Indonesia Conference Directory

Corresponding Author
Kamol Khamraev

Institutions
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers (TIIAME), Uzbekistan.
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers Bukhara Branch (TIIAME BB), Uzbekistan.

Abstract
Background: Research was conducted on the irrigated fields of educational-scientific center of Tashkent Institute of Irrigation and Agricultural Mechanization Engineers Bukhara branch, located in Bukhara region, Uzbekistan, over the 2017-2019 years. Aims: the purpose of this research is to achieve high efficiency of water resources through the introduction of ecologically sustainable agriculture soil leaching technologies using biological compound Biosolvent (BCB) under the global climate change and growing water scarcity in arid irrigated areas. Materials and Methods: Field experiments and laboratory analysis methods are used in our research. Soil analysis, as soil temperature, moisture, salinity level, chlorine ion and dry residue were measured through Environmental-Device-Technology (Umwelt-Geräte-Technik GmbH) UMP-1 soil measurement device. Results and Discussions: According to the approved methodology, in field experiments, 3 options for leaching saline soils in 3 repetitions were studied [1,2]. Area of experimental plots – 0.0625 ha (figure 1). In the first variant of the research, soil leaching based on recommended salt solution according to V.R. Volobuev&

Keywords
ameliorative conditions, biological compound Biosolvent, chloral ion, degree of salinity, leaching norm, watersaving technology.

Topic
Environmentally Sustainable Agriculture

Link: https://ifory.id/abstract/9WkYE4GVmedy

Corresponding Author
sujono -

Institutions
Universitas Muhammadiyah Malang

Abstract
Research on the use of fermented cacao seed skin waste (FCS) was carried out to determine dry matter and crude protein consumption as well as daily weight gain of local rams. Fifteen local rams aged 1.5 years with an initial body weight ranging from 14–20 kg were used for analyses. The local rams were grouped according to their initial body weight: K1 = 14–16 kg, K2 = 16–18 kg, K3 = 18–20 kg. Variables measured were dry matter and protein consumption, daily weight gain and feed conversion. The research method used a randomized block design. The treatments involved five levels of fermented cocoa FCS. Data analysis involved ANOVA and Duncan-s test. The results demonstrated a significant effect on dry matter and crude protein consumption (P & lt;0.01) and of daily weight gain (P<0.05) but no significant effect with respect to feed conversion (P> 0.05). The highest consumption of dry matter and protein in the P1 treatment and the highest daily weight gain for local rams was obtained in the P3 treatment. Hence, it was concluded that fermented cocoa seeds can replace up to 75% of field grass for sheep feed purposes.

Keywords
Local rams, Fermented cocoa seeds, Performance of production.

Topic
Environmentally Sustainable Agriculture

Link: https://ifory.id/abstract/bQgNmLjRh4a2

Corresponding Author
Endah Ratna Arumi

Institutions
a. Department of Informatics Engineering, Engineering Faculty, Universitas Muhammadiyah Magelang
*arumi[at]ummgl.ac.id

Abstract
Students in each semester must complete the Online Credit Hour Form (KRS). Usability is closely related to user experience, but there is still not much consideration in developing interfaces. User Experience is used to show the ease and efficiency felt by users in using the system. The purpose of the study was to evaluate the usefulness of using fuzzy logic values based on several criteria. Criteria become basic needs or conditions that must be met in content to be used by the average user. The Usability Assessment Criteria consist of learnability, memorability, efficiency, error, and satisfaction. Based on the Usability Assessment Criteria will be done to assess the quality with the values of linguistic variables (i.e .: very good, good, enough, bad, and very bad). However, the existing description of this attribute has subjective value, so the assessment is not clear. Therefore this study produces fuzzy rules that can be used as fundamental usability assessment rules. The use of fuzzy rules in evaluating usability can be used to identify and evaluate software problems to propose an efficient solution.

Keywords
usability, user experience, fuzzy logic, hci, ui/ux

Topic
Information Engineering

Link: https://ifory.id/abstract/A4drRvXphVwj

Corresponding Author
Dwi Tyas Utami

Institutions
Universty state of Jakarta

Abstract
The purpose of this study was to determine the influence of personality, communication, conflict and trust in the task commitment of the Head of Elementary School in DKI Jakarta Province. The study was conducted on work commitments involving 317 Head of Elementary School in DKI Jakarta Province who had been selected from the target population of the Head of Elementary School in DKI Jakarta Province using a quantitative approach with path analysis methods. The direct effect of personality on the commitment of the task is 0.144 while indirectly through the conflict is 0.023, through a large trust of 0.019 so that the effect of total personality on task commitment is 0.186. The direct effect of conflict on task commitment is -0.177 while indirectly through personality magnitude -0.018, through the magnitude of confidence -0.021 so that the effect of total conflict on task commitment is -0.217. Therefore to improve the commitment of the Head of Elementary School in DKI Jakarta Province that needs to be improved is personality, communication, trust, Conflic, task commitment.

Keywords
Communication, Conflict, Trust, Personality, Task Commitment

Topic
Education

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

Corresponding Author
Enny Purwati Nurlaili

Institutions
1)Study Program of Agricultural Product Technology, Faculty of Agricultural Technology, Universitas 17 Agustus 1945 Semarang, Jl. Pawiyatan Luhur Bendan Dhuwur Semarang
2)Study Program of Agricultural Product Technology, Faculty of Agricultural, Universitas Veteran Bangun Nusantara Sukoharjo, Jl. Letjend S. Humardani No. 1 Sukoharjo 57521

Abstract
The utilization of rice bran in rice milling in Java, in general, is not as soon as after leaving the mill. The research aims to determine whether the duration of rice bran storage affects the antioxidant activity, yield and total phenols of hydrophilic extracts. The study was conducted with rice bran treatment stored for 0, 1, and 2 weeks. Each sample was extracted hydrophilic component with ethanol solvent. The extracts obtained were tested including yield, total phenol, and antioxidant activity. The results showed that the increase in yield experienced a significant difference, especially in the second week. Total phenol and antioxidant activity increased significantly in the first week and decreased again in the second week. The conclusions from this study indicate that the duration of rice bran storage needs to be considered the optimal limit.

Keywords
antioxidant activity, hydrophilic extracts, rice bran, total phenols, yield

Topic
Agricultural Engineering

Link: https://ifory.id/abstract/eKku6EAUajRY

Corresponding Author
oheo kharis

Institutions
Univeristy of Halu Oleo

Abstract
This study aims to analyze the practice of illegal transshipment in compliance with Act Number 45 of 2009 criminal provisions law concerning Fisheries, using legal concept, law, and case approaches. Nowadays, there are various operational modes of fish theft, with poor regulations that maximally accommodate crimes related to fisheries by perpetrators. Therefore, due to its unsustainability and economic loss, the fisheries and marine sector in Indonesia has to improve its performance. The results show that illegal transshipment engages some elements contained in Article 94 and 94A of Act Number 45 of 2009 which was an amendment of Act Number 31 of 2004. According to article 94, when a fishing vessel is caught transferring shipment in the middle of a high sea without in possession of a license called SIKPI, its owner/s are sentenced to 5-years imprisonment with a IDR 1,500,000,000 (one billion and five hundred million rupiah) fine. Meanwhile, according to Article 94A, when a fishing vessel is caught using fake licenses such as SIUP, SIPI, and SIKPI, its owner/s are sentenced to 7 years imprisonment with a fine of IDR 3,000,000,000.00 (three billion rupiahs).

Keywords
Criminal Law Illegal Transshipment Act Number 45 of 2009 concerning Fisheries

Topic
Maritime, Environment and international policy

Link: https://ifory.id/abstract/Aaxe6KPuVgCq

Corresponding Author
Sri Susyanti Nur

Institutions
Faculty of Law Hasanuddin University

Abstract
The Cultural Heritage Area in the Tongkonan Kete Kesu area is an asset of North Toraja tourism which became the most receiving place for cultural tourists in 2017, so it was given the title "Most Popular Indigenous Village" at the 2017 Indonesian Charm Award event. Aluk Todolo culture, and the existence of traditional houses of Tongkonan, granary (alang), stone graves (liang) and graves in buildings (patane) have high cultural values that are still preserved in traditional life in the traditional area of Tongkonan Kete Kesu. This is the basis for the establishment of the Kete Kesu Tongkonan as a Cultural Heritage Area based on the Regulation of the Minister of Culture and Tourism Number: PM.09 / PW.007 / MKP / 2010, also designated as an area for the development of an environmentally friendly cultural and natural tourism industry, namely by developing the application of a variety of local cultural values in peoples lives (Article 6 paragraph (2c) of North Toraja Regency Regulation No. 12 of 2011 concerning Regional Spatial Planning 2011-2031). The stipulation of Tongkonan Kete Kesu Customary Area as a Cultural Heritage Area and as a Tourism Industry Development Zone, in terms of the aspect of Agrarian / Land Law requires Legal Certainty and Legal Protection of Indigenous Peoples and Tongkonan Indigenous Areas that are in the Cultural Heritage Area. This research method is Empirical Law by looking at facts / legal phenomena that occur in practice and actual events in society. This type of descriptive research is based on the aim to describe the Toraja indigenous people, the Tongkonan Indigenous Territory, the value of local wisdom in its preservation as a cultural tourism object that is in the area of cultural heritage. The research location was conducted in the Kete Kesu Cultural Heritage Area, located in Kesu District, North Toraja Regency. Research Results, that: 1) Tongkonan Kete Kesu Traditional Territory as a place for traditional / cultural life is based on the beliefs / cultural heritage of ancestors called aluk todolo or alukta. In the Tongkonan Indigenous area has a special field for the implementation of the Rambu Solo ritual, and there is also the Tongkonan Traditional House, Alang, Liang, Patene which are the wealth of the Indigenous People. 2) Conservation and maintenance of the environment of the Tongkonan Indigenous Area is an obligation for each member of the Indigenous Peoples based on the values of local wisdom and subject to adat sanctions for those who commit violations. 3) Utilization of the area of cultural heritage as a tourist attraction that brings economic value has not been synergized properly between the Provincial Government, Regional Government, related Agencies. Indigenous Peoples and Managers of the Foundation for Cultural Property Owners.

Keywords
Cultural Heritage Area, Protection, Tongkonan

Topic
Democracy, Constitution, and Globalization

Link: https://ifory.id/abstract/u2Y3PMv4CnZw

Corresponding Author
Pristina Hermastuti Setianingrum

Institutions
Department of Management
Sekolah Tinggi lmu Ekonomi Indonesia

Abstract
The purpose of this research is to measure and to analyze the impact of financial ratios to companies- stock price, while using macroeconomics variable as control variable. The financial ratios used in this research are: price earnings ratio, price to book value, net profit margin and return on equity. The samples of this research are stock price of 25 companies in consumption and financial sectors in Indonesia stock market during period 2009 to 2016, therefore there are 200 panel balance observation. Using Fixed Effect Model, result of the research shows that companies financial ratios have strong influence on stock price. Test of hypotheses showed that together all financial ratios have significant impact on stock price. However, partially, only price earnings ratio and price to book value have significant impact on stock price.

Keywords
stock price, price earnings ratio, price to book value, net profit margin, return on equity, Indonesia stock market

Topic
Corporate Finance

Link: https://ifory.id/abstract/h6ejTGqybBZ9

Corresponding Author
Berlian Karlina

Institutions
Universitas Budi Luhur

Abstract
The objective of this research is to develop specific factors that could influence customer-s spending with mobile payment as intervening variables to the conceptual perspectives. This paper examines the potential determinants to spending with concepetual persepectives: consumer features, business features, and technology features. Mobile transaction is the intervening variables that may affect the conceptual perspectives to spending. Survey questionnaires will be distributed to about 120 mobile payment users in DKI Jakarta using convenient sampling method. Data collected will be analyzed using regression technique to determine the significant levels of interactions between the dependent, intervening variables, and independent variables. The result of this study could help firms understand the consumer-s perspective to spend by using mobile payment as media of transaction. This could also be relevant for Indonesia to face Industry Revolution 4.0. This research would also provide useful data that could help the industry determine consumers- mobile payment needs in the context of Indonesia. The empirical insights from this study would also be useful for theory building.

Keywords
Mobile Payment; Spending; Consumer Features; Business Features; Technology Features

Topic
Technology Management

Link: https://ifory.id/abstract/abLKzdQgZh34

Corresponding Author
Alnisa Min Fadlillah

Institutions
Universitas Pembangunan Nasional Veteran Jakarta

Abstract
In this era Islamic banking is growing rapidly. The development of products, services and infrastructure that support the optimization of Islamic banking to increases their market share. But unfortunately, this development is not supported by their human resources that should be the main movers in achieving business goals. Therefore, this research aims to provide information to Islamic banks in develop their human resources so that they can continue to increase their market share in Indonesia. This study uses a qualitative method using the spiritualism paradigm, the results of this study is recommendation for Islamic banking in term of developing of human resources model.

Keywords
Human resource Development, Islamic banking, model of human resource development

Topic
Human Resources and Organisations

Link: https://ifory.id/abstract/ft2F4eVPdJzh

Corresponding Author
Muji Rahayu

Institutions
Politeknik Kesehatan Kemenkes Yogyakarta

Abstract
STUDY OF EFFICACY LEMONGRASS (Cymbopogon citratus) EXTRACT AS LOWERING BLOOD CHOLESTEROL LEVEL AGENT ABSTRACT Muji Rahayu, Sistiyono hayuningpuji@gmail.com Lemongrass (Cymbopogon citratus) is a rich plant containing compounds called polyphenols, especially flavonoids. Lemongrass has been widely used in many counytries as antiinflamation, antibactaria, antifungal, antidiarhoea and as repellent to insect also proven to lower blood glucose. This study aims to determine the effect of the ethanol extract of lemongrass on blood lipids profile using 25 male albino rats Wistar strain, were devide into 5 groups, each group consisted of 5 rats, namely the control group (K), the drugs standard Simvastatin group (Sim) and the treatment group ES100, ES200 and ES400. All rats made hyperlipidemic by administration of diet high in fat and egg yolk for 14 days, then assayed lipid profile include total cholesterol, LDL, HDL and triglyceride (pre test). Furthermore, the group K were without treatment, S group were give drug standard simvastatin 0,18 mg/200g bwt, ES100, ES200 and ES400 group treated with ethanol extract of lemongrass respectively 100, 200 and 400 mg/kg bwt with sonde for 14 days. On the 15th days all rats were fasted and then have blood drawn through orbital venous and made serum and defined serum lipid profile (post test). The result showed the group of rat treated with ethanol extract decreased the levels of total cholesterol, LDL, and triglyceride as well as an increase in HDL cholesterol levels were significantly (p<0.05). This study showed the ethanol extract of lemongrass has lowering cholesterol levels and improve lipid profile in hyperlipidemic rats.

Keywords
Cymbopogon, cholesterol, LDL, HDL, triglyceride

Topic
MEDICAL LABORATORY TECHNOLOGY

Link: https://ifory.id/abstract/T3PFGhJxC7Mn

Corresponding Author
Muhammad Hasbi Saleh

Institutions
a)Department of Accounting
Sekolah Tinggi Ilmu Ekonomi Indonesia
Jakarta, Indonesia
*m.hasbi_saleh[at]stei.ac.id
b) Sekolah Tinggi Ilmu Ekonomi Indonesia
Jakarta, Indonesia
vikifa94[at]gmail.com

Abstract
This research aims to study whether water distribution function of PDAM Tirta Bhagasasi Bekasi Branch has been effective based on service claim and complaint from the customers. The research also aims to determine whether the PDAM has implemented water audit and comply to the level of water loss PDAM according to water standard. This research uses descriptive research type of qualitative approach, which is compiled by data analysis method in the form of preliminary examination, review and testing on management control system, detailed audit, and audit report which yield recommendation to the company. The unit of analysis of this research is the Distribution Division of PDAM Tirta Bhagasasi Bekasi Tambun Branch. The data used in this research are primary and secondary data. Data collection techniques used library research methods, observation, interviews, questionnaires and documentation. The result of the research proved that the company has an organizational structure with clear division of tasks, and the company policies regarding the distribution process so that the implementation of water distribution at PDAM Tirta Bhagasasi Bekasi Branch Tambun is efficient, but not fully effective, because there were still some deviations may result in a loss to the company. In addition, PDAM has not implemented water audit and water loss rates according to the water audit exceeding 10%, which according to the American Water Work Association (AWWA) should be complied to reduce the rate of water loss.

Keywords
Operational Audit, Water Audit, Distribution Function

Topic
Auditing

Link: https://ifory.id/abstract/Q3EkaxUBmwZg

Corresponding Author
Muhammad Hasbi Saleh

Institutions
a*)Department of Accounting
Sekolah Tinggi Ilmu Ekonomi Indonesia
Jakarta, Indonesia
m.hasbi_saleh[at]stei.ac.id
b) Sekolah Tinggi Ilmu Ekonomi Indonesia
Jakarta, Indonesia
Almanita.one[at]gmail.com

Abstract
This research aims to study the effectivity and efficiency of import transactions process that have been running as one of bank services in applying information systems. This research uses descriptive qualitative research, where in data analysis of audit information system using audit approach around computer, which data have been compiled through preliminary examination, review and testing on management control system, detailed audit and audit reporting which accompanied by recommendations to the company. The unit of analysis of this research is the Trade Processing Center (TPC) Import section PT. Bank Rakyat Indonesia (Persero) Tbk Jakarta. Data used in this research are primary data and secondary data. Data collection techniques using library research methods, observation, interviews, questionnaires, and documentation. Research results prove that the company already has an organizational structure with clear division of tasks and segregation of duties, the management policies of information system so that the implementation of import transaction at PT. Bank Rakyat Indonesia (Persero) Tbk is efficient, but not fully effective, since there are still some minor audit findings that could lead to potential losses in income.

Keywords
Operational Audit, Information System, Import Process

Topic
Auditing

Link: https://ifory.id/abstract/PeMQAF9HnphX

Corresponding Author
Basyiruddin Nur

Institutions
Sekolah Tinggi Ilmu Ekonomi Indonesia

Abstract
The aim of this study is to prove empirically the influence of Revenues and Capital Expenditures to the Human Development Index at 4 Provinces in Indonesia. The research method is quantitative descriptive. By quantitative descriptive method, the researcher intends to analyze the relationship among variables with double regression technique. The population in this research will cover 4 provinces namely the Provinces of DKI Jakarta, Central Java, Nusa Tenggara Barat and Lampung since 2014 to 2017. Provinces of DKI Jakarta and Central Java will represent the provinces whose big amount of Revenues and Capital Expenditures. While the provinces of Nusa Tenggara Barat and Lampung will represent the provinces whose small amount of Revenues and Capital Expenditures. The following data of this study are downloaded from Government Websites and Central Agency of Statistics, namely Local Government Financial Reports and Human Development Index. This study will utilize the software of SPSS version 21. The result of the study indicates that Revenues and Capital Expenditures have positive, significant and simultanously influence to the Human Development Index

Keywords
Revenues, Capital Expenditures, Human Development Index

Topic
Public Sector Accounting

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

Corresponding Author
Fitrianti Darusman

Institutions
Program Studi Farmasi,
Fakultas Matematika dan Ilmu Pengetahuan Alam,
Universitas Islam Bandung,
Jl. Tamansari No.1 Bandung, West Java, Indonesia 40116

Abstract
Currently there are many floor cleaning products that have antibacterial or disinfecting activity but are derived from chemicals, for example benzalkonium chloride. Not a few people who use this product in addition to the advertisements offered, this product is also proven to have an effective antimicrobial effect and at the same time very corrosive to remove dirt crust on the floor. On the other hand, this can have a negative impact on human health, because this can cause inhalation through the respiratory tract, contaminating food or sticking to the skin. Whats more, these household products are used every day to clean the house. By using herbal floor cleaning products from bidara leaf extract is a halal and safe solution, besides being able to use a floor from microbes it also keeps the house protected from interference from jinn and magic. Al-Quran Garden which is located on the Sersan Bajuri Canal, Cihideung Village, Parongpong District, is a center for nurseries, care, cultivation and sale of plants mentioned in the Al-Quran and As-Sunnah (Hadith) such as rose, tiin , pomegranate, grapes and arabian bidara. To support the Quranic Healing Clinic program, the Al-Quran Garden requires collaboration with educational institutions in this case the UNISBA Pharmacy Study Program in utilizing the results of research that is / has been carried out on the Quran plant herbs which are its commodities, among which are the objects of this PKM is the leaf of arabian bidara (Ziziphus spina-christi L.) which is then developed into an herbal floor cleaning product as an antibacterial or natural disinfectant as well as a home media ruqyah. According to the proposition of the Koran, the leaves of bidara are not liked by jinn so it is effective in driving away the interference of jinn and magic. Bidara or sidr is mentioned 3 times in the surah Al-Quran, namely QS. Saba verse 16, QS. An-Najm verses 14 and QS. Al-Waqiah verse 28, which describes the bidara tree as a unique tree, because it can be found both in the natural world and the afterlife. Besides leaves bidara is one of the herbs that the Prophet Muhammad SAW recommended for use by humans in purifying or bathing. Thus, the Community Potential Empowerment Program (P3M) in PKM is closely related to the LPPM Strategic Plan namely the utilization of research, education and counseling results that are consultative to communities outside Unisba and training in the manufacture of pharmaceutical products using simple technology that can be developed with PKM partners to be used by the wider community.

Keywords
bidara arab leaf, sidr, antibacterial, natural desinfectant, household ruqyah

Topic
Drug Discoveries and Development

Link: https://ifory.id/abstract/2YQRxWyAZmbh

Corresponding Author
ARI ISTANTI

Institutions
Livestock Product Processing Technology, Politeknik Negeri Banyuwangi
Agribusiness, Politeknik Negeri Banyuwangi, Indonesia

Abstract
Indonesia is an agrarian country where farming is the main occupation of its people. Therefore fertiliser becomes an indispensable item. At present, the majority of fertilisers are met by chemical fertilisers. The low content of micronutrients in chemical fertilisers causes quality degradation to the chemical, physical, and biological properties of the soil. Organic fertiliser is one of the strategic solutions to overcome these problems. Agricultural and livestock waste, including coconut husk, goat manure, and chicken excreta can be used as raw material for liquid organic fertiliser. Experiments were comparing various compositions of coconut husk used, namely 0, 0.65, 1.25, 2.5, and 5%. The analysis design used is One-Way Anova. Fermentation was carried out for one week in anaerobic conditions. Ammonium, nitrate, and nitrite levels of bioculture with the addition of 5% young coconut husk were significantly higher than other treatments, obtained values, 0.193; 0.705; and 0.523%, respectively. The bioculture made has met the quality of liquid fertiliser as in Standar Nasional Indonesia (SNI).

Keywords
liquid fertiliser, bioculture, goat manure, chicken excreta, coconut husk

Topic
Organic Agriculture

Link: https://ifory.id/abstract/C24pN7zhAyra

Corresponding Author
Fathiyah Hakim Sagitaningrum

Institutions
1) Civil Engineering Program, Civil Engineering Department, Universitas Indonesia, Depok 16424 Indonesia
* titisari.nurul[at]gmail.com
2) Environmental Engineering Program, Civil Engineering Department, Universitas Indonesia, Depok 16424 Indonesia
3) Engineering Education Working Group, Faculty of Engineering, Universitas Indonesia, Depok 16424 Indonesia
d) Faculty of Computer Science, Universitas Indonesia, Depok 16424 Indonesia

Abstract
It was known that utilizing online discussion forum had an effect in increasing the understanding of the students of the class. To analyze the online learning experience, the Community of Inquiry (CoI) model is proposed. The CoI model divides the dynamics online learning process as social presence, teaching presence, and cognitive presence. This study aims to compare the application of CoI in Soil Mechanics course under the Civil Engineering Department at a large public university in Indonesia. The students of Soil Mechanics course were given a problem-based online discussion with two different types of discussion for two materials. The first one was a case study of Consolidation Settlement in a Collaborative Learning while the second one was a case study of Seepage case in a Free Discussion. Through quantitative analysis of the students- discussion transcript, it was found that cognitive and teaching presence were higher than social presence. Finally, through interview to students, it was found that students with active participation had better understanding and grades compared to passive students.

Keywords
civil engineering courses, community of inquiry, online discussion forum, problem based learning, soil mechanics

Topic
Engineering Education Research

Link: https://ifory.id/abstract/g8Bk3fRQ46Fy

Corresponding Author
Rifqi Putrayesa

Institutions
a) School of Electrical Engineering, Telkom University, Jalan Telekomunikasi no 1, Bandung, 40257, Indonesia
rifqiyesa.putra17[at]gmail.com
rizkia[at]telkomuniversity.ac.id
b) Diploma of Telecomunication, School of Applied Science, Telkom University, Jalan Telekomunikasi no 1, Bandung, 40257, Indonesia
denny.darlis[at]telkomuniversity.ac.id

Abstract
To improve services for train passengers, a tool that can display information to train passengers is needed. This information can be displayed on PIDS. PIDS serves to provide information in the form of the location of the train based on GPS coordinates then other information displayed in the form of the trains name, train number, wagon number, and the station the train will pass to. To display this information, PIDS uses components such as GPS, LED Matrix Display, Micro SD Card, which are then controlled by an algorithm using a microcontroller. The goal is to provide information to train passengers so can reduce errors that occur when the train passengers ride the train. In examination, PIDS can display all the information needed by passengers, although there are still some shortcomings such as amount of data that can be accessed from the Micro SD Card is only limited to 30 coordinate data. With the limited data that can be stored, it is very possible the occurrence of limitations in the number of coordinates of the station to be passed by the train in accordance with the route of the train

Keywords
PIDS, GPS, LED Matrix Display, Microcontroller, and Micro SD

Topic
Electrical Engineering

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

Corresponding Author
I Made Wiwit Kastawan

Institutions
Department of Energy Conversion Engineering, Politeknik Negeri Bandung
Jl. Gegerkalong Hilir, Bandung Barat, Jawa Barat, Indonesia
E-mail: wiwit.kastawan[at]polban.ac.id, erwin.yusuf[at]gmail.com, afiffadhilah.erg[at]gmail.com

Abstract
This paper presents a detailed description about design of phase shifting transformer to reduce source current harmonic generated by variable speed drive (VSD) units commonly used for controlling speed of hot air blower motors of a stenter machine in textile industry. Nine units of VSD are used in a stenter machine of a selected textile industry that generates source current with relatively high harmonic content. Total harmonic distortion (THD) figure of the source current varies from 43.91% to 50.34%. The source current contains all odd order harmonics except triplen ones. A method proposed to reduce this source current harmonic is by using phase shifting transformer. Two different phase shifting transformer arrangements are possible. The first one is arrangement of three phase shifting transformers. The other one is arrangement of nine phase shifting transformers. Arrangement of three phase shifting transformers uses Yy, Yz1 and Yz2 three-phase winding connection to produce phase shifting of 0, 20 and –20 respectively. Meanwhile, arrangement of nine phase shifting transformers uses one Yy three-phase winding connection with 0 phase shifting, four Yz1 three-phase winding connections with 6.67, 13.34, 20 and 26.67 phase shifting respectively and four Yz2 three-phase winding connections with –6.67, –13.34, –20 and –26.67 phase shifting respectively. Results from simulation using MATHLAB SIMULINK show that harmonic content of the source current reduced significantly. THDs of the source current drop to 1.99% and 1.74% respectively when arrangements of three phase shifting transformers and nine phase shifting transformers are used.

Keywords
current harmonic, phase shifting, three-phase transformer, THD, VSD.

Topic
Electrical Engineering

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

Corresponding Author
Try Hikmawan

Institutions
a) Sekolah Pascasarjana, Universitas Pendidikan Indonesia
b) Universitas Pendidikan Indonesia

Abstract
The application of an electronic records management system is expected to have a positive influence on employee motivation. The purpose of this research is to learn from the use of an electronic archive management system regarding the work mechanism of employees at the KPw Bank Indonesia, West Java Province. The research method uses quantitative research methods. The focus of research on the use of an electronic archive management system is being applied. This study uses data analysis methods such as interviews and documentation as well as data analysis methods used using descriptive analysis methods. Based on the results of research on the use of electronic records management systems can increase employee motivation.

Keywords
electronic, records management system, employee, motivation, bank, web 3.0

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/3QzmgBderUwj

Corresponding Author
Fadillah Ramadhan

Institutions
a) Department of Industrial Engineering, Institut Teknologi Nasional (Itenas)
Jl. PHH. Mustofa No. 23, Bandung 40124, Indonesia
* f.ramadhan[at]itenas.ac.id

b) Department of Industrial Engineering, Telkom University
Jl. Telekomunikasi No. 1, Bandung 40257, Indonesia

Abstract
The transportation routing problem is a very popular field in operations research and management science area. Many previous studies are still continuing to develop models and algorithms to produce the best transportation route optimization in various research objects. Technology has enabled the development of the intelligent decision support system (DSS) to optimize transportation route. Although technology has evolved, there are still few studies that build DSS software to minimize transportation distance and fuel consumption, especially using the metaheuristic approach. Thus, this paper aims to develop an intelligent DSS software to minimize fuel consumption and travel distance by considering time windows constraint using metaheuristic approach. The software can receive input dynamically to evaluate and select the best transportation route. The results of this software have been tested using real system data from one of tour and travel company in Indonesia. The company provides travel services using a bus to visit several tourist attractions based on the opening hours of the destinations. Intelligent DSS software output shows that the travel distance is 25.64% more efficient than the current real conditions. In addition, the fuel consumption produced by DSS is better than the actual conditions, which is 17.35% more efficient.

Keywords
DSS, Fuel Consumption, Metaheuristic, Time Windows, Routing

Topic
Industrial Engineering

Link: https://ifory.id/abstract/NwdRKr9BZYUP

Corresponding Author
Suherman Dwi Nuryana

Institutions
a) Department of Geological Engineering, Faculty of Earth Technology and Energy, Universitas Trisakti.
Jl. Kyai Tapa No. 1, Jakarta 11440, Indonesia
* suhermandwi[at]trisakti.ac.id
b) Department of Geological Science, Faculty of Geological Engineering, Universitas Padjadjaran

Abstract
South Cipete area is a highly populated area, where the extraction of groundwater is very intensive, so that the allocation of groundwater has decreased in term of quality and quantity. The purpose of this study is to determine the type of aquifer and groundwater hydrochemistry. Research methods are include field observations, groundwater sampling, physical properties measurement and chemical analysis of the main ions as well as description and correlation of drill log data. Based on the northwest-southeast cross section of lithology log, the aquifer types are: stressed aquifers composed of sandstones and silt; semi-stressed aquifers composed of clays and conglomerates at depths of 10 m to -15 m. From the southwest-northeastern cross section, the type of aquifer are: stressed aquifer composed of sandstones with clay; free aquifer buried by backfill materials and silt.soils; and semi-stressed aquifers, surrounded by silt and clay sandstones, at the depths of ± 23 m to ± 3 m. Groundwater hydrochemistry in the sample SG/02, SG/04, SG/08 the dominant cations and anions are Na+ + K+ with a value of 56.56%; 57.13%; 25.03% and HCO3- at 26.91%. While in sample SG/06, SG/07 the dominant cations and anions are Mg2+ at 25.81%; 24,52% and anions SO42- at 32.70%; 30.96%.

Keywords
Hydrochemistry, Aquifer, Cipete, Cation, Anion

Topic
Environmental Engineering

Link: https://ifory.id/abstract/ndF74wzuWNCp

Corresponding Author
Luki Wijaya

Institutions
a,b,c) Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Jawa Barat 16424, Indonesia
a*) luki_wijaya96[at]yahoo.com
b*) yusuflatief73[at]gmail.com
c*) rossyarmyn[at]gmail.com

Abstract
In government buildings, facilities and infrastructure that can support the fulfillment of a function are needed, but the longer the buildings are in use then they will suffer damage from various aspects such as architectural components of the buildings. To reduce the occurrence of damage to buildings there is a need for preventive maintenance works. Preventive maintenance works could include a action taken to prevent the need for repairs. In the preventive maintenance work process of a building, the scope of work can be arranged using Work Breakdown Structure (WBS). So, that a structured grouping and oriented activities can be obtained and also works done in the project can define the overall scope of the project. But in the case of the government buildings, guidance provided by preventive maintenance works using WBS standards are lacking. Therefore, guideline development for preventive maintenance works is an important to improve the performance of maintenance. The purpose of this study is to develop guidelines for WBS based preventive maintenance works of architectural component of a government building. Research methodology includes several stages, namely the literature study, analysis of archival data and information from related studies and projects, case study, through validation with experts. The results of this research is in the form of guideline for WBS based preventive maintenance work for architectural component of government buildings that can improve the quality of the building and the effectiveness and efficiency of the maintenance of the building.

Keywords
government building, guideline, preventive maintenance, work breakdown structure

Topic
Civil Engineering

Link: https://ifory.id/abstract/a34YxPrUchpd

Corresponding Author
Dudi Nasrudin Usman

Institutions
Department Of Mining Engineering, Faculty of Technology, Bandung Islamic University

Abstract
This research was carried out in the Mount Mandalawangi region of West Java Province. The research objective is to explore the potential sources of springs in supporting the development of the region so as to encourage the economic potential of the community. The methodology used was geological mapping, spatial mapping, mapping of socio-economic conditions, mapping of water demand levels, which were evaluated using the Terrain Genetic Unit method. The area around Mount Mandalawangi is a relatively fertile area has ±36 points of springs, the discharge ranges from 0.00003 m3/sec-0.587 ltr/sec. The dominant lithology is the Mandalawangi (Qmm) Mountain consisting of glass tuffs containing pumice, and lava composed of pyroxene andesite to basalt. The results of the study using the Terrain Genetics Unit method there are 3 zones that have the potential to develop springs based on the region, Andesite Plateau, Corrugated Hills of Lapili Volcano and Corrugated Hills of Tuff Breccia Interferenc. The analysis is that regional development can be planned to the maximum by prioritizing the source of spring with a note that there needs to be an arrangement for the source of existing springs.

Keywords
Mount Mandalawangi, Terrain Genetics Unit, East Bandung and Spring Resources.

Topic
Mining Engineering

Link: https://ifory.id/abstract/bENBHUVqPR4y

Corresponding Author
Lusianus Kusdibyo

Institutions
Politeknik Negeri Bandung

Abstract
An online train ticketing system has been introduced by Indonesian Train Company called KAI Access, despite some online platforms introduced earlier by private providers. While older generation may have difficulty in using the online platform, the millennial generation who mostly are university students is faster in mastering the platform, including the online ticketing system. The purpose of this study is to determine university students- perception of the Technology Acceptance Model (TAM) variable and measure the effect of the variable Perceived Ease of Use, Perceived Usefulness, and Attitude Towards Usage on Behavioral Intention. Questionnaires were distributed to university students who have using KAI Access train ticketing system. From 350 data collected, 335 data were valid for further analysis. Variance-based SEM PLS was used to determine the relationship between variables. The results show that Perceived Ease of Use and Perceived Usefulness have direct positive and significant effect on Behavioral Intention, while Attitude Towards Usage has no significant influence on Behavioral Intention. The implication for management is to provide better ticketing system which can create users- positive attitude to use it. Further research may compare among online ticketing service systems and involve other variables to predict consumers- attitude and behavioral intention.

Keywords
Perceived ease of use, perceived usefulness, attitude, behavioral intention, online train ticket systems

Topic
Computers, Internet, Multimedia in Engineering Education

Link: https://ifory.id/abstract/dMv2kPQBgxpN

Corresponding Author
Dudi Nasrudin Usman

Institutions
Mining Engineering Department, Faculty of Technology, Bandung Islamic University

Abstract
Gold deposits are economic deposits, the formation of gold deposits in nature is one of them epithermal gold deposits in the Au-Ag mineralized zone. Gold mineralization is influenced by a hydrothermal solution that flows through rock permeability, resulting in an alteration process that changes the chemical composition, mineralogy, and texture of the original rock. One variable that affects the presence of veins carrying valuable ore minerals is fracture structure. This study aims to determine and analyze the relationship /correlation of rock solids to the level of gold deposits using the correlation regression method. The methodology used is massive data collection through geological mapping, log-drill data analysis, Data Assay analysis, data processing and analysis assisted by using correlation regression through validation and verification of drill data. The results of processing and analysis of muscular data notified by the RQD value and log-drill data obtained the results of multivariate normality test based on the Au model = 8,219-2761 RQD and Ag = 90,388 + 0.977 RQD as follows: 1) When the RQD is zero, then the Au will be valued amounting to 8,219. However, when the RQD increases by 1 unit, the Au will decrease by 2,761. 2) When the RQD is zero, then Ag will be worth 90,388. However, when the RQD rises by 1 unit, then Ag will rise by 0.977. Then the Meaning Mean Test is performed where the result H0 is Received, with the understanding that there is a significant relationship between RQD on Au-Ag levels, understanding that the change in thickness of a thicker ore is followed by an increase in the higher Au level, tcount = 0.382 and the significance is 0.703. The understanding is that Au levels are correlated with the presence and presence of hefty that is notified by RQD.

Keywords
Au-Ag Mineralization, Correlation Regression, RQD and Grade of Gold

Topic
Mining Engineering

Link: https://ifory.id/abstract/uZX2K4CcQrHh

Corresponding Author
Tonny Judiantono

Institutions
Magister of Urban and Regional Planning,
Post Graduate Faculty,
Islamic University of Bandung,
Bandung, Indonesia

Abstract
Agrotourism is a tourism activity using agro-business since beginning to end agriculture products in any system, scale and form as tourism object, with aims to widening knowledge, travelling, recreation, and business relationship in agriculture. Infrastructure divided into: hard infrastructures (such as road, irrigation, drainage, electric network, clean water piping, communication network, sewerage, and waste management); and soft infrastructures ( such as policy, institution, regulation, finance, research and development). This research take Kabupaten Karo as case study which have agrotourism attraction, such as fruit horticulture, vegetables, and flowers plantation, spread almost at 17 Kecamatan in Kabupaten Karo, North Sumatera, Indonesia. By using AHP (analytical Hierarchy process), is an analytical method for decision making with comprehensive characteristic, to handle complicated problem, multi attribute, qualitative and quantitative scope. As research result, decision with preference to get the biggest benefit value in short time for local government, and for Kabupaten Karo-s peoples, is getting order priority provision start by soft infrastructure repairing first, then provision hard infrastructure; that is the best combination appropriate with agrotourism potential condition and availability of development fund at Kabupaten Karo.

Keywords
Agrotourism; Hard Infrastructure; Soft Infrastructure; Analytic Hierarchy Process; Determining Priority.

Topic
Civil Engineering

Link: https://ifory.id/abstract/yY4bmwUf7gt6

Corresponding Author
Eddy Erham

Institutions
a).Department of Refrigeration and Air Conditioning, State
Polytechnic of Bandung (POLBAN), Bandung, Indonesia.
* eddy.erham[at]polban.ac.id

b).Alumnus of Department of Refrigeration and Air
Conditioning, State Polytechnic of Bandung (POLBAN),
Bandung, Indonesia.

Abstract
Air Conditioner (A/C) is a system of air conditioning which serves need of thermal comfort inside a room. On one side, it is an advantage. However, on the other side, the energy consumption of A/C is the biggest in household appliances. In this paper, to solve the problem was designed the control system and display of A/C based on Arduino Uno. In this case, the Arduino was uploaded with a program of control system so that it can function as a controller. Whereas, the display was designed using the Blynk that is supported a Smart-phone and Internet network. The results showed that the response of designed control system is able to maintain the desired temperature with range of error from 0.0 C to 0.2 C and the A/C can be set and monitored from far away via internet. In addition, although, a client and the A/C were separated by distance, the response was almost not delay and stayed accurate. Moreover, it was predicted that the using of proposed A/C in illustrated situation can save energy by 50%.

Keywords
A/C, control system, Blynk, internet, energy saving

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/xcd4EXuJpDM6

Corresponding Author
Afdhal Lazuardiansyah Ramdhani

Institutions
Department of Civil Engineering Bandung State Polytechnic (POLBAN)
afdhal.lazuardiansyah.mtri19[at]polban.ac.id

Abstract
Abstract. Ciodeng Bridge is a suspension bridge located in Rancamanyar, Regency of Bandung. The bridge that connects Parunghalang Village and Seketi Village is used for motorbikes and pedestrians. Overcrowding on the bridge are frequent due to unqualified traffic capacity. Excessive traffic loads and lack of maintenance damaged some bridge components. To increase capacity and provide security, it-s necessary to design a new suspension bridge next to existing bridge thus one way system can be applied to both bridges. The design refers to "Manual for Design and Build of Suspension Bridge for Pedestrian". The suspension bridge is modeled using MIDAS Civil 2019. The output of the software is the internal forces consisting of moments, shear and normal forces used to design section properties and connection models. Based on the design, obtained dimensions of the main girder IWF.250.125.9.6, cross girder 150.100.9.6, secondary girder C.50.45.5.7, pylon 250.250.14.14, bottom bracing L.50.50.5, main cable diameter 60 mm, the hanging rod diameter 20 mm, and wind cable ties diameter 20 mm. The suspension bridge is carried out using the sliding deck method and requires material cost without calculating labor and equipment in the amount of Rp.1.102.592.823,- (based on price in 2019).

Keywords
Density, one way, design, MIDAS Civil

Topic
Civil Engineering

Link: https://ifory.id/abstract/kG9ndtDC2gAZ

Corresponding Author
Septia Puspita Silma

Institutions
Department of Architectural Education
Faculty of Technology and Vocational Education
Universitas Pendidikan Indonesia
Jalan Dr. Setiabudhi No. 207 Bandung 40154 Indonesia

Abstract
This paper aims to measure specific life skill of students attending Building Modelling Design and Building Information program (DPIB) based on the National Qualification Competency Certification Scheme in the field of Building Construction Drawing. This research utilized descriptive quantitative method. The sampling was drawn from eleventh grade students of Vocational High School 1 Cilaku Cianjur using purposive sampling method. The measurement criteria is adjusted with competence test requirement referring to standards set by National Board of Professional Certification (BNSP). Data collection process was done by using competence test simulation. The findings of this research indicate that: (1) the specific life skill level was classified as good, as indicated by the achievement percentage of 80%. The on-site drawing was the component with the highest level of achievement; (2) the work readiness level was classified as good, as indicated by the achievement percentage of 82%. The highest level of measurement was in the flexibility and self-view. The high level of students- specific life skill in accordance to the national competence standard indicates that students have met the competence standard needed by the world of work. They are competent to be drafters in building construction drawing field of expertise. However, further study is needed to examine the mismatch between the supply of workers with such competence and the availability of employment in the building construction-s world of work.

Keywords
Specific life skill; work readiness; competence test

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/LzEdYgw67RWJ