bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rap-Tourism Method to Assess Tourism Objects Sustainability
Authors: Purwaningsih R , Santoso H , Khasanah U 
Published: January 2020

Abstract
Kampung Pelangi Semarang was originally a slum settlement that became artificial based tourism destination by City Government project. It has a positive impact on the tourist attractiveness of Semarang City. It is necessary to maintain its existence by evaluating the status of tourism object sustainability. The purpose of this research is to assess the sustainability status of tourism destination based on the sustainability index and provide recommendations for improvements based on the most sensitive indicators. Data processing used Rap-tourism method and multidimensional scaling (MDS) approach. This research using ordinal scale 1-5 with samples from stakeholders of the tourism objects. Sustainability status of Kampung Pelangi Semarang is a less sustainable category with sustainability index of 35.29. The index consists of four-dimensional value. The first is environmental dimension which has index 36.58 (less sustainable), the next is economic dimensions 32.40 (less sustainable), socio-cultural dimensions 35.15 (less sustainable) and institutional dimensions 34.65 (less sustainable). Improvement recommendations from each dimension are provide restroom facilities and water installation, training the community on the paper floral skill, organizing fishing festivals, provide information facilities related to mitigation of seasonal changes and risk of disaster threats.
Conceptualizing DFSS an analysis of 107 studies
Authors: Nurcahyanie Y D , Singgih M L , Dewi D S 
Published: January 2020

Abstract
The aims of this study are to capture the current state of Design For Six Sigma (DFSS) and to systematically review literature on practices of DFSS published between 2006 and 2018. The questions are: what is DFSS, the application, the essential ability, and limitations, the main trending topics of DFSS? All these questions are used to guide the search for journal in databases and other sources. Then, all relevant literature was reviewed and analysed. There were 18 topics found to be included in the review. The authors proposed two different issues relevant to DFSS. All these papers were interpreted by tools and techniques, such as the implementations of DFSS, its uses, applications, and how it is linked to other disciplines. Data was collected and clustered by year, topic, and keywords in DFSS to be used in configurations and progress improvement and innovation of DFSS. This review found four definitions of DFSS, eight applications and uses of DFSS, three challenges and obstacles in using DFSS, and two future direction of research of DFSS based on its fast-changing product design.
Impact Modeling of Bio-Textile Composite from Agave and Pineapple Leaf Fibers with Sandwich Structure
Authors: Subagyo A , Amin T M 
Published: January 2020

Abstract
The objective of this research is a comprehensive model is presented to study the deformation and damage to bio-textile composite from agave and pineapple leaves fibers under s mall projectile impacts. The approach dynamically follows the strain wave propagation along each individual yarn away from the impact point. As in previous work the mechanics of wave propagation is formulated in terms of impulse-momentum balance equations, which are solved at each fiber crosser using a finite different technique. Our approach explicitly considers the various projectile characteristics namely; mass, velocity and shape, as well as all fiber properties such as denier, modulus, and tenacity. Even more importantly the model allow to account for s lippage of yarn at crossovers and within the c lamps In previous work, slippage of yarn and fracture processes are described with a kinetic approach, which ex plicitly accounts for their dependence on impact rate. Results of model are in good quantitative agreement with publis h experimental data on s ingle ply and several plies biotextile composite. They also clearly indicate that yarn slippage through clamps often seen experimentally is responsible for some salient features observed in balistic.
Platinum Recovery from Spent CCR Platforming Catalyst with Oxalic Acid and Aqua Regia Leaching
Authors: Yuliusman  , Prawira L P D I , Nafisah A R , Amananti K S , Ayu M P , Isa M 
Published: January 2020

Abstract
In aligning to the rapid industrial development, the needs of catalyst nowadays are increasing. Oil and gas industry is one of the example especially in Continuous Catalytic Cracking Platforming Unit, in which the process produces Pt/Al2O3 catalyst waste approximately 2000-3000 kg/year and contains of 3200 ppm platinum metals. It becomes the reason why organic acid leaching and aqua regia leaching is needed to recover the platinum metals to save cost because its price is very expensive and spent catalyst waste is also considered as hazardous and toxic materials. In this experiment, there are two different methods used to obtain the recovery of platinum metals from spent Pt/Al2O3 catalyst. The methods used are leaching with oxalic acid and leaching with aqua regia. The experiment showed that leaching with aqua regia results in higher leaching efficiency percentage with the number of 19.917%. The result is obtained with operation temperature of 300oC and solid-liquid ratio of 20 g/L
Study on exergy efficiency of active desalination coupled solar collector
Authors: Naibaho Winfrontstein , Ambarita Himsar , Nasution A. Halim , Napitupulu Farel H. 
Published: January 2020

Abstract
In this work, a double slope desalination active with basin size area 1,932 m2 wide with 1 m2 glass surface with two pieces with 3 mm glass thickness and 15° glass slope angle. The water level from the bottom of 20 mm and with solar collectors size area 1m2 wide 500mm2 was tested for 8 days in August 2018 starting at 8:00 to 18:00. The exergy value from the calculation of the highest exergy value on the first day of testing at 12.00 is 225.238 kWh, the highest exergy value at the test of the second day at 17.00 WIB is 52.332 kWh, the highest exergy value at 13.00 WIB is 13.680 kWh, exergy value the highest on the fourth day of testing at 11.00 WIB at 6,734 kWh, the highest exergy value on the fifth day test at 12.00 WIB at 22.218 kWh, the highest exergy value on testing the sixth day at 15.00 WIB at 8.728 kWh, the highest exergy value on testing the seventh day at 17.00 WIB amounting to 8.33 kWh, and the highest exergy value at the test of the eighth day at 15.00 WIB amounting to 6.712 kWh.
FEM analysis of the HAZ temperature by heat source modeling on butt-joint process using msc marc mentat
Authors: Manurung Charles SP , Ambarita Himsar , Manurung Yupiter H.P. , Napitupulu Farel , Napitupulu Richard AM 
Published: January 2020

Abstract
This paper uses the Finite Element Method software to simulate the welding method, namely MSC Marc. The selected material is structural steel type C15 categorized as low carbon steel. The material has a thickness of 2 mm and butt-joint welding will be performed, which needs additional attention because welding is highly susceptible to distortion on thin plates. It can be seen that the simulation results against the sample SM 4PL Low have a lower temperature from the heat distribution data taken about 1 mm from the fusion line. Whether or not distortion happens on the plate is significantly affected. This information can be used to predict the real parameter of welding. However, it is better to ensure the best parameters; this data must be calibrated with the results of thermal distribution measurements through experimental methods.
The effect of used lubricating oil volume as a binder on the characteristics of briquettes made from corn cob and coconut shell.
Authors: Napitupulu Richard A. M. , Ginting Sibuk , Naibaho Waldemar , Sihombing Suryadi , Tarigan Nikodemus , Kabutey Abraham 
Published: January 2020

Abstract
The use of agricultural solid waste is one alternative source of energy substitutes, generally made into charcoal briquettes. In making charcoal briquettes, binder is needed to bind charcoal particles. In this study used vehicle lubricating oil was used as an alternative binder. Charcoal briquettes 600 mesh from corn cobs and coconut shell waste are made on the composition of raw materials of 75% corn coke charcoal, 25% coconut shell charcoal with a total weight of 100 grams. In each mixture, SAE 40 used lubricating oil was given with variations of 5 ml, 10 ml and 20 ml. Then each raw material weighing 16 grams was put into a mold measuring 2.2 cm in diameter and 6.33 cm high and pressurized by using a hydraulic press for 15 minutes until the briquette was formed. The results of the study showed that adding 20 ml of used lubricating oil gave the best characteristics of charcoal briquettes.
Experimental study of the prototype of acid gelugur solar dryer (Garcinia atroviridis) with air velocity of 1.5 m/s
Authors: Siagian Parulian , Setyawan Eko Y , Napitupulu Richard A M , Gultom Tumiur , Panjaitan Jusman , Simamora Vidya 
Published: January 2020

Abstract
A prototype of a constant flow type of Solar Gelugur Acid (Garcinia atroviridis) dryer using 2 racks was investigated experimentally. The aim is to explore the performance and characteristics of the prototype. A box of solar acid Gelugur (Garcinia atroviridis) is designed and made. In experiments the thickness of Acid Gelugur consists of 3 mm and 5 mm. The speed of heat flow sourced from the solar collector is 1.5 m/s. Prototype exposed to sunlight located in the city of Medan. The average solar collector temperature is 92.20°C, the drying box temperature averages 33.54°C, Gelugur Acid Moisture average 94.42%, and Ambient Temperature data measured System efficiency is analyzed. The results showed that with a flow velocity of 1.5m/s constant, the percentage of acid content in Acid Gelugur (Garcinia Atroviridis) with a slice thickness of 3mm was greater than that of 5mm with drying for 8 hours.
Simulation model of vertical water wheel performance flow
Authors: Setyawan Eko Yohanes , Djiwo Soeparno , Praswanto Djoko Hari , Suwandono Purbo , Siagian Parulian , Naibaho Waldemar 
Published: January 2020

Abstract
Potential renewable energy source that can be greatly utilized is the water flow, namely hydropower. The hydropower is one of the efforts to answer the energy crisis occurred in several regions due to lack of awareness to develop alternative energy. This effort will be done by designing a hydroelectric power plant. Before being made, it was studied using CFD simulation using Ansys Student Version 19.1 that was calculated based on flow assumptions. One model of the approach used is k-epsilon, with the initial flow rate of 5 m/s. By using water-liquid fluid material, the speed of water produced around the wheel is 2.19 m/s while the speed of water after passing the water wheel is 5.07m/s.
Design and fabrication of multipurpose organic chopper machine
Authors: Sucipto Agung , Kurnia Andryan , Halim Agus , Irawan Agustinus Purna 
Published: January 2020

Abstract
This study aims to design and fabricate multi-purpose organic chopper machine by utilizing local components. Research includes the design of construction, cutting tools and working mechanisms that are in accordance with user needs. The method used in this design is the most optimal component selection, strength analysis using structural analysis software, manufacturing and testing of product prototypes. The result of this study is a multipurpose organic chopper machine prototype with a capacity of 600 kg/h, able to cut organic waste to size ranging from 1 to 50 mm, and can be operated easily by the user. This result is one of the references in the development of the next multifunctional organic garbage counting machine. Keywords: design, multi-purpose organic chopper machine.
Implementation of first come first served in door leaf production scheduling
Authors: Tarigan U , Siregar I , Sari R M 
Published: January 2020

Abstract
In a production activity, optimum results can be obtained if all production activities in a good planning. Good planning can be done to make a scheduling. Scheduling as a decision-making process has an important role in various manufacturing and production systems and information processing environments. In this furniture industry each product goes through a production process with the same machine usage. The stages of processing the product using the same machine related to increase consumer demand and fluctuating indirectly causing accumulation and irregular product lead time. This condition certainly causes delivery delay of products to consumers. Therefore, a scheduling design is needed to minimize the total lead time in order to meet customer demands. The design is carried out using the First Come First Served method where the design was carried out based on the demand of consumer demand received. The results of the study using the FCFS method showsthat the makespan value is 2579,40 hours with the sequence of production product, namely job A-job B-job C-job D-job E-job F. Job sequence based on the demand in which the product first ordered will be done first.
Comparison heat transfer between finn solar water heater pipe and normal solar water heater pipe using cfd
Authors: Perangin-Angin Siwan E. , Ambarita Himsar 
Published: January 2020

Abstract
The development in the world of energy conversion has been progressing especially in the field of applying renewable energy resources related to the Sun. The application is not only in the world of industry but includes the smallest part or household. One application of solar energy resources is solar water heater. Solar water heater is a tool that utilizes heat from the collector to heat water flowing in tubes that are expected to increase the fluid exit temperature. In this study an increase in the efficiency of solar water heater is done by increasing the surface area of the pipe by adding fins on the side of the pipe which are expected to increase the temperature of the fluid out of the pipe that is plain or does not have fins. With the simulation method using CFD software obtained an increase in pipe exit temperature by 0.9%. this shows that in a part of a double-finned pipe, it does not significantly affect the increase in fluid exit temperature.
Application of physical attributes in underground space of MRT station in Jakarta
Authors: Novalia Irma , Herdiansyah Herdis 
Published: January 2020

Abstract
Physical attributes were taken into account when the underground space was built by considering the environmental aspect. Some Mass Rapid Transit (MRT) stations in Jakarta, Indonesia were in underground space with four main areas: transition area, corridor, main hall, and platform. By using a parameter review of architectural aspects in each of area, this study presented that environment-friendly conditions can be created by applying suitable physical attributes. Some aspects have gained from previous research and compared to the design of MRT Station. The result concluded that physical attributes hold important contributions in underground space design. Interconnection design with the aboveground in transition area will maintain humans’ perception when they enter a new underground environment. An artificial window can be simulated by implicating natural wall paintings or photographs. Color, covering system, and additional plants may create positive ambient to overcome negative feelings about a lack of ventilation and access way. some factors have explained previous research relevant to apply in current design which would benefit the future architecture of underground space.
Study of bolon house structure as a traditional Batak Toba house on earthquake force
Authors: Tarigan Johannes , Hutabalian Bandri , Nursyamsi Nursyamsi 
Published: January 2020

Abstract
Traditional Batak house is believed to be earthquake-resistant. Hence, the layout of the structure, the frame concept and also the earthquake force is calculated based on SNI 7973: 2013, namely regulations on design specifications for wood construction and SNI 03-1726-2012 regarding earthquake resistance planning procedures for building and non-building structures, especially the natural frequency ω of house, period T of house, floor displacement and shear forces V that occur. The traditional Batak house building was built long before the SNI 7973: 2013 and SNI 03-1726-2012 regulations existed. The traditional Batak Toba house studied was located in the village of Siallagan “Batu Parsidangan, Huta Siallagan”. According to mechanical properties of wood, the traditional Batak house has fulfilled the wood specifications based on SNI 7973: 2013 and the structural concepts have met the requirements of SNI 03-1726-2012. Calculation or analysis on the resilience of traditional Batak Toba houses against earthquake forces are carried out using software. It is found that the natural frequency ω is 12.697 rad/sec and period of the structure T is0.494 seconds. The shear forcesthat occurs due to the earthquake force V is 28.87 kN, the maximum floordisplacement from the traditional Batak Toba house is taken from the highest point, which is 4.01 cm.
Thermal conductivity of lightweight foamed concrete filled fly ash
Authors: Habsya Chundakus , Diharjo Kuncoro , Setyono Prabang , Satwiko Prasasto 
Published: January 2020

Abstract
Wall is the wider component of high-rise building to exposed the sunshine than roof. The building wall in tropical countries receives the solar heat all day and it makes temperature rise of its room and becomes less comfortable. Therefore, a wall with good thermal insulation is needed for buildings in tropical countries. Lightweight foamed concrete (LFC) can be used as a wall brick substitution as well as thermal insulator. The experimental research about LFC was investigated using FA and foam content to the thermal conductivity of LFC. The investigations were performed through the measurement of thermal conductivity, material density, and observation to the morphology of LFC surface. The LFC samples were varied in volume fraction of foam and FA in mortar. The result shows that the increase in volume fraction of foam in all variations of FA content decreases its thermal conductivity. In contrast, the increase of FA content in LFC results in an increase in thermal conductivity until 45 wt% of FA content, then it decreases as the addition of FA. Thus, the optimum thermal conductivity of the LFC was obtained by FA of 45 wt%. The relationship between thermal conductivity and LFC density shows that any increase in LFC density resulted in an increase in thermal conductivity. Otherwise, any decrease in LFC density resulted in a decrease in thermal conductivity.
The heat treatment of austenisation analysis of medium carbon steel to the hardness, microstructure, and tensile strength
Authors: Budiarto  , Dikki A.H. , Adiman  , Fajar Ochrandhy Danang 
Published: January 2020

Abstract
The research has been carried out on the effect of austenization process on hardness, microstructure, and tensile strength on carbon steel while SAE 1050 and SAE 1552. The aim of the study was to determine the tensile strength and hardness due to austenization process on motor chain components from medium carbon steel SAE 1050 and SAE 1552 The process of austenizing heat treatment at a temperature of 8500C and held for 40 minutes, then quenched into a temperature of 600C oil medium, then tempered at a temperature of 2600C for 60 minutes. The results of the hardness test showed that carbon steel was SAE 1552 experiencing an increase in hardness of 4.25% compared to SAE 1050. The results of SAE1552 medium cyron’s steel tensile strength test were 1781.04 N / mm2 and SAE 1050 1711.43 N / mm2, tensile test results SAE 1552 material is higher than SAE 1050. The results of microstructural observations show the formation of the martensite phase and the remaining austenite phase.
Study of biomass briquettes made from human feces
Authors: Fiza M. , Irvan L , Shalihin Ahmad 
Published: January 2020

Abstract
Problems faced by urban terrain are the lack of knowledge about the processing of fecal droppings. Revenues are only based on the results of the processing into fertilizer tin ja still less to be the right solution. Solutions that can be offered is the processing of waste into bio-coal briquettes using basic ingredients that keep piling up feces in the city. The purpose of this study is to introduce the public or partners Community Partnership Program (CRP) on the processing of bio-coal briquettes made from feces as an alternative solution to the problems faced by the community, and an alternative business potential that can be developed by government companies that deal with this water. The method applied in overcoming these problems is through counselling, training with demonstrations of bio-charcoal briquette processing, as well as coaching and mentoring into a product ready for market. The event was held on 12-14 May 2019 in the eastern city terrain sub district field. The activities consist of participatory extension coupled with the demonstration of processed briquettes of goat manure and pecan shells as well as packaging and testing the quality of the briquettes.
Design and simulation of rectangular patch microstrip antenna with inset feed for S-band application
Authors: Rambe Ali Hanafiah , Asri M Luthfi , Suherman S , Harahap Raja 
Published: January 2020

Abstract
Microstrip antenna is one of the most applied antennas for various radio applications as its low profile and high performances. This paper discusses design and simulation of the rectangular patch microstrip antenna (RPMA) for S-band radio by using inset feeding. Initially, theoretical calculation was performed, followed by performance evaluation by using AWR simulator. Inset deep iterations were conducted through repeated simulation adjustment to obtain optimal design. Based on the concluded simulation adjustment, the minimum achieved VSWR is 1.056 to get bandwidth of 104.5 MHz (3.1636 – 3.2681 GHz). The minimum return loss that can be achieved is -31.33 dB with gain of 5.777 dB.
Downlink ratio impact on downstream traffic performances on WiMAX
Authors: Simarata J H T , Suherman S 
Published: January 2020

Abstract
Worldwide Interoperability for Microwave Access (WiMAX) offers high speed data transfer with various quality of service (QoS) for different applications. One of the services is the downlink ratio adjustment. Theoretically, the parameter allows users to manage bandwidth for uplink and downlink direction. As there is no related work to proof this parameter adjustment, this paper examines the impact through network simulator for downlink streaming. With limited total capacity of the simulated network, by using 4 nodes with downlink traffics varied from 5 to 15 kbps, simulation proofs that by changing downlink ratio from 0.1 to 0.9, the downlink stream performance is increasing with delay decrement up to 5.34 ms, jitter decrement 9.1 ms and packet loss reduction about 97.62%.
Electrical peak load forecasting using long short term memory and support vector machine
Authors: Sadli Muhammad , Fajriana  , Fuadi Wahyu , Ermatita  , Pahendra Iwan 
Published: January 2020

Abstract
Electrical load forecasting is usually a univariate time series forecasting problem. In this case, we use the machine learning approach based on Long Short Term Memory and Support Vector Machine. Accurate the peak electric load forecasting. The time series or data set of the peak electric load recorded from the Substation system in Lhoksumewe, Indonesia. The main aim of this paper to predict and evaluate the performance of peak electric load at the substation for six months. The results obtained in the study, the LSTM and SVM are proving useful for peak electrical load forecasting. The resulting point both of machine learning technique based on LSTM and SVM are a possibility for analysis data for such purposes.