scholarly journals ECDL testavimo sistemos naudojimo patirtis ir tobulinimo galimybės

2008 ◽  
Vol 42 (43) ◽  
pp. 103-107
Author(s):  
Stasys Maciulevičius ◽  
Tomas Lygutas

Lietuviškoji ECDL testavimo sistema sukurta 2000 metais, o pirmieji testai užfiksuoti 2000 metų gruodį. Tad per praėjusius daugiau nei šešerius metus sukaupta nemaža šios sistemos naudojimo patirtis, leidžianti apibendrinti kai kuriuos testavimo dalykus, nurodyti sistemos trūkumus ir numatyti jos testavimo tolesnio tobulinimo poreikius ir galimybes. Straipsnyje analizuojami testavimo sistemos funkcionavimo ir kokybės užtikrinimo klausimai, galimybės pereiti prie testavimo taikomųjų programų aplinkose. Perėjimas siejamas su testuojamojo atliekamų veiksmų įvertinimu, klausimų ar užduočių formulavimu.Experience of using ECDL testing system and possibilities of its improvementStasys Maciulevičius, Tomas Lygutas SummaryLithuanian ECDL test engine was created in year 2000. Since the creation more than 138 000 tests were taken, more than 26 000 ECDL and ECDL start certificates were issued. The experience of more than 6 years allows to generalize on certain aspects of testing process, enables to envisage its drawbacks and possible development strategies in the future. This article overviews quality standards of ECDL testing, analyses aspects of current ECDL test engine and discusses the drawbacks of current testing technology, relates these with issues and steps required to make a transition to a new type in-application testing, mainly – evaluation of user actions, formulation of tasks.

Author(s):  
Yubao Chen ◽  
Jiong Zheng ◽  
Weijian Luo

As a conventional NDT method, eddy Current testing (ET) has been greatly developed both in instrumentation and technique in recent years. Remote Field Eddy Current Testing (RFET) is a representation of this advancement. The principle of RFET and the composition of the testing system are detailedly discussed in this paper. And then, its application in the ferromagnetic heat exchanger tubes is described simply.


2013 ◽  
Vol 12 (01) ◽  
pp. E
Author(s):  
Nico Pitrelli

In the next few months, JCOM will undergo relevant changes. A new owner will take charge of its editorial management and define new development strategies. This important transition is a good opportunity to take stock of the past few years and to devise a new type of science communication research journal.


2018 ◽  
Vol 16 (5) ◽  
pp. 83-90 ◽  
Author(s):  
Hee-Joong Hwang ◽  
Jung Wan Lee ◽  
Dong-Ho Kim ◽  
Jong-Ho Lee ◽  
Byung-Goo Kim ◽  
...  

2020 ◽  
pp. 36-43 ◽  
Author(s):  
Olga Abaeva

The article describes the experience of conducting a theoretical cycle for medical University students in isolation of students and teachers. The author analyzes a survey of students about their studies and life in quarantine, as well as teachers about the difficulties of organizing distance learning. The author concludes that this situation is a good forced experience for the organization of the educational process in the future.


2012 ◽  
Vol 487 ◽  
pp. 805-809
Author(s):  
Jun Ma ◽  
Dong Hua Guo

this thesis discusses the main testing technologies at home and abroad relating to the glass bead refractive index, analyses the research emphases relating to the glass bead refractive index testing technology at present and point out the future research trend.


2013 ◽  
Vol 651 ◽  
pp. 198-203
Author(s):  
Xiu Ling Wang ◽  
Li Ying Yang ◽  
Shou Ren Wang

It is significant and necessary to carry out the research and development of self-lubricating bearing. The current study of metal matrix self-lubricating bearing materials is summarized. A new type of high temperature self-lubricating Ti-Al alloy bearing materials is proposed. It is light, anti-friction, anti-corrosion and high temperature resistance (600 °C). The future trend is introduced in the end of this paper.


2021 ◽  
Vol 15 ◽  
Author(s):  
Yanling Zhao ◽  
Huanqing Zhang

Background: Bearing testing machine is the key equipment for bearing design, theoretical research and improvement, and it plays an important role in the performance of bearing life, fatigue, vibration and working temperature. With the requirements of aerospace, military equipment, automobile manufacturing and other industrial fields of the bearing are becoming higher and higher. There is an urgent need for high-precision and high-efficiency bearing testing machines to monitor and analyze the performance of bearings. Objective: By analyzing the recent patents, the characteristics and existing problems of the current bearing testing machine are summarized to provide references for the development of bearing test equipment in the future. Methods: This paper reviews various representative patents related to the third generation bearing testing machines. Results: Although the structure of bearing testing machines is different, the main problems in the structure and design principle of bearing testing machine have been summarized and analyzed, and the development of trend and direction of the future bearing testing machine have been discussed. Conclusion: Bearing testing machines for health monitoring of bearing life cycle is of great significance. The current bearing testing machine has basically achieved the monitoring and analysis However, due to the emergence of new types of bearings, further improvement is still needed. With the development of testing technology towards intelligent and big data-driven direction, bearing testing machine is moving towards the type of cloud computing and large-scale testing.


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