bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effectiveness of Soil Conditioner for the Growth of Acacia Seeds in Dystropepets
Authors: Wulandari R S , Suryantini R , Latifah S 
Published: December 2019

Abstract

Acacia mangium is one of the vegetation that can growth on dystropepts, but its growth has not shown the right quantity and quality. This is caused by the deficient nutrient in dystropepts. To increase productivity can add soil conditioners. The purpose of this research was to obtain an effective soil conditioner for acacia growth in dystropepts. This experimental research using complete randomized design. Factors studied were K = Control, A= Bacteria 10 gr, B = Trichoderma 10 gr, C = Mycorrhiza 40 gr, D = NPK fertilizer 20 gr, and E = Manure 200 gr. Dystropepts soil used as much as 1,000 gr for each treatment. Each treatment is repeated 5 (five) times. The observation variables consisted of height and number of leaves. The results showed that the treatment of adding conditioner significantly affected the growth of acacia seedlings in dystropepts. The addition of trichoderma is the best treatment for increasing seedling height (3.0) and number of leaves (7.4). Soil conditioners from microbes and fertilizers are effective for stimulating the growth of acacia seeds in dystropepts.
The potential of Curcuma longa, Curcuma xanthoriza and Centella asiatica in Silvofarmaka System Based on Melia azedarach and Azadirachta excelsa
Authors: Arif M A , Hartoyo A P P , Wijayanto N , Ananda R W , Naufal H 
Published: December 2019

Abstract
Silvofarmaka system is optimizing land management by combining forestry plants and medicinal plants. The purpose of this research is to study the potential of Turkey (C. longa), Curcuma (C. xanthorrhiza) and Pegagan (C. asiatica) under Mindi (M. azedarach) and Sentang (A. excelsa) in the silvofarmaka system. There are 60 seedlings for each species planted under Mindi and Sentang under 5 years, and there is no shade tree as a control. We measured the diameter and size of the Turmeric and Curcuma rhizomes, and the number of Pegagan leaves. The results showed that the average diameter of Turmeric (9.225 cm) and Curcuma (15.125 cm) under the shade of the tree was higher than under the shade of the tree. The difference in growth may be due to the intensity of sunlight. Turmeric, Curcuma, and Pegagan can grow in the shade of light. While the intensity of sunlight in this study is low, namely 304,536 lux (without the shade of a tree), 63.45 (under Mindi), and 47.72 (under Sentang). This lower intensity of sunlight causes lower biomass (diameter and leaves). The medicinal plants need more light intensity to grow optimally so that further activities (e.g. pruning and thinning) are needed..
Vegetative propagation of Dryobalanops sumatrensis and Dryobalanops oblongifolia subsp. oblongifolia by shoot cuttings
Authors: Siregar IZ , Kustiyarini NF , Wati R , Rachmat HH , Siregar UJ , Dwiyanti FG 
Published: December 2019

Abstract
The existence of Dryobalanops sumatrensis and D. oblongifolia subsp. oblongifolia in Indonesia’s natural forest is increasingly threatened due to land use changes and illegal logging leading to the urgent need of conservation actions in the field. Vegetative propagation by shoot cuttings has been proposed as an alternative method, yet there have been still lacks of information regarding the suitable rooting media and the use of shoots from saplings as cutting materials. This study was to evaluate the survival rate, rooting and shoot sprouting abilites of D. sumatrensis and D. oblongifolia subsp. oblongifolia on two different media (mineral soil and peat). Saplings of the D. sumatrensis aged older than 7 years old and D. oblongifolia subsp. oblongifolia aged less than 2 years old were used as cutting materials. The results showed that the survival rate of D. sumatrensis in peat (43.75%) and mineral soil media (43.75%) was lower than D. oblongifolia subsp. oblongifolia in for peat media (54.55%) and minerals soil media (71.88%). The rooting and shoot sprouting percentage of D. sumatrensis in peat and mineral soil media was also lower than D. oblongifolia subsp oblongifolia. This pattern revealed that the media treatment (peat and minerals) did not affect the survival rate and rooting ability of D. sumatrensis shoot cuttings, but has an effect on D. oblongifolia subsp. oblongifolia.
The Carrying Capacity of Ecosystem Services of Mangrove Angke Kapuk Area, Jakarta Bay
Authors: Sofian A , Kusmana C , Fauzi A , Rusdiana O 
Published: December 2019

Abstract
Mangrove ecosystems have an important role and provide ecosystem services that support the surrounding life, but their existence gets to experience pressure and degradation continuously. This study aims to analyze the ecosystem services carrying capacity of Angke Kapuk Mangrove (MAK) Jakarta Bay. The carrying capacity of the MAK ecosystem area was analyzed by examining the condition of ecosystem services and the carrying capacity of the protected function of the MAK and surrounding ecosystems. The condition of ecosystem services refers to the carrying capacity (D3TLH) map of the Muara Angke Kapuk mangrove ecosystem Area, Jakarta Bay, P3EJawa KLHK, while the carrying capacity of the protected function refers to the 2014 Ministry of Environment (KLH) D3TLH Guidelines and remote sensing and GIS techniques. MAK ecosystem areas are mostly in the low ecosystem services category. The results of the analysis show that the carrying capacity of the protected area of MAK ecosystem in Penjaringan District is 0.32, which means the carrying capacity of the protected function of the region is categorized damaged. These results provide an overview of the challenges and threats that occur in the MAK ecosystem area so that it requires attention and strategic efforts in maintaining the sustainability of ecosystem services.
Distribution of Mushrooms in the Resort Cikaniki at Mount Halimun Salak National Park
Authors: Hasibuan R S , Jenuarista S T 
Published: December 2019

Abstract
Mount Halimun Salak National Park (TNGHS) is one of the conservation areas in West Java. One of the areas in TNGHS is Cikaniki Resort which has various mushrooms. Mushroom is one of the potential biodiversity that has been developed for various purposes such as food, medicine and others. The purpose of this study was to determine the potential of mushroom and the distribution of mushroom in the cikaniki resort of Mount Halimun Salak National Park. The method was line transect. The results of this study were that there were 50 types of mushrooms, 35 mushrooms known to the name of the species and 15 unknown names of mushroom which distribution to an altitude of 1638 masl. Mushrooms were used as food producers such as, Agaricus bisporus, Auricularia polytricha, Agarics, Auricularia delicate, and Tramella fuciformis. Mushrooms were used as medicines such as Ganoderma applanatum, Laetiporus sp., And Phellinus linteus.
Paludiculture: can it be a trade-off between ecology and economic benefit on peatland restoration?
Authors: Tata Hesti Lestari 
Published: December 2019

Abstract
Restoration of degraded peatlands has been taken into serious action in Indonesia. Paludiculture, which is defined as a cultivation on wet and rewetted peatlands, has been promoted as a solution of peatland restoration. The drained peatland should be blocked and rewetted to increase water table and reduce emission. While planted suitable plants and trees on wet and rewetted peatlands which have economic benefit is challenging. We conducted review and synthesis based on published and unpublished papers resulted from activities of peatland restoration in Indonesia, to show whether paludiculture may provide a balance of both ecology and economic benefits. Results show that rewetted on degraded peatlands reduces green-house-gas emission. However, few tree options for wet and rewetted peatland restoration which provides economic benefit. Tree selection usually based on specific site, price and market. Peatland restoration is complexs, therefore the paradigm of peatland restoration should focus on socio-ecological restoration first. Economic benefit will come later as both tangible and intangible economic benefits. Economic friendly schemes, such as REDD+ and rewards for environmental services (RES) may be more suitable as a trade-off in peatland restoration.
The Growth of Kapur Tanduk (Dryobalanops lanceolata Burck.) on Different Levels of Canopy Opening and Fertilization
Authors: Mardhatillah R , Pamoengkas P , Darwo  
Published: December 2019

Abstract
Critical land rehabilitation efforts in the forests areas are important activities to be undertaken. Dipterocarpaceae is a potential species to be developed in the restoration of degraded forest areas, one of which is Kapur Tanduk (Dryobalanops lanceolata Burck.). This study aims to determine the influence of canopy opening factor, dose of manure, and environmental conditions (temperature, humidity, slope, and soil conditions) to the growth of D. lanceolata in research plots (KHDTK Haurbentes, West Java). The results showed that the different levels of canopy opening (71.34%, 37.91%) and the dose of manure (0, 2, 4 kg / planting hole) have no significant effect either single or interaction both to the increase in diameter and height of D. lanceolata. The Different levels of canopy opening in both areas resulted that different responses in the early days of growth, the degree of opening of 71.24% (open area) had a good response to the diameter growth while at the level of opening of 37.91% (under the shade) had high growth rate of plants. Thus, until the age of 6 months D. lanceolata has a good adaptability to the degree of canopy opening in between 37-72%. The environmental conditions in the research plots in KHDTK Haurbentes are suitable with the characteristics of the growing species so it can support the growth of D. lanceolata.
Diversity of Arbuscular Mycorrhizal Fungi as Affected by Time Consequences Revegetation Age in Post Coal Mine Area at PT Berau Coal Tbk, East Kalimantan Indonesia
Authors: Salim M A , Budi S W , Setyaningsih L , Iskandar  , Kirmi H 
Published: December 2019

AbstractArbuscular Mycorrhizal Fungi (AMF)is one of the fungi that can be found in almost every ecosystem including post-coal mining land. This study aims to analyze the diversity of AMF in different age of revegetation of post-coal mining land area. Soil samples were collected from six different age of revegetation of post-coal mining area (unrevegetated area, 0, 2, 4, 6 and 8 years) and from natural forest as comparison. AMF spore isolation was carried out using wet-sieving method, while spore identification was carried out based on several morphological characters according to INVAM guideline. The results of the observation showed that with increasing of revegetation age will be able to increase the number of AMF populations (R2= 84.96%). The highest AMF population was found at the age of 10 years after revegetation of land with the number of 492 spores per 20 grams soil, while the lowest AMF population was found in unrevegetated area with the number of 12 spores per 20 grams of soil. AMF genera found included Glomus, Acaulospora, Gigaspora, Scutellospora, and Dentiscutata. Glomus and Acaulospora were the dominant AMF in every land revegetation age (100% of frequency). AMF populations was correlated strongly with soil organic content (r = 0.79).
The analysis of the influence of delay absorbing sequence on flight delay propagation
Authors: Wang Yutong , Zhu Jinfu , Liu Chang 
Published: December 2019

Abstract
Due to the connection between the flights, flight delay will be spread to the downstream flights via the flight string. Therefore, we need to take some corresponding measures to mitigate flight delay propagation. Firstly, based on the sequences of flight delay absorption by buffer time, the paper analyzes the law of delay propagation among different nodes from three different perspectives. Then, based on the random forest algorithm, the factors affecting delay propagation are sorted by order of importance, and the key influencing factors of delay propagation are obtained. Finally, through a case study of an airline’s flight operation data, some measures to mitigate flight delays are proposed from the perspective of adjusting buffer time.
Evaluation Model of Urban-Rural Transportation Integration Development Level
Authors: Yin Huanhuan , Zhao Zhu , Song Huiying , Su Yuanying 
Published: December 2019

Abstract
Promoting the urban-rural transportation integration, promoting the extension of public transport facilities to the countryside and the coverage of public transport services to the countryside, are also important measures to promote the construction of new urbanization and achieve a well-off society in an all-round way. The research on the evaluation of the development level of urban-rural transport integration can help us to understand the development status of urban-rural transport integration more clearly, which can promote and guide the urban-rural transport system to achieve coordinated development. By establishing the evaluation index system of the development level of urban-rural transport integration, this paper puts forward the evaluation method of the development level of urban-rural transport integration, objectively and accurately evaluates the development level of urban-rural transport integration, and provides theoretical support and basis for effectively promoting the development of urban-rural transport integration.
Aircraft Departure Fuel Consumption Improvement Model Based On Flight Data
Authors: Huang Qianwen , Zhang Ming , Liu Sihan 
Published: December 2019

Abstract
Accurate assessment of aircraft fuel consumption is an important means for airlines to reduce flight costs and control fuel emissions. By analyzing the actual flight data of QAR, the functional relationship between the aerodynamic parameters in the fuel consumption model of the departure climb phase is fitted, and the crosswind is added to the fuel consumption assessment model. Based on the analysis of the departure training of Qingdao Airport, the fuel consumption model of the exit climbing stage was calculated using the improved fuel consumption model. The results showed that the calculation accuracy of the wind tunnel experiment was improved by 3.6%, and the theory of the fuel evaluation experiment considering the crosswind was considered. The accuracy of the model calculation and QAR data is 93.3%.
Aerodynamic Load Characteristics of High-Speed Train under Different Wind Load Models
Authors: Liu Rong , Yin Zhiqiang , Chen Guang 
Published: December 2019

Abstract
In order to study the difference of unsteady aerodynamic loads of high-speed train under different wind load models, considering the assumption of uniform wind and the random characteristics of wind, the turbulent velocity field is generated by CDRFG method. A numerical model of cross-wind aerodynamics for high-speed trains was established by using STAR-CCM+, and solved by the IDDES method. The time history curve of fluctuating wind was transported into the computational domain as a function to calculate the computational fluid dynamics directly. The variation law and difference of aerodynamic load of high-speed train under two kinds of wind load models are obtained. With the increase of yaw angle, the maximum, average and standard deviation of aerodynamic load coefficient increase, and the coefficient fluctuation becomes more intense. The aerodynamic performance of the head car is the worst among the three cars. The PSD of aerodynamic load under stochastic wind is higher than that under uniform wind. With the increase of yaw angle, the corresponding PSD difference of aerodynamic load between stochastic wind and uniform wind increases, which indicates that the effect of pulsation is more obvious.
Evaluation and research on site selection scheme of high-speed railway station based on binary semantic combination weighting method
Authors: Li Xilin , Chen Long 
Published: December 2019

Abstract
Aiming at the site selection problem of urban high-speed railway station, the objective weight and subjective weight of indexes were determined by two methods respectively. These two methods were the binary semantic entropy weight method and the binary semantic AHM method. Then according to the combination of weighting based on the principle of minimum overall distance, the evaluation model of high-speed railway station site selection scheme was established. Finally the classical TOPSIS method was used to solve the problem. Taking Lanzhouxi railway station as an example, this paper verifies the rationality and effectiveness of the evaluation method, and provides further reference for the evaluation and decision-making of high-speed railway station site selection in other cities.
Research on the application of new energy pure battery powered ships in the Yangtze River
Authors: Jiang Lei , Ji Yongbo , Yi Yalin , Li Kui 
Published: December 2019

Abstract
The Yangtze River, as the busiest inland river in the world, has implemented more stringent ship pollution prevention regulations in recent years. The new energy pure battery powered ship has the characteristics of “zero emission”, low vibration and low noise. Therefore, it has quickly become a hot spot for the green development of the Yangtze River inland shipping industry. This paper analyses the application of key technologies of new energy pure battery powered ships, and summarizes the technical standards, economic investment, management regulations and other issues faced in the actual promotion process, and puts forward related suggestions.
Research on visual analysis technology and application of urban road data
Authors: Shao Ziyi , Lin Zhang , Hao Wu 
Published: December 2019

Abstract
Many cities use the current wealth of multi-source data to create intelligent transportation systems, which visually process road data so that traffic consumers and traffic managers can better understand urban traffic conditions. Due to the heterogeneity, complexity and mass of these data, it is not easy to conduct effective analysis on them, and it is often necessary to integrate human perception in the analysis process, so as to cause extensive application of visualization. In this paper, we first briefly introduce the pre-processing of urban trajectory data, then systematically analyze the visualization of two data types of road traffic flow and traffic events, and finally briefly summarize the research trend of traffic visualization in recent years and put forward corresponding challenges. The results show that the early research focused on the visualization of road flow, including the main arrow diagram, Mosaic diagram, track wall, etc. With the deepening of visual analysis, the analysis of traffic flow increases to the analysis of traffic events. In recent years, there has been a new trend of mining and utilizing the attributes or semantics of traffic trajectories or traffic events. The research on traffic data visualization has been greatly expanded in breadth and depth.
Research on Urban Interconnection Index of Transportation Card Industry
Authors: Fang Qiushui , Li Zhiming , Wang Zhen , Wu Jincheng , Leng Mengtian 
Published: December 2019

Abstract
In order to intuitively reflect the operation situation and forecast the future trend of the traffic card industry, and enhance the data support ability for the service evaluation of the traffic card industry. Referring to the relevant research results, this paper combines the operating needs of the card companies and the construction principle of the index system, and constructs the service index system of the card industry based on the big data of the card industry, which can be used to monitor the operation situation of the card industry and the service status of the bus trip. It can also be applied to the industry supervision, business monitoring and users. Travel service. Then, taking the traffic card interconnection index as an example, this paper evaluates the status and causes of the provincial traffic card interconnection by using the data analysis platform of Guangdong Province’s traffic card, and puts forward the prospects for the construction of the comprehensive service index of the traffic card industry.
Establishment of Residual Value Assessment Model for Electric Vehicle Based on AHP
Authors: Cao Xin , Yang Weimin 
Published: December 2019

Abstract
With the rapid increase of sales of new energy vehicles in China, electric vehicles begin to enter the homes of ordinary people. Like traditional diesel locomotives, electric vehicles will also face the problems of residual value assessment and recycling in the life cycle of products. Based on the traditional evaluation of used vehicles of internal combustion engines, combined with the unique factors of electric vehicles, this paper analyzed the substantial devaluation, functional devaluation and economic devaluation of electric vehicles, systematically sorted out the influencing factors of residual value of electric vehicles, and constructed the calculation model of residual value of electric vehicles by reset cost method and AHP analytic hierarchy process. At present, the scale of electric vehicle has not been formed in our country, the state has not yet promulgated the relevant evaluation criteria for second-hand electric vehicle, and the second-hand electric vehicle has not formed a market. Therefore, the calculation model deduced in this paper can not be verified by the market for the time being, but it has certain reference significance for the evaluation of second-hand electric vehicle.
Performance Evaluation of a Hydrophobically Modified Anti-Slide and Anti-icing Coating
Authors: Shen Fan , Wei Guosu , Pang Ruonan , Liu Feiyi , Fang Sifa 
Published: December 2019

Abstract
Two-component oil-based polyurethane and two-component water-based polyurethane were used as main raw materials, and a hydrophobic modified anti-slip snow coating was prepared by adding a sodium chloride modified snow melting agent which was subjected to zeolite-diatomite slow release treatment. The performance of the coating was evaluated. The viscosity test showed that the viscosity of the coating was 4200 MPa, which ensured the fluidity of the coating. The contact angle test shows that the coating has a contact angle of 99.2° and belongs to a hydrophobic surface. The friction coefficient and texture depth tested shows that the material has a friction coefficient and depth of texture up to 81BPN and 72.5mm. The research results show that the coating has certain hydrophobic ability, can hinder the road surface freezing, and can release the snow melting agent for a long time, prolong the ice-suppressing effect of the coating, and has good anti-sliding ability, which can ensure the safety of driving in r ice and snow weather.
Research on Joint Optimization of Airport Surface Based on Improved A* Algorithm
Authors: Liu Jinxin , Feng Sixu , Zeng Xiaoyu 
Published: December 2019

Abstract
Joint optimization of runway and taxiway will help increase the usage rate of airport’s existing hardware and software resources and ease flight delays. Firstly, the paper considers the relevant regulations of taxiing and the constraints of runway release interval, and takes the shortest total taxi time of each flight as the objective function to construct a joint optimization model based on the basic element layout of the airport. Secondly, the A* algorithm is improved for its characteristics and the actual situation of the airport surface, and the optimization model is solved by this improved method. Finally, taking Nanjing Lukou International Airport as an example, the optimal solution obtained by improved A* algorithm is compared with the actual running data to verify the applicability of the model.