USU-IR Repositori Institusi Universitas Sumatera Utara
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Design of Testing System on Determination of Mass and Pressure of LPG Gas Cylinders using LoadCell Hx711 and Pressure Sensor
No full textThe 3-kg Liquefied Petroleum Gas (LPG) cylinder is a widely used household energy
source in Indonesia and is classified as a Prepackaged Commodity (BDKT), which
mandates strict quantity verification under legal metrology regulations. Discrepancies
between the actual content and the declared weight on the cylinder may lead to
consumer losses and legal violations. This study aims to design and implement a
microcontroller-based testing system for accurately measuring both the mass and
internal pressure of 3-kg LPG cylinders. The system employs a Load Cell HX711 and
a pressure sensor integrated with an ESP32 microcontroller. Sensor outputs are
calibrated and converted into physical units, with real-time measurements displayed
on an LCD screen. System evaluation was conducted through testing multiple LPG
cylinder samples with varying content levels. The results demonstrate that the system
achieves high accuracy, with an average mass deviation of 0.46% and a pressure
deviation of 0.37% compared to standard measuring instruments. These findings
confirm the system’s reliability and suitability for practical field verification of LPG
cylinder contents. The proposed system offers a cost-effective and efficient solution
for supporting regulatory inspections, detecting fraudulent practices, and enhancing
consumer protection through precise quantity assurance.70 pagesSkripsi Sarjan
Implementation Of North Labuhanbatu Regent Regulation Number 28 Of 2022 On The Delivery Of Public Services Through The Bupati Ngantor Di Desa Program
No full textThe provision of public services in North Labuhanbatu Regency has not yet been optimal due to several contributing factors. This condition is further evidenced by the results of the Ombudsman of the Republic of Indonesia's assessment for the period 2022-2024. Therefore, the Government of North Labuhanbatu Regency introduced a program aimed at bringing public services closer to the community, known as the Bupati Ngantor di Desa Program (Bung Desa).
This study aims to analyze the role of implementers in carrying out North Labuhanbatu Regent Regulation Number 28 of 2022 in order to improve public services in North Labuhanbatu Regency through the Bupati Ngantor di Desa Program, as well as to identify the factors that hinder implementers in executing the program. The research method employed in this study is qualitative research, namely a research procedure that produces descriptive data in the form of written or spoken words derived from observed behaviors, such as perceptions, motivations, actions, and other related aspects. Data were collected through primary data obtained from in-depth interviews with informants and direct observation, as well as secondary data obtained from articles and journals accessed via the internet.
The results of the study indicate that: (1) the implementers, consisting of all levels of government from the Regent to village heads, have implemented the program effectively in providing public services. Problem resolution and service delivery are carried out within a short time frame and free of charge. The implementation of this program is in line with the theory of Van Meter and Van Horn, which emphasizes the importance of policy characteristics, resources, environmental conditions, and the implementation process involving multiple actors, as well as effective coordination and communication among government institutions; (2) the inhibiting factors in the implementation of the Bupati Ngantor di Desa Program include limited service facilities due to activities being conducted in village offices, program budgeting that is not separated from routine office activities resulting in difficulties in measuring budget accountability due to the absence of clear budget segregation, the lack of systematic evaluation which makes it difficult to assess program progress, and inconsistent activity schedules that hinder the determination of whether program objectives have been achieved and limit the ability to implement necessary improvements.149 PagesTesis Magiste
The Transformation of the Role of Terpuk Sitelu in Managing Village Strategic Assets in the Era of Regional Autonomy (Case Study in Sukanalu Village, Barusjahe District)
No full textThis study aims to understand how the transformation of the traditional
institution Terpuk Sitelu affects the management of strategic village assets
following the implementation of village government under the era of regional
autonomy. The research was conducted in Sukanalu Simbelang Village, Barusjahe
Subdistrict, Karo Regency, where vital assets such as the jambur (traditional hall)
and burial grounds are still managed by Terpuk Sitelu, even though legally they fall
under the authority of the village government. This research employs a descriptive
qualitative approach, using interviews, observation, and documentation
techniques. The analysis is based on Ralph Linton’s Role Theory, which emphasizes
that every social status carries certain expectations and functions within society.
The findings show that the role of Terpuk Sitelu has shifted from being the
primary decision-making authority to a symbolic cultural institution that still holds
strong social legitimacy. The village government has not been able to fully assume
control over these assets due to role conflicts, overlapping social expectations, and
the absence of formal collaboration mechanisms between the traditional institution
and the village administration.
These findings highlight that the success of village asset management does
not rely solely on formal regulation but also on the village government's ability to
build institutional synergy with deeply rooted customary structures. Therefore,
recognizing traditional institutions as strategic partners is essential to achieving
equitable and sustainable local governance.114 pagesSkripsi Sarjan
Prevalence of Nail Changes in Patients with Chronic Kidney Disease Undergoing Hemodialysis at Prof. Dr. Chairuddin Panusunan Lubis Hospital, Universitas Sumatera Utara
No full textBackground: Chronic Kidney Disease (CKD) is a condition characterized by a progressive and irreversible decline in kidney function, leading to the accumulation of metabolic waste products in the body. In advanced stages, patients require renal replacement therapy, one of which is hemodialysis. While hemodialysis helps maintain essential bodily functions, it may also cause various systemic changes, including manifestations on the skin and nails. Nail alterations are commonly observed in hemodialysis patients and may reflect their overall health status, making them important to study. Objective: To determine the prevalence of nail changes in CKD patients undergoing hemodialysis and to analyze the relationship between duration of hemodialysis, hypertension, and diabetes mellitus with the occurrence of nail changes at Prof. Dr. Chairuddin P. Lubis Universitas Sumatera Utara Hospital, Universitas Sumatera Utara, Medan, 20155, INDONESIA. Methods: This study employed an analytical design with a cross-sectional approach. Data were collected through direct observation of nail conditions and structured interviews based on medical records. Univariate analysis was used to describe the distribution of nail changes, while bivariate analysis was performed using the Chi-square test. Results: Of the 60 patients examined, the majority experienced nail changes, totaling 51 individuals (85.0%). The most frequently observed type of nail alteration was nail discoloration, found in 44 patients (73.3%). Meanwhile, the least common finding was nail fragility, which occurred in only 2 patients (3.3%). Statistical analysis showed that the duration of hemodialysis, hypertension, and diabetes mellitus had no significant association with the occurrence of nail changes. Conclusion: Nail changes are commonly found in patients with chronic kidney disease undergoing hemodialysis, with nail discoloration being the most dominant manifestation. However, these nail changes are not significantly associated with the duration of hemodialysis, hypertension, or diabetes mellitus.83 PagesSkripsi Sarjan
Relationship Between Serum Estradiol Levels and Skin Tags
No full textBackground: Skin tags (acrochordon) are benign skin lesions that are often found, especially in adults and the elderly. Although non-malignant, their occurrence is often associated with various metabolic and hormonal conditions. One of the hormones suspected to play a role in the pathogenesis of skin tags is estradiol (17β- estradiol), the main biologically active form of estrogen. Estradiol is known to affect various components of the skin such as fibroblasts, keratinocytes, and mast cells.
Objective: To determine the relationship between serum estradiol levels and skin tag formation
Subjects dan Metodhs: This study was an observational study with a cross- sectional design on 30 female patients with skin tags and 30 female patients without skin tags. Each patient underwent anamnesis, dermatological examination, and continued with blood sampling to assess estradiol levels using the ELISA test. The data were analyzed statistically using the Mann-Whitney analytical test.
Results: The mean estradiol level in skin tags was 420.86 ng/mL (SD = 196.75 ng/mL) significantly higher than the control group (p<0.01). Most subjects with skin tags is the age group 36 – 35 years with 19 subjects (63.3%), the most predilection location was in the neck region of 22 subjects (73.3%), had a total of 6-10 lesions of 20 subjects (66.7%) with the most clinical form being pedunculated of 19 subjects (63.3%).
Conclusion: There is a significant relationship between high estradiol levels and skin tags (p<0.001).77 PagesTesis Magiste
The Effect of Service Quality, Product Quality, and Price On Customer Satisfaction at Cold 'N Brew Abdullah Lubis Branch Medan
No full textPenelitian ini bertujuan untuk mengetahui pengaruh service quality, product
quality, dan price terhadap customer satisfaction pada Cold ‘N Brew Cabang
Abdullah Lubis Medan. Penelitian ini adalah penelitian asosiatif dan jenis data yang
digunakan adalah data kuantitatif. Populasi dalam ppenelitian ini adalah konsumen
yang pernah berkunjung dan membeli di Cold ‘N Brew Cabang Abdullah Lubis
Medan. Jumlah sampel pada penelitian ini adalah 90 orang dengan teknik
pengambilan sampel purposive sampling dengan kriteria adalah konsumen yang
berusia diatas 17 tahun dan konsumen yang pernah berkunjung dan membeli di
Cold ‘N Brew Cabang Abdullah Lubis Medan lebih dari 3 kali. Analisis data yang
digunakan adalah analisis regresi linear berganda. Pengelolaan data dalam
penelitian menggunakan SPSS. Hasil penelitian ini menunjukkan bahwa secara
simultan service quality, product quality, dan price berpengaruh positif dan
signifikan terhadap customer satisfaction. Secara parsial, service quality, product
quality, dan price berpengaruh positif dan signifikan terhadap customer satisfaction
pada Cold ‘N Brew Cabang Abdullah Lubis Medan. Berdasarkan koefisien
determinasi variabel independent mampu mempengaruhi variabel dependen sebesar
71,7%.111Skripsi Sarjan
The Influence of Work Motivation, Work Load, Team Work on Employee Performance at PT. Regional I Cellular Telecommunications Cooperation (Kisel) North Sumatra Province
No full textThe high turnover rate and absenteeism among employees at PT.
Koperasi Telekomunikasi Selular (Kisel) Regional I in North Sumatra Province
have raised concerns about organizational stability and productivity.
Suboptimal employee performance is believed to be influenced by factors such
as work motivation, teamwork, and workload. Therefore, this study aims to: 1)
Analyze the effect of work motivation on employee performance, 2) Analyze the
effect of teamwork on employee performance, 3) Analyze the effect of workload
on employee performance, and 4) Analyze the simultaneous effect of work
motivation, teamwork, and workload on the performance of employees at PT.
Kisel Regional I North Sumatra. The study was conducted at PT. Koperasi
Telekomunikasi Selular (Kisel) Regional I North Sumatra using a quantitative
approach and multiple linear regression analysis. Data were collected through
questionnaires distributed to active employees involved in work teams.
Preliminary findings indicated that employee motivation levels were moderate,
teamwork was suboptimal due to low trust among coworkers, and many
employees felt their workload did not align with their capabilities or
responsibilities. The results showed that work motivation, teamwork, and
workload significantly influenced employee performance, both partially and
simultaneously. Work motivation and teamwork contribute to increased
productivity and work effectiveness, while unbalanced workloads can hinder
the achievement of optimal performance. Therefore, the company is advised to
strengthen its motivation system, build trust within teams, and manage
workloads proportionally to enhance human resource performance.185 PagesTesis Magiste
Participatory-Based Green Open Space Management at Helvetia Village Square, Medan Helvetia Subdistrict, Medan City
No full textGreen open space (GOS) plays a vital role in supporting environmental quality and fostering social interaction within urban communities. However, the management of GOS at the Helvetia Village Square in Medan Helvetia Subdistrict faces several challenges, including low levels of community participation, limited government communication, and the absence of a community-based management institution. This study aims to analyze the forms of community participation, identify factors contributing to low engagement, and formulate participatory-based strategies for GOS management. This research employed a quantitative descriptive analysis (frequency distribution and Chi-Square test) and in-depth interviews and Focus Group Discussions (FGDs). Data were collected from 100 respondents, field observations, and relevant stakeholders. The results indicate that only 20% of residents participate, dominated by contributions in the form of labor (6%) and ideas (5%), while 80% do not participate due to weak government outreach, poorly maintained facilities, and the absence of a community management forum. The study identifies three key strategies: (1) organizing routine cleaning and maintenance activities as environmental education; (2) providing collaborative spaces for arts, culture, and community education; and (3) developing plant adoption programs involving residents, communities, and schools. The most feasible short-term strategy is routine community clean-up activities, as they require minimal funding, align with dominant participation patterns, and can be implemented immediately. Overall, strengthening community-based institutions and fostering multi-stakeholder collaboration are essential to achieving more inclusive and sustainable GOS management in Medan Helvetia.106 PagesTesis Magiste
Analysis of the Effect of Accounts Receivable Turnover, Firm Size, Capital Structure, and Return on Investment on the Profit Growth of Financing Companies in Indonesia
No full textThis study aims to analyze the effect of accounts receivable turnover, firm size, capital structure, and return on investment on the profit growth of financing companies in Indonesia. The sample for this study consists of 32 financing companies in Indonesia from 2018 to 2022, resulting in a total of 165 observations. The data used in this study is secondary annual data obtained from the audited financial statements of the selected financing companies. The analysis method employed is panel data regression. The results show that, partially, the variables of accounts receivable turnover and firm size have no significant effect on the profit growth of financing companies in Indonesia, while the capital structure variable has a significant negative effect on profit growth, and the return on investment variable has a significant positive effect on profit growth. The results of the study, when analyzed simultaneously, indicate that accounts receivable turnover, firm size, capital structure, and return on investment do not significantly affect the profit growth of financing companies in Indonesia, with the independent variables explaining 21.74% of the variation in the dependent variable.98 PagesSkripsi Sarjan
Species Diversity of Herpetofauna in the Ecotourism Area of Tangkahan Batang Serangan Subdistrict Langkat Regency
No full textEcotourism Tangkahan, located in Batang Serangan Subdistrict, Langkat Regency, holds a high level of biodiversity with various land cover types such as natural forests, rivers, and oil palm plantations. This study aims to identify and explore the diversity of herpetofauna across different land cover types in Ecotourism Tangkahan and to analyze the level of herpetofaunal diversity in the area. The research was conducted from August to September 2024 using the Line Transect and Visual Encounter Survey (VES) methods across three observation paths. The results recorded a total of 14 herpetofauna species, consisting of 8 amphibian species and 6 reptile species, with a total of 149 individuals distributed across the three land cover types. The highest diversity was found in natural forest areas, while the oil palm plantation had the lowest diversity and number of individuals. The dominant species was Fejervarya cancrivora, indicating its strong adaptability to various habitats. These findings highlight the importance of preserving natural habitats to support sustainable ecotourism activities and biodiversity conservation in the Tangkahan area.91 PagesSkripsi Sarjan