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"Engineering design calculations for tank bottom sections, including direct current requirements and voltage calculations, followed by additional structures, such as electrical grounding systems, have already been successfully implemented and controlled in field conditions. Furthermore, the effect of soil resistivity in layers, oxygen content and the pH value of the soil against the disproportionate IR-Drop voltage, including its effect on potential distribution, have been already successfully observed. Other influences, such as the depth and location of the anode groundbed determination along with the establishment of impressed current cathodic protection related to the main tools and equipment, such as external corrosion control methods, have been defined as the most effective ways in order to control potential distribution against the additional structures. Persuant to the verification results from the site located at Marangkayu, East Borneo, it has been determined that high soil resistivity could cause error readings in accordance with the accumulation results of the true readings and the IR-Drop voltage, since under real conditions, the tank structure would have received less current flow from an anode compared to a lower result. Naturally, a low pH value from the soil would decrease soil resistivity and enhance potential distribution from the anodes to the tank structures. The results show that the cathodic protection required 10 additional anodes, (each one is of a tubular mixed metal oxide) with a DC supply at minimum amperage of 154 Amps and a minimum voltage supply of 32 Volts. During the research, it was identified that high soil resistivity above 3000 ohm-cm would cause error readings. Naturally, acidic soil is in the region of pH 5-7 value, which would decrease soil resistivity and enhance the potential distribution from the anode to the tank structure."

"Penentuan desain sistem Impressed Current Cathodic Protection di bagian dasar tanki T-1301 A/B/C/D dan AB Rerun Tank di PT XX Kalimantan Timur yang meliputi proses perhitungan kebutuhan arus dan jumlah tegangan DC keseluruhan sistem struktur serta pengaruh penambahan struktur lain yang meliputi electrical grounding system telah berhasil dilakukan dan secara efektif telah dikontrol di lapangan. Selain proses desain engineering, variasi lapisan tahanan tanah terhadap ketidakseimbangan IR Drop pada sistem Impressed Current Cathodic Protection di bagian dasar tanki T-1301 A/B/C/D dan AB Rerun Tank di PT XX Kalimantan Timur dan pengaruhnya terhadap distribusi potensial telah dipelajari.Dari hasil pembuktian di lapangan menunjukkan bahwa dibutuhkan 10 anoda tambahan dengan total kebutuhan arus DC 154 Ampere dan kebutuhan tegangan DC 32 Volt , selain itu tahanan tanah yang tinggi diatas 3000 ohm cm akan menyebabkan pembacaan error yang tinggi.pH tanah yang rendah berkisar 5-7 akan mengurangi tahanan tanah, dan meningkatkan distribusi arus proteksi katodik.

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Engineering design calculation for bottom section of T-1301 A/B/C/D dan AB Rerun Tank at PT XX Santan Terminal including current requirement and DC voltage calculation followed by additional structure such electrical grounding system has been already successfully implemented and controlled at field. Furthermore, effect of soil layer resistivity and pH of soil against disproportion of IR Drop voltage including its effect to potential distribution has been already successfully observed. Another influences such depth and location of anode groundbed determination along with establishment of impressed current cathodic protection main tools and equipments as external corrosion control method has been defined as the most effective way for controlling potential distribution against structure.

As per verification results from site, the results showed that the cathodic protection required 10 additional anode (MMO), with minimum amperage DC supply is 154 A, minimum voltage supplied is 32 Volt, it has been identified that high soil resistivity above 3000 ohm.cm would cause error reading. Naturally, acid soil in about pH 5-7, would decrease soil resistivity and enhanced potential distribution from anode to tank structure."

"Penelitian mengenai pendeteksian terhadap ruang terbatas proses pemesinan awal 5 Axis, merupakan salah satu bagian dalam pengembangan sistem CAM yang berbasis model faset 3D. Ruang terbatas dibedakan menjadi 2 bagian yaitu ruang terbatas terbuka dan ruang terbatas tertutup. Perbedaan ruang terbatas terbuka dan ruang terbatas tertutup yaitu perlunya orientasi pahat untuk proses pengerjaan ruang terbatas tertutup.Dalam penelitian ini pendeteksian ruang terbatas dilakukan dengan mendeteksi kebertumpukan segitiga dalam bidang x dan y dan perbedaaan arah vektor normal terhadap sumbu radius pahat. untuk mendapatkan hasil deteksi pahat pada ruang terbatas, penulis mengembangkan algoritma-algoritma dalam mengolah data yang berupa STL file. Metode yang telah dikembangkan ini kemudian di uji terhadap beberapa model produk dan mampu memberikan informasi mengenai adanya ruang terbatas dan areanya.

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The research concerning of bounded volume detection method for roughing process in multi-axis milling is one of a section to develop CAM system wich based on faceted model 3D. The bounded volume have 2 part wich very important, that is close boundary volume and open Boundary volume. The differences of open boundary volume and close boundary volume is tool oriented needed in machining process for close boundry volume.

In this research. Boundary volume will be get with detection of stacking of triangle and the differences of normal vector with normal angle of radius tool. To get bounded volume detection result, The writer develop algorithms to processing of STL file. The method which have been developed will be test to some models product and can give information regarding the existence of bounded volume area."

"This is the proceedings of the Eighth International Conference on Design Computing and Cognition (DCC 18) held at the Polytecnico di Milano in Italy. This volume presents both advances in theory and applications and demonstrates the depth and breadth of design computing and design cognition. Design thinking, the label given to the acts of designing, has become a paradigmatic view that has transcended the discipline of design and is now widely used in business and elsewhere. As a consequence there is an increasing interest in design research. This volume contains papers that represent the state-of-the-art research and developments in design computing and design cognition. This book is of particular interest to researchers, developers and users of advanced computation in design and those who need to gain a better understanding of designing that can be obtained through empirical studies."

"ABSTRAKKebutuhan akan SI/TI yang mendukung bisnis dan meningkatkan kapabilitas perusahaan di level enterprise merupakan suatu nilai tambah yang harus dipenuhi oleh setiap perusahaan. Meningkatnya kapabilitas dalam hal memberikan pelayanan dan jasa yang optimal harus didukung oleh berbagai hal, salah satunya adalah dengan menggunakan SI/TI yang berkualitas. Untuk merealisasikan hal tersebut, dibutuhkan suatu model rancangan arsitektur yang dapat digunakan sebagai landasan dan acuan dalam proses implementasi SI/TI yang diharapkan untuk saat ini dan masa depan.Dalam pengembangan solusi model rancangan arsitektur, penulis membandingkan 2 metodologi antara Zachman framework dengan TOGAF Architecture Development Model (ADM) agar didapatkan metodologi yang cocok untuk menjadi acuan dalam membuat rancangan Enterprise Architecture pada PT. XYZ. Metodologi yang didapat tersebut kemudian akan digunakan untuk menyediakan struktur dasar organisasi yang mendukung integrasi, pengembangan, pengelolaan, dan perubahan perangkat dari sisi SI/TI. Salah satu trend dalam dunia TI yang terkait dengan infrastruktur yang dapat dijadikan solusi dalam menjawab kebutuhan organisasi adalah konsep Cloud Computing. Cloud Computing memungkinkan organisasi untuk memberikan layanan aplikasi, infrastruktur dan database yang dapat digunakan secara bersama-sama, dan mobile oleh penggunanya melalui internet. Hasil akhir dari perancangan model enterprise architecture ini diharapkan dapat mengoptimalisasikan seluruh sumber daya SI/TI pada perusahaan, terutama dari sisi infrastruktur dan service yang dimiliki perusahaan dalam mendukung aktifitas bisnis, agar dapat memberikan pelayanan yang optimal kepada customer.

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ABSTRACTThe need for IS/IT that support business and enchance a company’s capabilities at enterprise level is an added value that must be met by each company. The increased capability in terms of providing optimal care and services must be supported by many things, one of the things is to use IS/IT with good quality. To achive that vision, we need a model of architectural design that can be used as the basis and reference for the implementation of IS/IT that the company wanted to be develop now and for the future.In developing the solution model of architecture design, the authors compared two methodologies between Zachman Framework and TOGAF Architecture Development Model (ADM) to obtain a suitable methodology for the reference on developing Enterprise Architecture at PT. XYZ. The methodology obtained is then used to provide the basic organizational structure that supports the integration, development, management, and procurement process of hardware or device from IS/IT. One trend in the world of IT related to the infrastructure that can be used as a solution to address the needs of the organization is the concept of Cloud Computin. Cloud Computing enables organizations to provide application services, infrastructure services, and database services that enables users to do mobile and multiple access via the internet. The result of the design of enterprise architecture model is expected to optimize all IS/IT resources in the company, especially in terms of infrastructure and services to support the company’s business activities, in order to provide optimum services to the customers."