Indonesia Conference Directory

Corresponding Author
Intan Sari Rufiana

Institutions
Mathematics Education, Universitas Negeri Malang, East Java, Indonesia
intan.sari.1603119[at]students.um.ac.id

Abstract
Statistical reasoning is a major requirement in the era of big data. Therefore, there is a need to conduct a research about this statistical reasoning. One important study in statistical reasoning is the levels of statistical reasoning. The levels of statistical reasoning are based on the construction of a conceptual framework. This research aimed to describe seven levels of students- statistical reasoning in predicting data. The subjects of this research were 40 students of second semester taken from two different classes. This was conducted in order to fulfill all levels of reasoning. At first, the subjects were given a test, and then 7 students were selected to be interviewed related to the levels of statistical reasoning respectively. Data triangulation was done to maintain the validity and reliability of the data generated. There are seven levels of statistical reasoning in predicting data, namely, the levels of pre-idiosyncratic, idiosyncratic, verbal, transitional 1, procedural, transitional 2, and integrated processes. These seven levels can be used as a consideration in compiling assessment rubrics in statistical material. The assessment should not only focus on students skill in calculating and ability in problem solving but also emphasize on the aspect of reasoning.

Keywords
statistical reasoning, prediction tasks, descriptive statistics

Topic
Mathematics Education

Link: https://ifory.id/abstract/wEhKxXN4LzMQ

Corresponding Author
Suci Hardianti

Institutions
Sriwijaya University

Abstract
One of the issues in mathematics education was many math problems requiring reasoning skills were included in the National Examination. This was part of the attempts to gradually adjust Indonesian standards to international standards such as PISA. The purpose of this article was to assess the potential effects of PISA-type math problem on students- math literacy abilities. The method used in this article was design research type development studies which consists of 2 stages, preliminary and formative evaluation. The preliminary stage consists of analysis and design. In the formative evaluation consists of self evaluations, expert reviews, one-to-one, small groups and field tests. The potential effect of the problem was indicated by the results in the field test stage. The mathematical literacy abilities that emerge were communication skills, mathematics, representation, reasoning and arguments, choosing strategies in solving problems and the ability to use language, symbolic, formal and technical operations. Communication skills dominate over other mathematical literacy abilities.

Keywords
Math literacy; design research; PISA

Topic
Mathematics Education

Link: https://ifory.id/abstract/wdMqk72vf3Jp

Corresponding Author
Muhammad Ghufron

Institutions
(a) Department of Physics, Faculty of Mathematics and Natural Science, University of Brawijaya, Malang, East Java, Indonesia 65145
*mghufron[at]ub.ac.id
(b) Graduated Student, Department of Physics, Faculty of Mathematisc and Natural Science, University of Brawijaya
(c) Program Studi Pendidikan Fisika, Universitas Kanjuruhan Malang, Malang 65148

Abstract
Electrolyte concentration is one of the important parameters on Lead-Acid Battery (LAB) outcome. Lead-acid battery has been made with static and dynamic electrolyte treatment where 4 variations of electrolyte concentration (20%, 30%, 40%, and 50%) and 1A current applied in the system during charging-discharging test to analyze the relationship of the electrolyte concentration to the battery characteristic and compare static and dynamic lead-acid battery performance. The experiment results that the capacity of dynamic lead-acid battery increases along with the higher concentration from 20% to 40% but decrease at 50% compared to 40% for 3 first cycle charge-discharge test. The static lead-acid battery unwork at concentration 20% and show the increases capacity along with increases concentration. In capacity and efficiency point of view, dynamic lead-acid show better performance compares to a static lead-acid battery. Both electrodes show that there is a new phase form during the discharge process.

Keywords
Lead-Acid; Energy Storage; Electrolyte Concentration; Capacity; Battery

Topic
Energy Storage

Link: https://ifory.id/abstract/CUJYDxQ7TL8R

Corresponding Author
Poppy Puspitasari

Institutions
Politeknik Manufaktur Bandung, Universitas Negeri Malang

Abstract
Any defect in casting products should be avoided at all cost, and treatment must be done as early as possible. One alternative to produce a sound-casting product is using simulation application such as SOLIDCast to analyze a defect, which this research used to analyze the shrinkage defect in Lifter Cooler Big made from SCH 11 material. This research was conducted at the Foundry Laboratory, Bandung Polytechnic of Manufacturing and aimed to investigate the main causal of shrinkage in Lifter Cooler Big. The first step of the research was to analyze the shrinkage defect on three Lifter Cooler Big products. It was followed by the visual inspection test, Liquid Penetrant Testing (LPT), and Scanning Electron Microscope (SEM) test to verify the defect. Next was to calibrate the SOLIDCast simulation application to obtain material and sand parameters matching the real products condition. Using material density analysis from SOLIDCast simulation, a defect prediction was obtained similarly to the shrinkage on the samples. The result stated that the sand condition was in 1.5 W/m&

Keywords
Shrinkage, SCH 11, Lifter Cooler Big, SOLIDCast Simulation software

Topic
Smart materials

Link: https://ifory.id/abstract/qnHPrWTXUdVB

Corresponding Author
Robi Kurniawan

Institutions
1 Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, East Java, Indonesia
2 Centre of Advanced Materials for Renewable Energy, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145 East Java, Indonesia
3 Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore 117603, Singapore

a)Corresponding author: robi.kurniawan.fmipa[at]um.ac.id

Abstract
The main keys in developing solar cells are their optical absorption and electron transfer (optical conductivity) levels. To enhance these two characteristics, an electron transport layer (ETL) was added to the solar cell, which is used to prevent electron recombination. Zinc oxide nanorod (ZnO NR) is one of the potential ETL candidates in the new generation of solar cells due to its high electron transfer. To optimize the use of ZnO NR in new generation solar cells, we combine NR ZnO with graphene, into a hybrid ZnO NR/graphene system. Optical absorption and conductivity of hybrid ZnO NR/graphene were studied using spectroscopic ellipsometry. A dramatic change in ellipsometry spectra has been observed, which increases with a higher number of graphene in the hybrid systems. Furthermore, the role of graphene on the optical absorption and conductivity of hybrid systems was investigated through fittings by applying the effective medium approximation (EMA) model. This study will provide a good understanding of optical absorption and optical conductivity of hybrid ZnO NR/graphene, which is an important key in the development of high-performance new generation solar cells.

Keywords
Hybrid ZnO NR/graphene, spectroscopic ellipsometry, optical absorption, optical conductivity

Topic
Smart materials

Link: https://ifory.id/abstract/gXP4hJuWQR3Y

Corresponding Author
Ni Putu Kamaryati

Institutions
a) Institute of Technology and Health (ITEKES) Bali
*kamaryati.stikesbali[at]gmail.com
b) Sanglah Hospital, Bali

Abstract
Quality of life (QOL) is an important health outcome indicator in oncology. Many factors were related to QOL, such as fatigue, general health perception, and social support. The study focused on four domains of World Health Organization Quality of Life-Bref (WHOQOL-Bref). The revised Wilson and Cleary Model for Health Related Quality of Life (HRQOL) was used to guide the study. The purpose of the study was to examine the association among fatigue, general health perception, social support, and quality of life in cancer patients undergoing chemotherapy in Sanglah Hospital, Bali. The study was a cross-sectional design involving 119 cancer patients by convenience sampling in Sanglah Hospital, Bali. Each participant was interviewed according to structured questionnaires consisting of the demographic information, Visual Analog Scale to measure fatigue, Self-Rated Health, Social Support Survey, and WHOQOL-Bref. Data were analyzed by Spearman-s Rank correlation coefficient. Main results found that fatigue was negatively and significantly associated with physical, psychological, social, and environment domain of QoL (r = -.34; r = -.43; r = -.34; r = -.29, p < .05, respectively). General health perception was positively and significantly associated with physical, psychological, and environment domain of QoL (r =.19; r = .25; r = .19, p < .05, respectively), and social support was positively and significantly associated with psychological and social domain of QOL (r =.25 and r = .22, p < .05). These findings indicate the necessity for health professionals to take these factors into account when treating patients with cancer undergoing chemotherapy to enhance the QOL of patients

Keywords
quality of life; cancer; fatigue; general health perception; social support

Topic
Healthcare Practice and Services

Link: https://ifory.id/abstract/DhqzaLyJnHEF

Corresponding Author
Vivi Retno Intening

Institutions
STIKES Bethesda Yakkum Yogyakarta

Abstract
Background : World Health Organization (WHO) has made a grand design on collaborative character building in a formal education in the form of interprofessional education. Interprofessional Education (IPE) is a learning implementation participated by two or more different profession to improve quality of collaboration and service and the implementation can be done in all learning stage academically or clinically (WHO, 2010). There is a crucial need of learning model design of IPE that can build positive perception in health profession students. Student-s condition that is very heterogen brings up different perception and learning experience about IPE. It is important to be deeply explored as data and input of the upcoming IPE program. Objective : To know the perception and learning experience of medical, nursing, and pharmacy students about IPE. Method : This was a qualitative survey research with deep interview. It applied phenomenological qualitative approach. The data was analyzed by coding, categorizing, and deciding the theme of interview result. Result : There were 12 IPE program participants from three different study programs, i.e. medical, nursing, and pharmacy as the respondents of this research. The interview result shows 35 categories, and four themes. Conclusion : IPE participants- perception states IPE is important to be applied in academic stage and the implementation has strengths and weaknesses. While the learning experience states 1) IPE program is important in academic area with some strengths and weaknesses, 2) Nursing students can re-explain the proses of IPE learning in detail, 3) IPE experience encourages self evaluation and motivation, and 4) after joining IPE learning program, nursing students experience some changes in knowledge, attitude, and skills.

Keywords
perception, learning experience, interprofessional education

Topic
Education and Learning

Link: https://ifory.id/abstract/HYkVCFKRhZWv

Corresponding Author
Olin Lintang Pribadi

Institutions
Airlangga University

Abstract
This study aims to know the implementation of integrated marketing communication for special local food products by Micro, Small and Medium Enterprises (UMKM) in Lumpur Village, Gresik Sub-district, Gresik Regency. The study used three informants as research objects. They are from the owner of special local food Micro, Small and Medium Enterprises in Lumpur Village and supporting informants such as Lumpur village officials, cooperative agency, UMKM, industry and trade,and consumers. This study used descriptive qualitative method with primary data from the subject and the data analysis uses Miles and Huberman model. The result of the study explains the implementation of integrated marketing communication by special local food UMKM in Lumpur Village Gresik District Gresik Regency uses advertising strategy, sales promotion, events and experiences, public relations, direct marketing, and word of mouth. The effective strategies of integrated marketing communication for practitioners of special local food UMKM are the advertising and word of mouth strategy.

Keywords
integrated marketing communication, micro, small and medium enterprise, Lumpur village

Topic
Environmental Economics

Link: https://ifory.id/abstract/NpBUA9a4ck2b

Corresponding Author
Ni Made Sukartini

Institutions
1. FEB Unair
2. Magister Ilmu Ekonomi Student and BPS Provinsi Lampung

Abstract
This study examines the determinants of individual characteristics to the effort for efficiently consuming clean water and electricity, as well as doing sort on domestic waste. This study applies cross sectional data on Survei Perilaku Peduli Lingkungan Hidup (SPPLH) 2013 or Survey for Behavioural Awareness on Environment. Logistic regression is chosen as main analysis. This study finds that individual awareness is positively associated with age and educational level. Awareness is negatively associated with male and respondent who reside in the urban areas. Furthermore, it is found that respondent with better income aware more on saving electricity rather than saving clean water. Better available information also improve respondent awareness on efficient consumption level for better environmental quality. Policy relevant with this finding is encouraging community awareness through role model such as community leader and scholar. Intensity of spreading information as well as pricing policy are also relevant for improving community awareness.

Keywords
Environmental Awareness, SPPLH, Indonesia

Topic
Environmental Awareness and Education

Link: https://ifory.id/abstract/BcE6madjZekf

Corresponding Author
Aulialula Maliuna Amanah

Institutions
a) Environmental Engineering, Airlangga University
Jalan Mulyorejo, Surabaya 60115, Indonesia
* aulialula.maliuna.amanah-2016[at]fst.unair.ac.id
b) Economy, Airlangga University

Abstract
Noise is an unwanted sound from a business or activity at a certain level and time that can cause disruption to human health and environmental comfort. The noise level is divided into 4 zones, zone A with a range of 35-45 dB, zone B with a range of 45-55 dB, zone C with a range of 50-60 dB, and zone D with a range of 60-70 dB. The noise source is divided into 2, that is static such as a factory or machine, and dynamic like a vehicle. The impact that can be obtained by the listener can be noise adaptation, physiological disorders, psychological disorders, communication disorders and the influence of hearing function. Noise measurement can be done using sound level meter and hand counter. This research was carried out on Raya Merr Street, Surabaya with latitude 7°1554.24"S and longitude 112°4657.73"T. The study was held for 10x4 minutes or 4 series with an interval of 10 seconds. From that we get 240 data and can find the sound pressure level of 10% and 90% (SPL10 and SPL90) with the data taken is the lower bound data. SPL10 is 75.5 and SPL90 is 65.5. The calculation results a noise value is 75.5 dB. The number of vehicles on the highway affects the value of noise intensity with a correlation value of 65.51% and inversely proportional. The more number of vehicles, the lower the value of noise intensity.

Keywords
Noise; Surabaya; Sound Level Meter; Traffic Noise Index

Topic
Noise Pollution

Link: https://ifory.id/abstract/qJtQEVweAhrf

Corresponding Author
Nico Alexander Vizano

Institutions
Fakultas Ekonomi dan Bisnis, Universitas Mercu Buana Jakarta

Abstract
This study aims to examine and analyze the impact of human capital investment, leadership and strategic orientation on company performance. The research method used in this research is descriptive method. The object of this study is all employees of PT Plaza Indonesia Realty, Tbk with a population of 77 people. The sampling technique used a sample saturated with a sample size of 77 people. The approach used in this research is Structural Equation Model (SEM) with Smart-PLS analysis. The results of this study showed that human capital has positive and insignificant effect on performance. Leadership positively and insignificant to performance. Orientation Strategy has positive and insignificant effect on performance.

Keywords
Human Capital, Human Capital Investment, Leadership, Strategic Orientation, Strategy, Corporate Performance, Performance

Topic
Human Resource Management

Link: https://ifory.id/abstract/pcGZn2JumVw8

Corresponding Author
Plato Martuani Siregar

Institutions
a) Meteorology Department, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*paltirajass[at]gmail.com
b) Meteorology Department, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*diemaoctaviani[at]students.itb.ac.id

Abstract
Kecamatan Gununghalu Kabupaten Bandung Barat merupakan wilayah yang menjadi salah satu penghasil komoditas tanaman kopi, serai wangi, dan aren dengan kondisi curah hujan sekitar 2500-3000 mm/tahun. Meskipun memiliki wilayah yang luas, Gununghalu juga memiliki struktur tanah dengan kemiringan di bawah 40% seluas 2.584 Ha yang belum dimanfaatkan secara maksimal. Petani disekitar wilayah ini sebagian masih merasa lahan satu hektarnya kurang ekonomik karena keuntungan hanya menghasilkan Rp 7 juta/tahun,jadi sangat penting dilakukan penelitian metoda-metoda skenario pengelolaan lahan melibatkan perhitungan parameter meteorologi dalam proses tumbuh,kembang dan produksi dengan maksimal agar diperoleh keuntung yang lebih besar. Pengerjaan dimulai dari pengolahan data curah hujan dan suhu permukaan untuk menghasilkan tabel kesesuaian iklim. Lalu data topografi dan jenis tanah diproses untuk menghasilkan tabel kesesuaian lahan. Kedua tabel tersebut digabungkan menggunakan metode pengharkatan sehingga akan menghasilkan peta kesesuaian lahan dan iklim yang baru. Untuk koreksi hasil,dipakai metoda citra satelit landsat 8 untuk memeriksa perhitungan produktivitas tanaman di lapangan yang sebenarnya dan hasil ini akan dimanfaatkan untuk rancangan skenario pengelolaan lahan,sementara keekonomian komoditi dihitung menggunakan manfaat langsung. Wilayah ini memiliki tipe iklim B berdasarkan iklim Schmidt-Fergusson,iklimnya dominan dikendalikan antara lain: monsun, MJO, ENSO dan siklon tropis. Selain itu, Kecamatan Gununghalu sendiri memiliki kelas kesesuaian lahan dan iklim S1(2942 Ha) dan S2 (8370 Ha) untuk tanaman lemon, serai wangi, dan aren. Dari keempat skenario pengelolaan lahan yang dilakukan dengan metoda manfaat langsung diperoleh hasil bahwa jeruk lemon memiliki nilai ekonomi Rp 480 juta per hektar/tahun, lalu setelah itu tanaman aren Rp 100 juta pertahun dan yang terakhir serai wangi Rp 10 juta pertahun.

Keywords
Gununghalu, curah hujan,lahan, iklim, keekonomian

Topic
Kebumian

Link: https://ifory.id/abstract/kgvpT4rbycWY

Corresponding Author
DANY WILDANY

Institutions
a) Program Studi Fisika Fakultas MIPA Institut Teknologi Bandung Jalan Ganesha 10, Bandung 40132, Indonesia
*danyspq[at]gmail.com
b) Program Studi Mekatronika Politeknik Manufaktur Bandung Jalan Kanayakan 21, Bandung 40135, Indonesia
c) Program Studi Fisika Fakultas MIPA Institut Teknologi Bandung Jalan Ganesha 10, Bandung 40132, Indonesia
**hd.hendro[at]gmail.com

Abstract
Rancang bangun alat ukur konduktivitas listrik arus AC berbasis mikrokontroler arduino untuk mengukur kualitas susu telah dibuat. Desain ini menggunakan empat elektroda dengan arus AC pada frekuensi 50 Hz yang berasal dari mikrokontroler arduino Uno. Sensor arus AC dihubungkan diantara mikrokontroler dan salah satu elektroda ujung. Empat probe yang disusun sejajar dicelupkan ke dalam sampel susu. Arus bolak-balik dari mikrokontroler diterapkan pada dua elektroda ujung sedangkan dua elektroda lainnya yang berada di tengah berfungsi sebagai voltmeter AC. Nilai arus dan tegangan listrik ini digunakan untuk menghitung besar konduktivitas listrik susu. Pengukuran kualitas susu dilakukan selama 6 jam di suhu ruangan dalam keadaan sampel susu terpapar sinar ultra violet di dalam wadah sampel yang terisolasi. Nilai konduktivitas listrik susu di bawah 0.460 S/m serta adanya perubahan pH menunjukan susu mengalami degradasi kualitas.

Keywords
Konduktivitas; AC; Susu; Elektroda; Ultra violet

Topic
Instrumentasi

Link: https://ifory.id/abstract/EvQc4UgLz86H

Corresponding Author
Rendi Ermansyah Putra

Institutions
1 Magister Teknik Air Tanah
Fakultas Ilmu dan Teknologi Kebumian, Institut Teknologi Bandung,
Jl. Ganesha no. 10 Bandung, Indonesia, 40132


2 Kelompok Keilmuan Geologi terapan
Fakultas Ilmu dan Teknologi Kebumian, Institut Teknologi Bandung,
Jl. Ganesha no. 10 Bandung, Indonesia, 40132


a) rendi.ermansyah[at]gmail.com
b) erwin[at]fitb.itb.ac.id

Abstract
Oksigen terlarut / Dissolve Oxygen (DO) merupakan salah satu parameter yang sangat penting dalam analisis kualitas air permukaan maupun air tanah. Nilai DO menunjukkan jumlah kadar oksigen (O2) yang tersedia di dalam air. Semakin besar nilai DO di dalam air, maka semakin baik pula kualitas air tersebut. Untuk nilai DO yang rendah, biasanya terdapat pada air yang tercemar. Nilai DO juga menunjukan jumlah biota air seperti ikan dan mikroorganisme yang hidup di dalamnya. Air Sungai Cikapundung pada segmen cihampelas memiliki nilai DO 4,9 – 7,7 mg/l diukur pada satu lokasi secara time series selama 10 hari dari tanggal 9 – 11 Juli 2018 dan 30 Juli 2018 – 5 Agustus 2018 mulai pukul 10.00 – 16.00 WIB. Grafik nilai DO bervariasi setiap hari, secara umum semakin sore semakin menurun. Pada hari Jumat hingga hari Ahad terjadi anomali dari grafik DO yang diukur. Hal ini kemungkinan disebabkan aktivitas manusia yang lebih intensif di Hari Jumat – Ahad mengelontorkan kotoran ke Sungai Cikapundung.

Keywords
DO, Sungai Cikapundung, Time Series

Topic
Lain-lain

Link: https://ifory.id/abstract/DUc3LVR2NgZM

Corresponding Author
Cherly Salawane

Institutions
1. Fakultas Keguruan dan Ilmu Pendidikan, Universitas Halmahera Jalan Raya Wari Ino Tobelo, Halmahera Utara, Indonesia, 97762
Dan
Program Studi Pendidikan IPA, Program Pascasarjana Universitas Negeri Semarang
Jl. Kelud Utara III Semarang, Indonesia 50237

2.Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang
Kampus Sekaran Gunungpati Semarang, Indonesia 50229

a)salawanecherly[at]yahoo.co.id
b)supriyadi[at]gmail.unnes.ac.id
c)rusilowati[at]yahoo.com
d)dyahrini36[at]gmail.com
e)pmarwoto[at]yahoo.com

Abstract
Ethnoscience sebagai sistem pengetahuan dan kognisi yang khas sebagai pemberian dari sebuah kebudayaan. Ethnoscience mengkaji perilaku manusia terhadap lingkungan berupa benda yang dipandang melalui aspek budaya dan persepsi masyarakat lokal. Bagi masyarakat yang hidup disekitar lereng Gunung Merapi, bahaya letusan Merapi bukan merupakan suatu ancaman serius yang harus dikhawatirkan malahan letusan Merapi dianggap sebagai suatu anugerah. Sampai saat ini masyarakat masih percaya dengan mitos Gunung Merapi. Pendekatan ethnoscience digunakan untuk mitigasi bencana sebagai langkah dalam meminimalkan resiko, akibat dari aktivitas vulkanik Gunung Merapi. Tujuan dari penelitian ini adalah untuk menganalisis sains lokal dan sains ilmiah masyarakat terhadap bahaya Gunung Merapi. Jenis penelitian ini adalah penelitian kualitatif dimana pengumpulan data dilakukan dengan cara observasi dan wawancara dengan masyarakat yang berada di lereng Gunung Merapi. Kepercayaan terhadap penunggu Merapi masih sangat tinggi, dimana masyarakat masih melakukan upacara-upacara ritual setiap tahun sebagai bentuk penyembahan terhadap penguasa Gunung Merapi. Hasil penelitian menunjukan bahwa ehtnoscience atau sains asli masyarakat memiliki dampak yang lebih besar dalam memitigasi bencana jika dibandingkan dengan sains ilmiah.

Keywords
Ethnoscience, Gunung Merapi, Mitigasi

Topic
Pembelajaran

Link: https://ifory.id/abstract/bVJ7HREgp4ZD

Corresponding Author
valentinus putra

Institutions
Politeknik STTT Bandung

Abstract
pada penelitian ini telah dikaji dan disimulasikan suatu bentuk pemodelan mekanika dan statistik berbasis matrix multivarian untuk memprediksi ketidakrataan benang dan tenacity menggunakan parameter nomor benang serta kecepatan front roll di mesin ring spinning. pada artikel ini didapatkan bahwa hasil pemodelan dan simulasi menggunakan baik secara mekanika dan matrix multivarian memperlihatkan tingkat korelasi yang sangat baik antara parameter input terhadap parameter output.

Keywords
ring spinning, mekanika, tenacity, benang

Topic
Interdisiplinary

Link: https://ifory.id/abstract/JU4jkZAfGRrT

Corresponding Author
valentinus putra

Institutions
Politeknik STTT bandung

Abstract
Abstrak Artikel ini menguraikan pemanfaatan aplikasi teknologi plasma pijar korona pada bidang tekstil terutama pemanfaatanya dalam modifikasi sifat pembasahan pada permukaan kain poliester 100%. Hasil riset memperlihatkan bahwa dengan melakukan variasi waktu perlakuan plasma pada kain poliester grey 100% dengan tetal pakan dan lusi masing-masing 70 helai/inci dan 60 helai/inci didapatkan bahwa terdapat perubahan sifat pembasahan kain dengan meningkatnya sifat hidrofilik kain. Kata-kata kunci: plasma pijar korona, tekstil, hidrofilik Abstract This paper explains the application of corona discharge plasma in textile field specially for modification of surface properties and wet ability of polyester100% fabric. In this research, we have found that the variation of time treatment using corona discharged plasma on the fabric will influence the wet ability and hydrophilic properties of exposure specimen (polyester 100% with 70 / inch of weft density and 60/inch of warp density. keywords: corona discharged plasma, textile, hydrophilic

Keywords
plasma pijar korona, tekstil, hidrofilik

Topic
Interdisiplinary

Link: https://ifory.id/abstract/V6hKXzHtfuZ7

Corresponding Author
Muhammad Zaahid Alkindi

Institutions
(a) Prodi S1 Fisika,
Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung,
Jl. Ganesha no. 10 Bandung, Indonesia, 40132
(b) Kelompok Keilmuan Fisika Nuklir dan Biofisika,
Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung,
Jl. Ganesha no. 10 Bandung, Indonesia, 40132

Abstract
Darah adalah cairan yang terdapat pada tubuh manusia dan hewan yang membawa substansi yang diperlukan seperti nutrisi dan oksigen ke sel-sel dan membuang zat sisa hasil metabolisme dari sel-sel itu. Darah mengandung 45% komponen seluler yang disuspensikan pada plasma yang kaya protein. Darah terdiri dari eritrosit, leukosit, trombosit, dan plasma darah. Untuk proses separasi darah, dulu digunakan proses sentrifugasi pada beberapa mililiter sampel darah utuh lalu dipisahkan berdasarkan kepadatannnya. Proses ini memang bekerja, namun membutuhkan peralatan canggih dan tenaga kerja yang terlatih. Namun, darah tersebut dapat dipisahkan dengan memanfaatkan sifat-sifat fisisnya, seperti aliran fluidanya, bentuknya, dan tumbukannya. Metode yang digunakan pada makalah ini adalah memodelkan pergerakan sel darah dan melakukan pemisahan dengan bahasa pemrograman JavaScript. Selain itu, makalah ini akan menggunakan three.js, sebuah library JavaScript yang digunakan untuk membuat dan menampilkan animasi grafik komputer 3D untuk menganimasikan pergerakan dan proses separasi darah.

Keywords
Darah; JavaScript; Separasi darah; Three.js

Topic
Komputasi dan Pemodelan

Link: https://ifory.id/abstract/RuvXj6T3AWQH

Corresponding Author
Susi Susilawati

Institutions
a)Kelompok Keilmuan Fisika Nuklir dan Komputasi,
Fakultas Sains dan Teknologi, Universitas Islam Negeri SunanGunungDjati Bandung,
Jl. A.H Nasution no. 105 Bandung, Indonesia, 40614
*alfauziyyah.susi[at]gmail.com

b) Laboratorium Fisika Nuklir dan Biofisika,
Kelompok Keilmuan Fisika Nuklir dan Biofisika,
Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung,
Jl. Ganesha no. 10 Bandung, Indonesia, 40132

Abstract
Penelitian ini bertujuan untuk membandingkan efektivitas antara excel, pyton dan pemrograman web dalam pencarian akar persamaan non-linier metode bisection. Pada dasarnya excel tidak dianjurkan untuk mengolah data fisis karena data yang dimasukan harus diketik secara manual. Namun pada kasus ini peneliti akan membandingkan keakuratan data yang diperoleh dari excel dan python. Metode yang digunakan ialah dengan menginput data pada worksheet excel beserta fungsi persamaan non linier sehingga diperoleh nilai akarnya, Kemudian membandingkan nilai yang diperoleh dengan akar yang didapat pada python. Sehinga didapat hasil untuk range data yang kecil keduanya dapat digunakan, namun untuk range data yang besar excel kurang efektif karena rekonsiliasi data membutuhkan waktu yang lama. Lain halnya dengan python, untuk mengupdate data hanya tinggal mengubah kode progamnya saja.Adapun untuk menutupi kekurangan excel dalam hal penyimpanan dan updating dat, digunakan pemograman web dengan penyimpanan data melalui database yang dapat di update pada halaman html.

Keywords
efektivitas, persamaan non-linier, bisection, python, excel, html, databasde

Topic
Komputasi dan Pemodelan

Link: https://ifory.id/abstract/eh4PdxKqMCfQ

Corresponding Author
Marisa Variastuti

Institutions
1) Program Sarjana Fisika,
Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Gunung Djati Bandung
Jl.A.H Nasution 105, Bandung, Indonesia 40614
a)marisavrstty[at]gmail.com
b)alfauziyyah.susi[at]gmail.com
c)arip.idn[at]gmail.com

2) Laboratorium Fisika Nuklir dan Biofisika,
Kelompok Keilmuan Fisika Nuklir dan Biofisika,
Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung,
Jl.Ganesha No.10 Bandung, Indonesia, 40132
d) dudung[at]fi.itb.ac.id

3) Laboratorium Sistem Modelling,
Kelompok Keilmuan Fisika Nuklir Teori,
Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Gunung Djati Bandung,
Jl.A.H Nasution 105, Bandung , Indonesia 40614
e)yudha[at]uinsgd.ac.id

Abstract
Dalam ilmu fisika dikenalkan gerak sistem pendulum yang mana pada kehidupan sehari hari itu merupakan dasar kerja dari sebuah jam dinding kuno yang memiliki ayunan.Pendulum merupakan suatu benda yang diikatkan pada seutas tali yang dapat berayun secara periodik.Agar diperoleh hasil yang realistis maka gaya gesekan udara tidak diabaikan. Akibat adanya gaya hambat atau gaya gesekan maka akan terjadi redaman. Pendulum yang berosilasi dapat berhenti akibat adanya redaman.Pada penelitian kali ini telah dibuat sebuah program simulasi dari pergerakan sistem pendulum pada javascript dengan tujuan agar mempermudah pembelajaran dalam melakukan percobaan sehingga dapat di akses melalui browser.Pengguna dapat mengatur sendiri nilai dari massa beban, panjang tali dan sudut kemiringan dari pendulum. Perhitungan yang dilakukan menggunakan metode euler yang disusun dalam bahasa pemrograman javascript. Hasil akhir dari simulasi ini yaitu berupa data perubahan posisi terhadap waktu yang disajikan dalam bentuk animasi dan grafik.

Keywords
Euler, Javascript, Pendulum, Redaman, Simulasi

Topic
Komputasi dan Pemodelan

Link: https://ifory.id/abstract/LZETQdqzmgKa

Corresponding Author
Nurul Amin Sunanto

Institutions
1) Program Sarjana Fisika,
Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Gunung Djati Bandung
Jl. A.H Nasution 105, Bandung, Indonesia 40614
a) nurul.amin96[at]yahoo.com
b) zahranid027[at]gmail.com

2) Laboratorium Fisika Nuklir dan Biofisika,
Kelompok Keilmuan Fisika Nuklir dan Biofisika,
Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung,
Jl. Ganesha no. 10 Bandung, Indonesia, 40132
c) dudung[at]fi.itb.ac.id

3) Laboratorium Sistem Modeling,
Kelompok Keilmuan Fisika Nuklir Teori,
Fakultas Sains dan Teknologi, Universitas Islam Negeri Sunan Gunung Djati Bandung,
Jl. A.H Nasution 105, Bandung, Indonesia 40614
d)yudha[at]uinsgd.ac.id

Abstract
Penelitian ini dikembangkan untuk mengetahui fenomena perpindahan energi dari dua buah benda yang saling bertumbuk dengan massa dan kecepatan yang divariasikan. Pada kasus kali ini diabaikannya sebuah gesekan yang akan mengakibatkan benda yang saling bertumbukan tidak akan kehilangan energi yang mengakibatkan berhentinya dua buah benda tersebut. Di abaikannya gaya gesek ini bertujuan dapat diamatinya sebuah fenomena perpindahan dari setiap tumbukan yang terjadi tanpa menghiraukan benda tersebut akan kehilangan energi dan berhenti. Pemodelan untuk kasus ini digunakan javascript untuk animasi dan perhitungannya. Metode pembelajaran dengan visualisasi yang dibuat diharapkan dapat mempermudah proses pembelajaran dalam memahami hukum kekekalan energi kinetik dari suatu fenomena tumbukan.

Keywords
Perpindahan energi, Tumbukan, Pemodelan, Javascript

Topic
Pembelajaran

Link: https://ifory.id/abstract/8zmcxUuajLAf

Corresponding Author
Shofwan Shofwan

Institutions
Faculty of Economics and Business University of Brawijaya Malang

Abstract
Tourism is considered an effective way of increase welfare some traditional communities because it provides various jobs than traditional livelihoods as well as opportunities to sell uniquely local products. Community based tourism (CBT) has been identified for its ability to improve local economies which endorses traditional communities such as rural communities, fishing and small island communities, could improve their economic status. Scholars have examined the attitude of residents at different level, however, monitoring changes in residents- perception are ignored. This paper reveals the research gap to be filled by examining the residents- perception of sustainability in term of economy, socio cultural factors, environment and well being at different CBT. The research method employed survey questionnaire as an instrument to collect data before the data is analyzed. The 500 usable questionnaires of three southern coastal regencies (Malang, Blitar, Tulungagung) in East Java were collected. The result shows us that four dimensions of sustainability have significantly different results. The study concludes that the respondents- perception differed across development steps, thus, the management boards or local governments should consider the development opportunities and adopt appropriate strategies of CBTs implementations.

Keywords
Community Based Tourism (CBT); Sustainability; Residents- Perception; Coastal Destination

Topic
Sustainable development

Link: https://ifory.id/abstract/yEmw3LvZXTRF

Corresponding Author
Benny Hutahayan

Institutions
Brawijaya University

Abstract
This study aim to analyze the Empowering of Small, Micro and Cooperatives Business Enterprise(SMCEs) on the base Agribusiness in Facing Asean Economic Community (AEC). Population in research is all SMCEs under develop on Board of Cooperative, Industry and Commerceof three areas, North-East, Central, and South-West Malangbeing based on Agribusiness. Sample was done of the trained and developed about management of is effort; administration, accountancy, marketing and exploiting of various facility of is inclusive of information technology that is as much 60 SMCEs.Analyze conducted by regression of variable supporting power of SMCEs. The study result show that variables identified in model to progress of effort SMCEs equal to 0,66%. While if seen from level of influence relative minimize, that is only equal to 0,44%. Its Small cause is the influence possibility of progress variables of effort, with the indicator only mount the advantage and satisfaction in trying to represent the small shares from progress variables of is effort very macro. But that way result of this study represent the step of early good in comprehending by real is condition faced by SMCEs in Malang. In addressing this condition SMECs anywhere including in Malang require attention was more serious in order to organize further about their performance in the face of this global issue. Otherwise SMECs would lose in global competition, which grew rapidly in the future.

Keywords
SMCEs Agrobusiness, AEC

Topic
Economics

Link: https://ifory.id/abstract/uUKPHDjh3wpb

Corresponding Author
Acim Heri Iswanto

Institutions
Universitas Pembangunan Nasional Veteran Jakarta

Abstract
Objective – This research aims to assess the results of lean implementation in reducing the cost of medical Inventories in the operating theatre of a hospital in Indonesia. These results can be used as a motivation to extend implementation to other aspects of overall operating Theatre and hospital management. Method – Resource inventory to build management commitment, willingness to share data, and information of implementation history was the initial stage of research. Furthermore, the research was conducted by applying 5S methodology to medical Inventories in the operating theatre of RSIA Grand Family, Jakarta. The 5S procedure then was evaluated using descriptive and inferential statistics. The inferential statistics used was Wilcoxon Signed Rank test. Findings – Lean implementation that was carried out successfully reduced inventory costs to an average of Rp 331,555,768 per month in three months after lean implementation, from Rp 381,140,031 per month in the previous three months before lean implementation. This means that there is a cost reduction of 13.01%. Furthermore, the number of medical Inventories items was reduced by an average of 12.45%. Research Implications – This research has a number of limitations. First, this research was conducted on the aspect of medical Inventories from the operating theatre. Second, this research was still on a small scale and only evaluated the cost aspect of medical Inventories. Practical Implications – Lean implementation can be carried out in the context of hospital medical Inventories. Therefore, health care providers can try to implement lean in an effort to reduce inventory costs to improve efficiency in improving health services. Originality/ Value – There is still little empirical research on the lean implementation on medical Inventories in the operating theatre. Future research can replicate this research on a broader scale.

Keywords
lean implementation, waste of inventory, operating theatre, health service

Topic
Economics

Link: https://ifory.id/abstract/pRV4ZQ6nJLDT

Corresponding Author
Kardiyem Kardiyem

Institutions
Economic Faculty
Universitas Negeri Semarang

Abstract
Fraud is a mistake made by someone intentionally which could harming others. Fraud within the sope of village goverment is very determental to the public interest. Village funds that are organized for the walfare of the village community are not optimal because of the irresponsible behavior of village apparatus. This Study aims to explore the tendency of accounting fraud committed by village apparatus in Weru district related to the role of spiritual intellegence in moderating the influence of suitability of compensation, apparatus morality, and organizational ethical culture. The population of this research is all villaage apparatus in Weru District. This Research used purposive sampling technique with 52 respondents. The sample of research includes village head and village apparatus who managed village funds. They were village secretary, village treasurerand also the head of development planning affairs. This Research uses quantitative approach. Method of collecting data using aquestionaire. Data analysis techniques using descriptive analysis, regression moderation with different test. The results of the study show that there is a negative influence between apparatus morality and ethical culture on accounting fraud tendencies. There is a positive influence on the suitability of compensation on accounting fraud tendencies. There is an influence of spiritual intelligence in strengthening the negative relationship between apparatus morality and organizational ethical culture towords accounting fraud tendencies. There is an influence of spiritual intelligence in weakning the positive relationship of compensation suitability on the accounting fraud tendencies. Based on the result of the analysis, the researchers suggested that the government hold training on managing village fund programs on a regular basis and provide appropriate remuneration in managing vilage funds. The professionalism of village apparatus can be improved through training in managing village funds. This can be tried to reduce someone-s fraudulent behavior.

Keywords
Compensation Compliance; Aparatus Morality; Organizational Ethical Culture; Spiritual Intelligence; Tendency of Accounting Fraud

Topic
Accounting

Link: https://ifory.id/abstract/PerfwaW2mMAy

Corresponding Author
ROUFAH INAYATI

Institutions
Faculty of Economics, Universitas Negeri Malang Jalan Semarang 5, Malang 65145, Indonesia

Abstract
Today the Industrial Revolution has reached its peak where technology is the basis of human life. The Indonesian government has launched Making Indonesia 4.0 that grown massively. One sector that must be prepared in achieving Making Indonesia 4.0 is the Education Sector which can be done by improving the human resources quality. The readiness of future economic teachers spearheaded the improvement of human resources quality. Therefore, it is necessary to conduct research that focuses on analyzing the readiness of future economic teachers to face the Industrial Revolution 4.0. This study uses descriptive qualitative methods with a type of case study research. Primary data obtained from in-depth interview together with respondents and secondary data obtained from the document that shows the result of educational subject. Data collection is done by the method of observation, interview, and documentation that using source triangulation and method triangulation. The indicators used to analyze the readiness of these future economic teachers are (1) Educational Competence, (2) Competence for Technological Commercialization, (3) Competence of Globalization, (4) Competence in the Future Strategies, and (5) Conselor Competence Based on the results of this study, it can be concluded that; (1) Educational Competence possessed by future economic teacher from the two ex-IKIP state university in East Java is sufficiently capable in dealing with the Industrial Revolution 4.0; (2) Competence for Technological Commercialization of the future economic teachers is not too good to face the Industrial Revolution 4.0; (3) Competence of Globalization that is owned cannot be maximized in facing the Industrial Revolution 4.0;(4) Competence in the Future Strategy shows that this future economic teacher does not have a definite strategy to predict what will happen in the Industrial Revolution 4.0; and (5)Conselor Competence shows good but still not enough to face the Industrial Revolution 4.0.

Keywords
Education Sector, Ex-IKIP State University, The Industrial Revolution 4.0, The Readiness of Future Economic Teachers

Topic
Economics Education (Accounting, Cooperative and Office Administration Education)

Link: https://ifory.id/abstract/cAk2HVR6XpT8

Corresponding Author
Najla Prihana Gunawan

Institutions
School of Business and Management, Bandung Institute of Technology
Jl. Ganesha No. 10 Lb. Siliwangi, Bandung, 40132, Indonesia
*najla.prihana[at]sbm-itb.ac.id

Abstract
Internet is one of the most important things for people-s lives in this era. To connect with others by bringing the distance closer, even for doing transaction such as shopping. As the internet has growth expeditiously, many people use the internet also for running their business and use one of the most powerful platforms on the internet, which is social media. And to market their product, there are several ways to promote the product and to attract the customer such as by endorsing people that interested in fashion and can give influence to their followers, also have more than a thousand of followers on social media or Instagram, called Fashion Influencer. One of the main reason why people buy a product is because of the recommendation of fashion influencer on social media, people buy for something that they don-t intend to buy it. And the impulse buying behavior happens. This research aims to analyze and identify the impact of fashion influencer marketing on Instagram to customer impulsive buying behavior and related to the fashion style adopted by the online consumer using a diffusion of innovation theory. This research belongs to qualitative research with a semi-structured and in-depth interview. The sample of this research is .the customer or someone who is using Instagram and follows for the fashion industry with the early adults age in the range of 18 to 22 years old in Indonesian urban area, Bandung and Jakarta. This study is expected to reach the objective of this research; first, to know and understand the factors of fashion influencer that affects the impulse buying on online customer and second, to analyze the factors that influence the adoption of online impulsive buying by drawing ideas from the theory of diffusion of innovation.

Keywords
Fashion influencer; Impulsive buying behavior; Online shopping; Diffusion of innovation

Topic
Management

Link: https://ifory.id/abstract/aVM8emKcbg7Z

Corresponding Author
Fairuz Habibah Ramdhani

Institutions
School of Business and Management, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
fairuzramdh[at]gmail.com

Abstract
This paper focuses on explaining and describing the element of beauty viral video created by social media influencers in Youtube along with behavioral decision taken by the audiences after watching it. Behavioral decisions assessed in this study are in form of viewing, liking, and sharing suggested viral videos. Two types of sample videos were used: top three most viewed Youtube videos of three Indonesian mega-beauty influencers and top three most viewed Youtube videos of three Indonesian middle-user influencers. Research applied in this study was based on virality element framework coined by Tyler West. A video-watching experiment was executed. The result shows that despite having myriad number of viewers, viral beauty videos do not contain the same elements as other viral videos. Other than that, the elements do not have relation with behavioral decision taken. However, there is a relation between viral elements and level of influencer.

Keywords
beauty video; behavioral decision; viral video; virality; youtube video; marketing influencer

Topic
Management

Link: https://ifory.id/abstract/MGy7u6TVjAZJ

Corresponding Author
Alizah Putri

Institutions
abc) School of Business and Management ITB, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*alizah.anugrah[at]sbm-itb.ac.id

Abstract
According to their birth years, millennial generation makes up the rapid growing segment of the workforce for the past several years and continue to increase by time. In 2016, AON as a global leader in human resources consulting shows that millennials and beyond will dominate global workforce in 2025, they make up to 75 percent of workforce composition that was once accommodate by Gen X or Baby Boomers. Due to this situation, it is critical to a business organization of how to adapt, evolve and learn what makes millennials attract and tick in order to acquiring the best talent or workforce based on job qualification and also maintaining their satisfaction in workplace. Work environment that are not adapt in order to accommodate workforce or employee with different attitudes and expectation somehow may struggle with productivity challenge (Stewart, Oliver, Cravens, & Oishi, 2017). Therefore, this research aiming to understand role of job satisfaction in workplace from millennial generation-s perspective and examine which of job satisfaction dimension that will give significant impact to satisfied millennial workforce with their job. Moreover, consider overall impact of job satisfaction on organizational performance. Using purposive sampling method, data collected from 104 respondents by questionnaire with several criteria such as a man or woman, must be an active employee in Bandung specifically in Food and Beverages company also within the age range of 19-39 years old ( generation Y or millennials generation). The data collected analyzed with descriptive analysis and multiple linear regression analysis. The result show that four dimension of job satisfaction such as promotion, pay, supervision and co-workers that used as an independent variables in this research are significantly have an influence toward organizational performance which those independent variables could explain for about 81% of the dependent variable.

Keywords
Job Satisfaction; Millennial Generation; Organizational Performance

Topic
Management

Link: https://ifory.id/abstract/NTZXr4Javmpk

Corresponding Author
Puji Novita Sari

Institutions
Universitas Negeri Semarang

Abstract
Kampung Marketer is an organization that empowers people in the field of digital marketing such as customer service, advertiser, content writer, and social media admin. The people who have been empowered will be connected to business people to market their product online. This paper attempts to bring forward the idea of exploring the socio-economic impact from the Kampung Marketer in Karangmoncol sub-district, Purbalingga Regency. Research method in this study used descriptive research design with quantitative approach. The population of this study were 437 people empowered by Kampung Marketer. Samples were determined using Slovin formula with a significance value of 0.05, so that a sample of 209 was obtained. Data for the study were collected through questionnaire. The results show that, there are positive impact of Kampung Marketer on the socio-economic conditions of the community such as, (1) Kampung Marketer was successful to empower young people aged 20-25 years by 52%. (2) Kampung Marketer also able to reduce the flow of urbanization, with 40.5% of the background working in the factory, and now many young people choose to work in Kampung Marketer. (3) Kampung Marketer has also provided employment opportunities for people who do not continue to high education and disadvantaged communities, it is noted that only about 10% of the empowered community has a background in college. The remaining 77% only go to high school and equivalent. (4) The existence of Kampung Marketer make people have a decent income. About 56% of the community has an income of Rp1,000,000 to Rp.2,000,000. (5) Kampung Marketer also has an impact on awareness of education, that around 48% of people have a high education awareness.

Keywords
Kampung Marketer, Social Entrepreneurship, Socio-Economy Condition

Topic
Economics

Link: https://ifory.id/abstract/tzMqE3cGj6Jp