Wyniki wyszukiwania - BazTech

1

Preparation of a Ferroelectric Liquid Crystal Electrolyte Solution

Ito T., Jo T., Dong J., Hayashi H., Goto H.

International Letters of Chemistry, Physics and Astronomy

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2015

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Vol. 46

1--8

EN

A ferroelectric liquid crystal was synthesised. We attempted electrochemical polymerisation in ferroelectric liquid crystal.

2

Decomposition and Approximation of Loopy Bayesian Networks

Dong J., Chen F., Huo Y., Liu H.

Fundamenta Informaticae

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2013

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Vol. 125, nr 2

135--152

EN

This paper proposes a new method, conditional probability table (CPT) decomposition, to analyze the independent and deterministic components of CPT. This method can be used to approximate and analyze Baysian networks. The decomposition of Bayesian networks is accomplished by representing CPTs as a linear combination of extreme CPTs, which forms a new framework to conduct inference. Based on this new framework, inference in Bayesian networks can be done by decomposing them into less connected and weighted subnetworks. We can achieve exact inference if the original network is decomposed into singly-connected subnetworks. Besides, approximate inference can be done by discarding the subnetworks with small weights or by a partial decomposition and application of belief propagation (BP) on the still multiply-connected subnetworks. Experiments show that the decomposition-based approximation outperforms BP in most cases.

3

Teaching Research on Cryptography in Computer Science and Technology Specialty

Sun Y., Dong J., Gou H., Wang L., Ran Z.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 5b

101-104

EN

With the speeding up of global information pace, the security of network information is becoming an increasingly serious problem. As the related course of information security, cryptography turns into a basic and important course of Computer Science and Technology Specialty in universities. Based on an intensive study of this course, this paper probes into the effective teaching method of cryptography as well as the selection of textbook. The paper begins from designing theoretic and experiment teaching model, and then puts these models into practice. Thirdly, the paper provides corresponding assessment means to these models. Lastly, the paper puts the models into practical teaching and they are turned out to be effective and be of reference value.

PL

W artykule omówiono metody uczenia kryptografii. Przedstawiono teoretyczne i eksperymentalne doświadczenia oraz zaproponowano praktyczne przykłady nauczania kryptografii.

4

Existence of positive solutions to BVPs of higher order delay differential equations

Shen J., Dong J.

Demonstratio Mathematica

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2009

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Vol. 42, nr 1

53-64

EN

The paper is concerned with the existence of positive solutions for the nonlinear eigenvalue problem with singularity and the superlinear semipositone problem of higher order delay differential equations. The main results are obtained by using Guo-Krasnoselskii's fixed point tbearem In cones. These results extend some of the existing literature.

5

Experimental study of the soil infiltration characteristics of a reclaimed site in Xuzhou mining area, pr China

Bexten J., Bian Z., Dong J., Otto F.

Górnictwo i Geologia

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2008

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T. 3, z. 4

5-18

EN

Subsurface coal mining causes subsidence of day ground below groundwater level. To restore these areas for agriculture, the areas have been or will be filled with waste material. The surface will be covered with one meter of loess. In this research project three different filled areas were analyzed: the first area was filled with wastes from coal mining and coal processing, the second area with ash from coal power plants and a third area with soil only (The soil-filled area was chosen as a standard without contamination from mining power plants). In the site investigations, physical parameters (such as ability of root penetration and conductivity) of the soil were researched. Infiltration and permeability of the soil and its sorption capacity were tested with a Guelph-Permeameter. Samples of soil and plants were taken from the sites and, with in-depth laboratory tests, the contaminant concentrations of plants and soils were determined. The question is whether the agriculture on these restored fields can supply the raw-materials for Chinese foodstuff production. This is the first investigation of possible contamination of plants with heavy metals and other contaminants. To ensure the safety of food, especially the heavy-metals contaminated soils are urged to remediate through stabilization or removal. The aim of this study was to carry out an investigation of the environmental comparability of waste materials from coal mining and coal processing, as well as ash from coal power plants.

PL

Podziemna eksploatacja górnicza powoduje obniżenie się terenu poniżej poziomu wód gruntowych. Aby odzyskać tereny pod uprawy rolnicze, obszary górnicze zostały lub zostaną poddane wypełnieniu (rekultywacji) odpadami kopalnianymi. Powierzchnia terenu zostanie pokryta jednometrową warstwą gleby lessowej. W ramach projektu przeanalizowano trzy różne tereny poddane procesowi wypełniania: pierwszy zawierał odpady z procesu produkcji i przeróbki węgla, drugi popiół z elektrowni węglowej, natomiast trzeci został wypełniony wyłącznie glebą (gleba użyta do wypełnienia została wybrana jako standard bez zanieczyszczeń pochodzących z elektrowni węglowych). W badaniach terenowych sprawdzano parametry fizyczne gleby (zdolność roślin do ukorzenienia i przewodność właściwą). Infiltracja gleby, przepuszczalność i zdolności sorpcyjne sprawdzono przyrządem pomiarowym Guelph-Permeameter. W czasie badań terenowych pobrano próbki gleb i roślin, następnie za pomocą testów laboratoryjnych oznaczono stężenia substancji zanieczyszczających rośliny i gleby. Jednakże, powstaje pytanie, czy działalność rolnicza prowadzona na rekultywowanych terenach może dostarczać bezpiecznych surowców do produkcji żywności w Chinach. Niniejszy projekt jest pierwszym badaniem, dotyczącym zanieczyszczenia roślin metalami ciężkimi i innymi substancjami. Aby zagwarantować bezpieczną żywność, gleby zawierające metale ciężkie muszą być rekultywowane poprzez stabilizację lub usunięcie. Celem niniejszej pracy było ustalenie efektywności środowiskowej (porównywalności ekologicznej) materiału odpadowego z procesu wydobycia i przeróbki węgla z popiołem z procesu spalania węgla w elektrowniach.

6

On new Ostrowski type inequalities

Liu W., Dong J.

Demonstratio Mathematica

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2008

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Vol. 41, nr 2

317-322

EN

In this short note, some new inequalities of Ostrowski type involving two functions and their derivatives for mapping whose derivations belong to Lp[a,b], p > 1 are established.

7

Generating new styles of Chinese strokes based on statistical model

Xu M., Dong J.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2007

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Vol. 11, No 1-2

129-136

EN

Chinese calligraphy is one of the most important Chinese arts: a form of entertainment as well as an embodiment of figurative thinking. In this paper, a statistical model-based approach to generating new styles of Chinese character strokes is proposed. Original calligraphy samples are aligned in a common co-ordinate frame and a training set consisting of landmarks is generated semi-automatically. The most significant features of the training set are extracted and a statistical model is built in order to generate strokes in new styles. The Bezier curve is used to fit the discrete contour data.