1,070 research outputs found
Co-ordination of local policies for urban development and public transportation in four Swiss cities
The present article aims at assessing the possibility for urban areas to coordinate local policies of urban development and public transportation and at explaining the differences in this achievement between urban regions. In order to do so, the study draws support from two empirical sources: a historical analysis of the "mass-production" generated by the public service sectors in the field of transport and urban development in the cities of Basel, Bern, Geneva, and Lausanne since 1950, and a series of six case studies in these four cities. The study identifies factors located both at context level regarding morphological and geographical conditions as well as institutional settings and case-specific idiosyncrasies regarding organizational structure, past policy decisions, as well as vocational cultures that determine the possibility for urban areas to meet the need for policy coordination
Infinite ergodic theory and Non-extensive entropies
We bring into account a series of result in the infinite ergodic theory that
we believe that they are relevant to the theory of non-extensive entropie
Mixed income housing (MIH)
Mixed Income Housing (MIH) is the outcome of a deliberate effort to build a mixed-income development, usually including a variety of housing typologies, sometime combined with the goal of creating a mixed-tenure development. International consensus on a more specific definition of MIH does not exist; instead, multiple expressions can be equally used, with similar meaning. The expression MIH is mainly used within the USA context where it is sometime replaced by mixed-income neighborhood. In Europe, MIH tend to fall within initiatives on (sustainable) urban regeneration, neighborhood restructuring, urban renewal, while the UK legislation often refers to âpepper-pottingâ with respect to different tenures in the same neighborhood aimed to achieve MIH. Non-English-speaking countries tend to use different terms.
The MIH policies are challenged by a specific connotation, i.e., in the United States it is the combination between urban poverty and black or Latinos ghettoes; hence, spatial segregation is combined with racial considerations which are less present in other countries, except for South Africa. In the USA, desegregation in public housing estates became a legal obligation following the famous 1969 Gautreaux case, because of the application of the 1964 Civil Rights Act prohibiting racial discrimination in federally funded activities
The Macronuclear Genome of \u3cem\u3eStentor coeruleus\u3c/em\u3e Reveals Tiny Introns in a Giant Cell
The giant, single-celled organism Stentor coeruleus has a long history as a model system for studying pattern formation and regeneration in single cells. Stentor [1, 2] is a heterotrichous ciliate distantly related to familiar ciliate models, such as Tetrahymena or Paramecium. The primary distinguishing feature of Stentor is its incredible size: a single cell is 1 mm long. Early developmental biologists, including T.H. Morgan [3], were attracted to the system because of its regenerative abilitiesâif large portions of a cell are surgically removed, the remnant reorganizes into a normal-looking but smaller cell with correct proportionality [2, 3]. These biologists were also drawn to Stentor because it exhibits a rich repertoire of behaviors, including light avoidance, mechanosensitive contraction, food selection, and even the ability to habituate to touch, a simple form of learning usually seen in higher organisms [4]. While early microsurgical approaches demonstrated a startling array of regenerative and morphogenetic processes in this single-celled organism, Stentor was never developed as a molecular model system. We report the sequencing of the Stentor coeruleus macronuclear genome and reveal key features of the genome. First, we find that Stentor uses the standard genetic code, suggesting that ciliate-specific genetic codes arose after Stentor branched from other ciliates. We also discover that ploidy correlates with Stentorâs cell size. Finally, in the Stentor genome, we discover the smallest spliceosomal introns reported for any species. The sequenced genome opens the door to molecular analysis of single-cell regeneration in Stentor
A critical review of PASBio's argument structures for biomedical verbs
BACKGROUND: Propositional representations of biomedical knowledge are a critical component of most aspects of semantic mining in biomedicine. However, the proper set of propositions has yet to be determined. Recently, the PASBio project proposed a set of propositions and argument structures for biomedical verbs. This initial set of representations presents an opportunity for evaluating the suitability of predicate-argument structures as a scheme for representing verbal semantics in the biomedical domain. Here, we quantitatively evaluate several dimensions of the initial PASBio propositional structure repository. RESULTS: We propose a number of metrics and heuristics related to arity, role labelling, argument realization, and corpus coverage for evaluating large-scale predicate-argument structure proposals. We evaluate the metrics and heuristics by applying them to PASBio 1.0. CONCLUSION: PASBio demonstrates the suitability of predicate-argument structures for representing aspects of the semantics of biomedical verbs. Metrics related to theta-criterion violations and to the distribution of arguments are able to detect flaws in semantic representations, given a set of predicate-argument structures and a relatively small corpus annotated with them
Tacit Domains: The Transference of Practitioner KnowâHow in Contemporary English Planning Practice
This article reflects upon ideas of tacit knowledge in order to examine the nature of plannersâ expertise. It investigates the shifting knowledge and power dynamics between and within the public and private sectors, as a means of determining how tacit expertise is transferred and reâappropriated in new domains and geographies of practice. Tacit understanding of what facilitates successful permissions and what impedes the approval process, helps planners navigate the planâled system and avoid inertia. Findings are twoâfold. Firstly, public sector planners transfer their own expert tacit knowledge to influence and direct local development planning. Secondly, the findings illustrate that public sector planners feel their tacit expertise is increasingly undervalued and traditional networks of knowledge transference have been dismantled due to the erosion of networks of peer support. This results in a disruptive counter narrative based in private planning practice where public sector experts are reâemerging in commercial practice due to a range of factors, including: budgets cuts; demoralisation; and seeking greater job security in the private sector. This leads to new geographies of tacit knowledge, as local government planners transfer their knowledge into new professional environments. This can result in reconfigurations of locally embedded knowledge as expertise is repurposed and used to bolster the likelihood of development applications succeeding, often for profit motives rather than the broader public good. Furthermore, it can also lead to local knowledge being uprooted and spatially diffused across wider geographies as private sector planners frequently work across broader domains of practice than public sector counterparts. In conclusion, we outline gaps in our current understanding of the evolution of planning practice and outline future research opportunities
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