Concept Of Energy Research Articles

Troubling and diffracting Winnicott’s pioneering approach to playing through Deleuze’s ontology for early childhood education

ABSTRACT This paper diffracts Deleuze and quantum physics through Winnicott’s work to argue for an enrichment to playing. The roots of the play-cognitive hierarchy in Freudian psychoanalysis makes visible that progression and the stages that a child must pass en route to rationality continue to feed educational assumptions that a child must leave playing behind in order to learn. Addressing critiques of Freud’s psychosexual theory of child development, I introduce Winnicott’s work on playing as creative activity and transitional phenomena which cast playing in a positive light. I then turn to Deleuze’s critique of Freud’s foundational concepts of child development influenced by Newtonian physics to argue that a Deleuzian concept of energy aligns with quantum physics, which unsettles the binary play-cognition hierarchy. I introduce a vignette to illustrate a rich array of concepts involved in playing that are read through Winnicott. In the final step, I argue that Winnicott’s transitional object provides a juncture with Deleuze’s concept of the partial/virtual object paving the way to graft an alternative and more processual ontology onto Winnicott’s work on playing that acts beside cognitive connections in ways that bring learning alive and liberate teachers to enter less constrained relationships with children.

Modeling and mathematical approach for mechanical natural frequencies of structural plates with free edges

The current study aims to demonstrate an easy mathematical procedure and simple to be used by engineers to maintain the mechanical natural frequencies (Eigen values of free vibration) of thin rectangular structural plates with free edges included in boundary conditions. The reason for this easiness and simplicity is that new method of analysis depends mainly on using mechanical minimum energy concept represented in the Rayleigh–Ritz method with appropriate real polynomials as admissible functions. The new procedure guides these functions to satisfy the boundary conditions at the middle points on the free edges of the plate beside the nodal points of the vibration modes along each edge direction. Therefore, there are no complicated or imaginary terms in the developed functions while they lead to surprisingly acceptable and even accurate results when compared with other works and Ansys program models.

Complex dislocation loop networks as natural extensions of the sink efficiency of saturated grain boundaries in irradiated metals.

The development of radiation-tolerant structural materials is an essential element for the success of advanced nuclear energy concepts. A proven strategy to increase radiation resistance is to create microstructures with a high density of internal defect sinks, such as grain boundaries (GBs). However, as GBs absorb defects, they undergo internal transformations that limit their ability to capture defects indefinitely. Here, we show that, as the sink efficiency of GBs becomes exhausted with increasing irradiation dose, networks of irradiation loops form in the vicinity of saturated or near-saturated GB, maintaining and even increasing their capacity to continue absorbing defects. The formation of these networks fundamentally changes the driving force for defect absorption at GB, from "chemical" to "elastic." Using thermally-activated dislocation dynamics simulations, we show that these networks are consistent with experimental measurements of defect densities near GB. Our results point to these networks as a natural continuation of the GB once they exhaust their internal defect absorption capacity.

Geothermal energy concept applied to All-Air HVAC system

The novel method of combining geothermal energy with an all-air heating, ventilation, and air conditioning (HVAC) system is presented in this work. A building in Lebanon serves as the case study, which aims to determine the necessary mass flow rate for the conditioned space. Rather than permitting ambient air to enter the Air Handling Unit (AHU) directly, the plan calls for a 2-meter-deep geothermal duct to be buried. By adjusting the air temperature prior to it entering the AHU, this geothermal duct helps to improve the efficiency of the HVAC system and lowers the AHU’s yearly energy usage. Furthermore, the idea guarantees that there will always be 100% fresh air available, which means that the all-air HVAC system won’t need to recycle treated air from the conditioned space—also known as return air. According to the findings, the heat rate of the geothermal duct may reach 210 kW, which would result in a large decrease in CO2 emissions and cost savings for the HVAC system.

Students’ Alternative Concept on the Topic of Energy in Life

This research aims to get the alternative concepts of students regarding the concept of energy in life using integrative instruments. The concept of energy in life consists of two topics, photosynthesis and cellular respiration. A sample of 375 students was established using the random sampling technique. They were from 14 junior high schools in Palembang City using the stratified cluster sampling. The instrument used consists of 30 free-response. The results of this research show that students understand the concept that photosynthesis can only occur in leaves (23.70%) and takes place during the day (33%) by utilizing oxygen (25.80%) while existing sunlight functions as the lighting in the photosynthesis process (17.20%) and chlorophyll plays a role in providing coloring to plants (16.50%). On the topic of cellular respiration, students understand that cellular respiration is an activity for the formation and addition of energy in living things (30.40%) and can occur in all parts of the body of living things (31.30%). Both ordinary cellular respiration and fermentation are carried out utilizing oxygen (72.40%). The results show that the alternative concepts possessed by students are very diverse with basic concepts, even though these basic concepts have been studied at previous levels of education.

Exploring Work and Energy Concept with Indonesian Traditional Game "Egrang": An Ethno-pedagogical Approach to Physics Learning

Egrang are a traditional Indonesian game that can be used as a learning medium. This research aims to analyze the physical concepts of work and energy in the traditional game "Egrang" through an ethno-pedagogical approach. This research was conducted with a descriptive review. The learning analysis stage uses a literature review by reviewing several journals to be analyzed in accordance with existing physics concepts, namely the concept of work and energy and ethno-pedagogical approach analysis. The research results found that the concepts of work, kinetic energy, potential energy and mechanical energy can be explained using stilts. And in implementing learning, you can use 5 learning steps with an ethno-pedagogical approach. It is hoped that these results can serve as an initial study at the implementation stage in schools to prove the effectiveness of learning

A Note on the Laplacian Energy of the Power Graph of a Finite Cyclic Group

In this study, the Laplacian matrix concept for the power graph of a finite cyclic group is redefined by considering the block matrix structure. Then, with the help of the eigenvalues of the Laplacian matrix in question, the concept of Laplacian energy for the power graphs of finite cyclic groups was defined and introduced into the literature. In addition, boundary studies were carried out for the Laplacian energy in question using the concepts the trace of a matrix, the Cauchy-Schwarz inequality, the relationship between the arithmetic mean and geometric mean, and determinant. Later, various results were obtained for the Laplacian energy in question for cases where the order of a cyclic group is the positive integer power of a prime.

Effectiveness of Cooperative Problem Solving on Energy Concept in Physics Learning for Improving Students' Creative Thinking Skills

This study aimed to determine the effectiveness of the cooperative problem solving learning model in improving students’ creative thinking skills on the concept of energy. The research method used is a quasi-experimental design with a pretest-posttest nonequivalent control group design. The research was conducted at Garut. The research population were students of class X MIA 1-10. The sampling technique used was cluster random sampling. A total of 60 students of class X MIA 1 and 9 were selected, (41 female and 19 male). Students’ creative thinking ability is obtained from pretest and posttest in the form of an essay test of 12 questions. The improvement of each student’s creative thinking skills (Torrance) indicators to the concept of energy was obtained from the calculation of N-Gain with the values of smoothness (0.85), flexibility (0.56), and elaboration (0.72). The effectiveness of the learning model was tested using t-test hypothesis with the assistance of the SPSS version 28 proving that there is an increase in creative thinking skills after the implementation of cooperative problem-solving learning model on energy concept. Thus, the cooperative problemsolving learning model is very effective to be used as a solution in improving students’ creative thinking skills. Keywords: cooperative problem solving, energy concept, creative thinking skills

Modeling the improved hydrogen embrittlement tolerance of twin boundaries in face-centered cubic complex concentrated alloys

With increasing interest in hydrogen as an alternative fuel, there is a need to develop structural alloys with improved resistance to hydrogen embrittlement (HE) for application in the new hydrogen economy. Complex concentrated alloys (CCAs), which include high entropy alloys and their derivatives, medium entropy alloys, are a new class of structural materials, some of which have reported improved HE resistance. While some studies have suggested that the improved HE resistance in CCAs with the face-centered cubic (fcc) crystal structure may be due to the high density of nanotwins within them, a detailed mechanistic understanding is yet to be developed. Towards that end, following the approach of Zhou, Tehranchi and Curtin, we employ a density functional theory-informed Griffith–Rice model22This type of model has also been referred to in the literature as the Rice–Thomson model. In this work, we refer to it as the Griffith–Rice model to reflect that the concept of unstable stacking fault energy was introduced into the model due to Rice (1992). to predict the ductile or brittle response of a crack tip interacting with twin boundaries (TBs) in a model fcc CCA, CrCoNi, both in the absence of and presence of hydrogen. Both the model and molecular dynamics simulations predict that TBs in fcc alloys are not inherently more susceptible to HE than the bulk matrix, and could in fact improve HE resistance by retarding cracks while promoting dislocation emission along the TB. Thus, designing fcc CCAs with a high density of nanotwins or utilizing gradient nanotwinned structures could be a way forward for realizing alloys with high HE resistance.

Minimum Degree Energy of Graphs and Pebbling Graphs

Objectives: The minimum degree energy concept is applied to pebbling graphs. This study establishes a connection between the minimum degree energy of graphs and the minimum degree energy of pebbling graphs by applying the lowest degree energy of pebbling notion to twenty standard graphs. Methods: The minimum degree energy of pebbling graph with the matrix whose was calculated using . The characteristic polynomial of the minimum degree, is must be found from the matrix. Next, the eigen values of the matrix were calculated using and the sum of all the eigen values gives the minimum degree energy. The lower and upper bounds for the minimum degree energy of graphs are established along with the algorithm for computing the minimum degree energy of graphs. Findings: The lower and upper bounds were found for the minimum degree energy of pebbling graphs. For twenty standard graphs and pebbling graphs, the minimum degree energy values were calculated, and their relation was tabulated. Novelty: Pebbling graphs were subjected to the minimal energy idea and a relationship was found between the minimum energy of pebbling graphs and the minimum energy of graphs in general. Keywords: Energy, Minimum degree energy, Grotzsch graph, Pebbling graph, Data mining

A Characteristic Curve Remote Laboratory for School and University

Remote laboratories play a pivotal role in facilitating teaching and learning experiences, offering unique opportunities beyond traditional classroom settings. The project OnLabEdu (Online Laboratories for School Education) aims the development of remote laboratories for both, schools and university-level students, complete with the development of appropriate accompanying educational resources. This paper introduces a characteristic curve remote laboratory with a first-developed learning arrangement on RGB LEDs and the interplay of energy, forward voltage, and wavelength of light. Drawing from the model of educational reconstruction, the learning arrangement is based on a profound clarification of the scientific content and considering students’ perspectives. Against the background of a design-based research approach, the learning arrangement was already evaluated with high school students through probing acceptance interviews. Now we are interested if the learning arrangement also fits to tertiary level students. Therefore, we conducted six probing acceptance interviews with pre-service teacher students, hailing from physics (n=3) and non-physics (n=3) backgrounds. The primary objective of the evaluation was to identify potential barriers to learning and elements that promote a stimulating learning environment along with the operation of the remote laboratory for the tertiary level. The findings revealed similar challenges of tertiary-level students and high school students. We detected students’ challenges with technical terminology as well as explaining the term forward voltage and its connection to the concept of energy. These results give initial ideas for a re-design of the learning arrangement to address the identified issues and make the learning arrangement suitable for tertiary level students.

Aligning Net zero energy, carbon Neutrality, and regenerative concepts: An exemplary study of sustainable architectural practices

This paper introduces an innovative approach that combines Net Zero Energy (NZE), Net Zero Carbon (NZC), and Regenerative principles, redefining sustainable architecture in Iran. Focusing on a residential "attached house," the study employed strategies like thermal insulation, Low-E glass, shading, and renewable energy sources. Results show a 45 % improvement in thermal performance, reducing heating gas usage by over 42 % and electricity usage by 8 %. With shading, heating and cooling demands decreased by 51.7 % and 12.55 %, respectively. Swapping conventional walls for a thermal mass system led to a 74 % reduction in heating gas and a 17.2 % cut in cooling electricity. Additionally, PV systems supply up to 90 % of electricity needs. Environmental assessments revealed that the RM4 building achieved a 20 % reduction in environmental impacts, which increased to 65 % with PV systems and Solar Water heaters. All measures reduced the building's carbon offset by over 90 %, while greywater recycling and rainwater harvesting reduced water consumption emissions by 74 %. Using recycled materials, the Zero Carbon Buildings (ZCBs) model achieved a 68 % reduction in carbon emissions compared to the baseline and 27 % compared to the Zero Energy Building (ZEB) model, with a 67 % higher circularity.

Spontaneous Imbibition and an Interface-Electrostatics-Based Model of the Transition Zone Thickness of Hydrocarbon Reservoirs and Their Theoretical Interpretations

The transition zone (TZ) of hydrocarbon reservoirs is an integral part of the hydrocarbon pool which contains a substantial fraction of the deposit, particularly in carbonate petroleum systems. Consequently, knowledge of its thickness and petrophysical properties, viz. its pore size distribution and wettability characteristic, is critical to optimizing hydrocarbon production in this zone. Using classical formation evaluation techniques, the thickness of the transition zone has been estimated, using well logging methods including resistivity and Nuclear Magnetic Resonance, among others. While hydrocarbon fluids’ accumulation in petroleum reservoirs occurs due to the migration and displacement of originally water-filled potential structural and stratigraphic traps, the development of their TZ integrates petrophysical processes that combine spontaneous capillary imbibition and wettability phenomena. In the literature, wettability phenomena have been shown to also be governed by electrostatic phenomena. Therefore, given that reservoir rocks are aggregates of minerals with ionizable surface groups that facilitate the development of an electric double layer, a definite theoretical relationship between the TZ and electrostatic theory must be feasible. Accordingly, a theoretical approach to estimating the TZ thickness, using the electrostatic theory and based on the electric double layer theory, is attractive, but this is lacking in the literature. Herein, we fill the knowledge gap by using the interfacial electrostatic theory based on the fundamental tenets of the solution to the Poisson–Boltzmann mean field theory. Accordingly, we have used an existing model of capillary rise based on free energy concepts to derive a capillary rise equation that can be used to theoretically predict observations based on the TZ thickness of different reservoir rocks, using well-established formation evaluation methods. The novelty of our work stems from the ability of the model to theoretically and accurately predict the TZ thickness of the different lithostratigraphic units of hydrocarbon reservoirs, because of the experimental accessibility of its model parameters.

Exploring the dynamics of collisionless spherical stellar systems using the matrix method: Insights from the dilation mode

Context. Analytical solutions to the perturbed equations that govern self-gravitating collisionless stellar systems are crucial for both code testing and theoretical insights. For spheres, a solution has been known for years that corresponds to the entire object’s shift from the origin. We recently introduced a new exact stationary solution, relevant for models with a single length parameter. This solution, referred to as the scale-invariant or dilation mode, has led to insights regarding the concept of perturbation energy within the linear theory framework. Aims. Our aim is to use Hénon’s isochrone model as an example to verify the ability of the standard matrix method to successfully predict the existence of a dilation mode, and to explore its potential application as a test disturbance. Methods. We used the standard matrix method for radial perturbations and applied Clutton-Brock potential-density pairs to determine the properties of the perturbations. Results. In this particular case of stationary radial perturbations, the typical relationship between the perturbations of the distribution function and the potential fails. This discrepancy poses a challenge when attempting to use the dilation mode as a test. When using Clutton-Brock pairs with the matrix method, a mass conservation equation as an additional equation to the ordinary set of linear equations is required. With this added equation, it’s possible to obtain the needed test: identical vanishing of the determinant of this modified set of equations with an increasing number of included basis functions.

The Energy Field Approach

Energy is an important crosscutting concept across middle and high school grades. However, studies show that students struggle understanding this concept. To address this problem, we started a design-based research project called “the energy field approach” (EFA). This project develops a teaching learning sequence (TLS) for high schools (grades 10-12). The design follows the model of educational reconstruction and builds on a clarification of the scientific content as well as on knowledge about students’ conceptions and misconceptions on the relevant topic. The result is a teaching concept and TLS that can be used by teachers for energy instruction. As a key feature, it traces traditional energy forms back to only kinetic energy and field energy. This simplifies the surface structure of the energy concept and makes sense of the meaning of energy forms like for instance chemical energy that have been “blackboxes” in traditional energy instruction before. This makes students more likely to draw back on energy ideas when reasoning about phenomena. The TLS is cyclically evaluated and re-designed by conduct and qualitative analysis of teaching experiments according to the method of probing acceptance. Results show that the concept and TLS are helpful for students to combine ideas about energy and fields and analyze processes from an energy perspective. The concept is found to be useful for a “deeper understanding” in the students’ perception. Further studies still have to be conducted to investigate the effects in a bigger setting and on further learning.

A Distributionally Robust Optimization Approach for Local Electrical Market Interaction With Wholesale Electrical Market and Prosumers Within the Framework of Transactive Energy Concepts

A Distributionally Robust Optimization Approach for Local Electrical Market Interaction With Wholesale Electrical Market and Prosumers Within the Framework of Transactive Energy Concepts

The evolution of physics: from the action of forces to the power of action

At the beginning of the study of physical phenomena, the idea of "force" was widely used to explain the non-stationarity of observed phenomena, such as the movement of bodies. However, as mechanics and physical theories developed, the force notions gained own formal definitions and names, without the use of the term "force". So, the concept of kinetic energy arose instead of "vis viva", and "current" instead of "current strength" ets. Additionally, a number of new physical theories have been formulated without the use of force concept. As a result, different types of forces have gradually been replaced by other more important concepts, such as energy and action, which are closely linked to fundamental physical principles. It is interesting to note that the general trend in the development of civilizations has been a shift from unrestricted power (expressed in the thesis "might makes right") to its subordination and incorporation into a legal framework. This is similar to the evolution of physics, which has seen the notion of force become eliminated or subordinated to more general principles and laws.

Study on numerical simulation and mechanical properties of anchor cable with C-shaped tube subjected to shearing

To examine the disparity in deformation behavior and mechanical qualities between anchor cables with C-shaped tubes and regular anchor cables under shear conditions. The double-sided shear tests of free-section anchor cables and anchor cables with C-shaped tubes were conducted utilizing the indoor large-scale double-shear test equipment with varying pretension loads. The indoor double-shear tests indicate that the inclusion of the C-shaped tube alters the stress distribution of the anchor cables inside the anchor cables with C-shaped tubes and mitigates the impact of stress concentration. Moreover, it facilitates the transition of the anchor cable's failure mode from a mix of tensile and shear breaking to mainly tensile breakage. In addition, ABAQUS finite element analysis software was used to establish a double shear test model of the anchor cable with C-shaped tube to accurately simulate the interaction and stress distribution among the anchor cable, C-shaped tube, and concrete block in the double shear test. The findings of the simulation results reveal that the numerical model can adequately depict the evolution of the stress distribution in the prestressed anchored structure and the damage of the concrete block with increasing shear displacement. The relational equation for the yield state of the anchor cable with C-shaped tube under combined tensile and shear loads is found by integrating the experimental and simulation data, the static beam theory, and the concept of minimal potential energy.

Weak solutions to the heat conducting compressible self-gravitating flows in time-dependent domains

In this paper, we consider the heat-conducting compressible self-gravitating fluids in time-dependent domains, which typically describe the motion of viscous gaseous stars. The flow is governed by the 3D Navier–Stokes–Fourier–Poisson equations where the velocity is supposed to fulfill the full-slip boundary condition and the temperature on the boundary is given by a non-homogeneous Dirichlet condition. We establish the global-in-time weak solution to the system. Our approach is based on the penalization of the boundary behavior, viscosity, and the pressure in the weak formulation. Moreover, to accommodate the non-homogeneous boundary heat flux, the concept of ballistic energy is utilized in this work.

Mutual role of dodecylbenzene sulfonic acid on enhanced oil recovery and asphaltene inhibition in low salinity medium: Experimental and XDLVO study

Understanding the molecular interactions during oil recovery processes can shed light on screening new chemicals for future operations. Of particular interest are chemicals capable of providing the mutual role of asphaltene inhibition and interfacial tension reduction at liquid–liquid and rock-liquid interfaces. This study delves into the interfacial interactions between low-salinity brines, model oils containing dodecylbenzene sulfonic acid, and dolomite rock surfaces. In the experimental part, the asphaltene precipitation inhibition efficacy of dodecylbenzene sulfonic acid was evaluated through filtration and precipitation test, and its oil recovery performance was examined from interfacial tension reduction and wettability alteration viewpoints. The theoretical part was then followed by the implementation of the surface energy concept based on the XDLVO theory, where acid-base and Lifshitz-van der Waals interaction energies, as well as the work of cohesion/adhesion between interacting bodies in asphaltene and oil recovery systems, were considered. The results obtained from this study revealed that dodecylbenzene sulfonic acid, owing to its acidic nature and the long alkyl chain in its structure, could simultaneously perform the role of asphaltene inhibitor and oil recovery agents. In particular, asphaltene particles showed less tendency to aggregate and form macrostructures in the presence of low-salinity brines formulated with magnesium chloride. The total interaction energy between asphaltene particles was almost halved by the addition of dodecylbenzene sulfonic acid. The low interfacial tension of 0.16 mN/m between model oil containing 1 wt% of DBSA and low-salinity brine containing 5000 mg/L magnesium chloride and the wettability alteration of the dolomite sample toward water-wetness were also confirmed by theoretical calculations using the concept of work of adhesion.