Identitas Prosiding : a. Nama Prosiding : 2018 4th International Conference on

(1)

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Judul Prosiding (Artikel) : Stock Control of Single Product Inventory System with Imperfect Delivery by Using Robust Linear Quadratic Regulator

Nama/Jumlah Penulis : Muhammad Fauzan Luthfi, Sutrisno, Widowati/ 3 orang Status Pengusul : penulis ke- 3

Identitas Prosiding : a. Nama Prosiding : 2018 4th International Conference on

Science and Technology (ICST)

b. Nomor ISBN : Electronic ISBN: 978-1-5386-5813-0

USB ISBN: 978-1-5386-5812-3Print on

Demand(PoD) ISBN: 978-1-5386-5814-7

c. Volume, nomor, bulan tahun : No.18233781, 15 Nov 2018

d. Penerbit : IEEE

e. DOI artikel (jika ada) : 10.1109/ICSTC.2018.8528682 f. Alamat web Prosiding :

URL PROSIDING : https://ieeexplore.ieee.org/xpl/conhome/8510778/proceeding URL ARTIKEL : https://ieeexplore.ieee.org/document/8528682

g. Terindeks di Scopus : SJR 0.129 (2018)

https://www.scimagojr.com/journalsearch.php?q=21100805784&tip=sid&clean=0

Kategori Publikasi Prosiding : Prosiding Internasional Terindeks (beri pada kategori yang tepat) Prosiding Internasional

Prosiding Nasional

Hasil Penilaian Peer Review : Komponen Yang Dinilai

Nilai Reviewer

Nilai Rata-rata Reviewer I Reviewer II

a. Kelengkapan unsur isi prosiding (10%) 2.25 2.5 ^2.37

b. Ruang lingkup dan kedalaman pembahasan (30%) 7.12 5.83 ^6.47

c. Kecukupan dan kemutahiran data/informasi dan metodologi (30%)

7.08

5.83 6.45 d. Kelengkapan unsur dan kualitas terbitan/prosiding

(30%)

6.35

5.83

6.09 Total = (100%) 22.8 19.99 ^21.38

Nilai Pengusul = 40% x1/2 4.56 3.99 4.27

Semarang, April 2020

Reviewer 2 Reviewer 1

Prof. Dr. St. Budi Waluya, M.Si Prof. Dr. Basuki Widodo, M.Sc

NIP. 196809071993031002 NIP. 19650506 1989031002

Unit kerja : Matematika FMIPA UNNES Unit kerja : Matematika FSAD ITS

(2)

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Judul Prosiding (Artikel) : Stock Control of Single Product Inventory System with Imperfect Delivery by Using Robust Linear Quadratic Regulator

Nama/Jumlah Penulis : Muhammad Fauzan Luthfi, Sutrisno, Widowati/ 3 orang Status Pengusul : penulis ke- 3

Identitas Prosiding : a. Nama Prosiding : 2018 4th International Conference on

Science and Technology (ICST)

b. Nomor ISBN : Electronic ISBN: 978-1-5386-5813-0

USB ISBN: 978-1-5386-5812-3Print on

Demand(PoD) ISBN: 978-1-5386-5814-7

c. Volume, nomor, bulan tahun : No.18233781, 15 Nov 2018

d. Penerbit : IEEE

e. DOI artikel (jika ada) : 10.1109/ICSTC.2018.8528682 f. Alamat web Prosiding :

URL PROSIDING : https://ieeexplore.ieee.org/xpl/conhome/8510778/proceeding URL ARTIKEL : https://ieeexplore.ieee.org/document/8528682

g. Terindeks di Scopus : SJR 0.129 (2018)

https://www.scimagojr.com/journalsearch.php?q=21100805784&tip=sid&clean=0 Kategori Publikasi Prosiding : Prosiding Internasional Terindeks

(beri pada kategori yang tepat) Prosiding Internasional Prosiding Nasional

Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Maksimal Prosiding

Nilai Akhir Yang Diperoleh Prosiding

Internasional Terindeks

Prosiding Internasional

Prosiding Nasional

a. Kelengkapan unsur isi prosiding (10%) 2,50 2.25

b. Ruang lingkup dan kedalaman pembahasan (30%)

7,50 7.12

c. Kecukupan dan kemutahiran

data/informasi dan metodologi (30%)

7,50 7.08

d. Kelengkapan unsur dan kualitas terbitan/prosiding (30%)

7,50 6.35

Total = (100%) 25,00 22.8

Nilai Pengusul = 40% x1/2x 22.8=4.56 Catatan Penilaian artikel oleh Reviewer :

1. Kesesuaian dan kelengkapan unsur isi prosiding :

Penulisan artikel baik dan mengikuti standard penulisan artikel di prosiding 4th International Conference on Science and Technology (ICST) 2018, yaitu abstract, Introduction, Result and Discussion (IRaD), Conclusion dan Acknowledgement. Belum memuat Methodology. Artikel ini didukung dengan referensi yang sesuai.

2. Ruang lingkup dan kedalaman pembahasan:

Lingkup bahasan dari artikel ini adalah bidang matematika terapan, khususnya pada bidang riset operasi (logistik dan manajemen rantai pasok). Dalam artikel ini dibahas dengan baik tentang masalah kontrol optimal untuk sistem persediaan produk tunggal dengan pengiriman tidak sempurna. Relevansi hasil terkait keputusan optimal dari produk yang dipesan yang diikuti dengan tingkat persediaan yang diinginkan.

3. Kecukupan dan kemutakhiran data/informasi dan metodologi :

Informasi yang disajikan cukup baru dan hasil yang diperoleh memuat substansi aplikasi yang penting.

Sumber gagasan penulis untuk artikel ini banyak, komprehensif dan update, yang lebih sepuluh tahun terakhir

hanya 4 paper dari 13 sumber yang dirujuk. Methodologi belum disebutkan dalam artikel ini.

(3)

4. Kelengkapan unsur dan kualitas terbitan:

Artikel memenuhi standard penulisan dan isi untuk prosiding 4th International Conference on Science and Technology (ICST) 2018. Artikel diterbitkan tahun 2018 di prosiding 4th International Conference on Science and Technology (ICST) 2018 dan belum terindeks di Scopus. Artikel-artikel yang terindeks scopus ada di prosiding 2th International Conference on Science and Technology (ICST) 2016.

Surabaya, 18 April 2020 Reviewer 1

Prof. Dr. Basuki Widodo, M.Sc

NIP. 19650506 1989031002

Unit kerja : Matematika FSAD ITS

(4)

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Judul Prosiding (Artikel) : Stock Control of Single Product Inventory System with Imperfect Delivery by Using Robust Linear Quadratic Regulator

Nama/Jumlah Penulis : Muhammad Fauzan Luthfi, Sutrisno, Widowati/ 3 orang Status Pengusul : penulis ke- 3

Identitas Prosiding : a. Nama Prosiding : 2018 4th International Conference on

Science and Technology (ICST)

b. Nomor ISBN : Electronic ISBN: 978-1-5386-5813-0

USB ISBN: 978-1-5386-5812-3Print on

Demand(PoD) ISBN: 978-1-5386-5814-7

c. Volume, nomor, bulan tahun : No.18233781, 15 Nov 2018

d. Penerbit : IEEE

e. DOI artikel (jika ada) : 10.1109/ICSTC.2018.8528682 f. Alamat web Prosiding :

URL PROSIDING : https://ieeexplore.ieee.org/xpl/conhome/8510778/proceeding URL ARTIKEL : https://ieeexplore.ieee.org/document/8528682

g. Terindeks di Scopus : SJR 0.129 (2018)

https://www.scimagojr.com/journalsearch.php?q=21100805784&tip=sid&clean=0

Kategori Publikasi Prosiding : Prosiding Internasional Terindeks (beri pada kategori yang tepat) Prosiding Internasional

Prosiding Nasional Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Maksimal Jurnal Ilmiah

Nilai Akhir Yang Diperoleh Prosiding

Internasional Terindeks

Prosiding Internasional

Prosiding Nasional

a. Kelengkapan unsur isi prosiding (10%) 2,50 2.5

b. Ruang lingkup dan kedalaman pembahasan (30%)

7,50

5.83 c. Kecukupan dan kemutahiran

data/informasi dan metodologi (30%)

7,50

5.83 d. Kelengkapan unsur dan kualitas

terbitan/prosiding (30%)

7,50

5.83 Total = (100%) 25,00 19.99

Nilai Pengusul = 40% x1/2x19.99= 3.99

Catatan Penilaian artikel oleh Reviewer :

1. Kesesuaian dan kelengkapan unsur isi prosiding:

Kesesuaian dan kelengkapan unsur isi baik. Artikel tersusun dalam kaidah penuliasan karta ilmiah. Terdiri atas 5 bagian:

Introduction, Mathematical Model, Robust linear quadratic regulator review, Computational experiment, Conclusion.

Didukung 13 referensi yang sebaian besar berupa jurnal.

2. Ruang lingkup dan kedalaman pembahasan:

Ruang lingkup dan kedalaman pembahasan cukup baik. Pembahasan mengenai an optimal control problem for

single product inventory system with imperfect delivery . Pembahasan kurang medetail dalam menginterpretasi

hasil terutama gambar.Termasuk Matematika Terapan yang sesuai dengan bidang keilmuan pengusul. Hasil

yang diperoleh secara substansi menunjukkan kebaharuan.

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3. Kecukupan dan kemutakhiran data/informasi dan metodologi :

Kecukupan dan kemutakhiran data/informasi dan metodologi dalam menyelesaikan masalah baik. Terdapat 13 referensi yang up to date, Sebagian besar berupa jurnal (4 referensi sudah lebih dari 10 tahun).

4. Kelengkapan unsur dan kualitas terbitan:

Kelengkapan unsur dan kualitas terbitan cukup baik. Artikel diterbitakan dalam 2018 4th International Conference on Science and Technology (ICST), Penerbit IEEE. Terindeks di Scopus: SJR 0.129 (2018). Hasil Turnitin similarity index

=13%.

Semarang, April 2020 Reviewer 2

Prof. Dr. St. Budi Waluya, M.Si NIP. 196809071993031002

Unit kerja : Matematika FMIPA UNNES

(6)

(7)

Document details

11 of 36

Stock Control of Single Product Inventory System with Imperfect Delivery by Using Robust Linear Quadratic Regulator

(Conference Paper)

, ,

Department Mathematics, Diponegoro University, Semarang, Indonesia

Abstract

In advanced inventory management problem, the received product will be not always entirely accepted due to the imperfect delivery process. The accepted delivered product volume can be represented by acceptance rate that is unknown/uncertain for the future delivery process. Then, a mathematical model and control method that can handle this problem is needed in order to control the product stock level in the warehouse. In this paper, we formulate a dynamical linear system with random parameter in the matrix coefficient to solve the inventory control problem with imperfect delivery proves and apply the robust linear quadratic regulator (RLQR) to find the optimal decision i.e. the optimal volume of the product that will be purchased at any review time period so that the inventory level will follow some set point decided by the decision maker with minimal effort (cost). To illustrate the model and its optimal decision, a computational experiment was performed with randomly generated inventory data. From the result, the optimal volume of the product for each review time period was determined where the product stock level was followed the desired set point. © IEEE.

SciVal Topic Prominence

Topic:

Prominence percentile: 85.301

Author keywords

imperfect delivery Inventory control robust LQR

Indexed keywords

Engineering controlled terms:

Decision making Linear systems

Engineering uncontrolled terms

Computational experiment Dynamical linear systems imperfect delivery Inventory control problems Inventory management Linear quadratic regulator Modeling and control robust LQR

Engineering main heading:

Inventory control

Funding details

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Proceedings - 2018 4th International Conference on Science and Technology, ICST 2018 8 November 2018, Article number 8528682

4th International Conference on Science and Technology, ICST 2018; Eastparc HotelYogyakarta;

Indonesia; 7 August 2018 through 8 August 2018; Category numberCFP18WOF-ART;

Code 142423

Luthﬁ, M.F.  Sutrisno  Widowati  

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Inventory control | Inventory | Optimal policies

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Welcoming Remarks from the Chairman

The honorable Rector of Universitas Gadjah Mada, dear distinguished guests, invited speakers, participants, ladies, and gentlemen, on behalf of the organizing committee, I would like to welcome you all to the 4

^th

International Conference on Science and Technology (ICST 2018).

The 4

^th

International Conference on Science and Technology consists of seven symposia, namely Computer and Information Technology Symposium; Electronics, Communication, Control, and Instrumentation Symposium; Environmental and Earth Science Symposium; Material Science and Chemistry Symposium; Mechanical and Industrial Engineering Symposium; Power and Energy Symposium; and Remote Sensing and Geomatics Symposium. In addition, the conference committee has invited nine renowned speakers, Prof. Fitri Yuli Zulkifli from Universitas Indonesia; Prof. Gerard Remijn from Kyushu University, Japan; Prof. Hutomo Suryo Wasisto from Technische Universität Braunschweig, Germany; Dr. Deendarlianto from Universitas Gadjah Mada; Prof. Azhar Zam from University of Basel, Switzerland; Assoc. Prof. Rohayu Che Omar from Universiti Tenaga Nasional, Malaysia; Prof. Cheon-Gyu Cho from Hanyang University; Dr. Julius Motuzas from the University of Queensland, Australia; and Prof. Riyanarto Sarno from Institut Teknologi Sepuluh Nopember, Indonesia.

This year, the 4

^th

International Conference on Science and Technology (ICST 2018) in IEEE track received 247 submissions from 12 countries throughout the world. All submitted papers went through a rigorous review process and each paper was evaluated by at least three independent reviewers in accordance with the standard blind review process. Based on the results of the rigorous review process, 161 papers have been selected, which constitute the acceptance rate of 65.18 %. The accepted and presented papers will be submitted to journals/proceedings that are indexed by Scopus: IEEE Xplore digital library, Trans Tech Publications, and E3S Web of Conferences. Quality selected papers from Material Science and Chemistry symposium will be published in Indonesian Journal of Chemistry.

The ICST 2018 could not become a reality without the support and assistance of many parties. In this

occasion, I would like to sincerely thank the Rector of Universitas Gadjah Mada, BPP officers and

staff, invited speakers, and all members of the Organizing Committee. I would also like to thank

authors, reviewers, all speakers, and session chairs for their support to ICST 2018.

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ORGANISING COMMITTEE

ICST 2018

Advisory Board Committee:

Dr.-Ing Hutomo Suryo Wasisto Prof. Dr.-Ing Azhar Zam

Assoc. Prof. Dr Rohayu Che Omar Prof. Dr. Ir. Fitri Yuli Zulkifli, ST., M.Sc Gerard Remijn, Ph.D

Dr. Ika Dewi Ana Dr. Widodo

Organizing Committee:

General Chair I Wayan Mustika

Co-Chair Kuwat Triyana

Secretary Ratih Fitria Putri

Publication Chair Tri Rini Nuringtyas

TPC Chair Roto

Treasury Chair

Mutiah Amini

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Publicity Chair Sunu Wibirama Andi Dharmawan Ahmad Kusumaadmaja Titis Wijayanto

Danang Wijaya

Trias Aditya Kurniawan Muhammad Budi Arifvianto

Local Organizing Chair Siti Uswatun Hasanah

Local Program Muhammad Rafieiy Suharman

Alif Yuni Alfiani Nurul Hasanah Akhsin Nurlayli Chusnun Hayati Sulis Setiowati

Rangga Kala Mahaswa

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T ABLE OF C ONTENTS

Computer and Information Technology

TS-001 A Comparative Study of Employee Churn Prediction Model ... 1 Andry Alamsyah (Telkom University, Indonesia); Nisrina Salma (Telkom University, Indonesia)

TS-002 A Conceptual Model for Information Security Risk Considering Business Process Perspective ... 5 Eva Hariyanti (Institut Teknologi Sepuluh Nopember, Indonesia); Arif Djunaidy (Institut Teknologi Sepuluh Nopember, Indonesia); Daniel Oranova Siahaan (Institut Teknologi Sepuluh Nopember, Indonesia)

TS-003 A Framework for Improving Recommendation in Adaptive Metacognitive Scaffolding ... 11 Indriana Hidayah (Universitas Gadjah Mada, Indonesia); Teguh Bharata Adji (Universitas Gadjah Mada, Indonesia); Noor Akhmad Setiawan (Universitas Gadjah Mada, Indonesia)

TS-004 A Persuasive Mobile Learning System for Informal Learning of Vegetable Farmers ... 16 Abdurrahman Iskandar (Bandung Institute of Technology, Indonesia); Yusep Rosmansyah (Bandung Institute of Technology, Indonesia); Albarda (Bandung Institute of Technology, Indonesia)

TS-005 A Review of Cloud Migration Strategies in the Developing Country ... 22 Ridi Ferdiana (Universitas Gadjah Mada, Indonesia); Guntur Dharma Putra (Universitas Gadjah Mada, Indonesia)

TS-006 A Review of Contrast Enhancement Techniques in Digital Image Processing ... 28 Dananjaya Ariateja (Universitas Gadjah Mada, Indonesia); Igi Ardiyanto (Universitas Gadjah Mada, Indonesia);

Indah Soesanti (Universitas Gadjah Mada, Indonesia)

TS-007 A Revisit on Blockchain-based Smart Contract Technology ... 34 Fengkie Junis, Faisal Prasetya, Farouq Lubay and Anny Sari (Universitas Gadjah Mada, Indonesia)

TS-008 A Study on Communication System in VANET ... 40 Ronald Adrian (Universitas Gadjah Mada, Indonesia); Selo Sulistyo (Universitas Gadjah Mada, Indonesia); I Wayan Mustika (Universitas Gadjah Mada, Indonesia)

TS-009 Adaptive Synthetic-Nominal (ADASYN-N) and Adaptive Synthetic-KNN (ADASYN-KNN) for Multiclass Imbalance Learning on Laboratory Test Data ... 46 Adhistya Erna Permanasari (Universitas Gadjah Mada, Indonesia); Yulia Ery Kurniawati (Universitas Gadjah Mada, Indonesia); Silmi Fauziati (Universitas Gadjah Mada, Indonesia)

TS-010 Adaptive Threshold Determination Based on Entropy in Active Contour Without Edge Method for Malaria Parasite Candidate Detection ... 52 Faza Maula Azif (Universitas Gadjah Mada, Indonesia); Hanung Adi Nugroho (Universitas Gadjah Mada, Indonesia); Sunu Wibirama (Universitas Gadjah Mada, Indonesia)

TS-011 An Improved Implementation of Discretization Algorithm for Markov Reward Models ... 58 Inez Fiona Sutanto (Universitas Gadjah Mada, Indonesia); Reza Pulungan (Universitas Gadjah Mada, Indonesia) TS-012 An Ontology Model for Clinical Pathway Audit ... 64

Dhomas Hatta Fudholi (Universitas Islam Indonesia, Indonesia); Lalu Mutawalli (Universitas Islam Indonesia, Indonesia)

TS-013 Analysis of Customers' Emotional Preferences Using Kansei Engineering and AHP ... 70 Ana Hadiana (Indonesian Institute of Sciences & Research Center for Informatics, Indonesia); Abdurrohman (STT Bandung, Indonesia)

TS-014 Analyzing Employee Voice Using Real-Time Feedback ... 75 Andry Alamsyah (Telkom University, Indonesia); Dessy Monica Ginting (Telkom University, Indonesia)

TS-015 Analyzing the Performance of Machine Learning Algorithms in Anomaly Network Intrusion Detection Systems ... 81 Pascal Maniriho (Institut Teknologi Sepuluh Nopember, Indonesia); Tohari Ahmad (Institut Teknologi Sepuluh Nopember, Indonesia)

TS-016 Context based-Tourism Recommender System: Towards Tourists' Context-Sensitive Preference Conceptual Model ... 87 Kusuma Adi Achmad (Universitas Gadjah Mada, Indonesia); Lukito Edi Nugroho (Universitas Gadjah Mada, Indonesia); Achmad Djunaedi (Universitas Gadjah Mada, Indonesia); Widyawan (Universitas Gadjah Mada, Indonesia)

TS-017 Data Preservation Process in Big Data Environment Using Open Archival Information System ... 93 Krisostomus Nova Rahmanto (Universitas Gadjah Mada, Indonesia); Mardhani Riasetiawan (Universitas Gadjah Mada, Indonesia)

TS-018 Design of Fuzzy Simulation for Determining the Duration of Traffic Light Based on Vehicle Density Level and Carbon Monoxide Level ... 98 Akhsin Nurlayli (Universitas Gadjah Mada, Indonesia); Intan Sulistyaningrum Sakkinah (Universitas Gadjah Mada, Indonesia); Febrianto Alqodri (Universitas Negeri Malang, Indonesia)

TS-019 Development of Kartini Reactor Code to Support Nuclear Training Center and Safety Analysis ... 104

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TS-076 Regression Analysis for Estimated Distance in Fingerprinting-Based WLAN Outdoor Localization System ... 407 Sutiyo Sutiyo (Universitas Gadjah Mada & Universitas Widya Dharma, Indonesia); Risanuri Hidayat (UGM, Indonesia); I Wayan Mustika and Sunarno Sunarno (Universitas Gadjah Mada, Indonesia)

TS-077 Resource Allocation in Cognitive Radio Networks Based on Modified Ant Colony Optimization ... 411 Muh. Bagus Satria (Universitas Gadjah Mada, Indonesia); I Wayan Mustika (Universitas Gadjah Mada, Indonesia); Widyawan (Universitas Gadjah Mada, Indonesia)

TS-078 Stock Control of Single Product Inventory System with Imperfect Delivery by Using Robust Linear Quadratic Regulator ... 416 Muhammad Fauzan Luthfi (Diponegoro University, Indonesia); Sutrisno (Diponegoro University, Indonesia);

Widowati (Diponegoro University, Indonesia)

TS-079 Waterfilling Power Control on Proportional Fair Algorithm to Maintain Fairness and Saves Power for MIMO-OFDMA 2X2 ... 420 Roy Cristianta Ginting (Telkom University, Indonesia); Arfianto Fahmi (Telkom University, Indonesia); Nur Andini (Telkom University, Indonesia); Vinsensius Sigit Widhi Prabowo (Telkom University, Indonesia)

Mechanical and Industrial Engineering

TS-080 3D Printing for Fashion Development ... 425 Djoko Kuswanto (Institut Teknologi Sepuluh Nopember, Indonesia); Nike Jhorda Iftira (Institut Teknologi Sepuluh Nopember, Indonesia); One Media Hapinesa (Institut Teknologi Sepuluh Nopember, Indonesia)

TS-081 A Gap Analysis on Implementation of Safety Management System in Airport: A Case Study ... 431 Susatyo N. W. Pramono (Diponegoro University, Indonesia); Muhammad Mujiya Ulkhaq (Diponegoro University, Indonesia); Ridwan Raharjo (Diponegoro University, Indonesia); Fahmi Ardi (Diponegoro University, Indonesia)

TS-082 A Proposed Model for Aligning Maintenance Strategy to Business Strategies in Engineering Asset Management ... 437 Winda Nur Cahyo (Universitas Islam Indonesia, Indonesia)

TS-083 A Study on the Visual Menu Design Using Pinch Gestures on Touchscreens ... 442 Cheng-Jhe Lin (National Taiwan University of Science and Technology, Taiwan); Titis Wijayanto (Universitas Gadjah Mada, Indonesia); Orchida Dianita (National Taiwan University of Science and Technology, Taiwan &

Universitas Gadjah Mada, Indonesia)

TS-084 Analysis of Air Traffic Conflict Geometry on Brain Activity ... 447 Fitri Trapsilawati (Universitas Gadjah Mada, Indonesia); Agustyandini Sekar Asih Nur Sari Nugraheni (Universitas Gadjah Mada, Indonesia); Muhammad Kusumawan Herliansyah (Universitas Gadjah Mada, Indonesia)

TS-085 Analysis of Fundamental Parameters on Zooming and Rotation Using Pinch Gestures ... 452 Cheng-Jhe Lin (National Taiwan University of Science and Technology, Taiwan); Titis Wijayanto (Universitas Gadjah Mada, Indonesia); Valentina Kunthi Bratadewi (National Taiwan University of Science and Technology, Taiwan & Universitas Gadjah Mada, Indones

TS-086 Analysis of Mental Workload in Human Resource Department ... 457 Sri Indrawati (Universitas Islam Indonesia, Indonesia); Suci Miranda (Universitas Islam Indonesia, Indonesia);

Winda Wulandari (Universitas Islam Indonesia, Indonesia)

TS-087 Basic Analysis of Logistics Cost for Indonesian Fishery Commodities ... 462 Kuncoro Harto Widodo (Universitas Gadjah Mada, Indonesia); Teny Sylvia (Universitas Gadjah Mada, Indonesia)

TS-088 Business Process Reengineering in a Sago Production Process ... 467 Taufiq Immawan (Universitas Islam Indonesia, Indonesia); Citra Indah Asmarawati (Universitas Islam Indonesia, Indonesia); Winda Nur Cahyo (Universitas Islam Indonesia, Indonesia)

TS-089 Design and Development of Wearable GPS Tracking Device by Applying the Design for Wearability Approach ... 472 Teddy Sjafrizal (Telkom University, Indonesia); Yahya Shomit Muhyiddin (Telkom University, Indonesia);

Andre Yana Wijaya (Telkom University, Indonesia); Rino Andias Anugraha (Telkom University, Indonesia)

TS-090 Design and Hydrodynamic Test Propeller of Mini Submarine with High Efficiency and Low Cavitation ... 478 Mahendra Indiaryanto and Nurwidhi Asrowibowo (Laboratory For Hydrodynamics Technology, Indonesia);

Navik Puryantini (Laboratory For Hydrodynamics Technology & BPPT,

TS-091 Effect of Inlet Pressure, Size and Wind Speed of an Evaporator on Amount of Refrigerant Charge and Performance of a Portable Propane Air Conditioner ... 483 Jeri Tangalajuk Siang (University of Southern Queensland, Australia & Universitas Atma Jaya Makassar, Indonesia); Ahmad Sharifian (University of Southern Queensland, Australia)

TS-092 Effects of Heat Treatments on Mechanical Properties, Specific Wear and Corrosion Rate of HQ 809 Steel for Machinery Components Application ... 489 Viktor Malau (Universitas Gadjah Mada, Indonesia); Wildan Ihsan Fauzi (Universitas Gadjah Mada, Indonesia) TS-093 Ergonomic Student Laptop Desk Design Using the TRIZ Method ... 495

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Analysis of Fundamental Parameters on Zooming and Rotation Using Pinch Gestures

Valentina Kunthi Bratadewi Department of Industrial Management National Taiwan University of Science

and Technology Taipei, Taiwan Department of Mechanical and

Industrial Engineering Universitas Gadjah Mada

Yogyakarta, Indonesia [email protected]

Cheng-Jhe Lin

Department of Industrial Management National Taiwan University of Science

and Technology Taipei, Taiwan [email protected]

Titis Wijayanto Department of Mechanical and

Industrial Engineering Universitas Gadjah Mada

Abstract—Previous research has not adequately investigated fundamental parameters, namely range of operation and preference, for zooming and rotation using pinch gestures on a multipoint touchscreen. This study obtained these fundamental parameters and introduced an innovative methodology to measure a comfort pinch. Thirteen right-handed participants were recruited to perform experimental tasks on a 23-inch touchscreen.

The data showed that the maximal and comfort pinch in zooming were around 600 and 375 in pixels (160 and 100 in millimeters) for both hands while the range of rotation was 148-degree clockwise and 115-degree counterclockwise using the dominant hand. This study also found that participants preferred a 42-degree clockwise inclination to initiate rotation. Using non-dominant hands decreased the range of rotation but not the span of the pinch.

Rotating with thumb fixed also significantly reduced the range of rotation. These findings could be used for guidelines in bimanual pinch manipulation, designing virtual rotary knobs, and other practical gesture operations.

Keywords—fundamental parameters, pinch and rotation gesture, comfort pinch, gesture operations

I. I

NTRODUCTION

A touchscreen is widely used for consumer electronic devices by a wide range of user and gained increasing popularity over the last decades due to its natural and convenient interaction [1]. Touchscreen technology has changed how people interact with their devices in comparison to traditional input devices [2]. Direct interaction using touch screen can be seen commonly in varied public settings, including airports, train stations, healthcare facilities, banks, public areas, food services, and retails [1] [3] [4]. It brings some advantages for varied usages and users. Users require less training than other input devices, such as keyboard, mouse, and trackball, to achieve the functions. Touchscreen also allows easy operations even by inexperience and disable users [1]. The touchscreen is one of the primary interfaces for mobile devices, such as smartphones and tablets, to escort various operations with multi-finger gestures [5].

Touchscreen input is growing with the emergence of gesture operation which considered as more effective and efficient

direct manipulation. Pinch, rotation, and translation are being the most common multi-touch gestures [6]. Many studies related to gesture operation have proposed considerations for application designer, but they conducted experiments by adapting the physical size to virtual size. There are knobs’ size data and design guidelines already, but the way of holding physical knob may not be applied to touch both fingers on the flat plane. Tactile experiences will help user for operating physical knobs, while this would be different in touchscreen operations. Conducting a study which back to the fundamental parameters for gesture operation onscreen will be necessary to enrich the gesture operation knowledge and will be useful for future studies.

The typical use of pinch and rotation gestures as two-touch gesture make them worth being studied. Pinch and rotation gesture, measured in distance and angle range, respectively, can be used for direct manipulations, such as menu selection and replace the function of the physical knob to the virtual knob.

Both gestures have been investigated in a few studies [6-9].

Hoggan

et al. [6] investigated direction, distance, angle, and

position of pinch gesture, whereas Hoggan et al. [7]

investigated direction, diameter, angle, and position of rotation gesture in completion time and ergonomic failures. The other studies used vertical-horizontal and diagonal starting angles for determining the effects of pinch gesture and compared these parameters to one-touch gesture, such as tapping and sliding [8][9]. Previous studies suggested some angles as one of the gesture's factors should be avoided because of higher error rates [6][8]. Furthermore, two-touch gesture requires greater joint excursions than a one-touch gesture and needs further investigation [9]. The two-touch gestures include zooming out (or pinching) and zooming in (or spreading) using thumb and index fingers, whereas the one-touch gestures include clicking (or tapping), swiping (or flicking), and dragging (or scrolling, panning, sliding) using index finger [8]. However, earlier studies already manipulated the distances and the angles of pinch and rotation gesture. Thus, the present study investigated the intuitive orientation angle and maximum pinch out to perform a pinch gesture.

2018 4th International Conference on Science and Technology (ICST), Yogyakarta, Indonesia

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Segmenting Retinal Vessels with a Multi-scale Modified Dolph-Chebyshev Type I Function

Matched Filter

Dhimas Arief Dharmawan and Boon Poh Ng

School of Electrical and Electronic Engineering

Nanyang Technological University

50 Nanyang Avenue, Singapore 639798

[email protected]

Abstract—In this paper, a new algorithm for retinal vessels segmentation is proposed. The algorithm is based on a multi- scale modified Dolph-Chebyshev type I function matched filter.

Fundus images from the DRIVE and STARE databases are utilized to evaluate the performance of the proposed algorithm.

Several performance indicators, such as specificity, sensitivity, and accuracy are used for performance evaluation. Experimental results show that for the DRIVE database, the results of the proposed algorithm are superior to those produced by all compared algorithms. When tested on pathological images from the STARE database, the proposed algorithm also performs better than all competing methods. This indicates that the proposed algorithm is suitable to be used in automatic retinal diseases diagnosis tools.

Index Terms—fundus image, modified Dolph-Chebyshev function, multi-scale matched filter, retinal vessels segmentation

I. I

NTRODUCTION

Retinal vessels segmentation plays an important role in automatic eye-related diseases diagnosis tools, such as diabetic retinopathy, hypertension, and vein occlusion [1]. In addition, retinal vessels segmentation is used as a preprocessing step in other fundus structures segmentation, i.e. the optical disc [2]

and foveal avascular zone [3]. Nevertheless, such segmentation is a challenging task due to variations in the width, orientation, and gray-level of vessels. Also, pathologies emerging in the surrounding of vessels are significant distractors in the vessels segmentation process.

Many algorithms for retinal vessels segmentation have been developed. They can be divided into two classes, the un- supervised and supervised approaches. In the former class, segmentation is performed with limited or without any prior knowledge. This class includes the template-based [1][4][5], iterative-based [6], and tracking-based [7] methods. On the other hand, segmentation in the supervised class is performed by feeding designed features representing vessels structures to supervised classifiers. Some representatives of this class are the works by [8] and [9].

To be used in automated eye-related diseases diagnosis tools, a retinal vessels segmentation algorithm has to achieve a satisfactory performance as well as is not prone to com- putational problems. However, the mentioned unsupervised methods above fail to manage desirable results while the supervised ones lead to heavy computational burdens. Thus, there is a need to develop a retinal vessels segmentation

algorithm that is able to achieve satisfactory results with an acceptable computational cost.

In this work, retinal vessels are detected using a new multi-scale matched filter derived from the modified Dolph- Chebyshev Type I (MDCF-I) function matched filter [1]. The multi-scale matched filter is applied on fundus images which are initially processed using the pre-processing procedure as described in [1]. Finally, to get the segmentation result, the matched filter response is processed using the post-processing technique as mentioned in [1].

The proposed algorithm is evaluated using fundus images from the DRIVE [8] and STARE [10] databases. Specifically, quantitative measures such as sensitivity

(Se), specificity (Sp), and accuracy(Acc)

are used for performance evaluation.

From the experiment, the proposed algorithm is able to achieve the best value for all measures among all competing methods, including the method in [9] which utilizes a convolutional neural network. The superior performance of the proposed algorithm on images with a lot of pathological signs from the STARE database indicates that the proposed algorithm is robust and suitable to be used in practical applications. The rest of the paper is organized as follows. Section II describes the proposed algorithm in details. Results from the experi- mental part of this work, comparison to other algorithms, and comprehensive discussion are provided in Section III. Finally, the research work is summarized in Section IV.

II. T

HE

M

ETHODOLOGY

A. The Multi-Scale MDCF-I Matched Filter

In a single-scale apprach, the MDCF-I matched filter was firstly proposed in [1] to detect retinal vessels candidates from fundus images. The MDCF-I matched filter kernel can be calculated as follows:

Wi,j(x, y) = (|cos

Mcos⁻¹[β_jcos(πuγ)] |, |Ai,j(x, y)| ≤1

|cosh[Mcosh⁻¹(β_j)]|, otherwise ,

(1)

W_i,j⁰ (x, y) =W_i,j(x, y)−m_i,j,

(2) where

Ai,j(x, y) =βjcos(πuγ),

(3)

βj= cosh[(1/M) cosh⁻¹(10^α^j)],

(4)

γ= 1

M+ 1,

(5)

α= logn coshh

(M −1) cosh⁻¹

secπωd,j

M io

,

(6)

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Semi-automated and manual methods for counting cells expressing p75 receptor in endometriotic lesions

1^st Dewanto Agung Dept. of Obtetrics and Gynecology,

Faculty of Medicine Universitas Gadjah Mada

4^th Gluekert Rudolf Dept.of Othorhinolaryngology Innsbruck Medical University

Innsbruck, Austria [email protected]

7^th Seeber Beata

Dept. of Gynecological Endocrinology and Reproductive Medicine Innsbruck Medical University

2^ndSun Xiaoyan

Dept. of Obstetrics and Gynecology XuanWu Hospital

Capital Medical University Beijing, China [email protected] 5^thSchrott-Fischer Anneliese Dept. of Othorhinolaryngology

Innsbruck Medical University Innsbruck, Austria [email protected]

3^rd Dudas Jozsef Dept.of Othorhinolaryngology Innsbruck Medical University

6^th Wildt Ludwig

Dept. of Gynecological Endocrinology and Reproductive Medicine Innsbruck Medical University

Abstract:—There are several limitations to assess immunohistochemical staining in the cells manually such as wide differences in the qualifications of researchers working with histological samples, infeasible to count every single cell, time consuming and experience needed. In order to bridge the gap between experienced and inexperienced researchers, save time, and optimize quantitative accuracy, automated and semi-automated methods for histologic tissue analyses have been introduced. These methods make the interpretation of protein expression in immunohistochemistry (IHC) more objective. One such tool is HistoQuest® software, a semi-automated cell analysis program (TissueGnostics GmbH, Austria) that can be used for counting the number of positive and negative-staining cells as well as for quantitatively assessing the relative staining intensity on a histological slide. The aim of this methodological study was to compare the manual method of IHC with a semi-automated method in evaluating endometriosis lesions with IHC stained with p75 receptor antibody. Methods: Two independent observers were selected, both are experienced gynecologists: Experienced and inexperienced observer. Each received a tutorial about Histoquest®

software and then independently set the parameters/tools in Histoquest® prior to independent slide interpretation. The images were arranged using TissueFaxs Plus system (Tissue-Gnostics®, Vienna, Austria) software with the same settings including exposure time and signal amplifications. Quantitative immunohistochemistry analysis was performed by using Histoquest® immunohistochemistry analysis software (TissueGnostics®, Vienna, Austria). Manual counting was done for comparison. Results: Histoquest software was able to identify nuclei stained with hematoxylin perfectly if the nucleus had a ´normal´

form which is not pale color in the center. If the nucleus appeared irregular with uneven color, the software failed to identify. The discrepancy between semi-automated cell counting and manual

counting by intra-experienced observer was smaller than the discrepancy in intra- inexperienced observer in overall result (95%

LoA -9.76 to 12.8 vs. 95% LoA -63.39 to 49.25). The two observers had very poor agreement. Conclusion: With IHC, cell counting using Histoquest software benefits the experienced observer/user since it gives highly consistent results compared to the manual method, with the additional benefits of being more objective and very much less time consuming. The software cannot be used by the inexperienced observer, as it cannot overcome that individual’s lack of knowledge and produces erroneous results.

Keywords—semi-automated counting, manual counting, immunohistochemistry, HistoQuest software, time saving methods

I. I

NTRODUCTION

Immunohistochemistry (IHC), conceptualized and first implemented by Coons in 1941 (Coons, Creech, and Jones, 1941) refers to the process of detecting antigens in tissue sections by using specifically binding antibodies. Due to labeling of the antibody, a specific color can be observed upon antibody-antigen binding and the amount of antigen present can be quantified. IHC has an important function in biomolecular research as well as many clinical applications such as its use as a diagnostic tool in neoplasms, as predictive and prognostic markers in certain diseases [1] and to predict drug efficacy or resistance [2]

Traditionally, assessment of tissues following IHC has been performed manually, by a pathologist (or trained researcher), assessing the location and degree of staining. There are several limitations to this practice. First, there are wide differences in the qualifications of researchers working with histological

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An output feedback controller in the presence of measurement error

Janghoon Yang Dept. of New Media Seoul Media Institute of Technology

Seoul, South Korea [email protected]

Abstract—In the presence of measurement error, a conventional approach to feedback control is to exploit state feedback control and observer simultaneously. However, a large gain in observer often has a tradeoff between tracking error and estimation error. Thus, static output feedback controllers to control a system directly without the observer are proposed. To this end, linear matrix inequality (LMI) was introduced to include a signal to noise ratio (SNR) type constraint efficiently in the development of the controller.

Three different static output feedback controllers from using matrix inequality and some approximation are developed.

Numerical simulation shows that the method with the smallest matrix dimension provides the best performance in terms of finding the stabilizing the stabilizing controller, which implies that the proposed design may be sensitive to numerical errors.

Keywords— Output feedback control, robustness, stability, linear matrix inequality, Measurement error

I. I

NTRODUCTION

The design of output feedback controller starts with non- convex problem formulation. Thus, a large number of sufficient conditions [1][2] or sufficient and necessary conditions [3][2] were proposed. There are also numerous approaches to develop static output feedback stabilization.

Among them, a method exploiting Riccati equation [3], convex optimization method [4], and direction matrix inversion method [5] can be simple enough to be easily articulated. However, applicability to a complex system or a system with various constraints can be limited. An alternative can be a bilinear matrix inequality (BMI) [6]. It can be easily fit into various control problems. However, its computational complexity prohibits it from being applied to a complex problem. However, none of them are powerful enough to be applicable universally under various conditions, constraints, or objectives. It is also argued that existing convex approach based on sufficient conditions are often restrictive [1].

In the presence of measurement error, output feedback controllers exploiting observes from separation principles have been studied actively. An output feedback controller exploiting high-gain observer for nonlinear systems was proposed to estimate states accurately [1][2]. However it shows tradeoff between tracking error and state estimation error. A passivity-base controller for the attitude tracking with the quaternion kinematics was shown to guarantee the

boundedness of the closed-loop trajectories in the presence of both measurement errors and external disturbance [3]. An output feedback nonlinear model predictive control (NMPC) schemes which combines state feedback NMPC schemes with high-gain observers was shown to be robust to the bounded input uncertainties [5]. A dynamic output feedback controller following linear quadratic principle was developed for switched linear systems [7]. It was shown to stabilize the system in the presence of estimation error through applications to power converters. Output feedback controllers were also studied for specific form. An event-triggered output feedback controller was developed for nonlinear systems in terms of input-to-state stabilization [4]. A model-free sliding mode controller using time-varying smoothing boundary layer was designed from Lyapunov stability theorem to deal with system uncertainties [6].

Combining state-feedback control with observer may work well in some cases. However, it involves with development both the state-feedback controller and the observer. Thus, one may develop an output feedback controller which directly deals with measurement errors.

There are several different methods of synthesizing the controller such as Riccati equation based method [8], a convex optimization based method [9], and a method using a direct matrix inversion [10]. Even though they are very useful and powerful method for some specific cases, they are limited in extending to a robust controller to measurement errors.

Many control problems are formulated in terms of bilinear matrix inequality (BMI). To overcome the computation issues with BMI, linear matrix inequality (LMI) is often introduced through manipulating BMI in a proper way to reduce computational complexity. Output feedback controllers based on LMI have been shown to be efficient and practically viable schemes [11][12]. They can be easily modified with different constraints. Thus, we develop a robust output feedback controller which deals with measurement error directly without involving observers.

In this research, exploiting LMI, we propose three output feedback controllers and assess their performance in the presence of measurement error with a constraint that the power of error is limited by the weighted power of states which can be considered as signal to noise (SNR) constraint.

Identitas Prosiding : a. Nama Prosiding : 2018 4th International Conference on

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Judul Prosiding (Artikel) : Stock Control of Single Product Inventory System with Imperfect Delivery by Using Robust Linear Quadratic Regulator

Nama/Jumlah Penulis : Muhammad Fauzan Luthfi, Sutrisno, Widowati/ 3 orang Status Pengusul : penulis ke- 3

Identitas Prosiding : a. Nama Prosiding : 2018 4th International Conference on

Science and Technology (ICST)

b. Nomor ISBN : Electronic ISBN: 978-1-5386-5813-0

USB ISBN: 978-1-5386-5812-3Print on

Demand(PoD) ISBN: 978-1-5386-5814-7

c. Volume, nomor, bulan tahun : No.18233781, 15 Nov 2018

d. Penerbit : IEEE

e. DOI artikel (jika ada) : 10.1109/ICSTC.2018.8528682 f. Alamat web Prosiding :

URL PROSIDING : https://ieeexplore.ieee.org/xpl/conhome/8510778/proceeding URL ARTIKEL : https://ieeexplore.ieee.org/document/8528682

g. Terindeks di Scopus : SJR 0.129 (2018)

https://www.scimagojr.com/journalsearch.php?q=21100805784&tip=sid&clean=0

Kategori Publikasi Prosiding : Prosiding Internasional Terindeks (beri pada kategori yang tepat) Prosiding Internasional

Prosiding Nasional

Hasil Penilaian Peer Review : Komponen Yang Dinilai

Nilai Reviewer

Nilai Rata-rata Reviewer I Reviewer II

a. Kelengkapan unsur isi prosiding (10%) 2.25 2.5 2.37

b. Ruang lingkup dan kedalaman pembahasan (30%) 7.12 5.83 6.47

c. Kecukupan dan kemutahiran data/informasi dan metodologi (30%)

7.08

5.83

6.45 d. Kelengkapan unsur dan kualitas terbitan/prosiding

(30%)

6.35

5.83

6.09

Total = (100%) 22.8 19.99 21.38

Nilai Pengusul = 40% x1/2 4.56 3.99 4.27

Semarang, April 2020

Reviewer 2 Reviewer 1

Prof. Dr. St. Budi Waluya, M.Si Prof. Dr. Basuki Widodo, M.Sc

NIP. 196809071993031002 NIP. 19650506 1989031002

Unit kerja : Matematika FMIPA UNNES Unit kerja : Matematika FSAD ITS

LEMBAR

HASIL PENILAIAN SEJAWAT SEBIDANG ATAU PEER REVIEW KARYA ILMIAH : PROSIDING

Judul Prosiding (Artikel) : Stock Control of Single Product Inventory System with Imperfect Delivery by Using Robust Linear Quadratic Regulator

Nama/Jumlah Penulis : Muhammad Fauzan Luthfi, Sutrisno, Widowati/ 3 orang Status Pengusul : penulis ke- 3

Identitas Prosiding : a. Nama Prosiding : 2018 4th International Conference on

Science and Technology (ICST)

b. Nomor ISBN : Electronic ISBN: 978-1-5386-5813-0

USB ISBN: 978-1-5386-5812-3Print on

Demand(PoD) ISBN: 978-1-5386-5814-7

c. Volume, nomor, bulan tahun : No.18233781, 15 Nov 2018

d. Penerbit : IEEE

e. DOI artikel (jika ada) : 10.1109/ICSTC.2018.8528682 f. Alamat web Prosiding :

URL PROSIDING : https://ieeexplore.ieee.org/xpl/conhome/8510778/proceeding URL ARTIKEL : https://ieeexplore.ieee.org/document/8528682

g. Terindeks di Scopus : SJR 0.129 (2018)

https://www.scimagojr.com/journalsearch.php?q=21100805784&tip=sid&clean=0 Kategori Publikasi Prosiding : Prosiding Internasional Terindeks

(beri pada kategori yang tepat) Prosiding Internasional Prosiding Nasional

Hasil Penilaian Peer Review :

Komponen Yang Dinilai

Nilai Maksimal Prosiding

Nilai Akhir Yang Diperoleh Prosiding

Internasional Terindeks

Prosiding Internasional

Prosiding Nasional

a. Kelengkapan unsur isi prosiding (10%) 2,50 2.25

b. Ruang lingkup dan kedalaman pembahasan (30%)

7,50 7.12

c. Kecukupan dan kemutahiran

data/informasi dan metodologi (30%)

7,50 7.08

d. Kelengkapan unsur dan kualitas terbitan/prosiding (30%)

7,50 6.35

Total = (100%) 25,00 22.8

Nilai Pengusul = 40% x1/2x 22.8=4.56 Catatan Penilaian artikel oleh Reviewer :

1. Kesesuaian dan kelengkapan unsur isi prosiding :

2. Ruang lingkup dan kedalaman pembahasan:

3. Kecukupan dan kemutakhiran data/informasi dan metodologi :

Informasi yang disajikan cukup baru dan hasil yang diperoleh memuat substansi aplikasi yang penting.

Sumber gagasan penulis untuk artikel ini banyak, komprehensif dan update, yang lebih sepuluh tahun terakhir

hanya 4 paper dari 13 sumber yang dirujuk. Methodologi belum disebutkan dalam artikel ini.

4. Kelengkapan unsur dan kualitas terbitan:

Surabaya, 18 April 2020 Reviewer 1

Prof. Dr. Basuki Widodo, M.Sc

a. Kelengkapan unsur isi prosiding (10%) 2.25 2.5 ^2.37

b. Ruang lingkup dan kedalaman pembahasan (30%) 7.12 5.83 ^6.47

Total = (100%) 22.8 19.99 ^21.38