Search results for "lean"
showing 10 items of 3611 documents
Dirigenti scolastici & leadership distribuita. Un’indagine nel territorio siciliano
2022
La scuola è un’istituzione, costruita socialmente su fondamenta normative, orientamenti valoriali, credenze, sistemi di significato, consuetudini, e i cui protagonisti sono, tra gli altri, insegnanti e dirigenti. Parlare di leadership vuol dire identificare quali regimi di verità e conoscenza vengono proposti e quali dispositivi istituzionali vengono messi in gioco per la creazione delle politiche educative1. Una lunga tradizione di studi nel campo della school effectiveness ha portato a definire la leadership esercitata dai dirigenti scolastici unica e differente dalle altre tipologie2 , ma sono ancora ampiamente dibattute le questioni in merito a quali valori, qualità, pratiche contribuis…
Lean orientert effektivisering og automatisering av produksjon for små og mellomstore bedrifter
2014
Masteroppgave i industriell økonomi og teknologiledelse IND 590 Universitetet i Agder 2014 Den norske leverandørindustrien for sprøytestøping har vært inne i en god utvikling de siste par årene, dette til tross for økende konkurranse fra lavkostland. Den endelige hovedrapporten for grunnlaget av inntektsoppgjørene 2014, redegjort av 'Teknisk beregningsutvalg for inntektsoppgjørene' (TBU), peker på kunnskapsutvikling som en bærende forutsetning for konkurranseevne hos norsk industri (TBU, 2014). Et viktig bidrag for konkurranseevne vil være den norske samarbeidsmodellen2 og den skandinaviske arbeidslivskulturen. Den norske samarbeidsmodellen har mange likhetstrekk til Lean-tankegangen, spesi…
Il contesto istituzionale nipponico e l’evoluzione della “lean production”
2006
Searches for lepton number violation and resonances in K± → πμμ decays
2017
The NA48/2 experiment at CERN collected a large sample of charged kaon decays to final states with multiple charged particles in 2003–2004. A new upper limit on the rate of the lepton number violating decay K±→π∓μ±μ± is reported: B(K±→π∓μ±μ±)<8.6×10−11 at 90% CL. Searches for two-body resonances X in K±→πμμ decays (such as heavy neutral leptons N4 and inflatons χ ) are also presented. In the absence of signals, upper limits are set on the products of branching fractions B(K±→μ±N4)B(N4→πμ) and B(K±→π±X)B(X→μ+μ−) for ranges of assumed resonance masses and lifetimes. The limits are in the (10−11,10−9) range for resonance lifetimes below 100 ps.
Flash infrared annealing as a cost-effective and low environmental impact processing method for planar perovskite solar cells
2019
Abstract For successful commercialization of perovskite solar cells, straightforward solutions in terms of environmental impact and economic feasibility are still required. Flash Infrared Annealing (FIRA) is a rapid method to fabricate perovskite solar cells with efficiencies >18% on simple, planar architecture, which allows a film synthesis in only 1.2 s, faster than the previous report based in a meso architecture and all of them without the usage of antisolvent. In this work, through a comparative study with the common lab-scale method, the so-called antisolvent (AS), the main photovoltaic parameters and working mechanisms obtained from impedance spectroscopy (IS) measurements show simil…
Temperature effects explain continental scale distribution of cyanobacterial toxins
2018
Insight into how environmental change determines the production and distribution of cyanobacterial toxins is necessary for risk assessment. Management guidelines currently focus on hepatotoxins (microcystins). Increasing attention is given to other classes, such as neurotoxins (e.g., anatoxin-a) and cytotoxins (e.g., cylindrospermopsin) due to their potency. Most studies examine the relationship between individual toxin variants and environmental factors, such as nutrients, temperature and light. In summer 2015, we collected samples across Europe to investigate the effect of nutrient and temperature gradients on the variability of toxin production at a continental scale. Direct and indirect…
State of the art and prospects for halide perovskite nanocrystals
2021
Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG Metal-halide perovskites have rapidly emerged as one of the most promising materials of the 21st century, with many exciting properties and great potential for a broad range of applications, from photovoltaics to optoelectronics and photocatalysis. The ease with which metal-halide perovskites can be synthesized in the form of brightly luminescent colloidal nanocrystals, as well as their tunable and intriguing optical and electronic properties, has attracted researchers from different disciplines of science and technology. In the last few years, there has been a significant progress in the shape-controlled synthesis of …
Purcell Enhancement and Wavelength Shift of Emitted Light by CsPbI3 Perovskite Nanocrystals Coupled to Hyperbolic Metamaterials
2020
Manipulation of the exciton emission rate in nanocrystals of lead halide perovskites (LHPs) was demonstrated by means of coupling of excitons with a hyperbolic metamaterial (HMM) consisting of alternating thin metal (Ag) and dielectric (LiF) layers. Such a coupling is found to induce an increase of the exciton radiative recombination rate by more than a factor of three due to the Purcell effect when the distance between the quantum emitter and HMM is nominally as small as 10 nm, which coincides well with the results of our theoretical analysis. Besides, an effect of the coupling-induced long wavelength shift of the exciton emission spectrum is detected and modeled. These results can be of i…
Software Startup ESSENCE : How Should Software Startups Work?
2020
Software startups need to work in a systematic fashion just like mature organizations. However, existing software engineering methods and practices are not aimed at software startups. They do not account for the business aspect of startups and may not be well suited for software startups in general. The Lean Startup Methodology on the other hand contains some useful practices for software startups but is nonetheless impractical, offering little in the way of telling you what to do. Software startups are thus required to tailor their own method. Currently, many software startups simply work ad hoc or use various Agile methods and practices. In terms of Agile methods and practices, little con…
Asiakaslähtöisyys, uusien liiketoimintamallien kokeilu ja iteratiivinen suunnittelu liiketoiminnan kehittämisessä suomalaisissa ohjelmistoyrityksissä
2015
Liiketoimintamalli on käsite, joka on vakiintunut liiketalouden ammattilaisten keskuudessa 1990-luvulta alkaen elektronisen liiketoiminnan kehittymisen myötä. Huolimatta siitä, että liiketoimintamalli käsitteenä on yleistynyt, tieteellistä yhteisymmärrystä siitä mitä sillä tarkasti tarkoitetaan, mitä se pitää sisällään ja miten sitä kehitetään, ei ole saavutettu. Aihe on vielä epäselvä varsinkin ohjelmistoalalla. Viimeaikaiset tieteelliset artikkelit painottavat arvon luomista, toimittamista ja vangitsemista liiketoimintamalleissa, sekä asiakaskeskeisyyttä ja kokeilua keskeisinä teemoina niiden suunnittelussa ja kehittämisessä. Nämä voisivat olla hyviä näkökulmia myös ohjelmistoliiketoiminn…