bluuebunny/crossref_metadata_2025_split huggingface dataset:
Induction heating in estimation of thermal properties of conductive materials
Authors: Zgraja Jerzy , Cieslak Adam 
Published: March 2017

Purpose
The purpose of the research was to develop a method for the determination of temperature characteristics of thermal diffusivity and specific heat on a single and the same stand, powered from an inverter for induction heating. Determination of the thermal diffusivity has been based on the idea of the pulse method. Searched solutions allowed to reduce inaccuracy of the pulse method when such an unusual source of pulse of energy is used.

Design/methodology/approach
Coupled electromagnetic and thermal calculations were carried out to verify proposed methods for estimating thermal properties of an induction heated charge. Presented methods were applied into a real laboratory stand and they were examined experimentally.

Findings
Achieved results of calculations allow to estimate thermal properties of the induction heated charge with 2 and 5 per cent of uncertainty, respectively, for heat capacity and thermal diffusivity. It gives possibility to use results as an input for further proceedings connected with estimation of electrical parameters in a more complex system.

Practical implications
Presented methods of estimating thermal properties of the induction heated charge were verified experimentally on a dedicated laboratory stand. It gives a practical possibility to implement previously established assumptions and examine them. This is a significant step toward the construction of an easy-to-use device for a comprehensive determination of material parameters of metals directly in the heat treatment plant.

Originality/value
This study presents a trial of implementation of induction heating as a source of energy in the impulse method for estimation of thermal properties of the material. Additionally, it presents a process of improving results achieved with the flash methods which were presented in previous papers. The method of estimation of specific heat which uses induction heating as the heat source was presented too.
Design concepts of induction mass heating technology based on multiple-criteria optimization
Authors: Pleshivtseva Yuliya , Rapoport Edgar , Nacke Bernard , Nikanorov Alexander , Di Barba Paolo , Forzan Michele , Lupi Sergio , Sieni Elisabetta 
Published: March 2017

Purpose
The purpose of this paper is to describe main ideas and demonstrate results of the research activities carried out by the authors in the field of design concepts of induction mass heating technology based on multiple-criteria optimization. The main goal of the studies is the application of different optimization methods and numerical finite element method (FEM) codes for field analysis to solve the multi-objective optimization problem that is mathematically formulated in terms of the most important optimization criteria, for example, maximum temperature uniformity, maximum energy efficiency and minimum scale formation.

Design/methodology/approach
Standard genetic algorithm (GA), non-dominated sorting genetic algorithm (NSGA) and alternance method of parametric optimization based on the optimal control theory are applied as effective tools for the practice-oriented problems for multiple-criteria optimization of induction heaters’ design based on non-linear coupled electromagnetic and temperature field analysis. Different approaches are used for combining FEM codes for interconnected field analysis and optimization algorithms into the automated optimization procedure.

Findings
Optimization procedures are tested and investigated for two- and three-criteria optimization problems solution on the examples of induction heating of a graphite disk, induction heating of aluminum and steel billets prior to hot forming.

Practical implications
Solved problems are based on the design of practical industrial applications. The developed optimization procedures are planned to be applied to the wide range of real-life problems of the optimal design and control of different electromagnetic devices and systems.

Originality/value
The paper describes main ideas and results of the research activities carried out by the authors during past years in the field of multiple-criteria optimization of induction heaters’ design based on numerical coupled electromagnetic and temperature field analysis. Implementing the automated procedure that combines a numerical FEM code for coupled field analysis with an optimization algorithm and its subsequent application for designing induction heaters makes the proposed approach specific and original. The paper also demonstrates that different optimization strategies used (standard GA, NSGA-II and the alternance method of optimal control theory) are effective for real-life industrial applications for multiple-criteria optimization of induction heaters design.
Inverse technique for determining temperature dependence of material properties
Authors: Pánek David , Kotlan Václav , Hamar Roman , Doležel Ivo 
Published: March 2017

Purpose
This paper aims to present a methodology of finding temperature dependencies of selected physical parameters of metals. The method is based on the combination of measurement of the surface temperature of material during the process of heating and subsequent solution of the inverse problem using multi-parametric optimization.

Design/methodology/approach
The methodology is based on measurements and numerical solution of the forward and inverse problem, taking into account all involved nonlinearities (saturation curve of the processed steel material and temperature dependences of its physical parameters). The inverse problem is solved by a genetic algorithm.

Findings
The suggested methodology was successfully verified on several metal materials whose temperature-dependent parameters are known. The calculated and measured results exhibit a very good accordance (the differences do not exceed about 10 per cent for room and higher temperatures).

Research limitations/implications
At this moment, the methodology successfully works when the temperature dependence of just one material parameter is to be found (which means that the temperature dependencies of other parameters are known). The accuracy of results also depends on the correctness of other input data.

Practical implications
This paper provides a relatively easy possibility of finding the temperature dependencies of thermal conductivity or heat capacity of various alloys.

Originality/value
The paper proposes a methodology of finding the temperature dependence of a given material parameter that is not known in advance (which is of great importance in case of alloys).
Emissivity compensated infrared thermometry for planar materials
Authors: Osta Marta , Carretero Claudio , Blasco Pilar , Carretero Enrique , Alonso Rafael 
Published: March 2017

Purpose
This paper aims to analyze the conical-shaped compensator applied to infrared (IR) thermometry for planar materials.

Design/methodology/approach
The compensator for the IR thermometry system has been analyzed by means of numerical simulations performed in a commercial finite element analysis tool. Afterwards, the characteristics of a final system have been proposed. The simulation results have been validated by means of experimental measurements performed in a prototype of the proposed system.

Findings
The proposed conical shape geometry of the compensator is suitable to reduce the errors associated with the temperature estimation by IR thermometry when emissivity of the material is not known with adequate accuracy.

Practical implications
This work proposed an arrangement of conical-shaped compensator to increase the precision in the IR radiation thermometry of planar materials.

Originality/value
In this paper, the conical shape geometry is proposed instead of the classical semi-spherical geometry for the compensator of an IR radiation thermometry system with the purpose of reducing the thickness of the complete system. This new proposal can be advantageous when geometrical constraints are imposed.
Numerical modelling of induction heated multi-zones rubber vulcanization process
Authors: Ebel Wladimir , Nikanorov Alexander , Baake Egbert 
Published: March 2017

Purpose
The purpose of this paper is to research a multi-zone rubber vulcanization process heated by induction.

Design/methodology/approach
The design is an abstract setup model with two zones, where the homogene rubber compound is heated with different regimes. Simulation is completely done in ANSYS Mechanical by the finite element method solution. The research is made mostly simulative.

Findings
The results show that it is possible to obtain a factor-three vulcanization level difference in a core of a 20-mm rubber plate in a distance of less than 60 mm, while the heating is done from the side of the surface.

Originality/value
The originality is the combination of rubber vulcanization with a dynamic heat source in a form of electromagnetic induction applied on the mold form. This allows a high level of control of the vulcanization process of the rubber compound.
Stereotype threat effects on African American and Latina/o Elementary students tested together
Authors: Wasserberg Martin James 
Published: March 2017

PurposeThis study aimed to investigate whether a diagnostic testing condition leads to stereotype threat effects for African American and Latina/o children (N= 81) when tested together at an urban elementary school in Miami, Florida.Design/methodology/approachTo analyze the effect of stereotype threat on participants’ reading test performance, a 2 (race/ethnicity) × 2 (test condition) ANOVA was conducted.FindingsResults indicated that presenting a reading test as diagnostic of abilities hindered the performance of African American children but not of Latina/o children.Practical ImplicationsA relationship to Latina/o racial identity is explored as well as suggestions for developing interventions capable of attenuating stereotype threat effects for African American children.Originality/valueIn past research, Latina/o children have been demonstrated to be negatively affected by stereotype threat when tested alone or in the presence of a White comparison group (McKown and Weinstein, 2003; Nader and Clark, 2011). However, the Latina/o participants in this study, tested with an African American comparison group, were unaffected by stereotype threat trending toward experiencing stereotype lift. The present findings posit questioning as to whether Latina/o racial identity moderates stereotype threat effects and how it plays out in elementary schools.
Linguistic hegemony today: recommendations for eradicating language discrimination
Authors: Scott Lakia M. , Venegas Elena M. 
Published: March 2017

Purpose
The purpose of this paper is to discuss issues of contemporary language conflict in educational contexts.

Design/methodology/approach
This is a conceptual paper which examines current educational practices and policies through the lens of linguistic hegemony.

Findings
The authors identify three primary areas in which linguistic hegemony persists at present, including English-only policies, varied perspectives on language difference and harsh graduation mandates.

Originality/value
The authors extend upon Antonio Gramsci’s notion of hegemonic culture as well as Robert Phillipson’s concept of linguistic imperialism in identifying current instances of linguistic hegemony in educational policies and practices throughout the USA.
The identities of the Ethiopian community in Israel
Authors: Baratz Lea , Kalnisky Esther 
Published: March 2017

Purpose
This study aims to investigate the linkage of identity of new and veteran immigrant students of the Ethiopian community in Israel, by examining their attitudes to children’s literature books written simultaneously in Hebrew and Amharic. The data were collected using focus groups of Ethiopian students attending a teacher training college. The main findings revealed that they referred to two major types of identity: one type is an unreconciled identity, characterized by defiance, which seeks to minimize the visibility of one’s ethnic group within the main culture and tries to adopt the hegemonic identity, whereas the other type of identity contains the original ethnic identity and – in contrast to the first type – tries to reconcile it with the hegemonic culture.

Design/methodology/approach
This is a qualitative study, which emphasis was on participants’ attitudes, beliefs and perceptions (Kalka, 2003). The goals of the research were to examine identity perceptions of students of the Beta Israel community, as they are exposed to bilingual literary works in Hebrew and Amharic.

Findings
The main findings revealed that they referred to two major types of identity: one type is an unreconciled identity, characterized by defiance, which seeks to minimize the visibility of one’s ethnic group within the main culture and tries to adopt the hegemonic identity, whereas the other type of identity contains the original ethnic identity and – in contrast to the first type – tries to reconcile it with the hegemonic culture.

Research limitations/implications
This paper has shed light on an important subject and it would be worthwhile to continue the study using other methodologies.

Practical implications
This paper contributes to the structuring of a cultural code that serves to organize social meaning and establish individuals’ identity.

Social implications
This awareness enriches the basis of their own values and allows them to enrich their attitude to their future pupils, for example, to recognize the value of local culture versus that of the immigrants’ place of origin, and to develop an understanding and acceptance of the diversity in the classroom. As they take part in building a multicultural Israeli education framework, dealing with identity patterns is also the key to their own integration in society.

Originality/value
The originality of the study lies in the usage of two new concepts – unreconciled and reconciled – as referring to the immigrants’ identities.
Energy system retrofit in a public services building
Authors: Galvão João Rafael , Moreira Licinio , Gaspar Gonçalo , Vindeirinho Samuel , Leitão Sérgio 
Published: March 2017

Purpose
Taking into account the current relevance of the concept of smart city connected with the Internet of Things, this work aims to study the implementation of this concept by applying a new energy model in an existing public building. The purpose of this paper is to enhance the sustainability and energy autonomy of the building.

Design/methodology/approach
The building referred to in the case study is a library, and simulations related to the ongoing study are based on an energy audit, comprising a survey on electrical and thermal energy consumption. The innovative proposed model consists of a mix of energy production processes based on photovoltaic panels and biomass boilers. Economic analysis of the energy model has already yielded some results regarding the payback on investment, as well as avoided emissions in the context of development of a low-carbon economy with avoided emissions and socioeconomic advantages.

Findings
It is possible to enhance the sustainability of the library studied by the retrofit of the current energy system. With the integration of photovoltaic panels and the conversion or replacement of boilers from natural gas to biomass, the GHG emissions could drop around 121 t CO2 per year. Another benefit would be the inclusion of endogenous resources over imported energy resources. The payback period for the measures proposed ranges from 2.5 to 8 years, proving that the increase in environmental sustainability is viable.

Originality/value
The intention here is to implement the concept of smart city, in more sustainable buildings, bringing them to the lowest possible energy consumption levels, hence increasing performance and comfort. Also, taking into account that the energy-consuming buildings are already constructed, it is urgent to reconvert them to lower the use of energy and emissions using technologies based on renewable energy, boosting the use of local resources.
Geochemical speciation and risk assessment of metals in sediments of the Lobo-Broa Reservoir, Brazil
Authors: Cervi Eduardo Cimino , Fernandes Felippe , Miranda Renato Billia de , Mauad Frederico Fábio , Michalovicz Leandro , Poleto Cristiano 
Published: March 2017

Purpose
Brazilian sediment quality criteria were established based on pseudo-total metal contents, which is not suitable to determine their bioavailability and the ecological risk for aquatic biota. Therefore, the geochemical speciation of five metals (Cu, Fe, Ni, Pb and Zn) was determined to assess the distribution and ecological risk of sediments in a tropical shallow reservoir from Brazil. The paper aims to discuss these issues.

Design/methodology/approach
A survey of metals in ten representative stations of surface sediments (0-20 cm) from Carlos Botelho (Lobo-Broa) Reservoir was conducted during the dry season in April 2014. Sediment parameters were measured in situ. The geochemical speciation of metals was carried out using the modified three-stage BCR-701 procedure (Davutluoglu et al., 2011) and compared with pseudo-total metal contents.

Findings
Contamination at S-1 and S-8 was more severe than other sampling sites, especially for Cu, Ni, Pb and Zn. Metals such as Cu, Ni and Zn occasionally may be associated with adverse biological effects based on the comparison with sediment quality guidelines. The risk assessment code suggests no risk for Fe and low risk for Cu and Ni.

Originality/value
Geochemical speciation of metals could be useful in developing effective management strategies to control metal pollution in the Lobo-Broa Reservoir. Substantial amounts of Pb (classified as medium risk) were bound to humic substances and/or insoluble metal sulfides, and could pose serious risk to the benthic community through the food chain. Zinc at S-1, S-3 and S-8 showed high risk, indicating that an appreciable portion of Zn could be available to aquatic biota.
Looking ahead to Platform 2.0: participant feedback and institutionalization
Authors: Bueermann Jim , Escamilla Justin H. , Hartnett Susan M. 
Published: March 2017

Purpose
The National Police Research Platform provided unprecedented data about police performance, but what did the agency heads think of this research program and the results? How useful were the findings for police practice and what more is needed? The purpose of this paper is to answer these questions and explore ways to translate the findings and sustain the Platform in the future.

Design/methodology/approach
Chiefs and sheriffs from the 100 participating agencies were invited by e-mail to take an online feedback survey about their experiences with the Platform. Data from 64 agencies were analyzed.

Findings
The majority of chief executive officers rated their overall experience with the Platform as positive, found the results useful and reported that the findings caused them to make changes, rethink things, and identify unforeseen issues. Most of them also expressed a willingness to participate in future Platform initiatives, but many felt additional guidance would help with interpreting findings and identifying next steps. This paper discusses how the Platform can respond to feedback and continue advancing the science of policing. Mainly, this can be achieved by engaging key organizations and providing routine feedback and education to participating agencies and the field at large.

Originality/value
This paper addresses previously unanswered questions about the utility and future of the National Police Research Platform from a police management perspective. It includes a preliminary discussion about how to sustain the Platform and ensure that research findings are translated into practice.
The impact of an IT governance framework on the internal control environment
Authors: Rubino Michele , Vitolla Filippo , Garzoni Antonello 
Published: March 2017

Purpose
The purpose of this paper is to analyze how an IT governance framework [Control Objectives for Information and related Technology (COBIT)] influences the control environment and the internal control system. In particular, it aims to illustrate how the COBIT’s structure and processes impact on the seven categories of factors that compose the control environment.

Design/methodology/approach
This paper aims to highlight how an IT governance framework with its processes enables to improve the control environment assessment and implementation.

Findings
The analysis indicates that the implementation of the COBIT framework provides some indications for managers and auditors, which must implement or assess internal control system.

Practical implications
The adoption of the framework allows managers to focus effectively on integrating, aligning and linking processes. This improves the understanding of the key aspects connected to the control environment. In addition, the adoption of the framework allows overcoming some limitations regarding the Committee of Sponsoring Organizations framework.

Originality/value
This paper addresses an area of relevance to both practitioners and academics. This analysis focuses on Accounting Information Systems themes and, through the examination of an IT governance framework, suggests solutions and tools than can help managers and auditors to address the control environment assessment.
The implementation of electronic recordkeeping systems
Authors: Pan Weimei 
Published: March 2017

Purpose
This study aims to present the findings of the first phase of a project entitled Putting the “Fun” Back in “Functional”, which has been investigating the socio-technical issues surrounding users’ interaction with electronic recordkeeping systems. The ultimate goal of the project is to improve that interaction by positively influencing the way in which individuals perceive their work practices and the tools they use to accomplish them. In its first phase, the project considered the implementation of such systems for the purpose of gaining a better understanding of the factors and processes that contribute to its success.

Design/methodology/approach
Semi-structured interviews were conducted with 17 public employees from a large provincial government and a large city government in Canada about two information systems (ISs) – a meeting management system and an Electronic Documents and Records Management System.

Findings
Several salient themes emerged from the research data, including the value accorded to information and records, the implementation of electronic recordkeeping systems as a complex process, the appropriation of electronic recordkeeping systems, understanding users, ease of use and information/records specialists as part of the solution. Analysis of these themes shows that many of them can be explained through theories developed in the IS field.

Research limitations/implications
The results show that many themes are common across the records management and IS fields. Further, the results indicate the applicability of theories in the IS field to explain and predict the implementation of electronic recordkeeping systems.

Originality/value
This study is one of few that explicitly draw on IS theories to understand the implementation of electronic recordkeeping systems. The results of this study open up many opportunities for future research on electronic recordkeeping systems.