Indonesia Conference Directory

Corresponding Author
Teguh Budi Prayitno

Institutions
Universitas Negeri Jakarta

Abstract
We have calculated the energy of static solitary wave solutions of the one-dimensional Gross-Pitaevskii equation with time-dependent parabolic trap, time dependent scattering wave length of s-wave, and time-dependent external potential describing gain or loss term. Some written solutions of the equation were proposed by Atre et al. [Phys. Rev. E 73 (2006) 056611] which two of them based on the experimental results presented by Strecker et al. [Nature (London) 417 (2002) 150]. The solutions satisfy the condition of solitary wave solution since they are localized over all space. By this argument, the energies are obtained by integrating the Hamiltonian density over all space formulated in the Classical Field Theory. To calculate the energies, we construct the appropriate Lagrangian density representing the equation by initially writing the ansatz Lagrangian density and substituting into Euler-Lagrange equation. We find that two of them have the same energies and the other one should be mathematically have the pure imaginary function describing gain-loss term in order to keep energy real.

Keywords
Solitary waves, Bose-Einstein Condensation, Gross-Pitaevskii

Topic
Physics

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

Corresponding Author
Teguh Budi Prayitno

Institutions
Universitas Negeri Jakarta

Abstract
By using the one-dimensional canonical partition function, we modeled an ideal gas-like form of a set of Bose-Einstein condensates confined by a three-dimensional anisotropic parabolic trap. The model itself was constructed by taking the eigenenergies of the one-dimensional Gross-Pitaevskii equation in the longitudinal direction and enabling the harmonic volume as the inverse cube of average geometric trapping frequency to substitute the available volume. In this paper, we showed that the condensates form an ideal gas represented by its equation of state and have similar mature to Einstein solid-like model with corrections both in the low and high temperatures in the internal energy formulations.

Keywords
Bose-Einstein condensation, Gross-Pitaevskii equation, quantum oscillator

Topic
Physics

Link: https://ifory.id/abstract/EhJ7nAUp9GNQ

Corresponding Author
Mohamad Agus Salim

Institutions
(1) Biology Department, Science and Technology Faculty of UIN Sunan Gunung Djati Bandung
(2) Agrotechnology Department, Science and Technology Faculty of UIN Sunan Gunung Djati Bandung
(3) Mathematic Education, Universitas Pendidikan Indonesia

Abstract
Microalgae of D. salina possesses multiple pharmacological properties which are mainly attributed to the active compounds such as polyphenol, chlorophyll and B-carotene. However, the utilization of D. salina as a neuroprotective agent in Parkinsons disease is still questionable. In present study, we observed the potential neuromodulatory effects of D. salina extract against the toxicity exposed to paraquat in fruit fly Drosophila melanogaster. Male wild-type fruit flies were concomitantly induced by paraquat (3.5mM) and D. salina methanolic extract (200 ug/mL) in their diet during 4 days of observation. Paraquat fed fruit flies had exhibited a higher incidence mortality and the worst influence on locomotor phenotypes (negative geotaxis) when compared to the control. D. salina extract treatment showed protection ability against these deleterious effects of paraquat. Though, paraquat exposure caused a marked increase in malondialdehide (MDA) content as indicating increase lipid peroxidation process in brains of fruit flies. Meanwhile, paraquat toxicity was also related to a significant decrease on dopamine level in head of fruit flies, which were attenuated by D. salina extract treatment. Our results conclude that D. salina extract significantly reduced the toxicity of paraquat compounds exposed to fruit flies and proved the usefulness of this model as a potential therapeutic strategy for symptoms that appear in Parkinsons disease.

Keywords
Dunaliella salina ; Fruit fly ; Paraquat ; Parkinson

Topic
Biology

Link: https://ifory.id/abstract/DhdG9A4jxtJV

Corresponding Author
RINI SETIATI

Institutions
1Petroleum Engineering, FTKE, Universitas Trisakti, Jakarta, Indonesia
2 Petroleum Engineering, FTTM, Institut Teknologi Bandung, Bandung, Indonesia
3,4 Chemistry, FMIPA, Institut Teknologi Bandung, Bandung, Indonesia

Abstract
Green chemical is the designing of products and processes that minimize the use and generation of hazardous substances. Synthesis of Sodium Lignosulfonate (SLS) Surfactant can be processed from bagasse, waste of sugar cane. The aim of this study is to show that sodium lignosulfonate surfactant (SLS) can be made from bagasse using the Microwave-Assisted Organic Synthesis (MAOS) with the concept of green chemistry. Bagasse processing becomes SLS with hydrolysis and sulfonation process using microwave radiation. The process is closed system, for 1 hour, with a microwave power of 300 watts at 80oC. The process is using Microwave-Assisted Organic Synthesis (MAOS) which is equipped with chemical flask and condenser. Reagents are used fairly in small concentrations, 2% NaOH and 0.1 M sodium bisulfite. The result of synthesized SLS from bagasse is brown powder. The synthesized SLS product using Microwave-Assisted Organic Synthesis has been tested with Fourier Transform Infra Red (FTIR), consisting of Alkene, Sulfonate, Carboxylic Acids and Ester. This composition is similar to the composition of the commercial SLS standard which petroleum based, so it qualifies for surfactant injection in the EOR process. Green Chemical concepts can be applied in the Synthesis of Sodium Lignosulfonate Surfactant using Microwave Assisted Organic Synthesis.

Keywords
bagasse, green chemical, microwave, synthesized surfactant

Topic
Chemistry

Link: https://ifory.id/abstract/BTe2EHvjGCzy

Corresponding Author
Saroso Saroso

Institutions
Universitas Negeri Malang

Abstract
The aim of this study are, to determine the influence of achievement motivation, the inspiration of the learning model, service satisfaction, career expectations, to the achievement of learning and self-confidence graduate Polytechnic of Road Transport Safety. The sample in this research consist of 308 students of Polytechnic of Road Transport Safety. The data obtained from questionnaires distributed to the respondents. After the data collected continued with the validity and reliability test by using the formula Confirmatory Factors Index then the data were analyzed by using SEM technique. The results showed in general, the conclusion of this research there is influence of achievement motivation, inspiration from learning model, service satisfaction, and career expectation toward learning achievement and self-confidence of graduate of Polytechnic of Road Transport Safety

Keywords
achievement motivation, the inspiration of the learning model, service satisfaction, career expectation, achievement of learning and self-confidence of graduates

Topic
Management Science

Link: https://ifory.id/abstract/PEYGMB6ZVyf2

Corresponding Author
beki subaeki

Institutions
a) Department of Informatic Engineering, Sunan Gunung Djati State Islamic University Bandung, Indonesia
* bekisubaeki[at]uinsgd.ac.id
b) Department of Information Communication Technologhy AEU, Malaysia
aedah.abdrahman[at]aeu.edu.my
c) Department of Information System, Syarif Hidayatullah State Islamic University Jakarta, Indonesia
syopian[at]uinjkt.ac.id
d) Department of Informatic Engineering, Sunan Gunung Djati State Islamic University Bandung, Indonesia
cecep.uinsgd[at]ac.id

Abstract
Researchers have done research on information systems before; because, the breadth of studies about IS. [1], [2] is an example of a study on how to measure Information System Success by testing instrument factors. Some researchers can produce different judgments regarding the success of implementation of IS; this is because the first definition of success of each researcher is changed, the two perspectives on success assessment, the three variables used, the four implementations in different environments. Several models can be used as references to assess the success of IS, Delone and McLean are examples that are widely used as references, which use six variables in measuring IS implementation. From the model used, later there will be a gap in determining the model, and this becomes an opportunity for the development of the model as follows. The development of models to measure information system success can be done by adoption, adaptation, and combination. This is legitimately valid as long as the development of the model is accompanied by supporting theories. The purpose of literature review can provide an overview of related to the method of previous researchers. Then it can be used as a framework for solving problems.

Keywords
success model, delone and mclean, is success, information system.

Topic
Computer Science

Link: https://ifory.id/abstract/jXA9MbfVkepB

Corresponding Author
Asep Saepuloh

Institutions
Economics Faculty, Universitas Garut, Jl. Raya Samarang, 52A, Garut, Indonesia. Asepsaepuloh[at]uniga.ac.id

Abstract
Digital technology and social media have improved the connectivity and colaboration between online store and customers in a transaction online shop. The purpose of this paper is to investigate the impact of social media marketing on brand loyalty the usage of hashtagisf store instagram online groups online in Indonesia . The research used method is descriptive and associative, using the sample of 96 followers of intsagram page, data were collected and analyzed using simple linier regression analysis was recruited on population. Analysis based on theorical framework used the classical assumption test analysis and simple linier regression analysis. Instrument indicator validity and reliability testing corelation value more tahan 0,30 so that all the indicators used in this valid. The result of the research showed that partially social media marketing activities positively affect on brand loyatly in hastagisf store.

Keywords
social media marketing and brand loyalty

Topic
Management Science

Link: https://ifory.id/abstract/wq6padND7Wgf

Corresponding Author
Waidah Ismail

Institutions
1Faculty of Science and Technology, University Sains Islam Malaysia, Malaysia
2Center for Interdisciplinary Research on Complex Systems, Northeastern University, Boston, MA, USA
3PERKESO Rehabilitation Centre, Malacca, Malaysia
3Center for Holistic Intelligence, Institut Sains Islam, Universiti Sains Islam Malaysia, Malaysia

Abstract
This paper highlighted prediction of difficulty in exergames in Rehabilitation Patients. The case study uses 19 rehabilitation patients with lower limb disability. The data set that used are from MIRA Application which the games based on Kinect-based Rehabilitation Gaming System (RGS). In the each of MIRA exergames consists of three difficulty modes which are easy, medium and hard. Currently, in exergames to move the difficulty level of games determined by the physiotherapy based on the improvement of the patents. But in this paper, it will suggest the difficulty level of games based on the history of the patients. The methodology that used is a K-Mean Clustering in finding the benchmarks of the individual patients. In producing the weight of the patients in determine difficulty level or exergames.

Keywords
Rehabilitation, Kinect-based rehabilitation game system, machine learning

Topic
Informatic and Information System

Link: https://ifory.id/abstract/BVPgpqzmwb6L

Corresponding Author
Ridwan Setiawan

Institutions
Department of Informatics Engineering
Sekolah Tinggi Teknologi Garut
Jl. Mayor Syamsu No 1. Jayaraga - Garut 44151 Indonesia

Abstract
Indonesia has a potential of 217 Trillion Rupiah zakat income in 2017, but it can only be collected 6 trillion or 0.2%, one of the factors is that Muzaki directly distribute their zakat without going through zakat management institutions so that the government can not record them, to encourage increased management of zakat management institutions requires planning, designing, and building systems that can assist in managing zakat. This research aims to design enterprise architecture systems for zakat management institutions in achieving the collection, management, utilization, and distribution of zakat and sadaqah infaq. The methodology used in this design uses TOGAF ADM by collecting data using observation and interviews with one of the private zakat management institutions. The results of this study are in the form of a system architecture design that can be used as a reference for zakat management institutions along with a prototype of the zakat reporting system.

Keywords
Architecture System; Information System, Zakat Management

Topic
Information Engineering

Link: https://ifory.id/abstract/c4qr8wLTXtkC

Corresponding Author
Yossrizal Ramadhan

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

Abstract
The purpose of this study is to identify the importance of using information technology for security, especially for supervision. The method used in this research is descriptive method, describing the function of using smart phones as a security tool. The results of this study that smart phones can be used as a security tool by using a cellphone camera as a surveillance camera and wireless computer network. This research was carried out with the results of analysis and experiments using previous references and supporting equipment. From the results of this study it can be found that smart phones can be utilized as security systems. Therefore the results of this study can be utilized by various parties or can be used as a reference in the use of technology and information.

Keywords
Information technology, smartphone, cellphone camera, security tool

Topic
Electrical and Computer Engineering

Link: https://ifory.id/abstract/ACjufg3UQyD2

Corresponding Author
Andi Kristanto

Institutions
Universitas Negeri Surabaya

Abstract
The purpose of developing computer learning media is learning problem solving efforts, so that they can improve student learning outcomes. This study uses the ADDIE development model. The trial was carried out in several stages, namely the validation of material experts, media experts, and student trials. Methods of data collection using interviews, questionnaires, and tests. Based on the results of the material expert questionnaire calculation is 90%, the results of the calculation of the media expert questionnaire are 92%. The results of individual trials scored 94.4%, the results of small group trials scored 95%, and the results of large group trials scored 97.5%. Based on the criteria for the media that are developed suitable for use in learning. Data obtained from the t test from the pretest and post test are = 5,730> = 2,039, it can be concluded that computer learning media is effectively used in learning

Keywords
development; media; computer learning

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/t47bnTfz3M6B

Corresponding Author
Ayu Puspitasari

Institutions
a) Departemen Ilmu Pemerintahan, Universitas Komputer Indonesia, Indonesia
b) Departemen Sistem Informasi, Universitas Komputer Indonesia, Indonesia

Abstract
This research was conducted to provide suggestions on a way to monitor road traffic conditions by using data sent from cameras installed at each intersection. The research method used is literature study, observation, system design and system testing. With this method the writer can make an accurate information system regarding traffic monitoring. From the results of the study obtained data such as general conditions of the road, the number of vehicles passing, the average speed of the vehicle, the travel time of the vehicle, the position of congestion and the time of congestion.The creation of a monitoring system is very important because it can provide information about the road conditions clearly. From the current problems, the authors want to make a "Website-Based Vehicle Traffic Monitoring System" which later the system becomes information for road users and the police to monitor traffic.

Keywords
Road Traffict; Information System; Vehicle

Topic
Informatic and Information System

Link: https://ifory.id/abstract/86PDT7ZgFeyz

Corresponding Author
Ridwan Setiawan

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

Abstract
Asset management is the process of recording, data collection, reporting and documentation of assets at a particular time based on existing provisions, good asset management can support operational activities primarily in the maintenance, repair, and procurement of assets for the organization. This research aims to design asset management and accounting information systems for the process of managing asset data and the process of calculating integrated asset depreciation for universities. The methodology used in this research is Scrum which can accommodate changes during the system design process with data collection techniques based on the business process of asset collection at one of the private universities. This research produces a web-based asset accounting management information system prototype that can help asset managers and calculate asset value depreciation.

Keywords
Asset, Information System, Scrum

Topic
Information Engineering

Link: https://ifory.id/abstract/rhYbKNED8jgB

Corresponding Author
Ariya Ariya

Institutions
a) Departemen Teknik dan Komputer, Universitas Komputer Indonesia, Indonesia
b) Departemen Teknik dan Ilmu Komputer, Universitas Komputer Indonesia, Indonesia

Abstract
The purpose of this study is to develop an asset management system by computerizing the system to maintain and maintain company assets. The method used in this research is descriptive method, to describe the process of computerized company asset management systems. The results of this study are the extent to which technology is applied in the companys asset management system and the benefits of implementing a computerized asset management system for the company. This research was conducted to discuss asset transaction systems, automate asset depreciation, and tracking company assets. The results of this study will improve the productivity of the company to be more effective and efficient.

Keywords
Asset Management; Company Asset; Computerizing system

Topic
Entrepreneurship & Technopreneurs

Link: https://ifory.id/abstract/dMbBHRW3P79q

Corresponding Author
Agus Masrukhin

Institutions
a) Character Building Development Center, Information
Systems Department, School of Information Systems,
Bina Nusantara University, Jakarta, Indonesia 11480
*agus[at]binus.ac.id
b) Faculty of Culture, Cultural Studies, Padjadjaran
University Bandung, West Java, Indonesia

Abstract
When the Eid-ul-Ghadir celebration will come, often the media of Islamic organizations respond to each other according to their beliefs. not infrequently this is not separated from the ideological setting and vision of the mission of the Islamic organizations standing. so that the construction of the built reality also tends to follow the perspective of each of the online media organizations. The purpose of the article is to get a mapping of the construction of online media Islamic organizations related to the culture of Eid Ghaidr. The framing analysis that will be used is from Gamson and Modigliani, the research will reveal several media online Islamic organizations, including www.majlismujahidin.com www.ijabi.or.id/, www.annasindonesia.com, and icc-jakarta.com. the results of the study indicate that online media is used as a tool to influence the wider community on what they consider to be true in a vulgar and contradictory way.

Keywords
Framing the Online Islamic Media, Eid ghadir cultture, respond

Topic
Computer Science

Link: https://ifory.id/abstract/BnXfb6KQwk2A

Corresponding Author
Sesilia Candra

Institutions
a) Departemen Teknik Komputer, Universitas Komputer Indonesia, Indonesia
b) Departemen Ilmu Politik dan Sosial, Universitas Komputer Indonesia, Indonesia

Abstract
This research aims to see how the benefits will be generated by becoming a youtuber. This research uses qualitative approaches and descriptive methods with analytical techniques and also literature studies to explain how there are advantages from becoming a youtuber. The results of this study are so many advantages gained from becoming a youtuber, for example is adsense payments, sponsorship, brand ambassadors and also corporate collaboration. Because with a thousands of suscribers and viewers will make lots of company interested in collaborating and adsense come. That is why this research expected to motivate millenials to see business opportunies that can be generated from being a youtuber.

Keywords
Youtuber; Business Opportunity; Subscriber

Topic
Entrepreneurship & Technopreneurs

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

Corresponding Author
Adam Malik

Institutions
Program Studi Pendidikan Fisika UIN Sunan Gunung Djati Bandung

Abstract
This research aims to develop methods of measuring the coefficient of viscosity using viscosimeter are analyzed using Newtons law of 1. The viscosimeter stormer came from the simple equipment modifications in the form of a hollow cylinder, laver, a pulley, a ruler, a stopwatch, burdens, taps, boards, iron rods, and rope. The trial results do indicate fairly accurate results with the reference. Furthermore, the equipment used, reaching a level of precision that is good at the moment in the trial to the school community. According to the trial results obtained the relationship between viscosity coefficients against time is inversely proportional. The resulting coefficient of viscosity is greater when the mass of the given object is getting bigger.

Keywords
Viscosimeter, Coefficient of Viscosity

Topic
Physics

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

Corresponding Author
Silma Sylfiani Nugraha

Institutions
a) Departemen Teknik Industri, Universitas Komputer Indonesia, Indonesia
b) Departemen Teknik dan Ilmu Komputer, Universitas Komputer Indonesia, Indonesia

Abstract
The purpose of the study are to assess to identify how markets better for you products how to make handicrafts by making use of the e-commerce .In this research the use writers a method of descriptive .The result of this research is used to view how easy it is to the effect of these pay e-commerce against markets better for you products how to make handicrafts and the impact of the in order to increase the economy of the member of their community .With relic of that this title the author of the one who reads take hoped but we took away ascertain the extent to which impact of technology on products net profit hike were sales traditional.

Keywords
Handicracft; E-Commerce; Net Profit

Topic
Entrepreneurship & Technopreneurs

Link: https://ifory.id/abstract/KcyRZEdCkaP4

Corresponding Author
Nur Lukman

Institutions
a,c,d,e. Department of Informatics, UIN Sunan Gunung Djati Bandung,
b. Department of Information, System Sangga Buana YPKP University Bandung

Abstract
The National Examination in 2018 is no longer the only determinant of student graduation from their school, however the score of the national examination in 2018 has decreased from average value of 55.51 to 52.96. One of the reasons is that students found difficulties to predict the questions that probably appeared on the exam sheet. This research aimed to help students predict the questions that probably appeared, so that the average value hopefully will be increased. The prediction of the questions that probably appeared on the exam had been done by processing data of the questions used for national examinations several years ago using C 4.5 Algorithm. C 4.5 Algorithm is a Data Mining technique that can classify predictive questions and it is able to form a prediction of questions on the exam. The result showed that the prediction of questions that probably appeared on exams by using Algorithm C 4.5 had good performance and its accuracy is 70 %

Keywords
National Examination; Data Mining; C 4.5 Algorithm

Topic
Computer Science

Link: https://ifory.id/abstract/dNJHTqVZaPe7

Corresponding Author
Pahrul Maulana

Institutions
a) Departemen Teknik Sipil, Universitas Komputer Indonesia, Indonesia
b) Departemen Teknik dan Ilmu Komputer, Universitas Komputer Indonesia, Indonesia

Abstract
The purpose of this study is to identify the development of renewable energy technologies in the world, especially Indonesia for the future. The method used in this study is a descriptive method, namely by presenting a complete picture of the situation associated with seeing the developments that have been applied. The result of this study is to find out the extent of developments in the clean energy and renewable energy sectors, as well as the importance of the environment and natural balance in aspects. This research was conducted by discussing the development of technology that is applied as a producer of clean energy that does not have a bad impact on the surrounding environment.

Keywords
renewable technology; Environment; Clean Energy

Topic
Electrical and Computer Engineering

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

Corresponding Author
Adam Malik

Institutions
Program Studi Pendidikan Fisika UIN Sunan Gunung Djati Bandung

Abstract
This research aims to build physics tools of measurement of river flow is current. The tool was developed with the balance spring as a means of collecting the data. data measurement results then analyzed mathematically. It is designed using chloride polyvinyl (PVC) which is waterproof. The result of the test tool shows the average error value of 0.3342% and the value of the standard deviation of 0.1893. So it can be stated that RAV Current Meter has a level of accuracy and the level of accuracy that is high enough. This equipment still needs to be optimized by performing test audiences to see the ease of the user. In addition, the size of the adjustment to the attention of the research further.

Keywords
Water Currents, Spring Balance

Topic
Physics

Link: https://ifory.id/abstract/qmx4KabdGpFu

Corresponding Author
Agus Masrukhin

Institutions
a)Character Building Development Center, Industrial Engineering Department, Faculty of Engineering, Bina Nusantara University, Jakarta, Indonesia 11480
amroe[at]binus.ac.id

b)Character Building Development Center, Information Systems Department, School of Information Systems, Bina Nusantara University, Jakarta, Indonesia 11480
*agus[at]binus.ac.id

Abstract
The improvement of learning modules Quality, learning methods, and lecturers contribute significantly to student learning outcomes. This study aims to identify the most significant factors related to module quality, learning methods, and lecturers to improve student learning outcomes and how much they influence. Our essay used combination methods (Mixed Methods) qualitative and quantitative with cross sectional approach with respondents and resource persons from lecturers and students of Bina Nusantara University 143 people from various study programs. Data analysis used model multiple regression SPSS 16.0. Overall the findings show the effect of learning system innovation and the development of learning modules, learning methods and quality of lecturers on student learning outcomes. We also used the same research tool, to show that the number of students in one class also has an impact on student learning outcomes

Keywords
Quality of Module Courses, Learning Methods, Lecturers, Students, Correlation

Topic
Management Science

Link: https://ifory.id/abstract/W3MHmJgfUDRZ

Corresponding Author
Nurgita Hapsari Dwi Jayaningtyas

Institutions
Fakultas Ilmu Sosial dan Politik, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Surakarta, Indonesia

Abstract
The concept of ESD was born from the need for education to address the growing environmental challenges facing the world. In order to do this, education must change to provide the knowledge, skills, values and attitudes that empower learners to contribute to sustainable development. At the same time, education must be strengthened in all agendas, programmes and activities that promote sustainable development. In short, sustainable development must be integrated into education and education must be integrated into sustainable development. ESD is holistic and transformational education and concerns learning content and outcomes, pedagogy and the learning environment. Through targeted development approaches require lecturers explore popular education theory perspectives to upgrade the quality of teaching. This article aims to examine one of the efforts of higher education to improve the quality of lecturers through exchange programs. The method used is Systematic Literature Review. The results of the study show that the lecturer exchange program can improve the quality of lecturers, it is evident that lecturer exchanges can broaden the knowledge of lecturers about new perspectives in carrying out the teaching and learning process, the benefits of lecturer exchanges will be more detailed in the discussion section of this article.

Keywords
Sustainable Development Goals; Education for Sustainable Development; Exchange Programme

Topic
Education

Link: https://ifory.id/abstract/jyF9DVdB2Kx8

Corresponding Author
Edisah Putra Nainggolan

Institutions
Faculty of Economics and Business, University of Muhammadiyah Sumatera Utara

Abstract
This study aims to examine and analyze the effect of earnings management on firm value and tax avoidance on earnings management relationships with firm value on agricultural companies listed on the Indonesia Stock Exchange. This approach uses a quantitative approach, consisting of two independent variables namely earnings management, and tax avoidance, and the dependent variable is the value of the company. The object of this research is agricultural companies listed on the Indonesia Stock Exchange (IDX) during the period 2013-2017. The sample used was 14 agricultural companies listed on the IDX. Testing the hypothesis in this study using multiple linear regression Based on the results showed that (1) earnings management affects the value of the company in agricultural companies on the IDX. (2) tax avoidance affects the value of the company in agricultural companies on the IDX

Keywords
Earning Management, Tax Avoiding, Company Value

Topic
Inovasi (Administrasi, Pemerintahan, Pelayanan Publik, Pendidikan, Kebijakan)

Link: https://ifory.id/abstract/MCvQmWA37fV9

Corresponding Author
Yetty Setiyaningsih

Institutions
Magelang City Government

Abstract
The city is a composition between natural landscape elements of origin and manmade landscape elements as a consequence of the way humans adapt the environment to meet their life needs. The town of Magelang is an attractive landscaping city with Mount Tidar as the landmark and slogan of the Million Flower City. The city of Magelang is developing with very limited land. The limitation of urban land refers to the linear form supported by the existence of two rivers, namely Progo and Elo Rivers as administrative boundaries in the East and West. This condition becomes a challenge for land management in Magelang city, especially the management of the landscape. In this study, landscape management is done by looking at landscape elements as "assets". When landscaping is considered an asset, landscaping is both a direct and indirect benefit to the community so that the landscape of a city is no longer neglected but a priority, including in its management budget

Keywords
Urban Landscape Management, City Landscape Asset Management, Assets

Topic
Pembangunan Daerah

Link: https://ifory.id/abstract/xLuqbcHkNd8f

Corresponding Author
Siti Nur Aisyah

Institutions
1 Agrotechnology Program, Faculty of Agriculture, Universitas Sumatera Utara.
2Agrotechnology Program, Universitas Quality, Berastagi

Abstract
Goosegrass (Eleusine indica) is an important weed in rubber plantation. It is getting more difficult to control with glyphosate herbicide of which is normally very common used to control the weed in rubber plantation in North Sumatra. The objective of the study was to evaluate the efficacy of preemergent (indaziflam 150g a.i/ha) and postemergent herbicides (glyphosate 720g a.e./ha, paraquat 400g a.i/ha, ammonium glufosinate 450g a.i./ha) alone or mixtures (glyphosate 720g a.i + metsulfuron methyl 15g a.i./ha, glyphosate 720g a.e./ha + 100g indaziflam a.i/ha) on goosegrass growing on the rubber field along the rubber row. Apart from those treatments there were plots cleared by scrapping the soil surface and plot without treatment. The results showed that indaziflam at 150g/ha and 720 g a.e glyphosate /ha + 100g indaziflam/ha) and manually only cleared controlled the goosegrass effectively followed by 450 g a.i ammonium glufosinate /ha whereas paraquat at 400g.a.i/ha and glyphosate at 720 g a.e/ha either alone or mixture with metsulfuron methyl at 15 g a.i/ha did not control goosegrass satisfactorily

Keywords
goosegrass, Eleusine indica, herbicide, preemergent herbicide, postemergent herbicide

Topic
International Conference on Sustainable Agriculture

Link: https://ifory.id/abstract/J7Xu3KwTY6FC

Corresponding Author
Siti Nur Aisyah

Institutions
¹Universitas Quality Berastagi, North Sumatera, Indonesia
²Universitas Sumatera Utara, Medan, North Sumatera, Indonesia

Abstract
Good agricultural practices are necessary for increasing of crop production. This study aimed to determine the effect of husk rice charcoal and compound fertilizer on tomato growth and yield production. Husk rice charcoal was added using three levels including 0, 100, and 200 g/plant. Beside, compound fertilizer was added to media of plants with three levels including 0, 2, and 6 g/plant. The treatments were arranged in a randomized completely block design of which each treatment was made in three replicates. The results showed that application of 100 and 200 g husk charcoal/plant increased tomato growth and production of 60 to 110 g / plant and 15 to 30% respectively. In contrast, plant height at the age of 2 WAP, the application of compound fertilizer did not significantly affect yield production and plant height except plant height at 2 WAP. No interaction of the two treatments was found on plant growth and yield production.

Keywords
tomato, husk charcoal, supervitic fertilizer, production

Topic
International Conference on Sustainable Agriculture

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

Corresponding Author
Siti Nur Aisyah

Institutions
Department of Agrotechnology, Agriculture Faculty, INSTIPER Yogyakarta

Abstract
The objective of this study was to know the influence of cow manure and micoryza dosage to growth of oil palm seedling in pre nursery. This study has been done in Educational and Research Garden in Stiper Agricultural University (INSTIPER) at Maguwoharjo, Depok, Sleman, Yogyakarta on March until July 2018. The experimental design used was Completely Randomized Design with two factors. The first factor was 4 dosages of cow manures with volume comparison of subsoil. C1 (30% of cow manure), C2 (40 % of cow manure), C3 (50% of cow manure). The second factor was the dosage of mycoriza consist of Mo (no mycoriza), M1 (10 g mycoriza) and M2 (20 g mycoriza). The study used five replication. Data was analyzed by Anova followed by DMRT at 5 significant level. The result showed no significantly interaction between cow manure and mycoriza dosages application.

Keywords
cow manure, mycoriza, oil palm

Topic
International Conference on Sustainable Agriculture

Link: https://ifory.id/abstract/CfD2pzcAjeya

Corresponding Author
Siti Nur Aisyah

Institutions
1Department of Forest Management, Faculty of Forestry, Universitas Sumatera Utara,
Jl. Tridharma Ujung No.1, Kampus USU Medan, Sumatera Utara, Indonesia 20155

2Faculty of Agriculture, Universitas Sumatera Utara, Medan, Sumatera Utara Indonesia 20155

Abstract
Hevea brasiliensis was planted by the community of Simpang Kuta Buluh village and and Rumah Galuh Village because of its high economic value. The suitabilty land of Hevea brasiliensis in North Sumatra Province are important, especially in the agroforestry land that are often planted by the community. This study aimed to map the suitability of the land for Hevea brasiliensis in Simpang Kuta Buluh village and Rumah Galuh Village, Sei Bingai Sub District, Langkat, North Sumatra, Indonesia. The survey method was conducted to collect soil samples in the field. Land suitability classification (LSC) for Hevea brasiliensis was evaluated based on the matching method. The Geographic Information System (SIG) was used to map the land suitability both actual and potential land suitability. The results showed that the actual land suitability classes for Hevea brasiliensis in Simpang Kuta Buluh Village were moderately suitable (S2) (52,91%) and marginal suitable (S3) (47,09 %). The actual land suitability classes for Hevea brasiliensis in Rumah Galuh Village were moderately suitable (S2) (86,97%) and marginal suitable (S3) (13,03%). There were no suitable (S1) and not suitable (N) classes were found in both villages. There were several limiting factors in land suitability evaluation in the area, namely: temperature (tc), erosion hazard (eh), and root zone medium (rc).

Keywords
Agroforestry, hevea brasiliensis, GIS, Simpang Kuta Buluh Village, Rumah Galuh Village

Topic
International Conference on Sustainable Agriculture

Link: https://ifory.id/abstract/bepZ9v6yVtAg

Corresponding Author
Amanda Amanda

Institutions
1) Department of Community Health Sciences, Oita University of Nursing and Health Sciences
2) Shizuoka Cancer Center

Abstract
Background: It is well known that all patients undergoing laryngectomy need self-management of their own laryngectomy stoma. The aim of this study is to investigate factors associated with this self-management that can prevent aspiration trouble in stoma after a total laryngectomy and improve the quality of life for these patients and their families. Methods: A questionnaire survey was conducted concerning: “self-management of laryngectomy stoma”, “characteristics”, “self-care agency”, and “social networks and social support”. The questionnaires were distributed to 825 patients who belonged to peer support groups all over Japan. Multiple regression analysis was conducted to find factors associated with self-management that prevent aspiration trouble related to laryngectomy stoma. Results: Valid responses from participants were 429 (52.0%), and of these 381(88.0%) were male. Multiple regression analysis suggested that the ability to manage one-s own self-care, the ability to adjust one is own physical condition based on personal weaknesses, appraisal support and gender were associated with self-management related to laryngectomy stoma (Adj R2=.364, p<.001). Conclusion: In terms of self-management related to laryngectomy stoma, this study suggested that supporting the ability to manage one-s own self-care and continuing to provide appraisal support were necessary to improve and maintain the patients- self-management.

Keywords
Laryngectomy, Self-management, Self-care, Social support

Topic
International Conference on Nursing

Link: https://ifory.id/abstract/LTfbYPA47cjB