bluuebunny/crossref_metadata_2025_split huggingface dataset:
KETAHANAN SOSIAL EKONOMI DAN PENDIDIKAN DI ERA NEW NORMAL : Studi Kasus Penguatan Budaya Gotong Royong Secara Virtual Oleh Lazismu Kota Depok
Authors: Solihuddin Heri 
Published: June 2023

Era New Normal ditandai dengan gerakan kebangkitan masyarakat pada awal tahun 2021 setelah setahun lebih terhempas badai Covid-19 yang meluluh-lantahkan sendi-sendi sosial kita, ekonomi dan pendidikan adalah dua persoalan yang memiliki implikasi besar dalam tataran kehidupan sosial kita. Karena itu hadirnya kesadaran kolektif masyarakat yang memiliki kepedulian terhadap kondisi disekitarnya sebagai social responsibility harus kita dukung bersama. Tulisan ini merupakan hasil observasi, wawancara dan studi dokumen terhadap program Lazismu Kota Depok. Sedangkan analisis data yang digunakan dalam studi kasus ini adalah analisis data kualitatif dikaitkan dengan gerakan penggalangan dana yang diselenggarakan oleh Lazismu Kota Depok, untuk membantu masyarakat dalam mengatasi masalah sosial masyarakat terdampak Covid-19 khususnya di Kota Depok.Hasilnya menunjukkan bahwa penggalangan dana secara vrtual yang dilakukan oleh Lazismu Kota Depok sangat berkontribusi dalam mewujudkan ketahanan sosial masyarakat terdampak covid-19 khususnya di Kota Depok.

The New Normal era is marked by the movement of people's revival after more than a year of the Covid-19 storm that devastated our social joints, economy and education are two issues that have major implications at the level of our social life. Therefore, the presence of a collective awareness of the people who have concern for the surrounding conditions as social responsibility must be supported together. This paper is the result of observations, interviews and document studies of the Depok City Lazismu program, while the data analysis used in this case study is qualitative data analysis associated with the fundraising movement organized by Lazismu Depok City to assist the community in overcoming social problems affected by COVID-19 especially in Depok City. The results show that the virtual fundraising carried out by Lazismu in Depok City greatly contributes to realizing the social resilience of communities affected by COVID-19, especially in Depok City.
EVALUASI PROGRAM PRAKTIK KERJA INDUSTRI DI SMK NEGERI 60 JAKARTA
Authors: Ruhiman Maman , Setiadi Hari , Ernawati  
Published: June 2023

Penelitian ini bertujuan untuk mengevaluasi implementasi program praktik kerja industri di SMK Negeri 60 Jakarta. Praktik Kerja Industri adalah kegiatan pembelajaran yang dilakukan di Dunia Usaha/Dunia Industri dan/atau lapangan kerja lain untuk penerapan, pemantapan, dan peningkatan kompetensi peserta didik Sekolah Menengah Kejuruan. Model evaluasi yang digunakan adalah model CIPP dengan pendekatan kualitatif, fokus pada konteks, input, proses dan produk program praktek kerja industri. Pengumpulan data menggunakan studi dokumentasi, wawancara, angket, dan observasi. Uji kredibilitas data dalam penelitian ini menggunakan teknik memperpanjang masa pengamatan dan triangulasi (triangulasi sumber dan triangulasi teknik). Langkah dan teknik analisis data menggunakan persentase, kategorisasi dan deskriptif disesuaikan dengan komponen yang dievaluasi. Hasil temuan menunjukkan: (1) konteks evaluasi, perencanaan program dan tujuan program praktik kerja industri sudah sesuai dengan kebutuhan stakeholder, namun masih ada sebagian kecil peserta didik yang mencari sendiri tempat prakerinnya; (2) input evaluasi, sarana prasarana untuk melaksanakan program sudah terpenuhi dan tempat praktek kerja industri tersedia pada setiap periodenya namun belum sesuai dengan kebutuhan daya tampung peserta didik yang akan praktik kerja industri; (3) proses evaluasi, peralatan di industri dan guru pembimbing sudah tercukupi serta pelaksanaanya sudah mengikuti ketentuan sekolah, namun masih ditemukan hambatan dalam pelaksanaan prakerin terkait kesenjangan spesifikasi peralatan praktik kejuruan industri dengan yang biasa digunakan di sekolah; (4) produk evaluasi, output program praktek kerja industri tercermin dari rata-rata nilai rapot peserta didik pada mata pelajaran kejuruan, dimana nilai rapot mata pelajaran kejuruan tiap semester terus meningkat setelah peserta didik melakukan praktik kerja industri, sementara outcome program praktik kerja industri terlihat pada keterserapan tamatan, dimana data keterserapan tamatan di SMK Negeri 60 Jakarta menunjukkan bahwa peserta didik yang telah lulus minimal satu tahun sebelumnya terserap ke dunia kerja seluruhnya.
EVALUASI PROGRAM SISTEM KELAS TUNTAS BERKELANJUTAN SMP LABSCHOOL KEBAYORAN JAKARTA SELATAN
Authors: Murtiningsih  , Setiadi Hari , Ernawati  
Published: June 2023

Penelitian ini bertujuan untuk memperoleh informasi dan mengevaluasi program Sistem Kelas Tuntas Berkelanjutan (SKTB). Metode yang digunakan adalah metode kualitatif dengan model CIPP (Context, Input, Process, Product). Pendekatan yang digunakan dengan pendekatan kualitatif, teknik pengumpuluan data observasi, wawancara, dokumentasi dan kuesioner. Hasil evaluasi ini menyimpulkan bahwa pelaksanaan program Sistem Kelas Tuntas Berkelanjutan (SKTB) SMP Labschool Kebayoran Jakarta Selatan sudah sesuai pedoman visi, misi sekolah, sesuai dengan kebijakan pemerintah melalui kementerian pendidikan dan kebudayaan serta sesuai dengan kebutuhan stakeholder. Hasil Ujian Nasional dan Ujian Sekolah, dari data dokumen terlihat bahwa SMP Labschool Kebayoran menghasilkan hasil rata – rata ujian yang sangat baik, ini menandakan peserta didik yang bermasalah ketuntasan mampu berperan serta menjaga rata – rata nilai Ujian Nasionalnya. Program SKTB berhasil membawa ketidaktuntasan menjadi prestasi di Ujian Nasional. Sebaran data alumni juga menunjukan bahwa peserta program SKTB banyak yang di terima di sekolah negeri dan swasta terbaik, serta program ini memberikan kebermanfaatan bagi para alumni peserta program
Purwarupa Monitoring Status Gunung Api Berbasis Internet of Things
Authors: Rosyady Phisca Aditya , Widotomo Yudi 
Published: June 2023

Abstrak— Indonesia merupakan negara yang memiliki banyak gunung api dengan potensi bencana erupsi gunung api yang cukup tinggi. Erupsi gunung api dapat merugikan penduduk sekitar gunung api. Terdapat penggunaan indikator status dalam penentuan kondisi gunung api aktif. Status gunung api terbagi menjdi empat yaitu normal, waspada, siaga dan awas. Air dari danau kawah gunung api merupakan salah satu cara yang dapat digunakan untuk mengetahui status dari suatu gunung api. Penelitian ini dilakukan untuk merancang sistem yang dapat memantau status gunung api dengan menggunakan suhu air pada danau kawah. Sistem yang dirancang pada penelitian ini menggunakan sensor DS18B20 yang berguna untuk mendeteksi nilai suhu pada air danau kawah gunung api. Mikrokontroler yang digunakan dalam pembuatan sistem adalah NodeMCU. Data nilai suhu dikirim menggunakan metode Internet of Things (IoT) ke media platform ThingSpeak dan aplikasi Blynk. Sistem akan memberikan informasi status gunung api pada aplikasi Blynk. Status gunung api akan normal jika suhu air danau kawah 0-32°C. Status waspada jika suhu air berada diantara 32°C-37°C. Status siaga jika suhu air berada antara 37°C-39°C. Status awas jika air memiliki suhu melebihi 39°C. Pengujian sistem menghasilkan error suhu sebesar 2,132oC. Kemampuan sistem dalam mendeteksi status gunung api secara realtime dapat berjalan dengan baik dan sesuai dengan batasan yang telah ditetantukan
Analisa Studi Kelayakan Pembangunan PLTS 10 kWp di Graha YPK PLN
Authors: Pawenary Pawenary , Khairunnisyah Putri , Pradana Arditiyan Elyas 
Published: June 2023

Perencanaan PLTS di Graha YPK PLN dibutuhkan sebagai sistem back-up atau pengganti untuk mengurangi penggunaan listrik konvensional. Sistem On Grid merupakan sistem Pembangkit Listrik Tenaga Surya yang tidak terhubung dengan jaringan listrik PLN. Sistem On Grid ini disebut juga dengan sistem pembantu dikarenakan PLTS masih membutuhkan supply dari PLN dengan menggunakan modul surya sebagai penghasil energi listrik sesuai dengan kebutuhan yang diperlukan. Perencanaan Pembangkit Listrik Tenaga Surya 52 m2 sistem On Grid dengan komponen PLTS berupa 24 modul dipasang dengan panel surya 450 Wp, 1 buah Inverter berkapasitas 15330 Watt, Radiasi matahari untuk tahun 2021 rata-rata yaitu 4,67. Biaya energi PLTS Graha YPK PLN 52 m2 adalah Rp. 1.444,70/kWh dengan impor sebesar 9.240.4 kWh/Bulan dan eksport sebesar 1380,61 kWh/Bulan. Dengan perhitungan ekonomi, total biaya investasi pada perencanaan ini sebesar Rp. 257.105.000 dengan waktu pengembalian investasi selama 16 tahun.
Analisis Pengaruh Posisi Dan Media Penghalang Terhadap Gelombang Keluaran Pada Wireless Power Transfer
Authors: Cahya Baswara Ahmad Raditya , Sari Nurjanah Arvika 
Published: June 2023

Abstrak— Energi listrik tergolong sebagai kebutuhan primer yang diperlukan manusia. Berbagai kebutuhan manusia memerlukan mobilitas yang tinggi seperti contohnya kendaraan listrik atau peralatan listrik yang lainnya. Kabel yang terlalu banyak digunakan dapat membatasi mobilitas perangkat. Oleh karena itu diperlukan solusi agar mobilitas pada perangkat listrik dapat bekerja dengan baik. Salah satu contoh aplikasi Wireless Power Transfer adalah proses pengisian daya nirkabel. Perangkat Wireless Power Transfer perlu diketahui karakteristiknya guna menghasilkan keluaran yang sesuai agar dapat digunakan pada aplikasinya. Metode yang digunakan dalam penelitian ini adalah eksperimen. Eksperimen dilakukan dengan memberi perubahan posisi dan media penghalang diantara kumparan transmitter dan kumparan receiver. Variasi posisi dilakukan memberikan jarak,sudut,dan pergeseran pada kumparan. Variasi media penghalang digunakan menggunakan bahan isolator dan konduktor. Semakin dekat jarak antara transmitter dan receiver semakin besar tegangan listrik yang dihasilkan oleh wireless power transfer. Posisi sudut pada transmitter dan receiver mempengaruhi tegangan keluaran yang dihasilkan. Semakin dekat posisi sudut antara transmitter dan receiver menghasilkan luas bidang medan magnet yang semakin besar sehingga menghasilkan tegangan receiver yang besar. Pergeseran yang terjadi pada receiver yang semakin besar menghasilkan tegangan receiver yang semakin kecil pada perangkat wireless power transfer. Media penghalang bahan isolator tidak mempengaruhi tegangan receiver yang dihasilkan sedangkan media penghalang berupa konduktor akan mempengaruhi tegangan receiver yang dihasilkan.
Enhancing efl profession-based vocabulary acquisition through 3d engineering animation for engineering students
Authors: Chaikovska Olha , Niskhodovska Olena , Spivachuk Valentyna , Kruk Alina 
Published: June 2023

Today, a majority of agricultural farms are equipped with a new type of farm machinery, tractors, which require high-quality knowledge, skills and abilities from engineers. Therefore, the ability to describe the objects, mechanisms and working schemes is a priority for future agricultural engineers. Before COVID-19 and the war in Ukraine, most ESP classes were held in specially equipped laboratories, where students could study agricultural machinery and equipment on layouts. Ukrainian educators search for alternative teaching tools to enable effective distance learning of future agricultural engineers. Three-dimensional environments can be very useful to examine agricultural machinery parts. The purpose of this experiment was to test the effectiveness of 3-D engineering animation in improving profession-based vocabulary acquisition. A two-group post-test comparative pedagogical experiment was conducted with the second-year agricultural engineering students (n = 30) during the spring semester of the academic year 2022. A series of online 3-D engineering animations was adapted with the students of the experimental group to reinforce the course content and develop vocabulary skills in participants. The achievement profession-based vocabulary test with experimental and control groups was carried out. The number of participants in each group is equal (n1 = 15, n2 = 15), so the boundary value of Хb at a 5%- level of significance for N = 30 is 4.88. The statistical interpretation of the test results based on the Van der Waerden criterion shows that Xf > Hb, respectively, 8.85 > 4.88. The differences in the results obtained are statistically significant (X = 8.85 at P < 0.05), which allows us to assert the effectiveness of training engaged in the experimental group.
Biogas production from fresh and old sawdust litter with chicken manure
Authors: Dubrovskis Vilis , Dubrovskis Dagnis 
Published: June 2023

In Latvia, forest products are widely used for heat production by direct incineration. As it causes air pollution, especially in cities, other technologies are being considered. One of them is anaerobic digestion of biomass or biogas (methane) production. Biofuels and biogas are playing a key role in the decarbonisation of the transport sector and will contribute in the future to a fuel switch in combination with electrification, for example in hybrid cars. In sectors which are difficult to decarbonize, such as heavy-duty vehicles, ships and airplanes, biofuels often represent the only technically and economically viable solution. The European Biogas Association estimates that by 2030 overall annual potential for biogas will be at least 50 billion m3. In Latvia, there is a lot of timber processing and there is a lot of sawdust. They are also used as bedding in poultry farms. Bird droppings could improve their utility for biogas production. This article shows the results about anaerobic digestion of fresh and old sawdust and sawdust litter with chicken manure and slaughterhouse waste. Fresh and old sawdust and sawdust litter with chicken manure and slaughterhouse waste were digested in 6 l digesters at temperature 38 oC in batch mode process. Average specific biogas or methane yield from anaerobic fermentation of fresh sawdust was 0.407 L·g-1DOM or 0.175 L·g-1DOM respectively. Average specific biogas or methane yield from anaerobic fermentation of old sawdust was 0.369 L·g-1DOM or 0.153 L·g-1DOM respectively. Average specific biogas or methane yield from anaerobic fermentation of sawdust litter with chicken manure and slaughterhouse waste was 0.554 L·g-1DOM or 0.335 L·g-1DOM respectively.
Development of technological process solutions in modular system of solar electricity and heat supply for greenhouses
Authors: Auce Agris , Horns Indulis Arnis , Ivanovs Semjons , Jermuss Aivars , Grinbergs Ugis , Rucins Adolfs 
Published: June 2023

Considering the recent rapid increase of the energy costs for heating commercial greenhouses, solutions for more efficient use of the solar energy are needed. In this study there is investigated application of solar energy for greenhouse heating with a joint equipment, which consists of 8.0 kW solar photovoltaic panels (PV), coupled with a 5.0 kW air-to-water heat pump, 15.0 kW solar collectors (SC), a 10 kWh solar energy accumulator (SEA), and 1600 litre water heat accumulators (WHA). The tests of the joint equipment were made in a 50 m2 experimental greenhouse (EG) in several stages: testing of heat accumulation in the water-based heat tanks, testing of the amount of the solar energy, produced by the photovoltaic panels, used for direct water heating and for the operation of the air-to-water heat pump with and without the solar accumulator; and in the periods with insufficient solar energy directly from the grid. Surplus heat from the system was used to heat the irrigation water or to drive the biomass dryer. The temperatures in various points of the heating system were measured and analysed together with average temperatures and the data about the heat and solar energy. The results of the 2022 study showed that in EG, at the average annual solar intensity of 1227.4 kWh·m-2, 6762.7 kWh of electricity was produced by PV panels, and 12385.2 kWh of heat energy by SC. In the industrial greenhouse (IG), where the total energy consumption during the period, when natural gas was used, was 17.95 m3·m-2 or 163.73 kWh·m-2, causing climate change-promoting gas emissions (GHG) of 30.29 kg CO2·m-2; the experimental greenhouse (EG) emission factor was not detected. We concluded that, without a long–term energy storage system, covering several weeks of heat consumption, the solar energy system should be supplemented with external energy sources to cover the extended periods with insufficient energy supply at the beginning and the end of the vegetation season.
Numerical simulation of polymeric composite nanofiber mat
Authors: Kanukuntla Sai-Pavan , Sanchaniya Jaymin-Vrajlal , Kardani Uchit , Beresnevics Vitalijs 
Published: June 2023

Polymeric composite nanofiber mats have attracted considerable interest due to their unusual features, which include a large surface area, high porosity, and excellent mechanical strength. Numerical simulation is an essential tool for understanding and optimising the behaviour of these nanofiber mats. This research provides a detailed investigation of numerical simulations of polymeric composite nanofiber mats, with particular emphasis on the computational methods used to predict their mechanical characteristics. Tensile testing allows for quick and easy evaluation of the performance of nanofiber composites. To further understand this increase in the mechanical characteristics of polymeric nanofiber composite systems, a finite-element model was built. Using the experimental data of the publicly available authors and an analytical model, the model is evaluated and compared. To compare the numerically and experimentally determined values of the elastic modulus of the nanofiber composite, the Rule of Mixture (ROM) and Tsai-Pagano models were used. Using the experimental data, Representative Volume Elements (RVE) were built, and the elastic modulus was predicted using RVE. In comparison to an additional analytical model, the RVE model that makes use of numerical simulation predicts an elastic modulus that is very nearly identical to the value that is practically observed. In this work, a technique for forecasting the elastic modulus is proposed using a numerical simulation of the nanofiber composite mat.
Synthesis of tillage machines and experimental research on agro technological indicators for tillage quality
Authors: Bulgakov Volodymyr , Ivanovs Semjons , Beloev Hristo , Trokhaniak Oleksandra , Klendii Mykola , Bondarchuk Anatoliy , Rucins Adolfs 
Published: June 2023

An important issue in the design of tillage machines is the search for improved machine designs to achieve high levels of productivity and quality of tillage operations, as well as the expansion of technological capabilities. One way of solving the problem of creating new machine designs for soil tillage is to implement progressive methods of searching for new technical solutions in the early stages of design preparation of production. This can be achieved by using morphological analysis, which in the fourth step involves the synthesis of object variants, which, based on the morphological matrix compiled, produces the full number of solutions. The article presents a synthesis of tillage mechanisms and machines using morphological analysis, which has led to improvements in the design of tillage machines. Hierarchical group synthesis using morphological analysis generated workable designs for alternative tillage machine variants. A method of structuring machine design for tillage and a method of their improvement based on the study of the properties of their structure elements, according to the theory of synthesis of hierarchical groups using morphological analysis, are proposed. To determine the agro-technological efficiency of the harrow with helical working tools, we conducted field tests of a rotary tool BDN-1,3 and an experimental sample of a harrow. The article presents the results of comparative tests of the disc harrow BDN-1,3 and the harrow with screw working tools. According to the results of studies, it was found that the density of the cultivated soil with the proposed helical working tools meets agricultural requirements and is 1.21 g·сm-3, which is 4.0% less than the variant with a disc harrow, and 36.3% less, compared to the agricultural background. According to the results of studies, it was found that the density of the cultivated soil with the proposed helical working tools, meets agricultural requirements and is 49.8 kN·m-2, which is 15.2% less compared to the disc harrow tillage, and 43.0% less compared with the background and the standard value. The volumetric crush coefficient of the proposed harrow variant is 51.4% lower than the background and the standard value, which varies between 1...2 N·сm-3 (for a plowed field).
Effect of shell temperature on solidification organization of equiaxed crystal blade
Authors: Cao Guoqiang , Zhang Bo , Li Gang , Peng Wenya 
Published: June 2023

The investigation was conducted into the effects of different shell preheating temperatures (1100 °C, 1150 °C, and 1180 °C) on the organization of solidification of isometric crystalline blades made for an aero-engine. The experimental results show that with the increase of shell temperature, the dendrite spacing and dendrite robustness gradually increase, while the area between dendrites gradually increases. The size of the eutectic gradually increases as the shell temperature rises, and there is no obvious regularity in the eutectic content. The size and content of carbide show a trend of decreasing first and then becoming larger, and the size relationship was 1180 °C > 1110 °C > 1150 °C. There is no obvious difference in the composition of carbides at different shell temperatures, all of them are MC-type carbides, and none of them decompose. At 1150 °C, γ΄ phase has a smaller size, the best cubical and most regular arrangement, while the largest size, worst cubicization and most irregular phase at 1180 °C.
Effect of shell temperature in thermal control solidification process on microstructure and stress rupture property of cast equiaxed superalloy
Authors: Cao Guoqiang , Shen Yuqiao , Li Gang , Peng Wenya 
Published: June 2023

Cast equiaxed superalloy is commonly used in the manufacture of engine turbine blades and complex structural castings due to its excellent casting properties and comprehensive mechanical properties. The more adaptable thermal control solidification process is usually used to refine the equiaxed crystal structure. In this paper, the microstructure and fracture surface of this alloy after solid solution were observed and characterized by means of OM, SEM, and EDS, and the effects of thermally controlled solidification processes with different shell temperatures on the microstructure and stress fracture properties of this alloy were investigated. The results showed that in this cast equiaxed crystal alloy, increasing the shell temperature from 1300 °C to 1330 °C causes the grain size to grow, microporosity to significantly decrease, and eutectic content and size to slightly increase. Both S1 and S2 alloys formed MC and M6C carbides after solid solution treatment. The size and content of carbides increased as the shell temperature rose, whereas the size and content of the γ’ phase decreased. As the shell temperature increases, the stress rupture properties increase slightly, while the degree of rafting increases dramatically. Cracks are mainly formed at the aggregation of microporosity, eutectics, and carbides. The reasons why cracks occur in the two alloys can differ. This study provides guidance for the design of a thermal control solidification process for cast equiaxed superalloys.