Publisher: Universitas Udayana (Total: 68 journals)   [Sort alphabetically]

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E-J. of Tourism     Open Access   (Followers: 11)
E-Jurnal Manajemen Universitas Udayana     Open Access   (Followers: 10)
Matrik : Jurnal Manajemen, Strategi Bisnis dan Kewirausahaan     Open Access   (Followers: 7)
Sport and Fitness J.     Open Access   (Followers: 5)
Advances in Tropical Biodiversity and Environmental Sciences     Open Access   (Followers: 5)
e-J. of Linguistics     Open Access   (Followers: 4)
Buletin Studi Ekonomi     Open Access   (Followers: 4)
Buletin Veteriner Udayana     Open Access   (Followers: 3)
J. of Marine and Aquatic Sciences     Open Access   (Followers: 2)
Agrotrop : J. on Agriculture Science     Open Access   (Followers: 2)
J. of Food Security and Agriculture     Open Access   (Followers: 2)
Majalah Ilmiah Peternakan     Open Access   (Followers: 2)
Simbiosis : J. of Biological Sciences     Open Access   (Followers: 2)
E-Jurnal Medika Udayana     Open Access   (Followers: 2)
Jurnal Master Pariwisata (J. Master in Tourism Studies)     Open Access   (Followers: 2)
Jurnal Ergonomi Indonesia (The Indonesian J. of Ergonomic)     Open Access   (Followers: 2)
E-J. of Cultural Studies     Open Access   (Followers: 2)
Majalah Ilmiah Teknologi Elektro : J. of Electrical Technology     Open Access   (Followers: 2)
J. of Veterinary and Animal Sciences     Open Access   (Followers: 1)
Linguistika : Buletin Ilmiah Program Magister Linguistik Universitas Udayana     Open Access   (Followers: 1)
E-Jurnal Ekonomi dan Bisnis Universitas Udayana     Open Access   (Followers: 1)
COPING (Community of Publishing in Nursing)     Open Access   (Followers: 1)
itepa : Jurnal Ilmu dan Teknologi Pangan     Open Access   (Followers: 1)
Humanis : J. of Arts and Humanities     Open Access   (Followers: 1)
E-Jurnal Agroekoteknologi Tropika (J. of Tropical Agroecotechnology)     Open Access   (Followers: 1)
J. of Health Sciences and Medicine     Open Access   (Followers: 1)
E-Jurnal Ekonomi Pembangunan Universitas Udayana     Open Access   (Followers: 1)
Jurnal Ilmiah Akuntansi dan Bisnis     Open Access   (Followers: 1)
Archive of Community Health     Open Access   (Followers: 1)
Jurnal Matematika     Open Access   (Followers: 1)
Jurnal Ekonomi Kuantitatif Terapan     Open Access   (Followers: 1)
Indonesia Medicus Veterinus     Open Access   (Followers: 1)
Jurnal Veteriner     Open Access   (Followers: 1)
Jurnal Magister Hukum Udayana (Udayana Master Law J.)     Open Access   (Followers: 1)
Jurnal Spektran     Open Access   (Followers: 1)
Jurnal Ilmu dan Kesehatan Hewan (Veterinary Science and Medicine J.)     Open Access   (Followers: 1)
Public Health and Preventive Medicine Archive     Open Access   (Followers: 1)
Bumi Lestari J. of Environment     Open Access  
E-Jurnal Akuntansi     Open Access  
Jurnal Biologi Udayana     Open Access  
Jurnal Farmasi Udayana     Open Access  
Jurnal BETA (Biosistem dan Teknik Pertanian)     Open Access  
Jurnal Rekayasa dan Manajemen Agroindustri     Open Access  
Piramida     Open Access  
Jurnal Kimia (J. of Chemistry)     Open Access  
Indonesian J. of Legal and Forensic Sciences     Open Access  
Kertha Patrika     Open Access  
Jurnal Destinasi Pariwisata     Open Access  
Lingual : J. of Language and Culture     Open Access  
Jurnal Arsitektur Lansekap     Open Access  
Buletin Fisika     Open Access  
Intl. J. of Engineering and Emerging Technology     Open Access  
Jurnal Analisis Pariwisata     Open Access  
Udayana J. of Law and Culture     Open Access  
J. of Electrical, Electronics and Informatics     Open Access  
Jurnal IPTA     Open Access  
Jurnal Kepariwisataan dan Hospitalitas     Open Access  
Jurnal Ilmu Komputer     Open Access  
Lontar Komputer : Jurnal Ilmiah Teknologi Informasi     Open Access  
JBN (Jurnal Bedah Nasional)     Open Access  
Jurnal Ilmiah Merpati (Menara Penelitian Akademika Teknologi Informasi)     Open Access  
Intisari Sains Medis     Open Access  
Jurnal Energi Dan Manufaktur     Open Access  
Jurnal Ilmiah Mahasiswa SPEKTRUM     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Ecotrophic : J. of Environmental Science     Open Access  
Ruang-Space: Jurnal Lingkungan Binaan (J. of The Built Environment)     Open Access  
Cakra Kimia (Indonesian E-J. of Applied Chemistry)     Open Access  
Similar Journals
Journal Cover
Jurnal Ilmiah Mahasiswa SPEKTRUM
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2302-3163
Published by Universitas Udayana Homepage  [68 journals]
  • RANCANG BANGUN APLIKASI SELULER PENYEDIA JASA PERAWATAN DAN KECANTIKAN
           MENGGUNAKAN FRAMEWORK FLUTTER

    • Authors: Jauzaa Maylia Suhendro, Made Sudarma, Duman Care Khrisne
      Pages: 68 - 82
      Abstract: The development of technology in this era of globalization has provided many benefits
      in human life, one of which is smartphones. In this modern era, looking neat and attractive is a
      daily necessity for people, especially women. To get beauty care services, people usually have
      to look salons and wait their turn. This takes a long time for beauty care service enthusiasts.
      Based on the existing background, a beauty care service provider application design was built
      using the flutter framework and android operating system with the aim of making it easier for
      users to find care and beauty services. In this application there are 3 users, namely
      Administrators who are in charge of controlling Customer and Partner data, Customers as users
      who are looking for care and beauty services, and Partners as people who offer care and
      beauty services. Based on tests carried out using the Black Box method, the overall
      functionality of the application has been declared successful in accordance with its respective
      functions and objectives. While the test results using the System Usability Scale (SUS) method
      in the application, respondents gave a score with an average value of 73.75 which means that
      the test results have a value above average. It can be concluded that the application can run
      well and can be Accepted (Acceptable).
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p9
      Issue No: Vol. 8, No. 2 (2021)
       
  • DESAIN.PEMBANGKIT.LISTRIK.TENAGA SURYA.(PLTS).MENGIKUTI.POLA.ATAP
           WANTILAN.DESA.ANTOSARI.UNTUK MEMENUHI.DAYA.3600.WATT

    • Authors: I Gusti Bagus Wiradhi Yogathama, I Wayan Arta Wijaya, I Nyoman Budiastra
      Pages: 83 - 90
      Abstract: The design of the solar power plant (PLTS) at the Antosari village wantilan is a research that
      aims to realize the use of new and renewable energy which is one of the solutions in
      overcoming electricity needs, saving fossil energy and assisting in the realization of Governor
      Regulation 45/2019 concerning Bali Clean Energy. This study carried out the design and
      calculations in the design of the PLTS Atap Antosari Village. The PLTS design is carried out by
      paying attention to and taking into account the tilt angle of the Helioscope Software, designing
      the placement of the solar panel modules, designing the inverter, configuring the circuit, taking
      into account the number of batteries used, selecting the Battery Control Unit and calculating the
      profit on investment. The results of the simulation on the helioscope software are the number of
      solar modules as many as 72 units, installed at an angle of 14.95o which can supply a battery
      with a capacity of 500Ah. The simulation also determines the use of an inverter that uses a 4kW
      inverter which produces a power of 3.6 kWp. The ability of the installed solar module to flow a
      current of 97.56A so that the full charge condition is obtained for 6 hours. Research initial
      capital of Rp. 201,400,000 with a return of Rp. 1,325,376, - per month, so that the financing for
      installing PLTS will return in 2034 (13 years)
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p10
      Issue No: Vol. 8, No. 2 (2021)
       
  • PrENGARUH.V/ARIASI.JUrMLAH.SUmDU-TERHAfDAP DiAYA OUTPUgT1PrADA2PROTObTYPE
           PEMBAyNGKIT2LIShTRIK> TENAxGA[MIKRO4HIuDRO0(PLrTMH) DEtNGAN9
           MENGGUtNAKAN;TUoRBIN’KAPLAN

    • Authors: I Komang Gede Darma Yasa, I Wayan Arta Wijaya, I Made Suartika
      Pages: 91 - 98
      Abstract: The Kaplan5Turbin is6a typepof turbine-that.can’be used=as an initial propolusion in the
      PLTMH system. The;Advantage; of this;Kaplan’Turbin is that it.can be;applied to;a low head with a
      high water flow rate..This study/aims;to’analyze’the’performance’of the Kaplan turbin with 5 variations
      of the number of blades’consisting’of 3,4,5,6 and[7blades. The[maximum[rotational[speed[obtained by
      the turbine with the;number;of;blades;5 with,an,average,value 216,8 rpm,before coupling with the
      generator. The,maximum/generator.rotational.speed that.can be.obtained.on a.turbine. that has the
      number of blades of is 865,9 rpm before .being loaded.and.749,9 rpm for the9 after load9condition .
      The voltage ,9current , and power9generated0are 8,7980volts, 0,419amperes,8and 3,59 watts
      respectively with a maximum torque 0,206 Nm, and efficiency of 1,53%
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p11
      Issue No: Vol. 8, No. 2 (2021)
       
  • PERAMALAN KEBUTUHAN ENERGI LISTRIK JANGKA PANJANG DI PROVINSI BALI RENTANG
           TAHUN 2020 – 2030 MENGGUNAKAN NEURAL NETWORK

    • Authors: Axel Adamma Diwanda, I Nyoman Setiawan, Widyadi Setiawan
      Pages: 99 - 109
      Abstract: Bali Province is one of the provinces with densely populated areas, hence the availability
      of electricity is very important for life sustainability. In this research, electricity demand
      forecasting was conducted in Bali Province for the period of 2020-2030. The method used to
      forecast was neural network which has the advantage of being able to do an adaptive learning
      based on the data used for training. In this forecasting process that used neural network, the
      neural network toolbox (nntool) on MATLAB 2013a was used. Network architecture used was
      feed-forward backpropagation. In this research, layer combination applied was 4 – 12 – 1, with
      4 input data such as population, PDRB, PDRB per capita and IHK. Network parameter applied
      in this research was training function TRAINGDX, activation function TANSIG and PURELIN
      (output), performance function MSE and learning function TRAINGD. The final result of Bali
      Province electricity demand forecasting in 2020 the demand for electricity is 5772 GWh, in 2025
      it will increase to 6523 GWh and in 2030 become 8551 GWh. This forecasting MAPE againts
      the RUKN 2019 result was 3.29%, which is under the PLN regulation that is 10%.
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p12
      Issue No: Vol. 8, No. 2 (2021)
       
  • PENGARUH VARIASI SUDUT BUKAAN GUIDE VANE TERHADAP KINERJA PROTOTYPE PLTMH
           DENGAN TURBIN KAPLAN

    • Authors: I Nyoman Sudiatmika, I Wayan Arta Wijaya, I Made Suartika
      Pages: 110 - 118
      Abstract: The increase in the need for electrical energy in Indonesia is increasing along with
      population growth. Followed by the depletion of fuels originating from fossil energy. Based on
      geographic conditions, Indonesia has many rivers so that it has the potential to generate
      electricity by utilizing the flow of water which is called PLTMH (Microhydro Power Plant). In
      realizing this PLTMH, one type of water turbine can be used, namely the Kaplan turbine, where
      this type of turbine works at low head conditions with large discharge. The purpose of this
      research is to analyze the performance of the Kaplan type turbine guide vane prototype at
      angles of 15º, 30º, 45º, 60º, 75º, and 90º to meet the electricity demand in Indonesia. After
      being examined based on all the variations tested, the maximum value of the turbine rotational
      speed at an opening of 15º with the rotation values obtained before and after coupled with the
      generator were 249.5 rpm and 216.5 rpm. The value of the generator rotation before and after
      the 30 Watt load coupling is 1096.6 rpm and 999 rpm. Voltage, current, and power produced
      are 9,1 Volts, 0,68 Amperes, and 6,18 Watts. The resulting torque of 0,27 Nm. The greatest
      efficiency was obtained at a combination of the opening angle of the guide vane of 15º at
      2,62%.
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p13
      Issue No: Vol. 8, No. 2 (2021)
       
  • STUDI KOORDINASI KERJA RELAI JARAK SEBAGAI PENGAMAN CADANGAN PADA SALURAN
           150 KV GIS PESANGGARAN-GI NUSA DUA

    • Authors: Deoka Gusti, I Gede Dyana Arjana, Cokorde Gede Indra Partha
      Pages: 119 - 127
      Abstract: The development of Pesanggaran Conventional Substation into the Pesanggaran Gas
      Insulated Switchgear (GIS) as a form of increasing the reliability of the electric power system in
      Bali which led to changes in the protection system configuration on the transmission line
      connecting the GIS Pesanggaran and Nusa Dua Substation. The distance relay that was
      previously functioning as a primary protection was changed to backup protection due to the lack
      of selectivity of the distance relay in isolate the disruption and as the backup protection if the
      main protection experiencing a failure. Simulation testing using power system analysis software
      after determining the value of the distance relay setting and tested with short circuit at 110%
      and 180% of the transmission line length shows the distance relay has worked according to the
      P3B JB regulation No. 211/151/P3B/2010 and distance relay can detect disruption in zone 2
      with a delay time of 0,815 seconds and detect disruption in zone 3 with a delay time of 1,615
      seconds.
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p14
      Issue No: Vol. 8, No. 2 (2021)
       
  • PENGARUH PENAMBAHAN SISTEM IOT RASPBERRY PI TERHADAP KECEPATAN CETAK DAN
           TINGKAT PRODUKTIVITAS OPERATOR 3D PRINTER REPRAP

    • Authors: I Putu Ade Chandra Priyatna, I G A P Raka Agung, Yoga Divayana
      Pages: 128 - 137
      Abstract: Most of desktop-scale 3D printers are based on the open-source design of the Replicating
      Rapid Prototyper (REPRAP) community. One aspect that can be developed in REPRAP 3D
      printers is the addition of Internet of Things (IoT) technology. Therefore, a Raspberry Pi-based IoT
      system that can be implemented on a REPRAP 3D printer is developed. The IoT system allows
      the 3D Printer to connect into internet network and has a website-based interface. This study aims
      to compare the impact of Raspberry Pi based IoT systems implementation on the 3D printing
      speed and to measure productivity level of 3D printer operator. Testing is done by printing four
      objects when the IoT system has not been added to the 3D printer and printing four objects when
      the IoT system has been added to the 3D printer. In testing, the data on the printing time of each
      object is obtained, this data is used to compare the print speed between before and after the 3D
      printer was added to the IoT system. Furthermore from testing, the data of time required by
      operators to prepare and monitor the performance of 3D printers is also obtained, this data is used
      to compare the productivity levels of 3D printer operators before and after adding the IoT system.
      Based on the test results, it was found that 3D printers with IoT systems have faster print
      preparation times than 3D printers without IoT systems. However, 3D printers with IoT systems
      have a longer machine time than 3D printers without IoT systems. The operator productivity level
      for 3D printers with IoT systems is higher than 3D printers without IoT systems.
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p15
      Issue No: Vol. 8, No. 2 (2021)
       
  • APLIKASI MOBILE DETEKSI PENYAKIT DEMODEKOSIS PADA ANJING MENGGUNAKAN
           METODE CONVOLUTIONAL NEURAL NETWORK

    • Authors: Ardy Wijaya, Duman Care Khrisne, Lie Jasa
      Pages: 138 - 148
      Abstract: Demodex is a skin disease in dogs caused by the protozoan mite Demodex
      follicularumvar canis or Demodex canis. These mites are found in the hair roots and sometimes
      in the glands, almost the entire life cycle of this type of mite is on the skin, if it lasts for a long
      time it can cause death in dogs that are infested by these lice This study aims to detect
      demodicosis in dogs with a mobile application using a convolutional neural network method
      with a squeezenet architecture model with radam optimization. This application works by taking
      pictures directly through the cellphone camera then processing it with a trained model then the
      output of this application displays the probability value of the dog being indicated as demodex
      or not. Based on the results of testing using the black box testing method, the overall
      functionality of the application has been declared successful in accordance with its respective
      functions and objectives. From the results of validation data testing using 60 validation data,
      based on the accuracy demodecosis detection application is able to recognize validation data
      correctly as many as 45 data and 15 data has not been properly recognized, so that the
      accuracy value is 75% and the f1-score value is 0,595.
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p16
      Issue No: Vol. 8, No. 2 (2021)
       
  • KINERJA PROTOKOL NETWORK REDUNDANSI VRRP, HSRP DAN GLBP PADA LAYANAN VIDEO
           STREAMING

    • Authors: I Putu Gede Krsna Yudha Dharma, Pande Ketut Sudiarta, Widyadi Setiawan
      Pages: 149 - 159
      Abstract: Nowadays streaming video services have become the main need for internet users. To
      keep the streaming video service awake, an alternative path is needed to avoid network failure.
      In creating an alternative path, you can use first hop redundancy protocol (FHRP). In FHRP
      there are three redundancy protocols including VRRP, HSRP and GLBP. The purpose of this
      study is to find out better protocol performance, especially by using streaming video services.
      The method used is to simulate redundancy protocol using GNS-3 software with 3 scenarios
      that run including normal network, down network and recovery network. As for testing each
      scenario including testing routers with priority, route trace route, link transfer time and quality of
      service (QoS) video streaming. Based on the results of the study, it was obtained that GLBP
      protocol has better performance with an average link transfer time of 1.51 seconds, delay of
      8.12 ms, packet loss of 0 % and throughput of 1,248 Mbps. This is because in GLBP protocol
      there is a load balancing feature that can split the load equally and utilize resources more
      effectively from each router.
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p17
      Issue No: Vol. 8, No. 2 (2021)
       
  • RANCANG BANGUN PROTOTYPE TURBIN KAPLAN SKALA PLTMH

    • Authors: Made Andi Kusumayana B, I Wayan Arta Wijaya, I Gusti Ngurah Janardana
      Pages: 160 - 168
      Abstract: PLTMH is a type of generator that utilizes water resources for its workings. Utilization of
      water resources is still minimally carried out by the community, especially by students of
      Electrical Engineering at Udayana University because it must be implemented directly on a
      large enough river flow so that it is difficult to study. So, in this study, a prototype modeling of
      MHP using a Kaplan turbine was designed which is useful for the learning process before being
      implemented directly in the river. The Kaplan turbine prototype is designed with a head of 2 m,
      an input pipe of 2xdimxand a discharge of 12 L/s, has a total of 30 guide blades,xwith an opening
      angle of 30o, with a lengthxofx0.05 meters, a widthxof 0.045 meters, an inside diameterxofx0.33
      metersxandxan outerxdiameterxofx0.42 meters. Thisxprototype has a total of 5 driving blades,
      withxanxouter diameterxofx0.16xmeters, a shaft neck diameterxof 0.06 meters, xaxrunner width
      ofx0.05 meters. The resultsxofxthe Kaplan turbine prototype test are able to produce axpowerxof
      3.64xwatts, a torquexofx0.231xNm, andxanxefficiencyxof 1.54%.
      PubDate: 2021-07-12
      DOI: 10.24843/SPEKTRUM.2021.v08.i02.p18
      Issue No: Vol. 8, No. 2 (2021)
       
 
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