bluuebunny/crossref_metadata_2025 huggingface dataset:
Option Valuation in the Presence of Market Sentiment: Application to Listed Companies in the CAC40 Index
Authors: Boutouria Nahla , Hamad Salah Ben , Medhioub Imed
Published: October 2021

Asset pricing theory based on rationality was widely criticized in literature. Indeed, the non-inclusion of investor behavior and assuming market efficiency led to the weaknesses of option valuation through the traditional Black and Scholes model (1973). In this paper we examine the effect of the inclusion of investor behavior in the option pricing model. We test whether the Black and Scholes model in presence of sentiment behavior can lead to an improvement of the calculation of call price. Using daily data of 30 listed companies of France in the CAC40 index for the period June 18, 2009 to May 09, 2018, results showed that the introduction of sentiment effect in the Black and Scholes model provides better estimates of the call price than that obtained by the standard Black-Scholes model. In fact, we obtain an average gain of about 44% in terms of relative change in mean square error between both methods.
PENGARUH MOTIVASI, KOMPETENSI DAN LINGKUNGAN KERJA TERHADAP KINERJA KARYAWAN REKAM MEDIS DI RSJ Dr. RADJIMAN LAWANG
Authors: Kusuma Wahyu Teja , Rikatsih Nindynar , Wardani Silvia Intan
Published: October 2021

Rumah sakit merupakan salah satu fasilitas kesehatan tempat masyarakat memperoleh pelayanan kesehatan. Salah satu tenaga di rumah sakit yang sangat berpengaruh terhadap mutu layanan rumah sakit adalah karyawan dengan pelayanannya. Penelitian ini bertujuan untuk mengetahui pengaruh motivasi, kompetensi dan lingkungan kerja terhadap kinerja karyawan rekam medis di RSJ Radjiman Lawang. Sampel dalam penelitian ini adalah seluruh karyawan rekam medis yang bekerja sebagai karyawan rekam medis di RSJ Radjiman Lawang sebanyak 102 orang. Metode analisis data yang digunakan adalah regresi linier Hasil penelitian menunjukkan motivasi, kompetensi dan lingkungan kerja secara bersama-sama berpengaruh terhadap kinerja karyawan rekam medis (n= 67,120 ; p = 0,000). Sedangkan secara parsial ada pengaruh antara motivasi terhadap kinerja karyawan rekam medis (n = 9,710 ; p=0,023), antara kompetensi terhadap kinerja karyawan rekam medis (n=5,894 ; p =0,000), dan antara lingkungan kerja terhadap kinerja karyawan rekam medis (n= 5,237; p = 0,000). Sedangkan untuk persamaan regresinya adalah Y=1,721+0,518X1+1,072X2 + 0,137X3, dimana Y adalah kinerja, X1 adalah motivasi, X2 adalah kompetensi dan X3 adalah lingkungan kerja. Sedangkan nilai Adjusted R Square 0,783 artinya variabel motivasi, kompetensi dan lingkungan kerja mempengaruhi kinerja karyawan rekam medis sebesar 78,3% sedangkan sisanya 21,7% dipengaruhi oleh variabel lainnya yang tidak termasuk dalam penelitian ini. Kesimpulan Manajemen RSJ Radjiman Lawang perlu melakukan kiat-kiat untuk meningkatkan motivasi, kompetensi dan memperhatikan lingkungan kerja yang dapat meningkatkan kinerja karyawan rekam medis. Peningkatan kinerja rekam medis dapat memberikan dampak meningkatnya mutu pelayanan rumah sakit.
PENGETAHUAN REMAJA PUTRI TENTANG DAMPAK PERNIKAHAN DINI BAGI KESEHATAN REPRODUKSI
Authors: Syefinda Putri Evita
Published: October 2021

Pendahuluan Di era sekarang masih banyak kita jumpai pernikahan dini (pernikahan pada remaja di bawah usia 20 tahun). Salah satu penyebabnya adalah kurangnya pengetahuan tentang dampak pernikahan dini bagi kesehatan reproduksi. Tanpa mereka sadari bahwa pernikahan dini dapat berdampak besar bagi kesehatan reproduksi (khususnya rahim) belum sempurna, sehingga memicu terjadinya abortus atau keguguran. Tujuan dari penelitian ini untuk mengetahui pengetahuan remaja putri tentang dampak pernikahan dini bagi kesehatan reproduksi. Metode Penelitian ini menggunakan desain penelitian deskriptif yang dilakukan di RW 07 Kelurahan Pandanwangi Kota Malang pada tanggal 11 – 20 Desember 2020 dengan populasi sejumlah 65 remaja putri dan sampel sejumlah 40 remaja putri. Sampling yang digunakan accidental sampling. Analisa data menggunakan analisis univariat. Alat ukur kuesioner serta pengolahan data berupa editing, coding, scoring, tabulating, dan presentase. Hasil penelitian menunjukkan setengahnya memiliki pengetahuan kurang tentang dampak pernikahan dini bagi kesehatan reproduksi sebanyak 20 responden (50%), hampir setengahnya memiliki pengetahuan baik sebanyak 12 responden (30%), dan sebagian kecil memiliki pengetahuan cukup sebanyak 8 responden (20%). Hasil tersebut kemungkinan besar dikarenakan faktor yang mempengaruhi pengetahuan yaitu usia, pendidikan, dan sumber informasi. Kesimpulan Melihat hasil penelitian ini, diharapkan remaja putri lebih aktif mengikuti kegiatan penyuluhan agar dapat meningkatkan pengetahuan tentang dampak pernikahan dini bagi kesehatan reproduksi.

 

Kata Kunci: Pengetahuan Remaja Putri, Pernikahan Dini, Kesehatan Reproduksi
Metabolic Memory in Diabetes – Mechanistic Insights and the Impact of Cardiovascular Medication
Authors: Sosdean Raluca , Ionica Loredana N. , Merce Adrian P. , Muntean Danina M. , Sturza Adrian
Published: October 2021

The prevalence of diabetes mellitus is increasing worldwide. Endothelial dysfunction plays a critical role in the pathophysiology of diabetes-related vascular complications. Several studies have shown that restoring blood glucose levels failed to reduce the incidence of major cardiovascular events in diabetic population, hence confirming the idea of “metabolic/hyperglycemic memory”. The major pathomechanism is, most likely, represented by the overproduction of reactive oxygen species (ROS). The purpose of this minireview is to summarize current knowledge about the mechanisms of metabolic memory and the impact of cardiovascular medication on this phenomenon, respectively.
Developing the Tissue Engineered Heart Valve – a Descriptive Hemodynamic and Ultrasound in Vitro Characterization Study of Heart Valves in a Bioreactor
Authors: Movileanu Ionela , Nistor Dan Octavian , Sierad Leslie , Brinzaniuc Klara , Oprita Codrut , Harpa Marius Mihai , Preda Terezia , Cotoi Ovidiu , Hussein Hussam AL , Hussein Hamida AL , Chertes Alexandru , Suciu Horatiu , Simionescu Agneta , Simionescu Dan
Published: October 2021

The inherent limitations of current heart valve substitutes create the premise for the Tissue Engineered Heart Valve (TEHV), considered the perfect substitute. We aimed to compare in vitro hemodynamic performances of our TEHV, the conventional prosthetic valve and similar porcine valves, by ultrasonography and geometry resulting in six valve models analysis. In a bioreactor, pulmonary and aortic physiology were replicated thus hemodynamic characteristics were tested. Using ultrasound, transvalvular pressure gradients and flow were measured and used to calculate their valvular functional area (VFA) and using a high-speed camera, the geometric peak opening area (GOA) was assessed. The obtained results were normalized to the diameter of the biological prosthesis in order to increase the measurement's accuracy. The ultrasound revealed normal function of all valves and physiologic transvalvular pressure gradients. The TEHV scaffold revealed absence of laceration or dehiscence, and performances in accordance with the control prostheses. The GOA was facile to obtain and the normalized values proved to be greater than the calculated functional area in all analyzed cases and the peak opening areas resulted lesser for the aortic conditions for all six used valves prototypes. To our knowledge, this is the first study to use bioreactors, for in vitro evaluation of heart valves.
Structural and mechanical properties of new sizing compositions based on natural and synthetic water-soluble polymers
Authors: Mardonov Salokhiddin , Saidov Khasan
Published: October 2021

In the article results of studying specific structurally-mechanical properties new developed sizing compositions on the basis of сorn starch and water-soluble synthetic polymeric preparations such as K-4 and uniflock made in Company "Navoiazot" are given. It is established that, introduction in starch pastes acrylates leads to increase coefficient of thixotropic restoration, i.e. to increase of speed relaxation processes.
Adoption Behaviour of Improved Sugarcane Cultivation Practices among the Farmers of Gonda District of Uttar Pradesh
Authors: Yadav Pawan Kumar , Mazhar Syed H. , Jahanara Jahanara
Published: October 2021

The present study is an attempt to assess the socio-economic characteristics and utilization level of source of Information in improved cultivation practices of sugarcane by the farmers of Gonda District in Uttar Pradesh. Sugarcane cultivation is not prominent in this area however a large number of farmers cultivate cash crop, due to availability of information or communication channel about package of practices. Primary data from 120 respondents were collected through face to face interview. Descriptive research design had been followed for the present study. Random and Purposive sampling had been used for the present study. Farmers had a highest utilization of information by friend, neighbor and relatives (83.34%), followed by radio i.e.75%.Majority of (48.33%) farmers had medium level of utilization, followed by 29.16% of farmers had high level utilization about improved cultivation practices of sugarcane.
Mô phỏng sự hình thành và lan truyền vết nứt trong dầm bê tông cường độ cao có chất kết dính bổ sung nano silica bằng phương pháp phase field
Authors: Vũ Bá Thành , Ngô Văn Thức , Bùi Tiến Thành , Trần Thế Truyền , Đỗ Anh Tú
Published: October 2021

Trong thời gian gần đây, phương pháp phase field là một công cụ mô phỏng mạnh để dự đoán sự phát triển vết nứt trong kết cấu. Phương pháp này sử dụng biến phase field và hàm suy biến để mô tả sự suy giảm năng lượng tồn tại trong vật thể cũng như trạng thái của vết nứt dựa vào việc giải quyết kết hợp giữa bài toán phase field và bài toán cơ học. Trong nghiên cứu này, phương pháp phase field được sử dụng để xác định: (i) sự hình thành và lan truyền vết nứt trong kết cấu; (ii) đường cong ứng xử giữa tải trọng và chuyển vị; (iii) đường cong quan hệ giữa tải trọng và độ mở rộng miệng vết nứt do chuyển vị (CMOD) và (iv) công cơ học phá hủy của dầm bê tông chịu uốn ba điểm. Các mẫu dầm này được làm từ bê tông cường độ cao với sự thay đổi tỷ lệ chất kết dính bổ sung nano-silica (NS) từ 0% tới 1,5%. Kết quả tính toán từ phương pháp mô phỏng phù hợp với kết quả thực nghiệm và lý thuyết của các nghiên cứu trước đó. Phương pháp phase field có thể là một công cụ đáng tin cậy và hiệu quả để mô phỏng sự hình thành và lan truyền vết nứt và ứng xử cơ học của các kết cấu bê tông cường độ cao và bê tông tính năng cao.
Modelling school travel mode choice – the case of hanoi, vietnam
Authors: Minh Hieu Nguyen
Published: October 2021

The COVID-19 outbreak has resulted in adopting massively social distancing measures to tame the human-to-human transmission of the new coronavirus and protect public health. These intervention policies have caused changes in travel behavior, thereby expressing a need to update profiles of factors associated with mode choice. To respond to this research gap in part, this current study aims to model children’s mode decisions for school trips in the post-pandemic time in Hanoi. As regards mode usage, cycling is the main mode of active transport with a share at 23.3%, doubling the rate of 11% for walking. The dominant mode of traveling to school is the motorized modes (i.e., cars and motorcycles) with a proportion of 60%, meanwhile, school buses account for only 6.2%. As regards the determinants, when growing up, children tend to shift from being driven to traveling actively. The availability of cars increases the likelihood of using other modes compared to cycling. An opposite association is seen for the availability of bicycles. The flexibility in terms of a mother’s job is involved in a higher possibility of being driven for a child. A home-school distance less than 1 km is more suitable for walking compared to cycling; however, an inverse relationship is witnessed for a distance between 1 and 2 km. A distance over 2 km is more appropriate for motorized modes and school buses. To promote active transport to school, children’s travel demand should be taken transport planning into consideration. Developing cycling and walking facilities is essential, especially in urban districts. Additionally, limiting the use of private motorized modes would be useful.
Exploring factors associated with red-light running: a case study of Hanoi city
Authors: Chu Tien Dung
Published: October 2021

Red-light running (RLR) is the most significant factor involved in traffic crashes and injuries at signalized intersections. In Vietnam, little knowledge of factors affecting RLR has been found. This paper applied an ordered probit model to investigate factors associated with RLR using questionnaire data collected in Hanoi. Generally, this paper found that males and motorcyclists have a higher likelihood of RLR than females and car drivers. In addition, the younger and lower-income road users and the ones who are businessmen and who have a commuting trip in off-peak hours are more likely to run the red light. By contrast, the road users who go to school and the people who understand traffic law are less likely to violate the red light. In the future, it is necessary to collect data in different cities to generalize the results. In addition, may need to apply a more powerful method such as the latent class model, which can discover hidden facts among respondents. In the new model, other factors such as weather, waiting time, and countdown signal will be considered to investigate their effects on RLR.
Repairing the damage: cleaning up hazardous coal ash can create jobs and improve the environment
Authors:   Union of Concerned Scientists, Richardson Jeremy , Dixon Eric , Boettner Ted ,   Ohio River Valley Institute
Published: October 2021

Although coal has powered the nation for generations and today offers well-paying jobs—often the best opportunities in more rural areas—coal negatively affects human health and the environment at every point in its life cycle: when it is mined, processed, transported, burned, and discarded (Freese, Clemmer, and Nogee 2008). Local communities— often low-income communities and/or communities of color—have for decades borne the brunt of these negative impacts, including air pollution, water pollution, and work- place injuries, illnesses, and fatalities.
Les faces du bonheur dans Vol de nuit d’Antoine de Saint-Exupéry
Authors: Gli Mawuyra
Published: October 2021

On peut supposer qu‟aussi loin qu‟on peut remonter, l‟humanité en général a été à la recherche d‟une vie harmonieuse, une vie sans tristesse, sans douleur. Mais après le péché originel, l‟homme est dit « déchu » de ce statut primaire. Ainsi dit, l‟homme a toujours une réminiscence de son statut original et il ne cesse de chercher à tâtons, ce bonheur ou statut « perdu ». Cette question du bonheur a retenu l‟attention des psychologues, des philosophes et psychanalystes (Epicure, Kant, Bentham, Socrate, Aristote, Freud.) depuis un certain temps. En tant que notion, le terme « bonheur » est passé par une série de moules qui lui ont aussi prêté leur empreinte, l‟obligeant ainsi à prendre divers formes et sens. Il connaîtra un élargissement de sens et de formes selon ce que chaque auteur entend par le terme. La présente étude vise à analyser les faces du bonheur dans Vol de Nuit d‟Antoine de Saint-Exupéry. Nous adoptons pour ce travail, l‟approche thématique. La critique thématique se complétera par la théorie des besoins de l‟être humain de Maslow. La collecte des données ou le recueil des informations est purement documentaire. L‟étude cherche donc à établir un lien entre le bonheur individuel et le bonheur général dans Vol de Nuit de Saint-Exupéry.
Serial Drawing
Authors: Graham Joe
Published: October 2021

Serial Drawing offers a timely and rigorous exploration of a relatively little-researched art form. Serial drawings – artworks that are presented as singular works but are made up of distributed parts – are studied in fresh, contemporary terms with a novel philosophical approach, emphasizing both the way in which this unique form of visual art exists in the world, and how it is encountered by the beholder.

Inspired by the quadruple framework of Graham Harman’s object-oriented ontology, Joe Graham explores a variety of serial drawings according to the idea that, in being serially arrayed, such artworks constitute a rather particular form of art object: one which is both unified yet pluralised, visible yet withdrawn. Examining works by artists such as Alexei Jawlensky, Ellsworth Kelly, Hanne Darboven, Jill Baroff and Stefana McClure, Graham interrogates the manner in which serial drawings are able to be appreciated by the viewer who beholds them in object-oriented terms. This task is carried out by paying attention to the manner in which three tensions – space, time and seriality – emerge for consideration within the beholder’s performative encounter with the work: an encounter which is ‘seen serially’, and which the medium of drawing specifically directs their attention towards.
How Can Networks Cultivate the Conditions for Young Creatives to Thrive?
Authors: Nolan Parker Stephen
Published: October 2021

As observers to the intersectional fields of culture, education, and social change, Creative Generation witnessed the chosen organizational structure of “networks” come into vogue – particularly as smaller, community-based organizations have begun to participate in larger-scale, collaborative initiatives. In almost all examples, the individuals and organizations involved do their collaborative work through a “network,” using any number of connections and patterns. This qualitative inquiry sought to understand how applying Network Theory to organizational structures can cultivate the conditions to support young creatives. Through literature and conducting interviews with leaders of diverse networks in the arts and cultural education fields, this project provides an overview of Network Theory and examines examples of various models. This report proposes the following set of provocations for the field to interrogate the use of Network Theory in their projects’ implementation: strong connections between the network and its participants, shared power among network leadership and participants, clear expectations about funding, and specific role for young creatives in decision-making.
Pelayanan Profesional Guru Bimbingan Konseling Dalam Meminimalisir Kesalahpahaman Tentang Bimbingan Konseling Di Sekolah
Authors: Yeni Karneli Azmatul Khairiah Sari, Prayitno,
Published: October 2021

Guru bimbingan konseling adalah penyelenggara kegiatan bimbingan konseling di sekolah. Guru bimbingan konseling harus memiliki empat kompetensi. Kompetensi kepribadian, kompetensi profesional, kompetensi sosial dan kompetensi pedagogik. Kompetensi profesional adalah kompetensi yang penting bagi seorang guru karena guru harus profesional di bidangnya. Profesional yang menandakan ia adalah orang yang ahli untuk melaksanakan pelayanan bimbingan konseling. Seorang guru BK harus memberikan pelayanan profesional kepada siswanya di sekolah. Dengan pelayanan profesional diharapkan guru BK memiliki image positif dari siswanya dan masyarakat luas lainnya. Adanya image ini tentu akan memiliki dampak terhadap penilaian bagaimana bimbingan konseling tersebut. Banyaknya kesalahpahaman tentang Bimbingan Konseling menyebabkan keprofesionalan Bimbingan Konseling menjadi tercemar. Menganggap guru Bimbingan Konseling yang tidak profesional, guru Bimbingan Konseling hanya tidak memiliki kejelasan dalam bekerja dan banyak lagi anggapan miris mengenai Bimbingan Konseling oleh siswa dan pihak lainnya. Pada dasarnya bimbingan konseling merupakan suatu profesi yang diakui oleh Undang-Undang namun bagi sebagian yang lainnya itu dipandang sebelah mata. Diharapkan dengan adanya pelayanan profesional dari guru Bimbingan konseling bisa mematahkan anggapan salah mengenai bimbingan konseling dan bisa meminimalisir kesalahpahaman tentang bimbingan konseling. Dengan adanya pelayanan profesional dari guru bimbingan konseling membuktikan bahwa seorang guru adalah seorang yang benar profesional. Pelayanan profesional yang dilaksanakan oleh guru bimbingan konseling menandakan seorang guru bimbingan konseling layak untuk menjadi seorang guru. Dan dengan profesionalnya ini bisa meminimalisir kesalahpahaman tentang bimbingan konseling.
Meningkatkan Hasil Belajar Siswa Menggunakan Model Pembelajaran Make A Match Pada Pelajaran IPA Materi Sifat-Sifat Cahaya Di Kelas V SD Negeri 060952 Medan Labuhan T.P. 2019/2020
Authors: Johannes Johannes
Published: October 2021

Penelitian ini dilatar belakangi oleh model pembelajaran yang digunakan guru tidak sesuai dengan materi pelajaran sehingga menyebabkan rendahnya minat belajar hasil belajar siswa. Pelaksanaan penelitian ini bertujuan untuk mendeskripsikan peningkatan hasil belajar belajar siswa dengan menggunakan strategi pembelajaran make a macth pada mata pelajaran IPA materi Sifat-Sifat Cahaya kelas V SD Negeri 060952 Medan Labuhan.  Jenis penelitian ini adalah penelitian tindakan kelas yang terdiri dari siklus perbaikan pembelajaran. Sebagai subjek penelitian ditetapkan sebanyak 30 siswa yang berasal dari siswa kelas V SD Negeri 060952 Medan Labuhan. Kegiatan penelitian dilakukan pada saat pembelajaran IPA berlangsung dengan materi Sifat-Sifat Cahaya.  Untuk memperoleh data yang dibutuhkan untuk penelitian ini menggunakan instrumen test hasil belajar siswa dan kegiatan observasi. Berdasarkan hasil penelitian maka dapat dikemukakan kesimpulan bahwa dengan menggunakan model make a macth aktivitas pembelajaran semangkin meningkat, siswa belajar lebih aktif, pembelajaran berpusat pada guru sehingga dapat meningkatkan hasil belajar siswa IPA siswa materi Sifat-Sifat Cahaya di kelas V SD Negeri 060952 Medan Labuhan.
Penerapan Metode Outbond Pada Sekolah Alam Untuk Menciptakan Pembentukan Leadership
Authors: Setiawati Nanda Ayu
Published: October 2021

Pelaksanaan belajar mengajar memiliki ketrkaitannya dengan tiga ranah perkembangan, yaitu ranah kognitif, ranah afektif dan ranah psikomotorik. Metode outbound merupakan melatih perkembangan psikomotorik peserta didik. Selain itu, dapat mengembangkan kemampuannya dan melihat peserta didik lainnya dalam menghadapi tantangan yang besar sekalipun. Metode outbound selalu memperturutkan permainan yang besifat  riang bagi  peserta didik, menuntut  eserta didik  berpikir secara  logis, serta menantang yang membutuhkan keberanian peserta didik untuk melakukannya. Penelitian yang dilakukan bertujuan untuk memperoleh gambaran tentang pelaksanaan metode outbond di School of Univere. Teknik pengumpulan data, antara lain: :wawancara, observasi , serta dokumentasi. Analisis data penelitian ini menggunakan  model interaktif Miles dan Huberman, adapun langkah-langkah yang ditempuh seperti data reduction, penyajian data, kesimpulan/verifikasi. Metode outbond ini dianjurkan dapat diterapkan di sekolah konvensional, dengan cara mengakolaborasi kurikulum dan model pembelajaran khas School of Universe. Metode outbond  berupaya melatih sikap tunggang hati peserta didik, mampu bekerjasama dengan kelompok  yang merupakan bagian dari karakter leadership
Experiment Investigation On Concrete With Partial Replacement Of Cement By Cow Dung Ash
Authors:   Civil Engineering Department Saranathan College of Engineering Tiruchirapalli, India., G Mr. Venkatesan. , R Poovadharani. ,   Civil Engineering Department Saranathan College of Engineering Tiruchirapalli, India., L Neerkamali. ,   Civil Engineering Department Saranathan College of Engineering Tiruchirapalli, India.
Published: October 2021

Experimental investigations were carried out to study the cow dung ash on the strength of concrete. Cement was partially replaced with four percentages (5%, 10%, 15%, 20%) of cow dung ash by weight in M20 grade concrete mix. Test performed on the concrete mix are compressive strength, splitting tensile strength and workability. The compressive strengths of the concrete specimens were determined at 7 and 28 days respectively. The tests were performed on the moulds of size (150mm x150mm x150mm).Workability test is done using compaction factor apparatus. Workability Test shows that workability of concrete decreases as percentage of cow dung ash increases in concrete mix. When compared to normal concrete the concrete containing 10% of CDA has 17% increase in compressive strength and 15% increase in Tensile Strength. The Compressive Strength and Tensile strength tends to decrease after 10%. Thus 10% replacement of cement by CDA gives satisfactory result.
Genetic diversity analysis and metabolite profiling of pharmaceutical value Indigenous rice varieties of Tamil Nadu (Oryza sativa Linn.)
Authors:   Department of Biotechnology, Periyar University, Salem, Tamil Nadu 636011, India., Settu Rajalakshmi , Balakrishnan Jayanthi ,   Department of Biotechnology, Periyar University, Salem, Tamil Nadu 636011, India., Dhavamani Sarathi Kannan ,   Department of Biotechnology, Periyar University, Salem, Tamil Nadu 636011, India., Ravi Manoj Srinivas ,   Department of Biotechnology, Periyar University, Salem, Tamil Nadu 636011, India., Namasivayam Elangovan ,   Department of Biotechnology, Periyar University, Salem, Tamil Nadu 636011, India., Padiksan Indra Arulselvi ,   Department of Biotechnology, Periyar University, Salem, Tamil Nadu 636011, India., Palanisamy Ravishankar ,   Department of Medicine, McGill University, Montreal, Canada H3A2B4.
Published: October 2021

Evaluation of local indigenous medicinal rice (Oryza sativa Linn.) varieties using molecular and metabolic profiling plays dynamic role for unravelling the genetic variability and restorative bio actives. In the present study, 18 screened random decamer (RAPD) markers were used to analyze genetic diversity and relationship among 25 indigenous landraces and 1 commercial rice varieties (White ponni), and GC-MS profiling of phylogenetic clusters positioned 4 random indigenous rice varieties and 1 White ponni rice were documented for exploring bioactive metabolites. Random amplified polymorphic DNA (RAPD) analysis of twenty-six rice varieties of Tamil Nadu divulges significant genetic differentiation. The primers produced total of 92 bands with size ranges from 100-8500bp out of 74 were polymorphic bands indicating 80% polymorphism. The mean values of RAPD for polymorphism information content (PIC) of 0.268, effective multiple ratio (EMR) of 23.38, marker index (MI) of 7.39 and the resolving power (Rp) of 4.34. The primer OPA-02, OPD-08, OPF-13 produced maximum number of bands (8), OPAA-07 produced minimum number of band (2). The UPGMA dendrogram were constructed based on Jaccard’s similarity coefficients. The dendrogram resolved the indigenous rice varieties into 3 main clusters and 3 monoclades ranged from 0.467 to 0.860, commercial rice variety shows marginal ungrouped position of 1. In the 3-main clustering, based GC-MS profilling (methanol and acetone rice bran extracts) of Karuppu Kavuni, Karuthakar, Kottara samba, Kaivara samba and ungrouped position of White ponni revealed 88 distinctive bioactive metabolites. And profiling results substantiate that the traditional rice varieties hold promising therapeutic metabolites for sedentary lifestyle disorders.
Methodological approaches to the design of complexes of anti-erosion measures in the Kabardino-Balkarian Republic
Authors:   ООО ", Saakian Alexander ,   БАЛАНС ПРОФИ"
Published: October 2021

Approaches to the design and creation of complexes of anti-erosion measures are presented, which are based on a certain algorithm of measures that takes into account predetermined parameters. The proposed approaches were developed on the basis of the results of many years of research carried out at specific sites with certain natural and anthropogenic conditions. In addition, these approaches were implemented at certain territorial sites of the Kabardino-Balkarian Republic with thoroughly studied natural and anthropogenic conditions. Keywords: SOIL, INTENSIFICATION, POTENTIAL, EVALUATION, EROSION, PROTECTION, COMPLEX, ECOLOGICAL SUSTAINABILITY
U.S. AI Workforce: Policy Recommendations
Authors:   Center for Security and Emerging Technology, Gehlhaus Diana , Koslosky Luke , Goode Kayla , Perkins Claire
Published: October 2021

This policy brief addresses the need for a clearly defined artificial intelligence education and workforce policy by providing recommendations designed to grow, sustain, and diversify the U.S. AI workforce. The authors employ a comprehensive definition of the AI workforce—technical and nontechnical occupations—and provide data-driven policy goals. Their recommendations are designed to leverage opportunities within the U.S. education and training system while mitigating its challenges, and prioritize equity in access and opportunity to AI education and AI careers.
De "versão" a "narrativa" no Manual de história oral
Authors: Alberti Verena
Published: October 2021

O artigo procura reforçar o caráter de documento da entrevista de história oral, relacionando-a ao conceito de "narrativa" da teoria literária. O ponto de partida são as mudanças a serem implementadas na 3ª edição do Manual de história oral (publicado pela primeira vez em 1990), em que, no lugar de "versão" para se referir à entrevista, serão usados "entrevista", "narrativa" ou "relato", para evitar que, por "versão", se entenda uma notí­cia ou história infundada. Como recurso argumentativo, o artigo faz um paralelo com cartas escritas pelo historiador Joel Rufino dos Santos para seu filho, quando esteve preso, na década de 1970.
Ditadura, repressão e resistência: memórias de um militante polí­tico
Authors: Hebling Milene Cristina
Published: October 2021

Luiz Marcos de Magalhães Gomes foi um importante militante polí­tico durante o regime militar no Brasil. Devido í  sua grande participação no movimento estudantil e na organização chamada Ação Popular, ele atraiu para si a atenção de órgãos repressores, tendo sido preso por motivos polí­ticos. Sua entrevista fornece elementos importantes para a compreensão dos movimentos de resistência í  ditadura e da repressão organizada pelo governo.
Como se constrói uma universidade: a trajetória da UERJ na visão de seus reitores
Authors: Cazes Leonardo Faria
Published: October 2021

O presente artigo parte dos depoimentos de dois ex-reitores da Universidade do Estado do Rio de Janeiro (UERJ) nas décadas de 1960 e 1970, Haroldo Lisboa da Cunha e João Lyra Filho, para analisar o processo de consolidação e expansão da instituição no perí­odo, incluindo a construção do campus do Maracanã e a reorganização interna de acordo com os princí­pios da Reforma Universitária de 1968. Os depoimentos, os primeiros tomados pelo programa Memória UERJ, em 1980, permitem compreender as visões dos ex-reitores sobre suas ações, as ideias que os motivaram e os conflitos e alianças estabelecidos com o campo polí­tico da cidade do Rio de Janeiro e do Brasil.
História oral e empresas: reflexões a partir do Museu da Pessoa
Authors: Marino Ian Kisil
Published: October 2021

Este artigo discute a intersecção entre a história oral e a história empresarial a partir do projeto Educar para o futuro, encomendado pela Fundação Bradesco ao Instituto Museu da Pessoa. Osprocedimentos historiográfi cos dessa instituição identifi cam-se com a história oral, alimentando uma retórica de empoderamento comunitário a partir da constituição de acervos e narrativas compostos por depoimentos orais. Simultaneamente, o Instituto presta serviços a empresas, atendendo a demandas e contingências por vezes divergentes das historiográficas. Dada a consolidação de um mercado de histórias empresariais sob encomenda no Brasil nas últimas duas décadas – no qual a história oral ocupa um espaço importante –, como avaliar as possibilidades e os limites para a prática historiográfica? O caso observado é paradigmático, provendo substratos para melhor se compreender as implicações teóricas e metodológicas da intersecção entre história oral e empresas no Brasil.
Território de afetos: práticas femininas antirracistas nos quilombos contemporâneos do Rio de Janeiro
Authors: Almeida Mariléa
Published: October 2021

A visibilidade atual das mulheres quilombolas é o ponto de partida deste artigo que pergunta sobre os modos femininos de fazer política, especialmente a dimensão antirracista dessas ações. O recorte temporal parte do final de 1980, quando foi criado o direito territorial para as comunidades remanescentes de quilombo. O trabalho focaliza práticas de quilombolas do Rio de Janeiro que, ao transmitirem  saberes, fortalecem os laços entre as pessoas e os territórios onde vivem. Essas ações, compreendidas como territórios de afetos, ampliam espaços de subjetivação por meio dos deslocamentos de sentimentos provocados pelos dispositivos racistas, sexistas e classistas que incidem sobre seus corpos e territórios.
The relationship between PM2.5 and anti-cyclone wave activity during summer over the United States
Authors: Wang Ye , Mahowald Natalie , Hess Peter , Sun Wenxiu , Chen Gang
Published: October 2021

Abstract. To better understand the role of atmospheric dynamics in modulating surface concentrations of fine particulate matter (PM2.5), we relate the anti-cyclone wave activity (AWA) metric and PM2.5 data from the Interagency Monitoring of Protected Visual Environment (IMPROVE) data for the period of 1988–2014 over the US. The observational results are compared with hindcast simulations over the past two decades using the National Center for Atmospheric Research-Community Earth System Model (NCAR CESM). We find that PM2.5 is positively correlated (up to R = 0.65) with AWA changes close to the observing sites using regression analysis. The composite AWA for high aerosol days (all daily PM2.5 above the 90th percentile) shows a similarly strong correlation between PM2.5 and AWA. The most prominent correlation occurs in the Midwestern US. Furthermore, the higher quantiles of PM2.5 levels are more sensitive to the changes in AWA. For example, we find the averaged sensitivity of the 90th percentile PM2.5 to changes in AWA is approximately three times as strong as the sensitivity of 10th percentile PM2.5 at one site (Arendtsville, Pennsylvania; 39.92° N, 77.31° W). The higher values of the 90th percentile compared to the 50th percentile in quantile regression slopes are most prominent over the northeastern US. In addition, future changes in US PM2.5 based only on changes in climate are estimated to increase PM2.5 concentrations due to increased AWA in summer over areas where PM2.5 variations are dominated by meteorological changes, especially over the western US. Changes between current and future climates in AWA can explain up to 75 % of PM2.5 variability using a linear regression model. Our analysis indicates that higher PM2.5 concentrations occur when a positive AWA anomaly is prominent, which could be critical for understanding how pollutants respond to changing atmospheric circulation, as well as developing robust pollution projections.
Interaction between aerosol and thermodynamic stability within the PBL during the wintertime over the North China Plain: Aircraft observation and WRF-Chem simulation
Authors: Luo Hao , Dong Li , Chen Yichen , Zhao Yuefeng , Zhao Delong , Huang Mengyu , Ding Deping , Liao Jiayuan , Ma Tian , Hu Maohai , Han Yong
Published: October 2021

Abstract. Aerosol-planetary boundary layer (PBL) interaction has been proposed as a key mechanism for stabilizing the atmosphere and exacerbating surface air pollution. Although the understanding of this process has progressed enormously, its magnitude and impact remain uncertain and vary widely concerning aerosol types, vertical distributions, synoptic conditions, etc. In this study, our primary interest is to distinguish the aerosol-PBL interaction of absorbing and scattering aerosols under contrasting synoptic patterns and aerosol vertical distributions. Detailed in-situ aircraft (KingAir-350) measurements and online coupled model Weather Research and Forecasting with Chemistry (WRF-Chem) simulations are explored over the North China Plain (NCP). Furthermore, a long-term PBL stability trend from 1980 to 2020 over the NCP is also investigated. The aircraft measurements and surface observations show that the surface air pollution over the Baoding City on 3 January is heavier than that on 4 January, 2020. In addition, the aerosols are restricted to the low layer on 3 January, whereas the aerosols mix more homogeneous upwards on 4 January. Thereupon, we focus on the two days with distinct synoptic circumstances, PBL stability, and aerosol vertical distributions over the NCP. According to the WRF-Chem modelling, the synoptic pattern over the Baoding City differs between the two days. The prevailing wind direction is opposite with a southwest wind on 3 January and a northeast wind on 4 January. The results indicate that the synoptic condition may affect the PBL thermal structure, thus affecting the aerosol vertical distribution. Additionally, the sensitive numerical experiments reveal that the light-absorbing and light-scattering aerosols have different effects on altering the PBL thermal structure. The inhibition effect of scattering aerosols on the PBL appears to be independent of the aerosol height distribution and solely depends on its concentration. However, aerosol-PBL feedback of absorbing aerosols is highly dependent on its vertical distribution. Our analysis highlights that we should principally concentrate on controlling the emissions of scattering aerosols under the stable stratification while cooperating to control the emissions of scattering and absorbing aerosols in an unstable stratification. Moreover, the long-term inter-annual variation in PBL stability shows a strong correlation with the East Asian Winter Monsoon, which seems to be valuable in determining which pollutants to target in different monsoon years and attaining more precise air pollution control. Based on the numerical simulations and observational constraints, a concept scheme description has been concluded to deepen our recognition of the interactions between thermodynamic stability and aerosols within the PBL over the NCP region.
The NO2 camera based on Gas Correlation Spectroscopy
Authors: Kuhn Leon , Kuhn Jonas , Wagner Thomas , Platt Ulrich
Published: October 2021

Abstract. Monitoring of NO2 is in the interest of public health, because NO2 contributes to the decline of air quality in many urban regions. Its abundance can be a direct cause of asthmatic and cardiovascular diseases and plays a significant part in forming other pollutants such as ozone or particulate matter. Spectroscopic methods have proven to be reliable and of high selectivity by utilizing the characteristic spectral absorption signature of trace gasses such as NO2. However, they typically lack the spatio-temporal resolution required for real-time imaging measurements of NO2 emissions. We propose imaging measurements of NO2 in the visible spectral range using a novel instrument, an NO2 camera based on the principle of Gas Correlation Spectroscopy (GCS). For this purpose two gas cells (cuvettes) are placed in front of two camera modules. One gas cell is empty, while the other is filled with a high concentration of the target gas. The filled gas cell operates as a non-dispersive spectral filter to the incoming light, maintaining the two-dimensional imaging capability of the sensor arrays. NO2 images are generated on the basis of the signal ratio between the two images in the spectral window between 430 and 445 nm, where the NO2 absorption cross section is strongly structured. The capabilities and limits of the instrument are investigated in a numerical forward model. The predictions of this model are verified in a proof-of-concept measurement, in which the column densities in specially prepared reference cells were measured with the NO2 camera and a conventional DOAS instrument. Finally, results from measurements at a large power plant, the Großkraftwerk Mannheim (GKM), are presented. NO2 column densities of the plume emitted from a GKM chimney are quantified at a spatio-temporal resolution of 1/6 frames per second (FPS) and 0.92 m × 0.92 m. A detection limit of 1.89 · 1016 molec cm−2 was reached. An NO2 mass flux of Fm = (7.41 ± 4.23) kg h−1 was estimated on the basis of momentary wind speeds obtained from consecutive images. The camera results are verified by comparison to NO2 slant column densities obtained from elevation scans with a MAX-DOAS instrument. The instrument prototype is highly portable and cost-efficient at building costs of below 2,000 Euro.
TimeSpec4LULC: A Global Deep Learning-driven Dataset of MODIS Terra-Aqua Multi-Spectral Time Series for LULC Mapping and Change Detection
Authors: Khaldi Rohaifa , Alcaraz-Segura Domingo , Guirado Emilio , Benhammou Yassir , El Afia Abdellatif , Herrera Francisco , Tabik Siham
Published: October 2021

Abstract. Land Use and Land Cover (LULCs) mapping and change detection are of paramount importance to understand the distribution and effectively monitor the dynamics of the Earth’s system. An unexplored way to create global LULC maps is by building good quality LULC-models based on state-of-the-art deep learning networks. Building such models requires large global good quality time series LULC datasets, which are not available yet. This paper presents TimeSpec4LULC (Khaldi et al., 2021), a smart open-source global dataset of multi-Spectral Time series for 29 LULC classes. TimeSpec4LULC was built based on the 7 spectral bands of MODIS sensor at 500 m resolution from 2002 to 2021, and was annotated using a spatial agreement across the 15 global LULC products available in Google Earth Engine. The 19-year monthly time series of the seven bands were created globally by: (1) applying different spatio-temporal quality assessment ﬁlters on MODIS Terra and Aqua satellites, (2) aggregating their original 8-day temporal granularity into monthly composites, (3) merging their data into a Terra+Aqua combined time series, and (4) extracting, at the pixel level, 11.85 million time series for the 7 bands along with a set of metadata about geographic coordinates, country and departmental divisions, spatio-temporal consistency across LULC products, temporal data availability, and the global human modiﬁcation index. To assess the annotation quality of the dataset, a sample of 100 pixels, evenly distributed around the world, from each LULC class, was selected and validated by experts using very high resolution images from both Google Earth and Bing Maps imagery. This smartly, pre-processed, and annotated dataset is targeted towards scientiﬁc users interested in developing and evaluating various machine learning models, including deep learning networks, to perform global LULC mapping and change detection.
A database of Holocene nearshore marine mollusc shell geochemistry from the Northeast Pacific
Authors: Palmer Hannah M. , Padilla Vriesman Veronica , Banker Roxanne M. W. , Bean Jessica R.
Published: October 2021

Abstract. The shells of marine invertebrates can serve as high-resolution records of oceanographic and atmospheric change through time. In particular, oxygen and carbon isotope analyses of nearshore marine calcifiers that grow by accretion over their lifespans provide seasonal records of environmental and oceanographic conditions. Archaeological shell middens generated by Indigenous communities along the Northeast Pacific coast contain shells harvested over multiple seasons for millennia. These shell middens, as well as analyses of archival and modern shells, have the potential to provide multi-site, seasonal archives of nearshore conditions throughout the Holocene. A significant volume of oxygen and carbon isotope data from archaeological shells exists, yet is separately published in archaeological, geochemical, and paleoceanographic journals and has not been comprehensively analyzed to examine oceanographic change over time. Here, we compiled a database of previously published oxygen and carbon isotope data from archaeological, archival, and modern marine molluscs from the North American coast of the Northeast Pacific (32° N to 50° N). This database includes oxygen and carbon isotope data from over 550 modern, archaeological, and sub-fossil shells from 8880 years before present (BP) to the present, from which there are 4,845 total δ13C and 5,071 total δ18O measurements. Shell dating and sampling strategies vary among studies (1–118 samples per shell) and vary significantly by journal discipline. Data are from various bivalves and gastropod species, with Mytilus spp. being the most commonly analyzed taxon. This novel database can be used to investigate changes in nearshore sea surface conditions including warm-cool oscillations, heat waves, and upwelling intensity, and provides nearshore calcite δ13C and δ18O values that can be compared to the vast collections of offshore foraminifera calcite δ13C and δ18O data from marine sediment cores. By utilizing previously published geochemical data from midden and museum shells rather than sampling new specimens, future scientific research can reduce or omit the alteration or destruction of culturally valued specimens and sites. The data set is publicly available through PANGAEA at https://doi.org/10.1594/PANGAEA.932671 (Palmer et al., 2021).
Late to post-Variscan basement segmentation and differential exhumation along the SW Bohemian Massif, central Europe
Authors: Eberts Andreas , Fazlikhani Hamed , Bauer Wolfgang , Stollhofen Harald , de Wall Helga , Gabriel Gerald
Published: October 2021

Abstract. The exposed Variscan basement in central Europe is
well-known for its complex structural and lithological architecture
resulting from multiple deformation phases. We studied the southwestern
margin of the Bohemian Massif, which is characterized by major and
long-lived shear zones, such as the Pfahl and Danube shear zones, extending
over > 100 km and initiated during Variscan tectonics. We
integrated Bouguer gravity anomaly and lidar topographic data analyses and
combined our results with available data and observations from
low-temperature thermochronology, metamorphic grades, and the exposed
granite inventory to detect patterns of basement block segmentation and
differential exhumation. Three NW–SE-striking basement blocks are bordered
by the Runding, Pfahl, and Danube shear zones from the northeast to the
southwest. Basement block boundaries are indicated by abrupt changes in
measured gravity patterns and metamorphic grades. By applying high-pass
filters to gravity data in combination with lineament analysis, we
identified a new NNW–SSE-striking tectonic structure (Cham Fault), which
further segments known basement blocks. Basement blocks that are segmented
by the Cham Fault differ in the abundance and spatial distribution of
exposed late Variscan granites and are further characterized by variations in apparent thermochronological age data. Based on our observations and
analyses, a differential exhumation and tectonic tilt model is proposed to
explain the juxtaposition of different crustal levels. Block segmentation
along the NW–SE-striking Pfahl and Runding shear zones most likely occurred
prior, during, and after late orogenic granite emplacement at ca. 320 ± 10 Ma, as some of the granites are cross-cut by the shear zones, while others utilized these structures during magma ascent and emplacement. In contrast,
activity and block segmentation along the Cham Fault occurred after granite
emplacement as the fault sharply truncates the granite inventory. Our study
provides evidence of intense and continuous fault activities during late
and post-orogenic times and highlights the importance of tectonic structures
in the exhumation and juxtaposition of different crustal levels and the
creation of complex lithological patterns in orogenic terrains.