bluuebunny/crossref_metadata_2025 huggingface dataset:
Risk Factor Recognition of Shield Tunnel Crossing Underneath the Existing Subway Tunnel
Authors: Wu Shangkun , Shi Jinjiang , Wu Jin , Li Lu , Jin Hui
Published: March 2021

Studying and controlling the risk factors of shield tunnel crossing underneath the adjacent existing subway tunnel will be of great significance for guaranteeing the safety of tunnel structure. Under the background of subway undercrossing engineering in Shenzhen, 3D finite element models under different working conditions were established using the theory of orthogonal experimental design. The disturbing impacts generated by newly built tunnel shield crossing beneath the existing tunnel to the existing tunnel were explored in consideration of different factors. Based on the impact degrees of different experimental indexes, the priority and weight of each index were determined via the analyses of range and variance in the orthogonal experiment. The results show that the clear distance and spatial angle between new and old tunnels, and soil chamber pressure exert highly significant impacts on the settlement of the existing tunnel structure; the maximum tensile stress of the existing tunnel structure is significantly impacted by the clear distance, spacing, thickness of overburden layer, and angle; the settlement value of the existing tunnel is extremely sensitive to the soil chamber pressure, with the impact weight reaching 24.9%, and the maximum tensile stress of the existing tunnel is sensitive to the change in the thickness of overburden layer: With the increase in the thickness of overburden layer, the maximum tensile stress presents a significant trend of progressive increase, and the impact weight reaches 19.25%. The study results will be of reference significance to the safety construction of shield tunnel crossing beneath the adjacent existing subway tunnel.
Study on the Layout of the Section from Yangtse River to Hongze Lake of the Second Phase Project of the East Route of South-to-North Water Diversion Project
Authors: Cheng Jianhua , Yang Wanhong , Yang Chenxia , Wang Kai , Qiang Chao , Ding Yanxia , Gao Zhifa
Published: March 2021

In the section from the Yangtze River to Hongze Lake of the east route of the South-to-North Water Diversion Project, the river system, irrigation and drainage system are complex, and the responsibility and power limits of the industry management and control are not clear. As a result, the layout of the water conveyance project in this section is difficult, and there is a large space for the optimization of the water conveyance scheme. In order to better realize the water conveyance task of this section (current water conveyance scale is 500∼450m3/s, and newly added water conveyance scale is 370m3/s), optimize investment, save land, form convenient management and control, and ensure ecological safety, in this research, the layout of the water conveyance project in this section is studied, and the Liaojiagou whole lake water conveyance scheme, the Mangdao River whole lake water conveyance scheme, the semi-special channel water conveyance scheme, the special channel water conveyance scheme, and the Sanyang River-Tonghe River water conveyance scheme are proposed. Five schemes are compared from the elements of environment, shipping, construction, management and economy, and the optimal scheme is determined to be the West Liaojiagou whole lake water conveyance scheme.
Calculation method of natural characteristics of beam element considering initial state
Authors: Cui Jiawei , Che Ailan
Published: March 2021

Natural frequencies and modal shape play an important role in the analysis of the dynamic characteristics of long-span bridges including wind resistance and seismic. The initial static load, which caused by overloading, etc., has a certain impact on the natural characteristics. Therefore, the initial effect of static load on the inherent characteristics of the beam is studied. The vibration control equation of beam with initial state is obtained by using the energy conservation equation and Hamilton principle. Under different boundary conditions, the analytical solution of the natural frequency considering the initial state, and the influence law of the initial static load and the height-span ratio on the natural characteristics are obtained. The results show that the increase in the deflection of the beam caused by the static load will increase the stiffness of the beam, and further lead to the change of the natural characteristics of the beam. Therefore, in the analysis of the natural characteristics of the bridge, the influence of the initial state caused by static load should be fully considered.
The use of non-ionic surfactants with different Hydrophilic-Lipophilic Balance (HLB) and their effect on flow properties in palm oil biodiesel
Authors: Azaria A P , Bethari S A , Nasikin M
Published: March 2021

The use of surfactants has been known to reduce the interfacial tension between the two fluids. Surfactants have Hydrophilic-Lipophilic Balance (HLB) values that vary depending on their function. Previously, the addition of the Sorbitan Monooleate (SMO) had succeeded in reducing the Cloud Point (CP) by 4.2°C and the Cold Filter Plugging Point (CFPP) by 2°C. In this research, two different types of nonionic surfactants were tried, named the Sorbitan Monolaurate (SML) and the Sorbitan Trioleate (STO), which have HLB values of 8.6 and 1.8, respectively. This research aims to prove whether these surfactants can improve the flow properties of palm oil biodiesel by reducing the interfacial tension. Each surfactant was varied in palm oil biodiesel with a content of 1 and 2% at room temperature (±27°C) for a month with every week observation. Then, it was tested using the flow properties parameters, which are the CP, Pour Point (PP), and CFPP. The FTIR analysis is also carried out to determine the interactions between MG and these surfactants. The addition of 1% SML caused escalation in the CP, PP, and CFPP by 3.2, 3.5, and 6°C, respectively. Meanwhile, the addition of 2% STO caused a reduction in the CP and PP by 0.5 and 1°C, respectively but the CFPP tended to be constant.
The study of palm kernel shell updraft gasification for supplying heat to an asphalt mixing plant
Authors: Pranolo S H , Waluyo J , Setiawan A , Hidayat H , Hati W P
Published: March 2021

Air-gasification converts biomass using air into combustible gaseous components which also known as producer gas. The combustion of those gases provides energy for any purposes. In an asphalt mixing plant, this technology is implemented using palm kernel shell as feedstock to generate heat for aggregate heating as a part of hot-mixed asphalt production. Both Cold Gas Efficiency (CGE) and Carbon Conversion Efficiency (CCE) are the common performance indicators of such process. This study examines a performance of an updraft fixed-bed gasifier to convert the shell into producer gas in supplying heat for increasing aggregate temperature from ambient to about 145 – 165°C at capacity of 800 kg/min. The feedstock flowrate was set at 990 kg/hour and equivalence ratios were varied at 0.04, 0.05 and 0.08. Because the gasification reactions were in equilibrium, the producer gas composition for calculating the CGE was predicted using thermodynamic model with minimizing Gibbs free energy. The feedstock and solid residue of the process were analysed to determine the carbon content for calculating the CCE. It is indicated that the performance of the gasification operation for supplying heat in an asphalt mixing plant is limited by operating conditions.
Height and width effect on brick masonry wall to defection through finite element analysis
Authors: Zega B C , Prayuda H , Rusdin D F
Published: March 2021

The wall is an important structure to protect the inside of a house or building. The wall also functions to carry and forward loads from the roof. Wall collapse can be a structural failure that can make people die. Therefore, it is necessary to do an analysis in the form of modelling to the wall that will be built to review the damage that can be occur. There are 3 types of the wall, which is 3 meters, 3.5 meters and 4 meters of width wall with variation of height and load direction. The walls are modelled using software STERA FEM. This research was conducted to see the pattern of wall damage and to determine the high effect on wall stiffness. The result from this research shows that the pattern of damage to the wall, press on the bottom right and drag on the bottom left to the load direction X, then press on the upper right and left angles to the load direction Y. The walls were tested using variations in height and width produce the same pattern of damage. However, the deflection value for each wall is different.
Compressive stress-strain behavior of concrete with artificial lightweight aggregates and steel-fibers
Authors: Wulandari M
Published: March 2021

Artificial lightweight aggregate used in the concrete mix is able to reduce the volume of concrete so that when applied to structural concrete it will reduce the weight of the structure. To be used in the structural concrete mix, the compressive strength produced must be able to meet the minimum requirements of structural concrete compressive strength. The addition of steel fibers to concrete with artificial lightweight aggregate can provide a good behavior change to its mechanical properties. This research was conducted experimentally which investigated compressive stress-strain behavior, the main ingredients used to make artificial lightweight aggregate were Styrofoam and acetone with the composition of 0%-100% of coarse aggregate and to increase the compressive strength of steel fibers by 0%-1.5% from the specimen volume. The specimen used was a 100×200 mm cylinder tested using a Universal Testing Machine, the output obtained was the value of stress and strain. The test results show that the stress-strain of the concrete increases with increasing steel fiber composition. Strain value increased by 23% from normal concrete strain. The compressive strength produced from concrete with a mixture of lightweight artificial aggregates and steel-fibers is able to reach the minimum concrete compressive strength requirements.
The bending capacity of box culvert for railway tracks
Authors: Patongloan Z , Irmawaty R , Muhiddin A B
Published: March 2021

The Trans-Sulawesi railway is a system of railway that was built to reach important areas on the Sulawesi island. In the construction of the Makassar-Parepare segment II railroad line between Barru-Palanro along a 45 km long many complementary buildings will be built, one of that is 26 underpass units/box culvert. This box culvert was chosen because the area between Makassar to Pare-pare often floods that can make the railway track will be disturbed. In addition, box culvert also functions as a crossing building. This paper aims to evaluate the bending capacity of the box culvert under railway track. Two box culvert precast concrete specimens with dimensions of 2000 mm × 2000 mm × 1000 mm with a wall thickness of 250 mm, and were given a monotonic static load. The bending test results obtained an initial crack load of 102 kN and 119.7 kN on BC-1 and BC-2 specimens, respectively. This initial crack load is greater than the crack load design (Pcrack) which is 76.8 kN. The loading is stopped at a load of 420 kN even though the specimen has not yet reached the ultimate load, due to device limitations. Nevertheless, the maximum load achieved by the two specimens exceeds the design ultimate load (Pult) of 227.2 kN.
Analysis slope stability of transmission tower 150 kV on moderately-cemented-sand due to soil excavation
Authors: Rasgianti R , Wibowo P A
Published: March 2021

T.66, transmission tower of 150 kV line Cilegon Baru – Asahimas was in high light for the threaten of slope stability because of soil mine excavation around tower area. Massive Excavation soil were occurring next to tower foundation, which is the depth approximately 14 m (height) and the inclination almost 80°. Therefore, analysis was highly needed to ensure that tower stand on stable spot. The method used in this research were study literature, soil investigation (deep boring and hand boring) and laboratory test for undisturbed samples, geoelectric test, and topography mapping. The type of soil was ‘moderately cemented sand’ slope. It has a complete characteristics and tends more challenging in determine the slope stability. By considering that, the data parameters input were approached in conservative way, which was considering literature and soil investigation data. In this case, slope stability was modeled with Finite Element Method (FEM) by doing back analysis. The result shown that tensile stress was relative small (near 0).
A dominant factor of human resources performance of construction management in supervising high rise building construction phase
Authors: Suryani F , Widiasanti I , Satrio D , Yunianto A , Mulyono T , Luthfiana Y
Published: March 2021

The percentage of human resources (HR) in construction that has a certificate of skilled labour is moderately low, which is less than 6% of the total human resources in the construction sector in Indonesia. The certificate can describe the ability, expertise, and competence of the certificate owner. Human resources’’ quality have an influence on project productivity so that project success can be achieved. Construction Management has an important role as an HR manager who will work on the project including HR who works as a supervisor of construction activities on the project. The purpose of this study is to determine the dominant factors affecting the performance quality of the Management Construction HR on supervising high rise building construction. This study uses quantitative methods with factor analysis. Collected data are primary data from Management Construction HR which collected from questionnaire. The results from this study are five factors that affect the quality of HR performance. Based on the five factors, the most important factor is technical skills factor.
Competency of surveyor in civil engineering
Authors: Iriani T , Widiasanti I , Haristo M , Lenggogeni L , Luthfiana Y
Published: March 2021

The purpose of this study is to analyse the competency of the surveyor in civil engineering based on Indonesian National Work Competency Standards. This research uses a descriptive qualitative approach with content analysis design. This research was conducted in three Vocational High Schools (VHS) construction and property engineering expertise programs in Jakarta. The results showed there were 28 competencies of the measurers with the content of knowledge, skills and work attitudes based on the Indonesian National Work Competency Standards.
Analysis of safety cost structure for electrical work in rental apartements projects in special capital district of Jakarta based on Work Breakdown Structure (WBS)
Authors: Fauzi A A , Latief Y
Published: March 2021

With the lack of rental housing needs still very large, the need for building rental apartments in the future is still very high. In the implementation of construction projects in Indonesia in general the number of work accidents also increased. The construction industry is a dangerous industry that often takes its toll. Referring to the Manpower Social Service Provider (BPJS) data, nationally the number of occupational accidents in the construction sector is recorded as the highest national sector work accident rate. Especially in electrical work, there are many work accidents during electrical work that endanger electrical workers. For this reason, it is necessary to make a simulation of SMK3 cost modeling in order to estimate the costs needed with minimum project information at an early stage. Activity-based cost calculation has emerged as a new approach that connects costs directly related to business activities with manufactured products. To make activity-based cost calculations, making WBS and determining work items appropriately is a useful effort and is needed for effective activity-based risk assessment. So based on the above findings, given the high plan of building rental flats, the high number of occupational accidents and the lack of comprehensive OSH funding, this study focuses on developing OSH costs for the electrical component work in rental flats in DKI Province. Jakarta-based WBS.
Adaptive thermal comfort in colonial building classrooms
Authors: Maknun J
Published: March 2021

The thermal sensation experienced by humans is a function of climatic factors such as air temperature, humidity, and wind velocity as well as individual factors such as the level of activity related to the body metabolic rate and the type of clothing worn. Moreover, adaptive thermal comfort assumes the occupants of a building are the main factors determining thermal comfort. The physical parameters measured showed the colonial classrooms buildings in State Senior High School 3 Bandung fulfill the thermal comfort standards. This was further established with the comfortability reported by most of the students to have experienced while conducting learning activity in the classroom.
Maintenance management of cultural Heritage School Buildings in Jakarta: An overview of Indonesian government regulation
Authors: Lenggogeni L , Ramadhan M A , Hadi W , Purnomo A , Resowijoyo M
Published: March 2021

Jakarta, as the capital city of Indonesia, has hundreds of cultural heritage buildings, including school buildings. Managers need to apply regulations regarding the maintenance of the heritage school building (HSB) as a preservation effort. The purpose of this study is to review the suitability of the maintenance management of HSB based on the Minister of Public Works Regulation No.24 / PRT / M / 2008 concerning Guidelines for Building Maintenance and Repair, and The Manual Maintenance Building Schools’ Book from the Ministry of National Education. The method used in this research is a literature review. Researchers obtain data from various sources, journals, books, documentation, and regulations relating to the research objectives. The result of the compatibility between Minister of Public Works Regulation No. 24 / PRT / M / 2008 concerning Guidelines for Building Maintenance and Repair and the School Maintenance Guidelines for the Ministry of National Education, is 54.17%. The two regulations do not provide complete information regarding the maintenance management of HSB. The government needs to adjust appropriate regulations related to the HSB as an effort to protect, develop, and utilize them in order to advance national culture.
Analysis of the green infrastructure implementation to the enhancement of environmental support capacity (Case study: Watershed outside University of Indonesia)
Authors: Negoro Y A T , Marthanty D R , Soeryantono H
Published: March 2021

The several things to fulfil human needs are water resources, like household, laundry, industry and agriculture, the activities that reduce the availability of ground water and produce waste which makes the quality of river water decrease. This research was conducted in a catchment area outside University of Indonesia which is included in the Ciliwung watershed area which aims to increase the carrying capacity of water resources by carrying out a Water Governance approach by considering 3 aspects Place, People and Policy. The Place aspect or technical recommendations was an approach using the concept of WSUD (Water Sensitive Urban Drainage), the green infrastructure used are bioretention and constructed wetland by using ArcGIS, GitBola and SWMM for simulations of improving air quality and volume of runoff water reduction. The People aspect or stakeholders are conducted in-depth interviews or snow ball interview with stakeholders and residents in the catchment to find out responses to green technology recommendations and stakeholder responses. The policy aspect makes appropriate policy recommendations that regulate the management of liquid and solid waste so as not to pollute water bodies, to improve the condition of catchments around University of Indonesia, making policy recommendations based on the technical aspects of green technology proposals, community or stakeholder responses and also based on existing policies or regulations from the central to the regional level.
Determining physical and operational factors influencing pipeline leakage location pattern in water distribution networks using spatial poisson point process
Authors: Nugroho W , Iriawan N , Utomo C
Published: March 2021

There are four pillars in leakage management strategy for water distribution networks, consist of pressure management, speed of repairs, active leakage control, and asset management. Leakage can be managed by applying the right combination of those factors in the right leakage management strategy. This study conducted in Malang City, East Java, Indonesia. The factors that influence physical water loss in the water distribution system are analyzed by focusing on the physical and operational parameters. The data in this study consist of spatial data and quantitative data. Poisson distribution in the spatial point process is used as the leakage point distribution approximation. From the analysis, it is found that the distribution pattern of pipeline leakage location is categorized as inhomogeneous poisson process, with two types of intensity area. Based on the results of parameter estimation, it is found that the high-intensity area is affected by time of repairs, pipe diameter, pipe length ratio, water supply ratio, and pipe deterioration ratio but not affected by the hydraulic energy demand. While the low-intensity area is influenced by pipe diameter, pipe length ratio, water supply ratio, pipe deterioration ratio, and the hydraulic energy demand but not affected by the time of repairs.
Schedule maintenance management system for HVAC system in restaurant: A review
Authors: Tingginehe B Y , Rarasati A D , Ichsan M
Published: March 2021

Many companies carried out business development to improve the company’s financial. A food and beverage companies need to carry out maintenance of their restaurant to keep all restaurant equipment in good condition. Maintenance have to be carried out with right methods and schedule to assure maintenance of restaurant equipment runs efficiently. One of the important components in restaurant is the Heating, Ventilation, and Air Conditioning (HVAC) system. This system aims to create a comfortable condition in kitchen and dining area of restaurant. Many restaurant’s HVAC systems found in bad condition and many companies do not have adequate scheduling management system. This study aims to find the base in develop scheduling management system for HVAC system maintenance in restaurant by reviewing journal about maintenance. This system expected to assist mechanics in maintaining HVAC system.
Green BIM potential in assessing the sustainable design quality of low-income housing: A review
Authors: Ekasanti A , Dewi O C , Putra N S D
Published: March 2021

This paper intended to investigate the potential use of Building Information Modeling (BIM) as an assessment tool that can evaluate and support optimization of sustainable design quality, especially for low-income housing or “Masyarakat Berpenghasilan Rendah” (MBR) in Indonesia. The consideration of sustainability aspects in the preliminary design phase is no longer a choice but a need for every stakeholder involved in the Architecture, Engineering, and Construction (AEC) industry. BIM here was developed to be the effective technology that supports all stakeholders in integrating the needs of sustainable building design through sustainable workflow which is also known as “Green BIM”. The first phase of this study is conducting a critical review of integration between BIM and Green Building Rating System for Home, including LEED, BREEAM, GBI, Green Mark, and GREENSHIP. Then it is followed by reviewing BIM implementation in the housing sector based on case studies in several countries. The findings revealed that there is a potential use of BIM for small-scale project especially to support the sustainability of MBR in Indonesia. Even so, there are also challenges to be considered, including financial support and incentives from the government in the effort of implementing this Green BIM approach.
Analysis of the tsunami disaster evacuation lane in Palu based on satellite imagery
Authors: Setiabudhi I , Rauf S , Adisasmita S A
Published: March 2021

Palu is one of the areas which frequently occurs earthquakes and has high seismicity which causes frequent earthquakes. This area has caused earthquakes and tsunamis which through the largest fatalities. The total number of 1,636 people who don’t have knowledge and information about safety areas or compilation of safe nodes evacuation lane for disasters. The purpose of this study was for analyze the location of safe nodes evacuation lane points from floods and tsunamis in Palu City. The analytical method in this study was used inaSAFE analysis with the open-source QGIS assistance program and complies with 7 indicators from safe nodes evacuation lane requirements. The location of this research was in Palu Central of Sulawesi, specifically a road around the coast and near the river that crosses the city of Palu. In this research, the results obtained 5 points that have planned based on EMBT indicators between 2 mosques, 1 field and 2 schools at level 5 of sea-level rise. The increased of sea-level at level 10 resulted in 36 points around 15 mosques, 6 fields, and 15 schools, then the rising sea level at level 15 there is 59 gathering points of 21 mosques, 10 fields, and 28 schools. For the evacuation lane it already mapping based on evacuation lane analysis, which average of two lane per node.
ICT-based e-learning implementation
Authors: Azmi C , Widiaty I
Published: March 2021

Information and Communication Technology (ICT) – based learning aims to promote lifelong learning. This study tries to implement ICT-based learning in collaboration with electronic heutagogy. Both web-based and non-web-based devices were analyzed. It was found that e-contents, massive open online course (MOOC), digital media, social media, web 2.0, and Moodles promote both fun and accessibility to their users. Some are even accessible through their smart phones so that they can use them anywhere they go. It is implied that electronic heutagogy - based e-learning using ICT is an effective choice amid the industrial revolution era.
The implementation of Smart Edu Family application
Authors: Fauziah S F , Jubaedah Y
Published: March 2021

The rapid development of technology requires people to adapt in almost every aspect of their lives, including their homes. This paper identifies the implementation of an application namely Smart Edu Family. The application is carefully analyzed in this study. The results had proven that the application was effective especially for supervising children learning outcome virtually. The fact that it is mobile (applicable in web-based, Android-based, and iOS-based devices) gives an advantage to people who belong to millennials and generation Z. It is also inferred that the application is relevant within the fields of industry and education.
Identification of technology-based mixed reality devices
Authors: Islami A R , Mulyanti B , Widiaty I
Published: March 2021

The purpose of this research is to identify technology-based mixed reality devices used in education. A variety of operating systems such as Windows, Android, and iOS used by the devices are reviewed in this study. It has been revealed that Hololens and HTC Vive are the most widely used devices, particularly in vocational education. Hololens mainly uses virtual reality (mixed reality) with a complete holographic computer. In the meantime, HTC Vive is a set of devices enabling its users to experience virtual reality. It is recommended that industry-driven education utilize those devices so that they are capable of adapting with industrial revolution 4.0.
Cyber Physical System vs Learning Factory: Perspective of industry 4.0-based curriculum development
Authors: Widiaty I , Ana A , Abdullah A G , Karyono T , Suciati S , Mubaroq S R , Martawijaya D H
Published: March 2021

The purpose of this study is to analyze the co-occurrence network of two main keywords in relation to the development of industry 4.0-based curriculum in vocational education. The research method used is bibliometric analysis which can produce information about the most appeared keywords in relation to the main keywords used as input analysis. The search results illustrate that some appeared keywords related to the keywords Cyber Physical System and Learning Factory are then selected into the five highest ranks. The keywords are learning factory which appear twice, industrial revolution 4.0, learning factories, and production system.
Digital psychology test with socio-technical system as an unemployment solution
Authors: Mubaroq S R , Abdullah A G , Setiawan A
Published: March 2021

Unemployment is a problem that is still hotly discussed. The problem of unemployment is very important because it has the potential to cause crime, social, political turmoil and poverty. One potential unemployment is from vocational education graduates. The cause of unemployment for vocational education graduates is the incompatibility of interest in vocational education graduates with job vacancies. This study tries to offer a solution with a socio-technical system approach. This research is focused on obtaining digital platform design in seeing the suitability of job seekers’ interests with their personalities. In other words, it connects Goal - People - Technology. The development of this system is done using the Flutter framework. The results obtained are a digital psychology test platform design, which is also cross-platform, in accordance with the concept of socio-technical systems. This platform can be used to minimize the interests of vocational education graduates with jobs.
Developing hybrid learning models platform based on user experience
Authors: Handayani T , Kalengkongan J , Marini A , Sumantri M S
Published: March 2021

This study aims to develop a hybrid learning model on the brightspace platform to be more user friendly. The hybrid learning model is one of the sophistication of internet-based technology that is a trend today and will be sustainable in the future. Almost every activity requires digital skills. Hybrid learning activities that can be used to discuss using online forum features. However, there is still a lack of hybrid learning models that lack interaction between instructors and students who use social aspects. This expertise arises in the brightspace platform that is used in the hybrid learning activities, therefore, it requires the development of communication features that exist in the activities and resources in the brightspace SPADA application in the form of video conferencing features for instructors and participants. The method in this research is research and development (R&D). Based on the application development offered, the video conferencing feature can answer the problems that have been discussed in the use of the brightspace platform from user experience.
Efforts to increase public participation in assessment information systems use User-Centered Design
Authors: Gatara A A S , Susanti E , Septiadi M A , Alia S , Wahyu F P
Published: March 2021

Web-based information services in government agencies have various types of designations, such as public information and as a means of assisting the government in making decisions. However, the environment may affect the community so that the ability to comprehend information and the desire to provide information is not optimal. There are information gaps, and the government has difficulty in getting information directly from the public. Therefore, technology-based information systems are important to study in order to reduce information gaps in government institutions. The purpose of this research is for the public to understand easily and increase public participation in the use of technology-based information services using websites. This study discusses the desired website information system in the government based on the User-Centered Design concept to support the successful use in the future. Using a qualitative approach, the focus of this study is the Assessment Information System in the city of Bandung. The results of the study show that there is a need for improvement in terms of design, content, and competent human resources so as to increase public participation and be more optimal in the use of such websites.
“Plants and their functions” e-module based on flip book
Authors: Hakim A R , Wadu L B , Chrisyarani D D , Safitri D , Hudha M N
Published: March 2021

The purpose of this research was to describe the development of E-module based on flip book. This research and development used ADDIE (analysis, design, development, implementation, and evaluation) Model. However, the researcher stopped at the development stage. The result of this developmental research is producing an e-module using the Ncesoft flip book Maker application. According to the evaluation from the material and language experts, the developed e-module obtained an average score of 80% and from the media expert, it obtained 84%. Thus, the developed media was considered “Valid”. The development of e-module based on Ncesoft flip book Maker can help children to learn Plants and their functions.
Effect of Edmodo to improve number sense
Authors: Rifai M R , Jihad A , Sugilar H
Published: March 2021

The aim of this research for knowing the improvement of student’s number sense by using Edmodo. This type of research used the experimental method with the pretest-posttest control group design the group. This study uses the quasi-experiment method with a tutorial model conducted on class VII students one of junior high school in Bandung City. The instrument used in this research in a test. The test is used to know the improvement student’s number sense. Data analysis technique of quantitative used N-gain and independent t-test. Based on the results of the research show that there is no difference of number sense improvement from students who get Edmodo and conventional learning and the improvement both are included in the low number sense improvement. According to the results of the research can be concluded that the use of Edmodo not appropriate to improve number sense.
Design of decision support system for business feasibility study using SMART method
Authors: Septiana Y , Sofiah E , Mulyani A , Setiawan R
Published: March 2021

The business feasibility study is critical to be used as the main foundation to avoid and prevent the occurrence of unwanted risks related to losses in businesses run by business people in the services, trade, and manufacturing sectors. Through a business feasibility study, business actors will get an initial description of the feasibility or inadequacy of a business plan to be implemented, so that businesses get a prediction of decisions about the business to be carried out. Utilization of information technology in terms of business feasibility study decision support systems will help businesses to improve quality, productivity, efficiency, effectiveness, minimize risk, and solve business-related problems that will be run. This research aims to design a business feasibility study decision support system to assess the feasibility of implementing business in services, trade, and manufacturing. Decision-making method in a decision support system designed using Simple Multi Attribute Rating Technique (SMART), where the decision making criteria is based on economic feasibility studies with several predetermined attributes, namely Break Even Points (BEP), Net Present Value (NPV), Internal Rate of Return (IRR), Average Rate of Return (ARR), Benefit/Cost Ratio (B/C Ratio) and Payback Period (PP) and Profitability Index (PI). The results of this research are in the form of a business feasibility study decision support system that can be used to assess the extent of the benefits that can be obtained in carrying out business activity and is a material for consideration in making a decision, whether to accept or reject a planned business idea measured by benefits to be received, both financial and social benefits.
Detection of natural disaster victims using You Only Look Once (YOLO)
Authors: Sarosa M , Muna N , Rohadi E
Published: March 2021

Natural disasters are events that cannot be predicted both by location and time of occurrence. Natural disasters cause property losses and can even take lives. The handling of rapid evacuation must be done by the SAR team to help victims of natural disasters to reduce the amount of loss. But in reality, there are many obstacles in the evacuation process. Starting from facing difficult terrain to necessary equipment limitation. In this research, a system designed to detect victims of natural disasters uses image processing where the picture is carried out using a drone that aims to help find victims in delicate or vulnerable locations when reached directly by humans. Based on this background, this research proposes the development of a method for the detection of victims of natural disasters that aims to assist the SAR team and natural disaster volunteers in searching for victims who are in hard to reach places. The You Only Look Once (YOLO) method is implemented using the python programming language related to image processing. From the research that has been done, the accuracy result of detecting objects of disaster victims is 89%.
Classification based on K-Nearest Neighbor and Logistic Regression method of coffee using Electronic Nose
Authors: Prehanto D R , Indriyanti A D , Nuryana I K D , Permadi G S
Published: March 2021

Coffee has its own scent of identity which can be felt directly with the ability of the human sense of smell. With a specific coffee aroma that can be used to identify the type of coffee. In this study we propose that E-Nose (Electronic Nose) can be used to identify coffee based on the aroma of coffee converted into value data used for the classification process. The initial step is the data validation process using the calculation of the average value, standard deviation, Minmax. After conducting the dataset validation process, the next step is to implement the Logistic Regression (LR) and K-Nearest Neighbor (KNN) classification methods. The accuracy value is derived from the Confusion Matrix evaluation method, TP, TN, FP and FN values. This study focuses on finding the best classification accuracy value with the criteria having the highest accuracy value. This system can be used to classify types of coffee with a mixture of coffee and milk. This study will compare the results of classification using the two classification methods. Based on the results of the accuracy of the two methods presented the best results using the KNN method with a statistical calculation is 97.7%.
3D animation modelling using After Effect in biogeochemical cycle study to develop cognitive activities
Authors: Susanti D , Rahmat A , Amprasto A
Published: March 2021

The biogeochemical cycle is material that uses diagrams and is difficult to understand. Cognitive activity has a contribution in building understanding when studying a diagram. The purpose of this study was to obtain information about 3D animation modelling using after effect in biogeochemical cycle to develop cognitive activities. This research is a descriptive study. The model in this study is the biogeochemical cycle animation model using adobe after effect. Cognitive activity is measured before and during the study using a modelling example. All verbal data that appears is recorded and analysed according to think-aloud protocols (TAPs) which will then be translated and categorized into types of cognitive activity. The results of this study indicate that before using the modelling example the activity of activating the initial knowledge (K11) included in the high category. There was a development when study using modelling examples, namely elaboration (K41) most appeared with a high category. This study can be concluded that the 3D animation modelling using after effect can develop high-level cognitive activities, namely inference accurately (K31) and elaboration accurately (K41) in the biogeochemical cycle.
Handwritten recognition of Hiragana and Katakana characters based on template matching algorithm
Authors: Septiana Y , Mulyani A , Kurniadi D , Hasanudin H
Published: March 2021

Japanese has become one of the most popular foreign languages in Indonesia. From a survey conducted by The Japan Foundation in 2017 shows that Indonesia is the first largest student in Southeast Asia, therefore those interested in learning Japanese are quite popular in Indonesia. One of the things learned in Japanese is about writing Hiragana and Katakana characters, each of which has 46 standard characters. The research aims to implement a template matching algorithm for handwritten recognition of Hiragana and Katakana characters, which can later be implemented in application design for learning Hiragana and Katakana character writing. Through the application of template matching algorithm, the accuracy level of handwritten recognitions pattern matching reaches 89.8%, so the algorithm will be very suitable if implemented for Hiragana and Katakana characters writing learning applications.
Development Presensi PTI based on android with Quick Response code
Authors: Rahadian D , Hamdani N A , Gunawan R H , Bariyah S H , Purwanti Y
Published: March 2021

Presensi PTI (PTI Presence) is an android-based application with the use of QR Code which can be used as a record of the attendance list of students in each lecture that is carried out by the schedule and contract of college and student lectures. The purpose of developing this application is to provide a more effective, efficient, and accurate presence system according to the facts. The process of making this application uses the waterfall method which starts from the analysis, design, coding, and testing of functional suitability, performance efficiency, portability, and usability. The results of application testing on the characteristics of Functional Suitability, Performance Efficiency, and Portability with a percentage of 100% which means the application is good. As for Usability, it can be said that the application is feasible to use with a percentage of more than 70%.
Expert system for diagnosing narcissistic personality disorders using certainty factor and forward chaining methods
Authors: Uriawan W , Manaf K , Syaripudin U , Mujiburrahman M
Published: March 2021

Narcissistic disorder originates from the Greek legend Narcissus, a young boy who falls in love with his reflection in a pond. Personal with this disorder has a purpose with interests that are not reality, excessive, the nature is known as grandiosity. People with narcissistic disorders expect others to praise and follow their desires and requests and a narcissist is less sensitive to the needs of those around him. Research associations of the All India Institute of Medical Science which results in a period of six years, there were 259 people worldwide died with a percentage of men 72.5 percent and women 27.5 percent due to selfies due to excessive narcissism. The method used is Certainty Factor and Forward Chaining as an inference engine to determine the diagnosis results based on the prescribed symptoms. Calculations in this method combine the measure of increased belief and measure of increased disbelief values obtained from the expert and also classify the narcissistic personality disorder so that this expert system helps the user to find the level of narcissism that matches the user’s experience and obtain the value of trust and recommendations for handling narcissistic personality disorders.
Coding skills improvement through management blog on the internet
Authors: Wibawa B , Kusumah W
Published: March 2021

Coding skills be equipped junior high school students to create a simple application. This study aims to improve the management skills of coding through blogs on the internet. The methodology used was action research. Students are trained to make the coding of what she likes and masters. Algorithms and programming introduced in writing. Computational thinking is delivered in the form of text, photos and videos that attract students learn coding. Also made games and quizzes online. The results showed that the coding skills of students increased through management of blogs on the internet. Junior high school students become better able to create a simple application program.
The utilization of Adobe Pro DC in retrieving information of Sundanese interpretation
Authors: Khaerani I F S R , Riyani I , Darmawan D , Busro B , Sutisna M R R F , Kurnia A
Published: March 2021

Sundanese Translations and Interpretations are translations and explanations of the Qur’an using Sundanese language and compiled by mufassir originating from the Sundanese region, which existed since the 1900s. Recently, the Sundanese Qur’anic interpretation is hard to find since most of the book is no longer being reprinted. As a result, the Sundanese young generation hardly recognizes this valuable heritage. This study aims to digitize the Sundanese Qur’anic interpretation so that it is widely accessible. This research employs documentation searching through photos, scans, and Microsoft picture managers. The search for information on Sundanese exegesis used the Adobe Acrobat Pro DC. Recently, twenty-seven Sundanese interpretations and translations of the Holy Qur’an have been compiled during the pre-independence and post-independence colonialism, and two have been successfully digitized. This research shows that an information search engine related to the content of Sundanese language interpretation using the Adobe Acrobat PRO DC application can call document pages, web pages, open a file, custom links include letters and keywords.
Level of readiness of users of integrated information systems at UIN Sunan Gunung Djati Bandung using framework Strategy, Technology, Organization, People, Environment (STOPE)
Authors: Abidin R J , Irfan M , Alam C N , Azis M A
Published: March 2021

The optimal utilization of integrated information systems at state universities will be obtained if there are readiness users in the implementation of information technology. Knowing the readiness level of users required as readiness evaluation in the application of an integrated information system. Evaluation of users readiness level at the State Islamic University of Sunan Gunung dating Bandung in the implementation of integrated information systems based on STOPE Framework, this is aiming to measure users readiness level at State Islamic University of Sunan Gunung Djati Bandung to integrated information systems and providing a recommendation base on evaluation result and influence identification of domains on STOPE Framework. Approaching methods or frameworks are made and suggested to analyse the level of readiness. One of them is the STOPE framework approaching, which is used for this research. Strategy, Technology, Organization, People, and Environment (stope) are the development of the Listone method which research the development of technology in society by notice 3 of the main domains, such technology, “T”, Institution or organization and the individual or people. The goal of this research is to give valuation through the readiness of integrated information system users, which is useful for developing an integrated information system. The valuation of readiness in this research by using the STOPE framework, evaluation of 5 domains, 16 issues, and 39 Factors. The result of the analysis shows that from all Strategy, Technology, Organization, People, and Environment of Islamic State University, Sunan Gunung Djati Bandung is ranked 3 on scale 4 through the Integrated information system. Of the STOPE framework, the Islamic State University of Bandung level is ranked 3 on scale 4 through an integrated system.