bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research of probability characteristics of current and voltage unbalance based on using graphs of load for the duration at the substation
Authors: Miroshnyk O , Kovalyshyn S , Tomporowski A , Kruszelnicka W , Bałdowska-Witos P 
Published: January 2020

Abstract
The theoretical study and recommendations on the practical application of methods for calculating the probability of asymmetry in the four-wire networks of 0.38/0.22 kV were carried out through using the load curves in the duration at the substation. We cited a group of curves, which show the variation of coefficient of filling the graphs from the share of power consumers in the total load for the consumer substations with different installed capacity.
The research of the spectral characteristics of the voltage inverter exciter bandwidth
Authors: Miroshnyk O , Lysychenko R , Kovalyshyn S , Kruszelnicka W , Bałdowska-Witos P , Tomporowski A 
Published: January 2020

Abstract
The analysis of the structural scheme of the reflectometric system exciter was carried out. We show that the basic block diagram for the construction of range of the inverter is a single ring exciter digital frequency synthesizer. The mathematical model of range of the inverter exciter provides an analysis of the structural schemes of inverter with pathogen spectral methods. These expressions of the spectral power density of the phase fluctuations allowed to take into account the effect of the circuit elements of the inverter of the pathogen on its spectral characteristics and calculate the dispersion, the average deviation of the phase in the frequency band and the mean square raid exciter output signal phase.
Life cycle assessment of beverage bottles
Authors: Bałdowska-Witos P , Kruszelnicka W , Tomporowski A 
Published: January 2020

Abstract
Poland ranks sixth in Europe (behind Germany, Italy, France, Spain and England) in terms of demand for plastics, and the Polish plastics processing industry used in 2017 to produce about 3.5 million tons of polymer materials, in view of total demand in Europe estimated at approx. 51.5 million tons. It is assumed that Polish industry uses about 7% of total demand in Europe. In Poland, about 33% of the domestic demand for plastics is directed to the packaging industry. Along with the growing demand for plastics, packaging production and social consumption are increasing. The article presents the sources of greenhouse gas emissions from the food industry. An LCA (Life Cycle Assessment) analysis was carried out that identifies potential environmental burdens for the bottle forming process. The scope of work included selected stages of shaping bottles made of two types of PET and PLA polymer materials. The aim of the work was to demonstrate the impact of bottle production on the condition of the natural environment and to indicate the factors determining these influences.
Aspects of using a numerical simulator for a robot position-orientation matrix determination
Authors: Miclosina C O , Halalae I 
Published: January 2020

Abstract
The paper presents the mathematical model of a parallel topology robot of FP3+3·RRS+MP3 type, used in order to determine the position-orientation matrix of the robot’s mobile reference system. By using a numerical simulator, positions of the characteristic point are plotted in the 3D space.
Antioxidant activity of environmentally - friendly noble metallic nanoparticles
Authors: Sorescu A A , Nuta A , Grigore M , Andrei E R , Radu G I , Iancu L 
Published: January 2020

Abstract
This research paper presents the environmentally - friendly synthesis of two noble metallic nanoparticles, namely silver (AgNPs) and gold (AuNPs), from ten different plants with proven pharmaceutical benefits, e.g.: Sea buckthorn, Elderflower, Lungwort, Acacia, Cornflower, Ramson, etc. Both AgNPs and AuNPs are prepared via two routes: at room temperature, in the dark, for 24 hours and at 50°C under a constant stirring of 600 rpm for 30 minutes. UV - Vis spectroscopy was used to investigate the formation of both AgNPs and AuNPs and compared to the UV – Vis spectra of the plain aqueous extracts prepared at 4°C. The main purpose of our research was to investigate the antioxidant activity of the aqueous extracts and noble metallic nanoparticles obtained thereof and to determine whether the temperature-conducted environmentally - friendly synthesis of AgNPs and AuNPs influences the antioxidant activity in any way.
Research regarding the hardness of cast iron
Authors: Bucur F , Socalici A , Josan A , Putan V 
Published: January 2020

Abstract
Brake blocks for rolling stock are made of phosphorous cast irons or composite materials. In cast iron brake blocks, their structure and mechanical characteristics are influenced by their chemical composition. Through the research and experiments done, there have been established correlations between chemical composition and hardness. The correlations are presented both in analytical and graphical form, as well as their analysis from a mathematical and technological point of view. The regression areas allow the identification of the optimal areas of variation of the analyzed parameters.
Influence of steel vacuuming on the reduction of hydrogen content
Authors: Radu M , Serban S , Popa E , Heput T 
Published: January 2020

Abstract
Under the current technological development, steel consumers are increasingly demanding high quality steels, one of the conditions imposed is the content of gases (hydrogen and nitrogen). At the world level in the technological process of steel production, there are provided facilities for the processing of liquid steel in ladle, at least of type LF-ladle furnace and VD- vacuum degassing. In the researches and experiments carried out the possibilities of the advanced reduction of the hydrogen content, respectively the increase of the elimination level, were considered. As a factor of influence on the aforementioned parameters were chosen: the total duration of the vacuum, the duration of deep vacuum, the vacuum pressure, the inlet-outlet temperatures in the vacuum degassing installation and the distributor. The data obtained were processed in the EXCEL and MATLAB, and on the basis of the technological analysis of the obtained results the optimal limits of variation of the technological parameters were set in order to achieve the aim pursued.
Researches regarding increase of impact resistance for welded structures by weld micro-alloying
Authors: Zgripcea L , Heput T , Putan V , Ardelean M 
Published: January 2020

Abstract
In industrial fabrication, structural steel is the most used grade used in structures and automotive. For these grades, in the last decade automation and standardization leaded to increase of mechanical properties and reduction of fabrication cost. In parallel, control of alloying elements and impurities realized especially in vacuum treatment stations ensured higher mechanical properties in a larger temperature domain. The research scope is to increase of mechanical properties for weld line and obtain higher properties than the base metal. Final goal is to obtain steel structures assembled by welding safer in exploitation. Key point of the research is to increase the impact resistance for weld line by micro alloying and determine the optimum percentage for nickel element inside weld metal.
Analysis of wastewater sludge drying process in vacuum filters
Authors: Flori M , Vîlceanu L 
Published: January 2020

Abstract
The paper presents a case study on wastewater sludge drying in a vacuum filter. Using finite element analysis it is estimated the variation with cake height, along its centerline, of temperature, liquid and gaseous phase ratios. Numerical results are estimated after 30 hours of drying at different temperatures (60°C, 80°C and 100°C), considering a sludge initial moisture content of 20%.
An exploratory analysis on challenges prevailing in small and medium IT firms
Authors: Soman Sandhya , Pareek Piyush Kumar 
Published: January 2020

Abstract
There is lot of challenges being faced by IT Firms. Be it the pressure on companies to deliver reliable software’s with lesser lead times, pressure to perform at par with market competitors, constant push to deliver quality software; there are several such challenges being faced by these firms. In this research paper, we want to focus our attention to small IT Firms and to understand their challenges by conducting a survey with the help of a structured questionnaire. The questionnaire is designed through the past problems highlighted in literature and a validated through responses from industry practitioners. The opinions are recorded and the relationship between the variables are analysed to give a better understanding of the present challenges in small IT Firms. The work presented in this paper is the first phase towards the development of a framework targeted towards SME IT firms for whom increased lead time is a primary bottleneck. In order to solve a problem, it is essential to understand it in depth and to analyse if there is any gap between the perceived bottles presented in the literature, and the actual problems faced in the industry. Hence, in order to bridge that gap, we have made an effort to structure out the questionnaire based on our findings and have tried to determine if the same can be validated through the responses acquired from the industry in practice.
Implementation of Fuzzy Logic in Estimating Yield of a Vegetable Crop
Authors: Upadhya S Mamatha , Mathew Soya 
Published: January 2020

Abstract
Predicting the influence of climate variations on crop yield demands an appropriate model. In this study, Fuzzy logic based crop yield estimation is undertaken considering temperature, humidity and moisture of soil as input parameters. By subjecting these parameters to fuzzy arithmetic, crisp value of yield is obtained. Trapezoidal membership function is considered in the fuzzy modeling. The results are validated using available open source literature. It has been verified theoretically that air humidity 65%-75%, air temperature 18-290 C and soil moisture 60-80% would give high yield.
Design and Enactment of Heart Attack deduction using IoT Measuring Device
Authors: Margaret Mary T , Ramanathan G , Sangamithra A , Soumya K 
Published: January 2020

Abstract
These days we’ve an enhanced range of heart diseases together with enhanced risk of heart attacks. We all heard and observed that heart attack can kill your life in 3 attempts but now days because of heavy stress it could be in first attempt also. If conscious about our health regularly on regular basis then we can detect so many different diseases by detecting them previously, and Co2 would be also varies in the heart attack situation, so in this paper carbon dioxide analyses and identified the intense of CO2 in different level of activities. Life is precious. In this era many people lose their life to coronary failure. Heart attack detection is not easy task. In today’s world heart attack is more common, In order to overcome the situation and to reduce the death rate due to heart attack, this system is used and mainly it will useful for the society In this system we have a tendency to area unit implementing a heartbeat observance and coronary failure detection system exploitation the Internet of Things. In this sensor the operator can fix the low as well as higher level heart beat, where the system monitor the beat and send those data to the internet, in case if the heart beat level go beyond the; low rate which is set by the user, the alert will be given so that immediate action can be taken. One is that the transmittal circuit that is with patient and therefore the different is that the receiver circuits that is being supervised by the doctor or nurse. The main motive of the system which will take the heart beat rate and those data will be get displayed on the digitalized Monitoring screen.
Rethinking Urban Public Space: Physical and Functional Analysis through Visual Surveys
Authors: Abdul Rahman N , Ghani I , Teh M Z , Ibrahim K A 
Published: January 2020

Abstract
Pedestrian-friendly, liveable, sociable human scale and fun urban environment are the qualities for good cities. Human activities will happen in urban public places if cities can offer choices for people. Increasing the use of the spaces in an urban environment through human activities can turn urban spaces into becoming “places” that is crucial to create good cities. Urban spaces should cater the functional, social, and leisure needs of people. It has positively related to a sense of community that contributes to the identity and image of the city. Therefore, urban street planning and design need to emphasis more on crucial aspects such as the physical, social, cultural, economics and pedestrians to create an urban street environment that is attractive as a destination for economic and social activities. This paper aims to propose and discuss optimal design solutions for a better urban street environment in Ipoh old town, Perak. The objectives are 1) to identify nodes and linkages, qualities of place and fabrics of the spaces and; 2) to determine relationships between the quality of the physical environment of the street and social activities that contribute to the use of the spaces. The study adopted a qualitative methodological strategy. Visual surveys were used to observe the relationship between the physical urban environment and the users’ activities in Ipoh old Town, Perak. Field observation was conducted to gather evidence focusing on the functional aspects of the actual scenes of the place through physical and activity mapping. This study has found that the relationship between the physical environment and the users’ activities significantly influenced the quality of place and fabric of the Ipoh town and in turn, contribute towards reimagining identity of Ipoh as a prominent heritage town.
Visual Improvement of Slum Areas to Accelerate Universal Access to Domestic Wastewater Treatment (Case study of Yogyakarta, Semarang and Manado)
Authors: Soewondo P , Windini  , Sulasiah D , Putra A K , Zakiyya N M , Sarli P W , Handajani M 
Published: January 2020

Abstract
Lack of sanitation access is among characteristics of urban slums; therefore strategies to improve sanitation are needed. One possible strategy is to improve visual appearance of slum buildings by painting walls with colours. Other than improving community awareness to maintain cleanliness, this approach can provide economic benefit for the residents, as it creates tourism activities. This paper observes visual improvement of slum areas; besides ability to accelerate access to domestic wastewater treatment is compared. This study observe domestic wastewater treatment facilities after visual improvement carried out in three different slum locations in Indonesia. They are Kampung Code in Yogyakarta, Kampung Wonosari in Semarang and Kampung Sindulang in Manado. Initiation of coloring project of the three urban area is different. Community and private sector initiated Kampung Code painting project, while the local government initiated similar project of Kampung Wonosari and Kampung Sindulang. Observation was performed by distributing questionnaires to residents of the slum areas and path analysis executed afterward. A sample size of 64, 270 and 102 were taken from Kampung Code, Kampung Wonosari and Kampung Sindulang respectively, with 5% margin of error. Wastewater management behaviour was measured based on level of community intention to manage sanitation. Intention is derived from three different independent variables: attitude, subjective norms and perceived behaviour control. Significant effects of the colouring project to improve community awareness towards the importance of domestic wastewater treatment facilities was observed in all slums.
The Effect of Permeable Pavement on Pedestrian Walkway for Human Comfort
Authors: Noviandini Z P , Dewi O C , Laksitoadi B , Widyarta M N 
Published: January 2020

Abstract
This paper describes the effect of material selection for the human movement’s comfortable space on pedestrian walkway. Social interaction between humans and also human interaction with the surrounding environment take place in this pedestrian space. One of the important elements on the pedestrian space is the pavement material. The purpose of this study is to examine the relationship between the selection of permeable pavement material in the pedestrian walkway and the human comfort movement. The study case is conducted in the campus area of the University of Indonesia, where most of the pedestrian walkway is using permeable pavement material. The observation was held during the time before and after the rain. The discussion of this study includes the discussion of the character and performance of the permeable pavement material, the space created by human movement and the activities in the pedestrian walkway, and the effect of permeable pavement material on human comfort movement.
Resilience Capacity Planning: A Strategy Requirement for Vernacular Architecture Existences as a part of Sustainable Development in Lampung
Authors: Hardiilla D , Nugroho A C 
Published: January 2020

Abstract
Facing vulnerability of vernacular architecture existences, resilience capacity planning is involved as a strategic requirement for new established ecosystems of human settlement. Resilient capacity planning concept implementation will help local community to reduce impact of climate change and disaster risk, and also increase safety management. The research is intended to measure the resilience of urban system according to sustainable development for historical heritage and resilient approach that has applied in vernacular settlement. Vernacular architecture of Lampung is a suitable example for this research. Lampung is an area that has multi-culture acculturation, which is seen, in the social system of society, cultural patterns, building typologies and traditional settlement patterns. On the other hand, vernacular architecture of Lampung provides outstanding shelter from climate change and disaster risk, meets the requirements of local food security, where the development adjusts the cultural landscape, the potential of food sources and other natural resources. In addition, the development process also uses local technology and construction that adapts the environment and its location to ease the production land. However, there is much vernacular architecture, which have high socio-cultural potential and are not identified by academic researchers. By studying architectural vernacular, we not only repeat the way of life of the past, but also as a first step to create new technologies and designs in the future by learning the knowledge and technology applied in the past especially in Lampung. In this paper, researcher takes lead by conducting a review of important part of the existence of vernacular architecture to conduct resilience capacity planning strategy as a part of sustainable development in Lampung.
Analyzing Human Scale Space on Street Characteristics in The Tembalang Education Area
Authors: Dewi D I K , Rakhmatulloh A R , Winarendri J , Yubelta E 
Published: January 2020

Abstract
The education area is considered as a new growth center, because the demand for mobility is quite high, related to the ease of the community to the destination. The term human-scale space becomes important to achieve ideal conditions and without external interference when moving. The research location is in the Tembalang education area of Semarang City and examines the three main variables of the human scale space, namely accessibility, distance, and coordination between locations. Data obtained through field observations. The research method used is descriptive quantitative and scoring analyze. The purpose of this study was to analyze the human scale space based on street characteristics in the Tembalang education area. The method used in after observing, the results of this study classify the characteristics of streets in the education area Tembalang both on campus and outside of campus.
A Dimension of Biophilia in Urban Design
Authors: Amat R C , Ismail S , Wahab M H , Ahmad N H , Rani W N M W M 
Published: January 2020

Abstract
Erich Fromm coined the terminology of Biophilia in his book The Heart of Man. Hence, the concept was interpreted and established by Edward O. Wilson. It was described as human passionate of life and promoting well-being through natural elements. Throughout the years, the researchers show shreds of evidence of the positive benefits of nature interaction into human's life towards sustainable built environments. Biophilic is the terminology concept of design by integrating nature and natural elements, materials, and form in the built environment. The underpinnings theoretical frameworks are human experiences and the need for nature (Biophilia) through design principles and approaches (biophilic design) in the city built environment (urban design). This review paper will focus on the concept of Biophilia and biophilic by these two scholars, including Stephen Kellert and Elizabeth Calabrese that search through upon creating sustainable cities and restorative environment. The results will indicate the empirical evidence and call for further research on Biophilia in urban design.
Trip Attraction Model of 4 in 1 Shopping Center Concept for Sustainable Development in Semarang City
Authors: Rahayu S , Basuki Y , Gritanarum M 
Published: January 2020

Abstract
One of sustainable development strategies is predict the future to anticipate the impact of the development. The rise of retail development has encouraged retail companies to innovate marketing concept. Allocation multi use commercial activity in one location is the 4 in 1 concept on Transmart. This retail development will affect the increase in the number of trips. One of the goals of planning is to minimize problems in the future. This can be done by modeling to predict the impact of development to implement sustainable development concept. The purpose of this study is to make a trip attraction model in shopping centers with a concept of 4 in 1. The method used in this study is trip rate and multiple linear regression model. The results of this study are trip rate and multiple regression linear model. The model of trip attraction arranged from the equation y = 0.005 + 0.263x1 + 0.186x2 + 0.087x3-0.061x4, where y is the total trip rate depending on the trip rate area (x1) 0.263, trip rate for dining area (x2 ) 0.186, the trip activity area play (x3) 0.087, the trip activity area watching rate (x4) - 0.061 with R-Square value (R2) 100%. This model can estimate the amount of travel attraction and anticipate traffic problems caused by the construction of similar shopping centers with different configuration areas of activity.