bluuebunny/crossref_metadata_2025_split huggingface dataset:
Radiation Protection Strategies in Medical Diagnostic Centers in Lagos State, Nigeria
Authors: Adeniji A R , Ezema I C , Aderonmu P A , Adesipo A O 
Published: November 2019

Abstract
In recent years, Medical imaging has recorded a canonized level of advancement in the medical chronicles of achievement feats. This has made the diagnosis of ailments easy in reducing the death rate of patients. Imaging machines have different functions and some of them use radiation that is dangerous to the human body. Although radiation is important and it is needed for the patients in need of treatment but not needed by the machine operators, staff and visitors of the building where the imaging machines are been housed. The aim is to investigate different design and construction strategies employed to reduce transfer of radiation in various diagnostic imaging centres in Lagos State Nigeria; in order to reduce health risk associated during radiation emission in medical facilities. Qualitative method of research was adopted and data were collected via review of pertinent literature and field work of three diagnostic centres in the study area. The data were analysed using content analysis and presented with sketch and pictures. The finding reveals that lead lining was the most common material used to shield the different diagnostic rooms in the study area. This shielding was not only done for walls but also embedded in the doors. In addition, Lead glass was also used to protect the machine operators from radiation. Finally, this study recommended that other less harmful materials need to be explored for radiation shielding other than the use of Lead. For competency in Educational, professional, curricular practices and even hygienic exigencies; further research may advance investigations to find out other protective materials and strategies that are relevant to medical exploits as well as Architects design specification knowledge for the design of medical facilities.
The place of geoinformatics in waste management, sanitation and health risks prevention in Ado-odo/Ota local government area
Authors: Adeyemi G A , Onimowo D , Oniemayin B I , Eletu A A 
Published: November 2019

Abstract
Increasing population growth, lack of suitable waste treatment and disposal sites, in addition to inadequate equipment for waste recycling, poor town planning, accumulation of waste beside the roads and canals caused by inadequate waste collection and lack of enough data and information on waste generation could be observed as palpable causes of inadequate waste management in our societies, as well as sources of environmental pollution. This paper considered the applications of Geographic Information Systems in the selection of suitable land fill sites in Ado-Odo/Ota LGA. Geospatial data of the study area were obtained, buffer, overlay and intersection analysis were carried out to exclude non-suitable locations and identification of suitable sites. The suitable locations for landfill were selected, and we concluded that GIS is a veritable tool in qualitative decision making in environmental management and sustainable development.
Insight review on impact of infrastructural development in driving the SDGs in developing nations: a case study of Nigeria
Authors: Davies I E E , Nwankwo C O , Olofinnade O M , Michaels T A 
Published: November 2019

Abstract
The Sustainable Development Goals (SDGs) recognize the dominance of infrastructure as a panacea for the nation’s development to improve the quality of people’s lives. In Nigeria, inadequate infrastructure has impaired the prospect of attaining some of these SDGs. Some of the identified barriers causing the poor implementations of SDGs in Nigeria include poverty, poor accountability, inadequate domestic water supply, poor energy supply, poor human capital development initiatives, poor transportation and telecommunication networks, illiteracy level, and environmental degradation. But while the SDGs are a non-enforced agreement, the way and manner of implementation and the conditions under which the state acts in accordance with the agenda were not properly spelled out. However, the success of the SDGs in Nigeria requires commitment from government at all levels to provide adequate funding, financial prudence, stable polity, sound policies, availability of functional infrastructural facilities and ensuring value for money. This will result in achieved opportunities such as the establishment of new businesses, boosting of employment rate, ample growth opportunities, enhance risk-adjusted financial returns to investors, an increase in the rate of youth and adults in formal education and non-formal education, and promoting environment friendliness. This review further recommends that government should address the challenges faced in the area of power, telecommunication, corruption and access to agrarian areas in the country in order to have an inclusive infrastructural development that is positively driving growth. Moreover, assessment of projects should include initial capital investment, operational cost, maintenance, and disposal of the asset which will guarantee more sustainable infrastructure projects that are likely to perform much better through the lifecycle. Thus, successfully achieving the SDGs must involve innovative approaches to infrastructure financing and sustainable public procurement.
Ping-pong reduction for handover process using adaptive hysteresis margin: a methodological approach
Authors: Adewale A A , Ekong E E , Ibikunle F A , Orimogunje A , Abolade J 
Published: November 2019

Abstract
The technology, Long Term Evolution (LTE) developed by 3rd Generation Partnership Project is considered an improved standard in mobile communications when compared to previously attained network standards. LTE with prospects of decreased latency levels and support of downlink and uplink transmission at data rates exceeding 100Mbps and 50Mbps, an effective handover framework needs to be put in place to improve quality of service rendered to the network users and decrease wastage of network resources. This study examines several works carried out on a handover criteria (hysteresis margin) needed for designing an effective handover framework. This margin is based on the received signal strength between both target and serving eNodeBs, and its proper determination amongst other advantages mitigates the rate of unnecessary and repeated handover (ping-pong effect). The model presented in this research integrates the artificial neural network (ANN) mechanism into the determination of hysteresis margin in the LTE handover process which is to minimize handover delay and ping-pong taking into consideration the speed of the user equipment (UE).
Access to Information as a Veritable Strategy for Successful Entrepreneurship in a Developing Country
Authors: Okocha F , Eyiolorunshe T , Idiegbeyan-ose J , Aregbesola A , Owolabi S 
Published: November 2019

Abstract
The paper discussed information access as a useful strategy for successful entrepreneurship in a developing country. It started with the general introduction of the concept information and the role of information in entrepreneurship. It further discussed the strategic role of information access by entrepreneur in Nigeria as compare to other developed countries. It further highlighted the nexus between information and entrepreneurship, it also discussed the challenges of information provision to entrepreneur in Nigeria to include poor infrastructures, unreliable power supply, lack of internet access in most public libraries in developing countries among others, based on these discussion, it was concluded and recommended that the challenges so listed should be addressed in bridging the digital divide, and provision of infrastructures by government and other stake holders that are concerned. This will enable the entrepreneurs in developing countries measure up with those in developed countries and at the same time reduce unemployment and increase the Gross National Product of the country.
Women in banking: Career choice and advancement
Authors: Orbih M U , Imhonopi D 
Published: November 2019

Abstract
The purpose of this paper is to explore the factors that influenced the career choice and identify the barriers related to the career advancement of female bankers. Quantitative and in-depth interview methods were employed in this study. Close ended questionnaires were administered to female bankers in Metropolitan Lagos, Nigeria. Data were analysed using frequency counts, percentages and mean rankings. The findings showed that factors such as employment opportunities, hope for career advancement, personal skills, prestige and attractiveness of bank job, remuneration, educational qualification and job suitability influenced female bankers’ choice of a career. Family responsibilities, strict banking promotional policies and employment policies and practice were identified as barriers that impedes female career advancement. The study also discovered that there is no form of gender discrimination in the banking sector in Lagos state. The study concluded that the findings would help in the better understanding of the career development of female bankers in Lagos state, Nigeria. The study recommended that Banks promote the personal well-being of their female employees, introduce and effectively implement family friendly policies, and review the promotion and employment policies.
Evaluation of jig work on the basis of granulometric analysis of particle size fractions of benefication products in purpose of process optimization
Authors: Surowiak A , Foszcz D , Niedoba T 
Published: November 2019

Abstract
The analysis of hard coal jigging was conducted because of optimal recovery of useful fraction in concentrate and not useful fraction in tailings. The evaluation of the process was conducted on the basis of industrial sampling of coal dust jig and performed granulometric and densimetric analyses of collected products samples in laboratory conditions. In selected size-density fractions of partition products the yields of products were calculated and the amounts of ash and total sulfur were determined. On the basis of the results of granulometric, densimetric and chemical analyses of obtained size-density fractions, balance of partition products and appropriate calculations the beneficiation curves were created which allowed to evaluate the process because of optimization of device work in purpose of achieving higher recovery by possibly highest concentrate quality.
The evaluation of hard coal beneficiation results was done in the paper because of optimal recovery of organic phase in concentrate and mineral components in tailings in aspect of process monitoring. The analysis of obtained characteristics of ability to beneficiation was performed in purpose of selecting optimal technological factors for the needs of optimization of device work.
The efficiency of engaged capital in the WIG-mining index
Authors: Kruk S 
Published: November 2019

Abstract
The main goal of the article is to analyse the relationship between the level of debt and the level of efficiency of using the invested capital. The article is based on the analysis of the subject literature and the use of financial analysis tools. The analysis confirmed the relationship between the debt ratio and Return on Invested Capital. Conducted considerations should be treated as a starting point for further in-depth analysis regarding the impact of the capital structure on the effectiveness of the enterprise.
Influence of grinding media movement on the throughput of dry grinding circuit with electromagnetic mill
Authors: Foszcz D , Wołosiewicz-Głąb M , Krauze O , Ogonowski S , Gawenda T 
Published: November 2019

Abstract
The paper investigates how the movement of grinding media affects the throughput of dry grinding circuit with the innovative electromagnetic mill. General structure of the grinding circuit, control system and its advantages are presented. Three air flows are critical for determining material throughput and providing proper operating conditions of the installation: flow through the working chamber of the mill, through the main classifier and in the recycle stream. They are affected by the moving grinding media. To assess this influence, air speed measurements were taken for different positions of dampers in air streams, for several masses of grinding media and frequencies of the rotating electromagnetic field. For each air stream, a set of polynomial models was identified. Control scheme for the air flows was proposed, including compensation for grinding media movement. Introduction of hierarchical control and distribution of particular control tasks on different layers was necessary.
Technical, technological and environmental aspects of the management of technological waters in mines and concentrators owned by KGHM Polska Miedź S.A.
Authors: Witecki K , Grotowski A 
Published: November 2019

Abstract
Water and Tailing Management System (WTMS) plays a key role in mining and processing technological chain. In general, two separate but dependent systems can be separated: a network of technological waters and tailings. They constitute a system of connected vessels, a perfect example of which is the WTMS owned by KGHM Polska Miedź S.A. and managed by Hydro technical Department (O/ZH). The mining, technological and flotation water transport systems included in the system together with the accompanying facilities and installations cover the area of approx. 15 x 26 km. They combine 3 mines, 3 concentrators (ZWRs), Żelazny Most Tailing Management Facility (TMF) and the Głogów discharge station. This system makes it possible to conduct mining and processing operations by collecting water from mine workings (drainage), supplying concentrators and other installations (filling) with process water, flotation tailing management and discharge of excess water to the environment. The necessity of excess water discharge is associated with a positive balance of the system. This state results from the specific hydrogeological conditions and applied technological solutions, while providing the opportunity to work without the need to extract fresh water from the environment. Working in closed circuit, the technological water network fits in with the principle of the “circular economy”, while meeting the quality requirements of the water both for the sake of issued permits and the flotation process. The global trend in the management of flotation tailings is being observed towards deposition them in thickened form in order to increase the safety of TMF and the best sign in to the BAT requirements. Positive examples obtained in this field by KGHM were possible due to many years of research conducted not only in this direction but also on the reuse of flotation tailings.
Influence of grinding on flotation of industrial semi-product from sedimentary copper ore upgrading process
Authors: Ostrowski K , Bakalarz A , Duchnowska M 
Published: November 2019

Abstract
The effect of the grinding and liberation changes of sulphide minerals on their floatability in the flotation process of concentrate from rougher flotation from the Rudna Concentration Plant (KGHM Polska Miedz SA) was analyzed. It has been found that the upgrading selectivity decreases with the decreasing size of sulphide particles regardless of liberation degree. The best selectivity of flotation was observed for the fully liberated sulphides. Totally locked sulphides and minerals marginally liberated are characterized by very poor upgrading selectivity or even no upgrading. Moreover, for the smallest particles of sulphides (below 20 μm), despite of good liberation, very low selectivity of enrichment is observed. It was found that the application of one-stage grinding of concentrate from rougher flotation in separation circuit can result in higher upgrading selectivity of cleaning stages and higher content of useful minerals in final concentrate.
PSG method for the simulation of carbon particles accumulation in the flotation process
Authors: Kalisz D. , Kuglin K. , Młynarczykowska A. 
Published: November 2019

Abstract
Carbon agglomeration on the surface of gaseous bubbles in the flotation process has been modeled in this paper. The calculations were based on the PSG method and performed for five strictly defined size groups of carbon particles (M=5) for initial sizes 100-400 µm, and mixing energy ε = 0.01 [m2 s−3]. The analysis of the obtained results revealed that the process was much faster for particles with bigger initial size 300 and 400 µm. In this case the time needed for the removal of particles in particular size groups was shortest. It was observed for all analyzed cases that the process was most dynamic in the initial phase, whereas at the end of it the agglomerations considerably lowered because of the decreased number of particles in specific groups.
High-frequency induction heating of shrink-fitting parts of turbogenerators
Authors: Dzliev S V , Pishchalev K E 
Published: November 2019

Abstract
The advantages and disadvantages of induction heating by high-frequency currents during large-sized parts mounting and dismounting are studied. The deviations of the temperature field and the deformation field of the part from the axial symmetry with the horizontal position of the shaft are analyzed. Recommendations were developed on how to take into account these deviations in the technology of mounting and dismounting of the retaining rings of turbogenerators.
Modeling of sudden six-phase and three-phase short circuits of a six-phase turbogenerator
Authors: Chishko S D , Adalev A S , Korovkin N V 
Published: November 2019

Abstract
A demand for the highest possible power density in electrical machinery in some applications often requires a change in conventional and well-known three-phase stator winding solution. This paper discusses high-power turbogenerators with a six-phase winding. Mutual inductance between two three-phase windings requires updating of the equations for transient processes modelling. The equivalent circuits and equations for the dq0-reference frame are summarised, sudden six-phase and three-phase winding short circuit processes of the generator under load are modelled.
Identification of electric traction in the urban electric transport system
Authors: Aykhadeev A , Idiyatullin R , Kisneeva L , Bytakov V , Pavlov P , Litvinenko R 
Published: November 2019

Abstract
The article presents the results of a systematic review of the basis of formation and implementation of electric traction in the urban electric transport system. Its complexity is determined by the fact that various technical, technological, industrial and other subsystems and complexes are included in it, whose main purpose is to satisfy the needs of the population in transportation. Determining the basis for the formation and implementation of electric traction in the system of urban electric transport is a condition for finding methods and means of improving its efficiency, including the energetic one. Based on the proposed approach, urban electric transport was interpreted as a complex production and technical system, which allowed identifying electric traction as an electrical engineering complex, and at the same time as a technological system, and as a technological process of functioning of this system. The results of the study should be interpreted from the standpoint of synergistic ideas that will contribute to the development of the general theory of electric traction in the context of modern scientific methodology.
Control system for vector regulation of power flows in medium voltage network
Authors: Sosnina E N , Chivenkov A I , Lipuzhin I A , Vikhorev N N 
Published: November 2019

Abstract
The article is devoted to the device for automatic control of power flows in smart grids of medium voltage. A description of proposed method of vector regulation of power flows in a power transmission line using a solid-state voltage regulator (SSVR) is given. SSVR allows one to adjust the current in the line by introducing an additional EMF and changing the voltage drop across a network choke with known electrical parameters. A vector diagram of voltages and currents is given, explaining the principles of forming parameters of the current of the network choke. The Vector In and Vector Out virtual instruments for controlling the SSVR input and output voltage converters respectively are developed in the LabVIEW. Virtual instruments regulate the parameters of the vectors and implement the control of electrical potentials on the network choke. The test results of the developed control system confirmed the effectiveness of vector regulation.
Optimizing location and size of distributed generators based on the metaheuristic algorithms for solving network reconfiguration problem
Authors: Cuong L Q , Maclesov A M , Nguyen H D , Valeev I M 
Published: November 2019

Abstract
This paper demonstrates the method of optimizing the location and size of the distributed generators with the aim of reducing active power loss by changing the state of the existing tie and sectionalizing switches on the distribution network. A new algorithm is proposed to solve the distribution network reconfiguration problem based on the Runner-root Algorithm (RRA). In the first stage, the Runner-root algorithm is applied to solve the reconfiguration problem, and the next stage of optimizing the new distribution network configuration takes into account the influence of the location and the size of the distributed generators. The calculation results show that the proposed method can simultaneously solve the problem of optimizing the location and size of distributed generators when reconfiguring the distribution network. The results of the comparison with other studies in the same distribution network system 69 nodes showed that the proposed method is highly effective and can be used for reference in the process of optimizing the operating mode of a distribution network.
Influence of value resistance contact units of switching devices on losses of the electric power in shop networks of low tension
Authors: Gracheva E I , Naumov O V , Gorlov A N 
Published: November 2019

Abstract
The calculation of resistance tightening contact joints of switching devices allowing to consider technical condition of low-voltage switching equipment and to specify the value of the energy emitted in the switching device in the mode of operation electrical networks is presented in article.
Induction plasma heating installation for heat treatment of powder materials
Authors: Lopukh D B , Martynov A P , Vavilov A V , Skrigan I N 
Published: November 2019

Abstract
In this article the work results on the creation at the Department of Electrotechnology and Converter Engineering in ETU “LETI” of a high-frequency induction plasma research installation designed for high-temperature plasma treatment of powder oxide and other materials in order to obtain melted spheres and different dispersion and structure powders, as well as high-temperature plasma surface treatment to give them special properties are presented. The device has already started operation and is currently producing various oxide materials. The operation characteristics of the HFI-plasma torch and the processed materials during powders spheroidization of quartz sand, electro corundum, phosphate glass and melted stabilized zirconium dioxide are obtained.
Numerical simulation of the induction heating process of a disk profile
Authors: Mannanov E , Galunin S 
Published: November 2019

Abstract
This paper presents the developed parametric 3D model of disk heating. The numerical results reflect the change in the temperature profile of the heated pattern depending on the current value, current frequency, air gap size, workpiece thickness, workpiece diameter, heating time, number of inductor turns used and geometrical position elements of the systems “inductor - disk”. The results can be used for parametric studies and setting up the operation mode of installations for various sizes of disks.