bluuebunny/crossref_metadata_2025 huggingface dataset:
Monitoring of the kinetic regularities of wear of the inner surfaces of technological equipment made of structural materials operating in conditions of intense corrosion using various working media
Authors: Gadalov V.N. , Gorlov A.N. , Vornacheva I.V. , Filonovich A.V. , Makarova I.A.
Published: April 2022

The reasons for failures of technological equipment made of structural steels of long-term operation in various environments and fields of application are considered. Investigations of the failure rate and modeling of wear processes of steel equipment using regression and correlation analyzes are presented. The results of the experiment are presented in the form of polynomial kinetic wear models. The results of comparison of experimental and theoretical data on the wear rate for various types of equipment are also presented. The results of the normal distribution of the experimental values of the degree of wear for various types of equipment are shown.
Calculation of the steady-state roughness and the size of the hardened layer during vibration finishing and hardening processing with high amplitudes
Authors: Vasil’yev V.B. , Sosnitskaya T.S. , Korol’kov Yu.V. , Kohanyuk A.G.
Published: April 2022

The results of studies of the method of vibration hardening and finishing processing with high vibration amplitudes are presented. Theoretical models of such processing with classical (traditional) amplitudes are presented, which allow evaluating the surface roughness and depth of the hardened layer. Correction factors are proposed that take into account the effect of high amplitudes on the parameters of the treated surface. Based on the results of experimental studies with high amplitudes, the values of the parameters of the treated surface are determined. The dependence of the steady-state roughness of the surface and the depth of the hardened layer on the value of high vibration amplitudes is established.
Substantiation of the depth of the hardening layer of the flat surface of the workpiece during milling
Authors: Zhitnikov Yu.Z. , Zhitnikov B.Yu.
Published: April 2022

The mathematical dependence of the depth of the hardening layer of the flat surface of the workpiece when machining with a disk cutter is obtained.
Assessment of physical-mechanical and protective-decorative properties of zinc coatings obtained by electric arc spraying
Authors: Unitsky A.E. , Shibut A.A. , Tsyrlin M.I.
Published: April 2022

Described are effective methods of protecting metals from corrosion and the expediency of electric arc spraying for large-sized items outside production facilities. The hardness and strength of zinc coatings have been studied, the optimum thickness of coatings with high adhesion strength has been determined. A link has been established between laboratory studies of the adhesive strength of zinc coatings and the practical results of their application to protect the elements of transport systems. The protective and decorative properties of coatings were investigated by evaluating the corrosion resistance and porosity of the surface.
Effect of current pulse duration on the thickness and roughness of electrospark coatings
Authors: Saifullin R.N. , Galiullin R.R. , Islamov L.F.
Published: April 2022

The effect of the current pulse time on the roughness and surface continuity of the electrospark coating is studied. It is established that in the coating mode: the current pulse time is 2•10–5 s, the frequency is 250 Hz, the stress is 50 V, the roughness parameter is Rz = 80 µm, the continuity is high, but the disadvantage is the low productivity of the process.
Acoplamento de SIG e Epanet como ferramenta de apoio à decisão nas emissões de viabilidades técnicas de abastecimento de água para empreendimentos
Authors: Lira Ximenes Júnior Celso , Mendes Luna Renata , Lima Neto Iran Eduardo
Published: April 2022

O planejamento de recursos hídricos é tarefa complexa, pois envolve uma gama de atores com interesses muitas vezes conflitantes. Aliado a isso, o crescimento desorganizado das grandes cidades e a escassez hídrica levam os gestores a tomarem decisões balizadas por Sistemas de Apoio a Decisão - SADs. Nessa problemática inserem-se as Companhias de Saneamento que compõem o sistema de recursos hídricos no Ceará como uma indústria que solicita outorga de uso para tratamento e distribuição de água tratada dentro dos parâmetros exigidos por lei. Nesse contexto, o gerenciamento do sistema de abastecimento de água é um desafio para as companhias estaduais, tendo em vista que a grande malha de sua infraestrutura está enterrada. Conhecer o sistema para decidir ampliar ou dar manutenção é estratégico para a sobrevivência das companhias. Surge, assim, o Sistema de Informação Geográfica, que busca prover ao gestor público uma ferramenta de apoio à decisão. No presente trabalho, buscou-se demonstrar a aplicabilidade de tal ferramenta sob a visão de um estudo de caso de viabilização da interligação de empreendimentos particulares na Região Metropolitana de Fortaleza, por meio de acoplamento entre SIG e software hidráulico, dispondo, no final, de solução técnica para a viabilização da entrada de demanda no Sistema de Abastecimento de Água.
Palavras-chave: Sistema de Informação Geográfica. Epanet. Sistema de Abastecimento de Água. Gestão de Recursos Hídricos.
Dimensionamento de adutora e reservatório em sistemas de bombeamento de água a partir da otimização de regras de operação
Authors: Cristini Kuritza Joice , Kempka Mariane , Dai Pra Mauricio , Martin Bravo Juan , Giulian Marques Marcelo
Published: April 2022

Neste trabalho, um procedimento metodológico foi desenvolvido para uma tipologia genérica de sistema de bombeamento. Foram avaliadas 96 possibilidades geométricas para esse sistema a partir da combinação de diferentes alturas geométricas, comprimentos e diâmetros. Foram estudados 3 perfis de curva de consumo, com 4 volumes de consumo diário distintos para início e horizonte de projeto. O algoritmo Shuffled Complex Evolution foi empregado para obter a regra de operação otimizada, e a função-objetivo foi formulada para representar os custos de operação somados aos custos de instalação do sistema de bombeamento. Os resultados demonstraram que nem sempre é vantajoso o desligamento do sistema durante o período de ponta, especialmente nos casos de sistemas com elevada perda de carga. São propostos critérios de dimensionamento otimizados para o diâmetro da adutora e a capacidade do reservatório, contribuindo com a promoção da eficiência energética ainda na fase de projeto.
Palavras-chave: Sistema de bombeamento. Otimização de regras de operação. Algoritmo SCE-UA.
Simulação de desnitrificação em sistema anaeróbio-aeróbio
Authors: Martins Magalhães Taína , Cangussú Duarte Natália , Gonçalves Portela Daniella , Luiz Tonetti Adriano
Published: April 2022

A recirculação de efluente nitrificado para reatores desnitrificantes em sistemas anaeróbios-aeróbios pode implicar na melhora do tratamento de esgotos. Nesse sentido, este estudo avaliou experimentalmente o efeito da razão DQO/N-NO3- na desnitrificação em reator UASB e, a partir dos resultados e com cálculos teóricos de balanço de massa, foi estimado o efeito de diferentes razões de recirculação (R) na concentração final de nitrogênio total em um sistema teórico. Para razões DQO/N-NO3- entre 1,6 - 5,7, a eficiência de desnitrificação varia linearmente entre 31,7 ± 4,3% e 98,6 ± 0,1%, com remoção completa para razões superiores a 5,7. Com a simulação teórica, estimaram-se concentrações finais de nitrogênio total próximas a 30, 20, 15 e 10 mgL-1 utilizando razões de recirculação iguais a 1,5; 2,5; 4,0 e 6,0. Embora não avaliado, o aumento de R deve levar em consideração consequências como a possibilidade de arraste de sólidos, a redução da produção de biogás e a entrada de OD no reator anaeróbio.
Palavras-chave: Desnitrificação. Anaeróbio. UASB. Empacotado. Nitrato. Nutriente.
Investigating the effects of argument-driven ınquiry method in science course on secondary school students’ levels of conceptual understanding
Authors: Kaçar Sevinç , Balım Ali Günay
Published: April 2022

This study aimed to determine the effects of the argument-driven inquiry learning method on students’ conceptual learning in science education. The study is conducted with embedded mixed-methods research design from mixed research methods. The study was conducted with 64 7th-grade students consisting of 31 students in the experimental group and 33 students in the control group from a public school in the Aegean Region in Turkey. The unit “electrical energy” was taught using the argumentdriven inquiry learning method in the experiment group, and the 2013 science curriculum and activities in the control group. The quantitative data collection tool used in this research was the “Conceptual Learning Test” while the qualitative data collection tools used were daily student reflections, research observation notes. To determine students’ conceptual learning, of non-parametric tests, the Wilcoxon Z test was used for withingroup comparisons and the Mann-Whitney U test was used to compare groups. For qualitative data analysis, descriptive analysis and content analysis were used based on the situation. According to the analysis of data, a significant difference in favor of the experiment group was observed in students’ conceptual learning. The reason for the positive change in experiment group students’ conceptual understanding was that the method presents an opportunity for students to explore information (the conceptual relationships by exploring the effects of the variables within the cases), discuss information within the group and out-group peers, and structurize. In conclusion, the current study might contribute to using the argument-driven inquiry learning method in a science course to literature and shed light on new studies.
What does black-body radiation mean for pre-service physics teachers?
Authors: Bezen Sevim , Aykutlu Işıl , Bayrak Celal
Published: April 2022

This study aims to determine pre-service teachers’ conceptual understanding of black-body radiation. Designed as a qualitative study, it was realized by employing a case study, which is one of the descriptive research methods. The study group consists of 18 pre-service teachers enrolled as seniors. An opinion form and a concept map were used as data collection tools. In other words, results were intended to be comparatively examined by using two different qualitative data collection methods. Pre-service teachers’ answers were analysed with the help of answer sculptures. At the end of the study, it was determined that while pre-service teachers generally have the correct conceptual structure, they still have some specific points. It was seen that pre-service teachers have problems with understanding especially the Wien law and electromagnetic radiation taking place in black-body radiation.
Aktivitas Antibakteri Kitosan dari Tulang Rawan Cumi-Cumi (Loligo sp.) Terhadap Bakteri Staphylococcus aureus dan Escherichia coli
Authors: Nadia Laode Muhamad Hazairin , Ode Huli La , Nilda Arifiana Effendy Waode , Jonas Rieuwpassa Frets , Imra Imra , Nurhikma Nurhikma , Cahyono Eko
Published: April 2022

Squid (Loligo sp.) is one of fisheries commodities export in Indonesia. Squid has cartilage that can be utilized in the food and non-food sectors. The inner skin of the squid cartilage contains chemical compounds are chitin and chitosan. The objectives of this research are to produce chitosan from squid cartilage and tested the antibacterial effectiveness of chitosan in bacteria Staphylococcus aureus and Escherichia coli. The research method was carried out in twophase; the manufacturing phase of chitosan from squid cartilage and the testing phase for the antibacterial activity of chitosan. The results of the first phase of this study indicate that the chitosan produced meets the quality standards of chitosan with water content 7.82% (bk), ash content 0.57% (bk), nitrogen content 3.18% (bk) and degree of deacetylation 87.43%. Further more the results obtained in the second phase showed that the higher of chitosan concentration, the greater of inhibition zone in the tested bacteria. The best antibacterial activity was found at 0.8% chitosan concentration, with an inhibition zone of 12.8 ± 0.06 mm in E. coli and 11.1 ± 0.12 mm in S. aureus. At a concentration of 0.8% showed a greater inhibitory value when compared to 70% alcohol.
Smart Label Based on Red Cabbage Extract (Brassica oleracea) as an Indicator of Freshness of Tuna Fillets at Chiller Temperature
Authors: Silvia Deli , Ishaq Anisah Nur Nabilah , Prastiwinarti Wiwi
Published: April 2022

Tuna fillets are considered good media for the growth of microorganisms because it contains a high protein level. In order to determine the rottenness of the tuna fillet, smart packaging is needed. Research has been carried out on making smart labels based on red cabbage extract as an indicator of the freshness of tuna fillets at chiller temperatures. The purpose of this research was to find the best pH variation of red cabbage extract for use as a tuna fillet indicator label. The indicator labels were made with variations in pH 2, 5, 8, and 11. The tests conducted in this research including mean RGB labels, pH tests, and organoleptic tuna fillets. This research used a Completely Randomized Design (CRD) method which consists of two repetitions for each test. The test was carried out for 8 days and tested every 2 days. From this research, it was found that the pH 2 label was the best pH variation to monitor the freshness of tuna fillets. The color change of the label occurred on the 4th day when the mean RGB label pH 2 was 168.802 ± 1.093 and the pH of the tuna filet was 6.11 ± 0.16. The organoleptic score had exceeded the sensory limit on day 4 of all parameters with the appearance, smell, and texture scores being 3.8 ± 1.0, respectively; 4.6 ± 0.8; 4.8 ± 1.4. The pH 2 label was chosen since there was a color change from pink to purple when detecting spoilage in tuna fillets.
Karakteristik Saus Jeroan Cumi-Cumi dengan Penambahan Karagenan Sebagai Stabilizer
Authors: Pratiwi Chindya Lucky , Lestari Susi , Widiastuti Indah
Published: April 2022

Utilization of squid (Loligo sp) viscera waste with high levels of production and consumption of squid in the community. This study aims to determine the characteristics of squid (Loligo sp) viscera sauce with the addition of carrageenan as a stabilizer. This study used a randomized block design for parametric statistical data analysis and Kruskal-wallis method for non-parametric statistical data analysis. In this experiment, there were 4 treatments with 3 replications. The parameters used consisted of chemical parameters (moisture content, ash content, protein content, and carbohydrate content), physical analysis (viscosity and total dissolved solids) and sensory analysis (appearance, aroma, taste and consistency). The results showed that the squid viscera sauce with the addition of carrageenan had a significant effect on moisture content, ash content, protein content, carbohydrate content, viscosity and total dissolved solids. The sensory analysis results showed that the treatment had a significant effect on the appearance and consistency values, but had no significant effect on smell and taste values of the resulting squid viscera sauce.
Agresi Militer Belanda di Wilayah Batu Pujon 1947-1948: Sebuah Kajian Sejarah Lokal
Authors: Mahardika Moch. Dimas Galuh
Published: April 2022

Abstrak: Peristiwa yang menandai periode 1945-1950 adalah Agresi Militer I dan II oleh pemerintah Belanda dengan mengerahkan berbagai divisi militer sebagai upaya merebut kembali tanah jajahan. Keinginan besar Belanda untuk mendapatkan kekuasaan kembali atas Indonesia setelah proklamasi merupakan salah satu bentuk ancaman nyata yang harus dihadapi oleh bangsa Indonesia. Dengan dalih "Aksi Polisionil", tentara Belanda melakukan aktifitas militer di wilayah Indonesia, sekaligus melanggar perjanjian yang telah disepakati sebelumnya. Gejolak di berbagai daerah mulai muncul, salah satunya terjadi di wilayah Batu-Pujon. Monumen status quo lijn di daerah Pujon menjadi simbol batas pendudukan Belanda dan wilayah Republik. Pertempuran yang terjadi di wilayah Batu-Pujon merupakan salah satu dari sekian banyak pertempuran yang terjadi selama periode Agresi Militer. Artikel ini ditulis dengan menggunakan metode penelitian sejarah untuk menceritakan peristiwa Agresi Militer Belanda dalam konteks sejarah lokal wilayah Batu- Pujon.Kata Kunci: Agresi, Militer, Belanda, Batu, Pujon, TNI.Abstract: One of the events marking the period 1945-1950 was the Military Aggression I and II which deployed many military divisions in an effort to fight for independence in the regions. The Dutch' great desire to regain control of Indonesia after the proclamation is one form of real threat that must again be faced by the Indonesian nation. Under the pretext of "Police Action", the Dutch soldiers carried out military activities while violating a previously agreed agreement. Turmoil in various regions began to appear, one of them in the Batu-Pujon region which is one of the highlands and flanked by several mountains. The status quo monument in Pandesari area became a symbol of the boundaries of dutch occupation and Republic territory. The battle that took place in the Batu-Pujon region was a small battle that took place during the Military Aggression. This article written by using the historical research methods try to explain the history of Dutch Military Agression in the local history context of Batu-Pujon region. Keywords: Agression, Batu, Pujon, Indonesian, National, Army.
Firmas de REE en intrusivos asociados a pórfidos de cobre en Sonora
Authors: Santillana Villa Cecilia , Valencia-Moreno Martín , Ochoa-Landín Lucas , Del Río-Salas Rafael
Published: April 2022

Las firmas de REE en muestras de rocas plutónicas en cinco sistemas de pórfido de cobre en Sonora, sugieren que existe un proceso petrogenético a partir del enfriamiento de un plutón principal que genera columnas de magma de textura porfídica emplazada en niveles más someros de la corteza. Esto es revelado por una aparente inversión en la polaridad de la anomalía de europio en los patrones normalizados de REE. En general, los patrones muestran una pendiente enriquecida en LREE, con una anomalía negativa de europio bien desarrollada en el caso del plutón principal. Las firmas de los intrusivos asociados con la mineralización son muy similares, a excepción de que la anomalía de europio se hace menos negativa e incluso positiva. De acuerdo con los modelos existentes, esto puede explicarse considerando que hay un fraccionamiento importante de hornblenda durante la generación del stock porfídico, tal vez en condiciones magmáticas más reductoras.
Agente Lixiviante alterno al cianuro para minerales refractarios de telururo de oro
Authors: TERÁN-BOJÓRQUEZ DIANA GABRIELA , ALONSO-GONZÁLEZ OMERO , SANTOS-MUNGUÍA PERLA C , ELIZONDO-ÁLVAREZ MARTHA A , BELLO TEODORO SIMON
Published: April 2022

Los minerales de telururo de oro son refractarios a la cianuración convencional, por lo que para su procesamiento requieren de un tratamiento previo, o el uso de agentes lixiviantes alternos al cianuro. La creciente presencia de los telururos de oro, ha creado la necesidad de buscar nuevas alternativas para el tratamiento de este tipo de minerales. En este trabajo se propone un proceso de extracción empleando ácido de Caro como pre oxidante del mineral para una posterior cianuración convencional. Para esto, se utilizó un mineral de telururo de oro, ya cianurado con anterioridad, con presencia de calaverita (AuTe2). Se encontró que el ácido de Caro es un efectivo agente lixiviante, produciendo una disolución ácida directa y permitiendo la obtención de valores de oro que se consideraban no recuperables.
Power Quality Improvement of Photovoltaic Distributed Generation System using Artificial Neural Network for Environmental Preservation
Authors:   National Institute of Technology Delhi, New Delhi, India., Agarwal Anshul , Singh Shubham Kumar ,   National Institute of Technology Delhi, New Delhi, India., Kanumuri Tirupathiraju ,   National Institute of Technology Delhi, New Delhi, India., Kumar Harish ,   National Institute of Technology Delhi, New Delhi, India.
Published: April 2022

Most of the economies are emerging with the growth in the renewable energy system. A solar photovoltaic system is one of the good sources of energy among them which provides clean and green energy. As it adds less pollution to the environment and hence advancement in technology of renewable energy system adds great effect on the environmental preservation. This paper describes a 1-ф photovoltaic distributed generation system having enhanced power quality features. Initially, the system has been implemented by using pulse width modulation-based switching schemes for the smooth control of the power flow between photovoltaic system, grid, and non-linear load. The system involves nonlinear current compensation and capacitor voltage balancing along with maximum power point tracking. Using this model, sample data has been collected for the training and testing of artificial neural networks. The artificial neural network was trained using the scaled conjugate gradient approach. The response of the neural network provides an estimated reference current for the controller to enhance power quality features. The inverter used in this work also acts as a shunt active power filter during night time. The system’s result is simulated and validated through MATLAB/Simulink.
Disambiguation of Catalytic Converter with Fluid Compounds using Automation and Reducing Cold Start Time with PCM
Authors:   Mechanical Engineering Department, Amity University Uttar Pradesh, India., Bhandwal Mohit , R K Tyagi ,   Mechanical Engineering Department, Amity University Uttar Pradesh, India.
Published: April 2022

Pollution is the biggest problem in today’s world. Cars are the primary source of air pollution. They emit harmful gasses into the environment like HC, NO, and CO with hazardous health effects. To reduce the pollution cars are assembled with catalytic converter which works on chemical reactions. Due to the continuous use or gasket oil leak, the efficiency of the catalytic converter decreases. The aim of this research is to clean the catalytic converter using different fluid compounds (gaseous elemental compound, Acidic, Alkaline and Water based). For pressurized cleaning, an automatic system was developed which can be fitted before the catalytic converter. The phase change material (PCM) is used to maintain the temperature after the shut of engine which reduces the cold start time. Experimental setup is fabricated, and comparative study was done. Based on the experimental results it was observed that the best performance is obtained when the converter is cleaned with the acidic compound. After continuous use of acidic compound, the catalytic converter gets eroded, so only air and water should be used for pressurized cleaning. Furthermore, the decrease in the level of NO, CO, and HC by 16%, 54%, and 83% respectively was observed during the cold start time. The time was reduced for the cold start from 150 seconds to 75 seconds using the PCM material.
Current trends in Slovak geography
Authors: Mazúr Emil
Published: April 2022

The development of modern Slovak geography started in the Forties of our century. Geographers engaged in research in Slovakia exceed the number of 100. The voluminous scientific production has amounted to over 1200 papers and 70 books. The most remarkable work is the Atlas of the SSR (1980). The present trends in Slovak geography aim at a system based on the landscape research, the understanding of the developmental regularities of territorial structures, landscape potential, environmental problems, and on setting up geographical prognoses.
The 90th birthday anniversary of Professor Jaromír Korčák, Laureate of the Order of Labour
Authors: Häufler Vlastislav
Published: April 2022

Professor Jaromír Korčák [born on July 12, 1895 in Vražné, Svitavy distr.), the nestor of Czechoslovak geographers celebrated his 90th birthday anniversary. He was professor at the Charles University, chairman of the Czechoslovak Geographical Society of the Czechoslovak Academy of Sciences, chairman of the National Geographical Committee, editor of the Journal of the Czechoslovak Geographical Society. He is the author of many books on social and economic geography and demography, the list of which was published in this journal in between 1965-1980. At present, professor J. Korčák lives in retirement in Prague. He is still active in the geographical science as well as demography.
URGENSI REVITALISASI KREDIT USAHA RAKYAT (KUR) UNTUK PEMULIHAN EKONOMI PASCA PANDEMI COVID-19
Authors: Mawesti Dia
Published: April 2022

Usaha Mikro Kecil, dan Menengah (UMKM) merupakan salah satu sektor yang paling terpukul akibat pandemi Covid-19. Pembatasan sosial dan perlambatan roda perekonomian berdampak langsung pada merosotnya produksi dan penjualan yang mengancam keberlangsungan usaha. Sebagai sektor yang memiliki posisi strategis dalam struktur perekonomian nasional, UMKM juga masih menghadapi tantangan akses terhadap permodalan, terlebih di era pandemi Covid19. Kredit Usaha Rakyat (KUR) sebagai instrumen pemberdayaan UMKM perlu menjadi prioritas dalam skema kebijakan untuk merespon dampak dari situasi pandemi. Pemerintah telah mengeluarkan kebijakan restrukturisasi kredit untuk membantu UMKM bertahan melewati masa pandemi. Meski demikian, pemerintah juga perlu melakukan intensifikasi dan ekstensifikasi penyaluran Kredit Usaha Rakyat (KUR) untuk mendorong akselerasi pemulihan ekonomi rakyat pasca pandemi.
Kebijakan Work From Home Era Covid-19: Kasus Kabupaten Badung
Authors: Agus Sugianto Made
Published: April 2022

Pandemi Covid-19 mendorong Menteri Pendayagunaan Aparatur Sipil Negara dan Reformasi Birokrasi RI mengeluarkan Surat Edaran Nomor 67 Tahun 2020 tentang Perubahan Atas Surat Edaran Menteri PANRB Nomor 58 Tahun 2020 tentang Sistem Kerja Pegawai Aparatur Sipil Negara (ASN) dalam Tatanan Normal Baru. Dalam sistem kerja baru ini ASN dapat bekerja di kantor maupun di rumah (work from home/WFH) berdasarkan kategori zonasi risiko kabupaten/kota. Dalam implementasinya, kebijakan WFH memiliki sisi positif dan sisi negatif. Sebagian ASN menilai WFH sebagai peluang untuk bekerja secara lebih fleksibel serta bisa lebih dekat dengan keluarga, namun disisi lain ASN justru semakin tidak produktif selama penerapan WFH. Hal ini terjadi karena tidak semua pegawai memiliki fasilitas penunjang yang memadai untuk melakukan WFH dan tidak semua pekerjaan dapat dikerjakan dari rumah. Supaya pelaksaan WFH efektif, setiap ASN diwajibkan menyusun rencana kerja serta melaksanakan tugas kedinasan sesuai dengan sasaran dan target kinerja. Setiap ASN juga diharuskan membuat laporan hasil kerja secara berkala, yang ditujukan kepada pimpinan unit kerja.
Strategi Produktivitas Penyuluhan Perikanan pada Masa Pandemi
Authors: Sudrajat Cece
Published: April 2022

Penyuluh Perikanan bekerja di lapangan, melakukan kegiatan pendampingan pelaku utama Kelautan dan Perikanan. Tugas tersebut menuntut Penyuluh Perikanan bertemu dengan banyak orang dan memerlukan mobilitas tinggi. Di sisi lain, sejak Maret 2020 sampai saat ini Indonesia dilanda pandemi Covid-19. Pemerintah dan sebagian Pemerintah Daerahmengeluarkan kebijakan Pembatasan Sosial Berskala Besar (PSBB), Penerapan Pembatasan Kegiatan Masyarakat (PPKM), dan Kebijakan Work Form Home (WFH) bagi ASN. Akibatpandemi, kebijakan PPKM dan WFH membuat gerak Penyuluh Perikanan terbatas, target IKU banyak yang tidak tercapai, sehingga capaian kinerja Penyuluh Perikanan menurun. Contohnya, kinerja Penyuluh Perikanan tahun 2020 di Provinsi Banten, DKI Jakarta dan Jawa Barat sejumlah 104 orang (51%) berkinerja cukup bahkan kurang. Tulisan ini merupakanstrategi bagi Penyuluh Perikanan agar tetap produktif di masa pandemi. Strategi yang digunakan adalah penyuluhan secara tak langsung melalui pemanfaatan TI seperti medsosWhatsapp, Telegram, Youtube, Facebook, dan aplikasi pertemuan Zoom. Materi penyuluhan dibuat jelas dan singkat agar dapat dikirim melalui medsos.
IMPLEMENTASI KEBIJAKAN UJI KOMPETENSI JABATAN FUNGSIONAL WIDYAISWARA DI ERA PANDEMI
Authors: Tunsiah Siti
Published: April 2022

Lembaga Administrasi Negara (LAN) telah mengeluarkan Peraturan LAN Nomor 5 Tahun 2021 tentang Uji Kompetensi Widyaiswara sebagai pengganti Peraturan LAN Nomor 9 Tahun2018 dan Peraturan Kepala Lembaga Administrasi Negara Nomor 14 Tahun 2017. Penelitian ini bertujuan untuk mengetahui bagaimana implementasi kebijakan terbaru mengenaipenyelenggaraan uji kompetensi kenaikan jenjang jabatan widyaiswara mengacu kepada teori implementasi kebijakan Edward III, terutama pada saat pandemi Covid-19 yaitu komunikasi, sumber daya, disposisi, dan struktur organisasi sebagai komponen yang relevan dalam mengukur implementasi kebijakan Uji Kompetensi Widyaiswara. Penelitian ini menggunakan pendekatan kualitatif dengan metode penelitian deskriptif analitis. Teknik pengumpulan data dilakukan melalui literature review yang berasal dari buku, jurnal, peraturan perundangundangan yang berlaku, dokumen evaluasi penyelenggaraan uji kompetensi, serta melalui wawancara. Hasil penelitian menunjukan bahwa implementasi kebijakan uji kompetensi sudah dilakukan dengan baik, namun beberapa hal harus diperbaiki yaitu dalam komunikasi penyampaian isi kebijakan kepada pemangku kepentingan, dan peningkatan sumber daya terutama ketersediaan anggaran untuk penyelenggaraan uji kompetensi.
SINGLE PARENT AKIBAT PANDEMI COVID-19: URGENSI PEMBERDAYAAN EKONOMI DAN PELATIHAN PARENTING
Authors: Pravita Yuliani Vani , Tendriana Gine
Published: April 2022

Pandemi Covid-19 berdampak pada semua aspek kehidupan masyarakat, tidak terkecuali meningkatnya jumlah perempuan yang menjadi kepala keluarga karena suaminya meninggaldan bertambahnya jumlah laki-laki yang juga berperan sebagai ibu akibat istrinya wafat terpapar Covid-19. Kondisi tersebut, yang akhirnya memunculkan single parent baru, tidak dapat diabaikan jika merupakan keluarga pra sejahtera dan memiliki anak yang berusia di bawah umur. Solusi nyata sangat diperlukan demi kelangsungan hidupnya. Kementerian/Lembaga/Pemerintah Daerah, swasta, komunitas, dan masyarakat perlu bersinergi dalam pendataan, pemberian bantuan, pendampingan bagi keluarga pra sejahtera tersebut dengan tidak melupakan pengawasan dan evaluasi.
A Systematic Review of Ensemble Techniques for Software Defect and Change Prediction
Authors: Khanna Megha
Published: April 2022

Background: The use of ensemble techniques have steadily gained popularity in several software quality assurance activities. These aggregated classifiers have proven to be superior than their constituent base models. Though ensemble techniques have been widely used in key areas such as Software Defect Prediction (SDP) and Software Change Prediction (SCP), the current state-of-the-art concerning the use of these techniques needs scrutinization.

Aim: The study aims to assess, evaluate and uncover possible research gaps with respect to the use of ensemble techniques in SDP and SCP.

Method: This study conducts an extensive literature review of 77 primary studies on the basis of the category, application, rules of formulation, performance, and possible threats of the proposed/utilized ensemble techniques.

Results: Ensemble techniques were primarily categorized on the basis of similarity, aggregation, relationship, diversity, and dependency of their base models. They were also found effective in several applications such as their use as a learning algorithm for developing SDP/SCP models and for addressing the class imbalance issue.

Conclusion: The results of the review ascertain the need of more studies to propose, assess, validate, and compare various categories of ensemble techniques for diverse applications in SDP/SCP such as transfer learning and online learning.
PELATIHAN STRATEGI ASSESMENT DAN PEMBELAJARAN DARING DI MASA COVID UNTUK GURU-GURU SMA SRIJAYA NEGARA
Authors: Meilinda Meilinda , Nazip Khoiron , Susanti Rahmi , Riyanto Riyanto , Anwar Yenny
Published: April 2022

Pembelajaran dan evaluasi hampir tidak berbeda sama sekali karena pembelajaran daring di masa covid yang dilakukan oleh para guru tidak lebih dari kumpulan penugasan-penugasan. Padahal evaluasi pembelajaran dilakukan dalam empat standar yaitu standar konten, standar desain pembelajaran, standar assesmen dan standar teknologi. Karena itu pertanyaan dalam penelitian ini adalah apakah pelatihan strategi assesmen pada pembelajaran daring dapat membuat guru-guru mampu membuat assesmen pembelajaran daring di SMA Srijaya Negara
PERBANDINGAN POLA ASUH BER-GENRE DEMOKRATIS PADA SISWA SDI X DAN SDN Y DI KOTA MALANG
Authors: Anzani Dessy Rif'a , Mangestuti Retno , Rahayu Iin Tri
Published: April 2022

ABSTRAK. Tujuan penelitian ini adalah untuk mengetahui perbedaan pola asuh ber-genre demokratis antara SDI X dan SDN Y. Penelitian ini dilaksanakan dengan membuat blueprint pola asuh ber-genre demokratis, yang kemudian dijabarkan dalam bentuk angket, dan kemudian divalidasi oleh 5 orang expert menggunakan metode CVR. Selain untuk mengetahui perbedaan, penelitian ini juga menjabarkan kategori pola asuh ber-genre demokratis. Berdasarkan hasil penelitian, pengkategorian pada SDI X menunjukan bahwa frekuensi terbanyak terdapat pada kategori sedang dengan prosentase mencapai 65%. Sedangkan pada kategori tinggi prosentase 12% dan kategori rendah prosentase 23%. Sedangkan pada SDN Y, frekuensi terbanyak terdapat pada kategori sedang, dengan prosentase mencapai 69%. Sedangkan pada kategori tinggi prosentse 19% dan kategori rendah prosentase 12%. Hasil uji beda menghasilkan hipotesis ditolak, yang artinya terdapat perbedaan yang signifikan antara rata-rata variable SDI X dan Variabel SDN Y. hal tersebut mengartikan bahwa aspek pola asuh ber-genre demokratis antara SDI X dan SDN Y memiliki perbedaan yang signifikan. Hasil t hitung menunujukan angka negative yang artinya nilai pola asuh ber-genre demokratis SDI X lebih rendah daripada SDN Y.
ASPEK-ASPEK PSIKOLOGI UPACARA RITUAL LALUHAN PADA MASYARAKAT DAYAK NGAJU
Authors: Anggreni Fiona , Pudjibudojo Jatie K.
Published: April 2022

Abstract. This literature study aims to explain the tradition of the Laluhan ceremony from a psychological perspective especially in the aspects of commitment and conformity of the Dayak Ngaju tribe. The Laluhan ritual is a process of delivering goods / assistance to the place where Tiwah's death party is held. Based on the beliefs of the Dayak Ngaju tribe, it will have a good impact when equipping the spirits of ancestors and families who have passed away to lewu tatau (heaven). In the process of implementing Bakas Tiwah as the customary leader in charge of conveying the types and quantities of Laluhan items to families and communities. Through Laluhan, social influence is carried out on their offspring and encourages the community to become conformists in the group to do the same thing and try to fulfill the commitment to achieve the group's goals. The Benefits of Research contribute knowledge to the public about the culture of death in Central Kalimantan.

Keywords: Dayak ngaju, Laluhan, ritual ceremony
Menulis Puisi Untuk Mereduksi Stres Pada Remaja Di SMA X Kabupaten Malang
Authors: RIH Sri Wiworo , Amalia Novi Husnatul , Kristianti Essha Paulina
Published: April 2022

Masa remaja bagi kebanyakan orang adalah masa-masa yang indah serta menyenangkan, terlepas dari semua itu remaja adalah individu yang juga rentan terhadap stres. Remaja yang merupakan masa peralihan membuatnya harus lebih beradaptasi, pertumbuhan fisik, konflik teman sebaya dan tekanan dari berbagai tuntutan pada lingkungannya dapat membuat remaja menjadi stres. Tujuan penelitian ini untuk mereduksi stres remaja melalui kegiatan menulis puisi yang dilakukan di SMA X. Populasi pada penelitian ini berjumlah 211 orang dengan sampel 10 sesuai dengan kategori Purposive sampling. Metode pengumpulan data berupa kuisoner Perceived Stress Scale 10 (PSS-10), worksheet dan dokumentasi. Metode penelitian ini menggunakan eksperimen rancangan sederhana desain within-subject  dengan teknik kontrol counterbelancing. Analisa data menggunakan uji wilcoxon signed ranks test dan menunjukkan penurunan tingkat stres pada sebelum dan sesudah menulis puisi karena nilai sig.2 tailed = 0,008< 0,05 Sehingga dapat disimpulkan hipotesis dalam penelitian ini diterima, hasil rata-rata menunjukkan kegiatan menulis puisi menurunkan 4,2% tingkat stres pada remaja di SMA dikecamatan Jabung.
So funktionieren Trommelmotoren
Authors: Flies Andreas
Published: April 2022

Wenn man Trommelmotoren im Einsatz sieht, sehen sie aus, als wären sie speziell für diese eine Förderaufgabe in der jeweiligen Maschine oder fördertechnischen Anlage maßgeschneidert. Betreiber und Instandhalter gehen deshalb davon aus, dass man diesen spezifischen Motor nur bei dem einen Hersteller beziehen kann, dessen Produkt bereits verbaut ist. Das ist jedoch weit gefehlt.
Billig in die Ferne fliegen
Authors: Schlemmer Elena , Vogl Hubert
Published: April 2022

Unzählige Airlines strauchelten beim Versuch, das Low-Cost-Geschäftsmodell erfolgreich und dauerhaft im Langstreckenluftverkehr zu etablieren. Die Corona-Pandemie mit all ihren Unwägbarkeiten scheint ein solches Vorhaben zusätzlich zu erschweren. Neueste Schmalrumpf-Langstreckenflugzeuge könnten dem Modell jedoch besonders in der Nachkrisenzeit neuen Auftrieb verleihen.
Weiterentwicklung des Geruchsmessverfahrens für Bauprodukte (Teil II): Anwendung eines Adapters und vereinfachtes Bewertungsverfahren/Further Development of the Odour Mea- surement Method for Building Products (Part II): Application of an Adapter and Simplification of the Evaluation Method
Authors: Horn W. , Plehn W. , Müller B. , Brandt Simone , Brozowski F.
Published: April 2022

Zur Weiterentwicklung der Probenpräsentation wurde ein Adapter entwickelt, der Emissionsprüfkammer und Bewertungstrichter miteinander verbindet und dadurch eine der direkten Messung vergleichbare Geruchsbewertung ermöglicht. Die analytischen Messungen zeigen, dass es kaum Unterschiede in der Zusammensetzung der Probenluft in der Kammer im Vergleich zum Probenbehälter gibt. Bei den olfaktorischen Messungen kam es jedoch bei der Bewertung der Probenluft mithilfe des Adapters zu Minderbefunden. Anschließende Untersuchungen zeigten, dass beim Ausschalten des Geräts Umgebungsluft über den Trichter in den Adapter strömt und zu einer Verdünnung der Probenluft führt. Um dies zu vermeiden, erfolgen derzeit mehr Messungen. Eine weitere Versuchsreihe wurde durchgeführt, um den Messaufwand bei der Bewertung der empfundenen Intensität zu reduzieren. Die entwickelte Größer- oder Kleiner/gleich-Abfrage kann hier hilfreich sein. Die Untersuchungen im Luftqualitätslabor und im Rahmen eines Ringversuches mit verschiedenen Laboren zeigen, dass die Abfrage in fast allen Fällen zu den gleichen Ergebnissen führt wie die normgerechte aber aufwendigere Ermittlung der empfundenen Intensität mithilfe des Vergleichsmaßstabes.

 

Summary

 

For technical improvement of sample presentation an adapter was developed to connect the emission test chamber with the evaluation funnel and thus enabling an odour assessment with a method which is comparable to a direct measurement. The analytical measurements demonstrate that the air has a very similar composition sampled at the funnel or in the emission test chamber. The results of the olfactory measurements show overall that the intensities determined using the adapter are often reported as lower. Further investigations have shown that air backflow via the funnel into the sample container of the adapter may be the cause. This has to be avoided in future.

 

Another experimental series was carried out to reduce the measurement effort of evaluation of perceived intensity. Here application of the developed ‘greater than or less than/equal to’ survey could be helpful. The results of the measurements in the air quality lab and in the frame of a round robin test indi- cate that the survey leads to the same evaluation as the more complex determination of perceived intensity with standard method.
Studie zur Korrosionsbeständigkeit von Plattenwärmeübertragern vorgestellt
Authors: Funke Matthias
Published: April 2022

Das Dresdner Institut für Korrosionsschutz hat im Auftrag der Kelvion Brazed PHE GmbH im Rahmen einer Langzeitstudie die Korrosionsbeständigkeit von Plattenwärmeübertragern untersucht – mit überraschendem Ergebnis.
Planung und Technologien von Luft/Wasser-Wärmepumpen Teil 2
Authors: Schellhorn Martin
Published: April 2022

Standen im ersten Teil dieses dreiteiligen Fachbeitrags zur Planung von Luft/Wasser-Wärmepumpen insbesondere erste Auswahlkriterien sowie die Berechnung von Heiz- und Kühllast sowie der Warmwasserbedarf im Mittelpunkt, dreht sich im zweiten Teil alles um die Berechnung des Pufferspeichervolumens sowie die richtige Planung hinsichtlich der Schallemissionen.
Zukunftsfähige Gebäude durch vernetzte Systeme
Authors: Portner Bernhard
Published: April 2022

Die Anforderungen an die Sicherheit, Umweltfreundlichkeit und Energieeffizienz von Gebäuden steigt, und auch Gesundheitsförderung und Gesundheitsschutz stehen bei Neubauprojekten und Modernisierungen immer mehr im Fokus. So genannte Green Buildings beziehungsweise Healthy Buildings sollen diesen Kriterien Rechnung tragen und gleichzeitig wirtschaftlicher sein als „herkömmliche“ Gebäude. Das geht nicht ohne moderne Technologie. Ein maßgebliches Werkzeug dabei ist die Raumautomation.
Schwachstellen und Empfehlungen für die Dokumentation
Authors: Rötlich Heinz
Published: April 2022

Die Schließung von Gebäuden und die damit verbundene Nichtnutzung der Trinkwasser-Installationen können zu Stagnationen und damit zu erhöhten Kolonie-Zahlen von pathogenen Mikroorganismen im Trinkwasser führen. Die 72 Stunden-Regel für die Entnahme von Trinkwasser an den Zapfstellen gilt grundsätzlich immer, in der Praxis wird sie bisher allerdings nicht konsequent umgesetzt.
Impact of the COVID-19 pandemic on labor markets of Arctic territories of circumpolar countries.
Authors:   Lusin Institute for Economic Studies of the Kola Science Centre of the Russian Academy of Science, Korchak Elena A.
Published: April 2022

The COVID-19 pandemic has threatened human safety and well-being, has outlined new requirements for the functioning of sectors of the economy and social sphere that directly determine the conditions of life, and has required timely comprehension of the COVID-19 pandemic consequences as part of updating the measures of social and economic support. Assessing the impact of the current crisis situation caused by the COVID-19 pandemic on the labor markets of circumpolar countries was the purpose of this study. The objectives of the study included an analysis of the effects of the COVID-19 pandemic on the economies of circumpolar countries, an analysis of governmental measures to mitigate the socio-economic consequences of the COVID-19 pandemic, an analysis of employment and unemployment rates in 2019–2020, and a rationale for the role of government in reducing social tensions in Arctic labor markets. The labor markets of regions whose territories are fully attributed to the Russian Arctic, as well as labor markets of the Arctic territories of Canada, the United States, Norway, Finland and Sweden were the object of this study. As a result of the study, it was determined that the greatest decline was observed in consumer demand-oriented sectors of the economy. It has been revealed that the labor markets have been negatively affected by the decline in the number of small and medium-sized businesses and individual entrepreneurs. The scientific novelty of the study is determined by a special assessment of the cumulative impact of the COVID-19 pandemic and governmental measures to limit its spread on employment and unemployment indicators that identify trends in Arctic labor markets. The practical significance of the study lies in the fact that its main conclusions are aimed at updating the measures of employment regulation in the labor markets of the Russian Arctic. The prospects for further research are determined by the long-term nature of the consequences of the COVID-19 pandemic for the Arctic economies and the formation of appropriate proposals and recommendations for adapting labor markets in the Russian Arctic to the emerging situation.
Іnfluence of some heavy metals to the pulmonary and direct diffusive respiration of the great ramshorn Planorbarius corneus allospecies (Mollusca: Gastropoda: Planorbidae) from the Ukrainian river system
Authors: Uvayeva Olena I. , Stadnychenko Agnessa P. , Babych Yuliia V. , Andriychuk Tamara V. , Maksymenko Yuliia V. , Vyskushenko Dmytro A. , Ignatenko Olga O. , Pinkina Tatiana V.
Published: April 2022

The vicaristic genetic allospecies (“western” and “eastern”) of superspecies complex Planorbarius corneus s. lato from Ukrainian river network have the combined bimodal respiration mode. These molluscs use their true lungs for atmospheric oxygen breathing, and the diffusive (surface) respiration is used for soluble oxygen consumption. Oxygen transportation to different tissues and organs and carbon dioxide from them to lungs occurs due to respiratory pigment hemoglobin in their liquid internal medium (hemolymph), circulating in vessels, lacunas and sinuses of these animals’ open circulatory system. The aim of present study was to clarify the features and difference levels of lung and surface respiration for “western” and “eastern” allospecies under the impact of heavy metal ions in water environment (MPC: 0.5, 1, 2, 3). It was established that the toxins could be ranged by their toxicity level for activation of molluscs’ respiratory function: Cu2+>Zn2+>Ni2+ >Mn2+. The “eastern” allospecies appeared to be more sensitive and less durable for all aforementioned toxins by both lung and direct diffusive respiration, comparing to the “western” allospecies.
બાલાશંકર કંથારિયા અને ઈતિહાસમાલા
Authors: Chauhan Ramesh M.
Published: April 2022

મારા આ લેખનું પ્રયોજન બાલાશંકર કંથારિયાને ફારસી ભાષા અને મધ્યકાલીન ઈતિહાસના અભ્યાસ તરફ દોરનારા પ્રારંભિક જીવનના પરિબળો દર્શાવીને, ગુજરાત ભાષામાં ઇતિહાસનું પ્રથમ માસિક ‘ઈતિહાસમાલા’ શરુ કરીને મધ્યકાલીન ગુજરાતના ઈતિહાસના ઐતિહાસિક ચર્ચાના મંડાણ કરીને ઈતિહાસની સાચી હકીકત બહાર લાવવાના તેમને જે પ્રયત્ન આદર્યો હતો, તે આલેખવાનો છે
Preparation and Characterisation of Irradiated Beans Ink for Offset Lithography Printing
Authors: Noraisyah Hafizan Sabturo  , Siti Amira Othman
Published: April 2022

Petroleum-based ink has been widely used around the world, especially in the offset of the lithography printing industry. However, it has negative consequences on the environment as well as the workers who are engaged with it. It includes volatile organic compounds (VOCs), which have a high vapor pressure at room temperature, such as toluene (C7H8). Peanut oil was used in this study to create an offset lithography ink. The objectives of this study are to investigate the physical and chemical properties of peanut beans, to study the effect on peanut oil during the pre- and post-irradiation, and to determine the appropriateness of ink to replace the use of petroleum-based ink. The preparation and characterization of this vegetable-based ink were then used to investigate its capability of becoming a good quality ink that does not bring harm to the consumer after being irradiated with gamma rays. About 15 ml of peanut oil was heated and mixed continuously with 1.5 g of 99% sodium hydroxide (NaOH) pellets for 30 min at a temperature of 133°C, to go through an alkali-refined process. The sieved solution was then added to 1 g of 99% butylated hydroxytoluene (BHT) powder, 1.5 g of 100% activated carbon, and 1 g of Arabic gum powder for 20 min, under the same temperature. After being irradiated, the intensities and viscosities of ink increased, compared to before it was irradiated by gamma rays. In the future, the concept of developing ink from vegetable oil has given rise to the concept of developing ink from peanut oil. This sort of ink was appropriate for usage in the offset lithography printing industry. The industry necessitated a greater use of ink for the manufacture of the majority of items we see today, such as newspapers, novels, comic books and magazines. It is far less expensive, and does not emit VOCs into the environment, which will have a negative consequence on a global scale.