scholarly journals INTERNAL AND EXTERNAL FLUCTUATION ACTIVATED NONEQUILIBRIUM REACTIVE RATE PROCESS

2013 ◽  
Vol 27 (10) ◽  
pp. 1350072 ◽  
Author(s):  
CHUN-YANG WANG

An externally activated nonequilibrium anomalous reactive rate process is studied by taking into account both internal and external fluctuations in a unified way. The probability of diffusion passing over the saddle point and the reactive rate together with the effective transmission coefficient are calculated by the method of reactive flux. It is found that the fierceness of internal fluctuation is always harmful to the diffusion of particles. However, the external activation may be beneficial to the rate process.

2015 ◽  
Vol 29 (04) ◽  
pp. 1550012
Author(s):  
Chun-Yang Wang

The time-dependent barrier passage of an activated rate process is studied where the heat bath in the system-reservoir coupling environment is modulated by an external fluctuation. For a thorough inspection on the barrier recrossing dynamics, the Kramers rate and effective transmission coefficient are calculated of the reactive flux method. In the particular case of a δ-correlated noise activated Ornstein–Uhlenbeck process, it is found that, the external modulation can in some cases result in an maximum effective transmission coefficient. This reveals a maximum net flux and can be obtained from the minimum barrier recrossing resulted from appropriate external modulation.


2019 ◽  
Vol 2 (4) ◽  
pp. 90-96
Author(s):  
Halliru Shuaibu ◽  
Siti Hajar Mohd Amin ◽  
Sarimah Ismail ◽  
Yusri Kamin

The aims of Vocational Colleges (VCs) are to give training and impart necessary skills leading to the production of craftsmen who will be enterprising and self-reliant. Many developing countries face the problem of unemployment among graduates; this may not be far from curricula modules mismatching job requirements. The scenario of low participation of private sector in skills development of graduates exists in Nigeria as a result of which the needs of local industries is not met. The objective of this paper is to compare the curriculum framework, courses/subjects-matter, aims, modes of transaction, and evaluation strategies in VCs in Malaysia and Nigeria. The methodology used in this study involved gathering previous studies on comparative analysis in education through Google Scholar, Science Direct, and JSTOR. Related Procedia were also retrieved from Elsevier. Literatures show that students have to adapt with 21st century knowledge, skills, innovative practice and competence as key points to job creation and wealth generation. The findings of this paper show that the curriculum structures in VCs in Malaysia are more updated than in Nigeria. However, curricula in VCs in Malaysia and Nigeria still need some improvements in entrepreneurship skills. This is necessary for effective transmission of knowledge and skills from school to work environment in the 21st century.


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