4,353 research outputs found
Parent Organizing as a Strategy for Sustainable Policy Change
In this issue of Making the Link, Ada Sanchez and Ron White of the Peppercorn Foundation discuss parent organizing as a strategy for sustainable policy change and recommend steps funders can take to learn more and take effective action to nurture and support parent organizing on the local, state and national level
Cara a cara ante los limites del conocimiento
¿Puede el ser humano asimilar la larga lista de importantes hallazgos científicos que se suceden cada día? ¿Como puede asumir éticamente tal vértigo? ¿Se puede pensar sin estar atento a avances como la secuenciación del Genoma Humano o la ingeniería genética? Los profesores José Manuel Sánchez Ron, catedrático de Historia de la Ciencia de la Universidad Autónoma de Madrid, y Francisco García Olmedo, catedrático de Biología Molecular de la Universidad Politécnica, hablan sobre estos interrogantes en un momento en el que se cuestionan valores asumidos durante milenios. Ambos publican estos días, respectivamente, El futuro es un país tranquilo (Espasa) y Entre el placer y la necesidad (Crítica)
The SWISS-2DPAGE database: what has changed during the last year
Swiss-2DPAGE (http://www.expasy.ch/ch2d/) is an annotated two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) database established in 1993. The current release contains 21 reference maps from human and mouse biological samples, as well as from Saccharomyces cerevisiae, Escherichia coli and Dictyostelium discoideum origin. These reference maps now have 2480 identified spots, corresponding to 528 separate protein entries in the database, in addition to virtual entries for each SWISS-PROT sequence. During the last year, the SWISS-2DPAGE has undergone major changes. Six new maps have been added, and new functions to access the data have been provided through the ExPASy server. Finally, an important change concerns the database funding sourc
Modularity Design Rules for Architecture Development:Theory, Implementation, and Evidence from Development of the Renault-Nissan Alliance "Common Module Family" Architecture
Does Sport Matter?: An Analysis Of The Personality Of Sport
This paper examines the intrinsic characteristics of sport and reaffirms the idea that celebrity endorsers bring more to the endorsement process than just their personal qualities. This idea was previously proposed by McCracken (1989) in his transfer of meaning theory. The importance of this research lies in the fact that given the risks associated with celebrity endorsement, marketers must be aware of all factors that influence consumers’ evaluations of the celebrity endorsement. The proposition therefore is that an athlete’s sport is a factor that influences consumers’ celebrity endorsement evaluations. In other words the athlete and his sport cannot be separated
Gain control network conditions in early sensory coding
Gain control is essential for the proper function of any sensory system. However, the precise mechanisms for achieving effective gain control in the brain are unknown. Based on our understanding of the existence and strength of connections in the insect olfactory system, we analyze the conditions that lead to controlled gain in a randomly connected network of excitatory and inhibitory neurons. We consider two scenarios for the variation of input into the system. In the first case, the intensity of the sensory input controls the input currents to a fixed proportion of neurons of the excitatory and inhibitory populations. In the second case, increasing intensity of the sensory stimulus will both, recruit an increasing number of neurons that receive input and change the input current that they receive. Using a mean field approximation for the network activity we derive relationships between the parameters of the network that ensure that the overall level of activity
of the excitatory population remains unchanged for increasing intensity of the external stimulation. We find that, first, the main parameters that regulate network gain are the probabilities of connections from the inhibitory population to the excitatory population and of the connections within the inhibitory population. Second, we show that strict gain control is not achievable in a random network in the second case, when the input recruits an increasing number of neurons. Finally, we confirm that the gain control conditions derived from the mean field approximation are valid in simulations of firing rate
models and Hodgkin-Huxley conductance based models
A Scientific Critique of the Resource-Base View (RBV) in Strategy Theory, with Competence-Base Remedies for the RBV’s Conceptual Deficiencies and Logic Problems
Part I of this paper applies the principles of the philosophy of science and the derived scientific method to analyze the foundational concepts and core proposition of the Resource-Based View (RBV) as popularized by Barney (1986, 1991, 1997). This analysis identifies seven fundamental conceptual deficiencies and logic problems in Barney’s conceptualization of "strategically valuable resources” and in Barney’s VRIO framework for identifying strategically valuable resources that can be sources of sustained competitive advantage. Three problems -- the Value Conundrum, the Tautology Problem in the Identification of Resources, and the Absence of a Chain of Causality -- relate to the RBV’s and VRIO’s failure to provide an adequate conceptual basis for identifying strategically valuable resources. The Uniqueness Dilemma, the Cognitive Impossibility Dilemma, and an Asymmetry in Assumptions about Resource Factor Markets result in an inability of the VRIO framework to support identification of resources that can be sources of sustained competitive advantage. More fundamentally, the core proposition of the RBV – that resources that are strategically valuable, rare, inimitable, and organizationally embedded are sources of sustainable competitive advantage – is argued to result directly in the Epistemological Impossibility Problem that precludes use of the scientific method in RBV research. This paper argues that until these conceptual deficiencies and logic problems are recognized and remedied, the RBV – in spite of its current popularity -- is and will remain theoretically sterile and incapable of contributing in any systematic way to the development of strategy theory. Part II of this paper then suggests how foundational concepts developed within the competence perspective on strategy provide essential remedies for the identified deficiencies and problems in the RBV -- and thereby provide a more conceptually adequate basis for representing the nature of firms in the scientific study of their interactions and competitive outcomes
Systematic literature review of methodologies and data sources of existing economic models across the full spectrum of Alzheimer’s disease and dementia from apparently healthy through disease progression to end of life care: a systematic review protocol
Introduction Dementia is one of the greatest health challenges the world will face in the coming decades, as it is one of the principal causes of disability and dependency among older people. Economic modelling is used widely across many health conditions to inform decisions on health and social care policy and practice. The aim of this literature review is to systematically identify, review and critically evaluate existing health economics models in dementia. We included the full spectrum of dementia, including Alzheimer’s disease (AD), from preclinical stages through to severe dementia and end of life. This review forms part of the Real world Outcomes across the Alzheimer’s Disease spectrum for better care: multimodal data Access Platform (ROADMAP) project. Methods and analysis Electronic searches were conducted in Medical Literature Analysis and Retrieval System Online, Excerpta Medica dataBASE, Economic Literature Database, NHS Economic Evaluation Database, Cochrane Central Register of Controlled Trials, Cost-Effectiveness Analysis Registry, Research Papers in Economics, Database of Abstracts of Reviews of Effectiveness, Science Citation Index, Turning Research Into Practice and Open Grey for studies published between January 2000 and the end of June 2017. Two reviewers will independently assess each study against predefined eligibility criteria. A third reviewer will resolve any disagreement. Data will be extracted using a predefined data extraction form following best practice. Study quality will be assessed using the Phillips checklist for decision analytic modelling. A narrative synthesis will be used. Ethics and dissemination The results will be made available in a scientific peer-reviewed journal paper, will be presented at relevant conferences and will also be made available through the ROADMAP project
Combined search for the quarks of a sequential fourth generation
Results are presented from a search for a fourth generation of quarks
produced singly or in pairs in a data set corresponding to an integrated
luminosity of 5 inverse femtobarns recorded by the CMS experiment at the LHC in
2011. A novel strategy has been developed for a combined search for quarks of
the up and down type in decay channels with at least one isolated muon or
electron. Limits on the mass of the fourth-generation quarks and the relevant
Cabibbo-Kobayashi-Maskawa matrix elements are derived in the context of a
simple extension of the standard model with a sequential fourth generation of
fermions. The existence of mass-degenerate fourth-generation quarks with masses
below 685 GeV is excluded at 95% confidence level for minimal off-diagonal
mixing between the third- and the fourth-generation quarks. With a mass
difference of 25 GeV between the quark masses, the obtained limit on the masses
of the fourth-generation quarks shifts by about +/- 20 GeV. These results
significantly reduce the allowed parameter space for a fourth generation of
fermions.Comment: Replaced with published version. Added journal reference and DO
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