Identyfikacja blednych podpisow w kolekcjach

Weryfikacja poprawnosci podpisów cyfrowych jest obliczeniowo kosztowna. Aby ja zwiekszyc, zamiast pojedynczych podpisów weryfikacji poddaje sie kolekcje. Jezeli wszystkie podpisy w kolekcji sa poprawne, to cała kolekcja jest akceptowana. Pojawienie sie błednych podpisów w kolekcji powoduje, ze weryfikacja jest błedna. Nie mozna odrzucic całej kolekcji, zachodzi wiec koniecznosc identyfikacji błednych podpisów w kolekcji. W artykule zdefiniowano metody identyfikacji błednych podpisów. W szczególnosci okreslono weryfikacje typu „dziel i rzadz”, w których wejsciowe kolekcje sa dzielone na podkolekcje tak długo, az koncowe błedne kolekcje zawieraja pojedyncze podpisy. Opisano równiez weryfikator Hamminga identyfikujacy jeden błedny podpis w kolekcji oraz uogólniono ten weryfikator do postaci dwupoziomowego weryfikatora, umozliwiajacego identyfikacje dwóch błednych podpisów. Podano tez definicje ogólnego weryfikatora zdolnego do identyfikacji dowolnej liczby błednych podpisów w kolekcjach.

Quota and Licensing Systems in the VIII Division European Anchovy

Paper presented at 12th Annual Conference of EAERE 2003 Bilbao (Spain)

Plain English: Applying Principles to Home School Written Communication Considering Diverse Families

Schools attempting to engage with the families of all learners, including those with culturally and linguistically diverse backgrounds recognize the importance of effective oral and written communication. The aim of this study is to determine if school generated written communication created by an urban school district serving a culturally and linguistically diverse population in the Northeast of the US adhered to the principles of plain English. This exploratory research examined exemplar pieces of written school generated communication, using different forms of linguistic analysis to determine whether the communication contained elements recognized to facilitate or impede the comprehensibility of each piece of communication. Additionally, a text assessment tool which can help schools to analyze the written text communication they send to families was developed and refined.

Microstructural and geochemical investigation of North American lower-middle Paleozoic trilobites and recent arthropods

Trilobites ¥tere collected from Ordovician and Devonian formations of Ontario} New York} Ohio} Oklahoma} and Indiana. Diversity was generally low} but 19..?telllS and Ph..~tY>ps ¥tere the most abundant species from the Ordovician and Devonian} respectively. Recent marine arthropods ¥tere collected from the Atlantic shore of the middle Florida Keys} and from the Pacific and lagoonal waters at Cape Beale} B. C. Fresh-water arthropods were collected along the shore of the Severn River in northcentral Ontario. Cuticles ¥tere analyzed for major} minor and trace elements, 180 and 13C isotopes, as ¥tell as examined by scanning electron micr?scope to identify original and diagenetic fabrics. Examination of trilobite cuticles by scanning electron microscope revealed several microstructures consistent with those observed in Recent arthropods. Microstructures} such as setae and tegumental gland duct openings} in like sized Lim/IllS and Isoteline trilobites may indicate common ancestral origins for these organisms, or simply parallel cuticle evolutions. The dendritic microstructure, originally' thought to be a diagenetic indicator, was found in Recent specimens and therefore its presence in trilobites may be suggestive of the delicate nature of diagenesis in trilobites. The absence of other primary microstructures in trilobites may indicate alteration, taxonomic control} or that there is some inherent feature of S EM examination which may' not allow detection of some features} while others are apparently visit·le onl~1 under SH.·1. The region of the cuticle sampled for examination is also a major influence in detecting pristine microstructures, as not all areas of trilobite and Recent arthropod cuticles will have microstructures identifiable in a SEM study. Subtleties in the process of alteration, however} ma~·· leave pristine microstructures in cuticles that are partial~/ silicified or do 10m itized, and degree and type of alteration may vary stratigraphically and longitudinally within a unit. The presence of fused matrices, angular calcite rhombs, and pyrite in the cuticle are thought to be indicative of altered cuticles, although pyritization may not affect the entire cuticle. t-~atural processes in Recent arthropods, such as molting, lead to variations in cuticle chemistries, and are thought to reflect the area of concentration of the elements during calcification. The level of sodium in Recent arthropods was found to be higher than that in trilobites, but highly mobile when sUbjected to the actions of VY'€'athering. Less saline water produced lovy'€'r magnesium and higher calcium values in Recent specimens .. and metal variations in pristine Ordovician trilobite cuticle appears to follow the constraints outlined for Recent arthropods, of regulation due to the chemislry of the surrounding medium. In diagenetic analysis, sodium, strontium and magnesium proved most beneficial in separating altered from least altered trilobites. Using this criterion, specimens from shale show the least amount of geochemical alteration, and have an original mineralogy of 1.7 - 2.4 mole % MgC03 (8000 t(> 9500 ppm magnesium) for both /s>..?/e/11S lJA'i.riff!11S and PseIAit'11J17ites I..itmirpin..itl/~ and 2.8 - 3.3 mole % MgC03 (5000 to 7000 ppm magnesium) for Ph.i{).?PS This is Slightly lower than the mineralogy of Recent marine arthropods (4.43 - 12.1 mole % MgC03), and slightly higher than that of fresh-water crayfish (0.96 - 1.82 mole % MgC03). Geochemically pristine trilobites were also found to possess primary microstructures. Stable isotope values and trends support the assertion that marine-meteoriclburial fluids were responsible for the alteration observed in a number of the trilobite specimens. The results of this stUdy suggest that fossil material has to be evaluated separately along taxonomic and lithological lines to arrive at sensible diagenetic and e nvironmenta I interpretations.

Observations de pulsateurs compacts à l'aide de la caméra Mont4K CCD

Les pulsateurs compacts sont des étoiles présentant des variations intrinsèques de luminosité dont les gravités de surface sont supérieures à 100,000 cm/s² On retrouve parmi ces objets deux familles des sous-naines chaudes de type B (sdB) pulsantes et quatre familles distinctes de naines blanches pulsantes. Dans le but d'observer les pulsations de tels objets pour ensuite analyser leur propriétés grâce à l'astéroséismologie, l'Université de Montréal, en collaboration avec le Imaging Technology Laboratory (ITL - University of Arizona), a développé la caméra Mont4K (Montreal4K) CCD qui est, depuis le printemps 2007, le principal détecteur employé au télescope Kuiper de 1.55 m du Mt Bigelow (Steward Observatory, University of Arizona). à l'aide de ce montage, des observations ont été menées pour quelques-uns de ces pulsateurs compacts. La première cible fut HS 0702+6043, un pulsateur hybride. Une importante mission pour cet objet, réalisée du 1er novembre 2007 au 14 mars 2008, a permis d'identifier 28 modes de pulsations pour cet objet en plus de mettre en évidence pour certains de ces modes d'importantes variations d'amplitude. Deux autres cibles furent les naines blanches pulsantes au carbone de type « Hot DQ » SDSS J220029.08-074121.5 et SDSS J234843.30-094245.3. Il fut possible de montrer de façon indirecte la présence d'un fort champ magnétique à la surface de J220029.08-074121.5 grâce à la présence de la première harmonique du mode principal. En outre, pour ces deux cibles, on a pu conclure que celles-ci font bel et bien partie de la classe des naines blanches pulsantes au carbone.

A systematic approach to learning aimed at graduate physiotherapists practicing in South West Victoria

Mandatory standards developed by allied health professions for registration and accreditation purposes require continuing professional development (CPD) that can be accessed by all professionals, particularly those practicing in regions removed from the bigger cities. To improve and maintain competencies and standards of care CPD programs need to be accessible and provide opportunities for lifelong learning of efficacious evidence-based intervention. Despite the benefits of CPD, problems reported include access and lack of clarity on the usefulness of CPD in relation to clinical practice. The aim of this study was to develop a CPD program for physiotherapists in the south west of Victoria by employing a systematic approach that included a needs assessment as a vehicle to compose the 2004/2005 program and to optimise ease of attendance, relevance and perceived applicability to clinical practice. The education delivered was purposely in line with the principles of adult learning and presenters were instructed to focus for at least one-third of the workshop time on praxis. This study measured attendance levels throughout the program and satisfaction with the education received in terms of perceived clinical benefits in order to understand the benefits of employing detailed local needs assessments for rural professionals. All workshops and presentations were evaluated with regard to suitability of the venue, presenter style, content, applicability to clinical practice and overall impression by using 7-point Likert scales. Modes and medians both were 7, with seven being rated as highly successful. Attendance was high, 57.2% attended four or more sessions and 68.6% attended at least one workshop in the clinic over the period. In addition, 22.9% attended at least one of the two conducted courses that were held in that period. Although most physiotherapists (68.6%) reported some effect, 20% of the physiotherapists perceived that the CPD program had a large effect on their clinical skills and 29.4% found that patient demand had increased. This paper will discuss the results in light of approaches for allied health workplace learning.

Library learning space design : a good student fit

We are seeing a renewed interest nationally and internationally in the design and development of new learning environments. There is, at Deakin and more generally in the higher education sector, recognition that the students' experience of a flexible and supportive educational environment is central to excellent teaching and fosters student success. Recent Carrick Institute (now the Australian Learning and Teaching Council) grants have supported the need for a greater understanding of good practice, with workshops being held around the country.

The student experience is integral to planning the re-purposing of Library spaces at Deakin's two larger campuses, Waurn Ponds and Burwood. The physical spaces within the Library will be flexible and provide support for individual learning and study, group learning and discussion, with ubiquitous ICT access and assistance services readily accessible. The improvement to the amenities, including contemporary, wired casual spaces, will encourage students to come on to campus and stay, strengthening opportunities to build a learning community. This learning community can extend through opportunities for social networking to students studying online and off-campus.

Library services and spaces will align with the new pedagogical needs of the university, providing holistic support for students' flexible learning experiences.
"We know that space can have a significant impact on teaching and learning . . . What we know about how people learn has changed our ideas about learning space. There is value from bumping into someone and having a casual conversation. There is value from hands on, active learning as well as from discussion and reflection. There is value in being able to receive immediate support when needed and from being able to integrate multiple activities [and multiple information sources] to complete a project." (Diane Oblinger, Learning Spaces, EDUCAUSE, 2006).