bluuebunny/crossref_metadata_2025 huggingface dataset:
A High-Speed Serial Digital Interface Video Signal Jitter Measurement Method
Authors: Li Difei , Chen He , Gao Hongying , Zhao Kejia , Wu Zhaochun , Li Bo
Published: December 2019

This paper designs a measurement method for high-speed serial digital interface video signal jitter. Firstly, we introduce the features of SDI signal and the jitter measurement methods of traditional high-speed serial signals. A jitter model is built for the SDI signal while the properties of the components are analysed. An adjusted dual-Dirac model is adopted to measure the jitter in the signal. This method can accurately analyse different jitter components in SDI signals. It is directly performed on oscilloscope, which is beneficial to the traceability of the jitter. The feasibility of the method is verified by experiments. The measurement results show that the method has better measurement accuracy than the direct spectrum method.
Analysis risk of dynamic stability of power network with multiple small motor groups equivalent to each other
Authors: Yang Lei , Xiang Chuan , He Xin , Xing Chao , Xi Xinze , Sheng Shixian , Xiao Can , Liao Jiasi
Published: December 2019

The BPA data of the regional power grid is usually only used for the detailed modeling of the 110kV grid connected substation, and the 35kV and the following grid station generally use the equivalent parameters of the equivalent capacity of the unit, and then be incorporated into the 110kV power grid for simulation analysis. In order to analyze the accuracy of power system stability simulation after equivalence, a detailed model of the grid connected small hydropower units with 35kV and the following is built. The results show that, using a plurality of small hydropower units group area grid equivalence, dynamic stability analysis of differences, there are regional power grid internal oscillation mode equivalent and cannot reflect the regional oscillation modes in small turbine.
Method of determining vehicle speed according to video stream data
Authors: Murashov I , Stroganov Y
Published: December 2019

This article presents a method of determining the speed of a dynamic object from the data of a video stream. The determination of speed occurs based on the analysis of repeated objects of the environment, the distance between which varies according to a previously known law, such as lamp posts, milestones or bump stops on roads, intermittent road marking lines, emergency exits in tunnels. The method of determining vehicle speed includes three steps: pre-processing of the frame, searching for a pattern in the image, calculating the average vehicle speed obtained on the basis of the number of repeated objects, taking into account the law of their repetition and the distance between them for some fixed time. The advantage of the proposed method is that there is no need to install any additional sensors on the dynamic object except video camera. The development of an additional method for calculating speed has a significant application value for the complexes of control of autonomous traffic, as the existing methods of determining speed have their disadvantages (not high enough accuracy, the requirement for the presence of additional equipment). This algorithm was studied on regularly recurring objects (lampposts) under different lighting conditions (day, night), the distance between repeated objects and different weather conditions. It was also compared with other methods of determining the speed of the data from the video stream, the results of which the proposed method has a significant advantage in accuracy as compared with analogs in the absence of interference with video.
Decision support system for an early-stage keratoconus diagnosis
Authors: Salem B R , Solodovnikov V I
Published: December 2019

Currently, there is a wide variety of different diseases that exist, a lot of which can be hardly prompt diagnosed even by medical specialists. This paper presents a method for early-stage diagnosis of ophthalmologic disorder keratoconus. Working with medical imagery that was captured by a rotating Scheimpflug camera system for anterior segment analysis, the goal was to create a decision support system to aid ophthalmologists in prompt detection of the disorder to eliminate the chance of further surgical intervention. Given approach uses several steps to achieve that goal, such as find the region of interest on the medical imagery using a Single Shot MultiBox Detector, filter and binarize the image, locate the cornea and approximate the curve with least squares fitting, classify the stage according to the previously labeled dataset by medical specialists with a random forest method. The suggested approach achieves 76% precision on a dataset containing 500 images of the patients with the first stage of keratoconus and healthy patients. The final result was compared with modern existing medical methods that are usually used in ophthalmologic clinics by medical specialists.
A quantitative analysis pattern for regional risk conduction
Authors: Su Jie , Zhang Xinyue , Zhou Ling , Yin Yue
Published: December 2019

Risk conduction refers to a certain risk can lead to the spread of risk accidents, causing other risks through many ways. Conductivity is a basic characteristic of risk, especially when the research object is regional risk. Aiming at the conductive characteristics of regional risk in scenic spots, based on Bayesian rule and total probability formula, this paper explored a regional risk conduction pattern. Firstly, risk management system consists of risk carrier, risk incentive and risk performance. The consequences of one risk may also be the risk environment of another risk, so the correlation between risks can be established. Secondly, construct regional risk transmission network with three layers of variables. Starting with the specific risks, analyzing the possible risk consequences, judging whether these risk consequences will lead to secondary risks and calculating the conditional probability of secondary risks based on conditional probability and full probability formula. Last, according to the conduction probability between risks, the comprehensive severity of the consequences is calculated after considering risk transmission. The conduction probability between risks and seriousness of risk after considering conduction can be obtained through this model. It provides a quantitative analysis tool for regional risk management and is helpful in two aspects: providing monitoring focus before risk occurs, and cutting off conduction path to prevent further risk expansion when risk occurs.
Robust beamforming optimization for magnetic resonance coupling wireless power transfer systems
Authors: Lin Wuxing , Xu Zhimeng , Hu Jinsong
Published: December 2019

Magnetic Resonance Coupling (MRC) wireless power transfer (WPT) is a promising technique for portable devices and Internet of Things applications, which can transfer power to energy-constrained terminals in mid-range with relatively high efficiency. To enhance the transfer performance, by applying more coils in transceivers, multiple-input single-output (MISO) MRC-WPT system has attracted much attention in recent years. In this paper, a MISO MRC-WPT system with multiple transmitters (TXs) and a single receiver (RX) is studied and its robust magnetic beamforming problem is investigated. The optimal robust beamforming design of the currents of TXs is investigated to maximize the power received by RX with the mutual inductance error between TXs and RX, whereas the total power required is less than a certain value and each TXs has a certain limited transmitting power. By using certain transformation techniques, the optimization problem is converted into a relaxed semidefinite programming (SDP) problem which can be solved efficiently. We further prove that the solution of the relaxed SDP problem is always rank-one, which indicates that the relaxation is tight, and the optimal solution for the problem was obtained. Numerical results demonstrate that the proposed beamforming design can achieve up to 97% transfer efficiency by reducing the measurement errors.
Grid-search wolf pack optimization algorithm for two-dimensional OTSU image segmentation
Authors: Lv Ziyi , Liu Kang , Wang Dongxing , Qian Xu
Published: December 2019

Compared with One-Dimensional OTSU, Two-Dimensional OTSU includes the relationship about the pixels of the image and improves the anti-noise ability of the algorithm. However, as a result of too much computation caused by considering the relationship about pixels of the image to be processed, Two-Dimensional OTSU always takes much time. To keep the good performance of original Two-Dimensional OTSU as well as reduce the time spent; this paper proposes Grid-Search Wolf Pack Optimization Algorithm (GSWA) for Two-Dimensional OTSU Image Segmentation. Firstly, it is based on the thought of adaptive shrinking grid search chaos wolf optimization algorithm with adaptive standard-deviation updating amount (ASGS-CWOA) that traditional wolf pack optimization algorithm was improved to enhance its performance, which includes Grid Search and Opposite-Middle Raid(OMR). Grid Search can enhance the wolf pack’s summon and siege capability. Moreover, discrete step-size was adopted to adapt to discrete solution space of Image-Segmentation. Experimental results indicate that GSWA-OTSU not only reduces the segmentation time, but also takes the segmentation quality into account.
Low-carbon optimization of spatial pattern in Shenfu New District based on genetic algorithm
Authors: Jia Peiwen , Fu Shilei , Li Zhenxing , He Huan
Published: December 2019

The realization of low-carbon development is the key to solving the global climate change problem. China’s total carbon emissions share in the world is increasing year by year. Taking the road of low-carbon city development is the inevitable trend of China’s city development in the future. Increasing the concentration of urban land space can improve energy utilization and achieve the optimal goal of energy conservation and emission reduction. Genetic algorithm is a method to search the optimal solution by simulating the natural evolution process, providing a scientific solution for low-carbon city planning. This paper starts with the spatial arrangement of land use, minimizes people’s spatial travel distance through the global optimization ability of genetic algorithm. It summarizes the low-carbon spatial organization characteristics of Shenyang-Fushun New City, explores the analysis method of urban spatial low-carbon pattern, puts forward the optimization strategies of urban spatial structure, urban transportation network, green space system and low-carbon industrial layout, adjusts the development trend of urban areas, promotes low-carbon living and production behaviours, and provides theoretical basis and practical experience for the planning of low-carbon cities.
Overall setting and cooperation method for power protection of large hydropower plants
Authors: Yang Lei , Xiang Chuan , He Xin , Xing Chao , Xi Xinze , Sheng Shixian , Xiao Can , Liao Jiasi
Published: December 2019

Aiming at solving the operation risk problems caused by the improper protection settings, this paper proposed a new method for the protection setting of the auxiliary power of large hydropower plants. This method applied the idea of setting from LV grade to HV grade, where each type of protection sets the value based on the setting principles and calibrates their sensitivity with their own protection range. This method handled the insufficient sensitivities of protection at the price of sacrificing the lower levels of the protection. Then based on the settings from the dispatch and control center, it vertically conducted the verification of protection setting coordination, preventing the override tripping and expanded scope of accidents. The practical applications indicate that this method could improve the protection setting accuracy of large hydropower plants and limit the operation risks of the auxiliary power within a low level.
Simulation application of virtual reality technology in legal education
Authors: Jian Kunyi , Nai Peng , Yu Tao
Published: December 2019

The virtual simulation teaching of law is a systematic practice course of judicial case handling. This course introduces VR technology, enabling testers to play the role of a judicial officer in a virtual environment to handle cases. This design is realized through the intersection of the teaching design by the arts and sciences, the construction of virtual models, and man-machine interaction. Through this design, students can improve their ability to handle cases, develop students’ thinking, and enhance students’ ability to use their knowledge comprehensively. In order to ensure better experimental results, it is necessary to provide technical support from scene simulation, case simulation, mechanism simulation and so on.
Combining simulation model and field observation in understanding crop productivity to climate variation
Authors: Tjahjono R E P , Perdinan  , Purwanti D , Gunawan L V , Nadhifah F N
Published: December 2019

Changes in climate characteristics affect the growth and development of paddy and therefore affect rice productivity. Simulation model can be used to study the effect of climate change on rice productivity. In this study, combination of crop simulation model and field observation are used to comprehend the effect of climate change on rice productivity. The study uses field observation data. Climate, soil, and crop management input variable are similar to observation conditions. This research used default Aquacrop to estimate rice productivity in response to climate changes in Subang and also used DSSAT to estimate rice productivity and biomass components. The observation results showed that rice productivity in Pamanukan, Binong, Pagaden, Purwadadi, and Cijambe are about 6, 9, 7, 7, and 4 ton/ha. The output of the crop simulation model shows that rice productivity estimation based on the model have similar amount to rice productivity based on the field observation. Productivity estimation of simulation models is based on climate variations distinguished by temperature and rainfall accumulation. In the applications, it can be used to prepare mitigation and adaptation actions
Preparation and Characterization of Activated Carbon from Palm Kernel Shell at Low Temperature as an Adsorbent for Methylene Blue
Authors: Fahmi A G , Abidin Z , Kusmana C , Kharisma D , Prajaputra V , Rahmawati W R
Published: December 2019

The preparation of activated carbon as an adsorbent from biomass waste was usually conducted at high temperatures. In this research, activated carbon was prepared from palm kernel shell by the pyrolysis process at temperature under 400 °C to reduce excessive energy consumption. This study aims to identify the surface character of the formed activated carbon as an adsorbent for methylene blue. The pyrolysis process produced activated carbon which has a hydroxyl (3102–3423 cm−1) and carboxyl (1650 cm−1) functional groups, resulting in ionic interactions between activated carbon and methylene blue. The equilibrium data fit the Langmuir isotherm model with correlation efficient higher than 0,99. The highest adsorption capacity is 0.28 mmol/g adsorbent for activated carbon which is hydrolyzed at 350 °C with a surface area of 523 m2/g adsorbents.
Spatial model of peatland fire control strategies through peat maturity level approach: Case Study of the Kepulauan Meranti District
Authors: Turmudi  , Saharjo B H , Prasetyo L B , Tjahjono B
Published: December 2019

Tropical peatland in Indonesia is the largest in the world. Approximately 30% of the area potentially can be converted into agriculture and plantations. However, it is very susceptible to forest fires due to agricultural land preparation. The practice of burning forests is done because of some reasons namely fast, inexpensive, and produced ash that will fertilize the soil. The impact of land and forest fires is very large both in terms of economic, social, and environmental. Fires on peat lands consist of crown fire, surface fire, and ground fire which have a severe impact on environmental, social and economic impacts. In terms of management, it is also more difficult and longer time compares to fires on mineral land. The main objective of this paper is to use spatial modeling to provide an early warning system for forest fires on peat lands based on peat maturity level approaches. Physical data, which include the level of maturity, peat thickness, land unit, and land cover will be considered as an independent variable. Meranti Islands District, Riau Province is selected as a case area. The spatial analysis was carried out on physical aspects and the distribution of hotspots that had a level of confidence greater than 80%. The results showed that identification of potential fires through peat maturity levels, cannot be used optimally because peat areas that have different levels of maturity are not separate polygons or still in atribut form., The land cover of shrubs should be a major concern in the identification of potential fires.
Contribution of forest degradation in Indonesia’s GHG emissions: Profile and opportunity to improve its estimation accuracy
Authors: Adinugroho W C , Prasetyo L B , Kusmana C , Krisnawati H
Published: December 2019

The degradation of tropical forests in Indonesia is perceived to be an essential contributor to land-based greenhouse gas (GHG) emissions, in addition to deforestation. However, the impacts of forest degradation are currently understudied and poorly understood, in comparison to deforestation, which is easier to be detected and thus more ready to be quantified and monitored. In order to understand better the contributing factors of Indonesia’s GHG emissions profiles from the forestry sector as well as taking the opportunity to tackle climate change, improving knowledge on GHG emissions from forest degradation is essential. Both literature review and simulation using a carbon accounting model were used in the analysis. National emissions profile of Indonesia has been reported to the UNFCCC, in which forest degradation has been one of the sources of emissions, although its emission value tended to be underestimated and may contain high uncertainty. It is because logging and fires in secondary forests have not been fully captured as sources of emissions, as well as post-disturbance growth that potentially enhance forest carbon stocks. This study clearly shows the importance of calculating GHG emissions from forest degradation caused by anthropogenic activities (logging, fires). It is suggested that accuracy can be improved by using a system approach that occurs in the ecosystem carbon cycle through modeling that can capture the flow of carbon following the disturbance events.
Land use/cover changes and spatial distribution pattern of rice field decreasing trend in Serang Regency, Banten Province
Authors: Pravitasari A E , Suhada A , Mulya S P , Rustiadi E , Murtadho A , Wulandari Siti , Widodo C E
Published: December 2019

Serang is one regency in Banten Province which is located near to Jabodetabek, the largest metropolitan area in Indonesia. The economic growth at its periphery has a negative impact on the decreasing of rice field in the regency. Objectives of this research are: (1) to analyze decreasing of rice field in Serang Regency from 2006 to 2018 and to project land-use change in 2030, and (2) to identify spatial distribution pattern of rice field in Serang Regency. Land-use change was conducted by ArcGIS10.3 using Landsat images. Identification of spatial distribution pattern of rice field was conducted by Moran and LISA (Local Indicator of Spatial Autocorrelation). Meanwhile, land-use change projection was conducted using CA-Markov. Results show that during 2006-2018 there has been an increase of built-up area (7,295 hectares) and decreasing of rice field from 60,949 hectares to 54,232 hectares. A larger decreasing rice field occurred at districts located at the eastern part of Serang Regency. The result of land-use change projection shows the increase of built-up area and rice field conversion in Serang Regency in 2030. Decreasing rice field in the long term may threaten food security at the local and regional level.
Spatial modeling of paddy fields in Gorontalo Regency, Indonesia
Authors: Subandi E L , Widiatmaka  , Ardiansyah M
Published: December 2019

Gorontalo Regency has the largest paddy field area in Gorontalo Province. But until now paddy fields in Gorontalo Regency continue to experience conversion. Protection of paddy fields is very important so that the rice needs are still fulfilled so as to realize food sovereignty. The objective of this research is to compile the spatial model of paddy fields in Gorontalo Regency in 2015-2035. The method used is a Weighted Linear Combination (WLC) based on Geographic Information Systems (GIS) and Cellular Automata (CA), and uses thematic accuracy tests for model validation. The results of the validation of the spatial model of paddy fields in Gorontalo Regency have a good level of accuracy, so that the scenarios built can be accepted. Based on scenario 1, paddy fields in 2015-2035 experienced significant conversions despite the increase in paddy fields in other places. The policy intervention built on scenario 2 shows that conversion of paddy fields in 2015-2035 can be slightly suppressed, but the area of paddy fields is still decreasing. The policy intervention built on scenario 3 shows that most of the conversion of paddy fields in 2015-2035 can be reduced so that the area of paddy fields can increase.
Ecotourism land suitability based on the different weighting method in the buffer zone of Mount Ceremai National Park, Kuningan Regency, West Java Province
Authors: Nugraha D , Alikodra H S , Kusmana C , Setiawan Y
Published: December 2019

Location suitability selection for ecotourism development is determined by various variables. Differences in the characteristics and complexity of the region cause each variable to have a different influence. In the process of multi-criteria decision analysis, the influence of each variable can be identified through several weighting methods, such as ranking, rating, and pairwise comparisons. This paper aims to show the result of land suitability examining for ecotourism development using the different weighting methods and selecting the best method according to the complexity of the case. This research was conducted by using ten ecotourism suitability variables in the buffer zone of Mount Ceremai National Park in Kuningan District, West Java Province. Based on the results of the analysis, the differences of the ecotourism suitability map that had produced by the Ranking and Rating methods were not significantly different. However, the pairwise method produced different suitability maps than that of rating and ranking. Pairwise tends to classify a larger area as a suitable class. Therefore, the selection of weighting methods can be adjusted to the need and availability of existing resources.
Analysis of risk failure of solid waste management processes in universities: Case Study of Pancasila University Jakarta
Authors: Rimantho D , Hidayah N Y , Herzanita A
Published: December 2019

The concern for environmental impacts is environmental degradation. One of the environmental problems is solid waste which has the potential to cause dangerous risks. Therefore, this study will analyze the risk of solid waste management factors at the university using the Failure Mode Effect Analysis (FMEA) method. Some information about risk factors from the solid waste management process was collected using literature studies and Ishikawa diagrams. The number of experts or experts used in this study was 5 people. The expected results of this study will be able to show the value of the Risk Priority Number (RPN) of the factors that are the target of the study. Furthermore, from this value, the level of risk can be known from each factor. Thus, risk evaluation (priority risk to be controlled) in the solid waste management process is focused on the highest risk category. The results of this study can be a guideline for evaluating solid waste management in universities in Indonesia and other developing countries. Various developments to improve the results of this study need to be carried out that will be useful for future actions.
Potential growth of meliponiculture in West Halmahera, Indonesia
Authors: Salatnaya H , Widiatmaka  , Sumantri C , Kahoho S , Fuah A M
Published: December 2019

Meliponiculture is stingless bee’s beekeeping, developed in many countries, also Indonesia. Stingless bee produced honey with high value, wax, and propolis that used by humans, also to pollinate crops. West Halmahera, North Moluccas Province, Indonesia has potencies for the growth of meliponiculture, supported by natural resources that produced nectars and pollens to feed them, as well as resins for the nest and defenses. Land suitability has been considered in beekeeping. This research was conducted in West Halmahera. This paper aims to evaluate the land suitability for the growth of meliponiculture in West Halmahera. The method used was Multi-Criteria Decision Making. There are four (4) criteria used, which are: elevation, temperature, bee forage potency, and land use. These criteria were weighted by Analytical Hierarchy Process. The criteria’s weights, as well as sub-criteria scores resulted, were used to delineate areas that are suitable for bee in a model by using Geographic Information System. The result of the analysis showed that West Halmahera has 99% potencies for the growth of meliponiculture in various levels of suitability. The highly suitable (S1) area for meliponiculture is 26.46%, suitable (S2) is 59.46% and marginally suitable (S3) is 13.18%.
Factor affected adoption of combine harvester in Banten province-Indonesia
Authors: Siagian V
Published: December 2019

Banten Province received combine harvester (rice harvesting equipment) assistance since 2015 as many as 25 units. The purpose of this study is: 1) To find out the factors that influence the adoption of combine harvester (CH) in Banten Province, 2) Know the comparison of harvest cost efficiency with the use of CH and human labor. The sampling method used purposive sampling with 123 respondents. The analysis method uses a logistic regression function analysis. The results of this study are: 1) Factors that influence CH adoption are total land area, price of grain harvest, average human labor wage, and grain productivity. 2) The average cost of harvesting with human power is IDR 3,342,403 per ha, 177% higher than that of CH which is IDR 1,204,475 per ha. The number of harvest workers with CH averaged 5.4 work man day (WMD) while the manual method averaged 23.9 WMD (333.3% lower). Suggestions central and local governments need to provide training to improve the CH machine and the rules that prohibit CH from outside the province from participating in harvesting rice in Banten Province.
Combining Both ends of pipe treatment and cleaner production – A Case study of tofu SME in Bogor
Authors: Paramitadevi Y V , Resmeiliana I , Apriliani F
Published: December 2019

The implementation of cleaner production in tofu SME has limited challenges such as financial factors, a commitment of the owner and waste generation instead. To elaborate cleaner production with waste management by means end of pipe treatment, this paper was described identifying the process of cleaner production options, dealing with tofu SME’s owner and implementing significance options. The Goals of the paper were to choose the appropriate strategy for implementing cleaner production and to implement a wastewater reactor for organic parameters removal. Based on fuzzy AHP analysis, priority options were obtained, namely batch anaerobic reactor installation and workers training (0.336), both biogas installation and equipment maintenance (0.377) and continuous waste treatment plant and soybean machine’s grinding installation (0.287). The effectiveness of the biogas reactor after installed reaches 90% respectively, with the length of detention time fulfilling the design criteria of 12.4 days.
Factors that affect the behavior of shallot farmers in the use of pesticides in Brebes Regency, Central Java, Indonesia
Authors: Nining E , Syarief R , Machfud  , Sobir  , Mas’ud Z A
Published: December 2019

The using of pesticides in shallot cultivation in the Brebes Regency is very intensive. It can have an impact on health and the environment. Several factors influence the behavior of shallots farmers in the use of pesticides. The purpose of this research was to identify the dominant factors that influence the behavior of shallots farmers in the use of pesticides. Interviews were conducted on 228 shallots farmers in Brebes, Central Java, Indonesia. Information collected includes the behavior of farmers in the use of pesticides, the characteristics of farmers, agricultural facilities, and farmers’ knowledge of pesticides. Data analysis used Structural Equation Modeling (SEM) techniques. Based on the results of the analysis, that the behavior of farmers in the use of pesticides was influenced by the characteristic factors of 8%, agricultural facilities 26% and knowledge by 36%. The variables that have the most influence on the characteristic factors were the length of farming, the factor of the facility was the supply of seeds, and the factor of knowledge was information between groups. The dominant factor that most influences the behavior of farmers in the use of pesticides was the knowledge factor with the most dominant variable was the information between groups. Based on our study, it was revealed that effective counseling about the wise use of pesticides could be done through empowering farmer groups.
The land-based paddy food sufficiency model in Cirebon Regency West Java Province, Indonesia
Authors: Usman M A , Widiatmaka  , Firmansyah I
Published: December 2019

Cirebon Regency, which is one of rice production centers in West Java Province, has experienced the conversion of paddy fields to non-agricultural land. The conversion caused the decline in rice production, which automatically reduces its contribution to West Java Province. The objective of this research is to build a paddy food sufficiency model as a direction to develop food sufficiency in Cirebon Regency, West Java, Indonesia. Secondary data used were sourced from various reports and documents of relevant time series from several authorities, while primary data were obtained from research in the area. The model uses a dynamic system approach. The results of the study showed that in 2031, area of paddy fields which should be protected increased, the number of farmers decreases, food sufficiency decreases, the area of paddy fields decreases, and farmers’ income increases. The application of moderate or optimistic scenarios can reduce the area of paddy fields which should be protected, increasing food sufficiency as well as farmer’s income. The spatial analysis results in land which is suitable and available which can be defined to become sustainable food agriculture land through a review process of the official spatial land-use plan.
A stakeholder analysis of sustainable mangrove management in Kwandang, Sub-district of North, Gorontalo District
Authors: Melo R H , Kusmana C , Eriyatno  , Nurrochmat D R
Published: December 2019

Stakeholder analysis is a necessary step to design sustainable mangrove management. Such analysis was conducted to identify related stakeholders that involve in the initiative. The purpose of this study was to identify and map the stakeholders in sustainable mangrove management and describe their role and main duty. The research was conducted in Kwandang sub-district of North Gorontalo District. In this study, we found 13 stakeholders consist of 6 key players, 2 subject and 4 context setter. Stakeholder’s analysis is an effective approach to identify and map interest and power of each actor prior to designing a mangrove management program. The status of each actor can be used as an input for developing and designing the management system that can fulfill interests and needs of each actor. It will also ensure that the design can be actually implemented in the ground.
Multi-criteria Analysis for Determining Primary Commodities at Jasinga District, Bogor Regency, Indonesia
Authors: Mulya S P , Hikmah I N D M , Widjaja H , Widiatmaka
Published: December 2019

Multi-criteria analysis is the process of decision making, based on the exploration of many analysis. The use of multi-criteria analysis allows for fair decisions to be made. In this research, the multi-criteria analysis combines quantitative and qualitative data that can be used to determine primary commodities in a region. Besides, the commodities analyzed are only food crops and horticulture. The research aims to analyze primary commodities of village, land suitability and make a recommendation of primary commodities development in the Jasinga District. The methods used multi-criteria analysis with five parameters. They are Location Quotient (LQ) and Differential Shift (DS), land suitability, land rent, commodity economic analysis, and analytical hierarchy process. Furthermore, the results of the analysis are obtained through weighted index scoring methods, and then analyzed availability land and recommendation of primary commodities development. There are five primary commodities in every village at the Jasinga District likes chili, corn, rice, cucumber, and sweet potato. Existing land for primary commodities development is 10 634.3 ha. The direction of primary commodities development included existing, and new areas are 6 036.4 ha, especially for paddy field is 62.5 ha in Kalongsawah village.
Competition among actors and challenges of production forest management in Dharmasraya, West Sumatera
Authors: Mutolib A , Yonariza  , Rahmat A , Yanfika H
Published: December 2019

Management of production forest in Production Forest Management Unit Dharmasraya (PFMU), West Sumatra Province is very complicated. That is due to the many stakeholders involved in forest management and different interests. The research location was conducted in PFMU Dharmasraya and used a qualitative research approach. Data collection was carried out from January to April 2018 using key informant interview techniques. Data analysis used interactive models through three activity lines, namely: 1) data reduction, 2) data display, and 3) conclusion/verification. This study aims to see the interaction between stakeholders and the impact of competition of stakeholders on forest conditions in PFMU Dharmasraya. Results of research identified at least four stakeholders are directly involved in forest management in PFMU Dharmasraya. PFMU Dharmasraya as representatives of Government, Local community (Adat Community), the industrial timber plantation company (HTI), and forest encroachers who bought the forest from Local community/customary authorities. There are three types of interaction in the management of PFMU Dharmasraya, including cooperation, neutral, and competition. The result of the stakeholder competition occurred in the conflicts of forest ownership. Forest ownership conflict triggers each of the stakeholders to cut and claim the forest. As a result, deforestation occurred very fast in the last 15 years in PFMU Dharmasraya
Potentiality of the micro hydro power plant development based on local community capacity: Case Study in Paweden Village, Banjarnegara, Central Java
Authors: Suryanegara E , Rahma T R N , Munawaroh
Published: December 2019

Every year, electricity demand is always increasing, especially in Indonesia where the deficiency of electrical power plants still becomes an issue. Currently, it is necessary to find other alternative sources of renewable fuels that can be used as power plants. One of the solutions is through the development of Micro Hydro Power Plant. Furthermore, social feasibility related to the ability and willingness of the local community is important to be carried out to develop and manage the micro-hydroelectricity sustainably. This study used quantitative data collection techniques through surveys by questionnaires in Paweden Village, Banjarnegara, Central Java. Community capacity analysis is carried out through 3 indicators, such as human capital, organizational resources, and social capital. Spatial analysis is also conducted to find out the affordability of Micro Hydro Power Plant access to the local community. The results showed that the Micro Hydro Power Plant is sufficient to cover 95.87% of the entire Paweden Village area. Related to the electricity needs in Paweden Village, the electricity supply is still insufficient based on the local community opinion. Based on the survey, although the quality of human resources is still limited, the willingness of the community to participate in the development and management of the Micro Hydro Power Plant is considerably high.
Monitoring and climatic data use for rubber plantation management
Authors: Wijaya T
Published: December 2019

Climate is a resource for growth and crop yield of rubber and many other crops. Climatic elements are needed to be recorded and interpreted and used for agronomic management. In this paper, the use of climatic data for the agronomic management of rubber plantation is presented. El Nino and La Nina has been known and could be anticipated 3 months earlier so that dealing with drought and wet condition can be anticipated in the rubber plantation. Climatic elements would be easier to be recorded by the automatic weather station. The observed climatic data could be used for calculation of water requirement for irrigation in the nursery, disease prevention, tapping management, planting time and potency of growth by using crop models.
Environmental impact assessment as a regulation and equator principles as an initiative
Authors: Siregar M A , Utomo S W
Published: December 2019

The commitment to implementing environmental management is a key to reach the sustainable environmental in a development country specially in Indonesia. AMDAL (Indonesian term for Environmental Impact Assessment, EIA) as a regulation and Environmental Impact Assessment in Equator Principles (EP) as global initiative is a baseline in mapping the social, economic and environment figure at pre-construction, construction and operation phase. Social factors are the main thing to be secured which should be controlled based on existing guidelines, because it is relatively risky become a fatality. The paper aims to analyse the descriptive and comparative how are AMDAL and EP handling the environmental within the framework of partnership to achieve the ultimate goals that arise due to environmental factors, especially in monitoring and evaluation on development activities. The researcher finds there were gap in public consultation process between AMDAL and EP implementation. The results are expected to highlight the importance of adopting a comprehensive framework for a decision that places a detailed analysis of related the monitoring and evaluation within the broader legal and initiative context. Finally, it is expected that the condition of environmental sustainability reflected in Indonesia, based on at least both AMDAL and EP.
The ammonia release hazard and risk assessment: A case study of urea fertilizer industry in Indonesia
Authors: Danasa A S , Soesilo T E B , Martono D N , Sodri A , Hadi A S , Chandrasa G T
Published: December 2019

Ammonia is a raw material of fertilizer, refrigerant, and other commercial cleaning products which commonly stored in a large capacity. The higher storage capacity, the higher risk possibly occurs impacted to the population and environment. The study aims to provide a modeling of ammonia release scenarios, escape from the storage facility, Urea Fertilizer Industry X, located in Indonesia. This model is utilizing Area Location Hazardous Atmosphere (ALOHA) software to forecast the threat zone of ammonia release scenario and QGIS to overlay and spatial analysis. The result shows that the incident causes a significant impact on the area of 41.7 km2and potentially threatens a massive scale of the inhabitant with higher evacuation factor (Ef), lower affected population (Ap). The risk determined by estimated probability and consequence considered as high risk, therefore, besides the main aim of establishing an emergency response plan, this study could also be used as a reference in risk evaluation of chemical release.
Noise regulation of KRL commuterline in Indonesia: A critical review
Authors: Islam H , Soesilo T E B , Hasibuan H S
Published: December 2019

KRL Commuterline is an electric commuter rail system serving the area of Greater Jakarta, Indonesia, and operated by a subsidiary of state-owned enterprise. However, there are known shortcomings in the current noise regulation of KRL Commuterline. This study hence attempts to address the problem in question “Does the noise regulation of KRL Commuterline signify a switch to prevent growths of settlements around railroad tracks? or is it yet another policy with no clear scientific justification?” The question is addressed by conducting literature reviews on scholarly literature and applicable regulations related to noises produced by KRL Commuterline. This study seeks to determine policy insufficiencies in the ministerial decision (Kepmen) of the State Minister of Environment, Indonesia, no. KEP-48/MENLH/11/1996 on Noise Level Standards, the Provincial Regulation (Perda) of West Java no. 11/2006 on Air Pollution Control, the Act 23/2007 on Railroad System, and the Presidential Regulation (Perpres) no. 54/2008 on Spatial Planning for Jakarta, Bogor, Depok, Tangerang, Bekasi, Puncak and Cianjur. This study discovers losses suffered by residents living around railroads. Then, this work identifies critical points for a successful implementation of the noise regulation of KRL Commuterline to reduce the impacts of produced noise on surrounding populations.
Correlation analysis of the impact of land cover change and ratio vehicles on the dynamic of land surface temperature: case studies of Cirebon City, Province of West Java
Authors: Khafid M A
Published: December 2019

Global warming is causing an increase in surface temperature due to the depletion of vegetation and the increasing number of vehicles. In urban areas, an increase in temperature can significantly be degrading the urban heat island phenomenon, in the long run, it is capable of changing the microclimate. Surface temperature and density of vegetation retrieved from multi-temporal satellite remote sensing data. This research aims to analyze the effect of vehicle and vegetation ratio against the surface temperature in Cirebon town. This research utilizes data Landsat-5 TM and Landsat-8 OLI who validated with data on the MODIS period in 1998, 2008, as well as 2018. The interaction between surface temperature and density of the vegetation the spatial correlation analysis revealed through. Throughout the years 1998 until 2018 an increase in the surface temperature of 1.18 °C, which in follow with an increase in the number of vehicles at 142,171 unit for eighteen years and decrease in the area vegetation be 12,683 km2. The highest surface temperature is centered on CBD, port, congestion-prone areas, industrial zones, and terminals.
Conservation direction based on estimation of erosion in Lesti sub-watershed, Malang District
Authors: Pambudi A S , Moersidik S S
Published: December 2019

Management of watershedis a part of regional development. Lesti sub-watershed as one of upstream Brantas watersheds faces erosion problems and criticality of land that is not balanced with conservation efforts based on ideal needs according to carrying capacity of the environment. The reduced function of the Sengguruh Reservoir in upper Brantas River has caused a disruption to its role in flood control, water supply for irrigation and generating a large portion of hydroelectric power in East Java Province. This study seeks to provide the latest erosion-based conservation direction with MUSLE methods and spatial analysis of GIS that considers proportional social, economic and environmental aspects. The results of the analysis are used in order to determine the priority sub-districts for handling conservation within Lesti Sub-watershed to reduce erosion problems. Of the 12 sub-district on Lesti Sub-Watershed, some sub-districts identified as having the highest Erosion Hazard Level (TBE) area marked in red on the map are in sub-districtof Wajak, Tirtoyudo, Dampit, Sumbermanjing Wetan, Gedangan and Bantur. Environmental conservation directives are suggested to be focused on these 6 sub-districts through the application of vegetative soil and water conservation, technical civilization and combination involving the community and in accordance with local conditions.
Abundance and diversity of natural enemies related to chrysanthemum aphid suppression with botanical insecticides
Authors: Hutapea D , Rahardjo I B , Marwoto B
Published: December 2019

The botanical insecticide is one of the strategies to control insect pests in greenhouse pest management programs which effective against pests and selective to natural enemies. A plastic house study was conducted to evaluate the safety of botanical insecticide against natural enemies associated with chrysanthemum aphids. Two series concentration of neem oil insecticides at 3.0 and 3.5% was conducted to investigate the effect of calendar application on the abundance and diversity of natural enemies. The species abundance and diversity of natural enemies were determined by visual assessment, yellow pan trap and sweep net sampling. Based on the research result, there are sixteen species of Aphis gossypii natural enemies from 256 individuals belonging to 12 families under 8 different orders. The most dominant predator was Coccinellidae, Syrphidae and Hemerobiidae families. Coccinellids predator Menochilus sexmaculatus was found to be dominant with the high number of species. Neem oil insecticides did not affect abundance, and composition of natural enemies of chrysanthemum aphids, especially on Coccinellids predator. Therefore, neem oil-based insecticides can be a substantial contribution towards the preservation of biodiversity in plastic house ecosystem.
Basic properties and potential uses of 35 wood species from moluccas, Indonesia
Authors: Basri E , Yuniarti K , Saefudin
Published: December 2019

Molucca, a region which is located in the eastern part of the Indonesia Region, is a wet tropical forest type. The diversity of tree species in this area is high. Nevertheless, up to now, only a few species, i.e ramin (Gonystylus bancanus), have been considered to have high economic value which categorized as fancy wood for the imposition of forestry fees. This paper presents the results of the study of some basic properties and potential uses of 35 wood species growing in Molucca’s forest. The study was carried out by reviewing secondary data collected from related literatures intensively. The results show that of the 35 species, nyatoh putih (Pouteria duclitan), sesendok (Endospermum malaccense), nyaling (Mastixia trichotoma), and gopasa (Pouteria duclitan) have similar physical and mechanical properties, as well as decorative appearance with ramin wood. Therefore, these 4 species are considered as potential ramin’s substitute. The four species are also proposed to be included in the category of the fancy wood class instead of the ordinary mixed-species group. As a further impact, the imposition of forestry fees for the 4 species needs to be reviewed and readjusted.