Journal Universitas PGRI Semarang
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RANCANG BANGUN MEDIA PENGENALAN ALAT LABORATORUM KIMIA BERBASIS MOBILE AUGMENTED REALITY
No full textPenelitian ini dibelakangi oleh minimnya fasilitas laboratorioum IPA (Biologi, Fisika maupun kimia) di SMK Perdana Semarang. Upaya untuk permasalahan tersebut dapat dilakukan dengan media pengenalan alat laboratorium kimia berbasis mobile augmented reality yang dapat digunakan dengan smartphone android maupun ios, sehingga siswa dapat mengetahui alat-alat apa saja yang biasanya digunakan ketika sedang praktikum kimia. Penelitian ini dilaksanakan di SMK Perdana Semarang pada tahun ajaran 2022/2023. Model pengembangan aplikasi yang digunakan adalah MDLC (Multimedia Development Life Cycle). Untuk menguji kelayakan aplikasi media pengenalan alat laboratorium yang telah dihasilkan dilakukan pengujian kelayakan oleh validator yang terdiri dari ahli media, ahli materi dan respon pengguna yang dilakukan oleh siswa kelas X Akuntansi dan X Multimedia. Teknik pengumpulan data yang dilakukan dengan pengisian angket penilaian. Hasil penelitian menunjukan bahwa aplikasi media pengenalan alat laboratorium kimia yang dihasilkan dapat dikatakan sangat layak untuk digunakan dalam proses pembelajaran. Hal ini diketahui melalui perhitungan persentase kelayakan sebesar 93,21% sehingga aplikasi media pengenalan alat laboratorium kimia yang dihasilkan dapat dikategorikan sangat layak untuk digunakan sebagai media pengenalan dalam pembelajaran siswa
Effect of Chitosan Variation in Starch and Cellulose Based Biofoam
No full textStyrofoam's using as packaging is increasing. Styrofoam is difficult to decompose so alternatives such as biofoam are needed. This study explores the creation of eco-friendly packaging material by varying cellulose (0%, 3%, 5%, and 7%) and chitosan concentrations (0%, 2%, 4%, 6%, 8%, and 10%) in biofoam, aiming to replace non-biodegradable Styrofoam. Production is carried out by delignifying sugarcane bagasse and corn cobs with 10% NaOH, making tofu pulp starch and biofoam. The research focuses on tensile strength, absorption capacity, biodegradation, and morphology of the biofoam. Results indicate that chitosan concentration affects water absorption and biodegradation, while cellulose impacts tensile strength. The findings highlight the potential of biofoam made from tofu dregs, corn cobs, and sugar cane bagasse, offering a promising alternative to Styrofoa
Analysis Determination of the Best Employee Using the Simple Additive Weighting Method
No full textIn a company, quality human resources are very important to carry out business processes in accordance with the vision and mission that has been set. CV. Jaya Abadi is a company engaged in the procurement and repair services of various electronic devices and was founded in 2015. To encourage the creation of ever-increasing performance productivity, CV. Jaya Abadi selects the best employees using a decision support system. One of the methods used is the Simple Additive Weighting (SAW) method. In this study, the data used consisted of internal data and external data. There are several criteria that are taken into consideration in selecting the best employees, namely discipline, quality of work, cooperation, and behavior. The SAW method is proven to be effective and practical in calculating to determine the best employee recommendations at CV. Jaya Abadi. Thus, decision makers can consider these recommendations according to the priorities set
Analysis of Chemical Inventory Control in the GGCP Unit Using Forecasting and EOQ Methods at PT. XYZ
No full textPT. XYZ is a company operating in the energy producing industry. Which has 2 types of products, steam power and electricity. Steam in GGCP contains 3 chemicals, namely Amine, phosphate, oxygen scavenger. However, this company experienced an accumulation of excessive chemical stocks and reduced chemical consumption. This research aims to determine the number of company orders and determine overall inventory costs using forecasting methods and economical order quantities. In calculating the Total Inventory Cost (TIC) results, there is a significant calculation where TIC EOQ has an economical cost for Amine chemicals of IDR. 15,879,937 while the company's TIC is IDR. 36,226,539. with forecast results for Amine chemicals of 4148/ltr, phosphate of 3061/ltr, and scavenger oxygen of 5450/ltr. Meanwhile, the EOQ calculation results obtained a value for Amine chemicals of 1361/ltr, phosphate of 1164/ltr and 1554/ltr for oxygen scavenger chemicals
Utilization of Heat from Geothermal Well Pipes as Electricity for Road Lighting Based on The Internet of Things
No full textPT. Pertamina Geothermal Energy Area Lumut Balai has a very extreme work location with various contours, safety factors and lack of access to electricity for street lighting are things that need attention given the importance of street lighting in the company's operations. Street lighting is an important element that supports the comfort and safety of road users in their activities at night. The research objective is to design an IoT (Internet Of Things) system that can monitor the utilization of pipe heat into electrical energy for street lighting and provide street lighting needs around geothermal well pipes. In this study used thermoelectric as a tool to generate electrical energy from available heat. The IoT system is used to read data parameters as a tool to display temperature, voltage and current values on the LCD (Liquid Crystal Display) and the Thingspeak website. The temperature value is read by the MAX6675 thermocouple sensor while the INA219 sensor is used to read the voltage and current values. The focus of this research is to heat the thermoelectric so that it can produce electrical energy to turn on the lights as lighting and can monitor parameter data directly. The highest thermoelectric electrical energy output is at a temperature of 75.1ËšC. Where at this temperature a voltage of 2.32 V is generated and a current of 0.03 A. The lamp will turn on if the thermoelectric heat is fulfilled. The light turns on when the environment is dark and the light turns off when the environment is brigh
Single Sign On Using Keycloak Integrated Public Key Infrastructure for User Authentication In Indonesia's Electronic Based Government System
No full textThe government in carrying out its function as a public administration servant is regulated in law of the Republic of Indonesia number 25/2009 on public services. In this regulated about electronic government (e-government), many individuals use various web applications that require users to authenticate themselves to access each application. Many entities require various web- based applications for operational activities. This makes centralized access management for web-based applications very much needed. Currently, access management is often implemented using Single Sign On (SSO) with password authentication method. Security considerations arise against the use of passwords. This is because passwords have a vulnerability to brute forcing using a password list, and human nature often uses repeated or uncomplicated passwords. There is an alternative authentication method, namely Mutual TLS which utilizes Public Key Infrastructure (PKI). Users authenticate with X.509 digital certificates, so the authentication factor becomes something you have. This research aims to implement an integrated PKI SSO system and RBAC access automation. The approach of this project is research, design, implementation, and testing. The entire system is built with open-source software and implemented on a cloud infrastructure. The system has three subsystems, namely registration, login and RBAC access automation. All subsystems are tested according to the specified flow. The test results show that the registration subsystem has been successfully carried out as evidenced by the success of filling in personal data, approval flow, and downloading of certificates. The login subsystem was also successfully implemented, as evidenced by the existence of mTLS authentication with certificate validation. In testing the RBAC access automation subsystem, it is shown that the script created can perform access checks and access remediation if needed
ANALYSIS OF TRAFFIC CHARACTERISTICS TOTAL VOLUME, ACTIONS, QUEUE LENGTH AND DEGREES OF SATISFACTION AT THE UNSIGNIFICANT JUNCTION JL SEMARANG-BOJA, SEMARANG
No full textUnsignalized intersection Jl. Raya Cangkiran - Jl Cangkiran Gunung Pati, Tambangan kec.Mijen, Semarang is a three-way intersection that has access to the Cupan Terminal. Many people pass through this intersection. In conditions at these intersections, traffic jams occur during rush hours, and there is no traffic light which makes traffic conditions even more irregular, the safety of motorists is also threatened. Therefore, this study was carried out to analyze unsignalized intersections, planning the use of traffic lights, and knowing the traffic characteristics of Jl. Raya Cangkiran - Jl. Gunungpati Cup, Semarang. Data collection was carried out for 3 days, namely Saturday 25 February 2023, Monday 27 February 2023, and Wednesday, 1 March 2023 by taking peak hours at 06.00 WIB - 08.00 WIB, 12.00 WIB - 13.00 WIB, and 16.00 WIB - 18.00 WIB. Data collection methods used are capacity, degree of saturation, delays, queue opportunities, and Traffic Signaling Devices (APILL). The performance analysis of this unsignalized intersection uses the 1997 Indonesian Highway Capacity Manual (MKJI) to calculate the degree of saturation. As for the level of service using the Minister of Transportation Regulation No. 96 PM 2015. The results of the research are that in the existing conditions, alternative B is chosen as the best alternative for planning traffic lights with 2 phases of the 1-hour peak scenario on Saturday morning with a degree of saturation of 0.823 pcu/hour, a queue length of 103,045 m on the West approach, and a value delay of 14,784 veh/sec. From the results of the analysis, it can be concluded that the results of calculating the traffic evaluation for the current conditions obtained that the highest vehicle volume occurred on Monday, 27 February 2023. Then Jl. Raya Cangkiran - Boja, Semarang, fulfills the criteria for installing traffic lights and needs to install traffic lights or traffic control lights. As well as from the 3 planned alternatives, alternative B was chosen to install a 2-phase traffic signal light
Pelatihan Aktivitas Fisik dengan tujuan Pencegahan Penyakit Persendian
No full textABSTRACTJoint disease is the occurrence of pain in the joints followed by a feeling of stiffness, redness and swelling which is not caused by a collision or accident (Ministry of Health, Republic of Indonesia, 2018). Basic health research (Riskesdas) shows that the prevalence of joint disease nationally reaches 7.30%. This data shows that joint disease is a disease that knows no age. The data shows that joint disease can attack a person from the age of 15 years. The purpose of this service is to provide education to the public about the risks faced when a person rarely does physical activityThe method of community service is carried out by socializing and training "mini training" with physical activity that can prevent the risk of degenerative diseases, especially joint diseases. The target participants for this service are 20 people who are members of the Indonesian Sports Health and Achievement Potential Development (P3KORIN). The results of this training are then for participants to increase their knowledge about the management of degenerative diseases, especially joint diseases and can directly carry out physical activity treatments to the community in an effort to prevent the risk of joint disease. In conclusion, at this time our concern should not only focus on infectious diseases caused by viruses and bacteria but also must focus on non-communicable diseases or degenerative diseases which are more caused by unhealthy patterns and lifestyles but have the same risks. to death. Therefore, it is important to continue to educate the public about degenerative diseases, their risks and prevention.ABSTRAKRiset kesehatan dasar (Riskesdas) menunjukkan hasil bahwa prevalensi penyakit persendian secara nasional mencapai 7,30% (Kementerian Kesehatan RI, 2018). Data ini menunjukkan bahwa penyakit persendian merupakan salah satu penyakit yang tidak mengenal usia, pada data tersebut menunjukkan hasil bahwa penyakit persendian dapat menyerang seseorang sejak usia 15 Tahun. Sedangkan provinsi Sulawesi Selatan termasuk provinsi yang mempunyai prevalensi cukup tinggi yaitu sebesar 6,39%.Tujuan dari pengabdian ini adalah untuk memberikan edukasi kepada masyarakat tentang resiko yang dihadapai ketika seseorang jarang melakukan aktifitas fisikMetode pengabdian kepada masyarakat dilakukan dengan sosialisasi serta pelatihan "mini training" dengan aktivitas fisik yang dapat mencegah resiko penyakit degeneratif khususnya penyakit persendian. Target peserta pengabdian ini adalah 20 orang yang tergabung dalam LSM Pengembangan Potensi Prestasi dan Kesehatan Olahraga Indonesi (P3KORIN). Hasil dari pelatihan ini kemudian bagi peserta menambah pengetahuannya tentang manajemen penyakit degeneratif khususnya penyakit persendian serta dapat secara langsung melakukan treatmen aktivitas fisik kepada masyarkat dalam upaya pencegahan resiko penyakit persendian. Kesimpulannya, saat ini kekhawatiran kita tidak boleh hanya terfokus pada penyakit-penyakit menular yang disebabkan oleh terjangkitnya virus dan bakteri tetapi juga harus berfokus pada penyakit-penyakit tidak menular atau penyakit degeneratif yang lebih disebabkan oleh pola dan gaya hidup tidak sehat tetapi memiliki resiko yang sama sampai pada kematian. Oleh karena itu penting untuk terus mengedukasi masyarakat tentang penyakit degeneratif, resiko serta pencegahannya. Sehingga dari pengabdian ini akan bertambah lagi orang-orang yang dapat memberikan edukasi dan pembinaan kepada masyarakat dalam upaya pencegahan penyakit persendian dan penyakit degeneratif secara umum
Pendampingan Pencegahan dan Perawatan Cedera Olahraga Melalui Sport Massage pada Atlet PABERSI Kabupaten Jepara
No full textPowerlifting is a sport with a very high risk of injury because frequent, high-volume and high-intensity training will strain the muscles. The Jepara Regency Pabersi Team in carrying out training camps and matches requires an expert in injury handling and care as well as sports massage so that when a sports injury occurs it can be handled immediately. This PKM activity aims to provide assistance in the prevention and maintenance of sports injuries and sport massage to Pabersi athletes in Jepara Regency who are conducting training camps in preparation for the 2023 Central Java Provincial Porprov competition. The method used is analysis and direct practice on each athlete. who need sports massage and treatment of injuries both due to spasm, over use, buildup of lactic acid as well as muscle and joint injuries. The activity participants were all Pabersi athletes from Jepara district, totaling 7 people. The results shows that there is an increase in achievements of Pabersi athletes in Jepara Regency.ABSTRAKOlahraga Angkat Berat merupakan olahraga yang resiko terjadinya cedera sangat tinggi dikarenakan seringnya latihan dengan volume dan intensitas yang tinggi akan membuat otot menjadi tegang. Tim Pabersi Kabupaten Jepara dalam melaksanakan pemusatan latihan dan pertandingan membutuhkan seorang ahli dalam penanganan dan perawatan cedera serta sport massage sehingga saat terjadi cedera olahraga bisa langsung tertangani. Kegiatan Pengabdian ini mempunyai tujuan memberikan pendampingan dalam pencegahan dan perawan cedera olahraga serta sport massage pada atlet Pabersi Kabupaten Jepara yang sedang melakukan pemusatan latihan dalam persiapan dan pertandingan Pra Porprov Jawa Tengah tahun 2023. Metode yang digunakan adalah analisis dan praktikum langsung pada masing-masing atlet yang membutuhkan sport massage dan penanganan cedera baik itu dikarenakan spasme, over use, penumpukan asam laktat serta cidera otot dan persendian. Peserta kegiatan adalah semua atlet Pabersi kabupaten Jepara yang terdiri dari 7 orang atlet. Hasil dari kegiatan ini menunjukkan adanya peningkatan prestasi atlet Pabersi Kabupaten Jepara
HUBUNGAN ANTARA DUKUNGAN SOSIAL DAN EFIKASI DIRI DENGAN HASIL BELAJAR MATEMATIKA SISWA
No full textPenelitian ini dilatarbelakangi oleh rendahnya hasil belajar matematika siswa ,berdasarkan hasil pra survei dapat diketahui bahwa hasil belajar matematika dipengaruhi oleh dua faktor yaitu faktor eksternal seperti kurangnya dukungan dan perhatian orang tua, dan fasilitas belajar yang kurang memadai atau bisa disebut faktor dukungan sosial, faktor internal berupa kurangnya keyakinan akan kemampuan yang dimiliki dan minat untuk belajar yang cenderung rendah atau bisa disebut faktor efikasi diri. Masalah pokok yang dikaji yaitu adakah hubungan antara dukungan sosial dan efikasi diri dengan hasil belajar matematika siswa di SMA Negeri 9 Purworejo, dalam penelitian ini menggunakan simpel random sampling maka dengan sampel sebanyak 155 siswa. Alat pengumpulan data menggunakan skala psikologis dan data dokumentasi rata-rata nilai rapor. Analisis data yang digunakan pada uji hipotesis menggunakan uji regresi ganda. Hasil penelitian ini menunjukkan bahwa ketiga variabel memiliki koefisien korelasi sebesar 79,3%, menunjukkan bahwa dukungan sosial berhubungan secara positif dan signifikan dengan hasil belajar matematika, artinya semakin tinggi dukungan sosial dan efikasi diri yang dimiliki siswa maka akan semakin tinggi hasil belajar matematika yang diperoleh siswa