Search results for "Uber"
showing 10 items of 1027 documents
Prisas intergubernamentales / 4
2004
Este artículo forma un bloque junto a "Ambiciones de un europeísta (1)" (El País, 2 de octubre de 2004); "Matria Europa, 2" (El País, 16 de octubre de 2004) y "El demonio social en la Constitución / 3" (El País, 23 de octubre de 2004).
¿Una Constitución para políticos?
2002
Una trayectoria Europeísta
2005
Consolidated challenge to social demand for resilient platforms : Lessons from Uber's global expansion
2017
Many in the industry see the ride-sharing company Uber as the significant advancement through information and communication technology (ICT) particularly of the digital service platform and sharing economy. Uber has been exploring the new frontier of the ICT-driven disruptive business model (IDBM) and succeeded in its global expansion to over 479 cities in more than 75 countries worldwide in June of 2016. Such rapid expansion provides constructive insights regarding the significance of IDBM, not only in transportation but also in almost all other business fields. While at the same time Uber's legal battles in some cities around the world raise a serious question regarding the rationale of I…
Co-evolution of three mega-trends nurtures un-captured GDP – Uber's ride-sharing revolution
2016
Uber used a disruptive business model driven by digital technology to trigger a ride-sharing revolution. The institutional sources of the company’s platform ecosystem architecture were analyzed to explain this revolutionary change. Both an empirical analysis of a co-existing development trajectory with taxis and institutional enablers that helped to create Uber’s platform ecosystem were analyzed. The analysis identified a correspondence with the “two-faced” nature of ICT that nurtures un-captured GDP. This two-faced nature of ICT can be attributed to a virtuous cycle of decline in prices and an increase in the number of trips. We show that this cycle can be attributed to a self-propagating …
Очерки современныхъ казней: съ рисунками съ натуры и съ планами
1906
Уточнение на обложке книги: Застенок и суд в Риге. Белостокский погром. Шлиссельбург: казнь Балмашева и Каляева
Epidemiologia della tubercolosi in Sicilia: attività del Laboratorio di Riferimento Regionale per la Sorveglianza e il Controllo della Tubercolosi in…
2019
Introduzione In Sicilia dal 2014 è stato istituito dall’Assessorato Regionale alla Salute il Laboratorio di Riferimento Regionale per la Sorveglianza ed il Controllo della Tubercolosi (TB), per sviluppare e integrare strumenti epidemiologici tradizionali e molecolari in una regione in cui intensi flussi migratori, insediamenti stabili frutto di pregresse migrazioni ed evoluzione demografica della popolazione autoctona compongono un complesso quadro epidemiologico. Materiali e metodi Sono stati analizzati i flussi dei dati sanitari correnti del periodo 2010- 2017, in particolare le notifiche del Sistema Informativo delle Malattie Infettive e le Schede di Dimissione Ospedaliera. Dal 2014, il …
Determination of acrylamide in foods by pressurized fluid extraction and liquid chromatography-tandem mass spectrometry used for a survey of Spanish …
2006
An automated and rapid method for the determination of acrylamide in different food products is presented. The method involves pressurized fluid extraction (PFE) of foods with acetonitrile and precipitation with Carrez reagents. The final extract is analysed by liquid chromatography coupled to electrospray ionization tandem mass spectrometry (ESI-MS-MS). The main parameters affecting the performance of ESI-MS-MS and PFE were optimized using a design of experiments approach. The limit of quantification of the method was 5 microg kg(-1), and recoveries from incurred samples ranged between 93 and 101%. The accuracy was evaluated using the reference test materials FAPAS T3002, T3005 and T3011. …
HPLC-DAD-ESI-MS2analytical profile of extracts obtained from purple sweet potato after green ultrasound-assisted extraction
2016
International audience; Ultrasound pre-treatment (UAE) was applied to assist the extraction of valuable compounds (polyphenols (especially anthocyanins), and proteins) from purple sweet potato (PSP). Under optimum conditions (ultrasound time (40 min); supplementary hot extraction (80 °C) up to 120 min; pH: 2.5; ethanol concentration: 58%), the highest concentrations of polyphenols (3.877 mg/g), anthocyanins (0.293 mg/g), and proteins (0.753 mg/g) were found, with minimal specific energy consumption (8406 J/mg).Moreover, anthocyanin and non-anthocyanin polyphenols in PSP extract from optimized extraction temperature were identified using HPLC-DAD-ESI-MS2. The major identified anthocyanins we…
Evaluating the quality of the Mexican fruit-fly, Anastrepha ludens, as host for the parasitoid Melittobia digitata
2013
We investigated the presence of Melittobia digitata (Hymenoptera: Eulophidae) and its associations with its natural hosts in Veracruz, Mexico. The parasitoid was confirmed to be present and found to attack prepupae of Trypoxylon and Sceliphron (Hymenoptera: Crabronidae and Sphecidae, respectively) mud daubers as well as pupae of the Mexican fruit fly Anastrepha ludens (Diptera: Tephritidae). Since A. ludens is a very important pest of citrus and mango in Mexico and Central America, we evaluated, in laboratory experiments, the quality of A. ludens as host of M. digitata comparing the development of the parasitoid in another unrelated fly species (Sarcophaga [Neobellieria] bullata) (Diptera: …