Online Journals Universitas Kristen Indonesia
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Studi Pengaruh Tagangan Terhadap Sifat mekanik dan Struktur mikro Pengelasan Pada Baja SS400
Get PDFABSTRAKKekuatan las sangat dipengaruhi oleh komposisi dan sifat logam induk maupun logam pengisi, proses pengelasan, pemanasan serta adanya tegangan sisa. Tujuan penelitian ini adalah menyelidiki struktur makro, struktur mikro, tingkat kekerasan dan kekuatan tarik untuk sambungan las GMAW bajakarbon akibat variasi masukan tegangan listrik. Penelitian menggunakanbahan baja SS400 dan kawat las 1,2mm dengan Arus listrik250 A dan variasi tegangan listrik 25 V, 30 V dan 35 V. Pada Filler. Pengujian struktur makro dan mikro menggunakan mikroskop optic., pengujian tarik menggunakan mesin uji tarik, dan pengujian kekerasan dengan menggunakan mesin uji kekerasan vickers,. Hasil penelitian menunjukkan bahwa tegangan listrik yang digunakan mempengaruhi mempengaruhi Struktur Makro, Struktur Mikro, tingkat kekerasan dan kekuatan tarik benda uji khsusnya area HAZ.
Kata kunci: HAZ, Struktur Makro, Struktur Mikro kekerasan, kekuatan tarik
ABSTRACTWeld strength is strongly influenced by the composition and properties of the parent metal as well as filler metal, welding process, heating, and the presence of residual stress. The purpose of this research was to investigate the macro structure, microstructure, level of hardness and tensile strength for carbon steel GMAW welded joints due to variations in the input voltage. The research uses SS400 steel and 1.2mm welding wire with an electric current of 250 A and a variation of the electric voltage of 25 V, 30 V and 35 V. In the Filler. Macro and Microstructure testing using an optical microscope, tensile testing using a tensile testing machine, and hardness testing using a Vickers hardness testing machine. The results showed that the electrical voltage used affects the macrostructure, microstructure, hardness, and tensile strength of the test object, especially in the HAZ area
Keywords: HAZ,Macrostructure,Microstructure,hardnes,tensilestrengt
Utilization of Search, Solve, Create Share Learning Model on Students’s Test Performance in Static Fluids Material
Get PDFA student-centered learning model facilitates student’s engagement in class, positively impacting learning outcomes. The search, solve, create and share learning model is one approach that effectively involves student’s engangement in learning process. This model consists of four phases: identifying problems, planning problem-solving strategies, writing solutions and communicating the solutions. This study aims to examine the application ofe search, solve, create and share model on student’s learning outcome in static fluids topic at 11th grade of SMA Negeri 14 Jakarta. The research design used is a pretest-posttest control group design. Data collection was conducted through a written test consisting of 15 multiple choice questions. The data analysis results indicate that implementing of search solve, create and share model in static fluids topic led to an increase in the average test score, from 48,50 to 70,24. The improvement in student’s test performance is also reflected in the n-gain test result of 0,352, which in moderate category
Development of Interactive Learning Videos to Improve Students\u27 Mathematical Literacy Skills
Get PDFMathematical literacy skills are very necessary for facing the challenges of the 21st century. Developing learning videos that link mathematical material to its implementation in everyday life. This research aims to: 1) develop interactive video learning media toimprove students\u27 mathematical literacyskills; 2) determinethe feasibility of learningvideo media based onexperts and students; and 3) determine the effectiveness of interactive learning videos in improving students\u27 mathematical literacy skills. This research uses a typeof research and development(R&D) that was developed using the modified ASSUREmodel by only applying four of the six development steps, namely: 1)analysing; 2)statingobjectives; 3) selecting methods, media, and materials; and 4)utilising media. The results of the research are: 1)The media developed is an interactive learning video to improve students\u27 mathematical literacy skills, which can be accessed at https://youtu.be/ZxHBMp1etEI?si=GJOtQZPKr5A2D4sK. and https://youtu.be/WvGdq0VQ0mQ?si= SpSZd-l0tjIegH_e. 2)The validation results of the media experts developed were 91.25% in the very good category; 3)the media material validation results were 91.25% in the very good category; 4)students\u27 mathematical literacy skills increased in the medium category with an N-Gain value of 0.61. Thus, interactive learning videos are suitable to be used to improve students\u27 mathematical literacy skills
The Effectiveness of Using Realistic Mathematics Education (RME)-based Students’ Worksheet to Improve Students\u27 Mathematical Problem-solving Skills
Get PDFThis study aims to determine the effectiveness of using Realistic Mathematics Education (RME)-based Students’ Worksheets (LKPD) to improve students\u27 mathematical problem-solving skills. This type of research is experimental research with pretest posttest control group design. The samples in this study were class X-E2 as the experimental class with 36 students and class X-E3 as the control class with 36 students. Data collection techniques using interviews, observations, and pretest and posttest assessments of students\u27 problem-solving skills on statistics material. The hypothesis of this study is that the use of RME-based LKPD is more effective in improving students\u27 problem-solving skills than learning without using RME-based LKPD. The results obtained from this study are the use of RME-based LKPD which contains indicators of problem-solving skills proven effective to improve students\u27 problem-solving skills. This conclusion is obtained based on the results of statistical tests, namely the Wilcoxon Signed Rank Test where the test results from the experimental class and control class have sig. 2 tailed < 0.05, Mann-Whitney U Test which has sig. 2 tailed <0.05, and the mean difference test which shows an increase in the experimental class of 28.05 and in the control class of 11.39 which shows that learning using RME-based LKPD is more effective in improving students\u27 problem-solving skills than learning without using RME-based LKPD
Implementation Of Dynamic Program In Determining The Optimum Path In The Distribution Of Pertamina Chemical & Agrochemical Lubricating Oil With Forward Recursive Equation PT.Pola Raya Jaya Sakti
Get PDF Pola Raya Jaya Sakti is a company engaged in the distribution of Pertamina Kimia & Agrochemical Lubricants. In its operations, this company is faced with the challenge of determining the optimum route in the lubricant oil distribution process in order to optimize production efficiency and reduce production costs. Based on research using a dynamic program with a Forward Recursive Equation, namely A → C → D → E → H → I → K → L → N → O → Q → R → S, where the sequence of locations is Jln. Sampali Road No 151 → Jln. Kesuma → Jln.Letda Sujono → Jln. Padang → Jln. Panglima Denai → Flyover Amplas → Tanjung Morawa → Lubuk Pakam → Tebing Tinggi → Ring Road Lima Puluh → Jln.Perintis Kemerdekaaan → Simpang Kawasan Ekonomi Khusus KEK Sei Mangkei → PT. Unilever Oleochemical Indonesia. The total distance is A+ C + E + H + I + L + N + O + Q + R = 0 + 8.5 km + 7.3 km + 4.4 km + 13 km + 70 km + 50 km + 16 km + 9.5 km+ 3 km = 181.7 km
Translating Causative Have and Get: A Comparative Study between Google Translate Translation and Human Translation
Get PDFTechnological advances have made the ability to translate no longer exclusively belong to humans. Today, machine translation has turned into a tool with superior performance to convert text between languages without the need for human intervention. One of the translation research foci is the studies of causative translation, especially from English to several other languages. Yet, it might be interesting to compare the translation of that topic by human and machine translation. This study investigates the comparison of Google Translate and humans in terms of causative translation from English into Indonesian. The data were obtained from six English novels and their translations in Indonesian. To analyze the data, 100 clauses with causative have and get were selected from English novels and translated by Google Translate into Indonesian. The result showed that the translation and strategies used between Google Translate of causative have and get had similarity with human translation in relation to causative-to-causative translation. Through the investigation, the result is expected to be beneficial for further studies in the translation of causative have and get related to their translations into Indonesian analytic or morphological causative. Furthermore, the result of strategies compared is expected to be beneficial to the translation study regarding machine and human translation in causative, especially from English into Indonesian
KAJIAN FENOMENOLOGI PADA PENELITIAN BAHASA
Get PDFFenomenologi, dikonseptualisasikan oleh Edmund Husserl, berpusat pada pengalaman subjektif individu saat mereka terlibat dengan dan memanfaatkan bahasa (Husserl, 2012). fenomenologi berfokus pada bagaimana bahasa dipahami dan dialami oleh individu (Bonyadi, 2023). Pendekatan ini menghindari generalisasi kuantitatif dan lebih mengedepankan eksplorasi kualitatif atas makna dan persepsi bahasa oleh penutur (Ritunnano et al., 2023). Digunakan untuk menggali pengalaman subjektif pengguna bahasa, dengan fokus pada makna yang dihasilkan individu dalam penggunaan bahasa. Metode ini sering melibatkan teknik seperti wawancara mendalam dan analisis naratif, yang memungkinkan peneliti untuk memahami bagaimana individu membentuk makna melalui bahasa. Pendekatan fenomenologis dalam analisis historis bahasa menekankan pengalaman subjektif individu, menawarkan wawasan tentang bagaimana konteks pribadi dan sosial membentuk pemahaman bahasa. Fokus fenomenologi pada pengalaman subjektif sangat relevan dalam memahami penggunaan bahasa dalam konteks sejarah, seperti pengaturan kolonial, di mana dominasi budaya memainkan peran pentin
HEMIPARESIS SINISTRA PADA ANAK TUBERKULOSIS MENINGITIS: LAPORAN KASUS: SINISTIC HEMIPARESIS IN CHILDREN WITH TUBERCULOSIS MENINGITIS: A CASE REPORT
No full textTingginya angka morbiditas serta mortalitas Tuberkulosis (TB) menjadikannya sebagai isu kesehatan global. Di dunia, Indonesia menempati urutan ketiga tertinggi dalam prevalensi TB, setelah India serta Tiongkok, dimana meningitis TB di Indonesia meliputi 1-2% dari semua kasus TB, sedangkan TB milier menyumbang 1% dari seluruh kasus TB. Meningitis TB dapat terjadi secara bersamaan dengan TB milier. Manifestasi klinis meningitis TB seperti demam, hilang nafsu makan, kelumpuhan saraf kranial, hemiparesis, paraparesis, dan kejang. Hemiparesis meliputi 4% dari manifestasi klinis meningitis TB. Kami menyajikan sebuah kasus meningitis TB pada anak usia 15 tahun yang dirawat di Rumah Sakit Bhayangkara Tk. I Pusdokkes Polri, Jakarta, Indonesia dengan lemah pada tungkai atas dan bawah sebelah kiri, demam, sakit kepala, mual muntah, nafsu makan menurun, dan riwayat demam, batuk dan penurunan berat badan. Hasil laboratorium menunjukkan hiponatremia, hipokloremia dan uji tuberkulin positif. Hasil rontgen dada menunjukkan TB milier dan CT scan kepala dengan kontras menunjukkan meningitis. Selama perawatan mendapat obat anti tuberkulosis (OAT) dengan steroid dan terdapat perbaikan fungsi motorik
ANALISIS SISTEM INFORMASI AKUNTANSI BERBASIS APLIKASI ONLINE PADA UMKM (STUDI KASUS PADA KOPI GO)
Get PDFThis study aims to examine the implementation of an online application-based accounting information system in SMEs (Small and Medium Enterprises). This research uses a qualitative method, employing observation and interviews. Based on the research conducted, the researchers found that there are elements of an online application-based accounting information system in Kopi Go\u27s SME. The company has digitalized its financial record-keeping using a cloud-based system called Olsera.com. This application serves as a transaction and financial management tool. The study identified several challenges that need to be addressed, some of which were effectively handled. Overall, the Olsera system is adequate to accommodate the financial record-keeping and accounting needs of Kopi Go\u27s business.
Keywords: Accounting Information System, Business Cycle, UMK
PENGARUH DISIPLIN KERJA DAN MOTIVASI TERHADAP KINERJA KARYAWAN MJ PRODUCT
Get PDFThese researched aim to analyze influence of work disciplines and motivation on the performances of MJ Product employee. The research methods use is quantitative, descriptive in nature. Data was collected through questionnaires distributed to 30 employees. Analysis was carried out using primarlly data which was collected through observations, interview and distributing questionnaires. Analyst was carried out use the Statistically Products and Services Solution (SPSS) software tool versions 25. The data analyst techniques in this research use multiple linear regressions. The research result show that work disciplines and motivations have a positive and significancy influence on employee performances, both partially and simultaneously. Base on result of the hypothesis of the simultaneous influence of work disciplines and motivations on employee performances, a coefficients of determination value of 87.5% was obtained. It may be conclude that work discipline and motivation influence employee performance at MJ Product. So it may be conclud that work disciplines and motivations influence employee performances at MJ Product.
Keywords: Work Discipline, Motivation, Employee Performance