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6192. Diagnosing breast masses using ICA and non-image features

Creator:
García-Manso, A., Gallardo-Coballero, R., García-Orellana, C. J., González-Velasco , H. M., and Macías-Macías , M.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Breast cancer diagnosis, Independent Component Analysis, malignant breast masses, DDSM, and Feature extraction
Language:
English
Description:
One of the most challenging task for Computer Aided Diagnosis (CADx) systems designed to diagnose breast cancer is to be able to differentiate between benign and malignant masses. In this work we present a study made as part of an ongoing project whose aim is to develop an image-based CADx system for diagnosing mass lesions. Our system is based on image-based and non-image features. Image-based features are obtained using Independent Component Analysis (ICA), and both age and mammogram density are tested as non-image features. Performance results are provided for all the valid masses in a public database, obtaining a statistically significant improvement by adding age to image-based features. However, the addition of the density of the mammogram does not improve the system performance.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

6193. Diagnosis on a sliding window for partially observable Petri nets

Creator:
Chouchane, Amira and Declerck, Philippe
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
diagnosis, state estimation, partially observed Petri net, sliding window, and integer linear programming
Language:
English
Description:
In this paper, we propose an algebraic approach to investigate the diagnosis of partially observable labeled Petri nets based on state estimation on a sliding window of a predefined length h. Given an observation, the resulting diagnosis state can be computed while solving integer linear programming problems with a reduced subset of basis markings. \blue{The proposed approach consists in exploiting} a subset of h observations at each estimation step, which provides a partial diagnosis relevant to the current observation window. This technique allows a status update with a "forgetfulness" of past observations and enables distinguishing repetitive and punctual faults. The complete diagnosis state can be defined as a function of the partial diagnosis states interpreted on the sliding window. As \blue{the} analysis shows that some basis markings can present an inconsistency with a future evolution, which possibly implies unnecessary computations of basis markings, a withdrawal procedure of these \blue{irrelevant} basis markings based on linear programming is proposed.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6194. Diagnostic methods of combustion in the fluid bed boilers

Creator:
Bohumír Čech, Zdeněk Kadlec, and Jan Matoušek
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, uhlí, měření teploty, měření průtoku, coal, temperature measurement, flow measurement, fluid bed boiler diagnostics, pressure measurement, solid particles concentration, gas concentration, probes for measuring, 7, and 551
Language:
English
Description:
The articles gives a summary of measurement units that are used for diagnostic measurements of fluid boilers combustion channels. During the verification process VŠB-TU Ostrava designed and tested various types of probes for temperature and velocity measurements, off-take of both gaseous samples of waste gases and solid particles samples. Taken results gives more detailed information about fluid lyer behaviour for various fluid bed boiler types. Moreover they can be of use in case of boiler modifications or boiler operation improvements. This article is based on the project GA 617 50 11 solving - "Combine combustion of coal and biomass in fluid bed boilers"., Bohumír Čech, Zdeněk Kadlec and Jan Matoušek., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6195. Diagnostic significance of urinary thiodiglycolic acid as a possible tool for studying the role of vitamins B12 and folates in the metabolism of thiolic substances

Creator:
Tomáš Navrátil, Miroslav Petr, Zdeňka Šenholdová, Kamila Přistoupilová, Tomáš Ivan Přistoupil, Michael Heyrovský, Daniela Pelclová, and Eva Kohlíková
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Biochemie. Molekulární biologie. Biofyzika, fyziologie, homocystein, moč, voltametrie, vitaminy skupiny B, foláty, human physiology, homocysteine, urine, voltammetry, vitamin B complex, folates, betain, kyselina thiodiglykolová, betaine, thiodiglycolic acid, 2, and 577
Language:
English
Description:
We have found that the determination of thiodiglycolic acid (TDGA) in urine may help to characterize metabolic imbalance of substances participating in methionine synthesis, which leads to hyperhomocystinuria. From the metabolic scheme, based on a proper combination of known facts, we attempted to theoretically explain and to demonstrate the possibilities of TDGA formation via different ways of homocysteine transformation. This scheme was used in evaluating the results obtained by testing urine of a woman suffering from impaired function of methionine synthase reductase (CblE type of homocystinuria). The amount of TDGA excreted in her morning urine was very sensitive to the changes in her treatment based upon a combination of N5-formyl tetrahydrofolate, betaine and vitamin B12. Vitamin B12 given in the evening either alone or together with betaine increased the TDGA excretion in the morning urine up to ten times. On the other hand, in the absence of vitamin B12, betaine in combination with N5-formyl tetrahydrofolate hindered the appearance of TDGA in the morning urine. Generally, the determination of TDGA in urine of an appropriately pretreated patient may indicate the degree of success of the treatment., T. Navrátil, M. Petr, Z. Šenholdová, K. Přistoupilová, T. I. Přistoupil, M. Heyrovský, D. Pelclová, E. Kohlíková., and Obsahuje bibliografii a bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6197. Diagnostické meranie vibrácií pri hodnotení vplyvu opotrebenia fokusačnej trubice počas hydroabrazívneho delenia hliníka

Creator:
Hloch, Sergej and Valíček, Jan
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
abrasive waterjet cutting, vibration analysis, focusing, tube wear, hydroabrazívne delenie, vibračná analýza, opotrebenie, and fokusačná trubica
Language:
Czech
Description:
Abrasive waterjet cutting monitoring of materials in recent years has become an important area of research. The article deals with potential applications vibration analysis at technological process of cutting of material. In order to provide the vibration analysis at abrasive waterjet cutting, have been carried out experiments to measure vibration and ultrasonic emissions in order to ascertain the context of the parameters measured vibrations with the technology division of aluminium. The main challenge is finding the existence of the link between the focusing tube wear and vibration. and Monitorovanie hydroabrazívneho delenia materiálov hydroabrazívnym prúdom sa v posledných rokoch stalo dôležitou oblasťou výskumu. Článok sa zaoberá možnosťou aplikácie vibrodiagnostiky technologického procesu delenia materiálu. Za účelom zistenia vibrácií pri hydroabrazívnom delení, boli vykonané experimenty zamerané na meranie vibrácií a ultrazvukovej emisie s cieľom zistenia súvislosti meraných parametrov vibrácií s technologickými podmienkami delenia hliníka. Hlavnou úlohou je zistenie existencie súvislosti medzi opotrebovaním fokusačnej trubice a vibráciami.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6198. Diagonal reductions of matrices over exchange ideals

Creator:
Chen, Huanyin
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
exchange ring, ideal, and related comparability
Language:
English
Description:
In this paper, we introduce related comparability for exchange ideals. Let $I$ be an exchange ideal of a ring $R$. If $I$ satisfies related comparability, then for any regular matrix $A\in M_n(I)$, there exist left invertible $U_1,U_2\in M_n(R)$ and right invertible $V_1,V_2\in M_n(R)$ such that $U_1V_1AU_2V_2= \operatorname{diag}(e_1,\cdots ,e_n)$ for idempotents $e_1,\cdots ,e_n\in I$.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

6199. Dialektika bez syntézy. Myšlení Pierra-Josepha Proudhona

Creator:
Pelikán, Čestmír
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Pierre-Joseph Proudhon, anarchism, property, justice, federalism, and mutualism
Language:
Czech
Description:
Pierre-Joseph Proudhon is generally regarded to be one of the founders of anarchism. Anarchism as a political current is most often characterized by its values ​​and attitudes, but the research into it seldom considers how these values ​​and attitudes are connected to the modes of thinking and argumentation of its most prominent representatives. Proudhon is a good example of this. His extensive and varied body of work illustrates the connection between the emancipatory ideals of anarchism and the complexity and polysemy of the non-authoritarian way of thinking. The article attempts to demonstrate his methods of thinking with several examples that treat such basic themes of his work as the question of justice, the problem of property, mutual support (i.e. mutualism) and the political organization of society along federated lines. The article also points to the ambiguous acceptance of Proudhon’s work by individual anarchist currents and also to certain limits to his way of thinking that result from his acceptance of certain problematic starting points. and Pierre-Joseph Proudhon bývá pokládán za jednoho ze zakladatelů anarchismu. Anarchismus jako politický proud je zpravidla charakterizován svými hodnotami a postoji, ovšem málokdy se při jeho zkoumání uvažuje o tom, jak tyto hodnoty a postoje souvisejí se způsoby myšlení a argumentace jeho výrazných představitelů. Proudhon je však právě v tomto ohledu dobrým příkladem. Jeho rozsáhlé a rozmanité dílo ilustruje spojitost mezi emancipačními ideály anarchismu a komplexností a mnohovýznamovostí neautoritativního způsobu myšlení. Stať se pokouší demonstrovat Proudhonovy způsoby myšlení na několika příkladech zpracování takových základních témat jeho díla, jako je otázka spravedlnosti, problém vlastnictví, vzájemné podpory čili mutualismu, či federativního politického uspořádání společnosti. Poukazuje též na nejednoznačné přijetí Proudhonova díla jednotlivými anarchistickými proudy a také na jisté meze jeho způsobu uvažování, vyplývající z přijetí určitých problematických východisek.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

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