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2. Dynamic deformations and stresses of beams connected by damping element
- Creator:
- Půst, Ladislav
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- beam vibration, damping, modes of forced vibration, and stress in roots
- Language:
- English
- Description:
- Dynamic properties of two similar, parallel, one-sided clamped beams connected by a damping element on their free ends are analytically and numerically investigated. A harmonic motion excites the end of one of these beams. The main attention is given to the ascertaining of response curves deflection shapes of beams and their stresses in roots at different orientations and levels of damping force. and Obsahuje seznam literatury
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. Initial data stability and admissibility of spaces for Itô linear difference equations
- Creator:
- Kadiev, Ramazan and Simonov, Pyotr
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Itô functional difference equation, stability of solutions, and admissibility of spaces
- Language:
- English
- Description:
- The admissibility of spaces for Itô functional difference equations is investigated by the method of modeling equations. The problem of space admissibility is closely connected with the initial data stability problem of solutions for Itô delay differential equations. For these equations the p-stability of initial data solutions is studied as a special case of admissibility of spaces for the corresponding Itô functional difference equation. In most cases, this approach seems to be more constructive and expedient than other traditional approaches. For certain equations sufficient conditions of solution stability are given in terms of parameters of those equations.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
4. Three new species of Echinobothrium (Cestoda: Diphyllidea) from Indo-Pacific stingrays of the genus Pastinachus (Rajiformes: Dasyatidae)
- Creator:
- Kuchta, Roman and Caira, Janine N.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- Borneo, Echinobothrium nataliae, Echinobothrium reginae, Echinobothrium vojtai, hook formula, Madagascar, and Macrobothridium
- Language:
- English
- Description:
- Three new species of diphyllidean cestodes are described from stingrays of the genus Pastinachus from the Indian and Pacific Oceans. All three new species differ from all but 10 of the 36 valid species of Echinobothrium van Beneden, 1849 in that they bear lateral hooklets arranged in a continuous band across each lateral surface of the rostellum joining the groups of dorsal and ventral apical hooks, rather than arranged in distinct dorsal and ventral groups, on each side of the apical hooks. Echinobothrium nataliae sp. n. ex Pastinachus solocirostris off Borneo differs from other relatives in the following combination of characters: number of spines in each column on the cephalic peduncle, number of lateral hooklets and number of apical hooks. Echinobothrium reginae sp. n. ex Pastinachus cf. sephen off Madagascar differs from all congeners in the following combination of characters: number of hooklets and number of spines on the cephalic peduncle. Echinobothrium vojtai sp. n. from an undescribed species of Pastinachus off Borneo differs from its congeners in the following combination of characters: number of hooklets, number of apical hooks and number of spines in each column on the cephalic peduncle. The hook formula was modified to accommodate species with lateral hooklets arranged in a continuous band as follows: {(LH) AH(A)/AH(B)}, where (LH) is the total number of lateral hooklets in a band. A table of all nominal species of Echinobothrium, showing their taxonomic status, type host and locality, number of peduncle spines in a column and hook formula, is presented. Macrobothridium djeddensis and Macrobothridium sinensis are transferred to Echinobothrium. In addition, Echinobothrium deeghai is considered as a species inquirenda.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public