bluuebunny/crossref_metadata_2025_split huggingface dataset:
KARAKTERISTIK HASIL PENGECORAN DIE CASTING PADUAN ALUMUNIUM TEMBAGA (Al-Cu)
Authors: Pranata Edy , Maruf Maruf 
Published: December 2024

Aluminium merupakan logam non-besi yang bahan dasarnya adalah bauksit dan kreol. Logam lebih dari setengahnya terdiri dari unsur-unsur kimia. Salah satu jenis logam yang paling berguna dalam industri adalah paduan Al-Cu yang biasa digunakan untuk penempaan tugas berat, pemasangan pesawat terbang, dan rangka truk. Pengecoran merupakan cara tertua dalam proses pembentukan logam. Pengecoran logam tebal atau die casting adalah pengecoran bertekanan dimana logam ditekan ke dalam cetakan dalam kondisi mendekati titik beku. Proses Die Casting dilakukan variasi suhu penuangan (650°C, 670°C dan 690°C), tekanan ( 0, 2,5, 5 dan 7,5 MPa) dengan waktu pengadukan 90 detik. Sedangkan hasil pengujian nilai kekerasan, kekerasan tertinggi terhadap suhu penuangan dengan hasil 650°C sebesar 86 HB dan terendah pada suhu 690°C sebesar 58 HB dan kekerasan terhadap tekanan tertinggi dengan hasil 7,5 MPa sebesar 86 HB pada suhu 650°C dan terendah tanpa tekanan sebesar 58 HB pada suhu 690°C. Semakin tinggi temperatur penuangan semakin menurun nilai kekerasan dan semakin besar tekanan semakin tinggi nilai kekerasan spesimen. Aluminum is a non-ferrous metal whose basic ingredients are bauxite and creole. Metal is more than half composed of chemical elements, One of the most useful types of metal in the industry is Al-Cu alloy commonly used for heavy-duty forging, aircarft fitting and truck frame. Casting is the oldest way to process metal forming. Thick metal casting or die casting is pressure casting where the metal is pressed into the mold in near freezing conditions.The Die Casting process carried out variations in pouring temperatures of (650°C, 670°C and 69 °C), pressures of (0, 2.5, 5 and 7.5 MPa) with a stirring time of 90 seconds. While the results of testing the value of hardness, the highest hardness to pouring temperature with the results of 650°C of 86 HB and the lowest at 690°C of 58 HB and the highest hardness to pressure with a result of 7.5 MPa of 86 HB at 650oC and the lowest without pressure of 58 HB at temperature of 690oC. The higher the pouring temperature, the lower the hardness value and The greater the pressure, the higher the hardness value of the specimen.
PENGARUH MODIFIKASI KOMPRESI RUANG BAKAR PADA MOBIL HEMAT ENERGI
Authors: Wahyudi Ikhsan , Humaidi Khairi 
Published: December 2024

Tujuan dari penelitian ini adalah untuk membandingkan penggunaan bahan bakar khusus dari sepeda motor 4 langkah yang telah dimodifikasi dengan rasio kompresi 9,2 : 1, menggunakan bahan bakar jenis pertalite. Penelitian ini dilakukan melalui metode eksperimen yang melibatkan sepeda motor Honda Beat FiData hasil penelitian dianalisis melalui tiga percobaan dengan RPM 1500, 2500, dan 3000. Setiap percobaan menggunakan 100 ml bahan bakar pertalite untuk mengevaluasi konsumsi bahan bakar, yang kemudian dihitung. Hasil penelitian menunjukkan adanya perbedaan konsumsi bahan bakar spesifik dari ketiga variasi penggunaan RPM saat berkendara. Percobaan pertama dilakukan pada rentang RPM 1000-1500 dengan beban total kendaraan 200 Kg, menghasilkan konsumsi bahan bakar 2,3 Km/100 ml (23 Km/L) pada kecepatan 11 Km/j. Percobaan kedua pada rentang RPM 1500-2500 dengan beban yang sama menghasilkan konsumsi 3,5 Km/100 ml (35 Km/L) pada kecepatan 40 Km/j. Percobaan ketiga pada rentang RPM 2500-3000 dengan beban yang sama menghasilkan konsumsi 3,2 Km/100 ml (32 Km/L) pada kecepatan 65 Km/j. Penurunan RPM secara signifikan mempengaruhi konsumsi bahan bakar, di mana semakin rendah RPM, semakin tinggi kebutuhan bahan bakar. This study aims to compare the specific fuel consumption of modified 4-stroke motorbikes with a compression ratio of 9.2: 1 using pertalite fuel. The experimental method was carried out on a Honda Beat Fi motorbike. The research data was analyzed through three experiments with RPM 1500, 2500, and 3000. Each experiment used 100 ml of pertalite fuel to evaluate fuel consumption, which was then calculated. The research results show that there are differences in specific fuel consumption from the three variations in RPM use when driving. The first experiment was carried out in the RPM range 1000-1500 with a total vehicle load of 200 Kg, resulting in fuel consumption of 2.3 Km/100 ml (23 Km/L) at a speed of 11 Km/h. The second experiment in the RPM range 1500-2500 with the same load resulted in a consumption of 3.5 Km/100 ml (35 Km/L) at a speed of 40 Km/h. The third experiment in the 2500-3000 RPM range with the same load resulted in a consumption of 3.2 Km/100 ml (32 Km/L) at a speed of 65 Km/h. Reducing RPM significantly affects fuel consumption, where the lower the RPM, the higher the fuel requirement.
PENGARUH JENIS BASE OIL TERHADAP SUHU MESIN DAN KONSUMSI BAHAN BAKAR PADA MESIN 4-TAK 100 CC
Authors: Oktarinda Muhammad Dwiki , Misbachudin Misbachudin , Nur Raybian 
Published: December 2024

Untuk memastikan efisiensi yang optimal dari tenaga yang dihasilkan melalui pembakaran, diperlukan sistem pelumasan yang tepat. Secara umum, fungsi utama pelumas ialah sebagai perantara mengurangi gesekan dan keausan. Sistem pelumasan pada mesin kendaraan penting, karena kualitas sistem pelumasan mempengaruhi kinerja dan umur mesin. Penelitian ini bertujuan untuk menganalisis pengaruh variasi jenis base oil terhadap suhu mesin dan konsumsi bahan bakar pada mesin mobil hemat energi. Penelitian dilakukan dengan menggunakan tiga jenis base oil yaitu oli mineral grup 2, oli semi sintetik, dan oli full sintetik dengan viskositas SAE 10W-30. Pengujian dilakukan pada mesin bensin 4 tak berkapasitas 100cc dengan bahan bakar pertamax. Pengukuran dilakukan pada putaran idle ±1500 rpm selama 10 menit. Hasil penelitian menunjukkan bahwa jenis base oil berpengaruh terhadap suhu mesin dan konsumsi bahan bakar. Oli full sintetik memberikan performa terbaik dengan suhu mesin yang lebih rendah dan konsumsi bahan bakar yang lebih efisien dibandingkan dengan oli mineral grup 2 dan oli semi sintetik. To ensure optimal efficiency from the power generated through combustion, an appropriate lubrication system is necessary. In general, the main function of lubricants is to act as intermediaries in reducing friction and wear. The lubrication system in vehicle engines is crucial as its quality affects the performance and lifespan of the engine. This study aims to analyze the influence of variations in base oil types on engine temperature and fuel consumption in energy-efficient car engines. The research was conducted using three types of base oils: Group 2 mineral oil, semi-synthetic oil, and full synthetic oil, all with a viscosity of SAE 10W-30. Testing was performed on a 100cc 4-stroke gasoline engine using pertamax fuel. Measurements were taken at an idle speed of approximately 1500 rpm for 10 minutes. The results showed that the type of base oil significantly affects engine temperature and fuel consumption. Full synthetic oil provided the best performance with lower engine temperatures and more efficient fuel consumption compared to Group 2 mineral oil and semi-synthetic oil.
PENGUKURAN POTENSI ENERGI MATAHARI DAN PERANCANGAN PLTS TERHUBUNG JARINGAN PADA GEDUNG LABORATORIUM TEKNIK 1 ITERA
Authors: Harmiansyah  , Putra Pramana , Nuruli Febmartini Evita , Hadi Fahmi Sapta , Inrum Putri Aâ€™isyati , Saputra Rizki Octa , Saputra Muhammad Atma , Efendi Rustam 
Published: December 2024

Energi matahari merupakan energi yang dapat diperbaharui terus-menerus serta ramah lingkungan. Perancangan PLTS dapat dilakukan dengan mengetahui nilai potensi sinar matahari pada suatu wilayah, panel surya memiliki cara kerja mengonversi radiasi matahari menjadi energi listrik. Tujuan dari penelitian ini adalah menganalisis potensi energi matahari, perancangan modul surya berbasis on grid pada atap gedung Laboratorium Teknik 1 dan menganalisis biaya investasi awal serta pemeliharaan PLTS. Metode penelitian ini dilakukan dengan mengukur besar energi matahari menggunakan alat solar power meter, merancang sistem PLTS terhubung jaringan dengan software PVSys dan perkiraan biaya. Berdasarkan hasil penelitian didapatkan Global Horizontal Irradiance dengan nilai rata-rata sebesar 1705,1 W/m2, Direct Radiation sebesar 1662,2 W/m2, Diffuse Radiation sebesar 187,28 W/m2, dan Albedo Radiation sebesar 0,10897. PLTS yang dirancang membutuhkan nilai total investasi awal sebesar Rp 699.352.092,-. Biaya pemeliharaan dan operasional per tahun untuk PLTS yang akan dibangun di atap Laboratorium Teknik 1 sebesar Rp 6.993.520.92, - per tahun. Diperkirakan usia panel surya mencapai 25 tahun maka total biaya pemeliharaan dan operasional sebesar Rp 174.838.023,-.
PERANCANGAN JARI PROSTETIK UNTUK PENYANDANG TUNA DAKSA BERBASIS SENSOR SENTUH DAN ARDUINO UNO
Authors: Ulan Rufaida Fatkhul Janna , Nurâ€™Aidha Amalia C. , Kumarajati Dhananjaya Y.H , Agisna Faza , Chaerunisa Salsabilla Thallah 
Published: December 2024

Metode rehabilitasi penyandang tuna daksa dapat dilakukan dengan memanfaatkan alat bantu pergerakan atau prostetik. Namun, jari prostetik kebanyakan yang ada dipasaran hanya fokus pada fungsi estetiika tanpa memperhatikan fungsi mekanika jari sehingga tidak semua penyandang tuna daksa yang kehilangan jari bisa memanfaatkan berbagai jenis jari prostetik. Tujuan dari penelitian ini adalah mengembangkan desain jari prostetik menjadi lebih terjangkau bagi para disabilitas dengan tingkat akurasi dan menghasilkan produk jari prostetik yang memiliki kinerja dan kekuatan yang baik, serta sesuai dengan kebutuhan dan keinginan pengguna. Penelitian ini melibatkan metode ekperimen dan pengujian berulang. Penggunaan jari prostetik ini dibatasi pada penyandang tuna daksa untuk jari tanganyang kehilangan jari tangan. Keberhasilan dalam penelitian ini menunjukkan bahwa komponen yang digunakan pada jari prostetik berfungsi dengan baik hingga jari prostetik dapat bergerak 127 hingga 162 milidetik dimana nilai yang lebih dari 150 milidetik hanya terdapat 2 kali pada percobaan ke 7 dan 8 selain dari itu semuanya kurang dari 150 milidetik yang mana masuk dalam kategori sangat memuaskan. Dengan begitu dapat dikatakan tingkat akurasi dari jari prostetik ini sebesar 98%.
ANALISIS KEKUATAN MEKANIK KOMPOSIT LIMBAH PLASTIK RECYCLE SINGLE USE DAN SERBUK KAYU
Authors: Aundry Tsalsa , Munang Aswan 
Published: December 2024

Pengembangan material dapat meminimalkan dampak terhadap lingkungan selama siklus hidupnya. Siklus hidup dimulai dari komposisi bahan mentah, proses produksi, penggunaan dan sistem daur ulang. Komposit disusun menggunakan material limbah sedotan plastik dan serbuk kayu menggunakan matriks resin polyester. Pembuatan spesimen komposit dengan pencetakan compressing molding menggunakan press hydraulic kapasitas 12 ton. Pembuatan spesimen dengan tiga fraksi volume berbeda. Spesimen satu (sedotan plastik 30%, serbuk kayu 70%), spesimen dus (sedotan plastik 40 %, serbuk kayu 40 % dan matriks polyester 20 %) serta spesimen tiga (matriks polyester 70 %, serbuk kayu 30%). Pengujian tarik dilakukan enam kali menggunakan standar ASTM D3039 dengan mesin Computer Servo hydraulic universal testing machine. Pengujian impact dilakukan enam kali dengan ASTM D256 menggunakan mesin charpy impact tester. Berdasarkan hasil pengujian, dapat diketahui bahwa komposisi material 40% serbuk kayu, 40% sedotan plastik, dan 20% matriks polyester memiliki kekuatan pengujian tarik dan impact optimal. Hasil pengujian tarik dan impact berturut-turut 16 N/ dan 1,27 Joule. Perpaduan ikatan antar matriks dan serat material dengan tiga variasi komposisi dapat dijadikan salah satu alternatif dalam pengembangan material maju dan ramah lingkungan.
ANALYSIS OF TUMBAORHYTHM PATTERNONCONGA IN NECESITAS TU
Authors: Margana Rangga , Saryanto  , Srimoko Gandung Joko , Retnowati Tjut Etty 
Published: December 2024

The purpose of this study is to describe the results of the Analysis TumbaoRhythm PatternonConga in Necesitas Tu. The research method used is qualitative with a descriptive approach. This research was carried out from October 2020 to June 2021. The results of the study can be concluded that the most popular Basic of Latin Cuban is the tumbao pattern. The tumbao pattern is the basic pattern for playing conga in salsa music. In the song Necesitas Tu there are two types of variations of the tumbao pattern, namely: variation I and variation II. It can be concluded that the song Necesitas Tu by Blue Mambo has 9 (nine) parts, namely: intro, main theme, development section, interlude, solo, intro, main theme, development section, and coda. The section that has more than one variation of the tumbao rhythm pattern is the development section. Overall there are 4 (four) techniques used in the tumbao pattern such as heel, fingertip/toe, slap, and open tone. The implication of the results of this study is to explore conga instruments that are of interest in developing percussion skills. Music education institutions are to provide adequate facilities so that students are more active in exploring conga instruments, so that students are motivated to improve their abilities or skills in processing Latin percussion instruments as well as Indonesian ethnic percussion.
DEVELOPMENT OF AJENG TRADITIONAL ART IN 2010 – 2020 AT SANGGAR SINAR PUSAKA KARAWANG
Authors: Suhendy Suhendy 
Published: December 2024

Ajeng is one of the traditional arts of Indonesia which is precisely located in Karawang regency, West Java province. Basically the function of Ajeng art as music to welcome guests - large guests. Ajeng is an art that is classified as old and feared extinct, therefore the purpose of this research is to know the development of Ajeng art from 2010 - 2020 and it is expected that Ajeng art can be better known and still show its existence. This research uses descriptive qualitative method, data collection in this research by interview, observation, documentation and theoretical analysis. The object of his research is one of Ajeng's surviving art groups, sanggar Sinar Pusaka Abah Tarim Karawang. The results of this study showed that Ajeng experienced developments, one of which in terms of performance examples: in the past Ajeng only presented instrumentalia music but over time added vocal elements to increase public interest in Ajeng art.
THE MOTIF OF THE BANYUWANGI KENDANG PERFORMANCE IN THE CAK MUNARNO STYLE OF CAK MUNARNO JEJER DANCE accompaniment
Authors: Aprian Willy , Supriadi Didin 
Published: December 2024

This study aims to describe the Banyuwangi drum percussion motif found in the Jejer Gandrung Dance with the cak Munarno percussion style. The research method used is descriptive qualitative research, this research was carried out at the TMII Pavilion in East Java and at the home of the resource person which was held from February 26, 2022 to May 17, 2022. The data obtained were the result of carrying out observations, interviews, documentation, and journals collected. obtained. The result of this research is that Banyuwangi art has unique characteristics and is very thick, by obtaining descriptions of various kinds of Banyuwangi drum beat motifs that exist, especially drums to the accompaniment of the Jejer Gandrung dance. With this, traditional arts actors in DKI Jakarta and The Sanggars who are still active in performing and preserving the arts of the archipelago can understand the meaning and can give performances properly, both musicians and dancers. In the world of education, of course, this wasp motif can be used as teaching material for music educators, especially traditional music in providing Banyuwangi art material, because this Gandrung art is an art that is already familiar and has become an icon of Banyuwangi Art itself.
ANALYSIS OF ELLA FITZGERALD’S SCAT SINGING TECHNIQUE IN ALL OF ME
Authors: Dyah Paramitha Monica , Evelin Limbong Helena , Hardiarini Caecilia 
Published: December 2024

The term “jazz” has a variety of meanings because it has been used to describe various styles of music. But, there are two aspects that almost all jazz styles have in common—swing feeling and improvisation. In jazz music, vocal improvisation has the same definition as an instrument improvisation, where the musician or vocalist creating melodies based on pre-exisiting chord progressions. Based on the writer's personal experience in a jazz community in Indonesia, singers have difficulty getting information to learn vocal improvisation or scat singing. This research was started on October 2020 and the writer used a qualitative approach to investigate Ella Fitzgerald’s scat singing technique. Fitzgerald’s scat singing skills consists of several interesting musical elements to learn such as motives and motivic development, chordal approach, and chromatic approach. For singers who want to learn about scat singing and it sounds interesting like Fitzgerald, must have at least a basic musical theory, basic vocal technique and ability mimicking the sound of musical instruments using the nonsense syllables.
História musical: marketing
Authors: Felipe Giovani , Sartori Anderson , Ferraz dos Santos Daniel , Orige Luzietti Larissa , Alexandre Rodrigues da Silva Vitor , Ferro Cleber Luiz Damin , Pereira Patricia Kellen 
Published: December 2024

Esta pesqusia desenvolveu canções e jingles baseados em pesquisas com clientes para aprimorar a divulgação de produtos. O objetivo principal é utilizar a música como ferramenta de marketing, com objetivos específicos de apresentar produtos de confecção por meio de música/jingle, compreender as demandas dos consumidores e contribuir para o setor de marketing privado. A música, reconhecida como um poderoso instrumento de expressão, tem exercido influências significativas sobre culturas e provocado importantes mudanças ao longo da história. A pesquisa é qualitativa e busca entender as preferências dos clientes da empresa surf.com para a criação de jingles promocionais. O roteiro das propagandas inclui a apresentação da marca em diversos ambientes e situações cotidianas. A música é reconhecida como uma ferramenta eficaz para o desenvolvimento cognitivo, afetivo e social, tornando o ambiente de aprendizagem mais agradável. Esta pesquisa explora essa realidade por meio de uma abordagem básica, compreendendo os gostos e expectativas das pessoas em relação ao uso da música como ferramenta educacional. Conclui-se que, quando utilizada de forma estratégica, a música pode contribuir para o sucesso das campanhas de marketing, servindo não apenas como ferramenta de divulgação de produtos, mas também como um meio de fortalecer a relação entre a marca e seus consumidores
Generative Deep Neural Networks for Estimating Hypervariability in Hepatitis B and C Virus Genomes
Authors: Saqib Sharmeen , Mumtaz Zilwa , Ahmed Hania , Ali Ashiq , Qazi Obaidullah , Yousaf Muhammad Zubair 
Published: December 2024

Abstract

Hepatitis B virus (HBV) and Hepatitis C virus (HCV) have always remained a greater global concern. Approximately 1.3 million deaths occur each year due to HBV and HCV. Due to the diverse genotypes and drug resistance, diagnostic challenges are being faced to treat these viruses. Therefore, the success ratio of the antiviral therapies has been decreasing with time in the last few decades. By deep learning predictive model, the pattern of evolution in hypervariable regions of HBV and HCV genes can be foreseen. In HCV, the hypervariable region is the Envelope glycoprotein (E2) gene, while in HBV, it includes the S1 and S2 genes. Generative models in deep learning have been used for evolutionary studies, but the application of these models is limited in viral research for predicting the evolving genotypes of viruses. The Long Short-Term Memory (LSTM) model represented a satisfactory outcome in predicting the sequences of the hypervariable genes of the evolving genotypes of the HCV and HBV genes that might be of a great help in diagnosis and vaccine design. We collected data from databases like NCBI and BVBRC. Our proposed LSTM generative model was trained on 1500 sequences of hypervariable genes of the present 7 genotypes of Hepatitis C and 10 genotypes of HBV. Apart from the traditional generative models like Recurrent Neural Network (RNN), our model not only generates the sequence but also learns and develops the relationship between various parts of the virus’s genetic code. In this study, three generative models were compared, Simple RNN, 1-Dimensional Convolutional Neural Network (ConV1d) and Long Short-Term Memory (LSTM). Among these three, LSTM demonstrated the least error rate with the highest efficiency and accuracy. While simple RNN and ConV1d illustrated relatively higher error rate and lower accuracy. LSTM gained success in reading long dependencies, hence, the proposed LSTM models are efficient at handling the sequential data along with preventing the conventional issue of losing the important information from the data, which happens frequently in generative models like Simple RNN and ConV1d.
BiEntropiGram: A Novel Time-Frequency Entropy Map for Rotating Machines Incipient Fault Diagnosis
Authors: Ohadi Abdolreza , Khoram-Nejad Emadaldin Sh , Almas-Ganj Farshad 
Published: December 2024

Abstract

Diagnosing incipient faults in rotating machinery is crucial for reducing maintenance costs and preventingthe occurrence of other faults. Accurately extracting fault-related features from vibrationaltime series is fundamental to early fault detection. Entropy has emerged as a robust metric for quantifyingcomplexity in time series; however, entropy-based feature extraction methods often requireparameter tuning and tend to overlook frequency-domain features. This paper introduces BiEntropi-Gram, a novel time-frequency entropy mapping technique synthesizing information from both thetime and frequency domains into a 2D image representation. In this framework, time-domain featuresare extracted using Time Shift Multi-Scale Attention Entropy (TSMAtE), while frequency-domainfeatures are derived through Time Shift Multi-Scale Spectral Entropy (TSMSpE). Noise analysisis employed to determine the optimal number of time scales and the ideal time series length tooptimize performance. Analytical studies with various noise types further demonstrate the superiorperformance of BiEntropiGram compared to features extracted solely via TSMAtE or TSMSpE. Theproposed fault diagnosis system utilizes an optimized convolutional neural network (CNN) coupledwith the Bees Algorithm (BA)—termed BACNN—to refine feature selection and classify faults usingan optimized support vector machine (SVM). The efficacy of BiEntropiGram is validated across fivepublicly available datasets, achieving 100% diagnostic accuracy on three datasets with faults of varyingseverity. Furthermore, BiEntropiGram outperforms traditional methods, including the Morlet andMexican Hat Continuous Wavelet Transforms (CWTs) and Short-Time Fourier Transform (STFT).These results confirm the effectiveness of the proposed BiEntropiGram-based fault diagnosis approachfor the diagnosis of incipient faults in rotating machinery.