Aspects Of Transfer Research Articles

Investigation of convective heat transport in a Carreau hybrid nanofluid between two stretchable rotatory disks

Abstract Hybrid nanofluids (HNFs) have outstanding energy transfer capabilities that are comparable to mono-nanofluids. Materials had appliances in obvious fields such as heat generation, micropower generation, and solar collectors. The objective of this study is to investigate the new aspects of convective heat transfer in an electrically conducting Carreau HNF situated between two parallel discs. In addition to the presumed stretchability and rotation of the discs, physical phenomena like nonlinear radiation, viscous dissipation, Joule dissipation, and heat generation and absorption are considered. The Cu and TiO2 nanoparticles dispersed in engine oil to understand the intricate phenomenon of hybridization. The Tiwari and Das nanofluid model is employed to model the governing partial differential equations (PDEs) and then simplified using boundary layer approximation. The suitable transformations of similarity variables are defined and implemented to change the set of formulated PDEs into ordinary differential equations. The reduced system is solved semi-analytically by the homotopy analysis method. The influences of involving physical parameters on the velocity and temperature are plotted with the help of graphical figures. This study brings forth a significant contribution by uncovering novel flow features that have previously remained unexplored. By addressing a well-defined problem, our research provides valuable insights into the enhancement of thermal transport, with direct implications for diverse engineering devices such as solar collectors, heat exchangers, and microelectronics.

Heat transfer study on a stator-permanent magnet electric motor: A hybrid estimation model for real-time temperature monitoring and predictive maintenance

When electrical machines operate without a specific cooling system, the surrounding environment plays a crucial role in the rise of temperature and the duty cycle of operation. More clearly, a natural convection cooling system with a low value of heat transfer coefficient carries the risk of thermal breakdown, insufficient safety, and reliability. This paper studies the heat transfer aspects of a low-power flux switching permanent magnet (FSPM) motor under natural convection cooling to implement a novel real-time sensor-less temperature monitoring system. Thermal and electromagnetic experiments are carried out to create foundations for transient and steady-state numerical models. A data-driven, deep learning algorithm estimates the core and permanent magnet (PM) eddy current losses in real-time, besides the already available copper and friction losses. Subsequently, a two-node thermal equivalent circuit in a hybrid model with a feed-forward neural network estimates the dynamic temperature profile of windings and PMs. It is indicated that the worst-case estimation error is below 7.5%, and the configuration is applicable under a wide range of operation states and environmental conditions. Lastly, the system, including the power source, FSPM motor, and hybrid temperature estimation unit, will be implemented in MATLAB/Simulink to investigate the fault prediction and operation management capabilities.

A comprehensive framework for circular product-service systems in infrastructure: Enhancing customer-contractor collaboration

Product-service systems (PSS) represent a business model that increases material decoupling and decreases environmental risks while providing customer value. PSS can help realize a more sustainable construction industry, which remains among the largest polluting and waste-generating sectors. Systemic change in the infrastructure sector requires client involvement, which is represented by the government. However, establishing circular PSS is challenging due to the complexities, which need to combine the lifecycle approach, customer-client aspects, new contracting, knowledge transfer, technology, and PSS-specific aspects. It requires ex-ante evaluation of real case studies to increase knowledge and understanding. This article presents a first-of-its-kind framework for infrastructure based on the current literature and analysis of five infrastructure pilots in the Netherlands (bridge deck, digital road lights, guide rails, roads). The final multistakeholder integrated circular PSS framework includes i) lifecycle perspective and circularity, a) materials and b) management, ii) customer-contractor relationship including a) customer-perspective b) co-creation aspects, c) client-customer hierarchy, iii) technology perspective (functions and resources) iv) business aspects such as a) network and b) value creation and retention. The framework allows customer-contractor communication and can serve as decision support. It is applicable to circular PSS where the customer has more involvement in the formulation of PSS.

Teaching for transfer of learning in health professions education: AMEE Guide No. 176

Transfer of learning occurs when past learning is applied to new situations, and also at a varying time from the initial time of learning. Importantly, research in both academic and clinical areas of health professions education has highlighted that transfer of learning often does not successfully occur. Successful transfer is multi-dimensional and occurs when the learner has the required motivation, mental model, metacognitive processes relevant to the task, and the opportunity to transfer their learning to different situations. An essential aspect of successful transfer is the educator. This Guide provides an overview of an integrated model of transfer that can inform a variety of practical teaching strategies in both academic and clinical areas of health professions education.

Improving a shell-tube latent heat thermal energy storage unit for building hot water demand using metal foam inserts at a constant pumping power

The phase transition heat transfer during the melting and solidification processes of phase change materials (PCMs) was modeled in a shell-tube thermal energy storage unit. For the first time, special attention was dedicated to the heat transfer enhancement on the heat transfer fluid (HTF) side by placing metal foam (MF) inserts in the HTF tube. The MF inserts on the HTF side were placed next to the fin bases to produce the maximum heat transfer enhancement. A two-temperature local thermal non-equilibrium model was applied to accurately model the transient heat transfer in the MF domains. To perform a fair heat transfer analysis and consider the hydrodynamic aspects of heat transfer, the pumping power for driving the HTF fluid was kept fixed. The finite element method with automatic time-step control was used to integrate the model equations. Results show that the insertion of the MF in the HTF tube enhances conduction heat transfer but reduces flow for a constant pump power. Using a small amount of MF provides a good flow rate and a convective heat transfer while using a large amount of MF provides good conduction heat transfer but a poor flow rate and convection. A moderate amount of MF inserts results in poor conduction and a poor flow rate, notably increasing the phase transition time. A 5 % MF insert could provide about a 13 % shorter solidification time compared to a 25 % MF insert. Thus, a well-designed and engineered MF insert configuration on the HTF side can reduce the phase transition time and improve the energy storage power.

Lie symmetry neural networking for heat transfer in magnetized williamson fluid (MWF) with heat source (HS) and thermal slip (TS)

In the analysis, design, and optimization of a wide range of engineering applications involving stretching surfaces and fluid flow, the skin friction coefficient (SFC) at a stretching surface with heat transfer is an important parameter that reflects the fluid dynamics, heat transfer characteristics, and surface interactions. Owing such importance, the purpose of present article is offer artificial neural networking remedy for evaluation of SFC for Williamson flow field with thermal slip and heat source effects. The Williamson fluid flow is realized by considering surface stretching with an externally supplied magnetic field. The energy equation is used to address the heat transmission. The constructed differential system for flow field is solved by conjecturing artificial neural networking with Lie symmetry and shooting methods. Artificial Neural Networking (ANN) model is developed to predict the surface quantity namely SFC at thermally magnetized surface. The major findings includes the variation in SFC for pertinent flow parameters and we found that in the presence of heat transfer aspects, the SFC admits declining nature towards Weissenberg number while opposite is the case for magnetic field parameter.

Connecting the Dots: Bridging Innovation Management and Technology Transfer Through ISO 56002

This paper highlights the significance of centralising innovation within organisations to gain a competitive edge in a rapidly changing world. It emphasises the pivotal role of ISO 56002, a standardised innovation management system, in fostering innovation capacity through diffusion, certification and development. By establishing innovation standards, organisations can consistently generate successful innovations, leveraging their resources and knowledge capital. However, technology transfer faces trust and inter-organisational cooperation barriers. ISO 56002 provides comprehensive guidelines to overcome these challenges and bridge standardisation and innovation perspectives. The proposed framework integrates technology transfer with the ISO 56002 system, consisting of five phases: engagement in innovation processes, certification of technology transferors, overcoming barriers, technology transfer agreements and analysing effectiveness. ISO 56002 facilitates collaboration, resource allocation, strategic planning and adopts a customer-centric approach. This framework fills a literature gap, offering organisations a competitive advantage in technology transfer. The study explores the relationship between ISO 56002 guidelines and technology transfer, emphasising collaboration, leadership, planning, support, operation, performance evaluation and improvement. ISO 56002 aligns with various aspects of technology transfer, emphasising sustainability, connectivity and competitiveness. Implementing ISO 56002 drives organisational growth and successful technology transfer.

International legal regulation of the conclusion of agreements on the transfer of technologies and the protection of intellectual property rights during the international transfer of technologies

The article is devoted to the study of international legal regulation of the conclusion of agreements on the transfer of technologies and the protection of intellectual property rights during the international transfer of technologies. The focus is on the activities of international state organizations of the UN system (there is studied the source base of the Body of the UN General Assembly – UNCTAD, the UN Economic Commission for Europe – UNECE, the UN Commission on International Trade Rights – UNCITRAL, special attention is paid to the activities in the development of various aspects of technology transfer of the World IntellectualProperty Organization – WIPO; the main aspects of technology transfer of the TRIPS Agreement of the World Trade Organization – WTO are being defined, as well as the ones of the documents of other international organizations in this field: the World Bank, the International Federation of Consulting Engineers – FIDIC, the European Development Fund. In particular, the author examines main principles and characteristic features of the key documents of these international organizations, as well as approaches to the regulation of certain aspects of technology transfer in international law, that have changed over time.

The Impact of Native Language on English Pronunciation among TESL Undergraduates

In today's globalized world, being fluent in English, including speaking and pronunciation, is crucial, it is frequently a need for academic and professional success in addition to being a great asset. As an English Language teacher, clarity in pronunciation is the utmost importance. However, a lot of the TESL undergraduate students faced trouble in pronouncing English words properly. The influence of the first language (L1) is a profound reason of the inaccuracies in pronouncing English words among undergraduates. This research examines the relationship between the native language and English pronunciation among TESL. This study, conducted through interviews with seven participants, explores the impact of cultural factors, cognates, phonological, and intonation patterns on pronunciation. Thematic analysis reveals the nuanced influences of the participants' native languages on their English articulation. Additionally, the research investigates strategies for improving pronunciation, including individualized plans and peer learning. This research explored both positive and negative aspects of language transfer among participants from diverse linguistic backgrounds. The findings revealed nuanced insights into the impact of native languages on English pronunciation. The findings contributed valuable insights to the understanding of language transfer effects and offer practical recommendations for enhancing English language teaching and learning in TESL programs. Beyond educational implications, this study sheds light on linguistic diversity and has the potential to influence language policies in Malaysia.

Development of new universal correlations for minimum heat flux point for saturated pool boiling of cryogens

This study addresses the critical need for a reliable database for the minimum heat flux (MHF) point in saturated pool boiling of cryogens. Relying on a comprehensive review of the relatively sparse published literature, a key objective of the study is to amass a MHF database, which is then used to investigate influences of various parameters on MHF, assess the accuracy of published correlations, and develop new correlations specifically tailored to cryogenic fluids. By applying stringent point-by-point evaluation criteria, 165 data points for MHF point temperature (Tmin) and 158 data points for MHF point heat flux (q”min) are aggregated, comprising this study's “Consolidated Database” for MHF. This database includes data for liquid helium (LHe), liquid argon (LAr), liquid hydrogen (LH2), and liquid nitrogen (LN2) and boiling from clean as well as treated (coated or oxidized) surfaces. A total of 9 correlations for Tmin and 10 for q”min are evaluated for accuracy against the new Consolidated Database. Leveraging insights from prior correlation results and trends from the new Consolidated Database, new universal correlations are formulated for both Tmin and q”min. The new correlation for Tmin features Mean Absolute Errors (MAEs) of 9.05 % for clean surfaces and 7.7 % for treated surfaces. Similarly, the new q”min correlation shows MAEs of 21.50 % for clean surfaces and 25.22 % for treated surfaces. While the new correlations represent a significant advancement in the development of predictive tools for cryogens, this study points to a need for more comprehensive experimental investigation of heat transfer aspects of cryogens, which will undoubtedly further improve the robustness and accuracy of the new correlations.

Hybrid ferrofluid flow on a stretching sheet with Stefan blowing and magnetic polarization effects in a porous medium

PurposeThis study investigates the behavior of viscous hybrid ferromagnetic fluids flowing through plain elastic sheets with the magnetic polarization effect. It examines flow in a porous medium using Stefan blowing and utilizes a versatile hybrid ferrofluid containing MnZnFe2O4 and Fe3O4 nanoparticles in the C2H2F4 base fluid, offering potential real-world applications. The study focuses on steady, laminar and viscous incompressible flow, analyzing heat and mass transfer aspects, including thermal radiation, Brownian motion, thermophoresis and viscous dissipation with convective boundary condition.Design/methodology/approachThe governing expression of the flow model is addressed with pertinent non-dimensional transformations, and the finite element method solves the obtained system of ordinary differential equations.FindingsThe variations in fluid velocity, temperature and concentration profiles against all the physical parameters are analyzed through their graphical view. The association of these parameters with local surface friction coefficient, Nusselt number and Sherwood number is examined with the numerical data in a table.Originality/valueThis work extends previous research on ferrofluid flow, investigating unexplored parameters and offering valuable insights with potential engineering, industrial and medical implications. It introduces a novel approach that uses mathematical simplification techniques and the finite element method for the solution.

A numerical study on the radiative heat transfer aspects of hybrid nanofluid flow past a deformable rotating cone

A numerical study on the radiative heat transfer aspects of hybrid nanofluid flow past a deformable rotating cone

Content Specific Pedagogical Knowledge and Teacher Knowledge Transfer

Pedagogical knowledge and in particular Content Specific Pedagogical Knowledge (CSPK) has been widely researched and discussed. Teacher training institutions globally have embraced knowledge bases proposed by researchers in their curriculum to prepare teachers for teaching. The transferability of CSPK has, however, received little attention. This article explores the transferability of CSPK by teachers. Using a literature review analysis method, the article raises the questions of why, and how, the need for CSPK transfer and addresses issues surrounding knowledge transfer. Focusing on a spiral curriculum, the transfer is seen more in relation to conceptual connection within a subject and across subjects, and integration of disciplines. The authors argue that teacher training should embrace aspects of knowledge transfer so that teachers are not rendered redundant when curricular changes and when some subjects which teachers have been trained are dropped from the curricular. Further research is recommended.

Performance of elastic ball screen-cleaning device based on DEM-MBD coupling simulation

In seed breeding, the vibrating screen used for pre-sowing grading parental seeds often has the problem of poor self-purification rate. Using elastic balls to clean the plugging seeds and ensure the self-purification of the screen is a viable technical solution. To clarify and improve the operating performance of the elastic ball particles, a DEM-MBD coupling simulation model of the elastic ball screen-cleaning device was established in this study, and a numerical simulation analysis of the complex motion process was carried out. The mechanism of action of the elastic ball was explained more completely from the aspects of excitation force and energy transfer. Through the Plackett-Burman test, it was determined that the vibration frequency has the most significant effect on the excitation force. Multiple linear regression analysis was performed on each factor and the mathematical relationship equation. It was found that when the maximum excitation force was greater than 7 N and the average excitation force was greater than 2 N, the self-purification rate was greater than 95%. The self-purification rate was then increased to 99.81% by variable frequency tests. The variable frequency achieved better self-purification effect.

Comparative flow and thermal transfer aspects of Casson Hybrid Nanofluid and Williamson Hybrid Nanofluid dispersed in the mixture of water and ethylene glycol with variable thermal conductivity

This manuscript is prepared to deal with the comparative fluid flow and thermal transportation aspects of Casson Hybrid Nanofluid and Williamson Hybrid Nanofluid dispersed in the mixture of water and 30% C2H6O2 over an exponentially stretching cylinder. The suction effect, MHD effect, and the impact of variable thermal conductivity are also incorporated into the concurrent flow model. The spherical-shaped Ag and MoS2 are used as nanoparticles. It has been established that the shear stress rate and Nusselt number are lesser for Williamson hybrid nanofluid as compared to hybrid nanofluid, but the opposite is the trend for Casson Hybrid Nanofluid. Also, the skin friction coefficient is very high in Casson Hybrid Nanofluid in comparison to Williamson Hybrid Nanofluid. In addition to this, the thermal transfer rate is found to be enhanced by up to more than 4% in Casson Hybrid Nanofluid as compared to Williamson Hybrid Nanofluid for all the parameters.

When the body speaks: A case discussion of bodily manifestations of introjection and identification with the aggressor

This paper provides an analysis of the patient’s somatic experiences and fantasies during the psychoanalytic psychotherapy of childhood relational trauma. Somatizations and enactments pertaining to childhood traumas are discussed as they expressed aspects of early stigmatizations, social bullying, and parental boundary violations. A central persecutory theme of impending death during the Covid pandemic is discussed as it revealed previously unspeakable persecutory fears. Obsessional somatic preoccupations and fantasies expressed the patient’s sense of inescapable condemnation and annihilation, which in turn portrayed the patient’s fear of parental homicidal wishes toward the patient. Key aspects of this treatment also concerned an analysis of self-endangerment and suicidality as a defensive process of identification with the aggressor. Somatic aspects of transference and countertransference phenomena are explored as an integral part of the analysis. A discussion of the case material with two psychoanalyst colleagues is included.

Flipbook E-Module-Assisted 8e Learning Cycle Model on Improving High School Students’ Concept Mastery on Heat and Heat Transfer Material

Physics concept mastery is a demand that is to be achieved in learning at high school level. In addition, the development of 21st century technology requires teachers to be able to use technology in organising students to learn. This study aims to determine the effect of flipbook e-module-assisted 8e learning cycle model on improving high school students' concept mastery on heat and heat transfer material. This research is a quantitative study that uses quasi experimental design with Nonequivalent Control Group. Participants included 70 students of class XI (eleventh graders) in a MAN (State Islamic High Schools) in Bandung, which were selected using convenience sampling technique. Data collection was done through a pretest and a posttest encompassing as many as 12 items of two tier multiple choice questions on concept mastery. The data analysis used N-gain test to determine the increase in concept mastery, and Mann Withney test to determine the effect of flipbook e-module-assisted 8e learning cycle model on students' concept mastery. The results showed that there was an increase in concept mastery after treatment was given, that is, by 0.60 (moderate). There is a significant difference in the improvement of the concept mastery between the experimental class and the control class, especially in the cognitive aspect of C3, which is 54.65%, and the material aspect of heat transfer, which is 36.42%. In conclusion, flipbook e-module-assisted 8e learning cycle model has an effect on improving students' concept mastery.

Linear temporal stability of Jeffery–Hamel flow of nanofluids

Flow stability plays a key role in transition to turbulence in various systems. This transition initiates with disturbances appearing in the laminar base flow, potentially amplifying over time based on flow and fluid parameters. In response to these amplified disturbances, the flow undergoes successive stages of different laminar flows, ultimately transitioning to turbulence. One influential parameter affecting flow stability is the nanoparticle volume fraction (ϕ) in nanofluids, extensively employed in thermofluid systems like cooling devices to enhance fluid thermal conductivity and the heat transfer coefficient. Focusing on the impact of nanoparticles on Jeffery–Hamel flow stability, this study assumes fluid properties are temperature- and pressure-independent, exclusively examining the momentum transfer aspect. The analysis commences by deriving the base laminar flow solution. Subsequently, linear temporal stability analysis is employed, imposing infinitesimally-small perturbations on the base flow as a modified form of normal modes. A generalized Orr–Sommerfeld equation is derived and solved using a spectral method. Results indicate that, assuming nanofluid viscosity as μnf=μf/(1−ϕ)2.5, nanoparticle effects on momentum transfer and flow stability hinge on the ratio of nano-solid particle density to base fluid density (Rρ=ρs/ρf). For ϕ∈(0,0.1], flow stabilization occurs with ϕ when Rρ<3.5000, while destabilization is observed when Rρ>4.0135. Notably, nanoparticles exhibit a negligible impact on flow stability when 3.5000≤Rρ≤4.0135.

A longitudinal assessment of factors affecting training transfer among new clinical nurse specialists

ObjectiveThis study aimed to explore the determinants influencing training transfer and evaluate how those factors change over time among nurses who graduated from clinical nurse specialist training to provide a theoretical basis for improving the training transfer of clinical nurse specialists (CNSs). MethodsA quantitative longitudinal survey with four rounds of data collection was utilized to measure the influencing aspects of training transfer from June 2018 to December 2019. A total of 46 new CNSs participated in this study, including 30 and 16 nurses receiving training programs for CNSs in Infusion, Wound and Ostomy. The factor influencing training transfer (FITT) questionnaire was used to collect data for the first month (time 1), the third month (time 2), the sixth month (time 3), and the first year (time 4) after training. This questionnaire contains 53 items divided into five dimensions, including managerial support (20 items); hindrance in the organization (6 items); the validity of the training program (10 items); organizational and personal facilitators (11 items); and personal attitudes towards training transfer (6 items). ResultsThe influencing factors of CNSs transfer decreased over time, with managerial support, hindrance in the organization, the validity of the training program, and personal attitudes towards training transfer changing statistically over time (P < 0.05), and no statistical difference in organizational and personal facilitators over time (P = 0.229). During early after training (the first month and the third month after training), hindrance in the organization is the biggest obstacle to training transfer. During the later of training (the sixth month and first year after the training), managerial support is the biggest obstacle to training transfer. Overall level of influencing factors of training transfer decreased in three months after training among Infusion nurses (P < 0.001), and Wound and Ostomy nurses decreased in the first year after training (P < 0.001). ConclusionsThe trend and level of training transfer predictors decreased depending on time. Clarifying the factors influencing transfer and its patterns may help nursing managers enhance the implementation and impact of nurse specialist training.

Food Preparation and Cookbooks as a Medium of Everyday Contact between Jews and Christians in the Habsburg Monarchy and Imperial Germany

Abstract In the early nineteenth century, Jewish cookbooks appeared on the Central European book market for the first time. So far, these manuals have been studied primarily from the perspective of the preservation of Jewish identity, that is, as a marker of the extent to which kashrut could be preserved in the face of increasing acculturation to non-Jewish society. Little attention was paid to aspects of transfer or entanglement between Jewish and non-Jewish foodways despite the central role of food in everyday life. In my paper, I try to map possible encounters between Jews and Christians in the area of food preparation and eating outside one’s home before analyzing several Jewish and general cookbooks appearing in the Habsburg Monarchy and Imperial Germany. The fact that also non-Jewish cooking manuals integrated dishes perceived as Jewish indicates mutual influence and makes it evident that there was more Christian interest in Jewish foodways than assumed.