Asymmetrical sample training produces asymmetrical retention functions in feature-present/feature-absent matching in pigeons

2004 ◽  
Vol 35 (1) ◽  
pp. 53-70 ◽  
Author(s):  
Douglas S Grant ◽  
Craig W Blatz
Keyword(s):  
BMJ Leader ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 174-177
Author(s):  
Cara Reed ◽  
Aoife M McDermott

BackgroundA hallmark of a leader is their ability to manage change—an ever-present feature of organisational life. Indeed, all improvement requires change, and in this context navigating employees’ responses to progress change is a key part of leadership. To support this, research and leadership development have historically focused on how leaders can reduce resistance to change. This review highlights the value of reframing classic conceptions of resistance to change as something negative.ResultWidening understanding of non-acceptance responses to change supports the provision of broader, yet more meaningful advice to leaders and managers about how to engage with employees in ways that can support improvement. To do this, the article identifies why resistance is important in the contemporary context and then outlines three current broad views within research on resistance to change identified by Robyn Thomas and Cynthia Hardy. These influence how resistance is seen and therefore how it is approached. The article considers what leaders can learn and do to more effectively navigate employees’ responses to change, and how reframing resistance applies to the specific context of healthcare.


1986 ◽  
Vol 2 (8) ◽  
pp. 320-335
Author(s):  
David Allen

‘Deadly British productions of Chekhov remain all too common.’ Or so suggests David Allen, who finds in the Chekhov productions of Mike Alfreds a refreshing recognition of the distinctively ‘Russian’ qualities of the plays, and an ability to render these in terms of the choices available to British actors. Mike Alfreds founded the Shared Experience company in 1975, and in Theatre Quarterly No. 39 (1981). Clive Barker interviewed him and members of the company on the processes of collective creation through which most of their productions then evolved: the present feature thus in part reflects Alfreds's own developing interest in working on ‘fixed’ scripts, both with Shared Experience, for whom he directed Three Sisters earlier this year, and in his work as guest director of The Cherry Orchard, first for Oxford Playhouse in 1982, and subsequently for the National Theatre at the Cottesloe, in 1985. In the following interview, Mike Alfreds's own perceptions of his work are intercut with author David Allen's observations during rehearsals, and the subsequent reactions of the critics.


2019 ◽  
Vol 55 (95) ◽  
pp. 14238-14254 ◽  
Author(s):  
Cyril Poriel ◽  
Lambert Sicard ◽  
Joëlle Rault-Berthelot

In the present feature article, we present the new generations of spirobifluorenes for organic electronics and we detail the impact of positional isomerism on the electronic properties and device performance.


Synthesis ◽  
2018 ◽  
Vol 50 (21) ◽  
pp. 4229-4242 ◽  
Author(s):  
Erwan Poupon ◽  
Laurent Evanno ◽  
Guillaume Vincent ◽  
Natacha Denizot ◽  
David Lachkar ◽  
...  

The present feature article details our endeavors towards the synthesis of the highly intricate bisindole alkaloid bipleiophylline and its biosynthetic precursor voacalgine A: from the development of a divergent oxidative coupling between indole and dihydroxybenzoic acids, to the exploration of the chemical space from natural products and culminating in the biomimetic assembly of voacalgine A and bipleiophylline.


2021 ◽  
Vol 43 (3) ◽  
pp. 25-29
Author(s):  
Jörg Kärger ◽  
Douglas M. Ruthven ◽  
Rustem Valiullin

Abstract Owing to their potential for eco-friendly matter upgrading by molecular sieving and shape-selective conversion, nanoporous materials are among the pioneers of green chemistry. The performance of their application is often controlled by diffusion, i.e. the rate of mass transfer within these materials. This mass transfer, however, is rather complex and subject to numerous influences. Unambiguous diffusion measurement has thus remained a challenge to this day with errors in the interpretation of experimental data being all too common. The present feature reports the efforts of an IUPAC initiative to overcome these limitations.


2017 ◽  
Vol 53 (43) ◽  
pp. 5781-5801 ◽  
Author(s):  
Ryota Sakamoto ◽  
Kenji Takada ◽  
Tigmansu Pal ◽  
Hiroaki Maeda ◽  
Tetsuya Kambe ◽  
...  

The present feature article assembles recent rapid progress in the coordination nanosheet (CONASH), the interest of which traverses from basic to materials science.


1978 ◽  
Vol 2 (2) ◽  
pp. 336-337
Author(s):  
David Lowenthal

With this issue we inaugurate a new feature: reprints of famous or forgotten prescriptive statements by past geographers, together with commentaries on how far their aims have been realized. Geographers have repeatedly asserted that theirs was an age, if not the age, of ‘progress’. Modern devotees of progress may find it salutary, if not chastening, to examine past expectations in the light of subsequent achievements. The first Past and present feature is Sir Francis Younghusband's (1920) presidential address to the Royal Geographical Society, on ‘Natural beauty and geographical science’, to which David Lowenthal appends a retrospective commentary.


2018 ◽  
Vol 21 (4) ◽  
pp. 803-813 ◽  
Author(s):  
Alexandre J. S. Morin ◽  
Aleksandra Bujacz ◽  
Marylène Gagné

The 2011 Organizational Research Methods Feature Topic on latent class procedures has helped to establish person-centered analyses as a method of choice in the organizational sciences. This establishment has contributed to the generation of substantive-methodological synergies leading to a better understanding of a variety of organizational phenomena and to an improvement in research methodologies. The present Feature Topic aims to provide a user-friendly introduction to these new methodological developments for applied organizational researchers. Organized around a presentation of the typological, prototypical, and methodologically exploratory nature of person-centered analyses, this introductory article introduces seven contributions aiming to: (a) clarify the meaning, advantages, and applications of person-centered analyses; (b) illustrate emerging prototypical and longitudinal cluster analytic approaches; (c) introduce researchers to multilevel person-centered analyses as well as to auxiliary approaches that will drastically increase the scope of application of these methods; and (d) describe the application of these methods for confirmatory purposes.


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