441 research outputs found
The development of university-level distance education in the context of Hong Kong's transition from a British colony to a special administrative region of China
China resumed sovereignty over Hong Kong on I July, 1997. After being a British
colony for more than 150 years, Hong Kong became a Special Administrative Region
of China following the "one country, two systems" policy. This dissertation is
concerned with the examination of the market changes in Hong Kong's university
distance education in the transition period.
Information about respondents' demographics, evaluation and intention to pursue
further study through distance education programmes was collected by sending
questionnaires to two types of subject: current students using distance education
programmes and potential adult students in Hong Kong. A total of five groups were
identified as representing the first type of subject: students of the Henley Management
College/Brunel University (UK) - MBA programme, the Curtin University of
Technology - Bachelor of Commerce and Master of Accounting programme
(Australia), and the Open University of Hong Kong - Bachelor of Business
Administration and MBA programmes. The second type of subject comprised Hong
Kong adults who were interested in studying via distance education programmes. One
group of subjects were visitors to the Hong Kong Education Expo 1996, and they
were classified as potential students who wished to study in distance education
programmes in Hong Kong.
All the data were processed using the Statistical Package for Social Science software
programme. The research questions were tackled by the resultant data and analysis.
The important findings obtained from the subjects are:
a) The need for higher-degree-level programmes is very great among Hong Kong's
distance learners. The decision to undertake further study to distance Master
degree level after completing a distance Bachelor degree aptly demonstrates this
situation. Consideration should, therefore, be given to developing distance Master
degree programmes for students currently studying distance Bachelor degree
programmes, and distance Doctorate degree programmes for students currently
studying distance Master degree programmes. The majority of distance students,
particularly at the higher-degree-level, tend to be in the higher-income bracket.
b) Hong Kong adults who are interested in distance education programmes come
from different occupation segments. Their choice of further study varies according
to their needs and occupations. Consideration should be given to repositioning the
current distance education programmes, particularly at Bachelor's degree or
Diploma level. In addition, a segment comprising housewives has been identified
as potential students for Bachelor's degree programmes by this study.
In the further discussion about Hong Kong during the transition period, Fägerlind and
Saha's Dialectical Model is used to examine the development of Hong Kong's higher
education system with three important dimensions: political, economic and social
forces. Finally, this analysis provides three possible alternatives of development for
the integration of Hong Kong's and China's higher education systems in the post-transition
period: "One Country, One System", "One Country, Two Systems", and
"One Country, Many Systems"
Generalized multiscale finite element methods for wave propagation in heterogeneous media
Numerical modeling of wave propagation in heterogeneous media is important in
many applications. Due to the complex nature, direct numerical simulations on
the fine grid are prohibitively expensive. It is therefore important to develop
efficient and accurate methods that allow the use of coarse grids. In this
paper, we present a multiscale finite element method for wave propagation on a
coarse grid. The proposed method is based on the Generalized Multiscale Finite
Element Method (GMsFEM). To construct multiscale basis functions, we start with
two snapshot spaces in each coarse-grid block where one represents the degrees
of freedom on the boundary and the other represents the degrees of freedom in
the interior. We use local spectral problems to identify important modes in
each snapshot space. These local spectral problems are different from each
other and their formulations are based on the analysis. To our best knowledge,
this is the first time where multiple snapshot spaces and multiple spectral
problems are used and necessary for efficient computations. Using the dominant
modes from local spectral problems, multiscale basis functions are constructed
to represent the solution space locally within each coarse block. These
multiscale basis functions are coupled via the symmetric interior penalty
discontinuous Galerkin method which provides a block diagonal mass matrix, and,
consequently, results in fast computations in an explicit time discretiza-
tion. Our methods' stability and spectral convergence are rigorously analyzed.
Numerical examples are presented to show our methods' performance. We also test
oversampling strategies. In particular, we discuss how the modes from different
snapshot spaces can affect the proposed methods' accuracy
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