Petra Christian University, Surabaya, Indonesia: Peer-Reviewed Scientific e-Journal
Not a member yet
3815 research outputs found
Sort by
Pengaruh Parameter Friction Welding untuk Aluminium dan Tembaga: Tinjauan Literatur
No full textFriction welding merupakan metode pengelasan dalam fasa padat dimana penyambungan kedua logam yang dilas dihasilkan dari panas akibat gesekan dan tekanan. Friction welding terdiri dari beberapa metode yaitu friction stir welding, linear friction welding dan continuous drive friction welding. Tinjauan literatur ini membandingkan beberapa metode las gesek, cacad las yang dapat muncul diantara metode las gesek tersebut dan metode friction welding yang paling sesuai untuk penyambungan poros pompa yang berbahan Aluminium dan Tembaga dan memiliki penampang berbentuk lingkaran karena penyambungan antara Aluminium dan Tembaga tidak dapat dilakukan dengan menggunakan pengelasan fusi. Salah satu alasannya adalah karena perbedaan temperatur lebur yang jauh antara Aluminium dan Tembaga, sekitar 400 oC. Dari studi literatur didapatkan informasi bahwa hasil friction welding dapat dipengaruhi oleh kecepatan putar, durasi tekan, gaya aksial tekanan, dan karakteristik material yang digunakan. Dengan menggunakan studi kasus poros pompa, didapatkan bahwa continuous drive friction welding merupakan metode yang paling sesuai untuk menyambungkan material poros berbahan Aluminium dan Tembaga karena distribusi temperatur yang merata di seluruh permukaan sambungan las. Kondisi ini akan menghasilkan mikrostruktur dan kualitas sambungan las yang lebih homogen
Leveraging Social Network Analysis for Enhancing Safety Reporting in the Workplace: A Case Study of the IZAT Application
No full textUnsafe Condition Reporting is an important source of information for companies to determine whether the reporting can be identified effectively as the key to reducing work accidents. This research aims to ascertain the Social Network Analysis visualization network in the context of reporting unsafe conditions in the IZAT application and categorizing data processing outcomes. The findings revealed that the data collection process yielded 26,658 data items. The Unsafe Condition content comprised 79,667 words, with 2,388 unique words identified. The average number of occurrences per word was 33.36139. Certain network property calculations can be inferred from these results. Then, the word mapping with five related topics was carried out. The results of the categorization of the unsafe condition word mapping can be used as evaluation material for companies to prevent work accidents. In particular, the network visualization results can identify the most discussed topics and social network relationships of reporting in the IZAT application
SIMULASI KONTROL KELEMBABAN DENGAN KONTROLER PID PADA KUMBUNG JAMUR DI URBAN FARMING ALAM SARI PETRA
No full textUrban farming adalah kegiatan bercocok tanam atau beternak secara mandiri di wilayah perkotaan dengan memanfaatkan lahan yang terbatas atau kosong. Urban Farming Alam Sari Petra di pusat kota Surabaya bertujuan untuk mendidik pendidik dan peserta didik tentang pertanian perkotaan dan tanaman organik. Salah satu kegiatan yang dilakukan adalah budidaya jamur tiram. Namun, pengoperasian manual sistem penyiram di kumbung jamur menyebabkan kelembaban yang tidak terkontrol dan pertumbuhan jamur yang tidak optimal. Untuk mengatasi hal ini, diimplementasikan sebuah sistem pengatur kelembaban menggunakan kontroler PID. Permasalahan penelitian ini difokuskan pada bagaimana mempertahankan kelembaban pada tingkat tertentu selama masa inkubasi dan masa panen di kumbung jamur. Pengujian yang dilakukan adalah tuning pid, pengujian kontrol tanpa gangguan, pengujian kontrol dengan gangguan dan pengujian kontrol dengan target kelembaban berbeda. Tahapan pengujian ini bertujuan untuk mengevaluasi kinerja dari sistem. Berdasarkan hasil pengujian, dapat disimpulkan bahwa penggunaan kontroler PID dalam mengontrol kelembaban hingga berhasil mencapai tingkat kelembaban yang stabil dan sesuai dengan set point yang diminta
Risk Analysis of Modest Housing Projects Scheduling using Monte Carlo Simulation
No full textIt is crucial to address uncertainties in the construction project scheduling to mitigate delays. Probabilistic simulation offers a viable alternative method. This study examined the relationship between project duration and delay risks, as well as identified the most influential activities for modest housing projects using Monte Carlo Simulation. The simulation analysis, which included 2547 iterations, found that, on average, it took 87.39 days to complete a 54-type modest house project, with the shortest and longest durations being 44 and 149 days, respectively. The sensitivity analysis revealed that finishing works, such as painting, doors/windows installation, and cleaning, had the highest uncertainty and significantly affected the project duration. Additionally, the severity analysis showed that wall work was the most impactful activity contributing to delays. Based on these analyses, both finishing works and wall work were identified as the most critical activities significantly influencing the project's completion duration
Finite Element Analysis of The Effect of Fiber Content on The Flexural Strength of SFRC Beams with Steel Rebars
No full textThis research aimed at studying the effect of fiber content on the flexural strength and behavior of steel fiber reinforced concrete (SFRC) beams with steel rebars. The study employed finite element (FE) analysis to simulate the behavior of SFRC beams. The simulation results of the FE model were validated against experimental data. Subsequently, the validated model was utilized to analyze the strength and crack patterns of SFRC beams with steel rebars in comparison to conventional RC concrete beams without fibers. The parametric study indicates an average 9% increase in RC beam capacity for every 1% increment in fiber volume fraction. Moreover, this study reveals more substantial effects of steel fibers on beams with low reinforcement ratios. Crack analysis shows that cracks in the SFRC beams are distributed more evenly compared to plain RC beams at regions with the same bending moment, indicating enhanced strength to sustain loads, reduced deflection, and improved beam ductility
Housing Attribute Preferences in Bandung City: A Comparison Between Generation X, Y, Z
No full textEach generation encounters distinct social, economic, cultural, and technological contexts specific to their era. Moreover, their lifestyles vary, resulting in disparate housing preferences. This study analyzes five housing attribute preferences of Generation X, Generation Y, and Generation Z: Economic attribute, location and accessibility attribute, physical attribute, environment attribute, and social attribute. The research uses a stated preference approach. The study uses a mixed method and a stated preference approach while collecting data by online questionnaire. Three analytical techniques are employed in this research: correspondence analysis to identify differences in dwelling type preferences among generations, PCA and FA to identify the underlying housing attribute influencing housing preferences, and ANOVA to analyze housing attribute dimensions with significant differences among generations. The analysis result reveals that each generation tends to prefer Landed Housing. The housing attribute dimensions that are the main priority among generations are Utilities, Infrastructure, and Environmental Quality. Meanwhile, significant differences in housing preferences between Generation X, Generation Y, and Generation Z are found in the space comfort and social interaction dimensions
PERSONAL KNOWLEDGE MANAGEMENT AND EMPLOYEE PERFORMANCE NEXUS WITH THRIVING AT WORK AS A MEDIATING FACTOR IN A PUBLIC ORGANIZATION CONTEXT
No full textThis study examined the relationship between personal knowledge management and employee performance by accounting for the mediational effect of thriving at work. The study used a cross-sectional survey to obtain data from 204 academic staff randomly sampled from state-owned universities in Delta State, Nigeria. The partial least squares method was applied to treat and analyze the data collected with the help of SmartPLS 4 software. The analysis revealed that knowledge sharing, creation, and acquisition were positively and significantly related to employee performance. Furthermore, the mediation role of thriving was also confirmed. In conclusion, personal knowledge management activities comprising knowledge sharing, knowledge creation, and knowledge acquisition, directly and indirectly, affected employee performance through thriving at work. The study recommended that public managers should incentivize and support the personalization of knowledge management activities across organizational levels, as it benefited thriving at work and employee performance, especially its adaptive aspects. Furthermore, personal knowledge management and thriving at work were driven or guided by knowledge, making organizations need to curate interventions to improve knowledge
Pengaruh Experiential Marketing Terhadap Kepuasan Konsumen di Welabajo Hotel Labuan Bajo
No full textPenelitian ini mengeksplorasi penerapan strategi experiential marketing pada Welabajo Hotel di Labuan Bajo, sebuah budget hotel. Dengan fokus pada industri perhotelan kelas ekonomi, peneliti bertujuan meningkatkan kepuasan konsumen melalui pendekatan ini. Penelitian ini mengukur 4 dari 5 dimensi experiential marketing, yaitu sense, feel, think dan relate. Metode penelitian dengan penyebaran kuesioner pada konsumen Welabajo Hotel dengan menggunakan alat analisis data regresi linier berganda. Sampel yang dilibatkan pada penilitian ini sebanyak 125 responden yang menginap di Welabajo Hotel. Analisis data perilaku konsumen, dan evaluasi dampak strategi experiential marketing terhadap persepsi konsumen terhadap Welabajo Hotel. Temuan penelitian ini menunjukkan bahwa sense, feel, think mempunyai pengaruh signifikan terhadap kepuasan konsumen di Welabajo Hotel. Sedangkan relate mempunyai pengaruh namun tidak signifikan terhadap kepuasan konsumen Welabajo Hotel. Temuan penelitian ini diharapkan dapat memberikan wawasan bagi industri perhotelan budget tentang potensi penerapan strategi experiential marketing untuk meningkatkan kepuasan konsumen, dalam konteks anggaran yang terbatas. Implikasi praktis dari penelitian ini dapat membantu hotel-hotel serupa meningkatkan daya saing dan memberikan nilai tambah yang signifikan bagi para konsumen
Preferensi Generasi Z Surabaya dalam Memilih Tempat Dining-Out
No full textGenerasi Z merupakan salah satu generasi yang potensial di bisnis restoran, oleh karena itu penting bagi para pebisnis khususnya di bidang food and beverages di Surabaya untuk memahami preferensi generasi Z dalam memilih tempat makan. Penelitian ini bertujuan untuk melihat atribut restoran yang penting bagi generasi Z dalam memilih tempat makan. Teknik analisa data yang digunakan dalam penelitian ini adalah statistic deskriptif dan Confirmatory Factor Analysis (CFA). Hasil dari penelitian ini menunjukan facilities related attributes adalah atribut yang paling penting bagi generasi Z Surabaya dalam memilih tempat makan. Selain itu atmosphere and ambiance related attributes, food and drink related attributes, image related attributes, location related attributes dan price related attributes, memiliki kontribusi terhadap preferensi generasi Z Surabaya dalam memilih tempat makan
PENGARUH BRAND FAMILIARITY DAN PERCEIVED NOSTALGIA TERHADAP POST-PURCHASE INTENTION JAJAN TRADISIONAL SRABI NOTOSUMAN PADA GENERASI MILLENNIAL DAN GEN Z
No full textStudi terdahulu menunjukkan bahwa brand familiarity dan perceived nostalgia berpengaruh positif terhadap post-purchase intention. Akan tetapi, tidak banyak studi yang membahas pengaruh tersebut untuk kategori jajan tradisional, khususnya di Indonesia yang mempunyai beragam jenis jajan tradisional. Untuk menelaah celah penelitian tersebut, penelitian ini mengangkat salah satu jajan tradisional Indonesia, yaitu Srabi Notosuman. Data penelitian berasal dari 186 konsumen Srabi Notosuman di Kota Solo dan dianalisis menggunakan PLS-SEM. Hasil penelitian menunjukan brand familiarity dan perceived nostalgia berpengaruh positif terhadap post-purchase intention. Tidak ditemukan efek moderasi lintas generasi pada pengaruh tersebut, sehingga dapat disimpulkan pengaruh brand familiarity dan perceived nostalgia terhadap post-purchase intention berlaku secara universal untuk Millennial dan Gen Z, setidaknya dalam kasus Serabi Notosuman