USU-IR Repositori Institusi Universitas Sumatera Utara
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Design An Automatic Fire Extinguishing Robot and Controller With A Smartphone Using An Arduino Uno
No full textIn this study, the design of an automatic fire fighting robot and controller with a smartphone using Arduino Uno as the main microcontroller was carried out. The purpose of this study was to develop a robot system that can automatically detect and guarantee fire effectively without requiring direct human intervention. This robot is equipped with a fire sensor as a fire detector and a water pump for fire ventilation and uses a servo that functions to direct the hose towards the detected fire. The results of this study are the creation of a wheeled fire fighting robot where in moving the robot it is still manually according to commands through the application using the help of a smartphone that has been connected to the HC-05 bluetooth on the robot. After the robot moves to the location of the fire, the fire sensor will detect the fire and then the data from the sensor will be processed by Arduino Uno to control the extinguishing mechanism, the servo will move the hose towards the detected fire and then the water pump will be activated and can automatically extinguish the fire. It can be concluded that the design of this fire fighting robot can be used as a basis if you want to make a real fire fighting robot.61 PagesKertas Karya Diplom
A Description of Plot in The Meg 2: The Trench Movie
No full textBackground: Plot is one of the important intrinsic elements in literary works, including in a movie as a modern literary work. The Meg 2: The Trench is an action-adventure movie that depicts a battle between humans and ancient creatures that endanger life. The plot in this movie has an important role in creating a complete storyline for the audience.
Objective: This research is focused on describing the plot stages and plot types found in The Meg 2: The Trench movie.
Method: This research uses a qualitative descriptive method. The writer observes the storyline of the movie in detail and notes the sequence of the narrative based on Gustav Freytag's five stages of plot theory, namely exposition, rising action, climax, falling action, and resolution. The type of plot used in this movie is also described based on Christopher Booker's The Seven Basic Plots theory.
Results: The movie The Meg 2: The Trench has a storyline that is sequenced through five sequential plot stages. Starting from the introduction of the character, the conflict develops to the climax, leading to a decrease in tension, and ends with a resolution after the threat is successfully overcome. The plot type in this movie is a category of the Overcoming the Monster, because the movie tells the struggle of the main character while facing a threat in the form of ancient sea creatures.
Conclusion: The plot in The Meg 2: The Trench can be described through the plot stages according to Freytag and is classified as the Overcoming the Monster plot type based on Christopher Booker's theory. The plot in this movie depicts the struggle of the main character in facing great danger and shows courage and teamwork.38 PagesKertas Karya Diplom
Analysis of the Competitiveness of Indonesian Natural Rubber Exports in the International Market
No full textIndonesia is one of the largest rubber-exporting countries in the world, to
understand the competitive position of Indonesian natural rubber, regular monitoring
of the development of this commodity compared to competing countries in the
international market is necessary. This information is crucial to determine the extent
of the influence of Indonesian natural rubber exporters in dominating the global
market, which directly determines the direction and structure of the market through
market share achievements. This research aims to analyze the competitiveness of
Indonesian natural rubber exports in the international market and to analyze the factors that
influence the competitiveness of Indonesian natural rubber exports in the international market. The
analytical model used in this research is Revealed Comparative Advantage (RCA) to
measure a country's comparative advantage in international trade, and Export
Competitiveness Index (ECI) to measure a country's ability to compete in the global
export market, particularly regarding market share and the export performance of
specific commodities. Export Product Dynamic (EPD) to measure the dynamics of
export growth of a product and the market position of the product, and panel data
regression model to analyze the factors affecting competitiveness. The data used is
secondary data in the form of cross-sectional data from 3 countries: Indonesia,
Thailand, and Vietnam, as well as time series data from 2000 to 2023. The results show
that Indonesian natural rubber has comparative and competitive advantages, meaning
that Indonesian natural rubber is highly competitive in the international market. Based
on the research results of the panel data regression analysis, the factors affecting the
competitiveness of Indonesian natural rubber exports in the international market are volume and gross domestic product
(GDP).122 PagesTesis Magiste
The Influence of Price Perception, Product Diversification, and Edutainment Content on Subscription Interest in Ruangguru (Case Study at SMAN 1 Medan)
No full textThis study aims to analyze the influence of price perception, product diversification, and edutainment content on students' subscription interest in Ruangguru among SMAN 1 Medan students. The global education technology market shows rapid growth, projected to reach USD 163.5 billion by 2025, with the K-12 segment being a major contributor. Although Ruangguru dominates the Indonesian EduTech market, the conversion of free users to paid subscribers remains low. This issue stems from price perception problems, where users feel the cost isn't commensurate with quality, and prices are often higher than competitors. Extensive product diversification also faces challenges, including the relevance of animated content for high school students and a lack of product flexibility. Furthermore, edutainment programs like Clash of Champions (CoC) show temporary spikes in social media followers, indicating a momentum-based audience interest. Employing an associative quantitative approach with a survey design, this research involved 93 SMAN 1 Medan students as a sample selected through purposive sampling. Primary data was collected via questionnaires and analyzed using SPSS, including validity and reliability tests, descriptive analysis, classical assumption tests, multiple linear regression, determination coefficient analysis, and t and F tests. The findings indicate that price perception, product diversification, and edutainment content simultaneously have a positive and significant effect on subscription interest. Partially, price perception has a positive but not significant effect, while product diversification and edutainment content individually have a positive and significant effect on Ruangguru's subscription interest.191 PagesSkripsi Sarjan
The Influence of Human Resource Management on Employee Productivity at Four Points by Sheraton Medan
No full textThis study aims to determine the influence of human resource management on
employee productivity at Hotel Four Points by Sheraton Medan. The type of
research used is qualitative research with a descriptive approach. Data collection
techniques were carried out through interviews and questionnaires involving 17
respondents consisting of employees, supervisors, and managers at Hotel Four
Points by Sheraton Medan. The results of the study indicate that the human
resource management implemented at the hotel has been running well, as evidenced
by a transparent recruitment system, regular training, an objective performance
appraisal system, and harmonious working relationships. In addition, the majority
of employees feel that the compensation and career development opportunities
provided are appropriate. This has had a positive impact on employee productivity,
which can be seen from timely task completion, improved service quality, and high
work motivation.74 PagesKertas Karya Diplom
Human Error Analysis in the Halal Supply Chain at Unit Usaha Tahu Ponimin
No full textThe halal food industry is a strategically growing sector, especially in Indonesia as the country with the largest Muslim population. However, halal products often face challenges in ensuring the integrity of halal supply chains in maintaining consistent halal standards. Tahu Ponimin, a tofu production unit, is currently in the process of preparing for halal certification to ensure product halalness up to the end consumer. This study aims to identify the impact of human error on product halalness within the supply chain of Tahu Ponimin. A descriptive quantitative approach was employed by integrating the Halal Six Sigma (DMAIC) framework and the HEART (Human Error Assessment and Reduction Technique) method to identify, measure, and analyze the probability of human error (HEP). The results indicate that the highest probabilities of human error occurred in supplier selection (1.75), soybean porridge cooking (1.59), tofu frying (1.59), material delivery (0.98), and tofu storage (0.52). However, according to the principle of the HEART method, if the HEP calculation result exceeds 1, then the value must be assumed to be 1.00 and must not be more (Kirwan, 1994).These five activities account for 66.71% of the total HEP. Corrective measures include the development of Standard Operating Procedures (SOPs) to provide clear work guidelines and minimize the risk of human error in maintaining product halalness.101 PagesSkripsi Sarjan
Patriotism in Generation Z Categorized as Poor in Medan City
No full textPatriotism is an important aspect in the formation of national identity, especially
among the younger generation living in limited socio-economic conditions. This
study aims to describe the level of patriotism of Generation Z, who are categorized
as poor in Medan City, based on the dimensions of blind patriotism and constructive
patriotism, and reviewed from age, education, and political orientation. This study
uses a quantitative approach with a descriptive method. The research subjects
numbered 100 people selected through accidental sampling technique. The
measuring instrument used was a patriotism scale based on the theory of Schatz et
al. (1999), which has been modified and tested for validity and reliability by Zahra
(2025). The results of this study indicate that the blind patriotism dimension, the
results are moderate (92%), while the constructive patriotism dimension is high
(77%). Based on age, most respondents have moderate blind patriotism (92%) and
high constructive patriotism (77%). Based on the last education, blind patriotism is
dominantly moderate (94%) and has high constructive patriotism (96%), and based
on political orientation, blind patriotism tends to be moderate (92%) and
constructive patriotism is high (77%).68 PagesSkripsi Sarjan
Potential of Lactic Acid Bacteria (LAB) from Hermetia illucens larvae in Inhibiting Methicillin-resistant Staphylococcus aureus (MRSA)
No full textLarvae of Hermetia illucens, commonly known as maggots, are known to decompose various organic materials such as vegetables and fruits. This ability creates a body and gut environment rich in microorganisms, including lactic acid bacteria (LAB). LAB are capable of producing bioactive compounds such as lactic acid and bacteriocins, which possess antibacterial properties against pathogenic bacteria. This study aimed to isolate LAB from Hermetia illucens larvae and to assess their antagonistic activity against Methicillin-resistant Staphylococcus aureus (MRSA). LAB were isolated from both the body surface and the gut of the larvae, then characterized morphologically, subjected to Gram staining, motility test and biochemical assay. The isolated LAB strains were tested for their antagonistic ability against MRSA using the dual culture method and by assessing the inhibitory activity of the culture supernatant. The LAB culture supernatants underwent four treatments: untreated (normal condition), heating at 100°C, autoclaving, and pH neutralization. The isolation yielded 13 LAB strains, consisting of 5 isolates from the body surface and 8 from the gut of the larvae. Morphological characterization revealed diversity in colony shapes, colors, margins, and elevations among the isolates. All isolates were Gram-positive and exhibited bacillus and coccus cell forms. Biochemical tests indicated that all isolates were non-motile, catalase-negative, and capable of fermenting sugars without producing hydrogen sulfide (H₂S) or carbon dioxide (CO₂). Antagonistic tests against MRSA identified 6 isolates with inhibitory potential. The antimicrobial activity indices of these 6 isolates ranged from 0.3 to 3.525. The isolate with the highest activity index was Mi01 under natural conditions although its inhibitory activity decreased after heat and autoclaving treatments, it remained effective to inhibit MRSA. These results suggest that isolate Mi01 has potential as a candidate antimicrobial-producing bacterium in inhibiting MRSA infections that are resistant to conventional antibiotics and that it produces antimicrobial compounds that remain stable under high-temperature conditions.46 PagesSkripsi Sarjan
Calculation of Income Tax Article 21 on Salaries of Permanent Employees at PT. Karya Murni Perkasa
No full textThis study aims to determine whether the calculation of Income Tax Article 21 on the salaries of permanent employees at PT. Karya Murni Perkasa is in accordance with the latest tax regulations, particularly Law Number 7 of 2021 on the Harmonization of Tax Regulations and the Minister of Finance Regulation Number 168 of 2023.
This research uses descriptive and deductive methods with a quantitative approach based on data on employee income and tax withholdings.
The results of the study show that the calculation of Income Tax Article 21 by the company refers to the latest provisions, including the use of progressive tax rates, deductions for job-related expenses, pension contributions, and the recognition of non-taxable income (PTKP) based on marital status and number of dependents.
This proves that the company has fulfilled its tax obligations accurately and in compliance with applicable regulations.53 PagesKertas Karya Diplom
Determination of Lead, Cadmium, and Zinc Metal Concentrations in Road Dust Suspension -Resuspension In and Outside the Medan Industrial Area (KIM)
No full textA study was conducted to analyze and compare the concentration of heavy metals Lead, Cadmium, and Zinc in Road Dust Suspension-Resuspension (RDS-R) around the inside and outside of the Medan Industrial Area (KIM). Road dust samples were collected using a portable vacuum with three location points around the inside and two points outside the KIM area. Each road dust with a collection point was combined into one to create a representative sample. Sifted with a 200 mesh sieve and continued with sample destruction using wet destruction. Testing of the concentration of Pb, Cd, and Zn metals was carried out using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). The results showed that the concentration of each Pb, Cd, Zn metal contained in road dust around the inside of KIM was 0.29 mg/L; 0.01 mg/L; and 4,62 mg/L. Meanwhile, the concentrations of Pb, Cd, and Zn metals contained in road dust outside KIM were 0.32 mg/L; 0.01 mg/L; and 8,21 mg/L, respectively. The order of metal concentrations from highest to lowest is Zn> Pb> Cd, where the concentrations of Pb and Zn tend to be greater outside the KIM area compared to around the inside. This is due to the high frequency of traffic intensity outside KIM and the contribution of heavy metals sourced from sampling points around the inside of KIM is relatively lower than the main sources of heavy metals such as metal smelters, forging factories, and steel factories, as well as smoke from burning coal and oil which produce significant amounts of heavy metal emissions.94 PagesSkripsi Sarjan