1,721,072 research outputs found
L’innovazione di prodotto e processo nelle piccole imprese metalmeccaniche: caratteristiche e relazioni con le performance aziendali
No full textL’innovazione viene indicata da più osservatori come l’unica strada che può condurre le imprese italiane, in particolare le PMI manifatturiere, verso un futuro potenzialmente lontano dalle minacce derivanti da un’arena competitiva basata solo sui costi e sulla flessibilità, nella quale i differenziali delle PMI sono progressivamente erosi da concorrenti di paesi a basso costo del lavoro. Al tempo stesso l’innovazione non è una via univoca e priva di rischi, al contrario un’impresa può innovare in modi diversi, assumendo livelli differenti di rischio.Questo articolo ha l’obiettivo di fornire alcune coordinate per comprendere se e quale strada innovativa abbiano imboccato le imprese artigiane del settore metalmeccanico della provincia di Padova. Il delineare i modi di innovare di tali imprese aiuta a individuare quali siano le scelte di policy di cui le stesse imprese hanno bisogno per continuare ad alimentare la propria capacità innovativa e conseguentemente le proprie performance aziendali
Il B2E nell’e-learning
No full textle politiche di E-HRM sono state molto spesso guidate da driver quali il taglio dei costi e l’aumento della flessibilità dei processi. Anche l’investimento in corporate e-learning è stato orientato soprattutto alla ricerca di efficienza, tralasciando potenziali benefici sia nei processi di condivisione della conoscenza che in quelli di fidelizzazione dei dipendenti. Questo è in parte dovuto all’ottica adottata nell’analisi e nella progettazione dell’e-learning ancora troppo ancorata alle categorie concettuali della formazione tradizionale (l’erogazione considerata in un’ottica strettamente sequenziale, il processo pensato spesso solo in termini di trasferimento di conoscenze entro il contesto formativo e slegato da quello lavorativo, gli attori in campo: principalmente i docenti e i discenti). Evidenziando i limiti di un approccio di questo tipo, l’articolo propone di ripensare il framework di riferimento per l’analisi e la progettazione dell’e-learning passando a un’ottica B2E. L’articolo oltre a proporre il B2E per l’e-learning, testa la sua applicabilità come modello di analisi e progettazione, mediante la discussione dei dati di un ricerca empirica realizzata in 42 imprese di due settori nei quali l’e-learning è maggiormente diffuso in Italia: il settore bancario e quello farmaceutico
Multi-sampling Asymmetric Dual-Edge Digital Pulse-width Modulator
No full textDigital controls are generally characterized by significant phase delays due to the analog-to-digital conversion process, sampling time, algorithm computation time, and the digital pulse-width modulator's architecture. Usually, the delay introduced by the latter has a more significant impact than previous ones, especially when approaching the switching frequency. The multi-sampling operation is largely adopted to reduce this delay. Recently proposed, double-sampling asymmetrical dual-edge (ADE) carrier-based digital pulse-width modulators (DPWM) have proven to operate with zero phase delay. Therefore, the multi-sampling architecture might provide even better results. Unfortunately, its documented operating point dependence does not allow such modulators to be used effectively. This article examines an improved multi-sampling ADE-DPWM architecture where the dependency on the operating point is significantly reduced. This manuscript also includes an accurate small-signal transfer function model. The proposed architecture and the developed small-signal model are validated in simulation and experimentally. In addition, experimental tests on a multi-loop voltage-controlled single-phase voltage-source inverter revealed the advantages of the proposed architecture over the more traditional DPWM one based on a trailing-triangle edge carrier
Multi-sampling Digital Pulse-width Modulator based on Asymmetric Dual-Edge Carrier
Full text linkIn the domain of digital control systems, significant phase delays stem from various factors, such as analog-to-digital conversion, finite sampling frequency values, algorithm computation time, and the digital pulsewidth modulator (DPWM). Typically, the delay introduced by DPWMs has a more substantial impact than the preceding factors. While numerous approaches have been proposed to mitigate or eliminate such delays, multisampling stands out as one of the most commonly employed methods. However, recent innovative architectures, particularly those based on the asymmetric dual-edge (ADE) carrier, have demonstrated that digital pulsewidth modulation (PWM) with zero phase delay, or even positive phase gain, can be effectively implemented. This suggests the possibility of further enhancing dynamic performance by increasing the number of samples per cycle. Unfortunately, the potential benefits of multisampling may be compromised by the operating point dependence issues inherent in ADE-DPWM. This article introduces a comprehensive architecture and a conclusive design approach for multisampling ADE-DPWM, facilitating the harnessing of multisampling benefits without encountering operating point issues. The experimental verification includes assessments of small-signal responses and robustness against operating point variations. Additional experimental tests are conducted to emphasize the improved dynamic performance compared to state-of-the-art trailing-triangle edge carrier-based modulators
SINDROME DELLA BANDA AMNIOTICA E RESPONSABILITA' PROFESSIONALE DELL'ECOGRAFISTA. DESCRIZIONE DI UN CASO.
No full textIn the growing malpractice context, claims for missed diagnosis of foetal malformations present different and complex medico- legal problems. They need to be deeply analysed in these three main aspects: the identification of the possible clinician’s error, the type of information given to the woman about the foetal wellbeing and the damage evaluation.
We present a peculiar case, in which the main problems are clarifying if the foetal malformation was recognizable during prenatal life (and when) and verifying the hypothesis that the missed identification of the foetal malformation was due to its actual absence at the moment of the foetal ultrasound examination contested
The competent middle manager. Framing individual knowledge in North-East Italian SMEs
No full textIn SMEs, where organisational structures and management systems
are usually informal and where some key people represent the main and sometimes exclusive repository of knowledge, studying individuals, analysing the nature of their knowledge, identifying their personal characteristics and how these relate to individual and business performance, constitute a strategic area of research (at the moment almost unexplored), potentially rich of implications in terms of human resource management systems’ design.
This paper represents a first attempt in this direction of research. It uses competency modelling for assessing the nature and types of individual knowledge developed in SMEs, presenting research results on a country, Italy, where SMEs represent the backbone of the economy. They show that ‘best’ (most effective) middle managers perceive their organisational role as wider than their colleagues and have a repertoire of competencies comparatively more
aligned with firm’s expectations and requirements
The adoption of corporate e-learning in Italy
No full textThe diffusion process of e-learning has been, in recent years, at
the centre of several studies. These researches focused mainly on
the USA case, where there has been an exponential adoption
both in the public and private sectors. From this perspective the
paper would give a contribution to understand the diffusion
process of e-learning in a specific country and it deals with the
following questions: are there relevant consistencies in the rate
and the model of adoption of e-learning solutions in Italian
companies? What are the causes of this process? Building on
bandwagon theories and institutional literature, the paper
analyses the antecedents of the adoption process in Italy, asking
whether it is determined by the rational search for economic
benefits, or is it driven by the fear of lost legitimacy or strategic
advantage under institutional or competitive bandwagon
pressures. The paper also looks into the solutions adopted by the
Italian firms, studying their e-learning strategies. To answer the
research questions and to test the related propositions, an
empirical study has been developed based on a survey, on
interviews and document analysis. Since the e-learning diffusion
process in Italy is at an early stage, the research has been
undertaken in two sectors, pharmaceutical and banking,
where e-learning has been adopted to a greater extent than in
other sectors
Knowledge growth through inter-organizational knowledge recombination: an analysis of the US semiconductor industry between 1976-2002
No full textSi dà troppo spesso per scontato che le scelte e le soluzioni organizzative incidano profondamente sulle performance aziendali. Conseguentemente, i successi, le forze competitive emergenti, gli interventi efficaci sembrerebbero nascere e dipendere dalle capacità di innovare e di differenziare gli assetti organizzativi. I contributi raccolti in questo volume offrono una risposta meno scontata e più efficace, tracciando a partire dai diversi programmi e progetti di ricerca un percorso che tocca modalità, motivi, tempi e luoghi della differenza organizzativa. Diversi i temi che compongono questo mosaico di studi: il valore dell’organizzazione e le performance aziendali; le relazioni di lavoro e la gestione delle risorse umane; i modelli organizzativi dell’innovazione; le tecnologie di informazione e di comunicazione e gli assetti organizzativi; i fattori istituzionali, la cultura organizzativa e il management della diversità; le differenze organizzative nei settori economici, nelle relazioni interorganizzative e nel family business; le misure e la misurazione delle differenze negli studi organizzativi. Argomenti, tesi e conclusioni presentati e discussi sono un’occasione interessante di approfondimento sia per chi debba progettare, realizzare e gestire forme organizzative innovative, sia per chi voglia elaborare nuovi percorsi di ricerca e di studio
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