Indonesia Conference Directory

Corresponding Author
wehandaka pancapalaga

Institutions
The Faculty of Agriculture and Animal Husbandry, University of Muhammadiyah Malang, INDONESIA

Abstract
Slaughterhouse waste can cause environmental problems. One of them is the contents of cows rumen which is generally thrown away without being utilized. The contents of the cows rumen contain a lot of enzymes besides that it contains a number of potential bacteria as bioactivators in the process of making goat feces fertilizer. The aim of this study was to evaluate the quality of goat feces fertilizer which was fed to the rumen of cattle. The materials used are goat feces and cow rumen contents. The research method uses a completely randomized design (CRD) experiment. The percentage treatment of cows rumen contents is different, namely 0%, 5%, 10% and 15%. The parameters measured: levels of N, P, K, organic C, C / N and water content. The results showed that the addition of rumen content in the manufacture of goat feces fertilizer had a very significant effect (P <0.01) on organic C content, Phosphorus, Nitrogen and C / N values, but did not affect (P> 0.05) potassium value and water content. The results obtained by the addition of 15% rumen content in the manufacture of goat feces fertilizer will provide 41.19% organic C levels, Phosphorus 0.15%, 1.59% Nitrogen, and C / N values of 25.05%. The quality of goat feces fertilizer produced has fulfilled SNI 19-7030-2004. Conclusion that the provision of rumen contents can increase the P, Nitrogen, C organic content and reduce the C / N value in the manufacture of our feces fertilizer

Keywords
Fertilizers, goat feces, Rumen contents, fertilizer quality

Topic
Environmentally Sustainable Agriculture

Link: https://ifory.id/abstract/9axkwJXfp7Y3

Corresponding Author
Sutikno Madnasri

Institutions
1,4,5) Department of Electrical Engineering, Dian Nuswantoro University, Semarang, Indonesia
2,3) Advanced Composite Laboratory, Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang

Abstract
The new Electronic nose (enose) instrument is able to detect diseases through aroma blood, secret, stool, breath and urine. Scientists in the world develop enose for early detection of diabetes mellitus (DM). They developed a device and an enose recognition algorithm. Enose is an instrument consisting of hardware and software that contains a pattern recognition algorithm (PARC-Pattern Recognition). The instrument is able to provide decisions in realtime, sensitive to aroma changes and portable. A large number of e-nose instruments, based on a variety of technologies and operational mechanisms, are available for early detection of diabetes mellitus. Some of the common enose technologies used are polymer sensors (CP), metal-oxide semiconductors (MOS), and nano particles. The E-nose device is useful in designing portable and mobile technology as a remote monitoring tool for patients who require intensive control instulin. This article is a recent system review and enose algorithm, developed over the past decade, which has potential applications for early detection of diabetes mellitus. This article discusses a review of the development of enose for early detection of diabetes, starting from the use of the type of sensor, comparison of the number of sensors, the use of feature characterization methods, feature matrix, feature extraction methods and pattern recognition methods.

Keywords
Review, diabetes detection, enose

Topic
Theoretical and Analysis in Materials

Link: https://ifory.id/abstract/FdZnRQckarX8

Corresponding Author
Aulia Adzkia Fauzi

Institutions
Agricultural Technology, Universitas Gadjah Mada
Jalan Agro No 1, Yogyakarta
*adzkiaaulia[at]gmail.com

Abstract
Cocoa is one of the potential agricultural resources in Indonesia but still lacks the attention of stakeholders to get the best economic value. It is important to encourage the cocoa business industry to capture opportunities in the cocoa processing business in the future. Taman Teknologi Pertanian in Nglanggeran is an SME which is also a business incubator that has produced various chocolate products. The design used in this research was explanatory research with the process of data collection through interviews, observation, and questionnaires. This analysis consists of two steps of weighting and prioritizing. The weighted score of the IFE and EFE matrix is (2.5671; 3.1132). SWOT diagram is used to determine the current position of the company which is on the second quadrant (1.1895;-0.0460) which refers to the S-T strategy. The chosen strategy triggered to do diversification strategy as doing product innovation gradually according to the consumer needs. Concentric diversification for internal can be done by utilizing cocoa peel waste as scrubs, whereas, concentric diversification for external can be done by developing agro-tourism. These strategies support sustainability in the area.

Keywords
cocoa, internal factors, external factors, strategic planning, SWOT analysis, Taman Teknologi Pertanian

Topic
Environmentally Sustainable Agriculture

Link: https://ifory.id/abstract/qmM4GYkuN8Kp

Corresponding Author
Yuningtyas Nely Kusuma Dewi

Institutions
a) Department of Physics, Faculty of Sains, Institute of Technology Sepuluh Nopember
Raya ITS Street, Keputih, Surabaya 60111
*yoyok[at]physics.its.ac.id

Abstract
This study aims to determine the effect of annealing temperature on the barium titanate (BaTiO3) films as a solar cell material. The synthesis of BaTiO3 uses barium hydroxide (Ba(OH)2) and titanium dioxide (TiO2) as the base material. The results of the deposition of BaTiO3 films were annealed with temperature variations of 400oC, 500oC, and 600oC with a holding time of 1 hour respectively. Characterization was carried out using X-Ray Diffraction (XRD) to determine the microstructure of the films, test the optical properties of the films with UV-Visible and Fourier Transform Infrared Spectroscopy (FTIR) to analyze chemical bonds between molecules and particle size was calculated using the Scherrer formula. The analysis showed a decrease in the energy gap and absorption for the higher annealing temperature. Variations in annealing temperature cause changes in microstructure, crystal size, and the degree of crystallinity that affect the energy gap and the absorption of BaTiO3 films.

Keywords
barium titanate, temperature annealing, energy gap, absorption, microstructure, crystal size, crystallinity

Topic
Nano Science and Technology

Link: https://ifory.id/abstract/cHRyt4WfjK2Q

Corresponding Author
Rahayu Relawati

Institutions
Department of Agribusiness, University of Muhammadiyah Malang

Abstract
Background: Pro-environmental producer behavior are increasingly urgent to implement an environmentally friendly industry. Aims: To identify the knowledge, attitudes, religiosity, and behavior of the food SME producers towards the environment. Materials and Methods: The research objects are SMEs of “tempe chips” in Malang City, East Java Province. The descriptive analysis is used to explain the findings of producer behavior related to the environment. Results: The study results show that the majority of producers already have knowledge of raw materials and production processes that are environmentally friendly, but only few of them know about the environmentally friendly product packaging. The producers- attitude supports environmentally friendly production processes, although is still at lower level than religiosity. The environmentally friendly producer behavior has not ideal in raw materials usage, production process, and packaging. They have implemented water and energy saving, but have not been able to avoid plastic packaging usage. Generally, the “tempe chips” SME-s performance are healthy. The majority of them are being increased in terms of production, profits, and sustainability of the production process. A small number of producers are declining in terms of production, profits, and face production discontinuity. Conclusion: Further research needs to analyze the effect of religiosity on the behavior of pro-environment producers. The recommendation given is to socialize the use of environmentally friendly product packaging to sell at a premium price. The premium price products are targeted to the middle to upper consumer segments. If it has been socialized, the use of environmentally friendly packaging is expected to become a general implementation of the food packaging.

Keywords
SME, producer behavior, pro-environment.

Topic
Environmentally Sustainable Agriculture

Link: https://ifory.id/abstract/W8mhkjwDCxRU

Corresponding Author
Safira Mintari Jayadininggar

Institutions
a)Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5 Malang 65145, Indonesia
b)Centre of Advanced Materials for Renewable Energy, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, Indonesia
c)Department of Physics, Universitas Negeri Surabaya, 60254 Surabaya, Indonesia
*markus.diantoro.fmipa[at]um.ac.id

Abstract
Nowadays, solar cell is one of the most promising energy conversion devices. DSSC as a third generation of solar cell extensively developed due to their advantages i.e. simple fabrication route, eco-friendly, and lower costs. The working principle of DSSC system is based on dye photon absorbing agents provided by photoanode which is consist of high band gap semiconductor materials. ZnO has been widely used due to its high level of electron mobility. However, the energy efficiency level of ZnO-based DSSC is lower than TiO2-based DSSC. So far there is no comprehensive study about TiO2@Ag-TiO2 nanocomposite as photoanode of organic DSSC. In this study, TiO2 as an inert material is used to encapsulate silver (Ag) from corrosion. Experimentally, ZnO and Ag@TiO2 nanoparticles were synthesized using coprecipitation and one-pot synthesized method, respectively at various molar ratio. The phase and structure were analyzed using X-ray Diffraction with Cu-Kα radiation. SEM-EDX is utilized to observe the morphology of the sample and identify their elements composition. The optical band gap was calculated via Tauc plot method from UV-Vis spectroscopy data. For confirming the photovoltaic performance of system, solar simulator with Keithley I-V meters was applied.

Keywords
nanocomposite, organic DSSC, TiO2/ZnO-Ag@TiO2, photovoltaic performance

Topic
Functional Materials

Link: https://ifory.id/abstract/aPDcwEh8X9T6

Corresponding Author
Bambang Yudi Ariadi

Institutions
Departement of Agribusiness, Universitas Muhammadiyah Malang, INDONESIA

Abstract
Background: Apple has long been known as a typical product in Malang. The sustainability of apple production is threatened, because the area of land and productivity of apples are decreasing, and the cost of producing apples is increasing. As a result, apple farming income has declined Aims: to analyze the sustainability of apple production in the future, simulate dynamic models of several scenarios, and provide alternative policies for decision makers Materials and Methods: The method used is modeling with a dynamic system approach followed by a simulation based on a predetermined scenario. Dynamic system modeling is done by means of a causal loop diagram (loops) that produces dynamic model structures and dynamic system behavior. The main data of the study are secondary data, including apple planting data, apple production and productivity. Primary data as a supporter is financial data on apple cultivation in Poncokusumo District, Malang Regency. The research data was analyzed using a dynamic system using Vensim software Results: The results showed that the sustainability of apple production consisted of 3 sub-models, namely sub-models; land ownership, productivity and production costs. In each sub model there is an input variable which functions to input data in each scenario that is made according to real conditions. This dynamic system model has five scenarios, namely (1) without policy; (2) policies for utilizing land resources; (3) productivity improvement policies; (4) policies for utilizing land resources and increasing productivity; (5) policies for substituting chemical pesticides. Conclusion: This dynamic system model has five scenarios, namely (1) without policy; (2) policies for utilizing land resources; (3) productivity improvement policies; (4) policies for utilizing land resources and increasing productivity; (5) policies for substituting chemical pesticides

Keywords
apple fruit, sustainability, system dynamics

Topic
Environmentally Sustainable Agriculture

Link: https://ifory.id/abstract/daJFcAzB6jfp

Corresponding Author
Sri Aliah Ekawati

Institutions
Laboratorium Waterfront City Development, Department of Urban Design and Planning
Hasanuddin University

Abstract
Connectivity is considered as a node which facilitates displacement from one place to another. Linkage becomes a basic system to arrange moving pattern in spatial planning, including coastal area planning, so that the movement become safe and comfortable. This paper is written to provide a knowledge base related to connectivity of moving system in coastal area of Makassar City which is dominated by tourism spots. Spatial analysis is used to identify pictures about linkage system in coastal area of Makassar City. Furthermore, comparison analysis between ideal and existing condition is needed to redefine connectivity systems in coastal area. Finally, this study found that Makassar people still depend on private vehicles. In addition, most of pedestrian ways are not integrated with public transportation lines.

Keywords
connectivity, linkage, coastal area, Makassar City

Topic
Urban & Transportation Sustainability

Link: https://ifory.id/abstract/3pKjAX6WhNmb

Corresponding Author
said Noor Prasetyo

Institutions
Faculty of Law
University of Muhammadiyah Malang
Jl. Raya Trlogomas No. 246, Malang, East Java, Indonesia
a) saidnoor[at]umm.ac.id

Abstract
in the digital era, electronic identity is something that is very important to protect because it is a representation of someone in an electronic system. Along with the development of information technology, this type of crime also developed with the emergence of cybercrime. One type of cybercrime that threatens someones identity is identity theft. This crime always haunts us when surfing in cyberspace. Many criminals target identity as the key to accessing someones personal accounts such as bank accounts, credit cards, and other accounts. This crime is a serious threat in the digital era, especially in Indonesia. This is due to a lack of awareness of citizens in protecting their identities and the existence of inadequate laws in providing protection. This situation is certainly a threat in strengthening the civil society in the digital era.

Keywords
Identity Theft; Indonesian Criminal Law; protection

Topic
Criminal Law

Link: https://ifory.id/abstract/kazn6PuJjYVC

Corresponding Author
Soni Zakaria,S.Sy. M.H.

Institutions
Department of Islamic Family Law
Faculty of Islamic Religion
University of Muhammadiyah Malang
246 Tlogomas Street, Malang-Indonesia

Abstract
This article describes the problems related to the application and implications of regional regulations or sharia regulations with some literature and reviews them in the perspective of theory of maslahah. This paper argues that some regional regulations that have sharia nuances aim at social control of the community and prioritize general welfare, while some of the sharia regulations are still lacking and far from the aims and objectives of establishing sharia regulations themselves and prioritizing the interests of certain groups and groups. This article also found that many local regulations that are not sharia-compliant actually have maslahah values in their application and their implications. Therefore the findings of this article state that regional regulations that have sharia nuances do not necessarily aim to uphold Sharia values. Whereas non-Sharia regulations actually have more Islamic values.

Keywords
Sharia Local Regulation, Maslahah

Topic
Islamic Law

Link: https://ifory.id/abstract/KJYCFkuVzg4f

Corresponding Author
Donny Dwiputra

Institutions
a) Theoretical Physics Laboratory, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung Jl. Ganesha no. 10 Bandung, 40132, Indonesia
*donny.dwiputra[at]ymail.com
b) Badan Pengkajian dan Penerapan Teknologi, BPPT Bld. II (19 th floor), Jl. M.H. Thamrin 8, Jakarta 10340, Indonesia}
c) Indonesian Center of Theoretical and Mathematical Physics (ICTMP), Indonesia

Abstract
The properties of many-body open quantum systems can be engineered in myriad of ways by appling external driving fields. Of interest here is the gain of transport efficiency due to the application of driving to exciton transport in a chain of qubit network. The key to explain the wide range of many-body phenomena is understanding how quantum entanglement propagates within the system. We study the entanglement properties between the qubit sites and analyze its role in energy transport in presence of external periodic driving. These results contribute to the understanding transport in noisy systems and point toward the prospect for designing advanced materials and structure assisted by noise and external driving.

Keywords
Quantum Mechanics, Open Quantum Systems, External Driving, Quantum Entanglement

Topic
Theoretical High Energy Physics

Link: https://ifory.id/abstract/GM9Xj6xBLzk8

Corresponding Author
Mona Wulandari

Institutions
Universitas Muhammadiyah Palembang

Abstract
One of the reforms in the field of Government Goods / Services Procurement is actually regulated through Presidential Regulation Number 54 of 2010 which has been revised with Presidential Regulation Number 70 of 2012 concerning Second Amendment to Presidential Regulation Number 54 of 2010 concerning Government Procurement of Goods / Services and Head of Policy Institution Regulations Government Goods and Services Procurement (LKPP) Number 14 of 2012 concerning Technical Guidelines. During this time the auction winners were controlled by certain people / groups that were usually loaded with practices of collusion, corruption and nepotism (KKN). This is clearly contrary to human rights. Thus the optimization and efficiency of state expenditure can be realized immediately. This research was conducted to find out how the procurement of goods / services through an electronic auction (E-Procurement) at PT Bukit Asam (Persero) Tbk. Field research, primary data collection is done by conducting interviews with parties related to this research.

Keywords
e-procurement, procurement of goods / services, implementation

Topic
Administratif Law

Link: https://ifory.id/abstract/FX4hAKQRYvEz

Corresponding Author
Riri Jonuarti

Institutions
a) School of Energy, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*riri.jonuarti[at]gmail.com
b) Department of Physics, Universitas Andalas, Jalan Universitas Andalas, Limau manis, Padang, 25163,
Indonesia

Abstract
Density functional theory (DFT) combined with random phase approximation (RPA) was used to determine the dielectric function of (5,0) zigzag and (5,5) armchair boron nitride carbon nanotube (BNCNT). The concentration of carbon atoms in the BNCNT structures varies by 20%, 30%, 40%, 50% and 60% of the total number of atoms in the structure. The results of the optical properties depicted in the dielectric function graphs for each (5,0) zigzag and (5,5) armchair BNCNT. The effect of each quantity of the carbon concentrations to the optical properties of those nanotubes is also discussed. The large concentration of carbon atoms in one BNCNT structure makes the dielectric constant increase which is indicated on the graph of the dielectric function at the energy point 0 eV by a real scale height. Furthermore, the large carbon concentration in the (5.5) BNCNT creates a new absorption peak at 0 eV energy. So that, by understanding that the concentration of carbon atoms in the BNCNT framework affects the optical properties of these hybrid materials, the material can be implemented in multiple applications.

Keywords
Density Functional Theory; Random Phase Approximation; Boron Nitride Carbon Nanotubes; The Concentration of Carbon; Optical Properties

Topic
Computational Physics

Link: https://ifory.id/abstract/Y3xruwtWcpU9

Corresponding Author
Mulyadi Tanzili

Institutions
universitas muhammadiyah palembang

Abstract
The rampant corruption is one aspect that requires low social discipline and is a big challenge for development. Corruption is the main weapon that is organized to strengthen power and freedom to support. Therefore the Minister of Law and Human Rights and Deputy Minister of Law and Human Rights on November 16, 2011 issued a Decree numbered M.HH-07.PK.01.05.04 concerning Tightening remission of inmates. Remission or reduction of the criminal period is the right of every prisoner or convict who is undergoing criminal independence day at the Correctional Institution (Lapas), which is regulated in Presidential Decree No. 69 of 1999 concerning Reduction of Criminal Period (Remission) jo PP No. 28 of 2006 concerning Amendments to Government Regulation No. 32 of 1999 concerning the Terms and Procedures for the Implementation of Penitentiary Guidance Rights that have been amended through PP No. 99 of 2012 concerning the Second Amendment to PP No. 32 of 1999.

Keywords
Effectiveness, Remission, Corruption Prisoners.

Topic
Criminal Law

Link: https://ifory.id/abstract/AMWvx9qmQkrj

Corresponding Author
Reny Reny

Institutions
Modeling and Inversion Laboratory,
Physics of Earth and Complex Systems,
Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology,
Jalan Ganesha Street number 10 Bandung, Indonesia, 40132

Abstract
The distribution of the volcanoes in indonesia gives positive impacts in the form of fertile land where many residents live to grow crops. Besides having positive impacts, there are also negative impacts in the form of natural disasters. Improvement in mitigation of natural disasters is needed to avoid any form of harm and undesired losses. Information on the accuracy of earthquake parameters is an important part of natural disaster mitigation efforts. Hypocenter relocation of earthquakes is a step to improve the accuracy of earthquake parameter information. The relocation of hypocenters earthquake is performed using the Coupled Velocity-Hypocenter method. The research area is Gede volcano which is included as type A active volcanoes. The data were processed using GAD and VELEST 3.3 software resulted in epicenters that were spread around Gede and Pangrango volcanoes. The hypocentre were distributed between -2.5 ‒ 5.2 km depths based on GAD calculated. After relocation using VELEST 3.3, they were distributed between 1.0 ‒ 10.5 km depth. The calculated. The calculated magnitudes of volcanic earthquakes occurred in December 2017 vary between 0.6 to 2.7. the difference between the initial and final velocity models is small. After station correction step, the velocity profiles beneath the most of station is indicated as sedimentary layers, and beneath of the peak station, it is indicated as instrusive rocks.

Keywords
Volcano, hypocenter, epicenter, method, GAD, correction, station, and Coupled Velocity-Hypocenter

Topic
Earth and Planetary Sciences

Link: https://ifory.id/abstract/jBhRFybmcgw7

Corresponding Author
Anom Wahyu Asmorojati

Institutions
Universitas Ahmad Dahlan

Abstract
One characteristic of state law in Indonesia is the effectiveness of the administrative court, particularly the State Administrative Court (PTUN-Peradilan Tata Usaha Negara). However, the establishment, which was officially issued in Law number 5 of 1986, was brought about in 1991. It means that state administrative court was applied 46 years after Indonesia declared to be a state law. The research aims to know the urgency of State the establishment of State Administrative Law from the state lawpoint of view. The studies applied the normative juridical method by analyzing the effective regulations to answer the research in question. The fact shows that it is an urge to establish state administrative court in Indonesia. It should have been carried out since the declaration of independence in 1945. The delay indicates that the government sees it as unnecessary to set up a state law. it is required to prevent the violation of the rights of Indonesian people by those holding the authority

Keywords
Urgency, State Administrative Law, State Law

Topic
Administratif Law

Link: https://ifory.id/abstract/ACYBUbdHu2j6

Corresponding Author
Dieno Diba

Institutions
Physics Department, Bandung Institute of Technology, Bandung, Indonesia

Abstract
Papandayan Volcano is an active volcano located near Garut Regency, West Java, Indonesia. Magnetotelluric (MT) data acquisition was carried out in the Crater Mas area in 2009 with a total of 13 measurement points. This data acquisition was performed using a remote reference method to obtain better data quality by reducing measurement noise. The geomagnetic data acquisition was carried out in January 2019 in the crater area using a set of G-856AX Memory MagTM Proton Precision Magnetometer (PPM) with a total of 259 points. The result of MT modeling shows that the structure could be divided horizontally into two layers, namely the conductive layer at a depth up to 1km and the resistive layer at a depth of more than 1km from the surface. Conductive layer located near the surface may be interpreted as the presence of water or clay mineral. The two-dimensional forward modeling of geomagnetic result shows that the rocks with relatively low susceptibility values below the surface causes the anomaly at a depth of 30 to 100 meters. The low susceptibility values of the rocks might have been caused by thermal demagnetization due to high temperatures.

Keywords
Geomagnetic, Magnetotelluric, Resistivity, Papandayan Volcano, Susceptibility

Topic
Earth and Planetary Sciences

Link: https://ifory.id/abstract/F9EYywdVGpCz

Corresponding Author
ELLI RUSLINA

Institutions
a) Pasundan University
Jalan Lengkong Besar No 68, Bandung, West Java, Indonesia
*elli.ruslina[at]unpas.ac.id
b) Faculty of Law

Abstract
The imperative of economic democracy mandated by the constitution through Article 33 of the 1945 Constitution, the reality is not a legal foundations to economic activities appreciation, but even shifts to a free-market economy (laissez-faire). This is confirmed in the constitution "permanent position" of Article 33 of the 1945 Constitution which relies on the notion of "mutualim and brotherhood" and Article II of the Transitional Rules of the 1945 Constitution which are temporary. Regulations that are still valid based on transitional provisions in temporary positions should be replaced by Article 33 of the 1945 Constitution, because this article is a manifestation of Indonesian Economic Nationalism, which is the determination of independence to replace the colonial principle (individual principle) into the national principle. The retention of the individual principle is a legal reason and at the same time a legal source that is easily dictated by economic forces from outside based on individual principles. The aim of this paper is 1) to analyze how the understanding of cooperative principles (cooperation based on mutualism) is manifested as the legal basis on the thought of economic democracy, 2) To analyze how the implementation of Article 33 of the 1945 Constitution into Indonesian economic law tends to lead to free competition. The approach used is normative juridical and descriptive analysis type. The conclusions of economic democracy are contained in the Explanation of Article 33 of the 1945 Constitution; and cooperative principles based on mutualism are not legal fundamental for economic democracy.

Keywords
Cooperative, Cooperation, Kinship, Democracy, Economy

Topic
Constitutional Law

Link: https://ifory.id/abstract/yrujWPR8GdpA

Corresponding Author
Rizqi Fadli

Institutions
Institut Teknologi Bandung

Abstract
In this paper we consider a class of black holes in Einstein-Skyrme theory in even dimensional theories with negative cosmological constant Λ turned on. In addition, the Skyrme scalar field is chiral admitting a complex unitary group SU(2). We take some assumptions as follows. First, we simplify the spacetime to be conformal to a product space ( mathcal{M}^4 × mathcal{N}^{N−4} ) where (mathcal{M}^4) and ( mathcal{N}^{N−4} ) are a four dimensional spacetime and a compact Einstein ((N − 4))-dimensional submanifold with (N ≥ 4), respectively. Second, the representation of the group SU(2) is taken to be fundamental which means that we can use the (2 × 2) Pauli matrices in the theory. Third, the Skyrme field is static which depends only on the radial coordinate r. Then, we derive the Einstein field equation and the scalar equation of motions related to these setups. Our analysis shows that near boundaries, namely near horizon and around the asymptotic region, the geometries are of constant scalar curvature. To be precise, the near horizon geometry is a product space, whereas the geometry in the asymptotic limit is Einstein with negative cosmological constant. Finally, we perform Lipshitz localization method to show the local existence of solutions, and then, using the energy functional we show that finite energy solutions could exist.

Keywords
Einstein-Skyrme Model, Black Hole, Chiral SU(2) Scalar Field

Topic
Theoretical High Energy Physics

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

Corresponding Author
Muhammad Nur

Institutions
Universitas Ahmad Dahlan

Abstract
The results of a survey issued by Junior Doctor Network (JDN) Indonesia on August 1-30 2018 stated that as many as 26.24 percents of doctors in main workplaces in Indonesia were still under salaries of under IDR 3 million per month. Even from the same data, there was 8.89 percent of doctors still underpaid 1.5 million per month. Low income for doctors can increase the risk of danger. The government must understand that low salaries cause doctors to work a lot of shifts over a long period to fulfill their needs and families. Research says that working continuously for doctors increases the risk of malpractice and endangers patients. Doctors have pressure from family and environment to get a decent income, so this opens up opportunities for drug companies for conspiring with these doctors to increase the number of drug sales. Low salaries also make doctors apathetic about their work, and it is difficult to empathize with patients and not provide the best service for them. This research then analyzes the weakness of salary regulation for a doctor in Indonesia. The results of this study indicate that one of the causes of these problems is the absence of standards set by the government regarding salaries for the medical profession in Indonesia. Even though in several countries in ASEAN, standardization of wages for doctors has been regulated for quite a long time. The author uses a normative juridical research method by examining library materials or other secondary materials. The author uses the literature study. The tools used are documents in the form of primary, secondary, and non-legal materials. The data obtained were analyzed qualitatively, then presented descriptively.

Keywords
Doctor, salary, regulation, analysis

Topic
Private Law

Link: https://ifory.id/abstract/4zNHkJRFBpKg

Corresponding Author
Prian Jaya

Institutions
Division of Theoretical High Energy Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung

Abstract
Black hole is an object with a strong gravitational interaction where classically no particles even light can escape from it. The spacetime of a black hole is described by a metric satisfying the Einsteins equation under the general relativity. A simple solution of the Einsteins equation for a black hole system yields inevitable singularities at $r=0$ and $r=2M$ on the spacetime. Such singularities are difficult to explain through physics laws. A metric function, denoted by $f(r)$, was introduced to generalize some well-known solutions such as the Schwarzschild and Reissner-Nordstr"om metrics, which leads to other possible solutions, including regular black holes. The Reissner-Nordstr"om is a charged black hole where its potential leads to a metric function depending only on radius $r$. Regarding this concept, we propose a black hole system with magnetic charge whose magnitude and direction resemble Earths magnetic field. Thus, it is necessary to extend the metric function to $f(r, heta)$, since we use a model of the Earths magnetic field where the magnetic potential depends on the polar angle $ heta$. We present a search for this new type of regular black holes and there might be possibility to generalize to a class of black holes with a metric function $f(r, heta)$.

Keywords
Black Hole; Nonlinear Electromagnetics; Reissner-Nordstr"o; Singularity

Topic
Theoretical High Energy Physics

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

Corresponding Author
Deslaely Putranti

Institutions
Faculty of Law, Universitas Ahmad Dahlan

Abstract
Kotagede Silver is a handicraft product that has a long history regarding the production process and its characteristics. After the monetary crisis that hit Indonesia in 1997, Kotagede Silver experienced quite serious problems related to its raw materials and marketing. Moreover, the younger generation nowadays is not interested in continuing the business of the silver handicraft industry. Therefore, Kotagede silver industry is under the threat of extinction. This study will analyze production systems, distribution systems, and markets for Kotagede Silver products. The objective of this study is to determine whether Kotagede Silver is feasible to be registered as Geographical Indication products or not by looking at the scenario of the Book Requirements for Kotagede Silver. Geographical Indication as a tool to protect local products based on local know-how is recommended for regional development as long as the products are related to specific communities that related to natural resource management and cultural preservation needed to make a product known thanks to its quality. This research is qualitative research with the juridical-empirical approach. The result shows that Kotagede Silver is feasible to be registered as a Geographical Indication by reviewing the scenario of the Book of Requirements. Moreover, with the decreasing number of the silver artisan, the registration of Geographical Indication for Kotagede Silver seems promising for the cultural preservation as well as to continue the long tradition of local handicraft industry in Yogyakarta.

Keywords
Geographical Indication, Intellectual Property Law, Handicraft Product

Topic
Private Law

Link: https://ifory.id/abstract/7E92Nzg6GWPM

Corresponding Author
Deriyan Senjaya

Institutions
a) Theoretical Physics Laboratory
Department of Physics
Bandung Institute of Technology
Jalan Ganesha No.10, Bandung 40132, Indonesia
*deriyan191293[at]gmail.com

Abstract
Dirac-Weyl Semimetal (DWS) is a Dirac material with exotic properties that appear due to the presence of Massless Dirac Fermion (MDF). If the MDF is confined by certain potential, for example 1D coulomb potential, the exotic properties of DWS will increase. The enhancement also occurs simultaneously with a slow manipulation on coulomb potential, compared to MDF motion with parameter alpha_{t}. This enhancement particularly happens on its electrical transport properties because the MDF adiabatic dynamic is related to current. The enhancement gives an opportunity to DWS to be applied as FET, but the presence of adiabatic dynamic automatically generates slowly current enhancement. Therefore, we need to formulate auxiliary potential to accelerate the current enhancement. The auxiliary potential formulation was done by fast-forward method. The effect of these formulation was tested on graphene as DWS example with length L = (5 x 10-6; 2), then the current enhancement was examined with electrical conductance. Based on our result, manipulation of coulomb potential in 1 second increases the graphene conductance 1.153 and 1.057 times, respectively. The presence of conductance shift clearly indicates the current enhancement acceleration when an auxiliary potential is applied within the manipulation.

Keywords
Dirac-Weyl Semimetal; 1D Coulomb Potential; Adiabatic; Field Effect Transistor; Fast-Forward Method; Electrical Conductance

Topic
Condensed Matter Physics

Link: https://ifory.id/abstract/rXKwJ6DMb3cy

Corresponding Author
Annisa Rahman

Institutions
1) Physics Department
Bandung Institute of Technology
Jalan Ganesha No. 10, Bandung, Indonesia 40132
a) ann.rahman1412[at]gmail.com
b) inge[at]fi.itb.ac.id

Abstract
This study aimed to investigate the solidification process of 23% tetra-n-butyl ammonium bromide (TBAB) aqueous solution due to the application of DC voltage. TBAB hydrate is an example of thermal energy storage system with phase change temperature around 5–10 oC. The voltage was applied continuously through commonly sold copper electrodes which was inserted into the sample. The diameter of electrodes were 1 mm and the gap were approximately 0.5 mm. The value of the applied voltage in the range of 15 to 30 V was varied as the experimental parameter. The overall experiments were repeated for two times to ensure the data repeatability. The experimental results showed that the TBAB hydrate will not formed until a minimum value for 20 V voltage was applied. The increase of the voltage applied led to higher solidification temperature and reduction of the supercooling degree.

Keywords
Tetra-n-butyl ammonium bromide (TBAB); Solidification; DC Voltage; Solidification Temperature; Supercooling Degree

Topic
Condensed Matter Physics

Link: https://ifory.id/abstract/rkxUvd6tc9fH

Corresponding Author
Suhartoko Suhartoko

Institutions
Telkom University, Bandung, Indonesia

Abstract
The era of digitalization which is very rapid raises, challenges for players in the telecommunications industry to meet customer needs by providing services with high speed and broad reach. The telecommunications industry in the countries of East and Southeast Asia still shows a positive growth trend in terms of average income of 2.3% and growth in the number of customers an average of 4.1% per year. But this was not matched by EBITDA margins which actually declined at a rate of -1.12% during 2013-2017. This research was conducted to determine, analyze and compare the efficiency values of 25 telecommunications companies in East and Southeast Asia which were included in the list of the most 300 valuable brands in 2018 in the 2013-2017 observation period. The method used to calculate the value of company efficiency in this study is Data Envelopment Analysis (DEA). By determining the input output variables based on previous studies, then the value of the variables obtained from the foreign financial statements of each company is processed and then processed in the MaxDEA-7 software to get the value of company efficiency. To find out the influence and relationship between input output variables and efficiency values, a correlation analysis is carried out to produce the correlation coefficient between them. The results of the efficiency value and the value of the correlation coefficient are then compared between each company and per each group of countries, to find out which companies and countries are the most efficient and the variables that most strongly influence the value of efficiency. From the analysis of the results of the study it can be concluded that the telecommunications company PT. NTT (Japan) is a company that has the highest efficiency value and is most influenced by capex, revenue and subscriber variables, while PT. FarEasTone (Taiwan) has the lowest efficiency value and is most contributed by capex and subscriber variables. And of the 10 countries in East and Southeast Asia studied in the past 5 years in a row, on average telecommunications companies in Japan have the highest efficiency values with the most influential variables being capex, revenue and subscriber, and on average Singapore has the lowest efficiency value with the most influential variables being opex, personal expense and total assets.

Keywords
Telecommunication Industry, East and Southeast Asia, Efficiency, Data Envelopment Analysis (DEA)

Topic
Finance and Risk Management

Link: https://ifory.id/abstract/kv6brPuAK42e

Corresponding Author
Delladari Mayefis

Institutions
STIKes Mitra Bunda Persada Batam

Abstract
Luka bakar merupakan kerusakan pada jaringan kulit yang disebabkan oleh benda panas, sengatan listrik, bahan kima ataupun radiasi. Herba pegagan dan lidah buaya merupakan tanaman yang dikenal mempunyai khasiat menyembuhkan luka bakar. Pegagan memiliki kandungan komponen bioaktif triterpenoid yaitu asiaticoside, madecassocide dan madeccasic acid yang dapat menyembuhkan luka bakar dan juga memperbaiki sel-sel kulit mati. Lidah buaya mengandung saponin, senyawa antrakuinon, vitamin C dan vitamin E sebagai antioksidan. Penelitian ini dilakukan untuk mengetahui pengaruh pemberian gel kombinasi ekstrak herba pegagan dan lidah buaya terhadap penyembuhan luka bakar. Penelitian ini menggunakan metode ekperimental pada 25 ekor mencit putih jantan yang dibagi menjadi 5 kelompok. Kelompok kontrol positif diberikan Bioplacenton, kelompok kontrol negatif diberikan gel tanpa ekstrak dan 3 kelompok uji yang lain diberikan masing-masing gel kombinasi ekstrak herba pegagan dan lidah buaya konsentrasi 5%, 10% dan 15%. Pemberian gel dilakukan sebanyak dua kali sehari hingga luka bakar pada punggung mencit sembuh. Pengamatan meliputi rata-rata diameter luka bakar perhari dan persentase penyembuhannya. Hasil penyembuhan paling cepat ditunjukkan pada kelompok yang diberikan gel kombinasi konsentrasi 15% yaitu dalam waktu 10 hari. Hasil analisis statistik menggunakan uji ANOVA satu arah menunjukkan terdapat perbedaan signifikan antara rata-rata nilai persentase antar kelompok.

Keywords
Pegagan, Lidah Buaya, luka bakar

Topic
Teknologi Formulasi Sediaan Bahan Alam

Link: https://ifory.id/abstract/KUXrpnR49x7M

Corresponding Author
Indri Liani Sartika

Institutions
Bandung Institute of Technology

Abstract
Induced polarization (IP) method is part of the geoelectric methods that is often used in metal exploration. Data interpretation from induced polarization survey requires a fast and efficient forward modeling algorithm. In this study, a forward modeling of induced polarization scheme for 2D environment was developed. The finite element method (FEM) was used for calculating the IP responses for a 2D subsurface resistivity model. The FEM was implemented in the scheme by using the Galerkin approach. The modeling scenarios were divided into two: the first is a case where the subsurface was a homogeneous resistivity whereas the values of injected current were varied. The second case is where the subsurface posses two resistivity layers with a constant value at the injected current. The result show that at a constant current, the electric potential differences are proportional to the resistivity value. Whereas for the two-layers case, the increase in the potential difference is proportional to the increase in resistivity and that current penetrates deeper in the resistive layer.

Keywords
Induced Polarization, Finite Element Method, Earth Science

Topic
Complex system modelling

Link: https://ifory.id/abstract/Q7wEXDCJe9Km

Corresponding Author
Zulfikar Muhammad

Institutions
Sekolah Tinggi Ilmu Kesehatan Kepanjen

Abstract
Background. Indonesia is a country located at the confluence of three active plates of the earth which cause earthquake pathways and active volcanoes. Sumberrejo Village is located on one of the legs of an active volcano, namely Semeru Mountain which has the potential to be affected by the volcanic eruption. The effort that can be done to reduce the impact of the disaster threat is to form the Desa Tangguh Bencana (Destana). Disaster resilient village is an activity that aims to increase the capacity of the community, namely increasing knowledge and skills in the face of the threat of disaster. The aim of the study was to find out whether disaster resilient village socialization using the SGD (Small Group Discussions) method could affect the resilience of the community in dealing with disaster risk. Method. This study uses a quantitative method with a pre-experimental design, and with a one group pretest-posttest approach. The group was pretested before the treatment, then after being treated, the group was posttest. The instrument in this study used a community resilience questionnaire with 51 question items. The number of samples in this study were 35 respondents, using cluster sampling techniques. The data obtained were analyzed using the t test with significance ρ <0.05. Results. The results of this study indicate that the average value of community resilience prior to socialization was 103.20, while the average value of community resilience after socialization was 163.23. The significance value for paired samples correlations is 0.09, which means there is no significant relationship between community resilience before and after socialization, while the paired sample test significance value is 0.00, which means that there is a significant effect between community resilience before and after socialization. Conclusion. This study can be concluded that there was an increase in the resilience of the people of Sumberrejo Poncokusumo Village after the dissemination of resilient villages using the SGD (Small Group Discussions) method.

Keywords
Disaster Disaster Village, Small Group Discussions, Community Resilience, Disasters

Topic
Community Health

Link: https://ifory.id/abstract/GRt8ukezEyDT

Corresponding Author
Radhinka Bagaskara

Institutions
a) Master Program in Computational Science, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Bandung 40132, Indonesia
b) Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Bandung 40132, Indonesia
*radhinka[at]students.itb.ac.id

Abstract
Molecular dynamics is a method to simulate movements of atoms or particles in a system. The simulation is computationally complex and the performance heavily depends with the computer. As such, a high performance computation system is necessary to achieve the optimal efficiency. One of the solutions is by using parallel computation to speed up the simulation running time. In this research, we use CUDA API developed by Nvidia, to create a parallel molecular dynamics simulation with the help of Nvidias own GPUs. The system used in this simulation is the noble gas particles, i.e. Helium, Neon, Argon, Krypton, Xenon, and Radon. Interactions between particles is modeled by using Lennard-Jones potential and the equations of motion which are integrated with velocity Verlet method. The system is then benchmarked by making comparisons of the execution time between the serial and parallel simulation on CUDA cores. The running time of the parallel simulation is faster than the serial one.

Keywords
Molecular Dynamics, Noble Gas, Parallel Computation, CUDA

Topic
High Performance Computing

Link: https://ifory.id/abstract/DjM3fvKbAJzT

Corresponding Author
Maju Sumanto

Institutions
Bandung Institute of Technology (ITB) - Computational Science

Abstract
Machine Learning is an artificial intelligence system, where the system has the ability to learn automatically from experience without being explicitly programmed. The learning process from Machine Learning starts from observing the data and then looking at the pattern of the data. The main purpose of this process is to make computers learn automatically. In this study, we used machine learning to predict molecular atomization energy. We use two methods namely Neural Network and Extreme Gradient Boosting. Both methods have several parameters that must be adjusted so the predicted value of the atomization energy of the molecule has the lowest possible error. We are trying to find the right parameter values for both methods. For the neural network method, it is quite difficult to find the right parameter value because it takes a long time to train the model of the neural network to find out whether the model is good or bad, while for the Extreme Gradient Boosting method the time needed to train the model is shorter, so it is quite easy to find the right parameter values for the model. This study also looked at the effects of the modification on the dataset with the output transformation of normalization and standardization then removing molecules containing Br atoms and changing the entry in the Coulomb matrix to 0 if the distance between atoms in the molecule exceeds 2 angstrom.

Keywords
Machine Learning, Neural Network, Extreme Gradient Boosting, Atomization Energy, Molecule.

Topic
Artificial Intelligent and soft computing

Link: https://ifory.id/abstract/ymfUR6MdYA4x