FIRST RECORD OF MARASMIUS LIMOSUS AND PHOLIOTA CONISSANS (BASIDIOMYCOTA) IN BULGARIA

The paper provides information on the first finding of Marasmius limosus Quél. and Pholiota conissans (Fr.) M. M. Moser in Bulgaria. Both fungi were found as saprotrophs on decaying leaves and stems of Typha angustifolia L. in the karstic swamp Dragomansko Blato. Morphological data obtained by light microscopy are provided for both species. The easy recording of both species in the swamp in the middle of October allows the suggestion for further autumn searching for macromycetes in wetlands

The library of the models of the typical elements and modules of the hydraulic system devices

Розглянуто підхід до формування бібліотеки моделей для моделювання робочих процесів в пристроях гідравлічних систем. Набір типових елементів отримано шляхом аналізу принципових схем гідравлічних пристроїв різного призначення. Моделі типових елементів об’єднуються у моделі модулів. У якості основи для побудови модулів використано структуру процесу отримання функції. Моделі гідравлічних пристроїв, які забезпечують виконання декількох функцій будують шляхом об’єднання модулів. Врахування ієрархічних відносин між модулями дозволило скоротити їх загальну кількість. Розроблений набір елементів та модулів представлено у формі бібліотеки типових моделей. Застосування бібліотеки дозволяє скоротити терміни побудови моделей гідравлічних пристроїв за рахунок використання моделей типових компонентів, багаторазового використання однотипних компонентів, використання модулів з набором властивостей, які максимально відповідають пристрою, що моделюється.The approach of forming a library of models for modeling workflows in the hydraulic systems is considered. A set of standard elements is obtained by the analysis of principal schemes of various hydraulic devices. Models of typical elements are combined in the model modules. The structure of the process functions is used as a basis for the construction of modules. The models of the hydraulic devices that provide several functions are constructed by combining modules. Accounting for the hierarchical relationship between the modules reduces their total number. Developed a set of elements and modules are presented in the form of a library of standard models. The library application reduces time building of the hydraulic device models. This is a consequence of the several times using of models of typical components and the using of modules with a set of properties that best meet simulated devices.Рассмотрен подход к формированию библиотеки моделей для моделирования рабочих процессов в устройствах гидравлических систем. Набор типовых элементов получен путем анализа принципиальных схем разнообразных гидравлических устройств. Модели типовых элементов объединяются в модели модулей. В качестве основы для построения модулей применена структура процесса получения функций. При этом модели гидравлических устройств, обеспечивающих выполнение нескольких функций, строятся путем объединения модулей. Учет иерархических отношений между модулями позволил уменьшить их общее количество. Полученный набор элементов и модулей представлен в форме библиотеки типовых моделей. Применение библиотеки позволяет сократить сроки построения моделей гидравлических устройств за счет использования моделей типовых элементов и модулей, многократного использования однотипных компонентов, использования модулей с набором свойств, максимально соответствующих моделируемому устройству

Meissner phases in spin-triplet ferromagnetic superconductors

We present new results for the properties of phases and phase transitions in spin-triplet ferromagnetic superconductors. The superconductivity of the mixed phase of coexistence of ferromagnetism and unconventional superconductivity is triggered by the presence of spontaneous magnetization. The mixed phase is stable but the other superconducting phases that usually exist in unconventional superconductors are either unstable or for particular values of the parameters of the theory some of them are metastable at relatively low temperatures in a quite narrow domain of the phase diagram. Phase transitions from the normal phase to the phase of coexistence is of first order while the phase transition from the ferromagnetic phase to the coexistence phase can be either of first or second order depending on the concrete substance. Cooper pair and crystal anisotropies determine a more precise outline of the phase diagram shape and reduce the degeneration of ground states of the system but they do not change drastically phase stability domains and thermodynamic properties of the respective phases. The results are discussed in view of application to metallic ferromagnets as UGe2, ZrZn2, URhGe.Comment: 21 pages, 7 figures; Phys. Rev. B (2005) in pres

New features of the phase transition to superconducting state in thin films

The Halperin-Lubensky-Ma (HLM) effect of a fluctuation-induced change of the order of phase transition in thin films of type I superconductors with relatively small Ginzburg-Landau number $\kappa$ is considered. Numerical data for the free energy, the order parameter jump, the latent heat, and the specific heat of W, Al and In are presented to reveal the influence of film thickness and material parameters on the properties of the phase transition. We demonstrate for the first time that in contrast to the usual notion the HLM effect occurs in the most distinct way in superconducting films with high critical magnetic field $H_{c0}$ rather than in materials with small $\kappa$. The possibility for an experimental observation of the fluctuation change of the order of superconducting phase transition in superconducting films is discussed.Comment: 11 pages, MikTexTeX, 3 fig, 2 Tables, corrected some typos, Submitted J.Phys:Cond Ma

Diffraction field computation from arbitrarily distributed data points in space

Cataloged from PDF version of article.Computation of the diffraction field from a given set of arbitrarily distributed data points in space is an important signal processing problem arising in digital holographic 3D displays. The field arising from such distributed data points has to be solved simultaneously by considering all mutual couplings to get correct results. In our approach, the discrete form of the plane wave decomposition is used to calculate the diffraction field. Two approaches, based on matrix inversion and on projections on to convex sets (POCS), are studied. Both approaches are able to obtain the desired field when the number of given data points is larger than the number of data points on a transverse cross-section of the space. The POCS-based algorithm outperforms the matrix-inversion-based algorithm when the number of known data points is large. (C) 2006 Elsevier B.V. All rights reserved

SILENT KIDNEY AND TUMOURS OF THE UROGENITAL SYSTEM

No abstrac

RED LIST OF BULGARIAN ALGAE. II. MICROALGAE.

The Red List presented in this paper is focused on Bulgarian non-marine microalgae which face a risk of extinction. The assignment to each IUCN Red List category is according to the seven specific criteria and their relative values in the new method for an evaluation of the threatened status of microalgae (STOYNEVA-GÄRTNER ET AL., this volume). The list contains 756 taxa (613 species, 82 varieties and 61 forms) from 7 divisions, classified in six IUCN categories and shows that threatened microalgae represent 14% the total algal biodiversity of Bulgaria

Engineering security into distributed systems: a survey of methodologies

Rapid technological advances in recent years have precipitated a general shift towards software distribution as a central computing paradigm. This has been accompanied by a corresponding increase in the dangers of security breaches, often causing security attributes to become an inhibiting factor for use and adoption. Despite the acknowledged importance of security, especially in the context of open and collaborative environments, there is a growing gap in the survey literature relating to systematic approaches (methodologies) for engineering secure distributed systems. In this paper, we attempt to fill the aforementioned gap by surveying and critically analyzing the state-of-the-art in security methodologies based on some form of abstract modeling (i.e. model-based methodologies) for, or applicable to, distributed systems. Our detailed reviews can be seen as a step towards increasing awareness and appreciation of a range of methodologies, allowing researchers and industry stakeholders to gain a comprehensive view of the field and make informed decisions. Following the comprehensive survey we propose a number of criteria reflecting the characteristics security methodologies should possess to be adopted in real-life industry scenarios, and evaluate each methodology accordingly. Our results highlight a number of areas for improvement, help to qualify adoption risks, and indicate future research directions.Anton V. Uzunov, Eduardo B. Fernandez, Katrina Falkne

Dynamical properties of the Landau-Ginzburg model with long-range correlated quenched impurities

We investigate the critical dynamics of the time-dependent Landau-Ginzburg model with non conserved n-component order parameter (Model A) in the presence of long-range correlated quenched impurities. We use a special kind of long-range correlations, previously introduced by Weinrib and Halperin. Using a double expansion in \epsilon and \delta we calculate the critical exponent z up to second order on the small parameters. We show that the quenched impurities of this kind affect the critical dynamics already in first order of \epsilon and \delta, leading to a relevant correction for the mean field value of the exponent zComment: 7 pages, REVTEX, to be published in Phys. Rev.