tolparovo section of the vendian (Southern Urals)
Authors: Gorozhanin V. M. , Michurin S. V. , Yuldashbaeva V. F.
Published: May 2024

New results of lithological structural and textural observations and petrographic study of rocks of the Uryuk formation exposed in the basin of the Maly Tolpar River in the Bashkir meganticlinory are presented. For the first time, a wide development of consedimentary underwater landslide folds in the Uryuk deposits has been established, the sizes of which vary from the first tens of centimeters to the first meters. In sandstones, the presence of oblique, wavy, flasery and horizontal, with a dual character of thin clay layers, layering, as well as structureless layers with a massive texture, is recorded. Signs of shallow wave ripples have been established. Mechanoglyphs and textures similar to Arumberia banksi have been found, which presumably represent the lithified structures of bacterial mats that existed under certain conditions – shallow-sea environments and conditions of sandy-clay sedimentation. It is concluded that the Uryuk deposits, despite the absence of direct lithological signs of diamictites in them, form a single sedimentary sequence with the underlying Tolparov-Suirovsky marine glacial deposits, in which a shallow-sea sedimentation regime is established by the end of the Uryuk time. It is shown that the presence of ferruginous minerals in sandstone cement is secondary in nature and is associated with their epigenetic transformations. It is concluded that the red-colored color of the rocks of the Uryuk formation cannot be used for stratification of its sections and reconstruction of sedimentation conditions in the Uryuk time.
Phylogenetic position of Polymorphus phippsi Kostylew, 1922 and Polymorphus magnus Skrjabin, 1913 (Palaeacanthocephala, Polymorphidae) ascertained on the basis of molecular data
Authors: Diumina A. V. , Galaktionov K. V. , Atrashkevich G. I.
Published: May 2024

Polymorphidae is a family of acanthocephalans, obligatory parasites with a complex life cycle involving arthropods as intermediate hosts and vertebrates of different taxa as definitive hosts. The current taxonomy of Polymorphidae seems to be equivocal. Its type genus Polymorphus has been shown to be polyphyletic based on molecular data. We obtained partial sequences of 28S rDNA gene and cox1 mitochondrial gene of two species of this genus, Polymorphus phippsi and P. magnus, and used them in a reconstruction of the polymorphid phylogeny. As a result, P. magnus was included into the same clade as the type species of the genus, P. minutus, while P. phippsi appeared to be close to Profilicollis spp. The position of P. phippsi agrees with the polyphyly of Polymorphus but does not correspond to its taxonomic status based on described phenotypic characters.
Reference blocks for penetrant testing
Authors: Delenkovsky N. V. , Gnusin A. B.
Published: May 2024

Reference blocks for penetrant testing have been developed, allowing measurements using an optical microscope of both the opening width of surface defects and their depth. In this case, the condition that defect cavities do not extend onto the side faces of the blocks is met. Experimental data on the dependence of the defect’s indications area after development on their width (0.5—8.5 µm) and depth (40—860 mm) are presented. Using correlation analysis, the statistical significance of the above parameters is shown.
Cellular Model for the Analysis of IRBIT-Dependent Regulation of the Type 1 IP3 Receptor
Authors: Kopylova E. Е. , Masulis I. S. , Rogachevskaja O. A. , Kochkina E. N. , Kovalitskaya Y. A. , Bystrova M. F. , Kolesnikov S. S.
Published: May 2024

In vertebrate genomes, three genes encode subunits of IP3 receptors, including IP3R1, IP3R2, and IP3R3. Despite high homology between different subunits, homotetrameric IP3 receptors formed by IP3R1, IP3R2, and IP₃R3 in the endoplasmic reticulum membrane are markedly distinct by their functional features and regulatory mechanisms. It was particularly reported that IP3R1 is specifically regulated by the IP3R binding protein released with IP₃ (IRBIT), which competes with IP3 for binding to IP3R1. In turn, affinity of IRBIT/IP₃R1 binding is regulated by phosphorylation of IRBIT. By using the CRISPR/Cas9 approach to edit the genome of HEK-293 cells, two monoclonal cell lines were generated as a platform for uncovering a role of IRBIT and associated regulatory circuits in control of the IP₃R1 activity. In one line, HEK-IP3R1, IP₃R2, and IP3R3 genes were disrupted, while IP₃R1 was remained functional. Based on this line, the HEK-IP3R1/DIRBIT line was generated, wherein IRBIT (AHCYL1) gene was inactivated. The comparative analysis of ACh-induced Ca2+ signaling in cells of both lines was performed by employing the Ca2+ dye Fluo-4 and Ca2+ imaging. It was particularly shown that ACh mobilized Ca2+ in cells of both lines, which responded to the agonist at widely varied doses in an “all-or-nothing” manner. Yet, HEK-IP₃R1/DIRBIT cells turned out to be less sensitive to ACh compared to HEK-IP₃R1 cells.
α1-Adrenergic Receptors Control the Activity of Sinoatrial Node by Modulating Transmembrane Transport of Chloride Anions
Authors: Voronina Y. A. , Fedorov A. V. , Chelombitko M. A. , Piunova U. E. , Kuzmin V. S.
Published: May 2024

Norepinephrine (NE), which is released by sympathetic nerve endings, causes an increase in the frequency of spontaneous action potentials in the pacemaker cardiomyocytes of the sinoatrial node (SAN), also known as the “pacemaker” of the heart. This results in an increase in heart rate (HR). It is known that two types of postsynaptic adrenoreceptors (ARs), α1-AR and β-AR, can mediate the effects of NE. The role of α1-AR in the sympathetic control of heart rate and SAN automaticity, as well as the membrane mechanisms mediation the effects of α1-AR on the pacemaker, have not yet been elucidated. In this study, we utilized immunofluorescence confocal microscopy to examine the distribution of α1A-AR in the SAN of rats. Additionally, we assessed the expression of α1A-AR mRNA in the SAN tissue using RT-PCR. Furthermore, we investigated the impact of α1-AR stimulation on key functional parameters of the pacemaker, including the corrected sinus node recovery time (SNRT/cSNRT) and the SAN accommodation, using the Langendorff perfused heart technique. We also used optical mapping of the electrical activity of perfused, isolated tissue preparations to study the effect of α1-AR stimulation on the spatiotemporal characteristics of SAN excitation. We tested the effects of chloride transmembrane conductance blockade on alteration of functional parameters and pattern of SAN excitation caused by α1-AR. Fluorescent signals corresponding to α1A-AR have been identified in SAN cardiomyocytes, indicating the presence of α1A-AR at protein level. The expression of α1A-AR in SAN has been also confirmed at the mRNA level. The stimulation of α1-AR affects SAN functioning Phenylephrine (PHE) utilized as α1A-AR agonist causes a decrease in SNRT/cSNRT, as well as an acceleration of SAN accommodation. These effects were rate dependent and were observed at a high frequency of pacemaker tissue stimulation. PHE induces changes in the excitation pattern of the SAN. The effects of PHE on functional parameters and SAN excitation pattern are attenuated by Ca2+-dependent chloride channel blocker NPPB but remains unaffected by the protein kinase C inhibitor BIM. Our results suggest that cardiac α1-ARs are important for maintaining function of SAN pacemaker at high heart rates and that α1-AR signalling cascades in the SAN target Ca2+-dependent chloride channels are involved in the α1-adrenergic modulation of the electrophysiological properties of the heart pacemaker.
Lipid profile of parr and smolts of Atlantic salmon (Salmo salar L.) reared in aquaculture under various lighting regimes
Authors: Provorotov D. S. , Murzina S. A. , Voronin V. P. , Manoylova D. I. , Kuznetsova M. V. , Kuritsyn A. E. , Nemova N. N.
Published: May 2024

The study of the biochemical mechanisms of the effect of additional lighting on the
growth and early development of salmonids in aquaculture allows to identify patterns of slow or accelerated growth, as well as the onset of the smoltification. In this study, the results of changes in lipid status in parr and smolts of Atlantic salmon after the “winter window” (December-January) are presented. These results were obtained from three experimental groups exposed to different lighting and feeding regimes at the fingerlings stage. The changes in lipid composition of the studied young salmon indicate the onset of smoltification in all experimental groups. However, this effect is the most pronounced in the fish previously reared under continuous lighting during the summer-autumn season.
Effect of some metabiotics from strains of the genus Enterococcus on the growth of pathogenic bacteria that cause pneumonia
Authors: Israyelyan А. , Balabekyan Ts. , Sargsyan Z. , Tkhruni F.
Published: May 2024

It is shown that the highest antimicrobial activity (100%) against strains ofKl. pneumoniaandSt. pneumoniaof strains causing pneumonia occurs when using protein-like fractions (AMP) obtained from CL after cultivation of LAB of strains of the genus Enterococcus isolated from fermented milk of goats and donkeys, and the lowest activity of AMP from CL of strains isolated from fermented milk of cows (20–50%). It was shown that the isolated polysaccharides of strains of the genus Enterococcus, which have antimicrobial activity, consist of glucose and galactose molecules. The difference in the effectiveness of the influence of polysaccharides depends on the source of the isolated pathogens, depends on the concentration of the polysaccharide, the genus and species of the strain causing pneumonia. It is concluded that some metabiotics of the Enterococcus genus are promising for use as bioinhibitors of the growth of pathogenic bacteria.
Extra-pair paternity in the Wood Warbler (Phylloscopus sibilatrix) in Central Russia
Authors: Goretskaia M. I. , Belokon Yu. S. , Belokon M. M.
Published: May 2024

Extra-pair paternity is widespread in passerine birds. The number of extra-pair young (EPY) varies among different species and populations of the same species. We tested if it is a case for a small passerine bird with poly-territorial behaviour, the Wood Warbler (Phylloscopus sibilatrix). The results are based on the microsatellite analysis of seven loci and revealed a high level of EPY in Central Russia population of Wood Warbler (EPY in 41% of all nests, 16 of 39 nests; 25% of all young were EPY, 52 of 212 young). We did not find relationship between relatedness among mates in the pair and the presence of EPY. There was no difference in heterozygosity and body mass between EPY and within pair young (WPY). Possible causes of extra-pair paternity are discussed.
Mesozooplankton communities in deep-water areas of the Black Sea: are their composition and biomass regulated by the Ctenophore Mnemiopsis leidyi A. Agassiz, 1865?
Authors: Anninsky B. E. , Finenko G. A. , Datsyk N. A.
Published: May 2024

The abundance, biomass, distribution and feeding patterns of the ctenophoreMnemiopsisleidyiA. Agassiz 1865 were studied in the deep-water Black Sea in October 2019. The biomass of the ctenophore in the open areas of the sea was 100–200 g m–2, the abundance was 16–38 ind. m–2. With the dominance of large individuals (≥30 mm) in the population, the activity of their reproduction remained extremely weak. The specific daily ration varied from ~4% to 13% of body carbon in adults and juveniles, respectively, and exceeded the minimum food requirements of the ctenophore. The daily consumption of three species of copepods (Acartiaspp.,Calanus euxinus,Oithona davisae) byM. leidyireached 4.5–11% of their biomass, while that of appendiculariansOikopleura(Vexillaria)dioica– 1.6%. The predatory pressure ofM. leidyion the entire prey zooplankton attained 2–4% of the biomass of organisms per day.
Peningkatan Kinerja Guru Melalui Supervisi Pendidikan Terhadap Guru MA Negeri 2 Serang Provinsi Banten
Authors: Andriwinata Momon
Published: May 2024

This research is motivated by the decline in teacher performance in the process of implementing teaching and learning. One of the indicators of decreased teacher performance in learning is the decreased learning achievement of students in the MA Nederi 2 Serang Banten Province. The purpose of this research is to improve teacher performance through individual supervision of teachers at MA Negeri 2 Serang Banten. The research method used is qualitative. Data collection techniques using interviews, observation and documentation studies. Based on the results of the research shows that; First, the implementation of student counseling services is carried out through the creation of a student counseling program and the formation of a student counseling team. Second, implementation of academic supervision through approaches and techniques; class visits, observe teacher performance, observe material management, lead group discussions. Third, monitor the results of teacher academic leadership by discussing learning methods, use and assessment techniques, use of learning environments, and use of study time.
Pembiasaan Tadarus Al-Qur’an Dalam Projek Penguatan Profil Pelajar Pancasila Di SMP N 3 Kertek Wonosobo
Authors: Fitrohati Rina , Majid Abdul , Fatiatun
Published: May 2024

The moral decadence that occurred at SMP N 3 Kertek Wonosobo after the pandemic, which was exacerbated by learning loss in students, made the school finally make the habit of Al-Qur'an recitation as a program in the project to strengthen the Pancasila student profile, especially for Dimension I, namely faith, fear of God Almighty, and noble character. This research aims to find out the concept, effectiveness and obstacles and support in the program. The type of research used is field qualitative with a qualitative descriptive approach. Data were collected using non-participant observation, free guided interviews and documentation. The data was analyzed by reducing, presenting the data and then drawing conclusions. The results showed that the concept of strengthening the first dimension of the Pancasila student profile through the Al-Qur'an recitation habituation program was integrated in the process of implementing the program starting from the preparation stage to the assessment stage. The program has not been effective in improving the morals of students. The supporting factors and inhibiting factors in the program come from internal and external factors, respectively.
Peran Media Audio Visual Untuk Meningkatkan Kualitas Belajar Siswa Mata Pembelajaran Pendidikan Agama Islam
Authors: Zahra Novitasari Nihaya , Zuhdi Ahmad , Fatiatun
Published: May 2024

The aim of this research is to determine the role of audio-visual media in improving the quality of learning for students studying Islamic Religious Education class VIII at Takhassus Al-Qur'an Middle School, Kalibeber. This research uses a qualitative method with a descriptive qualitative type. In this research, the techniques used for collecting data were observation, interviews and documentation. The subjects of the research used were class VIII Islamic Religious Education teachers and class VIII students at Takhassus Al-Qur'an Kalibeber Middle School. The results of the research show that the use of audio-visual media is very capable of improving the quality of student learning in Islamic Religious Education learning. During the learning process, students showed quite high interest in learning, then students were very enthusiastic about learning using audio-visual media. Based on the results of this research, it can be concluded that the use of audio-visual media to improve the quality of student learning in Islamic Religious Education is quite effective, both in terms of attracting students' attention and increasing satisfactory learning outcomes.
Pengaruh Parents Education Level Dan Lingkungan Belajar Terhadap Motivasi Belajar Siswa
Authors: Zahroh Aminatoz , Suwandi
Published: May 2024

This study aims to determine the influence of parents’ education level and learning environment on students’ learning motivation in Madrasah Aliyah Mamba’ul Ulum Megaluh Jombang. This research uses a quantitative approach with ex post facto research type. The sample in this study was 116 students as respondents, and used probability sampling with simple random sampling techniques. Data collection was carried out using a questionnaire distribution with 28 statement items. And using multiple linier regression test data analysis techniques. The results in this study show that. Firstly, there was no partial influence between parents’ education level on student learning motivation with a significance value of T= 0.090 > 0.005. Secondly, there is a partial influence between the learning environment on student learning motivation with a significance value of T= 0.001 < 0.005. Thirdly, there is a simultaneous influence between parents’ education level and learning environment on student learning motivation with a significance value of F= 0.001 < 0,005.
Analisis Penerapan Model Pembelajaran Project Based Learning Pada Pembelajaran Tematik
Authors: Nur Zuhdiyyah Afifah , Nurhidayati Indah , Praptiningsih
Published: May 2024

This research aims to determine: 1) the application of the Project Based Learning (PjBL) Learning Model, 2) the results of the application of the Project Based Learning (PjBL) Model, and 3) the inhibiting factors encountered in the application of the Project Based Learning model in class IV Thematic lessons in MI Al Islam Mranggen, Polokarto subdistrict, Sukoharjo Regency in 2023/2024. The type of research used was descriptive qualitative, the research subjects in this study were fourth grade students of Madrasah Ibtidaiyah Al Islam Mranggen and the data collection techniques used were observation, interviews and documentation. The research results show that: 1) in its application, teachers plan learning by creating a comprehensive Learning Implementation Plan (RPP). 2) the results of implementing PjBL show that project-based learning encourages students to think creatively and act systematically. 3) inhibiting factors in implementing PjBL were also identified, such as the allocation of time required that goes beyond class hours, limited tools and materials, teachers' lack of understanding of the PjBL model, students' unfamiliarity with project-based learning, and difficulties in determining projects that are appropriate to the learning model.
Relevansi Konsep Pendidikan Ki Hadjar Dewantara Dengan Pendidikan Islam Dalam Membangun Bangsa Mandiri Dan Berperadaban
Authors: Muslikh Mus
Published: May 2024

Jumlah penduduk tidak berbanding lurus dengan kualitas Sumber Daya Manusia adalah masalah terbesar, disamping radikalisme, terorisme, merosotnya konsep pemikiran tokoh pendidikan, krisis idiologi kebangsaan dan ke-Indonesia-an serta dampak teknologi informasi digital. Ki Hadjar Dewantara merancang manusia unggul, mandiri, dan berbudaya. Penelitian ini bertujuan menjelaskan problem Pendidikan di Indonesia, menganalisis konsep pendidikan Ki Hajar Dewantara dan Pendidikan Islam dalam merumuskan pendidikan bermutu, membangun bangsa mandiri dan berperadaban. Pengolahan data penelitian kualitatif melalui karya Ki Hajar Dewantara, kebijakan pemerintah dan Pendidikan Islam. Metode penelitian melalui kajian kepustakaan dengan pendekatan hermeneutika untuk mengartikan dan menganalisis pemikiran Ki Hadjar Dewantara dan Pendidikan Islam. Hasil penelitian ini adalah adanya benang merah konsep pendidikan Ki Hajar Dewantara dengan Pendidikan Islam sebagai kontribusi merancang sistem pendidikan nasional, membangun bangsa yang mandiri dan berperadaban.
Pengaruh Karakteristik Wajib Pajak, Kualitas pelayanan, Sanksi Pajak dan Inovasi Sistem Drive Thru terhadap Kepatuhan Wajib Pajak Kendaraan Bermotor Di Kota Pati
Authors: Listiana Afra Mei , Hernawati Retno Indah
Published: May 2024

Tujuan dari penelitian ini adalah untuk mengetahui pengaruh kesadaran wajib pajak, kewajiban moral,pengetahuan perpajakan, kualitas pelayanan, sanksi pajak dan sistem drive thru terhadap kepatuhanwajib pajak kendaraan bermotor di Kota Pati. Populasi dalam penelitian ini adalah wajib pajakkendaraan bermotor yang membayarkan pajaknya melalui sitem drive thru, sedangkan sampelnyaadalah wajib pajak kendaraan bermotor di Kota Pati berjumlah 100 orang. Metode pengambilandatanya menggunakan accidental sampling dengan cara penyebaran kuesioner. Teknik analisismenggunakan analisis regresi linear berganda. Hasil penelitian menunjukan bahwa variabel kesadaranwajib pajak, kualitas pelayanan, dan sistem drive thru tidak berpengaruh terhadap kepatuhan wajibpajak, sedangkan untuk variabel kewajiban moral, sanksi pajak dan pengetahuan perpajakanberpengaruh terhadap kepatuhan wajib pajak.
Pengaruh Profitabilitas, Leverage Dan Ukuran Perusahaan Terhadap Nilai Perusahaan
Authors: Ahmad Eva , Tito Marta Sugema Dasuki  , Euis Meilani
Published: May 2024

Sebuah perusahaan yang baik dapat terlihat dari nilai perusahaannya, saat ini persaingan bisnis antarperusahaan sangat ketat dan tidak lepas dari pengaruh perkembangan sosial, politik, teknologi danekonomi. Oleh karena itu perusahaan harus lebih efektif dan efisien dalam menjalankan kegiatanoperasional perusahaan serta meningkatkan kinerja dan berinovasi dengan meningkatkankesejahteraan pemegang saham serta meningkatkan pertumbuhan perusahaan dengan meningkatkannilai perusahaan. Pendekatan dalam penelitian ini adalah analisis deskriptif dan verifikatif denganmenggunakan data sekunder. Populasi dalam penelitian ini adalah perusahaan manufaktur subsektormakanan dan minuman yang terdaftar di Bursa Efek Indonesia tahun 2017-2021. Sementara itu, sampeldalam penelitian ini ditentukan dengan metode purposive sampling sehingga diperoleh sebanyak 19perusahaan selama 3 tahun. Hasil penelitian ini menunjukkan bahwa profitabilitas berpengaruhsignifikan terhadap nilai perusahaan, leverage berpengaruh signifikan terhadap nilai perusahaan danukuran perusahaan berpengaruh signifikan terhadap nilai perusahaan
Pengaruh Herding, Overconfidence, Risk Perception, Dan Personal Financial Needs Terhadap Keputusan Investasi Mahasiswa
Authors: Yanti Hilda , Triono Hermawan
Published: May 2024

Berinvestasi saham di pasar modal sudah banyak dilakukan oleh anak remaja millenial dengan usia kurangdari 30 tahun. Hal ini tercermin dari banyaknya anak muda yang telah memiliki pengetahuan khususnyadalam melakukan investasi saham di pasar modal. Riset yang dilakukan bertujuan untuk mengetahuipengaruh herding, overconfidence, risk perception serta personal financial need dengan keputusaninvestasi. Riset yang dilakukan menggunakan teknik survei terhadap mahasiswa program studi Akuntansidan Manajemen Universitas Dian Nuswantoro Semarang, Indonesia. Teknik pengumpulan sampel adalahpurposive sampling kemudian diperoleh 90 siswa. Analisa data memakai regresi linier berganda. Menuruthasil yang didapat faktor overconfidence, persepsi risiko serta kebutuhan finansial pribadi mempunyaipengaruh dengan keputusan investasi. Sedangkan, herding tidak mempunyai pengaruh dengan keputusaninvestasi.
COLLABORATION AND COMMUNICATION SKILLS OF ELEMENTARY SCHOOL STUDENTS’ IN INDONESIAN LANGUAGE LEARNING THROUGH RADEC
Authors: Fauziyyah Hilma Mustika , Prana Dwija Iswara  , Sopandi Wahyu , Sujana Atep
Published: May 2024

Collaboration and communication skills were essential as basic skills in the 21st century. This research described the forms of students’ collaboration skills in terms of the teamwork aspect, and the forms of students’ communication skills in terms of the verbal communication aspect, that emerge in Indonesian Language learning through RADEC. A qualitative approach with a case study type was applied in this study. The subjects were 3rd-grade students in one of the elementary schools in Bandung city. Data collection was carried out through observation, field notes, and interviews. Data was analyzed through data collection, data reduction, and conclusion. The results of this study show that 1) the form of student collaboration skills are through contributing to completing group assignments, help each other when having difficulties, appreciating the work of their friend in the group, and exchanging ideas and opinions, and 2) the form of student communication skills are being able to present the results of group discussions, being active argue and asking a question, using an appropriate language, respect each other’s opinions, brave and confident when speaking in front of the class. Collaboration in the discussion stage has yet to be visible; the reasons are that the students have yet to conclude the different opinions or answers even though the essence is the same, one person still dominates the discussion, and some students need to work on pre-learning questions. This research implied that Indonesian Language learning need to be designed to actively involved students to develop collaboration and communication skills by integrating innovative learning model such as RADEC.
THE IMPLEMENTATION CHALLENGES OF CHARACTER EDUCATION IN PRIMARY SCHOOLS
Authors: Yuliani Adit , Maftuh Bunyamin , Sapriya  , Sujana Atep , Hayati Rahma
Published: May 2024

Character education is the most important factor in shaping good character, especially in primary schools, which can include character values, manners, attitudes, and morals so that students can distinguish good and bad behaviour. Formal education is currently only focused on developing cognitive aspects so the affective aspects of students have not been applied thoroughly in schools. This study aims to analyse the challenges of implementing character education in primary schools. The method used was a systematic literature review (SLR), collecting articles related to problems and solutions in character education in primary schools. Data collected from as many as 181 articles and filtered and obtained into 10 articles through sinta accredited journals. Articles in this study were traced through the Google Scholar database from 2018-2023. Based on the research some students still have problems with poor character such as dishonesty during tests, not being disciplined to follow the rules at school, and not being independent in doing assignments. The implementation of character education must be instilled since elementary school and done well through the example of a teacher and routinely carried out by the school so that students can get used to actions that will become commendable characters that will have an effect in the future. Character cultivation can also be carried out by teachers by slipping character values through the integration of subjects to be taught.
READING INTEREST CHARACTER OF PROSPECTIVE ELEMENTARY SCHOOL TEACHERS AT UNIVERSITAS PENDIDIKAN INDONESIA
Authors: Lestari Asri Aditya , Sujana Atep , Sopandi Wahyu
Published: May 2024

Reading interest is one of the fundamental skills in language and is a highly effective learning activity for acquiring knowledge and literacy. Reading literacy is an essential skill, particularly for prospective educators; however, many students experience challenges in cultivating a reading habit. This research aims to: (1) describe the reading interest conditions of prospective teacher students at Universitas Pendidikan Indonesia (UPI), (2) elucidate the supporting and inhibiting factors for prospective teacher students (PTS) at UPI in their reading activities. This study employs a quantitative approach with a survey design. The research subjects are UPI PGSD (Elementary School Teacher Education) students. Data collection methods include questionnaires, surveys, and interviews. Data analysis involves descriptive analysis, frequency distribution, and percentage calculation. The findings reveal that: (1) the overall reading interest of PTS is categorized as low, (2) students' activities on campus before class hours mainly involve waiting and chatting with friends; only a small portion of students utilize their free time to read books or visit the library. (3) PTS' preferred books are novels and fiction, while scientific texts are less favored due to unappealing design and layout, (4) the time spent on reading books by PTS is relatively short, with less than 1 hour daily, and some do not allocate any time for reading, except when there are assignments or exams, (5) the major inhibiting factors for PTS in reading are internal, indicated by low reading habits or preferences for other interests over reading.
CRITICAL AND CREATIVE THINKING SKILLS IN ELEMENTARY SCHOOL MINIMUM COMPETENCY ASSESSMENT: LITERACY AND NUMERACY
Authors: Putri Sarah Anida , Andhini Nadiya Solastika , Putri Indah Amalia , Yanthi Novi , Sukmawati Wati
Published: May 2024

The purpose of this research was to identifying the occurence of critical thinking and crrative thinking skills indicators in the instruments of AKM (Minimum Performance Assessment). This research used qualitative descriptive method using documentary study. The research results showed that the content of AKM instrument in both literacy and numeracy questions were dominated by critical thinking skills appearance, with the major indicators of making deductions and considerations toward deduction, which belonged to the aspect of making inference. This indicator is the ability to make conclusions. The distribution of critical thinking skills indicators on literacy questions was 42% and 67% on numeracy questions. Meanwhile, the emergence of creative thinking aspects in literacy questions reached 3% and 5% in numeracy questions.
SIXTH GRADE STUDENTS' MISCONCEPTIONS ON DECIMAL NUMBERS THROUGH ROUTINE EXERCISE QUESTIONS
Authors: Abdurahman Lutfi , Herman Tatang
Published: May 2024

Mathematics is an important subject in elementary school because it is the basis for understanding more complex mathematical concepts in the future. One of them is that students need to study number material in basic mathematical concepts because it is very important to master and understand, for example it can be used in commerce, measurement and technology. However, in the field, elementary school students are still found to have misconceptions about understanding the concept of comparing, ordering or calculating decimal numbers. This research uses a qualitative approach with a case study method. The subjects of this research were 4 class VI students at an elementary school in Banyuresmi sub-district, Garut. Data was collected through observation, interviews, and providing routine practice question sheets. The findings in this research are, 1) Some students have difficulty understanding decimal numbers and ordering them as well as performing addition calculation operations, 2) Some students consider decimal numbers with more digits after the comma as larger numbers, 3) There are also students who make mistakes. Storing numbers after commas can cause errors in calculations. So the alternative solution that can be given is that teachers can identify the source of student misconceptions by providing diagnostic tests, using more interactive learning methods, providing case examples from everyday life, providing more and varied exercises, providing continuous feedback. and be constructive towards student answers, and facilitate discussions that focus on problem solving. This will help students understand the concept of decimal numbers more effectively and efficiently.
IDENTIFICATION OF MISCONCEPTIONS OF HUMAN SENSORY MATTER USING THE CERTAINTY OF RESPONSE INDEX (CRI) METHOD
Authors: Putri Helmalia , Desstya Anatri
Published: May 2024

The material of the five senses in humans is one of the materials that often causes errors for students in solving problems. This study aims to a) identify student misconceptions using the Certainty of Response Index (CRI) method of human sensory material in grade IV elementary school students, b) describe the causes of misconceptions. This study used a qualitative descriptive approach. This research was conducted at SD Negeri Srimulyo 2 Sragen, with the subject of the study being grade IV students as many as 15 children. The data collection techniques used are tests, interviews and documentation. The research instrument used is 15 questions accompanied by CRI that has been tested for validity and reliability. The wetness test in this study used a triangulation method, namely by comparing test results with interview results. The data was analyzed by referring to CRI categorization which was used to measure the level of confidence of learners about the answers they gave, so as to distinguish learners who guessed, understood concepts, did not understand concepts, and misconceptions. The results showed that a) as many as 41.93% or there were 6 students experiencing misconceptions. The highest misconception of this study is on the indicators of the function of the five senses of humans, while the lowest misconception is on indicators of understanding and types of five senses., b) there are several factors that cause misconceptions, namely the difficulty of students in memorizing the material, the lack of interest in learning students, and inappropriate teacher teaching methods. Thus, there is a need for innovation and evaluation for and teachers to improve the use of learning methods and media.
NARRATIVE TEXT WRITING SKILLS IN PGSD STUDENTS
Authors: Madu Fransiska Jaiman
Published: May 2024

Writing a narrative text that includes the main components of the text is not easy. This means that the students' ability in this regard is not entirely good. The evidence is that there are still components that are often ignored and do not appear in the text. The components in question are resolution and coda.  This study aims to assess students' ability to write correct and complete narrative texts. The type of research used is quantitative descriptive research. The sample of this research was 60 students of PGSD Unika Santu Paulus Ruteng. The technique used in collecting data is the test technique. Students were asked to write a narrative text with any theme and pay attention to the right narrative text structure such as orientation, complication, resolution, and coda. The text was analysed using observation technique. Based on the findings, the components of orientation, complication, and resolution in the narrative text get a good range. This is evidenced in the acquisition of student scores which are in the good category and some of them are in the excellent category. The only component of narrative text that needs to be improved is the coda. There are 40 out of 60 students whose scores are in the fair range. Therefore, the coda component needs to be trained. Therefore, the coda component needs to be trained.
Skema Kognitif Siswa dalam Menyelesaikan Soal Peluang Ditinjau dari Pendekatan Polya
Authors: Fitriana Ika Nur , Mampouw Helti Lygia
Published: May 2024

Skema kognitif adalah teori yang digunakan untuk mengetahui perubahan atau perkembangan pengetahuan seseorang. Penelitian ini bertujuan untuk mendeskripsikan skema kognitif siswa berkemampuan matematika tinggi, sedang dan rendah dalam menyelesaikan soal cerita peluang menggunakan pendekatan Polya. Jenis penelitian ini adalah kualitatif deskriptif yang dilaksanakan di kelas IX MTs N Ngablak Magelang. Subjek berjumlah 3 siswa masing-masing 1 subjek berkemampuan matematika tinggi, sedang dan rendah. Instrumen penelitian adalah peneliti sendiri yang dibantu oleh soal tes berisi soal cerita tentang peluang dan pedoman wawancara. Skema kognitif siswa diperoleh dari hasil penyelesaian soal cerita peluang yang dipandu tahapan Polya. Hasil penelitian menunjukkan bahwa ketika membaca soal cerita, ketiga subjek mengalami disekuilibrium. Subjek yang berkemampuan matematika tinggi dan sedang mengalami proses asimilasi sebelum ekuilibrium dalam memahami masalah, merencanakan strategi penyelesaian, mengeksekusi strategi penyelesaian dan memeriksa kembali jawaban. Subjek berkemampuan matematika rendah mengalami proses asimilasi dan akomodasi sebelum ekuilibrium dalam memahami masalah, merencanakan strategi penyelesaian dan mengeksekusi strategi, tanpa memeriksa kembali jawaban.
A cognitive scheme is a theory used to determine changes or developments in a person’s knowledge. The purpose of this research is to describe the cognitive scheme of students with higher, medium, and lower mathematical abilities in solving probability problems using the Polya approach. This is a descriptive qualitative research delete conducted in the 9th grade of MTs N Ngablak Magelang. Subjects in this research were 3 students who had a high, medium and low mathematical ability. The research instrument is the researchers who helped by probability question tests and interview guidelines. Students' cognitive schemes are obtained from the results of the solving probability question test guided by the Polya stage. The results showed that three subjects experienced a disequilibrium condition when reading the word problems. Subjects with high and medium mathematical abilities were experiencing an assimilation process before equilibrium in understanding problems, planning strategy, execute the strategy and checking answers. Subjects with low mathematical abilities experience assimilation and accommodation before equilibrium in understanding problems, planning resolution strategies and executing strategies, without checking the answers.
Pendekatan Open-Ended dalam Membelajarkan Kemampuan Koneksi Matematis Siswa
Authors: Lubis Roslian , Harahap Toharuddin , Nasution Dwi Putria
Published: May 2024

Masalah dalam penelitian ini adalah rendahnya Kemampuan Koneksi Matematis (KKnM) siswa dan pembelajaran terlaksana cenderung bersifat konvensional. Suatu alternatif mengoptimalkan kemampuan bermatematika siswa dan perbaikan proses pembelajaran yaitu mempertimbangkan penerapan pendekatan pembelajaran dengan pendekatan open-ended. Penelitian ini bertujuan untuk mendeskripsikan apakah terdapat interaksi Kemampuan Awal Matematika (KAM) dan gender dengan pendekatan pembelajaran dalam membelajarkan KKnM siswa. Penelitian merupakan penelitian eksperimen semu dengan rancangan Nonequivalent Control Group Design. Instrumen yang digunakan adalah essay test KKnM siswa. Populasi penelitian adalah siswa kelas VII SMP Negeri 5 Padangsidimpuan sebanyak 9 rombongan belajar dan sampel penelitian adalah siswa kelas VII-5 dan VII-6 yang masing-masing kelas berjumlah 28 siswa. Hasil penelitian melalui uji hipotesis dengan anava dua jalur menunjukkan tidak terdapat interaksi antara KAM dengan pendekatan pembelajaran dalam membelajarkan KKnM siswa dan tidak terdapat interaksi antara gender dengan pendekatan pembelajaran dalam membelajarkan KKnM siswa.
The problem in this study was the low of students' Mathematical Connection Ability (MCA) and learning that tends to be conventional. An alternative to optimizing students' mathematical abilities and improving the learning process is to consider the applying of a learning approach to the open-ended approach. This study aims to describe is there any interaction between the Mathematical Prior Ability (MPA) and gender with the learning approach in teaching the students’ MCA. The research was quasi-experimental research with Nonequivalent Control Group Design. The used instrument was the students’ mathematical connection ability essay test. The population of the research was 7th-grade students of SMP Negeri 5 Padangsidimpuan with 9 groups study and the sample of the research were students of grades VII-5 and VII-6, where the number of each class was 28 students. The research results by hypothesis testing with two-way Anava showed that there was no interaction between the MPA with the learning approach in teaching the students’ MCA and there was no interaction between gender with the learning approach in teaching the student’ MCA.
Pengaruh Penggunaan Konteks Daun terhadap Hasil Belajar Siswa
Authors: Lisnani
Published: May 2024

Latar belakang penelitian yaitu kesulitan dalam mempelajari materi pecahan, dengan tujuan mengetahui pengaruh penggunaan konteks daun sebagai solusi permasalan materi pecahan terhadap hasil belajar pecahan siswa SD Kelas IV. Jenis penelitian adalah penelitian eksperimen. Populasi dalam penelitian ini berjumlah 76 orang yang terdiri 3 kelas yaitu IV A, IV B, dan IV C. Sampelnya berjumlah 50 orang yang terdiri dari kelas IV A dan IVB masing-masing berjumlah 25 orang. Penelitian ini dilakukan di SD Negeri 42 Palembang. Teknik pengumpulan data menggunakan wawancara yang dilakukan terhadap guru terkait dengan penggunaan konteks daun pada materi pecahan, tes untuk mengukur hasil belajar siswa, dan dokumentasi. Teknik analisa data menggunakan uji normalitas, uji homogenitas, dan independent sample t-test melalui SPSS. Hasil dari penelitian ini adalah adanya pengaruh penggunaan konteks daun terhadap hasil belajar pecahan siswa SD kelas IV. Penggunaan konteks daun sangat membantu siswa dalam pembelajaran matematika pada topik pecahan.
The background of this study is the difficulty in studying fracton material, with purpose about the use of leaves on the learning outcomes of elementary school students' fractional grades IV. This type of research used in this study is research. The population in this study was 76 people consisting of 3 classes namely IV A, IV B, and IV C. The samples were collected 50 people consisting of classes IV A and IVB, each of which could be taken, 25 people. This research was conducted at 42nd SD Negeri Palembang. Data collection techniques using interviews conducted with teachers related to the use of context in fraction material tests to measure student learning outcomes and implementation. Data analysis techniques using homogeneity test, normality test, and independent sample t-test through SPSS. The results of this study are the results of the use of leaf interactions on the learning outcomes of elementary school students' fractional grades IV.