The influence of the brainstorming process on the creativity of vocational industrial education students in Taiwan the ROC

The purpose of this study was to determine the effectiveness of brainstorming to enhance creativity of vocational industrial education students, and to determine the enhancement effects of creative thinking abilities on different subjects in different technical areas;To accomplish the purpose, 173 students in two classes of the electronic and the machinery departments in Ta-an Senior Vocational Industrial School were involved in this study as subjects. The quasi-experimental design included non-equivalent control groups. Teaching time was five hours in each of the four classes. Experimental groups were taught employing the brainstorming process, while the control group was provided traditional instruction in the introduction of American culture, customs, and national parks. The verbal and figural forms of Torrance Test of Creative Thinking were used to pre-test and post-test all students;After the collection of data, a two-way analysis of covariance (ANCOVA) was used. Before analysis of covariance, a test for homogeneity of regression was conducted to check if it violated the assumption of homogeneity of regression in ANCOVA. If the assumption was violated, the data were analyzed with the analysis of variance for difference between t scores of the pre-test and the post-test;Some conclusions for this research are presented. After participating in the brainstorming session: (1) The experimental group students made significantly greater gains in fluency, flexibility, originality, and total of verbal creative thinking abilities than the control group students. (2) The experimental group students made significantly greater gains in fluency, originality, and total score of figural creative thinking abilities than the control group students, but not in flexibility. The enhancement of figural-elaboration scores for the experimental group occurred for the machinery department students, but not for the electronic department students. (3) There were no significant differences in the enhancement of the scores of fluency, flexibility, originality, and total score in verbal creative thinking abilities between the machinery and the electronic students. (4) There were no significant differences on the enhancement of the scores of fluency, flexibility, originality and total in figural creative thinking abilities between the machinery and the electronic students, while the effects of experimental teaching on the machinery department was better than that of the electronic department on the figural-elaboration scores

Dynamic instability and ultimate capacity of inelastic systems parametrically excited by earthquakes

A procedure of analysis is presented for determining the dynamic instability and response of framed structures subjected to pulsating axial loads, time-dependent lateral forces, or foundation movements. Included in the analytical work are the instability criterion of a structural system, the finite element technique of structural matrix formulation, and the computer solution methods. The dynamic instability is defined by a region in relation to transverse natural frequency, longitudinal forcing frequency and the magnitude of axial dynamic force. The axial pulsating load is expressed in terms of static buckling load for ensuring that the applied load is not greater than the buckling capacity of a structural system. Consequently, the natural frequency and static instability analyses are also included. For static instability analysis, both the concentrated and uniformly distributed axial loads are investigated. The displacement method is used in this research for structural matrix formulation for which the elementary matrices of mass, stiffness, and stability are developed using the Lagrangian equation and the system matrices are formulated using the equilibrium and compatibility conditions of the constituent members of a system. Two numerical integration techniques of the fourth order Runge-Kutta method and the linear acceleration method are employed for the elastic and elasto-plastic response of continuous beams, shear buildings, and frameworks. The general considerations are the bending deformation, p-Δ effect, and the effect of girder shears on columns. For the elasto-plastic analysis, the effect of axial load on plastic moment is also included. A number of selected examples are presented and the results are illustrated on a series of charts, tables, and figures from which the significant effect of pulsating load on the amplitude of transverse vibration is observed. The work may be considered significant in the sense that the response behavior of parametric vibrations has been throughly [sic] studied and the computer programs developed can be used for various types of frameworks --Abstract, pages ii-iii

A Study in Multimedia Design Applied to Film Editing to Construct a Multiple Plots Movie

Narrative has lead filmmaking since the first filmwas made until now. Digital technologies have becomeincreasingly involved in filmmaking but without changing thesingle plot storytelling model of a filmmaking. The study proposedan intercut design using Multimedia technology to film editingproviding multiple and variety plots in one film. The audiencescan experience different plot to the film in every watch. Thedesign concept and process are provided. Future development andrecommendation are listed for widen the research area

Application of Cryogenic Treatment to Extend the Life of the TiAlN-Coated Tungsten Carbide Milling Cutter

Cutting tools are important to the manufacturing industry since they will affect production efficiency and product quality. Cryogenic treatment can improve the material properties by decreasing residual stress, stabilizing dimensional accuracy, and increasing wear resistance. The purpose of this study is to investigate the feasibility and effect of cryogenic treatment on the performance of TiAlN-coated tungsten carbide milling cutters for machining the Inconel alloy 625 in terms of different testing methods (e.g., hardness, wear resistance, residual stress, microstructure, and tool life test). Experimental results indicate that after cryogenic treatment there is less wear, the microstructure is denser, residual stress is decreased, the adhesion of coating and tungsten carbide is improved, and the tool life is effectively improved

Generalized Synchronization with Uncertain Parameters of Nonlinear Dynamic System via Adaptive Control

An adaptive control scheme is developed to study the generalized adaptive chaos synchronization with uncertain chaotic parameters behavior between two identical chaotic dynamic systems. This generalized adaptive chaos synchronization controller is designed based on Lyapunov stability theory and an analytic expression of the adaptive controller with its update laws of uncertain chaotic parameters is shown. The generalized adaptive synchronization with uncertain parameters between two identical new Lorenz-Stenflo systems is taken as three examples to show the effectiveness of the proposed method. The numerical simulations are shown to verify the results

Bending stress in gear teeth for variable surface pressure distribution

AbstractThe bending stress in the root fillets of gear teeth having convex, circular-arc profiles has been calculated using a new analytic model for variable surface pressure distribution. The gear tooth is modeled as a wedge with the load applied at the apex. Graphs of the nondimensional bending stress variation along the tooth length are presented for 14.5 °, 22.5 °, and 30 ° normal pressure angle; 5 °, 25 °, and 45 ° helix angle, and 16, 32, and 80 normal diametral pitch. Tables of the nondimensional maximum root-fillet stress variation are presented for the variation of normal pressure angle, helix angle, and normal diametral pitch. It is shown that gears with larger helix angles or normal diametral pitches or lower normal pressure angles have higher bending stresses for the same value of allowalble surface stress

Equitable colorings of Kronecker products of graphs

AbstractFor a positive integer k, a graph G is equitably k-colorable if there is a mapping f:V(G)→{1,2,…,k} such that f(x)≠f(y) whenever xy∈E(G) and ||f−1(i)|−|f−1(j)||≤1 for 1≤i<j≤k. The equitable chromatic number of a graph G, denoted by χ=(G), is the minimum k such that G is equitably k-colorable. The equitable chromatic threshold of a graph G, denoted by χ=∗(G), is the minimum t such that G is equitably k-colorable for k≥t. The current paper studies equitable chromatic numbers of Kronecker products of graphs. In particular, we give exact values or upper bounds on χ=(G×H) and χ=∗(G×H) when G and H are complete graphs, bipartite graphs, paths or cycles

Nonlinear Dynamic Analysis and Synchronization of Four-Dimensional Lorenz-Stenflo System and Its Circuit Experimental Implementation

Recently many chaotic systems’ circuits are designed to generate phenomenon of chaos signals. The ability to synchronize chaotic circuits opens a great number of ways to use them in application signals masking. In this paper, first a new nonlinear chaotic dynamical system had be design, analyze and build circuit. Second, using GYC, partial region stability theory is applied to adaptive control for two identical chaotic systems with uncertain parameters. The results of numerical simulation are performed to verify examples of the proposed nonlinear controllers