Gravitational collapse of compact stars in f(R) = ξR4 gravity

In this paper, model of gravitational collapse of anisotropic compact stars in a new theory of [Formula: see text] gravity has been developed. The author considers the modified gravity model of [Formula: see text] to investigate a physically acceptable model of gravitational collapse of anisotropic compact stars. First, the author presents a brief review of the development of field equations of gravitational collapse in [Formula: see text] gravity for a particular interior metric for compact stars. Then analytical solutions for various physical quantities of collapsing anisotropic compact stars in [Formula: see text] gravity have been developed. By analyzing plots of various physical parameters and conditions, it is shown that the model is physically acceptable for describing the gravitational collapse of anisotropic compact stars in [Formula: see text] gravity.

From Data to Wisdom: A Case Study of OPOP Model

The purpose of this research is to: (1) clarify the scope and connotation of the OPOP (One Product/Project/Performance, One Paper) model comprehensively; (2) show its application in design and creative teaching; (3) introduce this model to more people. First, the author reviews the design doctoral education system and its shortcomings and analyzes the similarities and differences between “Ph.D. of Design” and “Master of Design”; second, the researcher discusses the DIKW (Data, Information, Knowledge, Wisdom) pyramid, cognition and communication theory separately. The author also interviewed the two teachers who created the OPOP model to clarify its core meaning and goals. Finally, the author invited students who participated in an OPOP forum to fill out a questionnaire in order to analyze and understand their responses and suggestions. The OPOP model allows participants to realize that “creativity” and “interpretation” are equally important and to gradually learn to use academic papers to transform personal “tips” and “experience” into “knowledge” that can be imparted. The author hopes that the OPOP model and the general frameworks mentioned in this study can inspire all readers, enabling them to continuously explore the connotation and further possibilities of OPOP in light of the actual situation.

EXPERIENTIAL LEARNING: AN ANALYSIS OF IMPACT ON ACADEMIC ACHIEVEMENT AMONG STUDENTS OF GRADE 12

The molecular model as a learning tool in class-room instructions is significant due to its positive effect on the learning and teaching process. Many students struggle to learn Chemistry and do not succeed. Chemistry is the central part of all Science subjects. To make Chemistry learning easy and joyful appropriate method of class-room instructions are important. The Chemistry of solid states and composite materials is the part of the curriculum at All India Senior Secondary School Curriculum. Students face problems in solid state Chemistry due to its abstract concepts. To address the issue, handmade models and paper-based models are made as evidence-based learning. In this present paper attempt is made to investigate the impact of handmade paper model of unit cell and crystal lattices of solid-state Chemistry on academic achievement. The study is delimited to the students of only one school in rural area. Totally 50 students participate in the study. Sample is distributed into two groups: study group and the control group, by connecting them on the basis of the previous knowledge which is determined through pre-test. The students of the study group are taught solid states Chemistry through handmade paper models of unit cells and crystal lattices and the students of the control group are taught by using traditional chalk and board method. Data is collected by using Test (Pre and Post). Mean standard deviation and mean differences are used as a statistical tool to analyze the data. Substantial difference between the study group and the control group of mean score on test (pre and post and retention) are tested at 0.05 level. The handmade paper model of unit cell and crystal lattices of solid states Chemistry has significant positive impact on the academic achievement in solid state Chemistry. Based on the findings of the present study, some recommendations are made for using paper model as teaching aid for evidence-based learning in Chemistry and other core subjects to move up the students’ academic performance level.

3D Shape Prediction of a Paper Model for a Brassiere Cup Consisting of Multiple Polygonal Patterns

A general method is proposed to predict the shape of a paper model of a brassiere cup. A brassiere cup consists of several cloth and wire parts and the shapes of cloth parts are determined by repeating creation of a paper cup model, check of its 3D shape, and modification of 2D shapes of parts. For efficient design of a brassiere cup, prediction of its 3D shape with a simulation is required. The deformed shape of a paper part is represented as a single or multiple developable surfaces. So, a model that can represent a part both as a single surface and as multiple surfaces is proposed. Which case is selected depends on the magnitude of the potential energy of the part in each case. The potential energy of the part and geometric constraints imposed on the part are formulated based on the model. Minimizing the potential energy under geometric constraints derives the stable shape of the part in either case. Furthermore, our proposed method can be applied to prediction of the paper cup model consisting of parts with complex shapes.

Transient Temperature Distribution and Thermo-Mechanical Coupling Response of Paper in the Fusing Process of Laser Printers

The hot-press fusing process of a laser printer is one of the principal causes for paper folding and bending deformation. In order to predict and control the deformation of paper, first, the following analysis method is proposed for the transient temperature field analysis of the continuous moving paper: discretizing the thermal analysis process, replacing the moving paper model with the moving heat source, and simulating the movement speed of paper by setting the flow boundary conditions. Second, taking the steady-state thermal calculation results of the printer in the standby mode as initial conditions, the temperature distribution characteristics of paper during the movement are obtained with the paper model placed in a whole-machine environment to analyze the transient temperature field. Third, using the method of multi-field coupling, the transient temperature field results of paper are taken as the external load of its static analysis to analyze the deformation of paper during the fusing process; therefore, the quantitative deformation results and deformation characteristics of paper after fusing are obtained. According to the results, more precise boundary conditions can be achieved by calculating the temperature field of paper in a whole-machine environment. The method of transient temperature field analysis for continuous moving objects proposed in this study can effectively simulate the movement process of paper. The results reveal the mechanism of paper wrinkle and bending deformation in the fusing process, which can be used to predict the conveying performance of paper and guide the design work of the printer.

Military Based Automated Guided Vehicle System

The interest of this research is to provide a solution to the use of Unmanned Ground Vehicles in military applications. This paper model such an Automated Guided Vehicle (AGV) that can not only be used as load carriers but also as transportation and surveillance vehicles with an ability to communicate, too. From border surveillance to carrying arms & ammunitions for the camps, there are a lot many applications of this AGV. Furthermore, changing the intelligence of the system to fully automated possible applications are explored in this paper. With this intelligence system, vehicles can provide constant updates about its surroundings, and the data shared with peer vehicles will include information on potential and sudden obstacles on the route. Communication of an Unmanned Aerial Vehicle or any other AGV can be achieved. The study concludes that the objective of an autonomous vehicle system in military and other applications can be achieved by this model.

SUPPORTING THE MODELLING IN MBSE BY APPLYING PRODUCT GENERATION ENGINEERING USING ELECTRONIC COMPACT ACTUATORS AS AN EXAMPLE

The development of a new motor can be a high effort. In this paper, Model-based Systems Engineering (MBSE) is applied to model the second generation of an electronic compact actuator (ECA). This paper focuses on the traceability between model elements from previous product generations. By integrating the approach of the PGE - Product Generation Engineering in MBSE, developers can store more relevant information in the model; they can accomplish automatic calculations of derived factors and build models more efficiently in further product developments.