Purpose -Although student mobility worldwide is increasing dramatically, systematic analysis of the effects and variables associated with its results is still recent, especially in new destinations. The purpose of this paper is to examine student mobility in southern Chile from a case study perspective. An exploratory study is presented to analyze the experiences of students in an exchange program over a five-year period and the academic performance of local students abroad. Design/methodology/approach -A single-case design with two embedded units of analysis is presented. Data were drawn from semi-structured surveys and students' grade records. Content analysis was applied to the students' reports and statistical methods were used to verify the influence of certain variables. Findings -The experience of Chilean students abroad centered on building up personal competences, while visiting international students concentrated on intercultural interaction, influenced mainly by the quality of accommodation and language factors, the latter determining their relations with professors and local students. Academic performance of local students abroad was determined by the type of academic activity undertaken, course validation, and the selected destination. Practical implications -Some patterns recorded in international literature are similar to the results of this particular case. However, this study reveals some unique findings that can be associated to the operation of study abroad programs in emerging countries, especially in young regional universities unprecedented in aspects related to student mobility. Originality/value -The lack of scientific studies on student mobility in Chile, a country which international student population is rapidly growing, concedes great value to this exploratory study.

En años recientes la importancia del control de alimentos, en cuanto a la identificación de sus componentes para evitar fraudes, ha crecido tanto en interés en las organizaciones estatales como en las empresas y en las industrias. La globalización, el aumento de las importaciones y exportaciones, y los tratados de libre comercio han propiciado un mayor intercambio y acceso de los alimentos a nivel mundial; junto con ello los problemas asociados a los fraudes tales como la adulteración, sustitución, la intencionalidad, y falsificación se han incrementado. Por ello, se han reportado varios trabajos asociados al fraude alimentario, donde en la mayoría de ellas se muestran aplicaciones de nuevas técnicas de identificación. Sin embargo, una discusión acerca de los tipos de fraude y su impacto sobre la sociedad, el bioterrorismo y la religión, ha sido poco abordada. Esta revisión se enfoca básicamente en describir los tipos de fraude en alimentos más comunes. Así como, se mencionan las recientes técnicas disponibles para detectar una adulteración en carnes.

Objectives. To develop a model for detecting cases of organized fraud in Chile based on data from the legal forms for medically authorized leave (formulario legal de licencia médica curativa-MAL) and to establish the relevance of this data to fraud detection. Methods.A binomial logistic regression model was employed using four variables from the MAL form, a national requirement for illness-related work absences: the number of legal absences taken by a single person, the number of days authorized by the prescribing doctor, the total cost per illness, and a dichotic variable reflecting whether or not the diagnosis is one that can be proven. The analysis involved 4 079 MAL forms that had been submitted in 2003 to a private health provider and of which 356 were already identified as fraudulent by a panel of medical fraud experts. Results. The model successfully identified 99.71% of the fraudulent medical authorizations and 99.86% of the non-fraudulent, according to the criteria of the panel of fraud experts. Three of the variables employed had statistically-significant independent predictive power. The positive predictive value of the proposed model was 98.59%, while its negative predictive value was 99.97%. Conclusions. The binomial logistic model that was developed uses four variables that are common to all MAL forms in use by Chile's public as well as private insurers, permitting separation of fraudulent from non-fraudulent requests to be more accurate, more timely, and at a cost lower that of an expert panel.Fraud; insurance, health; decision support techniques, Chile. ABSTRACTFraud in the health systems of Chile: a detection model

El desarrollo de la actividad turística en las décadas recientes ha dado lugar a una amplia gama de formas de turismo. El turismo rural constituye un ejemplo de esta tendencia, el cual se distingue por un contacto respetuoso con el entorno natural y una interrelación con la población local. Esta forma de turismo surge en un contexto de diversificación productiva, la cual da lugar a la innovación y a la integración de actividades; así como también surge ante una revalorización de lo rural. Esta actividad tiene sus orígenes en Europa, siendo Francia y España los países en donde presenta un mayor nivel de desarrollo. En estos países, sobresale el incentivo al emprendimiento por medio de ayudas económicas destinadas tanto a los residentes rurales como a los municipios; además de propiciarse la asocaitividad. En los países americanos, el turismo rural es aún una novedad, destacándose que sólo Argentina, Chile y México cuentan con políticas claras esta área; en este sentido, sobresale la creación de circuitos agroturísticos en torno a un producto clave. En Chile, sobresale el emprendimiento por parte de pequeños productores y la creación de redes de turismo rural.