bluuebunny/crossref_metadata_2025_split huggingface dataset:
PENGARUH PERUBAHAN PANJANG ALUR ROLLER TERHADAP DAYA DAN AKSELERASI PADA SEPEDA MOTOR MATIC 125 CC CBS ISS
Authors: Pangestu Wiyan Dwi , Nauri Imam Muda , Mindarta Erwin Komara 
Published: March 2022

Penelitian ini bertujuan untuk mengetahui apakah ada pengaruh dari perubahan panjang alur roller terhadap daya dan akselerasi pada sepeda motor Honda Vario 125 cc PGM-FI CBS ISS. Pendekatan penelitian yang digunakan dalam penelitian ini adalah pendekatan penelitian kuantitatif dengan desain quasi-experiment yang melibatkan variabel bebas dan variabel terikat. Berdasarkan hasil penelitian ini daya yang dihasilkan oleh primary pulley standard pada putaran rpm 8000 ialah sebesar 10,281 HP sedangkan dengan menggunakan primary pulley yang sudah di custom menghasilkan daya sebesar 10,905 HP. Sementara untuk akselerasi kendaraan yang dihasilkan ketika menggunakan primary pulley standard dari kecepatan 0-100 km/jam ditempuh dengan percepatan 2,05 m/ sedangkan untuk primary pulley custom dengan kecepatan yang sama ditempuh dengan percepatan 2,09 m/ . Dengan demikian perubahan panjang alur roller ini tidak menghasilkan perbedaan daya dan akselerasi yang signifikan.
PENGARUH TEMPERATUR AIR YANG DIDINGINKAN AC DAN TEMPERATUR AIR RADIATOR TERHADAP OUTPUT DAYA THERMOELECTRIC GENERATOR
Authors: Pranoto Asep , Nauri Imam Muda , Sumarli Sumarli 
Published: March 2022

Penelitian ini bertujuan untuk mengetahui pengaruh beda temperatur air yang didinginkan AC dan temperatur air radiator terhadap output daya thermoelectric generator. Penelitian ini menggunakan metode eksperimental pada 12 buah thermoelectric generator yang dirangkai seri, dipasang pada mesin Honda Jazz i-VTEC. Air radiator dengan temperatur 80-90 sebagai pemanas thermoelectric dan air yang didinginkan AC dengan temperatur 17-27 sebagai pendingin. Hasil penelitian didapatkan beda temperatur minimum 53 menghasilkan 0,0007 Ampere, 2,52 Volt dan 1,764 miliWatt. Kemudian dengan beda temperatur maksimum 73 menghasilkan 0,00246 Ampere, 4,35 Volt dan 10,701 miliWatt. Kesimpulan penelitian ini yaitu ada pengaruh beda temperatur terhadap output daya thermoelectric generator.
Analisis Kelongsoran Lereng Akibat Pengaruh Tekanan Air Pori di Saluran Induk Kalibawang Kulonprogo
Authors: Subiyanti Hesti , Rifa’i Ahmad , Jayadi Rachmad 
Published: March 2022

During rainy seasons, landslide occurs every year in Talang Bawong, Kalibawang Irrigation Channel thatcan damage houses, school building, bridge and the channel. Considering this fact, a numerical analysis by modeling the slope at the site was conducted. The objectives of this research were to identify the rain characteristic in the research site and to recognize its influence towards the change of water pressure in soil as well as the slope failure. The input data of this analysis were slope topography, physical and mechanical properties of soil applied. Groundwater flow in the slope model was numerically simulated by using SEEP/W software. Designed rainfall with appropriate return period was determined by analizing the maximum daily rainfall data with the aid of HAVARA software, while rainfall depth distribution was completed by applying frequency analysis. The historical daily rainfall data (1985 – 2004) were obtained from Kalibawang rain stasiun. Six rainfall models, as follow: initial condition (no rain) (model I), heavy rain in a short duration (model II), normal rain 25 mm and 40 mm in a long duration (model III), normal rain 20 mm in a long duration (model IV), heavy rain followed by normal rain 20 mm (model V), and normal rain 20 mm followed by heavy rain (model VI) Were analyzed. The output of the simulation was water pressure distribution data, which in turn being used as input data in analyzing slope stability using the SLOPE/W software. The result of the research showed that the highest rainfall with 2-year-return period was 114 mm while the dominant duration was 4 hours/day, and it was applied in the model II. The result showed that, a normal rain in a long duration is more severely influenced the change in water pressure than a heavy rain in a short duration. The safety factors are 1,444 for no rain condition, 1,418 for 114 mm rain for 4 hours, 1,208 for 25 mm and 40 mm rains, 0,982 for 20 mm rain, 1,397 for heavy rain followed by normal rain, and 1,402 for normal rain followed by heavy rain. In addition, a 20 mm normal rain on the 61st day resulted in the most severe influence on the slope failure.
Perbandingan Analisis Lendutan Pelat dengan Menggunakan Metode Beam on Elastic Foundation (BoEF) dan Finite Element Method (FEM)
Authors: Diana Willis 
Published: March 2022

The aim of this study was to compare deflection plates are supported by soil by using the method of Beam on Elastic Foundation (BoEF) and Finite Element Method (FEM). To validated the methods, used data from laboratory testing of the loading plate models. For the calculation of deflection plates on elastic (soil) foundation, the accuracy of determining the modulus of subgrade reaction will greatly affect the calculation of deflection plate. Deflection calculation used Finite Element Method and BoEF method gave deflections, where close enough to those of experimental result. Both methods can be used to estimate the plate deflection.
Optimasi Kadar Aspal pada Stabilisasi Tanah Pasir Menggunakan Aspal dengan Uji CBR
Authors: Ika Ernawati Willis Diana , Afriza Marianti , 
Published: March 2022

This research aims to determine the optimum bitumen content for sandy soil stabilization (sandy soil obtained from Glagah beach, Kulon Progo). Variation in bitumen content being used was 0% to 5% by weight of dry soil. Against, a mixture of bitumen and sandy soil proctor compaction tests was performed to obtain optimum moisture content (OMC) mixture which then was tested its California Bearing Ratio (CBR). The addition of bitumen content in soil stabilization with bitumen causing a continuing lack of OMC (Optimum Moisture Content) and increased MDD (Maximum Dry Density) on the compaction process. The maximum CBR value, 20%, was obtained at 2% bitumen content. . There was an increase of 150% CBR value when compared with the original soil without stabilization. CBR tends to decrease with further increase of the bitumen content up to 5% which may due to the mixture being more plastic.
Evaluasi Keandalan Fisik Bangunan Gedung (Studi Kasus di Wilayah Kabupaten Sleman)
Authors: Ibnu Herlambang Sujatmiko Mandiyo Priyo , 
Published: March 2022

Since 2002 has made rules about Bangunan Gedung (UUBG) that is UU no. 28 and in 2005 also made rules of realization that is Rule of Government No. 36 where the contain is a building should managed administration and also technical. This research is to find outlevel of reliability of buildings from architect aspects there are structure, utility, and fire protection, ability of access, and also building sand and environment in Sleman regency. Survey method (measuring, counting and filling in survey forms) was implemented to collect the primary data from the samples, and the secondary data being used were IMBs (building construction licenses), PBB (land and building tax) slips, etc. The data were analysed using descriptive statistic and scoring depends on the book entitled Panduan Teknis Tata Cara Pemeriksaan Keandalan Bangunan Gedung, 1998, Dept. PU, and Peraturan Permen PU No.29/PRT/M/2007, Permen PU No.26/PRT/M/2008. The criteria being used to determine the building reliability were Reliable for score of 95-100, Less Reliable for score of 75-95, Not Reliable for score of 75.The result shows that the building reliability of the Stikes being 96.51, the PMI being 94.20, the BBLK being 93.10, the RSUD being 93.36, and the Rukan being 87.68.
Perancangan Ulang Struktur Atas Jembatan Gajah Wong Yogyakarta dengan Menggunakan Box Girder
Authors: Lukmanul Hakim Sentot Hardwiyono , Bagus Soebandono , 
Published: March 2022

The Gajah Wong bridge to be studied is located in road section of Selokan Mataram, connecting Gejayan Street and Seturan area, Sleman, Daerah Istimewa Yogyakarta Province. This bridge was built in order to increase economic and to support traffic activities in this area. Gajah Wong bridge has 40 m span. The designing of this bridge used I girder, and then would be done redesigning another form of prestressed-concrete bridge which is box girder. This redesign method being used is Bridge Management System (BMS) 1992. Excel is used to analyze the structure. AutoCAD 2010 software was utilized for scetching the design. Girder designed using prestressed concrete structures with cross-sectional profile of a trapezoid -shaped box girder type . In designing the structure beam is used full - prestress post-tensioning with trapezoidal cross section box with 2.5 m high with 0,3 m floor-slab thickness. Prestressed-steel using 7 strands which is based on ASTM A-416 specification and used angkur 28 pieces of VSL type E-55.
Pemetaan Batimetri dan Analisis Pasang Surut untuk Menentukan Elevasi Lantai dan Panjang Dermaga 136 di Muara Sungai Mahakam, Sanga-Sanga, Kalimantan Timur
Authors: Purwanto Adiguna Rahmat Nugrahav, Siddhi Saputro, 
Published: March 2022

Mahakam River estuary water located in East Kalimantan is territorial water that often traversed by ships transporting coal and passengers. A dock is needed in order to support such transportation activities. Sanga-Sanga Unit of Pertamina was planning to rebuild the dock that has been existed since the 1980s in the waters of the Mahakam River estuary, thus bathymetry mapping and tidal behavior analysis are needed. Bathymetry mapping and tidal behavior analysis are two important parameters in determining the elevation of the dock floor. The purpose of this study is to obtain information on the bathymetry condition and the tidal behavior that will be used as reference of boundary conditions in determining floor elevation and dock length of the Mahakam River estuary water. Field data collection was conducted on 18 to 21 September 2012 in the water Mahakam River estuary, Sanga - Sanga, East Kalimantan. The method being used is a quantitative method, and analysis using statistical or model. Mahakam River estuary waters depth was found being between -1,3 to - 8,6 meters. It was mixed with tidal type with prominent double type, where MSL 82 cm to 260 cm interval tides, MLWL (- 28,60 cm), LLWL (- 90 cm) and HHWL (+167 cm). Dock floor elevation was obtained being +2.76 m with a value of Zo as a point of ± 0,00 m and + 2,04 with MSL as a point of ± 0,00 m, while the length of the dock is recommended to serve one boat with Loa 95,70 m is 114,84 m. With the water depth in front of the dock is needed to serve the largest ships draft is - 5 m in order to dock the ship safely.
Strategi Penawaran dalam Industri Konstruksi (Studi Kasus di Layanan Pengadaan Secara Elektronik, Kota Bandung)
Authors: Hakas Prayuda Mandiyo Priyo , 
Published: March 2022

The aims of this research are to calculate the value of mark-up using bidding strategy approach and to determine the best bidding strategy to win a tender with the optimum mark-up value and the optimum profit. The data being used in this research are auction data that have been completed in 2010-2012 at LPSE Bandung using statistical approach namely discrete multi distribution, normal multi distribution, and single normal distribution. Bidding strategy methods being used are Friedman Method, Gates Method, and Ackoff Sasieni Method. The Friedman Method can generate an optimum mark-up of 10% with expected profit of -0.0014, an optimum mark-up of -9% with expected profit of -0.0003, and an optimum mark-up of -1% with expected profit -0.0004 for discrete multi-distribution, multi-normal distribution, and single normal distribution, respectively. The Gates Methods can produce an optimum mark up of 6% with expected profit of 1,5000, an optimum mark up of 5% with expected profit 0.0097, and an optimum mark up of 6% with expected profit 1.2888 for discrete multi distribution, multi-normal distribution, and single normal distribution, respectively. While the Ackoff Sasieni Methods can generates an optimum mark-up of -2% with expected profit -0.0003, an optimum mark-up of 1% with expected profit for 0,0013 for discrete multi distribution, and for both multi and single normal distributions, respectively.
Analisis Lendutan Model Pelat Fleksibel dengan Tiang Perbesaran Ujung dan Pelat Tidak Rapat Tanah Pada Tanah Pasir
Authors: Hartono Edi 
Published: March 2022

Problems in sandy soil may occur when sand has low density, uniform gradation and thick deposit. Flexible plate foundation may used in this condition but plate deflection still high. To reduce deflection and to improve soil density, piles were used to support the plate. Installing piles made foundation system stiffer. The objectives of this study are to studies about behavior of plates and plate with pile on sandy soil. Plate deflection was observed with variation of plate thickness, bottom pile enlargement, and soil-plate-pile interaction (free standing pile and piled foundation). 1,2 x 1,2 x 1,2 m box container filled with sandy soil was used as soil media. Square and rectangular plexiglass plate were used to modelled plate. Steel pipe with 2,5 cm in diameter were used as pile model. The behavior of the plates were observed under loading (point load). The results shows that plate deflections were affected on plate thickness, bottom pile enlargement and soil-plate-pile interaction. For a ticker plate, contact surface between plate and soil was wider. For the 40 cm x 10 cm plates with base pile enlargement, deflections were found to reduced up to 21,26%. The ‘piled foundation’ on 40 cm x 10 cm plates, (installing with 20 cm pile length, and 10 cm spacing between pile), deflections were reduced 83,63% compared with free standing foundation.
Identifikasi Faktor Dominan Penyebab Kerentanan Bangunan Di Daerah Rawan Gempa, Provinsi Sumatera Barat
Authors: Zulfiar M Heri , Tamin Tamin , Pribadi Krishna S , Irwan Iswandi 
Published: March 2022

West Sumatra is one of the province in Indonesia owning high earthquake risk. Disaster data in last one decade show the existence of occurence of earthquake generating damage of building in gross. This matter indicate that building in West Sumatra susceptance of earthquake. One of the building susceptance is management of construction which disagree with needed conditions, law and regulation goodness which in rough, and also execution of imprecise development, imprecise build, either from planning facet and scheme, execution and observation, and also from exploiting facet and treatment. It can make infrastructure and building susceptance of disaster. When disaster happened, construction sector product becoming not function, it will generate disaster victim, or generate big loss, because destruction of other infrastructure or building. Research identify dominant factor is building susceptance represent the part of research of dissertation in the effort to less of building susceptance ( mitigation) to earthquake, by :1) sekunder data analysis of building effect of earthquake 2) perception of building characteristic and practices build 3) interview to some construction expert and earthquake. Research location in six sub-province / disaster gristle town that is; Padang city, Padang Panjang city, sub province of South Pesisir, sub province of Tanah Datar, sub province of Pariaman and west Pasaman. Research Object at building with floor lower and confined of un-confined masonry. To know potency cause of susceptance by triangulation and sintesis among the data, fact and opinion of expert. Result of research indicate that there are 23,6 % building residing in less condition or did not maintained. To be evaluated from building form, there are 11,1% less up to standard building hold up earthquake that is having regularity of vertical form and horizontal. Pursuant to characteristic usage of brick wall with building structure there are 40,8 % having structure system susceptance of earthquake that is using inappropriate practical log and column.
Pembuatan Alat Uji untuk Mengikat Partikel Logam yang Terkandung dalam Pelumas Akibat Gesekan Mesin
Authors: Sukamta Sukamta , Sudarja Sudarja , Nurdarojat Nurdarojat , Prasetyo Agung 
Published: March 2022

One of the factors that can affect to the quality of lubricantion is metal particle content due to friction of engine parts. Metal particle in lubricanting oil could damage the engine parts, so it is neccessary to reduce the metal particle content which mingled in lubricant oil. The experiment was conducted in laboratory scale using power magnetic type ring neodymium possessing diameter of 19 mm and thickness of 2 mm. The experiment was conducted by flowing the lubricanting oil containing metal particle continually and put the magnets in engine so that the metal particle will be taken up by the magnets. The experiment used three variations of time (5, 10 and 15 minutes) and three variations of valve to controlling the flow rate using. The highest absortion of metal particle was reached on opening valve 30 for 15 minutes. When volume the flow rate was 200 ml/s and the time was 15 minutes the result of absortion was 7.48 % (magnet A), meanwhile for volume the flow rate 180 ml/s and the time was 15 minutes resulted in particle absortion of about 7.37 % (magnet B). When Magnet A and B used together and at the same flow rate and time, i.e. 180 ml/s time 15 minutes, resulted the particle absortion about 17.98 %.
Analisis Unjuk Kerja Boiler Feed Pump Turbine Untuk Kapasitas Ketel Uap 2000 Ton/Jam Di PLTU Cirebon Jawa Barat
Authors: Sukamta Sukamta , Sudarja Sudarja , Wathon Muhammad Mujaddid Ighna 
Published: March 2022

Boiler feed pump turbine (BFPT) has an important role in the circulating of demin water from deaerator to the separator of steam power plant operations (PLTU) in Cirebon. Flow rate, temperature and pressure were important parameters in boiler feed pump process. Based on the BFPT function, it was necessary to do the analysis interpretation of the performance BFPT. Data needed for evaluation include pressure and temperature on the suction, pressure and temperature on the discharge, and flow capacity. In this study, the data were taken starting in January to December 2014. Data processing was performed using a centrifugal pump calculations, presented in tables and graphs using MS Excel. Analysis of data using qualitative interpretation of quantitative data. BFPT efficiency during operations in 2014 decreased in February - March amounted to 17.91% (BFPT A) and 18.04% (BFPT B). BFPT A highest efficiency obtained in January amounted to 73.76%, the lowest in March amounted to 55.45%. The highest efficiency BFPT B in February amounted to 72.94%, the lowest in March amounted to 54.9%. Change of Performance BFPT occur due to changes load generator power plant that led to the pressure change and flow capacity. Other factors that degrade the performance because BFPT was operated continuously for 24 hours and the age of BFPT sufficient old cause decrease in pump performance.
Penerapan Metode K-Means Untuk Clustering Mahasiswa Berdasarkan Nilai Akademik Dengan Weka Interface Studi Kasus Pada Jurusan Teknik Informatika UMM Magelang
Authors: Asroni Asroni , Adrian Ronald 
Published: March 2022

The selection process among outstanding students in a department has a big problem. This process is not fair because only involve one criteria and ignore the other criteria. We need the best student to participate in a competition held by the Indonesia Security Incident Response Team on Internet Infrastructure (ID SIRTII) of the Ministry of Communication and Information. This process uses Weka software to calculate the best student. It provides the various method to explore the data. One of them is clustering method. There are many algorithms in clustering method. In this research, we will investigate widely about one of that algorithms. Its name is K-Means. This algorithm (K-Means) will give the recommendations about the best student based on the cluster. It will represent the many clusters of a student group. The best cluster can be calculated more to get the names of the best students group. They are eligible to enter the competition. K-means involve the GPA (Grade Point Average) and related course to support the academic skill in order to get the best student. This research helps the teacher select the best student to enter the competition. Many similar cases can use this algorithm in order to get the best student.
Tranduser Ultrasonik Sebagai Pendeteksi Gerak Pada Sistem Keamanan Rumah
Authors: Qodir Fathul , Putra Juniardi A 
Published: March 2022

Ruangan yang penuh barang-barang berharga memerlukan sistem keamanan elektronis yang bisa langsung dipantau.Transduser ultrasonik dapat menjadi alternatif solusi untuk mengamankan suatu ruangan yang butuh pengawasan secara otomatis. Transduser bisa dilengkapi buzzer atau sirane yang berbunyi sebagai alarm atau terkoneksi dengan telepon rumah, sehingga akan men-dial up telepon rumah jika ada seseorang yang tanpa ijin memasuki ruangan tersebut. Jadi, selama didalam ruangan tersebut tidak ada benda yang bergerak maka alarm tidak akan berfungsi. Hasilnya berupa jangkauan sistem yang dipengaruhi sudut antara pemancar dan penerima pada jarak pancar 1 sampai 9 meter, relai pada rangkaian penerima akan aktif (on) mulai sudut 800 keatas, sedangkan mulai dari jarak pancar 10 sampai 15 meter, sudut pengaktifan relai berkurang 100 setiap penambahan jarak pancar 1 meter, misalnya pada jarak pancar 10 meter sudut pengaktifan relainya mulai sudut 700 keatas, sedangkan pada jarak pancar 11 meter sudut pengaktifan relainya mulai sudut 600 keatas begitu seterusnya sampai dengan jarak pancar 15 meter
Analisis Tingkat Kesuksesan Inspeksi Pada Attach Dan Packet Data Protocol (PDP) Context Layanan Gprs Dengan Metode Statistical Process Control
Authors: Ikhsan Muhammad , Nurudin Ahmad 
Published: March 2022

Penelitian ini dimaksud untuk mengetahui tingkat kesuksesan inspeksi yang dilakukan pada Attach dan PDP Context, sebab keberhasilan melakukan aktivasi awal GPRS dilihat dari kesuksesan MS melakukan Attach, untuk selanjutnya dapat diambil langkah perbaikan jika terjadi penurunan kualitas (non performance). . Metode yang dipakai adalah metode SPC (statistical process control) atau metode pengendalian kualitas suatu proses, untuk menunjukan apakah jumlah yang menunggu untuk dilayani dalam server GSN (GPRS Support Node) masih dalam proporsi pengendalian.Hasilnya adalah hasil dari pengendalian proses kualitas proses statistik untuk GGSN dan SGSN Ericsson menunjukan bahwa masih terdapat proses yang berada diluar batas pengendalian. Sedangkan, hasil dari analisa kemampuan proses menunjukan bahwa untuk proses Attemp PDP Context dapat memenuhi spesifikasi bawah, sedangkan untuk proses Attemp Attach masih dapat memenuhi batas spesifikasi bawah.