bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigation on Laser Cladding Processes Using High-Resolution In-Line Atomic Emission Spectroscopy
Authors: Schmidt M. , Gorny S. , Rüssmeier N. , Partes K. 
Published: September 2022

Abstract
Process monitoring and control methods during direct metal deposition (DMD) are used to ensure a consistent manufacturing quality of the process. In the optical regime, naturally occurring process emission provides therefore selective and specific element lines, which can be obtained by optical spectrometers. However, DMD processes are in the heat conduction regime and superimposed broad spectral emissions dominate the wavelength specific signals. The aim of this work is to investigate the occurrence of different elemental lines in DMD processes as well as deposition track cross-sectional dimensions. Therefore, experiments were simultaneously conducted by using a high-resolution spectrometer (resolution = approx. 47 pm FWHM at 522 nm and 55 pm FWHM at 407.5 nm) and a medium resolution spectrometer (resolution = 0.73 nm FWHM), which were coupled by a bifurcated optical fibre. A parameter study of 27 single track DMD experiments using Co-Cr-based (MetcoClad21) powder on low-alloyed tool steel C45W (1.1730) substrate material, varying laser power, scan velocity and powder feed rate was conducted. Series of spectra were obtained for all sets of parameters with a scan rate of 100 Hz. The individual wavelength spectrum was analysed and classified by an algorithm into two types. Type-A spectra, with specific element emission lines and Type-B spectra, without significant emission lines with mostly predominant thermal emission radiation. Each deposition track was coupled to cross-sectional dimensions, including height, welding depth and melted areas. In addition, certain elemental lines contained in Type-A spectra were verified by using data from the NIST atomic spectra database. The investigation indicates that the relative number of Type-A spectra with respect to the total quantity of spectra, correlates significant to the process parameters. All detected and identified element lines occurred to be non-ionised elements, especially Cr I, Fe I and Mn I lines were frequently observed.
Evaluation of the Chromium Carbide Deposited by HVOF for High Pressure Die Casting Molds
Authors: Mayer A. R. , Fals H. D. C. , Lourençato L. A. , Pukasiewicz A. G. M. 
Published: September 2022

Abstract
The demand for energy reduction increases every year. In general, reducing the weight of mechanical components is a direct and efficient way to reduce the energy consumption. Therefore, the automotive industry has been growing its use of low-density alloys, as the cases of aluminum and magnesium. High production rate and dimensional precision are need, which narrows the manufacturing techniques suitable. Among the manufacturing processes, high pressure die casting (HPDC) has shown a viable solution. Nonetheless, every process has gaps for improvement. In the case of HPDC tooling is one of the major costs, being responsible for a significant ratio of the final product price. Whereas many articles are focused on the improvement by the development of new materials and thin coatings for HPDC, there is a lack of thermal spray coatings as solution for the wear problems over HPDC. This paper has the focus on showing the use of Cr3C2 25 NiCr as a coating for the components used for HPDC, mainly the ones submitted to direct contact to the metal in fluid state. The idea is to compare the coating with the substrate regarding to thermal fatigue and verify whether it is a viable solution or not.
Yttria Coatings as Wear Protection Layer in the Semiconductor Industry
Authors: Nicolaus M. , Benedde M. , Möhwald K. , Maier H. J. , Walther R. 
Published: September 2022

Abstract
In the semiconductor industry, plasma etching processes are widely used. Process chamber parts that are located in the plasma etching system are also exposed to the harsh environmental conditions. Thus, parts located close to the process area are typically coated with yttria to increase service life, and thus process performance. However, such yttria coatings are usually porous, and thus can be attacked by fluorine containing plasma. In order to increase the lifetime of the components in the plasma etching system, this research project aimed to improve the protective yttria layer by reducing the porosity of the protective layer. Specifically, a design of experiment was employed in which the porosity was the target value. The main effects of the coating parameters and their interactions including the surface treatment before the coating process were determined. Furthermore, the bonding of the protective coating to the component to be protected, as well as the element distribution and the coating morphology were investigated. The results and their ramifications with respect to the envisaged application will be discussed.
Preparation and Property of Thermal Spraying Aluminum Bronze Polyester Abradable Sealing Coating
Authors: Liu T. , Liu J. , Guo D. , Zhang D. 
Published: September 2022

Abstract
Abradable seal coatings are widely employed in the gas turbine of aero-engine, which not only strength enough to resist the impact of external particles and airflow, but also excellent wear resistance. In the current study, we concentrate on APS sprayed Aluminum Bronze Polyester abradable coating that can be used in turbo engines both for seals and clearance control. A composite thermal spray powder, substantially in the form of clad particles each of which has coarse polyester powders and sub-particles of Cu-Al alloy powders, was prepared using mechanically clad process. Abradable seal coating was prepared by atmospheric plasma spraying. The microstructure, hardness, bonding strength, thermal shock resistance and corrosion resistance of coatings were researched. Properties of the coating were able to meet the application requirements. The coating microstructures and phase compositions were evaluated via SEM. The corrosion mechanisms of the coating were compared by analyzing the cross-sectional and top surface microstructures of the as-sprayed and eroded coatings.
Impacts of Nested Variance Components on Semiconductor Electrical Test Sampling
Authors: Potts David , Hildreth Scott , Nair Binod Kumar G. 
Published: September 2022

Abstract
Inline wafer electrical testing (WET) offers an early read on semiconductor manufacturing processes via measurements taken on test structures placed throughout the wafer. Interpreting the data can be challenging, however. In many cases, only a sample of the test sites are monitored in production. Complex manufacturing requirements further complicate the problem because some operations are iteratively executed within subregions across a given wafer, while others are run on the entire wafer at once, and still others are applied to wafers in batches. This results in a nested variance structure under which different physical mechanisms exhibit varying sensitivities to site-to-site, wafer-to-wafer, and lot-to-lot variations. This article uses Monte Carlo simulations to explore the impacts these hierarchical variance components can exert on perceptions of WET performance.
High Speed X-ray Tomography with Submicron Resolution for FA and Reverse Engineering of Packages, PCBs, and 300 mm Wafers
Authors: Lau S.H. , Gul Sheraz , Gelb Jeff , Qin Tianzhu , Zan Guibin , Matusik Katie , Vine David , Lewis Sylvia , Yun Wenbing 
Published: September 2022

Abstract
This article provides an overview of a commercial 3D X-ray system, explaining how it acquires high-resolution images of submicron defects in large intact samples. It presents examples in which the system is used to reveal cracks in thin redistribution layers, voids in organic substrates, and variations in TSV metallization on 300-mm wafers. As the authors explain, each scan can be done in as little as a few minutes regardless of sample size, and the resulting images are clear of the beam hardening artifacts that often cause problems in failure analysis and reverse engineering.
Sport Development Index (SDI) di Kabupaten Pacitan
Authors: Kustiawan Andri Arif 
Published: September 2022

The purpose of this study was to identify the level of community participation, the level of physical fitness, and the level of sports development in Pacitan Regency in terms of the community participation index and physical fitness index in 2020. This study uses a quantitative approach with survey research methods and descriptive evaluation approaches. The research sample was Pacitan District Community with a total of 90 people. Data collection techniques with questionnaire techniques (questionnaire) and test techniques. The validity of the measuring instrument used is a standard set in the Sport Development Index (SDI). The results of the study are as follows. (1) The public participation index is 0.388. The community participation index shows that the level of community participation in sports is included in the low category, (2) the community physical fitness index is 0.351. Community physical fitness index shows that public fitness is included in the low category, (3) the level of sports development in terms of participation and physical fitness of the community is included in the low category with an index of 0.369. Conclusions, participation index, physical fitness, and sports development in Pacitan District are included in the low category.
Keywords: Sport Development Index, Community Participation, Physical Fitness
Aktivitas Fisik Animo Wanita Masa Kini dalam Menurunkan Berat Badan
Authors: Tamher Linda Desrianda , Fitri Mustika , Pitriani Pipit 
Published: September 2022

The study aims to determine the influence of physical activity on obese women. The research design used is Pretest-Posttest Two Treatment Design. The subject that followed the study amounted to 22 obese women, divided into 2 groups, aerobic gymnastics and Zumba groups. The study was conducted 3 times a week, for 12 weeks, with the intemsities of 65 – 85% based on the maximum pulse of each subject. The tool used is Omron Karada Scale. The results of this research on aerobic aerobics and Zumba have been the effect of weight loss. Conclusion of this research of physical activity such as aerobic gymnastics and Zumba is able to lose the weight of obese women.
Keyword : Physical Activity, Obese Women, Weight Loss
Persepsi Mahasiswa Pendidikan Olahraga terhadap Perkuliahan Daring Selama Pandemi Covid-19
Authors: Yulianingsih Ika , Parlindungan Doby Putro 
Published: September 2022

The aim of the study was to determine the perceptions of sports education students towards online lectures during the Covid-19 pandemic. The method used in this research is descriptive quantitative by examining the perceptions of students in the Sports Education Faculty of Education, University of Muhammadiyah Jakarta. Data collection techniques using surveys through online questionnaires. The number of samples used in the study amounted to 65 students. The results of this study showed the percentage of 92.3% of students agreed with online learning, 6.1% disagreed with and 1.5% disagreed in taking online learning during the Covid-19 pandemic. In conclusion, students agree with the existence of online learning during the Covid-19 pandemic
Keywords: Perception, Online Lectures, Covid-19 Pandemic
Analisis Instrumen Asesmen Unjuk Kerja pada Pembelajaran PJOK di Sekolah Dasar Kota Cirebon
Authors: Nugroho Wahyu Adhi , Yudha Rivo Panji , Sundari Sri , Praja Handayani Nila 
Published: September 2022

This study aims to analyze the validity and reliability and practicality of the performance assessment instruments in PJOK learning in Cirebon City Elementary Schools. This research uses an R&D development model using Borg and Gall analysis which the researcher modifies into three stages of define design and develop. The results of the content validity test were analyzed using the T Score from all aspects assessed by experts which included aspects of the conformity of aspects with indicators, writing, language, and physical appearance, the ideal percentage value of 91% was included in the criteria Very good and worthy of use. The results of the reliability of performance instruments on a small scale use GENOVA analysis, for passing indicators (0.91), dribbling indicators (0.92). The practicality of the instrument analyzed using the T score obtained an average score of 52.33 and from the T score of each rater I (49), rater II (54), and from rater III a T score (54) was obtained and based on the instrument teacher's assessment performance assessment is classified as practical. In conclusion, the performance assessment instrument in PJOK learning that was developed has met the requirements of validity, reliability and practicality, as an evaluation tool that can be used further by teachers of PJOK SD in Cirebon City.
Keywords: Instruments, Performance, PJOK, Valid, Reliable
Tingkat Rasa Percaya Diri Siswa pada Pembelajaran Senam Lantai
Authors: Reza Egi Aldi , Syafei Muhammad Mury , Achmad Irfan Zinat 
Published: September 2022

This research aims to determine the level of self-confidence in learning floor exercise for seventh grade students of SMP Negeri 1 Pebayuran, Bekasi Regency. This research is quantitative descriptive. The method used is a survey and data collection techniques using a questionnaire or questionnaire. The population was 273 students with a sample of 74 students using the quota sample. The instrument uses a closed questionnaire included in the rating scale questionnaire. Using a Likert Scale. In the overall research results show the level of front roll confidence in learning floor gymnastics with a percentage of 50%. In conclusion, the level of self-confidence is in the unfavorable category.
Keywords : Level Of Self Confidence, Gymnastics.
Hubungan Kekuatan Otot Lengan dan Koordinasi Mata-Tangan dengan Kemampuan Servis Bawah Bola Voli Siswa
Authors: Ertanto Riko , Supriyadi Muhammad , Syafutra Wawan 
Published: September 2022

This study aimed to determine the relationship between arm muscle strength and eye-hand coordination with the ability to serve under volleyball male extracurricular students at Air Satan State Junior High School, Musi Rawas Regency. This research method is a quantitative method with correlational test. The population in this study were male volleyball extracurricular students at Air Satan State Junior High School, Musi Rawas Regency. The sample taken from the total sampling result is 21 students. Data collection techniques using tests and measurements. Data analysis techniques used are normality test, Pearson product moment correlation test and multiple correlation test. The results obtained, 1) there is a significant relationship between arm muscle strength and the ability to serve under volleyball male extracurricular students of Air Satan State Junior High School, Musi Rawas Regency, with rcount = 0.728> rtable = 0.433; 2) there is a significant relationship between eye-hand coordination and

the ability to serve under volleyball male extracurricular students of Air Satan State Junior High School, Musi Rawas Regency, with rcount = 0.795 > rtable = 0.433; 3) there is a significant relationship between arm muscle strength and eye-hand coordination of male extracurricular students at Air Satan State Junior High School, Musi Rawas Regency, with rcount = 0.871 > rtable = 0.433; 4) there is a significant relationship between arm muscle strength and eye-hand coordination together with the ability to serve under volleyball male extracurricular students of Air Satan State Junior High School, Musi Rawas Regency, with Rcount = 0.798 > Rtable = 0.433, Coefficient of Determination (KD) =63.6%. Conclusion, overall both simple and multiple.
Keywords: Arm Muscle Strength, Lower Service Ability, Eye-Hand Coordination
Pengembangan Model Aktivitas Fisik untuk Meningkatkan Kebugaran Jasmani pada Siswa Sekolah Menengah Atas
Authors: Lestari Inggit Dwi , Rustiadi Tri , Wahyudi Agung 
Published: September 2022

Tujuan Penelitian ini adalah mengembangkan model model aktivitas fisik untuk meningkatkan kebugaran jasmani pada siswa Sekolah Menengah Atas; mengkaji kelayakan model aktivitas fisik untuk meningkatkan kebugaran jasmani pada siswa Sekolah Menengah Atas; mengkaji efektivitas model aktivitas fisik untuk meningkatkan kebugaran jasmani pada siswa Sekolah Menengah Atas. Desain penelitian ini adalah penelitian dan pengembangan (Research and Development). Model pengembangan yang digunakan yaitu ADDIE (Analysis, Design, Development, Implementation, and Evaluation. Uji efektvitas dilakukan di SMA Negeri 1 Balapulang dengan sampel berjumlah 20 peserta didik yang diambil secara random sampling. Instrumen untuk menguji efektivitas dalam penelitian ini menggunakan tes kesegaran jasmani dari pusat kesegaran jasmani dan rekreasi tahun 2010 untuk anak umur 16-19 tahun. Uji efektifitas menggunakan pre-test dan posttest. Sebelumnya dilakukan uji prasyarat yaitu uji normalitas dan homogenitas. Teknik pengumpulan data pengembangan produk saat validasi ahli menggunakan teknik Delphi. Teknik pengumpulan data uji coba di lapangan (skala kecil dan skala besar) menggunakan angket. Analisis data menggunakan aplikasi software SPSS versi 22. Hasil penelitian menunjukkan bahwa; Model pengembangan menggunakan metode ADDIE, yang meliputi lima langkah yaitu tahap analisis, desain, pengembangan, implementasi, dan evaluasi, uji efektivitas produk; Model aktivitas fisik selama pandemi bagi peserta didik Sekolah Menengah Atas layak digunakan sebagai panduan aktivitas fisik yang tepat selama pandemi. Penilaian ahli materi rata-rata yaitu sebesar 88,33%, masuk dalam kategori sangat baik. Penilaian ahli media rata-rata sebesar 90,63%, masuk dalam kategori sangat baik; Uji efektivitas menunjukkan bahwa kebugaran jasmani meningkat setelah menggunakan model aktivitas fisik dengan p < 0,05. Jadi dapat disimpulkan bahwa model aktivitas fisik selama pandemi bagi peserta didik Sekolah Menengah Atas efektif terhadap kebugaran jasmani peserta didik.
Kata kunci: Aktivitas Fisik, Kebugaran Jasmani, Model, Siswa Sekolah Menengah Atas
Efektivitas Model Pembelajaran Contextual Teaching And Learning Dalam Meningkatkan Hasil Belajar Sejarah
Authors: Isbandiyah Isbandiyah , Sarkowi Sarkowi , Rohana Rohana 
Published: September 2022

The research aims to analyze effect of the Contextual Teaching and Learning model on history learning outcomes at SMK Negeri 1 Lubuklinggau and analyze effectiveness of the Contextual Teaching and Learning model in improving history learning outcomes at SMK Negeri 1 Lubuklinggau. The type of research is a pure experimental research with used pretest-postest group design. The sample the students at X AKL3 as the experimental class with the students X X AKL1 as the control class. The result of data analysis in this research concluded that: (1) Contextual Teaching and Learning model affect the history learning outcomes at SMK Negeri 1 Lubuklinggau; and (2) Contextual Teaching and Learning model are affective in improving the history learning outcomes at SMK Negeri 1 Lubuklinggau.

Keywords: history learning outcomes, Contextual Teaching and Learning model (CTL)
Bentuk Pertunjukan Drama Tari Bejoraq
Authors: Kailani Ashwan , Murcahyanto Hary , Mariadah Mariadah 
Published: September 2022

This study aimed to to describe the element of performance form and the meaning of the motion of the drama "bejoraq" in the Marong village Praya Timur, Lombok Tengah Regency. There were also data collection techniques carried out in this study by conducting observations, interviews, and documentation. This research was a descriptive qualitative research by taking all samples supporting this study. The data analysis technique used consists of four stages such as data collection data reduction, data display, and conclusion drawing/ verification The dominant theory used in this study was a theory about the form of art performance that is shown to be shown can be exhibitions, dance, puppets, music, drama, and so on. From the results and discussion it was concluded that the form of the Bejoraq drama show has several elements that strengthen performances such as motion, costumes, makeup, dialogue, music, stage, lighting, and the theme of the show.
Keywords: Form of Performance, Dance drama, "Bejoraq".
Bentuk Dan Elemen Gerak Tari Dayang-Dayang
Authors: Murcahyanto Hary , Imtihan Yuspianal , Yuliatin Riyana Rizki , Mahyumi Hidriana Sulastri 
Published: September 2022

This paper is based on the results of a study aimed at describing the forms of motions and elements of Dayang-dayang dance movements in Lombok Timur Regency. The form of motion in question is a form that is produced from the dancer's body language and the element of motion consists of space, time and energy used. Using a qualitative approach with a focus on the form of motion and the elements of Dayang-dayang dance moves. Data collection uses observation, interviews and study documents analyzed by reducing data, grouping, presenting and summarizing data. The result of this study concluded that the form of Dayang-dayang dance moves consisted of five forms of sedentary motion and three forms of movement while Dayang-dayang dance elements were dominated by upper, middle, and lower levels with slow rhythm toward diagonal, side and front.
Keywords: Forms Of Motion, Elements Of Motion, Dayang-Dayang Dance.
Akulturasi Budaya Lampung Dan Cina Pada Nuwo Tantan Gumanti
Authors: Insani Marzius , M Syaiful , Rachmedita Valensy , Pratama Rinaldo Adi 
Published: September 2022

ABSTRACT
The research aims to find and explore the history and acculturation of Lampung and Chinese in the house of Nuwo Tantan Gumanti. The research method is descriptive and data analysis using descriptive analysis. The results of this research showed that there was cultural acculturation between Lampung and China in the house of Nuwo Tantan Gumanti, including glass with Chinese ornaments such as phoenixes, snakes, butterflies and the colorful glass on the top of the window and above the room door. There are also Chinese scripts that are still clearly visible on the connecting wood and the walls of the house. The roof of Nuwo Tantan Gumanti is different from other houses in Lampung community, because the shape of a pyramid, and the pillars are rectangular and have pegs that are connected to them. From the research results It can be concluded that there is a cultural acculturation between Lampung and China in the Nuwo Tantan Gumanti architecture on several sides of the building.
Keywords: Acculturation, Architecture, Culture, China, Lampung, Nuwo.
Studi Kasus Teman Sebaya Dalam Pembentukan Gaya Hidup Siswa
Authors: Darwis Arisa , Malik Agung Rinaldy , Burhan Burhan , Marto Hasia 
Published: September 2022

ABSTRACT
This study aims to describe the form of lifestyle, review how peer influence is in shaping the lifestyle and the negative impact of the student's lifestyle. The method in this research is qualitative research using a case study (case study). Sources of data in this study were students of SMA Negeri 1 Makassar who were selected using purposive sampling technique. The results of the study revealed that generally students make their lifestyle an effort to form an image. In addition, students seem extravagant and still depend on their parents in fulfilling their desires. Peers influence the formation of lifestyle through factors of imitation, suggestion, and sympathy. The negative impact in the formation of a lifestyle is a decrease in student achievement and motivation, changes in lifestyle that tend to be materialistic, and the formation of a pragmatic lifestyle. The conclusion of this research is that the influence of peer relations has a big impact on the student's lifestyle, so that it has more negative impacts.
Keywords: Lifestyles, Peers.