Indonesia Conference Directory

Corresponding Author
Meita Rumbayan

Institutions
Faculty of Engineering, Sam Ratulangi University

Abstract
The application of solar home system in the remote areas is needed to be monitored by real time. The Internet of Things (IoT) system is capable to perform data management for the purpose of monitoring and evaluation of solar home system performance in the specific location. The data are collected and transmitted to a system monitoring through the internet then it can be stored in cloud for further analysis. The purpose of this paper is to develop the concept of IOT architecture that used of measuring parameter of photovoltaic panel for the selected remote area.

Keywords
Solar Home System Monitoring, Internet of Things, Photovoltaic panel, Remote Area, Solar Energy

Topic
Electrical Engineering

Link: https://ifory.id/abstract/qpHVNUuvhAg6

Corresponding Author
Dwi Ely Kurniawan

Institutions
Politeknik Negeri Batam

Abstract
Information system security in the network becomes the most important thing to note, especially on a web application system, both organization and personal. Some ways that are used to provide a guarantee of data security is to verify the login to the web application system using One Time Password (OTP). However OTP sometimes still has a gap though OTP data only valid for one login session. This research develops information system security with OTP data encrypted with blowfish algorithm. The blowfish algorithm is divided into two main sub-algorithms namely the key expansion part and the data encryption-decryption section. OTP system design results developed blowfish algorithm data received and sent can be kept confidential.

Keywords
Academic Information System; OTP; Blowfish Algorithms; Security System

Topic
Information Engineering

Link: https://ifory.id/abstract/B6EjqQA82v7a

Corresponding Author
Trisina Simanjuntak

Institutions
Departemen Pendidikan Teknik Elektro, Fakultas Pendidikan Teknologi dan Kejuruan, Universitas Pendidikan Indonesia

Abstract
Economic Dispatch (ED) is an important problem in power generation and transmission systems. The main goal of this study is to get generation scheduling with the lowest operating costs as possible to satisfy the load demand. PSO mimics the behavior of individual in a population, which in this case, is the characteristic of six thermal power plants of interconnection system Java-Bali 500 kV. Then, Pareto Archive will provide the solutions for multiarea system. The results obtained from combining the two methods is better than the conventional methods. The more efficient the optimization results, the smaller operating costs will be incurred.

Keywords
economic dispatch; PSO; Pareto Archive; thermal power plant; operating costs

Topic
Electrical Engineering

Link: https://ifory.id/abstract/E8KXHy3WcvuP

Corresponding Author
Agus Dudung

Institutions
(a) Mechanical Engineering Departement, Faculty Of Engineering, Universitas Negeri Jakarta
(b) Information Technology Departement, Faculty Of Engineering, Universitas Negeri Jakarta
(c) Electrical Engineering Departement, Faculty Of Engineering, Universitas Negeri Jakarta

Abstract
The research aimed to examine the relationship between numerical reasoning abilities and academic achievement in CNC (Computer Numerical Control) course and the contribution of numerical reasoning of CNC course. This study employed a survey method with correlational causal relationships. The stratified random sampling proportional technique is employed with 30 engineering students . The results of the study show the significant relationship between numerical reasoning and academic achievement of CNC course with r count = 0.76. The two coefficients are terminated by independent variables (predictors of X) for changes in the dependent variable (Y criterion) of R square = 57.8%. The results show that there is a positive relationship between the two variables. Therefore the learning experiences should provide the opportunities for students to develop their numerical reasoning.

Keywords
CNC (Computer Numerical Control) Practice, Numerical Reasoning, Engineering Students

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/7UWky4Jd3RjN

Corresponding Author
Aodah Diamah

Institutions
UNJ

Abstract
In multi-attribute automated negotiation, maximizing negotiation outcome can be regarded as a multi-objective optimization problem. The objectives are to maximize each negotiator gain expressed as their preferences. A negotiation outcome is evaluated based on the outcome distance to the Pareto front of all the possible negotiation solutions. Pareto front is the collection of solutions that can no longer be improved in one objective without compromising another objective. Therefore Pareto front plays an important role in examining negotiation outcomes. In cases where possible negotiation solutions are too large, it is computationally inefficient to find this front exhaustively by comparing all solutions. To this end, evolutionary algorithm has been used to approximate Pareto front. In this paper we aimed to obtain Pareto front using an evolutionary algorithm called non-dominated sorting genetic algorithm II (NSGA II). Results using two different negotiation settings show that Pareto front obtained with NSGA II are very close to the true Pareto front.

Keywords
Pareto front, genetic algorithm, multi-attribute negotiation

Topic
Computer Science

Link: https://ifory.id/abstract/vmWetUVu43RQ

Corresponding Author
ni putu diah witari

Institutions
a) Faculty of Medicine and Health Sciences, University of Warmadewa, Denpasar, Bali
*) diahwitari[at]gmial.com
b) Mangusada General hospital, Badung, Bali

Abstract
Premature rupture of the membranes is the spontaneous rupture of the membranes when it has not shown signs of labor, or if one hour later there are no early signs of labor. Some risk factors for premature rupture of membranes in the mother can be influenced by spelling factors, maternal age, parity, gestational age and a history of premature rupture of membranes (KPD). The purpose of this study was to determine the characteristics of maternity with premature rupture of membranes at Mangusada General hospital. This research is a descriptive study using secondary data. The results showed that the characteristics of maternity with early rupture of amniotic events in Mangusada General hospital were based on the highest maternal age at the age of 20-35 as many as 175 cases (70.6%), based on the highest age at term (> 34 weeks) by 213 cases (85.9%), based on the most parity occurred in nulliparous as many as 134 cases (54.0%), based on the majority of maternal occupations in private employment as many as 122 cases (49.2%), based on the previous history of KPD the most occurred in mothers without history Previous KPD was 218 cases (87.9%).

Keywords
premature rupture of membranes, Mangusada General hospital

Topic
Biology

Link: https://ifory.id/abstract/WxFMUVKP6RLe

Corresponding Author
Ria Arafiyah

Institutions
Universitas Negeri Jakarta
Universitas Indonesia

Abstract
Usually, learners achievement is known by the end of the course, this is very late because of improvements to enhance the quality of learning cannot be performed. Learners achievement prediction can be used to solve this problem. Various attempts were made to get a learners achievement models are closer to reality. This study aims to review research on the factors that affect learner-s achievement and design of modeling on predicting learners achievement. Those models are explored to agree on which one is the best. The reason of that among others to several components can improve success such as teacher pedagogic methods, learning media, learners tools etc that can be refined along learning process so that will improve the learners achievement. This study compares and explores several models to seeks the strength and weakness of the models. We expected to find which models perform better compare each other and inform what factors can improve learner achievement.

Keywords
e-learning, modeling, predicting learners achievement

Topic
Computer Science

Link: https://ifory.id/abstract/L4kw8dnH3fBM

Corresponding Author
Farid Perdana

Institutions
1. Program Studi Farmasi, Fakultas Matematika dan Ilmu Pengetahuan Alam Univesitas Garut Jl. Jati No. 42 B Tarogong Garut, Jawa Barat
*ardi[at]uniga.Ac.id

Abstract
Plant diversity in Indonesia is a very big asset especially volatile oil content derived from various types of crops in Indonesia. Essential oils or also called volatile oil or essential oil is the term used for volatile oil. Grass essential oil of vetiver (Vetiveria Zizanioides L.) Obtained by steam destilation. Gas chromatography mass spectroscopy (GC-MS) is a dynamic method for the separation and detection of comfound-volatile compounds in a mixture. The purpose of this study was to determine the quality of vetiver oil from Garut Regency from two different places using gas coromatography - mass spectroscopy (GC-MS). Based on the results of gas chromatography - mass spectroscopy, the essential oil of H. Suganda fragrant roots identified 65 components or compounds, with the most dominant compound being isokhusenic acid, while the essential oils of vetiver campoeng garoet identified 79 components or compounds, with the most dominant compounds (3E) -5-Isopropyliden-6-methyl-3,6,9-decatrien-2-one.

Keywords
Keywords: Vetiveria zizanioides L., fragrant root, essential oil.

Topic
Chemistry

Link: https://ifory.id/abstract/PbWYDL43V6uM

Corresponding Author
I Gede Suranaya Pandit

Institutions
(a,*)Faculty of Agriculture, Universitas Warmadewa, Denpasar, Indonesia
suranaya_pandit[at]yahoo.com
(b)Post Graduate Program, Universitas Warmadewa, Denpasar, Indonesia
(c) Faculty of Medicine and Health Science, Universitas Warmadewa, Denpasar, Indonesia

Abstract
Tilapia fish that is boiled with Balinese spices or it is also called by Balinese people as nila nyat nyat, exactly is one of the most popular Balinese dishes because it is very tasteful. But until now, none has done packaging and storing it at cold temperature for resale. The aim of this study is to understand the interaction among the differences in type of packaging and storage time on quality of tilapia fish that is boiled with Balinese spices. We used factorial completely random design with four replications, first factor is type of packaging, that is consisted of 2 levels: A1=Styrofoam box and A2=Plastic box, second factor is storage time, that is consisted of 3 levels: B1=0 day, B2=3 days, B3=6 days. Objective observation includes water content, protein content, total volatile bases, total plate count, whereas subjective observation or organoleptic such as appearance, texture, odour, and taste. The result of the study showed that there was no interaction between the type of packaging and storage duration on the quality of tilapia fish that is boiled by Balinese spices. Based on objective observation, storage time at cold temperature still maintain good quality of tilapia until sixth day.

Keywords
Type of packaging, storage time, tilapia, nila nyat nyat

Topic
Biology

Link: https://ifory.id/abstract/x6ZWPCctM4U8

Corresponding Author
Dedi sadudin Taptajani

Institutions
a) Department of Industial Engineering
b) Department of Informatics Engineering
Sekolah Tinggi Teknologi Garut

Abstract
There are many strategies that can be carried out by the company that will have implications / implications, which in general, namely the principal actors or network members in the chain of supply chains of red bricks that consist of five organizations or parties namely suppliers, manufacturers, distributors, retailers, and consumers. The five principal actors must be as a totality. Next The nature of competition between supply chain networks is then the phasing implications of the supply chain process where the evolutionary process requires phasing, so it needs to be detailed, differentiated, and planned about what, who, and how for each element such as drivers, focus, benefits, tools, areas of action, guidelines, models, alliances, and training, The key to supply chain management is network integration or management among all related companies, the company is still owned by the owner, and there are no acquisitions so that the strategies developed are total and collective, not the strategy of individual companies. All relevant parties need to be included in order to produce a plan believed and implemented together, which will then be carried out by several targets which are specific performance benchmarks, as well as improving customer relations. the SCOR model (Supply Chain Operations Reference) is used to issue performance measurement standards in the supply chain so that it can be used for comparison with other industries. In this research, it is expected to get a solution to declare the impact of the red brick supply chain seen in terms of total effort in improving and or creating competitive advantage (new) so that competition no longer occurs between companies, but between one supply chain and another supply chain , or between one company network and another company network.

Keywords
Supply Chain, Strategic, Management, Supplier

Topic
Industry Engineering

Link: https://ifory.id/abstract/WMPcQBJe79v6

Corresponding Author
Pri Iswati Utami

Institutions
a) Faculty of Pharmacy, Universitas Muhammadiyah Purwokerto
Jalan Raya Dukuhwaluh, Kembaran, Purwokerto, Indonesia
*asmiyentidjaliasrindjalil[at]ump.ac.id

Abstract
Adulteration of synthetic pharmaceutical drugs in jamu is prohibited by law in Indonesia. Glibenclamide is one of the drugs commonly added to jamu. The purpose of this study was to obtain a valid high performance liquid chromatography (HPLC) method for qualitative and quantitative analysis of glibenclamide in antidiabetic jamu. HPLC separation was carried out with a Kromasil 100 C18 column (150 x 4.6 mm i.d, 5 μm particle size) using methanol: water (75:25) v/v as the mobile phase at a flow rate of 0.5 mL/min, UV detection was set at 301 nm. There was no potential interference from other compounds at the glibenclamide retention time (retention time of 5.10 minutes). The method has good linearity (r = 0.9936) in the range 10-50 mcg/mL. The detection limit of the method was 6.21 mcg/mL while the quantitation limit was 20,71 mcg/mL. The relative standard deviation (RSD) of intraday precision was 1.923%. The average recovery using standard addition method was 100.65 ± 16.89%. The application of the HPLC method for the analysis of five antidiabetic jamu samples obtained from the market in Purwokerto showed that glibenclamide was detected in one sample with a level of 1.88 ± 0.25 mcg/g.

Keywords
antidiabetic jamu, glibenclamide, HPLC, validation

Topic
Chemistry

Link: https://ifory.id/abstract/dHXUBpAxn3VL

Corresponding Author
Pande Ayu Naya Kasih Permatananda

Institutions
(a). Faculty of Medicine, Nursing, and Public Health, Universitas Gadjah Mada, Yogyakarta, Indonesia
*nayakasih[at]gmail.com
(b). Faculty of Medicine and Health Science, Universitas Warmadewa, Denpasar, Indonesia
(c). Faculty of Medicine, Universitas Tadaulako, Palu, Indonesia

Abstract
Inflammation is a local reaction from living tissue or cells to a stimulation or injury. This anti-inflammatory test aims to determine the effect of anti-inflammatory treatment on changes in edema volume in rat-s feet after induced by carrageenan. Anti-inflammatory that is used in this research is celecoxib. Celecoxib is a non-steroidal anti-inflammatory agent that works by inhibiting selective cyclooxigenase enzymes. In this pharmacological screening test, 2 wistar strains of white rats were tested, which were weighed before anti-inflammatory administration. The rats were divided into 2 groups, namely the negative and positive control group. As for the negative control, the treatment was given 0.9% NaCl as much as 4 mL per oral, while for positive control was given celecoxib 100 mg / 55.5 ml. the volume of edema in the rat-s feet was measured using pletismometer. We found that there was no significant difference in the volume of edema between the group given 0.9% NaCl and the group given celecoxib. Therefore, we conclude that celecoxib as an anti-inflammatory agent is not able to inhibit edema in rat-s feet.

Keywords
anti-inflammatory, rats, celecoxib

Topic
Pharmacology

Link: https://ifory.id/abstract/8cXQtkfA2wvM

Corresponding Author
Darmadi Darmadi

Institutions
Chemical Engineering Department, Faculty of Engineering, Universitas Syiah Kuala

Abstract
The modified-polyurethane-foam adsorbents for mercury adsorption can typically reduce the potential impact of mercury pollution. This study aims to investigate the essential characteristics of adsorbents, made of castor oil, methylene diphenyl diisocyanate, glycerol, merely modified by zeolite and bentonite addition. Polyurethane foam with optimum performance is further characterized to find out its physical and chemical properties including: functional groups (FTIR), surface morphology (SEM) and specific area (BET). The FTIR characterization show that polyurethane foams without necessary modification typically contains a C = O group as its typical group scientifically shown by its specific wavelength (1654–1516 cm-1, 1680–1514 cm-1, and 1593–1516 cm-1). The modified-polyurethane foam properly contains a C = CH group with a typical wavelength of 3008 cm-1 with zeolite addition. It also shows the visible wavelength of 3007 cm-1 with bentonite addition. The SEM characterization show that zeolite-modified-polyurethane foam properly maintains a smooth and flat structure with small pores, whereas polyurethane foam with bentonite typically has an irregular particle shape. The obtained BET area for sample 60% zeolite, 50% MDI and 40% gliserol is precisely 2.8257 m2/g. Whereas for the narrowest BET area in sample 40% zeolite, MDI 50%, and gliserol 60% is merely 0.773 m2/g.

Keywords
polyurethane, polyurethane foam, characterization, zeolite, bentonite

Topic
Chemical Engineering

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

Corresponding Author
Khairul Anam

Institutions
a) Mechanical Engineering Department, Brawijaya University
Jl. MT Haryono 167, Malang 65145, Indonesia
*khairul.anam27[at]ub.ac.id

Abstract
The tensile strength of rubber sap additive with different NaOH concentration was studied on the wood surfaces. The adhesives were cured at room temperature for different curing times (3, 6, and 12 hour) with NaOH concentrations of 0 wt%, 5 wt%, and 10 wt%. The results shown that the tensile strength of the adhesive joint increased when the NaOH concentrations and curing times is increasing. This evidence can be easily explained by investigating the water content in the adhesive. The highest tensile strength of 0.259 MPa occurred when the NaOH concentrations and curring time of 5 wt% and 12 hours, respectively. However, this value is remained low compare to synthetic adhesives. In addition, from images of adhesives after breaking of samples, the failure mode of the adhesive joint is dominated by adhesive failure.

Keywords
Tensile strength; Rubber sap adhesive; NaOH; Curing time

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/cbLFCE26tTDu

Corresponding Author
ibnu hadi

Institutions
a) Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jalan Rawamangun Muka, Jakarta 13220, Indonesia
*ibnu_unj[at]yahoo.co.id

Abstract
A set of matrices integers modulo prime can form a finite group. This group has trivial and non-trivial subgroups. The trivial subgroup is normal clearly and for a non-trivial subgroup the normal properties will be investigated. Furthermore, if a non-trivial subgroup is a normal subgroup, then a quotient subgroup can be constructed. This paper discusses the characteristics of normality of quotient subgroup on matrices integers modulo prime. A group is constructed by matrices integers modulo prime. Here we considered some properties of this group. The order of group play an important role in this quotient subgroup. By this concept, we derive some result of normality of quotient subgroup. From this paper, it was found that the subgroup order had an effect on the normality of a quotient subgroup.

Keywords
Order of Group, Normality of Quotient Subgroup, Matrices Integers Modulo Prime

Topic
Mathematics

Link: https://ifory.id/abstract/A2PKpWwvQDrZ

Corresponding Author
Ayu Rahmaniyah

Institutions
(a*) Students of Civil Engineering Department, Institut Teknologi Sepuluh Nopember (ITS), Sukolilo, Surabaya, 60111, Indonesia
ayuramukti[at]gmail.com
(b) Civil Engineering Department, Institut Teknologi Sepuluh Nopember (ITS)
(c) Regional and Urban Planning Department, Institut Teknologi Sepuluh Nopember (ITS)

Abstract
The Pasuruan City Government has carried out activities to improve the quality of local road infrastructure in slum areas through the NUSP program, in order to realize the target city without slums in 2020. The sustainability of this local road function is strongly influenced by the sustainability of infrastructure assets management stages starting from the planning and construction, operation, and maintenance that conducted by the Utilization and Maintenance Groups (KPP). This study aims to determine the priority factors for the development of the sustainability of local road functions in slums with community-based management in Pasuruan City. Determination of priority factors is carried out by assessing the suitability of the sustainability factors through the assessment of questionnaires to the KPP, while the priority factor for the development of sustainability with the method of Borda analysis is based on the experts assessment. The results of this study indicate that in the operation stage the factors that need to be prioritized are the physical condition of the infrastructure, the management quality and the strengthening of institutional capacity. Whereas in the maintenance stage, it is necessary to prioritize the management quality, monitoring and evaluation, and coordination with the government.

Keywords
Local Road; Sustainability Functions; Priority Factors; Community Based Management

Topic
Civil Engineering

Link: https://ifory.id/abstract/P6D3BgEmvRNH

Corresponding Author
Anak Agung Ayu Lila Paramasatiari

Institutions
Faculty of Medicine, Warmadewa University

Abstract
Introduction: Concentration disorder is a condition thats difficult to focus attention. The factors that influence concentration are environment, sociality and psychology. Concentration can also be influenced by a person sleep duration. This can affect academic achievement at school. Objective : This research aims to find out the correlation between sleep duration, and concentration level in Elementary School students in Denpasar Methode: The research design was cross-sectional study; data were collected using questionnare at three elementary school in Denpasar. The amount of the subjects were 96 respondents was selected by multistage cluster random sampling method from Harapan Mulia, SDN19 Pemecutan, SDN 27 Pemecutan elementary school. Data was analyzed using Chi-Square statistical test by Statistical Package for the Social Sciences for Windows 22 (SPSS) program. Result : The results showed 96 respondents collected from elementary school; 49% were males and 51% were females. The most aged of student were 10 years old. The low, medium and high concentration level were 27,1%; 46,9%;26% respectively. The less and enough sleep duration were 67,7%; 32,3% respectively. The percentage of non-breakfast subject was 35 persons (36,5%) and the breakfast subject was 61 persons (63,5%). The result was showed that there was a significant relationship (p<0,05) between sleep duration, with the level of concentration. Conclusion: The conclusion can be drawn that there was a positive and significant relationship between sleep duration and concentration level on Elementary School students in Denpasar.

Keywords
Sleep duration, Concentration Level, and Elementary School Students

Topic
Biology

Link: https://ifory.id/abstract/U3CeYgNqHW2d

Corresponding Author
Husni Husin

Institutions
a) Department of Chemical Engineering, Universitas Syiah Kuala, Darussalam Banda Aceh, 23111, Indonesia
b) Graduate School of Chemical Engineering, Universitas Syiah Kuala, Darussalam Banda Aceh, 23111, Indonesia
*husni_husin[at]che.unsyiah.ac.id

Abstract
Study of hydrogen production from aqueous glycerol solution using RuO2-loaded LaNaTaO3 photocatalyst is reported in this paper. This research aims to investigate the influence of RuO2 co-catalyst and glycerol as a sacrificial reagent on photocatalytic process of hydrogen production. La-doped NaTaO3 was prepared via sol-gel route. The RuO2 was loaded onto the LaNaTaO3 surface by impregnation method. The sample were characterized by Scanning Electron microscopy (SEM) and X-ray diffractometer (XRD). The XRD spectrum shows that the La-NaTaO3 photocatalyst has high crystallinity. The SEM analysis indicates that the size of La-NaTaO3 photocatalyst is ranging from 100 to 250 nm without agglomeration and RuO2 as a co-catalyst is well loaded into the La-NaTaO3 surface. Loading RuO2 on La-NaTaO3 photocatalyst is proven to increase the rate of hydrogen production by 9.8 times with addition of glycerol as a sacrificial reagent. The highest hydrogen production activity was obtained at 0.3 wt.% ruthenium loading and increase significantly with increasing glycerol concentration. The role of co-catalyst RuO2 and glycerol as sacrificial reagent enhanced the performance of La-NaTaO3 photocatalyst by playing an active role in the separation efficiency of electrons and holes and the reaction of hydrogen formation.

Keywords
Hydrogen; Ruthenium oxide; Sodium tantalum oxide; Glycerol

Topic
Chemical Engineering

Link: https://ifory.id/abstract/6UWXFL3p4fKP

Corresponding Author
Sri Aprilia

Institutions
1Chemical Engineering Department, Engineering Faculty, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia
2Mechanical Engineering Department, Engineering Faculty, University of Abulyatama, Aceh Besar, Indonesia
*sriaprilia[at]unsyiah.ac.id

Abstract
Natural weathering of rice husk ash filled in polypropylene composite films has been investigated by exposing the samples to a tropical clime for 4 months with max-min temperature 22 - 30oC and relative humidity 75%. Rise husk ash filled in film composite polypropylene effect of filler loading was 1, 3, 5, 7 and 9% and compare with neat composite. The silica from rice husk ash was isolated with acetic acid. The silica content was analyzed by XRD, SEM and FTIR to show crystallinity, structure and functional group. The weathered film composites polypropylene was investigated before and after exposure and analyzed the morphology with FTIR and SEM. Mechanical test for the film composites polypropylene take place for tensile strength and percentages of elongation at break. The result show that the tensile strength and percentages of elongation at break decrease after natural weathering. The average tensile strength of film composites polypropylene decrease about 64.54 ± 17.50% and the elongation at break of film composites polypropylene decrease about 49.33 ± 15.28%.

Keywords
silica from rice husk ash, film composites polypropylene, morphology and mechanical test

Topic
Chemical Engineering

Link: https://ifory.id/abstract/DU6T3cq2ykrp

Corresponding Author
DADANG HAFID HAFID

Institutions
Technological and Vocational Education Students Programs Graduate School, Universitas Pendidikan Indonesia.
Jl. Dr. Setiabudhi no 229, Bandung, West Java, Indonesia.

Abstract
Abstract- This research conducted with the aim of analyzing the application of work-based learning models that are being carried out in vocational school (SMK). The scope of this research relates to the frame work used, weaknesses, strengths and characteristics of industrial involvement in the education process. This research was conducted by survey method, namely by directly observing the work-based learning process, with data obtained from the results of observations, interviews and literature studies from the program implementation manual. The object of his research is a school that carries out a work-based learning model in West Java, among others, Bandung Vocational High School with the name Toyota Tehcnician Education Program (T-TEP) and ASTRA Motor Guidance, 2 Subang Vocational School with the name Teaching Factory program, and Weak Abang Vocational High School under the name of the Yamaha Fostered Class Program. From the results of this research, it was found that the three schools that applied work-based learning models had their respective characteristics, and had their respective weaknesses and strengths, but from the three schools there was one similarity, namely using frame work synchronization, namely the curriculum arranged based on synchronization between compulsory competencies in school with industry competencies.

Keywords
Keyword; a learning approach that leverages the workplace to structure the experience gained in the workplace

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/mKtFHp2aVjMz

Corresponding Author
Neneng Windayani

Institutions
1 Prodi Pendiidkan Biologi, 2Prodi Pendidikan Kimia, Fakultas Tarbiyah dan Keguruan, UIN Sunan Gunung Djati Bandung Jl. A.H. Nasution No. 105, Bandung 40614, Indonesia

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

Abstract
In this study, the nutritional composition of milk kefir cream and hunger resistance on its use as a menu of pre-dawn meal were examined. The pre-experimental design of intact group comparison was used on 34 research subjects. The experimental group (n = 17) treated pre-dawn meal using milk kefir cream and cereal while the control group used a complete per-dawn meal menu. The time of preparation, the implementation of the meal and hunger resistance were calculated and recorded. Based on the results of the study, in terms of methods, consuming 250 mL of milk kefir cream and cereal only takes about 7.9 minutes with a hunger resistance of up to 9.4 hours. With this composition and method, it is suggested that the results of this study can be useful to be an effective alternative of pre-dawn meal both in Ramadan and other Sunnah fasts.

Keywords
pre-dawn meal, milk kefir, fasting, glycemic index

Topic
Chemistry

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

Corresponding Author
Sitti Nursetiawati

Institutions
State the University of Jakarta, Faculty of Engineering, Cosmetology Education, East Jakarta, Rawamangun 13220
*sitti-nursetiawati[at]unj.ac.id

Abstract
Bio-remediation is one technique to reduce environmental pollution and renew soil with the help of microorganisms and plants. The process carried out includes detoxification of toxic chemicals by cleaning the environment naturally and economically. This study aims to identify waste recycling, modification of ecology-based farming systems, and test traditional plants as a source of bioremediation. Then, bacteria and bioremediation results will be used as liquid fertilizer. Liquid fertilizers are processed through bioremediation techniques, then reused as nutrients for organic cosmetics plants. The research method is carried out qualitatively and its application is in a polluted environment. The research findings state that there is a positive impact on reducing environmental pollution, especially in reducing the volume of waste and the smell of garbage. Meanwhile, the success of bio-remediation in liquid fertilizer depends on the Hydrogen (H2) cycle. In addition to H2, there are carbon (C), sulfur (S), and nitrogen (N) during the bio-remediation process which encourages the bio-remediation of liquid organic fertilizer to be able to fertilize the plant source of organic cosmetics. Thus, cosmetics can be said to be organic as a whole.

Keywords
Bioremidiation technique, liquid fertilizer, organic cosmetics

Topic
Environmental Engineering

Link: https://ifory.id/abstract/EA6nZYb3rmKW

Corresponding Author
Eko Puswanto

Institutions
a) Balai Informasi dan Konservasi Kebumian - LIPI
*epuswanto[at]gmail.com

Abstract
In general, the research area has complex geological characteristics. Wadas Malang is non-volcanic area, dominated by sedimentary rocks, transition between Waturanda and Penosogan Formation. Wadas Malang area has a hot spring manifestation which may indicate geothermal potential. Unfortunately, this geothermal manifestation has not yet been seriously developed. Absolutely, this potential could be integrated with Sindaro waterfall as one of geotourism destination at the Karangsambung-Karangbolong National Geopark. Wadas Malang hot spring interpreted as non-volcanic geothermal system. The occurrence of this surface manifestation could be identified using Fault and Fracture Density (FFD) method, lyneaments analysis from SRTM and digital topography data. Regional geology and geochemistry data of the hot spring manifestation from the literature have been used as reference in this study. This study indicated that the occurance of the Wadas Malang hot spring is related with outflow system which are controlled by Kedungkramat sinistral fault as a result of tectonic deformation. The occurrence of this manifestation are not only controlled by fractures, but also by regional hydrology, contact and formation dips.

Keywords
hot spring, geothermal, fracture, fault

Topic
Land Management

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

Corresponding Author
Sitti Nursetiawati

Institutions
a, b) State the University of Jakarta, Faculty of Engineering, Cosmetology Education, East Jakarta, Rawamangun 13220
*sitti-nursetiawati[at]unj.ac.id

Abstract
Saponification is the chemical reaction process of fatty acids with KOH, KK2CO3, NaOH, and Na2Co3 so as to produce soap with carbonyl salt content. One of the benefits of saponification is creating a product that can produce economic value. This research was conducted using a quantitative method involving 50 respondents from housewives who received material to training related to making body soap. The research location was chosen purposively. The results of the study stated that (a) saponification soap made can be used for the body, but it is not suitable for use as a facial soap. Because, the pH content of the face and the saponification of soap need to be adjusted, including the ingredients suitable for facial skin, (b) further research is needed regarding natural preservatives and skin safe, so that the saponification soap is durable, (c) soap making with saponification techniques that are quite easy to apply, (d) there is a relationship between soap-making education and the high interest in housewife entrepreneurship, and (e) what is needed to increase the entrepreneurial interests of housewives is the practice of packaging products to the distribution chain. Keywords: Saponification techniques, body soap, education, entrepreneurship

Keywords
Saponification techniques, body soap, education, entrepreneurship

Topic
Industry Engineering

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

Corresponding Author
MEI VIANTIKASARI

Institutions
Master of Environmental Science Diponegoro University

Abstract
The rapid increase of human population have resulted in high volume of solid waste generated. In 2017 the total population of Pati Regency was 1.246.691 with reference to SNI 19-3983-1995, so that the solid waste generation could be estimated at 3.116.727 liters / day. Landfill is one of basic needs of each city/regency to manage its solid waste. Sukoharjo Landfill is one of the landfill sites in Pati Regency located in Sukoharjo village Margorejo subdistrict Pati Regency. The existence of landfill often has negative impacts and positive impacts for the local community. Sukoharjo Landfill has been established since 1994 and the government continues to develop landfill management in order to reduce negative impacts and increase positive impacts on the local community. The aim of this study are to know the economics impact of Sukoharjo Landfill for the community in Sukoharjo Village Subdistrict Margorejo Pati Regency and give recommendation for the government in the form of strategies to increase economics impact for local community towards the existence of Sukoharjo landfill. The method of this research is descriptive qualitative. The data were collected through questionnaires, interviews, observation and documentation. The data were analized using SWOT analysis to determine alternative priority strategies.The results showed that the local community felt the economics impact of the Sukoharjo landfill. To increase the economics impact of the existence of Sukoharjo landfill for the local community, the following recommendations can be given: improvement of methane gas management technology, strengthen coordination with the government of Sukoharjo village, development of Sukoharjo landfill as education tourism attraction, empowerment of surrounding scavenger to sort of waste in Sukoharjo landfill, and empowerment of local community in waste reduction activities at Sukoharjo landfill.

Keywords
Sukoharjo Landfill, Economics Impact, Local Community, Strategies, Landfill Management

Topic
Rural and Regional Governance

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

Corresponding Author
Saripudin Saripudin

Institutions
Universitas Pendidikan Indonesia

Abstract
Access to quality of education in the era of ICT technology is growing so rapidly, by utilizing this technology ideally it is not a problem, thus the presence of technology can be a problem solver that occurs such as inequality of quality education material and access to the intended materials, this is certainly a dream all parties because, in reality, all this is not an easy job. The biggest challenge in equalizing the quality of education is experienced by almost all countries in the world, especially countries with large territories and populations. Inequalities or gaps in differences and equal access to quality education material occur in almost every country in the world. Distance learning can be carried out easily by utilizing ICT infrastructure. Almost every country in the world strives to provide open wide access through the use of web-based applications to facilitate and facilitate the population of the needs of teaching materials according to the population. This article will discuss, analyze and explore the comparison of the accessibility of the Open Educational Resources (OER) repository in developed countries with developing countries.

Keywords
Open Educational Resources OER, Learning Resources, ICT, Vocational Education, Repository

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/K3eDVZvYTA6M

Corresponding Author
Puguh Dwi Raharjo

Institutions
Indonesian Institute of Science

Abstract
Land use is one of the dynamic surface parameters that will changes. Semarang is the capital city of Central Java Province which experienced a fairly high land use change. The impact of regional development is the land use changes, that is occur from agricultural land into built land. Analysis with remote sensing data is a cheap and accurate method to identifying of the land use changes. Landsat imagery is data that has a long data record series. So that the data can be used to surface monitoring. Landsat image data has a multispectral band that can be used for digital analysis. Maximum likelihood Classification is a digital classification that gives quite accurate results. The results obtained in this study is map comparison of the land use type in Semarang City between 1991 and 2019. Changes occur on agricultural lands and bare land into satlement, so that the right targets in development need to be. So that the results can be used as recommendations for the Central Java Provincial Government for the direction of the sustainable development sector.

Keywords
digital classification, Land use, Remote sensing, Semarang, sustainable development

Topic
Land Management

Link: https://ifory.id/abstract/M3GhfB26UEPL

Corresponding Author
Sitti Nursetiawati

Institutions
a) State the University of Jakarta, Faculty of Engineering, Cosmetology Education, East Jakarta, Rawamangun 13220
*sitti-nursetiawati[at]unj.ac.id
b) Bogor Agricultural University, Faculty of Human Ecology, Family and Child Development Studies, West Java, Bogor, Dramaga, 16680

Abstract
The agricultural potential in Indonesia with its vast area and abundant natural resources is quite strategic for the development of cosmetics plants. In addition to the region, creativity in economic activities can reduce poverty and minimize the desire of farmers to switch professions in other fields. This research was conducted to see the influence of the development of the creative economy in rural areas in two different regions, with a total of 68 farmer families; 34 people of vetiver grass farmers in the Pamagarsari village of Bogor and 34 for farmers in the Cisarua Bogor tea plantation. The research was conducted through quantitative and qualitative techniques. Qualitative research was conducted by interview using UNESCOs indicators of Culture and Creative Industries in agriculture. While quantitative techniques are measured through the Family Inventory of Resources for Management (FIRM) questionnaire. The results of different tests stated that there were no significant differences regarding the management of family economic resources carried out in two agricultural and plantation areas. While the influence test analysis states, the development of creative industries influence the management of economic resources of farmer families in the field of nursery for cosmetic plants.

Keywords
Management of family economic resources, agricultural creative industries, cosmetics

Topic
Management Science

Link: https://ifory.id/abstract/bN46tRZJPdCQ

Corresponding Author
ADI SUSANTO

Institutions
Center for brackish water aquaculture

Abstract
Sea bass (Lates carcarifer) has been raised in brackish water as well as freswaeter ponds and marine cages. The increasing demand of bigger size jevenile is the consequecy of rapid expanding of open sea cage culture. Juvenile production in Resiculation Aquaculture System (RAS) was tested to meet the demand of approximately 100 g of fish. RAS was set-up using numerous component such as settlement tank, physical filtration, biofilter and pure oxygen injection. Result indicated that daily growth rate was 1.21 gram with final body weight of 122 gram and survival rate of 94,3 %. Water quality was in range of acceptable value execpt dissolved oxygen that fluctuated from 3 ppm to saturated.

Keywords
Sea bass, RAS

Topic
Agricultural Development

Link: https://ifory.id/abstract/xUH74PKAB8eT

Corresponding Author
Astri Rinanti

Institutions
Universitas Trisakti

Abstract
LDPE plastics are polymers that are widely used because of their waterproof, flexible and affordable characteristics. This study aims to degrade LDPE plastic with temperature and pH variations using biotechnology by a mixed cultures of Thiobacillus sp. and Clostridium sp. bacteria. This mixed bacterial cultures are grown in the growth media of Stone Mineral Salt Solution (SMSs) with a batch system. Analysis of Gravimetric method is used to find out the difference in weight of LDPE plastics and Fourier Transform Red Infrared Spectroscopy (FTIR) is used to determine the change of functional groups. To obtain optimum conditions that produce the highest degradation, temperature variations (oC) 25, 30, 35 and pH 5, 7, 9 were done. Optimum removal of LDPE occurs at 30oC with acidity (pH) 7. It shows that mixed cultures of Thiobacillus sp. and Clostridium sp. bacteria has the ability to degrade LDPE plastics with a percent removal reached 10-15%.

Keywords
Biodegradation, Thiobacillus sp., Clostridium sp., Low Density Polyethylene (LDPE), Stone Mineral Salt Solution (SMSs).

Topic
Environmental Engineering

Link: https://ifory.id/abstract/QBr97eMHWKC4