bluuebunny/crossref_metadata_2025_split huggingface dataset:
Natural ventilation provided by a self-sufficient facade system
Authors: Scheuring L , Weller B 
Published: January 2020

Abstract
In order to meet the requirements of the European Directive on the energy performance of buildings, energy producing elements have to be integrated into the majority of the building envelopes. For integrating photovoltaic or solar thermal modules into the facade system, two different building fields have to be connected, namely the facade system on the one hand and the total building energy system, which controls the HVAC (heating, ventilation, and air conditioning) and integrates an energy storage system, on the other hand. This can result in intersection problems. One solution to overcome intersection problems can be a concept of a standalone facade system that produces energy and at the same time is able to use this energy to control indoor air climate. Thus, no intersection with other building fields is necessary. In the research of the author, a facade system is developed that uses natural ventilation to control indoor air climate. The natural ventilation is controlled automatically to overcome the risk of inadequate user control which could result in higher heating or cooling loads. The auxiliary energy which is required for the opening mechanism is provided by a photovoltaic module and a battery system. Both can be integrated directly into the facade system. This results in a self-sufficient system for natural ventilation. This paper describes the self-sufficient facade system. It contains the construction as well as simulations that are used for dimensioning the energy generating system. One part of the simulations is defining control strategies that enhance the user’s comfort and reduce heating and cooling in order to quantify the opening times and their auxiliary energy needs. Further simulations were performed to quantify the necessary capacity of the battery system. Thus, over- or underestimation of the battery capacity could have tremendous impact on the longevity, production costs, geometry, and weight of such a window. This publication compares a basic method that assumes a 6 Ah battery capacity with a detailed simulation that analyses weather data for each minute of a year. The detailed analysis suggests a battery with 50 % less capacity and can halve the costs of the battery system.
A distributed EV charging strategy in an integrated energy system
Authors: Zhu Tao , Shi Xiaoying , Duan Ronghua , Wang Yizhen , Xu Yinliang 
Published: January 2020

Abstract
Electric vehicles (EV) are viewed as an environmental-friendly travel device but bring the driver with range anxiety. One of the solutions to tackle this issue is to recharge at the fast charging station (FCS). Since the traffic flow of the transportation network and the operation condition of the fast charging station varies from time to time, it is important to implement real-time charging guiding for the EV drivers. In this paper, we propose a distributed guiding method to search for the best FCS with minimum sum of time cost and electricity purchasing cost. The EVs are viewed as a distribution of spatial and temporal electrical loads, which would affect the locational marginal price (LMP) of the FCS. The varied LMPs would also react upon the EV driver’s choice. The proposed guiding method utilizes the wireless communication technologies. Simulation test demonstrates the effectiveness of the proposed EV guiding method in an integrated energy system.
Advances in research on effects of biochar on soil nitrogen and phosphorus
Authors: Huang L Q , Fu C , Li T Z , Yan B , Wu Y , Zhang L , Ping W , Yang B R , Chen L 
Published: January 2020

Abstract
In the context of global research, soil non-point source pollution is becoming more and more severe. Biochar is used as a soil amendment to repair soil. Therefore, research on biochar has received extensive attention. According to relevant literature reports, biochar has strong adsorption performance, and according to its nature, it can improve the availability of nitrogen and phosphorus in crops and fix nitrogen and phosphorus in soil. Also, biochar can also improve soil structure and reduce the migration of N and P with soil media. The research mechanism of biochar is distinct. The article cites the results of the majority of researchers and explains the effects of different biochars. Biochar has a certain promoting effect on nitrogen, phosphorus adsorption, conversion and leaching. In the future, we should strengthen the prospect of biochar in the treatment of soil environment and sustainable development of the environment.
Production and characterization of nanocrystalline cellulose from palm empty fruit bunch fiber
Authors: Adriana A , Saifuddin S , Jalal R 
Published: January 2020

Abstract
The main objective of this research is to utilize fiber waste from palm empty fruit bunch provided very abundant in Aceh. For that needs to be studied and researched other benefits are more valuable. Among them is a source of raw material to produce nanocrystalline cellulose (NCC), a material in nanometer dimensions which can be used as fillers or reinforcing a matrix in order to provide bio nanocomposites. NCC isolated from palm empty fruit bunch through the hydrolysis of sulfuric acid, using a solvent mixture of DMAC/LiCl, were passed on activated dialysis membrane after centrifuged to release it from solvent. NCC will be characterized include aspect ratio, morphology, thermal, structural test, and several other physical parameters. The end product is characterized by means of thermogravimetric analysis (TGA), Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Differential Scanning Calorimetry (DSC) and Scanning Electron Microscopy (SEM). From XRD and FTIR analysis showed that the nanocrystalline cellulose formed was Nano cellulose I with an average size of 72 nm. DSC and TGA thermal test showed that the glass transition, melting point, and decomposition temperature of NCC were 109.59 ° C, 191.28 ° C, 210 °C, respectively.
Performance analysis of a porous asphalt mixture with the use of concrete waste as a coarse aggregate and the addition of gilsonite materials
Authors: Sianturi F N M , Sulaiman S 
Published: January 2020

Abstract
A Porous asphalt mixture uses an open gradation with a percentage of the coarse aggregate greater than the fine aggregate, so that it has a larger air void. This mixture has a main obstacle, i.e. the low stability value which is caused by a number of cavities in the asphalt porous mixture. So as to increase the stability value of the asphalt porous mixture, one of the methods used is by adding a substance, i.e. gilsonite which aims to improve the quality of oil asphalt and the quality of the mixture. The use of concrete waste as the coarse aggregate can also increase the mixture stability. The method used in this study is an experimental method with a laboratory scale. The aggregate used in this study is the Australian gradation. The proportion of the coarse aggregate between concrete waste and crushed stone is 0 and 100, 25 and 75, 50 and 50, 75 and 25, 100 and 0. Meanwhile, the added material used is gilsonite, with gilsonite variation of 4.5%; 5.5%; 6.5%; 7.5% and 8.5%. The use of optimum asphalt content of 5.13, the optimum waste content of 100% concrete waste and the optimum gilsonite content of 8.5% resulting in a better characteristic and performance value of the porous asphalt mixture than the normal porous asphalt mixtures by marshall test, dynamic stability, slip resistance and resilient modulus.
Evaluation and analysis of flexible pavement overlay thickness using asphalt modified SIR 20 on Dawuan – Cikampek Road using AASHTO 1993 method
Authors: Ludhyrani L F , Suherman S , Utami R 
Published: January 2020

Abstract
Flexible pavement structural evaluation using AASHTO 1993 method is carried out based on deflection values from the survey using the Falling Weight Deflectometer (FWD) which will be used to calculate the Effective Structural Number (SNeff), Structural Number in Future (SNf) and overlay thickness. Flexible pavement is susceptible to rutting damage and permanent deformation. To increase rutting damage and permanent deformation resistance, Asphalt Concrete Wearing Course (ACWC) was being modified by adding SIR 20 material. In determining overlay thickness using AASHTO 1993 method, one of the factors influencing the thickness was properties of ACWC material. In this paper, a case study is carried out on the Raya Dawuan – Cikampek Road. The result of this case study were ACWC-Modified overlay thickness was thinner than ACWC-Normal. ACWC Modified pavement overlay structure thickness obtained at 80 mm meanwhile in ACWC-Normal was 100 mm.
The solution of traffic congestion during flyover construction at Antapani intersection in Bandung
Authors: Sulistianny K , Sutrisno M 
Published: January 2020

Abstract
The Construction of Antapani Flyover has caused traffic congestion. This paper is to find the solution of congestions to achieve the queuing standard allowed referring to PKJI 2014. The method of research uses deductive and inductive which are analysed using the risk analysis of traffic disruptions. The scope of analysis is focused on the two critical construction works, namely abutment and bridge wall works. The traffic congestion analysis considers the narrowing road due to construction disruption. The traffic congestion analysis was carried out by comparing the congestion of the existing construction with the construction method proposed. The three proposed alternative solutions are by the increasing road capacity, scheduling construction methods, and a combining solution those two alternatives. The results show that the best alternative solution to reduce traffic congestion during construction is a combined solution between the increasing road capacity and scheduling construction methods. The result of alternative solution shows the decrease of queue on Terusan Jakarta road reaching up to 90% from the existing condition. The conclusion describes that the narrowing road of work zones of construction has a huge influence on traffic congestion. By this result is suggested to consider the magnitude of disturbance as well as the solution of the traffic congestion that may occurred.
The utilization of sandblasting sand waste for mortar and normal concrete
Authors: Qomariah Q , Sugiharti S , Riyanto S 
Published: January 2020

Abstract
Nowadays, large amounts of sandblasting sand waste are being produced and pollute environment. Sandblasting utilize to remove accumulated organic matter and other debris on concrete, steel, and wood components. The objective of experimental Laboratory for an analyse utilization of sandblasting waste in term of mortar strength, concrete strength, absorption and work ability of the mix. An experiment was conducted at civil laboratory POLINEMA using mortar cube 10 × 10 cm, and cylindrical concrete mould ø 15 × 30 cm, the curing time 3 and 7 day for mortar, 7 and 28 days for concrete. The testing refere to ASTM C-150 for mortar and Normal concrete with SNI-03-2834-2000. Fraction of waste sand are 0%,10%,20% and 30% of natural sand. The result, mortar compressive strength 3 days, 120 kg/cm2(0%), 125kg/cm2(10%), 129kg/cm2 (20%), and 131kg/cm2 (30%). For 7 Days, 190 kg/cm2(0%),200 kg/cm2(10%), 203 kg/cm2 (20%), and 213kg/cm2 (30%). For concrete strength 7 days, 150 kg/cm2 (0%), 161 kg/cm2 (10%), 168kg/cm2 (20%),174 kg/cm2 (30%), For 28 days, average concrete strength 225 kg/cm2 (0%),259 kg/cm2 (10%), 269 kg/cm2 (20%),272kg/cm2 (30%). An absorption decrease 8%(0%), 5%(10%), 4.5%(20%), and 3.9%(30%), work ability of the mix increase 3.5cm (0%), 3.57 cm (10%), 4.5cm (20%), and 4.9 cm (30%), that is indicated by slump value.
Comparison of Viola-Jones Haar Cascade Classifier and Histogram of Oriented Gradients (HOG) for face detection
Authors: Rahmad C , Asmara R A , Putra D R H , Dharma I , Darmono H , Muhiqqin I 
Published: January 2020

Abstract
Human face recognition is one of the most challenging topics in the areas of image processing, computer vision, and pattern recognition. Before recognizing the human face, it is necessary to detect a face then extract the face features. Many methods have been created and developed in order to perform face detection and two of the most popular methods are Viola-Jones Haar Cascade Classifier (V-J) and Histogram of Oriented Gradients (HOG). This paper proposed a comparison between VJ and HOG for detecting the face. V-J method calculate Integral Image through Haar-like feature with AdaBoost process to make a robust cascade classifier, HOG compute the classifier for each image in and scale of the image, applied the sliding windows, extracted HOG descriptor at each window and applied the classifier, if the classifier detected an object with enough probability that resembles a face, the classifier recording the bounding box of the window and applied non-maximum suppression to make the accuracy increased. The experimental results show that the system successfully detected face based on the determined algorithm. That is mean the application using computer vision can detect face and compare the results.
Study of PID control implementation in the process of cheap breaking using Peltier cooling elements
Authors: Singgih H , Siswoko S , Komarudin A 
Published: January 2020

Abstract
Methods of the processing dairy products other than pasteurization and reducing water content (condensed milk), milk can also be processed into cheese. Namely with the cheese maturation method. Maturation is the final process of the cheese making process. Maturation (ripening) is a process that converts fresh curds (raw cheese) into cheese full of flavour. The research of the method of cheese ripening process is used Proportional Derivative Integral (PID) controller to control the parameters of temperature and humidity in the cooling room. Embedded through ATMEGA 16 devices as controllers, the sensing process is used by temperature sensors, humidity sensors and Peltier devices as coolants for the ripening process. The desired temperature setting is 16-20°C with a% humidity level. After the room temperature is reached 16-20°C with% humidity then the cheese material is inserted into the cooler for the ripening process. The working principle of this system is to stabilize temperature and humidity. Test of the results obtained by the value of the parameter controller Kp = 5.53, Ki = 8, Kd = 2, for the 16-200C temperature setting and% humidity. Changes in time from room temperature to set-point temperatures are relatively fast with the overshoot percentage of 11.11% and the rise time of 9 minutes.
GIS for coffee shops classification and routing using Naive Bayes method
Authors: Rohadi E , Amalia A , Bagaskara J D , Harijanto B , Adhisuwignjo S 
Published: January 2020

Abstract
In recent years, the number of coffee shops has grown rapidly in Malang whose locations spread in various places. This condition makes the consumers having trouble to find the place that meets with their needs of the price and comfort level. In this works, the Geographical Information System of Coffee Shop Business Classification in Malang based on criteria is proposed. This system can classify coffee shop data according to the consumer desires using the Naïve Bayes method. Users simply provide a choice of price criteria and desired level of comfort on this website-based system. The classification results are used to make it easier for users to obtain information, both the map of locations and the route to reach the coffee shops that meet the criteria expected by the user. Based on the testing that has been done, 100% of users stated that they could find a coffee shop according to the desired criteria. As a result, the system promises as the application in determining the selection of coffee shops corresponds to the consumer criteria.
Implementation of microservices architecture on certification information system (case study: LSP P1 State Polytechnic of Malang)
Authors: Rozi I F , Ariyanto R , Pramudita A N , Yunianto D R , Putra I F 
Published: January 2020

Abstract
Currently, Technology develops rapidly. This influence in every aspect of life in every field. Ease of use, tools availability, and a higher data transfer rate are the reasons why technology is used massively, it affects certification field as well. Certificates given through certification process is a formal recognition towards professionals in higher education level. The process of certification data is accessed through the website. Usually built with monolith approach which means an application wrapped up in a huge package. When there are any changes in the codes, it will also affect the others. This makes the system more complex, hard to fix the bugs, and hard to do modularization. Microservices architecture offers a slightly different approach, it is about a software architecture’s concept that allows us to make large-scale software be more organized and can quickly adapt to the existing business development. To speed up deployment and testing process by taking advantage of continuous integration, so the development process is more consistent and able to checks the flow of application periodically to reduce possible errors.
The use of decision table for reducing complex rules in software testing
Authors: Joosten J , Permanasari A E , Adji T B 
Published: January 2020

Abstract
The testing phase is always one of the important stages of developing software. Without this stage, software errors will be difficult to find at the beginning of software development. This study uses a decision table method that aims to shorten the rule of software testing. The advantage of this method is that it can help make fewer rule combinations for testing. This study uses a medical information system as a case study. In the medical information system, 20 test cases were identified early in the software testing process. Of the 20 test cases, seven test cases that have the same characteristics so that they can be combined into only 13 test cases. Therefore, it can be concluded that the decision table method can reduce software testing time.
Utilization of virtual reality content for laboratory practicum learning
Authors: Pradibta H , Nurhasan U 
Published: January 2020

Abstract
At present, the learning model with practicum learning methods in the laboratory is considered as an effective learning model. However, from these advantages, there are weaknesses. One of the weaknesses of practicum learning methods is the high cost of learning because it requires much equipment. Digital Learning is an educational concept that utilizes information technology in the teaching and learning process. The concept of learning in digital multimedia is by utilizing virtual reality technology. The concept of virtual reality that simulates the real world into the digital world can be used as a solution to overcome the weakness of the existing learning method. This study provides the development of virtual reality for practicum learning in the laboratory. The knowledge base applied came from scientific experts and used as a rule in learning. The purpose of developing this application is as a prototyping framework of virtual learning that can be applied to laboratory practicum learning.
Characteristic of flame length on spuyer diameter in conventional LPG stove
Authors: Dionisius F , Firdaus S , Maulana M E , Carudi C , Badruzzaman B , Suliono S 
Published: January 2020

Abstract
Biogas is an alternative fuel in the form of gases derived from dirt or waste. In general, biogas is used as a fuel source for cooking stoves for daily needs. The stove has a special design so it has not been reached by the community, especially in the countryside. One alternative to solve this problem was to modify the spuyer of stove of conventional LPG to be compatible with biogas fuel. The purpose of this paper was to determine the ability of conventional LPG stoves in terms of flame height to the diameter of the spuyer hole on the stove. The variation of the hole was 2; 2.5; 3; and 3.5 mm in diameter. The conventional LPG stove used the Rinai RI-511E type with medium of input control. While the biogas pressure from the digester to the stove was 0.106 MPa. The results showed an increase in flame height from 30.79 mm to 166.95 mm if the spuyer diameter was enlarged from 2 mm to 3.5 mm. So that the increase of flame height could reach 442.22%.
Optical fiber temperature sensor design
Authors: Isnomo Y H P , Zakaria M N , Junus M , Anshori M A , Aisah A 
Published: January 2020

Abstract
The optical fiber sensing system is free from the effects of electromagnetic wave interference and radio frequency interference. The temperature difference between the incoming light source at one end of the fiber optic cable and the temperature of the sensor will cause a difference in wavelength between the incoming light source and the light reflected by a sensor or passed by a sensor. The difference in wavelength will be converted into RGB value, then the RGB value will be converted into a temperature. It becomes a strong reason why this research takes the topic of temperature sensor design using fiber optics. The method to design fiber optic sensors used in this research is experiment, such as: - heating the ends of the fiber optic core with analytic splicers so it will obtain spherical and oval shape of the optical fiber end, -peeling the jacket between two ends of the fiber optics and coating optical fiber with plates. The calibration and validation method is using RMSE (Root Mean Square Error) of the temperature which measured by Infrared thermometer and optical fiber sensor designed in this research. The test results for temperature measurements between 303oK to 543oK by using optical fiber sensor designed by researcher show that the reflected light model has error 1,596683 and forwarded light model has error 1,029278.
Gamification based mobile application as learning media innovation for basic programming lessons
Authors: Hidayat W N , Fitranti A , Firdaus A F , Kartikasari C D I , Sutikno T A 
Published: January 2020

Abstract
Basic Programming is a productive subject in the study of ICT Vocational High School programs that require students to develop information systems in accordance with the times. Lack of applicative material in basic programming subjects is a problem that is often encountered so that the level of critical thinking of students is less than optimal. In addition, the level of student interest in these subjects is less than optimal because of the monotonous implementation of learning. The solutions offered through this study aim to produce gamification-based mobile applications as innovative and communicative learning media. The development method used is the ADDIE model (Analyze, Design, Development, Implementation, and Evaluation). The result shows the total usability level is in 81.75%. Material validation shows the results in 88.89% and validation from media experts is 80.83%. Test results on the small group trial subjects shows 84.4% valid and the large group 85.22% valid. Based on the results of product usability testing and field trials, it can be concluded that the product is suitable for use as a medium in the learning process. The concept of gamification in this media also increases the attractiveness and motivation of users in order to obtain maximum testing results.