bluuebunny/crossref_metadata_2025 huggingface dataset:
Resistencia a la compresión de la laja tipo Salmón procedente de San José de Gracia, Molcaxac, Puebla, México
Authors: Morales-Tassinari Adolfo Manuel , Gómez-Alonso Emanuel , Zárate-Reyes Moisés
Published: September 2020

El estudio tiene como propósito determinar la resistencia a la compresión de la laja tipo Salmón procedente de San José de Gracia, Molcaxac, Puebla, México. Para lograr esto, se desarrollaron ensayos de compresión uniaxial siguiendo el procedimiento descrito en la norma ASTM C170/C170M-16 Standard Test Method for Compressive Strength of Dimension Stone.

La empresa Mármoles Gómez cortó 24 probetas cúbicas de esta piedra con dimensión de 50±0.5 mm en cada lado. Los ensayos se realizaron en el Laboratorio de Ciencias e Investigación en Materiales (LACIIM) del Centro de Competitividad y Tecnología para la Industria del Mármol del Estado de Puebla (CECOTIMEP) perteneciente al Instituto Tecnológico Superior de Tepexi de Rodríguez (ITSTR) del Tecnológico Nacional de México (TecNM). 12 probetas fueron secadas en horno a temperatura de 60°C durante 48 horas obteniendo peso seco constante; otras 12 probetas fueron saturadas en agua destilada a temperatura ambiente durante 48 horas obteniendo peso saturado constante. Se realizaron ensayos de compresión uniaxial en: 6 probetas secas con carga paralela a la veta, 6 probetas secas con carga perpendicular a la veta, 6 probetas saturadas con carga paralela a la veta y 6 probetas saturadas con carga perpendicular a la veta. La velocidad del ensayo de compresión uniaxial fue de 0.5 MPa/s. Los resultados muestran que la laja tipo Salmón tiene una resistencia a la compresión promedio de 56.35 MPa. En conclusión, la laja tipo salmón de esta localidad es recomendada para usos como columnas para mesas, patas para sillas y pedestales para lavabos en casa-habitación.
Solución numérica del flujo transitorio en tanques cilíndricos horizontales producido por la inyección de aire con tres toberas
Authors: Lizardi-Ramos Arturo , Terres-Peña Hilario , López-Callejas Raymundo , Vaca-Mier Mabel , Chávez-Sánchez Sandra
Published: September 2020

Se presenta el análisis numérico transitorio del flujo generado por la inyección de aire en un cilindro horizontal que contiene agua y que su parte superior está abierta a la atmósfera. El aire es introducido al depósito por medio de tres toberas y frente a ellas se colocan dos tipos de deflector; con sección transversal circular y triangular. El modelo matemático contempla las ecuaciones de Reynolds-Navier-Stokes en coordenadas cilíndricas para un fluido newtoniano, viscoso, en dos fases, en régimen turbulento y en estado transitorio; y se resuelve con el método numérico del elemento finito. Los resultados muestran los campos de velocidad transitorios en la sección transversal del recipiente que coincide con el centro de las toberas que inyectan el aire al contenedor. También se analiza el comportamiento de la velocidad azimutal a lo largo del diámetro del cilindro para diferentes tiempos y para la posición axial antes mencionada. Al comparar el campo de velocidades en estado permanente del sistema con deflectores triangulares contra el circular se encontró que: a) el valor del vector velocidad en la parte superior izquierda del tanque disminuyó 3.20%; b) el valor máximo positivo promedio de la velocidad azimutal a lo largo del diámetro del depósito disminuyó 3.71%.
Modelado para la determinación del poder calorífico de la gasificación de la balsa en instalaciones downdraft mediante redes neuronales artificiales
Authors: Ibarra Sánchez Eddy Bladimir , Oñate Chiliquinga Álvaro Luis , Villavicencio Poveda Ángelo Homero
Published: September 2020

En este trabajo se presentan los principales resultados investigativos obtenidos por los autores en el modelado para la predicción del poder calorífico del gas de síntesis obtenido en instalaciones de gasificación termoquímica downdraft de la madera de balsa, con la incorporación de técnicas basadas en redes neuronales artificiales. Se realizó un análisis del estudio del estado del arte de trabajos de investigación previos vinculados al modelado matemático de estas instalaciones por las diferentes técnicas reflejada en la literatura especializada. El modelado se lleva a cabo mediante una planificación experimental 3n, con lo que se obtuvo los datos experimentales a los cuales se aplican técnicas de predicción mediante redes neuronales con ayuda de Matlab con resultados satisfactorios. La selección de variables para realizar la experimentación toma en cuenta la ubicación geográfica de donde se obtiene el residuo forestal de la balsa, ya que esta se produce en un clima tropical cálido-húmedo. Por literatura se conoce que uno de los factores que influye notablemente en el poder calorífico es la humedad. Obviamente la cantidad oxígeno contenida en el aire en el proceso es regulada por una válvula de admisión, además de que es un factor preponderante la masa añadida al proceso. Teniendo en cuenta esto, la red neuronal artificial obtenida permite la predicción del poder calorífico resultante de la gasificación de la balsa con un error de ± 2.6 MJ/g y un ajuste del 86%, lo cual permite realizar una predicción adecuada.
The influence of MK-801, glutamate and glycine via the modulation of N-methyl-D-aspartate receptors on isolated rat heart
Authors: Govorushkina N. S. , Bolevich S. B. , Jakovlevich V. , Tachieva B. I. , Bolevich S. S. , Orlova A. S. , Fokina M. A. , Saltykov A. B. , Morozova E. M. , Samburova N. V. , Vukolova M. N. , Tezikov E. B.
Published: September 2020

N-methyl-D-aspartate (NMDA) receptors belong to the group of inotropic glutamate receptors, which are found in rat cardiomyocytes.

Aim. To evaluate the influence of a non-competitive antagonist of NMDA-receptors — МК-801, separately or in combination with glutamate and/or glycine, on cardiodynamic parameters, coronary flow and oxidative stress biomarkers in isolated rat heart.

Materials and methods. 40 Wistar albino rats were divided into 4 groups (10 rats per group). Aorta of isolated rat heart was cannulated and perfused retrogradely by Krebs-Henseleit buffer in the Langendorf mode. Group 1 received МК-801 (50 µmol/l), group 2 received МК-801 and glycine (100 µmol/l), group 3 received МК-801 and glutamate (100 µmol/l) and group 4 received МК-801, glutamate and glycine. Parameters of cardiac dynamics and coronary blood flow were registered during the last minute of tested substance infusion (E) and at the point when artery perfusate samples were taken at the end of the control period (C). The difference between two points (C and E) was calculated and expressed in percent with a standard deviation.

Results. Group 1 demonstrated the most prominent decrease of peak left ventricle (LV) pressure increase velocity (–47.59 ± 5.65)%, systolic and diastolic LV pressure: (–45.18 ± 4.87)% and (–37.24 ± 5.15)%, respectively and cardiac rate: (–28.63 ± 3.00)%. The most significant decrease of minimal LV pressure increase velocity was observed in group 2: (–47.43 ± 5.68)%, decrease of coronary blood flow — in group 3: (–23.02 ± 2.49)%. The most significant decline of oxidative stress biomarkers — nitrite and hydrogen peroxide — was observed in group 3: (–29.24 ± 2,70)% and (–23.43 ± 3.15)%, respectively; of superoxide anion radical (O2–) — in group 2: (–55.72 ± 6.90)%, of lipid peroxidation index — in group 1: (–35.77 ± 4.49)%.

Conclusion. Administration of МК-801 results in a statistically significant decrease of cardiac dynamic parameters and lipid peroxidation index, compared to MK-801 in combination with glutamate and/or glycine.
Liver fibrosis assessment by transient elastography in patients with liver cirrhosis after hepatitis C virus eradication
Authors: Nabatchikova E. A. , Abdurakhmanov D. T. , Nikulkina E. N. , Rozina T. P. , Tanaschuk E. L. , Moiseev S. V.
Published: September 2020

Direct-acting antivirals (DAAs) therapy is associated with fibrosis regression in patients with hepatitis C virus liver cirrhosis.

Aim. To study the dynamic of liver fibrosis in cirrhotic patients with a DAAs-induced sustained virological response (SVR).

Materials and methods. The retrospective cohort study included 80 cirrhotic patients (male — 43%, median age 54 years). Liver stiffness (LS) was measured by transient elastography before treatment and after SVR. Patients with LS improvement ≥30% were included in group 1, other patients — in group 2. Clinical, laboratory and instrumental parameters were assessed. Independent risk factors for the absence of LS improvement ≥30% were determined by binary logistic regression with the definition of odds ration (OR) and 95% confidence interval (CI).

Results. LS reduced from 21.35 (15.2; 27.7) to 13.5 [10.1; 20.0] kPa (p < 0.001), the median reduction was 5.1 [2.6; 11.0] kPa. Regression of fibrosis from F4 to F2 and F3 stages was observed in 16 (20%) and 19 (24%) of cases, respectively. Overall, 36 patients were included in group 1, 44 patients — in group 2. Platelet counts increased in group 1 compared to group 2 by 24.5% vs 5.2% (p = 0.014), a disappearance or reducing the size of esophageal varices were observed in 72% vs. 35% of cases (p = 0.035). Significant differences in ALT, AST, albumin, prothrombin time dynamics were not observed. Baseline albumin level ≤35 g/l is an independent risk factor for the absence of significant improvement of LS: OR 6.7 (95% CI 1.7–25.9, p = 0.006).

Conclusion. SVR leads to fibrosis regression to F2-F3 stages in 44% of patients. Baseline albumin level ≤35 g/l is an independent risk factor for the absence of significant improvement of LS.
Study of the effect of the concentration of sodium carboxymethylcellulose on hemostatic and antiadhesive activity during liver operations in an experiment
Authors: Soldatova D. S. , Bezhin A. I. , Kudryavtseva T. N.
Published: September 2020

Liver surgeries are associated with the risk of bleeding and the development of adhesive disease. Sodium carboxymethylcellulose (Na-CMC) forms an elastic swelling gel and a “lattice” that holds the blood cells.

The aim: determine the concentration of Na-CMC, which has the maximum hemostatic and anti-adhesive effect, during liver surgeries in the experiment.

Materials and methods. The coagulating effect of Na-CMC (from 0.5% to 9%) was studied in vitro. In vivo experiment on 167 male Wistar rats weighing 185–250 g studied the bleeding time and the amount of blood loss, anti-adhesive activity in the model of liver surgery by cutting off the edge of the organ in the standard way: the depth and width of the wound is 1 cm; the height is 3 mm.

Results. In vitro the minimum coagulating effect was obtained in 3% of Na-CMC. In vivo the maximum effect on reducing the bleeding time (–46% compared to the control, p < 0.01) and the amount of blood loss (–27% compared to the control, p < 0.01) had 6% Na-CMC. Then, according to the degree of decrease in the bleeding time, there were: 5% Na-CMC (–40%), 4% Na-CMC (–37%), 3% Na-CMC (–29%), 7% Na-CMC (–27%), 8% Na-CMC (–11%). For the amount of blood loss, a similar pattern of decreasing effect was observed: 5% Na-CMC (–21%), 4% Na-CMC (–14%), 7% Na-CMC (–12%), 3% Na-CMC (–11%), 8% Na-CMC (–5%). When comparing all the studied concentrations of Na-CMC gel with the control group in terms of bleeding time and blood loss, the differences are statistically significant: p < 0.01. Maximum anti-adhesive activity was observed for 6% Na-CMC on days 7 and 14 after surgery: the adhesive process was estimated at 0.497 [0.000–0.497] and 0.962 [0.000–1.301] points vs. 2.457 [2.118–2.457] and 4.071 [3.758–4.602] points in the control group (p < 0.01).

Conclusion. The maximum hemostatic and anti-adhesive effect has 6% Na-CMC.
Bioresorbable collagen materials in surgery: 50 years of success
Authors: Fayzullin A. L. , Shekhter A. B. , Istranov L. P. , Istranova E. V. , Rudenko T. G. , Guller A. E. , Aboyants R. K. , Timashev P. S. , Butnaru D. V.
Published: September 2020

Collagen materials are widely applied in medicine due to optimal handling characteristics, biocompatibility, controlled biodegradation, the ability to form complexes with drugs and facilitate regeneration. Researchers from Sechenov University developed, studied in experiments and introduced into medicine a variety of materials based on collagen — a protein of connective tissue. At the same time, new collagen materials were launched into clinical practice abroad. In this review of Russian and world literature, we described how scientific and applied studies of collagen materials developed over time and tried to illustrate the current state and trends of collagen application for a variety of medical purposes — from hemostatic sponges to tissue-engineered constructs. The range of available collagen-based medical products and the emergence of new collagen materials indicate the keen interest in this biomaterial from the medical community and the potential of future discoveries.
Can Institutional Ownership Moderate The Influence of Deferred Taxes and Tax Planning on Earnings Management? Evidence from Indonesia
Authors: Wibowo Raden Arief
Published: September 2020

This research aims to examine the effect of deferred tax expense, tax planning, managerial ownership on earnings management which is moderated by institutional ownership in manufacturing companies in the indonesia stock exchange in 2015-2018. The research sample was 16 companies. The sampling technique in the research used the purposive sampling method. This research uses multiple linear regression analysis and Moderated Regression Analysis (MRA) with the help of the IBM SPSS 24 program. The results of this study indicate that simultaneously the variables of defererred tax expense, tax planning, managerial ownership affect earnings management. Whereas partially deffered tax expense affect earnings management, tax planning and managerial ownership do not affect earnings management. Institusional ownership is able to influence (weaken) the relationship between deffered tax expense on earnings management, institusional ownership is able to influence (strengthen) the relationship between managerial ownership on earnings management, but institusional ownership is not able to influence the relationship between tax planning on earnings management
PENGARUH PEER GRUP EDUCATION TERHADAP TINGKAT PENGETAHUAN TENTANG PENANGANAN PREMENSTRUAL SYNDROME PADA REMAJA PUTRI KELAS VII SMP NEGERI 2 MOJOANYAR MOJOKERTO
Authors: Khusniyati Etik , Purwati Heni , Purwati Purwati
Published: September 2020

An adolescent’s knowledge about premenstrual syndrome handling is still in the minor level since parents have no intention to talk openly and it tends to be a taboo. A peer group education method can be used to give information on adolescent girl about premenstrual syndrome handling in which it can be taught more openly. This study aims at investigating the influence of peer group education toward level of premenstrual syndrome handling’s knowledge of adolescent girl. This study used pre-experimental design with One-Group Pre-Post Test Design. The number of population were 81 adolescent girls from VII grade in which taken by using probability sampling (cluster sampling). The number of sample it self were 66 respondents. The independent variable was peer group education and the dependent variable was level of adolescent premenstrual syndrome handling’s knowledge. The data were collected by using questioner which was used before and after peer group education. The data were processed after gaining the whole data collection and the statisticalWilcoxon sign test were used afterward. The findings revealed that the value of asymp.sig (2 tailed) was 0,000 and α was 0, 05. The value of asymp.sig (2-tailed) <α 0,05, it means that H1 was accepted in which there were influence of peer group education toward level of adolescent premenstrual syndrome handling’s knowledge in VII grade of state SMP 2 Mojoanyar Mojokerto. A peer group education method stimulated both peer educator and peer group to discuss and share information each other about the problems of premenstrual syndrome handling openly in order to increase their knowledge.
Perempuan-Perempuan ‘Pembawa Pesan’ dalam Layar Kaca
Authors: Muthmainnah Yulianti
Published: September 2020

Dua puluhan tahun lalu, media yang bisa mendekatkan jarak yang jauh serta bisa diakses dengan mudah, hanya butuh beberapa menit saja dengan cara mengirimkan tulisan adalah email. Kini, di tahun 2018, email bahkan bisa mengirimkan gambar, suara, dan video bergerak. Selain itu, ada facebook, dropbox, skipe, instagram, twitter dan lain sebagainya. Media-media sosial di atas berkembang sangat cepat. Informasi baik yang benar ataupun tidak (hoax) dari belbagai manca negara dengan mudah bisa tersebar hingga ke pelosok negeri. Sekalipun perkembangan tehnologi dan akses pada media demikian luas, gambar layar kaca maupun layar lebar tetap memiliki tempat tersendiri.

Industri film tetap hidup, pun film-film yang berdurasi panjang, bersambung hingga beberapa episode nyaris selalu ditunggu penonton. Ada kenikmatan tersendiri ketika menonton film, apalagi bila film bisa diakses dalam genggaman tangan. Film-film tersebut bisa dinikmati sambil berdiri di atas bis atau kereta dengan mudah melalui aplikasi iflix. Lantas, bagaimana film-film tersebut mencitrakan perempuan? Artikel ini mengkaji bagaimana film menjadi medium komunikasi, bukan saja sekadar hiburan, tetapi juga sebagai media yang mampu memberikan pencerahan dan pendidikan. Juga berperan sebagai alat propaganda atas sebuah tujuan, yang pada akhirnya disadari atau tidak akan membawa pengaruh yang kuat terhadap pola pikir suatu masyarakat.
Populisme Islam dan Tantangan Demokrasi Islam di Indonesia
Authors: Shofan Moh
Published: September 2020

Artikel-artikel dalam jurnal ini mencoba untuk melihat fenomena terbaru dalam politik Indonesia yang terkait dengan mobilisasi dengan menggunakan identitas Islam yang sering dikaitkan dengan populisme. Sebagian akademisi lain, populisme dipandang sebagai pertanda yang baik karena dapat menjadi pengingat atau alarm bagi elite yang sedang berkuasa agar selalu memperhatikan kepentingan publik dalam setiap pembuatan kebijakan. Sebaliknya, populisme oleh akademisi lainnya dinilai tidak lebih sebagai suatu retorika elite untuk meraih dukungan massa yang melimpah pada momen politik elektoral tertentu. Dan di sebagian kalangan lainnya, populisme Islam dikhawatirkan dapat menghalangi perkembangan demokrasi di Indonesia yang sejatinya masih dalam proses transisi menuju konsolidasi demokrasi.
Muhammadiyah dan Pengelolaan Zakat: Antara Keikhlasan dan Profesionalisme
Authors: Al-Hasanah Erni Juliana
Published: September 2020

Akuntabilitas pelaporan keuangan LAZISMU menghadapi tantangan secara internal. Budaya organisasi yang berkembang di Muhammadiyah secara umum, seperti pola-pola kerja aktivisme yang cenderung mengabaikan keteraturan, budaya ewuh-pakewuh, dan rasa keikhlasan serta rasa saling percaya yang berlebihan menimbulkan efek samping berupa rasa enggan saat harus menuntut laporan keuangan dan tidak nyaman terhadap proses evaluasi (audit). Tulisan ini ingin menjelaskan bahwa upaya memadukan keikhlasan dan profesionalisme dalam praktik akuntabilitas pelaporan keuangan merupakan budaya baru yang masih terus berproses dalam membangun citra keseluruhan Muhammadiyah sebagai organisasi modern yang akuntabel.
PENGARUH PEMANFAATAN INTERNET DAN MOTIVASI BELAJAR TERHADAP HASIL BELAJAR SISWA KELAS VII DI SMP NEGERI 1 KAPONGAN
Authors: Putra Rizka Mahendra
Published: September 2020

Selama ini siswa SMK merasa fobia dan tidak bersemangat dalam belajar matematika. Padahalhampir seluruh mata pelajaran membutuhkan matematika dalam penyelesaiannya. Dalam upayameningkatkan hasil belajar matematika siswa, maka perlu diupayakan suatu pembelajaran yangdapat mengaitkan isi materi matematika dengan permasalahan sehari-hari. Oleh karena itu diadakanpenelitian tindakan kelas yang menerapkan model pembelajaran yang berorientasi pada VocationalSkill dengan pendekatan kontekstual di kelas XII Perbankan SMKN 1 Panji Situbondo. Analisisdata menggunakan model Miles-Huberman, yaitu tahap reduksi data, penyajian data, penarikankesimpulan atau verifikasi data. Dalam penelitian ini, materi anuitas yang diajarkan dirancangsedemikian rupa sehingga terlihat dengan jelas keterkaitannya dengan masalah kejuruan siswa(Perbankan). Hasil penelitian menunjukkan bahwa pembelajaran anuitas yang berorientasi padaVocational Skill dengan pendekatan kontekstual dapat meningkatkan hasil belajar, aktivitas, danpemahaman siswa tentang materi yang disampaikan.
DAMPAK PEMBERLAKUAN SISTEM ZONASI TERHADAP MUTU SEKOLAH DAN PESERTA DIDIK
Authors: Widyastuti Riski Tri
Published: September 2020

Education is a conscious and planned effort to shape civilized people. Education is very important for a nation that national development can work well and corresponding maximum Pancasila and the 1945 Constitution. In education there is a system called Education is a conscious and planned effort to shape civilized people. Education is very important for a nation so that national development can run well and maximally in accordance with Pancasila and the 1945 Constitution. In education there is a system called the education system. Today education in Indonesia uses a zoning system in the acceptance of new students, the zoning system is implemented with the hope that the realization of educational equality in various regions. During this time what happened in Indonesia is the emergence of the title of 'favorite school' in schools that are considered to have high achievements so that this 'favorite school' usually becomes the target of parents and students so concentration occurs. This causes schools that are considered not favorite to be short of students, besides that, the differences between favorite and non-favorite schools cause intolerant attitudes among students which are not in accordance with the values of Pancasila. Zoning itself is the acceptance of new students by looking at the closest distance from school to home with a minimum quota of 90% of the total prospective students received. The impact of this zoning varies both positive and negative both on the quality of the school and on students themselves..
PENGARUH GAYA DAN MOTIVASI BELAJAR TERHADAP KEMAMPUAN PENALARAN MATEMATIS
Authors: Sumartiningsih Deviana , Sari Lisma Dian K.
Published: September 2020

Dalam proses belajar mengajar, salah satu kunci keberhasilan siswa adalah menggunakan gaya belajar yang sesuai agar mampumenyerap, mengatur, dan mengolah informasi yang diterima. Faktor lainnya adalah motivasi belajar sebagai pendorong siswa untuk meraih sebuah prestasi. Penelitian ini bertujuan untuk mengetahui apakah ada pengaruh gaya belajar dan motivasi belajar terhadap kemampuan penalaran matematis siswa pada mata pelajaran matematika. Penelitian kuantitatif ini dilakukan dengan jumlah sampel sebanyak 100 siswa menggunakan teknik Simple Random Sampling. Metode pengumpulan data menggunakan angket dan tes.Teknik analisis data yang digunakan adalah analisis regresi berganda, dan untuk uji hipotesis menggunakan korelasi ganda. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan antara gaya belajar dan motivasi belajar terhadap kemampuan penalaran matematis siswa. Diperoleh persamaan regresi dengan kontribusi sumbangan efektifitas garis regresi sebesar 6,67%. Dari hasil uji F dan korelasi ganda diperoleh Fhitung sebesar 3,4661 dan Rhitung sebesar 0,2584. Diperoleh Freg lebih besar dari Ftab ini menunjukkan bahwa hipotesis diterima.
PENGARUH TINGKAT PENGETAHUAN KEWIRAUSAHAAN TERHADAP MINAT MENJADI ENTREPRENEUR PADA MAHASISWA (Studi kasus mahasiswa UBSI cabang Salemba 22 Jakarta)
Authors: Astuti Fajar Diah , Sartika Rawit , Suratriadi Panji
Published: September 2020

Badan Pusat Statistik mengumumkan bahwa angka pengangguran sampai dengan Agustus 2019 menjadi 7,05 juta orang. Pengganggruan untuk generasi muda dengan latar pendidikan perguruan tinggi untuk diploma dari tahun 2017-2019 naik 8,5%, untuk lulusan universitas atau sarjana dari tahun 2017-2019 naik menjadi 25%. Keadaan ini harus menjadi perhatiaan bagi mahasiswa untuk menciptakan lapangan pekerjaan dengan cara menjadi pengusaha (entrepreneur). Metode penelitian yang digunakan metode kuantitatif dengan melakukan survey dan wawancara, serta pengolahan datanya menggunakan SPSS 19. Hasil pengolahan data didapat nilai koefisien korelasi/ hubungan (R) = 0,949, dan koefisien determiniasi (R²) sebesar R²=0,901, dapat dikatakan tingkat pengetahuan kewirausahaan 90,1% sangat kuat mempengaruhi minat mahasiswa menjadi entrepreneur, sisanya 9,9% dipengaruhi oleh faktor lain. Dan hasil persamaan regresi sederhananya adalah Y = 0,517 + 0,486X, artinya setiap penambahan 1 (satu) usaha akan menambah besar minat mahasiswa menjadi etrepreneur sebesar 0,486. Dapat dikatakan bahwa minat mahasiswa untuk menjadi entrepreneur sangat kuat dipengaruhi oleh tingkat pengetahuan kewirausahaan. Kata kunci: pengetahuan kewirausahaan, minat menjadi enterpreneur
FACTORS INFLUENCING DIVIDEND PAYOUT DECISION OF FINANCIAL AND NON-FINANCIAL COMPANIES LISTED ON NAIROBI SECURITIES EXCHANGE
Authors: Gakumo Samuel Thuo , Nanjala Dr. C.
Published: September 2020

Purpose: The purpose of this study was to examine the factors influencing dividend payout decision of financial and non-financial companies listed on Nairobi securities exchange.Methodology: The study conducted a census on 33 financial and non-financial firms listed on the NSE consistently since 2003 to 2012.Panel data was analyzed using random effects Tobit and random affects probit models. The findings indicated that four variables; financial leverage, business risk, profitability and Earnings per share significantly influenced the amount of dividend paid.Results: The findings indicated that four variables; financial leverage, business risk, profitability and Earnings per share significantly influenced the amount of dividend paid. Based on the findings, the study concluded that EPS, financial leverage and business risk play a key role in making the decision to pay or not to pay dividends. Earnings per share influences the decision to pay positively while both financial leverage and business risk influences the decision to pay dividends negatively.Unique contribution to theory, practice and policy: The study also recommends that managers may use the study findings when making the dividend payout policies since they will be given useful information regarding which factors they may consider when determining the dividend payouts
El antagonismo obediencia/resistencia en las prácticas artístico políticas: la estrategia de la sugerencia
Authors: Tortosa Ibañez Laura
Published: September 2020

Con el siguiente texto pretendemos analizan, dentro del extenso campo de las prácticas artístico políticas de las últimas décadas, los lenguajes y procesos artísticos que ofrecen una imagen crítica de la sociedad. La elección de los artistas de enfrentarse al antagonismo obediencia/resistencia reside en visualizar públicamente los flujos de resistencia en la sociedad.

Este estudio pretende analizar dos enfoques diferentes, hacia el uso que los artistas hacen de las estrategias de la resistencia. Nos proponemos evidenciar estas estrategias a través del análisis de obras de diferentes artistas contemporáneos. El primer enfoque que vamos a desarrollar, se centra en el uso de estrategias más directas, es decir cercanas a prácticas activistas. El segundo enfoque, centra su atención en obras que se aproximan a estrategias de lo sensible, lo sugerido e inherente.

Una comparación de estrategias que verán su eficacia hacia la recepción de los públicos.
“Tem o político e tem nós”: as concepções políticas de mulheres negras ativistas populares do Morro da Polícia/ Porto Alegre
Authors: Alves Thais Da Rosa
Published: September 2020

Este artigo apresenta as concepções sobre a política a partir das percepções de uma ativista comunitária integrante de uma associação de mulheres negras localizada na periferia de Porto Alegre. Com o objetivo de analisar estas concepções desde a perspectiva desenvolvida pela antropologia da política, apresentou-se um recorte a partir de entrevistas e conversas com Rosa, a presidenta da associação, que ocorreram durante a realização de um trabalho de campo nos meses de julho a setembro de 2017. Ao acompanhar suas narrativas, evidenciou-se as diferentes atribuições relacionadas ao tema que, consequentemente, relacionam-se com suas ações no interior da associação e com os demais agentes do universo do ativismo comunitário.
A política como conflito: a noção de antagonismo na teoria de Ernesto Laclau
Authors: Baron Letícia , Linhares Bianca De Freitas
Published: September 2020

O artigo tem por objetivo apresentar as dimensões que a noção de antagonismo possui na teoria do discurso de Ernesto Laclau e Chantal Mouffe.  Sabendo que os autores constroem um amplo aparato analítico e conceitual consubstanciado no conflito como inerente à política, o artigo visa compreender como os autores concebem a noção de antagonismo e qual a sua relevância teórica. Para  atingir  tal fim,  adota-se como metodologia a análise bibliográfica, especificamente das obras Hegemonia e  Estratégia  Socialista:  por  uma  política  democrática  radical, Novas  Reflexões sobre a Revolução de Nosso Tempo, A Razão Populista, Fundamentos Retóricos da Sociedade e de alguns comentadores. Os resultados mostram que o antagonismo se mostra pelo caráter relacional dos processos de identificação dos discursos na ordem do social e vincula-se à contingência e à precariedade do discurso hegemônico.
Ubiquidade e crise pandêmica: o que há de novo no trabalho em educação?
Authors: Lara Rafael Da Cunha
Published: September 2020

A crise pandêmica de 2020, ocasionada pela Covid-19, desencadeou uma série de mudanças às quais convencionou-se denominar de “novo normal”. A área da educação foi particularmente afetada, haja vista que foi uma das primeiras a terem suas atividades presenciais suspensas e reorganizadas para atividades remotas. Desde o início destas atividades, uma série de preocupações têm sido levantadas por entidades de classe, associações científicas e por intelectuais acerca das condições de trabalho em educação sob o novo normal instaurado pela crise pandêmica. Neste artigo, a partir de três estudos publicados sobre o trabalho docente durante a pandemia, procedemos um cotejamento entre os dados e a produção acadêmica nos estudos do trabalho, a fim de evidenciar o que há de novo no trabalho em educação e o que são continuidades de um segmento profissional que gradativamente vem sendo permeado por práticas ubíquas. Entre mudanças e permanências no trabalho em educação, propomos a mobilização do conceito de ubiquidade como categoria explicativa que permita captar as especificidades da docência nestes contextos.
Racismo estrutural: uma análise genealógica no campo da Saúde Coletiva Brasileira
Authors: Bozzano Gabriel Souza
Published: September 2020

O presente trabalho pretende abordar a questão da saúde da população Afrodescendente no Brasil a partir de uma análise genealógica da ciência biomédica e da noção de raça como operadoras de políticas públicas. Para tanto, buscamos uma narrativa do processo de formação do negro na sociedade brasileira, das dinâmicas de classe envolvidas, da noção de risco e perigo que desembocam com a formação de políticas públicas de saúde. Através de políticas públicas compensatórias para população afrodescendente, sobretudo a lei do Ministério da Saúde instituiu, em 2009, a Política Nacional de Saúde Integral da População Negra (PNSIPN), por meio da Portaria GM/MS nº 992, de 13 de maio de 2009 e dados fornecidos pelas demais fontes institucionais discutimos a atualidade e as mudanças das relações que se perpetuam entre a ciência biomédica e o racismo estrutural no campo da saúde.
Os desafios da docência em tempos de pandemia
Authors: Paludo Elias Festa
Published: September 2020

as consequências da pandemia ainda estão sendo investigadas nos mais diversos campos. Na área da educação não é diferente, com mais de dois terços dos estudantes do mundo afetados, a pandemia vem trazendo à tona as desigualdades de acesso e oportunidade aos estudos. Entretanto, é fundamental discutir a condição dos professores de ensino básico durante a quarentena, uma vez que a demanda de trabalho muda e aumenta, com a necessidade do ensino à distância. Dessa forma, com dados recentes de pesquisas, juntamente com o relato de docência, buscamos aqui apresentar e discutir de forma geral os novos desafios das e dos professores na educação básica em tempos de quarentena.
Apresentação
Authors: Giovanella Treicy
Published: September 2020

Apresentação da edição especial da Revista Em Tese dedicada aos trabalhos do I Seminário de Sociologia e Política da UFSC.
Life cycle carbon emissions and comparative evaluation of selected open source UK embodied carbon counting tools
Authors: Ekundayo Damilola , Babatunde Solomon Olusola , Ekundayo Aisha , Perera Srinath , Udeaja Chika
Published: September 2020

Life cycle carbon emissions (LCO2), made up of operational and embodied carbon, have become a major metric of building environmental performance and energy efficiency. Whilst there are now standard methods for operational carbon assessment due to its significance in LCO2, there is still less emphasis on embodied carbon counting. However, the relative contribution of embodied carbon is on the rise as buildings become increasingly energy efficient. Following the rule that only something which is measurable is manageable, it is essential that we are able to accurately count embodied carbon. This study therefore reviews the concept of LCO2 in buildings and further investigates the open source UK tools for embodied carbon counting. A comparative evaluation case study, which validates an earlier review, showed that there is no logic and consistency in the carbon figures produced by embodied carbon counting tools. This is mainly due to different system boundaries, varying underlying assumptions and methodological differences in calculation. The findings suggest that an industry-agreed data structure and common methodology is needed for embodied carbon counting. Generally, the study provides insights into the use and capabilities of the identified open source UK embodied carbon counting tools, and is relevant to the on-going debate about carbon regulation.
Suitability of fiber-optic distributed temperature sensing to reveal
mixing processes and higher-order moments at the forest-air
interface
Authors: Peltola Olli , Lapo Karl , Martinkauppi Ilkka , O'Connor Ewan , Thomas Christoph K. , Vesala Timo
Published: September 2020

Abstract. Suitability of fibre-optic distributed temperature sensing (DTS) technique to observe atmospheric mixing profiles within and above forest was quantified and these profiles were analysed. The spatially continuous observations were made at a 125 m tall mast in a boreal pine forest. Air flows near forest canopies diverge from typical boundary layer flows due to the influence of roughness elements (i.e. trees) on the flow. Ideally these complex flows should be studied with spatially continuous measurements, yet such measurements are not feasible with conventional micrometeorological measurements with e.g. sonic anemometers. Hence the suitability of DTS measurements for studying canopy flows was quantified. The DTS measurements were able to discern continuous profiles of turbulent fluctuations and mean values of air temperature along the mast providing information about mixing processes (e.g. canopy eddies, evolution of inversion layers at night) and up to third order turbulence statistics across the forest-atmosphere interface. Turbulence measurements with 3D sonic anemometers and Doppler lidar at the site were also utilised in this analysis. The continuous profiles for turbulence statistics were in line with prior studies made at wind tunnels and large eddy simulations for canopy flows. The DTS measurements contained a significant noise component which was however quantified and its effect on turbulence statistics was accounted for. Underestimation of air temperature fluctuations at high frequencies caused 20...30 % underestimation of temperature variance at typical flow conditions. Despite these limitations, the DTS measurements should prove useful also in other studies concentrating on flows near roughness elements and/or non-stationary periods, since the measurements revealed spatio-temporal patterns of the flow which were not possible to discern from single point measurements fixed in space.
Evaluating stream CO2 outgassing via Drifting and Anchored flux chambers in a controlled flume experiment
Authors: Vingiani Filippo , Durighetto Nicola , Klaus Marcus , Schelker Jakob , Labasque Thierry , Botter Gianluca
Published: September 2020

Abstract. Carbon dioxide (CO2) emissions from running waters represent a key component of the global carbon cycle. However, quantifying CO2 fluxes across air-water boundaries remains challenging due to practical difficulties in the estimation of reach-scale standardized gas exchange velocities (k600) and water equilibrium concentrations. Whereas craft-made floating chambers supplied by internal CO2 sensors represent a promising technique to estimate CO2 fluxes from rivers, the existing literature lacks of rigorous comparisons among differently designed chambers and deployment techniques. Moreover, as of now the uncertainty of k600 estimates from chamber data has not been evaluated. Here, these issues were addressed analyzing the results of a flume experiment carried out in the Summer of 2019 in the Lunzer:::Rinnen – Experimental Facility (Austria). During the experiment, 100 runs were performed using two different chamber designs (namely, a Standard Chamber and a Flexible Foil chamber with an external floating system and a flexible sealing) and two different deployment modes (drifting and anchored). The runs were performed using various combinations of discharge and channel slope, leading to variable turbulent kinetic energy dissipation rates (2 x 10−3< ε < 8 x 10−2 m2/s3). Estimates of gas exchange velocities were in line with the existing literature (4
Morphometric properties of alternate bars and water discharge: a laboratory investigation
Authors: Redolfi Marco , Welber Matilde , Carlin Mattia , Tubino Marco , Bertoldi Walter
Published: September 2020

Abstract. The formation of alternate bars in straightened river reaches represents a fundamental process of river morphodynamics
that has received great attention in the last decades. It is well-established that migrating alternate bars arise from
an autogenic instability mechanism occurring when the channel width-to-depth ratio is sufficiently large. While several
empirical and theoretical relations are
available for predicting how bar height and length depend on the key dimensionless parameters, there is a lack of direct, quantitative information about the dependence of bar properties on flow
discharge. We performed a series of experiments in a long, mobile-bed flume with fixed and straight banks at different discharges. The self-formed bed topography was surveyed, different metrics were analyzed to obtain quantitative information about bar height and shape, and results were interpreted in the light of existing theoretical models. The
analysis reveals that the shape of alternate bars highly depends on their formative discharge, with remarkable
variations in the harmonic composition and a strong decreasing trend of the skewness of the bed elevation. Similarly,
the height of alternate bars clearly decreases with the water discharge, in quantitative agreement with theoretical
predictions. However, the disappearance of bars when discharge exceeds a critical threshold is not as sharp as expected
due to the formation of so-called “diagonal bars”. This work provides basic information for modeling and interpreting
short-term morphological variations during individual flood events and long-term trajectories due to alterations of the
hydrological regime.
The human side of geoscientists: comparing geoscientists' and non-geoscientists' cognitive and affective responses to geology
Authors: Lacchia Anthea , Schuitema Geertje , McAuliffe Fergus
Published: September 2020

Abstract. Geoscientists and non-geoscientists often struggle to communicate with each
other. In this paper we aim to understand how geoscientists and
non-geoscientists perceive geological concepts and activities, that is, how
they think (cognitive responses) and feel (affective responses) about them.
To this effect, using a mixed-methods approach, we compare mental models –
people's representation of a phenomenon – of the subsurface,
mining/quarrying, and drilling, between geoscientists (n=24) and
non-geoscientists (n=38) recruited in Ireland. We identify four dominant
themes which underlie their mental models: (1) degree of knowledge and
familiarity, (2) presence of humans, (3) affective beliefs, and (4) beliefs
about perceived impact of the activities. While the mental models of the
non-geoscientists focused more on the perceived negative environmental and
economic impacts of geoscience, as well as providing evidence of lay
expertise, those of the geoscientists focused more on human interactions. We
argue that mental models of geoscientists and non-geoscientists are the
result of beliefs, including both cognitive and affective components, and
that both components need to be acknowledged for effective dialogue between
the two groups to take place.
Multipoint reconstruction of wind speeds
Authors: Behnken Christian , Wächter Matthias , Peinke Joachim
Published: September 2020

Abstract. The most intermittent behaviour of atmospheric turbulence is found for very short timescales. Based on a concatenation of conditional probability density functions (cpdf's) of nested wind speed increments, inspired by a Markov process in scale, we derive a short-time predictor for wind speed fluctuations around a non-stationary mean value and with a corresponding non-stationary variance. As a new quality this short-time predictor enables a multipoint reconstruction of wind data. The used cpdf's are (1) directly estimated from historical data from the offshore research platform FINO1 and (2) obtained from numerical solutions of a family of Fokker–Planck equations in the scale domain. The explicit forms of the Fokker–Planck equations are estimated from the given wind data. A good agreement between the statistics of the generated and measured synthetic wind speed fluctuations is found even on timescales below 1 s. This shows that our approach captures the short-time dynamics of real wind speed fluctuations very well. Our method is extended by taking the non-stationarity of the mean wind speed and its non-stationary variance into account.
Foreign Capital, Real Sector Financing and Excessive Leverage in Turkey: What Went Wrong?
Authors: Karakoç Bahadır
Published: September 2020

Recently, large swings in inflation and exchange rates revealed that non-financial sector is heavily geared and extremely vulnerable. Therefore, a study trying to identify the contributing factors is needed. Separating firms into groups, based on size and stock market trading status; changes in financing patterns are investigated via panel data methodology. The study aims at fulfilling the need for analyzing the consequences of foreign capital flow at firm level and documenting its significance in addition to assessing the efficacy of contemporary monetary policy. Economic conditions significantly facilitated lending process, strengthening corporate access to credit, and resulted in excessive borrowing both in the form of foreign and domestic currency. With such heavy burden of debt, non-financial sector has been facing both exchange rate and the liquidity risks. The more severely a firm was previously challenged by financing limitations, the more it borrowed once the limitations are relaxed, contributing to excessive debt burden of the economy in proportion to its previous financing challenges.
Consumption at the Bottom of the Pyramid: Current State of Research and Suggestions for Future Study
Authors: Campos Alyce Cardoso , Rezende Daniel Carvalho de , Prado José Willer do , Nascimento Thaísa Barcellos Pinheiro do , Marques Humberto Rodrigues , Grutzmann André
Published: September 2020

This article reviews the state of the literature on consumption at the bottom of the pyramid and summarizes the studies' suggestions for future research. This study was conducted using data from the Web of Science and Scopus databases with the help of CiteSpace and CitNetExplorer 1.0.0. This research is justified due to: (a) absence of a broad systematization of the theme; (b) contribution and encouragement of new researchers to take part in studies on the subject; and (c) indication of a broad international literature that can encourage studies on consumption at the base of the pyramid.
Os Avanços Da Ciência Do Presente Da Modernidade Industrial E A Encarnação Aristocrática Do Passado Antigo E Medieval Em Drácula, De Bram Stoker.
Authors: Fávero Vinícius
Published: September 2020

O presente artigo buscará, através de uma análise do enredo e um debate historiográfico acerca do romance Drácula (1897), de Bram Stoker, apresentar as contradições presentes na sociedade onde a obra foi publicada e como se expressam no escrito. Mais precisamente, o intuito será o de investigar como o autor se relacionava com o Romantismo e a forma com que sua obra representa o avanço da ciência durante o século XIX. Além disso, em seu contexto de publicação mais próximo, se colocando em oposição e até mesmo embate contra o passado medieval nobiliárquico que se encarna na figura do principal antagonista da trajetória apresentada pelo autor, o Conde Drácula.
DO TECIDO DA VIDA, DO PUÍDO DO VÍRUS: SOBRE CRIANÇAS, NOVELOS E LINHAS
Authors: Duboc Ana Paula
Published: September 2020

Em “Do tecido da vida, do puído do vírus: sobre crianças, novelos e linhas”, o décimo sexto artigo deste dossiê, Ana Paula Duboc (USP) opta por jogar holofotes sobre sujeitos da infância e a violência que sofrem quando roubados de seu direito de ser criança no atual cenário fascista brasileiro.
Paradoxes of Being and Becoming South Asian Single Mothers: The Enclave Economy, Patriarchy, and Migration
Authors: Banerjee Pallavi , Chacko Soulit , Piya Bhumika
Published: September 2020

Based on ethnography in a South Asian ethnic enclave and in-depth interviews with South Asian immigrant women, including single mothers working in the enclave, we explore the becoming and being of South Asian single motherhood. We specifically inquire how the becoming of single mothers affects the work–family lives of the mothers in an enclave economy. We show that the interplays of structural forces like immigration laws, racialized model-minority discourses, gendered ideologies of South Asian motherhood, and underlying patriarchy of the enclave economy create what we call “uneven paradoxes” for South Asian single mothers that further marginalize them. We further suggest that the single mothers challenge the paradoxes that mire their lives by striking up “patriarchal bargains” to find resources for themselves and their children and thus find agency within their constraining circumstances.