bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adaptive reuse of local buildings in Sapa, Vietnam for cultural tourism development towards sustainability
Authors: Thi H L V , Nguyen T Q 
Published: November 2021

Abstract
Literature shows that adaptive reuse must consider vernacular architecture. For a tourism town like Sapa and its neighbouring villages in Vietnam, which is characterised with diverse terrain and climate conditions, adaptive reuse of housing regarding vernacular architecture needs to be addressed as sustainable local cultural values to attract tourists, especially foreign tourists. This paper, using data collected from 5 neighboring villages of Sapa, has investigated the villages’ residence characteristics, customs, and traditional house building designs styles and types of villages. A triangular approach of historical approach, systematic approach and the interdisciplinary approach has been adopted for the research to discover, consolidate and promote the values of village landscape and traditional housing. The proposed approach ensures villages retain their traditional indigenous state by building the image of traditional buildings encouraging concentrated living, and implementing concentrated tourism by village. Small sized areas can adopt small types of tourist accommodation. Both adaptation to climate and environmental change and adaptation to the deep intervention of technology in life need to be considered. The proposals will not only help protect the special values of Sapa, but also make good use of new development opportunities.
Connecting facilities of several modes of transportation with transit-oriented development approach
Authors: Agustina T , Eni S P , Ismanto R , Ulinata U 
Published: November 2021

AbstractJakarta is one of the cities in Indonesia that has a very high level of traffic jams. So it takes several alternative transportation so that congestion can be reduced. DKI Jakarta Provincial Government provides a solution by creating several mass transportation facilities including Mass Rapid Transit (MRT), Light Rail Transit (LRT), Soekarno-Hatta Airport trains, TransJakarta buses, and the Jabodetabek Commuterline. In order to make it easier for transportation users to use it, a connecting facility is needed so that it makes it easier for users to choose the mode of transportation. The research entitled Connecting Facilities of several modes of transportation with Transit Oriented Development Approach used qualitative descriptive method by collecting data from journal article, observation to research location, interviews with users. After the data has been collected, analysis is carried out in order to obtain a complete picture of characteristics and conditions that exist, so that a basic program for planning and architectural design of the Dukuh Atas Interchange Station building can be compiled. This research produces a design of connecting facility that integrates between modes to move users from one mode of transportation to another without leaving the station so that it is more effective and efficient.
Exhibition center design in Bekasi with a Hi-Tech architecture approach
Authors: Duha S D , Siahaan U , Simatupang S 
Published: November 2021

Abstract
Indonesia as a tourist destination has the opportunity to develop MICE tourism potential (Meeting, Incentive, Conference, and Exhibition). Globalization and regional autonomy provide opportunities and challenges for development in each region. Each region is required to develop all the capabilities that it has both the value of comparative advantage (competitive advantage) and competitive advantage (competitive advantage). Bekasi City is a city located in West Java, has the potential as a gateway for international trade in West Java. Especially with the construction of 4,000 manufacturing companies and 21,000 expatriates in Bekasi. With this potential, it is possible for Bekasi City as a trade and service node nationally and even internationally. The Exhibition Centre is a container that functions as a fulfilment of the need for MICE activities that combine the functions of meetings (meetings and conferences), exhibitions (exhibitions), and recreation (incentive travel). Hi-Tech Architecture is a design concept that is interpreted as a flow of architectural style that leads to the idea of a modern architectural movement that exaggerates the structure and technology of a building [1]. High-Tech Architecture is an indicator of developments in the world, both in the field of technology and architecture. Bekasi City is one of the cities that is developing in West Java Province. Therefore, High-Tech Architecture was chosen as an approach to planning and designing an exhibition center in Bekasi City as a symbol that Bekasi is a developing city.
Optimizing Empty Fruit Bunch (EFB) of palm and glass powder as a partial substitution material of fine aggregate to increase compressive and tensile strength of normal concrete
Authors: Siregar R A , Hutabarat L E , Tampubolont S P , Purnomo C C 
Published: November 2021

Abstract
As a material of construction, concrete have a good compressive strength but low tensile strength. From the previous study, reducing the tensile weakness of the concrete using empty fruit bunch (EFB) of Palm for the concrete mix have a significant result. But in contrary, the use of this fiber decreases the compressive strength of concrete. This research aims to optimize a mixture of glass powders on EFB fiber as a solution to increase the compressive and tensile in strength of concrete as well. The fiber material requires pre condition treatment which is soaked in 10% NaOH for 6-10 hours, then is followed with drying for 24 hours and finally cutting into 4 cm pieces long. Using glass powder as mix design with fiber material which is substitute for fine aggregate in concrete. Variation of 0.25%, 0.5%, 0.75%, 1%, 1,25%, 1,5%, 1,75%, and 2% fiber material mix up with 10% glass powder used for concrete specimens with a diameter of 15 cm and a height of 30 cm at the age of 28 days testing. The results of this study shows an increase in the compressive and tensile strength of concrete compare to normal concrete. The optimum compressive increase 21.02% of normal concrete which is 24.87 MPa. Meanwhile the tensile strength an increase of 31,78% of normal concrete which is 3,11 MPa using 1% fibre and 10% of glass powder. Hence, using glass powder mix in EFB to increase compressive and tensile strength of concrete can be developed optimally in the future.
Evaluation of road drainage capacity to improve optimized road performance in Kebon Pala Area East Jakarta
Authors: Hidayat R , Setiyadi S , Hutabarat L E 
Published: November 2021

AbstractRoad drainage function as important part that can control a large rainfall that caused puddles that often disturb the comfort of all community activities on the road. Condition of the drainage channel on the road Kebon Pala area, East Jakarta are not qualified due to mistake planning and lack of maintenance. Hence, it is necessary to evaluate the capacity of drainage channel on Road Perindustrian. The purpose of this study is to find the maximum amount of water flow that can be accommodated by drainage channels. Rain intensity was calculated using the Mononobe method, as well as the flow rate is calculated using the Rational method. The existing capacity of drainage dimensions are measured directly in the the field using Manning method for calculating flow velocity. The results obtain Q2yrs= 1.27mm/s, Q5yrs= 1.67mm/s, Q10yrs= 1.84mm/s, while Q channel 0.24mm/s. Thus, it can be concluded that capacity of road drainage channel is lower than Q rain that can not accommodate the existing rain flow.
Evaluation of the performance of high-rise building structures with plan ‘H’ shaped for earthquake with height increase (Case study: Apartment Urban Sky-Bekasi)
Authors: Nehe E , Simanjuntak P , Tampubolon S P 
Published: November 2021

Abstract
Currently, Bekasi City is developing into a residence for an urban, industrial center, and built apartments. One of them is the Urban Sky-Bekasi Apartment. This researched raises by an apartment as a case study to evaluate the performance of multi-story building structures as earthquake-resistant buildings. This researched conduct by add the original building height to 8 m (a basic height equals 102 m and a new height equals 110 m) to analyze whether the planning data made could still bear the same load with different heights and could still be categorized as earthquake-resistant buildings. From the results of the SAP-2000 output. The value of the basic static and dynamic shear forces in a 110 m building is always greater than a 102 m building in both the X and Y directions, this indicates that the taller a building is, the higher the design earthquake force used will be. The displacement in a 110 m building is always bigger than a 102 m building in both the X and Y directions. The weakest strength of the structure in a 110 m building is on the 29th floor in the X directions and Y directions, while the 102 m building is on the 26th floor in the X directions and 24 directions. It shows that with the addition of high SAP-2000 output data such as displacement, drift ratio, and other data after analysis shows that a 110 m building is categorized as an earthquake-resistant building according to SNI 1726-2012.
Simulation of passive filter design to reduce Total Harmonic Distortion (THD) in Energy-Saving Lamps (LHE) and Light Emitting Diodes (LED)
Authors: Susanto F , Silalahi E M , Stepanus S , Widodo B , Purba R 
Published: November 2021

Abstract
This paper discusses the design of a passive filter system for Energy-Saving Lamps (LHE) and Light Emitting Diodes (LED) using the MATLAB Simulink software. This type of lamp is a type of non-linear load that produces harmonics of current and voltage. However, this harmonic problem can be reduced using passive filters. To determine the size of the passive filter components, research was carried out in the form of measurements of power, power factor, voltage, current, THDi and THDv produced by the LHE and LED. The results of these measurements were simulated using MATLAB Simulink to determine the passive filter design that reduces the THD value on the LHE and LED. To reduce the level of current harmonics, a single tuned LC passive filter was designed. The filter, designed to work at a frequency of 50 Hz and is expected to reduce the level of harmonics in the 3rd, 5th, 7th, 9th, 11th harmonic orders so that the THD produced by LHE and LED meets the IEEE 519-2014 standards. The simulation results of single tuned LC passive filter design can reduce THDi by 46.78% from the initial THD of 84.55% so that it becomes 37.77%.
Reducing of total harmonic distortion using passive filter simulation to suppress harmonic currents with the case: General Hospital, Universitas Kristen Indonesia Jakarta
Authors: Elfando D , Silalahi E M , Stepanus S , Widodo B , Purba R 
Published: November 2021

Abstract
With the increasing need for and use of electrical energy amid increasingly rapid technological advances, especially in the use of electronic equipment in hospitals, it is necessary to pay attention to the problem of harmonics due to the use of non-linear electrical equipment. Therefore, it is necessary to measure the current and voltage THD for each non-linear equipment user. If the current and voltage THD values do not meet the standards, then a filter design is carried out so that the THD values meet the standards. Based on the results of THD measurements on the Main Distribution Panel (MDP) of RSU UKI, it was found that the THD of the voltage varied between 0.7877% - 2.4363% and the current THD varied between 5.3073% - 9.2363%. The measured THD value refers to the IEEE 519-2014 standard. If the THD value of the measurement results exceeds the IEEE 519-2014 standard, a harmonic filter is needed. With the simulated single tuned filter design, the current THD decreases within the standard value. The THD value of the current after installing the filter at the three MDP’s of the RSU UKI, namely MDP A of 1.72%, MDP B of 0.64% and MDP C of 1.30%.
Micro crack imaging of silicon solar cells with SEM (Scanning Electron Microscopy)
Authors: Gunawan W , Stepanus S , Lisapaly L , Mustari F , Sutomo H S 
Published: November 2021

Abstract
Both monocrystalline and polycrystalline silicon based solar cells are proven to be widely used in the photovoltaic industry compared to other solar cell material such as titanium oxide or germanium due to abundant materials and economical production processes, however the problem occurs due to internal (crack) defects in the silicon wafers. The cracks of silicon solar cells occur due to the manufacturing process or when applying them to the field in a relatively short time. Research was also carried out to determine the cause of the cracks and how much damage had occurred that affected the performance of silicon solar cells. By using SEM (Scanning Electron Microscopy) we will prove that, is it clear that the damage caused by production failure of external influences causes defects (micro cracks), holes, burns and so on. The advanced technology owned by SEM is expected to be reliable to find the location of the damage quickly and precisely because the result displayed are very accurate so that it is expected to be an evaluation for the solar cell production process in the future.
Fracture failure analysis on drive shaft component of diesel locomotive
Authors: Adiman A , Budiarto B , Siswanto S 
Published: November 2021

Abstract
Failure analysis is a systematic method of investigation to find the cause of the failure mechanism of a component or equipment. This research describes the fracture analysis of driveshaft components in a diesel locomotive. The drive shaft which is a connecting component around the compressor in the locomotive engine has failed. The methods used in this study include literature studies, visual observations, data collection, material characteristics through chemical composition tests, hardness tests, tensile tests, microstructure observations, fractographic observation, data processing, and analysis of test results. Based on the results of chemical composition testing and mechanical testing shows that the drive shaft is classified as plain carbon steel, specifically AISI 1025 steel. Visual observations and microstructure observations show that the driveshaft failure occurred at the connection part, which is the connection around the welded region. From the fractography results show a visible pattern of deformation plastic that showing the fracture occurred since the connection cannot bear the load given.
Effect of vacuum system on porous product defects and micro structures on the ADC-12 aluminum material with cold chamber die casting machines
Authors: Budiarto B , Kurniawan T D 
Published: November 2021

Abstract
Research on the effect of the vacuum system on porous product defects and microstructure on the ADC-12 aluminum alloy material with cold chamber die casting machine has been carried out. In the injection process in cold chamber die casting, the aluminum material commonly used is namely ADC-12. The ADC-12 aluminum alloy has better resistance to corrosion, is lightweight, has ease of casting, good mechanical properties, and dimensional stability. The purpose of this study is to compare the vacuum system with overflow system using ADC-12 aluminum alloy material with observed parameters are porosity, trapped air pressure, hot spot level, hardness level of Vickers Hardness, XRD analysis, and microstructure analysis with Light Optical Microscope (LOM). The results of the analysis using the Magma flow software, the vacuum system is better than the overflow system in terms of porosity and product yield, which is influenced by the amount of air trapped and the hot spot level. The level of hardness in a product with a vacuum system is better than a product with an overflow system. The average hardness in the vacuum system is 162,235 while in the overflow system is 147,615. Thus, the use of a vacuum system can increase the level of hardness in products by around 9%. With the change in usage from the overflow system to the vacuum system, it shows an increase in dislocation density followed by an increase in lattice strain and a decrease in the level of crystal size of the product.
Morphological variation in the interspecific hybrid of Acacia (Acacia mangium × A. auriculiformis)
Authors: Sunarti S , Milaba A , Adriyanti D T , Nirsatmanto A 
Published: November 2021

Abstract

Acacia hybrid is an interspecific hybrid resulting from crossing between Acacia mangium and A. auriculiformis either naturally or artificially. This study aimed to determine the morphological variation of artificial Acacia hybrid, obtained by full-diallel control crossing. Observed sample trees were clones at the clonal test, established in 2011 in Wonogiri, Central Java. Tree samples were taken by selecting clones categorized into the superior, intermediate, and inferior clones based on their growth at one year of age, with three different clones in each category. Parameters to be observed were morphological characters including quantitative (tree height, diameter breast height, bole length, phyllode length and phyllode width) and qualitative (stem form, stem straightness, bark type, bark color, phyllode shape, phyllode apex shape, conspicuousness of the main vein, and petiole color). The data quantitative and qualitative were then scored and analyzed using NCSS series 12 software for cluster analysis. The results showed that morphological characters of Acacia hybrid clones varied across the tree categories. Furthermore, the dendrogram showed that the characters of Acacia hybrid grouped into two clusters: Cluster A dominated by superior and most intermediate clones, and Cluster B dominated by inferior clones. The study result implies the use of morphological characters of Acacia hybrid to select the hybrid vigor in a breeding program.
Tamanu (Calophyllum inophyllum) growth performance on different types of degraded peatlands in Central Kalimantan
Authors: Leksono B , Windyarini E , Hasnah TM , Saijo  , Fahruni  , Maimunah S , Artati Y , Baral H 
Published: November 2021

Abstract
To achieve its national goals in climate and landscape resilience, including bioenergy production, the Government of Indonesia has launched an initiative to restore 14 million hectares of degraded land, including 2 million hectares of peatlands, by 2030. Here we present early findings on tamanu adaptability and tree growth (height, diameter and branches) on two types of degraded peatlands in Central Kalimantan. The paper reports peatland type and tamanu tree growth and adaptability in a 3-ha plantation trial plot over three years and a 2-ha plot over two years in Kalampangan and Buntoi villages. Results show survival rates of 82% in the plot on ombrogenous peat in Kalampangan and 81% on topogenous peat in Buntoi. Furthermore, the growth performance of 2-year-old tamanu trees on topogenous peat in Buntoi with an average height of 1.74 m and diameter of 3.97 cm at 5 cm above ground level and 15 branches was better than on ombrogenous peat in Kalampangan with an average height of 0.68 m and diameter of 1.43 cm at 5cm above ground level and five branches. While initial survival and tree growth results are promising, further monitoring of flowering and fruiting is necessary to determine tamanu’s viability for biodiesel production on degraded peatlands.
Growth diversity, heritability, and genetic correlation of 4-years-old of Alstonia angustiloba progeny test in Wonogiri, Central Java
Authors: Mashudi  , Setiadi D , Pudjiono S , Susanto M , Baskorowati L , Hendrati R L , Hidayati N 
Published: November 2021

Abstract

Alstonia angustiloba is a local tree species that have potential for community forest plantation; therefore, it is important to provide improved seeds. This study aimed to determine the diversity of growth, estimate the value of heritability, and the genetic correlation of the 4-years-old A. angustiloba progeny test. Randomized Completely Block Design with two factors (population and family) were used in this study. In this study, families are nested in the population. The population factors consisted of 4 levels, and family factors consisted of 43 families. The analysis of variance showed that height and stem diameter growth were significantly different between populations and families at four years old. The best height and stem diameter growth at the population level was obtained from the Pendopo population, 4.45 m and 7.71 cm, respectively. At the family level, the best height growth was obtained from 9 families (4.46-5.06 m), and the best stem diameter growth was obtained from 11 families (7.48-8.72 cm). The estimated individual heritability value for height was 0.41, and stem diameter was 0.23. Estimated family heritability values were 0.66 for height and 0.50 for stem diameter. The genetic correlation between height and stem diameter was 0.97.
Feasibility analysis of mangrove bio-ecosystem for silvofishery in Dabong Village, Kubu Raya District, West Kalimantan
Authors: Karlina E , Pratiwi  
Published: November 2021

Abstract
Studies on bio-ecosystems sustainability and feasibility are urgent because many mangrove ecosystems have been converted into ponds as a source of livelihood. This study aimed to evaluate the sustainability level of the mangrove bio-ecosystem in Dabong Village and formulate the most appropriate strategy in silvofishery development. The method used was a field survey to obtain secondary and primary data. Bio-ecosystem feasibility analysis was carried out descriptively, qualitatively and quantitatively based on data compilation of water quality, soil fertility, macrozoobenthos and mangrove density. SWOT analysis was used in developing the strategies. Based on the study results, the land suitability matrix for silvofishery development in Dabong Village had a very suitable category (69.00%) regarding soil value conditions and water quality. The abundance of macrozoobenthos was 21 individual m2 -1 gatropoda, 30 individuals m2 -1 bivalves, and eight individuals m2 -1 crustaceans. Stand density values of Rhizophora apiculata, Avicennia alba, and Sonneratia alba ranged from 15-25 individuals m2 -1, 18-27 individuals m2 -1, and 14-24 individuals m2 -1, respectively. According to ecosystem characteristics, the strategy for using mangroves in the research site was to increase the bio-ecosystem strength and minimize the damage or degradation risks as a threat to the impact of mangrove ecosystem utilization using the silvofishery model. Its application could be an alternative for sustainable use of the mangrove ecosystem.
The impact of white grub infestation on sengon plantation and traditional control by local communities
Authors: Darmawan U W , Lelana N E , Anggraeni I , Astanti F E 
Published: November 2021

Abstract
White grub causes severe crop failure in some sengon plantation areas. However, study regarding this pest on sengon plantations is still limited. Therefore, a survey to observe cultivation practice by local farmers in controlling white grub has been carried out in the sengon plantation area. An interview regarding the impact of white grub infestation and its traditional control methods was also carried out with the forest farmers group and the management officer of Perum Perhutani, State-Owned Forest Corporation, to observe the farmer’s knowledge regarding white grubs and their impact on the plantation. In addition, we also carried out sampling to observe the white grub population. The result showed that the average white grub population in the soil was extremely high. The average population was at 20.9 individuals plot−1 (13.6 larvae m2 -1) and dominated by 6-8 cm in length larvae. Therefore, planting failure is expected due to its attack. The local farmer controls applying marang, a rice bowl made of plastic with a small hole on all sides when planting the tree, and collecting white grub larvae during soil tillage, using light trapping. Application of marang was considered to effectively increase the success in planting activity by about 80-90%.