1,270 research outputs found
Exploring Tension in Hybrid Organizations in Times of Covid-19 Crisis. The Italian Benefit Corporations’ experience
The COVID-19 pandemic has caused an unprecedented social and
economic crisis, not least for hybrid organisations, as they must
manage the tension arising from their dual mission to create
social and economic value. Building on a theoretical framework
for hybrid tension, our work contextualises how tensions emerge
and are managed in hybrid organisations when they are exposed to
exogenous shocks. We address the following research question.
How have hybrid organisations managed the tensions arising from
their dual purpose during the COVID-19 crisis? Our focus is on
Italian benefit corporations, which are organisations combining
social and economic objectives. We conduct two focus groups with
12 Italian benefit corporations. Our findings show the emergence of
four constructs that capture the responses to the COVID-19 crisis:
social and/or commercial orientation; technological characterisation;
internal and external stakeholder relationship; openness to changes.
We explain the relationship of these constructs via a framework of
performing, organising, learning, and belonging tensions
Mission, governance, and accountability of benefit corporations: Toward a commitment device for achieving commercial and social goals
Benefit corporations (BCs) are profit-with-purpose organizations regulated by a legal framework for establishing explicit commitments in terms of multi-stakeholder governance and accountability structures. We comprehensively analyze the theoretical alignment of four concepts (ownership, mission, governance, and accountability) to explain the legal rationale for BCs' unique corporate form. However, the boundaries of BC legislation are blurry, leaving them open to top-down governance arrangements and weak accountability. To explore this ambiguity, this paper investigates whether BCs implement a de facto (i.e., beyond the letter of the law) multi-stakeholder structure with governance models and downward accountability mechanisms that balance different stakeholders' interests, instead of focusing only on shareholder profits. This further highlight the soft boundaries imposed by the BC regulatory framework and suggests that more work is needed to explore the relationship between governance models that differently balance stakeholders' claims and the firm's social performance
A fretting fatigue setup for testing shrink-fit connections and experimental evidence of the strength enhancement induced by deep rolling
Fretting tests are usually performed on flat specimens with lateral contacting pads. The shrink-fitted connection, which experiences fretting at the edge of the contact, prompted the alternative use of a round-shaped specimen. This simplified the equipment and provided an accurate alignment between the fretting specimen and the external hub which plays the role of the pad. The deep rolling treatment can also be efficiently applied to a round shape, which would otherwise be difficult on the flat specimen geometry. After introducing this solution for fretting testing, the paper shows an experimental campaign on three shrink-fitted connections with different sizes and material combinations. There was a significant improvement in fretting fatigue strength, induced by the deep rolling, for all three specimen types. Finally, scanning electron microscopic analyses provided insights into the fretting fatigue nucleation mechanisms both for untreated and deep-rolled specimens
Total Energy Expenditure and Body Composition of Children with Developmental Disabilities
Background Obesity prevalence is increased in children with developmental disabilities, specifically in children with spina bifida and Down syndrome. Energy expenditure, a critical aspect of weight management, has been extensively studied in the typically developing population, but not adequately studied in children with developmental disabilities. Objective Determine energy expenditure, fat-free mass and body fat percentile and the impact of these findings on recommended caloric intake in children with spina bifida and Down syndrome. Methods/Measures This pilot study included 36 children, 18 with spina bifida, 9 with Down syndrome and 9 typically developing children. Half of the children with spina bifida were non-ambulatory. Doubly labeled water was used to measure energy expenditure and body composition. Descriptive statistics described the sample and MANOVA and ANOVA methods were used to evaluate differences between groups. Results Energy expenditure was significantly less for children with spina bifida who primarily used a wheelchair (p = .001) and children with Down syndrome (p = .041) when compared to children without a disability when adjusted for fat-free mass. However, no significant difference was detected in children with spina bifida who ambulated without assistance (p = .072). Conclusions Children with spina bifida and Down syndrome have a significantly decreased energy expenditure which directly impacts recommended caloric intake. No significant difference was detected for children with spina bifida who ambulated, although the small sample size of this pilot study may have limited these findings. Validating these results in a larger study is integral to supporting successful weight management of these children
Estimation of Orofacial Kinematics in Parkinson's Disease: Comparison of 2D and 3D Markerless Systems for Motion Tracking
Orofacial deficits are common in people with Parkinson's disease (PD) and
their evolution might represent an important biomarker of disease progression.
We are developing an automated system for assessment of orofacial function in
PD that can be used in-home or in-clinic and can provide useful and objective
clinical information that informs disease management. Our current approach
relies on color and depth cameras for the estimation of 3D facial movements.
However, depth cameras are not commonly available, might be expensive, and
require specialized software for control and data processing. The objective of
this paper was to evaluate if depth cameras are needed to differentiate between
healthy controls and PD patients based on features extracted from orofacial
kinematics. Results indicate that 2D features, extracted from color cameras
only, are as informative as 3D features, extracted from color and depth
cameras, differentiating healthy controls from PD patients. These results pave
the way for the development of a universal system for automatic and objective
assessment of orofacial function in PD.Comment: 4 pages, 1 tabl
Merging C-C σ-bond activation of cyclobutanones with CO2 fixation via Ni-catalysis
A carboxylative Ni-catalyzed tandem C-C σ-bond activation of cyclobutanones followed by CO2-electrophilic trapping is documented as a direct route to synthetically valuable 3-indanone-1-acetic acids. The protocol shows an adequate functional group tolerance and useful chemical outcomes (yield up to 76%) when AlCl3 is adopted as an additive. Manipulations of the targeted cyclic scaffolds and a mechanistic proposal based on experimental evidence complete the investigation
Electrochemical C(sp3)-H functionalization of ethers via hydrogen-atom transfer by means of cathodic reduction
: The chemo- and stereoselective electrochemical allylation/alkylation of ethers is presented via a C(sp3)-H activation event. The electrosynthetic protocol enables the realization of a large library of functionalized ethers (35 examples) in high yields (up to 84%) via cathodic activation of a new type of redox-active carbonate (RAC), capable of triggering HAT (Hydrogen-Atom-Transfer) events through the generation of electrophilic oxy radicals. The process displayed high functional group tolerance and mild reaction conditions. A mechanistic elucidation via voltammetric analysis completes the study
Designing an Egocentric Video-Based Dashboard to Report Hand Performance Measures for Outpatient Rehabilitation of Cervical Spinal Cord Injury
Background: Functional use of the upper extremities (UEs) is a top recovery priority for individuals with cervical spinal cord injury (cSCI), but the inability to monitor recovery at home and limitations in hand function outcome measures impede optimal recovery. Objectives: We developed a framework using wearable cameras to monitor hand use at home and aimed to identify the best way to report information to clinicians. Methods: A dashboard was iteratively developed with clinician (n = 7) input through focus groups and interviews, creating low-fidelity prototypes based on recurring feedback until no new information emerged. Affinity diagramming was used to identify themes and subthemes from interview data. User stories were developed and mapped to specific features to create a high-fidelity prototype. Results: Useful elements identified for a dashboard reporting hand performance included summaries to interpret graphs, a breakdown of hand posture and activity to provide context, video snippets to qualitatively view hand use at home, patient notes to understand patient satisfaction or struggles, and time series graphing of metrics to measure trends over time. Conclusion: Involving end-users in the design process and breaking down user requirements into user stories helped identify necessary interface elements for reporting hand performance metrics to clinicians. Clinicians recognized the dashboard's potential to monitor rehabilitation progress, provide feedback on hand use, and track progress over time. Concerns were raised about the implementation into clinical practice, therefore further inquiry is needed to determine the tool's feasibility and usefulness in clinical practice for individuals with UE impairments
Visible-Light Assisted Covalent Surface Functionalization of Reduced Graphene Oxide Nanosheets with Arylazo Sulfones
We present an environmentally benign methodology for the covalent functionalization (arylation) of reduced graphene oxide (rGO) nanosheets with arylazo sulfones. A variety of tagged aryl units were conveniently accommodated at the rGO surface via visible-light irradiation of suspensions of carbon nanostructured materials in aqueous media. Mild reaction conditions, absence of photosensitizers, functional group tolerance and high atomic fractions (XPS analysis) represent some of the salient features characterizing the present methodology. Control experiments for the mechanistic elucidation (Raman analysis) and chemical nanomanipulation of the tagged rGO surfaces are also reported
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