bluuebunny/crossref_metadata_2025_split huggingface dataset:
Digitalisierungsstrategien in Privatarchiven: Herausforderungen und Chancen
Authors: Huwiler Elke 
Published: March 2021

Archivbestände digitalisiert im Netz zu finden wird aus Nutzersicht heutzutage immer selbstverständlicher. Doch nicht nur um diesen Nutzungsbedürfnissen zu entsprechen, sondern auch aus Gründen der Erhöhung der Sichtbarkeit als Archiv gegen aussen, aus konservatorischen Gründen sowie aus Gründen der Bereitstellung des digitalisierten Materials für Forschung oder zu musealen Zwecken digitalisieren immer mehr Archive ihre Bestände.Um solche Digitalisierungsprojekte durchführen zu können, formulieren Archive Digitalisierungsstrategien, die unter den Aspekten Ziele, Ressourcen, Juristische Grundlagen, Auswahlkriterien, Standards, Erschliessung, Bereitstellung und Langzeitarchivierung die Handhabung des Archivs im Digitalisierungsprozess regeln.Die Arbeit untersucht die Digitalisierungsstrategien der beiden Gedächtnisinstitutionen Deutsches Literaturarchiv (Marbach) und Schweizerisches Literaturarchiv (Bern), die unterschiedlich mit dem Bereich der Digitalisierung umgehen: Während das Deutsche Literaturarchiv bisher kaum sichtbar Material digitalisiert und bereitgestellt hat, nun aber zu diesem Zweck ein Digitalisierungszentrum errichtet hat und die Koordination der entsprechenden Projekte „top-down“ regeln will, hat das Schweizerische Literaturarchiv schon mehrere Digitalisierungsprojekte durchgeführt, allerdings ohne selber formulierte Digitalisierungsstrategie; es orientiert sich für die Rahmenbedingungen an der Digitalisierungsleitlinie der Schweizerischen Nationalbibliothek und führt eigene Projekte nach einer „bottom-up“-Handhabung mit variierenden Regelungen je nach Projekt durch.Der Vergleich der beiden Strategien zeigt unter anderem, dass sich die beiden Literaturarchive zwar in der digitalisierten Erschliessung und Bereitstellung von Metadaten sehr fortschrittlich positionieren, bei der eigentlichen Digitalisierung von Archivgut jedoch sehr zurückhaltend vorgehen. Die Gründe dafür werden in der Untersuchung analysiert, und es werden Optimierungsvorschläge formuliert. Ein deutliches Fazit der Arbeit ist, dass die Digitalisierung von Archivgut und die Bereitstellung der Digitalisate im Semantic Web enorme Chancen für die Literaturarchive bietet und dieser Prozess somit vorangetrieben und optimiert werden sollte.
Response of Blackgram (Phaseolus mungo L.) Varieties to Weed Competition and to Pre and Post Emergence Herbicide Application during Rabi
Authors: Rani B. Pramila , Srinivasulu K. , Venkateswarlu E. 
Published: March 2021

Background: Blackgram (Phaseolus mungo L.), a major pulse crop of Andhra Pradesh grown in an area of 3.52 lakh ha with a production of 2.93 lakh tons during rabi season (Anonymous, 2019). One of the major characteristics for selection of blackgram varieties for rabi season under conditions of receding soil moisture in black soils is their early vigour and good weed smothering capability. Early varieties due to their early growth habit can cover the land and thus can smother weeds better than late maturing varieties. Further some variations are observed to be more tolerant to post emergence herbicide application. Hence, there is need to evaluate the promising blackgram varieties for their weed competitiveness and tolerance to pre and post emergence herbicidal application. Methods: A field experiment was carried out at Regional Agricultural Research Station, Lam, Guntur, Andhra Pradesh, with an objective to find out the competitive ability of blackgram varieties to smother weeds during rabi season of 2015-16 and 2016-17 under upland conditions. The experiment was laid out in split plot design with three replications. The treatments consisted of five methods of weed control as main plots, viz., pendimethalin 1.0 kg ha-1 PE, imazethapyr 50 g ha-1 PoE, pendimethalin 1.0 kg ha-1 PE fb imazethapyr 50 g ha-1, PoE, manual weeding at 20 and 40 days after sowing (DAS) along with inter cultivation at 30 DAS and unweeded; four blackgram varieties, viz., GBG 1, PU 31, LBG 787, LBG 752, as sub treatments which were replicated thrice. Result: Weed dry matter recorded at 45 days was lower and weed control efficiency (WCE) was higher with pendimethalin 1.0 kg ha-1 PE fb imazethapyr 50 g ha-1 PoE and was on par with manual weeding with inter cultivation. All the varieties were comparable and equally effective in controlling weed dry matter. Yield of variety GBG 1 was higher due to higher yield attributes viz., no. of pods per plant and 100 seed weight. Among the weed control methods manual weeding treatment with inter cultivation recorded significantly higher yield followed by a combination of pendimethalin 1.0 kg ha-1 PE fb imazethapyr 50 g ha-1 PoE. Further, varieties GBG 1 and PU 31 performed better in manual weeding treatment with intercultivation and without any herbicide use.
Genetic Diversity Analysis and Validation of Microsatellite Markers Linked with Tolerance to Powdery Mildew Disease in Mungbean [Vigna radiata (L.) Wilczek]
Authors: Pavithra B.S. , Behera Laxmipreeya , Samal K.C. 
Published: March 2021

Background: Mungbean [Vigna radiata (L.) Wilczek] is a self-pollinated diploid grain legume (2n=2x=22) crop and has a genome size of 560 Mb. The present study was concentrate to portray the nature and extent of genotypic variation exists among mungbean collections for a range of traits of potential agronomic and adaptive interests. Many diseases affect mungbean, causes the major constraint in the increasing production among which Powdery mildew disease caused by Erisyphepolygoni is economically significant because it reduces photosynthetic activity and physiological changes which results in 20-40 per cent reduction in yield. Some gene-specific marker were analysed and found associated with powdery mildew resistance in mungbean genotypes.
Methods: The present investigation was carried out to evaluate thirty-one mungbean genotypes (including four checks) collected from the different parts of India. The genotypes were sown in an incomplete augmented bock design along with four checks varieties. viz. ‘Kamdev’, ‘OBBGG-52’, ‘IPM-02-14’ and ‘IPM-02-3’. All the mungbean genotypes were evaluated for different phenotypic traits and their tolerance to powdery mildew disease at two cropping seasons as well as at two different locations in Odisha. In this investigation, seven molecular markers viz., VrCSSTS1, VrCSSTS2, VrCSSSR3, CEDG191, MB-SSR238, CEDG166, CEDG282 were analysed.
Result: SSR marker such as VrCSSSR and VrCSSTS linked with powdery mildew resistance gene were tested in different genotypes with known powdery mildew reaction and the results showed a consistent association of the marker in all the powdery mildew resistant genotypes and absent in all the powdery mildew susceptible genotypes. The results confirmed the validation of these markers with the powdery mildew resistance gene in different genetic backgrounds. Similarly, CEDG191, CEDG166, CEDG282 markers, reported to be linked to powdery mildew resistance, amplified the respective marker fragment of 100 to 300 bp in mungbean genotypes and were polymorphic. The above PCR-based and locus-specific markers could be employed for marker-assisted breeding (MAB) program as well as genotype conservation. These linked markers will boost the efficiency and precision of powdery mildew resistance breeding in mungbean.
The Courage to SoTL
Authors: Smith Heather , Schlesselman Lauren , McSweeney-Flaherty Jill , Irving-Bell Dawne , Godbold Nattalia , Torcivia Patrice 
Published: March 2021

Using Parker Palmer’s The Courage to Teach, and in particular the notion of the undivided life, to guide reflections through the process of collaborative autoethnography, we reflect on our lived experiences with the Scholarship of Teaching and Learning (SoTL). The central question being: How does Palmer’s idea of the undivided life enable SoTL scholars to explore notions of identity and integrity that are intertwined with our academic practice? Ultimately, we found that Palmer’s insights provoked us to think deeply about our identities, and while perhaps we did not always see ourselves on the paths he illuminates, his work, and our collaborative ethnographic process, helped us to illuminate our own paths. More specifically, we share five themes arising from our collaborative autoethnography related to the importance of context and positionality, defining a SoTL scholar, the power to diminish, the importance of relationships and community, and collaborative autoethnography as method and process. Our stories highlight the need for us to see our community as complex, messy, and deeply human, and we remind readers of the need to think about the ethics of all methods and the power in our everyday practice to include or exclude.
Migration and intergenerational stability in female employment: The impact of differences between sending and receiving countries
Authors: Tsolak Dorian , Bürmann Marvin , Kroh Martin 
Published: March 2021

Objective: This article studies the intergenerational stability of employment in families of immigrants cross-nationally by investigating to what extent contextual differences between sending and receiving countries affect the transmission of labour force participation from mothers to daughters.
Background: It is often argued that a low level of labour force participation among female immigrants reflects gender norms inherited from the sending country, or, alternatively, that it is indicative of obstacles to social mobility in the receiving country. We seek to add to the existing research on this topic by providing evidence of differences between sending and receiving countries that systematically affect the labour market behaviour of female immigrants.
Method: We use individual-level data from the European Social Survey (ESS) for 35 receiving countries for a 14-year period (2004-2018) in combination with contextual data for 172 sending countries from 1960 to 2018. First, we provide an overview of employment rates and intergenerational employment stability for different combinations of sending and receiving contexts with respect to the labour force participation rates of female immigrants. Second, we corroborate our descriptive findings with multilevel models.
Results: Our paper shows that there are changes in the levels of intergenerational employment stability among immigrants depending on the differences in the female labour force participation rates between the sending and the receiving countries. We find that when women migrate from countries with low female labour force participation rates to countries with high female labour force participation rates, their probability of participating in the labour force increases. However, we also find that the levels of intergenerational employment stability in this group are high.
Conclusion: Intergenerational employment stability seems to be responsive to contextual differences between sending and receiving countries. We observe the highest levels of intergenerational stability in employment between mothers and daughters in families who migrated from countries with low female labour force participation rates to countries with high female labour force participation rates.
Optimising grapevine summer stress responses and hormonal balance by applying kaolin in two Portuguese Demarcated Regions
Authors: Bernardo Sara , Dinis Lia-Tânia , Luzio Ana , Machado Nelson , Gonçalves Alexandre , Vives-Peris Vicente , Pitarch-Bielsa Marta , López-Climent María F. , Malheiro Aureliano C. , Correia Carlos , Gómez-Cadenas Aurelio , Moutinho-Pereira José 
Published: March 2021

In Mediterranean-like climate areas, field-grown grapevines are typically exposed to severe environmental conditions during the summer season, which can negatively impact the sustainability of viticulture. Despite the short-term mitigation strategies available nowadays to cope with climate change, little is known regarding their effectiveness in different demarcated winegrowing regions with differing climate features. Hence, we applied a kaolin suspension (5 %) to Touriga-Franca (TF) and Touriga-Nacional (TN) grapevine varieties located in two Portuguese demarcated regions (Alentejo and Douro) with different mesoclimates to study its effect on the physiological performance, hormonal balance and ABA-related grapevine leaf gene expression during the 2017 and 2018 growing seasons. Data show that 2017 was warmer than 2018 due to the occurrence of two heatwaves in both locations, highlighting the protective effect of kaolin application under severe environmental conditions. In the first study year, at midday, kaolin enhanced water use efficiency (23 % in Douro and 13 % in Alentejo), carbon assimilation rates (PN; 72 % in Douro and 25 % in Alentejo), and the soluble sugar content of grapevine leaves, while decreasing the accumulation of plant growth regulators (ABA, IAA, and SA) during the ripening stage. The results show an up-regulation of ABA biosynthesis-related genes (VvNCED) in TF treated vines from the Douro vineyard mainly in 2017, suggesting an increased stress response under severe summer conditions. Additionally, kaolin triggered the expression of ABA-responsive genes (VvHVA22a and VvSnRK2.6) mainly in TF, indicating different varietal responses to kaolin application under fluctuating periods of summer stress.
Isolasi Senyawa Metabolit Sekunder dari Ekstrak Metanol Kulit Batang Bauhinia semibifida Roxb. dan Uji Aktivitas Antioksidan
Authors: Fadhli Haiyul , Ummah Nur Fitria Rohmatul , Rahmawati Noveri 
Published: March 2021

<p>Kulit batang <em>Bauhinia semibifida </em>Roxb. telah lama digunakan sebagai obat tradisional oleh masyarakat Melayu Lingga, Kepulauan Riau. Penelitian ini bertujuan untuk mengisolasi dan menguji aktivitas antioksidan senyawa metabolit sekunder dari ekstrak metanol kulit batang <em>B. semibifida </em>Roxb. Tiga isolat murni berupa satu senyawa alkaloid (BR1) dan dua senyawa flavonoid (BR2 dan BR3) telah berhasil diisolasi dengan cara ekstraksi menggunakan metode maserasi dan dilanjutkan fraksinasi dengan metode kromatografi kolom. Uji aktivitas antioksidan dilakukan terhadap isolat dengan metode 2,2 difenil-1-pikrilhidrazil (DPPH). Senyawa isolat BR1 menunjukan IC<sub>50 </sub>&gt;1000 µg/mL dikategorikan tidak aktif sebagai antioksidan, sedangkan senyawa isolat BR2 dan BR3 menunjukan IC<sub>50</sub> 2,92 µg/mL dan 4,39 µg/mL dikategorikan sangat kuat sebagai antioksidan jika dibandingkan dengan vitamin C sebagai kontrol. Berdasarkan evaluasi aktivitas antioksidan senyawa BR2 adalah senyawa pilihan yang dilanjutkan identifikasi dengan spektroskopi <em>Fourier-Transform Infrared Spectroscopy </em>(<em>FTIR</em>) dan <em>Proton Nuclear Magnetic Resonance</em> (<sup>1</sup>H-NMR) sehingga diduga senyawa isolat memiliki struktur dasar senyawa flavonoid.</p><p><strong>Isolation of Secondary Metabolite Compounds of Methanolic Extract of Steam Bark <em>Bauhinia semibifida</em> Roxb. and Their Antioxidant Activites</strong>. Stem bark of <em>Bauhinia semibifida</em> Roxb. has been long consumed as a medicinal herb by Lingga Malaya Ethnic. Therefore, this research aimed to isolate and examines the antioxidant activity of secondary metabolites from methanol extract of stembark of <em>Bauhinia semibifida</em> Roxb. Three pure compounds which are an alkaloid (BR1) and two flavonoids (BR2 and BR3) have been isolated by extraction using maceration method followed by fractionation using column chromatography method. Antioxidant activity assay was carried out by 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) method. Compound BR1 showed IC<sub>50</sub> &gt;1000 µg/mL categorized as inactive as an antioxidant, while compounds BR2 and BR3 showed IC<sub>50</sub> 2.92 µg/mL and 4.394 µg/mL, respectively, categorized as very strong as an antioxidant when compared to vitamin C as a control. Based on the evaluation of the antioxidant activity, the BR2 was selected compound and continued to identification by <em>Fourier-Transform Infrared Spectroscopy </em>(<em>FTIR</em>) and <em>Proton Nuclear Magnetic Resonance</em> (<sup>1</sup>H-NMR) spectroscopy so that the isolate has the basic structure of flavonoid compound.</p>
Evaluasi Persepsi dan Sikap Mahasiswa terhadap Lingkungan Pembelajaran Blended Learning Mata Kuliah Kalkulus Integral Prodi Pendidikan Matematika FMIPA UNJ
Authors: Tri Murdiyanto  , Dwi Antari Wijayanti  
Published: March 2021

Penelitian ini bertujuan menyelidiki persepsi mahasiswa prodi Pendidikan Matematika FMIPA UNJ tentang lingkungan pembelajaran blended learning dan sikap mereka terhadap pembelajaran blended learning pada mata kuliah kalkulus integral. Penelitian ini dilakukan dalam rangka pengembangan lingkungan pembelajaran blended learning yang digunakan dalam pembelajaran saat pandemi Covid-19, dengan menggunakan metode survei terhadap mahasiswa yang sedang mengambil mata kuliah kalkulus integral pada semester ganjil tahun 2020/2021. Lingkungan belajar blended learning mata kuliah kalkulus integral dirancang dengan pola setiap pertemuan memuat kegiatan sinkron dan asinkron yang disajikan dalam Learning Management System (LMS) yang disebut Multi Chanel Learning (MCL). Kegiatan dimulai secara asinkron, yaitu mempelajari materi presentasi sebelum video conference (vicon), dilanjutkan secara sinkron, yaitu melaksanakan vicon menggunakan platform Microsoft Teams disertai tanya jawab dan forum diskusi. Selanjutnya kegiatan pembelajaran kembali bersifat asinkron untuk mengeksplorasi materi dari link website dan link video pembelajaran yang dilanjutkan dengan forum diskusi secara asinkron. Kegiatan terakhir pembelajaran mencakup mengerjakan tugas individu dan evaluasi. Kuesioner persepsi mahasiswa terhadap lingkungan pembelajaran blended learning digunakan untuk menilai persepsi mahasiswa di lima dimensi inti dari lingkungan pembelajaran blended learning, yaitu infrastruktur, akses, interaksi, respon, dan hasil. Sikap mahasiswa terhadap pembelajaran blended learning diukur dengan instrumen sikap dengan skala likert yang meliputi variabel tujuan dan isi materi, proses belajar, dosen dalam pembelajaran, serta upaya eksplorasi materi. Hasil penelitian menunjukkan persepsi mahasiswa terhadap lingkungan pembelajaran blended learning pada mata kuliah kalkulus integral yang menyangkut infrastruktur, akses, interaksi, respon, dan hasil dapat menjadi tempat atau latar yang memungkinkan mereka mengalami proses belajar, serta memperoleh dan membangun pengetahuan. Sikap mahasiswa terhadap lingkungan pembelajaran blended learning pada mata kuliah kalkulus integral berkaitan dengan variabel tujuan dan isi materi, proses, dosen, dan upaya eksplorasi pengetahuan memberikan tingkat kepuasan yang tinggi dengan ketersediaan dan dukungan pembelajaran yang diberikan.
Pengaruh Model Pembelajaran Van Hiele dan Kecerdasan Spasial terhadap Kemampuan Penalaran Matematis Siswa di MAN Bekasi
Authors: Citra Diah Citra Ningrum , Ambarwati Lukita , Sampoerno Pinta Deniyanti 
Published: March 2021

Kemampuan penalaran matematis merupakan keterampilan yang sangat penting dalam pembelajaran matematika. Matematika merupakan hasil pemikiran manusia yang berkaitan dengan ide, proses dan penalaran. Tujuan dari penelitian ini adalah untuk mengetahui bagaimana model pembelajaran Van Hiele dapat memberikan kesempatan dan mendorong siswa untuk mempraktikkan keterampilan penalarannya dalam hal kecerdasan spasial siswa Sekaligus untuk mengetahui apakah terdapat pengaruh model pembelajaran Van Hiele terhadap kemampuan penalaran matematis siswa di MAN Bekasi melalui penggunaan materi dimensi tiga. Penelitian ini merupakan penelitian kuantitatif dan menggunakan metode penelitian eksperimen jenis Multistage Random Sampling. Populasi Penelitian ini adalah seluruh siswa kelas XII MAN di Bekasi. Teknik pengambilan sampel menggunakan teknik Multistage Random Sampling yaitu kombinasi dari metode pengambilan sampel yang digunakan adalah Cluster Stratified Sampling. Penelitian ini dilakukan di empat Madrasah Aliyah (MAN) di Negeri Bekasi yaitu MAN 1 Kota Bekasi, MAN 2 Kota Bekasi, MAN 2 Kabupaten Bekasi dan MAN 3 Kabupaten Bekasi dengan melibatkan 126 siswa dari kelas XII IPA. Dalam penelitian ini pengumpulan data menggunakan instrumen keterampilan penalaran matematis dan instrumen kecerdasan spasial. Uji instrumen dilakukan di empat sekolah kemudian data dianalisis, pertama dilakukan uji persyaratan yaitu uji normalitas menggunakan tes Kolmogorov Sminov dan uji homogenitas dengan menggunakan uji Bartlett serta uji kesamaan rata-rata dengan menggunakan uji Anava satu arah. Sebaran data diperoleh menggunakan Desain penelitian menggunakan desain analisis (ANNOVA) dengan rancangan 2x2.Setelah diperoleh data sampel kemudian pengujian hipotesis dilanjutkan dengan uji normalitas dengan menggunakan uji Kolmogorov Sminov dan uji Levene dalam menentukan homogenitas. Berdasarkan hasil analisis menggunakan uji-t menghasilkan sebesar 6,153 dan sebesar 1,979 yang mengakibatkan H0 ditolak pada taraf signifikan 0,05. Oleh karena itu, hasil penelitian ini memiliki kesimpulan bahwa terdapat pengaruh model pembelajaran Van Hiele terhadap kemampuan penalaran matematis ditinjau dari kecerdasan spasial siswa di MAN Bekasi diterima.
Analytical and Machine-Learning Analysis of Hydraulic Fracture-Induced Natural Fracture Slip
Authors: Zhao Peidong , Gray K. E. 
Published: March 2021

Summary
Stimulated reservoir volume (SRV) is a prime factor controlling well performance in unconventional shale plays. In general, SRV describes the extent of connected conductive fracture networks within the formation. Being a pre-existing weak interface, natural fractures (NFs) are the preferred failure paths. Therefore, the interaction of hydraulic fractures (HFs) and NFs is fundamental to fracture growth in a formation. Field observations of induced fracture systems have suggested complex failure zones occurring in the vicinity of HFs, which makes characterizing the SRV a significant challenge. Thus, this work uses a broad range of subsurface conditions to investigate the near-tip processes and to rank their influences on HF-NF interaction.
In this study, a 2D analytical workflow is presented that delineates the potential slip zone (PSZ) induced by a HF. The explicit description of failure modes in the near-tip region explains possible mechanisms of fracture complexity observed in the field. The parametric analysis shows varying influences of HF-NF relative angle, stress state, net pressure, frictional coefficient, and HF length to the NF slip. This work analytically proves that an NF at a 30 ± 5° relative angle to an HF has the highest potential to be reactivated, which dominantly depends on the frictional coefficient of the interface. The spatial extension of the PSZ normal to the HF converges as the fracture propagates away and exhibits asymmetry depending on the relative angle. Then a machine-learning (ML) model [random forest (RF) regression] is built to replicate the physics-based model and statistically investigate parametric influences on NF slips. The ML model finds statistical significance of the predicting features in the order of relative angle between HF and NF, fracture gradient, frictional coefficient of the NF, overpressure index, stress differential, formation depth, and net pressure. The ML result is compared with sensitivity analysis and provides a new perspective on HF-NF interaction using statistical measures. The importance of formation depth on HF-NF interaction is stressed in both the physics-based and data-driven models, thus providing insight for field development of stacked resource plays. The proposed concept of PSZ can be used to measure and compare the intensity of HF-NF interactions at various geological settings.