Security in online learning assessment towards an effective trustworthiness approach to support e-learning teams

(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.This paper proposes a trustworthiness model for the design of secure learning assessment in on-line collaborative learning groups. Although computer supported collaborative learning has been widely adopted in many educational institutions over the last decade, there exist still drawbacks which limit their potential in collaborative learning activities. Among these limitations, we investigate information security requirements in on-line assessment, (e-assessment), which can be developed in collaborative learning contexts. Despite information security enhancements have been developed in recent years, to the best of our knowledge, integrated and holistic security models have not been completely carried out yet. Even when security advanced methodologies and technologies are deployed in Learning Management Systems, too many types of vulnerabilities still remain opened and unsolved. Therefore, new models such as trustworthiness approaches can overcome these lacks and support e-assessment requirements for e-Learning. To this end, a trustworthiness model is designed in order to conduct the guidelines of a holistic security model for on-line collaborative learning through effective trustworthiness approaches. In addition, since users' trustworthiness analysis involves large amounts of ill-structured data, a parallel processing paradigm is proposed to build relevant information modeling trustworthiness levels for e-Learning.Peer ReviewedPostprint (author's final draft

La aplicación de las nuevas tecnologías en la educación

La presencia de las nuevas tecnologías en todos los ámbitos de nuestra sociedad hace inevitable su uso en entornos educativos y, por tanto, exige una profunda reflexión en busca de sus mejores potencialidades educativas y su adaptación a la actividad educativa cotidiana. La introducción del ordenador como proyecto de innovación en un centro educativo conlleva modificaciones en las diferentes estructuras, en la organización de los medios, en la formación del profesorado, en su colaboración en proyectos comunes, etc. Estos cambios suponen una serie de implicaciones que inciden también en el propio alumnado: nuevos medios, nuevas metodologías, nuevas relaciones con el profesorado

Prospects for transient gravitational waves at r-mode frequencies associated with pulsar glitches

t Glitches in pulsars are likely to trigger oscillation modes in the fluid interior of neutron stars. We examined these oscillations specifically at r-mode frequencies. The excited r-modes will emit gravitational waves and can have long damping time scales (minutes - days). We use simple estimates of how much energy the glitch might put into the r-mode and assess the detectability of the emitted gravitational waves with future interferometers

A collective intelligence approach for building student's trustworthiness profile in online learning

(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.Information and communication technologies have been widely adopted in most of educational institutions to support e-Learning through different learning methodologies such as computer supported collaborative learning, which has become one of the most influencing learning paradigms. In this context, e-Learning stakeholders, are increasingly demanding new requirements, among them, information security is considered as a critical factor involved in on-line collaborative processes. Information security determines the accurate development of learning activities, especially when a group of students carries out on-line assessment, which conducts to grades or certificates, in these cases, IS is an essential issue that has to be considered. To date, even most advances security technological solutions have drawbacks that impede the development of overall security e-Learning frameworks. For this reason, this paper suggests enhancing technological security models with functional approaches, namely, we propose a functional security model based on trustworthiness and collective intelligence. Both of these topics are closely related to on-line collaborative learning and on-line assessment models. Therefore, the main goal of this paper is to discover how security can be enhanced with trustworthiness in an on-line collaborative learning scenario through the study of the collective intelligence processes that occur on on-line assessment activities. To this end, a peer-to-peer public student's profile model, based on trustworthiness is proposed, and the main collective intelligence processes involved in the collaborative on-line assessments activities, are presented.Peer ReviewedPostprint (author's final draft

Sex and weight category differences in the temporal combat structure of judokas with visual impairment

The study of the temporal judo combat structure of athletes with visual impairment (VI) needs further research. The objectives of the study were to determine the temporal structure of combat of judo in men and women with VI and establish differences between sexes, within their respective weight categories and between the different minutes of combat. The sample was formed by all the judokas with VI who participated in the 2018 IBSA Judo World Championship (172 men and 95 women). Through observational methodology, we analysed all the combats (n = 365). In order to obtain the results, we used different analytical techniques: descriptive, one-way ANOVA, t-test to show independents, chi-square, effect size and T-Patterns analysis. The level of significance was ρ ≤ .05. The results define a temporal structure by sex and by weight category that allows the judo professionals to plan precise and adequate trainings for the athletes. We conclude that there are differences in the temporal structure of judo combat within the men and women with VI, within their respective weight categories and within the different minutes of combat. The temporal structure of combat has changed more markedly in women and unevenly in the different weight categories for both sexes

Temporary judo combat structure of women with visual impairment

The study of the temporary judo combat structure presents various problems. The judokas (B1-B2-B3) do not compete with equal fighting conditions. The objectives of the study are to determine the temporary structure of judo combat in women with visual impairment, test if the changes in rules have modified the temporality of combat, and establish if there are differences between the visual categories. Of the judokas with visual impairment that competed in the 2018 IBSA Judo World Championship (94 women), all of them participated. By means of observational methodology, we analysed all of the combats (n = 133). In order to obtain the results, we used different analysis techniques: descriptive, one-way ANOVA, t-test to show independents, effect size and detection of t-patterns. The level of significance established for the study was ρ ≤ 0.05. The results determined a temporary structure for each weight category. With these, the judo professionals will be able to develop precise and suitable trainings for these athletes. We conclude that the combat temporality has changed. There are differences among visual categories, the B1 judokas win only a few combats and their combats are shorter. We consider it necessary to equalise the competition conditions

Algunas plantas de interés corológico de la Alcarria conquense (Cuenca, España)

Presentamos 13 taxones nuevos o poco conocidos de la flora vascular de Cuenca, que han sido recolectados fundamentalmente sobre suelos yesíferos. De ellos, 6 constituyen primeras citas provinciales y 7 son segundas citas. Se señala como novedad para CuencPrieto Álvaro, M. & Pajarón, S. 2004. Some plants with chorological interest from the Alcarria region of Cuenca province (Spain). Bot. Complut. 28: 71-73. We present 13 taxa of vascular plants collected on gypsaceous soils in Cuenca province, Spain. Among them, 6 are first provincial records and 7 of them are second provincial records. We comment also about the presence in Cuenca of forms of Cerastium pumilum Curtis with sepaloid bracts. The sheets that testified this records are kept in the herbarium MACB (Facultad de Ciencias Biológicas, Universidad Complutense, Madrid)

Relaciones fiscales intergubernamentales en el sistema español de financiación de las comunidades autónomas

El sistema de financiación de las Comunidades Autónomas de régimen común que entró en vigor en el año 2002, ha significado un incremento importante de las competencias en materia tributaria (coparticipación de impuestos) de que disponen las mismas, estableciendo asimismo un nuevo sistema de transferencias intergubernamentales que tiene como objetivo asegurar la suficiencia financiera de las regiones. Este nuevo modelo se implanta en el momento en que todas las Comunidades Autónomas han alcanzado su techo competencial, asumiendo las competencias previstas en la Constitución Española de 1978, circunstancia que hace posible que se diseñe un sistema estable e integrado de financiación. Conocidos ya los primeros resultados del funcionamiento del sistema, al disponer de las liquidaciones correspondientes a los ejercicios 2002 y 2003, en este trabajo se analizan los avances conseguidos en términos de suficiencia financiera y de nivelación inter-territorial, y se ofrecen algunas conclusiones relevantes respecto a las principales cuestiones que aún quedan por resolver. The new financing system of the Common Autonomous Communities (2002) has meant an important rise of their tax powers (tax copartnership). Also, a new system of intergovernmental grants has been applied with the objective to assure the financial sufficiency of the Spanish Autonomous Communities. This new model is implanted when all the Autonomous Communities have reached their highest powers, according to the Spanish Constitution (1978), and a stable and integrated financing system was designed. Already known the first results of the model (2002 and 2003), in this paper the advances in financial sufficiency and equalization are analyzed, and we offer some conclusions regarding the main unfinished questions.Fiscal federalism, Intergovernmental grants, Autonomous Communities Financing, Sufficiency, Equalization, Federalismo Fiscal, Transferencias intergubernamentales, Financiación autonómica, Suficiencia, Nivelación

Incidencia de la reforma del IRPF sobre la oferta laboral y el bienestar de la familia española

En este trabajo se analizan los efectos de la Reforma del Impuesto sobre la renta efectuada en España en 1999 sobre la oferta de trabajo de las unidades familiares. En primer lugar se presenta el marco fiscal de las familias antes de la reforma del IRPF de 1999 y la situación impositiva de los hogares españoles después de dicha reforma. En segundo lugar, partiendo de la estimación de una ecuación de oferta laboral de los matrimonios, en la que se tienen en cuenta los efectos cruzados de los salarios y los diferentes tipos de renta de ambos cónyuges, se estudian los efectos de la Reforma sobre el bienestar por medio del cálculo de la variación equivalente asociada a la misma. Estas estimaciones se han realizado a partir de los datos del PHOGUE 94. Los resultados permiten inferir unas ganancias de bienestar ligeramente superiores para las mujeres que para los hombres, con independencia de la situación laboral de ambos. Analizando las ganancias de bienestar por hogares, las mayores ganancias se detectan en los de rentas medias y medias altas y, para cada uno de estos grupos de renta, son mayores a medida que aumenta el número de hijos. Classification-JEL : H24, H31, J22.Impuesto sobre la renta, oferta de trabajo, variación equivalente.

Curuguaty, 15 de junio del 2012: entre el largo proceso de la historia paraguaya y la inmediatez de los disparos

El objetivo que orienta este trabajo es poner en consideración la singularidad de los hechos ocurridos en torno a la masacre de Curuguaty (Paraguay) en junio de 2012, con el propósito de recontextualizar la disputa por el acceso a la tierra durante el ciclo progresista del período 2000-2016, en clave de una perspectiva de la región latinoamericana (Svampa, 2017). Consideramos pertinente realizar esta tarea valorando los aportes de Villar (2017) respecto del nuevo ciclo de acumulación capitalista en tanto referencia explicativa de los cambios políticos institucionales, así como también podemos cimentar este recorrido de luchas sociales a partir de la reconstrucción propuesta por Alderete (2015) de las organizaciones populares y campesinas de Paraguay con presencia cada vez mayor desde el retorno democrático hacia fines del siglo XX. De esta manera nos interesa dar cuenta de las perspectivas sociales que chocan en torno a un conflicto directo de disputa por la tierra entre el sector campesino, por un lado, y los sectores vinculados al agronegocio. Pretendemos delinear en este trabajo qué visiones entran en juego y recorren aquellas jornadas de violencia que devino en 17 muertes, y la destitución de Fernando Lugo de la presidencia de la República de Paraguay. Para ello, utilizaremos como fuente de estudio el Informe sobre derechos humanos en el caso Marina Kue, elaborado en 2012 por la Coordinadora de Derechos Humanos del Paraguay (CODEHUPY), y el Libelo acusatorio aprobado por el Congreso paraguayo para destituir a Lugo (Carbone y Soler, 2012).Facultad de Humanidades y Ciencias de la Educación (FAHCE