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INDONESIA
JOURNAL SCIENTIFIC OF MANDALIKA (JSM)
Published by Institut Penelitian dan Pengembangan Mandalika Indonesia
ISSN : -     EISSN : 27455955     DOI : -
Core Subject : Humanities, Education,
Humanities Languange, Linguistic, Communication & Media Other
This journal is a means of scientific publication to develop knowledge and information. This journal specifically contains the results of research carried out in all scientific fields. Apart from publishing research results, this journal also accepts manuscripts from literature reviews and other reports for publication. This journal is published every month since August 2020.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 732 Documents
 70   71   72   73   74 
Pengaruh Penambahan Kitosan Terhadap Kualitas Bioplastik Biodegredable Berbahan Dasar Pati Jagung Mochammad Rizki Fajri; Dewi Anggraini Septaningsih; Dea Dwi Ananda; Hazzha Azzahra; Latisa Stefi Alivia; Defandio Putra Gemilang Argiansyah; Farelino Oktavianus Purba; Wikrama Sarweswara
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 6 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss6pp848-855

Abstract

The issue of non-degradable plastic waste has become a major concern, encouraging the development of environmentally friendly bioplastics based on natural materials. This study aims to synthesize and characterize chitosan derived from green mussel shells and apply it in the production of corn starch-based bioplastics, as well as to analyze the effect of chitosan addition on mechanical properties and water absorption. The method includes chitosan isolation through demineralization, deproteinization, and deacetylation, followed by bioplastic synthesis using the blending method. Characterization was carried out through organoleptic testing, yield calculation, ninhydrin test, biodegradability test, and water absorption test. The results show that the produced chitosan has good quality with a yield of 66.905% and a positive response to the ninhydrin test. The resulting bioplastic exhibits high biodegradability, indicated by significant degradation within two days. The addition of chitosan enhances structural strength and biodegradability but also increases water absorption and reduces flexibility. Overall, chitosan plays an important role in improving bioplastic performance, although composition optimization is required to achieve balanced material properties
Rancangan reinstalasi runway edge light di bandar udara fransiskus xaverius seda maumere Nur Aida Basir; Edy Kurniawan; Iwan Koswara
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 6 (2026): (in progress)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss6pp837-847

Abstract

The background of this research is the visual landing aid, specifically the runway edge lights, which have experienced an elevation decrease due to repeated overlay work and soil contour conditions. This phenomenon causes the light positions to not meet the ideal elevation thresholds, potentially affecting the effectiveness of visual guidance for pilots during flight operations. The purpose of this research is to produce a technical reinstatement design for the runway lights in accordance with aviation regulations. A Research and Development method was employed through field observations and elevation measurements. The discussion of this research includes an analysis of existing conditions, which serves as the foundation for designing light base height adjustments. The technical design is presented in the Detail Engineering Design (DED) and Bill Off Quantities (BOQ), covering all work aspects, from electrical installation procurement and the calculation of 12,535 meters of FL2XCY primary cable to civil works involving 2,008 m3 of soil excavation, as well as technical specifications for transformer pit construction and runway edge light base reconstruction. The conclusion of this research indicates that reinstatement is essential to restore the optimal function of the lights. The implementation of this design can improve sustainable flight operational safety at Fransiskus Xaverius Seda Maumere Airport.
Uji potensi bioherbisida ekstrak daun nambu betung (dendrocalamus asper) dalam menghambat pertumbuhan cyperus rotundus L. Dita Prihartini; Gita Nabila Islami
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 6 (2026): (in progress)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss6pp805-814

Abstract

Weeds are undesirable plants that can reduce the productivity of cultivated crops; therefore, effective control measures are required. This study aimed to analyze the effect of Dendrocalamus asper leaf extract as a bioherbicide on the growth of nutgrass (Cyperus rotundus L.), as well as to evaluate the effect of different extract concentrations under field conditions. The experiment was arranged using a Completely Randomized Design (CRD) with five levels of bamboo leaf extract concentrations: 0 g/mL, 0.17 g/mL, 0.42 g/mL, 0.81 g/mL, and 1.5 g/mL. The observed data were analyzed using Analysis of Variance (ANOVA), followed by the Least Significant Difference (LSD) test when significant differences were detected. The results showed that the application of D. asper leaf extract inhibited the growth of C. rotundus in terms of plant height, leaf number, stem diameter, and root length. The lowest inhibition was observed at a concentration of 0.42 g/mL, while the highest inhibition occurred at 1.5 g/mL. Similarly, for fresh and dry weight parameters, the extract demonstrated inhibitory effects on weed growth. The lowest inhibition was found at 0.17 g/mL, whereas the highest inhibition was consistently observed at 1.5 g/mL. These findings indicate that the application of D. asper leaf extract contributes to a reduction in the water content of C. rotundus, suggesting its potential as a natural bioherbicide.
Rancangan sistem e-maintenance elektronika bandara berbasis web dan qr code studi kasus bandara douw aturure nabire Asrul Saefullah Kadir; M. Arif Sulaiman; Toni
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 6 (2026): (in progress)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss6pp788-804

Abstract

Maintenance of airport electronic equipment is a critical aspect in ensuring flight safety, security, and operational continuity. However, the recording and reporting of electronic equipment maintenance activities at the Douw Aturure Nabire Class II Airport Management Unit (UPBU) are still conducted manually using physical logbooks. This condition leads to several issues, including the risk of data loss, difficulties in tracing maintenance history, and limited technical supervision.This study aims to design and implement a web-based E-Maintenance system for airport electronic equipment integrated with Quick Response (QR) Code technology to improve the efficiency and reliability of maintenance record management. The system development method applied in this study is Agile Software Development using the Feature Driven Development (FDD) approach.The developed system supports maintenance data entry by technicians, equipment identification through QR Code scanning, technical validation of maintenance reports by supervisors, and digital generation of maintenance reports. The results of system testing using the Black Box Testing method indicate that all system functionalities operate according to user requirements and system design specifications.Based on these results, it can be concluded that the developed E-Maintenance system is capable of improving the efficiency of maintenance data recording and management, facilitating maintenance history tracking, and enhancing data reliability through a structured technical validation mechanism
Analisis perbandingan kinerja keuangan perusahaan sub sektor farmasi sebelum dan sesudah pandemi covid-19 Susi Susanti; Aris Munandar; Hanifah Muthiah
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 7 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss7pp884-901

Abstract

The purpose of this study is to determine and compare the financial performance of pharmaceutical sub-sector companies before and after the Covid-19 pandemic. This study uses a comparative type of research using quantitative data from secondary data sources. The research instrument used is a table containing variable indicators Current Ratio (CR), Debt to Equity Ratio (DER) and Return On Assets (ROA). The population used in this study is the financial statements of 13 pharmaceutical sub-sector companies listed on the Indonesia Stock Exchange. The sample in this study is the financial statements of 6 pharmaceutical sub-sector companies. The sampling technique used in this study is purposive sampling. Data collection techniques used are documentation and literature studies and use data analysis Normality test Then the data will be analyzed using descriptive statistics and to test the difference in financial performance before and after the COVID-19 pandemic, a different test is used: Paired Sample t-Test. The results of the study showed that there was a difference in the Current Ratio (CR) in pharmaceutical sub-sector companies before and after the Covid-19 pandemic, while there was no difference in the Debt to Equity Ratio (DER) and Return on Assets (ROA) in pharmaceutical sub-sector companies before and after the Covid-19 pandemic.
Tradisi papungu tumpak ulaon borngin pada masyarakat sahil jae Tia Ningsi Sarumpaet; Torang Naiborhu; Rahmatika L Sholikha
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 7 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss7pp878-883

Abstract

This study discusses the Papungu Tumpak Ulaon Borngin tradition in the Sahil Jae Village community, Sorkam District, Central Tapanuli Regency, which is part of a series of traditional Batak Toba wedding ceremonies. The problem of this research is how the ceremony runs and how the form of presentation and function of music in the Papungu Tumpak Ulaon Borngin party. This study aims to describe the stages of the ceremony, the form of music presentation, and the function of music in the context of the traditional ritual. The method used is a qualitative descriptive method with an ethnomusicological approach. Data were collected through direct observation, interviews with traditional leaders, musicians, and local residents, and documentation in the form of photos, audio, and video. The results of the study show that the Papungu Tumpak Ulaon Borngin party is held the night before the traditional wedding ceremony and consists of several stages, such as manomu-nomu, pasahat tumpak, pasahat silua, marpanganan borngin, distribution of jambar, and entertainment events. Music has an important role as an accompaniment to traditional processions, a means of symbolic communication, and a medium of entertainment for the community. Thus, music not only functions as an aesthetic element, but also as a means of strengthening social solidarity, conveying traditional messages, and preserving the cultural identity of the Toba Batak people in Sahil Jae Village
Hubungan kepemimpinan dan fasilitas K3 dengan persepsi risiko siswa dan guru pada era pasca pandemi Nur Aini; Riscky Fitri Wahyuni
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 7 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss7pp871-877

Abstract

Occupational health and safety (OHS) in the education sector has become an important issue, particularly in the post-pandemic era characterized by behavioral changes and the emergence of safety fatigue. Risk perception, as a psychological factor, plays a crucial role in shaping safety behavior among students and teachers. This study aims to analyze the relationship between principal leadership and OHS facilities with the risk perception of students and teachers in the post-pandemic context. This research employed a quantitative analytic approach with a cross-sectional design involving 130 respondents consisting of students and teachers, selected through probability sampling. Data were collected using a Likert-scale questionnaire and analyzed using multiple linear regression. The results indicate that principal leadership and OHS facilities are positively and significantly associated with risk perception (p < 0.05). Descriptively, both independent variables were categorized as moderate, while risk perception was at a medium level. These findings suggest that strengthening safety culture in schools requires an integrated approach involving leadership, facility support, and behavioral strategies. Therefore, optimizing leadership roles and the sustainable utilization of OHS facilities are expected to enhance risk awareness and strengthen safety culture in the school environment
Pengaruh kompetensi profesional dan motivasi kerja terhadap kinerja guru smk di kabupaten tapanuli utara Khristopel Simamora; Pardomuan Simanullang; Rencan Carisma Marbun
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 7 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss7pp922-929

Abstract

This study aims to determine 1) the influence of professional competence on the performance of vocational high school teachers in North Tapanuli Regency; 2) the influence of work motivation on the performance of vocational high school teachers in North Tapanuli Regency; and 3) the joint influence of professional competence and work motivation on the performance of vocational high school teachers in North Tapanuli Regency. This study used a quantitative survey method. The population was 81 vocational high school teachers, consisting of 62 teachers from State Vocational High School 1, Siborongborong District, and 19 teachers from State Vocational High School 1, Muara District, North Tapanuli Regency. The sample of this study was a saturated sample of 81 people. Data were collected with a closed questionnaire consisting of 55 statement items for variable Y (Teacher Performance) and 54 statement items for variable X1 (Professional Competence) and 20 statement items to measure variable X2 (Work Motivation), so that the total was 129 statement items. Before being used on real respondents, the instrument was first tested on 30 State Vocational High School 1 Teachers, Pagaran District, North Tapanuli Regency. The results of the instrument trial showed that all questionnaire items were valid and reliable. Data analysis techniques were carried out using descriptive analysis, variable categorization and parametric statistical analysis with simple and multiple linear regression by looking at the value of the linear equation, correlation value and coefficient of determination as well as t-test and F-test. The results of the data analysis show that: 1) Teacher Professional Competence has a positive effect on the Performance of Vocational High School Teachers in North Tapanuli Regency with a contribution of 28.3%, where the strong correlation value is 0.532, with a linear equation of Y = 83.056 + 0.610X1 and t count = 5.557> t table (n-2 = 79) = 2.000. 2) Work Motivation has a positive effect on the Performance of Vocational High School Teachers in North Tapanuli Regency in 2016 with a contribution of 32.6%, where the strong correlation value is 0.571, with a linear equation of Y = 108.072 + 1.278 and t count = 6.182> t table (n-2 = 79) = 2.000 and 3) Professional Competence and Teacher Work Motivation together have a positive effect on the Performance of Vocational High School Teachers in North Tapanuli Regency with a contribution of 42.6% where the strong correlation value of R is 0.653, multiple linear equations Y = 54.546 + 0.403X1 + 0.940X2 and F count = 28.974> F table (k-1, n-k; 2.79) = 3.15. Thus it is concluded that the research hypothesis is accepted.
Pengaruh kualitas informasi dan manfaat informasi terhadap kepuasan masyarakat pada instagram kantor imigrasi kelas 1 TPI denpasar Bima Fatwa Ramadhan; Kadek Jemmy Waciko; Ni Putu Ritra Trees Ari Kartika Hadi Saraswati
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 7 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss7pp908-921

Abstract

This study aims to analyze the influence of information quality and information utility on public satisfaction regarding the Instagram account of the Class I TPI Denpasar Immigration Office. The study is motivated by the importance of social media as an effective public communication tool for conveying immigration service information to the public. A quantitative approach was employed, utilizing a survey method involving 100 respondents who had accessed the Class I TPI Denpasar Immigration Office's Instagram account. Data were collected via questionnaires and analyzed using multiple linear regression with the aid of IBM SPSS. The results indicate that both information quality and information utility have a positive and significant effect on public satisfaction, both individually and simultaneously. Furthermore, while both variables explain a substantial portion of the variation in public satisfaction regarding the information conveyed via Instagram, the information utility variable is far more dominant. These findings demonstrate that higher quality and utility of the information provided lead to higher levels of satisfaction among the public as information users. The study offers practical implications for the Class I TPI Denpasar Immigration Office to continuously enhance the quality and utility of information shared on social media, thereby supporting effective public communication and boosting public satisfaction
Analisis “overthinking sebagai refleksi pribadi” dalam karya penciptaan seni lukis sarfi Lalu Aswandi Mahroni G
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 7 No. 7 (2026)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol7iss7pp902-907

Abstract

This research and art creation aim to explore the psychological condition of "overthinking" as a source of ideas and personal reflection in creating paintings. Overthinking is often considered a mental burden and a trigger for anxiety, but in this context, it is transformed into creative energy visualized through a symbolic expressionism approach. The creation method used includes the stages of observation, contemplative self-reflection, sketch designing, and the realization of the artwork using mixed media techniques on canvas. The materials used vary, including acrylic paint, gypsum, spray paint (pilox), printed paper, and markers, to create emotional textures and dimensions. The result of this process is a series of expressionist paintings which visually represent inner conflicts, social pressures, and future uncertainties. Through these works, the author finds a cathartic medium to manage emotions while inviting appreciators to understand dark psychological experiences. In conclusion, this art creation proves that overthinking can be reconstructed into critical awareness and a powerful visual communication medium.

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