Online Journals Universitas Kristen Indonesia
Not a member yet
2989 research outputs found
Sort by
EXPLORING THE NEXUS OF CONFLICT MANAGEMENT AND ORGANIZATIONAL PERFORMANCE: INSIGHTS OF EFFECTIVE WORKPLACE DYNAMICS
This research examines the complex link between conflict management, organizational performance, and successful workplace dynamics. Conflict within businesses is unavoidable; nonetheless, how it is handled has a substantial influence on overall performance and the quality of workplace relationships. Drawing from relevant literature and theoretical frameworks, this study investigates many aspects of conflict management methods and their consequences for organizational performance. The investigation begins by explaining the importance of conflict resolution in the context of organizational performance. It emphasizes the negative impact of unresolved disagreements on increased productivity, employee morale, and company culture. It emphasizes the need to foster open communication lines, develop clear dispute-resolution procedures, and nurture a culture of respect and empathy. The study underscores the importance of leadership in setting the tone for conflict resolution, highlighting managers\u27 need to serve as facilitators of constructive discourse and advocates for corporate values. Conflict management affects organizational performance measures such as collaboration, competing, Competing, avoiding, and accommodation. It demonstrates the link between successful conflict management and Organizational Performance in the workplace and its impact on increased team cohesiveness, innovation, and flexibility. Organizations can achieve long-term success by reducing interpersonal conflict and fostering a supportive work environment. this study calls for comprehensive knowledge of conflict management as an essential component of workplace effectiveness. Organizations may successfully traverse hurdles and prosper in today\u27s changing business world by using proactive conflict management solutions based on empathy, teamwork, and shared purpos
Occupational Accident Risk Analysis in the Production Process of Barokah Furniture Industry Pasuruan Using FMEA (Failure Mode and Effect Analysis) and FTA (Fault Tree Analysis) Methods
This study aims to analyze occupational accident risks in the production process at Barokah Furniture Pasuruan using the Failure Mode and Effect Analysis (FMEA) and Fault Tree Analysis (FTA) methods. The furniture industry involves various potential hazards in its production process, such as the use of cutting tools, dust exposure, and high-risk manual work techniques, necessitating a systematic evaluation to minimize workplace accidents. The FMEA method is used to identify and prioritize risks based on the Risk Priority Number (RPN), calculated from a combination of severity, occurrence, and detection. The analysis results identified 20 failure modes, with the three primary risks having the highest RPN: cuts from saw blades (RPN=250), respiratory issues due to excessive dust (RPN=196), and hand injuries from the use of manual planers and machine knives (RPN=180). Furthermore, a Fault Tree Analysis (FTA) was conducted to map the root causes of each priority failure mode. Based on the analysis, it was found that the main causes of workplace accidents at Barokah Furniture include the absence of safe working SOPs, lack of personal protective equipment (PPE), risky manual work techniques, and minimal control over dust hazards. Recommended improvements include the creation of written SOPs, provision of auxiliary tools and PPE, installation of dust extraction systems, and safety training for all employees. This research is expected to serve as a reference for the company to continuously improve its occupational safety and health systems.This study aims to analyze occupational accident risks in the production process at Barokah Furniture Pasuruan using the Failure Mode and Effect Analysis (FMEA) and Fault Tree Analysis (FTA) methods. The furniture industry involves various potential hazards in its production process, such as the use of cutting tools, dust exposure, and high-risk manual work techniques, necessitating a systematic evaluation to minimize workplace accidents. The FMEA method is used to identify and prioritize risks based on the Risk Priority Number (RPN), calculated from a combination of severity, occurrence, and detection. The analysis results identified 20 failure modes, with the three primary risks having the highest RPN: cuts from saw blades (RPN=250), respiratory issues due to excessive dust (RPN=196), and hand injuries from the use of manual planers and machine knives (RPN=180). Furthermore, a Fault Tree Analysis (FTA) was conducted to map the root causes of each priority failure mode. Based on the analysis, it was found that the main causes of workplace accidents at Barokah Furniture include the absence of safe working SOPs, lack of personal protective equipment (PPE), risky manual work techniques, and minimal control over dust hazards. Recommended improvements include the creation of written SOPs, provision of auxiliary tools and PPE, installation of dust extraction systems, and safety training for all employees. This research is expected to serve as a reference for the company to continuously improve its occupational safety and health systems
PENGARUH WAKTU ARTIFICIAL AGING TERHADAP STRUKTUR KRISTAL KERAPATAN DISLOKASI DAN KEKERASAN PADA PADUAN AL 7040
ABSTRAKPenelitian sintesis paduan Aluminium (7040) dengan metode metalurgi butiran dan proses T6. Data pengaruh waktu artificial aging terhadap struktur kristal, ukuran kristal, kerapatan dislokasi, regangan kisi, dan kekerasan dengan proses solid solution pada suhu 550 oC selama 1 jam, didinginkan hingga mencapai suhu ruang menggunakan udara bebas dan selanjutnya proses artificial aging dengan holding time 1, 24 dan 30 jam pada suhu 200 oC. Setelah itu didinginkan hingga mencapai suhu ruang menggunakan udara bebas. Kekerasan paduan aluminium 7040 tanpa perlakuan panas sebesar 20,118 HBN dan mencapai kekerasan maksimum pada holding time 1 jam sebesar 23,035 HBN, karena terbentuk presipitat (endapan) Mg2Si dan MgZn2. Ukuran kristal terbesar dan terkecil pada bidang indeks Miller (2 0 0), dengan holding time 30 dan 24 jam sebesar 23,94550 nm dan 3,4405 nm. Densitas dislokasi terbesar dan terkecil pada bidang indeks Miller (2 0 0), dengan holding time 24 dan 30 jam sebesar 0,08448 garis/mm2 dan 0,00174 garis/mm2. Regangan kisi mikro terendah dan terbesar bidang indeks Miller (3 1 1) holding time 30 jam yaitu 3,78% dan bidang indeks Miller (1 1 1) holdingtime 24jam yaitu 27,9%.Kata Kunci: Paduan Al 7040, metalurgi butiran, XRD, T6, artificial aging
ABSTRACTResearch synthesis of Aluminum alloy (7040) with metallurgical methods of granules and T6 processes. Data on the effect of artificial aging time on crystal structure, crystal size, dislocation density, lattice strain, and hardness with solid solution process at 550 oC for 1 hour, cooled to reach room temperature using free air and then artificial aging process with holding time of 1, 24 and 30 hours at 200 oC.After that it is cooled until it reaches room temperature using free air.Aluminum alloy hardness 7040 without heat treatment amounted to 20,118 HBN and achieved maximum hardness at a holding time of 1 hour of 23,035 HBN, due to the formation of presipitat (sediment) Mg2Si and MgZn2.The largest and smallest crystal size in the Miller index field (2 0 0), with a holding time of 30 and 24 hours of 23.94550 nm and 3.4405 nm. The largest and smallest dislocation density in the Miller index field (2 0 0), with a holding time of 24 and 30 hours of 0.08448 lines/mm2 and 0.00174 lines/mm2.The lowest and largest micro lattice strain of the Miller index (3 1 1) holding time of 30 hours is 3.78% and miller index field (1 1 1) holding time 24 hours is 27.9 %.Keywords: Al 7040 alloy, powder metallurgy, XRD, T6, artificial agin
Analisis Pengaruh Suhu T6 dan Artificial Age Terhadap Kekerasan, dan Struktur mikro Paduan Alumunium
ABSTRAK
Telah dilakukan analisis pengaruh suhu T6 dan artificial age terhadap kekerasan, dan struktur mikro pada paduan alumunium. Aluminium adalah salah satu bahan yang memiliki karakter yang berpotensi cocok untuk dijadikan opsi, namun memiliki kekurangan pada kekuatannya. Untuk itu dilakukan percobaan perlakuan panas T6 terhadap paduan Al 5052 untuk memperbaiki karakteristik kekuatannya. Proses T6 dimulai dengan dipanaskan solid solution pada suhu diatas 500 °C ditahan selama 1 jam, kemudian dilakukan pendingan cepat melalui media air, serta proses penuaan buatan (artificial aging) dengan variasi suhu 140 °C, 170 °C dan 200 °C selama 30 menit. Setelah proses pendinginan, spesimen ini kemudian dilakukan proses metalografi. Karakterisasi kekerasan dengan skala Vickers, diperoleh bahwa paduan Al 5052 tanpa perlakuan panas memberikan angka kekerasan sebesar 86,10 HV. Sampel uji Al 5052 yang mengalami perlakuan panas memberikan nilai kekerasan tertinggi sebesar 144,90 HV diperoleh pada kombinasi temperature aging 200 °C waktu aging 30 menit, terjadi kenaikan nilai kekerasan sebesar 68 %. Pengujian struktur mikro dengan Scanning Electron Microscope (SEM), menunjukkan bahwa pada sampel uji Al 5052 tanpa perlakuan panas terlihat matriks Al yang dominan, sedangkan pada sampel uji Al 5052 setelah melalui proses T6 memunculkan fasa MgZn2 yang meningkatkan nilai kekerasan (sifat mekanik) secara signifikan. Hal ini menunjukkan bahwa penambahan kadar Mg dalam jumlah yang besar pada paduan Alumunium juga dapat menaikkan kekuatan tarik. Pengujian ukuran kristal, kerapatan dislokasi, dan regangan kisi mikro dengan X-Ray Diffraction (XRD), menunjukkan bertambahnya ukuran kristal seiring dengan lamanya waktu pemanasan penuaan buatan. Sedangkan densitas dislokasi dan regangan kisi meningkat selama dengan variasi suhu 140 °C, 170 °C dan 200 °C.Kata Kunci: Paduan Alumunium 5052, metalurgi butiran, XRD, T6, artificial aging
ABSTRACT
An analysis of the effect of T6 temperature and artificial age on hardness and microstructure of aluminum alloys has been carried out. Aluminum is a material that has a character that is potentially suitable as an option, but it lacks its strength. For this reason, a T6 heat treatment experiment was carried out on Al 5052 alloy to improve its strength characteristics.The T6 process begins with the solution heated at temperatures above 500 ° C sent for 1 hour, then is carried out quickly through the air media, as well as the process of artificial aging (artificial aging) with variations in temperature of 140 ° C, 170 ° C and 200 ° C for 30 minute. After the recovery process, the specimen is then subjected to a metallographic process. Hardness characterization by Vickers scale, obtained Al 5052 alloy without heat preparation gives a defense value of86.10 HV. The Al 5052 test sample which requires the completion of heat gives the highest value of144.90. HV obtained at a temperature combination of 200 ° C aging time of 30 minutes, an increase in hardness value of 68 %. Microstructure testing using Scanning Electron Microscope (SEM) shows that the Al 5052 test sample without testing shows the dominant Al matrix, while the Al 5052 test sample after going through the T6 process raises the MgZn2 phase which significantly increases the test value (mechanical properties). This amount adds to the amount of Mg in large quantities in aluminum alloys can also increase the tensile strength. Tests of crystal size, dislocation density, and micro lattice strain with X-Ray Diffraction (XRD), showed an increase in crystal size with the length of time of artificial aging heating. While the density of dislocation and lattice strain increases during variations in temperature of 140 ° C, 170 ° C and 200 ° C.Keywords: Al-5052 alloy, artificial aging, T6, hardness, Vickers, crystal structure, crystal size, dislocation density, micro lattice strain
THE EFFECT OF USING INSTAGRAM SOCIAL MEDIA ON FULFILLING THE INFORMATION NEEDS OF FOLLOWERS @INFOBEKASI
This research aims to see whether there is an influence of the use of Instagram social media on fulfilling the information needs of @infobekasi followers. The method used is a quantitative method with data collection techniques using questionnaires. This research uses a descriptive approach with the aim of describing the research object or research results used to explain the influence of the use of Instagram social media on meeting the information needs of @infobekasi followers. Based on the research results, it was found that the use of Instagram social media has a positive and significant effect on fulfilling the information needs of @infobekasi followers, indicated by a significance level of 0.000 < 0.05, so H0 is rejected and Ha is accepted. The magnitude of the influence is obtained from the coefficient of determination value of 0.331. This value shows that 33.1% of fulfilling the information needs of @infobekasi followers is influenced by the use of Instagram social media, while the remaining 66.9% is influenced by other factors not examined in this research
STUDENTS\u27 MISCONCEPTIONS IN SOLVING STORY PROBLEMS OF TWO-VARIABLE LINEAR EQUATION SYSTEMS ASSESSED FROM NUMERACY LITERACY
Misconceptions in solving story problems involving the System of Linear Equations of Two Variables (SPLDV) are often a challenge for students. This research aims to identify the types of misconceptions experienced by students of grade VIII of Kasih Yobel Junior High School in Singkawang in solving SPLDV story problems, which are studied from the perspective of numeracy literacy. This research used descriptive qualitative method involving six students as research subjects. Data were collected through diagnostic tests and interviews to identify misconceptions based on numeracy literacy components: understanding, use, interpretation, and communication. The results showed that students experienced several types of misconceptions, especially in the translation of story problems into mathematical form, the use of strategies/methods, and calculations. The misconceptions were caused by students\u27 lack of understanding of the basic concepts of SPLDV and inability to apply mathematical symbols and operations correctly. The discussion of the research results emphasizes the importance of learning approaches that strengthen students\u27 numeracy literacy, especially in terms of understanding concepts and applying effective strategies. The conclusion of this study shows that improving numeracy literacy needs to be a priority in mathematics teaching to reduce misconceptions and improve students\u27 ability to solve SPLDV story problems
Analysis of the quality of biobriquettes from salak skin with starch adhesive
This study aims to analyze the quality of biobriquettes made from salak skin with starch adhesive. Biobriquettes are one of the alternative fuel solutions that are environmentally friendly and can reduce organic waste. The analysis method used in this study is qualitative analysis. Salak fruit produces waste in the form of salak skin which is brownish and slightly prickly, then the salak seeds have a very hard texture which is black and brown. Salak seeds have a very hard texture so they are suitable as a basic ingredient for making briquettes The research method includes:the preparation stage of raw material for salak skin, carbonization stage of salak skin, adhesive material preparation stage and biobriquette quality analysis. From the research results, it can be concluded that both biobriquette samples, namely sample A (without adhesive) and sample B (with adhesive) have met the requirements of SNI No. 01-6235-2000 concerning charcoal biobriquettes
Resistensi Treponema pallidum terhadap Makrolida Sebagai Pengobatan Alternatif Sifilis
Treponema pallidum (T. pallidum) is a pathogen that causes syphilis, which is transmitted through contact with active lesions of a sex partner or an infected pregnant woman to her fetus. Despite various aggressive efforts and pharmacological treatments, syphilis has persisted and continues to be a health problem, even experiencing an increase in the prevalence of the disease in recent years. This article is based on literature studies on various research published online, especially on Google Scholar, ScienceDirect, Scopus, Pubmed, and other scientific journals. The studies were then synthesized into comprehensive information regarding specific resistance mechanisms of T. pallidum bacteria to several antibiotics. Macrolide, especially azithromycin, is an alternative treatment that is most often used in the treatment of syphilis in addition to first-line antibiotics, benzathine penicillin G injection. The use of its single oral dose, its effectiveness equivalent to penicillin, cost-effectiveness, and rare side-effect profile made azithromycin widely used in the treatment of syphilis in various regions throughout the world until treatment failures were reported. The mechanism of resistance to macrolides occurs due to modification of the antibiotic target site (binding site) caused by mutations in the 23S rRNA gene. The increase in cases and the emergence of clinically significant resistance to alternative antibiotics in some countries emphasize the urgent need for vigilance. Knowledge and understanding of the resistance mechanism of Treponema pallidum to antibiotics, especially the macrolides group, is essential in line with the increasing resistance of Treponema pallidum to antibiotics globally.Treponema pallidum merupakan patogen penyebab penyakit Sifilis yang ditularkan melalui kontak dengan lesi aktif dari pasangan seks atau dari wanita hamil yang terinfeksi ke janinnya. Meskipun dengan berbagai upaya agresif dan pengobatan farmakologis, sifilis ma
Treponema pallidum (T. pallidum) is a pathogen that causes syphilis, which is transmitted through contact with active lesions of a sex partner or an infected pregnant woman to her fetus. Despite various aggressive efforts and pharmacological treatments, syphilis has persisted and continues to be a health problem, even experiencing an increase in the prevalence of the disease in recent years. This article is based on literature studies on various research published online, especially on Google Scholar, ScienceDirect, Scopus, Pubmed, and other scientific journals. The studies were then synthesized into comprehensive information regarding specific resistance mechanisms of T. pallidum bacteria to several antibiotics. Macrolide, especially azithromycin, is an alternative treatment that is most often used in the treatment of syphilis in addition to first-line antibiotics, benzathine penicillin G injection. The use of its single oral dose, its effectiveness equivalent to penicillin, cost-effectiveness, and rare side-effect profile made azithromycin widely used in the treatment of syphilis in various regions throughout the world until treatment failures were reported. The mechanism of resistance to macrolides occurs due to modification of the antibiotic target site (binding site) caused by mutations in the 23S rRNA gene. The increase in cases and the emergence of clinically significant resistance to alternative antibiotics in some countries emphasize the urgent need for vigilance. Knowledge and understanding of the resistance mechanism of Treponema pallidum to antibiotics, especially the macrolides group, is essential in line with the increasing resistance of Treponema pallidum to antibiotics globally.
sih bertahan dan terus menjadi salah satu masalah kesehatan bahkan mengalami peningkatan prevalensi penyakit dalam beberapa tahun belakangan ini. Penulisan artikel ini didasarkan pada studi literatur dan review artikel ilmiah baik jurnal maupun penelitian yang diterbitkan secara online terutama di Google scholar, ScienceDirect, Scopus, Pubmed, dan media online lain yang digunakan untuk publikasi berbagai jurnal ilmiah. Antibiotik golongan makrolida terutama azitromisin, merupakan pengobatan alternatif yang paling sering digunakan dalam pengobatan sifilis selain antibiotik lini pertama yaitu benzathin penisilin G injeksi. Mekanisme resistensi terhadap makrolida terjadi akibat modifikasi situs target antibiotik (binding site) yang disebabkan mutasi pada gen 23S rRNA. Peningkatan kasus sifilis dan resistensi yang signifikan secara klinis terhadap beberapa antiobiotik alternatif di beberapa negara, menekankan kebutuhan mendesak untuk kewaspadaan. Pengetahuan dan pemahaman mekanisme resistensi Treponema pallidum terhadap antibiotik golongan makrolida, sangat penting seiring dengan peningkatan resistensi Treponema pallidum terhadap antibiotik secara global.
Kata kunci: Sifilis, Treponema pallidum, resistensi, makrolid
Mengeksplorasi Strategi yang Digunakan oleh Guru Bahasa Inggris dalam Pengajaran Menulis untuk Siswa Sekolah Menengah Pertama di Kota Bengkulu
Writing is a fundamental skill in English language learning that requires the application of effective instructional strategies. Various strategies have been implemented in writing classrooms, including writing strategies, summarization, collaborative writing, specific product goals, word processing, sentence combining, prewriting, inquiry activities, the process writing approach, the study of models, and writing for content learning. This study aimed at examining the writing strategies employed by English teachers in junior high schools. To achieve the objective, interviews were conducted with two experienced junior high school English teachers. The interview questions were developed based on the writing instruction framework proposed by Graham and Perin (2007). The data was analyzed descriptively using the content analysis technique. The findings reveal that teachers primarily utilize summarization, collaborative writing, sentence combining, inquiry activities, and the study of models in their writing instructions. Additionally, the teachers emphasized that these strategies are essential and effective in enhancing students\u27 writing skills
Exploring Master\u27s Students’ Self-Efficacy in Speaking English During Hybrid Learning
In the post-pandemic situation, where hybrid learning has become prevalent, effective communication between lecturers and students is very important. Self-efficacy is a crucial factor that affects their communication or speaking in class. Nowadays, research on students’ self-efficacy in speaking has received considerable attention among researchers. However, Self-efficacy in hybrid learning, particularly with a focus on master’s students, remains an underexplored area of research. To fill in the gaps, the researchers aim to know what factors and challenges influence students’ self-efficacy in speaking during hybrid learning. The participants were six English Education Master’s students at Sanata Dharma University. Guided by Bandura’s Social Cognitive and Self-Regulation Theories, this research employed a descriptive qualitative method. Data was collected through in-depth interviews and observations and analyzed using thematic analysis via QDA Miner Lite. The steps consist of transcribing, coding, grouping, and then interpreting the data. The findings showed that some factors that influence students\u27 self-efficacy in speaking are motivation, learning, social environment, and role models. On the other hand, factors that inhibit students\u27 self-efficacy in speaking, namely speaking anxiety, low confidence level, and low content mastery. The research limitations include six participants from specific study programs, limiting generalizability to other contexts or institutions