10,204 research outputs found
A framework for proving the self-organization of dynamic systems
This paper aims at providing a rigorous definition of self- organization, one
of the most desired properties for dynamic systems (e.g., peer-to-peer systems,
sensor networks, cooperative robotics, or ad-hoc networks). We characterize
different classes of self-organization through liveness and safety properties
that both capture information re- garding the system entropy. We illustrate
these classes through study cases. The first ones are two representative P2P
overlays (CAN and Pas- try) and the others are specific implementations of
\Omega (the leader oracle) and one-shot query abstractions for dynamic
settings. Our study aims at understanding the limits and respective power of
existing self-organized protocols and lays the basis of designing robust
algorithm for dynamic systems
Determinants of job satisfaction: A European comparison of sel femployed and paid employees
Job satisfaction of self-employed and paid-employed workers is analyzed using the European Community Household Panel for the EU-15 covering the years 1994-2001. We distinguish between two types of job satisfaction, i.e. job satisfaction in terms of type of work and job satisfaction in terms of job security. Findings from our generalized ordered logit regressions indicate that self-employed individuals as compared to paid employees are more likely to be satisfied with their present jobs in terms of type of work and less likely to be satisfied in terms of job security. The findings also provide many insights into the determinants of the two types of job satisfaction for both the self-employed and paid employees.
IMMIGRANTS IN WRITING
Through this autoethnography, I intend to explore and understand how migration impacted and continues to impact my identity along with the languages and literacies I speak, write, and practice. How does the normalized devaluing and valuing of literacies, languages, cultures, and in extension identities play out in the process of migration? The devaluation of languages and cultures is in fact the devaluation of those who identify with them; they are left to âfeel undervaluedâ or ânot good enoughâ in the languages they speak, cultures they identify with, and literacies they practice. To be âgood enoughâ or valued, they have to assimilate. What does it mean to assimilate in migration? Where do we draw the line with assimilation? And most importantly, how do we teach and train ourselves to realize the literacies that we practice and claim the space/weight they carry? These are some of the thoughts and questions that form the foundation for my thesis project, âImmigrants in Writing.â Through this project, I aim to explore migration, identity/self, and literacies/languages/cultures as they overlap and intersect
The structure of a minimal -chart with two crossings II: Neighbourhoods of
Given a 2-crossing minimal chart , a minimal chart with two
crossings, set there exists an edge of label containing
a white vertex, and there exists an edge of label
containing a white vertex. In this paper we study the structure of a
neighbourhood of , and propose a normal form for
2-crossing minimal -charts, here and mean the
union of all the edges of label and respectively.Comment: 57 pages, 36 figure
Photoacoustic & pulsed laser-doppler monitoring of blood concentration and perfusion in tissue
Draft Genome Sequence of an International Clonal Lineage 1 Acinetobacter baumannii Strain from Argentina
In the last few years Acinetobacter baumannii has emerged worldwide as an important nosocomial pathogen in medical institutions. Here, we present the draft genome sequence of the international clonal lineage 1 (ICL1) A. baumannii strain A144 that was isolated in a hospital in Buenos Aires City in the year 1997. The strain is susceptible to carbapenems and resistant to trimethoprim and gentamicin.Fil: Vilacoba, Elisabet. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Houssay. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica; ArgentinaFil: DĂ©raspe, Maxime. Laval University; CanadĂĄFil: Traglia, German Matias. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Houssay. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica; ArgentinaFil: Roy, Paul H.. Laval University; CanadĂĄFil: Ramirez, Maria Soledad. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Houssay. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica; Argentina. California State University; Estados UnidosFil: Centron, Daniela. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Houssay. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones en MicrobiologĂa y ParasitologĂa MĂ©dica; Argentin
A rulebook for peptide control of legumeâmicrobe endosymbioses
Plants engage in mutually beneficial relationships with microbes, such as arbuscular mycorrhizal fungi or nitrogen-fixing rhizobia, for optimized nutrient acquisition. In return, the microbial symbionts receive photosynthetic carbon from the plant. Both symbioses are regulated by the plant nutrient status, indicating the existence of signaling pathways that allow the host to fine-tune its interactions with the beneficial microbes depending on its nutrient requirements. Peptide hormones coordinate a plethora of developmental and physiological processes and, recently, various peptide families have gained special attention as systemic and local regulators of plantâmicrobe interactions and nutrient homeostasis. In this review, we identify five \u27rules\u27 or guiding principles that govern peptide function during symbiotic plantâmicrobe interactions, and highlight possible points of integration with nutrient acquisition pathways
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