bluuebunny/crossref_metadata_2025 huggingface dataset:
Particulate Erosion Resistance of Thermally Sprayed Coatings at Elevated Temperature
Authors: Yoshida M. , Yomogizawa M. , Endo N.
Published: October 2022

This work investigates the particle erosion properties of wear protection layers at high temperatures. The materials tested include tungsten and carbide cermets, nickel alloys, and chromium steel applied by different thermal spraying methods. Among key findings: HVOF-sprayed Cr3C2-NiCr cermet coatings showed the least amount of wear after particle erosion testing. It was confirmed that erosion resistance depends on elastic-plastic conditions between the particles and coating surface, not layer hardness. The impact of solid particles does not cause abrasion in elastic friction areas and only rarely causes abrasion in regions where plastic plowing occurs. Paper includes a German-language abstract.
Chlorine Corrosion of Thermally Sprayed Coatings at Elevated Temperatures
Authors: Uusitalo M.A. , Vuoristo P.M.J. , Mäntylä T.A.
Published: October 2022

This study compares the corrosion resistance of a wide range of coatings in a chlorine-containing atmosphere at elevated temperatures. Four HVOF-sprayed NiCr coating samples were produced and tested along with an iron-aluminide HVOF layer, a chromium diffusion layer, and a laser-treated HVOF NiCrMo layer. The investigators found that the structure of HVOF coatings has a major effect on corrosion resistance and that chlorine corrosion primarily attacks the substrate through cracks and interconnected networks of pores and oxides at splat boundaries. They also observed that laser melting increases corrosion resistance by homogenizing the coating structure. Paper includes a German-language abstract.
Entwicklung eines neuen Drei-Kathoden Plasmabrenners (Development of a New Three-Cathode Plasma Gun)
Authors: Nassenstein K. , Peschka W.
Published: October 2022

This paper introduces a new three-cathode plasma burner and explains how it functions in comparison to conventional plasma guns. Paper text in German.
Suspension Plasma Spraying of Ceramics by Using an Ink Jet Printer
Authors: Kuroda S. , Blazdell P.
Published: October 2022

Coatings produced by suspension plasma spraying are characterized by their small grain size, which usually translates to better properties. In this study, a ceramic suspension is prepared from zirconia nanopowder and an organic solvent for use in an inkjet printer. The print head dispenses a stream of droplets, approximately 100 µm in size, that are injected into a dc plasma jet. Investigators found that the droplets disintegrate in transit and are much smaller by the time they hit the substrate. By heating the substrate surface, it is possible to create regularly shaped splats that are much smaller than those achieved by conventional plasma powder spraying. Although SEM examination revealed microcracks in some of the larger splats, no signs of cracking were observed in splats smaller than the critical diameter of 5 µm. Paper includes a German-language abstract.
Effect of Spray Parameters on the Structure of Nano-TiO2 Deposits Produced by Liquid Flame Spraying
Authors: Li C.-J. , Yang G.-J. , Wang Z.
Published: October 2022

In this study, nanostructured TiO2 deposits are produced by liquid flame spraying using a two-fluid atomizing nozzle. The coatings are systematically analyzed to determine the effect of spray parameters on grain size and phase structure. Using a butyl titanate ethanol feedstock and appropriate process conditions, TiO2 deposits have been produced with a phase concentration of more than 80% anatase and a grain size of 30 nm. Paper includes a German-language abstract.
Effect of Nozzle Design and Atomization Gas on the Properties of Electric Arc Sprayed Ni18Cr6Al2Mn Coatings
Authors: Varis T. , Rajamäki E.
Published: October 2022

This paper evaluates various methods for adjusting the degree of oxidation in arc-sprayed layers. Oxidation control is primarily achieved through the use of a nonoxidizing gas, such as argon or nitrogen, especially in combination with a fine nozzle. In the case of Ni18Cr6Al2Mn deposits, the measured oxide content varied from 0.85 to 3.41 wt% based on the atomizing gas, nozzle, and stand-off distance used. Paper includes a German-language abstract.
Developments in Laser Shock Adhesion Test (LASAT)
Authors: Berthe L. , Bartnicki E. , Bolis C. , Boustie M. , Arrigoni M. , Barradas S. , Jeandin M. , Barbezat G. , Dumont B. , Desalos Y.
Published: October 2022

This paper discusses the principles of laser shock adhesion testing, a nonintrusive method for measuring the bonding strength of coatings. The technique uses a laser to generate a thermal shock in the substrate, while Doppler laser interferometry is used to detect detachments. An application example is presented in which the method is employed to measure the adhesion strength of a plasma-sprayed copper coating on an aluminum substrate. The results are compared with numerical simulations of shock wave propagation. Paper includes a German-language abstract.
Innovative Methods for the Characterization of Thermal Barrier Coatings
Authors: Niccolai F. , Bardi U. , Carrafiello L. , Placidi M. , Rizzi G. , Scrivani A.
Published: October 2022

Thermal barrier coating failures almost always occur by spallation due to interlayer stresses. During service, a thermally grown oxide forms between the bond coat and insulating ceramic. This oxide has a significant impact on the life of the coating. In this work, a number of innovative methods are used to study TBC bond coats, topcoats, and interface oxide layers. CoNiCrAlY bond coats produced by APS, VPS, and HVOF spraying are analyzed by X-ray photoelectron spectroscopy (XPS) and compared based on the presence of oxides. Zirconia powders and topcoat layers are examined by X-ray diffraction and Raman scattering in order to study the crystal structure and spatial distribution of different phases. The authors also use Raman microscopy to map the surface of the topcoat layer and XPS to determine the elemental composition. This provides useful data because surface and interface roughness affect the spallation resistance of the oxide layer and thus the expected life of the TBC. Paper includes a German-language abstract.
AlSi-BN Abradable Materials for Aerospace Applications
Authors: Purdie S. , Dorfman M.R. , Britton C. , Harrison K.
Published: October 2022

In a recent effort, AlSi 20wt% BN powder was optimized for clearance control applications in aircraft engines. This paper follows up on the initial results, reviewing the wear mechanism of AlSi, the corrosion behavior of AlSi-BN and AlSi-graphite, and the commercial use of AlSi-BN abradable coatings. Paper includes a German-language abstract.
Simulation of Crack Formation and Delamination of Plasma Sprayed Coating with MSC-MARC
Authors: Kundas S. , Kashko T. , Hurevich V. , Lugscheider E. , Papenfuß-Janzen N.
Published: October 2022

In this paper, the authors use computational tools to simulate thermal and mechanical processes involved in plasma spraying that lead to crack formation and delamination. The substrate-coating system is represented by a metal strip (120 x 20 x 2 mm) and a ceramic layer with a thickness of 0.06 mm. The transient heat transport problem and stress-deformation state of the 3D sample is solved via stress relaxation due to plastic deformation and distributed displacements or cracking. Paper includes a German-language abstract.
Interaction Between Near-Substrate Plasma Characteristics and Heat Flux into the Substrate by a Supersonic dc Plasma Jet of Ammonia and Nitrogen Under for Low-Pressure Nitriding
Authors: Tahara H. , Onoe K. , Yoshikawa T. , Ando Y.
Published: October 2022

In this paper, spectroscopic and electrostatic probe measurements are made to examine the characteristics of a supersonic dc plasma jet near the surface of titanium plate during a nitriding treatment. The low-pressure nitriding process is done using a mixture of ammonia, nitrogen, and hydrogen gasses. Heating effects from the plasma are evaluated with nickel slug and thermocouple attached to the plate. The authors present the results of their study along with observations, insights, and suggestions on how to improve plasma nitriding processes. Paper includes a German-language abstract.
Vacuum Plasma Spraying of Thin-Film Planar Solid Oxide Fuel Cells (SOFC) – Development and Investigation of the YSZ Electrolyte Layer
Authors: Lang M. , Henne R. , Pohl S.E. , Schiller G. , Hubig E.
Published: October 2022

This paper investigates the influence of plasma spraying parameters on the gas tightness and ionic conductivity of YSZ electrolyte layers in thin-film solid oxide fuel cells. Measurement data obtained from the layers are correlated with electrochemical test results, providing helpful information on how the performance of SOFC stacks can be improved. Paper includes a German-language abstract.
Effect of Powder Size on the Oxidation of MCrAlY Particles During HVOF Spraying
Authors: Li C.-J. , Li W.-Y.
Published: October 2022

In this investigation, chromium alloy powders of varying size are used to deposit coatings by HVOF spraying in order to study the effect of powder size on particle oxidation and oxygen content in the coatings. The results show that oxide content in both the layer and sprayed particles is extremely dependent on particle size and that little additional oxidation is likely to occur after particle impact. Paper includes a German-language abstract.
Structural Characterization of Plasma Sprayed and Spray-and-Fused NiCrBSi Coatings
Authors: Guilemany J.M. , Miguel J.M. , Vizcaino S. , Armada S.
Published: October 2022

This paper reports on a structural characterisation of the nickel alloy coatings, before and after the fuse process is done and the main phases in each case, showing important differences between the nickel alloy coatings. Spray and fuse process involves thermal spraying to apply a coating of special self-fluxing alloys and a post thermal treatment at temperature between the solidus and liquidus of the alloy, when important diffusion processes take place. An improvement of the hardness and tribological properties is observed with the addition of tungsten carbide-cobalt to the nickel alloy powder. The results show the excellent tribological properties of the spray and fused coatings, better than the obtained for the as-sprayed coatings. The adhesion strength of the nickel alloy coating after the thermal treatment achieve a value above 80 MPa. Paper includes a German-language abstract.
Correlation of In-Flight Particle Properties and Layer Structure in HVOF Spraying
Authors: Fukushima T. , Yamada H. , Kawakita J. , Kuroda S.
Published: October 2022

Previous studies have shown that gas shrouding is an effective means for controlling oxidation during HVOF spraying. In this present work, the authors attach a gas shroud to an oxyfuel torch with a longer barrel to further investigate the correlation between the state of HVOF sprayed particles and the density and oxygen content of the resulting layers. It is shown that with gas shielding, extended barrel length, and optimized spraying parameters, it is possible to accelerate powder particles to a velocity of over 750 m/sec with maintaining a high molten fraction, thereby producing very dense (zero porosity) stainless steel layers with oxygen contents less than 0.2% by weight. Paper includes a German-language abstract.
Influence of TiO2 Content on the Behavior of Al2O3 Layers Under Cyclic Tribological Loads
Authors: Costil S. , Normand B. , Coddet C. , Langlade-Bomba C. , Vannes A.B.
Published: October 2022

The sliding wear behavior of thermally sprayed aluminum oxide is fairly well studied, but little is known about its fretting behavior under cyclic tribological loads. This study investigates the fretting behavior of plasma sprayed alumina and the related influence of TiO2 additions. Three Al2O3-TiO2 composites are sprayed on steel substrates using commercial powders and the resulting layers are characterized based on hardness, porosity, surface morphology, phase composition, and fretting behavior. The results of the study show that TiO2 additions reduce microhardness and increase coating toughness. The effect of TiO2 on fretting behavior and surface wear is assessed after 10, 50, 100, 250, and 500 load cycles based on SEM imaging, friction measurements, and debris formation. Observations and test results are presented and discussed. Paper includes a German-language abstract.
Development of a Vacuum Plasma Sprayed Ceramic Coating for Electrostatic Chucks used in Semiconductor Manufacturing
Authors: Takeuchi J. , Yamasaki R. , Harada Y.
Published: October 2022

Electrostatic chucks are a potential alternative to vacuum stages used in semiconductor manufacturing. They have no moving parts; just a thin dielectric layer on an aluminum substrate. This paper explains how the dielectric coating for an electrostatic wafer holder was developed, tested, and optimized for commercial use. It describes the materials (Al2O3-TiO2) and spraying method (VPS) used, the rationale for selecting them, and the metrics on which they are rated. It explains how to verify that the layers have sufficient resistivity, adsorption properties, and thickness to satisfy application requirements. It also discusses the deoxidation of TiO2 during spraying and its effect on electrical properties. Paper includes a German-language abstract.
Capability of Emission Spectroscopy for Quality Assurance in Thermal Spraying
Authors: Wilden J. , Sachs H. , Wank A.
Published: October 2022

This paper demonstrates the use of emission spectroscopy for monitoring trace impurities in plasma and flame sprayed layers during deposition. It describes the working principles of the method and presents and analyzes different spraying scenarios where small amounts of certain impurities can have a major consequence if not detected. Paper includes a German-language abstract.
Influence of Plasma Gas Composition on Coating Properties Produced by Atmospheric Plasma Spraying
Authors: Duda T. , Rothardt T. , Babiak Z. , Mendelsohn M.
Published: October 2022

This study investigates the influence of plasma gas composition on deposition efficiency achieved during atmospheric plasma spraying and the properties of the resulting deposits. In the experiments, ternary mixtures of argon, hydrogen, and helium are used in different combinations and flow rates to spray Al2O3-TiO2 and ZrO2-Y2O3 powders on test substrates while measuring deposition efficiency. Several coating properties are measured, including porosity, hardness, and bond strength, and correlated with plasma gas ratios. Paper text in German.
Some Convergent Summation Theorems For Appell’s Function F1 Having Arguments −1, 1/2
Authors:   Jamia Millia Islamia (A Central University), Qureshi M.I. , Baboo M.S. ,   School of Basic Sciences and Research, Sharda University, Ahmad A. ,   Jamia Millia Islamia (A Central University)
Published: October 2022

In this paper, we obtain some closed forms of hypergeometric summation theorems for Appell’s function of first kind F1 having the arguments −1, 1/2 with suitable convergence conditions, by adjustment of parameters and arguments in generalized form of first, second and third summation theorems of K¨ummer and others.
On recognizing groups by the bottom layer
Authors:   Institute of Computational Modelling of SB RAS, Senashov V.I. , Paraschuk I.A. ,   Siberian Federal University
Published: October 2022

The article discusses the possibility of recognizing a group by the bottom layer, that is, by the set of its elements of prime orders. The paper gives examples of groups recognizable by the bottom layer, almost recognizable by the bottom layer, and unrecognizable by the bottom layer. Results are obtained for recognizing a group by the bottom layer in the class of infinite groups under some additional restrictions. The notion of recognizability of a group by the bottom layer was introduced by analogy with the recognizability of a group by its spectrum (the set of orders of its elements). It is proved that all finite simple nonAbelian groups are recognizable by spectrum and bottom layer simultaneously in the class of finite simple non-Abelian groups.
Construction of stochastic differential equations of motion in canonical variables
Authors:   Institute of Mathematics and Mathematical Modeling, Tleubergenov M.I. ,   Al-Farabi Kazakh National University, Vassilina G.K. ,   Institute of Mathematics and Mathematical Modeling,   Almaty University of Power Engineering and Telecommunications named after G.Daukeev, Seisenbayeva S.R. ,   Institute of Mathematics and Mathematical Modeling,   Al-Farabi Kazakh National University
Published: October 2022

Galiullin proposed a classification of inverse problems of dynamics for the class of ordinary differential equations (ODE). Considered problem belongs to the first type of inverse problems of dynamics (of the three main types of inverse problems of dynamics): the main inverse problem under the additional assumption of the presence of random perturbations. In this paper Hamilton and Birkhoff equations are constructed according to the given properties of motion in the presence of random perturbations from the class of processes with independent increments. The obtained necessary and sufficient conditions for the solvability of the problem of constructing stochastic differential equations of both Hamiltonian and Birkhoffian structure by the given properties of motion are illustrated by the example of the motion of an artificial Earth satellite under the action of gravitational and aerodynamic forces.
Meningkatkan Kemampuan Komunikasi Matematis Siswa dengan Implementasi Model Pembelajaran Missouri Mathematics Project (MMP)
Authors: Astiswijaya Nike
Published: October 2022

One of the goals of mathematics learning is that students can develop communication skills (Permen Number 22 of 2006). MMP model is one model that can improve student’s mathematical communication skills. Based on this, a research was conducted on the implementation of the MMP learning model with the aim to describe student learning activities in mathematics learning using the MMP learning model and to describe mathematical communication skills in mathematics learning after using the MMP learning model. The research method is descriptive. Population in this research were all students of class XI of SMK YP Gajah Mada Palembang in the 2018/2019 and the samples of this research were students of class XI TKRO 3. Data collection techniques using documentation, observation and test techniques. The data obtained were analyzed using descriptive statistical techniques namely average and percentage. The results showed that the learning activities of students in learning mathematics using the MMP model in class XI TKRO 3 were in the good category. Mathematical communication skills of students in learning mathematics after using the MMP learning model in class XI TKRO 3 are in the good category.

Key word: MMP Model learning, communication mathematics skill
Pengembangan Lembar Kerja Siswa Berbasis Discovery Learning
Authors: Purwasi Lucy Asri , Fitriyana Nur
Published: October 2022

The purpose of this study is to produce discovery learning based on valid, practical and effective discovery. This research is a research development using a modification of the development model of 4-D (Four D-Models) learning tools, consisting of defining, designing, developing, and disseminating. The instruments of this study were the worksheet validation sheets, practical sheets, student worksheets and worksheet effectiveness sheets. Some stages in this research consist of the development study phase and the evaluation phase to test the effectiveness and test the feasibility of new student worksheets for use in learning. Validity category research results obtained an average of 3.7 with a valid category. In the practicality category the worksheets were developed based on student assessments with an average of 3.83 and based on teacher ratings of 3.63 by being in the practical category. The results of the effectiveness of learning obtained by the achievement of teacher activity with an average of 4.37 with active categories. For observations of student activities during learning takes place an average of 3.73 with the category is in active criteria. In conclusion, the development of Discovery Learning based on LKS is categorized as valid, practical and effective to be used by students in building material on flat sides, cubes and beams.

Keywords: Development, Worksheet, and Discovery Learning.
Pengembangan Media Pembelajaran Interaktif Berbasis PMRI Menggunakan Macromedia Flash Profesional 8
Authors: Suryadi Iwan , Yanto Yufitri , Mandasari Novianti
Published: October 2022

This study aims to develop PMRI-based interactive learning media using professional macromedia flash 8 on square and rectangular subject matter for grade VII students of SMP Negeri 8 lubuklinggau, as well as knowing the quality of mathematics learning media developed from aspects of validity and practicality. The research method used is the Research & Development method based on the ADDIE development model. The ADDIE development model consists of 5 stages: analysis (Analyze); planning (design); development (Development); implementation (Implementation) and (5) evaluation (Evaluation). The results of this study produce a valid and practical interactive learning media. The results of validation by material experts and media experts indicate that PMRI-based interactive learning media using professional macromedia flash 8 square and rectangular subject matter meet very valid criteria with an average score of 4.22. As for the practicality assessment that was tested by teachers and students found to meet very practical criteria with an average score of 4.45. In conclusion, the development of interactive learning media using PMRI based using Macromedia Flash Professional 8 on the subject matter of square and rectangular for VII grade students of SMP Negeri 8 lubuklinggau shows valid and practical criteria to use.

Keywords: Interactive learning media, Macromedia Flash, PMRI, Square and Rectangle.
Penggunaan Animasi Powerpoint dan Prezi pada Mata Kuliah Geometri Euclide di Perguruan Tinggi
Authors: Widiawati Widiawati , Widyaningrum Indah
Published: October 2022

The purpose of this study was to find out the effect of using PowerPoint animation and Prezi usage on student learning outcomes and compare the differences between student learning outcomes using PowerPoint animation and Prezi. The method used is an experimental method with the Pattern Pretest-Posttest Control Group Design. The population in this study was all undergraduate students of Mathematics Education Study Program semester II at STKIP Muhammadiyah Pagaralam with a sample of two classes. Data collection techniques used are documentation and tests. Test data were analyzed through normality test calculation, homogeneity test, average one test and two average test with calculation using SPSS for windows. The results showed that there is an influence of using PowerPoint animation with ρ value 0.000 and Prezi ρ value 0.032 with student learning results and there is a difference between student learning outcomes using PowerPoint animation with Prezi with ρ value 0.006. In conclusion, there is a significant influence of the use of PowerPoint and Prezi animations on student learning outcomes and there are noticeable differences between the learning outcomes of students using PowerPoint animation and Prezi. The average student learning outcomes using PowerPoint animation are better than Prezi's.

Keywords: PowerPoint animation, Learning Outcomes, Prezi
Analisis Minat dan Motivasi Belajar, Pemahaman Konsep dan Kreativitas Siswa terhadap Hasil Belajar Selama Pembelajaran dalam Jaringan
Authors: Sihombing Susi , Silalahi Hizkia Ronaldus , Sitinjak Jonas Ramza , Tambunan Hardi
Published: October 2022

The purpose of this study was to investigate the relationship between the variables of interest and creativity, conceptual understanding and motivation on mathematics learning outcomes for students of class X SMA Medan City. This research is an ex-post facto research which is corrective. The study population was 180 students from two public and two private high schools taken in clusters from several secondary schools in the city of Medan. The sampling technique uses the Slovin formula. The results of the analysis showed that interest in learning mathematics obtained an average score of 76.84 from a maximum value of 100 with a standard deviation of 7.8 and a variance of 61.67. Furthermore, hypothesis testing using multiple linear regression analysis. In conclusion, interest in learning mathematics has an influence on students' mathematics learning outcomes, creativity in learning mathematics has no effect on students' mathematics learning outcomes, mathematics learning motivation has an influence on students' mathematics learning outcomes and understanding of mathematics learning concepts has an influence on mathematics learning outcomes for class X students Medan City High School.

Keywords: Geometry, Learning Outcomes, Student Creativity, Interests, Motivation, Concept Understanding.
Penerapan Orbits Mode Data Fitting Untuk Kalibrasi Dipstick
Authors: Pratama Jovian Dian , Haikal A Nafis , Herdiana Ratna , Hariyanto Susilo
Published: October 2022

ABSTRACT

The purpose of writing this article is to examine how mathematical literacy is during the Covid-19 period. The method used is to conclude theoretical studies by reviewing, analyzing, and concluding previous and developed research in the conditions of the Covid-19 pandemic. The author examines learning problems in the Covid-19 era related to mathematical literacy. The results of the study, mathematical literacy is related to real problems. The kinds of mathematical literacy are: spatial literacy, numeracy, and quantitative literacy or data literacy. In conclusion, the existence of learning barriers during the Covid-19 pandemic created solutions and learning strategies to improve mathematical literacy.

 

Keywords: Covid-19, Mathematical Literacy, Pandemic
Efek Potensial Pengembangan Sparkol Videoscribe terhadap Hasil Belajar Mahasiswa
Authors: Refianti Rani , Adha Idul
Published: October 2022

ABSTRACT

This study aims to determine the potential effect of developing sparkol videoscribe-based learning media on student learning outcomes of STKIP PGRI Lubuklinggau. This research is a development research using a 4D development model. This model consists of 4 stages of development, namely define, design, develop and disseminate. An assessment of student learning outcomes was conducted to determine the potential effect of developing sparkol videoscribe. Assessment of student learning outcomes is carried out by giving test questions after the learning is completed. The results of the research, the development of sparkol videoscribe has a positive potential effect, where 50% of students are in the very satisfactory category, 33.33% of students are in the satisfactory category and 16.66% of students are in the moderate category. In conclusion, the development of the sparkol videoscribe learning media that has been carried out has a potential effect on student learning outcomes.

Keywords: Potential Effects, Learning Outcomes, Development, Sparkol
Theory Of Didactical Situation (TDS), Kajian Karakteristik dan Penerapannya dalam Pembelajaran Matematika
Authors: Fuadiah Nyiayu Fahriza
Published: October 2022

This study aims to describe the characteristics of the Theory of Didactical Situation (TDS), especially in mathematics as an alternative information for educators to design learning according to the characteristics and needs of students and the learning objectives to be achieved. This study uses a literature review to explain the characteristics of TSD obtained from scientific papers and articles, relevant books, research reports, and other scientific sources. Based on the literature review, there are three characteristics of TDS, namely TDS' special attention to mathematics and its epistemology, epistemological characteristics, and students' cognitive dimensions. These three things are interrelated and support each other. This article also discusses the concept of adaptation through understanding adidactical situations and milieu and acculturation through understanding didactic situations and didactic contracts. In conclusion, through didactic situations that are built during learning and facilitated by the teacher, it is expected to be able to develop the potential of students, namely students can build their own knowledge to be achieved.

Keywords: Theory of Didactical Situation, epistemological barriers, milieu, didactic contract, didactic situation
Odpowiedzialność karna za uchylanie się od wykonania środka kompensacyjnego
Authors: Łazarz Magdalena
Published: October 2022

Problematyką niniejszego opracowania jest ustalenie, czy w obowiązującym stanie prawnym istnieje potrzeba penalizacji zachowania polegającego na uchylaniu się od wykonania orzeczonego przez sąd środka kompensacyjnego, nałożonego na podstawie art. 46 § 1 k.k. W przypadku odpowiedzi pozytywnej na powyższe pytanie należy rozważyć, czy zachodzi potrzeba wprowadzenia regulacji w celu jej zapełnienia, ocenić zaproponowane zmiany i sformułować propozycje de lege ferenda. Bazę dla niniejszych dywagacji stanowić będzie ustawa z dnia 13 czerwca 2019 r. o zmianie ustawy – Kodeks karny oraz niektórych innych ustaw oraz projekt ustawy o zmianie ustawy – Kodeks karny oraz niektórych innych ustaw z dnia 14 maja 2019 r. wraz z uzasadnieniem, a także materiały legislacyjne i opinie środowiska naukowego na temat proponowanych regulacji.
Klauzule niedozwolone w umowach o świadczenie usług edukacyjnych
Authors: Zarębski Tomasz
Published: October 2022

Artykuł prezentuje zagadnienie klauzul niedozwolonych w umowach o świadczenie usług edukacyjnych. Analizie poddane zostały zatem klauzule umowy, której jedną stroną jest podmiot świadczący usługi edukacyjne (np. uczelnia, szkoła językowa lub centrum edukacyjne), a drugą stroną jest konsument najczęściej mający status studenta, słuchacza kursu lub uczestnika szkolenia. Przedstawiono najważniejsze regulacje normatywne dotyczące omawianych zagadnień, które są przedmiotem Kodeksu cywilnego, ustawy o prawach konsumenta oraz ustawy Prawo o szkolnictwie wyższym i nauce.
Pendidikan Perempuan dan Pemisahan Kelas: Kajian Pemikiran Rahmah el-Yûnusiyah
Authors: Adib M. Afiqul
Published: October 2022

This article is a study on Women's Education and Class Segregation which is studied from the perspective of Rahmah el-Yûnusiyah This study aims to review one of the characteristics of the concept of education initiated by Rahmah el-Yûnusiyah, namely class separation. Rahmah believes that women need a separate education model that is separate from men because there are many issues about women that cannot be explained properly if there are men in one room. As a result, women do not understand deeply about themselves. This research is a literature study. Descriptive analysis is used in this study in order to get a complete picture and avoid subjective views. Data collection is carried out systematically according to existing procedures. The results obtained from this study reveal that class separation can be an option method that can be used so that the delivery of material about women can be explained more openly and in detail without feeling awkward because there is no opposite sex in one room. This will strengthen women's understanding of the material about women, namely about themselves, so that women can act, respond, and solve their own problems without any doubts in every action they take.
Komunikasi Terapeutik Bidan Desa dalam Penanganan Pasien Ibu Hamil
Authors: Setianingsih Wiwin
Published: October 2022

Komunikasi merupakan fondasi penting bagi tenaga kesehatan seperti bidan selain ilmu kesehatan itu sendiri. Sementara itu kesehatan merupakan kebutuhan dasar manusia sebab semua manusia menginginkan hidup sehat agar bisa menjalani aktivitas kehidupannya secara maksimal. Studi ini mengenai komunikasi terapeutik bidan desa dalam menangani pasien ibu hamil. Fenomena ini diteliti dengan menggunakan pendekatan kualitatif dan metode studi kasus. Teknik pengumpulan data yang digunakan adalah observasi, wawancara mendalam dan studi dokumentasi. Tujuan penelitian ini untuk mengetahui: (1) proses komunikasi terapeutik bidan desa dalam menghadapi penanganan pasien ibu hamil, dan (2) bagaimana metode komunikasi terapeutik itu digunakan dalam menghadapi pasien ibu hamil. Hasil penelitian meliputi fase pra interaksi; fase orientasi; fase kerja komunikasi terapeutik; dan fase terminasi. Metode komunikasi terapeutik yang berlangsung mengutamakan efektivitas hubungan antarpribadi seperti mendengarkan dengan penuh perhatian, menanyakan keadaan pasien, mengklarifikasi, menawarkan informasi, meringkas, memberikan penghargaan kepada pasien, memberi kesempatan kepada pasien untuk memulai pembicaraan, dan menganjurkan pasien meneruskan pembicaraannya. Mereka juga melakukan komunikasi nonverbal.
Multikulturalisme pada Teknologi Internet dan Kekuasaan Global
Authors: Novianti Evi , Luthfiyyah Annisa , Wulung Shandra R. Panji
Published: October 2022

Fenomena komunikasi multikulturalisme sebagai fakta dan fenomena sosial, dengan berkembangnya jaringan komunikasi dan penerbangan, manusia semakin dimudahkan dalam melakukan komunikasi secara langsung di tempat yang jaraknya jauh. Kebijakan nasional diperlukan untuk menangkal dampak komunikasi multikulturalisme dan pada waktu yang sama memelihara hubungan internasional yang kondusif dengan menyiasati secara cerdas campur tangan asing dan kaki tangannya di dalam negara. Tujuan penelitian ini adalah mengidentifikasi komunikasi multikulturalisme pada persoalan komunikasi global dan dampak pada kekuasaan, urgensi kebijakan media, informasi global baru dan tata komunikasi. Pendekatan penelitian ini adalah kualitatif yang bertujuan untuk mendapatkan hasil yang holistik mengenai fenomena yang sedang terjadi saat ini. Perolehan data primer melalui wawancara, sementara data sekunder didapatkan melalui beberapa kajian terdahulu. Metode analisis pada penelitian ini menggunakan deskriptif kualitatif berdasarkan data yang diperoleh. Kebijakan tata informasi diperlukan untuk mengatur kebebasan informasi dan hak-hak privasi dengan keamanan nasional merupakan hal yang tak mudah diselesaikan. Pemerintah seharusnya menjunjung nilai budaya namun mempraktikan perilaku yang tak selaras dan bahkan membalikkan nilai-nilai budaya yang dihargai masyarakat.
Branding Alisha sebagai Brand Fashion Keluarga Muslim di Bandung
Authors: Yuliani Rostika , Komala Lukiati , Sjoraida Diah Fatma
Published: October 2022

Bisnis fashion muslim di Kota Bandung yang semakin meningkat mengakibatkan para desainer berlomba-lomba membuat brand fashion muslim, salah satunya adalah Zareena Servia, seorang designer Ikatan Perancang Busana Muslim Jawa Barat dengan brand Alisha Fancy Shop. Tujuan penelitian ini adalah untuk mengetahui cara branding Alisha diperkenalkan sebagai brand fashion muslim family kepada masyarakat. Penelitian ini menggunakan metode penelitian kualitatif dengan paradigma konstruktivis serta pendekatan studi kasus. Instrumen penelitian yang digunakan adalah wawancara, observasi, studi pustaka dan penelusuran secara online. Hasil penelitian menunjukan, branding yang dilakukan oleh Alisha dilakukan dengan cara advertising, marketing, public relations, dan special events dinilai sukses mengundan masyarakat dan wisatawan yang berkunjung ke Kota Bandung tertarik membeli busana muslim. Iklan dan promosi di media sosial, membuat masyarakat penasaran terhadap produk dari brand Alisha.
Computer-Mediated Communication sebagai Sarana Presentasi Diri Guru PAUD
Authors: Apriliani Siti Rina
Published: October 2022

Hadirnya media sosial memudahkan penggunanya untuk melakukan presentasi diri dalam Computer -Mediated Communication (CMC). Fasilitas yang diberikan di media sosial khususnya Facebook memungkinkan seseorang menggambarkan diri mereka untuk mendapatkan kesan tertentu dari pengguna lain yang terhubung dengan mereka. Guru PAUD dipilih sebagai subjek penelitian karena presentasi diri yang mereka lakukan di facebook dapat menjadi tolok ukur bagi orang tua murid dalam memberikan kepercayaan untuk mendidik anak mereka. Tujuan penelitian ini adalah untuk mengetahui bagaimana Guru PAUD yang berteman dengan orang tua di Facebook melakukan presentasi diri di Facebook. Penelitian ini merupakan penelitian deskriptif kualitatif, pengumpulan data dilakukan dengan mewawancarai tiga orang Guru PAUD di Kabupaten Sintang, Kalimantan Barat. Pertanyaan penelitian disusun berdasarkan lima kategori yang telah ditentukan, yaitu ingratiation, self-promotion, intimidation, exemplification, dan suplication. Hasil dari penelitian menunjukkan informan cenderung menggunakan strategi ingratiation dan self-promotion dalam melakukan presentasi diri di facebook. Dengan kata lain presentasi diri yang dilakukan informan di facebook berupa membagikan unggahan yang membuat mereka dinilai baik oleh orang tua murid dan mengunggah foto-foto yang berkaitan dengan pekerjaan mereka untuk menunjukkan integritas mereka sebagai Guru PAUD.
Iklim Komunikasi dan Gaya Kepemimpinan terhadap Kinerja pada Pegawai Sekolah Tinggi Ilmu Kesehatan XYZ
Authors: Prapti Riviani E. , Ruliana Poppy , Kawuryan Megandaru W. , Ernungtyas Niken F.
Published: October 2022

Tujuan penelitian untuk mengetahui dan menganalisis pengaruh iklim komunikasi dan gaya kepemimpinan terhadap kinerja pegawai. Teori komunikasi yang digunakan adalah iklim komunikasi dari Redding dengan dimensi: dukungan sekitar, keikutsertaan bawahan, adanya kejujuran dan keterbukaan. Gaya kepemimpinan dari Bass dan Avolio juga digunakan dengan dimensi: pengaruh ideal, motivasi inspirasi, stimulasi intelektual dan konsiderasi individu, serta kinerja dari Mitchell dengan dimensi: kemampuan komunikasi, berdasarkan standar operasional prosedur (SOP), inisiatif dan kapabilitas. Penelitian menggunakan pendekatan kuantitatif dengan metode penelitian survei untuk mendapatkan informasi atau data yang berkaitan dengan gaya kepemimpinan terhadap kinerja pegawai. Populasi penelitian adalah seluruh 154 sebagai dosen tetap di Sekolah Tinggi Ilmu Kesehatan XYZ. Teknik pengambilan sampel secara purposive sampling dengan kriteria lama bekerja minimal satu tahun, berpendidikan magister dan dosen tetap, sehingga diperoleh 50 orang pegawai sebagai responden. Teknik pengumpulan data melalui penyebaran kuesioner, observasi, wawancara, dokumentasi, studi kepustakaan, dan dokumentasi serta laman website. Teknik analisis data yang digunakan adalah analisis inferensial. Hasil penelitian menunjukkan iklim komunikai dan gaya kepemimpinan memiliki pengaruh kuat terhadap kinerja pegawai XYZ.
Ketahanan Pangan Indonesia Memperkuat Wujud Nasionalisme
Authors: Taufiqurokhman Taufiqurokhman , Andriansyah Andriansyah
Published: October 2022

The purpose of this research is to look at food security policies in realizing the ethos of nationalism, namely the fulfillment of household food with good, safe and equitable quality standards. The problem in writing this research is that food security is seen from various sides, economic, social and political, so that food security should not cause an instability in Indonesia. The research methodology uses qualitative descriptive analysis approach, with a desaint of research using Creswell's theory, J. W. (2014). Primary data in this study were obtained from the Ministry of Agriculture officials, for secondary data obtained from literature studies and documents relating to Food Security. The results of the study stated, (1) The agricultural sector is the main pillar of the development of almost all economic activities centered on the agricultural sector. (2) The government is obliged to guarantee the adequacy of food with good quality, price stability, for the community, especially for low income groups. (3) The archipelago's food security policy with the agricultural sector mentions the need for archipelago-minded agricultural centers that can streamline agricultural production so that the results can be maximized.
Implementasi Peraturan Daerah Tentang Wajib Belajar Madrasah Diniyah Awaliyah di Kota Cilegon Provinsi Banten
Authors: Baihaki Baihaki , Rusmiati Elis Teti
Published: October 2022

The era of regional autonomy opens up great opportunities for regional governments to develop education in the regions to become more qualified. Cilegon Regency Government followed up by issuing Regional Regulation Peraturan Daerah No. 1 of 2008 concerning Implementation of the Mandatory education in Madrasah Diniyah Awaliyah (MDA). In its implementation, after ten years running, that Regional Regulation is not implemented well as seen from the small participation of the community who send their children to Madrasah Diniyah. The amount of participation is not proportional compared to the number of graduated elementary school who wish to enroll in junior high school, even though the MDA certificate is one of the conditions for admission to junior high school. This study aims to analyze the implementation of Perda No. 1 of 2008 concerning Madrasah Diniyah Compulsory Education (Perda Diniyah) and to get more explanantion about the factors that influence it including: environmental conditions, inter-organizational relations, availability of resources and characteristics of the Perda executor. The theory used to analyze this problem is the Policy Implementation Theory from Rondinelli and Cheema. This research uses descriptive methods with qualitative data analysis. The results of this study concluded that the implementation of Diniyah Regional Regulations in Cilegon Regency, Banten Province was ineffective.
Pengalaman Komunikasi LGBT Genarasi Z Melalui Media Sosial
Authors: Rafi Sutan Yasid , Hamzah Radja Erland Erland , Pasaribu Mukka
Published: October 2022

Salah satu fenomena yang terjadi dalam lingkup sosial kita adalah adanya kelompok LGBT yang juga memiliki kebutuhan dalam berinteraksi sosial. Tujan penelitian ini untuk mengetahui tentang pengalaman komunikasi antara LGBT melalui media sosial. Teori yang digunakan adalah interaksionime simbolik untuk menjelaskan terjadinya proses komunikasi yang meraka alami pada media sosial. Metode penelitian ini menggunakan studi kasus untuk mempelajari sebuah fenomena secara mendalam. Hasil penelitian menunjukan bahwa terdapat proses komunikasi dalam preses interaksi yang terjadi dalam media sosial yang berujuan untuk mendapatkan informasi, mendapatkan teman baru bahkan pasangan. Dalam kasus ini, terdapat beberapa persamaan makna dalam simbol komunikasi verbal yang terjadi dalam komunikasi antara sesama lesbian dan gay. Tidak hanya simbol verbal, simbol non-verbal pun juga dipakai seperti gaya berpakaian yang ditunjukkan. Bagi mereka lesbian dan gay kedua simbol tersebut merupakan sebuah istilah yang membantu mereka menemukan teman sesama lesbian atau gay dan juga sebagai penentu peran mereka dalam sebuah hubungan homoseksual.
The Difference in Immunoglobulin G Levels Between Outpatients and Inpatients With COVID-19
Authors:   Metabolic Diseases Research Center, Research Institute for Prevention of Non-communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran., Madani Parisa Sadat , Mirzadeh Monirsadat ,   Metabolic Diseases Research Center, Research Institute for Prevention of Non-communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran., Rostamian Saba ,   Metabolic Diseases Research Center, Research Institute for Prevention of Non-communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran.
Published: October 2022

Background: Coronavirus disease 2019 (COVID-19) has rapidly become a pandemic since it was first reported in late December 2019. Serological reports are of great value to medical specialists in developing health policies. The detection of Immunoglobulin G (IgG) level in COVID-19 patients can specify a preclinical infection or previous exposure to the virus. Objective: This study aims to assess the IgG rate in patients with COVID-19. Methods: This is a cross-sectional study on 172 patients with confirmed COVID-19 (having positive PCR test) in Qazvin, Iran in 2020, including 86 inpatients and 86 outpatients. In order to measure the IgG levels, the serum samples were collected 3-5 weeks after onset of their clinical symptoms. Data were statistically analyzed in SPSS software v. 20, considering the significance level of P<0.05. Results: Of 172 patients, 81(94.2%) inpatients and 74(86%) outpatients tested positive for IgG, while 5(5.8%) inpatients and 10(11.6%) outpatients tested negative for IgG. The mean IgG level in inpatients was significantly higher than in outpatients (P<0.001) 3-5 weeks after a positive PCR test. Conclusion: The amounts of IgG in the sera of COVID-19 patients 3-5 weeks after the onset of symptoms can help health care authorities develop policies and control strategies by determining the burden of disease, monitoring the spread of disease, and estimating the epidemiological factors.
Analyzing the Relationship of Fluoride Contamination with Groundwater Temperatures in India
Authors: Shoeb Mohd , Akhtar Mohd Arslaan , Khan Wamiq Mohammed , Kamal Mohammad Arif
Published: October 2022

In this paper an attempt has been made to address fluoride contamination in groundwater of India from 2000-2020, along with its relationship with depth to water level and hots springs. Fluoride pollution has been widespread throughout India for decades. Because groundwater is India's primary supply of drinking water, fluoride pollution is a concern. The permissible limit of fluoride concentration by WHO is 0.6-1.5 mg/l while Bureau of Indian Standards (BIS) prescribes rather less vibrant range of fluoride 1-1.5 mg/l. Present study is review of fluoride concentration change in groundwater in past two decades of Indian states as well as validating the relation of fluoride concentrations with Depth to water level. With increasing depth to water level, the fluoride concentration in groundwater increases in 80% of the cases reviewed. Concentration of fluoride in Guwahati which is near the Brahmaputra River is higher (0.18 – 6.88 mg/l) than Nalbari (0.02 – 1.56 mg/l) which is away from Brahmaputra. There has been no significant change in the fluoride concentration in cases of Yavatamal & Guntur district during past two decades. In Nagaur district of Rajasthan fluoride concentration decreased from 8.5-28 mg/l in (2010) to 0.5-8.5 mg/l in (2013). In Unnao district fluoride concentration has increased from 1.45-3.75 mg/l in (2002) to 0.8-13.9 mg/l (2010). In case of Bihar, the areas of hard rock formations, the fluoride concentration were found to be higher while in the alluvial formations there were lesser cases of fluoride exceeding the required limit which is 1.5 mg/l. In Vellore district of Tamil Nadu fluoride concentration was found to be increasing within a period of 1 year from 0.2 – 3 mg/l in (2017) to 2.15 – 4.91 mg/l in (2018).