Jo Nov 11, 2021
Kim Haeng Son was born in Chongjin City, North Hamgyong Province on May 24, Juche 38(1949).
He has devoted his all to the education of the rising generation and scientific research for 46 years since Juche 64(1975), when he graduated from university.
He wrote 20 kinds of textbooks and reference books including Metal Welding, Welding Heat Procedure, Dissimilar Metal Welding, Materials for Pressurized Light Water Reactor and Welding and Six Language Vocabulary on Welding, and trained 7 Doctors and more than 20 Masters. By regenerating the large-scale bearing roll by means of deposition, he had the honour of receiving thanks from Chairman
He was awarded the title of academician in July, Juche 110(2021).
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Jo Oct 9, 2021
The research group led by Choe Chol Min, laboratory head at the Faculty of Materials Science and Technology succeeded in manufacturing a splint using AM (additive manufacturing) and is trying to make further achievements.
This light splint of good air permeability manufactured by FDM (fused deposition modeling) helps relieve patients from their burden, reduce complications like skin diseases to shorten the period of treatment.
Figure 1 shows the CT photograph of a patient. Figure 2 displays the model of a splint manufactured with Solidworks using its photograph. Figure 3 shows the arm of a patient who wore the above mentioned splint just after the day of operation.
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Jo Oct 5, 2021
The 12th National Symposium for Public Presentation of Hypotheses and Conceptions was held from September 13 to 17 by online meeting system under the sponsorship of the Central Committee of General Federation of Science and Technology of Korea.
Attended were lecturers, researchers, technicians, field engineers etc. from educational units, scientific research units and production units including
Among some 190 suggestions the essays “A multipolar reluctance motor for a direct drive ball mill” by An Se Gwang, researcher at the Faculty of Electrical Engineering, and “Combinatioin of traditional communication system and quantum communication system using wavelength division multiplexing” by O Ju Hyok, lecturer at the Faculty of Communication were proven excellent as they are in conformity with our specific conditions, original and of great economic significance.
In addition, several suggestions by the lecturers and researchers at KUT including Ri Il Gwang, laboratory head at the Faculty of Applied Chemical Engineering, Kim Kwang Il, laboratory head at General Assay Office and Ri Se Hyong, laboratory head at the Faculty of Automation Engineering were assessed to be of great value.
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Jo Oct 4, 2021
The National Sci-tech Symposium on Metallic Material was held from September 14 to 16 by online meeting system under the sponsorship of the Central Committee of General Federation of Science and Technology of Korea.
The subject was “Development of Metallic Material based on Domestic Resources”. The participants were lecturers, researchers, postgraduates, field engineers etc. from Kim Chaek University of Technology, Chongjin University of Mining and Metallurgy, Ferrous Metal Institute of the State Academy of Sciences, Hwanghae Iron and Steel Complex and other units.
The essay by Jang Hyon Chol, chief of institute at the Faculty of Materials Science and Technology “Effect of factors on the properties of Al2O3-ZrO2 composite ceramic liner by SHS Gravitational Process” was highly appraised as a great practical significance since he set forth the solutions to the scientific and technological problems arising in the improvement of the features of the inner surface of a steel pipe such as heat resistance and abrasion resistance etc. by relying on domestic materials.
In addition to this several essays presented from KUT were proved to be of value.
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Jo Oct 1, 2021
Kim Song Chol, researcher in the Faculty of Mining Engineering proposed the mathematical model and solution that reflects the fluid flow in the dual-porosity reservoir with an elastic outer boundary to consider the flow characteristics.
In reality where oil, gas and water resources are developed, it is general that the dual-porosity reservoirs have the characteristics of both fissility and porosity.
In the preceding research, the percolation model is considered to be ideal boundary, and not to be elastic boundary that reflects real state.
In his paper he plotted the percolation model of dual-porosity reservoirs with elastic outer boundary and obtained the solution in Laplace space by using the Laplace inverse.
Then, by applying the numerical inverse Stehfest Laplace transformation, he found the solution in real space and analysed the characteristics of flowing period.
This proposed mathematical model can enhance the correctness of the well-test analysis of dual porosity reservoir.
His paper “Analyzing fluid flow characteristics in a dual-porosity reservoir with an elastic outer boundary” is carried on the SCI magazine “Acta Geophysica”.
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Jo Sep 29, 2021
Ju Kwang Su, Head of Lab, IT Institute has proposed anew algorithm to construct probabilistic visual cryptography scheme (k, n, 0, 1, 1)-PVCS without pixel expansion for threshold access structures based on deterministic visual cryptography schemes (DVCS).
To the visual cryptography schemes are belonged the probabilistic visual cryptography scheme (PVS), deterministic visual cryptography schemes (DVDS), and random grid visual cryptography schemes (RGVCS)
He analysed the relationship between the PVCS and RGVCS in the probabilistic schemes and proved that the two schemes boiled down in its configuration method and characteristics and newly formulated the relationship between PVCS and RGVCS.
And he constructed the off-line PVCS, based on the new DVCS expansion method and proposed PVCS configuration method which is simple in algorithm and safe in information.
His paper “Research on Novel Construction of Probabilistic Visual Cryptography Scheme (k, n, 0, 1, 1)-PVCS for Threshold Access Structures” was carried on SCI Magazine “Theoretical Computer Science”.
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