title: Improving the Quality of Real Time Media Applications through Sending the Best Packet Next

authors: McDonald, Ian

abstract: Real time media applications such as video conferencing are increasing in usage. These bandwidth intensive applications put high demands on a network and often the quality experienced by the user is sub-optimal.

In a traditional network stack, data from an application is transmitted in the order that it is received. This thesis proposes a scheme called "Send the Best Packet Next (SBPN)" where the most important data is transmitted first and data that will not reach the receiver before an expiry time is not transmitted. In SBPN the packet priority and expiry time are added to a packet and used in conjunction with the Round Trip Time (RTT) to determine whether packets are sent, and in which order that they are sent. For example, it has been shown that audio is more important to users than video in video conferencing. SBPN could be considered to be Quality of Service (QoS) that is within an application data stream. This is in comparison to network routers that provide QoS to whole streams such as Voice over IP (VoIP), but do not differentiate between data items within the stream or which data gets transmitted by the end nodes. Implementation of SBPN can be done on the server only, so that much of the benefit for one way transmission (e.g. live television) can be gained without requiring existing clients to be changed.

SBPN was implemented in a Linux kernel on top of Datagram Congestion Control Protocol (DCCP) and compared to existing solutions. This showed real improvement in the measured quality of audio with a maximum improvement of 15% in selected test scenarios.

text: Improving the Quality of Real Time Media Applications through Sending the Best Packet Next Real time media applications such as video conferencing are increasing in usage. These bandwidth intensive applications put high demands on a network and often the quality experienced by the user is sub-optimal.

In a traditional network stack, data from an application is transmitted in the order that it is received. This thesis proposes a scheme called "Send the Best Packet Next (SBPN)" where the most important data is transmitted first and data that will not reach the receiver before an expiry time is not transmitted. In SBPN the packet priority and expiry time are added to a packet and used in conjunction with the Round Trip Time (RTT) to determine whether packets are sent, and in which order that they are sent. For example, it has been shown that audio is more important to users than video in video conferencing. SBPN could be considered to be Quality of Service (QoS) that is within an application data stream. This is in comparison to network routers that provide QoS to whole streams such as Voice over IP (VoIP), but do not differentiate between data items within the stream or which data gets transmitted by the end nodes. Implementation of SBPN can be done on the server only, so that much of the benefit for one way transmission (e.g. live television) can be gained without requiring existing clients to be changed.

SBPN was implemented in a Linux kernel on top of Datagram Congestion Control Protocol (DCCP) and compared to existing solutions. This showed real improvement in the measured quality of audio with a maximum improvement of 15% in selected test scenarios.

year: 2013

title: The Role of Children's Literature in the Teaching of English to Young Learners in Taiwan

authors: Yu Chang, Jui-Fang

subjects: role of children's literature

abstract: Teachers of young learners of English in Taiwan are often encouraged to use children's literature in their teaching. My overall aims in this research project were to find out:

 	whether there is any agreement about the meaning of the term 'children's literature', particularly among those who recommend its use in the teaching of English to young learners in Taiwan;
 	what types of teaching materials and resources teachers of English to young learners in Taiwan claim to use and to value, and what types of teaching materials and resources they actually use, and how they use them;
 	how a sample of textbooks, guided readers and popular children's literature commonly used by teachers of young learners in Taiwan rate when considered in relation to a range of criteria derived from a critical review of writing on children's literature and, in particular, 'good' children's literature.

There is considerable disagreement about what constitutes children's literature and, in particular, 'good' children's literature. Furthermore, although many writers claim that children's literature, particularly narrative, can contribute to children's social, cognitive and linguistic development, very little appears to have been written about the problems that can be associated with using literature designed for first language speakers in the foreign language classroom (Chapter 2). 

Although over half of respondents to a questionnaire for teachers of young learners in Taiwan (256 returns) indicated that they used story books in their classes at least once a week, some indicated that they never used them (Chapter 3). Furthermore, in 23 observed lessons taught in primary schools in Taiwan, children's literature featured only once. On that occasion, the book selected was used as supplementary material. It was not thematically linked to the main part of the lesson. Analysis of its language revealed considerable linguistic complexity, something that helped to explain the lack of any positive learner response to it. Although every one of 10 observed lessons taught to children (aged 7 on average) in a cram school in Taiwan made use of children's literature in some form, the difficulties the teacher and the learners had in relation to the texts seemed to outweigh any advantages associated with their inclusion (Chapter 4).

A sample of texts from English textbooks commonly used in Taiwan was analyzed and found to be largely made up of artificial dialogue snippets that had no genuine communicative purpose or imaginative interest (Chapter 5). A sample of graded readers commonly used in Taiwanese primary schools (designed primarily for speakers of English as a first language) was found to be culturally and linguistically inappropriate, the language being stilted and often, from the perspective of young learners in Asia, extremely complex, and the content being dated and often confusing (Chapter 6). The analysis of a sample of children's literature that is very popular in Taiwan also revealed problems relating to the level and complexity of the language (Chapter 7). 

My overall conclusion (Chapter 8) is that the use of literature designed primarily for first language speakers of English in teaching English to young learners may have little positive impact on learning, particularly where it is selected and used inappropriately. Nevertheless, there is much that those who design materials for use in language teaching, in Taiwan and elsewhere, can learn from children's literature.

text: The Role of Children's Literature in the Teaching of English to Young Learners in Taiwan Teachers of young learners of English in Taiwan are often encouraged to use children's literature in their teaching. My overall aims in this research project were to find out:

 	whether there is any agreement about the meaning of the term 'children's literature', particularly among those who recommend its use in the teaching of English to young learners in Taiwan;
 	what types of teaching materials and resources teachers of English to young learners in Taiwan claim to use and to value, and what types of teaching materials and resources they actually use, and how they use them;
 	how a sample of textbooks, guided readers and popular children's literature commonly used by teachers of young learners in Taiwan rate when considered in relation to a range of criteria derived from a critical review of writing on children's literature and, in particular, 'good' children's literature.

There is considerable disagreement about what constitutes children's literature and, in particular, 'good' children's literature. Furthermore, although many writers claim that children's literature, particularly narrative, can contribute to children's social, cognitive and linguistic development, very little appears to have been written about the problems that can be associated with using literature designed for first language speakers in the foreign language classroom (Chapter 2). 

Although over half of respondents to a questionnaire for teachers of young learners in Taiwan (256 returns) indicated that they used story books in their classes at least once a week, some indicated that they never used them (Chapter 3). Furthermore, in 23 observed lessons taught in primary schools in Taiwan, children's literature featured only once. On that occasion, the book selected was used as supplementary material. It was not thematically linked to the main part of the lesson. Analysis of its language revealed considerable linguistic complexity, something that helped to explain the lack of any positive learner response to it. Although every one of 10 observed lessons taught to children (aged 7 on average) in a cram school in Taiwan made use of children's literature in some form, the difficulties the teacher and the learners had in relation to the texts seemed to outweigh any advantages associated with their inclusion (Chapter 4).

A sample of texts from English textbooks commonly used in Taiwan was analyzed and found to be largely made up of artificial dialogue snippets that had no genuine communicative purpose or imaginative interest (Chapter 5). A sample of graded readers commonly used in Taiwanese primary schools (designed primarily for speakers of English as a first language) was found to be culturally and linguistically inappropriate, the language being stilted and often, from the perspective of young learners in Asia, extremely complex, and the content being dated and often confusing (Chapter 6). The analysis of a sample of children's literature that is very popular in Taiwan also revealed problems relating to the level and complexity of the language (Chapter 7). 

My overall conclusion (Chapter 8) is that the use of literature designed primarily for first language speakers of English in teaching English to young learners may have little positive impact on learning, particularly where it is selected and used inappropriately. Nevertheless, there is much that those who design materials for use in language teaching, in Taiwan and elsewhere, can learn from children's literature.

year: 2007

title: Indigenous Psychology in Aotearoa: Realising Māori Aspirations

authors: Levy, Michelle Patricia

subjects: Maori

abstract: Indigenous psychology in Aotearoa positions the aspirations of Māori as central.  The aim of this thesis is to describe and contribute to the development of a psychological discipline which is relevant and of benefit for Māori communities.  Part One sets the scene in Aotearoa, examining the relationship between Māori development and psychology.  Part Two explores the indigenous psychology literature base, identifying strategies which may be relevant to Aotearoa.  The key themes of context, critical mass, and mechanisms to support indigenous psychology development are identified as being relevant to Aotearoa.  Part Three explores indigenous psychology development in Aotearoa.  Data from a range of sources is qualitatively analysed to develop five themes which describe the current status of Māori development in psychology, the importance of the critical mass and the notion of collective responsibility.  Part Four, drawing from the analysis in Parts One, Two and Three, identifies 'reaching the point of irreversible change' as the next phase of indigenous psychology development in Aotearoa.  This is the point at which indigenous psychology development becomes self-sustaining.  

The point at which irreversible change occurs is when: Māori knowledge bases are a legitimate part of psychology in Aotearoa; resistance to the legitimacy of Māori knowledge bases in psychology is not a characteristic of our landscape; environments supportive of indigenous psychology development are commonplace; and responsibility for contributing to indigenous psychology development is shared among and sustained by the collective capacity of the Leaders and Producers.  Consolidation, the process by which multiple and interrelated pathways are connected to form a unified whole, is fundamental to reaching the point of irreversible change.  An original interactional framework for consolidation is proposed.  This framework is based on two key consolidating mechanisms: a working description of Kaupapa Māori Psychologies; and a Kaupapa Māori Psychologies Research and Training Centre.  Psychologies relevant and of benefit to Māori communities which contribute to the realisation of Māori aspirations are the cornerstones, with all elements of the framework leading back into this fundamental foundation.

text: Indigenous Psychology in Aotearoa: Realising Māori Aspirations Indigenous psychology in Aotearoa positions the aspirations of Māori as central.  The aim of this thesis is to describe and contribute to the development of a psychological discipline which is relevant and of benefit for Māori communities.  Part One sets the scene in Aotearoa, examining the relationship between Māori development and psychology.  Part Two explores the indigenous psychology literature base, identifying strategies which may be relevant to Aotearoa.  The key themes of context, critical mass, and mechanisms to support indigenous psychology development are identified as being relevant to Aotearoa.  Part Three explores indigenous psychology development in Aotearoa.  Data from a range of sources is qualitatively analysed to develop five themes which describe the current status of Māori development in psychology, the importance of the critical mass and the notion of collective responsibility.  Part Four, drawing from the analysis in Parts One, Two and Three, identifies 'reaching the point of irreversible change' as the next phase of indigenous psychology development in Aotearoa.  This is the point at which indigenous psychology development becomes self-sustaining.  

The point at which irreversible change occurs is when: Māori knowledge bases are a legitimate part of psychology in Aotearoa; resistance to the legitimacy of Māori knowledge bases in psychology is not a characteristic of our landscape; environments supportive of indigenous psychology development are commonplace; and responsibility for contributing to indigenous psychology development is shared among and sustained by the collective capacity of the Leaders and Producers.  Consolidation, the process by which multiple and interrelated pathways are connected to form a unified whole, is fundamental to reaching the point of irreversible change.  An original interactional framework for consolidation is proposed.  This framework is based on two key consolidating mechanisms: a working description of Kaupapa Māori Psychologies; and a Kaupapa Māori Psychologies Research and Training Centre.  Psychologies relevant and of benefit to Māori communities which contribute to the realisation of Māori aspirations are the cornerstones, with all elements of the framework leading back into this fundamental foundation.

year: 2007