Search results for "Master"

LrhA as a new transcriptional key regulator of flagella, motility and chemotaxis genes in Escherichia coli

2002

The function of the LysR-type regulator LrhA of Escherichia coli was defined by comparing whole-genome mRNA profiles from wild-type E. coli and an isogenic lrhA mutant on a DNA microarray. In the lrhA mutant, a large number (48) of genes involved in flagellation, motility and chemotaxis showed relative mRNA abundances increased by factors between 3 and 80. When a representative set of five flagellar, motility and chemotaxis genes was tested in lacZ reporter gene fusions, similar factors for derepression were found in the lrhA mutant. In gel retardation experiments, the LrhA protein bound specifically to flhD and lrhA promoter DNA (apparent K-D approximate to 20 nM), whereas the promoters of…

The master’s dissertation viva by video conference: strategies and best practices

2019

Durante la última década, se han publicado numerosos estudios sobre el proceso de elaboración y evaluación de los trabajos de fin de máster (TFM) (Da Cunha, 2016; García & Martínez-Clares, 2012; González-Calero & Turégano, 2011), sobre las fases de tutorización y acompañamiento al estudiante (Flores, Martínez, Martínez López, Pascual, & Sanz, 2013) y sobre las competencias a adquirir tras su finalización (Cabrera, Sangrà & Rodera, 2012; Serrano & Pontes, 2015; Viejo & Ortega Ruiz, 2018). Sin embargo, no resultan tan evidentes las investigaciones que analizan la fase de preparación y defensa pública de estos trabajos, siendo, sin embargo, la que genera más incomodidad entre el estudiantado. …

Levy targeting and the principle of detailed balance

2011

We investigate confining mechanisms for Lévy flights under premises of the principle of detailed balance. In this case, the master equation of the jump-type process admits a transformation to the Lévy-Schrödinger semigroup dynamics akin to a mapping of the Fokker-Planck equation into the generalized diffusion equation. This sets a correspondence between above two stochastic dynamical systems, within which we address a (stochastic) targeting problem for an arbitrary stability index μ ε (0,2) of symmetric Lévy drivers. Namely, given a probability density function, specify the semigroup potential, and thence the jump-type dynamics for which this PDF is actually a long-time asymptotic (target) …

Path-wise versus kinetic modeling for equilibrating non-Langevin jump-type processes

2014

We discuss two independent methods of solution of a master equation whose biased jump transition rates account for long jumps of L\'{e}vy-stable type and nonetheless admit a Boltzmannian (thermal) equilibrium to arise in the large time asymptotics of a probability density function $\rho (x,t)$. Our main goal is to demonstrate a compatibility of a {\it direct} solution method (an explicit, albeit numerically assisted, integration of the master equation) with an {\it indirect} path-wise procedure, recently proposed in [Physica {\bf A 392}, 3485, (2013)] as a valid tool for a dynamical analysis of non-Langevin jump-type processes. The path-wise method heavily relies on an accumulation of large…

Les effets des programmes d'excellence sur l'attractivité des formations en Master et Doctorat

2022

«Den dagen PC-en går i stykker, da er mye av min verden gått i stykker» : En kvalitativ studie om eldres bruk av Duka-PC

2019

Masteroppgave klinisk helsevitenskap ME520 - Universitetet i Agder 2019 Background:Information and communication technology (ICT) affects our everyday lives and the government wants it to be equal opportunities for everyone despite gender, age, background and economy. Many seniors want to be an active player in this digital everyday life. However, lack of knowledge and skills may affectthe confidence to get started. Technological solutions are needed that canmeet their needs and which are adjusted to the functional impairments the individual may have. The importance of facilitated training and user-friendly equipment can be of great value to achieve a greater degree of mastering and confide…

Regional Tourism Development in Romania – Consistency with Policies and Strategies Developed at EU Level

2013

Abstract The national tourism development master plan for the period 2007-2026 focuses on tourism resources of the regions. The regional tourism development strategy should have the opportunities and threats that are found in every county of the region as guide marks. Their identification leads to facilitate the implementation of tourism development strategy, the opportunity maximum use being the revival and growth ramp of tourist activities, preventing threats ensure the proper functioning of the implementation process. In this paper we analyzed a series of indicators of tourist movement in the eight development regions of Romania.

IL-12 family members in experimental colitis

2008

Interleukin (IL)-12 p35/p40 is a heterodimeric cytokine that plays an important role in T helper (Th) cell polarization and Th1 T-cell differentiation. Recent findings have shown that both p35 and p40 can form other cytokines with different proteins (IL-23: p19/p40; IL-35: p35/EBI3). Furthermore, the cytokine IL-27 (EBI3/p28) has been identified as a member of the IL-12 family. Here, we discuss the recent findings on the role of IL-12 family members in experimental colitis. In particular, the role of IL-23 as a master regulator of effector T-cell activation is highlighted. These findings have important implications for the design of new therapeutic approaches in chronic intestinal inflammat…

L'attribution des classes aux enseignants : le cas des écoles primaires

2007

Assigning teachers to classrooms: The case of French primary schools - This paper reports a study which focused on teachers'assignment in French elementary school whose headmasters have no decision-making powers. Using both in-depth interviews with 18 headmasters and data about teachers and classrooms within their schools, the analysis shows that the potential for problems is significant as far as teachers are sorted into classrooms based on their preference first. When those individual preferences compete, a few basic rules apply and some arrangements should be found amongst members of the staff. Actually, this study reveals that bargaining, or at times yielding to teachers'preferences abo…

Online optimization of a multi-conversion-level DC home microgrid for system efficiency enhancement

2017

In this paper, an on-line management system for the optimal efficiency operation of a multi-bus DC home distribution system is proposed. The operation of the system is discussed with reference to a distribution system with two conversion stages and three voltage levels. In each of the conversion stages, three paralleled DC/DC converters are implemented. A Genetic Algorithm performs the on-line optimization of the DC network’s global efficiency, generating the optimal current sharing ratios of the concurrent power converters. The overall DC/DC conversion system including the optimization section is modelled using MATLAB/Simulink. Thanks to the implemented online algorithm, considering …