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Tytuł:
Photomontage: Between Fragmentation and Reconstruction of Experience
Autorzy:
Weichert, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/451453.pdf
Data publikacji:
2020-04-15
Wydawca:
Uniwersytet Warszawski. Wydział Filozofii
Tematy:
photomontage
photography
fragmentation
reconstruction
content of experience
Opis:
In the twentieth century, due to the development of mechanical reproduction and press, photomontage became a popular means of communication – popular and diverse in its nature and methods of exploitation (considering press in Germany or in the Soviet Union and individual works of art). It is one of the cultural phenomena related to the change of rhythm of life and a sense of its increased pace, and an impression of fragmentation of reality. This article questions the role of photomontage in such an experience. The said role is complex: sometimes photomontage allows for expression of that experience, and sometimes it is meant to evoke it, in the spirit of modernity; it is both a tool of agitation and critique. In order to answer this question I shall assume the approach of Walter Benjamin, who diagnoses the crisis of experience and the loss of storytelling skills – and describes the potential of photography. This potential is differently approached by artists and scholars who point out contradictory purposes and results of using photomontage. Referring to various works of art shall make it possible to define the tensions characteristic of photomontage. Due to its plasticity and the ambiguity of a photograph, and the potential for (de)contextualization and (de)construction, photomontage can function in a hard to understand, rapidly changing world and address the fragmentation of experience.
Źródło:
Eidos. A Journal for Philosophy of Culture; 2020, 4, 1; 7-22
2544-302X
Pojawia się w:
Eidos. A Journal for Philosophy of Culture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A model study to measure fragmentation by blasting
Autorzy:
Nefis, M.
Talhi, K.
Powiązania:
https://bibliotekanauki.pl/articles/972322.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
FragScan
fragmentation
blasting
rock
explosive
Opis:
Accurate measurement of blast fragmentation is important in mining and quarrying operations, to monitor blasting and optimize blast design. A new digital photoanalytical method to measure the size of fragments by using FragScan system is presented here. Photographs of the broken rock are digitized, and individual measurement, based on mathematical morphology techniques, achieves, within successive openings on a binary image, a numerical sieving. The method was tested during recent full scale blasting tests in the case of open pit gold mine of Amesmessa (Algeria). It shows great potential as a practical aid to predicting, monitoring, and controlling the quality of the fragmented rock.
Źródło:
Mining Science; 2016, 23; 91-104
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A nonlocal coagulation-fragmentation model
Autorzy:
Lachowicz, Mirosław
Wrzosek, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/1208218.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
integro-differential equations
diffusion
coagulation
nonlocal interaction
fragmentation
kinetic models
Opis:
A new nonlocal discrete model of cluster coagulation and fragmentation is proposed. In the model the spatial structure of the processes is taken into account: the clusters may coalesce at a distance between their centers and may diffuse in the physical space Ω. The model is expressed in terms of an infinite system of integro-differential bilinear equations. We prove that some results known in the spatially homogeneous case can be extended to the nonlocal model. In contrast to the corresponding local models the analysis can be carried out in the $L_1(Ω)$ setting. Our purpose is to study global (in time) existence, mass conservation and well-posedness of the model.
Źródło:
Applicationes Mathematicae; 2000, 27, 1; 45-66
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fragmentation and the value-added structure of exports in Polish industry
Autorzy:
Posłuszny, K.
Powiązania:
https://bibliotekanauki.pl/articles/108328.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
international trade
global value chains
fragmentation
globalization
Opis:
The accession to the European Union contributed to an increase in Poland’s foreign trade, and the growing export market is coupled with an increasing importance of intermediate imports, which is necessary to produce goods of appropriate quality and price. This phenomenon is a part of the process of fragmentation in global value chains. Fragmentation of the value chains should manifest themselves, in particular, in a multi-phase manufacturing process that requires many components of different types. In this paper, the recently available OECD database of the Trade in Value Added (TiVA) has been used to assess changes in the composition of gross exports of Poland and other Central Europe countries. In Poland, practically all sectors show a growing share of the imported value added. The cases analyzed confirm the thesis that the high technology sectors foster fragmentation. In the case of technologically lessadvanced sectors and short-value chains, benefits of fragmentation are limited. The progressing fragmentation and, as a consequence, a growing share of the imported value added made the gross export value (which is commonly used in statistics) of little use for the analysis of the economic role and competitive position of sectors. However, thanks to new projects based on I-O matrices of the global economy, it is possible to decompose gross exports into respective domestic and foreign value-added streams.
Źródło:
Managerial Economics; 2015, 16, 2; 149-159
1898-1143
Pojawia się w:
Managerial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Creeping Constitutionalization and Fragmentation of International Law: From “Constitutional” to “Consistent” Interpretation
Autorzy:
Arcari, Maurizio
Powiązania:
https://bibliotekanauki.pl/articles/706923.pdf
Data publikacji:
2014-07-25
Wydawca:
Polska Akademia Nauk. Instytut Nauk Prawnych PAN
Tematy:
fragmentation, constitutionalization, international law, legal interpretation
Opis:
This article considers the different interpretive methods used to deal with the phenomena of the constitutionalization and fragmentation of international law. While the technique of ‘constitutional’ interpretation has traditionally been developed and applied with reference to the UN Charter, the expansion of other constitutionally-oriented regimes at both universal and regional levels has multiplied the threat to the coherence of the international legal order, dramatically enhancing the problem of its fragmentation. To cope with this problem, the principle of systemic integration has been proposed as a legal panacea for the coordination of different normative layers of international law. Insofar as systemic integration aims at minimizing normative conflicts and is predicated on the presumption of compatibility between the different rules at stake, it can be posited that the principle of ‘consistent interpretation” represents one of its fundamental conceptual underpinnings. However, consistent interpretation as a legal technique has been traditionally conceived for a constitutional legal environment, and its application at the international level is likely to produce unintended ‘constitutionally-oriented’ legal effects. This article concludes that the various interpretive methods considered, through their dynamic of reciprocal interferences, operate in a creeping fashion to promote, rather paradoxically, both the constitutionalization and fragmentation of international law. As such, they are symptomatic of legal pluralism and of the complexities that characterize modern international law.
Źródło:
Polish Yearbook of International Law; 2013, 33; 9-25
0554-498X
Pojawia się w:
Polish Yearbook of International Law
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of selected parameters of the fragmentation warhead on its effectiveness
Autorzy:
Panowicz, R.
Konarzewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/242782.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
directed fragmentation warheads
dynamics
finite element method
Opis:
The aim of the paper is to present the results of research on the influence of fragmentation warhead selected parameters on spreading capabilities. Fragmentation warhead is used to combat shaped charges and consists of metallic cover, explosive material and fragmentation liner. Fragmentation liner is built from metal balls or cylinders embedded in the resin. The explosives, initiated by a igniter, causes driving the liner in a few milliseconds up to about 900 m/s. The liner, as well as the case, fragments into many parts during this dynamic load. Geometric parameters of the fragmentation warhead affect the fragments velocity, their mass or geometric dimensions which are the most important parameters determining effectiveness of the warhead. In order properly to describe behaviour of fragmentation warhead arbitrary Lagrangian-Eulerian (ALE) and fluid-structure interaction (FSI) approach was used. In this method, the fragmentation liner is modelled using Lagrange description while the resin, the explosive charge and the surrounding air are modelled using Euler description. A three dimensional model of directed fragmen-tation warhead along with the fragmentation liner was prepared in MSC.Patran software and the dynamic phenomena analysis used a nonlinear finite element method implemented in the LS-DYNA program.
Źródło:
Journal of KONES; 2015, 22, 3; 193-200
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Introduction to numerical analysis of directed fragmentation warheads
Autorzy:
Panowicz, R.
Nowak, J.
Konarzewski, M.
Niezgoda, T.
Powiązania:
https://bibliotekanauki.pl/articles/243275.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
finite elements method
dynamic
directed fragmentation warheads
Opis:
The aim of the paper is to presents one of the possible approaches to the numerical analysis of the behaviour of directed fragmentation war heads. These kinds of warheads consists of: metallic or composite cover, explosive material and a driven and fragmentation liner. The explosives are initiated by a booster causes driving the liner in a few milliseconds up to about 900 m/s. The liner fragments into many parts during this intensive and dynamic load. The fragments move in a cone which dimensions depend on the warheads shape and mechanical parameters of others warheads parts. All of the warheads elements are selected to meet the assumed parameters. The fragments velocity, their mass or geometric dimensions and cone angle are the most important parameters of the warheads fragments. Such a warhead, in the initial phase of the liner driving can be numerically modelled in the field of the continuum damage mechanics. Such a description is presented in other papers. This approach in a further phase of driving cause the increases of inaccuracies. Therefore, this paper proposes the use of ALE and FSI approach to describe the behaviour of the fragmentation warheads. A three-dimensional numerical model of the directed fragmentation warheads was made in the MSC Patran, and the dynamic phenomena analysis used a nonlinear finite element method implemented in the LS-Dyna program.
Źródło:
Journal of KONES; 2013, 20, 4; 319-325
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Process of local government fragmentation in Croatia: From a big-bang to a status quo
Autorzy:
Škarica, Mihovil
Powiązania:
https://bibliotekanauki.pl/articles/1069054.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Croatia
local government
municipal splits
territorial fragmentation
Opis:
The paper explores and explains the fragmentation process in Croatian local government during the transition period from 1990 onwards. Special focus is given to the emergence of new municipalities (municipal splits/ secessions) that occurred after the new two-tier local government system was established in 1993. Excessive fragmentation of territorial structure at the beginning of the 1990s was a systematic and centrally driven reform that was meant to break with the inherited local government model and break up its territorial structure as radically as possible. While the initial overhaul in 1993 was mostly the result of conscious policy implemented in a top-down manner, subsequent municipal splits were mostly the outcome of local initiatives and lobbying, and were predominantly shaped by local, primarily economic factors, whereas political and cultural factors were of secondary importance. The national institutional context, including criteria and procedural rules for splits, were quite liberal during this whole period, with a moderate tightening-up trajectory. The number of municipalities finally stabilised in 2006, since when there have been no more splits.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2021, 25, 1; 46-53
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forest fragmentation in the Tatra Region in the period 2000 -2006
Autorzy:
Kopecka, M.
Novaček, J.
Powiązania:
https://bibliotekanauki.pl/articles/294350.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Geomorfologów Polskich
Tematy:
forest fragmentation
CORINE Land Cover
landscape change
windstorm calamity
Tatra region
Opis:
The calamity windstorm in November 2004 caused dramatic changes of land cover in the Tatra Mountains. The bora have destroyed then more than 12,000 ha of forest and principally affected the habitat structure in the Tatra National Park. The aim of this contribution is to quantify changes in forest fragmentation in 2000 and 2006. We present forest fragmentation maps related to the years 2000 and 2006. The CORINE Land Cover data layers CLC 2000 and CLC 2006 converted to raster format were used as the input data in the process of forest fragmentation assessment. Forest pixels were classified according to fragmentation indices measured within the surrounding landscape as the forest core, forest patch, forest edge, and perforated forest. Decrease of the compact forest areas (forest core) by about 9% was recorded. On the other side, increased percentage of disrupted forest areas was observed. Decrease of the area of the CLC forest classes (classes 311, 312 and 313) on land cover maps from 2000 and 2006 was connected with an increased number of transitional woodland/shrubs polygons (CLC class 324). These results suggest a temporary fragmentation with possible forest regeneration. On the other hand, forest destruction in the National Park facilitated the development of travel and tourism (new hotels, ski parks, etc.). An increased number of construction sites (CLC class 133) indicate that an urban sprawl associated with a permanent forest fragmentation can be also expected in the future.
Źródło:
Landform Analysis; 2009, 10; 58-63
1429-799X
Pojawia się w:
Landform Analysis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining the parameters of arable land fragmentation
Autorzy:
Bożek, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/145477.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
struktura przestrzenna
scalanie gruntów
zarządzanie gruntami
fragmentacja gruntów
GIS
land consolidation
spatial structure
land management
land fragmentation
Opis:
Unfavorable spatial structure of arable land located in Małopolska is a major obstacle in conducting agricultural activity. Arable lands located in the southern part of Małopolska are fragmented, have small area, and irregular shapes. Agricultural activity on land with an unfavorable spatial structure is associated with an increase in production costs, which directly results in lower income of farms. One of the methods of improving spatial conditions is to implement land consolidation works. They allow to organize the spatial structure, increase the area of agriculturally used parcels, while reducing their number. The article presents a new approach in determining the parameters of land fragmentation. GIS tools were used to identify areas with unfavorable spatial parameters. The methodology which allows for the processing, filtration of source data, determination and visualization of land fragmentation parameters is discussed. As part of the research, the Binning method was used, which allows to visualize the phenomenon and simultaneously reduce the data used. In the work, a detailed assessment of land fragmentation parameters was made, which can be used in agricultural land management works. Analyzes have shown that the southern areas of the Nowy Targ County are characterized by intensive fragmentation of arable land. There are also unfavorable parameters related to the elongation and shape of parcels in the discussed areas.
Źródło:
Geodesy and Cartography; 2019, 68, 1; 163-176
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fragmentaryzacja przestrzeni publicznej – próby rekompozycji
Fragmentation of the Public Space – An Attempt at Recomposition
Autorzy:
Dymnicka, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/413831.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Warszawski. Instytut Ameryk i Europy. Centrum Europejskich Studiów Regionalnych i Lokalnych (EUROREG)
Tematy:
fragmentacja
przestrzeń publiczna
rekompozycja
architektura
fragmentation
public space
recomposition
architecture
Opis:
Publiczna przestrzeń epoki ponowoczesnej jest zlepkiem nieciągłych funkcji, zbiorem luźno powiązanych fragmentów, coraz częściej bez związku z miastem. Ludzie komponują sobie własne miasto z indywidualnych trajektorii, wyznaczanych trasami samochodowymi. Neoliberalna logika rozwoju miasta uznaje zasadę spontaniczności w miejscach, gdzie dominują interesy grup dużego kapitału, spychając na margines jedno z ważniejszych zadań współczesnej urbanistyki – ochronę i rozwój przestrzeni publicznej. W związku z kryzysem, jaki obecnie przechodzi (presja komercji), podejmuje się próby przywracania jej znaczenia społecznego i przestrzennego. Celem przeobrażeń jest powiązanie przestrzeni publicznych z szerszym otoczeniem (z terenami otwartymi, strefami nadwodnymi, ciągami spacerowymi, placami zabaw etc.). Rekompozycja jest częścią procesu odnowy, dzięki której udaje się scalić miasto i odtworzyć tożsamość miejsca wszędzie tam, gdzie nie rezygnuje się z relacji, w jakie współczesna architektura może wejść z użytkownikami i otoczeniem.
Public space of the post-modern epoch is a conglomerate or blend of discontinuous functions, a collection of loosely connected fragments, increasingly more frequently unrelated to a city. People compose for themselves their own town from individual trajectories that are outlined by means of motor roads. Neo-liberal logic of city development recognizes the rule of spontaneity wherever the interest of big capital groups dominates, pushing onto the sidelines the more important task of contemporary urban planning – the protection and development of public spaces. Due to the crisis it is undergoing at present (commercial pressure), the efforts are taken to regain its social and spatial significance. The purpose of these transformations is bonding public spaces with broader surroundings (with open terrains, waterside zones, promenades, playgrounds, etc). These changes use programmed connections, contacts, passages, links, connecting areas and other relations that invest new sociological and cultural meanings into public spaces. The integration process gives positive results in numerous cities of Western Europe. One of them, perhaps the most essential, is development of more attractive and deeper relationships of inhabitants with their urban environment. Although the task fails to be easy (integrating tendencies compete with inclinations for disintegration), it is an important step towards the enhancement of urban life quality. The evidence can be numerous discussions and conferences on the issue of public space.
Źródło:
Studia Regionalne i Lokalne; 2008, 3(33); 33-52
1509-4995
Pojawia się w:
Studia Regionalne i Lokalne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Location of overhead power lines within Bukowe hills mesoregion in relation to the assessment of forest area fragmentation
Autorzy:
Pieńkowski, Paweł
Stoltman, Marcin
Zakrzewski, Bogusław
Powiązania:
https://bibliotekanauki.pl/articles/2029292.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
high-voltage power transmission line
habitat fragmentation
landscape fragmentation
landscape analysis
linia przesyłowa wysokiego napięcia
fragmentacja siedliska
fragmentacja krajobrazu
analiza krajobrazu
Opis:
National power grid in Poland requires modernisation, therefore by 2030 numerous actions are scheduled regarding the expansion of the existing network and the construction of new electricity transmission lines (power lines). The planned activities will undoubtedly change the quality of landscape and result in fragmentation of forest habitats, some of which are characterised by high biodiversity and constitute a key element of ecological corridors. The aim of the present paper was to outline the issue of the impact of the power line corridors on forest habitat fragmentation, as well as to present the GuidosToolbox software (Graphical User Interface for the Description of image Objects and their Shapes) used, among other things, for the determination of the degree of fragmentation of forest habitats. The analysis concerned the Puszcza Bukowa forest, which is a part of the Natura 2000 network and is protected under the Szczecin Landscape Park ‘Puszcza Bukowa’. Despite abundant natural assets of the Puszcza Bukowa forest, it was necessary to run many power lines through its area due to location of the forest in the vicinity of the Szczecin agglomeration. The course of power lines contributed to the fragmentation of the discussed forest complex and to the depletion of its interior classified with the GuidosToolbox software as ‘Intact’. The software discussed in the present paper may prove useful in the identification of the degree of forest area fragmentation, connected with the course of high-voltage power transmission lines, and in the assessment of the impact of the planned investment projects on biocenoses.
Źródło:
Geomatics, Landmanagement and Landscape; 2021, 3; 41-52
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the detonation initiation point position influence on the cylindrical fragmentation warhead effectiveness
Autorzy:
Panowicz, R.
Konarzewski, M.
Trypolin, M.
Powiązania:
https://bibliotekanauki.pl/articles/243709.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
finite elements method
dynamics
directed fragmentation warheads
Opis:
The article presents results of the numerical analyses of the fragmentation warhead, which is one of the key elements of the missile used to combat anti-tank missiles. The fragmentation warhead is composed of such elements as outer casing, inner casing, explosive material and fragmentation liner. The fragmentation liner is built from steel spheres or cylinders embedded in epoxy resin. As a result of the explosive material detonation the pressure wave is generated, which affects the liner, causes its fragmentation, and drives each splinter. In order to perform numerical analyses the model of the cylindrical fragmentation warhead with a diameter of 80 millimetres and a length of 100 mm was prepared. The fragmentation liner consists of steel spheres with a diameter of 5 mm. It was assumed in simulation that the detonating material is the plastic explosive C4. The influence of the position of the explosive charge detonation initiation point of the fragmentation warhead on its effectiveness was studied. Effectiveness was evaluated by measuring the maximum speed obtained by the fragments and their spatial distribution. A three-dimensional model of the studied system has been prepared using the MSC Patran software and the numerical analyses were performed using the finite element method with explicit scheme of the time integration implemented in the LS-Dyna solver. To model gas domain Arbitrary Lagrangian-Eulerian (ALE) method was used and interaction between gas and solid body was modelled with FSI coupling.
Źródło:
Journal of KONES; 2016, 23, 1; 263-270
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ stopnia rozdrobnienia słomy na trwałość kinetyczną brykietów
Influence of straw fragmentation on kinetic endurance of briquette
Autorzy:
Hebda, T.
Złobecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/291497.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
brykiet
trwałość
rozdrobnienie
słoma
briquettes
endurance
straw
fragmentation
Opis:
Mała gęstość objętościowa słomy wymaga posiadania dużej przestrzeni magazynowej, ponieważ słoma do spalania musi być przechowywana w pomieszczeniach zadaszonych i osłoniętych. Przetwarzanie biomasy w brykiety powoduje zmniejszenie objętości takiego paliwa oraz uzyskanie znacznej poprawy jego wartości energetycznej jak również właściwości transportowych i magazynowych. W pracy przedstawiono analizę wpływu stopnia rozdrobnienia na cechy mechaniczne brykietów wykonanych ze słomy pszennej, żytniej oraz rzepakowej. Stwierdzono istotne statystycznie oddziaływanie wielkości frakcji słomy na trwałość wykonanych z niej brykietów. Natomiast wpływ materiału, z jakiego wykonane były brykiety (gatunek słomy) okazał się nieistotny.
Low bulk density of straw requires considerable storing space since straw for firing must be stored in roofed and covered rooms. Processing biomass into briquettes causes decrease of volume of such fuel and a considerable improvement of its energy value as well as transport and storing properties. The work presents analysis of the fragmentation degree on mechanical properties of briquettes made of grain, rye and rape straw. Statistically significant influence of straw fractions seize on endurance of briquettes made of it, was reported. Whereas, influence of the material of which briquettes were made (straw kind) appeared to be insignificant.
Źródło:
Inżynieria Rolnicza; 2012, R. 16, nr 2, t. 2, 2, t. 2; 57-64
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fragmentation of Public Space - An Attempt at Recomposition
Autorzy:
Dymnicka, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/414569.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Warszawski. Instytut Ameryk i Europy. Centrum Europejskich Studiów Regionalnych i Lokalnych (EUROREG)
Tematy:
przestrzeń publiczna
studia miejskie
fragmentacja przestrzeni miejskiej
rozwój miasta
public space
urban studies
fragmentation of urban space
city development
Opis:
Public space of the post-modern epoch is a conglomerate or blend of discontinuous functions, a collection of loosely connected fragments, increasingly more frequently unrelated to a city. People compose for themselves their own town from individual trajectories that are outlined by means of motor roads. Neo-liberal logic of city development recognizes the rule of spontaneity wherever the interest of big capital groups dominates, pushing onto the sidelines the more important task of contemporary urban planning – the protection and development of public spaces. Due to the crisis it is undergoing at present (commercial pressure), the efforts are taken to regain its social and spatial significance. The purpose of these transformations is bonding public spaces with broader surroundings (with open terrains, waterside zones, promenades, playgrounds, etc). Such recomposition is part of a regeneration process that unites the city and reconstructs the identity of the place where relationships of inhabitants with their urban environment were not completely abandoned.
Źródło:
Studia Regionalne i Lokalne; 2009, numer specjalny / special issue; 59-77
1509-4995
Pojawia się w:
Studia Regionalne i Lokalne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of a Protective Container for Combined Blast, Fragmentation and Thermal Effects from Energetic Materials Detonation
Autorzy:
Ahmed, Khurshid
Malik, Abdul Qadeer
Powiązania:
https://bibliotekanauki.pl/articles/27788212.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
energetic materials
fireball
blast
fragmentation
container
mitigation
Opis:
A composite protective container is experimentally investigated to counter combined blast, fragmentation and thermal effects from either a 1.0 kg bare or 0.6 kg cased (pipe-bomb) TNT equivalent charge. Commercially available shaving foam was used as the internal filling material. The shaving foam quenched the initial fireball and afterburning reactions. The composite case contained the blast overpressure and prevented the escape of primary fragments. The novel combination of extended polystyrene (EPS) foam, bakelite and polyurethane (PU)-silica composite employed at the container base provided protection against in-contact explosive detonation. Maximum peak reflected overpressure of 86.87 kPa (12.6 psi) was measured at 1.0 m distance for 1.0 kg TNT equivalent charge detonation inside the container. The protective container provided 97% peak overpressure reduction compared to the equivalent surface burst detonation. The fragmentation and their impact on container were simulated using a coupled SPH-ALE approach. Steel casing fragments weighing up to 8.0 g with velocities in the range of 1260-1550 m/s were produced and impacted the container. This investigation provides a basis in the design of a device to combat terrorist devices in public places, high profile meeting venues and transportation systems.
Źródło:
Central European Journal of Energetic Materials; 2022, 19, 2; 135--157
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smells of the City. Fragmentation and Privatisation of City Space from an Osmosociological Perspective
Autorzy:
Szczepański, Marek S.
Ślęzak-Tazbir, Weronika
Powiązania:
https://bibliotekanauki.pl/articles/414353.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Warszawski. Instytut Ameryk i Europy. Centrum Europejskich Studiów Regionalnych i Lokalnych (EUROREG)
Tematy:
studia miejskie
fragmentacja
prywatyzacja
osmosocjologia
urban studies
fragmentation
privatisation
osmosociology
Opis:
From the five senses that men have the sense of sight and touch, though seemingly the most acute, are limited when it comes to examining space and all phenomena that occur in it. Moreover, it is much more difficult to examine space through the sense hearing and it is almost impossible to taste it, even if it is humanized. Another human sense i.e. the sense of smell which enables us to recognize different scents may, due to its transitory and temporary nature, appear to be useless when it comes to examining space. Nonetheless, if we concentrate on all the scents that fill the space, they are frequently a more distinctive and prominent landmark than, for example, a building or a road. Therefore, it seems to be vital that the perspective of sociology of scent be adopted if we want to make a more in-depth analysis and interpretation of space dynamics. The scents that fill a chosen urban and suburban old industrial region are analysed and observed in this study. What are the scents that fill urban space? On the one hand there is the tempting scent of private space, which is filled with artificial perfumes and air fresheners. However, on the other hand there is the unpleasant and offensive odour from neglected backyards and outhouses; the odour coming from a local beer stand and an aromatic bouquet of cognac in a hotel bar; obnoxious odours emitted by mine slag heaps and the scent of the pine forest. We aim to show that a wide range of different smells, ranging from delicate and lovely scents to offensive and foul odours, have a growing influence on fragmentation and privatization of urban space.
Źródło:
Studia Regionalne i Lokalne; 2009, numer specjalny / special issue; 102-124
1509-4995
Pojawia się w:
Studia Regionalne i Lokalne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
La fragmentation actancielle: vers une analyse « interfacielle » des infinitives de perception directe
An Alternative Analysis of Syntactic Infinitives of Direct Perception Conducted with the Aid of the Concept of Fragmentation
Autorzy:
Marsac, Fabrice
Powiązania:
https://bibliotekanauki.pl/articles/1051375.pdf
Data publikacji:
2012-01-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
infinitive constructions governed by a verb of perception
the concept of fragmentation
syntax-semantics interface
linguistics and computer science
Opis:
This study proposes an alternative analysis of syntactic infinitives of direct perception: the current approach, spanning various fields of linguistics, attempts to articulate the morphosyntactic characteristics of these structures with their different logical, semantic, cognitive, lexical and grammatical properties. The perspective adopted for this purpose is based on a well known computer process: (de) fragmentation.
Źródło:
Studia Romanica Posnaniensia; 2012, 39, 4; 85-97
0137-2475
2084-4158
Pojawia się w:
Studia Romanica Posnaniensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation Method of Assessing the Destructive Effect of Fragmentation
Symulacyjna metoda oceny skuteczności rażenia odłamkowego
Autorzy:
Podciechowski, Maciej
Żygadło, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/403751.pdf
Data publikacji:
2019
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
fragmentation effectiveness
simulation of destruction efficiency
skuteczność rażenia odłamkowego
symulacja skuteczności rażenia
Opis:
The paper presents an outline of a simulation method for assessing the fragmentation effectiveness of ammunition equipped with proximity fuses. The method, developed at the Military University of Technology (MUT – Warsaw, Poland) is based on an unambiguous fragmentation action model with a defined and justified degree of simplification. It is a versatile method suitable for all weapons, designed to test the effects of individual parameters describing shells decomposition on the effectiveness of their fragmentation.
W artykule przedstawiono zarys symulacyjnej metody oceny skuteczności rażenia odłamkowego amunicji wyposażonej w zapalniki zbliżeniowe. Metoda, opracowana w Wojskowej Akademii Technicznej, oparta jest na jednoznacznym modelu działania odłamkowego o zdefiniowanym i uzasadnionym stopniu uproszczenia. Jest uniwersalną, przeznaczoną dla wszystkich środków rażących, metodą badań wpływu poszczególnych parametrów opisujących rozprysk skorupy odłamkowej na skuteczność rażenia odłamkowego.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2019, 10, 1 (35); 143-152
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical simulation of deformation and fragmentation of fractal-like nanoaggregates
Autorzy:
Żywczyk, Łukasz
Moskal, Arkadiusz
Przekop, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/185230.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractal-like aggregate
discrete element modelling
fragmentation
restructuration
agregat fraktalny
modelowanie elementów dyskretnych
podział
restrukturyzacja
Opis:
Aflexible fractal-like aggregate modelwas used to study deformation and fragmentation of the structure of fractal-like aggregates via their impaction with rigid rough surface.Aggregateswere conveyed one at the time towards a surface under vacuum conditions. The number of primary particles remaining in each fragment, ratio of average fragment radius of gyration after impaction to the average fragment initial radius of gyration and ratio of average coordination number to the initial coordination number were monitored for each individual aggregate. Results demonstrate that depending on the impact velocity, the fractal dimension of the aggregate, the strength of bonds between primary particles, the stiffness of the aggregate structure and the diameter of primary particle composing an aggregate, restructuring or breakage of the aggregate occur. Moreover, in the analysis of the ratio of coordination number of aggregates after impaction to the initial coordination number, three regimes were distinguished: first no deformation at low impact velocities, second restructurisation regime and finally fragmentation regime where partial or total fragmentation of aggregates was observed.
Źródło:
Chemical and Process Engineering; 2019, 40, 4; 377--397
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relics of extreme land fragmentation in białystok
Relikty szachownicy gruntowej w białymstoku
Autorzy:
Bajerska, Aleksandra
Boratyńska, Urszula
Łapińska, Halina
Szewczyk, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/24200538.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
Białystok
land fragmentation
cadastral structures
rozdrobnienie gruntów
szachownica gruntów
struktura podziałów własnościowych
Opis:
Białystok, the capital of the Podlaskie region, N-E Poland, covers 102 km² and has ca. 293 000 inhabitants. In recent centuries the city has been incorporating its suburban villages. In effect, relics of village-like plot structures have been retained and immersed into the whole cadastral structure of the city. In the article, distribution of cadastral relics of extreme land fragmentation have been surveyed, based on two www GIS portals: http://gispodlasia.wrotapodlasia.pl and https://gisbialystok.pl. We extracted data about areas with extremely narrow and elongated plot structure, i.e. plots which are 1 to 20 m narrow while hundreds of meters long, sometimes of geometric proportions even as extreme as 1:600. About 50 areas with relics of extreme land fragmentation have been recognized, of which 15 areas seem to be essential for the city functional structure. Therefore, Białystok can be seen as an unique city in terms of its rural-derived structure with numerous remnants of extreme land frgmentation.
Białystok to stolica województwa podlaskiego o zaludnieniu (w 2022 roku) 293.028 mieszkańców na obszarze 102 km². W przeszłości Białystok rósł, wchłaniając okoliczne wsie, czego pozostałością jest lokalnie zachowana specyficzna „wiejska” struktura podziałów gruntowych (katastralnych). Korzystając z internetowych portali udostępniających usługi informacji przestrzennej (w tym http://gispodlasia.wrotapodlasia.pl oraz https://gisbialystok.pl), rozpoznano jej relikty będące pozostałościami szachownicy gruntowej i przedstawiono w artykule ich lokalizację (rozkład przestrzenny) na obszarze miasta. Uwagę skupiono na obszarach pokrytych działkami geodezyjnymi węższymi niż 20 m, a długimi na kilkaset metrów, o proporcjach boków węższego do szerszego niekiedy sięgających nawet 1:600. Rozpoznano około 50 takich obszarów, z których 15 uznano za najbardziej istotne dla funkcjonowania miasta. Zatem Białystok wydaje się przestrzennym unikatem, wyróżniającym się obfitością reliktów szachownicy gruntowej.
Źródło:
Architecturae et Artibus; 2023, 15, 1; 1--12
2080-9638
Pojawia się w:
Architecturae et Artibus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie głowicy odłamkowej z wykorzystaniem sprzężenia ALE
Numerical Modeling of Fragmentation Warhead Using ALE Feedback
Autorzy:
Konarzewski, M.
Panowicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/403945.pdf
Data publikacji:
2016
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
mechanika
metoda elementów skończonych
dynamika
głowica odłamkowa
mechanics
finite elements method
dynamics
directed fragmentation warheads
Opis:
W artykule zaprezentowano metodykę numerycznego modelowania głowic odłamkowych wraz z przyjętymi założeniami oraz wstępne wyniki analiz numerycznych otrzymanych na jej podstawie. Istnieje kilka metod numerycznego modelowania zjawisk fragmentacji. Jedną z najpopularniejszych, wykorzystaną w poniższej pracy, jest zastosowanie metody ALE wraz ze sprzężeniem płyn – ciało stałe. Analizie poddano głowicę odłamkową w formie walca o długości 100 i średnicy 80 mm, składającą się z czterech podstawowych elementów: obudowy zewnętrznej, obudowy wewnętrznej, materiału wybuchowego oraz warstwy odłamkującej. Warstwa odłamkująca zbudowana jest z żywicy wraz z zanurzonymi w niej metalowymi kulkami, których celem jest stworzenie chmury odłamków po detonacji głowicy. Rozlot odłamków jest charakteryzowany przez kilka kluczowych wartości, takich jak prędkość odłamków czy ich rozkład w przestrzeni. Przygotowano trójwymiarowy model głowicy odłamkowej, wykorzystując oprogramowanie Hypermesh, a następnie przeprowadzono analizy numeryczne z wykorzystaniem programu LS-Dyna. W wyniku przeprowadzonych analiz określono maksymalną prędkość uzyskiwaną przez odłamki oraz ich rozkład przestrzenny.
The article presents introduction to numerical simulation of directed fragmentation warheads used for destroying projectiles with shaped charges. There are several methods for numerical modelling of such a phenomenon. One of the most common methods is to use Arbitrary Lagrangian-Eulerian (ALE) method alongside with fluid-structure interaction (FSI). Fragmentation warhead, in the form of 100 mm length cylinder with 80 mm diameter, consists of four main parts: internal and external case, explosive material, and fragmentation liner. Fragmentation liner is built from resin with submerged metallic spheres. After detonation, the liner fragments into many parts. Flight of the debris is characterized by a number of key values such as speed of the debris or their distribution in space. A three-dimensional model of a fragmentation warhead was prepared using Hypermesh software and numerical analyses were performed using LS-Dyna software. As a result of numerical analyses, the maximum velocity of the fragmentation liner and spatial distribution of fragments were determined.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2016, 7, 2 (24); 105-116
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of land fragmentation for the purpose of land consolidation works as exemplified by the Pasym commune
Autorzy:
Dudzińska, M.
Kocur-Bera, K.
Powiązania:
https://bibliotekanauki.pl/articles/100576.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
land consolidation
land fragmentation
land plot
farm
scalanie gruntów
podział gruntów
gospodarstwo rolne
Opis:
In Poland there are no uniform regulations and legal norms establishing the principles of space assessment aimed at determining the demand for land consolidation works. The article is an attempt to answer the following question: what factors are important today in determining the demand for this kind of works? The factors were set on the basis of professional literature and on a questionnaire conducted on a group of specialists in land consolidation and on farmers. The aim of the questionnaire was to examine the preferences of chosen land fragmentation factors. The survey was carried out in the Pasym commune, situated in the Warmia and Mazury Voivodeship. The results of the research show that the land fragmentation mostly depends on the number of land plots (parcels) in a farm, their distance to a settlement and the size of a land plot. The least significant factors in this respect proved: a size of a farm and its irregular shape. The research has confirmed a general tendency in spatial changes of small farms in the Warmia and Mazury Voivodeship.
Źródło:
Geomatics, Landmanagement and Landscape; 2014, 2; 31-43
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bin packing with restricted item fragmentation
Autorzy:
Pieńkosz, K.
Powiązania:
https://bibliotekanauki.pl/articles/205659.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
bin packing
fragmentable items
approximation algorithms
Opis:
In this paper we consider a generalization of the bin packing problem, in which it is permitted to fragment the items while packing them into bins. There is, however, a restriction that the size of each piece of the fragmented item cannot be smaller than a given parameter β An interesting aspect of such a model is that if β= 0, then the problem can be easily solved optimally. If β is large enough, meaning, in fact, that the fragmentation is not allowed, we get the classical bin packing problem, which is NP-hard in the strong sense. We present approximation algorithms for solving the problem and analyse their properties. The results of computational experiments and conclusions relating to the effectiveness of the algorithms are also presented.
Źródło:
Control and Cybernetics; 2014, 43, 4; 547-556
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
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