An obscured cluster associated with the H���II region RCW173

Context. The discovery of several clusters of red supergiants towards l = 24�����30�� has triggered interest in this area of the Galactic plane, where lines of sight are very complex and previous explorations of the stellar content were very preliminary. Aims. We attempt to characterise the stellar population associated with the H���ii region RCW 173 (=Sh2-60), located at, as previous studies have suggested that this population could be beyond the Sagittarius arm. Methods. We obtained UBV photometry of a stellar field to the south of the brightest part of RCW 173, as well as spectroscopy of about twenty stars in the area. We combined our new data with archival 2MASS near-infrared photometry and Spitzer/GLIMPSE imaging and photometry, to achieve a more accurate characterisation of the stellar sources and the associated cloud. Results. We find a significant population of early-type stars located at d = 3.0 kpc, in good agreement with the ���near��� dynamical distance to the H���ii region. This population should be located at the near intersection of the Scutum-Crux arm. A luminous O7���II star is likely to be the main source of ionisation. Many stars are concentrated around the bright nebulosity, where GLIMPSE images in the mid infrared show the presence of a bubble of excited material surrounding a cavity that coincides spatially with a number of B0-1���V stars. We interpret this as an emerging cluster, perhaps triggered by the nearby O7���II star. We also find a number of B-type giants. Some of them are located at approximately the same distance, and may be part of an older population in the same area, characterised by much lower reddening. A few have shorter distance moduli and are likely to be located in the Sagittarius arm. Conclusions. The line of sight in this direction is very complex. Optically visible tracers delineate two spiral arms, but seem to be absent beyond d ��� 3 kpc. Several H���ii regions in this area suggest that the Scutum-Crux arm contains thick clouds actively forming stars. All these populations are projected on top of the major stellar complex signposted by the clusters of red supergiants.

An explanatory model of academic achievement based on aptitudes, goal orientations, self-concept and learning strategies

As a result of studies examining factors involved in the learning process, various structural models have been developed to explain the direct and indirect effects that occur between the variables in these models. The objective was to evaluate a structural model of cognitive and motivational variables predicting academic achievement, including general intelligence, academic self-concept, goal orientations, effort and learning strategies. The sample comprised of 341 Spanish students in the first year of compulsory secondary education. Different tests and questionnaires were used to evaluate each variable, and Structural Equation Modelling (SEM) was applied to contrast the relationships of the initial model. The model proposed had a satisfactory fit, and all the hypothesised relationships were significant. General intelligence was the variable most able to explain academic achievement. Also important was the direct influence of academic self-concept on achievement, goal orientations and effort, as well as the mediating ability of effort and learning strategies between academic goals and final achievement.

Evaluaci��n de necesidades y expectativas ante la construcci��n de un espacio interactivo de comunicaci��n, informaci��n y aprendizaje hist��rico-educativo

Conscientes de las posibilidades pedag��gicas, participativas y de colaboraci��n cient��fica de la Web 2.0, los autores del presente art��culo se plantean la detecci��n de las necesidades y expectativas hacia la creaci��n de una plataforma virtual delimitada por un espacio interactivo o red social para la Historia de la Educaci��n y el Patrimonio Hist��rico-educativo. Gracias a la evaluaci��n mediante un cuestionario en el que han participado un grupo de expertos docentes e investigadores de Historia de la Educaci��n, se han obtenido una serie de conclusiones a tener en cuenta respecto a determinados aspectos (conocimiento y uso, expectativas, componentes, etc.) que orientar��n la construcci��n ad hoc de dicha plataforma. Es relevante el poco conocimiento y uso de las redes sociales tanto gen��ricas como espec��ficas, as�� como otro tipo de aplicaciones web. Destaca, por otro lado, que la edad de los participantes no ha condicionado la importancia percibida sobre las capacidades de las TIC para el desarrollo en la docencia y la investigaci��n.

Ideas previas y aprendizaje significativo en la ense��anza de la Geograf��a

La primera cuesti��n que cabe preguntarse ante el t��tulo propuesto es si todav��a es necesario investigar en las ideas previas, m��s si se tiene en cuenta el elevado n��mero de trabajos realizados y publicados sobre este tema. Obviamente, la respuesta es que s��, pues se considera que la b��squeda de soluci��n a muchos de los actuales retos de la ense��anza de la Geograf��a pasa, entre otras muchas consideraciones como indica Pozo (2006), por cambiar las representaciones que profesores y alumnos tienen sobre el aprendizaje y la ense��anza.

An Electronic Reconfigurable Neural Architecture for Intrusion Detection

The explosive growth of the traffic in computer systems has made it clear that traditional control techniques are not adequate to provide the system users fast access to network resources and prevent unfair uses. In this paper, we present a reconfigurable digital hardware implementation of a specific neural model for intrusion detection. It uses a specific vector of characterization of the network packages (intrusion vector) which is starting from information obtained during the access intent. This vector will be treated by the system. Our approach is adaptative and to detecting these intrusions by using a complex artificial intelligence method known as multilayer perceptron. The implementation have been developed and tested into a reconfigurable hardware (FPGA) for embedded systems. Finally, the Intrusion detection system was tested in a real-world simulation to gauge its effectiveness and real-time response.

An Interdisciplinary Practical for Multimedia Engineering Students

Interdisciplinary projects in the industry typically require collaboration between professionals from various fields. However, this relationship is not generally addressed in the training offered by university programs, which often ignore this interdisciplinary approach. This paper offers an example of interdisciplinary interaction through joint laboratory activities in the curricula of two very different degree programs, i.e., Multimedia Engineering and Teacher Training in Primary Education. The programs' students formed an interdisciplinary team of multimedia engineers and trainee teachers to develop a Web product for children's cognitive development. The complexity of the task required students to engage in close and strong interdisciplinary cooperation and communication; in turn, they benefited from the synergy offered by collaborative work. The results of this paper, presented from the perspective of the multimedia engineering students, demonstrate a significant increase in their academic performance compared to the control group. This paper shows that university studies can incorporate an interdisciplinary perspective to engineering education without the need to introduce a specific course on the topic, thus avoiding further demands on the curriculum schedule.

Homenage al centenario de la independencia de Ame��rica : biografi��a de Don Jose�� Joaqui��n de Lemoine /

Mode of access: Internet.

Canto a�� Jose�� Marti��.

Mode of access: Internet.

Romances, cantares y li��ricas

Mode of access: Internet.

La republica literaria. Revista de ciencias, letras y bellas artes.

Imprint varies: v. 5, Tip. de "La republica literatura."

Fuertes y de��biles, novela.

Mode of access: Internet.

Historias, historietas y cuentecillos /

Errata slip p. 447-448.

Escuela de Daniel : discursos politicos, y morales a su profecia /

Mode of access: Internet.

Alegacion legal, canonica, theologica, politica y feudal : sobre la justificada razon con que los ... Reyes Catholico ... de Cerde��a, hacen la guerra contra el serenissimo Emperador Carlos VI /

Mode of access: Internet.

Reflexiones oportunas para el uso y manejo de la lengua latina y algunas noticias para la inteligencia del estilo y elegancia de la Sagrada Escritura : entresacadas de varios autores y dirigidas a las clases de gramatica y retorica del Colegio Pontificio y Episcopal de Barcelona /

Mode of access: Internet.