Instructional leadership practices in Singapore

This paper presents a review of the literature on principal instructional leadership in Singapore. The authors investigated the dimensions of instructional leadership in the practices of Singapore principals and highlighted the strategies these leaders adopt to enact their instructional roles. Singapore principals were found to play an active role in defining the school vision and promoting the school climate. However, in the areas of curriculum implementation and classroom instruction, the middle management team in the school played more active roles as compared to principals. Five broad conclusions were discussed to provide perspectives on instructional leadership practices in Singapore. This paper also highlighted limitations on current instructional leadership research in Singapore and pointed to areas of future research.     

“It wouldn't be the same without nature”—The value of nature according to Finnish upper secondary school students

This article describes an interview study on Finnish upper secondary school students' values of nature. Even if the Finnish adolescents' interest in nature has decreased, most of the interviewees in this study regarded nature as worthy of maintenance. They valued nature for its material, aesthetic, and recreational values, as well as its diversity and future value, and because of their holistic view of nature. The nature values of the students were complex. Therefore, we suggest education that supports their value development through deliberation, authentic involvement, and outdoor activities.     

The operation of grade retention and educational inequality: who gets retained in Macao and why?

While the existence of a class, gender, or ethnic gap in educational attainment is well documented for many societies, how the practice of grade retention contributes to these patterns of educational inequality has been inadequately addressed. Given that grade retention is commonly practised in Macao, Macao is used as a case for illustration. Using data from PISA 2009 and a qualitative research project, we seek to demonstrate how inadequate state regulation could make possible the manipulation of grade retention institutionally and individually in Macao. This, in turn, illustrates how the specific contextualized structural operation of grade retention could serve as a mechanism for social differentiation and thus play a role in contributing to the observed educational inequality.     

Relationships between reading comprehension and its components in young Chinese-as-a-second-language learners

Based on the Simple View of Reading model, this study examines the relationships among Chinese reading comprehension and its two componential processes, Chinese character reading and listening comprehension, in young learners of Chinese as a second language (CSL) using a longitudinal design. Using relevant measures, a sample of 142 senior primary ethnic minority students in Hong Kong was assessed twice a year. The results of regression analyses showed that character reading and listening comprehension could together account for a significant portion of the variance in reading comprehension at grades 4 and 5 both concurrently and predictively. Subsequently, a trivariate, cross-lagged path model was specified to evaluate the relationships among these variables after controlling for their autoregressive effects. The study identifies statistically significant and unique contributions of character reading and listening comprehension to reading comprehension; further, it finds reciprocal relationships between reading comprehension and its componential processes. Moreover, the two componential processes themselves are significantly related across grades 4 and 5. Apart from supporting the predictive influence of character reading and listening comprehension on reading comprehension, the findings of this study reveal how Chinese language comprehension and literacy development are interrelated in young CSL learners.     

Patterns of participation in year 9 academic testing and factors predicting absence on the day of test

Policies aiming to improve educational outcomes are typically based on academic testing data. However, such data only reflect the performance of students who completed the tests. It is possible that students who were absent have shared characteristics. The proportion of students absent out of all eligible school students and whether they have shared characteristics has not been investigated, as this is only possible through the use of linked administrative data. Participants were born in Western Australia in 1994 and 1995, and their birth records were linked to participation status in the Year 9 academic tests to determine the proportion of students who were absent. Logistic regression was conducted to investigate characteristics which predicted absence on test day. A proportion of non-Aboriginal (3.2 %) and Aboriginal students (21.9 %) were absent on test day. Risk factors which predicted the absence included contact with Child Protection and Family Services, history of maternal mental health problems, and fathers aged below 20 years at the time of their child’s birth. A significant proportion of students was absent and therefore not represented in academic achievement information. These students were more likely to have experienced adverse events and therefore are not randomly absent. As these data are typically used to inform policies which aim to improve educational outcomes, they may lack the necessary information to adequately address the complex needs of students who are absent on test day. However, findings suggest that service providers, as well as schools may play an important role in encouraging participation in school.     

Application of a transversal laguerre network in adaptive equalization

Synchronous data transmission systems that transmit information over dispersive channels often employ adaptive equalization techniques in the processing of the received signals. Most equalizers presently used in communication systems are of the tapped delay line (TDL) type. In this paper, we propose a class of adaptive equalizers of which the TDL equalizer is a member. Another interesting member of this class is the Laguerre adaptive equalizer which is to be introduced in this paper. The configuration of the Laguerre equalizer is developed. It is found, as shown by the examples, that the Laguerre equalizer is more accurate, and is less sensitive to timing error than the conventional TDL equalizer.     

Selectivity nomographs for classical filters

Nomographs for determining the filter order of classical filters based on selectivity requirements are presented. The selectivities for a variety of standard classical filters are summarized in equation form and the general selectivity nomograph is constructed. The selectivity equations are then converted into nomograph form by applying the relationship between the transfer function and the response slope. Design examples are presented to demonstrate the usefulness of the selectivity nomographs. These nomographs can be used to gauge filter performance and combined with optimization techniques can yield superior classical filter designs.     

Development cooperation as methodology for teaching social responsibility to engineers

The role of engineering in promoting global well-being has become accentuated, turning the engineering curriculum into a means of dividing well-being equally. The gradual fortifying calls for humanitarian engineering have resulted in the incorporation of social responsibility themes in the university curriculum. Cooperation, communication, teamwork, intercultural cooperation, sustainability, social and global responsibility represent the socio-cultural dimensions that are becoming increasingly important as globalisation intensifies the demands for socially and globally adept engineering communities. This article describes an experiment, the Development Cooperation Project, which was conducted at Aalto University in Finland to integrate social responsibility themes into higher engineering education.