bluuebunny/crossref_metadata_2025_split huggingface dataset:
Food taboos and recommended foods for pregnant women: the study of phenomenology in pendhalungan society
Authors: Ningtyias F W , Kurrohman T 
Published: June 2020

Abstract
The citizens called Pendhalungan community live in the east area of East Java. It is an acculturation between the culture of Javanese tribe and Madurese tribe which lived in Jember District. This affects the consumption pattern for pregnant women. The purpose of this study is to identify the habits of pregnant women in Pendhalungan community in terms of food taboos and recommended foods. Taboo is a myth that is still believed by the inhabitants. They continue to apply the taboo without knowing a clear reason. This study used phenomenology approach to describe unique consumption patterns. Informants in this study were pregnant women. Collected data from January until August 2017 in Patrang, Arjasa and Sumbersari, Sub district of Jember District with Snowball Technique. The data collected is a type of food that is considered taboo and is recommended for pregnant women in the Pendhalungan community. Data analysis method in this research uses content analysis. In conclusion, food taboos in this community are types of foods that contain high protein such as shrimp, chicken liver, eggs and fish. They forbid food based only on myths, without knowing the benefits of that foods taboo. While the recommended foods in pregnancy are fruits and vegetables that are consumed in large portions.
An Assessment of Modes of Passenger Transportation in Beijing: Problems and Solutions
Authors: Zhao Haibin 
Published: June 2020

Abstract
The purpose of this study was to analyse the historical trends of various modes of passenger transportation in Beijing with respect to planning, policies, performance, and public behaviour based on statistical data. Using Beijing’s passenger transportation data since about 2003, the discussion addresses changes in (1) Beijing’s passenger transportation supply and demand, (2) population density, and (3) the apparent causes and effects of passenger transportation policy at various stages of policy implementation. The analysis revealed that budgetary shortfalls, air pollution, population density, and lack of governmental integration are persistent problems. Specific proposals for ameliorating those problems are presented.
Application of grey system theory in prediction of accident prone sea area
Authors: xi-kun Wang , yi-xin Wang , you-hao Xu 
Published: June 2020

Abstract
The GM (1,1) model is established by using the grey system theory,Realizes the goal that the accidents in the multi accident sea area can be accurately predicted by the prediction model. The key point is to establish the model correctly and apply it to the prediction of accident prone sea area. Looking up the sea area with the characteristic of frequent accidents, building the model, and testing the result of substituting the data into the model prediction, the result shows that the viewpoint of this paper is correct and can predict the maritime traffic accidents with high accuracy.
Establishment of criteria for determining preventive maintenance requirements of cement pavement
Authors: Qiqi Chen , Guanhu Wang , Xiaoyong Long , Jichao Lei 
Published: June 2020

Abstract
In order to obtain the criteria for preventive maintenance of cement pavement in military airport, based on the basic assumption of flatness-dynamic load interaction in the decay process of cement pavement, derivative inflection point is adopted. The method solves the relationship between the International roughness index (IRI) and the pavement damage index (L), and obtains the IRI critical value of the cement pavement when the L decay is the fastest. After the analysis and verification, the judgment standard of the cement pavement IRI is obtained. This paper analyzes the related research results of the preventive maintenance standard range of pavement condition index (PCI), summarizes and concludes the judgment standard of pavement PCI, and gets the PCI-L relation based on L-IRI and PCI-IRI relation, and finally gets the judgment standard of L. Based on the current situation that our army still mainly adopts the three-meter ruler for flatness test and a large number of measured data, a three-meter ruler average gap and a pavement IRI correlation relationship are established, which realizes the conversion between the two. Based on the current situation of less accumulation of performance test data of cement pavement in military airport, the damage condition and flatness data of several cement pavement in similar environment are fitted and analyzed by using the method of space generation time, and the specific parameters of the model are obtained.
Research on Vehicle Lane Changing Characteristics of Multi-lane Type Highway Maintenance Operation Area Based on Vehicle Trajectory
Authors: Yong Huang , Daqing Fang , Fuliang Tan , Minglu Tao , Daoguang Si , Yang Shu 
Published: June 2020

Abstract
Aiming at the safety problem of vehicle lane change in highway maintenance operation area, a survey plan for vehicle lane change traffic data based on the combination of drone and video materials was developed. The vehicle trajectory was collected to analyze the maintenance work of highways in different lanes and vehicle lane change characteristics in the zone. The research shows that when the number of lanes increases, the lane change distance of the forced lane change on the closed lane increases, and the distance between the starting point and the working area increases. The closer to the closed lane, the higher the lane change probability of the vehicle, and the vehicle trajectory is concentrated. The probability of free lane change in the pass lane, the distance between the start point of the lane change and the work area and the lane change distance increases with the increase of number of lanes.
Airport Rescue and firefighting Way in the 5g era
Authors: DaShuai LI , Ruifang Su 
Published: June 2020

Abstract
With the maturity of the fifth generation of mobile communication technology (5G), the new technology associated with 5G will have a great impact on the way of Rescue and firefighting in airports. Based on the development of existing technologies in the 5G era, the personnel in the aircraft Positioning technology, real-time scenario monitoring, measurement and data transmission technology for drones, real-time simulation and prediction technology of the aircraft fire situation, and the combination of remote fire hydrants and unmanned RFF vehicles will greatly improve the efficiency and success rate of fire rescue, and reduce the risk to fire rescue workers.
Current assessment and future projections of landing movement area capacity
Authors: Sandhyavitri Ari , Arifiani Wika 
Published: June 2020

Abstract
The significant shifting in the number of aircraft traffic volume of Kualanamu Airport, Indonesia at the magnitude of 510% in the period of 2017-2030. It was calculated that in 2017 the number of aircraft take-off and landing in this airport was 83,859, and in 2030 was projected to become 171,000. These study objectives were to evaluate the capacity of the existing landing movement in 2017 and to project the capacity requirements of this landing movement for 2030. Based on ICAO 2013, it was identified that the minimum runway length for the new runway for 2030 would be 3,666 m and the required apron area would be increased 780,000 m2 (twice times from the existing one in 2017).
Effect the silica sand percentage as subtitution of fine agregate on the concrete compressive strength
Authors: Nursyamsi N , Maulana I 
Published: June 2020

Abstract
This study uses silica sand, which has a high SiO2 content and micron size as a substitute for normal sand with control specimens with compressive strength of fc

′ 45 MPa. Two types of silica sand gradations were used, namely 80-100 mesh(0.177 mm – 0.149 mm) in size and 325 mesh (0.044 mm) in size from Bangka as the fine aggregate. There were 45 cylindrical specimens sized 15 cm in diameter, 30 cm in height, and age of7, 14, and 28 days. The tests carried out were absorption test and compressive strength test based on SNI 1974: 2011, which explained the testing method of the compressive strength of concrete with cylindrical specimens. Based on the test results, the optimum compressive strength was 53.07 MPa in the specimen with a composition of 50% sized 80-100 mesh (0.177 mm – 0.149 mm) (+) 50% sized 325 mesh (0.044 mm) silica sand, which can increase 4.12% of the compressive strength from normal concrete. On the other hand, the lowest compressive strength was obtained in a specimen with a composition of 25% sized 80-100 mesh (0.177 mm – 0.149 mm) (+) 25% size325 mesh (0.044 mm) silica sand, which was 48.43 MPa at 28 days.
Evaluation of paratransit performance as public transport in Medan City
Authors: Anas Ridwan , Kholis Hasibuan Ami , Bayu Endrayana Dharmowijoyo Dimas , Sembiring Irwan S. , Ariessa Dewi Rezky 
Published: June 2020

Abstract
Although bus comfort is a crucial indicator of service quality, existing studies tend to focus on passenger load factor and headway. This study examines the performance of paratransit in Medan city by using those criteria. The analysis is conducted using survey passengers onboard expressed as a percent of available seats and number of fleets required to operate a transport route for a given interval. The result showed there is significant gap in paratransit load factor from government regulation, and average headways of paratransit still fulfilling the level of services except for 2 operators which is National and Mars. Government intervention is needed to increase the service’s reliability of public transport.
Effect of compaction and direct shear test values on peat soil of Batubara Regency, Sumatera Utara Province
Authors: Roesyanto  , Rizki Eka Putri Vini 
Published: June 2020

Abstract
Peat soil is an organic soil and is usually found in low-lying areas where the water table is near the ground surface. The peat Soil has very large water reserves, high compression and has a low carrying capacity. This study aims to ascertain the index properties, to classify the peat soil classification according to ASTM 4427-92 (2002), to get the optimum water content and maximum dry unit weight by Standard Proctor test, and to analyze the shear strength of peat soil by direct shear test. The peat soil had water content (w) of 752.833 % and specific gravity (Gs) of 1.533. According to ASTM 4427-92 (2002), the peat soil was classified as high-ash peat with more than 15 % ash and as slightly acidic peat with a pH between 4.5 and 6.5. From the Standard Proctor test, the peat soil had an optimum water content of 37.235 % and 0.474 gr/cm3 maximum dry unit weight (γdmax). The Standard Proctor test increased the value of the dry unit weight (γd) of 0.169 gr/cm3 to 0.519 gr/cm3. The original internal friction angles (φ) and cohesion (c) were 0.885º and 0.015 MPa respectively while the Standard Proctor test resulted in 5.294º of internal friction angle (φ) and 0.023 MPa of cohesion (c).
Study of CBR (California Bearing Ratio) value on peat soil of Asahan Regency Sumatera Utara Province
Authors: Roesyanto  , Lestari T P 
Published: June 2020

Abstract
Peat soil is a type of soil within condition dominated by the litter of remaining plants which dead and rotten by nature so enrich with organic structure and water content in high concentration. This type of soil usually found in saturated water areas like swamp and basin. Called peat soil if organic structure content inside soil more than 30%, but swamp forests in Indonesia usually have more than 65% and more than 50cm depth. This research goal was to know the physical character (index properties) from peat soil and also the classification, to know the CBR (California Bearing Ratio) value of laboratory test and to know the CBR value after soaking the samples for 3 days. From this research it was found that peat soil from Pertanahan village, Sub-district Sei Kepayang Asahan Regency had 518.090% water content, 1.302 specific gravity, 3.672 void ratio, 0.454gr/cm3 moist unit weight, 0.098gr/cm3 dry unit weight, 45.032% ash content, 54.968% organic content, and it was classified as High Ash Peat. The peat soil had acidity pH of 4 and it was classified as Highly Acidic Peat with a pH less than 4.5. The CBR unsoaked value of peat soil was 6.750 % and the CBR soaked in three days was 2.800%.
Study on displacement and strain of concrete cubes using digital image correlation (DIC)
Authors: Putri Wijanarko Nadia , Arijoeni Essy , Okto Bangkit Sentosa Bastian 
Published: June 2020

Abstract
Digital Image Correlation (DIC) is a new, cutting edge technology employed the study full-field displacement of materials; concrete included. DIC uses the help of digital images that was recorded sequentially during testing period. There had never been a research conducted using the method in Universitas Indonesia using conventional tools. This research proves that such thing is possible. The component and steps to DIC are extensively discussed in the research; speckle pattern, method of record, images produced, and data computation. Through this research, the behavior of how displacement and strain were developed when concrete is subjected to compressive testing can be studied. The results of the research were analyzed quantitatively using the digital images and its computation based on computer software used. Additionally, provided that this was a preliminary research, there are many aspects and suggestions found from this research that will be applicable for future researches.
Integrated systems of major drainage and minor drainage towards low impact development
Authors: Siregar R I , Nursyamsi N , Indrawan I , Sembiring R A , Karolina R , Dewi R A 
Published: June 2020

Abstract
Many studies have been conducting in providing urban floods solutions to reduce runoff water in various ways. In developing urban areas equipped with drainage systems, where the channel has full capacity and flooding in some urban areas. One of the problems that can be identified is the condition where drainage has a peak flow load at the same hour leading to the same meeting point, outlet, or discharge, resulting in an increase of peak flow. This paper give an approach to how to integrate the runoff capacity of flow from minor drainage to mayor drainage for anticipating a peak flow in a particular area. The most important result was when high rainfall intensity started in the first hour, it should be no obstacles until the flow from minor drainage flow through the outlet towards major drainage, in the four hours after rainfall, peak flow happens to flow through study area. In the analysis, it is known that the peak flood discharge period of 5-yr and 10-yr returns is one hour after the rainfall. Therefore this will not happen when the flow from the drainage outlet has a travel time of under one hour or after 3 hours after rainfall.
Numerical study of damage index of 2d steel building with eccentrically braced frame using OPENSEES
Authors: Jonathan Victor , Orientilize Mulia , Okto Bangkit Sentosa Bastian 
Published: June 2020

Abstract
Measuring degree of damage of structure under an earthquake has been researched by numerous researchers since it is difficult to ensure whether the designed building structure could withstand. In earlier research, structural damage detection method used natural frequency to indicate damage. However, this method is not spatially specific, nor are they sensitive to damage. Thus, damage index is introduced as a tool to measure the damage in specific scale of zero to one. Among different types of damage index, Park-Ang damage index is used. Model of building structure that will be analysed is steel building with Eccentrically braced frame system. EBF system has extraordinary characteristics which has high ductility of dissipating energy and also sufficient stiffness to prevent from buckling. 2D model of EBF building with variation of number of story (one, three and five story) is identified regarding to behaviour, damage index and natural frequency. The behaviour of EBF building is identified by observing the monotonic and semi-cyclic pushover analysis. Damage index of EBF building structure is identified using OpenSees program. Furthermore, natural frequency that also measure degree of damage is identified using SAP2000. By determining damage index and natural frequency, the correlation between two can be observed.
Shear behavior of interlocking masonry brick wall portal with the substitution of Mount Sinabung volcanic ash against pushover static load
Authors: Karolina R , Syahrizal  , Handana M A P , Ramadhan P 
Published: June 2020

Abstract
Earthquake events produce a shear damage effect on the interlocking masonry wall brick in the form of diagonal cracks. This shows that there’s an influence of the resistance of the masonry to bear the shear force against the horizontal force in the direction of the wall plane caused by the earthquake. The purpose of this research is to determine the shear strength and crack patterns of walls against static loads and to utilize volcanic ash from Mount Sinabung as one of the constituent materials of interlocking masonry brick because the eruption activity of Mount Sinabung is also one of the most active in the world. The samples are in the form of a 3 m x 3 m wall surrounded by a 0.13 m x 0.13 m beam-column portal filled with interlocking masonry brick of 0.25 m x 0.125 m x 0.1 m with the optimum substitution of Mount Sinabung volcanic ash by 20% as a substitute for sand. Wall portal test was done by giving a pushover static load on the wall joint which refers to ASTM E 564-2003 to get the value of shear strength and crack pattern of the wall. From the static test results of interlocking masonry brick wall portal, the samples are able to accept a pushover load of 63931.2 N which results in an ultimate displacement of 35 mm with a crack thickness of 4 mm. The wall shear strength obtained is 21.31 N / mm. Based on the analysis of the equivalent energy elastic plastic (EEEP) curve, it is obtained that the elastic stiffness of the wall is 5905.88 N / mm and the wall’s yield load is 57237.55 N with the deviation of 9.69 mm. Failure of the interlocking masonry brick wall portal is a shear failure characterized by cracking like a ladder pattern on the wall. Based on the crack pattern that occurs, the wall portal is a type of stepped cracks shear failure.
Comparison of road inequality values using roughometer III and roadroid applications
Authors: Surbakti Medis S , Ginting Puja 
Published: June 2020

Abstract
Roads are essential in the development of an area, where driving safety and comfort are a measure of road construction. We can check road construction by getting an IRI value on a road segment. IRI (International Roughness Index) is the roughness index that most commonly obtained from measured longitudinal road profiles. Roughometer III and Roadroid applications are the tolls to collect IRI data. Roughometer III has more precision than Roadroid, but the Roughometer III is more expensive and more complex than Roadroid. This study tries to make a comparison of IRI values and their correlation between the Roughometer III and Roadroid. The results show that the comparison of IRI Roughometer III values and Roadroid Applications is slightly different. The linear correlation analysis of IRI values on Roughometer III and eIRI values on Roadroid is IRI = 0.8999eIRI + 0.5786 with a correlation level of = 0.8391.
Green campus concept based on architect perspective
Authors: Tamiami Fachrudin Hilma 
Published: June 2020

Abstract
The green concept is a part of a sustainable concept. The application of the green concept to buildings is an important thing to be realized. At this time, the university is trying to apply the green concept to the building and its environment. The application of green concepts on campus requires a large investment but many benefits can be obtained such as low maintenance costs and good environmental quality. This research aims to develop a green concept that can be applied to the campus based on architect perspective. The method used is qualitative with the technique of data collection is interviews with ten architects who have participated in green assistance organized by the Green Building Council Indonesia. The data obtained were analysed descriptively. The results of the study showed that the architect agreed on the application of green concepts to the campus both in the building and its environment. Some green concept indicators that should be applied are building, water conservation, landscape, energy conservation, transportation, waste management and education. The green campus can be realized if it is supported by the vision, mission, and regulations by the rector and gets support from students and staff in its implementation.
Design of heat exchanger (evaporator) type of staggered tube cross-flow as modified evaporator AC-split
Authors: Napitupulu F. H. , Fellix  , Sihombing H.V. 
Published: June 2020

Abstract
This study aims to make a tube group type evaporator design alternately with crossing flow as a result of modification of split PK 1 evaporator AC and to evaporate the working fluid, namely R-22, to environmental so that it also simultaneously cools the room. The evaporator designed has a length of 26 cm, a width of 16 cm and a height of 84.2 cm, with a tube diameter of 6.35 mm, a tube length of 58 cm and as many as 25 passes, consisting of 5 rows and 5 columns with alternating positions, distance between tubes 15 mm vertically and horizontally. With this design, the evaporator can absorb heat duty from the room of 813 W.
Effect of choline hydroxide catalyst in the production of methyl ester from crude palm oil
Authors: Manurung R. , Syabri D. K. , Bestari N. G. , Anggreawan M. D. , Risnaidi  , Siregar A. G. 
Published: June 2020

Abstract
Ionic liquids as catalysts are very potentials for transesterification reactions for biodiesel synthesis. Choline hydroxide (ChOH) has a better catalytic reaction than other ionic liquids because during the reaction takes a shorter reaction time and only requires a small dose of catalyst, the conditions required to produce biodiesel with very high yields. Determination of the optimum conditions for methyl esters resulting from the transesterification reaction of crude palm oil (CPO) using response surface methodology (RSM). The experimental design used three variables, the use of catalyst dose, the molar ratio of crude palm oil (CPO) to methanol and reaction time. Optimal conditions showed the highest methyl ester content was 99.45% at 60 ° C, the molar ratio of methanol: CPO 12: 1 and catalyst dose of 3% and a time of 60 minutes. The final product met the selected biodiesel fuel properties by European Standard (EN) 14214. ChOH showed high potential to be used as a low-cost, easy to prepare and high-performance catalyst for biodiesel synthesis.