The two-dimensional coupled map lattice model has been extensively employed as the basis component for designing various schemes in the cryptography system due to its complicated chaotic dynamic behavior. In this study, we analyze the chaotic characteristics of the 2D CML model, such as the Lyapunov exponent, synchronization stability, bifurcation, and ergodicity. We then show that the chaotic sequences generated by the 2D CML model are random according to the NIST testing. Furthermore, we propose an image encryption scheme based on (...) the 2D CML model and Singular Value Decomposition. In our scheme, the SVD method is used to reduce the image storage, and the Red, Green, and Blue channels of a color image will be encrypted through confusion and diffusion. The simulation results, as well as the results of the comparison with other schemes, demonstrate that our scheme possesses outstanding statistics, excellent encryption performance, and high security. It has great potential for ensuring the security of digital images in real applications. (shrink)

IntroductionTranscranial direct current stimulation is a noninvasive brain stimulation technique that applied to modulate brain activity and enhance motor recovery. However, the neurobiological substrates underlying the effects of tDCS on brain function remain poorly understood. This study aimed to investigate the central mechanisms of tDCS on improving the athletic performance of male rowing athletes.MethodsTwelve right-handed male professional rowing athletes received tDCS over the left primary motor cortex while undergoing regular training. The resting-state functional magnetic resonance imaging data were acquired before (...) and after tDCS. Measures of amplitude of low-frequency fluctuation and regional homogeneity were calculated and compared between baseline and follow-up, as well as topological measures including global and local efficiency of functional brain networks constructed by graph theoretical analysis.ResultsMale rowing athletes showed increased isokinetic muscle strength of the left knee and left shoulder after tDCS. Increased ALFF values were found in the right precentral gyrus of male rowing athletes after tDCS when compared with those before tDCS. In addition, male rowing athletes showed increased ReHo values in the left paracentral lobule following tDCS. Moreover, increased nodal global efficiency was identified in the left inferior frontal gyrus of male rowing athletes after tDCS.ConclusionThe findings suggested that simultaneous tDCS-induced excitation over the primary motor cortex might potentially improve the overall athletic performance in male rowing athletes through the right precentral gyrus and left paracentral lobule, as well as left inferior frontal gyrus. (shrink)

Comprehensive and authoritative, this _Handbook_ provides a nuanced description and analysis of educational systems, practices, and policies in Asian countries and explains and interprets these practices from cultural, social, historical, and economic perspectives. Using a culture-based framework, the volume is organized in five sections, each devoted to educational practices in one civilization in Asia: Sinic, Japanese, Islamic, Buddhist, and Hindu. Culture and culture identities essentially are civilization identities; the major differences among civilizations are rooted in their different cultures. This framework (...) offers a novel approach to capturing the essence of the diverse educational systems and practices in Asia. Uniquely combining description and interpretation of educational practices in Asia, this _Handbook_ is a must-have resource for education researchers and graduate students in international and comparative education, globalization and education, multicultural education, sociocultural foundations of education, and Asian studies, and for educational administrators and education policy makers. (shrink)

本书概括了发展社会主义市场经济条件下军人道德品质的主要特点;提出了发展社会主义市场经济条件下军人道德品质培养的主要矛盾是军人道德品质现有水平和培养目标之间的矛盾;揭示了发展社会主义市场经济条件下军人道 德品质培养的基本规律。在以上研究成果的基础上,本文提出了发展社会主义市场经济条件下军人道德品质培养的基本思路和对策。.