A theory of reference-dependent behavior

Extensive field and experimental evidence in a variety of environments show that behavior depends on a reference point. This paper provides an axiomatic characterization of this dependence. We proceed by imposing gradually more structure on both choice correspondences and preference relations, requiring increasingly higher levels of rationality, and freeing the decision-maker from certain types of inconsistencies. The appropriate degree of behavioral structure will depend on the phenomenon that is to be modeled. Lastly, we provide two applications of our work: one to model the status-quo bias, and another to model addictive behavior.

How to introduce connectance in a frame of an expression for diversity

Systems made of parts that are totally connected do not work, neither ecosys- tems nor artifacts. Relative connectance is inversely related to diversity, and both magnitudes can find a common frame of expression, in which some constant expressing the constraints of any organization might be embodied. If S is Simp- son's index, the expression (1 - S)IS as a measure of diversity offers some advantages or, at least, helps further reasoning. Such expression is the ratio between total interspecific possible interactions and possible intraspecific inter- actions.

Avaluació de l'experiència pilot dels tallers d'estudi assistit de la UVic dins dels plans educatius d'entorn de Manlleu, Roda de Ter i Vic (curs 2006-2007)

Aquest treball de recerca ha consistit en realitzar el seguiment dels Tallers d'Estudi Assistit (TEA) de diferents poblacions de la comarca d'Osona, per tal de conèixer-los i avaluar-los. Els TEA consisteixen en una activitat extraescolar d'acompanyament en l'etapa educativa d'alumnes de cicle mitjà, cicle superior i secundària que no disposen d'un entorn favorabale per fer una correcte escolarització. La recerca estudia dues dimensions: per una banda analitzar com la Uvic assumeix la responsabilitat de la formació i seguiment dels estudiants que participen com a monitors en els TEA, i per l'altra, contextualitzar els Tallers d'Estudi Assistit com una eina dels Plans Educatius d'Entorn, per la igualtat d'oportunitats; així com valorar el treball en xarxa que els tallers representen. Amb l'objectiu d'avaluar el funcionament dels TEA, la formació dels monitors (estudiants de la UVic) i la implicació dels agents implicats en el projecte; així com també plantejar propostes de millora per a properes edicions dels TEA.

Criteris per la determinació de l'àmbit de la competència de Catalunya en Dret de les obligacions contractuals

Cal examinar dins dels marcs europeu, estatal i autonòmic l'actual distribució de competències en matèria d'obligacions contractuals, decidint el marge que li queda al legislador català en aquesta matèria en el moment en què s'està elaborant el llibre VI del Codi civil de Catalunya.

Acting Rehearsal in Collaborative Multimodal Mixed Reality Environments

This paper presents the use of our multimodal mixed reality telecommunication system to support remote acting rehearsal. The rehearsals involved two actors, located in London and Barcelona, and a director in another location in London. This triadic audiovisual telecommunication was performed in a spatial and multimodal collaborative mixed reality environment based on the 'destination-visitor' paradigm, which we define and put into use. We detail our heterogeneous system architecture, which spans the three distributed and technologically asymmetric sites, and features a range of capture, display, and transmission technologies. The actors' and director's experience of rehearsing a scene via the system are then discussed, exploring successes and failures of this heterogeneous form of telecollaboration. Overall, the common spatial frame of reference presented by the system to all parties was highly conducive to theatrical acting and directing, allowing blocking, gross gesture, and unambiguous instruction to be issued. The relative inexpressivity of the actors' embodiments was identified as the central limitation of the telecommunication, meaning that moments relying on performing and reacting to consequential facial expression and subtle gesture were less successful.

Acting rehearsal in collaborative multimodal mixed reality environments

This paper presents the use of our multimodal mixed reality telecommunication system to support remote acting rehearsal. The rehearsals involved two actors, located in London and Barcelona, and a director in another location in London. This triadic audiovisual telecommunication was performed in a spatial and multimodal collaborative mixed reality environment based on the 'destination-visitor' paradigm, which we define and put into use. We detail our heterogeneous system architecture, which spans the three distributed and technologically asymmetric sites, and features a range of capture, display, and transmission technologies. The actors' and director's experience of rehearsing a scene via the system are then discussed, exploring successes and failures of this heterogeneous form of telecollaboration. Overall, the common spatial frame of reference presented by the system to all parties was highly conducive to theatrical acting and directing, allowing blocking, gross gesture, and unambiguous instruction to be issued. The relative inexpressivity of the actors' embodiments was identified as the central limitation of the telecommunication, meaning that moments relying on performing and reacting to consequential facial expression and subtle gesture were less successful.

Cuestiones sobre el contrato de servicios diseñado en el Marco Común de Referencia

La reciente publicación del draft del Common Frame of Reference invita a reflexionar sobre la figura del contrato de servicios, tal como ha sido desarrollada por el Study Group on a European Civil Code, y respecto de la que encontramos verdaderas innovaciones en comparación con la teoría tradicional que aún mantienen nuestra doctrina y jurisprudencia. El objeto del trabajo es exponer algunas de las soluciones que propone el derecho contractual europeo, e incidir en la posibilidad y conveniencia de su aplicación en nuestro país, con vistas a la oportuna elaboración de la tan esperada regulación civil sobre el contrato de servicios.

El contrato de servicios y la propuesta de modernización del Código civil español

La Propuesta para la Modernización del Derecho de Obligaciones y Contratos, hecha pública por la Sección Primera, de Derecho Civil, de la Comisión General de Codificación española en 2009, introduce una nueva concepción del contrato civil, de manera especial incorpora el nuevo concepto de cumplimiento contractual que se defiende en los textos legales europeos sobre la compraventa y en el borrador del Commnon Frame of Reference, así como en la normativa europea sobre los Derechos de los consumidores. En este artículo se da cuenta de tales avances en cuanto pueden referirse, no solo al contrato de compraventa, regulado ex novo en la Propuesta, sino también al contrato de servicios. Se propone centrar la mirada también en este contrato y acometer su regulación.

Prescription in the proposal for a common european sales law

The rules on prescription in Part VIII, Chapter 18, of the Proposal for a Common European Sales Law (CESL) follow the provisions of the Principles of European Contract Law (PECL) and the Draft Common Frame of Reference (DCFR), which, in general, have deserved favourable comments. Yet, a number of rules contained in those texts have been omitted. It is necessary to ascertain whether the CESL rules only apply to provisions on rights and claims resulting from sales or related services contracts, or whether they are also applicable to any other contractual right or claim and also to rights or claims of non-contractual origin. One of the most problematic issues concerns general prescription periods: firstly, because there are two general periods, a short one and a long one, without any specification about the claims or rights covered by each one of them; secondly, because neither period is suitable in case of non-conformity. There are also some interpretation problems due to missing, ambiguous or defective definitions. The systematic approach demands clarification too.

Proposta d’un text articulat sobre teoria general del contracte per al Llibre sisè del Codi Civil de Catalunya

El treball que es presenta conté un text articulat sobre la part de teoria general del contracte (arts. 612-1 i següents) del llibre sisè del Codi Civil de Catalunya. El procés de codificació civil que es viu a Catalunya justifica aquest treball, que podria ser útil per a elaboració del llibre sisè del CCCat dedicat a les obligacions i els contractes. El treball consta d’una proposta de text articulat, amb el seus respectius comentaris a cada article. Es tracta del capítol segon del títol primer del llibre sisè, i es divideix en les següents seccions: 1) El contracte, els seus elements essencials, i la seva eficàcia; 2) La formació del contracte; 3) La interpretació del contracte; i 4) La ineficàcia del contracte, que inclou l’anàlisi dels vicis del consentiment. El treball ha pres com a referència les principals propostes d’harmonització del dret contractual (Principis Unidroit [PICC], Principis de Dret Contractual Europeu [PECL], Marc Comú de Referència [DCFR], i l’Instrument Opcional sobre Compravenda Europea [CESL] i la regulació dels codis més moderns (entre ells, el del Quebec, l’Holandès, el Portuguès o l’Italià) i les seves propostes de reforma (el projecte Terrè a França, i la Propuesta de Modificación del Código Civil Español en materia de obligaciones y contratos). En la proposta presentada s’incorporen institucions no regulades en el Codi civil espanyol actualment vigent a Catalunya en la seva condició de dret supletori, i s’omplen algunes llacunes d’aquest cos legal. Es poden citar, entre elles, les clàusules abusives dels contractes, el canvi en les circumstàncies essencials del contracte, el contracte per a persona per designar, la responsabilitat per culpa in contrahendo, les cartes d’intencions, el règim de l’oferta i l’acceptació del contracte, els contractes preparatoris, els drets de preferència, la possibilitat d’anul·lació del contracte per concessió d’un avantatge injust a alguna de les parts, i el règim dels contractes en frau de creditors.

Reconstruction of the join time-delay Doppler-scale reflectivity density in the wide-band regime. A frame theory based approach

The inverse scattering problem concerning the determination of the joint time-delayDoppler-scale reflectivity density characterizing continuous target environments is addressed by recourse to the generalized frame theory. A reconstruction formula,involving the echoes of a frame of outgoing signals and its corresponding reciprocalframe, is developed. A ‘‘realistic’’ situation with respect to the transmission ofa finite number of signals is further considered. In such a case, our reconstruction formula is shown to yield the orthogonal projection of the reflectivity density onto a subspace generated by the transmitted signals.

Chemical and mineralogical alteration of ceramics from a Late Bronze Age kiln at Kommos, Crete: the effect on the formation of a reference group

The formation of reference groups comprises an important procedure in chemical provenance studies of archaeological pottery. Material from ancient kilns is thought to be especially suitable for reference groups, as it comprises a definite unit of past production. Pottery from the Late Minoan IA kiln excavated at Kommos, Crete was analysed in order to produce a reference group in this important area of Minoan ceramic production. The samples were characterized by a combination of techniques providing information on the chemistry, mineralogy and microstructure of the ceramic body. Initially, the study was unable to establish, in a straightforward manner, a chemical reference group. Different ceramic pastes and a range of selective alterations and contaminations, affected by variable firing temperatures and burial environment, were shown to be responsible for the compositional variability. Procedures are described to compensate for such alterations and the perturbations in the data that they produce.

The Phenomenon of international new ventures, global start-ups, and born-globals: what do we know after a decade (1993-2002) of exhaustive scientific inquiry?

In this paper, 27 studies from the last decade which deal more or less explicitly with the International New Venture, global start-up or born-global phenomenon are first identified, and then fully examined and critically assessed as a basis for obtaining an adequate view of the state-of-the-art of this increasingly important research avenue in the field of International Entrepreneurship (IE). The methodology used for this synthetic review allow us to analyze a number of recent, purposefully-chosen studies that are systematically compared along the following criteria: 1) main objective and type of research; 2) theoretical framework/s of reference, 3) methodological issues, and 4) main findings and/or conclusions. As a result of this literature review, a critical assessment follows in which the most relevant benefits and contributions as well as potential drawbacks, limitations or major discrepancies in the research activities conducted so far are discussed. Finally, some suggestions and implications are provided in the form of future research directions.