152 research outputs found
Hybridity and conflicting logicsâand what if not? A historical exploration of a XIVâXVI century social entity in Venice
AbstractThis paper sets out to explore how hybrid organizations managed their established institutional complexity in the past, and what place was there for accounting in this endeavor. The paper draws on a historical case study of how a social entity operated in 14thâ16thâcentury Venice. Ca' di Dio, a hospice providing hospitality and care to poor women, is what today we would call a "hybrid organization," in that it was born at the crossroads of ecclesiastic and public jurisdictions, it was autonomously administered, selfâfinanced through commercial activities, but operated within the public control of the State. It will be found that Ca' di Dio worked within a complex arrangement of multiple logics, that these logics coexisted without particular tension or conflict, and that accounting was a central practice to manage Ca' di Dio activities, despite its noncommercial nature. The paper thus, while contributing to documenting the presence of hybrid organizations in the past, also questions the presupposed tension and conflict in logics that these organizations are thought to come with. Finally, it also documents the trivial, but overlooked, role of accounting as primarily a calculative tool for everyday management in hybrid organizations
Hybridity and conflicting logicsâand what if not? A historical exploration of a XIVâXVI century social entity in Venice
This paper sets out to explore how hybrid organizations managed their established institutional complexity in the past, and what place was there for accounting in this endeavor. The paper draws on a historical case study of how a social entity operated in 14thâ16th-century Venice. Caâ di Dio, a hospice providing hospitality and care to poor women, is what today we would call a âhybrid organization,â in that it was born at the crossroads of ecclesiastic and public jurisdictions, it was autonomously administered, self-financed through commercial activities, but operated within the public control of the State. It will be found that Caâ di Dio worked within a complex arrangement of multiple logics, that these logics coexisted without particular tension or conflict, and that accounting was a central practice to manage Caâ di Dio activities, despite its noncommercial nature. The paper thus, while contributing to documenting the presence of hybrid organizations in the past, also questions the presupposed tension and conflict in logics that these organizations are thought to come with. Finally, it also documents the trivial, but overlooked, role of accounting as primarily a calculative tool for everyday management in hybrid organizations
Strategy Visualization, Cognitive Frames, and Strategy Renewal in SMEs
This paper provides experimental evidence that visual representation of strategy and related concepts increases the probability of updating the cognitive frames of small entrepreneurs. An original strategy mapping technique and Osterwalder and Pigneurâs (2010) business model canvas were used to help 42 small entrepreneurs to critically review their current strategies and choices. A questionnaire about perceptions of the external environment and internal structure was submitted to the participants before and after the experiment. The same questionnaire was submitted twice to a matched control group of 50 SME entrepreneurs who were not involved in any activity. The results show that involvement in the visualization experiment significantly increased the probability of the participant changing perceptions on strategic issues, with a stronger impact for strategy mapping. The results are interpreted as indicative of a positive contribution of visual representation in strategy renewal
Interference at the Single Photon Level Along Satellite-Ground Channels
Quantum interference arising from superposition of states is a striking
evidence of the validity of Quantum Mechanics, confirmed in many experiments
and also exploited in applications. However, as for any scientific theory,
Quantum Mechanics is valid within the limits in which it has been
experimentally verified. In order to extend such limits, it is necessary to
observe quantum interference in unexplored conditions such as moving terminals
at large distance in Space. Here we experimentally demonstrate single photon
interference at a ground station due to the coherent superposition of two
temporal modes reflected by a rapidly moving satellite thousand kilometers
away. The relative speed of the satellite induces a varying modulation in the
interference pattern. The measurement of the satellite distance in real time by
laser ranging allowed us to precisely predict the instantaneous value of the
interference phase. We then observed the interference patterns with visibility
up to with three different satellites and with path length up to 5000
km. Our results attest the viability of photon temporal modes for fundamental
tests of Physics and Quantum Communications in Space.Comment: Version accepted for publication in Phys. Rev. Let
The impact of external support on microbusinessesâ strategic renewal
Abstract. The study explores whether external support, provided to microbusinesses through business support services, effectively facilitates companiesâ strategic renewal and improves firm performance. It uses data collected through questionnaires submitted to a group of firms participating in a project developed by a trade association and privately funded and a matched control group. The project aimed to increase microbusinessesâ competitive potential and contrast the consequences of the unfavourable external environment.
A quasi-experimental research design compared the changes observed in firms involved in the project and a control group of firms with similar characteristics, to test the impact of the external support intervention on microbusinessesâ strategic renewal using a control group for both pre- and post-intervention periods.
Findings show that participation in the project contributed positively to strategic renewal. This, in turn, had a significant positive effect on financial performance.
This study contributes to the literature on the antecedents of strategic renewal, examining the impact of the exposure to external stimuli, such as the ones favoured by the project, on microbusinessesâ entrepreneurial orientation, organizational learning, and social capital. It also contributes to understanding external support mechanismsâ effectiveness in mitigating structural limitations hindering manufacturing SMEsâ success.
Among the studyâs limitations, the sample size is limited due to the feasibility of involving and following in the project a higher number of firms. Then, little is known about the impactâs persistence after the projectâs end, which should be investigated
Comparative analysis of plant genomes allows the definition of the "Phytolongins": a novel non-SNARE longin domain protein family
<p>Abstract</p> <p>Background</p> <p>Subcellular trafficking is a hallmark of eukaryotic cells. Because of their pivotal role in the process, a great deal of attention has been paid to the SNARE proteins. Most R-SNAREs, or "longins", however, also possess a highly conserved, N-terminal fold. This "longin domain" is known to play multiple roles in regulating SNARE activity and targeting via interaction with other trafficking proteins. However, the diversity and complement of longins in eukaryotes is poorly understood.</p> <p>Results</p> <p>Our comparative genome survey identified a novel family of longin-related proteins, dubbed the "Phytolongins" because they are specific to land plants. Phytolongins share with longins the N-terminal longin domain and the C-terminal transmembrane domain; however, in the central region, the SNARE motif is replaced by a novel region. Phylogenetic analysis pinpoints the Phytolongins as a derivative of the plant specific VAMP72 longin sub-family and allows elucidation of Phytolongin evolution.</p> <p>Conclusion</p> <p>"Longins" have been defined as R-SNAREs composed of both a longin domain and a SNARE motif. However, expressed gene isoforms and splice variants of longins are examples of non-SNARE motif containing longins. The discovery of Phytolongins, a family of non-SNARE longin domain proteins, together with recent evidence on the conservation of the longin-like fold in proteins involved in both vesicle fusion (e.g. the Trs20 tether) and vesicle formation (e.g. Ï and ÎŒ adaptin) highlight the importance of the longin-like domain in protein trafficking and suggest that it was one of the primordial building blocks of the eukaryotic membrane-trafficking machinery.</p
PMI, asset intangibili e rapporti con le banche
La valorizzazione degli asset intangibili rappresenta un fattore critico per lâaccesso ai finanziamenti
da parte delle Pmi, poiché fornisce alla banca un set di informazioni in grado di migliorare
lâefficacia del processo di valutazione del rischio. Queste informazioni non sono perĂČ
immediatamente disponibili ma devono essere prodotte dalle imprese. A tale scopo Ăš stato
realizzato un progetto di ricerca europeo che ha elaborato un modello di analisi e valorizzazione
degli asset intangibili, poi applicato a un campione di Pmi per verificarne lâimpatto sulle
relazioni con i soggetti finanziatori. I risultati della sperimentazione confermano la rilevanza
degli asset intangibili per la competitivitĂ delle imprese e per la valutazione del rischio, ma evidenziano
la necessitĂ di ulteriori sforzi per pervenire a indicatori di comprovato valore informativo
e caratterizzati da criteri di valutazione condivisi
Postselection-loophole-free Bell violation with genuine time-bin entanglement
Entanglement is an invaluable resource for fundamental tests of physics and
the implementation of quantum information protocols such as device-independent
secure communications. In particular, time-bin entanglement is widely exploited
to reach these purposes both in free-space and optical fiber propagation, due
to the robustness and simplicity of its implementation. However, all existing
realizations of time-bin entanglement suffer from an intrinsic postselection
loophole, which undermines their usefulness. Here, we report the first
experimental violation of Bell's inequality with "genuine" time-bin
entanglement, free of the postselection loophole. We introduced a novel
function of the interferometers at the two measurement stations, that operate
as fast synchronized optical switches. This scheme allowed to obtain a
postselection-loophole-free Bell violation of more than nine standard
deviations. Since our scheme is fully implementable using standard fiber-based
components and is compatible with modern integrated photonics, our results pave
the way for the distribution of genuine time-bin entanglement over long
distances.Comment: RevTe
Regression of Environmental Noise in LIGO Data
We address the problem of noise regression in the output of
gravitational-wave (GW) interferometers, using data from the physical
environmental monitors (PEM). The objective of the regression analysis is to
predict environmental noise in the gravitational-wave channel from the PEM
measurements. One of the most promising regression method is based on the
construction of Wiener-Kolmogorov filters. Using this method, the seismic noise
cancellation from the LIGO GW channel has already been performed. In the
presented approach the Wiener-Kolmogorov method has been extended,
incorporating banks of Wiener filters in the time-frequency domain,
multi-channel analysis and regulation schemes, which greatly enhance the
versatility of the regression analysis. Also we presents the first results on
regression of the bi-coherent noise in the LIGO data
- âŠ