scholarly journals Attending to the External Environment to Identify Potential Opportunities

2021 ◽  
pp. 1-25
Author(s):  
Dean A. Shepherd ◽  
Holger Patzelt
Keyword(s):  
Environmental Changes ◽  
External Environment ◽  
Initial Step ◽  
New Venture ◽  
Opportunity Identification ◽  
Top Down ◽  
Bottom Up ◽  
Attention Model ◽  
Entrepreneurial Action

AbstractBuilding on a recent study (Shepherd et al. in Strategic Management Journal 38:626–644, 2017), this chapter highlights the importance of noticingopportunities as an initial step toward new venture creation. Unsurprisingly, there has been considerable interest in the processes of allocating attention to notice potential opportunities arising from changes in the external environment. We know a great deal about the role of top-down (i.e., based on knowledge and experience) processes of allocating attention to the environment in forming opportunity beliefs worthy of entrepreneurial action. However, in this chapter, we illustrate how bottom-up processes, whereby environmental changes capture entrepreneurs’ attention, shape opportunity identification. Building on the notion of guided attention, we detail an attention model of forming opportunity beliefs for entrepreneurial action that includes both top-down and bottom-up processes for allocating attention. This chapter explains how entrepreneurs can allocate their transient attention to identify potential opportunities from environmental changes. This chapter also describes how allocating sustained entrepreneurial attention influences belief formation about radicaland incremental opportunities requiring entrepreneurial action.

Sensory regulation of quadrupedal locomotion: a top-down or bottom-up control system?

2012 ◽  
Vol 108 (3) ◽  
pp. 709-711 ◽  
Author(s):  
Yann Thibaudier ◽  
Marie-France Hurteau
Keyword(s):  
Control System ◽  
Central Pattern Generators ◽  
Top Down ◽  
Bottom Up ◽  
Sensory Inputs ◽  
Sensory Regulation ◽  
Before And After ◽  
Pattern Generators

Propriospinal pathways are thought to be critical for quadrupedal coordination by coupling cervical and lumbar central pattern generators (CPGs). However, the mechanisms involved in relaying information between girdles remain largely unexplored. Using an in vitro spinal cord preparation in neonatal rats, Juvin and colleagues ( Juvin et al. 2012 ) have recently shown sensory inputs from the hindlimbs have greater influence on forelimb CPGs than forelimb sensory inputs on hindlimb CPGs, in other words, a bottom-up control system. However, results from decerebrate cats suggest a top-down control system. It may be that both bottom-up and top-down control systems exist and that the dominance of one over the other is task or context dependent. As such, the role of sensory inputs in controlling quadrupedal coordination before and after injury requires further investigation.

Role of top-down and bottom-up forces on the invasibility of intertidal macroalgal assemblages

2013 ◽  
Vol 76 ◽  
pp. 178-186 ◽  
Author(s):  
Fátima Vaz-Pinto ◽  
Celia Olabarria ◽  
Francisco Arenas
Keyword(s):  
Top Down ◽  
Bottom Up

Computational Models of Learning Mechanisms in Psychosis

2017 ◽  
Author(s):  
Andreas Heinz
Keyword(s):  
Mental Disorders ◽  
Psychiatric Disorders ◽  
Computational Models ◽  
The Self ◽  
Psychotic Experiences ◽  
Learning Mechanisms ◽  
Top Down ◽  
Bottom Up ◽  
Surrounding World

Psychotic experiences may best be described as an alteration in the self-ascription of thoughts and actions, which is associated with a profoundly altered experience of oneself and the surrounding world. Computational models of key symptoms of psychiatric disorders are discussed with respect to the attribution of salience and self-relatedness to otherwise irrelevant stimuli and the role of top-down modelling in the generation of delusions. Top-down and bottom-up approaches in understanding mental disorders and their computational models are compared and critically reflected.

The role of the third sector working with the hard and soft structures of public–private partnerships to promote individual health and reinvigorated, healthier communities

2020 ◽  
pp. 301-318
Author(s):  
Tony Chasteauneuf ◽  
Tony Thornton ◽  
Dean Pallant
Keyword(s):  
Health Outcomes ◽  
Local Authority ◽  
Third Sector ◽  
Public Private Partnerships ◽  
Top Down ◽  
Bottom Up ◽  
The Third ◽  
Individual Health ◽  
The Third Sector

This chapter discusses the role of the third sector working with the hard and soft structures of public–private partnerships to promote healthier individuals and communities. It considers how a recommitment to the 'local authority' of citizens and beneficiaries offers the possibility of revitalised and healthier individuals and reinvigorated and healthier communities, which are unachievable through the hard and soft structures of the commissioner/provider statutory approach. The chapter then identifies the pivotal dynamic of one-to-one relationships in these processes and their association with health outcomes (emotional, physical, and spiritual) alongside the opportunities and challenges in agencies engaging/re-engaging with the agency of citizens and beneficiaries. It explores the tension between the 'agency' of citizens and beneficiaries that constitutes bottom-up power and 'agencies' with top-down power. The chapter also looks at the benefits of embracing the expertise and investment of individuals and their communities in their personal and shared lives, how this can be supported and how it can be undermined.

5. Simple complex questions

2020 ◽  
pp. 73-93
Author(s):  
Jaboury Ghazoul
Keyword(s):  
Tropical Forest ◽  
Tree Species ◽  
Dominant Species ◽  
Environmental Changes ◽  
Top Down ◽  
Simple Complex ◽  
Bottom Up ◽  
Biological Richness

‘Simple complex questions’ contrasts top-down and bottom-up approaches to ecological puzzles. For example, plants evade herbivores with physical defences that render them toxic or unpalatable, and the predators then evolve their own defences. How can a tropical forest support over 1,000 different tree species in a 50-hectare plot? When trees in the same forest differ in their response to environmental changes, can we still describe their environment as a niche? In species-rich systems, is there stability in complexity? Do we need so many species? Even when answering this question, we might benefit from a less human-centred approach. Earth’s biological richness has resonance beyond the dominant species.

Imprinting Beyond the Founding Phase: How Sedimented Imprints Develop over Time

2020 ◽  
Vol 31 (6) ◽  
pp. 1579-1600
Author(s):  
Lien De Cuyper ◽  
Bart Clarysse ◽  
Nelson Phillips
Keyword(s):  
Process Model ◽  
External Environment ◽  
Top Down ◽  
Bottom Up ◽  
Social Venture ◽  
Changes Over Time ◽  
Over Time ◽  
Do So

In this study, we build on the foundational observations of Selznick and Stinchcombe that organizations bear the lasting imprint of their founding context and explore how characteristics shaped during founding are coherently carried forward through time. To do so, we draw on an ethnography of a social venture where the entrepreneurs left soon after founding. In examining how an initial organizational imprint evolves beyond a venture’s founding phase, we focus on the actions and interactions of organizational members, the founders’ imprint, the venture’s new leadership, and the external environment. The process model we develop shows how the organizational imprint evolves as a consequence of the interplay between top-down and bottom-up forces. We first find that the initial imprint is transmitted through a bottom-up mechanism of imprint reinforcement, and second, that the venture is reimprinted after the founding period through two processes which we call imprint reforming and imprint coupling. The result of this is the formation of a sedimented imprint. Our findings further illuminate that, although the initial imprint sticks, its function and manifestation changes over time.

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