bluuebunny/crossref_metadata_2025 huggingface dataset:
Resíduos cerâmicos no município de Pedreira [SP]: equacionamento e soluções de reciclagem
Authors: Campos Marco Antonio , Paulon Vladimir Antonio , Dalfré Filho José Gilberto
Published: September 2018

A cidade de Pedreira no interior de São Paulo, distante 40 km da cidade de Campinas é considerada a “Capital da Porcelana” devido a sua maior atividade industrial que é a produção cerâmica, em especial a porcelana de mesa e os isoladores elétricos de porcelana. As indústrias cerâmicas da cidade respondem por 80% da produção nacional dos isoladores de porcelana, que é estima anualmente em 30 mil toneladas. Com o controle de qualidade das cerâmicas e as políticas ambientais que priorizam para as empresas produtoras o descarte final dos produtos novos e também daqueles referentes a substituição e modernização, principalmente dos isoladores, haverá um grande passivo de porcelana na cidade de Pedreira que precisa ser equacionado através de politicas de reciclagem de nobre material. Portanto, este apresenta metodologia de reciclagem e consequente reuso destas porcelanas através da sua utilização como material substituto dos agregados em concretos e argamassas, além de material pozolânico ao cimento Portland.
Política habitacional brasileira, proliferação de assentamentos informais, recursos hídricos e sustentabilidade urbana na cidade do Rio de Janeiro
Authors: Cerqueira Luiz Fernando Flores , Silva Luciene Pimentel da
Published: September 2018

O crescimento sem planejamento das cidades vem acompanhado do crescimento dos assentamentos informais, as chamadas favelas. As favelas são aglomerados de moradias predominantemente insalubres, construídas em terrenos ocupados ilegalmente. Essa ocupação dá origem a uma série de impactos no meio ambiente, afetando diretamente a sustentabilidade do meio urbano. O presente trabalho traz a análise da legislação que incide sobre o uso e ocupação do solo, bem como da política habitacional brasileira, promovendo a discussão acerca da relação entre esta, a favelização das cidades e o meio ambiente. Como objeto de estudo e recorte para tratamento da questão tomou-se a cidade do Rio de Janeiro. Os resultados de tal discussão apontam como se desencadeiam os impactos ambientais no meio urbano. Entretanto acredita-se que guardando as devidas especificidades da situação do Rio de Janeiro, os resultados deste trabalho possam ser aplicados em outras grandes cidades brasileiras.
Environmental diagnosis of the soil usage and the water resources preservation of Juqueriquerê river’s watershed
Authors: Pinto Neto José Nunes , Moura Luciana Machado , Fernandes Gisele Aparecida , Carvalho Alessandra Rodrigues de , Figueiredo Marilu Alcântara de Melo , Faria Elaine Dias de , Pons Nívea Adriana Dias
Published: September 2018

The management of the soil usage and the water resources protection has received more and more attention from society and environmental studies. In this perspective, geo-processing tools can help in the production of more representative diagnosis, reporting the reality of the study fields in a clearer way. This paper aims at performing a diagnosis of the soil usage as well as the state of preservation of the water resources of Juqueriquerê River’s watershed. To create the database and the final production of the maps, the following programs were used: Google Earth Plus, Global Mapper 13 e ArcGis 9.3. The analysis of the data allowed the contrast between the degradation areas which extend from the central area of the basin to the edge of the Atlantic Ocean, such as many pasture areas and degraded riparian, which compromises the quality of the water resources.  Safety policies, respect of the soil usage and the proper application of environmental management plans are essential to achieve the correct use of the natural resources.
Highly Dynamic Spindle Integrated Magnet Actuators for Chatter Reduction
Authors: Königsberg Jan , Reiners Jan , Ponick Bernd , Denkena Berend , Bergmann Benjamin ,   Institute for Drive Systems and Power Electronics (IAL), Leibniz Universität Hannover Welfengarten 1, 30167 Hannover, Germany,   Institute of Production Engineering and Machine Tools (IFW), Leibniz Universität Hannover, Garbsen, Germany
Published: September 2018

This paper presents a novel approach for active chatter reduction using a motor spindle with integrated magnet actuators. Based on the results of previous studies the design of an active damped prototype is described. The system performance as well as the benefits and drawbacks of this solution are discussed. In order to eliminate the known drawbacks a novel actuator design is introduced. The novel approach integrates the actuator windings into the stator core. Next, strategies for electric and magnetic decoupling of the actuator and motor windings are presented. Subsequently the actuator design is discussed. The force generation and distribution of the damping actuator are calculated via analytical and finite elements analysis (FEA). With the novel approach the mechanical integration of the active damping actuators is simplified significantly. Additionally, the maximal attainable spindle power is increased up to 150% in relation to the previous solution.
Motion Accuracy Enhancement of Five-Axis Machine Tools by Modified CL-Data
Authors: Sato Ryuta , Hasegawa Shogo , Shirase Keiichi , Hasegawa Masanobu , Saito Akira , Iwasaki Takayuki ,   Department of Mechanical Engineering, Kobe University 1-1 Rokko-dai, Nada, Kobe 657-8501, Japan,   Production Engineering Center, IHI Corporation, Yokohama, Japan
Published: September 2018

The motion trajectories of machine tools directly influence the geometrical shape of machined workpieces. Hence, improvement in their motion accuracy is required. It is known that machined shape errors occurring in numerical control (NC) machine tools can be compensated for by modifying the CL-data, based on the amount of error calculated by the measurement results of the machined shape of the workpiece. However, by using this method the shape errors cannot be compensated accurately in five-axis machining, because the final machining shape may not reflect the motion trajectory of a tool owing to the motion errors of the translational and rotary axes. In this study, a modification method of the cutter location (CL)-data, based on the amount of motion errors of the tool center-point trajectory during the machining motion, is newly proposed. The simulation and experiment of a wing profile machining motion is performed, to confirm the effectiveness of the proposed method. From the results, we confirm that the motion accuracy can be significantly improved by applying the proposed method.
Precision Forming and Machining Technologies for Ceramic-Based Components
Authors: Watanabe Keiichiro ,   Manufacturing Engineering Department, Corporate Manufacturing Engineering, NGK Insulators, Ltd. 2-56 Suda-cho, Mizuho, Nagoya 467-8530, Japan, Takahashi Tomonori , Nagae Tomoki , Tsuji Hiroyuki
Published: September 2018

Structural ceramics components for industrial use are classified under two categories: one that is originally designed for ceramics (Ceramic Origin), and the other that is originally designed for metals and subsequently replaced with ceramics because of their improved hardness and resistance to both heat and corrosion (Metal Origin). Ceramic insulators for power lines and catalytic substrates used to control automotive emissions in gasoline engines are “Ceramic Origin” components. As ceramics are difficult to machine, a precision mold has been used in the forming process to minimize the machining volume in the case of “Ceramic Origin” components. Meanwhile, ceramic turbo charger rotors and valves for automotive engines are “Metal Origin” components, which not only require durability under severe operating conditions but also severe dimensional accuracy, similar to metal parts. These components have been derived from extensive R&D efforts in materials and process technologies for ceramic gas turbines, which have been implemented in the majority of advanced countries since the 1970s. This paper includes some examples of precision forming and machining technologies for both types of ceramic components developed by NGK Insulators, Ltd., and highlight their issues. Finally, the possibility of new types of ceramic-based components will be introduced.
Machinability of Thermo-Plastic Carbon Fiber Reinforced Plastic in Inclined Planetary Motion Milling
Authors: Tanaka Hidetake , Kitamura Mitsuru ,   Faculty of Science and Technology, Sophia University 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan,   Department of Mechanical Engineering, Graduate School, Nagaoka University of Technology, Nagaoka, Japan
Published: September 2018

The study deals with an improved method of milling thermo-plastic CFRP with a radius end mill. The authors use inclined planetary milling to carry out a fine CFRP boring technique. The inclined planetary motion milling consists of the two independent spindle motions of tool rotation and revolution. The eccentricity of the tool rotation axis is realized by a few degrees of inclination from the revolution axis. The movement of eccentric mechanism can be reduced by comparing it with that of orbital drilling. The inclined planetary motion milling reduces inertial vibration and decreases cutting force. Owing to the geometrical cutting principle, material delamination and burrs can be decreased. Thermo-plastic CFRP has recently been under development as an alternative structural material for the next generation of automobiles and in response to demands for bored fastening holes. The shape of the cutting edge of the ball end mill is suitable for the inclined planetary milling, as revealed by results of past experiments done on thermo-set CFRP. However, the ball end mill has left burrs and melted matrix on the exit side in the case of thermo-plastic CFRP. The radius end mill has the advantage over the ball end mill in terms of finishing fine boring. Based on the consideration of the schematic model and experiments using the Taguchi method, the improved milling conditions are examined.
Auditory perception and language development of newborns with hearing loss in Turkey
Authors: Sevınc SEBNEM , Sahlı AYSE SANEM , Belgın EROL
Published: September 2018

Aim: The aim of this retrospective cohort study was to present the demographic and clinical features of newborns diagnosed
with hearing loss and to evaluate the results of hearing rehabilitation in
terms of auditory perception and speech and language skills.

Materials and methods: Demographic data, auditory perception
performances and receptive and expressive language skills of newborns were
evaluated with Ling’s six sounds test, Infant-Toddler/Meaningful Auditory
Integration Scale and Preschool Language Scale Fourth Edition on first
admission and subsequently at 1st, 2nd, 3rd, 4th
and 5th years.

Results: A total of
30 newborns (10 girls, 20 boys), with an average age of 48.70±17.19 (range, 5
to 75) months at the initial evaluation-were included in this study. There was
significant increases on the detection and recognition performance of Ling’s
six sounds and IT-MAIS/MAIS scores. These improvements were observed more
remarkably especially in the first and second years. Receptive and expressive
language performances of newborns were increasing gradually and reached to the
level of chronologic age at the end of the second year.

Conclusion: Neonatal
hearing screening programs must be popularized for early diagnosis and referral
of newborns with hearing loss. Increased
awareness and improvement of communication on these topics are mandatory for
achievement of better results.
Resident Opinion Surveys As A Contribution To Improved Housing Stock Management
Authors: OSTAŃSKA Anna
Published: September 2018

The aim of research was to evaluate the quality of living conditions in selected prefabricated housing estates built in 1978–1986 in Lublin. The focus was on assessing how this built environment corresponds to current needs of the residents, and on setting priorities for rehabilitation measures in those areas. The method of collecting input was an opinion survey based on an original questionnaire, conducted in the form of direct interview. Statistical analysis of the questionnaires allowed the researcher to define a set of improvement measures most welcome by the residents. Interestingly, a considerable number of residents declared to participate in the rehabilitation projects by contributing their labor free of charge or by paying certain sums. The proposed way of asking residents on their view on the housing stock deficiencies provides a useful input for facility management plans. Surveys conducted periodically, as consecutive maintenance and improvement measures are taken, are argued to provide guidelines for improvement of studied estates. The proposed method of assessing the built environment can be used in planning rehabilitation projects for any type of housing estates.
The Analysis of The Direct Foundation With Energy Foundations On The Basis of The Office Building “A4 Business Park” In Katowice At Francuska Street
Authors: JASTRZĘBSKA Małgorzata , WAWRZYŃCZYK Barbara
Published: September 2018

Resources of geothermal energy range from the shallow ground to hot water and hot rock were found a few kilometres beneath the Earth’s surface, and down even deeper to the extremely high temperatures of molten rock called magma. The paper shows the analysis of the public building foundation with the usage of shallow geothermal system (closed loop systems using the vertical energy piles). In the soil and groundwater conditions the change of the way of public building foundation was suggested from direct (setting of pads, strip footings and foundation plate according to the basic project) into indirect one with the use of drilled piles in a casing pipe with the possibility of their cooperation with vertical ground collector. Calculations have been conducted in accordance with effectual standards. Both the quantity of energy piles in a single foundation pile coped with the foundation plate and the quantity of energy foundations in the whole building have been determined for the analysed building. Moreover, approximate heating power of the whole system has been calculated. An economical analysis of the proposed solution is presented in a summary.
Economic Analyses In Sewage System Designing For Rural Settlement – Case Study
Authors: LEWICKA Aleksandra , WIDOMSKI Marcin K. , ŁAGÓD Grzegorz
Published: September 2018

The paper presents application of multivariate economic analysis to decision making process of selection of the most economically suitable concept of sanitary sewage system for a selected rural settlement in Poland. Analysis covered Drelow, Lublin Voivodeship, settlement area with 121 households with 421 residents and several municipal services. Three variants of sewage removal and treatment were developed: unconventional gravity-pressure network, gravity-pressure network combined with local domestic wastewater treatment plants (WWTPs) and full pressure sewerage network. In all variants, the container wastewater treatment plant of daily capacity 450 m3 day-1 was applied. Estimations of investment and exploitation costs for 30 years period operation were performed. Economic multivariate analysis was based on: Payback Period, Dynamic Generation Cost (DGC), Net Present Value (NPV) and Benefit-Cost Ratio (BCR). The obtained indicators were the input data for the weighted sum model allowing to select the most appropriate variant. Analysis showed that the most suitable was variant No 1. However, it was also noticed that all of the tested designs were ineffective economically.
Triaxial Tests On Weak Cohesive Soils – Some Practical Remarks (Part 1)
Authors: KOWALSKA Magdalena , JASTRZĘBSKA Małgorzata
Published: September 2018

Standard procedures of triaxial testing recommended e.g. in Eurocode 7 are often unsatisfactory in case of weak cohesive soils (soft and very soft clays, clayey soils with organic content, etc.), mainly due to the high deformability of these soils. Forming a specimen from material sampled in situ and installation of the necessary equipment (a membrane, filter paper strips or on-sample sensors, etc.) may be very difficult and can influence the quality of the test results. This paper (part 1/2) presents detailed description and discussion of the issues related to weak soil sampling and forming of triaxial specimens, based on the Authors’ own experience and literature review. Some solutions, which make the work with weak soils easier and, at the same time, increase the reliability of the results, are suggested e.g.: an “extra consolidation” in a sampler or alternative preparation of the specimen from slurry. Due to the ampleness of the problems related to testing of weak cohesive soils, another issues, such as installation of a triaxial specimen in a chamber or equipping it with different accessories, have been described in part 2 of this paper. In the Authors opinion, the text (parts 1 and 2) may constitute an important hint for researchers completing a triaxial testing system designated for testing weak cohesive soils.
Tests of Physicochemical Properties of Fuel And Ballast Fractions From Waste Processing Installations
Authors: CZOP Monika , KAJDA-SZCZEŚNIAK Małgorzata
Published: September 2018

Economic development of a country as well as growing consumption causes a rise in the amount of wastes, mainly municipal wastes. Basic sources of the municipal wastes are households and public buildings. When Poland joined European Union, it was necessary to introduce many changes related to the waste management. Gradually implemented actions aim at limiting the amounts of municipal wastes deposited in landfills and reducing biodegradable fraction of wastes. Production of fuel from the municipal waste fraction constitutes an important element of modern waste management system. Moreover, it becomes an alternative to exhaustible resources of fossil fuels and a valuable source of energy to be used in industry, e.g. in cement industry.

The article presents characteristics of a selected production plant of alternative fuel, which operates in the area of Silesian Voivodship. The purpose of the test was to analyse the quality of the readymade alternative fuel and ballast fraction formed in the device. Achieved test results were applied to the valid legal regulations in the context of the best possible waste management.
The Concept Of Multifuncional Wall – An Energy System Integrated In A Single Wall
Authors: Figaszewski Jarosław , SokoŁOwska-Moskwiak Joanna
Published: September 2018

In 1981 Mike Davis proposed a new design of the glass wall, which he called a polyvalent wall that would dynamically respond to changing environmental conditions. The idea of an inter-active component in a building envelope has become a source of inspiration for the proponents of external wall concepts. The proposed designs are important because they apply principles of multifunctionality based on cooperation between the wall layers and the dynamic reaction of changing external and internal thermal conditions. The multilayer wall, therefore, plays a major role in the thermal shielding of a building and is a key component in energy efficiency. And the use of new construction materials the wall functionality has been expanded. This application has also expanded the role of a wall in the process of energy management of a building. A non-transparent wall can produce electricity, supply heat from solar radiation, absorb, store and distribute heat. It can be responsible for stabilizing room temperatures. The cooperation between individual layers also has an impact on energy efficiency and on the microclimate of a given building. This paper will present different ways of energy activation in external walls with a special focus on the photovoltaic panels/modules (PV), the transparent insulation (TIM) and phase change materials (PCM). New materials can be included in the partition structure in different configurations such as a single or a bi-material component for improving thermal effects.
Curvilinear Structural Envelops In Current Architecture
Authors: Januszkiewicz Krystyna
Published: September 2018

The paper is focusing on constructing nonlinear shaping of structural envelope in architecture of the digital avant-garde. Digital technologies create new opportunities by allowing construction of complex forms which until recently were difficult to design and build. The first part of the paper presents a concrete structure combined with a system of spatial structure used in constructing complex geometries envelope of The Heydar Aliyev Cultural Centre in Baku (2013). The second part presents how to build c u r v i l i n e a r s u r f a c e s w i t h s h o t c r e t e t e c h n o l o g y – The EMP in Seattle (2000), The City of Culture in Santiago de Compostela (2010) and The Museum of the History of Polish Jews in Warsaw (2014) will be presented. This study highlights issues of constructing curvilinear building envelops and shows new relationships between geometry and material which are different than before.
Flow Capacity Analysis For Mpl Katowice Pyrzowice Terminals With The Indication Of Zones Requiring Architectonic Changes
Authors: Sitek Michał
Published: September 2018

In order to improve the quality of passenger service at an airport terminal it is necessary to continuously monitor the level of the services rendered. Devising a strategy for the process of modernization or extension of an airport, with a view to maintaining or elevating the standards offered, requires a skilled determination of the investment commencement time. The rationale behind such investments is a deliberate prognosis of changes in the numbers of passengers visiting the airport in order to avoid exceeding maximum capacity at peak times. The launch of construction works while maintaining continuity of operations at the airport is connected with a conscious utilization of any available spatial reserves within the existing structures. Analyses of flows of users receiving services in various zones of a building, in consideration of the limit values set for the appropriate standards, are some of the tools that facilitate their proper design. Design that includes the statistical trends of changes in the amount of users receiving service requires a responsible and conscious decision making around the shaping of relations between spatial arrangements and auxiliary technologies. The paper presents different methods of working with large quantities of information which the designer must analyze and comprehend. The aim is to make sound investment and design decisions that would precede and prevent the loss of efficiency and performance in relation to the satisfaction of users.
Fem Analysis Of Corrugated Web Girders Reinforced With Tensioned Diagonal Braces
Authors: BasiŃski Witold , Kowal Zbigniew
Published: September 2018

The study presents the application of FEM numerical analysis, performed with the Abaqus software [1], for theoretical estimation of the ultimate and critical shear and flexural resistance of corrugated web girders reinforced with tension diagonal braces. In FEM numerical models, different web failure modes, observed in physical experimental research into SIN girders were taken into consideration [2]. That was done depending on the inclination angle β of tension diagonal braces and the web thickness. FEM analysis of the shear resistance of corrugated web girders was performed using numerical models of girders. The webs, made from corrugated sheet, had the heights of 500, 1000 and 1500 mm, and the thicknesses of 2; 2.5 and 3 mm. Global shear and flexural load-displacement paths (LDPs) were determined for girder numerical models. In shear LDPs, the shares of cooperation between the corrugated web and tension diagonal braces were separated. For each numerical model, the estimates of the share of the corrugated web and diagonal braces in the shear resistance of SIN girders were produced. The results of the FEM numerical analysis of the resistance of corrugated web girders reinforced with tension diagonal braces were compared to the results of physical experimental research [2] into the girders of concern, and also with the results of calculations made for unreinforced girders acc. EC3 [19]. Conclusions were drawn and recommendations were produced, which can be applied to the construction and dimensioning of corrugated web girders reinforced with tension diagonal braces. The Abaqus software was adjusted to solve the problems related to the phenomena revealed by the research [2].
WIND INFLUENCE ON A BUILDING WITH THE NATURAL SMOKE REMOVAL SYSTEM
Authors: KRÓL Małgorzata , KRÓL Aleksander
Published: September 2018

The natural smoke removal is a common way of protection of the escape routes in Poland. The operation of such systems is based on the phenomenon of buoyancy. The intensity of this effect depends on the temperature difference between smoke and ambient air. The second factor influencing the natural smoke flow inside a building is wind. The wind influence is significantly important for buildings equipped with smoke removal windows. However, also the other natural smoke removal systems could be affected by the wind impact under adverse ambient conditions.

There are the features of the wind described in the first section of the paper. Next, the impact of the wind on a building is shown. Two wind speeds and two wind directions were considered. A building model in the extended computational domain was built. The model was solved with the use of Ansys Fluent. The distributions of dynamic pressure caused by the wind on different facades of the building were presented. The particular attention was paid to the dependence of pressure distribution on the wind direction.
MODELING OF ENERGY CROPS GASIFICATION BASED ON EXPERIMENTAL DATA
Authors: SKOREK-OSIKOWSKA Anna , UCHMAN Wojciech , WERLE Sebastian
Published: September 2018

The paper presents a mathematical model of the selected energy crops gasification. Firstly, the experimental study of the biomass gasification process using fixed-bed reactor was conducted. The highest calorific value was obtained from the gasification of Miscanthus x giganteus (3.84 MJ/m3
n). Based on the experimental results, a model of the gasifier built in Aspen Plus was verified. The developed mathematical model of the gasification system properly reflects the processes occurring in the analyzed gasifier. The relative differences of the lower heating values from the model and experiment did not exceed 1%.
REVIVE TO SURVIVE AND DEVELOP. CITY CENTRES OF SHEFFIELD (U.K.) AND KATOWICE (PL)
Authors: WŁODARCZYK Anna Marta , WŁODARCZYK Michał
Published: September 2018

In the beginnings of 21 century revitalization by means of public open space planning is becoming more and more popular. The purpose of the paper is to juxtapose (not to compare) two European examples of public open spaces created in areas, which are neglected in urban and landscape way: The revitalized centre of the Sheffield post-industrial steel-city in England and the former coal mine area of the present new Silesian Museum in Katowice, Poland.

The empirical and analytical methods were applied, like in situ analysis in Sheffield: scientific walk, photo-documentation, interviews with experts, and research of professional material from the City Council (2014, 2016–2017). In Katowice: the field work, professional architectural supervision of the investment process, as well as the cooperation with architects and city planners (also by the Master Plan 2010) had been carried out during eight years (2006–2014).

The results show various approaches to public open space planning in post-industrial city-centres. In Sheffield the main attention is paid to the interconnected and safe pedestrian areas. In contrary in Katowice the planning efforts focus on architectural design, while the easy accessible and networked common spaces are missing. These differences are rooted in the urban and landscape strategies, assigned in the master plan (in one case), and the lack of such strategies (in the other case).
Technical Features and Functionalities of Myo Armband: An Overview on Related Literature and Advanced Applications of Myoelectric Armbands Mainly Focused on Arm Prostheses
Authors: Visconti P. , Gaetani F. , Zappatore G.A. , Primiceri P.
Published: September 2018

Technological advances in manufacturing smart high-performances electronic devices, increasingly available at lower costs, nowadays allow one to improve users’ quality of life in many application fields. In this work, the human–machine interaction obtained by using a next generation device (Myo armband) is analyzed and discussed, with a particular focus to healthcare applications such as upper-limb prostheses. An overview on application fields of the Myo armband and on the latest research works related to its use in prosthetic applications is presented; subsequently, the technical features and functionalities of this device are examined. Myo armband is a wearable device provided with eight electromyographic electrodes, a 9-axes inertial measurement unit and a transmission module. It sends the data related to the detected signals, via Bluetooth Low Energy technology, to other electronic devices which process them and act accordingly, depending on how they are programmed (in order to drive actuators or perform other specific functions). Applied to the prosthetic field, Myo armband allows one to overcome many issues related to the existing prostheses, representing a complete electronic platform that detects in real-time the main signals related to forearm activity (muscles activation and forearm movements in the three-dimensional space) and sends these data to the connected devices. Nowadays, several typologies of prostheses are available on the market; they can be mainly distinguished into low-cost prostheses, which are light and compact but allow for a limited number of movements, and high-end prostheses, which are much more complex and featured by high dexterity, but also heavy, bulky, difficult to control and very expensive. Finally, the Myo armband is an optimum candidate for prosthetic application (and many others) and offers an excellent low-cost solution for obtaining a reliable, easy to use system.
Circuit Design and Experimental Investigations for a Predator–Prey Model
Authors: Saad Afef Ben , Hmidet Ali , Boubaker Olfa
Published: September 2018

In recent years, dynamical relationship between species in ecology has been intensively investigated and will continue to be one of the most significant themes. The dynamics of predator–prey’s systems are at the heart of these studies. Such models are generally depicted by nonlinear polynomials and exhibit many complex nonlinear phenomena. In this paper, not only a prey–predator model displaying richer dynamical behaviors is analyzed but also its electronic circuit is also designed via the MultiSIM software proving the very good agreement between biological theory considerations and electronic experiments.
Implementation of 144 × 64 Pixel Array Bezel-Less Cmos Fingerprint Sensor
Authors: Jung Seungmin
Published: September 2018

This paper proposes CMOS integrated 144 × 64 pixel array fingerprint sensor without a bezel electrode. In this paper, the architecture of CMOS capacitive fingerprint sensor readout circuit is presented for general type of a switched capacitive integrator scheme. The pipelined scan driver is included in the fingerprint sensor for fast image capture. It is implemented on 0.35 μm standard CMOS process technology. The operation is validated by SPECTRE for one-pixel and RTL simulation including logic synthesis for a full chip design on condition of 0.35 µm typical CMOS process and 3.3 V power. The layout is performed by full custom flow for sensor cell array and auto P&R for a full chip. The area of a full chip is 4943 μm × 3943 μm and the gate count is 542,000. The area of one-pixel is 48 × 48 µm2. The pitch is 50 µm and image resolution is 508 dpi and power consumption is less than 3 mA.
Evaluation of Modified Hodge Test as a Non-molecular Assay for Accurate Detection of KPC-producing Klebsiella pneumoniae
Authors: GHASEMNEJAD ATOSSA , DOUDI MONIR , AMIRMOZAFARI NOUR
Published: September 2018

Klebsiella pneumoniae carbapenemase (KPC) have become a major therapeutic challenge because of its increasingly fast dissemination throughout the world. Accurate detection of KPC is essential for optimal treatment. The Clinical and Laboratory Standards Institutes (CLSI) for fast detection of KPC producers currently recommend Modified Hodge Test (MHT) and Carba NP test. MHT can directly detect carbapenemase production in Enterobacteriaceae isolates. The current study was conducted to evaluate the capacity of MHT with two carbapenem disks for accurate detection of KPC. MHT was performed according to guidelines of CLSI to identify isolates with carbapenem resistance. In doing so, two substrates of MHT were assigned into two groups for examination: meropenem and ertapenem groups. A total of 96 non-repetitive clinical isolates of Klebsiella pneumoniae were tested. The presence of the bla
KPC gene in each MHT-positive isolate was examined by PCR. A total of 54 isolates exhibited reduced susceptibility or resistance to carbapenems. Sensitivity of MHT with two carbapenem disks was similar. Specificity of the MHT with meropenem disk was 64% and with ertapenem disk was 53%. Detection of KPC by MHT with meropenem disk was found to be more effective than with ertapenem disk. Based on our results, the presence of KPC does not in itself influence the categorization of resistance. Therefore, the use of MHT with ertapenem disk for the rapid detection of KPC among K. pneumoniae for infection control should not be recommended.
Improved Production of Recombinant Human β-NGF in Escherichia coli – a Bioreactor Scale Study
Authors: HAJIHASSAN ZAHRA , TILKO POURIA GHOLAMI , SADAT SEYEDEH MAHDIEH
Published: September 2018

Human nerve growth factor β (β-NGF) is considered a major therapeutic agent for treatment of neurodegenerative diseases. We have previously reported the optimized conditions for β-NGF overproduction in Escherichia coli in a shake-flask culture. In this study the optimal %DO (dissolved oxygen) and post induction temperature values for improved production of β-NGF were found in the bioreactor scale using response surface methodology (RSM) as the most common statistical method. Also, for further enhancement of the yield, different post-induction periods of time were selected for testing. In all experiments, the productivity level and bacterial cell growth were evaluated by western blotting technique and monitoring of absorbance at 600 nm, respectively. Our results indicated that %DO, the post-induction time and temperature have significant effects on the production of β-NGF. After 2 hours of induction, the low post induction temperature of 32°C and 20% DO were used to increase the production of β-NGF in a 5-l bioreactor. Another important result obtained in this study was that the improved β-NGF production was not achieved at highest dry cell weigh or highest cell growth. These results are definitely of importance for industrial β-NGF production.
Relación entre la sintomatología depresiva y el desempeño cognitivo en adultos mayores
Authors: Izquierdo-Guerra Karina Ibeth , Montoya-Arenas David Andres , Franco Jose G. , Gaviria Ana M.
Published: September 2018

Objetivo: Analizar la relación de los síntomas depresivos con componentes diferenciados de la función cognitiva de adultos mayores usando el protocolo Neuronorma.Co. Metodología: Se analizó el rendimiento cognitivo de 144 adultos, 58, 3% mujeres, con una edad media de 68, 1 ± 11, 2 años. Se realizó un análisis factorial de componentes principales, para identificar factores independientes de la función cognitiva. Se usó el análisis de regresión lineal múltiple para estimar el tipo y la fuerza de asociación entre síntomas depresivos y los componentes del desempeño neurocognitivo. Resultados: Se identificaron siete componentes diferenciados del rendimiento cognitivo. En el análisis multivariado el control de la interferencia y el lenguaje resultaron afectados por la puntuación total en la Escala de Depresión Geriátrica de Yesavage.
Sulfur Mustard-related Ocular Complications: A Review of Proteomic Alterations and Pathways Involved
Authors: Panahi Yunes , Shahbazi Ahad , Naderi Mostafa , Jadidi Khosrow , Sahebkar Amirhossein
Published: September 2018

Sulphur mustard (SM; (2, 2'-dichloroethylsulfide)) was used for the first time in 1917, during the
World War I. SM mainly induces DNA damage, oxidative stress, and inflammation. This compound injures the
respiratory system, eyes, skin and the endocrine, gastrointestinal, and hematopoietic systems. However, due to the
high lipophilicity of the SM and the lipophilic nature of the tear film, and also due to the direct contact of the eyes
with the environment, the eyes are the most vulnerable part of the body to SM. SM causes several proteomic
alterations in the eye. It increases the production and activity of inflammatory proteins, reduces the concentration
of antioxidant proteins and activates the proteins involved in the onset of apoptosis. In this study, we reviewed
SM-related proteomic alterations and the association of the found proteins with other eye disorders and diseases.
Furthermore, using pathway enrichment analysis, we found the most central biological processes involved in the
emergence of complications caused by SM. Our results revealed that deficient cellular homeostasis, especially in
terms of iron-dependent regulations, as well as pathological changes in vascular endothelial growth factor
(VEGF) expression, is the most central biological process involved in eye injuries caused by SM.
“Too Much Sex and Alcohol”: Beliefs, Attitudes, and Behaviors of Male Adolescents and Young Men Who have Sex with Men in Ghana
Authors: Sabin Lora L. , Beard Jennifer , Agyarko-Poku Thomas , DeSilva Mary , Ashigbie Paul , Segal Tami , Esang Michael , Asafo Mabel Kissiwah , Wondergem Peter , Green Kimberly , Wambugu Samuel , Adu-Sarkodie Yaw
Published: September 2018

Background:

Research suggests that men who have sex with men (MSM) often engage in high-risk sex and use illicit substances.

Objective:

To increase understanding of HIV knowledge and vulnerability among adolescent and young adult MSM, with a focus on alcohol and drug use and transactional sex.

Methods:

We conducted in-depth interviews and Focus Group Discussions (FGDs) with adolescent (aged 15-17 years) and young adult (aged 18-29 years) MSM in Kumasi, Ghana. MSM who reported recent alcohol and/or substance use or engagement in transactional sex were eligible. Questions covered HIV-related knowledge, experiences with substance-use and transactional sex, and attitudes regarding sexual risk-taking and HIV-related services. Data were analyzed thematically using NVivo 10.0 software.

Results:

Ninety-nine MSM participated in 44 interviews and 8 FGDs. Most were attending or had completed secondary school. HIV knowledge was high, but with major gaps. Most consumed alcohol; one-fourth used drugs. Alcohol and substances were consumed to enhance pleasure during sex with another man. Transactional sex was common and positively viewed. Half of the participants used condoms inconsistently or never, and self-perceived HIV risk was high. Nearly half faced stigma-related barriers to accessing HIV-related services.

Conclusion:

As Ghana strives to achieve the UNAIDS’s 90-90-90 global targets (90% of people living with HIV know their status, 90% who know their status are on sustained treatment, and 90% of those on treatment are virally suppressed), we recommend enhancing MSM-targeted prevention programs, improving care options, and increasing use of critical clinical HIV-services by ensuring that MSM receive unbiased, confidential care.
Sentiment Polarity Classification Using Conjure of Genetic Algorithm and Differential Evolution Methods for Optimized Feature Selection
Authors: Jotheeswaran Jeevanandam , Koteeswaran S.
Published: September 2018

Background:

Sentiment Analysis (SA) has a big role in Big data applications regarding consumer
attitude detection, brand/product positioning, customer relationship management and market research.
SA is a natural language processing method to track the public mood on a specific product. SA builds a
system to collect/examine opinions on a product in comments, blog posts, re- views or tweets. Machine
learning applicable to Sentiment Analysis belongs to supervised classifi- cation in general.

Methods:

Two sets of documents, training and test set are required in machine learning based classification:
Training set is used by classifiers to learn documents differentiating character- istics; it is
thus called supervised learning.

Results:

Test sets validate the classifier’s performance. Se- mantic orientation approach to SA is
unsupervised learning because it requires no prior training for mining data. It measures how far a
word is either positive or negative. This paper uses a hybrid GA- DE optimization technique for
sentiment classification to classify features from movie reviews and medical data.

Conclusion:

Our research has enhanced the variables on learning rate as well as momentum values
which are optimized by genetic approach that in turn improve the accuracy of classification procedure.
Dexmedetomidine was Better at Lowering Intraocular Pressure than Magnesium when Combined with Local Anesthetics in Peribulbar Blocks for Posterior Segment Eye Surgery
Authors: Ibrahim Dalia Ahmed , Salah Dina
Published: September 2018

Background and Aim:

Many medications are combined with local anesthetics for peribulbar blocks to improve the quality of the block, however, few studies have compared the effect of dexmedetomidine and magnesium on intraocular pressure when combined with local anesthetics which was the primary endpoint of this double blinded study.

Materials and Methods:

A randomized controlled clinical trial was conducted on 60 ASA Physical Status (ASA PS) I-II patients scheduled for elective posterior segment eye surgeries under peribulbar anesthesia. Patients were randomly allocated to one of three groups of 20 each according to the medications they received. Local anesthetic solution was prepared using 8 ml of bupivacaine 0.5% and lidocaine 2% in a 1: 1 ratio plus 1ml of hyaluronidase (150 units) making a total volume of 9 ml: Group D received: local anesthetic + 20 µg dexmedetomidine diluted with 1 mL of normal saline. Group M received: local anesthetic + magnesium sulphate 50 mg in 1 ml normal saline. Group C received local anesthetic + 1 ml normal saline. Intraocular pressure was measured with the Perkins applanation tonometer immediately before injection and at 1, 5, 10, 15 minutes (min) after injection and then at the end of the procedure, the onset and duration of lid and globe akinesia were assessed. Postoperative analgesia and the first dose of analgesic medication were also assessed.

Results:

Intraocular pressure measurements were statistically lower in group D than the other two groups at 10 and 15mins. The onset of globe and lid akinesia was the most rapid in Group D compared to the other two groups. The duration of globe and lid akinesia was the longest in group D. Time to first analgesic dose request was significantly longer in group D followed by group M then group C. Visual analogue score for pain was significantly less between group D and other two groups. There were no episodes of hypotension or bradycardia in the three groups. No side effects or complications as hemorrhage, globe perforation, brain stem anesthesia sedation were observed.

Conclusion:

In our study addition of dexmedetomidine to a peribulbar block was statistically better at reducing IOP, increasing the duration of optic anesthesia and delaying the need for postoperative analgesic dose request than magnesium.
A gyógy-, wellness- és sportszolgáltatások fejlesztési lehetőségei a gyógyturizmusban egy hazai kutatás tükrében
Authors: Müller Anetta , Pfau Christa , Gabnai Zoltán , Bácsné Bába Éva , Borbély Attila , Pető Károly
Published: September 2018

A turizmusban a kiegészítő szolgáltatások mennyisége, és azok minőségi aspektusai egyre nagyobb szerepet töltenek be a szolgáltatók versenyképességében. A kutatásunkban arra vállalkoztunk, hogy egy piackutatás keretében (N=328) feltárjuk az Észak-magyarországi régióban működő gyógyintézet által működtetett két telephely szolgáltatásfejlesztési lehetőségeit. A szolgáltatások területén a gyógy-, a wellness és a sportszolgáltatásokkal kapcsolatos kérdésekre fókuszáltunk. A kutatás igazolta, hogy a betegek számára is fontos a kiegészítő szolgáltatás megléte, valamint azok a terápiás rekreációs, sport vagy wellness szolgáltatások rendelkezésre állása, melyek a betegek életminőségét és egészségi állapotát pozitívan befolyásolhatják.
A sajáttulajdonú mobil eszközök információbiztonsági kockázatai
Authors: Fehér-Polgár Pál , Michelberger Pál
Published: September 2018

Ma már el sem tudjuk képzelni mindennapjainkat okoseszközeink nélkül. Úton-útfélen gyakran belebotlunk olyan emberekbe - akár szó szerint is - akik a nap 24 óráján keresztül végzik munkájukat hordozható eszközeiken. Ezen belül is széles körben elterjedtek az olyan vállalati megoldások, melyeknél a munkavállaló saját tulajdonú eszközét - leggyakrabban okostelefonját - nemcsak saját, személyes céljaira, de munkahelyi feladataira is használja, szinte hely- és időkorlát nélkül. Ebben a tanulmányban ennek a munkavégzési gyakorlatnak a vállalati adatok informatikai biztonsági kockázataira fogunk koncentrálni elméleti megközelítésben néhány esettanulmánnyal feltárva a problémakör lényegét. Megalapozzuk ezzel e kockázatok mérhetőségének és csökkenthetőségének kutatását.
Információ-technológiai szolgáltató vállalkozások kiegészítő mellékletének összehasonlító elemzése Magyarországon
Authors: Fenyves Veronika , Bács Zoltán , Zéman Zoltán , Böcskei Elvira , Tarnóczi Tibor
Published: September 2018

Napjaink globalizált és felgyorsult világában a kihívásoknak az a vállalat tud megfelelni, amely rendelkezik a szükséges információkkal és azt gyorsan képes szervezeti tudássá konvertálni. A vállalatok közötti gazdasági kapcsolatokban nagyon fontos információs forrás a számviteli beszámoló. A számviteli beszámoló két alapvető részéből, a mérlegből és az eredmény-kimutatásból, akkor lehet a szükséges információhoz jutni, ha a kiegészítő melléklet tartalmazza azokat az információkat, amelyek hozzájárulnak a beszámoló másik részének a jobb értelmezéséhez. A nem megfelelő tudásra épülő döntéshozatal tovább növeli az egyébként sem alacsony gazdasági kockázatokat.. Kutatásunkban azt vizsgáljuk, hogy a vállalatok által elkészített kiegészítő mellékletek tartalmazzák-e azokat az információkat, amelyek segítségével a partner vállalatokra vonatkozó szükséges pénzügyi ismeretek megszerezhetők. A vizsgálathoz a 62-es TEÁOR számú, főtevékenységként Információtechnológiai szolgáltatás tevékenységet megadó vállalatokat kiegészítő mellékleteit használtuk fel. Szövegbányászat segítségével azt vizsgáljuk, hogy a kiegészítő mellékletek mennyiben felelnek meg a számviteli törvény általi előírásoknak.