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IPTEK Journal of Proceedings Series

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Published by Institut Teknologi Sepuluh Nopember Surabaya

ISSN : 23546026 EISSN : - DOI : -

Core Subject : Science,

Computer Science & IT

IPTEK Journal of Proceedings Series publishes is a journal that contains research work presented in conferences organized by Institut Teknologi Sepuluh Nopember. ISSN: 2354-6026. The First publication in 2013 year from all of full paper in International Conference on Aplied Technology, Science, and Art (APTECS). It publish one time a year after the held of APTECS event.

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Articles 1,079 Documents

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Measuring Performance Efficiency of Application applying Design Patterns and Refactoring Method Kholed Langsari; Siti Rochimah; Rizky Januar Akbar
IPTEK Journal of Proceedings Series No 1 (2018): 3rd International Seminar on Science and Technology (ISST) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Design patterns are always useful concept using in designing and developing a software application. Performance play essential role in the quality attribute of an enterprise application. It is useful to measure and examine how design patterns influence and affect the performance of an application. In this study, we investigate the impact of selected design pattern through refactoring processes for performance efficiency. The systematic study phases included; analyzing, refactoring and performance measuring with implemented in case study SIA system. The performance measuring measure with different test cases and round for the results comparison of each differences test cases and round for design pattern indicate an influence on the performance of an application

Silica-Coated Mesoporous Carbon as Solid Dessicant in Gas Dehydration Process Fadlilatul Taufany; Fahmi Fahmi; Nurhamidah Nurhamidah
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Dehydration process using solid desiccant is required to reduce water content to meet pipeline gas GPSA specification (4-7 lb/MMscf). Porous silica gel has a high specific surface area (Grade 12 brand Davisil 800 m2/g), which is generally obtained via a high-cost supercritical technology. This research aims to substitute that of high-cost super critical technology by developing silica-coated mesoporous carbon. This research uses an impregnating-silica method consisting of pretreatment and hydrophilication processes. Here we found that the pretreatment process can increase the surface area of mesoporous carbon from 504.122 m²/g to 823.5 m²/g. While for the hydrophylication process, silica-coated mesoporous carbon was obtained via mechanical and chemical force. Silica-coated mesoporous carbon has adsorption capacity 70.59% of commercial silica gel.

Software Cost Estimation Using Function Point Analysis Anggi Yhurinda Perdana Putri; Apol Pribadi Subriadi
IPTEK Journal of Proceedings Series No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018)
Publisher : Institut Teknologi Sepuluh Nopember

Software Cost Estimation is an important activity in software development projects. Various measurement methods are widely applied to estimate software cost, and one of them is Function Point Method. Function Point (FPA) method measures the software by measuring software functionality that provided to users based on design logic. The measurement consist of several steps: calculate Unadjusted Function Point (UFP), Value Adjustment Factor (VAF), Adjusted Function Point (AFP) and estimate the software cost. Software project that became the object of this research were four licensing projects from local government with total cost 229.680.000. The estimated total cost of four projects using Function Point method is 216.956.881 rupiahs. The percentage gap between the actual with the function point that is equal to 5.54%. It can be concluded that FPA is an accurate method and this cost estimation can be used by developers in determining the cost of software to be built

The comparation of cultural dimention between Sulawesi, Indonesia and Philippine: a measurement of five Indonesian islands R Setyaningrum; A R Wijaya; Subagyo Subagyo
IPTEK Journal of Proceedings Series No 3 (2018): International Conference on Industrial and System Engineering (IConISE) 2017
Publisher : Institut Teknologi Sepuluh Nopember

The Indonesian archipelago is bordered by many countries, such as Sulawesi island bordered by the Philippines. The culture of Sulawesi allegedly had the same style with the culture of the Filipinos. Several studies have examined the details of Indonesian culture, especially the culture of Sulawesi and the Philippines, but has not studied the details of the cultural dimension measurement of both countries. This study aims to measure the dimensions of Hofstede cultural communities in the Indonesian archipelago and do a comparative study of cultural dimensions of Hofstede to Sulawesi and the Philippines. The data (631 respondents) was analysed using calculations score of Hofstede cultural dimensions consists of the Power Distance Index (PDI), Individualism (IDV), Masculinity (MAS), Long-term orientation (LTO) and Uncertainty Avoidance (UAI). The measurement results of Hofstede cultural dimensions Indonesia is slightly different from the predecessor research. There are several dimensions of Hofstede Indonesian culture which decreased compared to the results of research on the IBM Company, which consists of PDI, UAI, and LTO as well as an increase at IDV and MAS. The geographical position of the region of Sulawesi and the Philippines affect both cultural interactions. Several cultural dimension scores of Sulawesi and the Philippines were relatively close. It shows that Sulawesi and the Philippines have similar cultural dimensions PDI, IDV and MAS. This cultural dimension measurement results expected to contribute to the fields of science related to the cultural mapping of Indonesia and the Philippines.

Effect a Chemical Treatment of Pineapple Leaf Fiber (PALF) for Mechanical Properties as a Reinforced Composite Matrix Polyesters Fadil Azhar Ekoputra; Sulistijono Sulistijono; Ika Ismail
IPTEK Journal of Proceedings Series No 4 (2018): The 3rd International Conference On Materials and Metallurgical Engineering and Technol
Publisher : Institut Teknologi Sepuluh Nopember

Application of composite materials as a alternative materials is developed, The most of composite material is polymer matrix composite (PMC), with the polymer as a matrix and the sintetic fiber such as fiberglass and fiber carbon as a reinforced, it can make a materials with intermediete mechanical properties such as strength, hardness and thoughness, between matrix and fiber. Since the synthetic fiber was dangerous for human, so recenly developing natural fiber composite with advantages of natural fiber is more environmentally friendly, and more cheap than synthetic fiber. Otherwise, natural fiber has stong enough when it use at interior automotive parts, such as dashboard. Some cars already use the natural fiber for the interior parts. The natural fiber has a big potential, especially pineapple in Indonesia, the pineapple production at East Kalimantan is 25 344 tonnes in 2014. It means a lot of leaves can be used for the natural fiber. Pineapple leaf fiber (Pineapple Leaf Fiber / PALF) has a pretty good tensile strength of 126 MPa, and Young modulus of 4405 MPa and has a cellulose content About a 70-80% cellulose, cellulose which has a crystalline structure, so it can be good reinforced for composite. The result of this experiment, the optimum value of tensile strength is 29.9648 MPa, at composite PALF – Alcalinitation 40%.

Taxiway Pavement Evaluation to Support the Operational of Terminal 2 Juanda Airport Istiar Istiar; Indrasurya B. Mochtar; Wahyu Herijanto; Catur Arif Prastyanto
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

The movement of aircraft and passengers at Juanda international airport is increasing every year. In 2012, the air side infrastructure of Juanda airport almost reached the maximum capacity. In other side, PT. Angkasa Pura I as the operator of Juanda airport had planned to revitalize the Juanda airport terminal that located on the south side. This terminal was not operated for 8 years. The pavement of taxiway should be evaluated its strength. The evaluation method compared The Pavement Classification Number (PCN) of taxiway pavement with Aircraft Classification Number (ACN). If PCN value was higher than ACN value, so the taxiway pavement could serve aircraft movements. The pavement of taxiway on Juanda airport evaluated by using software COMFAA. Data input into the software COMFAA was the existing pavement structure and the movement of the aircraft that will to use south side of Juanda Airport Terminal. The scenario 1 result is the exiting pavement should be overlaid 7 inches to support The operational of Terminal 2 Juanda Airport. In other side, scenario 2 result showed that the existing taxiway pavement structure was able to hold the load of aircraft movements over 20 years. The PCN value is 80.2 dan the ACN values are 89.3 in the scenario 1 and 75 in the scenario 2.

Abstract of Invited Speaker : Utilization of Local Materials in Green Concrete Technology Ridho Bayuaji
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Sustainable development is a concept in green building, which involves ecological, social and economic objectives. It requires to sustain the integrity of resources exploitation, the orientation of technological development and the direction of investments. Concrete is most used construction material worldwide. However, the concrete also brings a great environmental cost. The billions of tons of natural materials mined and processed every year and huge enormous amounts of energy required to produce the cement as well as 7-8% of CO2 released into the atmosphere in the cement processing. This paper discusses the various efforts to improve the concrete environmental friendliness or as a green building material. The most potential successful effort in this matter is utilize local substitutes for cement, especially those that are byproducts of industrial processes, like fly ash, ground granulated blast furnace slag and silica fume

Analysing Peatland Subsidence in Pelalawan Regency, Riau Using DInSAR Method Ruli Dwi Susanti; Ira Mutiara Anjasmara
IPTEK Journal of Proceedings Series No 2 (2019): The 3rd Geomatics International Conference (GEOICON) 2018
Publisher : Institut Teknologi Sepuluh Nopember

Indonesia is known as a country that have the largest peatland in Southeast Asia. Peatland is often used in agricultural, plantation and settlement purposes. Before, peatland must be drained as one procedure of land clearing activity. However, an error during this process often comes and cause some problems such as drought, subsidence and even forest fire. A characteristic of peatland, irrewetable, making peatland is very hard to be wet after getting dry. This research is aiming to observe peatland subsidence in Pelalawan Regency, Riau using SAR data Sentinel 1-A. The method that we use is Differential Interferometry Synthetic Aperture Radar (DInSAR). Beside Sentinel 1-A, DEM STRTM is used to remove topographic effect. Temporal baseline in this research is about one year between two acquisition data. The first pair of data is acquired in June 2015 and June 2016. While the second pair of data is acquired in June 2016 and July 2017. By using two pass DInSAR method, the process will yield two images of Line of Sight (LOS) Displacement during each period. The first DInSAR (June 2015-June 2016) reveals that the highest subsidence that occur in peatland is about 109,113 mm and the highest uplift is about 108,089 mm. The second DInSAR (June 2016-July 2017) reveals that the highest peat subsidence is about 251,842 mm and the highest uplift is about 73,715 mm.

Factors Affecting the Decision to Use Just-In-Time Method for Precast Components in Surabaya Construction Industry Vinza Firqinia Fristia; Trijoko Wahyu Adi
IPTEK Journal of Proceedings Series No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Lack of management of precast components lead to decreased productivity of work. The use of Just-In-Time (JIT) method in construction projects aimed to reduce production costs, improved quality, and increased productivity. However, not all construction companies implement JIT on the Surabaya construction project. This study aimed to identify factors that influence to use JIT method decisions for precast components in Surabaya construction company. Data from questionnaires were collected and analysed using Relative-Importance-Index analysis and Confidence-Interval. The results of research that Surabaya construction company have knew and understood but still not implemented. Factors that influence at construction project were planning and efficient communication between all stakeholders.Kurangnya pengelolaan komponen pracetak mengakibatkan produktivitas kerja menurun. Penggunaan metode Just-In-Time (JIT) dalam proyek-proyek konstruksi bertujuan mengurangi biaya produksi, meningkatkan kualitas dan produktivitas. Namun, tidak semua perusahaan konstruksi menerapkan pada proyek konstruksi kota Surabaya. Penelitian ini bertujuan mengidentifikasi faktor-faktor yang mempengaruhi keputusan menggunakan metode JIT untuk komponen pracetak dalam perusahaan konstruksi kota Surabaya. Data dari kuesioner dikumpulkan dan dianalisis menggunakan analisis Relative-Importance-Index dan confidence-interval. Hasil penelitian bahwa perusahaan konstruksi Kota Surabaya telah mengetahui dan memahami namun masih belum menerapkan. Faktor yang mempengaruhi dalam proyek konstruksi ialah perencanaan dan komunikasi secara efisien antara semua pemangku kepentingan.

Membangun Infrastruktur Layanan Keuangan Digital pada Kawasan Terluar, Tepencil, Terisolir dan Tertinggal di Provinsi Kalimantan Barat Arkanudin Arkanudin; Erdi Erdi
IPTEK Journal of Proceedings Series No 5 (2017): Simposium I Jaringan Perguruan Tinggi untuk Pembangunan Infrastruktur Indonesia (2016)
Publisher : Institut Teknologi Sepuluh Nopember

Ketika melaksanakan kegiatan penelitian di beberapa daerah tertinggal, daerah terbelakang, kawasan perbatasan dan kawasan hutan pedalaman di Kalimantan Barat tahun 2015 yang lalu, ternyata hampir seluruh daerah yang penulis kunjungi, mulai kawasan perbatasan di Kabupaten Sambas, Bengkayang, Sanggau, Sintang dan Kapuas Hulu, atau kawasan hutan pedalaman di Kabupaten Kapuas Hulu, kawasan Tertinggal dan Daerah Terisolir di Kabupaten Kayong Utara; Provinsi Kalimantan Barat telah mendapatkan layanan “keuangan dan perbankan” secara baik; tidak saja dalam transaksi manual tetapi juga secara online yang dilakukan oleh sebuah koperasi yang lebih dikenal dengan sebutan Credit Union (CU).Seterusnya, ketika penulis masuk dalam ranah pelayanan keuangan oleh CU kepada anggotanya di beberapa daerah itu, pengurus CU di daerah yang penulis kunjungi di atas telah memastikan bahwa transaksi keuangan bagi seluruh anggota telah terlayani secara baik dan transparan. Dikatakan juga bahwa transaksi keuangan itu sesungguhnya dilakukan secara online karena terintegrasi dengan system layanan yang telah terbangun di beberapa kantor pusat CU. Sebaliknya, keadaan serupa belum mampu dilakukan oleh bank operasi di kawasan-kawasan tertinggal itu. Namun, kami tetap belum ingin membuat simpulan bahwa komitmen CU ternyata lebih hebat dan lebih kokoh dibanding komitmen Bank Indonesia (BI); apakan lagi dibanding dengan komitmen Bank Operasional (BO) yang lebih berorientasi pada bisnis.Paper ini mencoba untuk melihat kendala dalam pembangunan infrastruktur layanan keuangan digital (LKD) di Kalimantan Barat yang semestinya dapat dilakukan oleh pemerintah dalam rangka memberikan layanan public kepada masyarakat yang selama ini belum tersentuh oleh layanan bank (underbanked) dan anggota masyarakat yang pelayanan perbankannya masih sangat terbatas (unbanked). mengingat layanan LKD adalah bagian integral dari layanan public yang telah menjadi komitmen dari pemerintah di negeri ini. Bukankan kehadiran pemerintah adalah untuk melindungi segenap bangsa Indonesia. Ketika jumlah mereka tidak dianggap cukup untuk diberikan pelayanan, apakah pemerintah dengan begitu saja meninggalkan mereka dan membiarkan hak-hak sebagai warga negara tidak terpenuhi di garis batas negeri? Kalau demikian adanya, maka kehadiran pemerintah di aras batas negeri patut dipertanyakan dan bahkan keberadaan mereka dianggap tidak penting dalam struktur pembentuk ekonomi politik di negeri ini.

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