bluuebunny/crossref_metadata_2025 huggingface dataset:
Hydrotechnical structures
Authors: Abdrazakov F , Pankova T , Orlova S , Mikheeva O , Mirkina E , Mizyurova E
Published: December 2020

When using modern methods of analyzing information about accidents at hydrotechnical structures, one can make forecasts of the probability accidents and calculate the possible consequences. Estimation of qualitative and quantitative characteristics of the accident at HTS barrage regulatory structure on the river Bolshoy Uzen near the village Alexandrov Gai of Alexandrov-Gai district Saratov region, the emergency situations and their consequences was carried out in accordance with the decree of the Government of the Russian Federation dated 21.05.07 N° 304 “On the classification of emergency situations of natural and technogenic character” (with amendments and additions of May 17, 2011). According to the decree of the Government dated 21.05.07 N° 304 “On the classification of emergency situations of natural and technogenic character” the accident at HTS barrage regulatory structure of Alexandrov-Gai district refers to the emergency situation of municipal character, as in the breakout barrage regulatory structure the emergency zone does not extend beyond the territory of the municipality; in the case of hydrodynamic accident the life of people, property of individuals and legal persons, the environment will not damage, and the total amount of detriment caused by damage to the health of 1 person and water supply disruption (the most difficult situation), will not exceed 5 million rubles. The object is not potentially dangerous.
Construction and testing of a parametric criterion of mechanical damage of an employee or an athlete based on the model “impact - weakening - carrying capacity”
Authors: Esipov Yu V , Mamatchenko N S , Bochkova E A
Published: December 2020

The issues of concretization and expansion of the parametric model “impact - weakening - carrying capacity” application for describing injuries to workers in both mechanical engineering and sports are considered. Based on previously obtained results from other studies, injuries were selected and described by severity (mild, moderate, severe). For quantitative assessment of injuries that often occur both in production and in sports, the article developed and tested a parametric criterion for mechanical damage of an employee or an athlete based on the model “fuzzy impact - fuzzy bearing capacity”. The results obtained can be useful for a comparative analysis of working and sports conditions and substantiation of methods and means of protection against the negative action of mechanical factors.
Ensuring safe working conditions during the operation of foundry equipment
Authors: Manokhin V Ya , Golovina E I , Ivanova I A , Karagodskaya Yu S
Published: December 2020

Human activities in industrial production are subject to the risk of occupational diseases. This problem is of particular relevance in the working area of foundries. Prevention of occupational diseases and reduction of the concentration of pollutants in the atmospheric air of the working area is one of the many complex tasks associated with the assessment of the elemental and dispersed composition, as well as the density of distribution of particles of multicomponent dust. The aim of the study is to assess the elemental and dispersed composition of dust, which determines the hygienic state of the working area of the foundry. Results of the research. In order to develop a mathematical model, the particle size was estimated. The elemental composition of the dust has also been determined. A significant amount of fine dust and iron (48%) was found, which is associated with the processing of casting with iron shot. Having carried out statistical processing of experimental data on dispersed dust analysis and using the known distribution laws: normal, normal truncated, gamma distribution, Weibull distribution, an empirical dependence of the distribution density of the number of particles depending on their size was obtained.
Energy-saving tillage with a combined unit with universal working bodies
Authors: Lachuga Y , Akhalaya B , Shogenov Y , Meskhi B , Rudoy D , Olshevskaya A
Published: December 2020

The need for minimal tillage is due to the reduction of energy and labor costs for the operation. In modern technologies for the cultivation of agricultural crops, processing accounts for up to 25% of labor and 40% of energy costs. The purpose of the study: the development of a combined tillage unit with a universal working body that increases the quality of minimum tillage, the stability of the unit movement with an increase in functionality.
Investigation of external signs of energy activity of a whole plant depending on the dose of environmental factors
Authors: Klyuchka E , Kuznetsov D , Gaponov V , Dudnik V , Lukyanov A
Published: December 2020

Information in the scientific literature is, in the future, the basis for the development of a methodology for normalizing the dose of environmental factors with an assessment of the energy activity of a plant organism. The experience and prospects of using databases for the analysis of natural and artificial factors of the environment in relation to closed systems with an artificial microclimate are discussed. The growing understanding of the ineffectiveness of the empirical approach to the formation of an artificial microclimate makes it necessary to consider the issue from the point of view of dose dependence and biological effect. The purpose of the study is to create an electronic database “Investigation of signs of plant energy activity on the dose of environmental factors”, on which the methodology for standardizing the artificial microclimate in greenhouses will be based.
Relevance of long-jet sprinklers use when watering potatoes in the northwestern region conditions
Authors: Morozov V , Fedorova Y , Telpuk M
Published: December 2020

The authors note the relevance of potato irrigation in the North-West region of the Russian Federation. The meteorological characteristics of the region are given, the need for irrigation in the first half of the growing season is noted. The objects of research were potato varieties of the mid-early and mid-season groups: Spring Belaya, Lomonosovsky, Charoit, Real, Gusar, Lilac fog, May flower, Peter’s Riddle. The studies were carried out in 2018 - 2019. at the experimental field of the Velikie Luki State Agricultural Academy. The results of the study of the influence of the use of metered irrigation in the first half of the growing season on the increase in the productivity of the improved seed material of potatoes are given. The article presents the results of assessing the productivity of these varieties of potatoes.
Greenhouse microclimate control
Authors: Kokieva G E , Trofimova V S , Fedorov I R
Published: December 2020

Extensive data have been accumulated indicating that for the regions of the Far North, the most effective are opaque greenhouses with enclosing structures of sufficiently high resistance to heat transfer, providing for the cultivation of plants under artificial or joint (semi-opaque greenhouses) lighting. From 1 m of such structures, you can get 140 … 300 kg of vegetables per year. To maintain a certain air temperature in greenhouses, mainly two heating systems are used: water and air. Extensive data have been accumulated indicating that for the regions of the Far North, the most effective are opaque greenhouses with enclosing structures of sufficiently high resistance to heat transfer, providing for the cultivation of plants under artificial or joint (semi-opaque greenhouses) lighting. From 1 m of such facilities, you can get 140 … 300 kg of vegetables per year. When growing plants in cultivation rooms in winter and spring, it is necessary to artificially maintain climatic factors affecting the growth and development of plants. In this regard, the automatic regulation of these factors in accordance with the requirements of agricultural technology is of great importance. To automatically maintain the temperature in greenhouses, a two-position control system is used. Large-scale greenhouse production is currently developing along the path of introducing technologies for intensive cultivation of vegetable crops and the use of automated control systems for technological processes based on micro- and mini-computers. One of the important technological processes is watering and feeding plants with mineral fertilizers. The need to automate this process is associated with the laboriousness of the process of preparing solutions, accurately maintaining a given concentration of substances in them, timely supply and uniform dosing over the entire area of the greenhouse under various disturbances of the external environment.
Food technologies and their environmental impact
Authors: Antipov S , Khozyaev I , Panfilov V , Rudoy D , Shakhov S
Published: December 2020

Humanity has long been striving to realize the deserted technologies for obtaining food. For its implementation, it is necessary to detail the technology as a way of organizing natural processes that are aimed at creating artificial objects, in particular, food. To implement a deserted method of food production, it is necessary to use technology. Technology in the article is considered as a man-made material that is uses to expand the capabilities in food production. We consider technical means of food technologies as integral material systems that function and develop in the environment. The purpose of the work is to study and develop trends in the engineering strategy for the development of food technology, taking into account the possibilities and advantages of adaptive control of a technological system with a wide range of variability in the properties of controlled objects, including in conditions of information uncertainty. We have analyzed the dialectics of the development of food technologies. On its basis, an engineering strategy for the development of food technology techniques has been developed. Identified technical and technological trends that provide for the development of mechatronics, the creation of new equipment, as well as lines that implement new machine technologies. The task is to consciously activate the process of creating a new food production technique using the laws of dialectics.
Requirements to IT support of oil refinery supply chain
Authors: Koronatov N , Ilin I , Levina A , Gugutishvili D
Published: December 2020

One of the factors that ensure the efficiency of any enterprise is effective supply chain management, in which the enterprise is a par-ticipant. The purpose of this article is to describe and model the supply chain of the oil refining industry and formulate requirements for IT sup-port for supply chain management. As a result, the place of refining pro-cesses and related logistics in the supply chain of the oil industry was determined, a model of the supply chain of a refinery was formed, a high-level architecture of IT support for this chain was proposed, and high-level requirements for IT services of IT architecture subsystems were developed.
CALCULATION OF CHANGE ORDER FOR ROAD PROJECTS IN JAKARTA
Authors: Waty Mega , Sulistio Hendrik
Published: December 2020

Change order is a written agreement to modify, add or provide alternatives to the work that has been arranged in the contract document between the owner and contractor, where the change can be considered to be within the scope of the original / original project, in other words this is a modification contract required . This study aims to obtain a large percentage of change orders both added work and underemployed work and get the largest change order in the form of changes in public works and added work and underworked on road projects in Jakarta. From the 10 projects studied, the results obtained include: The largest average percentage (COR) of Road Projects in Jakarta is: Hot Asphalt Mixture (44, 72%), average percentage (CORS) of road projects in Jakarta is: Medium quality concrete f’ c 20 MPa for roads 54.9231%, (CORA) road projects in Jakarta is: Laston Lapis Antara (AC-BC Mod) (As buton) 21.55%
Experimental study on the crashworthiness response of hybrid Al/GFRP crash-box structures under axial compression loading
Authors: Asti Rosalia Citra , Setya Putra Ichsan , Dirgantara Tatacipta , Jusuf Annisa , Hadi Bambang K.
Published: December 2020

In this research, the dynamic crushing behavior of crash boxes made of aluminum reinforced with Glass Fiber Reinforced Polymer (GFRP) with circular cross-section is presented. Energy absorption capacity and damage behavior for different composite wall thickness and fiber ply orientation were investigated. The result shows that adding composite layers to the aluminum column will improve the column’s energy absorption capacity. Nevertheless, the Specific Energy Absorption (SEA) of the aluminum structures generally higher than the hybrid systems. However, the hybrid column has higher crushing resistance than a combination of separate aluminum and composite crash boxes with the same geometry. This shows that interaction between aluminum and composites enhance the crash behavior since a stable and progressive crushing mode were observed, resulting in greater energy absorption. Additional research should be carried out to investigate further.
Raw materials inventory analysis with Bayes-fishbone and safety stock in PT. XYZ
Authors: Djuhana Monica , Gozali Lina
Published: December 2020

Inventory control in a production process needs an optimal management to prevent production delay and be able to meet its recruitment. Its condition is affected by the quantity and time accuracy which hold impact of the production process. This study aimed to know whether the inventory in PT. XYZ, a detergent manufacturing company in Tangerang city, was in optimal condition and what are the affected elements using the Bayes-fishbone method. Bayes-fishbone method will show the biggest to the smallest causes of a problem through a visual representation. Later it’s discovered the biggest factor of stock out inventory is 33% by the returned goods material and misfit quantity, 25% by miscommunication with supplier, 17% by bad weather causes lateness, 15% by long lead time, and 10% by sluggish machines. Improvement attempt can be done by figuring out the safety stocks. By using the datas of inventory demands and fulfillments with 90% as the safety factor, the result for each safety stocks are 24 kgs for inventory 1310100000146000, 2.645 kgs for inventory with code 450200000115000, 512 kgs for 1410400000259000, inventory 1010200000454000 needs 18.999 kgs, 55 kgs for 1480200000456000, 1.352 kgs for 1460200000457000, and 587 kgs for inventory with code 1410100000465000.
Characterize of Corrosion Rate and Mechanical Properties of Low Carbon Steel in Potassium Chromate Solution
Authors: Siahaan Erwin , Rosehan
Published: December 2020

Corrosion is one of the degradation materials in Industrial problem. One of the processing to choose material is to determine how to have resistance to all the environment. This research is carried out to determine characterize the effect of various temperatures (150, 200, 250 °C) and time (4,6 and 8 hours) of exposure of Low Carbon Steel in corrosion rate and mechanical properties by using Mass Balance method and Potassium Chromate vapor as medium corrosion. The results have been shown that the increasing temperature ids increasing corrosion rate which is the maximum value is 5,1215 x 10−4 miles/years. The difference in corrosion rate increasing by 6,3 % based on increasing temperature. The microstructure has shown is intergranular corrosion mode.
Determination of minimum trucks and routes used in the case of municipal solid waste transportation in Bandung City with greedy algoritm
Authors: Alim Habibi Nur , Yanuar Ridwan Ari , Bayu Setyawan Erlangga
Published: December 2020

This study discusses the determination of the minimum number of trucks and the route of transporting the municipal solid waste, where the trucks provided have the heterogeneous capacity, namely 2 trucks with a capacity of 6 m3, and 2 trucks with a capacity of 10 m3. In this study, the heuristic method uses the greedy algorithm because it is expected that the optimal local will produce a global solution so that the expected total cost can be optimal. Based on trials conducted, obtained 3 solutions that might be used, the solution chosen using 2 trucks with a capacity of 10 m3.
Development of Web Crawler to Build Indonesian Text Corpus
Authors: Hendryli Janson , Mawardi Viny C
Published: December 2020

Recent improvement in natural language understanding research can be attributed to the availability of large scale datasets. Those datasets are mainly in English. In this work, we develop a web crawler with the purpose of extracting Indonesian news content from the DetikNews website and building a large dataset of texts. The web crawler is developed by following the waterfall model using Python, Scrapy, and BeautifulSoup4. It collects more than 790k news from DetikNews, spanning from 2011 to 2020, which consists of a total number of more than 190 million words, almost 2 million unique words, and more than 14 million sentences.
Design Development of Financial Citizenship Model for Women in Indonesia
Authors: Roni Setyawan Ignatius , Ramli Ishak , Listyarti Indra
Published: December 2020

This study aims to determine and find financial decision making models using information technology and concepts of women’s understanding of financial inclusion. The financial decision making in families that is suitable to provide understanding of women in understanding financial inclusion and information technology of financial technology. Prior to this research we will map the information technology and the understanding of women’s financial literacy in two regional locations: Pacitan and Tangerang Regency. These two regions have unique geo characteristics and different paradigms of the women’s mindset, and the proximity of the region to the capital. Pacitan Regency experienced a significant increase in the small and medium businesses, mostly carried out by women (mothers).

This research is planned to use Structural Equation Model (SEM) with Partial Least Squares (PLS) nonlinear regression technique, We analyze the 300 primary respondents’ questionnaires’ data collected from women in Pacitan and Tangerang regency from September until November 2020. Affordable population of the study, each district will be taken as many as 150 respondents. from respondents from both regions. The expected outcome is a model of mapping women’s knowledge of financial inclusion and behavior of women in financial decision making and understanding of financial products in Pacitan and Tangerang Districts to reaffirm the context of financial citizenship namely financial literacy and inclusion referring to Hennings and Machado [6] and Listyarti [11]
Study of Lighting, Humidity, and Ventilation in RISHA Design at Kampung Deret Petogogan, Jakarta
Authors: Fang Fanuel , Bambang Susetyarto M. , Lianto Fermanto , Hendra Siwi Samsu
Published: December 2020

Kampung Deret Petogogan program is considered successful in changing the face of housing that was previously shabby, neatly arranged with sturdy houses, and housing facilities. Slums are no longer visible in the settlement. Residents now live in a cleaner, neater, and more comfortable environment than before. The government also plans to make the Kampung Deret Petogogan a model for other slums. For this reason, an evaluation is needed whether the housing built with RISHA (Healthy Simple Instant Home) technology has met the health and comfort aspects, including lighting, humidity, and ventilation of a house. The method used in this is an observational study with a qualitative understanding of architectural phenomena in the field based on theoretical knowledge references. Data collection was carried out through direct observation in the field and interviews with the chairman of the community forum o/Kampung Deret Petogogan. The data obtained is compared with the required criteria related to aspects of lighting, humidity, and ventilation of the dwelling. Field findings show that the design of RISHA in the Kampung Deret Petogogan has not met the health and comfort criteria of a house, as seen from the lack of achievement in design related to lighting, humidity, air circulation, and ventilation. There is a need to adjust the RISHA unit’s design to make it a habitable residence that can be applied to other slums.
Comparation Study Performance Diesel Engine Using Biodiesel with Secondary Data
Authors: Muhammad Febriansyah Iqbal , Riza Abrar , Darmawan Steven
Published: December 2020

Biodiesel is one of the diesel engine fuels with a mixture of fossil fuels with the addition of vegetable oil fuels. Biodiesel is expected to compete with other fossil fuels. The purpose of this research is to get a trend in the performance of Diesel engines by using biodiesel against fossil fuels so as to obtain the characteristics of biodiesel fuels. Conduct a comparative study of each different type of biodiesel. Get an upward or downward trend in biodiesel fuels against fossil fuels so as to obtain the characteristics of biodiesel fuels. Diesel engine performance that is concerned is torque, power, specific fuel consumption. The best diesel engine performance requirements are torque value, power and specific fuel consumption decreases. The method of data collection is done using secondary data from the results of previous studies that have been published. This research uses palm oil, jatropha curcas oil, calophyllum inophyllum oil, gossypium arboretum oil, brassica napus oil, and hevea brasiliensis oil. The best Diesel engine performance is found in B25 jatropha curcas oil biodiesel with an increase in torque value of 6.49%, an increase in power value of 6.49%, and a decrease in the value of specific fuel consumption by 17.78%.
Risk Identification in Procurement of Glass facade in High-Rise Office Buildings in Jakarta
Authors: Tanumihardja Reinaldi , A. Simanjuntak Manlian Ronald
Published: December 2020

This study aims to identify risks at the procurement stage of the glass facade of office buildings in Jakarta. In this study, the procurement phase was analyzed using the PMBOK reference (5th edition). In this research, the most dominant risk will be discussed at the stage of glass facade procurement in high-rise office buildings in Jakarta. After the dominant risk obtained from the analysis, the prevention and recommendations will be discussed. The number of risks that occur during the procurement process can certainly hamper the project. These risks can cause to the project completion time that are not in accordance with the project schedule. Besides that, the risks could make the project cost even greater. This certainly can lead to big loss to the project. Therefore, it is very important to identify the main risks at the procurement stage from the beginning of the construction process. According to the PMBOK, the stages of the procurement is divided into 4, which consists of plan procurement, conduct procurement, control procurement and close procurement. Based on the research results, obtained 47 risks that are divided into 4 phases of the procurement. Based on expert validation, 42 risks out of 47 risks were used in the analysis. This study uses the SPSS program to determine the most dominant risk. The SPSS results show that the variables X33 and X39 are the most dominant risks in the procurement stage of high-rise office building glass facades in Jakarta. These variables are the risk of material defects (X33) and late in ordering material (X39).
Proposed assembly line balancing using mixed integer programming to minimize idle time of union fuselage
Authors: Sasmita Dewi Ni Putu Cynthia , Damayanti Dida Diah , Astuti Murni Dwi
Published: December 2020

This study is aimed to help the company doing an assembly line balancing to minimize station time as not to exceed takt time and minimize idle time between workstation, using Mixed Integer Programming (MIP) method with Multi-manned Assembly Line Balancing (MmALBP) approach using two mathematical model, which 1st model aimed to minimize the cycle time of all workstation, then those cycle time being a parameter in 2nd Mathematical model to specified the optimal number of workers also balancing workload between operators. Result from this research were able to minimize station time from 218.56 hour to 166.3 hour so it didn’t exceed the takt time and also could reduce total idle time until 45% from 905.2 hour in actual condition become 499.49 hour with decreased number of operator from 52 to 22 person, and increase the efficiency of assembly line from 54% in previous to 67% in the proposed line.
Performance Evaluation of Dual System Structure with Belt Truss
Authors: Prasetyo Utomo Dwi , Soegiarso Roesdiman
Published: December 2020

In structural engineering applications, boundaries of building deflection or interstory drift are important issues. In tall buildings that are more than or equal to 60 floors in the current era, the Belt Truss System is used in the building structure. The function of the Belt Truss is useful to reduce deflection that occurs in buildings by converting the building’s moment to the axial column of the exterior column. The Structure of the Belt Truss itself can use reinforced concrete structures and steel structures. Because the Belt Truss structure is an innovation in the world of structural engineering, the earthquake load parameter values do not depend on the applicable Building Standart Codes. Standard Codes of Earthquake Resistant Building require parameters of the Response Modification Coefficient (R), Over Strength Factor (fΩo), and Deflection Amplification Factor (Cd) for determining earthquake loads. Because the parameters in the Belt Truss structure are not listed in the Standard Codes of Earthquake Resistant Building, the earthquake load parameters of the Belt Truss were determined. The method used in this research is literature study using Pushover Analysis according to ATC-40 and FEMA 356.
Accuracy comparison methods between putro’s method with husain’s method for validating damaged physical documents
Authors: Wibowo Putro Prasetyo Adi , Parada Tambunan Andi , Bagus Pandu
Published: December 2020

To face with digital divide challenge in e-government implementation, we can combine manual and electronic processes in government administration. To be able to validate in an electronic scheme two methods have been proposed each by Putro and Husain. This study will compare the accuration the validation method between perceptual hash proposed by Putro with the method proposed by Husain for validating damaged physical documents, especially those caused by a disaster. This quasi-experimental study was conducted by comparing the hash value of the original document with those of six variations of the document’s damage. While the type of document for testing includes: text, image, and combined text-image documents. As a result, Perceptual hash proposed by Putro is better than Husain’s method for validating physical documents because of its tolerant 4 out of 6 types of damage.
E-Commerce application for selling “Blue Salt” products and general fish maintenance tools for koi fish treatment
Authors: Budiman Martinus , Santun Naga Dali , Rusdi Zyad
Published: December 2020

In maintaining koi fish, extra care is needed and must be done carefully. The use of information systems in the sale of fish care products is needed for marketing and sales development. This study aims to evaluate the influence of website applications for the sale and marketing of products from “Blue Salt”. Data collected by conducting interviews with the owner of “Blue Salt”. This website application provides information about “Blue Salt” products and makes it easy for customers to place an order. because this web site application can be opened anywhere and anytime, customers are able to find out information about the products sold and can buy products without having to come directly to the store. This web application also hopes to help the owners of “Blue Salt” to market their products and expand their markets.
Retrieval Based Chatbot on Tarumanagara University With Multilayer Perceptron
Authors: Ciayandi Andrew , Christanti Mawardi Viny , Hendryli Janson
Published: December 2020

Natural Language Processing or NLP is a branch of Artificial Intelligence that focuses on processing language. One of the implementation of NLP is in the field of customer service in the form of chatbots. Tarumanagara University itself already has a customer service called Admission Tarumanagara. Admission can be contacted by telephone or sending an e-mail message. Making Chatbot will add ways to get information about Tarumanagara University. Chatbot is a computer program based on artificial intelligence that can simulate conversations between people. The system created is a Retrieval Based Chatbot system that can recognize user questions and answer user questions directly. Making a chatbot system will use a model with the Multilayer Perceptron method. The process for the system will go through two stages, namely the preprocessing stage and the introduction stage. The preprocessing stage consists of case lowering, tokenizing, and stemming. After that the model is made and the introduction phase of the trained model is carried out. Chatbot that has been made can be accessed using the LINE application via LINE ID @764vvcfm.
“Serenade Tower” Hack and Slash Game
Authors: Leonardo  , Pragantha Jeanny , Andana Haris Darius
Published: December 2020

“Serenade Tower” is a hack-and-slash game build for PC platform. Player will play as Hero to slay monster and destroy a tower called Serenade Tower which cause misfortune. “Serenade Tower” use keyboard as the main control to character movement such as moving, attacking and using skill. This game created by Unity game engine with C# as the programming language. Testing has been done by Black Box Testing, Alpha Testing by lecturer and Beta Testing by sharing and doing survey to 30 respondent. The result is the game have neat and nice user interface with balanced gameplay.
Web-based Live Chat Application uses Advanced Encryption Standard Methods and Rivest Shamir Adleman
Authors: Kho Edwin , Christanti Mawardi Viny , Jaya Perdana Novario
Published: December 2020

The development of technology, especially in the data security system in maintaining the security of information data has been growing rapidly. In maintaining the security of information data there are branches of science in its development such as cryptography and steganography. In its application is not only done on one security technique, but can be done in combination with information security data. This study aims to create a data security system by implementing cryptography on messages in the live chat application. The message security in live chat applies a combination of AES and RSA algorithms. The AES (Advanced Encryption Standard) method is a cryptographic algorithm that can be used to secure data, the AES algorithm is a symmetric chipertext block that can encrypt and decrypt information, and the RSA Method is the RSA Algorithm is a block cipher algorithm (an algorithm that works per block of data) that groups plaintext into blocks first before being encrypted to become ciphertext. This application aims to secure messages sent by the sender to stay safe when received by the recipient. The system will be based on a website using the PHP programming language, using a codeigniter framework and a MySQL database. This information system is in the form of live chat which will be encrypted by 2 methods. The sender will send a message through the live chat website then the message is encrypted so that its security is guaranteed, the message stored in the database will be automatically encrypted by the two methods applied then after arriving at the recipient the message is automatically described. The message sent is in the form of text and png files.
Resume extraction with conditional random field method
Authors: Anggakusuma Jason , Christanti Mawardi Viny , Dolok Lauro Manatap
Published: December 2020

Information extraction resume is a system used to carry out the automatic information extraction process on resumes of prospective employees to obtain key information including information on names, skills, educational experience, work experience, awards which are the main components in a curriculum vitae of prospective employees. Conditional Random Field (CRF) is one method that can be used to extract information. The step taken in the information extraction process is an annotation documents, tokenization, labeling on each token in the document, feature extraction, and the formation of models that will be used at the classification stage. In this study a system was built that could be used to extract CVs from users in pdf format. This study uses a CV from LinkedIn. Information extraction is done using 15 features and 11 classes. The evaluation of information extraction system for the employee’s resume has a precision value of 85,052%, a recall value of 85,052%, and an f-measure of 78,527%.
WIM data analysis for the fatigue lifetime evaluation of standard steel truss bridge elements
Authors: Mulyadi Endang , Suangga Made
Published: December 2020

Bridge in Indonesia is designed using bridge loading standard SNI 1725:2016. Bridge is an infrastructure that withstands dynamic and repetitive loading. Vehicle load in this regulation are idealization of actual vehicle load. Weigh in motion (WIM) technology allow the measurement of vehicle load when vehicles moving, which is the actual load of traffic received by road and bridge. The effect of this loading on the bridge element, especially steel girder on Steel Truss Bridge type, there is repetitive occurrence of stress and relaxation due to vehicle loading in service life that can make the bridge failed due to fatigue. The purpose of this research is to evaluate the fatigue lifetime of steel truss bridge elements due to projection of accumulated vehicle load from WIM data. The bridge that will be evaluate on this research is 60 meters span steel truss bridge using WIM data of the Kaligawe Bridge, Semarang. This analysis was conducted by using stress range-number of cycles from structural analysis of accumulated WIM vehicular load, and compared to nominal fatigue resistances using stress range cycles-number curve (S-N curve). Evaluation method of fatigue with S-N curve method are specified in SNI and AASHTO. Evaluation results indicated that the fatigue limit of 50 year lifetime services on S-N curve which has not been surpassed and projected, the fatigue lifetime of the bridge would be on the 54th.
Study of flood discharge due to land use and population change of Way Pisang watershed
Authors: Ariyanto Lilik , Purna Irawan Agustinus
Published: December 2020

In some areas in Indonesia, especially those around rivers that develop into urban areas are always faced with the problem of flooding in each rainy season. Soil surface characteristics can affect surface runoff in some areas. In general, human activities will increase along with the rate of population growth which results in increased land conversion activities to meet the economic needs of an area. This study will examine the level of population growth around the Way Pisang watershed in South Lampung Regency in 2007 and 2019, which is expected to influence land use change as a result of activities to meet economic needs, which in turn will have an impact on changes in the drainage coefficient resulting in an increase flood discharge in the watershed. The results of this study can be concluded that from 2007 to 2019, population growth in the Way Pisang Watershed increased by an average of 9.62%. With population growth accompanied by changes in land use where forest area has decreased 81.39%, paddy fields 52.90% and shrubs 85.54%. While the area of settlements increased by 56.10% and dry agricultural land/gardens increased to 147.62%. This resulted in an increase in drainage coefficient of 102.18% which in turn resulted in an increase in flood discharge on average by 28.82%.
Design and Realization of Microcontroller-based Sound Level Meter Calibration Devices
Authors: Setyaningsih Endah , Bayu Ramada Meikaharto R. , Candra Henry
Published: December 2020

A noise measurement device is a sound level meter. A measurement device, like the sound level meter is best calibrated first, so the user knows how precise the device is. In association to the usage of the measuring device, several cases of different measurement results have occured. Those cases can be resolved by calibrating the device. Calibration is a set of actions that form a relation between the value displayed by the measuring device or system, or a value represented by measuring material, with known values related to values measured in certain condition. The design and realisation of the sound level meter is done automatically without moving the measuring point’s selector. This device utilises processing modules, Wi-Fi modules, a dashboard on a laptop and a Band Pass Filter (BPF) module. The BPF module on this device will function as a filter that releases certain frequencies at certain ranges and atenuate the signals with frequency outside the range. The BPF module will wilter sound sources coming from the software, DAQARTA, which has already been installed to the laptop. The sound source is an input for this calibration device. The sound that has been filtered by the BPF module is passed on to a speaker, which is an output from the designed device and measured by the sound level meter that has received a calibration certificate by LIPI. The device can fulfil the standards of ISO/IEC 61672-1 : 2017 “Electroacoustic-Sound Level Meters” at a frequency point of 125 Hz - 8000 Hz, with a value difference from the standard as much as 4,39% - 4,89%, accuracy level intensity A-weighted and C- weighted with a range of98,28% - 100% at a point of 125 Hz - 8000 Hz and precision value of 100%.
Product Recommender System E-Commerce Application Using Genetic Algorithm
Authors: Sutjiadi Ivan , Saribu Manatap Dolok , Mulyawan Bagus
Published: December 2020

With a large amount of products available to purchase in an e-commerce website, these website owners will face a challenge where customers might have a difficulty on choosing the right products for them and these website owners also need to promote their products to the right audience. Therefore, a recommender system will be developed to help the website owners giving a product recommendation for their customers based on the category of the products as an approach using Genetics Algorithm and Fuzzy Sets. In this study, the fuzzy set algorithm is used to determine the suitability of product rankings between the ranking of the categories to be recommended and then these results can be continued using genetic algorithms to find a set of products that have the appropriate suitability values for use as the final output which is the actual set of products that will be recommended to the customers.
Sparepart sales clusterization and prediction using automatic clustering algorithm
Authors: Tirta Helmy , Perdana Novario Jaya , Mulyawan Bagus
Published: December 2020

Creating an information system for a store becomes an important part in a business process as an effort to facilitate the running of the business process. Therefore, the existence of this information system will make it easier for the store to get information on products, recording the number of products entering and leaving, supplier information and can predict the number of sales in the coming month. Prediction of sales in the coming month is very important to facilitate the store in preparing stock of product in the coming month. The design of this program applies the automatic clustering method and fuzzy logical relationship that manages the historical data of the number of sales each month in the previous period, so we get a prediction of the number of sales in the coming month, which is useful for the store in preparing the amount of stock in the coming months. Based on the results of tests conducted, this program can provide predictions of the number of sales in the coming months. Tests are carried out on two product samples, where the products tested have an accuracy level of 86.20% and 90%, respectively.
Design and fabrication of ball burnishing tool for surface finish
Authors: Prabhu L. , Krishnamoorthi Sangeetha , Akbar Muhammed Adil , Mubashir P , Prashob P
Published: December 2020

In the recently growing trends among the different fabrication processes, it is necessary to produce the compressive residual stress for the various components. Burnishing process improves the physical and mechanical properties and also the surface finish of the products to be manufactured. Due to the advantages like simple in operation and chip less process after manufacturing this ball burnishing method is considered to be the attractive process. It is a method applied for providing residual stresses at the surface layer and also to reduce the machined surface roughness. There are different methods available for producing surface finish of the components which includes burnishing method also. This process is mainly used in industries in order to increase the quality of the parts produced and also to have a fatigue resistance. This paper presents about the different ball burnishing methods and tools available in the recent trends. By controlling the different parameters, the methods of performing burnishing process is studied in the paper.
Performance and emission characteristics of citronella oil as an alternative fuel
Authors: Senthil J , Prabhahar M , Singh Shashish , Poudel Rajan , Vivek Kumar Achari V
Published: December 2020

The diesel engine fuelled by direct injection with DEE and biodiesel mix of Citronella oil is observed for performance and emission. The properties of Citronella biodiesel fuel are observed and blended with diesel fuel in diversed ratio. Also the experiments were conducted with and without Diethyl Ether additive. As the citronella is available crop all over the globe and especially in India, the source would be perennial. Based on the experimental result, graphs were plotted to indicate the performance and it is found that the emission of carbon monoxide (CO), Carbon dioxide (CO2), Oxides of nitrogen (NOx), Unburnt hydrocarbons (HC) and smoke were less compare with base fuel.
Design and static analysis of polymer composite wind turbine blade
Authors: Lakshminarayanan N , Senthil J , Alvin raja A , Jesudawson Silvanus N , Satish
Published: December 2020

Wind power is one of the world's fastest-growing energy sector and relatively mature technologies. Wind power is changing the wind energy into electricity, in which the blade plays a very important role. At present large-scale wind turbine blades are almost made of composite materials. Composite materials are a kind of new materials. Because of its high strength, stiffness, weight-lightness, resistance to fatigue, vibration, high temperature, easy-to-design, etc, the composite laminates plates have been widely used in the wind energy field. Therefore, blade vibration analysis, structural design technology and composite materials technology are closely linked. This is a paper on static analysis of polymer composite material for wind turbine blade. By an analysis using CATIA a better wind turbine profile is to be obtained with increased efficiency of energy generation and reduced damage due to vibration.
Experimental Investigation of Composite Material in Boat Hull
Authors: Ashokkumar S , Antony Casmir Jayaseelan G , Akash A , Bharathi Raja V , Abeesh A
Published: December 2020

Natural composite materials have been used in many fields of our lives to save the environment. Especially, Teak sawdust and wood ash due to its environmental sustainability, mechanical properties, and recyclability have been utilized as many applications like to make boat hull in marine engineering the main objectives of this paper are teak sawdust, wood ash, and sisal fiber are used to make the composite material. This experimental focus on the change in mechanical properties of wood ash, sisal fiber with epoxy resin matrix with different volume ratios of teak sawdust reinforcement fabricated by using the hand layup method. For this purpose, a composite material with various weight percentages such as 10% of teak sawdust (R1) and 20% of teak sawdust (R2) reinforcements have been developed with 150 and 300 microns particle size and its compare with the mechanical properties of the Impact resistance test, hardness test as well as mainly to compare the water absorption test properties of composite materials has to be analyzed in detail.
Design of stable controller attachable Anti Roll System (ARS) for vehicles
Authors: Prakash S. , krishnamoorthi Sangeetha , Rai Vivek , Kumar Rohan , Gupta Suraj
Published: December 2020

The most common problem which will be faced in hilly areas or in inclined roads is rolling back of vehicle when it has to be start up and move forward. There are numbers of accident reports happens in hilly regions caused due to rolling back of vehicle. Mostly drivers from the plane areas have to face this type of problem while driving in hilly areas. So we have designed a system which will avoid the rolling back of a vehicle and it will not stop the vehicle from accelerating forward. This function can be achieved by using the ratchet & pawl mechanism. In costly SUVs & automatic cars there is a feature available called “HILL HOLD ASSIST” to overcome this problem but in which it will require number of sensors, it can hold the vehicle only for 2to 3 seconds then after it will start rolling back and again it have to be activated and all the breaking system have to be modified and manufactured from the factory itself increasing its price and so it is available only in expensive cars. But our designed system is fully mechanical without any involvement of any sensors making it simple, cheap and can be attached additionally in any normal vehicles having disc brake system and there is no time limit in our designed system once it is activated it will remain activated unless the driver will not deactivate it. This system will allow the freedom to the driver while driving in inclined road; once the system is activated there will be no rolling back of vehicle and no need of applying breaks while starting it.
Heat transfer analysis of thermal barrier in high temperature fluid vessel
Authors: Imthiyas A , Kalyana kumar S , Sai krishnan P P
Published: December 2020

High temperature fluid storage and handling vessels require to maintain large temperature gradient between the fluid surfaces to top of the vessel. This is achieved by the usage of baffle plates. High temperature failure modes such as ratcheting, creep and fatigue damage, mainly under thermal loadings, decide the vessel life. Tests are conducted in high temperature fluid test vessels on models of shells subjecting them to axially varying temperature gradients to simulate thermal ratcheting which affects the free level variations vessels facing high temperature fluid. Baffle plates are used to maintain the temperature on of the surface of the test vessel below 100 degrees centigrade. The transfer of heat through radiation is contained through the baffle plates. The heat transfer analysis of the baffle plates gives clues of the number of baffle plates required to maintain the top surface in the required temperature. The objective of the project is to design the thermal barrier using baffle plates. The initial calculation of required baffle plates is done using theoretical method available in literature. A computer program is developed to perform similar calculations for various calculations with different parameters of design. Theoretical analysis only considers radiation mode of heat transfer which is the predominant mode of heat transfer where high temperatures are present. But in reality both conduction and convection plays a role in heat transfer. At the same time multimode heat transfer is very complex for theoretical analysis. Hence, Finite element method is used to analyze to improve the design of the baffle plate arrangement.