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All Journal Jurnal Keuangan dan Perbankan Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Hospitality dan Manajemen Jasa Jurnal Teknobisnis Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Prosiding Seminar Nasional Sains dan Teknologi Terapan Jurnal Manajemen Pemasaran Share : Journal of Service Learning Petra International journal of Business Studies (IJBS) EKUITAS (Jurnal Ekonomi dan Keuangan) Jurnal Senopati : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering Journal of Applied Sciences, Management and Engineering Technology (JASMET) Aletheia Christian Educators Journal Prosiding Seminar Nasional Teknologi Industri Berkelanjutan Jurnal Riset Ekonomi, Manajemen, dan Bisnis
Zeplin Jiwa Husada Tarigan
Universitas Kristen Petra
Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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The Effect of Information Management Capability, Collaboration, and Supply Chain Resilience on Company Performance James Korompis; Zeplin Jiwa Husada Tarigan; Oviliani Yenty Yuliana
Petra International Journal of Business Studies Vol. 5 No. 2 (2022): DECEMBER 2022
Publisher : Master of Management, School of Business and Management, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ijbs.5.2.227-238

Abstract

A covid-19 pandemic is a significant event that causes supply chain disruption in Indonesia. As a result, the manufacturing sector experienced a significant decline which is indicated by the greatly decreasing Purchasing Manager Index (PMI) in April and May 2020. Therefore, supply chain resilience (SCR) becomes essential for a company to minimize risk, reduce negative impact, and quickly adapt to the business condition. This research aims to analyse the relationship between variables that can increase SCR, namely information management capability (IMC) and collaboration, and the relationship between SCR and company performance. This research was conducted by collecting primary data using questionnaires and analysing the relationship among variables using the PLS-SEM method. This research indicates that IMC and collaboration significantly affect SCR. SCR also has a significant effect on company performance. However, IMC does not significantly impact company performance, while collaboration significantly affects company performance. This research also indicates that collaboration mediates the relationship between IMC toward company performance.
Factors Influencing the Foreign Language Learning Quality: A Study at a Cooperative Education Unit (SPK) School in Surabaya Yuliana Lianto; Ricky Ricky; Zeplin Jiwa Husada Tarigan
Petra International Journal of Business Studies Vol. 5 No. 2 (2022): DECEMBER 2022
Publisher : Master of Management, School of Business and Management, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ijbs.5.2.174-185

Abstract

This research examines the correlation between the Native-Speaking Foreign Language Teachers' Professional Competencies, Teaching Methods, and Attitude Towards Learning in the Foreign Language Learning Quality in a Cooperation Education Unit or Satuan Pendidikan Kerjasama (SPK) in Surabaya. This quantitative research involved 144 students from the fourth, fifth, and sixth grades as the respondents or research participants. The data of this research were analyzed using the Partial Least Square (PLS) on SmartPLS 3.0 application. The results show that the Native-Speaking Foreign Language Teachers' Professional Competencies significantly influenced Teaching Methods. Furthermore, Teaching methods significantly influenced the Attitude Towards Learning, while the Attitude Towards Learning significantly influenced Foreign Language Learning Quality. Teaching Methods have also proven to be a mediator in the influence of Attitude Towards Learning (VAF=0,1965 or 19,65%). Based on the research findings, schools and teachers need to emphasize the professional competencies of native-speaking foreign language teachers and teaching methods to improve the quality of foreign language learning.
The Servant Leadership Effect on Student Engagement Mediated by Student Motivation at "X" Christian Senior High School in Surabaya Damiana Wiwik; Ricky Ricky; Zeplin Jiwa Husada Tarigan
Petra International Journal of Business Studies Vol. 6 No. 1 (2023): JUNE 2023
Publisher : Master of Management, School of Business and Management, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/petraijbs.6.1.102-112

Abstract

This study aims to determine the effect of Servant Leadership (Voluntary Subordination (VS), Authentic Self (AS), Covenantal Relationship (CR), Responsible morality (RM), Transcendental spirituality (TS), Transforming Influence (TI)) on teachers on Student Engagement (SE) mediated by Student Motivation (SM) at "X" Christian Senior High School in Surabaya. This research method is causal-comparative quantitative, and the research respondents are 201 students in the 11th grade of the science study program. Partial Least Square (SmartPLS) version 3.0 is the data analysis method. This indicated that VS significantly affected SE. Authentic Self significantly affected SE. CR didn't significantly affect SE. However, RM significantly affected SE, TS significantly affected SE, and TI significantly affected SE. The mediating variables:  VS, AS, CR, RM, TS, and TI. Furthermore, School management needs to improve their professional relations with students and develop themselves to bring positive changes to students, increasing SE in the learning process.
The Influence of Digital Literacy on Learning Effectiveness Through Classroom Management: Moderating Effect of IT Infrastructure Debby Fransisca Muntu; Oviliani Yenty Yuliana; Zeplin Jiwa Husada Tarigan
Petra International Journal of Business Studies Vol. 6 No. 1 (2023): JUNE 2023
Publisher : Master of Management, School of Business and Management, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/petraijbs.6.1.42-52

Abstract

Digital Literacy is essential in the post-pandemic era. Teachers use Digital Literacy to provide learning materials, conduct the teaching process, and conduct evaluations online. However, Digital Literacy requires adequate information technology infrastructure to produce classroom management and learning effectiveness on an ongoing basis. The study used questionnaires to obtain data on Christian-based schools in Surabaya. The questionnaires were distributed to as many as 363 through a Google form, and 132 were filled out again. Data processing used partial least square. The results showed that digital literacy has an impact on classroom management. Classroom management influences learning effectiveness. Digital literacy affects learning effectiveness through classroom management. Digital Literacy has not influenced classroom management and learning effectiveness with information technology infrastructure as a moderating variable. This research provides a practical contribution for education managers to understand the adjustment of IT infrastructure to make digital literacy the basis for managing class management. In addition, teaching staff must be educated to keep abreast of technological developments to support the teaching process and improve class management. The study enriches the theory of the use of technology in education and interactional education in the classroom.
The Effect of E-Satisfaction on E-Loyalty through Trust in E-Ticketing on Traveloka in Surabaya Djukuw, Gery; Tarigan, Zeplin Jiwa Husada
Jurnal Riset Ekonomi, Manajemen, dan Bisnis Vol. 1 No. 1 (2024): November 2024
Publisher : Universitas Kristen Petra dan Ikatan Sarjana Ekonomi Indonesia Cabang Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research aims to determine the effect of e-satisfaction on e-loyalty through trust in e-ticketing on Traveloka. The population in this research is Surabaya people who are over 18 years old and use credit cards to make transactions on Traveloka. The number of samples I took was 122 respondents. Data analysis using PLS. The variables in this research are e-loyalty as an endogenous variable and e-satisfaction and trust as exogenous variables. The results of data analysis show that e-satisfaction has a significant and positive effect on e-loyalty through trust in e-ticketing on Traveloka.
The Influence of Brand Experience through Customer Satisfaction and Brand Trust on Brand Loyalty in The Samsung Smartphone Brand Tarigan, Zeplin Jiwa Husada; Yobeanto, Kelvin Leonardo
Jurnal Riset Ekonomi, Manajemen, dan Bisnis Vol. 2 No. 1 (2025): Mei 2025
Publisher : Universitas Kristen Petra dan Ikatan Sarjana Ekonomi Indonesia Cabang Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jremb.2.1.19-27

Abstract

This research aims to analyze the influence of brand experience on satisfaction, loyalty, and brand trust among Samsung brand smartphone users. This research involved 163 respondents, consisting of current and former smartphone users. The results of the analysis show that brand experience has a positive influence on satisfaction, brand trust, and loyalty. The higher the user's perceived brand experience, the higher the level of satisfaction, trust, and loyalty to the Samsung brand. Satisfaction has also been proven to positively impact loyalty, where high satisfaction increases user loyalty to Samsung smartphones. In addition, brand trust plays an important role in building customer loyalty, where higher trust in a brand will increase the customer's tendency to remain loyal to using the product. The managerial implications of this research highlight the importance of building user communities on social media to increase customer engagement through sharing positive experiences regarding Samsung features. In addition, effective communication with customers must continue to be strengthened to provide education and resolve various obstacles faced by users, so as to strengthen trust and loyalty to the Samsung brand.
The Effect of Brand Image, Promotion Effectiveness, and Product Quality on Consumer Buying Interest Budi, Aileen Patricia; Tarigan, Zeplin Jiwa Husada
Jurnal Riset Ekonomi, Manajemen, dan Bisnis Vol. 2 No. 2 (2025): November 2025
Publisher : Universitas Kristen Petra dan Ikatan Sarjana Ekonomi Indonesia Cabang Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jremb.2.2.67-77

Abstract

This study aims to analyze the influence of brand image, promotional effectiveness, and product quality on consumer interest in purchasing textbooks from a printing company in Indonesia. The study's background is the increasing competition in the printing industry, which requires companies to strengthen their marketing strategies by improving brand image, effective promotion, and superior product quality. This study uses a quantitative, descriptive approach. Primary data were obtained by distributing questionnaires to 100 respondents who are consumers of printing company products. Data analysis was conducted using SPSS to test the influence of independent variables on the dependent variable via multiple linear regression. The results show that the three independent variables, namely brand image, promotional effectiveness, and product quality, have a positive and significant effect on consumer purchasing interest. Among the three, product quality has the most significant influence on purchasing interest, indicating that consumer perceptions of product quality are a significant factor in purchasing decisions. These findings emphasize the importance for printing companies to continue to maintain product quality, strengthen brand image, and implement effective promotional strategies to increase consumer purchasing interest and expand market share.
The Impact of Chain of Servant Leadership on the Effectiveness of Classroom Instruction Lusi Hapsari Restulingtyas; Ricky Ricky; Zeplin Jiwa Husada Tarigan
Aletheia Christian Educators Journal Vol. 6 No. 2 (2025): OKTOBER 2025
Publisher : Universitas Kristen Petra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/aletheia.6.2.113-123

Abstract

This study examines the influence of principal servant leadership toward teacher servant leadership, which in turn will influence the classroom instruction at A Christian Faith-Based Senior High School in the Southern part of Surabaya. This quantitative research involved 595 students from 18 classes, ranging from 10th grade to 11th grade, and 12th grade. The data in this research were analyzed using Partial Least Squares on the SmartPLS 3.0 application.  The results show that principal servant leadership has a significant effect on teacher servant leadership and classroom instruction. Teacher servant leadership has a significant effect on classroom instruction. Whilst teacher servant leadership was proven to be a partial mediator between principal servant leadership and classroom instruction (VAF=0.4685 or 46,85%). Thus, it is important for schools to pay attention to the development of both principal and teacher servant leadership as they have a significant impact on classroom instruction that eventually will affect students' learning outcomes.
The Influence of Information Technology on Company Performance Through Internal and External Integration Ruth Lovita Surodjo Putri; Zeplin Jiwa Husada Tarigan
Petra International Journal of Business Studies Vol. 8 No. 1 (2025): JUNE 2025
Publisher : Master of Management, School of Business and Management, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/petraijbs.8.1.98-108

Abstract

Information technology is essential for companies to make informed decisions that support internal business processes and external collaboration, thereby improving overall company performance. The research collected data from 105 manufacturing companies in East Java. The research sample was determined using judgmental sampling with respondents who were at least staff level and had become permanent company employees. Data analysis was used with SEM-PLS. Implementing information technology in manufacturing companies impacted internal and external supply chain integration. Internal supply chain integration, combined with internal data integration, is running smoothly and in real-time, which positively impacts cross-functional integration and does not directly affect company performance. External supply chain integration, in collaboration with external partners, is progressing well. The company is actively involved in developing these partnerships, which can lead to improved company performance, increased flexibility in meeting customer demands, and reduced production costs. Practical contributions to research provide insight for industry practitioners, enabling the internal cross-functional team to operate in an integrated manner and necessitating collaboration with external parties. Purchasing and marketing managers can play an active role in enhancing the involvement of external partners in improving company performance, making a theoretical contribution to enriching the development of information technology systems, and sustainable supply chains.
The Impact of Management Commitment on Firm Performance, The Mediating Role of Supply Chain Integration, Practices, and Green Supply Chain Management Zenia Estella Soesetyo; Hotlan Siagian; Zeplin Jiwa Husada Tarigan
Petra International Journal of Business Studies Vol. 8 No. 1 (2025): JUNE 2025
Publisher : Master of Management, School of Business and Management, Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/petraijbs.8.1.63-76

Abstract

The company's management always strives to enhance competitiveness by making business processes efficient and effective, while also paying attention to environmental protection. This study addresses the impact of management commitment on firm performance through supply chain integration, supply chain practices, and green supply chain management. The study employed a quantitative approach, and data collection was conducted among 80 manufacturing companies in Indonesia. The data were analyzed using partial least squares (PLS) with SmartPLS software version 4.0. The study results indicate that management commitment influences supply chain integration, supply chain practices, and the adoption of a green supply chain approach. Companies can optimize the role of external partners in supply chain integration, thereby influencing supply chain practices and the development of green supply chains. However, this study reveals that supply chain integration did not directly improve firm performance. Moreover, the results indicate that supply chain practices, such as building strategic partnerships and increasing information sharing, cannot directly improve firm performance. The company implements a green supply chain by evaluating environmental care programs, building awareness among customers to use environmentally friendly products, and consistently offering environmentally friendly products, which can improve firm performance. The practical contribution of research provides enlightenment to manufacturing industry practitioners, motivating them to commit to developing employees and enhancing their skills as human capital assets. Theoretical contribution to enriching the theory of the green environment in producing economic and environmental performance.
Co-Authors Aang Noviana Umbara Achmad Basori, Achmad Agung Harianto Alvenia Oktapia Andre Aaron Van Beukhhum Bob Maulana Adam Budi, Aileen Patricia Damiana Wiwik Debby Fransisca Muntu Devi Destiani Andilas Dherma Riofiandi Diah Dharmayanti Djiantoro Djiantoro Djukuw, Gery Doni Kurniawan Edwin Adhi Nugroho Eric Oktavianus Setiawan Faisal Rahman Faisal Rahman, Faisal Ferdy Dwi Permana Firmanta Sebayang Glori Puteri Maharani Agung Gunawan, Kristian Alvin Han Tae Hee Hotlan Siagian Ivan Kristianto Ivan Kristianto James Korompis Jamilatul Fithriyah Jiputra, Juan Alexander Juan Alexander Jiputra Kezia Jade Setiabudi Kristian Alvin Gunawan Linda Meriana Lukmandono Lusi Hapsari Restulingtyas Monika Kristanti Muhammad Ajir Muzakki Muzakki, Muhammad Ajir Narto Narto Novia Chandra Tanuwijaya Oviliani Yenty Yuliana Permana, Ferdy Dwi Priska Vianny Marsellita Putra, Ardiono Putri Indarwati Renna Kumalasari Ricky Ricky Ronaldo Richard Gunawan Ruth Lovita Surodjo Putri Sautma Roni Basana Sautma Roni Basana Setiabudi, Kezia Jade Sundring Pantja Djati Tommy Westonlie Umbara, Aang Noviana Veranita Goenawan Wahju Astjarjo Rini Westonlie, Tommy Yobeanto, Kelvin Leonardo Yonathan Palumian Yuliana Lianto Zenia Estella Soesetyo