bluuebunny/crossref_metadata_2025_split huggingface dataset:
PERAWATAN DAN PERBAIKAN MESIN SEKRAP ONAK TYPE L-350 DI LABORATORIUM PEMESINAN FT-UNP
Authors: Anggi Anggi , Jasman Jasman , Purwantono Purwantono , Indrawan Eko 
Published: June 2022

Laboratorium Pemesinan Jurusan Teknik Mesin FT-UNP, terdapat alat-alat dan mesin-mesin yang cukup lengkap dalam mendukung kegiatan praktikum pemesinan. Salah satu jenis mesin yang terdapat di Laboratorium Pemesinan Jurusan Teknik Mesin FT-UNP, yang kondisinya banyak mengalami gangguan atau kerusakan adalah Mesin Sekrap Onak Type L-350 No. M5 2402. Mesin ini mengalami kerusakan pada komponen kopling, tollpost, eretan vertikal dan horizontal meja. Tujuan penelitian tugas akhir ini untuk melakukan perawatan dan perbaikan mesin sekrap meliputi beberapa tahapan, yaitu mengidentifikasi kerusakan pada mesin sekrap, melakukan perbaikan dan pergantian komponen pada mesin sekrap, dan pengujian mesin sekrap. Hasil dari perawatan dan perbaikan mesin sekrap dapat diproleh; (1) Komonen kopling mesin sekrap dalam mekanisme operasional sebagai penghubung dan pemutus daya atau putaran dari motor utama menuju sistem transmisi mesin sekrap dapat bekerja secara efektif. (2) Mekanisme operasi komponen toolpost mesin sekrap Onak Type L-350 No. M5 2402 secara vertikal dapat berlansung secara normal, dimana pada saat digerakan melalui handle penggerak manual komponen toolpost terasa lebih ringan dan presisi dalam dimensi skala ukuran penyayatan berdasarkan hasil pengujian yang telah dilakukan. (3) Proses mekanisme gerakan meja eretan secara vertikal maupun horizontal dapat berlansung dengan ringan dan presisi ketika operasi penyayatan.
PERSEPSI SISWA MENGENAI PEMBELAJARAN PDTM DALAM MASA PANDEMI COVID-19 KELAS X TEKNIK PEMESINAN SMK NEGERI 5 PADANG
Authors: Anggriyanto Steven Thomas , Indrawan Eko , K Arwizet , Syahri Budi 
Published: June 2022

Dunia pendidikan sekarang ini sedang mengalami keterpurukan yang disebabkan oleh pembelajaran yang dilakukan secara daring atau dalam jaringan karna pandemi Covid-19. Banyak siswa yang mengeluhkan atau tidak paham terhadap materi yang disampaikan oleh guru. Salah satu permasalahan yang dialami yaitu pada mata pelajaran PDTM. Masalah dalam penelitian ini adalah tentang persepsi siswa mengenai pembelajaran PDTM dalam masa pendemi Covid-19 kelas X Teknik Pemesinan SMK Negeri 5 Padang, sehingga perumusan masalah dalam penelitian ini yaitu bagaimana persepsi siswa mengenai pembelajaran PDTM dalam masa pendemic covid-19 kelas X Teknik Pemesinan. Penelitian ini bertujuan untuk melihat persepsi siswa pada pembelajaran PDTM. Penelitian ini didasari observasi peneliti pada masa pandemi Covid-19 untuk mencari tahu persepsi siswa pada pelajaran tersebut. Penelitian ini termasuk metoda deskriptif dengan pendekatan kuantitatif. Penelitian ini mengumpulkan data dengan menggunakan kuesioner (angket penelitian). Penelitian dilakukan di SMK Negeri 5 Padang menggunakan teknik Porpuse Sampling pada kelas X TPM. Hasil penelitian diperoleh Pada variable persepsi didapatkan nilai persentase dari hasil data angket dengan sampel sebanyak 67 responden 19 item pernyataan dengan skor 1-5, capaian responden didapatkan nilai sebesar 74%. Persepsi siswa mengenai pembelajaran PDTM dalam masa pandemi covid-19 dapat dikategorikan Cukup dengan melihat hasil persentase dari capaian responden yang di dapat melalui angket.
KONTRIBUSI GURU MENINGKATKAN KREATIVITAS SISWA DALAM PROSES PEMBELARAJARAN PADA MATA DIKLATDASAR-DASAR MESIN KELAS X DI SMK PENERBANGAN (SPAN) PADANG
Authors: Pratama Vikri Resvi , Purwantono Purwantono , Indrawan Eko , Rahim Bulkia 
Published: June 2022

Kurangnya kontribusi guru dalam peningkatan kreativitas siswa pada proses pembelajaran mata diklat Dasar-dasar Mesin di SMK Penerbangan (SPAN) Padang.Tujuan penelitian ini untuk mendiskripsikan kotribusi guru dalam meningkatkan kreativitas siswa.Kontribusi guru dalam meningkatkan kreativitas siswa dalam proses pembelajaran pada mata diklat Dasar-dasar Mesin kelas X di SMK Penerbangan (SPAN) Padang. Pelaksanaan penelitian ini dilakukan pada tahun ajaran 2021/2022. Data pada penelitian ini dianalisis berdasarkan analisis deskripsi dan analisis statistik deskriptif menggunakan teknik total sampling. Hasil penelitian ini pada proses peningkatan kreativitas kontribusi guru terhadap siswa dalam proses pembelajaran mata diklat Dasar-dasar Mesin dengan frekuensi 18 siswaberada pada kategori sangat baik dengan presentasi 45%, pada kategori baik dengan jumlah siswa 21 orang diperoleh persentasi 52,5% dan pada kategori cukup baik dengan jumlah 1 siswa diperoleh persentasi 2,5%.Untuk penerapan metode kontribusi guru pada mata diklat Dasar-dasar Mesin berada pada kategori sangat baik dengan frekuensi 24 siwa diperoleh persentasi 60 %, sedangkan pada kategori baik dengan frekuensi 13 siswa diperoleh persentase 32,5% dan kategori cukup baik dengan frekuensi 3 siswa diperoleh persentase 7,5%. Untuk kreativitas siswa pada pembelajaran mata diklat Dasar-dasar Mesin berada pada kategori sangat baik dengan frekuensi 15 siswa diperoleh persentase 37,5%, sedangkan kategori cukup baik dengan frekuensi 4 siswa diperoleh 10 %. Dari hasil pengujian yang telah dilakukan bisa disimpulkan bahwa kontribusi guru dalam peningkatan kreatifitas siswa dalam proses pembelajaran pada mata diklat dasar-dasar mesin kelas X di SMK Penerbangan (SPAN) Padang berada pada kategori baik.
PENERAPAN SOFTWARE INVENTOR UNTUK MENINGKATKAN HASIL BELAJAR PADA MATA DIKLAT GAMBAR TEKNIK MANUFAKTUR KELAS XI SMK NEGERI 1 BUKITTINGGI
Authors: Andika Yoga , Refdinal Refdinal , Nurdin Hendri , Primawati Primawati 
Published: June 2022

Pembelajaran Gambar Teknik Manufaktur sering dilakukan menggunakan cara konvensional sehingga minat siswa dalam belajar tergolong rendah. Penelitian ini bertujuan untuk menambah minat peserta didik dalam pembelajar dengan cara menerapkan software Inventor. Penelitian yang dilaksanakan menggunakan metode kuantitatif Quasi Experiment design berfugsi untuk melihat hasil dari belajar peserta didik melalui pre-test maupun post-test kelas experiment dan juga kelas control. Penelitian ini dilaksanakan pada SMK Negeri 1 Bukittinggi menggunakan metode Sampling Porpuse pada kelas XI jurusan Teknik Mesin. Pengujian pada uji hipotesis ini adalah uji Independent Sampel T-test diperoleh nilai sig (2 tailed) pada kelas experiment dan kelas control sebesar 0,000, yaitu ≤ 0,05. Kemudian diperoleh nilai dari thitung 6,894. Sedangkan taraf signifikan ttabel 0,05 dengan df sebanyak 60 diperoleh 2,65748. Dapat disimpulkan bahwa thitung > ttabel (6,894 > 2,65748). Pengujian dari nilai N-Gain yang diperoleh dari penerapan software Inventor sebesar 0,453 atau 45,3% yang berarti penerapan dari software Inventor efektif jika diterapkan karena nilai yang diperoleh dari rata-rata standard N-Gain yaitu 0,453 ≥ 0,30. Hasil analisis dari uji t dan uji nilai N-Gain,maka diperoleh bahwa terdapat kenaikan signifikan pada hasil belajar peserta didik menggunakan software Inventor dibandingkan dengan media konvensional. Hasil dari analisis tersebut menunjukkan bahwa penerapan dari software Inventor efektif digunakan sebagai media dalam pembelajaran Gambar Teknik Manufaktur.
Unconventional interventions on redeveloping unused urban landscapes based on social interactions
Authors: Prochnow Simone Back , Čibik Miroslav 
Published: June 2022

Abstract
In urban landscape, we are increasingly encountering the phenomenon of forgotten places, open areas without function, which were created by sanitation of unpromising objects or influence of various other external factors. We mostly talk about so-called mid-blocks and inner pavilion places which are open free spaces between two elements of a building, or empty areas between two or more separate objects without mutual connection. Thus, undeveloped places in the already standing continuous development which are intended to be reconstructed. This would be the most suitable solution from the point of view of a certain urban concept of the city because the original development would be supplemented and a meaningful urban structure would be created again. However, over time, it is not always easy and possible to redevelop all these places. In this case, it is necessary to think of a new function that would partially replace the original one. As part of green infrastructure and urban planning, municipalities often integrate various green solutions into these places which encourage their residents and users to spend their free time meaningfully in them. In the long run, these solutions are probably the best possible alternative to the above-mentioned supplementation of urban structures. However, it does not always have to be an expensive and sophisticated design but sometimes only a small short-term intervention based on a deeper developed idea called “bring back function” will suffice. The paper describes unconventional interventions to the places without function and seeks their connection with users in the context of social interaction.
Toxic and allergenic plant species in primary school yards of Zagreb’s Lower Town district
Authors: Kušen Mihael , Stura Lara , Purgar Dubravka Dujmović , Poje Miroslav , Židovec Vesna 
Published: June 2022

Abstract
The green infrastructure of Zagreb’s Lower Town is made up of row-planted trees and green spaces within blocks of buildings. All schools are surrounded by green spaces that have a positive impact on the environment. Although most green spaces contribute to improving the quality of life, they also contain toxic and allergenic species which are potentially hazardous, particularly to children. This paper aims to make an inventory of plant species in the environment of primary schools in Zagreb’s Lower Town district, and to determine the presence of toxic and allergenic species. The field research was conducted from March to the end of May 2021 at 7 primary school locations. 13 either annual or biennial plant families were catalogued. In total, 34 species of herbaceous perennials and geophytes, and 36 species of trees from 17 plant families were listed. A total of 38 species of shrubs and climbers were found. Also, a total of 35 poisonous and 28 allergenic plant taxa are planted in the green spaces surrounding primary schools. The most common poisonous species found are Hedera helix and Taxus baccata, and Ilex aquifolium, a highly poisonous species, was also found. No moderately poisonous species have been found at all. As far as allergenic species are concerned, school environments are dominated by those that produce low and moderate levels of pollen concentration in the air. Species that produce high levels of pollen concentration (e.g., Betula pendula, Robinia pseudoacacia, etc.) are the least represented ones, while species that produce a very high concentration of pollen have not been recorded in any of the localities.
Acoustic telemetry data on lake-migratory brown trout, Salmo trutta lacustris L., behavior in Lake Hańcza, northeastern Poland, within one year of release
Authors: Mierzejewska Katarzyna , Dynowski Piotr , Stańczak Katarzyna , Stabiński Robert , Woźniak Małgorzata , Kozłowski Krzysztof , Lejk Adam M. , Kapusta Andrzej 
Published: June 2022

Abstract
The poor results of lake-migratory brown trout, Salmo trutta lacustris L., restoration in Lake Hańcza Nature Reserve prompted undertaking the current study that sought to verify if hatchery-reared fish age 2+ can survive the critical period of acclimation and remain in the lake. Thirty-one individuals were tagged with coded acoustic transmitters and observed for 317 days. This method helped to analyze: 1) the spatial behavior of tagged fish for one year following their release; 2) the possible differences in the behavior of fish released in various places habitually used for stocking. By the end of study, 6.5–12.9% of the tagged fish remained in the lake. The most interesting phenomenon the data indicated was the trout behavior in late spring and early summer, when the fish moved vigorously along the longitudinal axis of the lake continuously for several weeks. The reasons for the fish movements observed in Lake Hańcza were not clear. For this unique species/population it is important to determine whether such behavior is typical of this fish also in other water bodies and if it is only seen in hatchery-reared fish aged 2+ and 3+.
Teaching Sustainability: A Study of Teachers and Conceptual Tensions
Authors: Holfelder Anne-Katrin 
Published: June 2022

Abstract
Teaching sustainability topics puts teachers in a tense relationship: on one hand, they should convey the importance and urgency of the topic, but at the same time, this should be done in such a way that students can form their own judgements. In addition, teachers may themselves become privately involved and interested in the topic, which requires a professional understanding of their role. This concern was pursued in the present study. Teachers who teach sustainability topics were interviewed in semi-structured interviews. This article presents the results by means of case studies that show three contrasting cases. There are two ways of avoiding the tensions and one that takes the tension as an inherent part of the topic.
Education for Sustainable Development, Curriculum Reform and Implications for Teacher Education in a Small Island Developing State
Authors: Clark Keriffe R. 
Published: June 2022

Abstract
Education for Sustainable Development (ESD) has been identified as a viable means of securing a sustainable present and future. However, the existing body of literature related to Sustainable Development (SD) and ESD varies. Additionally, there is a paucity of studies conducted within the context of the Small Island Developing States (SIDS) such as Jamaica which are unique in their biodiversity, culture, economy and society. As a member state of the United Nations, Jamaica is expected to devise and implement strategies towards SD, guided by the 17 Sustainable Development Goals (SDGs). However, there is a need for these strategies to be contextually appropriate and relevant as efforts are pursued to engage in curriculum reform seeking to improve learnersí knowledge, values, competencies and dispositions towards sustainable lifestyles. Consequently, curriculum reform should be carefully aligned with teacher education and its implementers. With this in mind, this paper seeks to i) contextualise ESD, ii) review salient components of curriculum reforms in Jamaica and iii) proffer implications for teacher education in a small island developing state in light of ESD curriculum reforms.
If They Don’t Understand the Question, They Don’t answer. Language Mismatch in Face-to-Face Interviews
Authors: Jacobsen Jannes 
Published: June 2022

Abstract
The provision of translated field instruments is a crucial aspect to reduce response burden and subsequently increase data quality in surveys with a multi-linguistic target population such as surveys on recent immigrants. Failure to address this can result in a mismatch between the survey language and the respondent’s mother tongue. By using a survey on refugees in Germany, this article explores the correlation of the absence of the respondents’ mother tongue on item nonresponse – a crucial aspect of data quality. Further, this article investigates whether supplementary audio recordings in the same language as the written questions can reduce item nonresponse when the mother tongue is not available. To answer the research questions, all missing answers per individual are counted and analyzed by means of poisson regression analyses. In a second step, the likelihood of item-nonresponse for single items is estimated as well. Results show that a language mismatch as well as the usage of audio recordings increase item nonresponse.
Improving the Output Quality of Official Statistics Based on Machine Learning Algorithms
Authors: Meertens Q.A. , Diks C.G.H. , van den Herik H.J. , Takes F.W. 
Published: June 2022

Abstract
National statistical institutes currently investigate how to improve the output quality of official statistics based on machine learning algorithms. A key issue is concept drift, that is, when the joint distribution of independent variables and a dependent (categorical) variable changes over time. Under concept drift, a statistical model requires regular updating to prevent it from becoming biased. However, updating a model asks for additional data, which are not always available. An alternative is to reduce the bias by means of bias correction methods. In the article, we focus on estimating the proportion (base rate) of a category of interest and we compare two popular bias correction methods: the misclassification estimator and the calibration estimator. For prior probability shift (a specific type of concept drift), we investigate the two methods analytically as well as numerically. Our analytical results are expressions for the bias and variance of both methods. As numerical result, we present a decision boundary for the relative performance of the two methods. Our results provide a better understanding of the effect of prior probability shift on output quality. Consequently, we may recommend a novel approach on how to use machine learning algorithms in the context of official statistics.
Data Fusion for Joining Income and Consumtion Information using Different Donor-Recipient Distance Metrics
Authors: Meinfelder Florian , Schaller Jannik 
Published: June 2022

Abstract
Data fusion describes the method of combining data from (at least) two initially independent data sources to allow for joint analysis of variables which are not jointly observed. The fundamental idea is to base inference on identifying assumptions, and on common variables which provide information that is jointly observed in all the data sources. A popular class of methods dealing with this particular missing-data problem in practice is based on covariate-based nearest neighbour matching, whereas more flexible semi- or even fully parametric approaches seem underrepresented in applied data fusion. In this article we compare two different approaches of nearest neighbour hot deck matching: One, Random Hot Deck, is a variant of the covariate-based matching methods which was proposed by Eurostat, and can be considered as a ’classical’ statistical matching method, whereas the alternative approach is based on Predictive Mean Matching. We discuss results from a simulation study where we deviate from previous analyses of marginal distributions and consider joint distributions of fusion variables instead, and our findings suggest that Predictive Mean Matching tends to outperform Random Hot Deck.
Some Thoughts on Official Statistics and its Future (with discussion)
Authors: Tillé Yves , Debusschere Marc , Luomaranta Henri , Axelson Martin , Elvers Eva , Holmberg Anders , Valliant Richard 
Published: June 2022

Abstract
In this article, we share some reflections on the state of statistical science and its evolution in the production systems of official statistics. We first try to make a synthesis of the evolution of statistical thinking. We then examine the evolution of practices in official statistics, which had to face very early on a diversification of sou rces: first with the use of censuses, then sample surveys and finally administrative files. At each stage, a profound revision of methods was necessary. We show that since the middle of the 20th century, one of the major challenges of statistics has been to produce estimates from a variety of sources. To do this, a large number of methods have been proposed which are based on very different f oundations. The term “big data” encompasses a set of sources and new statistical methods. We first examine the potential of valorization of big data in official statistics. Some applications such as image analysis for agricultural prediction are very old and will be further developed. However, we report our skepticism towards web-scrapping methods. Then we examine the use of new deep learning methods. With access to more and more sources, the great challenge will remain the valorization and harmonization of these sources.
The Impact of Trust in Government – Young Voters’ Behavioral Intention to Use I-voting in Slovenia
Authors: Kozel Edvard , Dečman Mitja 
Published: June 2022

Abstract
In order to create public value and meet the demands of the modern information society, governments and public administrations strongly rely on information technology and e-government, but its acceptance is significantly influenced by the level of citizens’ trust in government. This study explores the issue of citizens’ trust in government in relation to i-voting in Slovenia, a country with existing interest in i-voting but a low level of trust in government, especially among the young population. The authors analyze how such distrust impacts behavior intention towards i-voting, decomposing trust into a political component and an administrative component, and into local and state levels. Based on a modified version of the Unified Theory of Acceptance and Use of Technology, the results of 194 respondents show that young student voters’ trust in politicians and electoral committees does not affect their intention to use i-voting. However, they trust the local level of government more than the state level, and electoral committees more than politicians.
Electricity Access in non-OECD Countries: Do Household Size and Composition Matter?
Authors: Strmota Marin , Ivanda Krešimir 
Published: June 2022

Abstract
Despite considerable improvements in electricity coverage, millions of people are still lacking the access to electricity. Residential electricity access is a prerequisite for numerous aspects of increased well-being and quality of life. The aim of this paper is to identify key household characteristics that are linked to the energy poverty measured as access to electricity. Literature on financial and general poverty showed mixed results on household size and characteristics as a driver of poverty. We argue that household size and proportion of children in households are key variables associated with energy poverty in developing countries with lowest levels of electricity coverage. Our research approach treats electricity access as economic good and focuses on demand side – households. By utilizing census microdata across 69 non-OECD countries, our research provides large-scale analysis on household size and characteristics as a driver of energy poverty. We found that, in majority of low-income countries, same principles for general or financial poverty apply to energy poverty which is represented by negative effect of household size and proportion of children on energy poverty.
Philosophy of Posthuman Art
Authors: Sorgner Stefan Lorenz 
Published: June 2022

Aesthetic reflections by various members of the Frankfurt school have dominated the art world for many decades. Sorgner shows that they introduced a paternalistic logic in the field of aesthetics while attempting to overcome paternalism. His art philosophical alternative reveals the option of creating non-totalitarian total works of art. The wide spectrum of posthuman artworks reveals the immense diversity of nontotalitarian total works of art.

“A deeply considered survey of the posthuman future of art. Sorgner’s philosophy of posthumanism provides a path away from the dominant 20th-century aesthetics that still inform our conception of art today. Through the innovative concept of the ‘twist,’ Sorgner’s encyclopedic text frames posthumanism as the foundation of an anti-totalitarian future of art.” Eduardo Kac
“Philosophy of Posthuman Art impressively examines the aesthetics of the monstrous, of hybridity, of smoothness and of the amorphous, to name a few. It is an articulate and informed analysis not only of particular artworks but also their philosophical underpinnings of Critical Posthumanism, Transhumanism and Metahumanism. It not only includes examples of bioart, body art, performance art and cryptoart, but also techno, digital and cyborg music. It is a time when we transition from the ontology of Being to the ontology of Becoming. We are now in a liminal age of the hybrid and the chimera. And as Stefan Lorenz Sorgner reminds us, with a twist, we have always been cyborgs.” Stelarc