A Framework for Student Projects in Computer Networks     

Edward Brown  Rodrigue Byrne 《Computer Science Education》2013,23(3):267-282

This paper describes the delivery of a computer networks course with accompanying materials and software. The course is offered at the fourth-year undergraduate level, and has few formal pre-requisites, other than general programming skills. There is a substantial architectural and coding component to any practical course on networks, and it is important to challenge the experienced and knowledgeable students without making the material too difficult for the inexperienced students who have minimal experience in programming practical applications. Some students have an industrial background and are expecting to build practical working applications. At the other extreme are students with no exposure to operating system principles, and therefore lacking pertinent knowledge, such as concurrency concepts. Our programming framework provides an event-polling approach to avoid the complexity of more general concurrency techniques. Protocol layers are implemented with data types and use a finite state machine model to control their behaviors. The resulting course offers code structure and support to students with minimal background, without sacrificing pertinent concepts, and provides the ability to construct elaborate network applications using the coding structures introduced in the course.  相似文献   

A Teacher's Valedictory     

John J. Byrne 《Clearing house (Menasha, Wis.)》2013,86(9)

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The Unique Role of Early Spelling in the Prediction of Later Literacy Performance     

Rebecca Treiman  Jacqueline Hulslander  Richard K. Olson  Erik G. Willcutt  Brian Byrne  Brett Kessler 《Scientific Studies of Reading》2013,17(5):437-444

ABSTRACT

We examined the predictive value of early spelling for later reading performance by analyzing data from 970 U.S. children whose spelling was assessed in the summer following the completion of kindergarten (M age = 6 years; 3 months). The word reading performance of most of the children was then tested after the completion of Grade 1 (age 7;5), Grade 2 (8;5), Grade 4 (10;5), and Grade 9 (15;5). A computer-scored measure of postkindergarten spelling was a significant predictor of later reading performance even after taking into account postkindergarten phonological awareness, reading, and letter-sound knowledge and prekindergarten vocabulary. The results suggest that, by the end of kindergarten, spelling is more than just a proxy for phonological awareness and letter-sound knowledge. Given the information that spelling provides, it should be considered for inclusion when screening children for future literacy problems.  相似文献   

Teaching gender studies via open and distance learning in South Africa     

Jessica Murray  Deirdre Byrne  Leandra Koenig-Visagie 《Distance Education》2013,34(3):339-352

The University of South Africa (UNISA) has recently redesigned its honors degree in Gender Studies. The course design team members have been mindful of three key factors while redesigning this degree. First, we are aligning our course design with the demands of open and distance learning (ODL) and UNISA’s institutional move to online delivery of all teaching materials. Second, we are guided by the theoretical principles of feminist pedagogy. Third, we are committed to producing graduates who can take on the challenge of being gender change agents in a country with an escalating rate of gender-based violence. This article charts the development of the Gender Studies curricular initiative at UNISA with reference to the pedagogical insights provided by feminist scholarship on teaching, learning, and technology. We hope that our experience will provide insight into the parameters and process of creating an effective program in Gender Studies within an ODL context.  相似文献   

The effects of anxiety and strategic planning on visual search behaviour     

Aidan Moran  Alison Byrne  Nicola McGlade 《Journal of sports sciences》2013,31(3):225-236

The past decade has witnessed increased interest in the visual search behaviour of athletes. Little is known, however, about the relationship between anxiety and eye movements in sport performers or about the extent to which athletes' planned and actual visual search strategies correspond. To address these issues, we conducted two studies. In Study 1, eight expert female gymnasts were presented with three digital slides of a model performing a skill that is known to be anxiety-provoking in this sport - namely, the 'back flip' on the beam. By varying the height of the beam and the presence or absence of safety mats, the slides differed in the amount of anxiety that they elicited vicariously in the viewer. In the study, the gymnasts were asked to imagine themselves in the position of the depicted model and to describe the anxiety that they felt. As they viewed the slides, their eye movements were recorded. As predicted, anxiety was associated with an increase in the number of fixations to peripheral areas. In addition, the more 'threatening' slides elicited significantly more fixations than the less feared images. In Study 2, the plans of 15 equestrian performers (5 expert, 5 intermediate and 5 novice) were elicited as they engaged in a virtual 'walk' around a computerized show-jumping course. Contrary to expectations, the congruence between intended and actual search behaviour was not significantly greater for expert riders than for the less skilled groups. Also, the fact that the top riders allocated more fixations to slides than the less skilled performers challenged the prediction that expertise would be associated with economy of visual search. Finally, as expected, the expert riders were significantly less dependent on the overall 'course plan' than the intermediate and novice equestrian performers when inspecting the fences.  相似文献   

Microfluidic platform for the study of intercellular communication via soluble factor-cell and cell-cell paracrine signaling     

Matthew B. Byrne  Lisa Trump  Amit V. Desai  Lawrence B. Schook  H. Rex Gaskins  Paul J. A. Kenis 《Biomicrofluidics》2014,8(4)

Diffusion of autocrine and paracrine signaling molecules allows cells to communicate in the absence of physical contact. This chemical-based, long-range communication serves crucial roles in tissue function, activation of the immune system, and other physiological functions. Despite its importance, few in vitro methods to study cell-cell signaling through paracrine factors are available today. Here, we report the design and validation of a microfluidic platform that enables (i) soluble molecule-cell and/or (ii) cell-cell paracrine signaling. In the microfluidic platform, multiple cell populations can be introduced into parallel channels. The channels are separated by arrays of posts allowing diffusion of paracrine molecules between cell populations. A computational analysis was performed to aid design of the microfluidic platform. Specifically, it revealed that channel spacing affects both spatial and temporal distribution of signaling molecules, while the initial concentration of the signaling molecule mainly affects the concentration of the signaling molecules excreted by the cells. To validate the microfluidic platform, a model system composed of the signaling molecule lipopolysaccharide, mouse macrophages, and engineered human embryonic kidney cells was introduced into the platform. Upon diffusion from the first channel to the second channel, lipopolysaccharide activates the macrophages which begin to produce TNF-α. The TNF-α diffuses from the second channel to the third channel to stimulate the kidney cells, which express green fluorescent protein (GFP) in response. By increasing the initial lipopolysaccharide concentration an increase in fluorescent response was recorded, demonstrating the ability to quantify intercellular communication between 3D cellular constructs using the microfluidic platform reported here. Overall, these studies provide a detailed analysis on how concentration of the initial signaling molecules, spatiotemporal dynamics, and inter-channel spacing affect intercellular communication.  相似文献   

Factors for Personal Counseling Among Counseling Trainees          下载免费PDF全文

J. Stephen Byrne  Brett Shufelt 《Counselor Education & Supervision》2014,53(3):178-189

The present study explored the use of counseling among counselor trainees and the characteristics of consumers and nonconsumers. Approximately 61% of those surveyed (n = 85) reported that they had received counseling, with the majority being mental health counseling trainees. Nonconsumers (n = 54) indicated that they coped with problems in other ways but would consider counseling if they experienced trauma.  相似文献   

Collaborative lesson hook design in science teacher education: advancing professional practice     

Veronica McCauley  Kevin Davison  Corinna Byrne 《Irish Educational Studies》2013,32(4):307-323

This article documents the process of collaboratively developing lesson hook e-resources for science teachers to establish a community of inquiry and to strengthen the pedagogy of science teaching. The authors aim to illustrate how the development and application of strategic hooks can bridge situational interest and personal interest so that lessons may become more meaningful and enduring. Qualitative data from both teacher educators and pre-service teachers involved in the design process, participant research journals, and data from six focus group sessions, illustrate the systematic reflection involved in producing effective and transformative hooks to support teachers and promote deeper student engagement and learning. Key findings reveal a pedagogical model of hook design, the complex elemental make-up of a science hook, the value that this teaching tool adds to the science classroom, and finally, the beneficial outcomes of collaborative resource design between student and staff in pre-service teacher education programmes. These hook resources aim to move beyond simply capturing student attention towards voluntary self-engagement, and have significant potential to serve as a pedagogical tool for teacher educators, as well as pre-service, newly qualified, in service, out-of-field, and experienced science teachers, to increase student academic performance, third-level science enrolments, and science careers.  相似文献   

Access to Online Local Government Public Records: The Privacy Paradox     

David S. Byrne 《Legal Reference Services Quarterly》2013,32(1):1-21

Local governments are required to provide open access to their records as a matter of law; however, there is growing public concern about the security of private information found in these files. Before the advent of the Internet, individuals enjoyed a level of practical obscurity, as viewing public records required the time and effort of a visit to the records' physical location and prevented easy access to details of individual files. However, the introduction of the Web and the availability of digital documents have caused an unavoidable conflict. On the one hand, the government is required to provide the public with a transparent view of its activities by offering open access to its records, and on the other hand, local governments need to secure their citizens’ right to privacy. Especially since September 11, 2001, and the problems associated with identity theft, finding the right balance between accessibility and privacy is not a simple task. The purpose of this article is to report on the accessibility and extent of personal information found within online local government records and to understand how local governments are managing the dichotomy between providing open access to their records with maintaining the privacy rights of the public.  相似文献   

Use of the University Library,Elibrary, VLE,and Other Information Sources by Distance Learning Students in University College Dublin: Implications for Academic Librarianship     

Sinead Byrne  Jessica Bates 《New Review of Academic Librarianship》2013,19(1):120-141

This paper reports on a study of the information behavior of Bachelor of Business Studies (BBS) distance learning students in the Quinn School of Business, University College Dublin (UCD). In order to gain a better understanding of the information behaviors of distance-learning students, the study sought to answer the following research questions:

• What are the main sources of information for the BBS distance learning students?

• What are student perceptions of the virtual learning environment (VLE), Blackboard employed by the Quinn School of Business?

• To what extent, if any, is there evidence of collaborative information behaviors and practices?

The full cohort of BBS distance-learning students was surveyed. A total of 55 out of 136 (40.4%) responded to the survey. Data were collected by means of a self-completion online questionnaire. The paper presents the findings of the study and considers implications for academic librarianship. The chief sources used by the students to assist them with study are web search engines (primarily Google) and content from the VLE (Blackboard). Search engines and the university elibrary are the main sources used by the students when conducting an information search for their course, however the students also rely significantly on their lecturers with regard to acquiring information for their coursework. The study also found that collaboration with regard to information sharing is a major facet of the information world of this cohort of students.  相似文献