Search results for "Operations"
showing 10 items of 1692 documents
FACTORES HUMANOS ASOCIADOS A LOS ACCIDENTES MORTALES DE MOTOCICLETAS SCOOTER EN ESPAÑA
2017
Resumen Los accidentes de motocicleta son uno de los problemas de seguridad vial más importantes a nivel mundial. Hay una escasez de estudios específicos sobre las características de la accidentalidad de las motocicletas de tipo scooter, motivada por la falta de una definición precisa de este tipo de motocicleta y de la identificación de los distintos tipos de vehículos de dos ruedas en los registros de accidentes. El objetivo de este trabajo es determinar las características de los 293 conductores de motocicletas scooter fallecidos en España durante el periodo 2006-2011. Se realizaron análisis descriptivos y de asociación en función de la naturaleza de las variables. Los resultados de los …
Continuous models combining slacks-based measures of efficiency and super-efficiency
2022
AbstractIn the framework of data envelopment analysis (DEA), Tone (Eur J Oper Res 130(3):498–509, 2001) introduced the slacks-based measure (SBM) of efficiency, which is a nonradial model that incorporates all the slacks of the evaluated decision-making units (DMUs) into their efficiency scores, unlike classical radial efficiency models. Next, Tone (Eur J Oper Res 143(1):32–41, 2002) developed the SBM super-efficiency model in order to differentiate and rank efficient DMUs, whose SBM efficiency scores are always 1. However, as pointed out by Chen (Eur J Oper Res 226(2):258–267, 2013), some interpretation problems arise when the so-called super-efficiency projections are weakly efficient, le…
Towards Dynamic Ontology - Integrating Tools of Evolution and Versionning in Ontology
2010
6; International audience; Since Gruber's definition, a lot of works focused on evolution or versioning issues. Not much attention has been paid to integrated solutions which resolve both these two purposes. In this paper we present a new semantic architecture that combines versioning tools with the evolution process. This architecture called VersionGraph is integrated in the source ontology since its creation in order to make it possible to evolve and to be versioned.
International activities of knowledge-intensive small- and medium-sized enterprises: The example of an open source software firm
2009
Purpose: The purpose of this paper is to develop a framework that explains international activities of open source software (OSS) firms. Design/methodology/approach: This paper reviews relevant literature related to international operations of knowledge-intensive firms, especially in the software industry. Theoretical development is based here on a combination of the network approach, international new venture theory and inward–outward internationalization. Findings: The findings in this study suggest that the international activities of OSS firms can be divided into project activities and business activities. Project activities include inward and outward linkages, and partner identificatio…
Great expectations: Learning the boundaries of design rights
2019
We present a case study of an increase in design right filings and concurrent design right litigations in an industry that previously had little experience of design right protection. The motives for and outcomes of filing, and how these changed over time are discussed. We go on to explore the events, which offered the decision makers opportunities to update their beliefs about the scope of design right protection. We find that filing motives changed from specific protection goals to freedom to operate over time. We also find that the actors faced several, but sometimes contradictory, learning opportunities. There are two types of learning relating to the usage of design rights: 1) learning…
Surrogate-assisted multicriteria optimization: Complexities, prospective solutions, and business case
2017
Complexity in solving real-world multicriteria optimization problems often stems from the fact that complex, expensive, and/or time-consuming simulation tools or physical experiments are used to evaluate solutions to a problem. In such settings, it is common to use efficient computational models, often known as surrogates or metamodels, to approximate the outcome (objective or constraint function value) of a simulation or physical experiment. The presence of multiple objective functions poses an additional layer of complexity for surrogate-assisted optimization. For example, complexities may relate to the appropriate selection of metamodels for the individual objective functions, extensive …
Opaque Distribution Channels for Competing Service Providers: Posted Price vs. Name-Your-Own-Price Mechanisms
2014
Opaque selling has been widely adopted by service providers in the travel industry to sell off leftover capacity under stochastic demand. We consider a two-stage model to study the impact of different selling mechanisms, posted price (PP) versus name-your-own-price (NYOP), of an opaque reseller on competing service providers who face forward-looking customers. We find that in this environment, providers prefer that the opaque reseller uses a posted price instead of a bidding model. This is because the ability to set retail prices is critical for extracting surplus from customers who wait to purchase from the reseller. Such surplus extraction enables providers to set high prices for advance…
4 - 6 gadus vecu bērnu izziņas aktivitātes veicināšana praktiskā darbībā
2017
Bakalaura darba autore: Daila Liekne - Siliņa Zinātniskā darba vadītāja: profesore, dr. paed. Elita Volāne Bakalaura darba temats: „4 – 6 gadus vecu bērnu izziņas aktivitātes veicināšana praktiskā darbībā” Darbā ir izmantota pedagoģisko un psiholoģisko avotu analīze, bērnu vērošana, datu piefiksēšana un to analīze. Bakalaura darba mērķis: pētīt vidējā pirmsskolas vecuma bērnu izziņas aktivitātes sekmēšanas iespējas praktiskā darbībā. Hipotēze: pirmsskolas vecumposma bērnu izziņas aktivitāte izpaužas aktīvāk, ja pedagogs piedāvā praktiskos darbus: 1.Atbilstoši bērnu spējām, vecumposma attīstības īpatnībām, kurus risinot, tiek respektēts bērna viedoklis, redzējums par savu darbu; 2.No dažādie…
Operations management GADE practice exercise nº 6. Process analysis and improvement
2019
El document forma part dels materials docents programats mitjançant l'ajut del Servei de Política Lingüística de la Universitat de València.: Ejercicio sobre gestión de procesos en operaciones Exercice on process management in operations
Economic Sustainability of Italian Greenhouse Cherry Tomato
2014
Greenhouse tomato cultivation plays an important role in Sicily, being the primary production area in Italy, due to its favorable pedo-climatic conditions that permit extra-seasonal productions. In Sicily, more than half of greenhouse tomato production is derived from the Province of Ragusa on the southeastern coast, where especially cherry tomato typologies are cultivated. Over the last decade, the Ragusa Province has registered a decrease both in terms of greenhouse tomato area and harvested production due to several structural problems that would require restructuring of the tomato supply chain. Thus, since recognition of real costs and profitability of tomato growing is a vital issue, b…