OER as a Model for Enhanced Teaching and Learning

This article presents preliminary findings from a research study conducted by the Institute for the Study of Knowledge Management in Education on the role of open educational resources (OER) in transforming pedagogy. Based on a study of art and humanities teachers participating in an OER training network, the study reveals how exposure to OER resources and tools support collaboration among teachers, as well as new conversations about teaching practices. These findings have implications for engaging teachers in adopting new OER use practices, and for how OER can be integrated as a model for innovation in teaching and in resource development.

An improved method for discovering link criticality in transport networks

Quantitatively assessing the importance or criticality of each link in a network is of practical value to operators, as that can help them to increase the network's resilience, provide more efficient services, or improve some other aspect of the service. Betweenness is a graph-theoretical measure of centrality that can be applied to communication networks to evaluate link importance. However, as we illustrate in this paper, the basic definition of betweenness centrality produces inaccurate estimations as it does not take into account some aspects relevant to networking, such as the heterogeneity in link capacity or the difference between node-pairs in their contribution to the total traffic. A new algorithm for discovering link centrality in transport networks is proposed in this paper. It requires only static or semi-static network and topology attributes, and yet produces estimations of good accuracy, as verified through extensive simulations. Its potential value is demonstrated by an example application. In the example, the simple shortest-path routing algorithm is improved in such a way that it outperforms other more advanced algorithms in terms of blocking ratio

Guía de usos y estilo en las redes sociales del Sistema Sanitario Público de Andalucía

Contiene guía rápida para la inmersión en redes sociales (p. 52-56) y Anexo- Plantilla de ayuda para la puesta en marcha de un proyecto en redes sociales (p. 57)

Estratègies comunicatives de promoció de l'activitat física saludable a les xarxes socials

En aquest article s'ha realitzat un anàlisi de la promoció de l'activitat física que es fa emprant les xarxes social. Per dur-lo a terme s'han seleccionat catorze dels millors hospitals dels EEUU i s'ha realitzat un exhaustiu examen de la interacció així com un registre de les diferents formes que han adoptat les propostes relacionades amb la promoció directe de l'activitat física. A partir dels resultats i les categories escollides s'ha detectat un marc cognitiu que ens permet fer-nos una idea del tipus de regal que permet crear una comunitat, quines estratègies han estat les més vàlides alhora de crear un veritable sentiment d'afiliació a la promoció de l'activitat física saludable.

Estudi descriptiu de l'ús de xarxes socials online per la promoció de l'alimentació saludable en hospitals dels Estats Units

Internet i les xarxes socials online s'estan mostrant com a útils en la promoció de la salut i en la difusió d'hàbits saludables. L'objectiu del treball és observar el grau d'utilització que es fa de les xarxes socials online per a la promoció d'hàbits d'alimentació saludable. S'ha dissenyat un estudi observacional descriptiu transversal amb una mostra de 14 hospitals dels Estats Units. A l'estudi s'ha trobat una bona freqüència d'utilització dels canals que ofereix la xarxa però una baixa freqüència per fer promoció d'hàbits saludables en alimentació.

JXTA Hordes : Anonimat en una xarxa P2P feta amb JXTA

Aquest projecte consisteix en definir i desenvolupar un servei per JXTA que permeti l'anonimat en comunicacions P2P. Aquest servei s'ha desenvolupat fent servir els mecanismes que ofereix JXTA de forma que estigui el màxim d'integrat al sistema i disponible per qualsevol aplicació JXTA que requereix d'aquesta funcionalitat. Aquest servei està basat en un protocol existent d'anonimat descrit al paper Hordes: A Multicast Based Protocol for Anonymity (Brian Neil Levine & Clay Shields) triat després de fer-ne un estudi dels protocols existents actualment.

La sostenibilidad del sistema sanitario desde una perspectiva de redes sociales: una propuesta para la promoción de hábitos saludables y apoyo social

The search of new health management formulas focused to give wide services is one of the priorities of our present health policies. Those formulas examine the optimization of the links between the main actors involved in public health, ie, users, professionals, local socio-political and corporate agents. This paper is aimed to introduce the Social Network Analysis as a method for analyzing, measuring and interpreting those connections. The knowledge of people's relationships (what is called social networks) in the field of public health is becoming increasingly important at an international level. In fact, countries such as UK, Netherlands, Italy, Australia and U.S. are looking formulas to apply this knowledge to their health departments. With this work we show the utility of the ARS on topics related to sustainability of the health system, particularly those related with health habits and social support, topics included in the 2020 health strategies that underline the importance of the collaborative aspects in networks.

Intronic variants in the NFKB1 gene may influence hearing forecast in patients with unilateral sensorineural hearing loss in Meniere's disease.

Meniere's disease is an episodic vestibular syndrome associated with sensorineural hearing loss (SNHL) and tinnitus. Patients with MD have an elevated prevalence of several autoimmune diseases (rheumatoid arthritis, systemic lupus erythematosus, ankylosing spondylitis and psoriasis), which suggests a shared autoimmune background. Functional variants of several genes involved in the NF-κB pathway, such as REL, TNFAIP3, NFKB1 and TNIP1, have been associated with two or more immune-mediated diseases and allelic variations in the TLR10 gene may influence bilateral affectation and clinical course in MD. We have genotyped 716 cases of MD and 1628 controls by using the ImmunoChip, a high-density genotyping array containing 186 autoimmune loci, to explore the association of immune system related-loci with sporadic MD. Although no single nucleotide polymorphism (SNP) reached a genome-wide significant association (p<10(-8)), we selected allelic variants in the NF-kB pathway for further analyses to evaluate the impact of these SNPs in the clinical outcome of MD in our cohort. None of the selected SNPs increased susceptibility for MD in patients with uni or bilateral SNHL. However, two potential regulatory variants in the NFKB1 gene (rs3774937 and rs4648011) were associated with a faster hearing loss progression in patients with unilateral SNHL. So, individuals with unilateral MD carrying the C allele in rs3774937 or G allele in rs4648011 had a shorter mean time to reach hearing stage 3 (>40 dB HL) (log-rank test, corrected p values were p = 0.009 for rs3774937 and p = 0.003 for rs4648011, respectively). No variants influenced hearing in bilateral MD. Our data support that the allelic variants rs3774937 and rs4648011 can modify hearing outcome in patients with MD and unilateral SNHL.

Proposição de um modelo exploratório dos fatores relevantes para o desempenho profissional do CIO brasileiro

O objetivo neste trabalho é obter um modelo exploratório dos fatores relevantes para o desempenho profissional do Chief Information Officer (CIO) brasileiro. Para tal, foi realizada uma pesquisa de natureza exploratória por meio de abordagem quantitativa. Foram considerados na pesquisa seis frameworks teóricos encontrados na literatura mundial, os quais descrevem atributos associados ao desempenho profissional do CIO, buscando assim obter-se um melhor entendimento do problema de pesquisa. A partir daí, foi elaborado um questionário, sendo esse o instrumento de coleta de dados utilizado neste estudo. Aplicado o questionário, a partir de um web survey, obteve-se a participação de 111 respondentes, todos CIOs brasileiros. Uma vez efetuada a coleta de dados, foi adotada análise fatorial exploratória, com o propósito de obter-se um modelo exploratório. Como resultado do estudo, propôs-se um modelo exploratório de sete fatores relevantes para o desempenho profissional do CIO brasileiro, quais sejam: visão do negócio; suporte à organização via tecnologia da informação (TI); capacidade de influenciar a organização; capacidade técnica; networking externo; gestão da operação de TI; e visão inovadora do uso de TI. Ao final, são apresentadas as limitações do artigo, assim como propostos passos futuros para essa linha de pesquisa.

Social media and political change: The case of the 2011 revolutions in Tunisia and Egypt

Throughout the past decade, social media have come on the scene of various popular revolts. Their role as tools of information and coordination of social movements, from the Iranian Green Movement in 2009 to the Arab uprisings in 2011, has been widely debated. In most cases, online activism through blogs, Facebook, Twitter or other forms of social media has allowed citizens to be part of a social networking exercise and to engage in a public sphere that would have otherwise been unreachable to them due to severe repression. In Tunisia and Egypt, social media helped protests start and expand thanks to their ability to coordinate and disseminate information quickly. The new information and communication tools were an influential factor in accelerating the revolutionary processes across the Arab world, albeit they cannot be seen as neither the spur nor the drivers of any revolution.

Comprehensive evaluation of the IEEE 802.15.4 MAC layer performance with retransmissions

Supported by IEEE 802.15.4 standardization activities, embedded networks have been gaining popularity in recent years. The focus of this paper is to quantify the behavior of key networking metrics of IEEE 802.15.4 beacon-enabled nodes under typical operating conditions, with the inclusion of packet retransmissions. We corrected and extended previous analyses by scrutinizing the assumptions on which the prevalent Markovian modeling is generally based. By means of a comparative study, we singled out which of the assumptions impact each of the performance metrics (throughput, delay, power consumption, collision probability, and packet-discard probability). In particular, we showed that - unlike what is usually assumed - the probability that a node senses the channel busy is not constant for all the stages of the backoff procedure and that these differences have a noticeable impact on backoff delay, packet-discard probability, and power consumption. Similarly, we showed that - again contrary to common assumption - the probability of obtaining transmission access to the channel depends on the number of nodes that is simultaneously sensing it. We evidenced that ignoring this dependence has a significant impact on the calculated values of throughput and collision probability. Circumventing these and other assumptions, we rigorously characterize, through a semianalytical approach, the key metrics in a beacon-enabled IEEE 802.15.4 system with retransmissions.

Identity formation in social networks websites: facebook and the interaction between young individuals in the cases of Slovenia and Catalonia

This paper lays down some theoretical framework for further research to be made on the subject of how identity of young Slovenian and Catalan users is forming within the social networking website Facebook. The author pursues his interest based on observation of how communicationand thus interaction between users is changing and how this is reflected in everyday practices. In so doing he tries to identify the connections between the individual, society and technology, asthese are more and more interwoven, and we cannot think one without the other in thecontemporary globalised world.

Does foreign direct investment crowd out domestic entrepreneurship?

In analyzing firm entry and exit across Belgian manufacturing industries,this paper presents evidence that import competition and foreign directinvestment discourage entry and stimulate exit of domestic entrepreneurs.These results are in line with theoretical occupational choice modelsthat predict foreign direct investment would crowd out domesticentrepreneurs through their selections in product and labor markets.However, the empirical results also suggest that this crowding out effectmay be moderated or even reversed in the long-run due to the long termpositive effects of FDI on domestic entrpreneurship as a result oflearning, demonstration, networking and linkage effects between foreignand domestic firms.

Group mentoring for women starting a PhD: a "duty free zone" to build professional identity

Despite increasing numbers of women attaining higher level academic degrees, gender disparities remain among higher education and among university faculties. Some have posited that this may stem from inadequate academic identity development of women at the doctoral level. While existing gender differences may stem from multiple and variable origins, mentoring has been proposed as a viable means to promote academic identity development and address these gender gaps. This study used a qualitative, narrative case study design to evaluate "StartingDoc" a structured mentoring program launched among Swiss Universities aimed at promoting networking and academic identity development among female doctoral students. Herein we describe the 9 emergent themes which arose from the small-group mentoring program and suggest that such an approach is both feasible and beneficial for young female academics. Further work is needed to elucidate the most effective strategies for developing and retaining women in academia.