bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigation of the Physical, Mechanical and Aesthetic Characteristics of Terrazo Tiles Obtained from Different Rock Aggregates
Authors: Çoşkun Canberk , Rızaoğlu Tamer 
Published: August 2020

Abstract
Throughout history, people have covered the floors of the buildings with materials such as carpet, rock pieces, wood, mosaic, ceramic and tile according to the conditions of the day due to their desire to protect them from moisture, make them hygienic environment easy to clean and give an aesthetic appearance. The merging of mechanization with cement based materials with the industrial revolution in the 19th century has brought along the development of diversity and different production methods in these floor covering materials. One of these coating materials is terrazo tiles that form the subject of the current paper. Terrazo tiles are materials obtained by pressing the mortar obtained by mixing water, cement, marble powder and aggregate in certain proportions. Within the scope of this research, it was aimed to provide alternative raw materials to the tile body and to transform the rock pieces, which are found in waste form in natural stone workshops, into the economy. For this purpose, geomaterials collected from magmatic, metamorphic and sedimentary rocks cropped in the Kahramanmaraş-Antakya-Elazığ regions and natural stone workshops operating in Kahramanmaraş city, were classified according to their geological origins and aggregates of 4.75-12 mm were obtained with the help of jaw crushers and sieves. Tiles have been produced in accordance with the method of tile production from sized aggregates. The produced tiles were kept in the water pool for 28 days and surface controls were made. According to the physical and mechanical test results applied to the tile samples, water absorption by weight is 5.31-13.25%, bending strength 4.95-8.89 MPa, Böhme abrasion resistance 1.09-3.43 cm3/50cm2, mass loss after freeze-thaw is observed to be in the range of 0.97-1.59%. On the other hand, the surface roughness of the tiles prepared with coarse rock aggregates was found to be relatively lower than the tile samples obtained with fine grained rock aggregates. The obtained results indicate that the geomaterials subject to the research can be used as an alternative raw material source in tile production and these raw materials will provide new benefits to the construction field.
Evaluation of the Quality of Conical Picks and the Possibility of Predicting the Costs of Their Use
Authors: Krauze Krzysztof , Mucha Kamil , Wydro Tomasz 
Published: August 2020

Abstract
Currently, the user’s choice of a conical pick involves specifying its geometric and material parameters, taking into account the place and conditions of its work. The selection is then made, usually on the basis of solely one criterion, which is the price. Thus, at the stage of both purchase and operation, the quality of picks and their suitability for a specific machine and the processed mineral are not assessed. Therefore, a method was developed to enable conducting tests that determine the geometric parameters of a pick, the types of materials of the pick body and WC insert as well as the pick wear rate (intensity) in a laboratory workstation. The wear rate (intensity) is described by the C2 index – the smaller is its value, the slower is the pick’s wear. The C2 index has been used to forecast the wear of picks and to determine their unit price and operating costs. This allows for precise determination of investment requirements and a proper selection of the pick.
Analysis of the Features of a Degraded Land in Terms of Revitalization – Case Study on the Example of a Post-Smelter Area
Authors: Michalski Krzysztof 
Published: August 2020

Abstract
The process of transformation in the Polish economy, transforming it from a planned economy into a market economy, has resulted, among others, in the liquidation of many heavy industry plants in the Upper Silesian Industrial Region (GOP). GOP cities, which grew up on the basis of heavy industry, were spatially planned according to the needs of mining and metallurgical plants. Liquidation of the plants resulted in the creation of degraded, unused post-industrial areas, scattered over various city districts. Their location is often very attractive, but with many drawbacks, such as degradation, contamination by harmful substances or unclear legal status, potential investors are reluctant to take interest in them. Detailed documentation of the land’s characteristics, the effects of the activity previously carried out here, the community’s expectations regarding the use and development of such land, will make it easier for the investor to take a decision on the redevelopment of the area. The article is an example of a preliminary analysis of a selected post-industrial area, which helps to outline the direction of its revitalization.
Instruments Supporting Sustainable Development
Authors: Postrzednik-Lotko Katarzyna 
Published: August 2020

Abstract
This article presents the most important aspects of the sustainable development policy and indicates the instruments that have an impact on its shaping. In addition, attention was drawn to the fact that issues related to sustainable development (mainly in the context of spatial planning and investment) and environmental protection are also discussed as leading topics in discussions on the quality of life in Europe. In the conclusions for the future, points were identified that prove to be the most important goals for the current and future development of Europe as a whole, namely: promoting sustainable spatial development; strengthening business location; infrastructure optimization; ensuring social stability in areas such as health, education and social policy; careful use of natural resources (promoting biodiversity and supporting material cycle optimization), i.e. helping to ensure that the natural foundations of life are available to the next generation as much as possible; continuation of advanced energy policy (reduction of CO2 emissions in line with target values); strengthening education (continuing to consolidate the education system, improving the conditions for employing teachers, as well as ensuring the financial stability of educational institutions); ensuring the safety of; effective positioning of regions (cooperation between regions that jointly implement key projects and take greater account of common interests at national level).
Moving to Smart Cities Through the Standard Indicators ISO 37120
Authors: Midor Katarzyna , Płaza Grażyna 
Published: August 2020

Abstract
In this article the current and most important standards focusing on smart city sector and organizations issuing them were presented. The standard-setting family for smart cities consists of four basic standards: ISO 37101, ISO 37120, ISO 37122 and ISO 37123. The paper also presents the indicators on the basis of which a city can apply for a certificate of ISO 37120 standard and presents the possibilities of a register of different cities from all over the world in the Global Cities RegistryTM, developed by WCCD (World Council on City Data). Thanks to the data contained in the database, city authorities can answer the question: How prosperous is my city? and compare with other cities from around the world. As an example of the use of WCCD data, a comparison of 21 European cities in terms of the amount of renewable energy consumption in relation to the size of population living in the city has been presented.
Management Accounting Model for Small Industrial Enterprises
Authors: Ságová Zuzana 
Published: August 2020

Abstract
The aim of the paper is a model of managerial accounting for small industrial enterprises, which is not theoretically developed in the literature and in most small enterprises, managerial accounting is not even practically applied. The questionnaire survey found information about the tasks, tools and methods that managerial accounting performs in medium-sized companies. The analysis of the use of managerial accounting is the practice of small industrial enterprises was carried out through guided personal interviews, while the evaluation specified the most problematic areas of its application in these enterprises. Based on the findings of the analysis following the information obtained on the tasks, methods and tools of management accounting in medium-sized enterprises, a model of management accounting for small industrial enterprises was proposed. It defined the tasks that managerial accounting should perform in small industrial enterprises and, among the existing methods and procedures traditionally used in managerial accounting, those that are practically applicable in the given enterprises were proposed. The main benefit of the paper is the management accounting model for small industrial enterprises. The main emphasis is placed on the transparency of costs and the interconnection of information on individual elements of the accounting information system with minimal capital expenditures.
Quo Vadis Power Engineering? A Slow Transition from Centralised Power Generation to Distributed Power Generation And what about Poland?
Authors: Kiciński Jan 
Published: August 2020

Abstract
Is the world's power engineering at a crossroads? Does the rapid development of new emerging fields such as the Internet of Things, smart city or e-mobility make us take a completely different point of view on the world's energy future? What are our visions and development forecasts related to this? Who is right, Exxon Mobil Corporation or the visionary investor Elon Musk? The author of this article is trying to find answers to these and many other questions. In the long-term perspective, a transition from centralised power generation to distributed power generation seems to be inevitable, and that is the central message of this article.
The article also presents the situation of the Polish power engineering against the background of global trends, as well as proposals for solving the smog problem using anti-smog technologies developed at the Institute of Fluid-Flow Machinery of the Polish Academy of Sciences in Gdańsk and by launching a pilot project that will cover 1,000 households equipped with these technologies. The author and his closest co-workers recommend equipping boilers, including both older and newer ones, with low-power electrostatic precipitators. In this way, one can burn low-quality fuels while keeping the emission of airborne dust at a low level. It is a quick and not pricey solution to the smog problem.
Selected Issues of the Structures and Parameters of Supercritical CO2 Gas Turbine Cycles
Authors: Milewski Jarosław , Futyma Kamil , Szczęśniak Arkadiusz , Wołowicz Marcin , Ziembicki Gabriel 
Published: August 2020

Abstract
The paper presents a variant analysis of the structures of closed gas turbines using supercritical carbon dioxide (super-CO2) as a working fluid. Several configurations covered in the available literature were collected, commented on and compared. The parameters of the cycles, such as operating temperature and heat supply are noted and commented on. There are three main configurations considered in the available literature: the precompression cycle, partial cooling cycle, and recompression cycle.
Evaluation of Bleed Flow Precooling Influence on the Efficiency of the E-MATIANT Cycle
Authors: Rogalev Andrey , Kindra Vladimir , Zonov Alexey , Rogalev Nikolay , Agamirov Levon 
Published: August 2020

Abstract
This study aims to present a method for precooling bleed flow by water injection in the E-MATIANT cycle and to estimate its impact on the overall efficiency. The design parameters of the cycle are set up on the basis of the component technologies of today's state-of-the-art gas turbines with a turbine inlet temperature between 1100 and 1700°C. Several schemes of the E-MATIANT cycle are considered: with one, two and three combustion chambers. The optimal pressure ratio ranges for the considered turbine inlet temperatures are identified and a comparison with existing evaluations is made. For the optimal initial parameters, cycle net efficiency varies from 42.0 to 49.8%. A significant influence of turbine stage cooling model on optimal thermodynamic parameters and cycle efficiency is established. The maximum cycle efficiency is 44.0% considering cooling losses. The performance penalty due to the oxygen production and carbon dioxide capture is 20–22%.
Numerical Analysis of the VAD Outflow Cannula Positioning on the Blood Flow in the Patient–Specific Brain Supplying Arteries
Authors: Tyfa Zbigniew , Obidowski Damian , Jóźwik Krzysztof 
Published: August 2020

Abstract
The primary objective of this research can be divided into two separate aspects. The first one was to verify whether own software can be treated as a viable source of data for the Computer Aided Design (CAD) modelling and Computational Fluid Dynamics CFD analysis. The second aspect was to analyze the influence of the Ventricle Assist Device (VAD) outflow cannula positioning on the blood flow distribution in the brain-supplying arteries. Patient-specific model was reconstructed basing on the DICOM image sets obtained with the angiographic Computed Tomography. The reconstruction process was performed in the custom-created software, whereas the outflow cannulas were added in the SolidWorks software. Volumetric meshes were generated in the Ansys Mesher module. The transient boundary conditions enabled simulating several full cardiac cycles. Performed investigations focused mainly on volume flow rate, shear stress and velocity distribution. It was proven that custom-created software enhances the processes of the anatomical objects reconstruction. Developed geometrical files are compatible with CAD and CFD software – they can be easily manipulated and modified. Concerning the numerical simulations, several cases with varied positioning of the VAD outflow cannula were analyzed. Obtained results revealed that the location of the VAD outflow cannula has a slight impact on the blood flow distribution among the brain supplying arteries.
On Thermoelasticity in FGL – Tolerance Averaging Technique
Authors: Pazera Ewelina , Ostrowski Piotr , Jędrysiak Jarosław 
Published: August 2020

Abstract
In this paper the problem of linear thermoelasticity in a laminate with functional gradation of properties is considered. In micro level this laminate is made of two different materials, microlaminas, distributed non-periodically but also not randomly along one of directions, what in macro level results in aforementioned functionally gradation of laminate properties. In order to describe behavior of such structure, equations of two models are here presented – the tolerance and the tolerance-asymptotic model. Both are obtained by the tolerance averaging technique. The basic aim of this work is to analyse the influence of some terms from these averaged equations on the distribution and the values of the displacements and the temperature functions. To solve the equations of two proposed models the finite difference method is used.
Transport of Temperature Fluctuations Across a Two-Phased Laminate Conductor
Authors: Wodzyński Łukasz , Kula Dorota , Wierzbicki Ewaryst 
Published: August 2020

Abstract
In the periodic composite materials temperature or displacement fluctuations suppressed in directions perpendicular to the periodicity surfaces should expect a damping reaction from the composite. This phenomenon, known as the boundary effect behavior has been investigated only in the framework of approximated models. In this paper extended tolerance model of heat transfer in periodic composites is used as a tool allows analytical investigations of highly oscillating boundary thermal loadings. It has been shown that mentioned reaction is dual – different for even and odd fluctuations.
Recognition of Data Matrix Codes in Images and their Applications in Production Processes
Authors: Karrach Ladislav , Pivarčiová Elena 
Published: August 2020

Abstract
Data Matrix codes can be a significant factor in increasing productivity and efficiency in production processes. An important point in deploying Data Matrix codes is their recognition and decoding. In this paper is presented a computationally efficient algorithm for locating Data Matrix codes in the images. Image areas that may contain the Data Matrix code are to be identified firstly. To identify these areas, the thresholding, connected components labelling and examining outer bounding-box of the continuous regions is used. Subsequently, to determine the boundaries of the Data Matrix code more precisely, we work with the difference of adjacent projections around the Finder Pattern. The dimensions of the Data Matrix code are determined by analyzing the local extremes around the Timing Pattern. We verified the proposed method on a testing set of synthetic and real scene images and compared it with the results of other open-source and commercial solutions. The proposed method has achieved better results than competitive commercial solutions.
Multi-χ: Identifying Multiple Authors from Source Code Files
Authors: Abuhamad Mohammed , Abuhmed Tamer , Nyang DaeHun , Mohaisen David 
Published: August 2020

AbstractMost authorship identification schemes assume that code samples are written by a single author. However, real software projects are typically the result of a team effort, making it essential to consider a finegrained multi-author identification in a single code sample, which we address with Multi-χ. Multi-χ leverages a deep learning-based approach for multi-author identification in source code, is lightweight, uses a compact representation for efficiency, and does not require any code parsing, syntax tree extraction, nor feature selection. In Multi-χ, code samples are divided into small segments, which are then represented as a sequence ofn-dimensional term representations. The sequence is fed into an RNN-based verification model to assist a segment integration process which integrates positively verified segments, i.e., integrates segments that have a high probability of being written by one author. Finally, the resulting segments from the integration process are represented using word2vec or TF-IDF and fed into the identification model. We evaluate Multi-χ with several Github projects (Caffe, Facebook’s Folly, Tensor-Flow, etc.) and show remarkable accuracy. For example, Multi-χ achieves an authorship example-based accuracy (A-EBA) of 86.41% and per-segment authorship identification of 93.18% for identifying 562 programmers. We examine the performance against multiple dimensions and design choices, and demonstrate its effectiveness.
Exposing Private User Behaviors of Collaborative Filtering via Model Inversion Techniques
Authors: Hidano Seira , Murakami Takao , Katsumata Shuichi , Kiyomoto Shinsaku , Hanaoka Goichiro 
Published: August 2020

AbstractPrivacy risks of collaborative filtering (CF) have been widely studied. The current state-of-theart inference attack on user behaviors (e.g., ratings/purchases on sensitive items) for CF is by Calandrino et al. (S&P, 2011). They showed that if an adversary obtained a moderate amount of user’s public behavior before some timeT, she can infer user’s private behavioraftertimeT. However, the existence of an attack that infers user’s private behaviorbefore Tremains open. In this paper, we propose the first inference attack that reveals past private user behaviors. Our attack departs from previous techniques and is based onmodel inversion(MI). In particular, we propose the first MI attack on factorization-based CF systems by leveraging data poisoning by Li et al. (NIPS, 2016) in a novel way. We inject malicious users into the CF system so that adversarialy chosen “decoy” items are linked with user’s private behaviors. We also show how to weaken the assumption made by Li et al. on the information available to the adversary from the whole rating matrix to only the item profile and how to create malicious ratings effectively. We validate the effectiveness of our inference algorithm using two real-world datasets.
MoneyMorph: Censorship Resistant Rendezvous using Permissionless Cryptocurrencies
Authors: Minaei Mohsen , Moreno-Sanchez Pedro , Kate Aniket 
Published: August 2020

Abstract
Cryptocurrencies play a major role in the global financial ecosystem. Their presence across different geopolitical corridors, including in repressive regimes, has been one of their striking features. In this work, we leverage this feature for bootstrapping Censorship Resistant communication. We conceptualize the notion of stego-bootstrapping scheme and its security in terms of rareness and security against chosencovertext attacks. We present MoneyMorph, a provably secure stego-bootstrapping scheme using cryptocurrencies. MoneyMorph allows a censored user to interact with a decoder entity outside the censored region, through blockchain transactions as rendezvous, to obtain bootstrapping information such as a censorshipresistant proxy and its public key. Unlike the usual bootstrapping approaches (e.g., emailing) with heuristic security, if any, MoneyMorph employs public-key steganography over blockchain transactions to ensure provable cryptographic security. We design rendezvous over Bitcoin, Zcash, Monero, and Ethereum, and analyze their effectiveness in terms of available bandwidth and transaction cost. With its highly cryptographic structure, we show that Zcash provides 1148 byte bandwidth per transaction costing less than 0.01 USD as fee.
The Road Not Taken: Re-thinking the Feasibility of Voice Calling Over Tor
Authors: Sharma Piyush Kumar , Chaudhary Shashwat , Hassija Nikhil , Maity Mukulika , Chakravarty Sambuddho 
Published: August 2020

Abstract
Anonymous VoIP calls over the Internet holds great significance for privacy-conscious users, whistle-blowers and political activists alike. Prior research deems popular anonymization systems like Tor unsuitable for providing the requisite performance guarantees that real-time applications like VoIP need. Their claims are backed by studies that may no longer be valid due to constant advancements in Tor. Moreover, we believe that these studies lacked the requisite diversity and comprehensiveness. Thus, conclusions from these studies, led them to propose novel and tailored solutions. However, no such system is available for immediate use. Additionally, operating such new systems would incur significant costs for recruiting users and volunteered relays, to provide the necessary anonymity guarantees.
It thus becomes an imperative that the exact performance of VoIP over Tor be quantified and analyzed, so that the potential performance bottlenecks can be amended. We thus conducted an extensive empirical study across various in-lab and real world scenarios to shed light on VoIP performance over Tor. In over half a million calls spanning 12 months, across seven countries and covering about 6650 Tor relays, we observed that Tor supports good voice quality (Perceptual Evaluation of Speech Quality (PESQ) >3 and one-way delay <400 ms) in more than 85% of cases. Further analysis indicates that in general for most Tor relays, the contentions due to cross-traffic were low enough to support VoIP calls, that are anyways transmitted at low rates (<120 Kbps). Our findings are supported by concordant measurements using iperf that show more than the adequate available bandwidth for most cases. Hence, unlike prior efforts, our research reveals that Tor is suitable for supporting anonymous VoIP calls.