1,354,821 research outputs found
Late socialist revolutionary achievements of the township of Filipov: Cahiers du CEFRES N° 30, Le communisme à partir des sociétés - Communism from the viewpoint of societies
No full textInternational audienceFilipov is a township of three thousand, in the border and mostly agricultural county of Dubno, in Eastern Moravia. The author analyses how, though Filipov took a long time to recover from the post-war collapse and the socialist transformation, it gradually became a stable and prosperous municipality in a quiet county where, even as late as 1989, there was almost no indication that some changes in its well established way of life would soon arrive. It seems that when the changes occurred, the people of Filipov successfully passed through the phases of the Revolution (or, more precisely, the transfer of power) in a way that mirrored exactly how changes occurred at the centre. Indeed, it was not until the period 1997 to 1999, when the township was studied, that Filipov was forced to confront a crisis because of overspending on development motivated by the “Construction Spirit”, a legacy from Real Socialism. Kabele therefore asks the question why the people of Filipov completed a “Velvet Revolution” when the town was doing well, and why did it fail
Numerical Simulation of the Flow Around Two Bluff Bodies Separated by a Gap
No full text[Filipov Kostadin; Филипов Костадин]; [Tabakova Sonia; Табакова Соня]2010 Mathematics Subject Classification: 76D05, 76M12
VLOGA BONITETNIH HIŠ V AKTUALNI FINANČNI KRIZI
No full textThe Subprime crisis that occurred in 2007-2008, was the most disturbing and severe crisis since The Great Depression. The global stock market indexes and housing prices noted a sharp drop. Big corporations, conglomerates, defaulted, were acquired and bailed out, since they could not meet their financing obligations. Substantial number of people lost their jobs worldwide and a lot of sectors in the economy were struggling.
Within this Bachelor seminar paper, it is presented how the credit rating agencies influenced the credit crunch. The main issue discussed in this seminar work is the role of the rating agencies in one of the greatest crushes in history. They (the agencies), actually, participated in creating the structured financial products, which during the housing bubble were increasingly trading. These structured financial products were very complex and highly risky and maybe, the most crucial cause of the crisis.
First, in the seminar paper it is described how the agencies work and their origins. As in the last century, Standard and Poor’s and Moody’s, emerged to great power in the financial system with assigning ratings to issuers of debt. This position in the financial world that the agencies held, has brought many academicians to doubting the possible moral hazard problems within the credit ratings business. Furthermore, it is explained how the financial turmoil emerged and the trends that preceded the credit crunch. Questions regarding the role of the agencies in the securitization process are discussed. For instance, were the rating agencies biasedwere the ratings on the structured financial products inflated and if so, what were the incentives for it?
Several theories and empirical evidence has been put forward concerning the importance of the ratings in the securitization process. It is concluded in this paper, that the ratings assigned to the financial derivatives were inflated and the agencies noted increased returns from it, which presents the incentives of the agencies during the housing bubble. These empirical findings also indicate of moral hazard problem within the ratings system.Finančna kriza 2007-2008 je bila najbolj huda in moteča po Veliki Depresiji v 1929. Nastale so ogromne izgube, ki imajo velike posledice na gospodarstvo povsodi v svetu. Dosti družb so šle v stečaju zaradi nezmožnosti izplačila finančnih obveznosti, kot enega izmed največjih investicijskih bankah Lehman Brothers. Bear Stearns investicijska banka je bila odkupljena od J.P. Morgan & Chase, potem je bilo veliko javnih potkrepah za korporacije ki so bili \u27\u27too big to fail\u27\u27, kot je primer z zavarovalnice AIG. Poleg tega so borzne indekse strmo padle, cene nepremičnin so bili rekordno znižane, likvidnost denarnega trga je evaporirala in to je povzročilo številne intervencije centralne banke. Precejšno število ljudi je izgubilo svoje delovno mesto po vsem svetu in veliko sektorjev gospodarstva so bili v problemah. Ker je bilo dovoljeno veliko zadolževanje (eng:leveraging) ter prevečjo trgovanje z neregulirane tvegane finančne produkte, je prišlo tudi do probleme, oz., krizna državnega dolga.
Torej, v hipotekarni krizi, bonitetne agencije so imeli posebno nalogo. Ker so novi finančni instrumenti postali zelo aktuelnih in so zasegale velik delež finančnega trga, bonitetnih hiš so z dodeljevanje bonitetnih ocen za vsak instrument pošiljale informacij do investitorji v zvezi z kredibiliteta izdajatelja teh instrumentov. Ti instrumenti so bili dejansko izvedeni finančni instrumenti ki so nastale z združevanjem številnih portfeljev vrednostih papirjev, ki so jih potem strukturirale v obrokih in prodale investitorje, glede na tveganost neplačila. Instrumente so strukturirane finančne produkte in so zelo komplekse, vendar zelo donosni in, kot se je izkazalo, zelo tvegane. Strukturirane finančni produkti so, morda, najpomemgnejši vzrok krize. Ker agencije niso mogli dodeliti ustrezne ocene, z napačnih bonitetnih ocenah so reklamirale produkte za investitorje in s tem, so postali en vzrok več za tistem kar se zgodilo v letih 2007-2008.
Glavni problem obravnan v diplomskem seminaru je, kakšno je vlogo ki so imeli bonitetnih hiš v finančni krizi, kako so vplivali na finančno krizo in kako velik je njihov učinek. Bonitetne agencije, bolj konkretno, \u27\u27velika trojka\u27\u27-Moody\u27s, Standard & Poor\u27s in Fitch- so imeli zelo zanimiv del v celotni igri, ki je postavila temelje za hipotekarno krizo. Torej glavno vprašanje je, \u27\u27kaj točno so bonitetnih hiš naredili da so povzročili takšno krizo ki bi imela tak katastrofalni učinek na gospodarstvu?\u27\u27. V zvezi z glavno raspravo vo tem seminarske naloge, še drugih vprašanj se postavaljajo o tem, ali agencije so dali napihnjene ocene in kakšne so njihove spodbude. Ali je moralni hazard prisoten v sistem bonitetnih ocen in, ali je tudi bil prisoten konflikt interesov? Vse to so pomembna vprašanja in detalji ki se nanašajo na bonitetne agencije in jih treba pregledati, da se predstavi končnega sklepa o vlogi bonitetnih agencij v krizi. Torej, glavni cilj diplomskega seminarja je, odgovori teh vprašanj, predstaviti razne teorije v zvezi teh problemov in tudi prikazati eno empirično sliko o vlogi bonitetnih hiš.
Najprej v seminarski nalogi so predstavljenje bonitetnih agencij in njihove lastnosti, ter modele dodeljitev bonitetnih ocen in lastniki agencij. Že iz časa prve oficijalno objavljene ocene od John Moody, v 1909, beonitetnih hiš so dospele do velik kredibilitet in moči vo finančnem sistemu. Dosti avtorjev so kritikovali da so agencije delali v oligopol in da je v takšen sistem vedno pristen moralni hazard. Kjub temu, agencije z največji vpliv oziroma delež na finančnem trgu so, Moody\u27s Investor Service, Standard & Poor\u27s, ter Fitch Ratings. Potem, vo diplomskem nalogu je predstavljena vo podrobnosti finančna kriza iz 2007-2008 in trendi ki so privedle do krizi. Vendar pa proces securitizacije oziroma nastajanje teh kompleksnih strukturiranih finančnih produktov ki so bili glavni vzrok za finančni krizo, je tudi eksplicitno predstavljen.
Glede na to kako se odvijala kriza i kaj je bilo glavni vzork za te pro
'Butterfly': a residual bone independent technique for one-stage sinus lift
No full textA 29-year-old woman with an extreme pneumatisation of the maxillary sinus and a missing molar was treated with one-stage sinus lifting and implant placement in a novel surgical approach
AdMaTilE: Visualizing Event-Based Adjacency Matrices in a Multiple-Coordinated-Views System (Poster Abstract)
No full textConventional dynamic networks represent network changes via a discrete sequence of timeslices, which usually entails loss of information on fine-grained dynamics. Recently, event-based networks emerged as an approach to model this temporal (event-based) information more precisely. Adjacency-matrix-based visualizations of temporal networks are under-investigated in related literature and present a promising research direction for network visualization. Our approach AdMaTilE (Adjacency Matrix and Timeline Explorer) is designed to visualize event-based networks using multiple matrix views, timelines, difference maps, and staged transitions
Tailoring stiffness of deployable origami structures
No full textEmbargo set by: Seth Robbins for item 98713
Lift date: 2019-03-01T17:03:32Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemOrigami has gained popularity in science and engineering because a compactly stowed system can be folded into a transformable 3D structure with increased functionality. Origami can also be reconfigured and programmed to change shape, function, and mechanical properties. In this thesis, we explore origami from structural and stiffness perspectives, and in particular we study how geometry affects origami behavior and characteristics. Understanding origami from a structural standpoint can allow for conceptualizing and designing feasible applications in all scales and disciplines of engineering.
We improve, verify, and test a bar and hinge model that can analyze the elastic stiffness, and estimate deformed shapes of origami. The model simulates three distinct behaviors: stretching and shearing of thin sheet panels; bending of the flat panels; and bending along prescribed fold lines. We explore the influence of panel geometry on origami stiffness, and provide a study on fold line stiffness characteristics. The model formulation incorporates material characteristics and provides scalable, and isotopic behavior. It is useful for practical problems such as optimization and parametrization of geometric origami variations.
We explore the stiffness of tubular origami structures based on the Miura-ori folding pattern. A unique orientation for zipper coupling of rigidly foldable origami tubes substantially increases stiffness in higher order modes and permits only one flexible motion through which the structure can deploy. Deployment is permitted by localized bending along folds lines, however other deformations are over-constrained and engage the origami sheets in tension and compression. Furthermore, we couple compatible origami tubes into a variety of cellular assemblages that can enhance mechanical characteristics and geometric versatility. Practical applications such as deployable slabs, roofs, and arches are also explored.
Finally, we introduce origami tubes with polygonal cross-sections that can reconfigure into numerous geometries. The tubular structures satisfy the mathematical definitions for flat and rigid foldability, meaning that they can fully unfold from a flattened state with deformations occurring only at the fold lines. From a global viewpoint, the tubes do not need to be straight, and can be constructed to follow a non-linear curved line when deployed. From a local viewpoint, their cross-sections and kinematics can be reprogrammed by changing the direction of folding at some folds.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2018-12-01The student, Evgueni Filipov, accepted the attached license on 2016-11-30 at 15:41.The student, Evgueni Filipov, submitted this Dissertation for approval on 2016-11-30 at 15:54.This Dissertation was approved for publication on 2016-12-01 at 14:38.DSpace SAF Submission Ingestion Package generated from Vireo submission #10379 on 2017-02-28 at 14:42:29Made available in DSpace on 2017-03-01T17:01:48Z (GMT). No. of bitstreams: 3
FILIPOV-DISSERTATION-2016.pdf: 51748947 bytes, checksum: 11bb5abe5892340b0bbfbe4981b2c257 (MD5)
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Previous issue date: 2016-12-01Embargo set by: Seth Robbins for item 98713
Lift date: 2019-03-01T17:02:22Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 98713
Lift date: 2019-03-01T17:05:02Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 98713
Lift date: 2019-03-01T17:06:55Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemLimited Restriction Lifted for Item 98713 on 2019-03-02T10:15:33Z
A Ten-Year Molecular Survey on Parvoviruses Infecting Carnivores in Bulgaria
No full textParvoviruses represent the most important infectious agents that are responsible for severe to fatal disease in carnivores. This study reports the results of a 10-year molecular survey conducted on carnivores in Bulgaria (n = 344), including 262 dogs and 19 cats with gastroenteritis, and 57 hunted wild carnivores. Real-time polymerase chain reaction (qPCR), followed by virus characterization by minor groove binder (MGB) probe assays, detected 216 parvovirus positive dogs with a predominance of canine parvovirus type 2a (CPV-2a, 79.17%) over CPV-2b (18.52%) and CPV-2c (2.31%). Rottweilers and German shepherds were the most frequent breeds among CPV-positive pedigree dogs (n = 96). Eighteen cats were found to shed parvoviruses in their faeces, with most strains being characterized as FPLV (n = 17), although a single specimen tested positive for CPV-2a. Only two wild carnivores were parvovirus positive, a wolf (Canis lupus) and a red fox (Vulpes vulpes), both being infected by CPV-2a strains
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Not-XOR (NXOR) Logic Gate Realized with Enzyme-Catalyzed Reactions: Optical and Electrochemical Signal Transduction
No full textThe studied enzyme-based biocatalytic system mimics NXOR Boolean logic gate, which is a logical operator that corresponds to equality in Boolean algebra. It gives the functional value true (1) if both functional arguments (input signals) have the same logical value (0,0 or 1,1), and false (0) if they are different (0,1 or 1,0). The output signal producing reaction is catalyzed by pyrroloquinoline quinone-dependent glucose dehydrogenase (PQQ-GDH), which is inhibited at acidic and basic pH values. Two other reactions catalyzed by esterase and urease produce acetic acid and ammonium hydroxide, respectively, shifting solution pH from the optimum pH for PQQ-GDH to acidic and basic values (1,0 and 0,1 input combinations, respectively), thus switching the enzyme activity off (output 0). When the input signals are not applied (0,0 combination) or both applied compensating each other (1,1 combination) the optimum pH is preserved, thus keeping PQQ-GDH running at the high rate (output 1). The biocatalytic cascade mimicking the NXOR gate was characterized optically and electrochemically. In the electrochemical experiments the PQQ-GDH enzyme communicated electronically with a conducting electrode support, thus resulting in the electrocatalytic current when signal combinations 0,0 and 1,1 were applied. The logic gate operation, when it was realized electrochemically, was also extended to the biomolecular release controlled by the gate. The release system included two electrodes, one performing the NXOR gate and another one activated for the release upon electrochemically stimulated alginate hydrogel dissolution. The studied system represents a general approach to the biocatalytic realization of the NXOR logic gate, which can be included in different catalytic cascades mimicking operation of concatenated gates in sophisticated logic circuitries
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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