bluuebunny/crossref_metadata_2025_split huggingface dataset:
VALIDITAS LKS MATEMATIKA DENGAN PENDEKATAN SAINTIFIK BERBASIS OUTDOOR PADA MATERI BANGUN DATAR
Authors: Febriandi Riduan Febriandi , Susanta Agus Susanta , Wasidi Wasidi Wasidi 
Published: June 2021

Penelitian ini bertujuan untuk membuat sebuah produk berupa LKS matematika dengan pendekatan saintifik berbasis outdoor, serta untuk menghasilkan LKS yang valid sehingga dapat digunakan oleh peserta didik. Penelitian ini merupakan penelitian pengembangan, dimana model pengembangan diadaptasi dari model Borg dan Gall yang menuliskan 10 langkah Research and Development. Namun pada penelitian ini diadaptasi 6 langkah pengembangan mengingat keterbatasan waktu, biaya dan tenaga,yangterdiri dari: (1) penelitian dan pengumpulan informasi, (2) perencanaan, (3) pengembangan produk awal, (4) uji coba terbatas, (5) revisi produk awal, dan (6) uji coba lapangan. Hasil penelitian menunjukkan bahwa LKS matematika yang dikembangkan dan telah divalidasi oleh para ahli dengan kriteria valid dan reliabel, dimana kriteria validitas adalah tinggi yaitu, 0,913 dengan konsistensi ahli sedang 0,77, Rata-rata nilai peserta didik yang diperoleh setelah belajar menggunakan LKS lebih besar yaitu 80,35, sedangkan rata-rata nilai peserta didik dari guru tanpa menggunakan LKS sebesar 64,79. Secara umum LKS matematika dengan pendekatan saintifik berbasis outdoor untuk siswa kelas IV SD pada materi bangun datar yang dikembangkan valid digunakan dalam pembelajaran
Peningkatan Kemampuan Pemecahan Masalah dan Motivasi Belajar dalam Pembelajaran Tematik dengan Model Arias Pada Siswa Kelas IV SD Negeri 27 Bengkulu Tengah
Authors: Nurralita Indah Nurralita , Winarni Endang Widi , Koto Irwan Koto 
Published: June 2021

Penelitian ini bertujuan untukmendeskripsikan penerapan model ARIAS, peningkatan kemampuan pemecahan masalah, peningkatan motivasi belajarpada pembelajaran tematik siswa.Metode penelitian yang digunakan yaitu penelitian tindakan kelas (PTK). Subjek penelitian adalah Kelas IV SD Negeri 27 Bengkulu Tengah. Prosedur penelitian dengan metode siklus yakni siklus I sampai siklus III.Teknik pengumpulan data observasi, angket dan dokumentasi. Berdasarkan hasil penelitian dan pembahasannya,disimpulkan bahwa pembelajaran tematik dengan model ARIAS: (1) Dapat meningkatkan aktivitas pembelajaran siswa, (2) Meningkatkan motivasi belajar, dan (3) Meningkatkan kemampuan pemecahan masalah.
Aspirin Use and Common Cancer Risk: A Meta-Analysis of Cohort Studies and Randomized Controlled Trials
Authors: Wang Lijuan , Zhang Rongqi , Yu Lili , Xiao Jiarui , Zhou Xuan , Li Xinxuan , Song Peige , Li Xue 
Published: June 2021

BackgroundWhether aspirin use can decrease or increase cancer risk remains controversial. In this study, a meta-analysis of cohort studies and randomized controlled trials (RCTs) were conducted to evaluate the effect of aspirin use on common cancer risk.MethodMedline and Embase databases were searched to identify relevant studies. Meta-analyses of cohort studies and RCTs were performed to assess the effect of aspirin use on the risk of colorectal, gastric, breast, prostate and lung cancer. Cochran Q test and the I square metric were calculated to detect potential heterogeneity among studies. Subgroup meta-analyses according to exposure categories (frequency and duration) and timing of aspirin use (whether aspirin was used before and after cancer diagnosis) were also performed. A dose-response analysis was carried out to evaluate and quantify the association between aspirin dose and cancer risk.ResultsA total of 88 cohort studies and seven RCTs were included in the final analysis. Meta-analyses of cohort studies revealed that regular aspirin use reduced the risk of colorectal cancer (CRC) (RR=0.85, 95%CI: 0.78-0.92), gastric cancer (RR=0.67, 95%CI: 0.52-0.87), breast cancer (RR=0.93, 95%CI: 0.87-0.99) and prostate cancer (RR=0.92, 95%CI: 0.86-0.98), but showed no association with lung cancer risk. Additionally, meta-analyses of RCTs showed that aspirin use had a protective effect on CRC risk (OR=0.74, 95%CI: 0.56-0.97). When combining evidence from meta-analyses of cohorts and RCTs, consistent evidence was found for the protective effect of aspirin use on CRC risk. Subgroup analysis showed that high frequency aspirin use was associated with increased lung cancer risk (RR=1.05, 95%CI: 1.01-1.09). Dose-response analysis revealed that high-dose aspirin use may increase prostate cancer risk.ConclusionsThis study provides evidence for low-dose aspirin use for the prevention of CRC, but not other common cancers. High frequency or high dose use of aspirin should be prescribed with caution because of their associations with increased lung and prostate cancer risk, respectively. Further studies are warranted to validate these findings and to find the minimum effective dose required for cancer prevention.
Collapse Analysis of a Transmission Tower-Line System Induced by Ice Shedding
Authors: Li Jiaxiang , Wang Biao , Sun Jian , Wang Shuhong , Zhang Xiaohong , Fu Xing 
Published: June 2021

Ice shedding causes transmission lines to vibrate violently, which induces a sharp increase in the longitudinal unbalanced tension of the lines, even resulting in the progressive collapse of transmission towers in serious cases, which is a common ice-based disaster for transmission tower-line systems. Based on the actual engineering characteristics of a 500 kV transmission line taken as the research object, a finite element model of a two-tower, three-line system is established by commercial ANSYS finite element software. In the modeling process, the uniform mode method is used to introduce the initial defects, and the collapse caused by ice shedding and its influencing parameters are systematically studied. The results show that the higher the ice-shedding height is, the greater the threat of ice shedding to the system; furthermore, the greater the span is, the shorter the insulator length and the greater the dynamic response of the line; the impact of ice shedding should be considered in the design of transmission towers.
Political Narratives and the US Partisan Gender Gap
Authors: Antinyan Armenak , Bassetti Thomas , Corazzini Luca , Pavesi Filippo 
Published: June 2021

Social scientists have devoted considerable research effort to investigate the determinants of the Partisan Gender Gap (PGG), whereby US women (men) tend to exhibit more liberal (conservative) political preferences over time. Results of a survey experiment run during the COVID-19 emergency and involving 3,086 US residents show that exposing subjects to alternative narratives on the causes of the pandemic increases the PGG: relative to a baseline treatment in which no narrative manipulation is implemented, exposing subjects to either the Lab narrative (claiming that COVID-19 was caused by a lab accident in Wuhan) or the Nature narrative (according to which COVID-19 originated in the wildlife) makes women more liberal. The polarization effect documented in our experiment is magnified by the political orientation of participants' state of residence: the largest PGG effect is between men residing in Republican-leaning states and women living in Democratic-leaning states.JEL Classification: J16, D83, C83, C99, P16, D72.
From Enchantment to Disillusion: A Narrative Exploration of Cannabis Use Disorder Among Young Israeli Combat Veterans
Authors: Serebro Miri , Sobol-Goldberg Shira , Feingold Daniel 
Published: June 2021

Introduction: Substance use is common among military personnel and war veterans, especially combat veterans. Despite substantially high prevalence of cannabis use and Cannabis Use Disorder (CUD) consistently reported among veterans, little is known about psychological factors which may underlie CUD among this population.Methods: In this study, we used narrative analysis in order to interpret retrospective in-depth interviews of combat veterans (N = 12) who were released from mandatory military duty during the past 5 years and currently qualified for a diagnosis of CUD. Participants were recruited from a larger quantitative study were eligible for participation if they screened positive for a diagnosis of CUD according to the Cannabis Use Disorder Identification Test- Revised (CUDIT-R) questionnaire. CUD diagnosis was validated in-person using the cannabis section of the Alcohol Use Disorder and Associated Disabilities Interview Schedule-5 (AUDADIS-5) interview protocol. All interviews were transcribed and coded using the content analysis procedure.Findings: Five main themes were extracted: (a) Traumatic events (b) Attitudes toward cannabis use (c) Combatant identity (d) The role of authority/father figures, and (e) Moral crisis. A meta-theme has been identified, “from enchantment to disillusion,” representing a gradual psychological shift from a hopeful, highly motivated stance into the current state of mental rupture and moral injury, which are unsuccessfully compensated by excessive use of cannabis.Conclusions: This study shed light on the etiology of CUD among young combat veterans, highlighting the role of supposed self-medication for trauma and sense of betrayal.
Pharmacological Activating Transcription Factor 6 Activation Is Beneficial for Liver Retrieval With ex vivo Normothermic Mechanical Perfusion From Cardiac Dead Donor Rats
Authors: Cheng Nuo , Shi Ji-Hua , Jin Yang , Shi Yuan-Bin , Liu Xu-Dong , Zhang Hua-Peng , Cao Sheng-Li , Yang Han , Guo Wen-Zhi , Zhang Shui-Jun 
Published: June 2021

Background: Normothermic machine perfusion (NMP) could be beneficial for organ retrieval from donors after cardiac death (DCD). Activating transcription factor 6 (ATF6) was recently shown to mitigate liver ischemia/reperfusion injury and confer protection. The aims of this study were to assess the implication of ATF6 in liver retrieval from DCD rat livers with NMP and explore the effect of pharmacologic ATF-6 activation on liver retrieval.Methods: The livers from DCD rats were exposed to 30 min of warm ischemia and 8 h cold preservation followed by 2 h NMP with or without an ATF6 activator in the perfusate. Perfusates and livers were harvested to detect ATF6 expression, liver function, and inflammation.Results: DCD livers with NMP were associated with ATF6 overexpression and activation based on IHC and WB (P &lt; 0.05). The ATF6 activator downregulated perfusate aminotransferases, decreased the Suzuki score, downregulated CD68 and MPO based on IHC, induced the expression of cytochrome c in mitochondria and inhibited the expression of cytochrome c in cytoplasm based on WB, reduced TNFα and IL-6 levels based on ELISA, decreased levels of MDA, GSSG and ATP, and increased SOD activity and GSH levels in the perfused livers (P &lt; 0.05).Conclusion: ATF6 is important for liver retrieval, and an exogenous ATF6 activator accelerates liver retrieval from DCD rats in an ex vivo NMP model.
Efektivitas Daun Kelor Terhadap Produksi Asi Pada Ibu Menyusui di Puskesmas Simpang Mamplam Bireuen
Authors: Dahliana Dahliana , Maisura Maisura 
Published: June 2021

ASI dapat diberikan sampai bayi berusia 2 tahun. Berdasarkan bukti ilmiah tentang manfaat ASI bagi bayi, ibu, keluarga dan negara, pedoman internasional merekomendasikan pemberian ASI eksklusif selama 6 bulan. MWN Tujuan Penelitian Untuk mengetahui pengaruh pemberian daun kelor (Moringa oleifera) terhadap produksi ASI pada Ibu Menyusui 1-6 bulan di wilayah kerja Puskesmas Simpang Mamplam. Daun kelor memiliki fungsi untuk merangsang produksi ASI pada ibu menyusui karna mengandung senyawa fitosterol yang berfungsi untuk meningkatkan dan melancarkan produksi ASI. Banyak alternatif untuk meningkatkan produksi air susu ibu salah satunya dengan mengkonsumsi daun kelor. Penelitian dilakukan sejak tanggal 02 Mei - 24 September 2019. Jenis penelitian ini adalah quasy eksperimen, dengan rancangan penelitian pre and posttest control group design. Adapun sampel dalam penelitian ini adalah ibu menyusui yang berada di wilayah kerja Puskesmas Simpang Mamplam yang berjumlah 30 orang. Analisa data menggunakan uji Mann Witney. Hasil uji statistik menunjukkan bahwa ada perbedaan bermakna perubahan produksi ASI dilihat dengan peningkatan berat badan bayi antara kelompok diberikan daun kelor dengan tidak diberikan daun kelor dengan nilai P= 0.000 (p>0,05), diharapkan kepada ibu menyusui agar mengkonsumsi daun kelor karena sangat bermanfaat untuk peningkatan produksi ASI dan juga meningkatnya kesehatan ibu akan mempengaruhi produksi ASI, keberhasilan ASI eksklusif didukung oleh banyak faktor salah satunya adalah vitalitas ibu dan produksi ASI
PENGOLAHAN SAMPAH ORGANIK PASAR DENGAN MENGGUNAKAN MEDIA LARVA BLACK SOLDIER FLIES (BSF)
Authors: Widyastuti Sri , Sardin Sardin 
Published: June 2021

Sampah organik pasar belum bisa langsung diolah menjadi kompos dengan menggunakan media yang berisi larva black soldier fly (maggot) , hal ini disebabkan karena kadar air terlalu tinggi. Tujuan penelitian ini adalah untuk mengolah sampah organik pasar menjadi kasgot (kompos bekas maggot). Treatment dalam penelitian ini adalah penjemuran, penambahan telur black soldier fly dan penambahan kompos stater pada media pengkomposan untuk treatment 1 dan 3. Parameter yang diujikan adalah C/N rasio; kondisi fisik,mikroba dan kecepatan proses pengomposan. Hasil penelitian berdasarkan SNI Kompos 19-7030-2004 tentang Spesifikasi Kompos dari Sampah Organik Domestik. menunjukkan karakteristik kompos pada penjemuran selama 2 hari lebih baik daripada penjemuran selama 3 hari. Jenis mikroba yang paling dominan ditemukan pada pengolahan sampah organik pasar dengan menggunakan media BSF yaitu jenis mikroba Bacillus sp.
MODEL PENERIMAAN TEKNOLOGI APLIKASI PEMASARAN PADA KOPERASI USAHA WANITA DUKUH MENANGGAL SURABAYA
Authors: Utomo Yitno , Abdul Jumali Muhamad 
Published: June 2021

Koperasi Usaha Wanita (KOPWAN) memang menjadi idola perekonomian di Kota Surabaya, melalui konsep yang dibuat Walikota Surabaya menjadikan koperasi ini berkembang lebih cepat, kendala utama koperasi dalam persaingan usaha adalah penerapan teknologi, dimana kopearsi dituntut untuk mampu melayani proses penjualan dan pemasaran dalam suatu sistem aplikasi. Tujuan penelitian ini adalah untuk mengetahui model penerimaan teknologi yang terdiri dari persepsi kegunaan, persepsi kemudahan dan data produk terhadap penggunaan sesungguhnya serta terhadap transaksi pembelian pada Koperasi Usaha Wanita Dukuh Menanggal. Sampel dalam penelitian ini terdiri atas 173 orang dan analisa data dalam penelitian ini menggunakan metode SEM (Structural Equation Modeling). Hasil Analisa data bahwa terdapat tiga variabel yang memiliki pengaruh secara signifikan yaitu persepsi kegunaan terhadap transaksi pembelian, perilaku konsumen terhadap transaksi pembelian dan persepsi kegunaan terhadap transaksi pembelian pada aplikasi pemasaran Koperasi Usaha Wanita Dukuh Menanggal, hal ini dibuktikan dengan nilai Critical Ratio (CR) di atas 1,96 dan probabilitas < 0,05.
The anticancer activity of ethanol extract of Chromolaena odorata leaves in 7,12-Dimethylbenz[a]anthracene in (DMBA) induced breast cancer Wistar rats (Rattus novergicus)
Authors: Yusuf Hanifah , Kamarlis Reno Keumalazia , Yusni Yusni , Fahriani Marhami 
Published: June 2021

Background: Breast cancer chemotherapy with standard drugs such as doxorubicin will induce cardiotoxicity. Therefore, this study aims to evaluate the anticancer activity ofC. odorataleaves extract in DMBA induced breast cancer on rats.Methods: Seven groups ofRattus novergicuswere used: Four treatment groups ofC. odorataextract (500, 1000, 2000, and 4000 mg/kg BW), normal control, breast cancer control, and doxorubicin treatment group. The number, volume, and weight of the nodule and the rats’ body weight were compared among groups. Data was analyzed using paired t-test or one-way ANOVA with post hoc analysis as appropriate.Results: Significant decline of the number, volume, and weight of cancer nodules was observed in the treatment group (p&lt; 0.001). The weight of the cancer nodule at week 16thwas also significantly reduced in GCo2000compared to Gdoxo(p&lt; 0.0001). A significant increase in body weight was also dose-dependent, especially at week 11th(p&lt; 0.05 in all comparisons) and week 16th(p&lt; 0.001 in all comparisons).Conclusion: This study suggested that the ethanol extract ofC. odorataleaves has anticancer and antiproliferative activity.
Réseaux sociaux et régulation des émotions : le cas de LiveMentor
Authors: Bornard Fabienne , Verzat Caroline , Monties Vanessa 
Published: June 2021

Lors du premier confinement en 2020, LiveMentor, jeune entreprise de formation et d’accompagnement d’entrepreneurs en ligne a lancé une émission quotidienne sur Facebook, puis organisé une enquête pour connaître le ressenti et les modalités de soutien recherchées par ses membres. Ayant eu accès aux 131 réponses récoltées, nous avons mené une analyse interprétative pour comprendre comment les entrepreneurs ont utilisé ce réseau social pour réguler leurs émotions face au choc de la crise de la Covid. Cette étude propose quelques enseignements concernant le profil de ces entrepreneurs et la nature des ressources qui ont pu les aider. Elle démontre l’intérêt de poursuivre des recherches sur le sujet, pour l’instant inexploré.
Première étude pilote en médecine photonique : évaluation chez 12 patients lombalgiques chroniques
Authors: Vidal Pascal , Curtit-Planchat Catherine , Delcourt Anne , Bulle Catherine , Canu Bénédicte 
Published: June 2021

Cette étude pilote, de terrain, multicentrique non randomisée et sans groupe témoin, est la première étude concernant la médecine photonique chez des patients lombalgiques chroniques. Son objectif principal était d’évaluer l’effet sur la douleur, de chaque séance et de l’ensemble de 5 séances de soin. Ses objectifs secondaires, d’évaluer les effets des soins reçus sur l’incapacité fonctionnelle et sur les répercussions sur la qualité de vie. Des questionnaires validés ont été auto-administrés au cours des 5 séances : échelle visuelle analogique EVA pour la douleur, échelle EIFEL pour l’incapacité fonctionnelle et questionnaire Dallas pour évaluer l’impact sur la qualité de vie. L’échelle EIFEL et le questionnaire Dallas ont été auto-administrés 3 semaines après la fin des soins, pour évaluer la stabilité des résultats obtenus. L’échantillon comporte 12 personnes. Les résultats suggèrent une diminution de l’intensité des douleurs au cours de chaque séance, ainsi qu’entre le début et la fin de la cure. Il en est de même pour la régression de l’incapacité fonctionnelle et la diminution de l’impact sur la qualité de vie entre le début et la fin de la cure, qui perdurent 3 semaines après la fin de la cure. Une discussion des résultats et de la méthodologie de cette étude est ensuite menée, afin d’apporter une contribution aux études à venir.
Introduction au thème. Afrique et engagement scientifique : sur le mouvement des lignes
Authors: Bonnecase Vincent , Brachet Julien 
Published: June 2021

Les lignes de la production de connaissances en et sur l’Afrique et les diasporas africaines ne cessent de bouger, au gré des transformations des contextes politiques, institutionnels, idéologiques et épistémologiques au sein desquels elle se réalise. En prenant l’engagement scientifique comme fil conducteur, cet article introductif pose quatre grandes questions relatives au passé, au présent et aux futurs possibles des études africaines. « L’Afrique » constitue-t-elle aujourd’hui un périmètre scientifique légitime ? Comment à la fois considérer des dynamiques autonomes par le bas et des rapports de domination ? En quoi l’évolution contemporaine des sociétés africaines aide-t-elle à penser celles d’autres sociétés à travers le monde ? Comment articuler les arènes de production des savoirs sur l’Afrique sans anéantir leur pluralité ?
L’Afrique militarisée : perspectives historiques
Authors: Scheele Judith 
Published: June 2021

Au regard du poids accru du paradigme sécuritaire dans l’engagement international en l’Afrique, il semble envisageable de parler d’une « militarisation » du continent. Or cette militarisation n’est pas nouvelle, ni irréversible ou unidirectionnelle, ni le seul fait d’interventions externes. Cet article vise à passer en revue quelques moments forts de la militarisation de l’Afrique, en différents lieux et à différentes époques, afin d’en cerner les effets structurels et structurants, et de mieux en saisir les dynamiques actuelles.
Oralités paysannes. Autour de George Sand
Authors: Saminadayar-Perrin Corinne 
Published: June 2021

Alors qu’au début du xix e siècle, l’intérêt grandit pour les cultures des campagnes, la représentation écrite des parlers paysans se heurte encore à des codes littéraires qui tendent à la dévaloriser ou à l’idéaliser et empêchent de figurer de manière satisfaisante le monde rural. Cet article propose de se pencher sur les stratégies narratives développées par George Sand dans ses romans champêtres pour contrer ce double écueil, linguistique et anthropologique. Sand y cherche constamment à mettre en valeur la vocalité des parlers paysans et à souligner leur ancrage dans des cultures spécifiques dont la richesse excède de loin le traditionnel clivage entre oral et écrit. À terme, c’est à un projet politique de réconciliation démocratique auquel œuvrent les romans champêtres, en s’inscrivant dans une problématique mêlant ethnolinguistique et anthropologie pour mieux réviser les grands partages littéraires, culturels et symboliques.
“OPER.TEN” Transform Emergency Now! - facing Covid-19 with Open Innovation and Human Centered Design
Authors: Mincolelli Giuseppe , Cocchi Nicolò , Dosi Clio , Vignoli Matteo 
Published: June 2021

The paper presents “OPER.TEN”, a 10 days program that hybridized Human Centered Design (HCD) with Open innovation (OI), developed in response to the Covid-19 pandemic. The program adapted a HCD methodology so that the design teams could face the challenges of designing during a pandemic, such as relying on remote interactions only. Methodological challenges are presented as well as tools and methods developed to overcome those challenges. To ensure fast implementation of the results, the HCD methodology was hybridized with pillars of OI by involving stakeholders of the territory that could participate with implementation capacity. The final network involved Universities, Companies, Municipality, and Government. After the design phase, 3 of 4 solutions were successfully implemented in 40 days. Results report how to hybridize a HCD with OI to push rapid implementations.
The Prevalence of Hepatitis B and Human Immunodeficiency Virus Infection among Pregnant Women Attending Antenatal Clinics in Calabar, Nigeria
Authors: Ben Solomon Asuquo , Etefia Etefia U. , Ben Hannah S. 
Published: June 2021

Background:
Hepatitis B virus (HBV) and human immunodeficiency virus (HIV) are viral infections that are transmitted through transfusion of unscreened blood products, needlestick injuries, and unprotected sex. This was a study to determine the prevalence of Hepatitis B and HIV infection among pregnant women accessing antenatal care.

Materials and Methods:
Two ml of venous blood was also collected into ethylenediaminetetraacetic acid bottles for hepatitis B surface antigen (HBsAg) and HIV test using a rapid diagnostic test kit following the standard algorithm of performing diagnosis.

Results:
Of the 250 participants examined for the presence of HBV and HIV among pregnant women attending the antenatal clinic in Calabar, 14 (5.6%) and 3 (1.2%) were positive for HBsAg and HIV. Participants aged 26–30 years had the highest prevalence of HBsAg 8 (7.0%) and participants aged 31–35 had the highest prevalence of HIV 1 (3.2%). The seroprevalence of HBsAg and HIV infection among pregnant women attending antenatal clinics by occupation shows that students had the highest infection rate of 3 (9%) and 2 (6%) for HBsAg and HIV. Of the 250 participants enrolled, the level of HIV and HBV awareness was 178 (71.2%) and 242 (96.8%), respectively.

Conclusions:
The study has revealed that the prevalence of HBV and HIV is on the increase among pregnant women, with a prevalence of 5.6% and 1.2%, respectively. General precautions need to be strictly adhered to in the hospital and particularly in blood transfusion and handling of sharps objects.