983 resultados para CAS-1
Resumo:
The EHEA proposes a student-centered teaching model. Therefore, it seems necessary to actively involve the students in the teaching-learning process. Increasing the active participation of the students is not always easy in mathematical topics, since, when the students just enter the University, their ability to carry out autonomous mathematical work is scarce. In this paper we present some experiences related with the use of Computer Algebra Systems (CAS). All the experiences are designed in order to develop some mathematical competencies and mainly self-learning, the use of technology and team-work. The experiences include some teachers? proposals including: small projects to be executed in small groups, participation in competitions, the design of different CAS-Toolboxes, etc. The results obtained in the experiences, carried out with different groups of students from different engineering studies at different universities, makes us slightly optimistic about the educational value of the model.
Resumo:
Human CAS cDNA contains a 971-aa open reading frame that is homologous to the essential yeast gene CSE1. CSE1 is involved in chromosome segregation and is necessary for B-type cyclin degradation in mitosis. Using antibodies to CAS, it was shown that CAS levels are high in proliferating and low in nonproliferating cells. Here we describe the distribution of CAS in cells and tissues analyzed with antibodies against CAS. CAS is an approximately 100-kDa protein present in the cytoplasm of proliferating cells at levels between 2 x 10(5) and 1 x 10(6) molecules per cell. The intracellular distribution of CAS resembles that of tubulin. In interphase cells, anti-CAS antibody shows microtubule-like patterns and in mitotic cells it labels the mitotic spindle. CAS is removed from microtubules by mild detergent treatment (cytoskeleton preparations) and in vincristine- or taxol-treated cells. CAS is diffusely distributed in the cytoplasm with only traces present in tubulin paracrystals or bundles. Thus, CAS appears to be associated with but not to be an integral part of microtubules. Immunohistochemical staining of frozen tissues shows elevated amounts of CAS in proliferating cells such as testicular spermatogonia and cells in the basal layer cells of the colon. CAS was also concentrated in the respiratory epithelium of the trachea and in axons and Purkinje cells in the cerebellum. These cells contain many microtubules. The cellular location of CAS is consistent with an important role in cell division as well as in ciliary movement and vesicular transport.
Resumo:
This paper analyses the value of university collections of scientific instruments, their preservation, uses and improvement. It mostly relies on the data obtained by a research project on the scientific heritage of the University of Valencia.
Resumo:
A partir d’una assignatura espcífica de postgrau (12039), dissenyada per a estudiants egressats de geografia i història, un grup de professors de la facultat de filosofia i lletres (història contemporània, història de l’art, filología española, antropologia i filologia catalana), elaboren temes de treball diferents que dialoguen entre ells enriquint els objectius inicials de l’assignatura: els coneixements de la història i cultura contemporànies. Amb aquest punt de partida, la xarxa creada explora els punts següents: metodologies docents i col·laboratives per a fomentar la participació activa i el treball en equip de l’alumnat;s’hi treballa sobre alguns casos pràctics sobre els quals investiguen els diversos docents implicats: història i poètiques de la memòria: la violència política en la representació del franquisme, sobre les repercussions del franquisme en l’art i l’arquitectura, repercussions del franquisme en la història i en la novel·la, teatre, cine i documentals, i les seues connexions amb altres literatures i cultures pròximes.
