388 research outputs found
hibagus/TwoLevelBPSimulator: First Release
No full textThis is the first production-ready release version 1.0
Low-Level Test of the New Read-Out-Driver (ROD) Module and Back-of-Crate (BOC) Module for ATLAS IBL Data Acquisition System Upgrade
No full textDuring first long shutdown of The Large Hadron Collider, most of experiment infrastructures at CERN will be upgraded for preparation to operate at higher energy thus can open new possibilities to discover the unknown in particle physics. ATLAS, which is the biggest particle detector at CERN, will also be upgraded by constructing new pixel sensor layer. This new pixel sensor layer is called ATLAS Insertable B-Layer (IBL). IBL will be installed between the existing pixel sensor and new, smaller radius beam pipe. The installation of IBL will introduce new level of radiation and pixel occupancy. Therefore, it requires development of new technologies to supports the ATLAS IBL upgrade and also improve the physics performance of the existing pixel sensor. One of the important key technologies that must be upgraded is data acquisition system. The development of new front-end ASIC, the FE-I4, to answer the challenge in data acquisition system will require new off-detector electronics. The new off-detector electronics was implemented by using two VME-based boards, the Back-of-Crate (BOC) modules which handles optical input-output functionality and the Read-Out-Driver (ROD) modules which handles data processing. By the beginning of 2014 summer, the new ROD and BOC modules will mark new milestone in production process. Both of them will undergo series of stress tests to make sure its functionality and reliability. Therefore, the systematic and comprehensive low-level tests method must be developed to test the ROD, BOC, and anything in between in an efficient and effective way. By analyzing the result of this low-level tests, improvement and revision to ROD and BOC modules both in hardware level and in firmware level can be made. Moreover, the development of current test method promises the possibilities for the future test system integration by which the end-user can test the ROD and BOC functionality without any hassle
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GPU-accelerated high-performance computing for architecture-aware wave simulation based on discontinuous Galerkin algorithms
Get PDFFull-waveform inversion has been an essential method for oil and gas industries to approximate the properties of the Earth’s surface without the need to see them directly by digging, drilling, or tunneling, and thus lowering exploration costs. This method relies on the use of generated seismic waves and the acquisition of the reflected wave data. Since each type of rocks, sediments, and materials have different properties, the acquired data can be used to approximate the location of mineral and oil repository, for example. The first problem, which is the focus of this research, is called the forward problem, which aims to generate synthetic seismograms based on the given model. The second problem is the inverse problem, which tries to find the optimum model that can best describe the obtained data. Generally, the area of the seismic survey is massive and can easily generate a vast amount of data, which is used to find the best Earth model. Therefore, a considerable amount of computing power is required to help in solving these problems. Industrial-scale wave simulators typically use multiple CPUs to accelerate computation. As the size of the problem increases, the time needed to run the simulation will increase accordingly. In this thesis, we investigated the implementation of a CPU-based wave simulator to find available parallelism that can be extracted. We mapped the massive number of parallelism to GPU which has thousands of cores, and thus suitable for doing this job. We performed additional optimization of the basic code to improve the performance. We also developed a method to verify the functionality of our implementation against the original code. The GPU-accelerated version of the code is then compared to the original CPU code. We run the simulation for different levels of discretization both in consumer-class GPU and datacenter-class GPU. For the double-precision run, our benchmark results show the speed-up over 120x, 210x, and 330x in GeForce GTX 1080Ti, Tesla P100, and Tesla V100 GPU, respectively, compared to the dual Intel Xeon Platinum 8160 CPUs with a total of 48 coresElectrical and Computer Engineerin
PENGAKUAN PENDAPATAN ATAS LAYANAN REKRUTMEN PADA ITS CAREER CENTER
Get PDFIn this study, the author has a purpose to know the recognition of income in the company and compared with the theory. To obtain the necessary data, the authors
conduct research at ITS Career Center located at the campus of Sepuluh Nopember Institute of Technology (ITS) Surabaya. The type of research used is descriptive. This research explains how earnings recognition is recorded and recognized by ITS Career Center. The data required in this research is through interview, observation and documentation. The place of study is the ITS Career
Center one of the units in ITS that deals directly with the world of work through service cooperation in terms of meeting the needs of employment that initially run the function of a career center to facilitate efforts to increase the employability of ITS graduates. The conclusion that can be drawn from this problem is that the revenue recognition used has been in accordance with the theory. The conclusion that can be drawn from this problem is the method of recognition used is the cash
basis
PENGARUH SARANA BANTU NAVIGASI DAN FASILITAS PELABUHAN TERHADAP KESELAMATAN PELAYARAN DI PPN PEKALONGAN
Get PDFBagus Prayogo, 2017, NIT: 49124377.N, “The Influence of Navigation Mark
And Port Facilities to The Safety Sailing in PPN Pekalongan”, Nautical
Department, Diploma IV Program, Merchant Marine Polytechnic of
Semarang, 1st Supervisor: Dr.Capt.SUWIYADI,S.Pd.M.Mar.M.Pd., 2nd
Supervisor: YUSTINA SAPAN,S.ST.,M.M.
Safety sailing can be perform of safety vehicle in a water, safety harbour and
safety marine environment. The due to influenceof navigation mark and harbour
facilities . all of activities when its start prom preparation vehicle, during in the
water and after back to the harbour. The main goal is safety.
In this research author look at begining data or called prereseacrh, that is no
one acciddent (zero accident), author curious that is from the goodness of
navigation mark and harbour facilities or another factor.
In thats problem formula author try to verify and make answer off reseach
problem with the point of research title “The Influence of Navigation Mark And
Port Facilities to The Safety Sailing in PPN Pekalongan”.
The object of reseach located in Pelabuhan Perikanan Nusantara (PPN)
Pekalongan and take time of research from October 2016 until January 2017. In
preparing the research, test data, process the data, discuss the result of research to
draw conclusions and sugesstions, the author used mixed methods. With this
method of research data are expected in the form of preception or descriptive and
measurable data can be exsplained so will that the degree of validity of the
reseacrh can be achived with good.
In research problem author get looking deeply for navigation marks and
harbour facilities by get in some one data. For this activities author use mix
methode to the research which getting 40,4% regresion weigh for influence or
navigation mark to the safety sailing, 20,7% harbour facilities to the safety sailing,
and both of them 43,0% to the safety sailing by triangulation method. Author
belive degree of trush te result this research.
Key word: safety sailing, navigation mark, port facilities mix method
He Procedure Of Transposition In Some Nouns Of Surah Ar-Rahman Published By Al-Huda And Cipta Bagus Segara
No full textThe Study in this paper discusses about the translation procedure of transposition in some nouns of Surah Ar-Rahman published by Al-Huda and Cipta Bagus Segara. The important purpose in this research, the author tries to explain the translation procedure used in translating some nouns of Surah Ar-Rahman published by AlHuda and Cipta Bagus Segara. The writer uses descriptive qualitative method, to describe and analyze identifies the process of how an Arabic word of the verse in Qur?an is translated into English Language. To support the analysis, the writer uses some books and dictionary, namely A Text book of Translation (Peter Newmark), Teori & Praktek Penerjemahan (Frans Sayogie), Kamus Lengkap Arab Indonesia (Ahmad Warson Munawwir). Furthermore it found twelve words of translation procedure from some nouns of Surah Ar-Rahman published by Al-Huda and Cipta Bagus Segara namely : six words from noun to noun, five words from noun to noun phrase and one word from noun to adjective phrase. The translation procedure is Transposition. From the procedure, the translation of some nouns, resulted the meaning that have been translated still have an equivalence with the source language (SL)
ANALISA BREAK EVEN POINT (BEP) PADA TOKO ROTI BAGUS KUNING PLAJU
Get PDFThe title of this final report is Analysis of Break Even Point (BEP) at Bakery on Bagus Kuning Plaju. The purpose of this report is to know the minimum sales volume calculation in unit and rupiah as a target by using break even point multiproduct formula. This data is collected through interviews and library research. The writer also wanted to know the product calculation in unit and rupiah to get break even point until make target planning in 2018. The result shows that in 2015 until 2017, Bagus Kuning Plaju Bakery had increased their break even point for their product. Based on their profit planning, the company must be able to sell Rp 152.762.678 of 12.730 pieces of white bread and Rp 1.750.689.562 of 875.345 pieces of sweet bread. Based on the finding, the author suggests that company should use break even point calculation method as a media to make their profit planning, so they will know their sales volume to get profit as well
Assessment of aerodynamic roughness parameters of turbulent boundary layers over barnacle-covered surfaces
No full textFull-scale drag penalty predictions of flows over rough walls require surface roughness characterisation from laboratory experiments or numerical simulations. In either approach, it is necessary to determine the so-called equivalent sand-grain roughness height (ks ). There are several steps involved in determining this aerodynamic roughness lengthscale, but its procedure typically includes a combination of measurement of wall-shear stress (τw ) using direct or indirect methods as well as analysis of velocity profiles. Indirect methods usually rely on assumptions made about flow and its scaling including the validity of universal outer-layer similarity. However, the implications of the underlying assumptions involved in full-scale drag prediction are unclear. In this work, we carry out wind tunnel measurements over a realistic rough surface (from a fouled ship-hull) to evaluate the impact of different methods with an emphasis on using the outer-layer similarity hypothesis for full-scale drag predictions. Wall-shear stress is measured using an in-house floating-element drag balance (DB), and velocity profiles are obtained using particle image velocimetry (PIV), allowing the evaluation of ks , and the associated wake parameters through several methods. The aerodynamic roughness parameters hence obtained are used for full-scale drag penalty calculations. It is observed that the predicted drag penalty can vary by over 15 % among the different methods highlighting the care that should be taken when employing such methods.Fluid Mechanic
ANALISIS PENYEBAB TERJADINYA KERETAKAN PADA CYLINDER LINER MAIN ENGINE DI MT. MENGGALA
Get PDFOngki Bagus Sadewa, 2018, 50135035. T, "Analysis of Cause Occurrence of Cylinder Liner Main Engine In MT. Menggala ", Thesis Teknika Study Program, Diploma IV Program,Semarang Merchant Marine Polytechnic ,Supervisor I: Dwi Prasetyo, M.M, M.M..E, and Supervisor II: Poernomo Dwi Atmojo, MH
A diesel engine is an internal combustion engine in which air is compressed to a sufficiently high temperature to ignite diesel fuel injected into the cylinder. Cylindrical liner is part of diesel engine that serves as a place of combustion process that produces power / effort with high air and temperature utilization simultaneously with spraying of fuel. The breaking of the cylinder liner of the main engine may affect the operation of the diesel engine
Research method that writer use in preparation of this thesis is descriptive qualitaf research method. In this case the author uses the SWOT method as a data analysis technique to analyze what factors cause cracks in the cylinder liner main engine and what efforts are made to overcome these factors by identifying strengths (strenghts), weaknesses ( weaknesses), opportunities (opportunities), and threats (threats) from the environment systematically to formulate the strategy to be taken.
Based on the results of research that has been done the author, it can be concluded that the cracking cylinder liner caused by two factors, namely 1) Cooling is not good. less optimal water cooling pump, leakage of the cooling system and damage by pass valve / thermostat, 2) The quality of spare parts is not standard. To overcome these factors that can be done is, repair of damaged machine parts, replacement, maintenance, and the selection of spare parts that fit the standards.
Keywords: Cylinder liner, SWOT, Rif
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