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91	Education	ABS-204
Teachers Ability To Design Mathematics Learning Based On Entrepreneurship Alpha Galih Adirakasiwi (a*), Attin Warmi (b), Achamd Nawawi (c) Universitas Singaperbangsa Karawang Abstract The teaching skills of teachers are not only capable of utilising ICT technology but also facilitate the construction of prior knowledge with new information. Therefore, entrepreneurship-based mathematics learning can serve as an alternate method for students to comprehend the concept of material through their daily experiences. However, the teachers have not prepared learning instruments for the mathematical learning activities process based on entrepreneurship. This research aimed to analyse and describe the ability of mathematics teachers in West Karawang Sub-district Vocational High Schools to design mathematics learning based on entrepreneurship. This study employed a qualitative approach and a case study method. The sampling technique utilised non-probability sampling. The research subjects process was determined using purposive sampling. Data-collecting techniques include surveys, interviews, observation and documentation. The study^s findings in designing mathematics learning based on entrepreneurship demonstrated that the teachers paid attention to selecting material according to entrepreneurial concepts or problems, formulating basic competencies and indicators, and presenting concepts or problems related to the material that will be assigned to students. Students would work on concepts or problems to test their mathematical problem-solving ability. Keywords: Design, Mathematics- Entrepreneurship Share Link | Plain Format | Corresponding Author (Alpha Galih Adirakasiwi)

92	Education	ABS-205
IMPROVING GRADE XI STUDENTS VOCABULARY THROUGH EXTENSIVE READING IN SENIOR HIGH SCHOOL 4 KENDARI SUHARJUDDIN, WA SARIPAH, YAZID HUSAIN Universitas Bhayangkara Jakarta Raya, MTsN 1 Muna, SMPN SATAP 1 Sawerigadi Abstract The purpose of this research is to find out whether or not the application of extensive reading model could solve students vocabulary problems at grade XI IPA 5 of Senior High School 4 Kendari. This study is an action research study. The research is conducted in a single class (XI IPA 5) that consists of forty five students, in which the subjects were taken purposively. In collecting the data, the researchers used certain instruments i.e. Receptive Vocabulary Level Test, log and questionnaire. The finding showed that the students^ vocabulary increased significantly and the problems eventually solved from cycle 1 to cycle 3. After implementing extensive reading in first cycle, the students got 53.6 on average. There was an improvement on students^ vocabulary in the second cycle obtaining 58.9 on average. The third cycle was conducted with a hope of reaching the standard (65%). It was true that another improvement on this cycle appeared, they gained 67.2 on average as a proof that they attained the standard of 65%. The result of this research indicates that students^ vocabulary increased after applying extensive reading. Keywords: Improving, Students Vocabulary, Extensive Reading Share Link | Plain Format | Corresponding Author (Suharjuddin S.Pd, M.Pd)

93	Education	ABS-214
Post Covid-19 Pandemic Student^s Burnout Level in Boarding School^s Non-academic Programs Ulfah Nafiah, Fajar Ciptandi, Runik Machfiroh Telkom University Abstract Lifestyle changes during the pandemic have produced a unique character for the younger generation. This is a challenge for schools, especially with the boarding school model that accepts students post Covid-19 pandemic which may have more difficulties in adapting a new learning style. This study aims to measure the Bunrout Level that occurred in 2 batches of students after Covid 19 at SMAIT Assyifa Boarding School, Subang. The burnout assessment made was tested using SPSS 26. This research used quantitative method with final version of assessment through 320 student samples. The measurement results show that 85% students burnout level was in High category, 12,5% in Very High category, and 7,5% in Average category. Another result is the burnout level of students in the 2022/2023 class is higher than that of students in the 2021/2022 class. This research can be used as a reference for further research on how to overcome student^s burnout levels post Covid-19 pandemic at boarding schools so that learning can run optimally. Keywords: Boarding School, Burnout, Post Covid-19, Student Share Link | Plain Format | Corresponding Author (Ulfah Nafiah)

94	Education	ABS-219
Development of Entrepreneurship Module Based on Project- Based Learning (PjBL) to Improve Problem-Solving Ability in Entrepreneurship Lessa Roesdiana (a*), Nita Hidayati (b) Universitas Singaperbangsa Karawang Abstract This study aims to develop an entrepreneurship module based on Project- Based Learning (PBL) to improve problem-solving skills in entrepreneurship so that students can learn how to solve problems experienced by entrepreneurs. The design used in this study is a research and development model for developing a PBL-based entrepreneurship module for students in learning materials. The product development component was validated by material experts and module design experts and tested on students. The results of this study are that the validity of the material is excellent, the validity of the module design is good, the practicality of the module is excellent, and it has a significant positive effect on students^ problem-solving abilities in entrepreneurship. Thus, the PBL-based entrepreneurship module is valid, practical, and effective in learning. Keywords: PBL- Problem-solving Ability- Entrepreneurship Module Share Link | Plain Format | Corresponding Author (Lessa Roesdiana)

95	Education	ABS-222
The Effectiveness of Kinds of Rubber Rope Games Media to Improve Fine Motor Skills for Early Childhood Ega Trisna Rahayu, Rina Syafrida, Nurunnabilah, Haliza Syahnurmala Universitas Singaperbangsa Karawang Abstract Early childhood aged 5-6 years should be able to control hand movements using fine motor skill. However, in Karawang Regency, most of early childhood aged 5-6 years have fine motor skills disorders which indicated by a lack of ability to hold a pencil, control hand movements, cut to follow patterns. The current study aims to identify and analyze the effectiveness of Kinds Rubber Rope Games (Kiorroga) Media on improving fine motoric skills for early childhood in Karawang Regency. This study was done using The One Group Pretest-Posttest experimental design with 8 early childhood aged 5-6 years as respondents. The experimental was carried out in 14 times. The collected data were analyzed using paired T-Test Technique. The results showed that Kind of Rubber Rope Games (Kiorroga) media has a significant effect on improving fine motor skills for early childhood aged 5-6 years. It was confirmed by increasing early childhood ability to hold a pencil, control hand movements, and cut to follow patterns. Kind of Rubber Rope Games (Kiorroga) media is an appropriate tolls for improving fine motor skills in early childhood aged 5-6 years. Keywords: Kind of Rubber Rope Games (Kiorroga)- Learning Media- Fine Motor Skills- Early Childhood. Share Link | Plain Format | Corresponding Author (Ega Trisna Rahayu)

96	Education	ABS-223
The Effect Of Using Paper Plate Media On Expressive Language Skills In Early Childhood Rina Syafrida, Ega Trisna Rahayu, Dinda Nur Akmalia a)Study Program of Early Childhood Education, Faculty of Islamic Studies, Universitas Singaperbangsa Karawang, Karawang, Indonesia- b)Study Program of Physical Education, Faculty of Teacher Training and Education, Universitas Singaperbangsa Karawang, Karawang, Indonesia. Abstract Children aged 5-6 years should have the ability to to express their wishes verbally. Nevertheless, most of child aged 5-6 years in Karawang Regency still unnable to express their wishes because lack the confidence to tell stories and afraid to argue. The purpose of this study was to analyze the effect of paper plate media in stimulating expressive language skills on children aged 5-6 years. This study used a one group pretest and posttest experimental design involving 20 children aged 5-6 years from Karawang Regency. The data analyzed using T-Test technique. The results showed that paper plate media affected increasing expressive language in children aged 5-6 years by 40%. Paper plate media is a factor that plays an important role because it is attractive for children. This is shown by 8 of 20 children aged 5-6 years who are more confident about telling stories using paper plate media. Paper plate media is an appropriate teaching aids for stimulating expressive language for children aged 5-6 years. This property may be effective to utilized in kindergarten. Keywords: Early Childhood- Expressive language- Paper Plate Media Share Link | Plain Format | Corresponding Author (Rina Syafrida Syafrida)

97	Education	ABS-225
The Effect of Gender and High School Origin towards English Grammar Mastery Johan Arief Budiman, Harris Gadih Pratomo Fakultas Kedokteran Gigi Universitas Trisakti Abstract It is never easy to learn a second language. It is even more difficult to learn English as a second language. Grammar explanation may be more effective for adolescents and older learners who are more academically and cognitively mature than for younger children who have not yet developed analytic skills, according to some evidence. Female students outperform male students in the field of language. Differences in language attitudes between male and female students are important to note, especially during the learning process. College students come from a variety of high school backgrounds. The goal of this study is to determine the impact of gender and high school origin on grammar mastery. The subjects of this study were freshmen at Faculty of Dentistry, Universitas Trisakti who took English as a subject. The enrolment form revealed the gender, type, and location of high school origin. Grammar mastery was determined by averaging the midterm and final term results. SPSS was used to analyse the data, and the Anova test (p=0.05) was used. There was no statistically significant effect of gender and high school origin (type and location) on grammar mastery (p>0.05) among 77 respondents (62 females and 15 males). This study concluded that there is no gender superiority in English, and students from various high school types (private, public, or others) and locations (Jabodetabek, Java Island, or outside Java) demonstrated nearly same level of competency in grammar mastery. Keywords: Gender- Grammar mastery- High school origin Share Link | Plain Format | Corresponding Author (Johan Arief Budiman Budiman)

98	Education	ABS-234
The Effectiveness of Rope Ladder Physical Activity Media on Physical Motor Activity in Early Childhood Ega Trisna Rahayu, Rina Syafrida, Ine Nirmala, Ervina Istanti, Nursyamsi Universitas Singaperbangsa Karawang Abstract A pleasant environment is needed to increase student motivation in learning physical education, especially in the early elementary classes. The pleasant atmosphere can be created through the use of Rope Ladder (Rolade) Physical Activity learning media. The current study aims are to identify and analyze the effectiveness of Rope Ladder (Rolade) Learning Media for increasing learning motivation of early grade elementary school students in Karawang Regency. This research was done using the one group pretest-posttest experimental design with 19 students aged 7-8 years. The experimental was carried out in 12 times. The collected data were analyzed using paired T-Test Technique. The results showed that Rope Ladder (Rolade) Physical Activity learning media has a significant effect on improving early grade elementary school students motivation. This is evidenced by the increased ability of students in achievement motivation, motivation to foster social relations, and motivation in mastering physical education learning materials. Rope Ladder (Rolade) Physical Activity learning media is an appropriate tool for improving learning motivation in early grade elementary school students. Keywords: Early Childhood- Learning Motivation- Rope Ladder Physical Activity- Physical Motor Activity. Share Link | Plain Format | Corresponding Author (Ega Trisna Rahayu)

99	Education	ABS-235
The effectiveness of using CB Hoop media on children^s self-confidence Rina Syafrida-Ega Trisna Rahayu-Ervina-Nursamsi a)Study Program of Early Childhood Education, Faculty of Islamic Studies, Universitas Singaperbangsa Karawang, Karawang, Indonesia- b)Study Program of Physical Education, Faculty of Teacher Training and Education, Universitas Singaperbangsa Karawang, Karawang, Indonesia. Abstract Self Confidence is an important aspect that must be developed at an early age. Self-confidence can help children build positive relationships with other children, work together, and make children have good communication skills. However, self-confidence has not been optimally stimulated in some kindergarten schools in the Karawang district. Many children are found who are not confident when speaking in front of the class, some children are difficult to invite to group play activities. This study wanted to find out the effect of using CB Hoop media on children^s Self confidence in children aged 5-6 years. This research used a one-group pretest and posttest experimental design involving 15 children aged 5-6 years from Karawang Regency. The data was analyzed using the T-Test technique. From the research that has been conducted in 15 meetings, the data shows that there is a positive influence of CB Hoop media on children^s self-confidence. Children become more confident when speaking in front of the class, or talking to new people because they are trained to have the courage to speak while playing using CB Hoop media. This media is effective in increasing children^s self-confidence because it is consistently carried out in 15 meetings with interesting game variations. CB Hoop media is suitable for increasing children^s self-confidence. Keywords: CB Hoop media- Early childhood- Self Confidence Share Link | Plain Format | Corresponding Author (Rina Syafrida Syafrida)

100	Education	ABS-241
DEVELOPMENT OF MOVEMENT QUALITY INSTRUMENTS FOR PHYSICAL FITNESS ACTIVITIES BASED ON DEVELOPMENTAL PSYCHOLOGY OF CHILDREN AGED 13-18 YEARS Resty Gustiawati (a*), Terbit Surya (b), Alwi Sihab (c), Muhammad Surur a*, b,c,d)Faculty of Teacher Training and Education, Singaperbangsa University Karawang, Jl.HS.Ronggo Waluyo, Puseurjaya, Teleukjambe Tim ur, Karawang, West Java, 41361, Indonesia. *resty.gustiawati[at]fkip.unsika.ac.id Abstract The purpose of this study was to develop a quality instrument for physical fitness activities based on the Developmental Psychology of Children Aged 13-18 Years. This study uses the Research and Development method. This study took 24 students as subjects, 9 male students and 15 female students at the Branchbungin 9 Middle School, Bekasi Regency. The expert validation test in this movement quality instrument test involved Lecturers in the Physical Education Learning Evaluation Course, Lecturers in the Sports Test and Measurement Course and Physical Education and Sports Teachers. The reliability test uses the test-retest method with product moment correlation analysis with a value of 0.990 and a significance value of 0.000, which means that the Quality Instrument for Movement for Physical Fitness Activities is declared reliable. Experts and practitioners state that the Development of a Quality Movement Instrument for Physical Fitness Activities Based on Developmental Psychology for Children Aged 13-18 years is in the appropriate and valid category for use in schools. Thus the Development of a Movement Quality Instrument for Physical Fitness Activities Based on Developmental Psychology for Children Aged 13-18 years is declared suitable for use as a measuring tool for the quality of movement for physical fitness activities in students at school. Keywords: Instruments, Movement Quality, Physical Fitness, Developmental Psychology Share Link | Plain Format | Corresponding Author (Resty Gustiawati)

101	Engineering	ABS-259
Effect Of Pineapple Skin Eco Enzyme Concentration On The Middle Phase Emulsion In Enhanced Oil Recovery Jody Arfha Yusda, R Setiati*, A Ristawati Petroleum Engineering Department, Faculty of Earth and Energy Technology, Universitas Trisakti, Jakarta, Indonesia Abstract The need for petroleum continues to increase, and until now it is still supplied by the main sources of fossil and non-renewable fuels. Petroleum production, especially in old wells, is currently declining, so an Enhanced Oil Recovery (EOR) method was developed in the form of chemical injection using surfactants. The purpose of this study was to determine the effect of pineapple peel eco enzyme concentration on middle emulsion This is the laboratory study, using Eco Enzyme as a surfactant solution in salinity of 20000ppm and 40000ppm and concentration are 20%, 30%, and 40%. Phase behavior tests to find middle phase emulsion were carried out at a temperature of 60&#8451-. The resulting middle phase emulsion was 2.5% at all concentrations with a salinity of 20000ppm. At a salinity of 40,000 ppm, concentrations of 20% and 40% resulted in a middle phase emulsion of 1.25%, while at a concentration of 30% it produced 6.25%. Pineapple peel eco enzyme as a surfactant, capable of forming a stable middle-phase emulsion. The best middle phase emulsion at 6.25% was obtained from the surfactant composition eco enzyme at 40000 ppm salinity and 30% concentration Keywords: concentration, eco enzyme, middle phase emulsion, salinity Share Link | Plain Format | Corresponding Author (Rini Setiati)

102	Engineering	ABS-4
Analyzing User Color Preferences and Characteristic On Websites Using Demographic Information Pristi Sukmasetya, Agus Setiawan, Endah Ratna Arumi Universitas Muhammadiyah Magelang Abstract Colour has the potential to elicit emotions or behaviors, yet there is little research in which colour treatments in website design are systematically tested. Little is known about how colour affects trust or satisfaction on the part of the viewer. Although the Internet is increasingly global, few systematic studies have been undertaken in which the impact of colour on culturally diverse viewers is investigated in website design. This study has been conducted by an attitude assessment through an online user questionnaire to collect demographic data that influence the user^s color preferences and interests. Next, statistical analysis was done through a variety of tests including T-Test, ANOVA-Test and Duncan-Test. These tests are employed to find the relationship between user^s demographic features and his/her preferred color on websites. The results of this study can be useful to personalize the websites exploiting the extracted rules of colors Keywords: color, emotion, behavior, website Share Link | Plain Format | Corresponding Author (Agus Setiawan)

103	Engineering	ABS-264
VIRTUAL TOUR KAMPUS UNIMMA BERBASIS WEB MENGGUNAKAN TEKNOLOGI AUGMENTED REALITY Firmansyah Jaka Pamungkas1,P Hendradi*1,2 , A Setiawan1, S N M Mohmamad3 Program Studi Informatika, Fakultas Teknik, Universitas Muhammadiah Magelang Magelang , Jawa Tengah, Indonesia 2 Biomedical Computing and Engineering Technologies (BIOCORE) Applied Research Group, Faculty of Information and Communication Technology, Universiti Teknikal Malaysia Melaka 3Department of Interactive Media, Faculty of Information and Communication Technology, Universiti Teknikal Malaysia Melaka Abstract Informasi online yang tersedia pada website Universitas Muhammadiah Magelang (UNIMMA) saat ini hanya terbatas pada pemberitahuan seputar kegiatan kampus dan mahasiswa saja. Hal ini mengakibatkan calon mahasiswa yang berasal dari luar kota Magelang tidak memiliki gambaran detail mengenai lingkungan kampus. Untuk memaksimalkan hal tersebut, maka dibutuhan sebuah konten yang dapat menggambarkan lingkungan kehidupan kampus secara online, maka dibuatlah media digital Augmented Reality (AR) yaitu Virtual Tour. Konten ini di buat dengan Aplikasi blender 3D dan unity . Metode pengembangan yang digunakan dalam penelitian ini adalah Multimedia Develompent Life Cycle (MDLC). Dari hasil pengujian virtual tour berbasis website yang dibuat, dapat menampilkan lingkungan dan fasilitas yang dimiliki kampus UNIMMA serta dapat berjalan sesuai dengan fungsionalitasnya dan dapat dimanfaatkan calon mahasiswa untuk mengenali lingkungan kampus. Keywords: Virtual tour kampus, Augmented reality, Web Share Link | Plain Format | Corresponding Author (Purwono Hendradi)

104	Engineering	ABS-10
Experimental Study Of Performance Comparison Of Lithium Iron Phosphate Batteries and Supercapacitors On Electric Motorcycles Yuan Perdana- Hermansyah Politeknik Negeri Banjarmasin Abstract Electric vehicles generally use batteries for energy storage, but currently there are designs for electric vehicle energy storage using supercapacitors (SC) or a combination of batteries and SC. In previous research, an electric motorcycle was made using a Suzuki Shogun SP125 chassis and cover, 800-1000 BLDC motor and controller. This research is to get a comparison between the use of Lithium Iron Phosphate (LFP) and SC batteries that installed on electric motorbikes using 2 passenger weight variables. The data taken are mileage, speed, acceleration, and battery charging time. The LFP battery pack used consists of a 51.2Volt 18Ah LFP HX32700 battery. The capacitor used consists of 18 pieces of 2.7v 500F Capacitors arranged in series, resulting in a 48.6volt 27.78Farad supercapacitor. Tests were carried out by installing LFP and SC alternately on electric motorbikes with variable passenger weights of 67 kg and 118 kg. The results are obtained that the acceleration data with SC is higher than that with LFP, this is because the power output issued by SC is greater and faster than LFP. The disadvantage of SC in this research is that the power capacity is lower than that of LFP, resulting in a shorter electric motorcycle range. Keywords: battery- supercapacitor- electric motorcycle Share Link | Plain Format | Corresponding Author (Yuan Perdana)

105	Engineering	ABS-11
Analysis of Magnetic Pattern Distribution in a Mini-Permanent Magnetic Power Plant to Produce Optimal Electricity Agri Suwandi, Budhi Muliawan Suyitno, Eka Maulana, Lutfi Gangsar Prayogo, Dahmir Dahlan Department of Mechanical Engineering, Faculty of Engineering, Universitas Pancasila, Srengseng Sawah Jagakarsa, Jakarta 12640, Indonesia Abstract The use of electrical energy is becoming increasingly important in Indonesia, but the energy used is still dominated by fossil fuels by 87.64 percent. As a result, research is required to develop new energy sources. One of the renewable energies, the presence of a permanent magnet power plant, converts magnetic attraction and repulsion into rotary motion on a shaft to rotate a generator to produce electricity. The mini-permanent magnet power plant is expected to be capable of supplying household-scale electricity. This paper aims to obtain the optimal pattern of magnet location using the basic concept of V-Gate to achieve the highest rotational speed and thus produce a large amount of electric power. The experimental method used in this study entails creating a V-Gate magnetic pattern with a variable magnitude of angle and a base distance to rotational speed. According to the test results, the best angle is 5 degrees, and the best base distance is 24 mm. According to the measurements, the mechanical power generated is 300 Watts. Keywords: magnetic pattern- magnet permanent- mini power plant- optimization- electric power. Share Link | Plain Format | Corresponding Author (Agri Suwandi)

106	Engineering	ABS-268
Assessing Deep Learning Model Using AlexNet for Water Traffic Counting in Martapura River Nahdi Saubari, Wang Kunfeng College of Information Science and Technology, Program of Controlling Science and Engineering, Beijing University of Chemical Technology Abstract In recent years, the traffic of water transportation in Martapura river has been increased and creating many problems for the city and its environment. Hence, the traffic needs to be managed from time to time. Deep learning model might be used for traffic counting by detecting the ships. This study aims to assess AlexNet for traffic counting purposes in Martapura river. Data were collected two times a day for 3 months by using smartphone camera. Series of experiments were developed using Alexnet model to classify and detect ships or boats in Martapura River to draw a baseline for water traffic counting system. Result shows that Alexnet gives around 97% accurateness in detecting ships or other water vehicle as the main transportation. This certainly helps the traffic counting in Martapura river. Around 5 to 7 water vehicles were detected per hour. AlexNet also detect other floating objects like water plantation or plastic garbage. Other than object detection, AlexNet as Deep Learning technology can be used for water traffic counting globally. Keywords: Deep learning- traffic counting- river- AlexNet Share Link | Plain Format | Corresponding Author (Nahdi Saubari)

107	Engineering	ABS-13
Potential Use of Refrigerated Distiller in Improving Quality Consistency and Productivity of Balinese Distilled Drink I Nyoman Suamir(1), Made Ery Arsana(1), Ida Ayu Elistyawati(2) 1)Mechanical Engineering Department, Politeknik Negeri Bali, Campus Street, Kuta Selatan, Badung, Bali, 80364 Indonesia 2)Tourism Department, Politeknik Negeri Bali, Campus Street, Kuta Selatan, Badung, Bali 80364 Indonesia Abstract In Bali, there is an alcoholic drink that is traditionally distilled by Balinese villagers. The drink is well known as Arrack Bali distilled from fermented sap of palm flower. The use of traditional distillation equipment makes villagers unable to produce the drink with consistent quality. In fact, the demand for the quality is quite high because the drink is already in demand by foreign tourists. With these considerations, it is necessary to develop an affordable machine that is able to produce the Balinese distilled drink with good and consistent quality. This paper presents a local based distillation machine specifically developed for production of the Balinese distilled drink. The machine integrates novelties which comprise a refrigeration distiller and smart controller for both distiller and boiler. The distiller is a coil on tube heat exchanger which can absorb heat of Arrack vapor and condense it in the distiller tube. The distiller tube is cooled by refrigerant R134A which is flowing in the evaporator pipe that is coiled on the outer surface of the tube. Experimental investigation was established to evaluate the performance of the refrigerated distiller and the boiler of the novel and affordable distillation machine. The results showed that the refrigerated distiller and boiler can perform reliably with several temperature set and production process characteristics. In addition, production test results showed various good quality variants of Arrack Bali could be produced consistently with alcohol content ranging from 20% up to 40% by volume. These variants are resulted from production characteristics at boiler temperature varied from 87 up to 93 C and refrigerated distiller temperature from 5 to 27 C and corresponding production time from 1 hour up to 6 hours. Beside the potential to produce good and consistent quality Balinese distilled drink, the novel distillation machine was also found to noticeably improve the productivity of distillation process. Keywords: Refrigerated distiller- distillation machine- Balinese distilled drink- good productivity- consistent quality Share Link | Plain Format | Corresponding Author (I Nyoman Suamir)

108	Engineering	ABS-14
Improvement of the Bearing Capacity and Swelling of Ciampel Expansive Soil using Waste Foundry Sand Anita Setyowati Srie Gunarti (*), Yulvi Zaika, Septyan Adi Kuntoro, As^ad Munawir, Eko Andi Suryo, Harimurti Universitas Brawijaya Jl. MT. Haryono 167 Malang, Indonesia Abstract Road construction on expansive soil often suffers damage because of large shrinkage properties due to changes in water content. This study aims to obtain a solution for expansive soil improvement by utilizing local materials based on industrial waste as a stabilizing agent that also help to keep nature conservation. In this study, the soil was mixed with waste foundry sand as an additive material with a concentration of 2.5%, 5%, 7.5%, and 10% of the soil dry weight. Tests carried out included Compaction, California Bearing Ratio, and Swelling Potential based on ASTM standards. The soil stabilized with 10% WFS showed a significant increase in CBR value with changes of 64.89% (unsoaked) and 438.69% (soaked) to the original soil CBR value. WFS 10% in the soil was able to suppress the expansion value of the expansive soil by 93.16% to the swelling value of the original soil. WFS content of 10% in the soil can be recommended as an expansive soil stabilization material because it can increase the bearing capacity of the soil and reduce the level of swelling of the soil. Keywords: CBR- WFS- Expansive- Soil- Swelling Share Link | Plain Format | Corresponding Author (Anita Setyowati Srie Gunarti)

109	Engineering	ABS-270
PHARMACY STORE ONLINE WEBSITE ANALYSIS USING SIMILARWEB Erma Ari Widiati1*, Sennya Ardirra1, Listiana Luthfianti1, Hidayah Rochmiyanti1, Prasojo Pribadi2, Herma Fanani Agusta*1 1Program Studi Diploma III, Fakultas Ilmu Kesehatan, Universitas Muhammadiyah Magelang 2Program Studi Sarjana Farmasi, Fakultas Ilmu Kesehatan, Universitas Muhammadiyah Magelang Abstract Developments in the field of technology and accompanied by increasing internet users, especially in Indonesia, are increasingly spurring competition between businesses in cyberspace. The purpose of this research is to evaluate the performance of the website. The type of evaluation carried out is testing user interest using the SimilarWeb tool (https://www.SimilarWeb.com/). Researchers utilized the SimilarWeb platform by entering the website address of the online pharmacy category and conducting a categorical analysis of the website. The results of the analysis of several pharmaceutical websites (online pharmacy) on similarweb.com can be categorized into several categories of analysis. Pharmaceutical websites analyzed using similarweb.com include K24klik, Kfostore, Vivahealth, Halodoc, Alodokter, Kalbestore, and Klik-apotek. The analysis conducted on several pharmaceutical websites includes Global Rank, Country Rank, Category Rank, Total Visits, Bounce Rate, Avg Visit Duration, similarly ranked sites, Top Countries, Gender Distribution, Age Distribution, Top Categories, Top Topics, Category Distribution, and Social Network Distribution. Keywords: similarweb, online pharmacy sites, pharmacy websites Share Link | Plain Format | Corresponding Author (Herma Fanani Agusta)

110	Engineering	ABS-16
The Relationships Between Supply Chain Resilience and Firm Performance: The mediation Role of Digital Innovation Suwaryo Nugroho1,2, Rofiaty2, Nurofiq2, Surachman2 1,2 Industrial Engineering, Sekolah Tinggi Teknologi Muhammadiyah Cileungsi, Cileungsi, Bogor, West Java, Indonesia 16820 2 Economic and Business Faculty, Brawijaya University, Malang, East Java, Indonesia Abstract Purpose: This study aims to provide an explanation of the relationship between supply chain resilience and firm performance as well as the mediating role of digital innovation in West Java, Indonesia^s food and beverage manufacturing. The relationship between supply chain resilience and firm performance is found to be mediated by digital innovation, according to the author. The research thus adds to the author^s theoretical knowledge of the relationship between digital innovation and supply chain resilience and firm performance. Design/Methodology/Approach: This conceptual paper presents a review of the literature research on firm performance, supply chain resilience, dynamic capability, digital capability, and digital innovation. Preposition followed by theoretical analysis that needs more practical testing. Finding: This conceptual study uses digital innovation as a mediating variable since it is a dynamic enterprise capability that can explain the connection between supply chain resilience and firm performance. New insights into the relationship between supply chain resilience and firm performance are provided in this conceptual model article. Research limitation/Implication: For this conceptual paper, more study should be done to develop the theories of supply chain resilience, digital innovation, and dynamic capability, especially those variables that have a direct or indirect impact on firm performance. This given study will empirically test this proposition in order to support the preposition. Originality/Value: The author develops a new conceptual model to explain a hitherto unresearched relationship between supply chain resilience and firm performance on the basis of reviews of the literature in empirical research and conceptual papers. This conceptual model serves as a roadmap for additional theoretical and empirical investigation Keywords: Supply Chain Resilience, Dynamic Capability Theory, Digital Capability, Digital Innovation and Firm Performance Share Link | Plain Format | Corresponding Author (Wilarso Wilarso)

111	Engineering	ABS-17
Design and Development of a GIS-Based Covid-19 Monitoring Application for the Cileungsi District Area Nurkholis, Pria Sukamto, Wilarso Sekolah Tinggi Teknologi Muhammadiyah Cileungsi, Cileungsi, Bogor, Jawa Barat, Indonesia 16820 Abstract COVID-19 is an infectious respiratory disease caused by the SARS-CoV-2 virus. People who contract COVID-19 will experience some mild to moderate symptoms, and will recover without special treatment. However, some people will experience severe pain and require medical assistance. The massive spread of the Covid virus has attacked almost all regions throughout Indonesia, including the Villages in Ciluengsi District, Bogor Regency. The Muhammadiyah College of Technology (STT Muhammadiyah Ciluengsi) which is established in Cileungsi District, Bogor Regency, is obliged to help provide information on Covid cases to the people of Cileungsi District, Bogor Regency in general and the Villages in Ciluengsi District in particular, so that the Tri Dharma of Higher Education can be applied. The presentation of interactive and real-time information in the form of a GIS Map of the Ciluengsi District which is divided into each sub-district cluster will make it very easy to provide fast and measurable information. The target of this research is to provide information to the public, especially in the Cilungsi Sub-District and related stakeholders regarding the development of the Ciluengsi District Covid case in the form of an interactive and real-time GIS web as well as other supporting information. For the software development method using the prototype method because this method uses an approach to create programs quickly and gradually so that it can be evaluated by users. The application will be built using Leaflet as a Map framework because it can be relied upon to display data in its form and attributes. The use of the Postgre database will be very helpful in storing map data in the form of geo-spatial and other general data Keywords: SARS-CoV-2 virus, Infectious respiratory disease, Software Share Link | Plain Format | Corresponding Author (Wilarso Wilarso)

112	Engineering	ABS-18
DESIGNING AND BUILDING OF COCOPEAT AND COCOFIBER MACHINE WITH 15 KG/HOUR CAPACITY Suparno (a*), Andri Kurniawan (b), Ferry Bayu Setiyawan (c), Risky Setiyadi (d) a, c, d) Mechanical Engineering, Politeknik Negeri Samarinda, Samarinda, Indonesia *suparno[at]polnes.ac.id b) Chemical Engineering, Politeknik Negeri Samarinda, Samarinda, Indonesia Abstract Indonesia is one of the largest coconut producers, which in turn produces a lot of waste, especially coconut coir waste which can cause flooding if carelessly dumped in the river or carried by flood currents. Coconut coir waste that is no longer used can be reprocessed into a variety of finished and semi-finished products that have a high selling value. These products include coir fiber (Cocofibre), coir powder (Cocopeat), solid coir powder (Cocopeatbrick) cocomesh, cocopot, cocosheet, coco fiber board (CFB) and cococoir. This research aims to plan and design a machine that can process cocofiber into raw materials for its derivative products like making handicrafts such as doormats, etc. In planning and designing this machine, solidwork software and the calculation analysis method of the Sularso Machine Elements book guide were implemented. This machine is equipped with a sieve as an automatic separator between cocopeat and cocofibre in the form of a hexagonal cylinder. The machine produces cocopeat at 15 kg/hour and cocofiber at 5 kg/hour which is more time efficient and more effective compared to the traditional method or the existing similar machine. This study will be beneficial for small and middle class industries. Keywords: cocofibre- cocopeat- cocopeat machine Share Link | Plain Format | Corresponding Author (Andri Kurniawan)

113	Engineering	ABS-274
Whatsapp Bot Based Drug Consultation Prototype Novita Putri Dewita Sari 1 , Nafa Umma 1, Riza Nur Afifah 1 , Maulana Yusuf Baharudin 1 , Prasojo Pribadi 1.2* , Setiyo Budi Santoso 1.2* Universitas Muhammadiyah Magelang Pusat Studi Digital Farmasi Abstract Services through social media are in great demand because they are direct, convenient and effective besides that social media allows pharmacists to reach consumers quickly and more easily . Destination making WhatsApp Bot to make it easier for users and service providers to communicate, consult and obtain information quickly by utilizing the quick reply feature. The data collection method used for this research was conducted Literature Review. With the search strategy used for get source relevant information in order to question on the research could answer and get relevant references. Process in search conducted use machine Google Chrome search with site address https://scholar.google.co.id/. With keywords used in search that is ^ChatBot AND Whatsapp AND Health service^. Selected articles have criteria inclusion that is article national and international with range 10 years time lastly, a website based application, and load design about WhatsApp Bots. WhatsApp Bot was created for the benefit of consumers and also to assist health workers in carrying out health services as content health Application is a health service application that contains and presents information about health. Keywords: WhatsApp, Chatbot, Consulting Medicine, Medicine Share Link | Plain Format | Corresponding Author (Nafa Umma)

114	Engineering	ABS-19
Design And Construction Of 450 Va Permanent Magnetic Sync Generator For Vertical Axis Wind Power Generator House Scale With Low Wind Speed Asep Saepudin*, Asep Dharmanto, Hilman Sholih Sekolah Tinggi Teknologi Muhammadiyah Cileungsi Abstract A permanent magnet synchronous generator (PMSG) is a mechanical electrical device that can convert motion energy into electrical energy. It consists of two primary components: a stator without an iron core that the machine utilizes for low and low revolutions, and a rotor that uses permanent magnets. generator torque produced by a load. The need to develop permanent magnet generators for PLTB is caused by the reduction of petroleum and other fossil fuels, subsidies that continue to cut materials fuel oil for power generation that increases the price of electricity per KWH, as well as a global commitment to reduce greenhouse gas emissions. Wind power plants are the driving force behind PLTB, which we know is alternative and renewable power plants. The energy source is wind, which continues to exist and is easily accessible. This study aims to create a prototype of a laboratory-scale permanent magnet generator for wind power plants for residential homes that allows it to be placed close to the ground, no need to be directed towards the wind, due to the need for electricity for the community, the high cost of electricity, as well as the difficulty of installing electricity with a capacity of 450 VA. wind blowing, easy operation, and affordable power generation with wind speeds as low as 2.5 m/s. The research methodology used in this study entails doing a literature review, a wind source mapping survey from various sources to gather data on national wind speeds, designing a prototype and a permanent magnet generator prototype, and finally simulating the prototype using computation power. The prototype permanent magnet generator for the wind power plant features 12 poles, a 500 rpm (rotation per minute) rotor, and a 450 VA power capacity Keywords: Permanent magnet synchronous generator, Renewable power plant, Greenhouse, Wind power plant, low speed. Share Link | Plain Format | Corresponding Author (Wilarso Wilarso)

115	Engineering	ABS-276
Terrafloc Polimer Application to Increase Oil Recovery Sulthoni Amri, Rini Setiati*, Boni Swadesi Universitas Trisakti Abstract To determine the performance of terrafloc polymer, we must first know the characteristics of the polymer because all of these will affect the increase in oil recovery, many factors affect the performance of the polymer. Here using a micromodel to see the movement of oil in 2D, where the sweep efficiency of the polymer injection can be seen clearly. The micromodel flooding method was carried out in a series of studies, starting with micromodel preparation, followed by waterflooding and polymer injection at a certain injection flow rate. After that, it was analyzed using digital image analysis (DIA) how much the increase in oil recovery after injection of terrafloc polymer was carried out. This study focuses on the analysis of increased oil recovery by using different types of oil and injected with terrafloc polymers using the micromodel flooding method. Keywords: Terrafloc- Polimer, Increase, Oil Recovery, Micromodel Flooding Share Link | Plain Format | Corresponding Author (Sulthoni Amri)

116	Engineering	ABS-21
Seasonal Energy Efficiency of Split AC Systems Applied for Different Regions Across Indonesia Archipelago: a Numerical Approach I Wayan Temaja, I Nyoman Suamir, I Ketut Rimpung and I Nyoman Suparta Mechanical Engineering Department, Politeknik Negeri Bali, Campus Street, Kuta Selatan, Badung-Bali, 80364 Abstract Seasonal energy efficiency of latest split type AC systems which commonly use R410A, R32 or R290 refrigerants has been investigated in this paper. A numerical approach was applied on split AC system which operated at diverse environmental conditions of different regions across Indonesia archipelago. The regions were grouped into west, middle and east. In each group, 4 cities weather conditions were applied for simulation. The numerical simulation was conducted using a distributable program established under EES (Engineering Equation Solver) software. The seasonal energy efficiency of the AC system was evaluated for one year period based on corresponding regions weather conditions. The evaluations included power consumption, coefficient of performance (COP), and SEER (seasonal energy efficiency ratio). The investigation was also performed on AC system using different refrigerants included R410A, R32 and R290. The results showed that the AC system differently performed in accordance with the regions. AC system at west Indonesia region commonly performed better than middle and east regions. It was also found that the AC systems, applied at the same regions or the same weather conditions, using R290 could provide better seasonal energy performance than a such system using R32 or R410A. Therefore, R290 becomes a promising refrigerant for split type AC systems for applications across the Indonesia Archipelago. Additionally, this finding is also reinforced by the low impact of R290 on the global environment with GWP as high as 3 kgCO2e per kg. Keywords: Seasonal energy efficiency, split AC system, numerical approach, Indonesia Archipelago Share Link | Plain Format | Corresponding Author (I Nyoman Suamir)

117	Engineering	ABS-277
Smart Farming as an effort to fulfill people^s food independently Edy Kurniawan, Zaenal Arifin Universitas Muhammadiyah Ponorogo Abstract Fulfillment of current food must already be done independently. Method hydroponics is an alternative as a food fulfillment efficient addition. This method can be done anywhere without no depending on the area land. In the process of farming by the method of hydroponics then you must be able to control the temperature, humidity, PPM, and pH of water. The application of hydroponics is not conventionally so gives optimal results. Smart hydroponics is an implementation steps technology for easy monitoring and controlling. Method this hydroponic smart will process done by monitoring and controlling pH, Temperature, humidity, and PPM. The stability of some growth determinant plant flowers will give quality and quantity of results the maximum. The stable pH of raw water using the smart hydroponic method can be maintained between 5.5 and 6.5. In the smart method, this hydroponics Average temperature can^t be controlled to exceed 250 C. Requirement next is on PPM can be controlled according to the type of plants and also the age of the plant stably. Need PPM in implementation of these smart hydroponics controlled fish between 1050 and 1400. Of several variables that can be kept according to plant needs, it can improve quality and plant quantity. This matter is proven in one tested plant try (kale) by applying a smart hydroponic method this can be harvested in more than 2-3 days fast with the method conventional. As result, it can be obtained time quality improvement in the shorter crop by 5 - 10% of the hydroponic method conventional. Keywords: Hydroponics, Quality, Quantity, Harvest Production Share Link | Plain Format | Corresponding Author (Edy Kurniawan)

118	Engineering	ABS-23
Design of heater control equipment in interface mill product part separator process Miftahul Imtihan, Verry Surya Hendrawan, Ari Hartono Sekolah Tinggi Teknologi Muhammadiyah Cileungsi Abstract There are signs that the interface mill product^s supporting components have excessive amounts of damage, which has led to wasted plastic and iron materials. Using heater control devices properly is necessary to ensure that the influence is not long-lasting. This thermal control tool was created as a method of separating plastic and iron components in the interface mill product parts. Designing a heating control device to separate plastic from iron and allow the plastic to be recycled or reused while also allowing the iron to be recycled or reused is the strategy employed to accomplish the goals of this research. The outcomes shown that the handling of the product part separation process for interface mills may be done more precisely and successfully. The design of this instrument, in our opinion, makes it simple to separate parts, allowing damaged part material for interface mill products to be recycled Keywords: Heater control device, interface mill product part separator, recycle, reuse Share Link | Plain Format | Corresponding Author (Wilarso Wilarso)

119	Engineering	ABS-24
Student face recognition optimization utilizing the k-nearest neighbor method and particle swarm optimization in testing models and mobile devices Iskandar, Umar Tsani Abdurrahman, Mohamad Anas Sobarnas, Nanik Wuryani Sekolah Tinggi Teknologi Muhammadiyah Cileungsi Abstract In order to achieve high accuracy with a reasonable processing time for artificial intelligence-based facial recognition, the proper technique must be used. In this study, two different kinds of experiments were run on the program^s model and application sides. On the modeling side, the Linear Discriminant Analysis (LDA) approach is used for feature extraction, and the Particle Swarm Optimization (PSO) method is used for feature selection in the K-Nearest Neighbor (KNN) classification. The ORL database, which contains 357 facial photographs from 7 different people, with 51 images per person, served as the study^s dataset. The LDA and KNN algorithm models are anticipated to have accuracy increases of more than 80% in model testing. In tests, the PSO-based LDA and KNN algorithms achieved the maximum accuracy of more than 85% while processing data more quickly. Performance is increased by more than 5% as a result of modeling optimization on a PSO basis. The improvement in accuracy demonstrates that PSO is able to choose the best attributes that are suitable and practical to analyze during categorization. In addition to testing the application program, it is envisaged that modeling will be able to identify the suitable model device on a real system by measuring the response time of objects known as devices. Keywords: Facial Recognition, Artificial Intelligence, KNN, LDA, PSO Share Link | Plain Format | Corresponding Author (Wilarso Wilarso)

120	Engineering	ABS-25
Performance of Small Commercial AC System with R-32 Applied for Educational Building in Tropical Country: A Thermodynamic Simulation I Nyoman Suamir (1,a), I Wayan Adi Subagia (1,b), I Dewa Made Susila (1,c), Ketut Bangse (1,d) and Adi Winarta (1,e) 1) Mechanical Engineering Department, Politeknik Negeri Bali, Campus Street, Kuta Selatan, Badung, Bali, 80364 Indonesia Author Emails a) Corresponding author: nyomansuamir[at]pnb.ac.id b) adisubagia[at]pnb.ac.id c) dewamadesusila[at]pnb.ac.id d) ketutbangse[at]pnb.ac.id e) adi.winarta[at]pnb.ac.id> Abstract A numerical evaluation on the performance of a small commercial AC system with R32 as the refrigerant is presented. The evaluation is specifically applied for educational buildings in Bali Province, Indonesia. A digital model was developed in a standalone computer program U.CoolS V.1.12 which was established in the EES (Engineering Equation Solver) program. The digital model has been validated using data specified by AC manufacturers and then it was used to perform digital evaluation of the AC system based on ambient temperature of the Bali Province, Indonesia. Effects of condensing temperature in the condenser and evaporation temperature of the refrigerant in the evaporator on the compressor efficiency and AC system energy consumption were simulated. The evaluation results showed a strong influence of condensing temperature and evaporation temperature on the compressor performance and overall energy consumption of the split AC system. It was found that for 1 degree C increase in condensing temperature, the compressor power increased quite significantly around 2.1 percent, the cooling capacity of the split AC system decreased by 1.8 percent, COP and EER also decreased by 3.9 percent. For 1 degree C increase in evaporation temperature, it was found an increase in compressor power consumption of around 0.31 percent, an increase in cooling capacity of 4.4 percent and an increase in COP and EER of 4.1 percent. The results of this evaluation also showed that the split AC system performance using R290 refrigerant has a very good COP range from 3.27 to 5.95 with the implication that R32 refrigerant has the potential to be a refrigerant for the small commercial AC system. Keywords: Energy performance- small commercial AC system- digital model- educational building Share Link | Plain Format | Corresponding Author (I Nyoman Suamir)

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