bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation in design of walker trainer for spatial ataxic athetoid cerebral palsy children using kinect sensor as observation method for assessing body posture on walking
Authors: Widiandoko F , Herdiman L , Susmartini S 
Published: March 2020

Abstract
Balance is a general term that explains the dynamism of body posture to prevent someone from falling. During the child’s growth sensory and motor disorders can be happen that reduce the ability to walk. Celebration Palsy (CP) is a type of disability that attacks child motor disorders. The main objective of this study is to evaluate the body balance of the CP child when using a walker trainer to assess body posture using the REBA method. The test running when the CP child is walking using a walker trainer, then a picture of the child’s posture will be taken using the Kinect Sensor Microsoft XBOX One. Then do posture analysis using the REBA method and 3DSSPP software to find out the comparison results before and after using a walker trainer. The result from REBA score when using an old walker give a score of 9 with a level of risk in musculoskeletal risk, while REBA score when using a new walker give a score of 5. Low back compression result from 3DSSP software when using old walker is 807.7 lb and when using a new walker of 531.8 lb. this result can be accepted by respondents and within safe limits.
Natural posture while working reduces the risk of deteriorating concentration and quality of health
Authors: Widana I K , Sumetri N W , Sutapa I K 
Published: March 2020

Abstract
Occupational health is a very important aspect in determining the life expectancy. The high life expectancy is correlated with the quality of occupational health of workers and will have an important meaning if in carrying out activities the workers have good concentration and health. The purpose of this study is to look at the relationship of posture when working with occupational health and concentration. Improved posture by improving the workstation so that the body is always in a natural attitude. The research method is an experimental study using the treatment by subjects who worked before and after intervention. Ten carving artists participated as research subjects. Data were tested by two pair sample t-test and Wilcoxon signed rank test. The results show that utilizing natural posture can improve health quality and concentration. Indicators of occupational health such as workload decreased by 18.67 percent, namely 132.56 bpm in period I to 107.81 bpm in period II. Musculoskeletal disorders decreased by 14.27 percent, from a score of 55.63 in the first period to 47.69, as well as concentration indicators, such as speed, accuracy and constant all showing better signs after treatment, so it can be concluded that the improvement workers’ body posture.
Shifting of the neutral line at a v-bending process of AISI 1015 steel plate
Authors: Purwadi W , Bandanadjaja B , Idamayanti D 
Published: March 2020

Abstract
During a forming process of steel plate microstructural changes occurs in the material. The outside part of the material experiences tension while compression stress takes place in the inner side. Constant uniaxial load, speed and temperature were applied on the V bending of 4 mm thick low carbon steel plate. Microstructural observation and hardness test were carried out on the cross-section area of the plate to assess the changes within the material. It is revealed that an offset of the imaginary neutral line to the inner side has occurred. The elongation of stretched material on the outer side, which is associated with microstructural changes of grain shape, orientation and hardness value does not exceed the proportional plastic area.
Effect of interlamellar spacing on tensile strength gray cast iron with copper variations
Authors: Siswanto A , Widodo R , Ardiansyah E 
Published: March 2020

Abstract
Gray cast iron is a type of cast iron which has a flakes graphite forms that have vibration damping properties, as well as good mechanical properties, so this material is widely used in various types of equipment and structures. Addition of necessary elements is one way to improve the mechanical properties of gray cast iron. Giving the portion of copper can increase the formation of graphite on eutectic transformation but reduce the formation of graphite on eutectoid transformation, thereby increasing the amount of pearlite. The results of the SEM (Scanning Electron Microscope) test showed an increased number of pearlites, followed by increasingly interlamellar spacing. Denser interlamellar spacing is obtained by increasing the percentage of a copper element in gray cast iron. The results of tensile testing conducted in this study also showed that an increase in the percentage of copper is able to increase the tensile strength. So, it can be concluded that an increase in the portion of the amount of copper element produces closer interlamellar spacing and increases thereby its tensile strength.
A rule-based approach with multi-level feature taxonomy for recognition of machining features from 3D solid models
Authors: Pratama A , Media R I 
Published: March 2020

Abstract
Numerous approaches in recognition of intersecting and isolated features have been proposed in the last several decades. However, they are limited to features with topologically fixed shapes and restricted to isolated machining features since they are dependent on the predefined patterns or rules. In the present work, a rule-based approach is developed to accommodate intersecting features with variable topology shapes. The proposed approach classifies the features according to the multi-level feature taxonomy. In the first level, features are categorized into three groups of primitive features according to their loops and edges types. In the second level, pockets and holes are identified from their primitive feature attributes while visibility maps are adopted to recognize slots and steps features. Intersecting features are identified based on adjacency relationships among face members of the features. On the other hand, pre-defined rules are still utilized in restricted application to identify special machining features. In addition to that, the proposed approach has been implemented to recognize machining features in the industrial parts model in the b-rep format. The implementation result shows the proposed methodology has enlarged the number of identified features up to 55.7 percent compare to the existing method in a commercial software.
Dynamics study of proof jigging ship due to changes in hull geometry
Authors: Haryanto E , Siswandi B 
Published: March 2020

Abstract
Speedboats that serve the Bengkalis-Pekanbaru route continue to suffer losses because there are no passengers, so they have to stop operations. For this reason, development is carried out by changing the function of ships from passenger ships to cargo ships by modifying several ship hull geometries. changes made to the hull changed some dimensions and ratios of the ship. Dynamics study due to changes in the main size of the vessel uses seakeeper numerical simulation. The evaluated hull model has a size of 19.7 meters, width of 3.6 meters, height of 2.21 meters and draft of 1, 135 meters. With a computer-based method to evaluate the motion of the ship, Evaluation results from hull model at 0 knots speed maximum RAO heave is in heading 90 degree with an amplitude of 1, 206 m, RAO roll motion is heading 90 degree with an amplitude of 6.642 degree and RAO pitch motion heading 0 degree with an amplitude of 1.203 degree. At speed 20 knots the maximum RAO heave motion is heading 180 degree with an amplitude of 2.058 m, RAO roll is heading 90 degree with an amplitude of 6.684 degree and RAO pitch motion is heading 0 degree with an amplitude of 1.884 degree.
Analysis of discharge energy on deep and non-deep cycle accumulator on solar cell-based power source
Authors: Sugiarta I N , Suparta I N , Sudiartha I W , Teresna I W , Narottama A A N M 
Published: March 2020

Abstract
Standard battery usually used for solar cell storage is an industrial type of battery that has a deep cycle battery. However, the disadvantage is that the price is too expensive for the public compared to no-deep cycle batteries in the market. With 300-Watt peak solar panels the average charge energy of 1.2 kWh non deep cycle is equal to 405.19 Watt-h and deep cycle is equal to 457.28 Watt-h. For boiling 2.5 litters of water with an induction cooker in steam setting the average discharge energy of non-deep cycle is 514.8 Watt-h and deep cycle is 503 Watt-h. The percentage of SoC charge energy non-deep cycle from 49 to 98 percent and deep cycle from 71 to 98 percent, discharge energy non-deep cycle from 98 to 32 percent and deep cycle from 98 to 71 percent My paper observer comparative discharge energy on deep and non-deep cycle accumulator on solar cell-based power source. We found the gap decrease SoC in non-deep cycle is equal to 66 percent is bigger than the non-deep cycle and it is equal to 27 percent. The percentage of SoC charge and discharge deep cycle accumulator is more stable.
Optimization of tilt angle on-grid 300Wp PV plant model at Bukit Jimbaran Bali
Authors: Sugirianta I B K , Sunaya I G A M , D Saputra I G N A 
Published: March 2020

Abstract
Optimum tilt angle of the photovoltaic (PV) modules are needed for determining the optimum solar energy producing in some specific area. Currently, there is no data for the optimum tilt angle in the area of Bukit Jimbaran Bali. In this paper, the optimization of the tilt angle of the on-grid 300-Wp PV plant model is presented using the PV system software simulation with solar radiation data are from Metronome 7.2. The system specifications on this research use a standard type module system, ground base disposition mounting, monocrystalline cell technology, and free-standing ventilation property. Using azimuth from 0 to 180 degrees in each direction and tilt angle from 0 to 90 degree with 1-degree interval, the simulations found that for fixed solar panels in a year, the optimum tilt angle values are from 12 to 18 degree in the azimuth of 0-degree direction with the system output at 528 kWh/year. The tilt angle is changed every six months, and for April to September, the optimum tilt angle is 32 degree at the azimuth of 0 degrees, while in October to March is in 24 degrees at the azimuth of 180 degrees with the system output at 561 kWh/year.
High-resolution spatiotemporal patterns of China’s FFCO2 emissions under the impact of LUCC from 2000 to 2015
Authors: Zhao Jing , Cohen Jason Blake , Chen Yating , Cui Weihong , Cao Qianqian , Yang Tengfei , Li Guoqing 
Published: March 2020

Abstract
Fossil fuel carbon dioxide (FFCO2) emissions have become a principal driver behind the increase of atmospheric CO2 concentration and spatiotemporal variations of atmospheric CO2 in the urban surface layer. This study quantifies the 2000–2015 urban high-resolution spatiotemporal patterns of China’s FFCO2 emissions under the impact of the land-use and land-cover change. Multi-source data were used together with various up-to-date geostatistics and spatial analysis methods. FFCO2 emissions were determined to rise over the 15 years in the highest emitting cities in the South and East of China. The high-value clusters inside of all cities expanded outward from their city centers and in some cases transferred to economic development zones or new city centers, while the expansion speeds and variation time were found to differ significantly. We found further that then FFCO2 emissions spatial distribution is interconnected with diverse factors: urbanization, and either croplands (rainfed, irrigated, and post-flooding) or native vegetation, being the two most important. As expected, the increase in urban areas was associated with increased FFCO2 emissions, while the wettability in croplands or the increase in native vegetation have an association with the decrease of FFCO2 emissions. Unlike previous studies, we have found no change associated with changes in water cover. Finally, while the primary source of FFCO2 emissions is still coal, there has been a gradual move to cleaner energy (natural gas in Beijing) or more efficient industrial processes (Wuxi and Dalian), although diverse industrial structures and energy efficiencies exist. Over time, the current spatial patterns of FFCO2 emissions in China will conflict with these trends at the macroscale.
Mean-field inference methods for neural networks
Authors: Gabrié Marylou 
Published: March 2020

Abstract
Machine learning algorithms relying on deep neural networks recently allowed a great leap forward in artificial intelligence. Despite the popularity of their applications, the efficiency of these algorithms remains largely unexplained from a theoretical point of view. The mathematical description of learning problems involves very large collections of interacting random variables, difficult to handle analytically as well as numerically. This complexity is precisely the object of study of statistical physics. Its mission, originally pointed toward natural systems, is to understand how macroscopic behaviors arise from microscopic laws. Mean-field methods are one type of approximation strategy developed in this view. We review a selection of classical mean-field methods and recent progress relevant for inference in neural networks. In particular, we remind the principles of derivations of high-temperature expansions, the replica method and message passing algorithms, highlighting their equivalences and complementarities. We also provide references for past and current directions of research on neural networks relying on mean-field methods.
The performance of low crested breakwaters as a sand trap for shore protection
Authors: Munandar Fikri Aris , Triatmadja Radianta , Yuwono Nur 
Published: March 2020

Abstract
The low crested breakwater (LCB) is considered as a new coastal protective structure which has not been widely used compared to other coastal protection structures. LCB has more advantages than conventional ones such as breakwaters, requiring lower cost and aesthetically not disturbing nature because of its position which is below sea level so it is suitable for beach tourism.
Studies on low crested breakwaters are mostly about the ability to absorb energy waves and how beach responded to the structure. However, the study on the ability of this low crested breakwater such as a sand trip is still limited. Therefore, this study aims to observe the breakwater’s performance as a sand trap for shore protection and the effect of the parameters on the performance.
This study was conducted on the plexiglass wave made with a length of 18 m, a width of 0.3 m and a depth of 0.45 m. Wave parameters (height and period) and structure parameters (height and width) were employed as a reference in this study. This research was conducted by varying the waves, height and water depth. The results indicate that the number of transport sediment tends to be increased following the wave height (Hi), the water depth at the height of the structure (Rc) and reduced wavelength (L). The type and position of a wave breaking also affect the amount of transport sediment.
The effect of crystalline material addition to concrete quality
Authors: Nataadmadja Adelia Dwidarma , Setyandito Oki , Suangga Made , Kosasi Sonny 
Published: March 2020

Abstract
To improve the moisture susceptibility of concrete structure that will be exposed to water, an admixture should be added. One of the additives that can be added is Xypex C-1000 NF, which a crystalline material. A number of past studies have shown that this additive is effective in improving the moisture resistance of concrete structure. However, the application of this additive in Indonesia was found to be challenging as the performance of the concrete mixture was not as good as expected. This research aims to evaluate the effect of adding various percentages of this additive, various amount of water to be added to the concrete mixture, and the methods of mixing the materials, which are wet and dry methods, by looking at both the slump value and the compressive strength of the concrete specimens. From the research results, it was found that the methods used to mix the additive matter to produce a desirable concrete quality. The wet mix method is the preferable method as it produces less variations in compressive strength test results regardless of the additional water amount. It was also found that, by using both dry and wet mix methods, the usage of Xypex C-1000 NF can improve the compressive strength value.
Effectivity analysis of the application of TIA (total impervious area) and EIA (effective impevious area) in a micro scale watershed (case study on Sugutamu sub-watershed)
Authors: Hanan Nisrina , Sutjiningsih Dwita , Anggraheni Evi 
Published: March 2020

Abstract
There are two methods that can be used to calculate the area of impervious cover on a watershed, Total Impervious Area (TIA) and Effective Impervious Area (EIA). Calculation of impervious cover generally uses the TIA method. Recently, based on several researches, EIA is the better indicator for identifying surface runoff discharge. This study aims to analyze the difference of surface runoff discharge using both TIA and EIA methods in different scales of an urban watershed area, specifically the Sugutamu sub-watershed and Sugutamu catchment area. Land cover identification with the TIA method uses the Rupa Bumi Indonesia map of 2017. While for the EIA method, the land cover identification uses the 2017 visual interpretation of high-resolution satellite imagery from the software GIS. FTUI and Cibinong stations have been selected as the daily rainfall data for the surface runoff simulation of the watershed and the catchment area using the software HEC-HMS. The result of the simulation shows that the EIA method in the urban catchment area has a more significant impact. In conclusion, the use of EIA should be considered more in micro-scaled modelling of an urban watershed’s surface runoff.
Green building incentive model during design recognition to ensure the reliability of green building operation and maintenance achievement
Authors: Berawi Mohammed Ali , Basten Van , Latief Yusuf , Crévits Igor 
Published: March 2020

Abstract
A low number in green building development cause the building construction will have an immense direct and indirect impact on future generations. This paper identified the optimum incentive model driving the building efficiency achievement in green building operation and maintenance. Critical factors that influence building consultant and contractor decision in green building design and construction toward the operation and maintenance achievement planned were analysed using partial least square structural equation modelling (PLS-SEM) methods. Precisely, the study modelled the regional policy affecting building efficiency achievement in the developing country. This research already identified the way of green building stakeholders’ operations and maintenance in the capital city of Indonesia. Quantitative method using case study analysis already validated for the questionnaire data. The PLS-SEM indicated that sustainable in green building implementation and sustainability has significant causal effects on the regional policy of building the life cycle. Among these factors, tax exemption, expedited permit, and floor to area ratio were significant. The regional policy indicators in green building implementation have the most significant effect on building efficiency achievement.
Optimization of Cipageran water treatment plant, Cimahi, West Java, Indonesia
Authors: Sani Indry Kemala , Winarni  , Kusumadewi Riana Ayu 
Published: March 2020

Abstract
The Cipageran Water Treatment Plant (WTP) is one of water treatment plants managed by PDAM Tirta Raharja, Bandung Regency, which supply drinking water for Cimahi District and Central Cimahi Subdistricts with an average production capacity of 169 L/sec. This research aims to evaluate the performance of the operating unit and process in Cipageran WTP and provide optimization recommendations based on evaluation results. The steps in this research include evaluated the existing conditions of Cipageran WTP, providing recommendations on the results of evaluations and analyzing the quality of the production of Cipageran WTP. From the results of Cipageran WTP evaluation, there were several parameters that did not fulfil the design criteria which were Gtd on coagulation, NFr values on sedimentation and backwash rate on filtration. The evaluation result of maximum discharge in intake was 400 L/second, coagulation of 210 L/second, flocculation of 210 L/second, sedimentation of 270 L/second and filtration of 250 L/second, with the result the optimum discharge can operated in Cipageran WTP is 210 L/second. The quality water production has met the quality standard according to the Minister of Health Regulation No. 492 of 2010 concerning drinking water quality requirement, that turbidity limit is 5 NTU with very high removal efficiency, which was more than 90%. From the result, it can be said that Cipageran water treatment plant in this study had met the drinking water quality standard to be applied as drinking water treatment plant.
Modelling of severity level causes factors in the traffic accident victims in the province of West Nusa Tenggara
Authors: Pradipta Previanto , Siregar Martha Leni , Kusuma Andyka 
Published: March 2020

Abstract
Traffic accidents have always been one of the common causes of injuries or even deaths in the world. Traffic accidents do not always occur only because of human error, but sometimes the state of nature or poor infrastructure are often the cause of accidents. NTB Province itself is a province that has just been audited after major road construction was carried out. So in this study the causes of the accident will be used as a part of the factors in determining the severity of victims in traffic accidents. With three severity levels, namely minor injuries, severe injuries, and death, the variables will be analyzed statistically.
License plate recognition system based on principal component analysis and one-against-one multi-class support vector machine
Authors: Kosasih Kevin Kristofer , Astuti Winda , Oey Endra 
Published: March 2020

Abstract
The license plate number which identifies the original registered place of the vehicle, as well as the usage of each vehicle which belongs to a private entity, a government vehicle, and a commercial vehicle, is identified in this work. Vehicle plate detection by a camera that mounted on parking gate. Detection process starts with collecting data using the camera. This work consists two important parts, namely image processing and classification system, respectively. In the image processing, the plate image capture by the camera is extracted to the feature space which will use as the input to the classification system. The classification system is then will identify the extracted input to the plat recognition identification. The Fast Fourier Transform (FFT) and Support Vector Machine (SVM) are applied as feature extraction technique and classification methods, respectively. The results of the training and testing phase are 80% and 66%, respectively.