bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Development of the myKadera System for Object Vocabulary Mastery for Students with Hearing Impairment Based on Augmented Reality
Authors: Thalib I , Arifin F 
Published: December 2019

Abstract
This study aims to: 1) design appropriate learning media based on Augmented Reality on the introduction of object vocabulary for hearing-impaired students, 2) perform the developed system. This research belongs to research and development (R&D). This developmental research refers to the stages of learning media development by Arief Sadiman, et al and the stages of the development model by Borg & Gall. This research development procedure consists of three major steps that must be passed, namely planning, development and evaluation activities. The result of this Android-based myKadera system development research is that the system has some features provided including audio, sign language videos, 3D animation, and object vocabulary quizzes that were packaged more interestingly, applicative and innovative with a more real-time visual display, supported by object vocabulary learning media books with the help of AR (augmented reality) markers. The results of the test indicate that the application meets ISO/IEC 25010 standards on aspects; (1) functional suitability; all features of the application has been successful and said to be good, which means there are no functions that fail on testing, ( 2) application compatibility; the application is 100% compatible with sub-characteristics of co-existence, various operating systems, and various types of devices used for testing, (3) performance efficiency; the application is successfully run using the AppAchhi test device. The application is said to be good without experiencing memory leak or application damage which results in force close or launch fail. The application shows an average time behavior of 0.063 seconds/thread, an average CPU usage of 20.39%, and average memory usage of 13.08 MB, and (4) usability testing obtained a percentage of 95.50%. These results indicate that the application is very feasible and meets the usability aspect.
Augmented Reality As Android Based Learning Media for Wood Field Laboratory Work
Authors: Wulandari B , Pratama G N I P , Hasanah N , Yuniarti N 
Published: December 2019

Abstract
The objectives of this research were: (1) producing Android-based AR products in the form of a Wood Field Laboratory Work module in Department of Civil and Planning Engineering Education, Faculty of Engineering UNY to facilitate students’ visualization abilities; (2) knowing the quality of Augmented Reality products for the Wood Field Laboratory Work module so that it is suitable for use by students and teaching staff; and (3) addressing the learning problems that have so far been present in the Wood Field Laboratory Work. The method used was the Software Development Life Cycle software development model which was described by the v-model waterfall. The v-model included: (1) the stage of specification of user requirements; (2) system architecture design; (3) designing components; (4) writing program codes; and (5) testing. The test results using ISO 25010 indicated that the application of learning media was stated to be very feasible in functional suitability, compability, and usability aspects. While from the performance efficiency aspect, the application was considered feasible because there was no memory leak on the device that run it, and CPU usage by five different devices reaches 10%, which is still below the safe limit (15%).
Simtenismeja.com Features as an Information System in the Implementation of Table Tennis Matches
Authors: Hertanto D B 
Published: December 2019

Abstract
The application of Information Technology has helped many business processes in various fields. Table tennis as a sport still has many problems. The process of implementing the match up to now still relies heavily on manual methods. The use of computers in the competition is still limited to documentation. Match schedules, match charts and validation of participants are examples of problems that make it difficult for the competition committee. Simtenismeja.com is an application that has been developed to overcome the above problems. This system is based online, so all processes can be done anytime and anywhere using all possible devices. This application has facilities for recording data on participant athletes, preparation of schedules and charts of matches automatically, and recording and publication of results of matches. This system has been implemented in a table tennis match. User responses have been recorded to show whether the system is proven to make it easier to do table tennis matches or not. The response test results state that all buttons, interface pages, and menus can function properly. The next process is comparing the implementation of matches manually with the implementation of matches assisted by simtenismeja.com application. In general the use of applications in matches is much more efficient in terms of time and accuracy.
Visual Speech Recognition for Daily Indonesian Words Based on Combination of Double Difference and Image Projection Method
Authors: Nasuha A , Arifin F , Irmawati D , Hasanah N 
Published: December 2019

Abstract
In visual speech recognition, there are two approaches to lip feature extraction, which are based on appearance and shape. The appearance-based approach is usually better, because it provides visual features that not only include lip structure but also the visibility of the teeth and tongue. However, the disadvantage of this approach is that it produces too many features. Integration of double difference and horizontal-vertical image projection, is part of the appearance approach, in addition to using image projection as dimensional reduction. In previous study, the method has succeeded in recognizing 5 daily indonesian words, with data in form of videos recorded inside the room. In this study, we used the same words with 5 additional new words recorded outside the room. MLP (Multi Layer Perceptron) and SVM (Support Vector Machine) are used as classifiers. The word recognition process is evaluated using 10-fold cross validation. The method tested reached 88.92% on classification accuracy and 0.9948 on AUC (Area Under ROC Curve).
Dynamic Response and Vibration Isolation Analysis of Very Large Floating Building under Wave Action
Authors: Zhang Jian , Wang Xiang , Yuan Pingping , Wang Hanghang 
Published: December 2019

Abstract
Taking the buildings above the very large floating structures as research object, the finite element software ANSYS/AQWA was used to carry out hydrodynamic analysis of the single module very large floating structure, and the motion response parameters were obtained. A common multi-layer steel frame structure model and a multi-layer steel frame structure model with three-dimensional vibration isolation bearings were established by using SAP2000, and dynamic time history analysis was carried out for these two steel frame building models. Studies have shown that the motion response of the very large floating structures under the action of waves can not be ignored for the upper building. After the vibration isolation bearing is added to the floating buildings, the natural vibration period of the upper steel frame structure is significantly extended, the inter-layer shear force is slightly reduced, and the inter-layer shear force, interlayer displacement and floor acceleration are increased. Compared with the installation of vibration isolation bearings for land buildings, the vibration isolation of offshore floating buildings is not effective.
A new formula of Rotational Stiffness Coefficient of pile hinged on top under moment load
Authors: Chen Guozhou , Lin Zhiyong , Lin Wenbin 
Published: December 2019

Abstract
The analysis and design of single piles subjected to lateral load are very important. The traditional expression for calculating rotational stiffness coefficient is too complex, and it needs large amount of computation. This paper proposes a new approach for getting rotational stiffness coefficient of pile hinged on top under moment load. It has been proved that the new method is the equivalent of traditional method of calculating rotational stiffness coefficient using power series. A case study shows that the same answer can be gotten in calculating rotational stiffness coefficient by the two methods. However, a large computational cost can be reduced by the new method.
Confined water quality analysis and assessment of water source in Huan County, Qingyang city
Authors: Hu Aiping , Yang Yang , Liu Wanfeng 
Published: December 2019

Abstract
To understand the quality of confined water in Huan County, Qingyang City and explore whether the water can be directly used as drinking water, this paper carried out the single component evaluation and comprehensive evaluation according to the national standard Sanitary Standard for Drinking Water (GB5749—2006) and Quality Standard for Ground Water (GB/T14848—2017). The result shows that the turbidity, total hardness, total dissolved solids, sulfate, chloride, fluoride and total σ radioactivity of in the single group of the confined water in Huan County, Qingyang City, cannot reach the national standard. In conclusion, based on the water quality analysis report and classification standard of the groundwater quality, the confined water quality of the water source in Huan County is poor, which cannot be directly used as the drinking water.
Engineering risk management of China transnational PPP infrastructure projects
Authors: Ding Xin , Qin Yuge , Chen Chuan 
Published: December 2019

Abstract
With the implementation of One Belt And One Road plan in 2013, Chinese enterprises have gradually increased their investment in transnational PPP infrastructure projects. Due to the difficulty of transnational investment and asymmetric information, the engineering risk factors of transnational PPP infrastructure project investment deserve everyone’s attention. Based on the literature review, this paper identifies the engineering risk factors of current transnational PPP infrastructure projects. Meanwhile, according to the experience of domestic PPP projects allocation and the experience of enterprise interviews, it comes to the engineering risk management focus of Chinese enterprises when they invest in transnational PPP infrastructure projects.
Finite Element Analysis on Earth-rock Cofferdam Behavior during Pumping and Drainage of Foundation Pit
Authors: Deng Yang , He Changhai , Fu Shaojun , Hui Jianwei 
Published: December 2019

Abstract
The drawdown velocity of foundation pit water level in existing projects is mostly determined empirically, and the influence of water level drawdown velocity on the seepage field and stress field in the weir body is not fully considered. The water level change of the foundation pit is an important factor affecting the stability of the cofferdam. Therefore, it is of great practical significance to study the variation law of seepage field and stress-strain field of cofferdam during the pumping process of foundation pit, to accurately judge the stability of cofferdam slope and to formulate reasonable pumping and drainage scheme. Based on the 1th temporary earth-rock cofferdam of Yongning Water Conservancy Project, the nonlinear finite element method is used to calculate the spatial-temporal evolution of seepage field and stress-strain field of earth-rock cofferdam under different drawdown velocity of water level. The overall deformation of the cofferdam, the shear failure and instability characteristics of the slope, and the influence of water level changes on the stability of the cofferdam slope are analysed. The results show that the distribution of unsaturated zone and negative pore pressure zone is basically the same. The excessive water level drawdown velocity is easy to break the balance between the seepage field and the water level fall time, resulting in the rise of saturation line height and the increase of the upper bending rate. The effect of seepage control is weakened, and the stability of the slope is poor. The shear deformation of the cofferdam slope develops from the foot of the slope and extends to the crest of the cofferdam until it runs through. At the same time, local plastic deformation occurs at the foot of the outer stone slag berm, and the maximum deformation transits to the foot of the inner slope. Under the action of seepage force, the stability of the inner slope is always smaller than that of the outer one; the change of water level drawdown velocity is very sensitive to the stability of the slope, when the drawdown velocity is greater than the critical velocity, the stability of the slope decreases sharply. Combined with the characteristics of earth-rock cofferdam, on the basis of satisfying the stability of cofferdam, the drawdown velocity of water level should be controlled within 1.28m/d. The research results of the thesis have reference significance for the selection of pumping speed of foundation pit similar to earth-rock cofferdam.
Dynamic and Static Load Test of PC Composite Box Girder Bridge with Corrugated Steel Web
Authors: Wang Yongwei , Li Lei 
Published: December 2019

Abstract
In order to evaluate the safety of a PC composite box girder bridge with corrugated steel webs, Midas/Civil is used to analyze the bridge. Through dynamic and static load tests, the actual working state, vibration characteristics and dynamic response of the bridge under load are understood. Combined with experimental research and theoretical analysis, the comprehensive evaluation of the bearing capacity and working condition of the bridge is made, which provides reference for the design and maintenance of such bridges.
Application of wireless communication technology in safety monitoring system of Guandi Hydropower Station
Authors: Tao Jiaxiang , Wang Tian , Li Jinwen 
Published: December 2019

Abstract
In the early stage, the monitoring system for No. 4 Adit in Guandi power station is mainly based on manual measurement. Considering the measuring period and safety problems, it needs to be transformed into automatic measurement. At present, there are two mature technologies, one is using fiber grating measurement scheme, and the other adopts wireless communication technology scheme. According to the actual situation of the field, the author finally adopts the wireless communication technology scheme. On the basis of the actual effect of automation system, NANRI GPRS DTU 4100 wireless communication technology is stable and reliable. This technology provides a guarantee for the safe operation of Guandi Hydropower Station.
Risk Assessment of Urban Waterlogging Based on GIS
Authors: Jun Shao 
Published: December 2019

Abstract
In this paper, based on ArcGIS spatial analysis technology, taking Tongshan County as an example, the risk index evaluation model of urban rainstorm waterlogging disaster is established. In the comprehensive risk assessment and regional research, the weight of each risk index is determined by analytic hierarchy process (AHP), and the fuzzy evaluation is applied to the raster data of GIS risk index, so as to realize the data management of risk index, the combination of spatial analysis and visual expression. The results of risk assessment classification and regionalization can provide technical support and decision support for urban waterlogging risk prevention and disaster reduction planning in Tongshan County.
Discussing on Prediction of Local Scour Depth of Bridge Foundation
Authors: Cao Jin , Wei Song , Zhang Yingjie , Chan Huadong , Chen Lingwei 
Published: December 2019

Abstract
Local scour is one of the main factors leading to the failure of bridge foundation. In this paper, the mechanism of local scour and various factors affecting local scour are expounded. Based on the erosion mechanism and influencing factors, several common calculating formulas and prediction methods based on calculation algorithm are analysed. Finally, the shortcomings of existing research are summarized and the possible future research directions are pointed out.
Turbulence Characteristics of Internal Waves in an Improved 3D Numerical Wave Tank
Authors: Yu Zhenzhen , Zhang Lei , Yang Yuxia , Wang Lingling , Wang Ruiling , Zhu Hai 
Published: December 2019

Abstract
A three-dimensional unsteady mathematical model was applied to simulate the generation and propagation of the internal solitary waves in an improved numerical wave tank. The turbulence characteristics of the internal waves were investigated by means of the turbulence model, a concept of a fractional volume of fluid (VOF) was employed to track the internal interface of two-layer water. The effect of irregular topography on turbulence was described by the spatial and temporal distributions of turbulence kinetic energy, its dissipation rate. Simulation results show that the highest values of turbulence kinetic energy and its dissipation rate occur at the interface of two-layer water when waves propagate in both flat and irregular terrains. The values are higher in irregular topography cases than those in flat topography cases, which indicates that the turbulence associated with abrupt topographies is more intensive. The paper provides a reasonable approach for understanding the turbulence characteristics of internal waves in density-stratified waters.
Research on performance of prefabricated bridge joint
Authors: Xie Wentao , Sun Yun , Chang Shan , Qian Jianqi , Yang Ming 
Published: December 2019

Abstract
In this paper, the influence of different parameters such as joint form, joint stiffness and shear key form on the mechanical properties of the joint was analyzed based on an asymmetric simply supported-continuous box girder. The finite element analysis model of the bridge was established by the finite element software MIDAS CIVIL 2017, and the mechanical properties of the whole bridge were analyzed. Based on the general finite element software ABAQUS 2017, the local solid finite element models of the four types of joints, such as C50 concrete wet joint, C80 concrete wet joint, dense key prefabricated assembly joint and sparse key prefabricated assembly joint, were established to study the mechanical properties and feasibility. The results show that the cracking moments of the four types of joints are more than twice of the negative moment of the middle fulcrum section under the most unfavorable state, which meet the requirement of the service performance. The breaking moments of the four types of joints are more than three times of the negative moment of the middle fulcrum section under the most unfavorable state, which meet the requirement of the carrying capacity.
Finite element analysis of double-layer box type modular building
Authors: Zhang Jianfei , Peng Lin , Shi Yijian , Chen Baoguang , Sun Xidong , Liu Chuang 
Published: December 2019

Abstract
Box - type modular building with advantages of quick installation, good comfort, beautiful appearance and convenient turnover, is widely used in construction of temporary construction, business services, holiday villas and other projects. In this paper, a single span double - layer box - type modular building in Shenzhen was taken as an example, using modular building system with a special-shaped corner column and cold-formed thin-walled beam. The finite element software ANSYS was used to calculate the overall structural strength and stiffness, and the stress and displacement calculation results under the control of vertical load and horizontal wind load were respectively given. The results show that under the snow load, the maximum stress of the whole structure is 163.14MPa, which appears in the middle of the second layer top frame purlin. Under the horizontal wind load, the maximum stress of the whole structure appears at the beam-to-column connection panel, and the stress of the first story is more unfavourable than that of the second one. The maximum displacement in the horizontal direction is 10.37mm. The maximum displacement angle between layers is 1/278. The above calculation results all meet the requirements of “Standard for design of steel structures” (GB50017-2017), which can ensure the safety and reliability during normal use. Furthermore, it can provide reference for the design and optimization of multi-storey box buildings.
Experimental study on static and fatigue properties of CFRP reinforced concrete beams
Authors: Zhou Yanqiong , Cui Xian 
Published: December 2019

Abstract
In order to solve the problem that steel corrosion seriously limits the service life of bridges, predecessors put forward the measure of using carbon fiber reinforced composite bar (CFRP) as stress bar. In order to study the static performance, fatigue performance and damage development of CFRP ribs, the static loading test of two mixed reinforced beams with different reinforcement ratios was carried out based on the static load test of pure reinforced concrete beams through three-point concentrated loading. The test results show that the CFRP rib beam works by the development process of balanced crack extension and fiber rupture; the deflection and strain of the test beam increase significantly in the initial stage of cyclic loading; as the number of load cycles increases, the crack growth rate becomes slower. And entering a relatively stable stage of development, and a large increase in the vicinity of the destruction; Under the same reinforcement ratio, the static load limit of composite reinforced beams is 0.95 times of that of pure reinforced concrete beams; the static load limit of 2FRP beams is 50% of that of 3FRP beams, but the fatigue life of 2FRP beams is 75 times of that of 3FRP beams. It can be seen that appropriate reinforcement ratio can effectively improve the service life of specimens. On the basis of the test, some suggestions on the design of CFRP reinforced concrete beams are put forward. The research results can be used for reference in the follow-up study.
Development of an edutainment shaft garden for integrated waste management in the UGM green campus
Authors: Cahyanti Pita Asih Bekti , Widiastuti Kurnia , Agus Cahyono , Noviyani Pipit , Kurniawan Kemas Ridwan 
Published: December 2019

Abstract
Biomass productivity and organic cycles in tropical regions are the highest in the world because of increased temperature, rainfall, humidity, and sunlight year-round. Organic waste not only comes from the agricultural sector (agriculture, horticulture, plantation, forest, livestock, and fisheries), but also from non-agricultural entities (cities, market, offices, households, campuses, industries, and other sectors). Organic waste volume from the integrated campus UGM yard reached 30 tons/day, requiring the support of adequate self-managed waste management facilities. Various experimental approaches were used in designing the Waste Management Centre at UGM as part of an edutainment (education and recreation) program. The problems at the Waste Management Centre included (1) an integrated system of recreational functions in biogas and compost processing; (2) high operational costs; and (3) space efficiency for productivity and processing. Development of a ‘Shaft Garden’ was chosen a solution for (1) creating visual attraction and space experiences from biogas and compost management; (2) utilizing gravitational force as a utility distribution system; and (3) creating a sequence of spaces according to the function. Integrated organic-cycle management by empowering the 9R (Reuse, Reduce, Recycle, Refill, Replace, Repair, Replant, Rebuild, Reward) framework with a multi-function and multi-product approach has provided higher value-addition to environmental, economic, socio-cultural, and health aspects.