Indonesia Conference Directory

Corresponding Author
Kebri Kein Moudy Pajung

Institutions
Universitas Pendidikan Indonesia
Bandung, Indonesia

Abstract
Expert system To analyze the professional competency standards of vocational teachers for national education quality based on industry standards and professional competence, it is necessary to evaluate each time or based on a certain period. With the existence of a system that will measure teacher competency skills with the fuzzy logic analysis method will describe the ability of the knowledge and skills of the teacher and will provide training recommendations based on the teachers weak points.

Keywords
professional competence, expert systems, high school teachers, fuzzy logic

Topic
Information Engineering

Link: https://ifory.id/abstract/7N3Lp9rJWGT4

Corresponding Author
Frederikus Fios

Institutions
Character Building Development Center, Computer Science Department, School of Computer Science, Bina Nusantara University, Jakarta, Indonesia 11480

Abstract
One form of development activities carried out by humans is the exploitation of natural materials energy. Often the activity of exploiting natural material energy is only oriented to human interests, but ignores aspects of sovereignty (autonomy) of nature and the future of members of the local community of exploitation place. This paper shows field observations and literature reviews on the practice of energy exploitation of natural materials in Eastern Indonesia, which lacks attention to the dimensions of the balance of nature and the interests of local communities. Eastern Indonesia has not prospered because it is still struggling to obtain their sovereignty in the exploitation of natural materials in their own land. Often social conflicts arise due to the exploitation of material energy carried out. The research method uses interpretative analysis and philosophical reflection to get meaning. Research found a theoretical model that is useful for overcoming the problem of exploitation that occurs. Those humans must transform themselves into ecological human beings so that they can bring practical benefits to the good of nature and East Indonesia local people towards the vision of sustainable development.

Keywords
exploitation, energy materials, natural, sovereignty, local communities

Topic
Environmental Engineering

Link: https://ifory.id/abstract/F9Dn6JfUGyhP

Corresponding Author
Syukur Daulay

Institutions
Departemen Teknik Metalurgi dan Material, Fakultas Teknik, Universitas Indonesia
*syukur.daulay71[at]ui.ac.id

Abstract
One of the easy and cheap solar cell is Dye sensitized solar cell (DSSC) that use dye to harvest sun-s energy. It has drawback in low efficiency because of electron recombination occurrence and low transparence of photoanode. Reduced graphene oxide as derivative of graphene was hoped to overcome the problems. This research is aimed to study the effect of nanocomposite Titanium Oxide-reduced Graphene Oxide (TiO2-rGO) as photoanode to the efficiency by varying the percentage of rGO that fabricated by Hummer-s Method. The rGO from Graphite is successfully fabricated that confirmed from FTIR and SEM and TiO2-rGO nanocomposite has been fabricated and characterized using UV-Vis. The nanocomposite has been used as photoanode that affect the efficiency. The result shows the effect of percentage of rGO on the performance. The efficiency of solar cell is measured using solar cell simulator and give result for 0% rGO resulted 1.45 % efficiency and 0.664% that for 1% rGO. The moderate result is 2% of rGO that resulted 0.9 % efficiency. The pattern is not regular but the effects is counted

Keywords
DSSC, Nanocomposite, rGO, efficeincy

Topic
Material Engineering

Link: https://ifory.id/abstract/UWpdzvJc8wFR

Corresponding Author
Cecep Nurul Alam

Institutions
Department of Informatic,
UIN Sunan Gunung Djati Bandung,
Indonesia

Abstract
The Information System Implementation Stage (IS) in higher education institutions is in line with the afordibility, accessibility, and quality of education, specifically guaranteeing management performance and academic functions of the higher education institutions. On the other hand, even though the Implementation of SI brings great benefits to every educational institution, they must first plan it well. Researchers found that since the 2000s, SI in higher education has been trying to plan its implementation well. Its just that, the good implementation design for more than a dozen years of development is still seen not yet realized. Related to that, this study is interesting. In addition to exploring the status of IS implementation and identifying the factors that influence it for decision makers, the results of this study are also expected to be one of the references in the area of IS development and management research, related to aspects of system readiness and success. The researcher developed this research model by adopting the technology readiness model and the IS success model coupled with the expansion of its organizational side, combining and adapting it according to the IS research context. This research use mixed method that involves a sample of parties related to the IS implementation in the institution about a new model about expanding the IS readiness and success model.

Keywords
Readiness; Success; IS Implementation; Mixed Method

Topic
Information Engineering

Link: https://ifory.id/abstract/C2cgr3nkYGdH

Corresponding Author
Dewa Ayu Putri Sri Masyeni

Institutions

Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Ultraviolet rays (UV) have various radiation waves, namely: UVA, UVB, UVC, infrared, and visible light with their respective effects on the skin. UVA radiation can penetrate the window glass and can react to chemicals of topical drugs and oral drugs which can cause a reaction called photoallergy and phototoxic reactions. Continuous radiation from UVA and UVB can cause degeneration of connective tissues in the skin such as sun-aging (photoaging), skin cancer (photocarcinogenesis), and immunosuppression on transplantation. Based on data from the Meteorology, Climatology and Geophysics Center, Buleleng Regency is one of the districts in Bali which has a high level of sun exposure intensity as compared with other districts. The purpose of this study were to determine the factors that influence the use of sunscreen by students of Ganesha University of Education. This study uses analytical observational method with cross sectional design, using interview based on prepared and standardized questionnaire. The technique used for sample selection was systematic random sampling in 5th semester students from 7 faculties with a total of 96 samples. The data were analyzed using chi square test including to assess the p value. The results showed a significant association between knowledge level and sunscreen usage (p = 0,003), and lifestyle (p = 0,033). It is expected that people would be able to increase their usage of sunscreen in their own arUltraviolet rays (UV) have various radiation waves, namely: UVA, UVB, UVC, infrared, and visible light with their respective effects on the skin. UVA radiation can penetrate the window glass and can react to chemicals of topical drugs and oral drugs which can cause a reaction called photoallergy and phototoxic reactions. Continuous radiation from UVA and UVB can cause degeneration of connective tissues in the skin such as sun-aging (photoaging), skin cancer (photocarcinogenesis), and immunosuppression on transplantation. Based on data from the Meteorology, Climatology and Geophysics Center, Buleleng Regency is one of the districts in Bali which has a high level of sun exposure intensity as compared with other districts. The purpose of this study were to determine the factors that influence the use of sunscreen by students of Ganesha University of Education. This study uses analytical observational method with cross sectional design, using interview based on prepared and standardized questionnaire. The technique used for sample selection was systematic random sampling in 5th semester students from 7 faculties with a total of 96 samples. The data were analyzed using chi square test including to assess the p value. The results showed a significant association between knowledge level and sunscreen usage (p = 0,003), and lifestyle (p = 0,033). It is expected that people would be able to increase their usage of sunscreen in their own areas through education regarding the function and danger of sunlight as well as maintaining a healthy lifestyle.

Keywords
sunscreen, skin cancer, premature aging, ultraviolet rays

Topic
Biology

Link: https://ifory.id/abstract/rfGvJP7xenXM

Corresponding Author
Ganjar Jojon Johari

Institutions
Teknik Sipil, Sekolah Tinggi Teknologi Garut
Jl. Mayor Syamsu No. 1 Jayaraga Garut 44151, Indonesia

Abstract
The construction industry is a very promising business area in terms of infrastructure development and financial benefits. Many factors influence the competitiveness of small contractors in the construction industry. This study aims to identify what factors influence competitiveness and identify what are the dominant factors that affect the competitiveness of small contractors in the construction industry in West Java. The author uses descriptive and explanatory research methods which are then processed by statistical methods using validation tests, reliability tests, and factor analysis. The results of this study indicate that all variables are valid and pass the reliability test. Of the 9 factors studied, it has a significant influence on the competitiveness of small contractors in the construction industry in West Java. There is 1 dominant factor that influences the competitiveness of small contractors in the construction industry in West Java, namely project management factors. These indicators are; Location management, Cost management, Quality management, Time management, Contract management, Problem solving expertise, Risk management, Logistics and supply chain management, Effectiveness in coordination with subcontractors, Effectiveness in site safety management, Knowledge of local construction law, Number of major accidents in The last 3 years, and the contract ratio successfully committed.

Keywords
Competitiveness, Small Contractors, Construction Industry, Project Management, Dominant Factors.

Topic
Civil Engineering

Link: https://ifory.id/abstract/928yBVFpcjxd

Corresponding Author
Ganjar Jojon Johari

Institutions
Teknik Sipil, Sekolah Tinggi Teknologi Garut
Jalan Mayor Syamu No. 1 Jayaraga Garut 44151, Indonesia

Abstract
School buildings have an important role in education. The problem that occurs is the low quality in rehabilitation. A quality control system is needed that can guarantee the quality of the building in accordance with the expected results. The purpose of this study was to identify what factors caused low quality in the rehabilitation of school buildings in Garut district. This study uses a quantitative approach with survey methods. The population and sample were 4,134 secondary schools that experienced rehabilitation in 2018 with a sample of 94 schools. The statistical analysis used was confirmatory factor analysis. The results of this study are 13 variables that affect the low quality in the rehabilitation of school buildings in Garut Regency which are incorporated in 2 factors, namely project planning and implementation / project implementation. One dominant factor was obtained, namely the organizing factor for the implementation of activities. The indicators are division of tasks, time, capacity, and manner of implementation, Estimated number of resources needed, Allocation of available resources, Ease of communication between the elements involved, Allocation of responsibilities for project implementation, Coordination of all activities and labor involved.

Keywords
Quality, Rehabilitation, School Building, Project Planning, Project Implementation

Topic
Civil Engineering

Link: https://ifory.id/abstract/wL3zGpCcdMjH

Corresponding Author
Dewa Ayu Putri Sri Masyeni

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Short body height will be a problem if the prevalence of abbreviation is high, which is 30-39% and very high such as ≥40%. In Indonesia the prevalence of short women >18 years in 2013 amounted to 41.6%. Short women tend to have risky pregnancies and give birth to short children as well. Short children have a greater risk of developing degenerative diseases and tend to have lower cognitive abilities that will impact on labor productivity and the economic condition in their adulthood. The purpose of this research is to know the correlation between age of menarche, birth weight and height of parent with the height of student at Faculty of Medicine and Health Science Warmadewa University. The method used was analitic cross sectional, about 66 samples were chosen using systematic random sampling technique and the data will be analyzed by correlation test of contingent coefficient with p <0,05. The results of this study were found to have a significant correlation with height of female students FKIK Unwar is birth weight (p = 0,016, C = 285) and height of parent (father-s height: p = 0,031, C = 0,256; mother-s height: p = 0,045, C = 240). While the age of menarche is not have a significant correlation with height of female students FKIK Unwar (p = 0,084, C = 208). Based on this study, the height of the parent body and the birth weight has a weak positive correlation with height of female students FKIK Unwar, while the age of menarche does not have a significant correlation with height of female students FKIK Unwar

Keywords
height, age of menarche, birth weight and height of parent

Topic
Biology

Link: https://ifory.id/abstract/ERPj8CckAvuw

Corresponding Author
agus santosa

Institutions
Faculty of Medicine and Health Sciences, University of Warmadewa

Abstract
Jumantik are special officials who perform larva monitoring to reduce the occurrence of DHF. In fact, the high number of DHF cases in Puskesmas II South Denpasar represents a problem regarding the performance of Jumantik. The purpose of this studies were to find out the factors that influent the performance of Jumantik in relation with the occurrence of DHF in the work area of Puskesmas II South Denpasar. This study used descriptive analytic design through cross sectional approach with the total samples of 32 Jumantik in the work area of Puskesmas II South Denpasar. Data were collected by using questionnaires. The obtained data were analyzed by chi square test and logistic regression test. Based on bivariate analysis, there were no significant correlations between characteristic (age, gender, education, tenure, and additional work) and Jumantiks attitudes with the occurrence of DHF indicated by p> 0,05. However, there were significant correlations between Jumantiks ability (p = 0,02), Jumantiks motivation (p = 0,014), award given (p = 0,008) and monitoring evaluation (p = 0,001) with dengue occurrence (p <0, 05). The results of multivariate analysis showed that the variables which influenced the occurrence of DF were ability (p = 0,014) and monitoring and evaluation (p = 0,011) and the most influential were the monitoring and evaluation variables with the value of OR 20,40 which means that if there were no monitoring and evaluation to Jumantik then the risk of DHF occurrence were 20.4 times greater than that in the presence of monitoring and evaluation. The results of this studies showed that the most influential factors of DHF occurrence are the ability of Jumantik and monitoring the evaluation of Jumantik. To reduce the case of dengue, need to be optimized ability jumantik and monitoring evaluation consistently and continuously.

Keywords
Jumantik performance; dengue infection; prevention

Topic
Biology

Link: https://ifory.id/abstract/DqZtE4nBUxPy

Corresponding Author
Asri Lestarini

Institutions
a) Faculty of Medicine and Health Sciences, Warmadewa University
Jalan Terompong no 24, Denpasar, Bali 80235
*asrilestarini[at]gmail.com

Abstract
The main predisposing factor of infant mortality is Low Birth Weight (LBW). LBW can have long-term effects on child developments, therefore the high incidence of low birth weight can affect the quality of human resources. The purpose of this study was to determine the predisposing factors of the occurrence of LBW in Payangan sub-district, Bali. This research was analytical research with a case-control design to assess predisposing factors of the occurrence of LBW by assessing medical records of pregnant women. The sample of this study was 92 mothers with a history of childbirth. Chi-square method was done to test the significance of each variable on the independent variable. Results obtained from five predisposing factors, those which had correlations to the incidence of LBW in Payangan Health Center were twin births, nutritional status, and anemia with a P value of <0.05. The conclusion made from the results of this study was the variables that have significant effect were variables of twin births, nutritional status, and anemia, while parity did not have a significant effect. A Suggestion made that it can provide benefits to health workers at health centers and pregnant women about LBW risk factors.

Keywords
low birth weight, nutrition

Topic
Biology

Link: https://ifory.id/abstract/9CW6DudxXRL2

Corresponding Author
Hamdani Umar

Institutions
a) Mechanical Engineering Department, Syiah Kuala University, Banda Aceh, 23111, Indonesia.
hamdani[at]unsyiah.ac.id
b) Planning Section, Samudra University, Kota Langsa, Aceh, 24416, Indonesia.
c) Mechanical Engineering Department, Samudra University, Kota Langsa, Aceh, 24416 Indonesia.

Abstract
All renewable energy sources are land intensive. A solar photovoltaic (PV) system requires a lot of spaces, and roofs of buildings are perfect places for installation of campus-wide PV system since most universities cannot a&

Keywords
Feasibility study, Photovoltaic, Campus

Topic
Mechanical Engineering

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

Corresponding Author
Mochamad Romdhon

Institutions
Universitas Garut
Jl. Samarang No. 52A Garut Indonesia
mromdhon[at]uniga.ac.id

Abstract
Financial technology is very important to improve banking performance in carrying out its business activities. The purpose of this research is to determine the role of financial technology in improving the financial performance of a banking company in Indonesia. The method used in this research is a survey. Based on the results of the study, it is known that the role of financial technology related to the payment, transfer, clearing and settlement systems in the first quarter of 2015 to the fourth quarter of 2017 can improve banking financial performance with the loan to deposit ratio level in healthy criteria. So as to continue to improve financial performance, banks are expected to make continuous improvements for the technology used and always innovate the banking product to satisfy the public as customers.

Keywords
financial technology, financial performance, banking.

Topic
Management Science

Link: https://ifory.id/abstract/FMjYrZ6qztDe

Corresponding Author
Mia Rismalia

Institutions
a) Faculty of Engineering and Technology, Sampoerna University, Jakarta 12780, Indonesia
*farid.triawan[at]sampoernauniversity.ac.id
b) Department of Mechanical Engineering, Politeknik Negeri Jakarta, Depok, Indonesia

Abstract
This paper presents the finite element analysis (FEA) of Miura origami structure under the uniaxial compressive loading condition. The FEA model is developed under elastic-perfectly plastic material. Investigation on the compressive deformation characteristic and elastic modulus with three varied parameters, i.e. angle, thickness, and density of the Miura origami structure is conducted. The Abaqus software is used to conduct the simulation of compression test. The simulation result is then compared with and examined to the experimental data. The results of the analysis can be used for predicting the mechanical behavior of origami-shaped structure such as for designing an impact energy absorber and vibration damper.

Keywords
finite element analysis, Miura origami, uniaxial loading, deformation characteristic, material properties, elastic-perfectly plastic material.

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/rWzE4FbBa2VX

Corresponding Author
Lia Kamelia

Institutions
Department of Electrical Engineering
UIN Sunan Gunung Djati Bandung

Abstract
The number of residential fires in urban areas is increasing every year. The use of automatic fire detection technology can prevent greater fire disaster losses. The fire detection system works by detecting increasing degrees of heat, ultraviolet radiation by flames, and gas leaks. The system will start automation if the LM35 Temperature sensor, MQ2 Gas sensor, and Light Dependent Resistor (LDR) detect the occurrence of fire according to the initial settings on Arduino Uno. After Arduino Uno processes input data from the sensor, there will be a notification notification marked with the Buzzer and a text will appear on the Liquid Crystal Display (LCD) that describes the condition of the sensor reading. Arduino Uno configures data via the GSM SIM900A Module. The last process is sending short messages (SMS) from the GSM SIM900A Module to the receiver to notify the initial warning of a fire. the delay time in testing the farthest distance (100 cm) is as follows: LM35 140 second Temperature Sensor, 130 second MQ2 Gas Sensor and LDR 145 seconds

Keywords
Fire detection; LDR ;LM 35;MQ2;SMS

Topic
Electrical Engineering

Link: https://ifory.id/abstract/WGAE9B4kyFpU

Corresponding Author
Riser Fahdiran

Institutions
(1) Biology Department, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, Western Java, Indonesia, 16424
(2) Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jakarta, Indonesia, 13220

Abstract
Research of fish community structure in Panjang Island, Banten Bay has been conducted from October to December 2014 while spring tide. The aim of the research was knowing the fish biodiversity and fish community structure. The fishing method was used push net manually active. The location were at Station 1 (West) with sandy-mud and gravelled substrate and Station 2 (North) with mud-reef substrate. In total, 1770 species were captured (14 families, 16 genera, and 21 species), the most large number were at Station 1 and in November (1.213 and 749 individus). Both stations had a low species diversity index (H-) value (0,705 and 0,807). It supported by a low eveness index or distribution of individuals among species (E) value. Its high dominance index (D) value was due to the predominance of Ambassis gymnocephalus-Chandidae (908), Ambassis buruensis-Chandidae (297), Oryzias javanicus-Adrianichthyidae (265), Chelon sp.-Mugilidae (123), and Gerres sp.-Gerreidae (22) in large numbers.

Keywords
Chandidae; Mangrove; Panjang Island; Push Net; Fish Community

Topic
Biology

Link: https://ifory.id/abstract/R7BkqNYTxLuw

Corresponding Author
Syarip SYARIP

Institutions
Centre for Science & Accelerator Technology, National Nuclear Energy Agency, Yogyakarta 55281, Indonesia.

Abstract
The fission-product gas pressure and radioactivity analysis of a sub-critical assembly for Mo-99 production (SAMOP) experimental facility have been done. The SAMOP reactor core is an annular tube surrounded by a ring of fuel tubes, fueled with low enriched uranyl nitrate UO2(NO3)2 of 300 g U/L. The reactor is designed to be operated at 100 to 120 hours periodic operation per batch. The calculation method is done by using ORIGEN2 computer code, for the condition of the maximum fuel temperature 54 C, 120 hours reactor operating time, and neutron flux is varied from 10^10 to 10^12 n/cm^2s. The result shows that the inventory of the gaseous fission products consisted of xenon, radium, helium, and tritium isotopes with the total activity of 1.3576x10^13 Bq (366.9158 Ci) and total gas volume 0.0969 cm^3. Total pressure due to the fission product gases is 5.78 kPa, this is very small, therefore the pressure monitoring in the SAMOP reactor core is not necessary. The isotopes of xenon and krypton are the major contributors to the total gas pressure. The release probability of these volatile fission products is very small, whiles SAMOP reactor does not have open nuclear material, therefore no special ventilation system is required.

Keywords
SAMOP, reactor, subcritical, fission products, radioactivity, gas pressure.

Topic
Physics

Link: https://ifory.id/abstract/P8h9vjCyBXUN

Corresponding Author
Sri Rahayu

Institutions
Universitas Negeri Jakarta

Abstract
. Flavonoids can be found in every organ of plants and has a role as natural antioxidant. The aim of this research was to investigate the influence of maceration and drying time to the level and the type of flavonoids from some leaves of plants located in Taman Wisata Alam Pangandaran. This research used CRD (Completely Randomized Design) with 2 factorial design. The first factor was soaking time of the plant extract in ethanol 96% for 24 hours and 48 hours, the second was drying time for 14 and 21 days. Sample used were Bungur (Largerstoremia speciosa L.), Mahoni (Swietenia macrophylla), Nyamplung (Calophyllum inophyllum L.), dan Vitex (Vitex pubescens Vahl.) leaves. Qualitative parameter was determined from the change of color of the solution used the reagent, as well quantitatively by spectrophotometer of 415nm. Flavonoid type was then analyzed using spectrophotometer at 250-560nm. Quantitative analysist of 2 ways ANOVA showed that all groups were shown significance influence of maceration and drying with optimum flavonoid level varying from one to another. Flavonid type was also ranging from antocyanidin and antocyanin.

Keywords
Drying, Maceration, Flavonoids, Antioxidant, Plant

Topic
Biology

Link: https://ifory.id/abstract/gDXjM4rKPp2Z

Corresponding Author
Irika Widiasanti

Institutions
(a) Faculty of Engineering, Universitas Negeri Jakarta
Jalan Rawamangun Muka, Jakarta 13220, Indonesia
*irika[at]unj.ac.id

Abstract
This paper presents the evaluation of the precast reinforced concrete beam extension, in order to solve the problem of constructing a long and big concrete beam. We discuss the flexural strength analysis for a joint menchanism in the middle of the beam element in order to ease the installation. In this research we conduct expertiment on a total of three test materials. The first test material is a full beam with the size of 3000 mm x 250 mmx 350 mm. The second one is the beam with the cement hollow by the size of 1300 mm x 250 mm x 350 mm. The third one is a beam with the steel sheet extension by the size of 1400 mm x 250 mm x 350 mm. The test result shows that the maximum flexural strength which can be supported by the beam with the concrete hollow tube is lower compared to the whole beam or the beam with a steel sheet extension

Keywords
concrete beam, knock down, precast, extension, concrete hollow tube, flexural strength

Topic
Civil Engineering

Link: https://ifory.id/abstract/EfKvAp3NnyUk

Corresponding Author
Hari Karyadi Oetomo

Institutions
Universitas Trisakti

Abstract
A sweet gas exploration well, penetrating 3286 feet thickness of Granite Basement with 70 feet thickness of extensive fracture was tested. Initial step was to study all geologycal and petrophysical aspects of reservoir and well . These data were used to obtain the sense of reservoir shape model and its fracture flow behavior. Interpreting the log gives the presents of partial fracture and open fracture, which are shown in the early time region as a fracture dominated flow and very small wellbore storage effect. The bilinear flow before middle time region and followed by two porosity fracture model at middle time region are shown afterward. Constant pressure circle boundary is shown in the late time period. In summarized, the well flow model is in infinite acting conductivity with two porosity pseudo steady state reservoir model and constant pressure circle boundary. The permeability is 1.45 mD, with -0.52 skin and 1962 Psia reservoir pressure; meanwhile the fracture coefficient is 50 mD-ft, storativity is 0.51, and interporosity flow coefficient is 4.38x10-6 mD-ft. All well and reservoir data pertaining well test is very important for getting a reliable well test interpretation result; to get better understanding reservoir flow behavior.

Keywords
Pressure Build Up Test, Pressure Derivative, Granite Basement, Sweet Gas Well,

Topic
Industry Engineering

Link: https://ifory.id/abstract/pC9kvAMtGB8g

Corresponding Author
samsol samsol

Institutions
Petroleum Engineering Department Universitas Trisakti

Abstract
Well test pressure and deliverability analysis are carried out to determine permeability (k), skin formation damage factor, initial pressure (Pi), (∆P skin), investigation radius (ri), boundary of the reservoir. The results of this work are used to calculate the initial gas reserves by wells and predict production capacity in the wells studied (AOFP). Furthermore, an optimal production plan will be produced to produce the most economic value. The result of this work is the initial pressure value (Pi) which is equal to 862 psi. The skin values ​​of the pressure derivative and Horner Plot methods are -0.214 and -0.232 respectively, the permeability value are 148 and 135 mD, the value of the investigation radius is 2110 ft. The resulting AOFP is 8214 Mscf/D. The calculation of the initial gas reserves by well uses the volumetric method which is equal to 458 MMscf. These results are then carried out forecasting production performance aims to determine the most optimal production planning. This production plan, the scenario used is scenario 1 with a gas rate of 2 MMscf and scenario 2 uses a compression 50 psia with a gas injection rate of 1 MMScf. Furthermore, the best scenario of this research is the optimum production by using 50 psia injection rate of 1 MMScf

Keywords
Well test, Pressure build up test, Gas well production scenario

Topic
Industry Engineering

Link: https://ifory.id/abstract/T7ea8PdKGbLt

Corresponding Author
Muhammad Fiqri Affan

Institutions
Teknik Elektro, FPTK, Universitas Pendidikan Indonesia

Abstract
Wind Energy is an environmentally friendly and efficient energy source that is popular now. Wind Energy can be converted into electrical energy to meet the electricity needs of the community. In this paper purpose to determine potential of wind speed in the city of Bandung, and build a PLTB (Wind Power Plant) to meet the electricity needs of the community. Analyze by using Eksponential Smoothing method and Artificial Neural Network. The results obtained are average annual wind speed starting from 2019-2023 with the calculation of ANN and exponential smoothing, after knowing the results, compare the two method which method is more accurate. Benefit of this calculation is to determine whether the city of Bandung is feasible to establish a PLTB or not, judging by the results of its wind speed forecast.

Keywords
Wind Energy; Artificial Neural Network; Exponential Smoothing

Topic
Electrical Engineering

Link: https://ifory.id/abstract/enyKGfpgLNd9

Corresponding Author
Nurhabibah Nurhabibah

Institutions
Program Studi Farmasi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Garut, Jl. Raya Samarang No.52A, Garut, Indonesia
*nurhabibah[at]uniga.ac.id

Abstract
Fast Dissolving Film (FDF) have ability to releasing active pharmaceutical rapidly in oral mucosal with increasing bioavaibility of active pharmaceutical due to first passing hepatic metabolism. The aim of the research was formulated and evaluated FDF salbutamol sulfat with HPMC E15 polymer use solvent casting method. FDF salbutamol sulfat with variation of concentration HPMC E15 polymer was resulted film who flexible and semi transparent. The results of the evaluation of thickness, weight variation, folding endurance, surface pH, moisture loss, moisture uptake and disintegration time of film for all formulation was comply with a requested, except weight variation of F4, disintegration time of F1, F2, F3 and F4.

Keywords
Fast Disintegrating Film, Formulation, Evaluation, Salbutamol Sulphate, HPMC E15.

Topic
Pharmacology

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

Corresponding Author
Nurul Auliasari

Institutions
a) Program Studi Farmasi, Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA), Universitas Garut, Jl. Raya Samarang No. 52A, Garut 44151, Indonesia
*nurul[at]uniga.ac.id
b) Lembaga Farmasi Direktorat Kesehatan Angkatan Darat, Jl. Gudang Utara No. 26, Merdeka, Sumur Bandung, Kota Bandung 40113, Jawa Barat, Indonesia

Abstract
Sago is a staple food for most of the world population, its use is not only used in food products but also used in pharmaceutical products. Sago starch can be used as a binding material on tablets. This study aimed to develop formulation and evaluation of ibuprofen tablets using sago (Metroxylon sagu Rottb.) starch as a binder in making ibuprofen tablet preparations. Tablets made using wet granulation method with sago starch as a binder at various concentration. The evaluation includes of the granules and tablets. The result from dissolution test of ibuprofen tablets showed that the highest dissolved percentage was obtained in formula 1 compared to formulas 2 and 3. The results showed that sago starch could be used as binders on tablets and fulfilled the requirements on the evaluation of the granules and tablets.

Keywords
Ibuprofen; Metroxylon sagu Rottb; Binder; Tablets

Topic
Pharmacology

Link: https://ifory.id/abstract/uHJtqT6Rh4f2

Corresponding Author
Retty Handayani

Institutions
Faculty of Mathematics and Natural Sciences, University of Garut
Jalan Jati No. 42B, Garut 44151, Indonesia
rettyhandayani[at]gmail.com

Abstract
Java preanger arabica (Coffea arabica L.) coffee is a specialty coffee from Priangan, one of which is efficacious as a natural fragrance. The essential oil content in java preanger arabica (Coffea arabica L.) coffee beans includes Abhexon, Furaneol, Sotolon, Pentandion. The purpose of this study is to find out what percentage of the concentration of coffee extract gives a good aroma, how to formulate a safe and stable body splash preparation. The research methodology began with material collection, determination, making coffee roasting, soxletation with ether solvents, dosage formulations made with concentrations of one percent, three percent, six percent and evaluations including organoleptic testing, pH, viscosity, quality testing of body splash preparations (test spredibility, endurance test, spot test, adhesion test), irritation test, preference test, sharpness test and preference test. The evaluation results showed that the formula of body splash preparation with the concentration of three percent java preanger arabica (Coffea arabica L.) coffee oil was a safe, stable and preferred aroma because it was not too stinging and did not cause stains on clothes

Keywords
Java preanger arabica coffee bean oil; body splash; natural fragrance

Topic
Pharmacology

Link: https://ifory.id/abstract/w46eytZkMn3Y

Corresponding Author
Neneng Windayani

Institutions
Department of Chemistry Education, UIN Sunan Gunung Djati Bandung
Jl. A. H. Nasution No. 105, Bandung 40614, Indonesia

a)E-mail: nenengwinda.ftk[at]uinsgd.ac.id

Abstract
This study aims to make facial wash gel made from Aloe vera L. as a natural surfactant. The experimental method used included the stages of analysis of Aloe vera extract samples, addition of carbomer 960 with a percentage of 0.5%, 0.7% and 2%, selection of essential oils according to facial skin requirements, testing of secondary metabolites contained in Aloe vera extract. Furthermore, making aloe gel as a facial wash by utilizing the secondary metabolites contained in Aloe vera that have characteristics in accordance with the Indonesian national standard (SNI). The results showed that Aloe vera extract used positively contained flavonoid, triterpenoid, saponin, and polyphenol compounds. It has been successfully made the best facial wash gel with formulation obtained in addition of carbomer 960 with a percentage of 0.7%. The organoleptic results of Aloe vera gel as facial wash include having an aroma in accordance with the added essence, soft texture, gel form, cloudy white color, feeling cool or cold when applied to facial skin, without foam and having a pH of 5.

Keywords
Aloe vera gel, facial cleanser, natural surfactant, secondary metabolite

Topic
Chemistry

Link: https://ifory.id/abstract/q8j3Nm2LRxa4

Corresponding Author
Sri Mulyati

Institutions
(a) Graduate School of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
(b) Doctoral School of Engineering Science, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
(c) Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia
*sri.mulyati[at]unsyiah.ac.id

Abstract
This works focuses on the fouling resistance evaluation of polydopamine-blended poly (ether sulfone) (PES) ultrafiltration membrane for water treatment application. The supporting PES membrane was prepared via common phase inversion method. The dopamine was introduced to the membrane by blending technique and the modification occurred by in-situ polymerization of dopamine into polydopamine which triggered by peroxide. The antifouling performances were studied in terms of flux recovery, reversible fouling, irreversible fouling, and total fouling. The relevant characteristics of the membranes such as surface porosity, chemical composition, water permeation, and solute rejection were also provided to support the analysis of antifouling performances. The results revealed that the presence of polydopamine in the membrane system significantly enhanced the fouling resistance of the polydopamine-blended PES membrane. The hydrophilic component in polydopamine reduced the interaction of membrane with foulant thus lowered the total fouling of only 18.92% with 13.50% reversible fouling and 5.42% irreversible fouling for modified membrane. In addition, the polydopamine-modified membrane successfully recovered up to 95% of the flux after backwashing, much higher than that of original PES which was only 67%.

Keywords
Antifouling; Ultrafiltration; Polydopamine; In-situ polymerization

Topic
Chemical Engineering

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

Corresponding Author
HINDARTO HINDARTO

Institutions

Abstract
Electroensephalograph (EEG) is a device that can capture electrical activity in the brain and inform the minds condition such as emotional, fatigue, alertness, health and concentration level. Modeling the EEG signal before classification needs to be done, several studies have been carried out using Wavelet, Power Spectral, or Autoregressive transformations as feature extraction. This study explains the application of K-Nearest Neighbor as a classification and Fourier transform by taking the value of Power Spectralfor feature extraction from the wave signal Electro Encephalo Graph (EEG). This study aims to identify EEG signals used for cursor movements. The data used are EEG data originating from the 2003 BCI competition (BCI 2003 Competition). The data contains data class 0 (for movement of the cursor up) and class 1 (for movement of the cursor down). Decision making is done in two stages. In the first stage, the Power Spectral value for each EEG signal is used to extract the feature. The feature is input to K-Nearest Neighbor. In the second stage of the identification process into two classes (class 0 and class 1) EEG signal data files, there are 260 EEG signal file training data and 293 from EEG signal file testing data, so that the total becomes 553 EEG signal data files. The results obtained for the classification of EEG signals are 85.6% of the signal data tested

Keywords
EEG, BCI, Power Spectral, K-Nearest Neighbor

Topic
Computer Science

Link: https://ifory.id/abstract/GPdfa9qby3MB

Corresponding Author
Afrizal Afrizal

Institutions
Departmen Chemistry of Universitas Negeri Jakarta

Abstract
Research and development of liquid crystal of cholesteryl acrylate growing up now. The aim of this research is to synthesis composites and polymerizations of cholesteryl acrylate with dopan of indium tin oxide (ITO). The blending process of cholesterol acrylate and ITO was performed using casting solution technique at 75&

Keywords
Cholesteryl acrylate, composite, photopolymerization, UV curing, characteristic and conductivity

Topic
Material Science

Link: https://ifory.id/abstract/Cbet8vBuKngP

Corresponding Author
faiz muqorrir kaffah

Institutions
(1) Department of Informatics, UIN Sunan Gunung Djati Bandung, Indonesia
(2) School of ICT Asian E-University Kuala Lumpur, Malaysia
(3) Department of Information System Sangga Buana YPKP University Bandung, Indonesia

Abstract
The governance of information security in the Indonesian Government has not been completely improved. Many related variables components are not measured. This study aims to observe an evaluation for application of information security index framework in Indonesian government institutions as the implementation of electronic government. The analysis is carried out by adopting an information security index framework produced in the rank of e-government. The study uses a triangulation approach within a mixed method. This study results in a novel adoption model of information security index framework equipped by two new variables. Therefore, a proper policy of the Indonesian government is required for its implementation.

Keywords
Security information, e-goverment, framework

Topic
Computer Science

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

Corresponding Author
Anggi Restu Fauzi

Institutions
Universitas Pendidikan Indonesia

Abstract
Economic dispatch is one of the important problems in the operation of electric power system. The purpose of this paper is to determine optimal generation scheduling with minimum fuel costs. The proposed fuzzified particle swarm optimization algorithm is a combination of fuzzy logic incorporated in the particle swarm optimization algorithm. In this paper, the performance of the fuzzified particle swarm optimization algorithm is compared with the conventional method, the lagrange multiplier method. 6 thermal power plants are used as input data for simulation. The results show that the proposed method can provide a more accurate solution and has the potential to be applied to other electric power system optimization problems.

Keywords
economic dispatch, lagrange multiplier method, fuzzy logic, particle swarm optimization

Topic
Electrical Engineering

Link: https://ifory.id/abstract/QwcbqGuX4yag