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INDONESIA
Faktor Exacta
Published by Universitas Indraprasta PGRI
ISSN : 1979276X     EISSN : 2502339X     DOI : -
Core Subject : Science, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering
Faktor Exacta is a peer review journal in the field of informatics. This journal was published in March (March, June, September, December) by Institute for Research and Community Service, University of Indraprasta PGRI, Indonesia. All newspapers will be read blind. Accepted papers will be available online (free access) and print version.
Arjuna Subject : -
Articles 523 Documents
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Pengaruh Penyinaran Terhadap Pertumbuhan Kacang Hijau made gita somianingsih
Faktor Exacta Vol 11, No 3 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (659.054 KB) | DOI: 10.30998/faktorexacta.v11i3.2788

Abstract

Research has been done with the title the effect of irradiation electromagnetic wave on the growth of green beans. This research has been done by taking data in the form of the height of green beans stems. The method used in this study is direct observation of the growth of green beans stems. The irradiation of the growth of green beans stems is divided into three types, with sunlight, mobile flashlight, and without irradiation. The results of the study showed that the growth of green beans stems irradiated by mobile flashlights was higher than the growth of green beans stems irradiated by sunlight. However, the green beans stems irradiated by the mobile flashlight are paler and easily shaky compared with the green beans that are irradiated by sunlight which looks fresher and sturdier. On the other hand, green beans that are not given irradiated, only grow a little buds and do not grow.Keywords: Vigna radiata, electromagnetic wave, sunlight, and mobile phone flashlight
Perancangan Aplikasi Pengendali Listrik Berbasis Web Menggunakan Mikrokontroler At89251 aan risdiana
Faktor Exacta Vol 11, No 3 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (825.862 KB) | DOI: 10.30998/faktorexacta.v11i3.2774

Abstract

Sistem berbasis web menggunakan mikrokontroler AT89s51 adalah sebuah rangkaian elektronika yang disupport dengan aplikasi teknologi informatika karena menggunakan beberapa aplikasi komputer untuk menjalankannya. Permasalahan yang terjadi disebabkan tarif listrik yang semakin tahun semakin meningkat dan kurang telitinya pemakai listrik dalam pemanfaatan listrik, maka dibuat sebuah sistem yang dapat memonitor sekaligus mengendalikan arus listrik secara jarak jauh dengan memanfaatkan jaringan internet menggunakan website, dan mengurangi dampak negatif dari kecerobohan manusia. Hasil penerapan aplikasi website sebagai media utama pada uji coba sistem dalam proses pengiriman data berfungsi dengan baik dan membantu user dalam mengontrol serta mengendalikan arus listrik tanpa harus berada dirumah.
Algoritma Klasifikasi Data Mining Untuk Memprediksi Siswa Dalam Memperoleh Bantuan Dana Pendidikan Senna Hendrian
Faktor Exacta Vol 11, No 3 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.253 KB) | DOI: 10.30998/faktorexacta.v11i3.2777

Abstract

Education is one of the components of life that can support the success of a person towards life that much better again. Especially for the children that are in the scope of the age of compulsory education. but not all children can attend compulsory education, because several factors cause, one of which is the issue of tuition fees. To cope with the existing problems, then a standalone compiled Bina Bangsa School programs Help Fund education for students who are considered less capable in economic strata. In this study, the author uses the classification Algorithm Datamining Algorithm C4.5 to predict students in obtaining the help of the EducationFund. Sample data are drawn from the Upper secondary school (HIGH SCHOOL) Selfsustaining Bina Bangsa (BBM) that located in Kecamatan Gunungputri Kab. Bogor. From the results of testing and Validation of tests used Cros Confusion Matrix and ROC Curves. The results obtained for the value of Accuracy Algorithm C 4.5 is 98.80%, a value for the Precision of 98.02%, and the value for Sensitivity or Recall of 99.00%. Thus the algorithm C 4.5 is the best techniques and algorithms to predict Students in obtaining the help of the Education Fund. Keywords : data mining, algorithms of classification, algorithm C 4.5, the education fund
Sistem Transparansi Dana Desa Di Kabupaten Kudus Menggunakan Metode Algorithma Information Retrieval System Pratomo Setiaji
Faktor Exacta Vol 11, No 3 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (816.044 KB) | DOI: 10.30998/faktorexacta.v11i3.2785

Abstract

Kudus is a district in the province of Central Java. The capital of this district is the City of Kudus, located on the northeast coastline of Central Java between the City of Semarang and the City of Surabaya. The city is about 51 kilometers from the east side of the city of Semarang, Kudus gets a large village fund allocation, the allocation of funds transferred to the village government to support village development in 2017 reached Rp 219.89 billion. The urgency of this study is based on the problems that arise in its use based on the survey including Error mechanism, Not according to plan or unclear allocation, Not according to Guidelines, Guidelines, technical guidelines (especially procurement of goods and services), Administration of financial statements: (Markup and markdown, double counting), Reduction of Village Fund allocations, for example, village funds are used as assets of village heads and tools for personal gain, cannot be held accountable for their use, asset misappropriation: Sale or swap of Kas Desa Village, Rental of Village Cash Land which is not his right. All these problems can be anticipated by presenting good and transparent information with the information system for using village funds (SIMDANDES), the approach method used is a waterfall, for this reason, a Transparency Information System for village fund use (SIMDANDES) is needed for village fund management Gondangmanis Kec. Kab. Kab. Kab. With the Algorithm Information Retrieval System, System (SIMDANDES) method was applied to monitor the use of village funds and their absorption carried out in each village in real time, as well as information for village heads and stakeholders in Kudus District to establish a policy.Keywords: information system, village fund, algorithma information retrieval system
Delineasi Zona Prospek Sistem Panasbumi Daerah ‘P’ Menggunakan Pemodelan Multi Dimensi Data Magnetotelurik Terintegrasi Data Geologi dan Geokimia Puji Suharmanto; Yunus Daud; ahmad zarkasyi
Faktor Exacta Vol 11, No 3 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1276.116 KB) | DOI: 10.30998/faktorexacta.v11i3.2714

Abstract

A study for delineating geothermal system of prospect area “P” has been done by using multi-dimensional modeling of magnetotelluric data. Physiographycally, geothermal prospect of “P” area is located at non-volcanic Banda inner arc hosted by Malihan Sekis rock complex with Perm-Trias age. The existance of geothermal system in this area is indicated by the presence of thermal manifestations in form of 6 chloride-bicarbonate hot springs with temperature in the the range of 37-67oC, and pH of 6-7. The development of geothermal system is most probably associated with strong tectonic activity caused by the collision between Seram island plate and Australian plate that ignite the occurence of intrussive body as heat source. In order to know the subsurface information of prospect area, magnetotelluric (MT) survey has been done. The processing of MT data was started from time-series data, continued by noise filtering, rotation of strike orientation and static shift correction to obtain better MT curve. The data were then being inversed by means of 1-Dimensional, 2-Dimensional and 3-Dimensional inversion methods. Reservoir temperature is estimated to be around 160-180 oC and classified as moderate temperature. The result of MT data inversions shows the presence of conductive layer (<15 ?m) with 500-1000 m thickness that is interpreted as clay cap og geothermal system. High resistivity zone (>300 ?m) with updome shape appears underneath the manifestations occurence (MAP1, MAP2, MAP4, and MAP5), indicating that the heat source is located in northern part and elongate to souteast direction. The conceptual model of geothermal system was built based on integrated interpretation of geological, geochemical and geophysical data. The prospect area and recommendation of drilling location is estimated to be ± 3 km2 around upflow zone.Keywords: Prospect zone, geothermal system, magnetotelluric method, multi-dimension modeling
Perbandingan Kinerja Metode Barisan Fibonacci dan Regula False dalam Penentuan Perbandingan Emas Endaryono Endaryono
Faktor Exacta Vol 11, No 4 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v11i4.2841

Abstract

Bnyak cara untuk menentukan perbandingan emas (golden ratio) yang bernilai di sekitar 1,618. Tulisan ini bertujuan melakukan perbandingan kinerja dalam jumlah iterasi dan waktu running antara metode barisan Fibonacci dan metode posisi palsu (regulase false) fungsi persamaan kuadrat dalam menentukan nilai perbandingan tersebut. Penelitian dilakukan dengan eksperimen melalui simulasi program matlab versi 7.1. Pada simulasi didapatkan bahwa metode barisan Fibonacci pada nilai error 1x10-16‚ nilai perbandingan emas sebesar 1,61803398874989 didapat pada iterasi ke-39 dengan waktu running 0.00067885722906. Sedangkan pada metode regula false fungsi persamaan kuadrat didapat pada iterasi ke-21 dengan waktu running 0.00049671117419. Hasil ini menunjukkan bahwa penggunaan metode numerik regula false fungsi persamaan kuadrat memberikan kinerja yang lebih baik dibanding dengan metode barisan Fibonacci dalam menentukan nilai perbandingan emas
Implementasi Algoritma AES dan Algoritma XOR pada Aplikasi Enkripsi dan Dekripsi Teks Berbasis Android Resti Amalia; perani rosyani
Faktor Exacta Vol 11, No 4 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (842.183 KB) | DOI: 10.30998/faktorexacta.v11i4.2878

Abstract

Kriptografi banyak digunakan untuk menjaga aspek keamanan informasi. Pada penelitian ini penulis mengkombinasikan dua kriptografi modern dengan tujuan untuk memperkuat keamanan pengiriman pesan. Untuk kriptografi modern pertama, penulis memilih algoritma XOR dikarenakan mudah diimplementasikan dan tidak sulit secara komputasional. Untuk kriptografi modern kedua, penulis memilih algoritma AES dikarenakan proses algoritma ini cepat dan juga kuat. Proses pengamanan pesan diawali dengan proses enkripsi plainteks menggunakan algoritma XOR untuk menghasilkan cipherteks pertama. Selanjutnya cipherteks dienkripsi lagi dengan algoritma AES sehingga menghasilka cipherteks akhir. Sedangkan untuk proses dekripsi, tahap awal cipherteks didekripsi dengan algoritma AES untuk mendapatkan cipherteks. Kemudian cipherteks didekripsi lagi dengan algoritma XOR untuk menghasilkan plainteks kembali. Hasil dari penelitian ini menunjukkan bahwa pengiriman pesan berjalan 100%  antaran plaintext ke chipertext dan kembali lagi ke plaintext  dengan selisih waktu enkripsi dan dekripsi yaitu 0,13 dan 0,9 detik.
Analisis dan Perancangan E-Commerce Business to Consumer (B2c) dengan Menggunakan Metode Square Fiqih Ismawan; Abdul Mufti; Bondan Dwi Hatmoko
Faktor Exacta Vol 11, No 4 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (747.853 KB) | DOI: 10.30998/faktorexacta.v11i4.3145

Abstract

Sesuai dengan perkembangan teknologi informasi yang sangat pesat yang membuat semua orang ketergantungan dengan teknologi informasi yang dapat mendukung semua aspek kehidupan dalam menunjang kinerja operasional dan memberikan keuntungan yang sangat baik bagi penggunanya. Selain itu penggunaan teknologi informasi juga dapat memberikan kekuatan terhadap persaingan bisnis bagi perusahaan. Teknologi informasi yang sedang banyak digunakan yaitu sistem aplikasi berbasis website dan sistem aplikasi mobile phone. Hadirnya teknologi e-commerce membuat prosedur berdagang atau mekanisme jual-beli di internet semakin mudah dan praktis, dimana pembeli dan penjual dipertemukan di dunia maya dengan terhubung jaringan internet satu sama lainnya.  Dengan banyaknya pilihan sistem aplikasi e-commerce berbasis website dan sistem aplikasi mobile phone yang dapat digunakan dalam prosedur berdagang atau mekanisme jual-beli maka perlu diperhatikan bagaimana mekanisme keamanan data pembeli dan proses transaksi dapat dilakukan dalam satu sistem e-commerce. Permasalahan kemananan data costumer dan data transaksi sangatlah riskan serta berdampak luas terhadap  keamanan sistem aplikasi yang di rancang.  Penelitian ini diharapkan dapat membantu organisasi atau lembaga menjamin keamanan dan keberlangsungan sistem dan aplikasi khususnya sistem aplikasi e-commerce. Penelitian ini di bangun oleh metode System Quality Engineering Requirement (SQUARE) dalam menganalisis dan perancangan sistem aplikasi e-commerce Business to Costumer (B2C). Hasil dari penelitian ini berupa rancangan prototipe aplikasi e-commerce sesuai dengan proses analisis metode System Quality Engineering Requirement (SQUARE).
Analisis PGA (Peak Ground Acceleration) Berdasarkan Data Gempa untuk Wilayah Jakarta Timur Menggunakan Software PSHA Siti Ayu Kumala; Didik Nur Huda; Muhamad Candra Irawan
Faktor Exacta Vol 11, No 4 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.433 KB) | DOI: 10.30998/faktorexacta.v11i4.2974

Abstract

The purpose of this research was to produce a contour map of ground motion acceleration (hazard map) for exceeded probability of 10% as an effort to mitigate earthquake tectonics in East Jakarta. This study uses the applied theoretical research method approach using PSHA software. The data used comes from data released from BMKG and the Geological Agency. Based on the map of the acceleration of soil movement (hazard map) in East Jakarta resulting from the PSHA process, for a return period of 500 years (10% PE 50 years) the PGA value generated is 0,03 g - 0, 15 g. East Jakarta is a fairly stable region with a low level of earthquake hazard. Increasingly to the south and southwest, the PGA value is increasing due to close to subduction and volcanic activity. The PGA value in this study is almost the same as the revision of the Indonesian SNI earthquake map 03-1726-02 in 2010.
Penentuan Rute Mobil Pengangkut Sepeda dalam Proses Rebalancing sebagai Vehicle Routing Problem Mirani Oktavia
Faktor Exacta Vol 11, No 4 (2018)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (745.576 KB) | DOI: 10.30998/faktorexacta.v11i4.2977

Abstract

The use of bicycles facilitated by a college can be seen as one of the interesting phenomena because the campus is required to always ensure that the number of bicycles in each bicycle storage area (shelter) must return to normal when the beginning of the lecture starts every day. While the existence of the mobility process carried out by all stakeholders of the campus is very possible to occur the increation of bicycles in a shelter which also resulted in the reduction of bicycles in other shelters. Therefore, a method is needed to return the number of bicycles like the early morning according to the capacity of each shelter using the car that is transporting which is then called the rebalancing process of bicycle. In this study a model of the operational of the car carrier was designed during the rebalancing process. Therefore, information is needed on which shelter routes to visit and how many bicycles are moved from one shelter to another. This distribution problem is categorized as one form of vehicle routing problem (VRP) to minimize mileage of the car that is transporting of bikes.

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