A linear optimization based method for data privacy in statistical tabular data

National Statistical Agencies routinely disseminate large amounts of data. Prior to dissemination these data have to be protected to avoid releasing confidential information. Controlled tabular adjustment (CTA) is one of the available methods for this purpose. CTA formulates an optimization problem that looks for the safe table which is closest to the original one. The standard CTA approach results in a mixed integer linear optimization (MILO) problem, which is very challenging for current technology. In this work we present a much less costly variant of CTA that formulates a multiobjective linear optimization (LO) problem, where binary variables are pre-fixed, and the resulting continuous problem is solved by lexicographic optimization. Extensive computational results are reported using both commercial (CPLEX and XPRESS) and open source (Clp) solvers, with either simplex or interior-point methods, on a set of real instances. Most instances were successfully solved with the LO-CTA variant in less than one hour, while many of them are computationally very expensive with the MILO-CTA formulation. The interior-point method outperformed simplex in this particular application.Peer ReviewedPreprin

The Smallpox Vaccine in Latin America: A New Approach (1801–1804)

The Royal Philanthropic Vaccine Expedition is considered in the history of medicine as the first international health expedition aimed at the global elimination of a contagious disease: smallpox. However, the initiatives carried out in this way before the arrival of the Balmis Expedition, by surgeons from the Spanish Navy, are less well known. Thus, the main objective of this research work is to offer an overview of the different anti-variolic vaccination initiatives prior to the campaign financed by the Spanish crown from these health facilities. Using the heuristic and hermeneutic method, our article is based on primary sources contrasted with specialised literature. The results obtained are presented in a narrative style from each of the surgeons identified as decisive in the implementation of the vaccine, thus providing a divergent and unpublished historiographic approach. As the facts described show, before the arrival of Balmis the vaccine substance was introduced in those countries thanks to the initiative of various surgeons: in Puerto Rico by Francisco Oller; in Cartagena and Santa Marta in Colombia by Ángel Hidalgo; in Venezuela by Alonso Ruiz; in Cuba by Tomás Romay and Bernardo de Cózar; in the Viceroyalty of New Granada (Colombia) by Lorenzo Vergés; in Guatemala by Miguel José Monzón and José María Ledesma; in the Viceroyalty of New Spain by Alejandro García Arboleya and Antonio Serrano; in Peru by Pedro Belomo; in Río de la Plata by Cristóbal Martín de Montúfar; in the Chilean region of Coquimbo by José María Gómez; and in the Philippines by Cristóbal Regidor. Finally, it should be noted that these surgeons and the approach presented are part of a historiography based on the personal actions of professionals trained, for the most part, at the Medical–Surgical School of Cadiz

Multi-Party Coordination in the Context of MOWS

Separation of concerns has been presented as a promising tool to tackle the design of complex systems in which cross-cutting properties that do not fit into the scope of a class must be satisfied. In this paper, we show that interactions amongst a number of objects can also be described separately from functionality, which enhances reusability of functional code and interaction patterns. We present our proposal in the context of Multi-Qrganisational Web-Based Systems (MOWS) and also present a framework that provides the infrastructure needed to implement multiparty coordination as an independent aspect

Evaluación neuropsicológica infantil: teoría y práctica

A lo largo de la conferencia se describirán estos hitos atendiendo a varias pruebas desarrolladas en nuestro país.La evaluación de las funciones ejecutivas es un área de creciente interés dentro de la Psicología. La capacidad de organizar y planificar una tarea, seleccionar objetos de manera apropiada, iniciar un plan y mantenerlo mientras se ejecuta, inhibir las distracciones, etc., son habilidades propias de este constructo, y su medición resulta especialmente interesante en numerosos trastornos psiconeurológicos, así como en los contextos educativos y laborales. En los últimos diez años el ámbito dedicado al desarrollo de pruebas neuropsicológicas para la evaluación de problemas de atención y regulación de la conducta en la edad infantil ha vivido un importante desarrollo.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

THE SOCIAL RESPONSIBILITY AS A MODEL OF TOURIST BUSINESS AND FACILITATING INSTRUMENTS FOR ITS IMPLANTATION AT THE SPANISH HOTEL SECTOR

The present research aims at the identification of the degree of consideration and development of the CSR by the tourist sector and the linked administrations. The fact-finding methodology is based on the analysis of data originating from different sources with a qualitative focus, identifying and gathering the necessary information for the revision of literature, the existing tourism policies and the CSR at an international, European and Spanish level, as well as on the generic and specific available instruments of the hotel sector that organizations and companies have for the introduction and development of CSR

Un urbis encomium a lo vulgar: el caso de los dictados tópicos

Analysis of popular topics taught in the light of the topics learned poetry, revolving around the urbis encomium, understanding the popular verses somehow respond to a similar structure to that established for the praise of copyright poetry. The popular songs are close to the issue which are specific to them, collected by imitation or by spontaneous coincidence and adopt many of the tools of author's lyric poetry. Within this framework, we go deeply into analogies we found when studying the group of songs we label " songs to the earth" with the topics of classical rhetoric making up the urbis encomium, the praise for the city