Indonesia Conference Directory

Corresponding Author
Deni Heryanto

Institutions
Department of Informatics, Sekolah Tinggi Teknologi Garut, Jalan Mayor Syamsu 1, Garut, Indonesia

Abstract
This article discusses the design of a cloud computing based knowledge management system, the purpose of this study is to integrate KMS with Cloud Computing to improve the organizations business processes and make recommendations on Cloud Computing-based KMS concepts. The method proposed in this study was to use Scrum, Scrum exposes the ineffectiveness of product management and work techniques that were carried out, so as to continuously improve the resulting performance, team, and environment work in the company. The KMS design was started from data analysis which became the determining factor for KMSs success in the organization by using critical success factors and Balanced scorecards which focused on learning and growth, referring to the core knowledge management process based on cloud computing.

Keywords
Knowledge Management System; Scrum; Core Process; Cloud Computing; System Recommendation

Topic
Information Engineering

Link: https://ifory.id/abstract/9dMfEUJa8ZcW

Corresponding Author
Jaja Kustija

Institutions
Universitas Pendidikan Indonesia

Abstract
Today condition in learning mechatronics subject, especially at Universitas Pendidikan Indonesia Departemen Pendidikan Teknik Elektro still uses learning object and software simulations. This still has not maximized students competency, which is required to be skilled in real engineering that will be applied both in the industry and in educational institutions. According to the Universitas Pendidikan Indonesia research master plan which establish its vision to be a Pioneer and Superior University in the field of education, then research on learning innovation is directed to aspects of learning, that is research on learning models, learning media, organizing learning implementation plans, organizing learning materials, and evaluation systems. Based on the above idea, the researcher propose to develop a learning media that is corresponding with the requirement of mechatronics subject in the competency based on applicative design mechatronics simulator. The method used in this research is quantitative method with research and development approach. The excellent research of the college with the title "Design Mechatronics Simulators to Improve the Quality of Student Learning On Mechatronics Subject" is a research needed to implement a design that to improve learning outcomes and students competency

Keywords
Simulator, Learning Media, Learning Outcomes

Topic
Electrical Engineering

Link: https://ifory.id/abstract/geCGYBtXuPN9

Corresponding Author
Edi Mulyana

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
The impressed current cathodic protection is one of the effort to prevent a metal from corrosion by supplying electricity to metal objects. However, the protection system that supplies electricity must always be monitored so that the electricity intake to the metal object is sufficient to protect it from the corrosion. The way how to monitor the electricity intake to the metal is to read the current intaking on the metal. To read the electric current more easly is to use an application software. This research talk about the application design to display the electric current intaking on the metal through the computer screen. In order to read the electric current directly, the Advantect Data Acquisition Modul (ADAM) devices are used. The results show that the appliation is able to display the value of protection current for iron plate steel with size 30x10 cm are between 0.15 A to 0.18 A while for iron plate with a size of 30x13 cm are between 0.20 to 0.24 A. These values also avoid the over protection.

Keywords
Cathodic protection, Corrosion, Data Acquisition Module, Application

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/QkfUdVLtT2rx

Corresponding Author
Yusuf Mauluddin

Institutions
Departement of Industrial Engineering
Sekolah Tinggi Teknologi Garut

Abstract
This study discusses the design of a production control board in the home industry. The home industry that implements a response strategy to consumers is make to order, and a production system strategy is a flow shop. The design of the production control board is intended as a tool to see when an order starts and finishes, the position of the order, when to accept orders, and the production capacity owned. Home industry that is the object of research is bag home industry. The research methodology is a case study and the model used is a modification of the Gantt chart. The design results show the production control board is able to work as a tool in planning and controlling production activities.

Keywords
Production control board, home industry

Topic
Industry Engineering

Link: https://ifory.id/abstract/vGZ4quAP9aHc

Corresponding Author
Ratna Widyati

Institutions
Universitas Negeri Jakarta

Abstract
Filing or filing system is a system to find out how to store data from certain files and file organization used. Access system is a way to retrieve information from a file. Data representation consists of two, namely logical data that represents data at the conceptual level as well as physical data, namely data that has been prepared which is the final result of logical data and usually stored in storage media. Case studies taken on the filing of quality assurance in the study program environment that cover the fields of academics, student affairs and infrastructure.

Keywords
filing system, logical data, physical data

Topic
Computer Science

Link: https://ifory.id/abstract/FuwdGxLAD9YZ

Corresponding Author
Efri Sandi

Institutions
Department of Electrical Engineering, Universitas Negeri Jakarta
Jalan Rawamangun Muka Jakarta Timur, Indonesia 13220

Abstract
In this paper a new design of substrate integrated waveguide was developed to improve the gain performance of microstrip antennas for 5G antenna applications. The antenna and substrate integrated waveguide was designed at freq 28 GHz millimeter-wave band. The design of substrate integrated waveguide was developed by design an H-slot structure without gap in the substrate layer to provide better matching impedance and reduce loss of surface wave microstrip antenna. This study was conducted with a research and development approach through the calculation of the H-slot structure on substrate integrated waveguide and simulated by using antenna design software simulation. The numerical result shows that new design of H-slot structure without gap model was improved antenna return loss more than 8 dB and bandwidth more than 1 GHz . This result has shown a significant improvement compared to antenna design without using substrate integrated waveguide.

Keywords
H-Slot Design; Substrate Integrated Waveguide; Gain; 5G Antenna

Topic
Electronics Engineering

Link: https://ifory.id/abstract/Gt7pgnqmyhxc

Corresponding Author
Baso Maruddani

Institutions
Baso Maruddani (a,b*), Mufti Ma-sum (a), Efri Sandi (a), Tipla Daniati (c)
a) Engineering Faculty,Universitas Negeri Jakarta
Jalan Rawamangun Muka, Jakarta Timur 13220, Indonesia
*) basomaruddani[at]unj.ac.id
b) DJA Institute
Apartemen The Green Pramuka City, Tower Fagio
Jl. Jendral Ahmad Yani Kav. 49. Rawasari, Cempaka Putih, Jakarta Pusat 10570
c) Vocational High School 10
Jalan Servas, Jatimelati, Pondokmelati, Bekasi, West Java, 17415, Indonesia

Abstract
This study is aims to design a Low Noise Amplifier (LNA) with two stage cascade configuration at frequency of 2.4 -2.5 GHz. The transistor that used in this study has characteristic of high gain and low noise. The design is using microstrip line matching network with single stub technique to minimize parasitic effects. Transistor is using cascade configuration to produce high gain and improve the stability. The simulation results show that the LNA has reached all of expected specification at frequency of 2.45 GHz where S21, NF, S11, S22 are 30.693 dB, 1.248 dB, -70.358 dB and -72.982 dB, respectively; Also other values VSWR input, VSWR output, stability (K), input impedance and output impedance at 50Ω are 1.001, 1.0004, 5.280, 50.010 + j0.029 and 49.991 + j0.02, respectively. The measurement results show that at frequency of 2.45 GHz, LNA obtained value of S21, S11, S22, VSWR input, VSWR output are 22.17 dB, -4.117 dB, -13.049 dB, 4.297 and 1.572, respectively. Whereas, the best measurement of S21 is 24,05 dB at frequency of 2.05 GHz), S11 is -5.700 dB at frequency of 2.0 GHz , S22 is -27.570 dB at frequency of 2.045 GHz, VSWR input is 3.07 at frequency of 2,0 GHz and VSWR output is 1,09 at frequency of 2.045 GHz.

Keywords
LNA; Cascade; Voltage Divider, Mictrostip Line Matching Network, VNA

Topic
Electronics Engineering

Link: https://ifory.id/abstract/m9zfw7UvuZbA

Corresponding Author
Muhammad Aria

Institutions
Departemen Teknik dan Ilmu Komputer,Universitas-Komputer-Indonesia,Indonesia
Departemen Teknik dan Ilmu Komputer,Universitas Komputer Indonesia,Indonesia
Departemen Teknik dan Ilmu Komputer,Universitas Komputer Indonesia,Indonesia

Abstract
The purpose of this study is to describe the design of information systems for ordering goods in manufacturing companies and can facilitate the companys operations, especially in marketing products to customers. The method used in this paper uses a descriptive method, a method that presents a complete picture of the situation related to several variable situations that are examined. The results of the design and research show that a web-based goods ordering system is useful to help customers order items without having to come directly to a manufacturing workshop. This research was conducted by discussing the system of procurement of goods, processing of goods and shipping of goods carried out by the company using it website service.

Keywords
Information System , web design

Topic
Computer Science

Link: https://ifory.id/abstract/hM9TLw2JRNpz

Corresponding Author
BAMBANG HERU ISWANTO

Institutions
*Department of Physics Education, Universitas Negeri Jakarta, Jakarta 13220, Indonesia
**Department of Physics, Universitas Negeri Jakarta, Jakarta 13220, Indonesia

Abstract
The purpose of this research is to develop a design for MOOCS with Virtual Microscopic Simulation (VMS) for students levels of understanding. The research method used is the Embedded Experiment Design with the research subjects as many as 45 students- in one of campus in Banten Province, Indonesia. The results showed that the Level of Comprehensive Understanding (CU) was 76.67%, Level of Understanding of Partial Understanding (PU) was 15.56%, and Level of Misunderstanding (MU) was 5.56%, Level of Not Understand (NU) of 2.22% and the lowest level of No Answered (NA) of 0%. It was concluded that the average level of understanding experienced a significant increase with learning through MOOCS with VMS on the concept of electricity.

Keywords
MOOCS; Virtual Microscopic Simulation (VMS); levels of understanding

Topic
Computer Science

Link: https://ifory.id/abstract/R2BPXdATVQUZ

Corresponding Author
Vera Maya Santi

Institutions
a) Department of Sports Branch Training, Faculty of Sports Science, Universitas Negeri Jakarta
b) Department of Computer Information Engineering Education, Faculty of Tehnics, Universitas Negeri Jakarta
c) Department of Statistics, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta

Abstract
A good education system has a looping system in which the responsibility of higher education for students does not end at graduation but also related to the sustainability of graduates careers so that they are better prepared to work in the community. The purpose of this study is to develop a one-door Tracer Study Information System managed by universities to improve the quality of graduates through improving the education process. The results of the tracer study as feedback are expected to be an input for the education system, curriculum, student activity direction, and UNJ policies which include the development of student hard skills, soft skills, and life skills. A reliable tracer study system is due to the availability of adequate resources, namely information systems, survey teams, publications, also the reward and punishment given to respondents. The prototype was developed using the waterfall method which went through several stages specifically needs analysis, system planning, system design, system design, and system development. After the system was developed in the form of a prototype, then the prototype was tested using black box testing. Based on the functional test, it is known that all functions of the system prototype are running according to plan.

Keywords
Tracer Study; Graduates; Sistem Informasi; Prototype

Topic
Information Engineering

Link: https://ifory.id/abstract/QbtK4hzLq7Hp

Corresponding Author
Muhammad Taufiq Fathaddin

Institutions
a)Petroleum Engineering Department, Universitas Trisakti, Jakarta, Indonesia
b)Pertamina Hulu Energi Tuban East Java, Jakarta, Indonesia
*)muh.taufiq[at]trisakti.ac.id

Abstract
Pressure Build-Up Analyses on a heavy oil well would give an inconclusive result on pressure derivative curves. Some kind of Thermal Injection should be performed prior to implementing the operation of Pressure Build Up test, where the heat will lower the heavy oil reservoir fluid. Sensitivity of several parameters namely viscosity, permeability, porosity, and shut-in time were used in designing Pressure Build Up test. The model also has an outer boundary. This sensitivity would give various reservoir reach of the test or radius of investigation. The sensitivity test showed that viscosity influences more on radius investigation as compared to permeability, porosity, and shut-in time. Since the Pressure Build Up test must reach radial flow period before pressure transient arrives at the nearest boundary, the test scenarios with viscosity range from 5.602 to 24.796 cp were suitable for the well. Furthermore, the study was continued to correlate radius of investigation as a function of the parameters mentioned above. A constant value of the correlation obtained from this study was 1197.

Keywords
Pressure Build Up Test, Pressure Derivative, Heavy Oil, Radius Investigation

Topic
Civil Engineering

Link: https://ifory.id/abstract/8U3NV7rWFkmC

Corresponding Author
Muhammad Rikza Nashrulloh

Institutions
Department of Informatics Engineering
Sekolah Tinggi Teknologi Garut

Abstract
Although franchise considered as a business system that has many features, that does not mean this business concept does not have weaknesses. Indeed, its been hundreds of years the format of this business is running. Even today the franchise business is getting its place as a proven business format and successfully delivering thousands of business brands across various continents and times. If the franchisor is less selective in choosing a franchisee, they may damage the franchisors image and business brand as a whole. The reason is if one franchisee does not comply with the operational standards provided by the franchisor then results in customer disappointment, it is not impossible that this customer will perceive all other outlets as bad. Using an innovation assimilation strategy framework, this paper describes how franchise organization used its implementation of a Smart Dashboard System to improve performance, allows franchisors to keep a handle on their franchise accounts and put it on a path towards digital leadership.

Keywords
Digital Leadership, Smart Dashboard System, Franchise, Design

Topic
Information Engineering

Link: https://ifory.id/abstract/mcMdzgVpUn7R

Corresponding Author
Muhammad Rikza Nashrulloh

Institutions
Department of Informatics Engineering
Sekolah Tinggi Teknologi Garut

Abstract
Startup is becoming a trend in Indonesia. Various success stories from local startups such as Gojek, Tokopedia or Bukalapak, has become trigger for the emergence of new startups. The potential of internet users in Indonesia which is increasing from year to year is also a catalyst for establishing a startup. At an early stage, startup must identify user experience priorities and problems in developing software product phase. This chapter describes work in progress on a shortened version of Design Sprint approach, and its application to designing Software product in Startup. Google Ventures initially introduced Design Sprint to tackle critical business problems and come up with viable solutions within five days.

Keywords
Design Sprint, Design, UX, Software Development, Startup

Topic
Information Engineering

Link: https://ifory.id/abstract/KVPDfwEa7Ruy

Corresponding Author
Asep Deddy Supriatna

Institutions
Department of Informatic Engineering, Sekolah Tinggi Teknologi Garut, Jl. Mayor Syamsu No. 1, Garut 44151, Indonesia

Abstract
Database design can be done using a relational approach. In this type of relational database, there is a clear description of the relationship between a table and another table that can do; this relationship described as a solid line that connects one field name to one table, with one name field in the other table. This situation will produce an integrated and accurate database design. Managing student data manually, for various information needs on different management lines both horizontally and vertically, will cause several problems. These problems are related to accuracy and response time. It is because each identified file is independent so that when a search for records or data is made difficult and the data accuracy not maintained because of data redundancy. Based on the conditions above, in this study, a database of student data management will be conducted using the relational approach. From the resulting menu system and the interface shown, concluded that the database design of student data management using the relational approach has been able to accommodate data and information needs relevant to business processes that occur within the student data management system.

Keywords
DATABASE; RELATIONAL;STUDENT DATA

Topic
Information Engineering

Link: https://ifory.id/abstract/6eVt2Uc8TEug

Corresponding Author
Andika Raja Sonang Munthe

Institutions
a) Department of Civil Engineering, Sekolah Tinggi Teknologi Garut, Jalan Mayor Syamsu 1, Garut, Indonesia
*andika.rsm[at]sttgarut.ac.id
b) Department of Informatics, Sekolah Tinggi Teknologi Garut, Jalan Mayor Syamsu 1, Garut, Indonesia

Abstract
CBHRM is one of the developing patterns of human resource management in Indonesia. In this approach, competence becomes a keyword. Every employee will be assessed based on the competencies they have. In order for the results to be more optimal, a good report / output presentation model is needed. One solution that the authors propose is to use a digital dashboard model. This dashboard model is built using a framework that has been adapted to the life cycle of the model. Case studies are carried out on regional development companies, and CBHRM digital dashboards built consisting of Talent Dashboards, Competencies Gap Dashboards, and Comparison Dashboards are interrelated with each other.

Keywords
CBHRM; dashboard; competencies

Topic
Information Engineering

Link: https://ifory.id/abstract/2AUTNW9v8cme

Corresponding Author
Helfy Susilawati

Institutions
Electrical Engineering Departement, Universitas Garut

Abstract
Water discharge is a measure of the amount of water volume that can flow or be disposed in a place in one unit of time. The research goal is to calculate the amount of water discharge and the bill for every use of water that has been used by the customer. Monitoring the use of water discharge will use the IoT (Internet of Things), with a microcontroller as a processor or input and output processing of the sensor used. The sensor used in this plan is the water flow sensor using ESP8266 module through the Internet as a data communication between tool and software. The data transmitted is water discharge in each use of 10 liters. This research will use prototyping method to know about the use of water and the price that must be paid each month from customer-s phone. The form of application is web that is created for the admin (Server) and Android application for the customer. On the next process, this design can be directly applied for the use of calculation of discharge and the bill for local government.

Keywords
IoT, Microcontroller, Water Discharge

Topic
Electrical Engineering

Link: https://ifory.id/abstract/GPnTZf4NKDzm

Corresponding Author
Lia Warlina

Institutions
Universitas Komputer Indonesia

Abstract
The purpose of this research is to discuss about designing websites for agriculture. The method used in this study is a descriptive method to help describe the whole through pictures to be easier to understand. The results of this study are a website to improve and win business competition as a field of promotion and sales of production. In the process of using e-commerce the activities of buying and selling or marketing are more efficient where the use of e-commerce will show the ease of promotion, transaction, reduction of costs and speed up the transaction process.

Keywords
Designing Websites, Business, and Agriculture

Topic
Computer Science

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

Corresponding Author
Erlillah Rizqi Kusuma Pradani

Institutions
State Polytechnic of Malang

Abstract
This paper discusses a reaction wheel control system. A reaction wheel pendulum is good example of a non linear and underactuated system, which attracts control system researchers to develop many control algorithm. The reaction wheel plant is usually used for studying advanced control system courses. In this paper, a mathematical model of the state space is discusses. A proposed LQR (Linear Quadratic Regulator) control algorithm is explained. Simulation and real time experiments have seen carried out to varify the performance of the proposed closed loop system. The LQR (Linear Quadratic Regulator) optimisation algorithm was able to find the optimum feed back gains. The simulation and real time experiments show that the reaction wheel pendulum could stabilize the pendulum at upright position.

Keywords
Reaction Wheel Pendulum; State Space; LQR Method

Topic
Electronics Engineering

Link: https://ifory.id/abstract/y9QdTceBVaHY

Corresponding Author
Zulkarnain Jalil

Institutions

1Department of Physics, Syiah Kuala University, Banda Aceh 23111, Indonesia
2Department of Mechanical Engineering, Syiah Kuala University, Banda Aceh 23111, Indonesia
3Department of Physics, Jakarta State University, Jakarta, Indonesia

Abstract
The objective of this study is to improve the hydrogen desorption temperature and the hydrogen desorption capacity. The material preparation was done through mechanical alloying technique. In this method, the milling of the material was carried out within 5 hours, 10 hours and 15 hours, ball to powder ratio was 10:1. The catalyst was inserted by 10 wt%SiC. From XRD measurements revealed that the sample was successfully reduced to a nanocrystalline scale. The phase MgH2 as the main phase, and followed by Ni and SiC phase as the minor phase. The microscopy observation with SEM showed the irregular particle shape, the particle size in the sample is not homogeneous because of the agglomeration effect during milling. The hydrogen release capacity was obtained in the samples which were milled for 10 hours at the weight of 5 wt% Ni-SiC catalyst with release of 2.6 wt% within 16 minutes.

Keywords
Magnesium, hydrogen storage, mechanical alloying, catalyst, desorption

Topic
Material Science

Link: https://ifory.id/abstract/hfKQARG4Ee3w

Corresponding Author
HENDRA PRADIBTA

Institutions
Information Technology Department
State Polytechnic of Malang

Abstract
Acrophobia (altitude phobia) is a type of phobia that makes an individual feel, anxious, tension, and discomfort at height. To overcome this problem, need to escort by a psychiatrist/psychologist to cure the disease and by using a therapeutic approach or behavior method commonly called CBT (Cognitive Behavioral Therapy). This therapy will force sufferers to fight their fears. Current technology called virtual reality was chosen to deal with people with Acrophobia. Through visual reality can provide a 3D-shaped artificial environment that can help sufferers strictly fought the phobias they experienced, but the technology is still not affordable. Therefore, it is necessary to have appropriate technology for therapy needs. By using the Multimedia Development Life Cycle, as a development method, Forward Chaining as a phobia level calculation method, as well as Google Cardboard and Unity 3D is expected to overcome this problem.

Keywords
Acrophobia, Therapy, Virtual Reality

Topic
Computer Science

Link: https://ifory.id/abstract/Dy3AGfqY8mph

Corresponding Author
Yhana Mulyaningsih

Institutions
Faculty of Engineering, Sampoerna University
Jl. Pasar Raya Minggu No 16, Jakarta Selatan, Indonesia

Abstract
Lignin is difficult to be decomposed due to its complicated carbon bonding. Previous studies have discovered that ligninolytic enzymes effectively degrade lignin waste. Numerous microorganism such as white rot fungi have been taken into account to accelerate the decomposition process of lignin. The aim of this study is to detect the capability of the fungi which was isolated from decayed root and stem of oil palm tree. Qualitative test using guaiacol (0.02%) was performed to observe the ligninolytic activity of the fungal isolates. The results of the test indicated that two out of ten fungal isolates were able to produce ligninolytic enzyme. Successful of this study could be used as baseline information of potential fungi which are able to degrade lignin waste in environment.

Keywords
lignin, lignin waste, ligninolytic activity, white rot fungi

Topic
Biology

Link: https://ifory.id/abstract/LDCVhF7RNKtz

Corresponding Author
Rini Puspitaningrum

Institutions
1Dept. of Biology, Universitas Negeri Jakarta. Jalan Rawamangun Muka 13220. Jakarta Indonesia
2 Dept of Physics. Universitas Negeri Jakarta. Jalan Rawamangun Muka 13220. Jakarta Indonesia

Abstract
Myoglobin is an intracellular protein which has a vital role in maintaining oxygen hemostasis within living tissue. This protein has the ability to bind and send oxygen to mitochondrial membrane to enable transduction of energy. The liver is the biggest organ in the bodyand has complex functions. Based on the complex functions, liver needs quite a big amount of oxygen, so the metabolism process can be performed well. This study aims to detect mRNA expression in the liver of rats (Rattus novergicus) in normoxia. The study was conducted at the Biochemistry and Molecular Biology Laboratory of the Biology Major of the Faculty of Mathematics and Natural Sciences, UNJ. This study utilized quasi-experiment method. The study results show that myoglobin mRNA is expressed in the liver of rats (Rattus novergicus) in normoxia on 114 pb. This result can create a new paradigm towards myoglobin gene that this gene might be a constitutive gene. This information can be the basis that living tissues have strategies for mechanism of adaptation towards low oxygen environment by increasing the expression of myoglobin in the tissue.

Keywords
myoglobin mRNA, liver, normoxia, Rattus novergicus

Topic
Biology

Link: https://ifory.id/abstract/nEt379AjrcWb

Corresponding Author
Rini Puspitaningrum

Institutions
1Dept. of Biology, Universitas Negeri Jakarta. Jalan Rawamangun Muka 13220. Jakarta Indonesia
2 Dept of Physics. Universitas Negeri Jakarta. Jalan Rawamangun Muka 13220. Jakarta Indonesia

Abstract
Myoglobin is a hemoprotein with the important roleof being the binding and storage agent of oxygen in tissues. That is why it is important to study the existence of myoglobin in hypoxia tolerant animals, such as the green sea turtle (Chelonia mydas). This study aims to detect myoglobin protein in green sea turtle (Chelonia mydas) organs which consume highly concentrated O2 using spectrophotometry and immunodotblottechniques. In this study, the myoglobin protein of the heart, brain, and liver was analyzed using spectrophotometry at ƛ503nmand immunodot blot techniques with the antibody – anti myoglobin of the green sea turtle (Chelonia mydas). The results obtained is that the myoglobin protein is detected in all organs. The lungs are the organ with the lowest concentration of myoglobin protein from all the test organs. Based on the study results, it can be concluded that genetically, the green sea turtle (Chelonia mydas) would evolve as a tolerant animal toward hypoxia.

Keywords
myoglobin, hypoxia tolerant, green sea turtle (Chelonia mydas), organs which consume highly concentrated O2

Topic
Biology

Link: https://ifory.id/abstract/bcuvyg9aMwdC

Corresponding Author
Muktiningsih Nurjayadi

Institutions
(a) Department of Chemistry, Mathematics and Science Faculty, Universitas Negeri Jakarta, Indonesia
(b) Pusat Laboratorium Forensik Badan Reserse Kriminal Kepolisian Republik Indonesia, Indonesia
(c) Balai Besar Uji Standar Karantina Pertanian, Jakarta, Indonesia

Abstract
Salmonella and Escherichia coli are the bacteria the most common cause of food-borne illness. The aim of the study was to detection S. typhimurium and E. coli by Real Time PCR from milk samples. Gene targeted of S. typhimurium was pef and the E. coli gene targeted was fimC. Confirmation test of all primers in contaminated milk with S. typhimurium and E. coli gave different cycle threshold (Ct) value in range 12-13. The detection limit for S. typhimurium with primer pef was in 7,92 pg/&

Keywords
Salmonella typhimurium, Escherichia coli, Milk Sample, Real Time PCR

Topic
Biology

Link: https://ifory.id/abstract/buMe4cWnKxAq

Corresponding Author
Dewa Ayu Putri Sri Masyeni

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Sleep is one of the primary needs of the basic requirement for human survival. Sleep disorders can cause some effect in humans. It is estimated that 60-80% of workers with shift work system have impaired sleep quality. This results in a decrease in work productivity and an increase in the occurence of accidents. This study aims to determine the determinants of sleep quality disorders nurses in Tabanan General Hospital. This study used cross sectional analytical observational method by conducting questionnaire based interview. The study population was nurses in Tabanan General Hospital with sampling using consecutive sampling technique with samples of 94 people. The results of this study found that factors that have a statistically significant relationship with the quality of sleep is married / have a marital status (PR = 5,53, IK 95%: 1,50-20,39, p <0,05), nurses with tollders (PR = 3,88, IK 95%: 1,28-11,71, p < 0,05) and work system shift (PR = 19,46, IK 95%: 2,48-152,69, p < 0,05). While the factors that have not statistically significant relationship were sleeping environment (PR = 2,06, IK 95%: 0,72-5,91, p=0,17) and coffee consumption in high quantities (PR = 1,41, IK 95% : 0,53-3,73, p=0,48). Based on the result of research, it is found that marital status, toddler ownership and work system are the determinants of nursing sleep quality disorder in Tabanan General Hospital.

Keywords
sleep quality disorder, determinants, nurses

Topic
Biology

Link: https://ifory.id/abstract/hA2zdgvMkbDT

Corresponding Author
Puri Wijayanti

Institutions
Program Studi Teknik Perminyakan, FTKE, Universitas Trisakti, Jakarta Barat 11440, Indonesia

Abstract
In order to improve and increase oil recovery by EOR CO2 injection, CO2 MMP is an important key parameter whereas the CO2 injection must be conducted at or above MMP. The aim of this study is to determined CO2 MMP by using one-dimensional CMG simulation model and proposed the CO2MMP correlations. on L reservoir. To be able to make an accurate simulation model and to choose the best correlation , it is necessary to validation by comparing the obtained CO2 MMP with experiments in the laboratory on 8 type oil from various field. The result showed that Zhang-s correlation is the best correlation which have -6.9% average percentage of errors while using the CMG simulation model shows the average percentage errors approximately -6.5 %. Using Zhang-s correlation we calculated that CO2 MMP on L reservoir about 3388 psia and from CMG simulation we have obtained CO2 MMP equal as 3428 psia.

Keywords
Correlation, Simulation, Minimum Miscible Pressure (MMP), Enhanced Oil Recovery (EOR)

Topic
Material Engineering

Link: https://ifory.id/abstract/GpUVzK8YwFWE

Corresponding Author
Kartika Fajarwati Hartono

Institutions
(a) Petroleum Engineering Department, Faculty of Earth Technology and Energy, Trisakti University
Jalan Kyai Tapa No. 1, Grogol, Jakarta Barat, 11440, Indonesia
*kartika[at]trisakti.ac.id
(b) Magister of Petroleum Engineering Department,Faculty of Earth Technology and Energy, Trisakti University
Jalan Kyai Tapa No. 1, Grogol, Jakarta Barat, 11440, Indonesia

Abstract
CO2 Injection is one of Enhanced Oil Recovery methods that developed to contribute to decrease global warming issues and to improve oil recovery. The aim of this research is to determine the influence of increasing CO2 volume injection on reservoir characteristic fluid. This research was conducted by laboratory experiment. Samples used to analyse were come from Beta field in Tuban Formation. This research was conducted into three steps, there were determination of Minimum Miscible Pressure of CO2, determination of PVT fluid composition, and determination of CO2 injection to fluid characteristic that include viscosity and swelling oil. From the experimental, yield the minimum miscible pressure of CO2 injection for Beta field is 2800 Psig. By increasing 10% volume CO2 injection, oil recovery was increased due to increase CO2 solubility. The swelling effect due to dissolved CO2 also led to changes in viscosity for Beta field is 0.588 to 0.541 cp. In addition, percentage of CO2 composition increase 30% from the original since CO2 injection due to solubility CO2 into hydrocarbon fluid. This research can be concluded that by increasing of volume CO2 injection into miscible displacement can affect in changes of fluid characteristic reservoir and improve oil recovery.

Keywords
CO2 Injection; Minimum Miscible Pressure; Enhanced Oil Recovery

Topic
Chemical Engineering

Link: https://ifory.id/abstract/VthL3CQBEMRY

Corresponding Author
Agus Sanjaya

Institutions
Department of Industrial Engineering, Universitas Prima Indonesia, Jl. Sekip Simp. Sikambing, Medan, Indonesia

Abstract
Strategic distribution locations and optimal distribution routes are important concerns of a company to minimize distribution costs. The shorter the distribution route, the lower the cost of distribution. Animal feed companies have difficulty in reducing distribution costs. Therefore, research is conducted to determine the exact location of the distribution center so that the distribution route is optimal. The purpose of this research is to determine the optimal distribution center location to reduce distribution costs. In determining the proposed distribution center location, Gravity Location Model is used. The research results are the new coordinates as the proposed distribution center location, namely (98.888504; 3.419406) and the total distribution cost of initial distribution center location is Rp 7.135.828, while the total distribution cost of proposed distribution center location is Rp.6.965.143. The results obtained show that the total distribution costs can be reduced by 2.39% per day.

Keywords
Route optimization, Saving matrix, VRP, Gravity location model

Topic
Industry Engineering

Link: https://ifory.id/abstract/RYfZ7yV8ptcQ

Corresponding Author
Farid Soleh Nurdin

Institutions
1) Universitas Islam Negeri Sunan Gunung Djati, Jl. A.H. Nasution No.105, Cipadung, Cibiru, Kota Bandung
2) Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi no 229, Bandung
3) Universitas Langlangbuana, Jl. Karapitan no.116, Bandung

Abstract
In this study, we discussed the control of multivariate dispersion statistics for a single sample size. The control chart was developed from a multivariate control chart exponentially weighted mean square (MEWMS) with total variance (TV) as the multivariate dispersion size used. Although the MEWMS control chart has more advantages than MEWMA and MCUSUM control charts, it has limitations because it only applies to p = 3 variables. Therefore, the main focus in this study is to determine the L value as a determinant of the MEWMS control boundary width for the variable p = 4 through the simulation method. Based on historical data on controlling the wing component products of Airbus aircraft through simulations with vector mean parameters and covariance matrices, MEWMS Control Chart is quick in detecting changes in variance, while in detecting the average changes is very slow.

Keywords
Dispersion, Total Variance, Covariance Matrix

Topic
Mathematics

Link: https://ifory.id/abstract/VR37qNYefkAQ

Corresponding Author
Zulfikar Bagus Pambuko

Institutions
a) Center of Research, Development, and Community Services, Universitas Muhammadiyah Magelang, Indonesia
b) Faculty of Islamic Studies, Universitas Muhammadiyah Magelang, Indonesia
c) Faculty of Engineering, Universitas Muhammadiyah Magelang, Indonesia
d) Faculty of Health Sciences, Universitas Muhammadiyah Magelang, Indonesia
e) Faculty of Law Sciences, Universitas Muhammadiyah Magelang, Indonesia
*zulfikar.bp[at]ummgl.ac.id

Abstract
The research grant is carried out with a quality assurance cycle that involves the research group to produce the research outcomes such as publication, books, or other intellectual property. However, there are problems regarding the distribution of honorariums from the rest of the budget so that they are fair according to the contributions of each researcher. Therefore, this study established the algorithm to produce the fairness index of honorarium distribution based on the researchers contribution. The index was built on the input which is a manifestation of research quality assurance cycle and implemented in pseudocode and flowchart. A simulation of three conditions that showed different contributions from each researcher was carried out with accurate results.

Keywords

Topic
Information Engineering

Link: https://ifory.id/abstract/tWybuaYqZe6p