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N. Milyaev OBJECT-ORIENTED APPROACH TO TECHNICAL OBJECTS DESCRIPTION



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N. Milyaev OBJECT-ORIENTED APPROACH TO TECHNICAL OBJECTS DESCRIPTION

Nowadays computer-aided technical writers (CATW) is a perspective, quickly developed branch of the software industry. Our CATW is destined for creation of technical documentation (such as manuals) based upon the object-oriented way of the technical device description.

The basic principle of this approach consists in following: technical object is described as a aggregate of its objects-constituents. For example, the TV set could be described through its buttons, levers, other controls. Afterwards manipulations which could be made upon every control are described. Also you should to describe results which these manipulations lead to and some conditions to be performed. For example, you can press the button until it clicks, and then the TV set will turn on. Preciseness of such description may vary, depending of complexity of the device to be described.

This could seemed to complex. However, we should noticed that devices of one type are usually consist of similar elements. Thus, once described such elements and putting it to repository, we can create afterwards a vide range of similar devices based upon such unified elements descriptions. We should only to correct some relations between these elements and their properties.

The given description then to be translated into the complete manual, simultaneously the structure of the text forming, grammatical agreement and numeration will be performed automatically.

The given approach, except the simplicity and quickness of manual creation, promises the following benefits: easy obtaining of multilingual manuals or manuals with different rubricating either by interface controls or by context of manipulation.




V.I. Smirnov, V.I. Abakumov, V.V. Zharkov, M.G. Ilyin MULTI-FUNCTIONAL VIRTUAL DEVICE

The virtual device is intended for reformation of the signals of inductive and whirlwind sensor types as well as for input of measurement results into a personal computer. The new scheme of the first transformer can shorten the time of one measurement. The characteristics of software feature are given.

Under the virtual device we understand a device, which electronic part is constructively placed inside a personal computer, but control is realised with the help of the keyboard or "mouse". The base of such devices is a special plate for collection of data. Adaptation of device to decision of concrete problem is produced with the help of corresponding software. Many virtual devices are used as multi-functional oscilloscopes, analysers of spectrum, generators of signals of the special form, wide-range radio.

Our device is intended for the decision of problems peculiar to inductive and whirlwind sensors (1). Constructively it is executed in the manner of the special plug-in card for PC and its special feature is an original primary converter scheme allowing to improve main metrological features of sensors. The plate is the completed device which uses the principle Plug & Play. The convenient graphic interface easily allows to set up the device for the decision of specific problems, to supervise process of measurements and to correct it as required. Software allows to decide the following problems:

- Parameter measurement of vibrations, rotating frequencies and values of real beating the objects of rotor-type. There is a procedure to numerical filtrations (windows Hanning, Hamming, Blackmann and other). Program is intended basically for the tasks of vibro-diagnostic of different sort of mechanisms and machines.

- Numerical multi-functional oscilloscoping. Program is intended for the measurement of parameters of quickly-flowing mechanical processes, for instance, striking influences. There is a procedure of wait mode, allowing to begin a process of measurements at a necessary moment of the time. There is a possibility of program changing a gain factor of signal, frequencies of request the sensors, amounts of simultaneously used measurement channels.

- Measurement of geometric sizes of objects by means of inductive sensors of osculation. Program is intended for operative checking of sizes of objects of the uncomplicated form on the test of output them for limits of tolerances.

- Measurement of dynamic viscosity of fluid and herd-like materials.

Determination of viscosity is produced on the base of registrations by means of inductive sensors of fading the turning fluctuations in the control ambience.

- Measurement of moisture of materials on the base of weight method, concludes in registrations of time dependency of mass of test under infrared drying. Four inductive force- measurement converters is use for the extension of dynamic range of measurements.


References


1.The inductive proximity sensor: Industry’s workhorse/ Eaton William// I and CS/-1989,-№9,c51-53.

V.V. Kornienko METHODIC OF DEVELOPMENT AND USING OF EDUCATIONAL COURSES OF DISTANCE EDUCATION

Next stages of development and inculcation of educational courses of distance education (DE) is suggesting:



  1. Choising of common methodical model of DE;

  2. Choising

  3. of mathematical model of course presentation;

  4. Developing of functional tools of system based on local area network (developing of informational materials, studying aims, tests);

  5. Adaptation system for global networking.

Next methodical models of DE are distinguished:

Model of distributed class – interactive telecommunication technologies is distributing course which count on for class or student’s group, allocated in different places. Learning is include synchronic communication – students and tutors must be in depended place in depended time. Usually students are studying at home or on workplace.

Model of independent training – there are is not necessary for students to be in depended place in depended time. Students have all necessary materials of studying. Students and tutors are interacting over electronic communication tools. There are no studies in classes, students are interacting with tutor and with other students sometime. Students gets information for education over printed materials, computer disks or video. They can learn it anywhere and anytime.

Model of open education + class – includes using printed materials and other methods which allows to learn a course with suitable speed in combination with interactive telecommunications for organizing conversation of students inside remote group. Content of course is distributing over printed materials, computer discs or video. Students can learn it anywhere and anytime, in group or personal. Materials is using more than one semester and different for each teacher. Periodically students and tutors are meeting for works in group, consultation, passing laboratory works, modeling and other application research.

By character of presentation of material we can select:



Linear scheme of presentation – it is characterizing by continuously presentation of study items with speed of learning by student.

Parallel net scheme of presentation – it is presentation in form of parallel net graph model. It allow to build formal description of pass condition between graph’s items independently for each graph’s transition. Use of this scheme is allow to make very flex model of studying of material.

It is important in this technology to produce of informational resources and interface system tools. Preliminary this system will be release in local area network. For developing of local model of DE, correctly tools of professional environment of remote education which invariant for studying course in MS Windows systems is dedicated this work.

For global models of DE can be used three ways of network connection: off-line, on-line and IP (internet Protocol). For a local networks is not necessary to talk about way of connection – workstation either it turned on or turned off. All able services in global models (e-mail, FTP, WWW, IRC –services) can be fully release in local models.

In present time is developing “Navigator of knowledge” in Institute of DE in join with CT department of UlSTU. This system allows:

- training on base of electronic methodical materials;

- making questionnaire, test, self- and control works of students;

- control for activity and successful training if students;

- append new courses and other materials in database.

In base of system is using model of independent training as methodical model. Producing of learning material as parallel net scheme allow to build formal description of pass condition between graph’s items. Independent defining of this rules for each graph’s transmission can allow to build flex studying model from strictly regimentation to independent training.

In base of technical realizing of system is client-server technology if Internet/intranet networking. This property allow to use this system in networks from local class network to global networking.



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