bluuebunny/crossref_metadata_2025 huggingface dataset:
The Role of the Notary Regional Supervisory Board in Preventing Legal Violations Committed by Notaries in Padang City
Authors: Shabrina Dina , Fendri Azmi , Adegustara Frenadin
Published: May 2019

The authority of the notary is very susceptible of legal violations. The role of the supervisory board is very important to maintain the notary profession in carrying out the authority. Law enforcement is urgently needed when a violation arises, in which a troubled notary must be sanctioned. Conducting research in the form of scientific work that studies the following research problems will be interesting: (1) what factors are the cause of legal violations committed by notaries in Padang City? (2) what is the role of the Regional Supervisory Board in preventing legal violations committed by notaries in Padang City? and (3) what actions are taken by the Regional Supervisory Board against the notaries who commit legal violations in Padang City. This study applies juridical empirical approach using secondary and primary data types. The Regional Supervisory Board of Padang City mentioned that the factors causing legal violations committed by the notaries in Padang City are that (1) the notary likes to accept a work that is not in accordance with the date stated in the deed and (2) the notary often does not see the client directly. Legal violations committed by notaries in Padang City can be prevented by conducting socialization and direct observation in the field. The action that can be taken if legal violations committed by notaries occurs is to carry out the inspection process in order to prove whether or not the notary has committed a violation.
Accrual Earnings Management and Real Earnings Management: Increase or Destroy Firm Value?
Authors: Darmawan I Putu Edi , T Sutrisno , Mardiati Endang
Published: May 2019

This study aims to investigate empirically the effect of accrual earnings management and real earnings management on firm value. The analysis technique used is multiple linear regression analysis. The research samples were manufacturing firms listed on the Indonesia Stock Exchange during the period of 2013 to 2017. The analysis tool used is Multiple Linear Regression. The test results showed that accrual earnings management measured by discretionary accruals did not affect on value of the firm. Real earnings management was found to have a negative effect on firm value.
The Impact of E-Planning Program Quality, Implementation of Internal Control System and Leadership Style on the Performance of State Civil Apparatur
Authors: Tandi Emilia Hesti , Nurkholis Nurkholis , Subekti Imam
Published: May 2019

The performance of the State Civil Apparatur (Aparatur Sipil Negara / ASN) is a crucial factor that must be continuously improved in order to support the regional development. This study aimed to investigate the impact of  the quality of E-planning program (X1), the implementation of internal control systems (X2) and leadership style (X3) on the performance of state civil apparatur (Y). This study used quantitative method. The population were 100 employees in the department of education of the East Nusa Tenggara province. Furthermore, the sampling technique used was total sampling. Data collection techniques were carried out using  questionnaire. The research data were analyzed using Partial Least Square (PLS) method. The results demonstrated the value of t statistics 2.431 on the variable of E-Planning program quality, 2.701 on the internal control system, and 6.639 on the leadership style. Since coefficients were more than the standard (t table) 1.96 and were positive. Thus, it can be concluded that there was a positive and significant impact of each independent variables on the performance of the state civil apparatur in the Department of Education of East Nusa Tenggara Province.
The Implementation of Imprisonment Sanction Followed by Rehabilitation Sanction for Narcotics Abusers (A Case Study of Verdict Number 47/Pid.Sus/2017/PN.Slk)
Authors: Yulianti Yessy , Danil Elwi , Zurnetti Aria
Published: May 2019

In the present study, the research problems proposed are: 1) What is the basic consideration of the judges in imposing the criminal and rehabilitation sanction on the perpetrators of narcotics abuse? 2) How is the proof of a case whose verdict is a criminal sanction? and 3) How is the implementation of imprisonment and rehabilitation sanction verdicts? In answering the research problems, juridical empirical approach is chosen to obtain primary data directly from informants and secondary data from primary of law materials including secondary and tertiary law materials. As a result, it can be concluded that there is a chance for a judge to impose imprisonment sanction and sanction for actions in a form of rehabilitation to perpetrators of narcotics abuse, but, in fact, it is challenging because of some reasons; one of which is the existence of various perceptions of law enforcement officers on the implementation of the laws, specifically on the Law number 35 of 2009 concerning Narcotics. Moreover, there is no strict provision regulating the procedures of the implementation of the law. As a result, it encounters many challenges in its implementation for the related institution. However, it should be concerned for the regulation makers for the realization of law enforcement reflecting justice, legal certainty, and benefits in the society.
COMPARATIVE ASSESSMENT OF EFFICIENCY ULTRASONIC AND SOUND METHODS OF ACTIVATION IRRIGATIONAL SOLUTION IN ROOT CHANNELS WITH SIMPLE AND DIFFICULT ANATOMY (PILOT STUDY)
Authors: Сорокоумова Дина , Sorokoumova Dina , Григорьев Сергей , Griroriev Sergey , Лаптева Ксения , Lapteva Ksenia , Шабалина Дарья , Shabalina daria , Киселева Дарья , Kiseleva Dar'ya , Шагалов Евгений , Shagalov Evgeniy , Леонова Любовь , Leonova Lyubov'
Published: May 2019

Background. The problem of increase in efficiency of endodontic treatment is relevant nowadays. Treat the decisive factors affecting quality of endodontic treatment: machining, irrigation and sealing of root channels. Machining of root channels does not allow to remove the greased layer. So an integral part of endodontic treatment is the irrigation of the root channel.

Objectives ― to choose an optimum way of activation of irrigational solutions for removal of the greased layer in root channels with difficult anatomy.

Methodology. The research of 30 intact painters removed on medical indications is conducted. Activation of irrigational solution was carried out by a sound the device EndoActivator and the ultrasonic IRRI K file on the device VDW.ULTRA. in root channels with simple and difficult anatomy. An object of a research was the internal wall of the root channel with the greased layer on the surface of dentine of the root. The research of samples was conducted by means of the scanning electronic microscope of JSM-6390LV.

Results. When machining on an internal wall of root channels on the surface of dentine the greased layer is formed. Studying of samples with simple anatomy of root channels and activation of irrigational solutions revealed that the greased layer is removed throughout. When studying samples of teeth with difficult anatomy of root channels, it is determined, partially open dentinny a tubule at activation of solutions ultrasonic or sound by methods, and completely open dentin a tubule at activation of irrigational solution by the combined method.

Conclusions. Carrying out activation of solutions in root channels with simple anatomy at a stage of a finishing irrigation is identical effectively as by ultrasonic, and sound methods. Application at a stage of a finishing irrigation of a sound method of activation in teeth with difficult anatomy of root channels allows to delete more than the greased layer, than ultrasonic activation. For the purpose of increase in efficiency of clarification of the root channel in teeth with difficult anatomy expediently combined use of sound and ultrasonic methods.
EXPERIMENTAL LOW ENERGY NANOSECOND LASEROTHERAPY AND MICROSURGERY OF MODELING PERIODONTITIS USING MORPHOLOGICAL ANALYSIS
Authors: Чунихин Андрей , Chunihin Andrey , Базикян Эрнест , Bazikyan Ernest
Published: May 2019

Background. The problem of the treatment of periodontal disease is acute in modern dentistry. The multiplicity of etipathogenetic factors causing the development of periodontitis, malignations associated with the loss of teeth cause the search for new methods of complex therapy of periodontal diseases, including the inclusion of modern laser technologies.
Purpose ― comparative assessment of the effect on the regeneration of periodontal tissues of nanosecond laser radiation with a wavelength of 1265 ± 5 nm of traditional photodynamic therapy using morphological and morphometric analysis in an in vivo experiment.
Methodology. Modeling of periodontitis in experimental animals was performed using a ligature technique for 7 days. Treatment of periodontitis began with mechanical and drug treatment of pockets, then the animals were divided into three groups. In the first group, a new nanosecond laser device with a wavelength of 1265 ± 5 nm was used for treatment, the second used traditional photodynamic therapy using a chlorine E6 photosensitizer, in the third group until the end of treatment only drug therapy was used. On days 7, 14, 21, a visual assessment of the condition of periodontal tissues in experimental animals, morphological and morphometric analysis were performed.
Results. On the 21st day of observation in the main group in the oral cavity, the periodontal regeneration process was completed, in the comparison group there are local pockets of shallow depth with granulation tissue. The morphological study showed that in the main group the number of full blood vessels in the field of view of the microscope at the later stages of treatment is 2.9 times higher than in the comparison group.
Conclusions. The results of the study confirmed the need to include laser techniques in the complex therapy of periodontal diseases. The use of new laser technology of nanosecond laser therapy and microsurgery in the treatment of periodontal diseases contributes to shortening the procedure time, shortening the rehabilitation time, and stimulating vascular growth.
PREVALENCE AND STRUCTURE OF DENTOALVEOLAR ANOMALIES IN ADOLESCENTS OF THE INDIGENOUS MINORITIES POPULATION OF THE KHANTY-MANSIYSK AUTONOMNIY OKRUG ― UGRA
Authors: Лебедев Сергей , Lebedev Sergey , Галимуллина Валерия , Galimullina Valeriya , Нагаева Марина , Nagaeva Marina , Тимофеева Юлия , Timofeeva Yulia
Published: May 2019

Object. Dentoalveolar anomalies contribute to the development of morphological and functional disorders in the temporomandibular joint, and also lead to changes in aesthetics, chewing functions and speech formation. This report presents the results of a study of the prevalence and structure of dentoalveolar anomalies in adolescents of the indigenous minorities population of the Khanty-Mansiysk Avtonomniy Okrug ― Ugra. Data on the epidemiology of dentoalveolar anomalies are necessary for planning regional measures for the prevention of dental anomalies and deformities in the study area.
The goal ― is to study the prevalence and the structure of dentoalveolar anomalies among adolescents of the indigenous minorities population of the Khanty-Mansiysk Avtonomniy Okrug ― Ugra.
Methodology. Expedition and exploration method carried out a comprehensive dental examination adolescents of indigenous minorities population in a number of areas of the Khanty-Mansiysk Avtonomniy Okrug ― Ugra. Evaluation of dental status was carried out according to the criteria of the World Health Organization. In the section “dento-alveolar anomalies”, the density of teeth and gaps, as well as the main types of malocclusion, were recorded.
Results. The prevalence of dentoalveolar anomalies among the surveyed was 35,4 %. The proportion of crowded teeth in the overall structure of the dental-alveolar anomalies is 30,3 %, the proportion of diastema is 2,1 %. The frequency of occlusion anomalies against the background of connective tissue dysplasia is 3,5 times higher.
Summary. The high prevalence of dentoalveolar anomalies among adolescents of the indigenous minorities population of the Khanty-Mansiyskiy Avtonomniy Okrug ― Ugra was revealed. Most often, dental-alveolar anomalies were occured in the form of crowding of the upper and lower teeth, the gaps between the incisors and canines, the abnormal position of the incisors on the upper and lower jaw, changes in the closure of the molars. Dental-alveolar anomalies were more often recorded in the group of adolescents with signs of CTD.
Biomass and Artemisinin Production of Artemisia annua L. on Several Altitudes
Authors: Nusantara Abimanyu Dipo , Bertham Yudhy Harini , Siswanto Usman , Andani Apri
Published: May 2019

Increasing supply of artemisinin as a multipurpose medicinal compound, especially to cope with malaria, is a global problem that should be solved immediately. This research aimed to obtain high artemisinin production from Artemisia annua L. cultivated at a suitable altitude at Bengkulu Province of Indonesia. Experimental design used was a Split Plot in Randomized Complete Block Design with three replications, altitude (1000, 1100 and 1200 m above sea level altitudes each located at Sukasari, Bandung Baru, and Tangsi Duren, Kepahyang District Province Bengkulu of Indonesia) as main plot and bio-fertilizer application (control, arbuscular mycorrhizal fungi, and phosphate solubilizer fungi) as subplot. Each experimental unit received 10 ton ha-1 of cow-dung. Research result shows that altitude significantly affects artemisinin, essential oil, mycorrhizal and phosphate solubilizer fungus population, but not affect biomass production. Overall, Artemisia annua L. was successfully planted at the 1000 - 1200 m above sea level. Biomass and artemisinin production was higher compared to another experiment, i.e. 350 g per plant with 0.21 - 0.43% of artemisinin content.
Alginate Encapsulation of Trichoderma harzianum as Biocontrol Agent against Brown spot Disease on Rice (Oryza sativa) in Vitro Assays
Authors: Mohd Anuar Intan Sakinah , Ku sulong Ku Asmah , Gani Husein Abdul , Safiâ€™n Nur Nadia , Samsudin Khairul Azman , Wahab Mohd Zafri
Published: May 2019

Brown spot caused by Bipolaris oryzae is an important rice disease which can cause a reduction in yield and grain quality in Malaysia. The application of chemical agents in controlling the brown spot disease can cause undesirable effects such as residual toxicity, environmental pollution, and development of pathogen resistance to fungicides. Instead, biocontrol methods have to be developed to ensure environmental safety, the longevity of usage while effective methods of plant disease management. However, to the best of our knowledge, no research has been conducted about alginate encapsulation of Trichoderma harzianum. Therefore, the objectives for this study is to measure the performance of encapsulation of Trichoderma harzianum isolates in controlling the brown spot disease on rice. Alginate encapsulation was produced from conidial suspension by adding sodium alginate and calcium chloride which result in small beads. The isolate was isolated and characterized based on morphological characters and have been proved by pathogenicity tests. Based on the results dual culture test showed the highest percentage inhibition of radial growth which was 85.07% with 10 replication of Bipolaris oryzae. The findings from this study can be used as an alternative method to control brown spot disease which will render easier application to rice plantation in the future which suit for commercial purposes and contamination-free environment.
Isolates of Lipolytic, Proteolytic and Cellulolytic Bacteria from Palm Oil Mill Effluent and Their Potency as Consortium
Authors: Said Muhammad , Faizal Muhammad , Yudono Bambang , Hasanudin  , Estuningsih Sriwi Pertiwi
Published: May 2019

Study of lipolytic, proteolytic and cellulolytic bacteria in variety, especially the study of isolation technique to identify, cultivation technique to produce many researchers have done enzyme and activity test.  While the study on lipolytic, proteolytic and cellulolytic that support the consortium bacteria having the capability of degrading fats, protein and cellulose being the wastewater components have not been conducted yet. This is a novelty of this study.  This study aims to obtain consortium of bacteria having lipolytic, proteolytic and cellulolytic capability from the palm oil mill effluent. The lipolytic, proteolytic and cellulolytic bacteria were isolated from the wastewater using medium mineral (MM), and each of the bacteria was enriched by vegetable oil, casein and Carboxy Methyl Cellulose (CMC). Each of the isolates of bacteria that had been selected was conducted oxygen requirement and synergism tests, and then the consortium of bacteria was wade. Two types of consortium of the bacteria were obtained, that is a facultative anaerobic consortium that consists of two bacteria Bacillus toyonensis strain BCT - 7112 and Stenotrophomonas rhizophila strain e-p10, and the aerobic consortium that consists of three bacteria, namely: Bacillus cereus ATCC 14579, Pseudomonas azotoformans strain NBRC 12693 and Burkholderia cepacia ATCC 25416.
Design of Energy Harvester Module with a Low RF Power Input for UHF RFID Tag
Authors: Rosyidah Ula Grace , Adiono Trio , Harimurti Suksmandhira , Salman Amy Hamidah
Published: May 2019

An UHF RFID system is required to be able to operate at long range coverage, typically at 1-4 m. As a result, the RF signal power received at RFID Tag is very low, typically at -10 dBm. Moreover, practically most of commercially used RFID Tag is passive, which means that it solely relies on the RF signal transmitted from the RFID reader as the power source. Therefore, it is mandatory and critical to design an efficient and low input power RFID Tag system. In this paper, an energy harvester module for UHF RFID Tag, which is able to work at low RF input signal power and generate a stable DC voltage output, is designed. The module is able to operate at a very low RF input power as low as -10 dBm or equal to 100 mVpeak of induced voltage. To obtain such performance, a modified and optimized rectifier-using a Dynamic Vth Cancellation technique, is designed. By using this technique, the rectifier is able to produce an efficient and a high output voltage. Additionally, bandgap reference and voltage regulator circuits are designed to be independent of power supply and temperature variation. As the result, a stable DC power supply output is able to be generated. All the circuits are designed on Silterra 130nm CMOS technology. This technology allows us to design the transistor to operate at a low threshold voltage of 0.1 V, which is very suitable for the application of low input power UHF RFID Tag system.
A Supportive Tool for Project Based Learning and Laboratory Based Education
Authors: Kautsar Irwan Alnarus , Sarno Riyanarto
Published: May 2019

This paper presents the current development supportive tool for both lecturers and students that conduct Project Based Learning (PBL) and Lab Based Education (LBE) on Higher Education Institution (HEI). For PBL and LBE implementations, lecturer needs to monitor, evaluate the learning process. And, students need to publish the learning outcomes in the public domain. In this research, we propose the supportive tool that will be used by lecturer which is taught on different academic courses. Also, the proposed supportive tool had designed to used by the student as a particular group. These groups were formed of the student from several academic courses that supervises by the same lecturer. The developed supportive tool are microframework based which mean it could be implemented on mini devices. The current development supportive tool could be an alternative software assistant that support lecturer to implement  Project Based Learning (PBL) and Lab Based Education (LBE). The developed supportive tool has been introduced to 135 students and 16 lecturers as a participant to evaluate the system usability. The results from the questionnaire show more than 90% of users state the benefit of the use supportive tool. Also from analyzing Log metric, users on average complete a designated task in just less than 5 minutes. It indicates that the developed supportive tool is easy to use and shows the effectiveness of the developed supportive tools.
Effectiveness of Ceramics Water Filter Pots with Addition of Silver Nitrate to Reduce of Escherichia Coli Contents
Authors: Kendarto Dwi Rustam , Mulyawan Adnan , Dwiratna NP Sophia , Bafdal Nurpilihan , Suryadi Edi
Published: May 2019

Efforts to create a filter alternative in an emergency is very necessary in order to meet the drinking water needs. Filter pottery is one alternative screening models are cheap and mobility, so it can be applied, however, the ability of pottery on filtering raw water into drinking water needs to explored.. This study tested the ability to pottery from a mixture of clay and fine rice husk with 0.001 mole added of silver nitrate and 0.0005 mole within the period of use. This study conducted in soil and water engineering laboratory, Universitas Padjadjaran, Environmental Laboratory Institute of Ecology Universitas Padjadjaran and Energy and Mineral Resources Laboratory, West Java Province. This study also conducted pore size analysis using Scanning electron microscope (SEM) in order to know the pore diameter and pore distribution formed from the ceramic pot filter. The faucal-coli analysis is performed as an indicator of filter quality generated from the ceramic pot filter. The results showed that added of silver nitrate to lower the flow rate of 0:35 l/h. The Increasing added of silver nitrate also showed an increase in water resulting residue 0:02. Increasing the number of used periods to decrease of silver nitrate residue 0001. The results show that ceramic pot filter can reduce the number of e-coli with significant amount. The size of the pores of ceramic pots formed shows a diameter smaller than the diameter of e-coli. There are still some cracks in the process of making ceramic pots, thereby reducing the ability of ceramic pot filters to reduce e-coli.
Identification of Prospective Product for the Development of Integrated Coconut Agroindustry in Indonesia
Authors: Mardesci Hermiza , Santosa - , Nazir Novizar , Hadiguna Rika Ampuh
Published: May 2019

Indonesia is one of the largest coconut producers in the world. However, diversification of processed coconut products in Indonesia is still far below other countries, such as the Philippines. Concerning this, the Indonesian government expects the development of an integrated coconut industry in Indonesia. This research aims to determine the process of determining processed products of coconut commodities that are prospective to be developed in an integrated manner in Indragiri Hilir, Riau, Indonesia. Seven stakeholders involved in the development of coconut agroindustry are interviewed. They are asked to fill in the questionnaire. The data obtained from the interviews and questionnaires were analysed using Fuzzy Group Decision Making technique. The independent preferences used are Multi Expert-Multi Criteria Decision Making and the Analytical Hierarchy Process (AHP) method. The results showed that prospective products developed for integrated coconut agro-industry were coconut oil, palm sugar, and shell charcoal. This result was obtained based on nine assessment criteria conducted by seven experts on ten alternative coconut products processed products. Coconut oil is very prospective to be developed if viewed from the aspect of the criteria of market opportunities and its linkages with the downstream industries. Moreover, coconut sugar also has an excellent prospect as the world market demand for palm sugar in Indonesia is quite significant, besides its absorption of labour and environmentally friendly. Shell charcoal is an industry with low production costs, but it has a great influence on the employment. The high demand of the world market also resulted in shell charcoal having high potential to be developed.
Automatic Cluster-oriented Seismicity Prediction Analysis of Earthquake Data Distribution in Indonesia
Authors: Barakbah Ali Ridho , Harsono Tri , Sudarsono Amang
Published: May 2019

Many researchers have analyzed the earthquakes to predict the earthquake period occurrences. However, they commonly faced the difficulty to project the prediction into the region adjusted to the earthquake data distribution and to provide an interpretation of the prediction for the region. This paper presents a new system for cluster-oriented seismicity prediction analysis, and semantic interpretation of the prediction result projected to the region. The system applies our automatic clustering algorithm to detect some clusters automatically depending on the earthquake data distribution and create clusters of the earthquake data for the prediction. The semantic interpretation is presented in the system to provide easier information from the seismicity prediction analysis. The system consists of four main computational functions: (1) Data acquisition and pre-processing, (2) Automatic clustering of earthquake data distribution, (3) Seismicity prediction of earthquake time period occurrence based on cluster with confidence levels of seismic event using the Guttenberg-Richter law, and (4) Region-based seismicity prediction analysis and semantic interpretation of the prediction for each cluster. For experiments, we use earthquake data series provided by the Advanced National Seismic System (ANSS) in the year 1963-2015 with the location of Indonesia. We made a series of experiments for earthquakes in Nias (2005), Yogyakarta (2006), and Padang (2009), with respectively 6.3, 7.6 and 8.7 Richter magnitude level. Our system presented the seismicity prediction analysis from each earthquake cluster and provided an easy interpretation of the prediction probability.
The Combination of Piper Caninum Blume Leaf Extract and Compost Fertilizer for Pressing Blast Disease and Improving Growth of Bali Red Rice (Oryza Sativa Linn)
Authors: Suriani Ni Luh , Darmadi Anak Agung Ketut , Parwanayoni Ni Made Susun , Abd Hamid Mohamad Hasnul Naim , Yamin Bohari M
Published: May 2019

Blast disease is a spotting disease on the leaves that attacks rice, rice grains become empty and finally causing a significant loss in rice production. Many factors that cause blast disease include the continuous use of synthetic fertilizers and pesticides which could decrease soil fertility resulting in a decrease in rice yield. One way to restore soil fertility and increase rice production is to use organic methods such as using biopesticides and compost. The purpose of this study is to obtain the most appropriate formulation between biopesticides, P. caninum BL. leaf extract and compost to suppress blast disease and improve results in red Bali rice cultivation. This research was conducted in the field in Senganan Village, Penebel, Tabanan Bali, a flat area of about 300m above sea level. The experiment was carried out using a randomized block design (RBD) with 4 set of different treatments. The mixture of 40% compost and 2% piper caninum Bl. leaf extract was found to be the most effective formulation to suppress blast disease by 57.17% when tested in a 0.2-hectare paddy field. The significant reduction of blast disease and the use of organic fertilizer have improved the growth of red rice as shown by the average number of tillers (12.9) and leaves (60.5 strands) after 12 weeks of transplant.   The yield of the rice after 3 months of cultivation was 5.51 ton / ha, an increase by 2.40%.  The morphology of the ripen grain of F4 treated clamps were studied and EDX analysis showed only carbon and oxygen are the major elements and trace amount of potassium and magnesium were detected. The crystalline nature of the rice is shown by the presence of polyhedral shape of starch with the size between 3 and 6 µm in the endosperm area. The silicon was only observed in the hull layer.  At an optimal extract concentration, the yield was increased significantly by 77%. However, above the optimal concentration of the extract toxic behaviour was observed in both the growth and reduction of yield. This may be due to the toxicity nature of the many active components that were present in the extract. Therefore, further study is necessary to understand the mode of action and side effects that enable to assist in the modelling work for cultivation management and practices.
Small-Scale Farmer Preferences: Exploring the Gap Towards Product Attributes of Local and Imported Fertilizers
Authors: Perdana Tomy , Utami Hesty Nurul , Sadeli Agriani Hermita , Hermiatin Fernianda Rahayu
Published: May 2019

Marketing program becomes a crucial matter for fertilizer industries to boost selling in a particular marketplace. Local fertilizer industries actors are tried to outperform the competitor from other countries. The research objective is to explore horticulture small-scale farmer preference for product attributes of local and imported fertilizer. The research was conducted in Java, Indonesia as a representative region of horticultural farmers. This study used a survey method to gather data from 513 small-scale farmers horticultural farmers which spread over four provinces in Java Island. The data were analyzed with  MANOVA analysis. The result shows that farmers have a similar preference for local and imported fertilizers concerning price, promotion, and nutrient content. Farmers prefer price between IDR 16,000 to IDR 20,000 per kg, promotion through farm demonstration plot, and product content additional micro-nutrients and vitamins. On the other hand, there is a distinct preference for the design of fertilizer packaging. Farmers prefer imported fertilizer with an additional image, but not on local fertilizers. This finding serves as a reference to fertilizer producers in improving their marketing strategy. Local fertilizers producers should undertake a strategy adjusted to farmer preferences to win the competition in local market. This research only represents the behavior on the small-scale farmers, the result might be different if it apply in a large-scale farmer because this type of farmer has different characteristic which will influence to their preference of fertilizer.
Value Chain Analysis and Value Added Enhancement of Indonesia Crude Palm Oil Supply Chain
Authors: Hidayati Juliza , Hasibuan Sawarni
Published: May 2019

PT. XYZ is a manufacturing company that produces Crude Palm Oil (CPO). The competition Crude Palm Oil (CPO) company do not only happen in manufacturing companies but also among supply chain components. Due to the increase of fierce competition, it is necessary to improve companies’ value chain that may increase productivity and reduce costs. The purpose of this study was to analyze the supply chain and value chain of CPO in some companies. Data were analyzed using both qualitative and quantitative analysis within descriptive research.  This research was started by conducting a supply chain analysis and followed by a value chain analysis and ended with an improvement of the value chain. The qualitative analysis describes supply chain and value chain while the quantitative analysis is used to find out value-added values and establishment of the value chain. Based on the analysis, the value chain of CPO in the company consists of four main participants: suppliers of raw materials (plantation), processing plant, distributor, and customer. In this research, the analysis was focused on two participants: palm oil plantation and palm oil processing plant. The oil palm plantation activities include nurseries, planting, plant maintenance, harvesting, and shipping while the processing plant consists of reception, sterilizing, threshing, pressing, and classification. The company's value-added actual condition in oil palm plantation was 72.42% and palm oil processing plant was 10.13%. A low-cost strategy had been applied, resulting in the value-added increasing of oil palm plantations by 1.08% and at processing plants by 11.73%. The increase in value-added has been able to reduce the company’s costs. However, this study still has limitations because the analysis only covers plantation and processing plant value chain; the company’s distribution and consumers of CPO products for maximizing the value-added of a CPO value chain have not yet been studied.
On Tackling Real-Life Optimization Problems
Authors: Abd-Alsabour Nadia
Published: May 2019

Most real-world applications are concerned with minimizing or maximizing some quantity so as to enhance some result. This emphasizes the importance of optimization and subsequently the significance of the optimization methods that are able to tackle these real-life optimization problems. There are a number of practical reasons for which traditional optimization and exhaustive algorithms cannot deal with a variety of these real-life optimization applications although there are numerous optimization problems that can benefit from applying these traditional optimization algorithms to handle them. Therefore, their is a need for propsong new optimization algorithms (such as nature inspired optimization methods) and optimize the capabilities of the existing ones (such as hybridization and parallelization) as well. This paper investigates the most recent optimization directions for dealing with the real-life optimization problems with an application to one of the most common and important optimization problems in a variety of financial fields and other fields which is the portfolio optimization problem since it is considered one of the most crucial problems in the modern financial management and has a variety of applications such as asset management and building strategic asset allocation. The computational results were got utilizing benchmark data from the OR library with the use of modern optimization algorithms. In addition, the article highlights the differences and similarities among the utilized optimization methods. In addition, recent advancements to the utilized optimization methods are highlighted.
Spatial-Temporal Patterns of Agricultural Drought in Upper Progo Watershed Based on Remote Sensing and Land Physical Characteristics
Authors: Widiyatmoko Wahyu , Sudibyakto - , Nurjani Emilya , Safriani Eka Wulan
Published: May 2019

Agricultural drought is alarmed by meteorological drought characterized by lower year-to-year rainfall. Under long period and continuous water deficits, plants may demonstrate stress symptoms and wilt or die. Furthermore, agricultural drought leads to crop failures and threaten the food security of an area. Progo Hulu sub-watershed is a major agricultural area in Temanggung Regency. Spatial-temporal pattern-based information about agricultural drought can be a basis for decision making in drought mitigation. This study aims to analyze spatial and temporal distribution patterns of drought, analyze the physical characteristics of land and their influence on drought pattern, and establish a prediction model of drought distribution patterns based on four physical characteristics of the land. Landsat 8 imagery is used to determine the spatial and temporal patterns of agricultural drought in Upper Progo watershed using an improved Temperature vegetation Dryness Index (iTVDI). Slope, land use, landform, and soil texture are the physical characteristics of land as the variables to determine the most influential factor of drought pattern. They are analyzed using multiple regression analysis techniques. Pixel samples are obtained through purposive sampling method based on land units. The results reveal that the spatial-temporal distribution of agricultural drought occurs rapidly on the slopes and foothills of Sumbing and Sindoro. These areas have the highest average value of the iTVDI index. Agricultural drought extends gradually in line with the number of days without rainfall. Landform is a physical characteristic that most influences the distribution of agricultural drought. The established model by utilizing four variables of physical characteristics generates an average value which almost similar to the iTVDI value produced by remote sensing data. The model can be useful to estimate drought distribution based on the number of days without rainfall.
The Effect of K-Carrageenan Addition to the Characteristics of Jicama Starch-Based Edible Coating and Its Potential Application on The Grapevine
Authors: Wahjuningsih Sri Budi , Rohadi  , Susanti Siti , Setyanto Henricus Yayan
Published: May 2019

Public awareness of food quality is an essential thing during the packaging application. Considering the environment issue, edible coating with starch-based has been applied as packaging with environment-friendly. The high quality of starch is also produced by jicama (Pachyrhizus erosus). However, the application of jicama as an edible coating for grapevine (Vitis vinira L) remains unknown. Therefore, this research aims to determine the influence of k-carrageenan addition with various concentration to the physical and chemical characteristics of Jicama (Pachyrhizus erosus) starch-based edible coating and its potential application on Grapevines (Vitis vinira L.). This research was using randomized design with one addition factor (k-carrageenan): A1 =k-carrageenan 0.5% (w/v); A2 =k-carrageenan 1% (w/v); A3 =k-carrageenan 1.5% (w/v); A4 =k-carrageenan 2% (w/v); A5 =k-carrageenan 2% w/v). All measurements are repeated three times. The collected data were analyzed by variance analysis (p<0.05) and Duncan’s differential analysis for further analysis. The result showed that k-carrageenan addition was significantly influenced the thickness, moisture content, tensile strength value, and WVTR value of the produced edible coating (p<0.05). Treatment A5 has produced films with the good physical characteristics consisting of moisture content at 22.76%, thickness at 1.01 mm, tensile strength at 7.42 kgf/cm2, and WVTR value at 6.748 g/m2 per hour. The edible coating applied on Grapevine with the dipping technique showed that k-carrageenan was significantly increasing the rate of vitamin C and reducing the weight up to day 9 of storage (p<0.05) as compared to control. Meanwhile, based on the sensory evaluation, k-carrageenan addition has insignificantly influenced the color and the texture preference (p > 0.05).
Ambar: A Competence-Evaluating System for Preschool Children
Authors: Ruiz Ledesma Elena Fabiola , Garay JimÃ©nez Laura Ivoone , Arellano Chadwick Carreto
Published: May 2019

This paper describes the development and implementation of AMBAR: an evaluation system whose objective is to measure children’s competence achievement during the early childhood better, and provide support material according to the child’s needs. Based on a predetermined scale, a level of achievement of each competency is assigned to the child, according to said level, the system will provide digital educational resources to the student, as to aid their development and reinforce previously acquired knowledge. After the child has completed their assigned activities, AMBAR will reevaluate their learning, assign them a new level of achievement, and provide new exercises. The system does also generate a results record for every student. The employed methodology was of a mixed nature; qualitative, because of the description of profiles associated to descriptively analyzed categories, and quantitative, given that statistic significant differences (p=0.5) were determined before and after the use of any resources for any of said categories.
Relationship between Mathematical Parameters of Modified Van der Pol Oscillator Model and ECG Morphological Features
Authors: Silvestri Francesca , Acciarito Simone , Khanal Gauray Mani
Published: May 2019

The mathematical model describes the electrical and mechanical activity of the cardiac conduction system thought set of differential equations. By changing the value of parameters included in these equations, it is possible to change the amplitude and the period of ECG waves. Although this model is a powerful tool for modeling the electrical activity of the heart, its use is often limited to those familiar with the differential equations that describe the system. The purpose of this work is to provide a system that allows generating an ECG signal using Ryzhii model without knowing the details of differential equations. First, we provide the relationships between the ECG wave features and the model parameters; then we generalize them through fitting neural networks. Finally, putting in series fitting neural network and heart model, we provide a system that allows generating a synthetic signal by setting as input only the morphological ECG feature. We computed numerical simulation in Simulink environment and implemented the fitting neural networks in Matlab. Results show that non-linear trends characterize the correlation functions between ECG morphological features and model parameters and that the fitting neural networks can generalized this trend by providing the model parameters given in input the respectively ECG feature.
Design and Evaluation of a Scalable Engine for 3D-FFT Computation in an FPGA Cluster
Authors: Ammendola Roberto , Loreti Pierpaolo
Published: May 2019

The Three Dimensional Fast Fourier Transform (3D-FFT) is commonly used to solve the partial differential equations describing the system evolution in several physical phenomena, such as the motion of viscous fluids described by the Navier-Stokes equations. Simulation of such problems requires the use of a parallel High-Performance Computing architecture since the size of the problem grows with the cube of the FFT size, and the representation of the single point comprises several double precision floating- point complex numbers. Modern High-Performance Computing (HPC) systems are considering the inclusion of FPGAs as components of this computing architecture because they can combine effective hardware acceleration capabilities and dedicated communication facilities. Furthermore, the network topology can be optimized for the specific calculation that the cluster must perform, especially in the case of algorithms limited by the data exchange delay between the processors. In this paper, we explore an HPC design that uses FPGA accelerators to compute the 3DFFT. We devise a scalable FFT engine based on a custom radix-2 double-precision core that is used to implement the Decimation in Frequency version of the Cooley-Tukey FFT algorithm. The FFT engine can be adapted to different technology constraints and networking topologies by adjusting the number of cores and configuration parameters in order to minimize the overall calculation time. We compare the various possible configurations with the technological limits of available hardware. Finally, we evaluate the bandwidth required for continuous FFT execution in the APEnet toroidal mesh network.
Towards Neuro-Inspired Electronic Oscillators Based on The Dynamical Relaying Mechanism
Authors: Susi Gianluca , Acciarito Simone , Pascual Teodoro , Cristini Alessandro , Maestú Fernando
Published: May 2019

Electronic oscillators are used for the generation of both continuous and discrete signals, playing a fundamental role in today’s electronics. In both contexts, these systems require stringent performances such as spectral purity, low phase noise, frequency and temperature stability. In state of the art oscillators the preservation of some of these aspects is jeopardized by specific critical issues, e.g., the sensitivity to load capacitance or the component aging over time. This leaves room for the search of new technologies for their realization. On the other hand, in the last decade electronics has been influenced by a growing number of neuro-inspired mechanisms, which allowed for alternative techniques aimed at solving some classical critical issues.In this paper we present an exploratory study for the development of electronic oscillators based on the neuro-inspired mechanism dynamical relaying, which relies on a structure composed of three delay coupled units (as neurons or even neuron populations) able to resonate and self-organise to generate and maintain a given rhythm with great reliability over a considerable parameter range, showing robustness to noise. We used the recent leaky integrated and fire with latency (LIFL) as neuron model. We have initially developed the mathematical model of the neuro-inspired oscillator, and implemented it using Matlab®; then, we have realized the schematic of such system in PSpice®. Finally, the model has been validated to verify whether it observes the fundamental properties of the dynamical relaying mechanisms described in computational neuroscience studies, and if the circuit implementation presents the same behaviour of the mathematical model.Validation results suggest that the dynamical relaying mechanism can be proficuously taken in consideration as alternative strategy for the design of electronic oscillators.
Research and Design an Experimental Model for the Determination of Deposits Formation Mechanism in the Combustion Chamber
Authors: Pham Van Viet
Published: May 2019

One of the important researches on fuel use in diesel engines is the basic study of deposits formation in engine combustion chambers. The process of creating deposits in the engine combustion chamber is a complex phenomenon causing many different problems. Therefore, it is necessary to study the mechanism of deposits formation and development in engine combustion chamber when using traditional diesel or biodiesel. The study of combustion chamber deposits in internal engines was conducted to understand the effects of deposits on the engine and how they were formed and developed. Most of the current studies on deposits are carried out using statistical results from vehicle’s engines. Testing on real engines requires a long time and long distance travel, which makes the cost of both tests very high, causes damage to the engine during deposits testing. Studying and finding a simpler, more cost-effective experimental model that meets the requirements of the deposits formation testing and assessing the factors that make up them are essential. An experimental model design to determine the formation mechanism of deposits in the combustion chamber is the key point of the paper. This study clarifies the deposits formation of fuel in the engine by using a method called a heated surfaces deposits formation testing (HSDFT) and simulate the accumulation and development of deposits in combustion chamber. This model will help researchers to initially build the database effectively to determine the deposits formation mechanism in the combustion chamber of diesel engines when using different fuel.