bluuebunny/crossref_metadata_2025_split huggingface dataset:
The comparative analysis of latitudinal changes in seasonal dynamics of the brightness temperature of the underlying surface in different natural zones of West Siberia
Authors: Romanov A N , Khvostov I V 
Published: December 2019

Abstract
The paper presents the results of studies of the brightness temperature of the underlying surface in different natural zones of West Siberia based on the daily data from SMOS (ESA). The effect of change in phenological phases of soil cover and vegetation in the Arctic desert, tundra, forest tundra and taiga on emissivity of the underlying surface is studied by the example of test sites adjacent to research stations of the Siberian Environmental Change Network (SecNet). We investigate the regularities and peculiarities of microwave radiation of the underlying surface in different natural zones of West Siberia depending on seasonal freezing and thawing of the underlying surface as well as on different physical characteristics of permafrost and seasonally frozen soils and vegetation.
Comparative analysis of the variability of the genetic structure of Anopheles messeae (Diptera, Culicidae) populations from Western Siberia and Eastern Kazakhstan
Authors: Abylkassymova G M , Wasserlauf I E , Sibataev A K , Stegniy V N , Andreeva Yu V , Sibataeva A M , Pervilyeva A V 
Published: December 2019

Abstract
A comparison of the species composition of anopheles mosquitoes from the East Kazakhstan region and the south of Western Siberia has been carried out. A comparative cytogenetic analysis of An. messeae larvae from the southern and central parts of the range was done. The tendency of displacement of the “south-eastern” genocomplexes from the center of the An. messeae habitat to its southern borders has been observed.
Spatial Heterogeneity of Bird Communities in the Natural Landscapes of the Southern Taiga of the Ob–Yenisei Interfluve and the Chulym River Valley (Tomsk Region)
Authors: Gureev S P , Nekhoroshev O G , Mitchell P J 
Published: December 2019

Abstract
The study area covers the Ob-Yenisei interfluve in the southern taiga zone of Western Siberia within the Tomsk region. On this territory in 2012, 2013 and 2017, the spatial heterogeneity of bird communities in the summer on routes stretching more than 350 km was studied. Thirty-nine habitats in the taiga, forest and swamp landscapes of the rivers and floodplains of large and medium rivers, as well as lesopolye landscapes of agricultural lands were surveyed. When analyzing the data, all of them are combined into 12 main types of landscape tracts, reflecting the diversity of natural conditions of the study area along the gradient from southeast to northwest along the Chulym river valley. Significant differences in population density, species richness and composition of the dominant bird species were established. In taiga and forest habitats there was a significant decrease in these indicators from north to south, which correlates with the overall productivity of cenoses and a variety of forest vegetation conditions. In floodplain intrazonal landscapes, spatial variability of bird communities is not associated with latitudinal differences, but is determined by such environmental factors as water encroachment onto territories, forest cover and population density within landscape tracts.
Seasonal dynamics of corvidae presence on the territory of the “Tomsk” airport in terms of ornithological flight safety
Authors: Kukhta A E 
Published: December 2019

Abstract
The study presents the results of year-round corvidae observations of aircraft dangerous to the aircraft in the airport. The annual dynamics of these birds’ occurrence were traced, their danger to aircraft was evaluated at different periods of the year and the reasons contributing to the increase of danger for aircrafts at certain periods were traced. The factors contributing to the corvidae presence on the airfield were identified.
Cryo-technologies of fish storage in the Arctic zone of Western Siberia: “lessons” from indigenous peoples
Authors: Lobanov A A , Fedorov R Yu , Andronov S V , Kochkin R A , Bogdanova E N , Kobelkova I V , Popov A I , Lobanova L P 
Published: December 2019

Abstract
The article presents traditional ecological knowledge of natural cryogenic resources (ice, snow, permafrost, etc.) for food preservation used by indigenous people, living in the Yamalo-Nenets Autonomous Okrug of Western Siberia. On the basis of ethnoecological approach and original fieldwork research, we analysed the construction of different types of storages for fish (“lednik”, ice cellar, “snezhnik”, and “merzlotnik”). As a result, we offered to adapt traditional ecological knowledge of indigenous people, living in the Arctic zone of Western Siberia, to developing new energy saving and eco-friendly technologies for preservation and transportation of fish, which could effectively use specifics of cryogenic conditions of the Arctic region.
Performance of biogas production from coffee pulp waste using semi-continuous anaerobic reactor
Authors: Widjaja T , Nurkhamidah S , Altway A , Iswanto T , Gusdyarto B , Ilham F F 
Published: December 2019

Abstract
The abundant coffee pulp waste can be used as a potential biogas feedstock due to its high cellulose and hemicellulose content. However, it contains lignin that difficult to be digested and caffeine and tannin that cause severe effects on microbial activity inside the digester. Therefore, alkaline hydrogen peroxide (AHP) followed by rumen fluid pretreatment had been performed to remove those compounds and improve digestibility of the substrate. Moreover, the study obtained to find the reaction kinetics in biogas production from coffee pulp waste using a semi-continuous anaerobic reactor with HRT 20, 25, 30 and 35 days and a working volume of 1.5 L operated at 37 °C. In this study, the AHP pretreatment resulted in 75% of lignin removal, 57.76% of caffeine removal and a decrease in tannin until 0.54%. The highest methane yield obtained in this study was 0.24 L CH4 g VS−1. The kinetic constants (k) obtained were; k1 (reaction’s kinetic constant): 0.2923 day−1; k2 (maximum rate of soluble organics production/degradation): 720.1309 mg SCOD L−1 day−1; k3 (saturation constant): 253.2091 mg SCOD L−1 day−1; k4 (maximum rate of TVA consumption): 1,426.0831 mg TVA-COD L−1 day−1; and k5 (saturation constant): 57,794.4025 mg TVA-COD L−1 day−1.
Peanut shells-based adsorbent for lead removal from batik waste with potassium hydroxide and nitric acid activation
Authors: Wardalia  , Adiwibowo M T , Rusdi  , Hartono R , Mandalika A 
Published: December 2019

Abstract
Due to its uniqueness, the demand for batik keeps increasing. Environmental issues arise due to waste from batik production and needs to be taken care of. Adsorption of lead content in batik waste has been done using peanut shells-based adsorbents with potassium hydroxide and nitric acid activation. The peanut shells were heated at 450°C for 2 hours and screened through an 80 mesh filter. Base activation was done by mixing the adsorbent with KOH 50% solution for 30 minutes at 180 rpm. For acid activation, a solution of nitric acid was used instead. It was done at 90°C for 2 hours. The potassium hydroxide-activated adsorbent offered the best performance, reached 99.93%. While nitric acid-activated adsorbents have worse performance than unactivated adsorbent.
Analysis of characteristics and parking needs in Sudimara station South Tangerang
Authors: Setiawati D N , Intari D E , Wulandari R D 
Published: December 2019

Abstract
The aim of this study was to know the characteristics of parking activity on weekdays and holidays, and also to know the parking needs at this time land the next five years. This study used survey method with primary data obtained through direct survey that recorded the vehicles that come out and enter the parking area, so it can be known the duration of the vehicles that were parked. The results of the study showed that both the north and south parking areas, with the highest parking characteristics, occurred on weekdays, where the north parking area has an area of 3,538 m2 with parking capacity for two-wheeled vehicles 314 SRP and four-wheeled vehicles 105 SRP and the south parking area has an area of 3,617 m2 with parking capacity for two-wheeled vehicles 137 SRP and four-wheeled vehicles 158 SRP. The current insufficient parking requirements are only two-wheeled vehicles in the northern parking area, it is 29 SRP deficiencies, while for the next 5 years, parking requirements based on the current parking characteristics for two-wheeled vehicles in the northern parking area still lack of 68 SRP and on the southern parking area still lack of 17 SRP
The application of cone penetration test direct method in Jakarta
Authors: Ridhani F A , Bahsan E , Ilyas T 
Published: December 2019

Abstract
There are several methods to estimate the bearing capacity of pile foundation using cone penetration test (CPT). Hence, it is interesting to evaluate which method that suitable for a certain location. In this study, 55 piles histories in Jakarta, which consisted of bored piles and driven piles, are used in order to determine the bearing capacity using the following methods: Schmertmann, de Ruiter and Beringen, LCPC, Aoki and De Alencar, Penpile, Price and Wardle, Philipponnat, and Wesley. The pile capacities will be compared to the measured pile capacities from the bearing capacity from loading test: static pile load test which interpreted by Chin method and Decourt method, and the results from PDA testing. The statistical analyses used in this paper are the best fit line, mean and standard deviation, and log distribution with 20% of accuracy. Result shows that LCPC method is the most suitable direct method used in studied location as it has the best agreement among the methods mentioned; the cone penetration test direct method is more suitable used for driven pile; and the safety factor for Chin and Decourt loading test interpretation methods are 2.7 and 2.57 respectively according to Wesley direct method.
Study of voltage stability on photovoltaic integration into Lombok power system
Authors: Budiansyah M A , Putra T , Aryani D R , Utomo A R 
Published: December 2019

Abstract
Photovoltaic (PV) is known as an intermittent energy source so that the impacts need to be calculated by the developer. In order to ensure the presence of PV does not cause the reliability of the system interrupted, developers are required to perform the stability study before the integration. In this paper, voltage stability study is done by using various PV capacities ranging from 5 MWp to 15 MWp in systems with a capable capacity of 90.79 MW using software ETAP 12.6.0. PV generation is set at the maximum site irradiance where power drop due to weather condition. The analysis shows the system stabilized in less than 50 seconds where the voltage disturbance does not exceed 10% for PV with a capacity of 5 and 10 MWp which is connected to a distribution network. Meanwhile, PV with a capacity of 15 MWp requires load release in order to regain stability.
Simulation of stand-alone floating photovoltaic and battery systems
Authors: Aryani D R , Khairurraziq T A , Ramadhan G R , Wardana N S , Husnayain F , Garniwa I 
Published: December 2019

Abstract
The implementation of photovoltaic (PV) system has been evolving all over the world as the alternative energy sources are getting more required. However, the construction of PV power plants on the ground would need a large space. In regions which are lack of sites for the ground PV installation, a floating PV system is one of the solutions. This study analyses the performance of floating PV in supplying power to loads with a battery as the energy storage in a stand-alone system. The system is simulated using small capacities of PV module, battery, and load, where all components are integrated using a solar charge controller to maintain a safe operation. The performance of floating PV is compared to the ground PV in terms of the capacity factor, conversion efficiency, and operating efficiency. The average of capacity factor and conversion efficiency of floating PV is 1.53% and 0.79% higher than the ground PV respectively. Meanwhile, in terms of operating efficiency, floating PV is 1.48% more effective compared to the ground PV. One can notice that the floating PV provides better power efficiency compared to ground PV as the cell temperature is maintained well in an optimal circumstance.
Increasing web server performance using the web balancing method
Authors: Saraswati I , Praptodiyono S , Pramudyo A S , Kurniawan  
Published: December 2019

Abstract
The high level of activity of internet users, which will have a negative impact on information providers. Requests from many users can cause performance capabilities on the web-server to decrease. The large number of requests results in crashes or overloads that have an impact on requests that cannot be served by a single server. Web balancing technology is needed so that the incoming request load is not only served by one server. Some scheduling algorithms that will be applied to web balancing testing in this study are round-robin and weight round-robin. In this study using ipvsadm as a means of making web balancing. This test aims to determine the performance of web servers when using web balancing technology by measuring the QoS parameters of web server services. The results show, the best value for measuring QoS parameters is respons time, request error, throughput, in the weight round-robin scheduling algorithm method.
Voltage profile improvement analysis during the loss of transmission lines on 150kv subsystem using static synchronous compensator
Authors: Ali H , Rahardjo A , Setiawan A , Jufri F H , Husnayain F 
Published: December 2019

Abstract
A Flexible AC Transmission System (FACTS) device which is Static Synchronous Compensator (STATCOM) is commonly use to overcome voltage instability issue. However, the implementation of the STATCOM may cause a voltage increasement within the allowable limits in all areas and maintain the voltage stability of interconnected system. Therefore, this paper proposes an optimum placement of STATCOM to maintain the voltage profile of 150 kV subsystem during the loss of the transmission lines. The proposed methodology is verified by using a 150 kV interconnected system where the loss of two 150 kV transmission lines may lead to a voltage instability in the entire interconnected subsystem. The results show that the proposed method can maintain the voltage stability in the subsystem within the allowable limits in all period.
Identifying aid items of survival kit for natural disasters
Authors: Sopha B M , Asih A M S 
Published: December 2019

Abstract
Incompatible aid supplies, in which received aid items do not match with the need of the victims, appears to be one of persistent problems in relief operations. The mismatch can be argued as the need of aid supplies may vary over time and the nature of disaster creates different need of aid items which are not available in standard survival kit. The purpose of the present paper is to empirically identify aid items that should be available in survival kit by considering time-after-disaster and the nature of disaster. A survey with a total of 120 respondents, was conducted in Bantul and Sleman districts where earthquake and volcanoes eruption have occurred respectively. The respondents were asked to rate the urgency level of the aid items during the first and the second week after disaster. Results indicate the time after disaster, the nature of disaster, and the culture are significant factors influencing the required items of the survival kit. Furthermore, the required aid items during the first week are significantly different than those during the second week after disaster. It is also worth mentioning that the type of disaster determines crucial specific aid items that should be provided in the survival kit.
A Simulation study of availability analysis on a chemical process industry considering spare part inventory
Authors: Salsabila N Y , Siswanto N 
Published: December 2019

Abstract
A maintenance strategy is an important factor in the production activities of the process industry. Since the process industry consists of many components, the failure mode is relatively complex. This paper observes one of the petrochemical companies in Indonesia which produces Pythalic Anhydride. The company is able to produce in 20.69 days every month. In reality, during 2017, the company produced 23 days every month on average. Production, known as the calendar day, which cannot achieve the target can affect customer service level. This research focuses on evaluating availability in order to minimize Mean Time to Repair (MTTR). One of the best strategies is to control the spare part inventory policy so that the spare part must be available when an equipment downtime occurs. We will use two modeling techniques to solve the problem: (a) reliability block diagram will be used to model the failure mode and (b) the simulation model will be used to model the entire system, including random variables and variable inter-dependency. After conducting scenario analysis by varying some parameters, the availability increased to 91.8% and average calendar days decreased to 22.64 days per month.
Minimize transportation cost with clark and wright algorithm saving heuristic method with considering traffic congestion factor
Authors: Kristina S , Jason  
Published: December 2019

AbstractBandung has more than 500 city parks that spread in 5 sectors which need to be maintained. As the department in charge of the city park watering, Diskamtam need to design their daily watering route and schedules to minimize operational costs. The watering route will be designed by using Clark and Wright Saving Heuristic method. By taking into account congestion factors, transportation cost can be minimized, and watering schedule can be developed. Trucks with the capacity of 5.000 litres will be assigned to water every 25 parks in the sector 2 route and the sector 4 route. This study find sector 2 need to be divided into five watering routes and sector 4 need to be divided into 4 watering routes. as a result, there is a 0.83% increase in operational cost. this is due to the congestion factor.
Fuzzy inference system for evaluating supplier in shrimp agroindustry
Authors: Herlina L , Machfud  , Anggraeni E , Sukardi  
Published: December 2019

Abstract
Shrimp agroindustry deals with processing raw shrimp into various frozen shrimp products. The production of frozen shrimp products are continuously produced based on consumer demand with uncertain pattern. To sustain this production, it is fundamental to enable supply of raw material to satisfy customer demand. Therefore, working integrated with suppliers to satisfy customer demand is a fundamental goal for shrimp agroindustry. A selection of suppliers in agroindustry is determined based on to three criteria, that are quality of raw materials, number of raw material arrival, and payment scheme. These criteria are used as a measurement to evaluate supplier performances by decision makers. To minimize uncertainty and subjectivity of decision makers when choosing suppliers, a fuzzy inference system method is proposed. The outcomes of the fuzzy inference system method are a set of rule base that is used to assess suppliers in shrimp agroindustry.
Analysis of replacement and selection of machines using dynamic program and AHP methods
Authors: Sutoni A , Gopar A 
Published: December 2019

Abstract
CV. Do’a Sepuh is a rice mill company. This factory often experiences problems in the cost of engine maintenance which increases every year. Therefore, planning actions must be taken in the form of replacement and selection of new, more economical machines. This study aims to make a model of engine replacement decisions to minimize the expectation of total costs, calculate the time (years) that is appropriate to make changes using the Dynamic Programming method. As well as making decisions on the use of new machines using the Analytical Hierarchy Process (AHP) method. Previously, a Focus Group Discussion I (FGD I) was conducted to determine which machines would be chosen and determine the engine selection criteria. Furthermore, Focus Group Discussion II (FGD II) was carried out to calculate the operating costs of new machines, revenue for new machines, the remaining number of new machines, and filling out questionnaires. The results obtained were the decision to replace diesel engines in the first year. The engine chosen, for the selected diesel engine is machine 1 (Yanmar TS 230 R).
Comparison of job shop production scheduling by using the non-delay method and the Heijunka method at PT XYZ
Authors: Kulsum  , Muharni Y , Pratiwi A S 
Published: December 2019

Abstract
The problem that often occurs in this company is the accumulation of orders at one time with a large quantity of products and human resources that are still relatively low can be one of the causes of delays in completing orders for customers. We using Non Delay Method and the Heijunka Method. Where, the Non Delay method is a method that does not let the machine idle if an operation can be started. While the Heijunka method is more concerned with equity in its production. In this study, scheduling using the Non Delay Method is better than using the Heijunka Method or using the existing scheduling method used by the company, because it can produce a faster makespan value. With this Non Delay method, to produce 3 Job 5 machines produce makespan of 3772.01 minutes smaller than using the Heijunka Method which results in makespan 3820 minutes. While the results of existing scheduling makespan only produce 3880.35 minutes.
The implementation of green lean manufacturing in small scale industry: Reduction energy waste and emission
Authors: Lintang S A , Harwati  
Published: December 2019

Abstract
This research basically aims to implement green lean manufacturing concept in a small scale industry. A green lean manufacturing is reached by energy saving and emission reduction. Current environmental Value Stream Mapping (VSM) is developed for Batik manufacturing process to identify wastes and bottleneck processes. Traditional process of producing batik raises several problems such as long cycle time and it emerges energy waste, excessive water consumption, emissions from combustion that can damage the environment. Based on all waste that was identified, solutions are suggested to eliminate the energy and emission produced. A future environmental VSM is designed, simulated, and compared with current VSM. The solutions decrease 3.9 of cycle time, 14% of energy consumption, and 63% of emission. This result showed that the solutions are applicable to be implemented in that small scale industry.
Productivity improvement of assembly department by using value stream mapping and computer simulation approach
Authors: Sulistio J , Hendradewa A P , Nabila A 
Published: December 2019

Abstract
As a matter of fact, productivity improvement is a common objective which are faced by almost every industry. Lean manufacturing is one critical key of success to achieve productivity by increasing effectivity and efficiency of an industry. A manufacturer which annually produces piano in a huge capacity has a target to improve the ability to satisfy its high demand. As a solution to the problem, this study focused on lean manufacturing design, specifically on assembly unit department. This study conducted by utilizing two methods, Value Stream Mapping and Computer Simulation technique as a system approaching tool. According to the problem identification stage using Current State Mapping, the productivity level on assembly unit department is only 0.27 unit/person/hour, still at below level of the productivity target 0.36 unit/person/hour. The problem indicates that there was many possible productions system matter, such as: production process input, which was not utilized in an optimum way, workload distribution that was not well-managed, and operator ability that is under specification. By using computer simulation approach, this study suggested couple of alternatives to answer the productivity problem.