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8932. Semipermeable surfaces for non-smooth differential inclusions
- Creator:
- Leśniewski, Andrzej and Rzeżuchowski, Tadeusz
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- differential inclusions, semipermeable surfaces, and barrier solutions
- Language:
- English
- Description:
- We investigate the regularity of semipermeable surfaces along barrier solutions without the assumption of smoothness of the right-hand side of the differential inclusion. We check what can be said if the assumptions concern not the right-hand side itself but the cones it generates. We examine also the properties of families of sets with semipermeable boundaries.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
8933. Semiregularity of congruences implies congruence modularity at 0
- Creator:
- Chajda, Ivan
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- regularity, modularity, semiregularity, and modularity at 0
- Language:
- English
- Description:
- We introduce a weakened form of regularity, the so called semiregularity, and we show that if every diagonal subalgebra of $\mathcal A \times \mathcal A$ is semiregular then $\mathcal A$ is congruence modular at 0.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
8934. Semisimplicity and global dimension of a finite von Neumann algebra
- Creator:
- Vaš, Lia
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- finite von Neumann algebra, algebra of affiliated operators, semisimple ring, and global dimension
- Language:
- English
- Description:
- We prove that a finite von Neumann algebra A is semisimple if the algebra of affiliated operators U of A is semisimple. When A is not semisimple, we give the upper and lower bounds for the global dimensions of A and U . This last result requires the use of the Continuum Hypothesis.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
8935. Senekovo pojetí hněvu v díle jezuitského dramatika Karla Kolčavy
- Creator:
- Pauerová, Eva
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- Seneca, asi 4 př. Kr.-65 po Kr, Kolčava, Karel, 1656-1717, jezuitské divadlo, tragédie, emoce, hněv, Jesuit theater, tragedies, emotions, anger, 8, and 94(437)
- Language:
- Czech and English
- Description:
- Emotions and passions, especially the negative ones, played a major role in Seneca’s writing: the anger became the object of his philosophical treatise De ira and prevailed also in his tragedies. Seneca was probably the most important model for jesuit playwrigts which implies the question how these authors worked with his conception of anger and rage as destructive emotions, in which measure they took it over or changed it. Jesuit playwrights are represented here by Karel Kolčava whose plays are the only ones published as collected works during his life. In addition, there are (also published) Kolčava’s didactic letters, which gives us the opportunity to compare his theoretical view of anger with the Seneca’s one in the first part of the article. The realization of these conceptions is then observed on a few examples taken from the respective plays of both authors. Finally a special attention is paid to female characters in rage who are so important in Seneca’s tragedies and who can be found in Kolčava’s plays although women were not welcome on the jesuit stage even as characters., Eva Pauerová., and Obsahuje bibliografické odkazy
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
8936. Sensitivity analysis of a blade couple under rotation
- Creator:
- Byrtus, Miroslav, Hajžman, Michal, and Zeman, Vladimír
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- sensitivity analysis, friction damper, blades, bladed disk, and harmonic balance method
- Language:
- English
- Description:
- The aim of the paper is to show the influence of design parameters on the suppression of rotating blade vibration. The derivation of nonlinear mathematical model of a blade couple mutually connected by a friction element is summarized. After that, the linearization of the mathematical model is performed by harmonic balance method. The linearized model is used for sensitivity analysis of real and imaginary parts of eigenvalues in the course of rotation and sensitivity analysis of stead-state response with respect to the design parameters of internal friction coupling. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
8937. Sensitivity analysis of gearbox torsional vibrations
- Creator:
- Hajžman, Michal and Polach, Pavel
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- flexible shafts, mesh gear, modal analysis, eigenfrequencies, resonance, and tuning
- Language:
- English
- Description:
- The paper deals with the modelling of a real gearbox used in cement mill applications and with the sensitivity analysis of its eigenfrequencies with respect to design parameters. The torsional model (including a motor and couplings) based on th finite element method implemented in an in-house MATLAB application is described. The sensitivity analysis of gearbox eigenfrequencies is performed in order to avoid possible dangerous resonance states of the gearbox. The parameters chosen with respect to the sensitivity analysis are used for tuning the gearbox eigenfrequencies outside resonance areas. Two approaches (analytical and numerical) to the sensitivity calculation are discussed. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
8938. Sensitivity and Specificity of Bioassay of Estrogenicity on Mammary Gland and Uterus of Female Mice
- Creator:
- Josef Škarda
- Format:
- print, bez média, and svazek
- Type:
- article, studie, model:article, and TEXT
- Subject:
- Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, human physiology, Bioassay, Estrogenicity, Mammary gland, Uterus, Female micey, 14, and 612
- Language:
- English
- Description:
- a1_Young intact (18 days of age) and adult ovariectomized (OV-X, ovariectomized between 21 to 24 days of age) C3H/Di mice were used to measure the estrogenicity on the basis of the growth response of mammary epithelial structures and weight of the uterus. The percentage area of the mammary fat pad occupied by mammary epithelial structures was progressively increased by 17ß estradiol from dose 0.001 µg.d-1. The maximum effective dose of estradiol was 0.01 µg.d-1 and the dose 10 µg.d-1 of estradiol decreased mammary size to control levels (inverted-U-shaped dose-response curve). Progesterone alone progressively stimulated mammary growth in young intact females from dose 125 µg.d-1, in adult OV-X animals from dose 1000 µg.d-1. Both in young intact and adult OV-X animals, uterine weight progressively increased during estradiol treatment. Progesterone alone had no effect on uterine weight in young intact animals; in adult OV-X animals, uterine weight was increased starting from dose 250 µg.d-1. Progesterone acted synergistically with estradiol to produce higher mammary growth than that in females treated with estradiol alone. The effects of a combination of estradiol plus progesterone in the mammary gland were mimicked by norethindrone acetate and inhibited by cortisol in both young intact and adult OV-X animals. Testosterone inhibited estradiol plus progesterone stimulated growth of mammary gland only in OV-X animals, but stimulated uterine weights in both young intact and adult OV-X animals. Spleen weight and size of mammary lymph nodes were not affected by estradiol, progesterone, norethindrone acetate or testosterone, but were decreased by cortisol. Cortisol also decreased the percent area of the mammary fat pad occupied by mammary epithelial structures, but had no effect on weight of the uterus. These results show that bioassay of estrogenicity in females is not specific., a2_Mammary and uterine growth is stimulated not only by estrogens but also by progesterone and testosterone, respectively. ., J. Škarda., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
8939. Sensitivity and Specificity of the Bioassay of Estrogenicity in Mammary Gland and Seminal Vesicles of Male Mice
- Creator:
- Josef Škarda
- Format:
- print, bez média, and svazek
- Type:
- article, studie, model:article, and TEXT
- Subject:
- Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, human physiology, Bioassay, Estrogenicity, Male, Mammary gland, Seminal vesicles, 14, and 612
- Language:
- English
- Description:
- a1_Young intact (18 days old) and adult castrated males of CBA and C3H/Di mice were used for measuring the estrogenicity on the basis of growth response of mammary epithelial structures and the weight of seminal vesicles. It was demonstrated that heavier young males had disproportionally heavier seminal vesicles (sex steroid-responsive organs) than small animals at day 33 of age (that is on the day when experimental animals were killed and organs dissected). However, the weight of the spleen (sex steroid-nonresponsive organ) was proportionally related to body weight. To minimize variability in hormone responsiveness, all animals were weighed at the age of 18 days and only males weighing 8±1 g were used for hormone treatment. The percentage area of mammary fat pad occupied by mammary epithelial structures was progressively increased by 17ß estradiol from dose 0.01 µg.d-1. The maximum effective dose of estradiol was 0.1 µg.d-1 and dose 10 µg.d-1 of estradiol decreased mammary size to control level (inverted-U-shaped dose-response curve). Progesterone alone stimulated mammary growth only in high doses (500 µg.d-1 and higher) in young intact males, but had no effect on mammary growth in adult castrated animals. In young intact males, estradiol alone, or progesterone alone decreased the weight of seminal vesicles. No such inhibitory effect of these hormones was noted in adult castrated males. Progesterone acted synergistically with estradiol to produce higher mammary growth compared to that in males treated with estradiol alone. In the presence of progesterone seminal vesicles weight was decreased by estradiol given in such low doses as 0.001 µg.d-1 of estradiol, which is 10 times lower than that effective in animals treated with estradiol alone. On the other hand, in the adult castrated males a combination of estradiol plus progesterone stimulated seminal vesicles weight., a2_The effects of a combination of estradiol plus progesterone in the mammary gland were mimicked by norethindrone acetate (a synthetic steroid exhibiting progestantial and estrogenic activities) and inhibited by both testosterone and cortisol. Estradiol, progesterone, norethindrone acetate, or testosterone did not affect spleen weight and size of mammary lymph nodes. However, cortisol significantly decreased not only spleen weights but also size of mammary lymph nodes. These results show that simultaneous evaluation of mammary gland growth, seminal vesicles, and the spleen weight in the same animal is suitable for bioassay of estrogenicity as well as for detection of androgenic and antiandrogenic activities., J. Škarda., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
8940. Sensor based navigation of autonomous mobile robot
- Creator:
- Singule, Vladislav, Ehrenberger, Zdeněk, Březina, Tomáš, and Houška, Pavel
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- autonomous mobile robot, path planning, and odometric sensor
- Language:
- English
- Description:
- This paper is concentrated on a reactive sensor - based omnidirectional motion mode in in-door robot surrounding. A high accuracy dead - reckogning and obstacle avoidance of the robot is acquired. The method supposes the use of odometer robot means. The model assumes that the wheel distance measurement errors are random zero means white noise. Algorithms developed will be implemented within a generic SW architecture and used on ‘OMR III‘ experimental robot. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public