Seguridad en red con software libre

En este proyecto se aborda el tema de cómo poder dar seguridad a una red mediante el software libre.

Green Collar Jobs Initiative Committee, January 8, 2010

A team representing Iowa Workforce Development, the Office of Energy Independence, the Department of Natural Resources, the Department of Public Safety, the Iowa Utilities Board, the Department of Economic Development and Iowa Community Colleges reviewed many reports on green jobs published by states, associations and private research companies with the purpose of determining whether the number of “green collar” jobs in Iowa’s economy can be quantified. The team found that there was no standard on definition, identifying jobs or occupations, or level of inclusion for counting green collar jobs. All reports were tailored to their own audiences, without regard to the ability to measure their results against findings made by other states or organizations. Green collar jobs can be found in construction, manufacturing, installation, maintenance, agriculture and many other sectors of the economy. While some of the green collar jobs are in new occupations and industries, most are existing jobs that demand new green collar skills.

Empresas, instituciones y red social: la Compañía Hispanoamericana de Electricidad (CHADE) entre Barcelona y Buenos Aires

En este trabajo se presenta la vinculación entre la Casa de América de Barcelona y la Compañía Hispanoamericana de Electricidad (CHADE) en Buenos Aires a través del estudio de tres momentos: primero, la fundación de la asociación y la presencia de Francisco Cambó en el Centro Jurídico Iberoamericano; segundo, la fundación de la CHADE para salvar los capitales alemanes del pago de reparaciones económicas a los Aliados por su participación en la Primera Guerra Mundial; y tercero, la conversión de la asociación americanista barcelonesa en Instituto de Economía Americana (IDEA)-Casa de América para reforzar su naturaleza internacional en consonancia con la Sociedad de Naciones, así como el declive de la asociación por la interrupción de remesas de capital del Cono Sur que llegaban a Barcelona en forma de subsidios para la asociación americanista.

Apport de l'angiographie au vert d'indocyanine (ICG) dans la localisation des néovascularisations chororoidiennes occultes [Value of indocyanine green angiography in localization of occult choroid neovascularization]

PURPOSE: To determine the role of Indocyanin Green (ICG) angiography in localizing occult new vessels associated with age-related macular degeneration (ARMD) and assess the possibilities of ICG guided laser photocoagulations. PATIENTS AND METHODS: Fluorescein and ICG angiographies (IMAGEnet system) of 62 patients with occult new vessels (ONV), serous (SPED) or vascular (VPED) pigment epithelium detachment have been studied. RESULTS: Based on fondoscopic examination and fluorescein angiography, 43 eyes (69%) disclosed ONV, 8 (13%) SPED and 11 (18%) VPED. Choroidal neovascularisation was confirmed by ICG angiography in 37 ONV cases (86%), in 8 (72%) VPED cases, but in no SPED. Conversion of ONV in classical neovascular membranes was possible in 19 ONV cases (44%) and in 6 (54%) VPED cases, making a laser photocoagulation possible in 9 eyes (36%). CONCLUSION: ICG angiography plays an important role in the evaluation, classification and laser treatment of patients with ONV secondary to ARMD.

Phytochrome interacting factors 4 and 5 redundantly limit seedling de-etiolation in continuous far-red light.

Phytochromes are red/far-red photosensors that regulate numerous developmental programs in plants. Among them, phytochrome A (phyA) is essential to enable seedling de-etiolation under continuous far-red (FR) light, a condition that mimics the environment under a dense canopy. The ecological relevance of this response is demonstrated by the high mortality rate of phyA mutant plants that germinate in deep vegetational shade. phyA signaling involves direct interaction of the photoreceptor with phytochrome-interacting factors PIF1 and PIF3, members of the bHLH transcription factor family. Here we investigated the involvement of PIF4 and PIF5 in phyA signaling, and found that they redundantly control de-etiolation in FR light. The pif4 pif5 double mutant is hypersensitive to low fluence rates of FR light. This phenotype is dependent on FR light perception by phyA, but does not rely on alterations in the phyA level. Our microarray analysis shows that PIF4 and PIF5 are part of an inhibitory mechanism that represses the expression of some light-responsive genes in the dark, and that they are also needed for full expression of several growth-related genes in the light. Unlike PIF1 and PIF3, PIF4 and PIF5 are not degraded in response to FR light, indicating that they are light-regulated by a different mechanism. Our genetic analysis suggests that this is achieved through sequestration of these PIFs by the closely related bHLH transcription factor HFR1 (long hypocotyl in FR light).

Sobre la sociedad red

Crónica del curso ¿Sociedad red: Cambios sociales, organizaciones y ciudadanos¿ (Barcelona, octubre 2008). Los temas tratados fueron el estado de desarrollo de la sociedad red, organizaciones, ciudadanía, comunicación e innovación.

Valoracion del Impacto de la Informacion en Internet: Altavista, el 'Citation Index' de la red

En el presente artículo se recoge una metodología para la valoración del impacto de la información en Internet, usando las capacidades de indización y recuperación del buscador Altavista. Se aprovecha el contexto para describir la función de los metaelementos del HTML como mecanismo de estructuración y ordenación de la información. Se discuten las limitaciones y fiabilidad del método y se exponen algunos datos que muestran la producción de páginas WWW a nivel de institución y a nivel nacional, así como su comparación con otros países europeos. Se hace especial hincapié en la posibilidad de medir el impacto de estas páginas en función de las veces que son 'enlazadas' desde páginas externas de manera similar a como funciona el 'Citation Index' del Institute for Scientific Information.

Audit report on the City of Red Oak, Iowa for the year ended June 30, 2009

Audit report on the City of Red Oak, Iowa for the year ended June 30, 2009

Audit report on the Disaster Grants – Public Assistance program of the Green Bay Levee and Drainage District in Lee County, Iowa for the year ended June 30, 2009

Audit report on the Disaster Grants – Public Assistance program of the Green Bay Levee and Drainage District in Lee County, Iowa for the year ended June 30, 2009

Fate of nickel ion in (II-III) hydroxysulphate green rust synthesized by precipitation and coprecipitation

In order to investigate the efficiency of sulfate green rust (GR2) to remove Ni from solution, GR2 samples were synthesized under controlled laboratory conditions. Some GR2 samples were synthesized from Fe(II) and Fe(III) sulfate salts by precipitation. Other samples were prepared by coprecipitation, of Ni(II), Fe(II) and Fe(III) sulfate salts, i.e., in the presence of Ni. In another sample, Ni(II) sulfate salt was added to pre-formed GR2. After an initial X-ray diffraction (XRD) characterization all samples were exposed to ambient air in order to understand the role of Ni in the transformation of the GR2 samples. XRD was repeated after 45 days. The results showed that Nious GR2 prepared by coprecipitation is isomorphous to Ni-free GR2, i.e. Ni is incorporated into the crystalline structure. Fe(II) was not replaced by Ni(II) in the crystalline structure of GR2 formed prior to exposure to solution-phase Ni. This suggests Ni was adsorbed to the GR2 surface. Sulfate green rust is more efficient in removing Ni from the environment by coprecipitation.

Substituição dos parâmetros do modelo de Green-Ampt-Mein-Larson para estimativa da infiltração em alguns solos do Brasil

A partir de uma análise detalhada do processo de infiltração de água no solo, foram propostas alternativas para adequação dos parâmetros de entrada do modelo de Green-Ampt-Mein-Larson (GAML), na tentativa de melhorar a eficiência da estimativa da infiltração em alguns solos brasileiros. As adequações consistiram em substituir a condutividade hidráulica do solo saturado (K0) pela taxa de infiltração estável (Tie) e o teor de água do solo saturado (q s) pelo teor de água na zona de transmissão (q w), além de estabelecer uma equação para estimativa do potencial matricial na frente de umedecimento (y f) com base nos parâmetros do modelo de curva de retenção de água de Brooks & Corey. Avaliou-se o desempenho do conjunto de adequações propostas (GAML-t) para estimativa da infiltração de água em três solos: Latossolo Vermelho-Amarelo, Latossolo Vermelho e Argissolo Vermelho. O desempenho do GAML-t foi comparado com o obtido pelo GAML aplicado em sua forma original e adequado segundo cinco diferentes formas, evidenciando-se que o primeiro obteve melhor desempenho nos três solos estudados.

Resigned but satisfied: The negative impact of public service motivation and red tape on work satisfaction

This article examines the relationship between red tape, Public Service Motivation (PSM) and a particular work outcome labelled 'resigned satisfaction'. Using data from a national survey of over 3754 public servants working at the municipal level in Switzerland, this study shows the importance of looking more closely at the concept of work satisfaction and, furthermore, of thoroughly investigating the impact of the different PSM dimensions on work outcomes. Unsurprisingly, research findings show that red tape is the most important predictor of resignation. Nevertheless, when PSM dimensions are analysed separately, results demonstrate that 'commitment to public interest/civic duty' and, to a lesser extent, 'attraction to policy-making' decrease resignation, whereas 'compassion' and 'self-sacrifice' increase it. This study thus highlights some of the negative (or undesirable) effects of PSM that have not been previously addressed in PSM literature.

The red island and the seven dwarfs: body size reduction in Cheirogaleidae

AimSmall body size in Madagascar's dwarf and mouse lemurs (Cheirogaleidae) is generally viewed as primitive. We investigated the evolution of body size in this family and in its sister-taxon, the Lepilemuridae, from phylogenetic, ontogenetic and adaptive perspectives. LocationMadagascar. MethodsWe used a phylogenetic method to reconstruct the evolution of body size in lemurs, and allometric regression models of gestation periods and static and growth allometries in Cheirogaleidae and Lepilemuridae to test the hypothesis that dwarfing occurred as a result of truncated ontogeny (progenesis). We also examined adaptive hypotheses relating body size to environmental variability, life history, seasonality of reproduction, hypothermy (use of torpor), and a diet rich in plant exudates. ResultsOur results indicated that cheirogaleids experienced at least four independent events of body size reduction from an ancestor as large as living Lepilemuridae, by means of progenesis. Our interpretation is supported by the paedomorphic appearance and parallel ontogenetic trajectories of the dwarf taxa, as well as their very short gestation periods and increased fecundity. Lepilemur species that occupy more predictable environments are significantly larger than those occupying unpredictable habitats. Main conclusionsCheirogaleidae appear to be paedomorphic dwarfs, a consequence of progenesis, probably as an adaptation to high environmental unpredictability. Although the capacity to use hypothermy is related to small body size, this advantage is unlikely to have driven dwarfing in cheirogaleids. We propose that gummmivory/exudativory co-evolved with body size reduction in this clade, probably from a folivorous ancestor. Their small size is derived, and their suitability as models for the ancestral primate' is therefore dubious.