bluuebunny/crossref_metadata_2025 huggingface dataset:
HEAT TRANSFER IN COUPLE STRESS TWO-FLUID FLOW MODEL: EFFECTS OF MODIFIED HEAT FLUX, ELECTROMAGNETIC FORCE, AND UNEVEN HEAT SOURCE/SINK
Authors: Gajjela Nagaraju , Garvandha Mahesh , Kumar Devendra
Published: February 2023

The aim of the present investigation is to study the variations due to uneven heat flux and an electromagnetic field on the couple stress fluid flow of a binary mixture traveling through a stretched cylindrical surface with developed heat flux. The partial differential equations governing the fluid transport system are derived into a set of ordinary differential equations using suitable nondimensional parameters and similarity transformations, which could then be computationally solved using the Runge-Kutta Fehlberg method. The main aspect of the current problem is that it discusses the entire scenario in terms of the liquid and dust phases. Using the MATLAB code, a graphical representation of the relevant parameters is obtained. The results were carried out for our system, and it reveals that the velocity and thermal gradient of both the phases of fluid and dust behave in an opposite trend for rising mass concentration, where the curvature parameter makes the rise in the same manner. Furthermore, the thermal transport profiles for both phases decline for the rising thermal relaxation parameters.
UNDERWATER CHANNEL RECOVERY SCHEME IN DELAY-DOPPLER DOMAIN USING MODIFIED BASIC PURSUIT DENOISING WITH PRIOR KNOWLEDGE
Authors: Kumar Anand , Kumar Prashant
Published: February 2023

The signal denoising problem is a major challenge in underwater communication (UWC). The denoising problem in UWC has been addressed, where channel estimation approaches are provided in terms of sparsity, time, and frequency. Convex optimization is currently widely used for recovering sparse signals from compressed data. A nonuniform sparse 2D frequency-domain channel recovery scheme in the delay-Doppler domain representation is provided as a mathematical framework to solve channel estimation problems. Compressive sensing (CS) at higher Doppler frequencies (high channel mobility) and near full-rate sampling at lower Doppler frequencies (stagnant channel) are used to recover both rapid-fluctuating as well as slow-varying channel components with high precision. The prior knowledge of modified basic-pursuit denoising channel estimation based on nonuniform CS and sparsity-constrained least-squares has been discovered, where l1-minimization of element wise multiplication of the equal-size vectors is performed. The proposed channel estimation scheme is compared with conventional CS over a sampling ratio, ambient noise level, and observation window length. The acoustic channel simulations and experimental channel data from SPACE08 are used to verify prior knowledge provided by the proposed scheme. Simulation results confirm the superiority of the proposed algorithm for channel estimation over the existing ones.
The mechanical implementations in three kinds of color-changing beetle elytra
Authors: Wu Wei , Wang Yueming , Sun Jiyu
Published: February 2023

With superior adaptability, some elytra as modified forewings can provide mechanical protection for the underlying hind wings and soft body while changing in color in a dynamically natural environment. There are mainly three color-changing styles for elytra: angle-dependent, irreversible and reversible color changes. Here, Popillia indgigonacea Motsch, Sagra femorata purpurea Lichtenstein and Dynastes tityus were chosen as specimens to investigate the relationship between the color formation of the three color-changing styles and the mechanical properties of light weight and high strength. The optical and nanomechanical properties of purplish red S. femorata purpurea Lichtenstein were studied by using an angle-resolved spectroscopy system and a nanoindenter, respectively. In finite-element analysis, three geometrical structural models – namely, color-change-relevant, color-change-irrelevant and whole-elytron models – were designed, and then the mechanical properties of six coupled bionic models of each beetle were investigated. The multilayer, convex closures and photonic crystal in the epicuticle can complete the dynamic presentation of structural colors by interference, scattering and photonic bandgap as they when resourcefully resist the external forces in low/high stress and strain with high/small elastic modulus and hardness. Meanwhile, other microstructures of multilayer and trabecular hollow were reasonably constructed to display co-operatively the mechanical properties of light weight and high strength.
Binnie lecture 2022: How reservoirs have shaped my career and may shape our future
Authors: Hill Tim
Published: February 2023

The 2022 Binnie lecture was delivered to the British Dam Society on 16 September 2022. I began by looking at my introduction to reservoirs as a teenager. I then reviewed a variety of reservoir projects that have impacted my career and, more particularly, how they were shaped by social and environmental issues. Finally, I examined how my experience can influence the future of dam building in the UK.
Distant Reading Two Decades On: Reflections on the Digital Turn in the Study of Literature
Authors: Primorac Antonija , Arias Rosario , Patras Roxana , Eglāja-Kristsone Eva , van Dalen-Oskam Karina , Herrmann Berenike , Schöch Christof , François Pieter
Published: February 2023

This article examines the ways in which distant reading, as a facet of the digital turn in the humanities, has affected the study of literature, with particular attention to the ways the digital turn has impacted the examination of authorship, genre, and style. In the process, it reflects on the ways in which distant reading developed both as a concept in the history of world literature and as a methodological approach that contributed to the evolution of computer-assisted study of literature.Cet article examine les façons dont la lecture à distance, en tant que facette du virage numérique dans les sciences humaines, a affecté l’étude de la littérature, avec une attention particulière aux façons dont le virage numérique a influencé l’examen de la paternité, le genre et le style. Dans le processus, il réfléchit sur les façons dont la lecture à distance a développé à la fois comme un concept dans l’histoire de la littérature mondiale et comme une approche méthodologique qui a contribué à l’évolution de l’étude assistée par ordinateur de la littérature.
Book Review: Anne-Katrin Weber, Television Before TV: New Media and Exhibition Culture in Europe and the USA, 1928-1939 (Amsterdam: Amsterdam University Press, 2022).
Authors: Geddes Kevin
Published: February 2023

Anne-Katrin Weber, Television Before TV: New Media and Exhibition Culture in Europe and the USA, 1928-1939 (Amsterdam: Amsterdam University Press, 2022), pp. 390,ISBN: 9789463727815 (hb), €106; ISBN 9789048544813 (ebook PDF Open Access), €0.00.                                
A difícil estranheza de uma cidade do smart
Authors: Maffei Luis Sant'Anna
Published: February 2023

Smart, numa meritocracia neoliberal, é palavra-chave da mentalidade contemporânea. Dela vem a ideia de smart city. Este ensaio pretende investigar alguns efeitos do paradigma smart em nossa relação com as cidades, especialmente se tivermos em mente a infamiliaridade que a urbe pode ensejar e que a vigilância tende a abolir. O smartphone, que hoje medeia a relação dos corpos e mentes com a cidade, talvez seja a mais clara evidência da perda da presença e da estranheza no estar no urbano.
Os modos de captação da fotografia jornalística
Authors: Pereira Silvio da Costa
Published: February 2023

O artigo é um recorte da pesquisa doutoral do autor – de caráter etnográfico e focada nas transformações do fotojornalismo no cenário contemporâneo – e aborda os variados modos de captação das fotografias jornalísticas que foram observados em campo. Percebemos que a produção de imagens sem nenhuma interferência externa é apenas um entre outros modos possíveis, o que aponta um tensionamento entre a agência do jornalista e de outros atores que influem na construção do significado das imagens.
An imago-ecological turn in the assessment of a technical reality
Authors:   St. Petersburg State University, Ocheretyany Konstantin A. , Savchuk Valery V. ,   St. Petersburg State University
Published: February 2023

An unprecedented turn is taking place before our eyes: the technical environment, having changed, participates in the substitution of the sphere of the imaginary for the sphere of the technical in the digitalization mode. Images bring us together and hold us, becoming the focus of the essence of the digital and material world. The article outlines the basics of the visual-ecological approach in creating a human-sized digital environment. By giving ourselves to interfaces and their technical requirements, we hope that we have won freedom, time, life. In fact, we can lose everything if the images we create quantitatively express our technological capabilities to a greater extent than qualitatively deepen our own human experience. We find ourselves in a situation similar to the archaic one, when a person, through the rituals and techniques invented by him, tamed his own dreams, his fantasies, and through them himself, pacifying the demons of imagination. Today, technical images are more insatiable than archaic demons because they claim a massive intensification of experience, but at the same time lead to an explosion of the imaginative, to burnout, chronic disinterest, to boredom. We produce images better than we know how to inhabit them. We have industrial technologies for their creation, but there are no body techniques adequate to their living. Theory should change its approach to technical images: think not about them, but together with them, about those techniques of the body and the worlds that they discover, about the criteria and requirements that they set, about where they direct our desires and where they inspire our dreams. It is assumed that, in order to understand the potential of visual ecology, one should take into account a number of methods related to the interpretation of bodily experience: (1) the method of topological reflection. The digital image apparently removes one of the fundamental interactions of the Universe -gravitational. We cannot resist the attraction of the digital image until we recreate it for understanding at the conceptual level, until we recreate the context and connect the growth of digital suggestion with the possibilities of the environment; (2) the method of somatic epistemology. The body is a graveyard of signs, it bears meta processes from which it is already culturally and technically excluded, but they continue to work, they constitute the cultural archive of the body, and new technologies do not specifically respond to practical intentions, but to the actualization of archived experience, which suddenly becomes important in a new environment; (3) the method of empirical constructivism: thinking through the evolutionary conditions of digital objects, the principle of their construction from information data in the world of algorithms and glitches, taking into account the peculiarities of human experience.
Public administration practices in the visual arts of the 1930s (on the example of the Taras Shevchenko Kazakh National Art Gallery)
Authors:   East Kazakhstan Regional Architectural, Ethnographic and Natural Landscape Museum-Reserve, Rahmatulina Evgenia Yu.
Published: February 2023

The present work aims to identify the features of public administration, their real practices in the field of visual arts on the example of the Kazakh State Art Gallery named after T.G. Shevchenko in the second half of the 1930s and to make adjustments to the existing historiographical gap. As a source base, office documents deposited in the Central State Archive of the Republic of Kazakhstan (TsGA RK) in Fund 1792, Kazakh State Art Gallery named after T.G. Shevchenko, and Fund 1736, Organizing Committee of the Union of Soviet Artists of the Kazakh SSR, were mainly used. Orders, resolutions, instructions, information letters dated 1937-1939, emanating from the Department of Arts Affairs under the SNK of the Kazakh SSR and the All-Union Committee for Arts Affairs under the SNK of the USSR were analyzed. Archival sources made it possible to identify the range of issues supervised by the departments, to determine the degree of integration of the cultural institution into the all-Union museum system, to highlight the situation regarding the replenishment of museum funds and the personnel issue. The methodological basis was the theory of modernization. A systematic approach was used to implement the research objectives. The study shows that, due to the historically prevailing conditions, professional visual arts did not receive a proper development on the territory of the Central Asian ethnoregion. The peripheral position of art, which persisted for quite a long time after the revolution, began to change by the mid-1930s with the coming to power of L.I. Mirzoyan (1897-1939), the first secretary of the Kazkraikom of the CPSU (b). During this period, the process of the all-Union restructuring of the management system in the field of culture coincided with the formation of the republican artistic infrastructure. The Kazakh National Art Gallery in Alma-Ata was made the profile center responsible for the presentation and popularization of visual arts in the republic. In general, public administration in the field of visual arts was implemented in line with the development of the state program of assistance to national suburbs through the formation and development of regional art infrastructure, accelerated growth of the museum art fund, with a parallel strengthening of integration into the all-Union socio-cultural space. At the same time, the analysis of the main elements of management testifies to their belonging to the administrative and command management system, with the inherent cumbersomeness of the bureaucratic apparatus, adherence to the principles of personnel appointments, and not electability, the presence of power centralization, which left minimal opportunities for the manifestation of initiative on the ground.
On the relationship between Konstantin Pobedonostsev and Mikhail Katkov in the 1870s
Authors:   Moscow Polytechnic University, Perevalova Elena V. , Perevalov Valery V. ,   Moscow Polytechnic University
Published: February 2023

The article examines the relationship between Konstantin Pobedonostsev, the chief prosecutor of the Holy Synod, and Mikhail Katkov, an authoritative conservative publicist, the editor of the influential newspaper Moskovskie Vedomosti, in the 1870s. The relevance of the stated problem is due to the growing interest in the history of Russian conservative journalism and its role in the life of Russia in the second half of the 19th century. The novelty of the study consists in the introduction into scholarly discourse of little-studied material, in particular, the letters of Boleslav Markevich and Pobedonostsev. The analysis of the relations between the high-ranking official and the authoritative journalist in the years preceding the culminating period of their political careers shows the characteristic features of the political life of Russia in the 1870s, to determine the role of personal ties between representatives of the bureaucratic elite and the leaders of domestic journalism. On the basis of poorly studied archival materials, diary entries, letters and memoirs of contemporaries, the authors consider forms of interaction between Pobedonostsev and Katkov. The authors prove that, during this period, Pobedonostsev did not provide Katkov and his newspaper with significant assistance: he did not take part in finding contacts necessary for the journalist in the entourage of Alexander II and in the government, did not try to influence the decisions of the highest censorship bodies, did not provide information support, etc. On the contrary, Pobedonostsev himself needed Katkov's support during these years and could only provide moral assistance to the journalist, expressing in personal correspondence his solidarity and sympathy with his speeches in the newspaper Moskovskie Vedomosti. Katkov opposed his decisive actions, assertiveness, purposefulness, and desire to achieve the result he needed in everything to Pobedonostsev's pedantry, habit of formalism, standard, and desire to avoid significant changes. As a result, despite the closeness of views that evolved to conservatism during this period and frankness in expressing their dissatisfaction with the government course to each other, Pobedonostsev and Katkov had growing internal contradictions and misunderstandings, which eventually led to disunity between them in the 1880s, when they both began to play major roles in the entourage of Emperor Alexander III. The authors conclude that the union of Pobedonostsev and Katkov, which seemed strong and indestructible to many contemporaries, became fragile and unstable back in the 1870s, and did not contribute to the formation of a unified and clear program of Russian conservatives.
Vozes silenciadas: vivências de pessoas que convivem com HIV na província de Gaza, Moçambique
Authors: Mazuze Bento Saloio Daniel , Borges Thayna Davi de Souza , Lobo Natália Lemes Sixel , Vázquez Pedro Araújo , Langa Stella Manhiça , Polejack Larissa
Published: February 2023

INTRODUÇÃO: No mundo, cerca de 16 milhões de mulheres vivem com HIV, muitas delas em idade reprodutiva. Esses níveis de infecção e as taxas de transmissão vertical ainda trazem grandes preocupações, devido à pouca intervenção terapêutica precoce em muitos países africanos. Em Moçambique, país da África Subsaariana, os índices de prevalência do HIV são de 13,2%, colocando o país em segundo lugar na conta de novas infecções, atrás apenas da África do Sul. OBJETIVO: Conhecer as experiências e as principais dificuldades vivenciadas pelas gestantes ou lactantes soropositivas e seus parceiros sexuais no contexto específico. METODOLOGIA: Estudo qualitativo realizado em Chókwè na província de Gaza- Moçambique. Foram realizadas entrevistas semiestruturadas com mulheres gestantes ou lactantes que vivem com HIV, com seus parceiros sexuais e com profissionais de saúde. Foram realizados grupos focais com mães mentoras e entrevista em grupo com pais mentores, as quais ocorreram no segundo semestre de 2021. As entrevistas e os encontros foram gravados com gravador de voz e transcritas na íntegra. As informações passaram pelo processo de análise temática. RESULTADOS: Participaram do estudo dez mulheres gestantes ou lactantes soropositivas e um parceiro sexual; treze mães mentoras e dois pais mentores; duas enfermeiras de Saúde Materno Infantil e uma psicóloga. Os achados revelam que as participantes associam o diagnóstico do HIV ao teste de gravidez ou ao parto, e o período da gestação e da amamentação é marcado pelo medo de infectar o filho com o vírus. As mulheres escondem seu estado sorológico do marido, da família e da comunidade por medo das consequências relacionadas com normas sociais rígidas e interferência de fatores culturais. Os resultados dos profissionais de saúde trouxeram aspectos similares aos das mulheres vivendo com HIV, entretanto, ressaltam a falta de profissionais para oferecer atendimento de qualidade. Constatou-se que na unidade de saúde e na comunidade utilizam palestras como única estratégia de educação em saúde, apesar da pouca eficácia. CONCLUSÕES: Observou-se que ainda existem muitas barreiras para prevenção da transmissão vertical em Moçambique, em especial, a qualidade do aconselhamento e dificuldades de acesso ao serviço, seja por falta de recursos ou pelas normas sociais e familiares que não reconhecem a autonomia da mulher. É necessario apoiar as mães que não desejam amamentar e aquelas que tem maior vulnerabilidade socioeconômica. Recomenda-se maior investimento nas estratégias de apoio psicossocial e envolvimento comunitário, utilizando alternativas como a Terapia Comunitária Integrativa (TCI) e Educação Popular. Sugere-se o envolvimento de lideranças comunitárias no processo de desenvolvimento de um programa de intervenção e promoção de saúde mental para mulheres gestantes ou lactantes soropositivas.
Echocardiographic and hemodynamic changes in patients with high-grade varicocele
Authors: Ergani Batuhan , Eyiol Azmi , Karabiçak Mustafa , Gitmez Mesut , Körez Muslu Kazım
Published: February 2023

Varicocele is abnormal tortuosity and dilatation of the pampiniform plexus veins within the spermatic cord. Varicocele is associated with testicular atrophy, hypogonadism, impaired semen analysis values, or decreased testosterone production. Varicocele is a progressive disease and should be treated because it may be a systemic disease that can be associated with cardiovascular abnormalities. We hypothesize in this study that cardiovascular and hemodynamic pathologies may occur in varicocele patients. In this prospective, multicentric, multidisciplinary study, patients diagnosed with high-grade left varicocele in the urology clinic underwent semen analysis, total testosterone determination, and scrotal Doppler ultrasonography. In addition, blood pressure measurement and echocardiographic evaluation were performed by blinded cardiologists in both the varicocele patients and the healthy control group. The study was carried out with 103 varicocele patients and 133 healthy individuals who formed the control group. Diastolic blood pressure (P = 0.016), left ventricular end diastolic (P < 0.001) and systolic diameter (P < 0.001), ejection fraction (P < 0.001), pulmonary arterial pressure (P < 0.001), and aortic distensibility (P < 0.001) values were significantly higher in varicocele patients compared with controls; interventricular septum wall thickness (P = 0.022), aortic systolic (P < 0.001) and diastolic diameter (P < 0.001), aortic systolic (P < 0.001) and diastolic diameter index (P < 0.001), and aortic stiffness index (P < 0.001) values were significantly lower in varicocele patients. The mean aortic distensibility of non-normozoospermic group was lower than that of normozoospermic group (P = 0.041). There was no statistically significant relationship between thickest vein diameter in spermatic cord and cardiological parameters. This study showed that symptomatic patients with high-grade varicocele had a higher risk of cardiovascular and hemodynamic disease. We recommend that men with high-grade symptomatic varicocele with impaired semen analysis undergo cardiovascular and hemodynamic evaluation regardless of their spermatic vein diameter.
Positive Effects of Plyometric Training on Increasing Speed, Strength and Limb Muscles Power in Adolescent Males
Authors: Putera Shidqi Hamdi Pratama , Setijono Hari , Wiriawan Oce , Nurhasan  , Muhammad Heryanto Nur , Hariyanto Agus , Sholikhah Anindya Mar’atus , Pranoto Adi
Published: February 2023

The study purpose was to prove the effectiveness of a plyometric jumping jack, countermovement jump, and tuck jump training in increasing speed, strength, and limb muscle power in adolescent males.
Materials and methods. A total of 33 subjects from Santri Pondok Pesantren An-Nur 2 Al-Murtadlo Malang Regency, males, aged 18-22 years voluntarily participated in the study. The subjects were divided into 3 intervention groups, namely PJJ (n = 11, plyometric – jumping jacks), PCJ (n = 11, plyometric – countermovement jump), and PTJ (n= 11, plyometric – tuck jump). Plyometric jumping jacks, countermovement jump, and tuck jump training was conducted for 30 minutes/session, intensity 70-90% 1-RM, frequency 3x/week for 6 weeks. Measuring limb muscle power used the Jump Meter Digital (MD) Test, measuring limb muscle strength used the Back & Leg Dynamometer, and measuring speed used the 30 m running test. The data analysis technique used the Paired Sample T-Test with a significance level of 5%.
Results. The results obtained were as follows: mean speed between pretest and posttest on PJJ (4.56±0.16 vs. 4.36±0.15 second, (p ≤ 0.001)), PCJ (4.61±0.15 vs. 4.54±0.14 second, (p ≤ 0.001)), PTJ (4.55±0.19 vs. 4.48±0.18 second, (p ≤ 0.001)), limb muscle strength between pretest and posttest in PJJ (111.45±18.94 vs. 139.27±20.23 kg, (p ≤ 0.001)), PCJ (117.73±21.03 vs. 129.55±19.24 kg, (p ≤ 0.001)), PTJ (115.46±17.66 vs. 125.91±18.62 kg, (p ≤ 0.001)), limb muscle power between pretest and posttest in PJJ (422.86±34.61 vs. 493.12±49.24 joule, (p ≤ 0.001)), PCJ (410.70±38.25 vs. 462.20±38.55 joule, (p ≤ 0.001)), PTJ (404.20±45.63 vs. 441.78±46.90 joule, (p ≤ 0.001)).
Conclusions. Based on the results of the study, it was concluded that plyometric jumping jacks, countermovement jumps, and tuck jumps performed for 30 minutes/session, with an intensity of 70-90% 1-RM, frequency 3x/week for 6 weeks are effective in increasing limb muscle power, strength and speed.
Correlation of Body Mass Index, Physical Activity, and Physical Fitness in Elementary School Students
Authors: Ma’arif Ilmul , Nurhasan  , Suroto  , Setyawan Risfandi , Basuki  , Zen Mohammad Zaim , Prasetiyo Rahayu , Saputra Yudi Dwi , Synthiawati Novita Nur
Published: February 2023

The purpose of this study was to determine the conditions and the relationship between body mass index (BMI), physical activity, and physical fitness.
Materials and methods. This type of research was a cross-sectional study which was an observational study that analyzes data with predetermined variables and respondents. The number of respondents was 191 elementary school students in Kecamatan Ploso, Kabupaten Jombang, East Java, Indonesia. BMI was calculated by dividing weight in kilograms (kg) by height in meters squared (m2), measurement of physical fitness used 20-meter Multi-Stage Fitness Test (MSFT) test, whilst physical activity test used a Physical Activity Questionnaire for Older Children (PAQ-C). The data analysis used the Pearson product-moment model using SPSS version 21.0 with a significance level of 5%.
Results. The correlation analysis results in this study indicate that there was a positive correlation between BMI and physical activity (r=0.176; p-value=0.015), BMI and physical fitness (r=0.151; p-value=0.037), and physical activity and physical fitness (r=0.142; p-value=0.049).
Conclusions. Based on the study results, it was showed that there was a positive correlation in each variable (body mass index, physical activity, and physical fitness).
Impact of New Living Environment on Reactive Stress Tolerance in Preadolescent Sports Trainees of Jharkhand
Authors: Pahan Manohar Kumar , Malhan Vikrant , Nepoleon Yendrembam
Published: February 2023

Study purpose. The purpose of the study was to examine the effect of background experience related to family demography on the selected parameters of reactive stress tolerance in athletes who strictly lived in a training academy for a minimum of two years.
Materials and methods. A total of 200 male sports cadets were chosen by the Jharkhand State Sports Promotion Society in Ranchi, with chronological age ranging from 11 to 14 years and 4 years of training. The demographic information (the size of the family, the type of family, the order of birth, the family monthly income, and the location of the home) were considered as independent variables. Stress tolerance parameters (PR correct, PR incorrect, PR omitted, and median reaction time) were chosen as dependent variables. The Shapiro-Wilk test was used to determine data normality, while Levene's test was used to determine homogeneity. The Mann-Whitney U and Kruskal-Wallis tests were used to draw comparisons. For post-hoc comparison, Dunn's test with Holm correction was employed. The threshold for significance was set at p = 0.05.
Results. The percentile rank of correct responses (p = 0.005) and median reaction time (p = 0.033) related to birth orders showed significant results. Other factors related to family information and reactive stress tolerance were not significant.
Conclusions. According to the findings, it was concluded that being in new environment for a long duration reduced the early living experience related to family demography but effect of birth order still continued.
ANALISIS KETERAMPILAN PROSES SISWA SD MELALUI PENERAPAN SKENARIO PEMBELAJARAN BERBASIS PCK TENTANG GAYA GRAVITASI
Authors: Rahman Ina Oktarina , S Rustono W , Hamdu Ghullam
Published: February 2023

Skenario pembelajaran diperlukan sebagai panduan secara teknis operasional bagi guru dalam mengembangkan pembelajaran. Analisis PCK pada konsep gaya gravitasi bumi memberikan gambaran tentang bagaimana guru mengembangkan konsep IPA dan bagaimana mengajarkannya, sehingga dapat mengembangkan keterampilan proses siswanya. Menganalisis keterampilan proses siswa kelas V SDN 1 Pasirtamiang melalui penerapan skenario pembelajaran berbasis PCK tentang gaya gravitasi menjadi tujuan pada penelitian ini. Metode deskriptif kuantitatif digunakan dengan alat pengumpulan data berupa pedoman observasi, tes dan wawancara. Hasil penelitian menunjukkan bahwa keterampilan proses yang dimiliki siswa yaitu melalui observasi sebesar 87% (sangat tinggi) dan melaui tes sebesar 81% (sangat tinggi), dan keterlaksanaan skenario pembelajaran berbasis PCK secara umum guru dapat melaksanakan tahapan pengajaran dengan baik dan siswa lebih memahami konsep gaya gravitasi bumi.
PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA BERBASIS KARAKTER PADA MATERI PERUBAHAN KENAMPAKAN BUMI DAN BENDA LANGIT
Authors: Mulyani Sri
Published: February 2023

Penelitian ini merupakan penelitian pengembangan dengan menggunakan model 4D Thiagarajan yang telah dimodifikasi. Yang dikembangkan adalah perangkat pembelajaran yang meliputi silabus, rencana pelaksanaan pembelajaran, lembar kegiatan siswa, buku siswa, dan instrumen tes. Teknik pengumpulan data menggunakan lembar wawancara, lembar obserasi, lembar validasi perangkat pembelajaran, lembar angket penanaman karakter, lembar pengamatan keterlaksanaan pembelajaran dan evaluasi hasil belajar. Hasil penelitian menunjukkan bahwa perangkat pembelajaran yang dikembangkan valid, praktis, dan efektif. Kevalidan dan kepraktisan ditunjukkan oleh hasil validasi ahli yang menunjukkan nilai 4.46; sedangkan keefektifan pembelajaran ditunjukkan dengan penghitungan normal gain yang menunjukkan 48.8% siswa memperoleh nilai yang cukup efektif; nilai-nilai karakter dalam diri siswa menunjukkan kategori baik, serta respon siswa terhadap pembelajaran adalah positif dengan sebanyak 87.8% siswa menilai positif terhadap pelaksanaan pembelajaran.
DESAIN DIDAKTIS KONSEP LUAS DAERAH LAYANG-LAYANG PADA PEMBELAJARAN MATEMATIKA KELAS V SEKOLAH DASAR
Authors: Setiaji Aji , Nur’aeni Epon , Giyartini Rosarina
Published: February 2023

Penelitian ini dilatarbelakangi adanya kesulitan belajar (learning obstacle) siswa terkait konsep luas daerah layang-layang. Beberapa siswa kebingungan saat dihadapkan pada soal yang berbeda dengan contoh. Untuk mengantisipasi hal tersebut perlu disusun suatu desain didaktis yang dapat membimbing siswa memahami suatu konsep. Tujuan penelitian adalah menyusun desain didaktis untuk mengatasi learning obstacle. Penelitian ini menggunakan metode kualitatif berupa penelitian desain didaktis. Subjek penelitian ini adalah tiga Sekolah Dasar Negeri di Kota Tasikmalaya. Pengumpulan data dilakukan dengan teknik triangulasi. Selain instrumen utama, disusun instrumen tambahan berupa soal studi pendahuluan dan LKS. Hasil penelitian adalah terciptanya desain didaktis yang dapat menjadi alternatif pembelajaran.
ANALISIS RESPONS SISWA TERHADAP FOLKLOR THE GOLDEN CUCUMBER
Authors: Amelia Resti , Indihadi Dian , Apriliya Seni
Published: February 2023

Abstrak: Penelitian ini  mendeskripsikan kemampuan respons siswa kelas V Sekolah Dasar terhadap cerita The Golden Cucumber ditinjau dari dimensi respons, yakni predicting, describing dan  connecting.  Latar belakang penelitian ini adalah berawal dari keprihatinan peneliti terhadap minimnya siswa untuk memperoleh pengalaman sastra khususnya dalam pembelajaran Bahasa Inggris. Melibatkan siswa pada sastra salah satunya dapat dilakukan melalui respons, memberikan keleluasaan pada siswa untuk menaggapi bacaan sastra yang dibacanya. Sumber bacaan yang cocok untuk tahap usia ini adalah memanfaatkan folklor atau dongeng cerita rakya misalnya cerita rakyat “The Golden Cucumber”, karena sesungguhnya folklor  memiliki fungsi dan nilai edukatif terutama bagi anak.
Analisis Soal Pilihan Ganda dengan Menggunakan Pemodelan RASCH untuk Mengukur Kemampuan Siswa dalam Mengurutkan Bilangan Pecahan di Sekolah Dasar
Authors: Tyas Efty Hatining , Hamdu Ghullam , Haki Pranata Oyon
Published: February 2023

Penelitian ini dilatarbelakangi oleh sulitnya menentukan nilai pecahan dengan pembilang dan penyebut berbeda ketika akan mengurutkan bilangan pecahan. Hal ini menjadi suatu masalah yang perlu dianalisis. Analisis ini dilakukan untuk mengetahui kualitas soal dan kemampuan siswa dalam mengurutkan bilangan pecahan. Suatu tes bisa menginformasikan kualitas soal dan juga prestasi siswa. Tes dilaksanakan dengan mendistribusikan sebanyak 20 butir soal pilihan ganda tentang mengurutkan bilangan pecahan  kepada 56 siswa pada salah satu Sekolah Dasar di Kota Tasikmalaya. Hasil tes dianalisis dengan menggunakan Pemodelan RASCH dengan bantuan aplikasi perangkat lunak Winstep versi 3.75. Hasil penelitian menunjukkan bahwa analisis menggunakan Pemodelan RASCH menjelaskan kualitas butir soal pilihan ganda dan kemampuan siswa dalam mengurutkan bilangan pecahan. Kualitas butir soal pilihan ganda tentang mengurutkan bilangan pecahan berdasarkan tingkat kesulitannya diklasifikasikan menjadi empat yaitu soal sangat sulit, soal sulit, soal mudah dan soal sangat mudah. Dari 20 soal pilihan ganda terdapat enam soal sangat sulit, tiga butir soal sulit, empat butir soal mudah, dan tujuh soal sangat mudah. Sedangkan kemampuan siswa dikategorikan menjadi tiga yaitu kategori abilitas tinggi, abilitas sedang dan abilitas rendah. Dari 56 siswa Sekolah Dasar  kategori abilitas tinggi diperoleh sebanyak 10 orang, kategori abilitas sedang sebanyak 15 orang, dan kategori abilitas rendah sebanyak 31 orang.
Nilai-Nilai Karakter yang Terdapat dalam Film Animasi Upin dan Ipin Episode “Jembatan Ilmu”
Authors: Pasrah Romi , Ganda Nana , Mulyadiprana Ahmad
Published: February 2023

Film tidak hanya digunakan untuk media hiburan, melainkan menjadi media untuk menanamkan nilai-nilai karakter. Penelitian ini bertujuan untuk mengetahui nilai-nilai karakter yang terdapat dalam film animasi Upin dan Ipin episode "Jembatan Ilmu”. Penelitian ini menggunakan pendekatan kualitatif deskriptif dengan metode studi pustaka. Hasil penelitian menunjukan bahwa nilai-nilai karakter yang terdapat dalam film tersebut adalah menghargai prestasi, tanggung jawab, toleransi, peduli sosial, jujur, cinta tanah air. Oleh karena itu, film animasi ini cocok digunakan sebagai media untuk menyampaikan edukasi dan pesan moral serta nilai-nilai karakter kepada anak usia sekolah dasar.
Pengembangan Media Papan Putar Nusantara pada Materi Keragaman Pakaian Adat di Indonesia untuk Kelas IV SD
Authors: Oktaviani Devia Luthfi , Sumardi Sumardi , Nugraha Akmad
Published: February 2023

Penelitian ini bertujuan untuk mengembangkan produk media Papan Putar Nusantara layak digunakan pada pembelajaran IPS kelas IV SD. Pembelajaran IPS masih kurang dalam penyediaan media pembelajaran di sekolah dasar, IPS merupakan salah satu mata pelajaran yang bertujuan untuk bermasyarakat yang terjadi dalam kehidupan sehari-hari. Kebutuhan dalam pemahaman pada pembelajaran IPS memerlukan sumber untuk memudahkan menerima materi, manarik perhatian serta dapat memotivasi peserta didik dalam menerima materi. Sehingga peserta didik memerlukan media sebagai sumber belajar. Penelitian ini merupakan jenis penelitian pengembangan menggunakan metode penelitian Design Based Research. Pengembangan ini sudah dikatakan layak dibuktikan dari hasil yang divalidasi leh ahli Materi dan media, serta Pedagogik dengan menunjukkan materi yang digunakan sesuai dengan Kompetensi Dasar, sesuai dengan media yang dikembangkan pada materi Keragaman Pakaian Adat di Indonesia dikembangkan sesuai dengan perkembangan peserta didik, dengan kompetensi Dasar, sederhana, aman untuk digunakan, menarik perhatian peserta didik, warna menarik dan jelas. Pengumpulan data dilakukan dengan Uji coba awal dilakukan dengan studi pendahuluan melalui kegiatan observasi dan wawancara kepada guru kelas IV, serta validator ahli materi dan validator media. Uji coba lapangan awal, revisi produk, uji coba lapangan, hasil uji coba pelaksanaan, dan penyempurnaan produk menunjukkan bahwa pengembangan media Papan Putar Nusantara menarik perhatian, petunjuk penggunaan jelas, mudah untuk digunakan, bahan yang dibuat aman, dan tepat untuk digunakan pada meteri Keragaman Pakaian Adat di Indonesia.
Meningkatkan Hasil Belajar Konsep Perpindahan dan Perubahan Energi Listrik Siswa Kelas VI SDN 2 Pasirlawang melalui Metode Demonstrasi
Authors: Ngaenah Ngaenah
Published: February 2023

Penelitian ini dilatarbelakangi oleh rendahnya hasil belajar IPA tentang materi perubahan dan perpindahan energi listrik siswa kelas 6 SD Negeri 2 Pasirlawang . Guru cenderung memilih hanya metode dasar yang terdiri dari ceramah, tanya jawab dan tugas dalam  menyampaikan materi pembelajaran, sehingga siswa kelas 6 SD Negeri 2 Pasirlawang   kurang memahami perubahan dan perpindahan energi listrik. Hal tersebut ditindaklanjuti dengan melakukan perbaikan pembelajaran dalam bentuk Penelitian Tindakan Kelas dengan menggunakan Metode Demonstrasi. Adapun tujuannya adalah sebagai upaya meningkatkan hasil belajar perubahan dan perpindahan energi listrik siswa kelas 6 SDN 2 Pasirlawang  Melalui Metode Demonstrasi. Dalam penelitian ini dideskripsikan hal-hal yang berkaitan dengan penggunaan penggunaan metode Demonstrasi untuk meningkatkan hasil belajar perubahan dan perpindahan energi listrik siswa kelas 6  SD Negeri 2 Pasirlawang . Setelah dilaksanakan perbaikan ternyata penggunaan metode Demonstrasi mampu meningkatkan hasil belajar siswa baik secara individu maupun kelompok. Data penelitian, menunjukkan bahwa hasil belajar siswa mengenai perubahan dan perpindahan energi listrik berhasil ditingkatkan dengan prosentase ketuntasan belajar yang semula sebelum perbaikan  14 %, pada siklus I meningkat menjadi 67 % atau 14 orang dari jumlah siswa 21  orang dan 33 % atau 7 orang dari jumlah siswa 21 orang dinyatakan masih mengalami kesulitan belajar. Ketika perbaikan dilanjutkan ke siklus II, hasilnya lebih meningkat dari sebelumnya. Jumlah siswa yang mencapai KKM 75 ada 19 orang atau 90 %. Prosentase pencapaian KKM pada siklus I, 67%, meningkat pada siklus II menjadi 90 %.  Sedangkan rata-rata nilai hasil belajar pada siklus I adalah 70,95, pada siklus II meningkat menjadi rata-rata 80,48. Dari data hasil penelitian dapat disimpulkan bahwa dengan menggunkan metode demonstrasi ternyata dapat meningkatkan hasil belajar siswa tentang perubahan dan perpindahan energi listrik dalam pembelajaran IPA di SD Negeri 2 Pasirlawang   Kecamatan Purwadadi.
Pengaruh Interactive Learning terhadap Minat Belajar Siswa pada Penjumlahan Operasi Hitung Bilangan Bulat
Authors: Dahlia Annisa , Pranata Oyon Haki , Suryana Yusuf
Published: February 2023

Penelitian ini berjudul “Pengaruh Interactive Learning Terhadap Minat Belajar Siswa Pada Penjumlahan Operasi Hitung Bilangan Bulat”. Penelitian ini dilatar belakangi oleh hasil studi pendahuluan peneliti yang dilakukan di Sekolah Dasar. Adapun permasalahan dalam penelitian ini adalah kesulitan belajar dalam matematika khususnya mengenai penjumlahan bilangan bulat masih kurang dipahami oleh siswa karena kurang maksimalnya penggunaan media tentang pengurangan bilangan bulat, sehingga tidak adanya minat siswa untuk belajar matematika. Adapun tujuan yang hendak dicapai adalah pengaruh minat belajar siswa dalam penjumlahan operasi hitung bilangan bulat melalui interactive learning. Metode yang digunakan dalam penelitian ini yaitu metode pre-eksperimen dengan teknik pengumpulan data menggunakan angket dan observasi. Sampel penelitian adalah 31 siswa kelas IV SDN Kamulyan Manonjaya, Tasikmalaya. Berdasarkan analisis, hasil penelitian menunjukkan bahwa rata-rata pra perlakuan  = 7,8065  dan rata-rata pasca perlakuan  = 8,0968 dengan n1 = 31 dan n2 = 31 diperoleh thitung = 1,966. Dengan α = 5% diperoleh ttabel = 1,695. Berdasarkan tabel diperoleh 0,047   0,05, melalui perhitungan dengan menggunakan SPSS diperoleh data thitung ttabel dan p-value   α , maka dapat disimpulkan penolakan terhadap H0. Hal ini menunjukkan bahwa rata-rata hasil angket paska perlakuan lebih tinggi di bandingkan dengan rata-rata hasil angket pra perlakuan, maka dapat dikatakan bahwa interactive learning efektif untuk meningkatkan minat belajar siswa pada penjumlahan operasi hitung bilangan bulat. Hal ini menunjukan bahwa minat belajar siswa dapat ditingkatkan melalui pembelajaran berbasis interactive learning.
Penggunaan Media Ular Tangga untuk Meningkatkan Hasil Belajar Siswa pada Materi Sifat-Sifat Persegi di Kelas 2 SD
Authors: Zuita Nina , Nur’aeni L Epon , Nurgraha Akhmad
Published: February 2023

Penelitian ini di latar belakangi oleh hasil belajar matematika siswa yang masih di bawah kriteria ketuntasan minimal (KKM). Penyebab rendahnya hasil belajar siswa adalah kurang optimalnya rencana pelaksananaan pembelajaran yang dirancang oleh guru, dan penggunaan media pembelajaran yang kurang menarik dan bervariatf sehingga siswa kesulitan dalam memahami materi pelajaran. Berdasarkan permasalahan tersebut, peneliti memilih media ular tangga sebagai upaya untuk meningkatkan hasil belajar siswa pada materi bangun datar. Tujuan penelitian ini adalah untuk meningkatkan kemampuan guru dalam merumuskan perencanaan pembelajaran, meningkatkan kemampuan guru dalam melaksanakan pembelajaran dan meningkatkan hasil belajar siswa pada materi bangun datar dengan menggunakan media ular tangga. Metode penelitian yang digunakan adalah penelitian tindakan kelas (PTK) dengan mengadaptasi model Kemmis Taggart yang terdiri dari perencanaan, pelaksanaan, pengamatan dan refleksi. Penelitian dilakukan sebanyak 2 siklus di kelas II SDN Wangun.sedangkan instrument yang digunakan dalam penelitian adalah rencana pelaksanaan pembelajaran (RPP), lembar kerja siswa(LKS), kembar observasi RPP(APKG 1), Llembar observasi guru dalam melakukan pembelajaran (APKG 2), lembar aktivitas siswa dalam pembelajaran, dan lembar soal. Data yang diperoleh setiap tahapan penelitian dianalisis secara kuantitatif dan kualitatif. Adapun hasil pelaksanaan penelitian ini adalah terdapat peningkatan hasil belajar siswa dari siklus I sampai siklus II, rata-rata hasil belajar siswa pada siklus I sebebsar 18,6 siklus II sebesar 20,3.berdasarkan hasil pelaksanaan penelitia, diperoleh bahwa penggunaan media ular tangga dapat meningkatkan hasil belajar siswa pada materi bangun datar kelas II SDN Wangun Kecamatan Karangnunggal Kabupaten Tasikmalaya.
Pengembangan Perencanaan Pembelajaran Matematika Berbasis Higher Order Thinking Skill di Sekolah Dasar
Authors: Selvyanti Prima Silmi , Suryana Yusuf , Pranata Oyon Haki
Published: February 2023

Perencanaan pembelajaran adalah salah satu tujuan untuk mencapai pembelajaran yang efektif dan efisien, oleh karena itu setiap satuan pendidikan harus menyusun perencanaan pembelajaran untuk mencapai tujuan pembelajaran secara optimal. Perencanaan pembelajaran dalam bidang studi matematika di beberapa daerah Kabupaten Tasikmalaya sudah mengembangkan keterampilan berpikir tingkat tinggi namun belum maksimal. Hal tersebut menyebabkan pembelajaran matematika hanya dapat mengembangkan keterampilan berpikir rendah. Tujuan dari penelitian ini adalah mendeskripsikan perencanaan pembelajaran matematika yang dibuat oleh guru dan menghasilkan produk perencanaan pembelajaran matematika berupa Rencana Pelaksanaan Pembelajaran (RPP) berbasis Higher Order Thinking Skill (HOTS) di sekolah dasar, agar pembelajaran matematika menekankan keterampilan berpikir tingkat tinggi sesuai dengan ketentuan Kurikulum 2013. Penelitian ini menggunakan metode penelitian pengembangan Design Based Research (DBR) dengan menggunakan tahapan penelitian menurut Reeves, yaitu : 1)identifikasi dan analisis masalah oleh peneliti dan praktisi secara kolaboratif; 2)mengembangkan solusi yang didasarkan pada patokan teori, design principle yang ada dan inovasi teknologi; 3)melakukan proses berulang untuk menguji dan memperbaiki solusi secara praktis; 4)refleksi untuk menghasilkan design principle serta meningkatkan implementasi dan solusi secara praktisi. Teknik pengumpulan data dalam penelitian ini dengan observasi, wawancara, studi dokumentasi dan kuesioner. Lokasi penelitian di dua sekolah dasar di Kabupaten Tasikmalaya
Pemanfaatan Buku Cerita Anak sebagai Sumber Bacaan untuk Mengenalkan Sejarah Pesantren Cipasung pada Siswa SD
Authors: Elsiana R Elsa , Apriliya Seni , Giyartini Rosarina
Published: February 2023

Tulisan ini dilatarbelakangi karena belum ditemukannya ketersediaan buku cerita anak tentang sejarah pesantren Cipasung. Tulisan ini bertujuan untuk mendapatkan informasi mengenai ketersediaan buku cerita anak tentang sejarah pesantren Cipasung serta untuk mendeskripsikan bagaimana rancangan dari pengembangan buku cerita anak tentang sejarah pesantren Cipasung. Berdasarkan survey kepada siswa dan mahasiswa, hasilnya siswa tidak memiliki pengetahuan tentang Pesantren Cipasung yang menjadi ciri khas dari daerah tempat tinggal siswa. Sedangkan dari mahasiswa rata-rata mengetahui keberadaan pesantren Cipasung tetapi tidak mengetahui sejarah pesantren Cipasung yang merupakan salah satu pesantren terbesar di Tasikmalaya. Metode penelitian yang digunakan adalah metode Educational Design Research (EDR) model Revees. Teknik pengumpulan data dilakukan dengan cara wawancara dan kuesioner. Penelitian ini menghasilkan produk berupa buku cerita tentang sejarah pesantren Cipasung. Hasil dari penelitian ini yaitu berupa buku cerita anak yang memuat sejarah khususnya sejarah pesantren yang ada di daerah tempat tinggalnya dapat dijadikan sebagai alternatif sumber bacaan bagi siswa guna menambah wawasan mengenai sejarah pesantren Cipasung yang dikenal sebagai salah satu pesantren terbesar di Tasikmalaya, selain itu dapat digunakan sebagai media untuk mengenalkan sejarah pada siwa sd.
Desain Didaktis Keliling Belah Ketupat melalui Model Pembelajaran SPADE
Authors: Nurilfatihah Shelvia , Nur’aeni L Epon , Nur Lutfi
Published: February 2023

Penelitian ini dilatar belakangi oleh hasil studi pendahuluan yang mengindikasikan adanya hambatan belajar yang dialami siswa terkait keliling belah ketupat. Adanya hambatan belajar tersebut berakibat pada kurangnya pemahaman siswa terhadap materi keiling belah ketupat. oleh karena itu guru harus mampu merancang suatu pembelajaran yang dapat meminimalisir ataupun mengatasi hambatan belajar yang dialami oleh siswa dengan mempertimbangkan karakteristik, kebutuhan dan perkembangan kognitif siswa sekolah dasar. berdasarkan hal tersebut, desain didaktis keliling belah ketupat melalui model pembelajaran SPADE dapat digunakan untuk mempermudah siswa dalam memahami materi keliling belah ketupat. tujuan dari penelitian ini adalah untuk mendeskripsikan: learning obstacle siswa dalam memahami matei keliling belah ketupat, desain pembelajaran keliling belah ketupat menggunakan model pembelajaran SPADE, implementasi pembelajaran keliling belah ketupat dengan menggunakan model pembelajaran SPADE, respon siswa terhadap pembelajaran keliling belah ketupat menggunakan model pembelajaran SPADE. Metode penelitian yang digunakan berupa penelitian desain didaktis (Didactical Design Research) yang terdiri dari tiga tahapan, yakni prospective analysis, analisis metapedadidaktik dan retrospective analysis. penelitian ini dilakukan Bangunharja Kecamatan Cisaga Kabupaten Ciamis. Hasil akhir dari penelitian ini berupa desain didaktis alternative yang dapat digunakan untuk meminimalisir hambatan belajar pada materi keliling belah ketupat di kelas IV Sekolah Dasar