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All Journal Jurnal Informatika Jurnal Teknik Elektro Jurnal Teknik Industri Jurnal Titra Record and Library Journal Journal of Documentation and Information Science International Journal of Industrial Optimization (IJIO)

Siana Halim

Fakulty of Industrial Technology,Industrial Engineering Department, Petra Christian University, Jl. Siwalankerto 121-131, Surabaya 60236

Author-ID : 273217

Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Social Sciences

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Reliability Centered Maintenance di PT. X Sigit, Olivia; Halim, Siana
Jurnal Titra Vol 3, No 2 (2015)
Publisher : Jurnal Titra

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The breakdown machines in the production process at PT. X especially in the Material Mixture Division are occurred quite often. During January to February 2015, those machines 23 times (22.5%) are breakdowns. Therefore, the objective of this research is to design the right maintenance strategy in particularly for machines which have longest downtime. Reliability Centered Maintenance (RCM) with Dempster-Shafer approach is used to solve this problem, since the company does not have historical data. As the results, replacement and condition based maintenance are chosen. Those strategies are the most appropraite and possible ones strategies to be applied in PT. X.

Library for the Digital Natives Generation: What to do? Halim, Siana; Wulandari, Dian; Kasih, Demmy; -, Felecia; -, Inggrid
Record and Library Journal Vol 2, No 1 (2016): Januari - Juni
Publisher : Universitas Airlangga

Nowadays, people do not need to go to the library for searching knowledge or information. World has changed. We come to the new generation that so called as digital native generation. Information can be searched through the gadgets on hands which is connected to the internet. Then question comes, is the library still important? What should the library do? It is no wonder that most of the libraries have been decreasing its number of visitors as well as its number of books that out of the shells. This paper describes the characteristics of the digital native, people habit in learning and reading books.Â It also summarizes some discussions among the heads of the three university libraries in Surabaya, i.e, Intitut Teknologi Sepuluh (ITS) Nopember Surabaya, Petra Christian University (PCU), Surabaya Universities (Ubaya). The results of the discussion show that library has to be changed so that they can accommodate the needs of the digital native. It is not only the place for borrowing books, but also the place for doing discussion, watching videos and listening to audios, and of course the online materials must be provided to encounter the decreasing visitors.

Library for the Digital Natives Generation: What to do Halim, Siana; Wulandari, Dian; Kasih, Demmy; Felecia, Felecia; Inggrid, Inggrid
Record and Library Journal Vol 2, No 1 (2016)
Publisher : D3 Teknisi Perpustakaan Fakultas Vokasi Universitas Airlangga

Nowadays, people does not need to go to the library for searching knowledge or information. World does change. We come to the new generation that so called as digital native generation. Information can be search through the gadgets on hands which connected to the internet. Then comes the question. Is the library still important? What the library should do? It is no wonder that most of the libraries have decreasing number of visitors as well as decreasing number of books that out of the shells. This paper describes the characteristics of the digital native, their habit in learning and reading books.Â It also summarized some discussions among the head of the three university libraries in Surabaya, i.e, Intitut Teknologi Sepuluh (ITS) Nopember Surabaya, Petra Christian University (PCU), Surabaya Universities (Ubaya). The results of the discussion shows, that library has to be changed so that they can accommodate the needs of the digital native. It is not only the place for borrowing books, but also the place for doing discussion, watching videos and listening to audios, and of course the online materials must be provided to encounter the decreasing visitors.

MENATA ULANG LAYOUT FASILITAS PERPUSTAKAAN UNIVERSITAS KRISTEN PETRA SESUAI KEBUTUHAN GENERASI DIGITAL NATIVE Felecia, Felecia; Wulandari, Dian; Halim, Siana
Journal of Documentation and Information Science Vol 2, No 2 (2018): September
Publisher : Association of Indonesian Library and Information Professionals

One aspect of library quality is as ?library as a place?. As the main aspect that influences customer satisfaction, the library as a place needs to get attention from the library including structuring the layout of library facilities. This study aims to determine the layout of library facilities according to the needs of the native digital generation at the Christian Petra University Library. If library facilities are arranged with a good layout, there will be an increase in productivity, work efficiency and will have an impact on customer satisfaction. The Head of the Library and/or structural officials were chosen as respondents because they were more aware of the relationship between the sections and understood the needs of the generation of digital natives currently served. The method used in this study is systematic layout planning by adopting the ARC (Activity Relationship Chart) technique to show the level of importance between departments/sections, and the results will be used as a replacement of flows between departments/sections. CRAFT is used as a computer simulation tool to improve facility layout (re-layout) by minimizing the moment of movement between facilities. The results showed that it was necessary to rearrange Petra?s UK library facilities on each floor, in which the results of this study was surely tested through a questionnaire for students who were digital native generation and were the largest users of the library.

MODIFIED ISING MODEL FOR GENERATING BINARY IMAGES Halim, Siana
Jurnal Informatika Vol 8, No 2 (2007): NOVEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

In this paper the Ising model is modified by considering its parameters as a vector that depends on the neighborhoods of the image's pixels. We applied this modification for generating binary images, provided the original image is given. An example is exposed as a result of simulation using Gibbs sampler.

Replikasi Signal dengan Menggunakan Metode Bootstrap Halim, Siana
Jurnal Teknik Elektro Vol 7, No 2 (2007): SEPTEMBER 2007
Publisher : Institute of Research and Community Outreach

Signal can be modeled as a periodic or a nonperiodic stochastic process. Therefore to replicate a signal, we should keep the original character of the signal as well as the random character in it. One of plausible methods for doing such kind of job is bootstrap. However, we should modify the boostrap to accomodate the dependency in the series and their periodicities. As the pre bootraping we need to detect the existence of periodicities in the series. Two methods are given for detecting the existence of periodicities, i.e. the Fisher classical statistic, and the Chiu statistic. At the end we give an illustration. We used simulated data for testing and replicating a signal. Abstract in Bahasa Indonesia : Signal dapat dimodelkan sebagai proses stokastik yang berperiode ataupun tidak berperiode. Untuk itu dalam mereplikasi sebuah signal, kita harus tetap menjaga karakter asli dari signal dan juga sifat keacakannya. Salah satu metode yang mungkin untuk dilakukan adalah bootstrap. Namun demikian, kita harus memodifikasi metode bootrap ini untuk mengakomodasi sifat ketergantungan dari series beserta periodisitasnya. Sebagai langkah awal dalam bootstrap ini diperlukan uji ada tidaknya periodisitas dalam signal. Diberikan dua metode untuk mendeteksi periodisitas, yaitu Fisher statistik dan Chiu statistik dan sebuah ilustrasi dengan menggunakan data simulasi untuk menguji dan mereplikasi sebuah signal. Kata kunci: bootstrap, periodogram, fisher statistic

REGRESSION ANALYSIS OF PRODUCTIVITY USING MIXED EFFECT MODEL Halim, Siana; N Bisono, Indriati
Jurnal Teknik Industri Vol 9, No 2 (2007): DECEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Production plants of a company are located in several areas that spread across Middle and East Java. As the production process employs mostly manpower, we suspected that each location has different characteristics affecting the productivity. Thus, the production data may have a spatial and hierarchical structure. For fitting a linear regression using the ordinary techniques, we are required to make some assumptions about the nature of the residuals i.e. independent, identically and normally distributed. However, these assumptions were rarely fulfilled especially for data that have a spatial and hierarchical structure. We worked out the problem using mixed effect model. This paper discusses the model construction of productivity and several characteristics in the production line by taking location as a random effect. The simple model with high utility that satisfies the necessary regression assumptions was built using a free statistic software R version 2.6.1.

PENENTUAN HARGA JUAL HUNIAN PADA APARTEMEN DI SURABAYA DENGAN MENGGUNAKAN METODE REGRESI SPASIAL Halim, Siana; Anastasia, Njo; Eval, Agnes; Tobing, Aida Fitriani
Jurnal Teknik Industri Vol 10, No 2 (2008): DECEMBER 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

In the modern society, apartments are one of the answers to the need of residential for the citizens due to limited area for landed housing and over crowded city for businesses. Therefore, it will be very interested to investigate the price of appartements, since they are not only influenced by, e.g., physical factors, location, external factor and distance to the central business district, but also they have dependency to the price of other appartements in the neighborhoods. This dependency is called the spatial dependency; to accommodate this dependency to model the price of apartemen by ordinary least square is not enough. Therefore, in this research we used the spatial regresion to model the price of appartements, particularly in Surabaya. Abstract in Bahasa Indonesia: Dalam masyarakat modern, apartemen merupakan salah satu jawaban akan kebutuhan tempat tinggal bagi warga kota, karena adanya keterbatasan lahan untuk perumahan dan kota yang padat dengan daerah bisnis. Oleh karena itu sangatlah menarik untuk menginvestigasi harga apartemen, karena mereka tidak hanya tergantung pada, misalnya, faktor fisik, lokasi, faktor eksternal dan jarak ke pusat bisnis, tetapi juga tergantung pada harga apartemen di daerah sekitarnya. Ketergantungan ini disebut dengan ketergantungan spasial. Untuk mengakomodasi ketergatungan ini memodelkan harga jual apartemen dengan menggunakan metode regresi linear biasa tidaklah cukup. Pada penelitian ini, akan digunakan model regresi spasial untuk memodelkan harga apartemen khususnya di Surabaya. Kata kunci: Ordinary Least Square (OLS), Spatial Regresion, Spatial Auto Regresion (SAR).

FUNGSI-FUNGSI KERNEL PADA METODE REGRESI NONPARAMETRIK DAN APLIKASINYA PADA PRIEST RIVER EXPERIMENTAL FORESTÂ’S DATA Halim, Siana; Bisono, Indriati
Jurnal Teknik Industri Vol 8, No 1 (2006): JUNE 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

In this paper we discuss some models for estimating the regression function, provided the data Y is given. The programming of these function are presented as well as the "tricks" in the R- programming, a statistical freeware. We applied these models to The Priest River Experimental Forest's data. Abstract in Bahasa Indonesia : Dalam paper ini akan diberikan beberapa model untuk mengestimasi fungsi regresi bila sebuah data Y diberikan. Pembuatan fungsi - fungsi estimasti tersebut juga diberikan dengan menggunakan freeware statistik R dan juga diberikan beberapa trik dalam pemrograman. Model-model ini diaplikasikan pada Priest River Experimental Forest's data. Kata kunci: regresi nonparametrik, smoothing, kernel, R.

APLIKASI MARKOV RANDOM FIELD PADA MASALAH INDUSTRI Halim, Siana
Jurnal Teknik Industri Vol 4, No 1 (2002): JUNE 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

Markov chain in the stochastic process is widely used in the industrial problems particularly in the problem of determining the market share of products. In this paper we are going to extend the one in the random field so called the Markov Random Field and applied also in the market share problem with restriction the market is considered as a discrete lattice and Pott's models are going to be used as the potential function. Metropolis sampler is going to be used to determine the stability condition. Abstract in Bahasa Indonesia : Rantai Markov dalam proses stokastik seringkali digunakan dalam penyelesaian masalah industri khususnya dalam masalah penentuan market share. Dalam artikel ini akan dibahas perluasan Rantai Markov tesebut ke dalam sebuah random field yang disebut sebagai Markov Random Field (MRF) yang juga akan diaplikasikan pada masalah market share dengan batasan daerah pemasarannya dianggap sebagai sebuah lattice diskrit dan fungsi potensial yang akan digunakan adalah Potts models. Akan digunakan Metropolis sampler untuk menentukan kondisi stabil. Kata kunci: proses stokastik, Markov Random Field, Gibbs Random Field, Potts model, Metropolis sampling.

Co-Authors Adrian Michael Wibisono Agnes Eval Aida Fitriani Tobing Amelia Agnes Sunjono, Amelia Agnes Arif Chandra Cicely Elviani David Christian, David David Soebiantoro Demmy Kasih, Demmy Dian Wulandari Felecia - Felecia . Felecia Felecia Felicia Tedja Widjaja, Felicia Tedja Genesius Chandra Hendrik Sumawi Herman Mallian Indriati Bisono Indriati N Bisono Inggrid -, Inggrid Inggrid Inggrid Jani Rahardjo Johan Widjaja Njo Anastasia Olivia Sigit, Olivia Oviliani Yenty Yuliana Pauline Astari Singgih Putri, Kristina Sanjaya Shirley Adelia Stefanie Hartanto Tan Didik Wardoyo Tanusi Tanti Octavia Valencia Suseno veronica - Yohan Wahyudi Yuliana Vina Humira

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