Search results for "c space"
showing 10 items of 552 documents
A microcosm experiment to evaluate the influence of location and quality of plant residues on residue decomposition and genetic structure of soil mic…
2007
The effects of location (soil surface vs. incorporated in soil) and nature of plant residues on degradation processes and indigenous microbial communities were studied by means of soil microcosms incubation in which the different soil zones influenced by decomposition i.e. residues, soil adjacent to residues (detritusphere) and distant soil unaffected by decomposition (bulk soil) were considered. Plant material decomposition, organic carbon assimilation by the soil microbial biomass and soil inorganic N dynamics were studied with 13 C labelled wheat straw and young rye. The genetic structure of the community in each soil zone were compared between residue locations and type by applying B- a…
Citrate Sensing by the C 4 -Dicarboxylate/Citrate Sensor Kinase DcuS of Escherichia coli : Binding Site and Conversion of DcuS to a C 4 -Dicarboxylat…
2007
ABSTRACT The histidine protein kinase DcuS of Escherichia coli senses C 4 -dicarboxylates and citrate by a periplasmic domain. The closely related sensor kinase CitA binds citrate, but no C 4 -dicarboxylates, by a homologous periplasmic domain. CitA is known to bind the three carboxylate and the hydroxyl groups of citrate by sites C1, C2, C3, and H. DcuS requires the same sites for C 4 -dicarboxylate sensing, but only C2 and C3 are highly conserved. It is shown here that sensing of citrate by DcuS required the same sites. Binding of citrate to DcuS, therefore, was similar to binding of C 4 -dicarboxylates but different from that of citrate binding in CitA. DcuS could be converted to a C 4 -…
Comunità e spazio pubblico. Come generare la dimensione spaziale della democrazia
2021
The contribution addresses the issue of the spatial dimension of democracy in the neo-cosmopolitan city, also as an expression of the communities living in it. By highlighting the inequalities still present, which translate into marginality of communities and urban spaces, the contribution claims the importance of public space in the relations between community and city and proposes operational methods through project examples in the city of Palermo.
Wymiar społeczny w projektowaniu zrównoważonego rozwoju miasta
2020
Artykuł zawiera rozważania na temat związku społecznie zrównoważonego rozwoju miasta i projektowania urbanistycznego. Wyrażając przekonanie, że równowaga społeczna jest jednym z podstawowych elementów zrównoważonego rozwoju miasta, autor zaznacza jednocześnie, że projektowanie urbanistyczne ukierunkowane na realizację celów zrównoważonego rozwoju może nie uzyskać akceptacji społecznej. W artykule wskazano na różne podejścia do zdefiniowania społecznie zrównoważonego rozwoju obszarów miejskich. Starano się również określić, które elementy projektowania urbanistycznego mają szczególne znaczenie dla jego realizacji, zwracając uwagę na przestrzenną formę miasta i kwestię dostępności przestrzeni…
Cuando la historia está presente: Argumentos a favor de la sociología histórica
2019
Sociology and history have maintained a discontinuous relationship and a permanent discussion. Classical sociology is intrinsically historical, but after the first theoretical synthesis the dialogue between both disciplines was extinguished and it has often been necessary to defend the need for the historical view in sociology from the margins of the dominant paradigm. However, as a specialty or subdiscipline, historical sociology has consolidated its own academic space and a strong theoretical, methodological and conceptual body. In Spain this process of institutionalization has not yet success. In this article we expose a few arguments in defense of historical sociology, both theoretical …
THE CONCEPT OF COMPETENCE IN THE CONTEXT OF EDUCATION REFORM IN LATVIA
2019
The word competence is a key concept of ongoing education reform in Latvia - the ESF project “Competency approach in the curriculum” (hereafter: Project). The implementation of the idea of competence-based curriculum is related to significant changes in the structure of school and pre-school curriculum, the system of evaluation of learning outcomes, teacher education etc., which are widely clarified and discussed in expert groups and public space. Participating as experts in the development of a Project, the authors of the article find that the Latvian educational space lacks a common understanding of the meaning of the concept competence. Often the pedagogical terminology used by educators…
Fixed point results in cone metric spaces
2010
We prove a result on points of coincidence and common fixed points for three self mappings satisfying a weak generalized contractive type condition in cone metric spaces. We deduce some results on common fixed points for two self mappings satisfying a weak contractive type condition in cone metric spaces. This results generalize some well-known recent results.
On fixed points of Berinde’s contractive mappings in cone metric spaces
2010
In this paper we establish some common fixed point theorems for two self-mappings satisfying a generalized contractive condition. This result generalizes well known comparable results in the literature. As an application, a necessary and sufficient condition for a fixed point to be a periodic point for the mapping involved therein, without appealing to continuity, in a cone metric space is established.
Fixed point results in cone metric spaces for contractions of Zamfirescu type
2010
We prove a result on points of coincidence and common fixed points in cone metric spaces for two self mappings satisfying a weak generalized contractive condition of Zamfirescu type. We deduce some results on common fixed points for two self mappings satisfying a weak contractive type condition. These results generalize some well-known recent results.
Baum-Katz’s Type Theorems for Pairwise Independent Random Elements in Certain Metric Spaces
2020
In this study, some Baum-Katz’s type theorems for pairwise independent random elements are extended to a metric space endowed with a convex combination operation. Our results are considered in the cases of identically distributed and non-identically distributed random elements. Some illustrative examples are provided to sharpen the results. peerReviewed