Design of the absolute position sensors with Hall elements

Práce se zabývá možností použití lineárních Hallových snímačů vyráběných jako integrované obvody pro konstrukci absolutních snímačů polohy a natočení. Hallovy snímače ve spojení s permanentními magnety umožňují rozměrově malou konstrukci. V této práci je popsán návrh a řešení absolutního lineárního snímače polohy pro lineární pohon Stewartovy platformy a absolutních snímačů natočení pro robotický manipulátor Mini-swing. Použití těchto snímačů přináší mnoho výhod, ty hlavní jsou minimální rozměry a vysoká rozlišovací přesnost.This work deals with possibilities of use of linear Hall sensors which are made as integrated circuit for construction of absolute sensors of position and rotary position. Hall sensors with permanent magnets allow a smaller construction. In this work there is described a design and solution of absolute linear sensor of position for linear drive of Stewart's platform and absolute sensors of rotary position for robotic manipulator Mini-swing. Use of these sensors adds many advantages, primary minimal size and high resolution.

Interactive means formation of political consciousness in border communities

Проаналізовано питання транскордонної співпраці громад в умовах формування інформаційного суспільства. Автор констатує, що сучасні інтерактивні комунікаційні технології грають важливу роль у формуванні політичної свідомості мешканців транскордоння. Блоги і соціальні мережі інформують громадськість про події прикордонного життя, формують ціннісні орієнтації та значною мірою визначаючи думки і орієнтації людей, що включені у транскордонне інформаційне-комунікаційне середовище, визначає свідому поведінку. Формування політичної свідомості громад транскордоння з допомогою інтерактивних форм політичної комунікації потребує оволодіння основами мережевої культури.Analyzed cross-border cooperation in the community conditions of the information society. The author states that modern interactive communication technologies play an important role in shaping the political consciousness of the inhabitants transkordonnya . Blogs and social networks inform the public about the events of frontier life , form and value orientation is largely determined by the orientation of thought and people who are included in the cross-border information and communication environment determines conscious behavior. Formation of political consciousness cross-border communities through interactive forms of political communication needs in mastering the basics of network culture.Роботу виконано на кафедрі міжнародної інформації СНУ ім. Лесі Українк

Morphology and biomechanics of the nests of the Common Blackbird Turdus merula

Capsule Common blackbirds select different materials, with varying biomechanical properties, to construct different parts of their nest. Aims This study tested the hypothesis that outer components of a nest have a more structural role and so are stronger than materials used to line the cup. Methods Blackbird nests were measured prior to being dismantled to isolate structural components which were tested for mechanical strength and rigidity. Results Outer nest wall materials were significantly thicker, stronger and more rigid than materials in the inner structural wall or the cup lining. In the vertical plane materials used in the structural wall did not differ. By contrast, lining materials from the bottom of the nest cup were significantly thicker, stronger and more rigid than materials from the top of the cup. Conclusion Blackbirds use different materials in nest construction roles suited to their properties and so may be able to recognise the structural properties of these materials. Materials on the outside of the nest may have a key structural role during construction

Adaptive latitudinal variation in Common Blackbird Turdus merula nest characteristics

Nest construction is taxonomically widespread, yet our understanding of adaptive intraspecific variation in nest design remains poor. Nest characteristics are expected to vary adaptively in response to predictable variation in spring temperatures over large spatial scales, yet such variation in nest design remains largely overlooked, particularly amongst open-cup-nesting birds. Here, we systematically examined the effects of latitudinal variation in spring temperatures and precipitation on the morphology, volume, composition, and insulatory properties of open-cup-nesting Common Blackbirds’ Turdus merula nests to test the hypothesis that birds living in cooler environments at more northerly latitudes would build better insulated nests than conspecifics living in warmer environments at more southerly latitudes. As spring temperatures increased with decreasing latitude, the external diameter of nests decreased. However, as nest wall thickness also decreased, there was no variation in the diameter of the internal nest cups. Only the mass of dry grasses within nests decreased with warmer temperatures at lower latitudes. The insulatory properties of nests declined with warmer temperatures at lower latitudes and nests containing greater amounts of dry grasses had higher insulatory properties. The insulatory properties of nests decreased with warmer temperatures at lower latitudes, via changes in morphology (wall thickness) and composition (dry grasses). Meanwhile, spring precipitation did not vary with latitude, and none of the nest characteristics varied with spring precipitation. This suggests that Common Blackbirds nesting at higher latitudes were building nests with thicker walls in order to counteract the cooler temperatures. We have provided evidence that the nest construction behavior of open-cup-nesting birds systematically varies in response to large-scale spatial variation in spring temperatures

Experience of use of electronic network education and methodical complexes of disciplines for students of geological and oil specialties of higher education institutions

Разработаны и реализуются модульно-дистанционные электронные сетевые учебно-методические комплексы дисциплин «Физическая и коллоидная химия» и «Метрология, стандартизация и сертификация» для обучения студентов геологических, нефтяных и химических направлений с использованием через Интернет систем управления обучением (LMS – Learning Management System).Modular and remote electronic network educational and methodical complexes of disciplines "Physical and colloidal chemistry" and "Metrology, standardization and certification" for training of students of the geological, oil and chemical directions with use on the Internet of learning management systems (LMS – Learning Management System) are developed and are realized

Ocean data publication cookbook

This cookbook is an outcome of the 5th session of the SCOR/IODE/MBLWHOI Library Workshop on Data Publication and is posted here by permission of UNESCO.Executive summary: This “Cookbook” has been written for data managers and librarians who are interested in assigning a permanent identifier to a dataset for the purposes of publishing that dataset online and for the citation of that dataset within the scientific literature. A formal publishing process adds value to the dataset for the data originators as well as for future users of the data. Value may be added by providing an indication of the scientific quality and importance of the dataset (as measured through a process of peer review), and by ensuring that the dataset is complete, frozen and has enough supporting metadata and other information to allow it to be used by others. Publishing a dataset also implies a commitment to persistence of the data and allows data producers to obtain academic credit for their work in creating the datasets. One form of persistent identifier is the Digital Object Identifier (DOI). A DOI is a character string (a "digital identifier") used to provide a unique identity of an object such as an electronic document. Metadata about the object is stored in association with the DOI name and this metadata may include a location where the object can be found. The DOI for a document is permanent, whereas its location and other metadata may change. Referring to an online document by its DOI provides more stable linking than simply referring to it by its URL, because if its URL changes, the publisher need only update the metadata for the DOI to link to the new URL. A DOI may be obtained for a variety of objects, including documents, data files and images. The assignment of DOIs to peer-reviewed journal articles has become commonplace. This cookbook provides a step-by-step guide to the data publication process and showcases some best practices for data publication