217 research outputs found
Abstraction for concurrent objects
No full textConcurrent data structures are usually designed to satisfy correctness conditions such as sequential consistency or linearizability. In this paper, we consider the following fundamental question: What guarantees are provided by these conditions for client programs? We formally show that these conditions can be characterized in terms of observational refinement. Our study also provides a new understanding of sequential consistency and linearizability in terms of abstraction of dependency between computation steps of client programs. © 2010 Elsevier B.V. All rights reserved
The activities of Ivan Filipovic in the field of permanent education of teachers through institutions od public and school libraries (on the ocassion of this 200th birth anniversary)
No full textCilj. Autori su u ovom radu istražili aktivnosti, ulogu i značaj Ivana Filipovića u području permanentnog stručnog usavršavanja hrvatskih učitelja, realiziranog kroz: stručne udruge, javne i s kolske knjižnice. Rad se temelji na analizi pedagoške dokumentacije, od kojih jedan dio ima karakter objavljene građe i primarnih izvora. Analizirana dokumentacija opisana je, objašnjena i prikazana unutar predviđenih kategorija: permanentno stručno usavršavanje hrvatskih učitelja, kotarskih učiteljskih društava, kao i javnih i s kolskih knjižnica.
Pristup. Ivan Filipović sa suradnicima utemeljio je permanentno stručno usavršavanje hrvatskih učitelja na Drugoj općoj hrvatskoj učiteljskoj skupštini, održanoj u Petrinji 1874. godine. Ivan Filipović sa suradnicima je pripremio, predsjedavao i sudjelovao u formiranju zaključaka na navedenoj općoj hrvatskoj učiteljskoj skupštini. Središnje pitanje na Drugoj općoj hrvatskoj učiteljskoj skupštini glasilo je Kako da se daljnje obrazovanje pučkih učitelja nastavlja i unapređuje?
Rezultat. Na Drugoj općoj hrvatskoj učiteljskoj skupštini usvojena je koncepcija permanentnog stručnog usavršavanja kroz individualne i skupne oblike. Za realizaciju skupnog permanentnog stručnog usavršavanja učitelja predviđeno je osnivanje kotarskih učiteljskih društava, kao dobrovoljnih udruga hrvatskog učiteljstva. Kako bi se ono operacionaliziralo, istovremeno je predloženo da se pri svakom kotarskom učiteljskom društvu otvore knjižnice s čitaonicama. Kako bi se za njih osigurala, opća i stručna literatura na hrvatskom jeziku, već je ranije Ivan Filipović 1871. godine osnovao Hrvatski pedagoško-književni zbor.
Praktična primjena. Pored navedenih aktivnosti, primjetljiv je doprinos Ivana Filipovića na području permanentnog stručnog usavršavanja kroz zakonodavnu aktivnost. U prvom hrvatskom školskom zakonu iz 1874. godine jedno posebno poglavlje posvećeno je produžnom obrazovanju učitelja. Neosporno je dokazana značajna aktivnost Ivana Filipovića u stvaranju koncepcije permanentnog stručnog usavršavanja hrvatskih učitelja, a posebno je značajan njegov doprinos na stvaranju potrebne stručne infrastrukture kroz kotarska učiteljska društva, školske i javne knjižnice i izdavačke institucije.Purpose. The authors of this work have explored the activities, the role and the significance of Ivan Filipovic in the field of permanent professional training of Croatian teachers, implemented through professional associations, public and school libraries. The work is based on the pedagogical documentation analysis, a part of which has the character of published materials and primary sources. The documentation analysed is described, explained and displayed within the specified categories: permanent professional development of Croatian teachers, County teachers' associations, as well as public and school libraries.
Approach/Methodology/Design. Ivan Filipovic and his colleagues founded the permanent professional training of Croatian teachers at the Second General Croatian Teachers' Assembly, held in Petrinja in 1874. He and his colleagues prepared, chaired and participated in the formulation of the conclusions of the above-mentioned assembly. The central question at the Second General Croatian Teachers' Assembly was: How to continue and improve the further education of teachers?
Results. The Second General Croatian Teachers Assembly adopted the concept of permanent professional development of teachers through individual and group forms. In order to implement the joint permanent professional development of teachers, it is provided to establish County teachers' associations as voluntary associations Croatian teachers. At the same time, it was proposed that libraries with reading rooms be opened at each County teachers' society in order to make it operational. And in order to provide them with general and professional literature in Croatian, the Croatian Pedagogical and Literary Association was founded in 1871. on the proposal of Ivan Filipovic .
Practical application. In addition to the above activities, Ivan Filipovic 's contribution to the field of continuous professional development through legislative achivihes is also noticeable. In The First Croatian School Law of 1874, there is a special chapter devoted to the continuing education of teachers. The significant activity of Ivan Filipovic in creating the concept of permanent professional training of Croatian teachers has been indisputably proven, and his contribution to the creation of a special professional infrastructure through the county teachers' associations, school and public libraries and publishing institutions as well
Fibromyalgia: Understanding, Diagnosis and Modern Approaches to Treatment
No full textFibromyalgia (FM) is a chronic condition characterized by generalized musculoskeletal pain associated with other symptoms, especially sleep and mood disorders, fatigue, and cognitive dysfunctions. The etiopathogenesis of FM is not sufficiently known, and regardless of numerous research, the clinical presentation is nonspecific, which makes it difficult to approve a timely diagnosis and, subsequently, an adequate therapeutic approach. Genetic, hormonal, immunological, and environmental factors are cited as potential factors in the development of this condition. Diagnosis is based on a clinical approach and known diagnostic criteria, while additional methods, such as radiographic, magnetic resonance, or laboratory analyses, can be useful to exclude other conditions. The heterogeneity of FM significantly impacts both diagnosis and treatment, as it presents a wide spectrum of symptoms that vary in severity, combinations, and underlying contributing factors. This variability is a challenge for clinicians and requires a holistic, comprehensive, multidisciplinary, patient-centered approach. According to The European League Against Rheumatism (EULAR) from 2016, treatment begins with patient education and involves the simultaneous application of pharmacological and nonpharmacological treatments. The application of only pharmacological or nonpharmacological treatment is most often not successful. Due to differences in pain threshold, psychological factors, and comorbidities, patients may respond differently to the same interventions. Although there is no universal treatment, this review brings up the fact that the timely recognition of symptoms and a tailored treatment with a patient-centered plan can significantly improve the quality of life of patients
Synthesis, structures and electronic properties of Co(III) complexes with 2-quinolinecarboxaldehyde thio- and selenosemicarbazone: a combined experimental and theoretical study
No full textCobalt(III) complexes derived from thio-and selenosemicarbazone ligands have been studied to elucidate the nature and consequences of S to Se substitution on their possible biological activity. Solid state structures of cobalt(III) complexes with bis-tridentate coordinated 2-quinolinecarboxaldehyde thio-and selenosemicarbazone were determined by single crystal X-ray diffraction analysis. The complexes were also characterized by spectroscopic methods and cyclic voltammetry. Electronic properties of the complexes were studied using DFT and TD-DFT methods. Finally, evident in vitro antioxidant activity of the complexes was demonstrated
Technologies of gender: Soviet literature and film in the 1920s and 1930s
No full textMy dissertation, “Technologies of Gender: Soviet Literature and Film in the 1920s and 1930s,” examines the vital role technology and machines – both actual and imagined – play in defining the ‘new Soviet man’ and ‘new Soviet woman’ in early Soviet culture. As I argue in my dissertation, the period of the 1920s and 1930s witnesses a radical change in the perception of physicality brought about by new technology. My project elucidates how the rise of technology and technological discourse in Soviet culture remakes the body and reconfigures traditional gender roles, producing a Soviet cyborg (in Donna Haraway’s terms), first male, then female.
In the twenties, in order to combat mortality and render the body perfect, male authors engage in writing about sophisticated technologies based on experimental scientific and medical research (as in Pilnyak’s 1928 A Matter of Death and Platonov’s 1927 The Ethereal Tract). These technocratic utopian imaginings introduce the cyborg that has overcome all mortal constraints, including biological procreation (Platonov). While in the predominantly male avant-garde culture women’s role and access to technology are reduced, I show that in socialist realist texts and films of the 1930s, the reverse takes place: women instead of men now have a privileged relationship to machines. Women artists and workers contest the hyper-masculinist culture and through female cyborgism remap their bodies and consciousness to create their own feminist politics (Shaginian’s 1931 novel The Hydroelectric Plant, Shub’s 1932 film K.Sh.E., and Pasha Angelina’s all-female tractor brigade). The official culture of the thirties refashions itself in the feminine idiom to demonstrate that the never-ending advancement under Stalin exceeds the revolutionary achievements of the 1920s. This obsession leads to the creation of the Soviet heroine of labor, the female cyborg embodied in the image of the woman at the tractor wheel riding into the bright future, the ultimate symbol of transformed Stalinist technocratic society (as in Eisenstein’s General Line (1929), Pyriev’s Tractor Drivers (1939), and Alexandrov’s Bright Path (1940). The project considers both well-known and lesser-known writers/texts and films. At stake is a new way of looking at both literature and cinema of the 1920s-1930s from the point of view of gender technologies and technologies of gender.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-08-01The student, Marina Filipovic, accepted the attached license on 2019-07-02 at 14:00.The student, Marina Filipovic, submitted this Dissertation for approval on 2019-07-02 at 14:20.This Dissertation was approved for publication on 2019-07-02 at 17:03.DSpace SAF Submission Ingestion Package generated from Vireo submission #14131 on 2019-11-26 at 13:04:20Made available in DSpace on 2019-11-26T20:49:19Z (GMT). No. of bitstreams: 2
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Infrastructures for data dissemination and in-network storage in location-unaware wireless sensor networks:
No full textFor wireless sensor networks with many location-unaware nodes, we propose mechanisms to organize nodes in an infrastructure of intersecting paths, suitable for efficient data dissemination and event localization. As an underpinning for such an infrastructure, we propose a protocol, dubbed BeSpoken, that steers data transmissions along a straight path called a spoke. The BeSpoken protocol implements a simple, spatially recursive process, where a basic set of control packets and a data packet are exchanged repeatedly among daisy-chained relays that constitute the spoke. Hence, a data packet originated by the first relay makes a forward progress in the direction of the spoke. Despite the
simplicity of the protocol engine, modeling the spoke process is a significant challenge. The protocol directs data transmissions by randomly selecting relays to retransmit data packets from crescent-shaped areas along the spoke axis. The resulting random walk of the spoke hop sequence may be modeled as a two dimensional Markov process. Analysis of this model results in design rules for protocol parameters that minimize energy consumption while ensuring that spokes propagate far enough and have a limited wobble with respect to the spoke axis. In addition, adaptive mechanisms are proposed that increase the propagation distance under the same energy per spoke hop.
Finally we show how the spokes serve as the building block of a web-like infrastructure that can be used for data source localization and efficient data search and dissemination. In particular, we demonstrate how to increase data availability and persistence through the application of distributed coding techniques over concentric circular subnetworks forming the infrastructure. We study decentralized, Fountain, and network-coding based strategies for facilitating data collection, which rely on the stochastic diversity of data
storage. The goal is to allow for a reduced delay
collection by a data collector who accesses the circular network at a random position and random time. Data dissemination is performed by a set of relays which form a circular route to exchange source packets. The storage nodes within the transmission range of the
route's relays linearly combine and store overheard relay transmissions using random decentralized strategies. An intelligent data collector first collects a minimum set of coded packets from a subset of storage nodes in its proximity, which might be sufficient
for recovering the original packets and, by using a message-passing decoder, attempts recovering all original source packets from this set. Whenever the decoder stalls, a source packet which restarts decoding is polled/doped from its original source node. The random-walk-based analysis of the decoding/doping process furnishes the collection delay analysis with a prediction on the number of required doped packets. The number of doped packets can be
surprisingly small when employed with an Ideal Soliton code degree distribution and, hence, the doping data collection strategy may have the least collection delay when the density of source nodes is sufficiently large. We also demonstrate that network coding makes
dissemination more efficient at the expense of a larger collection delay. Not surprisingly, a circular network allows for a significantly more (analytically and otherwise) tractable strategies relative to a network whose model is a random geometric graph.Ph.D.Includes bibliographical references (p. 124-128)by Silvija Kokalj-Filipovi
The effects of extrinsic and intrinsic rewards on partners' likelihood to refer
No full textIn dieser Masterarbeit wird die Bedeutung von Belohnungen im Empfehlungsmarketing in Business-to-Business (B2B) Beziehungen thematisiert. Empfehlungsmarketing in B2B-Beziehungen wird im Gegensatz zum traditionellen Marketing dazu verwendet, um mittels des Einflusses bestehender Partner neue Kunden zu gewinnen. Im Gegensatz zu früheren Studien unterscheidet diese Arbeit zwei Arten von Belohnungen, die für das Empfehlen angeboten werden: die intrinsischen und die extrinsischen. Intrinsische Belohnungen sind immaterieller, psychologischer Natur, während extrinsische Belohnungen sichtbar und materieller Natur sind. Der Autor untersucht zusätzlich den Moderationseffekt von Marken- und Bindungsstärke auf die Empfehlungswahrscheinlichkeit des Partners. Aufgrund fehlender Forschungsergebnisse im Bereich der Umsetzung von Empfehlungsmarketing in Österreich, verwendet der Autor eine Online-Umfrage, um Daten von Einkaufsabteilungen in B2B-Unternehmen in Österreich zu erheben. Ein wesentliches Resultat dieser Arbeit ist, dass Belohnungen jeglicher Art von Beziehung die Empfehlungswahrscheinlichkeit erhöhen, was auch die Austauschtheorie unterstützt. Weiters ist zu berichten, dass die Empfehlungswahrscheinlichkeit allgemein steigt. Insbesondere sind die extrinsischen Belohnungen für die schwächeren Beziehungen mehr relevant als für die stärkeren, wobei die intrinsischen Belohnungen die Empfehlungswahrscheinlichkeit eher in stärkeren als in schwächeren Beziehungen erhöhen. Anders ausgedrückt: Für langfristige Partner ist eine nicht monetäre Belohnung von größerem Wert, während für Partner, die von Zeit zu Zeit miteinander arbeiten, die monetäre Auszeichnung von Bedeutung ist. Hingegen zeigt sich kein relevanter Effekt, wenn der Lieferant über eine hohe Markenbekanntheit und einen etablierten Markenverband verfügt, die Empfehlungswahrscheinlichkeit des Partners bleibt dabei gleich und der Effekt der beiden Arten von Belohnungen wird weder stärker noch geringer.In this masters thesis the importance of rewards in referral marketing in Business-to-Business (B2B) relationships is introduced. Referral marketing in B2B relationships is used in order to acquire new customers because of the influence of existing partners, rather than through traditional marketing. In contrast to previous researches, this one distinguishes between two types of rewards offered for recommending, intrinsic and extrinsic. Intrinsic rewards are more intangible and psychological and extrinsic rewards are visible and tangible. As well, the author investigates the moderating effect of brand and tie strength on partners referral likelihood. Given the lack of existing research in the area of implementing referral marketing in Austria, the author used an online survey for collecting data from purchasing departments in B2B firms. One overall contribution out of this masters thesis is that rewards increases referral likelihood in every relationship, which supports the exchange theory. More specifically, the extrinsic rewards are more important for weaker rather than for stronger ties and the intrinsic rewards are more increasing the willingness to recommend in stronger than in weaker relationships. To put it differently, for long term partners a non-monetary reward has more value, while for partners which corporate from time to time with each other the monetary award matters. Additionally, suppliers brand in fact does not have any impact on this exchange process. More specifically, there is no relevant effect if the supplier firm is having high brand awareness and a well-established brand association, the partners referral likelihood will remain the same and will not increase nor lower the effect of the two types of a rewards.Sanda Filipovic, BScZusammenfassungen in Deutsch und EnglischMasterarbeit Karl-Franzens-Universität Graz 2018 D 1107
The effects of extrinsic and intrinsic rewards on partners' likelihood to refer
No full textIn dieser Masterarbeit wird die Bedeutung von Belohnungen im Empfehlungsmarketing in Business-to-Business (B2B) Beziehungen thematisiert. Empfehlungsmarketing in B2B-Beziehungen wird im Gegensatz zum traditionellen Marketing dazu verwendet, um mittels des Einflusses bestehender Partner neue Kunden zu gewinnen. Im Gegensatz zu früheren Studien unterscheidet diese Arbeit zwei Arten von Belohnungen, die für das Empfehlen angeboten werden: die intrinsischen und die extrinsischen. Intrinsische Belohnungen sind immaterieller, psychologischer Natur, während extrinsische Belohnungen sichtbar und materieller Natur sind. Der Autor untersucht zusätzlich den Moderationseffekt von Marken- und Bindungsstärke auf die Empfehlungswahrscheinlichkeit des Partners. Aufgrund fehlender Forschungsergebnisse im Bereich der Umsetzung von Empfehlungsmarketing in Österreich, verwendet der Autor eine Online-Umfrage, um Daten von Einkaufsabteilungen in B2B-Unternehmen in Österreich zu erheben. Ein wesentliches Resultat dieser Arbeit ist, dass Belohnungen jeglicher Art von Beziehung die Empfehlungswahrscheinlichkeit erhöhen, was auch die Austauschtheorie unterstützt. Weiters ist zu berichten, dass die Empfehlungswahrscheinlichkeit allgemein steigt. Insbesondere sind die extrinsischen Belohnungen für die schwächeren Beziehungen mehr relevant als für die stärkeren, wobei die intrinsischen Belohnungen die Empfehlungswahrscheinlichkeit eher in stärkeren als in schwächeren Beziehungen erhöhen. Anders ausgedrückt: Für langfristige Partner ist eine nicht monetäre Belohnung von größerem Wert, während für Partner, die von Zeit zu Zeit miteinander arbeiten, die monetäre Auszeichnung von Bedeutung ist. Hingegen zeigt sich kein relevanter Effekt, wenn der Lieferant über eine hohe Markenbekanntheit und einen etablierten Markenverband verfügt, die Empfehlungswahrscheinlichkeit des Partners bleibt dabei gleich und der Effekt der beiden Arten von Belohnungen wird weder stärker noch geringer.In this masters thesis the importance of rewards in referral marketing in Business-to-Business (B2B) relationships is introduced. Referral marketing in B2B relationships is used in order to acquire new customers because of the influence of existing partners, rather than through traditional marketing. In contrast to previous researches, this one distinguishes between two types of rewards offered for recommending, intrinsic and extrinsic. Intrinsic rewards are more intangible and psychological and extrinsic rewards are visible and tangible. As well, the author investigates the moderating effect of brand and tie strength on partners referral likelihood. Given the lack of existing research in the area of implementing referral marketing in Austria, the author used an online survey for collecting data from purchasing departments in B2B firms. One overall contribution out of this masters thesis is that rewards increases referral likelihood in every relationship, which supports the exchange theory. More specifically, the extrinsic rewards are more important for weaker rather than for stronger ties and the intrinsic rewards are more increasing the willingness to recommend in stronger than in weaker relationships. To put it differently, for long term partners a non-monetary reward has more value, while for partners which corporate from time to time with each other the monetary award matters. Additionally, suppliers brand in fact does not have any impact on this exchange process. More specifically, there is no relevant effect if the supplier firm is having high brand awareness and a well-established brand association, the partners referral likelihood will remain the same and will not increase nor lower the effect of the two types of a rewards.Sanda Filipovic, BScZusammenfassungen in Deutsch und EnglischMasterarbeit Karl-Franzens-Universität Graz 2018 D 1107
Mathematical modeling of ATP release in response to mechanical stimulation of chondrogenic cells
No full text© 2015 IEEE. One of the key challenges in osteochondral tissue engineering is to achieve mechanical properties in the engineered tissue that are equivalent to the native tissue. Detailed knowledge of the mechanotransduction pathways occuring in the native tissue is necessary before manipulation towards the aimed properties in the engineered tissue. Purinergic (ATP-mediated) signaling is proving to be one of the main mechanisms how the chondrogenic cells sense and respond to the mechanical stimulation. In this study we performed experiments to evaluate the mechanosensitive purinergic response of chondrocytes and chondrogenic mesenchymal stem cells and we further developed a mathematical model showing ATP release changes in loaded vs. unloaded cell constructs over time. Such model can be of value in determining the potential for pharmacological manipulation of the purinergic mechanotransduction in the engineered osteochondral tissues
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