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The analysis phase of the development of a new undergraduate course is described. Types of training and education are distinguished and the appropriate types of training or learning needs analysis discussed. Three components of this analysis are a discussion of the underlying concept of computer literacy, a representation of the knowledge domain as a semantic net and data dictionary, and a survey of student skills and attitudes. These are used as a basis for a course sub-net from which learning objectives are developed, as a precursor of instructional design.
Introduction
Training Needs Analysis, Learning Needs Analysis, Education and Training.
Computer literacy
The context
The target student population
Representing the knowledge domain
Discussion
References
Appendix 1 Questionnaire results
Appendix 2 Some sources of information on The Internet
Appendix 3 Data dictionary
In this report I describe the analysis phase of the development of a new university undergraduate course in cyberspace, or 'on-line' computer literacy. I first discuss training needs analysis and learning needs analysis, distinguishing education and training of different sorts. I then discuss computer literacy as a concept fundamental to education in Information Technology (IT). This influences the knowledge domain which is represented as a semantic net. A survey of student skills and attitudes provides information on the target population. A consideration of the values of computer literacy, the knowledge domain and the target population leads to the sub-net for the course, from which learning objectives can be derived.
In commerce and industry, Training Needs Analysis (TNA) is a long established prerequisite of the design of training. TNA 'involves all those activities and skills necessary to identify and analyse training needs accurately. This means specifying those gaps or discrepancies in performance that actually exist between what people are capable of doing now, what they should be doing, and what you want them to do in the future.' (Peterson 1992, p.14). Following the identification of a gap between actual and desired performance in a job, training needs analysis will generate training objectives. Then training design (instructional design) can be used to generate training activities to bridge this performance gap (Peterson 1992, p.16). For computer based training, TNA is thus the first stage in courseware development.
There are several established techniques which have been employed in TNA. Both general job description and more detailed job specification are obviously relevant (Reid, Barrington and Kenny 1992). Task analysis describes specific tasks and faults analysis describes errors in performing tasks. They can both be comprehensive in scope or focus on key tasks, but in any case they are prompted by a performance problem, or the likelihood of one (Harrison, 1989, p.160). The performance goals are based on existing experts or high performers.
However, much of what constitutes many jobs is generic skills, so that some training is not concerned only with specific tasks but with developing more general abilities, which may be applicable to a wide range of employment roles. Needs analysts are 'confronted not with needs specific to a particular organisation but with needs ranging across many jobs in different kinds of organisation and context' . These needs are for 'core, transferable skills', 'relevant to all learning tasks or managerial jobs' (Harrison 1989, p. 155). One classification of skills (Harrison 1989, p. 158) distinguishes three degrees of generality: specific task related skills, task management skills such as problem solving and planning, and job/role environment skills such as dealing with people or with confidential work . Whether or not this classification is accurate, to perform well in many jobs clearly needs a spectrum of skills from the specific to the generic. This implies a range of generality in the relevant training.
To describe more generic training outcomes, the term 'competence' has been used in recent training schemes such as National Vocational Qualifications (NVQs) (Fletcher 1991). Competence is defined as 'being able to perform "whole" work roles to the standards expected in employment in real working environments' (Reid, Barrington and Kenny 1992, p.236). Competence recognises that good performance depends upon more than just a collection of specific skills, and therefore that competencies are generic and, at least in principle, transferable to (or re-constructable in) other jobs. (Some relevant NVQ competencies will be referred to below.)
Education, in contrast to training, is broader still and includes abilities not related to employment. Harmon and King (1985, p. 237) distinguish education from training by the purpose of the learning rather than its content: training is concerned with promoting measurable performance in a job, while education is 'for its own sake', regardless of the emphasis on general concepts versus procedures. This distinction is easy to apply but of no practical use in as it says nothing about content. Their identification of training with procedural, surface knowledge and of education with a conceptual, deep knowledge (their Figure 15.1) is an over-simplification - one can have deep understanding of specific vocational skills, for example heart surgery. Furthermore, their claim that 'there are no rigorous criteria for successful education programs' because they do not lead to performance in a job is refuted regularly by students taking examinations on credit-bearing courses!
While both education and training
aim at producing useful skills, the
critical difference in the nature (as
opposed to the purpose) of the two is
that training may or may not involve
the understanding of the principles
underpinning the skills exercised while
education must (Schofield 1972, Chapter
3: The Concept 'Training'). It
is this deeper level of principle that
makes the skill outcomes of education
more widely applicable than those of
training. Although training itself
ranges from the narrowest activity of
drills to the broader development of
'intelligent capacities' it does not
involve the wider cognitive perspective
of education (Ryle quoted in Schofield,
1972,
p. 47).
With the terms education and training being neighbouring areas of logical geography, it is not surprising that there is a continuing confusion and tension between the two. Emphasis on training generally grows with pupil age, from compulsory through post-compulsory education, from teaching and learning for life to that for particular jobs. Higher Education is therefore caught in the tension between the economic requirement for vocationally relevant (generic and specific) skills immediately prior to joining the job market and the continuation of school education in general principles. In practice, there is a range of vocational relevance. Much learning activity is not vocational even in the sense of generic competencies. Although specific subjects are studied in detail this is not in the hope that all students will become professionals in the subject (medieval history, quantum physics, or whatever) but in the belief, firstly, that an understanding of underlying principles will be transferable to jobs in related domains and, secondly, that the (mathetic) skills of study are generic, transferable skills.
The historical trend in the UK is a weakening belief in the transferability or relevance of generic skills and an increased emphasis on vocationally relevant subject matter. So, for example, Latin is not in the National Curriculum and applications for Classics courses are reduced. Recently the British Government has taken more direct control of educational policy, stressing 'the vocational rather than the academic, the instrumental rather than the expressive, the extrinsic rather than the intrinsic' (Dale 1989). Ironically, the training community are now more concerned with generic skills, as a majority of work is now 'knowledge work' rather than manual, and as the pace of change in commercial life means that few people retain one job for life and few job descriptions remain fixed for long. Increasingly, the specific skills needed in employment change rapidly and employment is unpredictable. So despite the thrust of official policy, it is education, not training, that prepares for future work.
This, of course, assumes that students will be in work, but there have been dramatic changes in the nature and availability of work in developed countries. Handy (1989) described the fragmentation of business organisations into a core of traditional, permanent jobs surrounded by a periphery of part time and short contract workers, many of them insecure and badly paid. The core is shrinking rapidly (Handy 1994). Further outside, in the wilderness, is the proportion of society which is permanently unemployed. Estimates of the proportions of the three groups vary: Gore forecasts 25% core, 25% periphery and 50% unemployed (in Johnstone 1994). Currently, the percentage of UK workers now part time is 25% and growing fast, and most of these jobs were impermanent (Venning 1995). Increasing inequality in the labour market will be reflected in access to education: core workers and their employers understand the need for their continuous development of broad skills. For the rest, access to education or training will be harder.
Vocational relevance is thus an issue in developing any course in HE. This is particularly so for IT, as discussed below. The likelihood of unemployment and the changing nature of paid work present a complex challenge to liberal educators, in avoiding merely taking sides in a dichotomy of narrow, vocational training and liberal, critical education. Either will be a disservice to most learners. Johnstone (1994) suggests a focus of 'Education for Work', where 'work' is interpreted as paid or unpaid socially useful activity while 'education' includes generic skills and critical reflection. As a background to the analysis of learning needs, we can conclude that training for narrow skills is of no use, that training and education for general skills will have vocational value, and that critical thinking on the wider (social, ethical) impact of technology will promote empowerment despite economic exclusion. Any vocational element will only involve generic competencies so that the methods for setting performance goals of traditional Training Needs Analysis are not suitable. Instead, learning objectives will need to be derived from a representation of the knowledge domain, plus a description of the target student population.
Education, as opposed to training, has a social impact. It is interesting, historically, that Plato applied the term education to The Guardians (the ruling class) of ancient Athens but not to the artisans (whom they ruled). The first Education Act of 1870 justified education as necessary for those exercising democratic rights: 'we must educate our masters'. Education can thus been seen as a prerequisite for citizenship; this notion will be related to IT education below.
The subject domain of the course being designed is the nature and use of information technology. How vocationally relevant should an IT course be? It will almost inevitably have some practical content but that is not to say that it should be concerned with specific, job-related skills. The narrowest of IT training would have to relate to the use of bespoke software in an organisation. Even training in a particular package, for example Microsoft Word, is as widely applicable as is the package's use, and to some degree will give skills which can be transferred to other wordprocessors. So most IT training is at least providing competencies suitable to many jobs. However, education in IT is broader than that and concerns underlying principles along with example applications. This raises the question of the nature of truly generic knowledge, skills and attitudes in IT; what has been called 'computer literacy'. This includes not just the principles and practice of the technology but of its uses in, and impact on, society.
Ten years ago the adult education literature discussed computer literacy. Bostock and Seifert (1986) analysed the concept and reviewed that discussion. Definitions of computer literacy, at a content level, included: 'the skills, knowledge and attitudes necessary to survive and thrive in an information based society' (op.cit., p.2). Another was 'a practical introduction to the computer, its operation and a few of its possible application, combined with a critical view of the impact of computers on society' (van der Dungen 1985, p.12). Bostock and Seifert (1985) summarised the effects of computer literacy as : 'to be able to use computers as tools and, in fact, to demand that they are presented as tools, to facilitate and not obstruct our purposes'. A more progressive stance was taken by Winter and Riis (1985, p.66) : 'computer literacy should be defined ... in terms of helping the individual to develop an attitude of critical curiosity to technological innovation (so that) the individual has to think independently and relate his/her own needs to the possibilities and pitfalls of the information society (and) the individual can continually develop through self-renewal if the knowledge he/she acquires is open-ended and stimulative to his/her awareness'. Bostock and Seifert (1985) summarised the social connection with literacy: 'Written literacy is a requirement for a participatory democracy.... As Europe is transformed into an information society, widespread computer literacy is essential for the preservation of social and political freedom'. Liberal education in IT, for literacy, implies much more than generic vocation skills which even the broadest TNA could diagnose.
Bostock and Seifert (1986) discussed the term 'literacy' by comparing print literacy and computer literacy. Computer literacy is not merely a general familiarity with a specific subject, in parallel to such terms as 'political literacy'. The computer is not just another subject domain but a more fundamentally important medium. It is only the third general medium used by humankind, following verbal and print media (Bostock and Seifert 1986, Papert 1993), and it happens that there are historical parallels in the early attitudes to, and acquisition of, print and computer literacy. Just as print literacy is more than the narrow skills of reading and writing (deciphering phonics), so computer literacy is more than being able to use a computer; literacy is being at ease in the milieu (of print or computers), to be unconstrained by, and free from the anxieties and negative attitudes of, illiteracy (Bostock and Seifert 1984, p.22). Recently, Papert (1993, p.11) has clarified this discussion with the distinction between literacy and letteracy, which he defines as the narrow skill of reading text. Literacy is the broader understanding of 'ways of knowing' or 'reading the world', including social awareness - the difference, perhaps, between being able to read a newspaper and of believing everything in it. As IT becomes more powerful and pervasive (particularly as multimedia and telecommunications are synthesised) it is increasing possible to become literate while being illetterate in IT. To put this flippantly: the natural medium of the Nintendo Generation is video, not text, and to them telecommunications are as natural as conversation or the telephone. While Papert does not suggest that letteracy will be made redundant by the computer medium in the near future, the possibility illustrates the logical distinction.
'Computer literacy' has been degraded in some institutions to mean a passing awareness of the technology; minimum practical skills. Someone with minimum reading and writing skills would not be described as literate in the medium of text, even though letterate in manipulating text. Similarly, computer literacy involves ways of understanding the world, ways of knowing, that derives from computer culture (societal culture based on the application of IT, not the 'computerism' subculture of computer science departments) (Papert 1993, p.52). This implies that courses contributing to computer literacy must include not just technical skills, and the principles underlying them, but the broader impacts of the technology. In Higher Education, rather than training for specific jobs, learning goals are inevitably wide. In the case of IT, education for computer literacy is more than minimum technical skills; it is education for life in an information society.
As a precursor to designing educational interventions (instruction) a learning needs analysis should generate and represent learning goals, and describe the target population characteristics. But before learning goals can be defined, the knowledge domain which we wish students to acquire must be elicited and represented. What follows are descriptions of the target population and of the knowledge domain as prerequisites to designing a new course for 'on-line computer literacy'.
To explain the origin of the new course, it is worth noting that at Keele University I have taught and organised computer literacy courses in some form since 1981. Until recently they have included only a cursory mention of computer networking. However, in the last few years it has become clear that networking across organisations and the globe are adding a significant new dimension to the use of computers. In the last two years the Internet has both become the de facto global standard and has surfaced into popular culture (as the Superhighway, I-way, Infobahn, and so on). Some recent symptoms of popular Internet awareness are that email addresses are now given routinely on teletext and on radio and TV programs, that two new magazines dedicated to the Internet were launched in Autumn 1994, that many magazines of all sorts have articles about it, and that one publisher recently produced a catalogue of their new books about the Internet. The only thing growing faster than the Internet (which is doubling each year) is its popularisation. In September, 1993, I advertised a first adult education course on The Internet and had eight recruits; in January 1994 there were 16; in September 1994 enrolment was stopped at 24. Commercial courses on the Internet cost around £400 per day, twice the cost of routine computer training. Undergraduates are aware of this popularisation; at Keele an Internet Society now meets weekly in the Students' Union.
Undergraduates in arts, humanities and social sciences at Keele University must do a science subsidiary course. About 350 each year opt for computer science, as a two semester course. The first semester course is an introduction to IT and standard business applications. In the second semester a course called Office Automation recruits about 200 of these students, while others choose more subject related options. For 1995/6, I am writing a new course to replace Office Automation, with a placeholder title of 'the Internet and groupware'. It is nominally four hours per week over twelve weeks, providing 20 credits. Initial thoughts on topics for inclusion are the use of the Internet for study, recreation and business; computer conferencing and groupware; teleworking and virtual organisations; a mix of technical and inter-personal skills; knowledge of network technology; and the implications for individuals, organisations and society.
Mager (1988, chapter 7) describes the description of the intended students: target population description, as the necessary information on the starting point for training. In the case of education it can be argued that, to the extent that education is self directed, learners also have a legitimate input into defining learning goals and learning methods. Answering the following checklist of questions would provide a profile of trainees/learners.
a. what
are their interests;
b. why are they doing the training;
c. do they want to be here;
d. what is the gender split;
e. what are their attitudes;
f. what is their current experience;
g. what can they do;
h. what tools can they use;
i. what physical characteristics or
disabilities do they have;
j. what other activities are they also
doing;
k. what variation is there amongst
them?
Answers to questions 1, 5,6,7,8 and 10 could be provided at least partially by a questionnaire. Questions 1 and 5 especially would benefit from interviews. Answers to questions 4, 9 and 10 should be available from student records. Answers to 2 and 3 can be given at administrative a level but at a individual level frankness could not be assumed. Question 11 is important if instructional methods are to take into account individual differences.
________________________________________________________________
To: Computer Science Subsid.
students, about a new
Module on the Internet and
communicating using computers.
I am
preparing a new module for the Computer
Science Subsidiary
course, to
replace the existing Office Automation
module in
1995/96.
It would be very helpful if you would
return this
message by
email with answers to a few questions.
In this way I
hope that
the course will meet the interests of
students better.
Use the
Reply option in your mail reader,
include a copy of this
message
and then edit it by adding answers on
the line below each
question.
You can answer very briefly or at
length. Your reply will
be treated
anonymously. Thank you for your help.
Stephen
Bostock.
stephen@cs.keele.ac.uk
1. What
are your main courses?
2. Before
you did Computer Science subsid.,
could you
use remote libraries ?
use Usenet
or other on-line conferences?
find
resources on the Internet?
3. At the
end of a course on the use of a
world-wide computer
network,
what would you want to know about, and
know how to do?
4. Would
you want skills to help in your
studies, to help in
future
jobs, for recreation, or what?
5. If you
were doing a course about using
computers to communicate
with other
people, what skills would you want to
have at the end
of it?
6. How do
you feel about using text messages to
communicate with
other
people via computer systems? (as
opposed to face-to-face
meetings,
telephones,...)
7. Are you
enthusiastic or suspicious of the
changes
telecommunications
will probably cause in all our lives?
8. It
would be useful to be able to talk over
your answers, face-
to-face.
If you are prepared to do this, please
indicate YES
below, and
put the time and day you are in the
Lovelace Lab. I will catch
you there.
(If you do not put YES I will not
follow up your reply.)
9. Any
other comments?
______________________________________________________________________________________
A questionnaire was designed to get some answers from the current year's students . The timing of its distribution was difficult: when it was being prepared the Autumn term was in its last weeks, following which students would be harder to contact as they prepared for examinations between semesters. The questionnaire could not, therefore, be given a proper evaluation with a pilot group. It was designed according to general principles of good design, given an informal check by four colleagues teaching the course this year, modified and then mailed electronically to 350 students. Sixteen replies were returned over the last two weeks of the term; two duplicate sets of answers were discarded to leave fourteen (see appendix 1 for replies). Although the questionnaire attempts to arrange interviews, only one interview was conducted.
The answers to the ten questions below include the questionnaire results.
a. What
are their interests?
Questions 3, 4 and 5 ask about
interests in the proposed course.
Question 3 asked what they wished to
learn. Many answers refer to
communicating using email, finding what
information is available and
downloading it. One referred to broader
social issues, one displayed some
technical knowledge of file types.
Question 4 asked why they wanted to
learn. Relevance to jobs was mentioned
six times, relevance to studies, four
time, and all of jobs, studies and
recreation, five times. So there was no
particular bias in the reasons for
wanting skills. Question 5 asked about
interpersonal communication via
computers. Answers with specific ideas
mentioned using the technology/tools
with confidence five times, issues in
the human element of communication
twice, and consideration of advantages
and disadvantages only once.
b. Why
are they doing the training?
They are required to do a subsid. and
from my experience over two years some
have chosen computer science because
they expect it to be easier than other
sciences.
c. Do
they want to be here?
This varies greatly. The respondents
were generally enthusiastic but the
response rate was only 5%. I suspect
that many hope to learn useful skills
but also find it progressively more
difficult. A significant minority fail
the end of semester exam in Office
Automation, only passing on the
coursework.
d. What
is the gender split?
Exact figures are not available but the
sexes are approximately equal in
number.
e. What
are their attitudes?
Question 6 concerned attitudes to using
technology to communicate. Six answers
were generally positive about text
communication via computers. Two
thought it allowed clearer messages.
Three thought the asynchronous nature
convenient. Two expressed some worries
about communicating in this way and one
thought it less formal than text on
paper. One though it good in allowing
one to meet a wider range of people.
Question 7 concerned attitudes to social impact of telecommunications. Seven answers were enthusiastic, three suggested a balanced attitude and only two were suspicious or wary. Question 8 asked whether they would be prepared to talk with me face-to-face about their views and nine agreed to. Question 9 offered a space for any other comments. Two answers were generally positive about such a course and two had specific problems with software.
f. What is their current experience?
g. What can they do?
h. What tools can they use?
Question 2 in the questionnaire asked them about three skills which are relevant and diagnostic of Internet skills. Only one respondent answered positively to all. Another is a self confessed 'surfer' of the Internet but did not know how to use newsgroups or remote logins to libraries. Apart from any experience students get in the first semester, the abilities with Internet tools are likely to be practically none. However, the use of the Campus Wide Information Service which is a World Wide Web home page is growing. Unfortunately the questionnaire did not refer to the Web although one respondent did want to know how to use Mosaic, the commonest Web Browser. Nonetheless, I expect within a year or two, many students will have tried to use Mosaic even though they may not realise the scope of the resources and tools to which it gives access.
i. What
physical characteristics or
disabilities do they have?
Based on current experience, the number
of students with disabilities is very
few. For one or two students with
visual disabilities special hardware is
available. The presence of these
students will affect later decisions on
instructional media. It may influence
curriculum content on the applications
of IT for special needs.
j What
other activities are they also doing?
The main subjects of the respondents
were: Mathematics, Management, European
Studies, French, Psychology, Biology,
Foundation year, criminology,
philosophy, history, English
literature, Russian studies, American
studies, computer science, Geography,
economics, politics, electronic music,
Law and German. In short all of the
Humanities and social science subjects
can be expected, with some science
subjects.
k. What
variation is there amongst them?
What most of the students have in
common is very little knowledge or
skills of the Internet or on-line
communication. There is some variation
in their reasons for wanting new
skills. There is great variation in
their subject interests.
Knowledge acquisition, or cognitive task analysis, is the description and analysis of knowledge and cognitive skills, and is therefore parallel with traditional task analysis of TNA but in the cognitive arena (Sime 1992). Knowledge acquisition and representation methods have been developed for knowledge engineering purposes - the construction of knowledge based systems such as expert systems. However, they may be suitable for representing learning goals while not prejudging learning or teaching methods needed to achieve those goals. Knowledge is traditionally elicited from human expert. One feature of knowledge is that it is structured; the structure is part of the knowledge, and knowledge representation methods represent this structure explicitly, in different ways.
Another feature of knowledge is that it is individual (Sime 1992) so that combining knowledge from several experts is difficult. This is expected, even inevitable, at a psychological level, and need not be a problem in knowledge engineering when, for example, building an expert system. However, it is unhelpful for the purposes of learning needs analysis prior to the design of instruction. While it is appropriate in a specific job that training goals should be based on an individual's expert performance, it is inappropriate if learning goals are general competencies or principles, skills and attitudes. While a traditional, classical education might have been based on sitting at the feet of The Master in a subject, this cannot be applied to the use of a world-wide technology with historically important implications. No one Master exists. One possibility would be to elicit expertise from myself or a colleague who uses the Internet regularly, but each of us uses it for our own purposes and ignores some of its facilities. The problem is similar to that of capturing the expertise of literacy - what books should an expert have read, or of what types of writing should an expert be capable?
What representation method is suitable? Summaries of methods of representing knowledge (Harmon and King, 1985, Forsyth, 1989, Shadbolt, 1989, Norman, 1982) include semantic networks, repertory grids, rules, object-attribute-value triplets, procedures, attribute and A-Kind-Of lists, flow charts, causal networks and frames. In a discussion of methods appropriate to different stages of the knowledge engineering process, Nwana et al. (1994) distinguish the stages of knowledge representation as Mediating Representations (between knowledge engineer and expert), Intermediate Representations generated from these by analysis, a Domain Model which is synthesised from these, and Machine Representations (code) can then be generated. They argue for the importance of using representations appropriate to a domain rather than ones determined by software tools to be later employed. In particular, concept maps or semantic nets are most often useful in early stages (Nwana et al. 1994, p.266). Current models of the psychology of learning stress connectionism (e.g. Papert 1993, chapter 7), reflecting the common assumption that "a person's knowledge is an interrelated system of multiple interlocking parts" (Forsyth 1989, p. 135). Firlej and Hellens (1991, p.142) suggest that 'rules, frames and semantic nets' are the prevalent forms of representing abstracted knowledge. For these reasons, and because a net does not constrain the wide range of types of knowledge encompassed in the idea of computer literacy, a semantic net was used. In addition, a simple data dictionary was created to record the specialist meanings of words as used in the domain (Firlej and Hellens 1991, p.128, Appendix 3).
In practice, the knowledge was represented as a semantic net, elicited from myself as the expert and supplemented by published and on-line sources, in a series of versions. The penultimate version 5 was submitted to five colleagues for comments, which were incorporated into version 6 (attached).
Semantic nets are the most general of representations, consisting of objects (physical or abstract entities and classes, generally nouns ) and arcs or links between them (relationships, generally verbs or adjectives). Common types of links are is-a , has-a, and caused-by but others are appropriate to particular domains. A semantic net of this domain was produced after several drafts (attached). Technical facts and methods are often easiest to describe, and this was the starting point: the various tools available to access people, information and services on the Internet. To this was added broader economic and ethical aspects of telecommunications at the personal, organisational and social levels (Figure 2). Such a knowledge representation 'can become very densely interconnected. Explicitly drawing out all the connections is tiresome, but it is an essential part of the encoding process' (Forsyth 1989).
The document sources used were courses (including the one I teach), books and on-line material on the Internet itself (see appendix 2). A survey of texts on the Internet shows that while all cover a core of basic subjects (email, usenet, ftp, telnet), they have different emphases and additional topics. Few say anything about human issues in communication or social determinants or impacts of the technology. Furthermore, because this technology is changing so fast, magazines and newspapers, and the Internet itself (of course) is more accurate than any textbook.
The NVQ Level Three IT Candidate Profile was consulted as a source of generic competencies (BTEC 1993). Two Statements of Competencies concern networking:
• IT/SC 3.042 - Computer Network System Investigation and Installation concerns procurement and installation of a Local Area network.
• IT/SC 3.060 - Network Computer Services Supervision concerns LAN configuration and security, and media storage.
Relevant concepts include network protocols, network resources and performance, data security and protection, legislation on computer misuse and copyright, and the context of the Health and Safety regulations. However, Wide Area Networks and the Internet are not considered, and the competencies do not require an understanding of principles wide enough to be applicable to a global network. NVQ competencies are therefore of little use.
The framework of this analysis is that a consideration of the nature of education and computer literacy indicates the need for a broad curriculum within a domain which is represented by a semantic net. From this, a sub-net for the specific course is drawn, based on the target population and practical limitations, and from this learning objectives can be derived. This discussion will comment on each stage.
Existing courses on the Internet are generally concerned with developing personal skills, supported by underlying principles. For example, Exploring the Internet (email from agocg-mm@mailbase, 28/11/94) lists the following goals:
acquire basic networking skills,
find out about networked formation services,
learn to navigate competently the information highways of the global networks.
The use of competent is interesting here, and illustrates that it would be possible to write generic training competencies for the use of the Internet in the form of NVQs. Furthermore these could be supported by general concepts and principles making them more generic as available tools change. But any broader implications of the technology are generally absent.
The consideration of the nature of
the skills needed by the target
population in the light of their likely
patterns of future work (paid and
unpaid) led to a broad definition of
computer literacy, and thus 'on-line
computer literacy'. A quick test for
such a curriculum was proposed by
Winter and Riis (1985, p.67) who
distinguish two dimensions along which
computer educational courses can be
designed: the level of concretisation
or tangibility can be general or
specific, and the scientific paradigm
employed can be either humanistic or
technological. They suggest that all
four categories should be included in
computer education and Table 1 gives
examples from the semantic net
described here which fall into these
categories. They recommend that the
four categories are used to direct
planning of courses to guarantee a
well-balanced content, and to avoid
conflict between promoters of the two
paradigms. a
protection, teleworking
Tec
The target population has been described and this influences the appropriate curriculum. The responses showed negligible current knowledge, and the enthusiasm of the responders (only 8%) to the questionnaire is probably not representative of the whole group (based on experience). These students, being more familiar with and motivated by paradigms from the humanities and social sciences, will feel estranged in a technical course. While they may not all be technophobes, the attitude of many to technical knowledge may be, at best, neutral. Papert (1993) suggests that we replace the one-dimensional concept of 'motivation' by the concept of relationships with areas of our own knowledge similar to those we have with people. A rich network of broader issues overlaid on technical skills should encourage such relationships, 'warming to' their technical skills by 'conduction' (through the semantic net) from their 'hot' domains of humanistic knowledge.
The next stage is to select a sub-net for this course which reflects the concerns discussed above (Figure 3). In drawing a course sub-net one criteria seems paramount: is it a consistent net in its own right? If not, the course would not 'hang together', not represent an integrated body of knowledge. This would make it harder to learn (by individual, active construction) and less susceptible to the motivational 'conduction' proposed above.
On another occasion, for a different target population, a somewhat different sub-net might be used. For example, for adults on an extramural course, the area concerning types of internet connection would be relevant.
From the course semantic sub-net it is possible to generate learning goals, as we move towards instructional design. Harrison (1992), for example, recommends a hierarchy of goals where each goal is decomposed into measurable learning objectives. This involves taking each major net node and, working outwards to other nodes, decomposing it into increasingly specific objectives to give a traditional hierarchy of objectives (Figure 4). The top layers of this hierarchy are taken from the main concepts in the semantic net.
_______________________________________________________________________
Figure
4. Learning objectives
0.
Cyberspace literacy
1. To understand the nature and
use of files
1.1 To understand file names
1.1.1 To be able to use rules
for file naming
1.1.2 To recognise common file
types by their name extensions
1.1.3 To be able to interpret a
directory listing
1.1.4 To be able to use a
subdirectory structure
2. To understand the nature and
use of Internet computers
3. To understand the use of
cyberspace by, and its implications
for, people
4. To understand the use of
cyberspace by, and its implications
for, organisations
5. To understand the use of
cyberspace by, and its implications
for, societies
_______________________________________________________________________
A semantic net is a more complex (graph) structure than a hierarchical (tree) structure. Part of the knowledge elicitation and representation process involves deciding which of the many possible links in the net are important and worth representing. There are nonetheless more interrelations than a tree hierarchy would allow. Therefore, translating the semantic sub-net into a hierarchy of learning objectives will somewhat simplify the network structure, but this is necessary in order to document learning objectives systematically. It is worth representing the additional links initially so that they are recognised as part of the course documentation and possibly used on another occasion.
Finally, the issue of whether a semantic net should itself be reduced to a hierarchy is related to the nature of the nodes in the net. Some nets consist largely of classes, subclasses and instances, adopting a taxonomic or object-oriented approach. These will be hierarchies. The semantic net presented for this domain (Figure 1) is just one individual view amongst many possible. For example, it would have been possible to arrange the network tools (ftp, telnet and so on) into classes, so that most relationships would be of the type isa. This hierarchy would have then been simple to transform into a hierarchy of learning objectives. However, the knowledge represented by the net would have been impoverished at the expense of moulding it to a subsequent method. The widely accepted principle of software engineering, that analysis and then design products should not be influenced by the requirements of subsequent methods in the development process (e.g. Nwana et al. 1994) also applies here. The semantic net should represent the domain as richly as possible without regard to its later uses in instructional design.
Bostock, S.J. and Seifert, R.V. 1984. Curriculum development in computer literacy. Studies in the education of adults 16, October, p.20-31.
Bostock,
S.J and Seifert, R.V. 1985. Computer
literacy and adult education. pp. 73-74
in New/Informtion technology and
adult education. Newsletter of the
European Bureau of Adult Education,
1985 issue 1/2.
Bostock, S.J. and Seifert, R.V. 1986. Adult computer literacy: analysis and content. pp. 1-17 in Bostock S.J. and Seifert R.V. (eds) Microcomputers in Adult Education, Croom Helm. London.
Bostock, S.J. and Seifert, R.V. 1983. Computer integration and computer literacy. pp.30-38 in Microtechnology and the education of adults. Advisory Council for adult and continuing education.
BTEC 1993. Candidate Profile, NVQs at Level 3 in Information Technology. Business & Technology Education Council, London.
Dale, R. 1989. The state and education policy. OUP, Milton Keynes.
Fletcher, S. 1991. NVQs, Standards and competence: a practical guide for employers, managers and trainers. Kogan Page, London.
Firlej, M and Hellens, D 1991. Knowledge elicitation - a practical handbook. Prentice Hall, N.Y.
Forsyth, R. 1989. From data to knowledge. pp.125-141 in Expert Systems: principle and case studies . Second edition. Ed. R. Forsyth. Chapman and Hall. London.
Handy, C. 1989. The age of unreason. Arrow.
Handy, C. 1994. The empty raincoat. Hutchinson, London.
Harmon, P. and King, D. 1985. Representing Knowledge. Wiley, New York.
Harrison, R. 1989. Training and Development, IPM, London.
Harrison, N. 1992. How to design effective text-based open learning. McGraw Hill, London.
Johnstone, R. 1994. Jobs, unemployment and education for work. Studies in Continuing Education. 16, (1) 37-51.
Norman, D.A. 1982. Learning and Memory, Chapter 9.
Nwana, H.S., Bench-Capon, T.J.M., Paton, R.C. and Shave, M.J. 1994. Domain-driven knowledge modelling for knowledge acquisition. Knowledge Acquisition vol. 6, pp. 243-270.
Mager, R.F. 1988. Making instruction work or Skillbloomers. Lake, Belmont CA.
Papert, S. 1993. The Children's Machine. Harvester - Wheatsheaf, New York.
Peterson, R. 1992. Training Needs Analysis in the workplace. Kogan Page, London.
Reid, M.A., Barrington, H. and Kenney, M. 1992. Training Interventions, third edition, IPM, London.
Schofield, H. 1972. The philosophy of education: an introduction. Unwin Education Books.
Shadbolt, N. 1989. Knowledge representations in man and machine. pp. 142-170 in Expert Systems: principle and case studies . Second edition. Ed. R. Forsyth. Chapman and Hall. London.
Venning, N. Having the time of their lives. The Guardian Careers section. January 21, p. 2.
H A
Winter and U Riis, 1985. Computer
education and democracy. 64-67 in New/Information
technology and adult education.
Newsletter of the European Bureau of
Adult Education, 1985 issue 1/2.
Questionnaire
to current students on Subsidiary
Computer Science
(and verbatim answers)
Answers
from
•
TLF Lawrence
•
J Beavis
•
C Ball
•
JKM Fung
•
J Parish
•
M Spires
•
MB Overton
•
C Moorcroft
•
MW Willis
•
KJ Taylor
•
CJ Last
•
AJ Gittins
•
U Lentz
•
JD Danagher
To:
Computer Science Subsid. students,
about a new
Module
on the Internet and communicating using
computers.
I
am preparing a new module for the
Computer Science Subsidiary
course,
to replace the existing Office
Automation module in
1995/96.
It would be very helpful if you would
return this
message
by email with answers to a few
questions. In this way I
hope
that the course will meet the interests
of students better.
Use
the Reply option in your mail reader,
include a copy of this
message
and then edit it by adding answers on
the line below each
question.
You can answer very briefly or at
length. Your reply will
be
treated anonymously. Thank you for your
help.
Stephen
Bostock.
stephen@cs.keele.ac.uk
1.
What are your main courses?
•
Mathematics and Management
•
European Studies and French
•
Psychology and Biology
•
Foundation year , then computer
science and management
•
FY - criminology and philosophy
•
Psychology and history
•
English literature, Russian
studies
•
American study and comp.sci.
•
Geography and economics
•
History and politics
•
psychology, electronic music
•
politics and history
•
European studies and Russian
studies
•
Law French german
2.
Before you did Computer Science subsid.,
could
you use remote libraries ?
use Usenet or other on-line
conferences?
find resources on the Internet?
•
no,
no,
no
•
no,
no,
no
•
what?,
huh?,
I surf :)
•
no, only Keele
no
no
•
no
no
no
•
no
no
no
•
yes
yes
yes
•
no
no
no
•
no
no
no
•
N
N
N
•
N
N
N
•
N
N
N
•
No but I still can't
N
N
•
N
N
N
3.
At the end of a course on the use of a
world-wide computer
network,
what would you want to know about, and
know how to do?
•
-
•
Basic computer skills in the
world of work and everyday lives
•
download from ftp sites,
uuencode .gifs, where to look for
information, just about everything
really
•
I would like to learn as much as
I can but the thing is that it is
difficult to tell what I wanted to
learn because I don't know a lot about
the names of the programming system.
•
experience of the network and
experience in using it; awareness of
the scope of the network; ethical,
political, legal etc. implications of
the network; practical aspects of using
the network in future (eg online hire
facilities etc.)
•
access it first, then what it
can be used for
•
use of email and the university
newsgroups, use of Mosaic/other
browsers, file transfer and download,
ftp, telnet
•
-
•
I would want to know what was
available within a particular category
and I would like to know how to access
all the information including menus and
introduction pages
•
To communicate, using the
system, with users throughout the world
•
how to communicate and find
information using Internet
•
would send and receive worldwide
mail
•
how it works technically and how
I would use it
•
Find whatever information there
is on the network
•
-
4.
Would you want skills to help in your
studies, to help in
future
jobs, for recreation, or what?
•
I would just like to be able to
use my computer and its packages so
that I could use them for anything (My
job mostly!)
•
I would like to gain the skills
that would best help me in my studies
and perhaps future jobs since I think
that although it doesn't really appeal
to me, I will probably find myself
using computers at some stage in my
career.
•
all three, there is a lot of
stuff out there on the net
•
Yes I would like to be a manager
of some source which they need the
skills of to use a computer.
•
YES!
•
yes
•
Not for studies/jobs. I find
this is almost entirely connected with
my own interests (sci-fi)
•
-
•
Mainly to help in my studies,
but also to help in future office jobs
•
To help with studies and a
future job.
•
pass
•
future job as a retail manager
•
getting access to additional
material for my studies would be
helpful
•
Everything
5.
If you were doing a course about using
computers to communicate
with
other people, what skills would you
want to have at the end
of
it?
•
How to send and receive messages
on different systems
•
-
•
how to flame and mailbomb:) ..
nah,how the net works...where all the
different sites are and stuff
•
the only thing is that is hard
to tell your feeling to others also I
think it will be better if we could see
the face of the people we are talking
to through the screen.
•
Understanding of software
issues; experience of particular
software; a little about practical do's
and don'ts of effective communication -
ir human element
•
how to use a real time talk
facility (if there is one)
•
complete confidence in using elm
(or whichever email package) and/ot tin
(or whichever newsgroup package)
•
To be able to use the computer
with confidence
•
Basic knowledge about how to use
the system its advantages and
limitations
•
To use the system to communicate
with people and to understand a little
about how it works
•
pass
•
those already developed by the
course
•
whatever is necessary, I don't
know anything about it yet
•
All the necessary skills
6.
How do you feel about using text
messages to communicate with
other
people via computer systems? (as
opposed to face-to-face
meetings,
telephones,...)
•
In a way it is better as you
cannot mis-interpret information given
to you, and you do not have to be good
at talking and communicating.
•
It is an interesting way of
communicating with people and it means
that you get to 'meet' more people even
if you don't know who they are. The
option is always there to meet up with
them if you prefer talking face to face
but it is up to the individual.
•
its a good laugh, I regularly
use 'talkers'
•
-
•
they do have advantages. My
experience of them in an office
environment was generally fairly
positive. One slight difficulty is when
compared to ordinary text, ie. letters
they tend to be much more informal and
also pretty error ridden as they are
not subject to the same checks as
letters (and tend to be typed by the
sender, who can rarely type and often
not spell either). I like their
immediacy, but find them a bit
intangible. (Unless you print hem out)
•
useful, as if they are
unavailable to talk to or phone, gets
there immediately
•
Fine. Nothing special.
•
I like it
•
Just as easy in fact even more
so as you can use it at your own
convenience. However I am a little
worried as toi the safety of the
communications.
•
I'd prefer to have a face to
face meeting or, failing that, to speak
on the telephone but as that cannot
always be viable it is very useful to
be able to communicate in other ways ,
using text messages.
•
it makes it easier to say things
people don't want to hear, so its a bit
of a getout.
•
Its a good idea but I do not
appreciate strangers sending me silly
messages
•
I've got no problems with that,
its just like writing letters, well,
sort of
•
Like the idea
7.
Are you enthusiastic or suspicious of
the changes
telecommunications
will probably cause in all our lives?
•
-
•
perhaps a little wary about the
change. I don't particularly favour the
way in which we are gradually being
taken over by computers
•
I think its a good thing as long
as it doesn't cost too much. I have
made friends in Canada and Australia
etc.
•
-
•
Mainly suspicious! But I'm not
scared - I'm not really a technophobe.
•
enthusiastic
•
Neither. More ... 'interested'
is the best description I can give.
There will be changes , there will be
big changes. Until I know fully what
they are I am neither enthusiastic nor
suspicious.
•
enthusiastic
•
Enthusiastic
•
Not especially enthusiastic but
not suspicious.
•
enthusiastic
•
Indifferent- I do not have
enough information though most people
agree we should be well on the
superhighway.
•
enthusiastic
•
enthusiastic
8.
It would be useful to be able to talk
over your answers, face-
to-face.
If you are prepared to do this, please
indicate YES
below,
and put the time and day you are in the
Lovelace Lab. I will catch
you
there. (If you do not put YES I will
not follow up your reply.)
•
Yes, I am in the lab at ...
•
-
•
Yes 11-1 Monday mornings
•
Yes on Thursday at 11-1 pm
•
Yes, Thursday 9-11
•
-
•
Eeek! I am never *in* the
Lovelace Lab :) I do the computer
programming module. If you want to talk
to me while I am doing that, I'm in the
Turing Lab on Tuesdays 5-7 and
Wednesdays 9-11.
•
Yes Tues 2-3
•
YES Tuesday 2-4
•
-
•
-
•
-
•
yes I don't mind Wed 9-11
•
YES Wednesday 9-11 am
9.
Any other comments?
•
No
•
no
•
yeh...help with the www! kate
xxx
•
no
•
no
•
-
•
Two favourite gripes: one, the
university filters out the alt.sex.*
newsgroups (I believe in the freedom of
internet); two, why do we have to use a
DOS/UNIX package for email and not a
Windows package? My personal preference
is for the acorn range of computers
(much better than PCs) but at least
Windows is better than DOS/Unix. The
current seems to be set up so that
anyone who isn't fluent in computers
(which I lay claim to being close to,
heh heh) has no chance of using email
simply because its so hard to find.
•
The more I learn about computers
the more I like them. More in a
practical way, than how a computer
works.
•
-
•
-
•
no
•
no
•
Its a good idea
Printed:
No-office computing- road warriors.
10-20, Oct. 94, Compuserve Magazine,
Teleworker magazine, The Telecottage
Association..
Articles from Computing and The
Guardian Online (Thursdays)
Cyberspace and the law. 1994.
E.Cavazos & G. Morin, MIT Press.
Necromancer. William Gibson.
(origin of 'Cyberspace')
The Message in the medium.
Harvard Law Review. March 1994.
Zen and the Art of the Internet.
B.P.Kehoe. Second ed. Prentice Hall.
1993
The whole internet and catalog.
E. Krol.1993
The Internet Companion, T.
LaQuey, Addison Wesley. 1993.
Growth, competitiveness and
employment , European Commission
white paper, 1993.
Europe and the global information
society, EC 1994 (Bangemann
Report).
Teleworking, teletrade and open
networking, DTI Command 2734, 1994
Workers privacy: monitoring and
surveillance in the workplace
International Labour Organisation.
Computers and Society, Colin
Beardon & Diane Whitehouse, 1993.
Intellect Books
Code of Conduct for Multinational
telecommunication firms. Communication
Workers Association
Harassment at Work. Booklet,
Labour Research Department
Homeworking - negotiators guidelines.
BIFU. 1993
The opportunity and challenge of
telematics, Labour telematics
Organisation. 1994.
Information Superhighways. and Guide
to the Information superhighways. and Guide
to teleworking.
3COM. 1994.
Rethinking work: new concepts of
work in a knowledge society, the
telework option reviewed. RACE
1994.
Telework stimulation. EC, DG
XIII-B 1994
Smart Valley telecommuting guide.
Rethinking worker democracy.
1994. Centre for Alternative Industrial
and Technical Systems, TUC.
Online:
Guide to Internet
Psychology and Internet, CTI Centre for
Psychology
Messages Re: INTERNET TRAINING PROGRAMS
in the TRDEV-L@PSUVM.PSU.EDU
listserver.
Exploring the Internet workshop,
message 28/11/94 from
agocg-mm@mailbase.ac.uk
Ethics in cyberspace. Laverna Saunders.
http://cpsr.org/dox/ethics.cyberspace.saunders
Ethics and Law on the Electronic
Frontier, H Abelson & M Fischer,
http://www-swiss.ai.mit.edu
EFFector ejounal
Wired ejournal
Electronic Frontier Foundation, usenet
comp.org.eff.talk
Computer Professional for Social
Responsibility, usenet
comp.org.cpsr.talk
MITnet Rules of Use
National Information Infrastructure
Advisory Council: (Draft) Privacy
Principles.
Guide to network Resources. EARN, May
1994. version 3.0.
Emily-Postnews (Netiquette on
potter.cs.keele.ac.uk help system).
gopher Name=Acceptable and
Unnacceptable Use of Net Resources
(K12) host=riceinfo.rice.edu
Path=1/More/Acceptable Port=1170
Type=1
Kidzine listserv@vm1.nodak.edu
Media literacy gopher site:
interact.uoregon.edu or
URL:gopher://Interact.uoregon.edu:70/1D-1%3a632%3aMedia%20Literacy
THE JARGON FILE, VERSION 3.0.0,
27 JUL 1993 (Hackers dictionary)
Courses:
Accessing the Internet, Data-Tech.
The Internet: introduction to the
online world. S.J.Bostock, 1993, 1994.
The ROADMAP email internet course,
Autumn 1994
Acceptable
Use Policy - a written policy of a
site/ organisation governing the
purposes to which its computer
facilities can be used by its
registered users.
anonymous
ftp - using ftp to copy files from a
computer without being a user
registration on it,
archie
- a program for finding files available
by anonymous ftp.
BBS
- bulletin board system, a text
messaging system on a PC available
remotely by telephone using a modem on
a PC, also providing files for copying.
chain
letter - an email message mischeviously
encouraging the recipient to forward
and duplicate it, or send email to a
specific username.
CMC
- computer mediated communication,
electronic text conferencing, usually
asynchronous.
connection
(internet) - some method of accessing
the internet
compression
- reduction of file size by coding its
information
CPSR
- US organisation Computer
professionals for social responsibility
(in use of networks)
cyberspace
- the electrical and electronic (as
opposed to face-to-face) medium of
human activity (personal communication,
property, services ). e.g. telephone,
computer networks
data
protection - protecting computerised
information about persons from
unauthorised access
data
security - protecting computerised
information from copying, theft or
damage.
EFF
- Electronic Frontier Foundation.
Organisation concerned with social,
legal, ethical issues of cyberspace
electronic
publishing - distribution of digital
information by computer disk or network
email
- electronic mail. A message from one
username to another on the same or
different internet computer. Text,
possibly with attached files.
emoticon
- a short sequence of text characters
used to indicate emotion in a text
message, usually representing a face
when viewed horizontally. e.g. :-)
encryption
- coding a message before transmission
to prevent unauthorised reading.
file
- a named unit of information of
computer backing store
filename
- the name of a file
file
type - the internal format, especially
lext (ASCII) or binary
flaming
- angry messages between people who
misunderstand each other
ftp
- file transfer protocol, a program for
copying a file from on computer to
another
FQDN
- fully qualified domain name, the
numerical version of the name of an
internet computer
gopher
- a system of access to files on
internet computers (servers) appearing
as menus (gopherspace); the program
accessing it; 'go for' (this, that)
hacking
- unauthorised entry of a computer
system
Hytelnet
- a program giving access to internet
services through a menu system.
ILO
- International Labour Organisation
internet
name of a computer - its address in
standard format: machine.domain
e.g. cent1.lancs.ac.uk
internet
computer - a computer able to use
TCP/IP to transfer information to other
computers, especially large computers
permanently connected. Many have the
UNIX operating system.
ISDN
- integrated servcies digital network.
a digital connection between two
computers possible over standard
telephone lines. Currently providing
128Kb/sec capacity.
IRC
- internet relay chat, simultaneous
text messaging between several people
using the internet
jughead
- a program searching files on a
particular gopher server
LAN
- local area network. A high speed
network in a building or site.
modem
- modulator/demodulator, hardware ( a
card inside a computer, or an external
box) allowing a normal telephone line
to be used to connect to another
computer also with a modem. Digital
data is converted into audio pulses to
pass through the telephone system, then
reconverted.
MUDS
- multi-user dungeons, bulletin boards
used for playing fantasy games.
listserv
- a program maintaining lists of
usernames to be sent email. Each list
concerns a topic. Members of list
receive all messages from other
members.
mailbomb
- inundating a computer with email.
NIIAC
- U.S. National Information
Infrastructure (Superhighway) Advisory
Committee
netiquette
- a set of rules/norms for behaviour of
persons on the internet. net-etiquette.
OFTEL
- office of telecommunications, UK
official organisation
online
- happening only across computer
networks.
operating
system - the low level software
enabling hardware to function including
maintenance of files. e.g UNIX, MS-DOS
password
- the secret sequence of characters
authorising access of a username
PC
- personal computer. Often an IBM PC
compatible with DOS or Windows
operating system, also e.g. an Apple
Mac
person
- a human using one or more internet
computers, with a real name e.g.
Stephen Bostock
society
- all persons and organisations in a
country, or all countries in the global
society
SLIP
- a connection to an internet computer
for small computers connected
occasionally. For PCs to connect to an
internet computer providing an access
point.
subdirectory
- a logical part of the file store,
organised hierarchically
talk
- a unix program allowing two people to
exchange simulataneous text messages on
UNIX computers on the internet
telnet
- a program enabling a session on a
remote internet computer, as if it were
a local computer.
teleworking
- also telecommuting, doing paid work
or part of one's job by communicating
through computer networks rather than
physically travelling and meeting.
teletraining
- training delivered over computer
network, to the desktop computer.
teletrade
- doing business over computer
networks, marketing, buying, selling,
delivering.
TCP/IP
- transfer carrier protocol/internet
protocol. The rules determining how
packets of data are moved between
internet computers.
terminal
- a connection to an internet computer
where the local machine (keyboard and
screen) has no processing power but
provides intput and output to a distant
computer
trickle
- a program to regularly update a copy
of a file from an anonymous ftp source.
URL
- Universal Resource Locator, the name
of a computer, service or file on the
internet, with its type.
usenet
- a system of thousands of text
conferences distributed globally to
internet computers, normally readable
and writable by all. Organised
hierarchically. e.g.
'comp.org.eff.talk' is a discussion
group for the organisation EFF.
username
- the official code name for one person
on one internet computer e.g. csa28
veronica
- a program searching files in the
gopher system
virus
- a computer program which replicates
itself and is passed between computers
via discs or networks, usually also
causing damage to stored information.
Created for this purpose.
WAIS
- wide area information server
('ways'), searches indexes of files
available by anonymous ftp.
WWW-
World Wide Web - a system of files on
internet computers linked as hypermedia
Essentially, arguing that knowledge representation should not be software tool-driven, or it shoe-horns a domain into a representation method not appropriate.
Analysis and elicitation very intertwined. Analysis done by SAAGS method, elicitation methods well established.
They should use
1. mediating represenatations (esp. concept maps) which can then be transformed (effectively by analysis) into
2. intermediate repesentations ( semantic networks) which can then be synthesised by simple union into a set of intermediate representations, which can then be turned into
3. code level represenations (conceptual graphs, calculus, prolog).
List of top level characteristics of domains:
1. structure
2. purpose
(these are the traditional ones, but they are often not sufficient to allow maintenance of knowledge model as it changes - this needs additionally some of those below)
3. Theory
4. Metaphors used in the domain * (and what aspects of the metaphors)
5. meta-theoretical constraints (time space, causality)
6. relationships with other domains
7. History or the domain
p.260, bottom.
paper models from analysis are:
vocabulary (transcript minus common words)
global metaphors
concept map of related domains (showing where metaphors come from) links with other subjects
sortal types (= concepts+examples) plus their properties and their relationships
|
Keele University Home | Learning Technology Home | email Stephen Bostock Stephen Bostock asserts his moral right to be acknowledged as the author of documents on this site, unless another author is identified. Copyright remains with Keele University, or the author. The views expressed in this site are those of the author and do not necessarily represent those of Keele University.Last edited: 04 Jul 2005 Best viewed in IE6 |