bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aprendiendo el cálculo diferencial e integral con GeoGebra
Authors: Colquepisco-Paucar Nilo Teodorico 
Published: April 2020

Se presenta una explicación en la mejora del aprendizaje de las derivadas e integrales haciendo uso de este programa informático, GeoGebra, en estudiantes universitarios, con el fin de ser implementado en la enseñanza superior en el área de matemáticas en la escuela de ingeniería de sistemas. Una de las problemáticas que nos enfrentamos en situación local y nacional es el insuficiente beneficio en las matemáticas superiores en los estudiantes. Esta problemática la probable causalidad es la restricción del uso de los recursos didácticos, el uso exorbitante de la pizarra, limitados recursos bibliográficos a capacidad, una metodología tradicional donde los estudiantes son un ente pasivo y receptivos de los temas, la no inserción de las novedades tecnológicas en el aula de clase son unas de las posibles motivo que producirían como efecto el diminuto del rendimiento de las matemáticas en los estudiantes. Por ello es importante el programa GeoGebra que facilita el aprendizaje, así resolviendo más ejercicios y con mucha motivación aprenden el cálculo diferencial e integral. Este trabajo tiene aplicación en temas de derivadas e integrales, las mismas que son mejoradas año tras año y evidencia la trascendencia de tal aplicación. El estudio se enmarcó dentro del enfoque cuantitativo, método hipotético deductivo, tipo aplicada, de diseño experimental- cuasi experimental, técnica la evaluación, así mismo la muestra seleccionada para realizar esta investigación la conformaron 60 alumnos en cada grupo del II ciclo de la carrera de Ingeniería de Sistemas. El software GeoGebra mejora el aprendizaje del cálculo diferencial e integral.
Three-dimensional numerical study of thermal exchanges in different geometry sections of mini-channels using three different nanoparticles
Authors: Chadi Kamel , Belghar Nourredine , Guerira Belhi , Messaoudi Aissam 
Published: April 2020

In the present work, we have studied the thermal exchanges of different geometry sections of mini-channels of a cooler numerically. Particularly, we have chosen a mini channels cooler copper for cooling an electronic chip IGBT. In our simulation of three-dimensional (3D), we have compared the numerical results for the different forms of the proposed mini-channels and the three different types of nano-fluids by using the Cu-water, the Ag-water, and the Diamond-water with a volume fraction of 0.02%. The numerical results are obtained by choosing a Reynolds number (Re) between 100 and 900 and considering that the flow regime is stationary.
The simulation was performed using commercial software, ANSYS-Fluent 15.0. The results obtained show that the increase of the exchange surface between the walls of the mini channels and the cooling fluid makes increases the heat exchange coefficient and the improvement of the maximum junction temperature of the electronic chip IGBT with the increase of the Reynolds number.
The choice of nanoparticles has considerable effects on improving the heat transfer and the maximum junction temperature of the chip IGBT.
Influence of types of nanoparticles, nanoparticles volume concentration and types of cooler metals on the heat transfer in a mini-channel cooler
Authors: Chadi Kamel , Belghar Nourredine , Guerira Belhi , Driss Zied 
Published: April 2020

In the present work, we have studied the effect of three different types of nanoparticles, nanoparticles volume concentration and types of cooler metals on heat transfer in a mini channel cooler numerically. In these simulations, we have considered the Cu-H2O, the Ag-H2O and the Diamond-H2O with different volume fractions in the range of 0,02%-0,1% and for two types of cooler materials for cooling an electronic component. In these conditions, the inlet velocity is constant for the three different types of nano-fluids. The power of the electronic component is equal to 130 W. The numerical results are developed for a Reynolds number equal to 1414 and a steady-state.
The simulation was performed using commercial software, ANSYS-Fluent 15.0. The obtained results show that the average heat transfer coefficient increases with the increase of the volume fraction of the nanoparticles (Cu, Ag, Diamond) and with the decrease of the temperature of the electronic component. In these conditions, the average heat transfer coefficient is the highest for the H2O–diamond nanofluid compared with the other nanofluids the Cu-H2O and the Ag-H2O. Furthermore, the types of cooler metals have considerable effects on the amelioration of the temperature of the electronic components.
HUBUNGAN PENGAWASAN DENGAN EFEKTIVITAS KERJA PEGAWAI
Authors: Sugandi Ugan , Hernawan Denny , Ratnamulyani Ike A 
Published: April 2020

The research method was associative. The data collection techniques used was literature and field studies. The study population amounted to 47 respondents. The sampling technique used was simple random sampling. Determination of the sample used Yamane formula so the result sampling was 32 respondents. To determine the degree of correlation was used Pearson Product Moment Correlation. The results of research recapitulation variable supervision showed the average score of 3.2 which categorized medium and the recapitulation teacher performance variables obtained an average score 4.45 which categorized very good, the product moment correlation significance test for n = 32 , standard error of 5%, then the value of rtable=0.349. then rcount 0.195 the count was less than rtable=0.349, so 0.195 was a significant correlation coefficient. The research conclusion showed that the influence of principal supervising toward teacher performance by 19.5% and the remaining 80.5% was determined other factors, such as the assessment of teachers by students, delivery of teaching material according to the students opinion, incentives, teacher certification. Key word: Supervision, Performance, Teacher.
KUALITAS PELAYANAN KARTU TANDA PENDUDUK ELEKTRONIK DI KECAMATAN CISARUA KABUPATEN BOGOR
Authors: Septiany Siti Rahayu , Maksudi Beddy Iriawan , Purnamasari Irma 
Published: April 2020

Various community responses tend to suggest that different types of public services suffered a setback which is mainly marked by numerous irregularities in the public service. Systems and procedures are complicated, and human resources were slow in providing the service, expensive, closed, and discriminatory and cultured not serve, but served also an aspect of public service spotlight, especially in terms of population administration one of them in the service of making electronic ID card.The research objective is to know the quality of the electronic ID card service in District Cisarua, Bogor regency.The theory that used to analyze the quality of service is a theory proposed by Parasuraman in Harbani Pasolong (2013) which has five dimensions of service quality to be able to successfully include the dimensions of tangible, reliability, responsiveness, assurance, empathy. The five dimensions above should be implemented fully for one another have relevance.This research used descriptive quantitative method by using questionnaires as the main instrument to data collect.These results indicate that the quality of the electronic ID card service in District Cisarua, Bogor regency according to respondents of employees included in the criteria for the interpretation of Good, while according to the respondents community service quality Electronic Identity Card in District Cisarua, Bogor regency included in the criteria Pretty Good. It is explained that the completion of this electronic ID card service can’t be resolved quickly due to the completion of this electronic ID cards involve other agencies, namely the Department of Population and Civil Registration in Bogor district is not authorized for card printing and database processing. Suggestions from this study recommend that the government give them the authority to process the district population database that can handle an error in the electronic ID card identity. Then the district should continue to strive to conduct socialization to the village office of each region, with emphasis to the village to mobilize RW and RT convey any information which would have informed to the public; Keywords: Service Quality of electronic ID cards
Penggantian Tepung Ikan Dengan Tepung Ikan Asin Bawah Standar Dalam Formulasi Pakan Ikan Nila (Oreochromis niloticus)
Authors: Nurhasanah Heni , Rosmawati Rosmawati , Kurniasih Titin 
Published: April 2020

Tujuan dari penelitian ini ialah untuk mengetahui level inklusi optimal tepung ikan asin bawah standar dalam formulasi pakan ikan Nila sebagai pengganti tepung ikan. Perlakuan terdiri atas penggunaan tepung ikan asin bawah standar dengan dosis 0%, 4%, 8%, 13%, dan 17%. Laju pertumbuhan spesifik, efisiensi pakan, konsumsi pakan, tingkat kelangsungan hidup, dan kualitas air telah dievaluasi. Kisaran laju pertumbuhan spesifik, konsumsi pakan, efisiensi pakan, dan tingkat kelangsungan hidup adalah 2,50-2,58%, 56,84-60,69%, 292,44-297,45 g, dan 97,78-100,00%. Tepung ikan asin bawah standar sebagai pengganti tepung ikan dalam formulasi pakan dapat mengganti sebanyak 17%. Kata kunci: Tepung ikan asin bawah standar, substitusi, Ikan Nila, pertumbuhan, efisiensi pakan, konsumsi pakan
ANALISIS TABARRU DAN KLAIM PESERTA PADA ASURANSI SYARIAH DI INDONESIA
Authors: Rolianah Wiwik Saidatur 
Published: April 2020

Asuransi syariah yang muncul dari tahun 1994 yang didukung banyak pihak telah mewarnai dunia lembaga keuangan syariah. Perbedaan asuransi syariah dan konvensional pada dasarnya terletak pada preminya, yaitu pada asuransi syariah terdapat dua bagian meliputi unsur tabungan dan unsur tabarru. Penelitian yang berjudul “Analisis Tabarru dalam Asuransi Syariah di Indonesia terhadap Klaim Peserta” ini adalah hasil dari penelitian yang bertujuan menganalisis antara unsur tabarru dan klaim peserta pada asuransi syariah di Indonesia.
Dari hasil penelitian yang dilakukan peneliti menemukan keterkaitan antara unsur tabarru dan jumlah klaim asuransi yang diberikan kepada peserta asuransi syariah. Namun, untuk dana tabarru tidak ditentukan berdasarkan jumlah premi yang dibayarkan, kecuali untuk dana tabungan maka dan bagi hasil peserta asuransi syariah.
Un manuscrit inédit de Durkheim
Authors: Durkheim Émile 
Published: April 2020

*Full article is in FrenchFrench abstract:
Ce texte daté du 2 décembre 1899 est la première leçon de la quatrième année du cours de Durkheim sur la Physique générale du droit et des moeurs. Il est intitulé Plan du Cours – Les Sanctions pénales. Dans la première partie du texte, Durkheim présente le plan de cette dernière année du cours. Il se propose d’abord de compléter l’étude de l’éthique objective des systèmes de morale familiale, professionnelle, civique et juridique (que nous connaissons parce qu’elles ont été publiées dans les fameuses Leçons de sociologie) par l’étude objective des sanctions et responsabilités. Cette première partie du cours sera consacrée à la théorie spéciale des sanctions (négatives pénales et civiles, positives) et responsabilités. La dernière partie du cours, sa conclusion, portera sur l’éthique subjective. Une fois ce plan de cours exposé, dans la deuxième partie du texte, Durkheim propose une définition sociologique de la sanction pénale qu’il justifie d’abord par la réfutation des définitions de la peine qui postulent un lien entre souffrance et peine. Ensuite, pour illustrer le caractère sociologique et justifier sa définition préalable de la peine, Durkheim commence à présenter une typologie des sanctions négatives (sanctions punitives pénales, publiques ou privées, sanctions restitutives civiles, etc.). Au terme de sa leçon, il considère avoir défini la peine de manière sociologique, c’est-à-dire en s’en tenant aux caractéristiques extérieures les plus saillantes de son objet, sans recourir à l’intention du patient ou du législateur ni à la question de la responsabilité.
IRON DEFICIENCY IN HEART FAILURE
Authors: Badyal Kulbhushan , Panhotra Shivani 
Published: April 2020

Background: Data on the burden of Iron deficiency (ID) in Heart failure (HF) patients in India are sparse and there is very little information available about the prevalence of iron deficiency in heart failure with mid-range (HFmrEF) and preserved ejection fraction (HFpEF) in comparison to heart failure with reduced ejection-fraction (HFrEF).
Aims and Objective: This study was carried out with aim to evaluate iron profile in HF patients and to know the prevalence of ID in HFpEF, HFmrEF and HFrEF in our region.
Materials and Methods: Patients with clinically diagnosed HF were enrolled in the study. This was a single tertiary care centre, prospective, observational study carried out from December 2017 to November 2018. Patients were classified into HFrEF, HFmrEF and HFpEF on echocardiography. Serum ferritin (micrograms per liter), serum iron (micrograms per liter), total iron binding capacity (micrograms per liter), transferrin (milligrams per deciliter), and transferrin saturation were measured to assess iron status. Absolute ID was defined as serum ferritin < 100 mg/L and functional ID was defined as normal serum ferritin (100–300 mg/L) with low TSAT (<20%).
Results: A total of 120 patients of HF (66.7% males and 33.3% females) were studied. Out of 120 patients, 78 (65%) patients of HF had ID. Absolute ID was in 38.3% and functional ID was seen in 26.7% patients. 62.5% of males had ID, whereas, 70% of females had ID in HF. Patients with ID had higher NYHA Class, 35.9% compared to 23.8% patients without ID. ID was high in all subsets of HF. ID was found in 61.11% in HFrEF, 67.44% in HFmrEF and 69.57% in HFpEF. P-0.71. 14.1% patients had ID, but no anemia (p- 0.02). In anemic patients, ID was more (85.2%) than non anemic patients (69%).
Conclusion: In our study, prevalence of ID was higher in patients of HF than that reported from western literature. HFpEF had higher prevalence of ID followed by HFmrEF and HFrEF, respectively. Literature is scanty about HFmrEF, our study has given an insight of ID in this subset of HF. ID can occur even without anemia and females are more prone to have ID in HF. Our study highlights the importance of diagnosis and treatment of ID in all subsets of HF, in order to improve quality of life, morbidity and mortality in patients of HF.
Keywords: Iron deficiency, Heart Failure, Anemia, HFrEF, HFmrEF, HFpEF
ROLE OF NUTRITION IN MAINTAINING NORMAL EYESIGHT-A REVIEW
Authors: Nazrana Naghma , Jain Tejasvi , Verma Sanjay 
Published: April 2020

The eye is particularly susceptible to oxidative stress as a result of its high oxygen consumption, high concentration of polyunsaturated fatty acids and cumulative exposure to high-energy visible light. This combination of factors leads to the generation of reactive oxygen species that can trigger oxidative damage to ocular tissues. There is evidence that the human consumer should avoid excessive supplementation with carotenoids. Poly-unsaturated fatty acids are linked to eye disease (as well as multiple other chronic diseases) in both positive and negative ways. Dietary poly-unsaturated fatty acids fall into two major groups, i.e., omega-6 (mainly linoleic acid and arachidonic acid) and omega-3 fatty acids, mainly alpha-linolenic acid, eicosapentaenoicacid (EPA) and docosahexaenoic acid (DHA). Vitamin A deficiency is rare in the United States, but it is common among the poor in developing countries. It's estimated that approximately 250,000 to 500,000 malnourished children worldwide become blind each year due to vitamin A deficiency that could have been prevented with a proper diet. A lack of vitamin A causes the cornea to become very dry, leading to clouding of the front of the eye, corneal ulcers and vision loss. Vitamin A deficiency also causes damage to the retina, which also contributes to blindness.
Keywords: Vitamin A, DHA, Glaucoma, retinopathy
Modelling of Hybrid Method for VOC Removal from Process Wastewater: Distillation and Hydrophilic Pervaporation
Authors: Szilágyi Botond , Huyen Trang Do Thi , Fózer Dániel , Selim Asmaa , Haáz Enikő , Tóth András József 
Published: April 2020

The study is motivated by the industrial problem from pharmaceutical industry, which is ethanol and methanol removal from process wastewater. To complete this goal hybrid method is investigated and optimized. Two distillation columns are sufficient for separation of alcohol-water mixture. Suitable water can be purified as bottom product of first column. Ethanol and methanol purification is achieved with combination of second distillation column and pervaporation. The target of this research is to rigorously model and optimize the separation of water-ethanol-methanol ternary mixture in professional flowsheet simulator environment. The minimal sufficient membrane transfers area and number of minimal theoretical stages of the columns are determined. Cost estimation is also investigated according to Douglas methodology. Considering the simulation and economic results it can be determined that, the hybrid configuration is suitable for separation of ternary mixture in 99.5 weight percent purity.
VALIDITAS BAHAN AJAR KIMIA PADA MATERI IKATAN KIMIA BERBASIS EXE-LEARNING UNTUK SEKOLAH MENENGAH TINGKAT ATAS/SEDERAJAT
Authors: Herdini Herdini , Erna Maria , Aminullah Restu 
Published: April 2020

Bahan ajar kimia berbasis exe-learning pada materi ikatan kimia dirancang sesuai dengan standar kompetensi pada Kurikulum 2013. Jenis penelitian yang digunakan adalah penelitian pengembangan dengan menggunakan model ADDIE (Analyze, Design, Development, Implement and Evaluate). Penelitian dilakukan hanya sampai pada tahap Development (Pengembangan), karena tujuan penelitian ini hanya sebatas mengembangkan dan menghasilkan bahan ajar kimia berbasis exe-learning pada materi ikatan kimia yang valid untuk digunakan dalam pembelajaran berdasarkan penilaian validator. Instrumen pengumpulan data yang digunakan adalah lembar validasi ahli materi dan lembar validasi ahli media yang meliputi aspek perancangan, aspek pedagogik, aspek isi dan aspek kemudahan penggunaan yang diberikan kepada 4 orang validator yakni, 1 orang ahli media dan 3 orang ahli materi serta angket tanggapan peserta didik dengan jumlah responden 30 orang. Teknik analisis data yang digunakan dalam penelitian adalah analisis statistik deskriptif, yaitu dengan cara menghitung persentase nilai validasi. Penelitian menunjukkan bahwa hasil validasi yang dilakukan diakhir kegiatan validasi memperoleh persentase rata-rata penilaian sebesar 89,14% dengan kategori valid dan persentase tanggapan peserta didik sebesar 94,81% dengan kategori baik. Berdasarkan kriteria kelayakan analisis persentase dapat disimpulkan bahwa bahan ajar kimia berbasis exe-learning pada materi ikatan kimia yang dikembangkan sudah valid sehingga dapat digunakan dalam pembelajaran kimia kelas X Sekolah Menegah Atas (SMA)/derajat.
L'analyse pollinique de la tourbière de Fos-sur-Mer (B. du Rh.)
Authors: Triat H. 
Published: April 2020

Situé en liseré sublittoral, en bordure de l’embouchure du Rhône, le gisement tourbeux de Fos-sur-Mer (Bouches-du-Rhône, France), profond de 4,80 m, repose directement sur le poudingue quaternaire de Crau.
L’étude des données pollenanalytiques et géologiques a permis de reconstituer l'évolution de la végétation provençale en ce lieu depuis 6000 ans. A la base du diagramme, l'horizon Juniperus-Phillyrea-Pistacia est interprété comme l'écho de la proximité de groupements édaphiques liés à un complexe dunaire qui a été démantelé par la transgression versilienne.
L'intervention relativement récente des chênaies à feuillage persistant succédant à une chênaie subméditerranéenne, le témoignage de l'activité agricole et la déforestation sont mis en évidence. L'analyse pollinique fournit des éléments pour la connaissance du passé de quelques taxons et la solution du problème de l'origine d'espèces considérées en ce lieu comme des survivantes glaciaires.
Comportement et modifications physiologiques du Coléoptère aquatique Berosus spinosus (Hydrophilidae) en période de sécheresse de son habitat
Authors: Alquier Christian 
Published: April 2020

Behaviour and physiological modifications of the aquatic Beetle B. spinosus (Hydrophilidaé) during the dryness of his habitat.
In order to avoid the drying of his biotope during summer, the Beetle B. spinosus sinks into the ground where he hollows a lodge. He stays here in a latent life until autumn. During this time, his respiratory metabolism is weaken, that is moduling the effects of the temperature, although his total balance-sheet is not weaken.
Sur la biologie et l'écologie des espèces du genre Hemineura tetens en Provence occidentale (Psocopteres Elipsocidae)
Authors: Guillaumont F. 
Published: April 2020

Dans ce travail sont décrits les biocycles de deux espèces d'Hemineura strictement méditerranéennes, H. hispanica et H. bigoti. Ces espèces sont univoltines avec apparition des larves et des imagos en saison froide. En dehors de cette saison, les deux espèces subsistent sous forme d’œufs soumis à un état de vie ralentie comparable à une diapause.
Le développement larvaire se déroule en six stades ; sa durée s’échelonne, pour les deux espèces, entre un mois et un mois et demi. Les six stades sont décrits et figurés. Le développement larvaire est comparable chez ces Hemineura ; par contre, leur éthologie diffère quelque peu.
Application du concept de la diversité spécifique à la dynamique de trois populations d'Oribates (Acariens) de la forêt de la Sainte Baume (Var) - Partie II : Variabilité temporelle selon les différents niveaux prospectés
Authors: Lions Jean-Claude 
Published: April 2020

Using the same method as in the first part of this work, Theory of Information. We have studied the cyclic specific diversity of three prospected levels, litter, 0 -5 cm, -5 -10 cm in three stations of Sainte Baume forest (Var).
We have showed as best as possible the variations of the fauna in function of pedoclimatic characteristics.
Contribution à l'étude de la végétation muscinale de quelques formations du maquis Corse. Les cistaies sèches et les peuplements à Halimium halimifolium
Authors: Hébrard Jean-Pierre 
Published: April 2020

The author carried out a study on the bryophytic vegetation in dry Cistus or Halimium halimifolium (L.) Willk. formations of corsican lowlands.
Cistus populations (Cistus monspeliensis L. always dominant) occur on siliceous levellings, particularly granite or schist, in opened and sunny situations where, on relatively sour soils, the values are low for organic matter, litter (total average : 16,4% on 46,5 m2) and moss cover (23,7%), with Pleuridium subulatum, Rhynchostegium megapolitanum, Weisia viridula, Pleurochaete squarrosa, Trichostomum brachydontium Scleropodium Touretii and Bryum bicolor, all xerophilous taxa leading to 5 different variants (Bryum bicolor and Funaria hygrometrica variant, Rhynchostegium megapolitanum, Pleuridium subulatum, Weisia viridula, Scleropodium Touretii variants). In Halimium halimifolium formations, the bryophitic vegetation is very poor (Bryum capillare followed by Pleuridium subulatum, Trichostomum brachydontium or Weisia viridula), because of the high permeability and instability of the sandy substrate.
Analyse pollinique de la tourbière du plateau d'Ovace (Montagne de Cagna- Corse)
Authors: Reille Maurice 
Published: April 2020

An interpretation is given of a pollinie diagram from the peat-bog of the Ovace Plateau (Montagne de Cagna, Corsica) on the basis of an analysis of recent pollen rain made in massif, the results of which show the extraordinary under-representation of Abies in the thick fir-grove and the role of collector played by this last as regards the pollen of mean altitude trees.
The end of the Subboreal period, which is relatively dry everywhere in Corsica, is essentielly propitious to Pinus laricio. Abies is extending as soon as the Subatlantic period. The analysis of its pollinie curve shows that the regression of the curve of a tree, which is generally interpreted as a recession of the forest, may be caused, on the contrary, by a decrease of blossoming related to a thickening of the forest.