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Number of results: 29
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Abstract

There is estrimated more than 750 (public and privat) hospitals active In Poland. In spite that there is legal regulation concerning hospital projects, realization and equipment – permanent financial problems concerning a public health service, results in standards of hospitals, much worse then represented in hospitals in highly developed countries. A long – term practice of authors, concerning both, design and implementation of hospitals, let them to formulate a set of remarks about disfunction, influalcing growth of a danger, risks and mistakes in medical practice, also unexpected accidents.
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Abstract

This article is devoted to the official forms in the inflection of chosen toponyms in Poland and the variety of dialectal singular and plural place names. The variety of place names often diverges from the rules of language use, and causes language users problems. The toponyms have peculiar, locally used inflected forms; the outside-linguistic (non-linguistic) factors that are social and local factors, play an important role in the inflection of place names. The local population often uses other forms than those recommended by official sources. I focus my attention on the genitive forms of toponyms because it is mainly here that one can see clear variations in the official and local inflection of place names. The material shows that the singular masculine toponyms have genitive endings: -a (in the official variety), -u (in the local variety), for example Biłgoraj, gen. Biłgoraja, but in the local dialect: biłgoraju. The singular feminine place names have genitive endings: -ej (in the official variety), -y||-i (in the local variety): Brzezowa, gen. Brzezowej, but Brzezowy in the local dialect. The plural toponyms have genitive endings: -ø, -ów, -i (-y), but in the local circulation the ending -ów is dominant and demonstrates a wider expansion in use. For example Brzózki, gen. Brzózek, in the local variety Brzuskuf; Budy, official gen. Bud, but Buduf; Burnie, gen. Burni, in the local dialect: Burniuf. The gathered material reflects a hesitation in the inflection of toponyms, as the linguistic customs and presented dialectal records of forms of genit ives of place names show a significantly diverse approach towards the Polish language.
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Abstract

The study deals with stability and dynamic problems in bar structures using a probabilistic approach. Structural design parameters are defined as deterministic values and also as random variables, which are not correlated. The criterion of structural failure is expressed by the condition of non-exceeding the admissible load multiplier and condition of non-exceeding the admissible vertical displacement. The Hasofer-Lind index was used as a reliability measure. The primary research tool is the FORM method. In order to verify the correctness of the calculations Monte Carlo and Importance Sampling methods were used. The sensitivity of the reliability index to the random variables was defined. The limit state function is not an explicit function of random variables. This dependence was determined using a numerical procedure, e.g. the finite element methods. The paper aims to present the communication between the STAND reliability analysis program and the KRATA and MES3D external FE programs.
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Abstract

W twórczości projektowo-badawczej Wacława Zalewskiego znajduje się zrealizowana w 1965 konstrukcja eksperymentalna sprężonej powłoki betonowej wiszącej na heksagonalnym układzie łuków stalowych. Ze względu na ówczesny brak odpowiednich narzędzi badawczych oraz projektowych, ta skomplikowana statycznie i technologicznie budowla powstała w sposób doświadczalny na podstawie założeń koncepcyjnych Zalewskiego, który jednocześnie sprawował nadzór nad jej realizacją. Dynamiczne działania techniczne podczas realizacji konstrukcji mogą być klasyfikowane jako wczesne przejawy rozwiniętego w ostatnich latach poszukiwania formy obiektu architektonicznego określanego mianem ”form finding”. Przeanalizowanie założeń technicznych oraz technologii wznoszenia tego interesującego obiektu stanowią cel niniejszego artykułu. Ze względu na brak dostępnej dokumentacji autor opierał się na informacjach zebranych podczas rozmów z Wacławem Zalewskim i uzyskanych od niego fotografiach z realizacji obiektu.
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Abstract

The urban form creates the city structure, whose spatial values not only shape the functionality of the city, but also its identity, whose the most important determinant is the urban tissue. The subject of the study is the analysis of selected historical areas of Cracow in the scope of composition and readability of their urban structure. The analysis focuses on the identification of the most important aspects of spatial renewal processes of these spaces. These processes aimed at strengthening their potential as local centres, that can become a factor stimulating the development of the individual urban units. The increase in the attractiveness and quality of public spaces will positively affect the degree of their perception by the inhabitants and the social relations taking place in them. This in turn, influences the degree of the social involvement in development processes and the creation of more or less spontaneous, bottom-up activities.
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Abstract

When and where did life first appear on Earth? Humankind has been pondering this question for centuries. The discovery of ancient microalgae is providing a partial answer.
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Abstract

The article is an introduction to the monographic content of a volume containing articles dedicated to contemporary models of building residential districts in Europe, where the issue of an attractive, beautiful architectural form must integrate the dimension of energy efficiency. Individualism must be subject to flexible regulations so that the current understanding of the concept of spatial order brings with it commonly desirable qualities as an effective strategy against the processes of the city›s sprawl. Attached is the output of the HOPU-S URBACT II project (2007-2013), which became an inspiration for the topic.
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Abstract

Tekst omawia zagadnienia relatywizmu w kontekście międzynarodowej architektury, jak również konfrontuje je z przeciwnymi tendencjami. Wybrane przykłady świadczą o tym, że tego rodzaju architektura jako wynik globalizmu przeciwstawia się tradycji. Mimo przedstawienia główne aspektów relatywizmu, artykuł ten stanowi również prolegomenę do tendencji absolutystycznych w architekturze. Paradoksalnie absolutyzm nie zawsze narzuca architekturze styl historyzujący, lub monumentalny. Relatywizm jednak nie stanowi jednorodnego stylu i nie posiada sprecyzowanych granic. W tym świetle jakakolwiek próba całkowitej negacji tradycyjnych wartości w procesie projektowania wydaje się być skazana na niepowodzenie.
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Abstract

Combining surface measurement data from individual measurements of surface fragments is an issue that has been recognized for flat surfaces. The connection takes place on the principle of making ‘overlap’ measurements according to a specific measurement strategy, and then the algorithm synthesizes the measurement data for the common part (data fusion). This paper presents a method of combining partial data into one larger set using image processing methods. The purpose of the analysis is to combine surface data of a more complex shape in terms of surface roughness and waviness. A successful attempt was made to combine surface measurement data located on a cylindrical surface – convex surface. A rotated table was designed and used for surface data acquisition. The datasets were acquired with the use of CCI 6000 (366 μm – 366 μm) with the assumed overlapping of at least 20%. The measurement datasets were first pre-processed: filling in non-measured points, levelling and form re- moving were applied. For such processed datasets, the common part was identified (data registration) and then the data fusion was performed. An example of stitching the surface datasets shows usefulness of the presented methodology.
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Abstract

A cast iron is gradient material. This means that depending on the cooling rate it is possible, at the same chemical composition and the physicochemical state of molten metal, to obtain material with a different structure. The connection between the wall thickness of the casting and the speed of its cooling expresses the casting module. Along with the module escalation a cooling rate of the casting is reducing what can cause changes of the microstructure and the increased tendency to the crystallization of distorted graphite forms. Inspections of experimental castings from nodular cast iron with different modules were conducted to the graphite form.
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Abstract

The method of determining the accuracy of polymer molds in plaster forms has been discussed. Distortion of the surface of molds and plaster molds has been assessed. It has been found that the presence of monolithic and porous structure in the samples does not change the accuracy of the surfaces when forms are prepared for removing the material of the model. It has been found that in case of full-mold casting it is more expedient to form the mold cavity with cellular adjustable structures of molding prototypes.
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Nauka | 2017 | No 4 | 197–206

Abstract

Professor Jerzy Pelc was the creator and long-time manager of the Department of Logical Semiotics, University of Warsaw. He also founded the Polish Society of Semiotics. He published six own books, among others Studies in Functional Logical Semiotics of Natural Language (1971; in English); he edited also dozens of volumes of Semiotic Studies and Library of Semiotic Thought. As Kotarbiński, his master, and Twardowski, the master of his master, Professor Pelc was a radical rationalist. This radical rationalism has linked him to atheism, anti-communism, a distance to politics, and a frown on the falsehood of public life. He was a great patriot – in his life and in his work. He considered himself a successor of the Lvov-Warsaw School tradition. In the field of metaphysics, Professor Pelc combined theoretical minimalism with anti-rationalist attitudes, including the postulate of precision and the requirement of criticism. The main field of his interest was logical – and broader: theoretical – semiotics. He advocated and largely developed the functional concept of signs. To traditional paradigms of research: historical, teleological, causal and prognostic ones – Professor Pelc has added a semiotic paradigm, determined by the question “What does it mean that p?”. Referring to the interdisciplinary fashion for interdisciplinary research, he conducted an analysis of the notion of INTERDISCIPLINARITY. In ontology, he analyzed the notions of OBJECT and CAUSALITY. In his approach, aesthetics was treated form a semiotic point of view: he sought mainly ways to logically rewrite its terminology. In particular, he reconstructed the main aesthetic notions: FORM and IDEOLOGY (of literary works), THEME, MOTIVE, METAPHOR and (literary) FICTION – as well as semiotic notions essential to the description of literary arts, namely the notions of ASSERTION and INTENSIONALITY. In the field of ethics, Professor Pelc declared himself as an advocate of the ideal of trustworthy guardian, which he took over from his teacher, Kotarbiński. In metaethics, he analyzed the notions of NORM, EVALUATION and HUMANITY. A master of Polish: beautiful Polish – he was certainly a true humanist.
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Abstract

Artykuł jest prezentacją programu nauczania przedmiotu „Podstawy projektowania architektonicznego – kompozycje” studentów pierwszego roku kierunku architektura Wydziału Budownictwa i Architektury Politechniki Lubelskiej. Przykładowe prace studenckie zamieszczone w tekście są ilustracją wyników procesu dydaktycznego
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Abstract

Obtaining discrete data is inseparably connected with losing information on surface properties. In contact measurements, the ball tip functions as a mechanical-geometrical filter. In coordinate measurements the coordinates of the measurement points of a discrete distribution on the measured surface are obtained. Surface geometric deviations are represented by a set of local deviations, i.e. deviations of measurement points from the nominal surface (the CAD model), determined in a direction normal to this surface. The results of measurements depend both on the ball tip diameter and the grid size of measurement points. This article presents findings on the influence of the ball tip diameter and the grid size on coordinate measurement results along with the experimental results of measurement of a free-form milled surface, in order to determine its local geometric deviations. One section of the surface under research was measured using different measurement parameters. The whole surface was also scanned with different parameters, observing the rule of selecting the tip diameter d and the sampling interval T in the ratio of 2:1.
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Abstract

The paper discusses a method of quantitative comparison of cylindricity profiles measured with different strategies. The method is based on applying so-called Legendre-Fourier coefficients. The comparison is carried out by computing the correlation coefficient between the profiles. It is conducted by applying a normalized cross-correlation function and it requires approximation of cylindrical surfaces using the Legendre-Fourier method. As the example two sets of measurement data are employed: the first from the CMM and the second one from the traditional radial measuring instrument. The measuring data are compared by analyzing the values of selected cylindricity parameters and calculating the coefficient of correlation between profiles.
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Abstract

Computer-aided tools help in shortening and eradicating numerous repetitive tasks that reduces the gap between digital model and actual product. Use of these tools assists in realizing free-form objects such as custom fit products as described by a stringent interaction with the human body. Development of such a model presents a challenging situation for reverse engineering (RE) which is not analogous with the requirement for generating simple geometric models. Hence, an alternating way of producing more accurate three-dimensional models is proposed. For creating accurate 3D models, point clouds are processed through filtering, segmentation, mesh smoothing and surface generation. These processes help in converting the initial unorganized point data into a 3D digital model and simultaneously influence the quality of model. This study provides an optimum balance for the best accuracy obtainable with maximum allowable deviation to lessen computer handling and processing time. A realistic non trivial case study of free-form prosthetic socket is considered. The accuracy obtained for the developed model is acceptable for the use in medical applications and FEM analysis.
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Abstract

W artykule badam naturę poznania intelektualnego opisaną przez Henri Bergsona w Ewolucji twórczej (1907). W pracy tej teoria wiedzy naukowej i potocznej zyskuje w istocie swój ostateczny kształt; zostaje umieszczona w ewolucji życia. W tym kontekście analizuję charakter relacji wytyczanych przez ludzki rozum oraz rodzaj zależności występującej między poznaniem intelektualnym i rozwojem gatunkowym człowieka. Według Bergsona można stosować z powodzeniem metody rozumu w naukach ścisłych czy przyrodniczych, lecz nie w tych gałęziach wiedzy, w których oddziałuje trwanie. Dlatego błędem jest rozszerzanie praw fizyki i matematyki na zjawiska zachodzące w materii organicznej i w umyśle. Z punktu widzenia epistemologicznego życie i świadomość konstytuują inny, specyficzny dla siebie poziom. Wyznaczenie dziedziny badań właściwej intelektowi i ograniczenie pola jego aktywności pozwala zarazem na przekroczenie relatywizmu poznawczego I. Kanta.
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Abstract

Architektura XIX wieku była odzwierciedleniem epoki mistycyzmu, a zarazem sekularyzacji sztuki, dążenia do ideału jedności sztuk, a jednocześnie relatywizmu i indywidualizmu. Wyrosła na podłożu romantyzmu, może być ona postrzegana, jako wypadkowa postawy duchowej, światopoglądu i ruchu naukowego określanego mianem historyzmu. Rozwój historii sztuki i fascynacja przeszłością, wraz z bogactwem i różnorodnością stylów wpływały na polifonię ówczesnej architektury, w przestrzeni której istniał przede wszystkim historyzm, a także eklektyzm. Architekci historyzmu tworzyli dzieła inspirowane jednym stylem. Eklektyzm posiłkuje się stylami historycznymi w ówczesnym pojęciu romantycznymi, mieszając ich formy i motywy w jednej budowli. Wątki znaczeniowe architektury XIX wieku wiążą się z symboliką i wartościami niesionymi przez style minionych epok, reinterpretując ich formy i znaczenia.
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Abstract

The paper presents the problem of assessing the accuracy of reconstructing free-form surfaces in the CMM/CAD/CAM/CNC systems. The system structure comprises a coordinate measuring machine (CMM) PMM 12106 equipped with a contact scanning probe, a 3-axis Arrow 500 Vertical Machining Center, QUINDOS software and Catia software. For the purpose of surface digitalization, a radius correction algorithm was developed. The surface reconstructing errors for the presented system were assessed and analysed with respect to offset points. The accuracy assessment exhibit error values in the reconstruction of a free-form surface in a range of ± 0.02 mm, which, as it is shown by the analysis, result from a systematic error.
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Abstract

Geometric deviations of free-form surfaces are attributed to many phenomena that occur during machining, both systematic (deterministic) and random in character. Measurements of free-form surfaces are performed with the use of numerically controlled CMMs on the basis of a CAD model, which results in obtaining coordinates of discrete measurement points. The spatial coordinates assigned at each measurement point include both a deterministic component and a random component at different proportions. The deterministic component of deviations is in fact the systematic component of processing errors, which is repetitive in nature. A CAD representation of deterministic geometric deviations might constitute the basis for completing a number of tasks connected with measurement and processing of free-form surfaces. The paper presents the results of testing a methodology of determining CAD models by estimating deterministic geometric deviations. The research was performed on simulated deviations superimposed on the CAD model of a nominal surface. Regression analysis, an iterative procedure, spatial statistics methods, and NURBS modelling were used for establishing the model.
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Abstract

Surface topography assessments with valley exploration are of great importance. Two-process surfaces are often proposed for many combustion engines. One of the errors committed in surface topography measurements and analysis are those that occur during data processing. In this paper, improper areal form removal was taken into consideration for plateau-honed cylindrical surfaces with additionally burnished oil pockets. Usually, the reference plane is established by application of: fitting algorithms (e.g. cylindrical shape), polynomials, filters and other procedures. In many cases, the influence of the reference plane was not fully recognized during valley depth consideration. Moreover, the influence of areal form removal with edge-to-dimple and valley‑to-dimple distances was not precisely defined. In this research, commonly used algorithms for form separation in surface topography analysis were proposed for the applications being considered. The digital filter bandwidth was also specified for valley depth analysis. The distortion of edge‑located oil pockets was specified. It was assumed that application of robust techniques does not necessarily provide the desired results.
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Abstract

Local geometric deviations of free-form surfaces are determined as normal deviations of measurement points from the nominal surface. Different sources of errors in the manufacturing process result in deviations of different character, deterministic and random. The different nature of geometric deviations may be the basis for decomposing the random and deterministic components in order to compute deterministic geometric deviations and further to introduce corrections to the processing program. Local geometric deviations constitute a spatial process. The article suggests applying the methods of spatial statistics to research on geometric deviations of free-form surfaces in order to test the existence of spatial autocorrelation. Identifying spatial correlation of measurement data proves the existence of a systematic, repetitive processing error. In such a case, the spatial modelling methods may be applied to fitting a surface regression model representing the deterministic deviations. The first step in model diagnosing is to examine the model residuals for the probability distribution and then the existence of spatial autocorrelation.
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