Gestión de la innovación tecnológica

Este documento hace una breve recopilación de referencias bibliográficas de Gestión Tecnológica, Innovación y su aplicación en las Empresas, recoge diferentes conceptos de estos dos grandes términos desde ópticas diferentes y luego el autor realiza un análisis básico de la aplicación de la Gestión Tecnológica en la empresa según la opinión generada por la información secundaria obtenidaIncluye bibliografí

Effects of first intermediate host density, host size and salinity on trematode infections in mussels of the south-western Baltic Sea

Trematode prevalence and abundance in hosts are known to be affected by biotic drivers as well as by abiotic drivers. In this study, we used the unique salinity gradient found in the south-western Baltic Sea to: (i) investigate patterns of trematode infections in the first intermediate host, the periwinkle Littorina littorea and in the downstream host, the mussel Mytilus edulis, along a regional salinity gradient (from 13 to 22) and (ii) evaluate the effects of first intermediate host (periwinkle) density, host size and salinity on trematode infections in mussels. Two species dominated the trematode community, Renicola roscovita and Himasthla elongata. Salinity, mussel size and density of infected periwinkles were significantly correlated with R. roscovita, and salinity and density correlated with H. elongata abundance. These results suggest that salinity, first intermediate host density and host size play an important role in determining infection levels in mussels, with salinity being the main major driver. Under expected global change scenarios, the predicted freshening of the Baltic Sea might lead to reduced trematode transmission, which may be further enhanced by a potential decrease in periwinkle density and mussel size

Ocorrência de um Potyvirus associado ao mosaico da açucena-gigante.

Plants of spider lily (Crinum sp) showing mosaic symptoms were found in Londrina, Paraná. Electron microscopy examinations revealed flexuous rod shaped particles and lamellar inclusion bodies in the cell cytoplasm. RT-PCR products of 2 kb were amplified by a pair of genus specific primers suggesting the association of a potyvirus, being this the first time a virus infection in this host is reported in Brazil

Model Building Code for Earthquakes

State-of-the-art model building code for seismic design and construction of buildings as well as recommendations for the updating of existing codes, so that ACS Member Countries be able to endow themselves with new appropriate codes or improve the existing ones, in order to develop better construction practices and techniques for the building of safe and reliable buildings.Banco Interamericano de Desarrollo///Washington D. C., Estados UnidosAgencia de Cooperación del Gobierno de Italia///ItaliaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ingeniería::Laboratorio Nacional de Materiales y Modelos Estructurales (LanammeUCR

Assessment of Fear of COVID-19 in Older Adults: Validation of the Fear of COVID-19 Scale

There is no information in Peru on the prevalence of mental health problems associated with COVID-19 in older adults. In this sense, the aim of the study was to gather evidence on the factor structure, criterion-related validity, and reliability of the Spanish version of the Fear of COVID-19 Scale (FCV-19S) in this population. The participants were 400 older adults (mean age = 68.04, SD = 6.41), who were administered the Fear of COVID-19 Scale, Revised Mental Health Inventory-5, Patient Health Questionnaire-2 items, and Generalized Anxiety Disorder Scale 2 items. Structural equation models were estimated, specifically confirmatory factor analysis (CFA), bifactor CFA, and structural models with latent variables (SEM). Internal consistency was estimated with composite reliability indexes (CRI) and omega coefficients. A bifactor model with both a general factor underlying all items plus a specific factor underlying items 1, 2, 4, and 5 representing the emotional response to COVID better represents the factor structure of the scale. This structure had adequate fit and good reliability, and additionally fear of COVID had a large effect on mental health. In general, women had more fear than men, having more information on COVID was associated to more fear, while having family or friends affected by COVID did not related to fear of the virus. The Spanish version of the Fear of COVID-19 Scale presents evidence of validity and reliability to assess fear of COVID-19 in the Peruvian older adult population

The effects of COVID-19 on the mental health of the Peruvian police and armed forces

Accepted: 23 Feb. 2021 The COVID-19 pandemic has had a profound impact on the mental health of the general population. However, little attention has been given to the mental health of a group considered an essential category, police officers and the members of the armed forces. This study examined the mental health of 204 members of the armed forces and the police department assigned to monitor the public roads to enforce the measures adopted by the Peruvian government. The instruments used in the study included the Fear of COVID-19 Scale (FCV-19S), and the Revised Mental Health Inventory-5. The results indicate that (during the last month), the majority of the participants felt nervous and edgy (81.8%), and hopeless or sad (68.2%). According to the participants, the feelings of hopelessness and discouragement were significantly affecting their ability to rebound (84.3%). Participants had mixed feelings in regards of the fear generated by COVID-19, 42.6% reported extreme anxiety or panic, 40.6% were uncomfortable to think about COVID-19, and 42.6% were afraid of losing their lives due to the illness. The fear of COVID-19 predicted 19.7% (Adjusted R2 = 0.197; F = 21.32; p = .000) of the participants’ mental health well-being. In summary, the results suggest the presence of important psychological stressors related to COVID-19 that could potentially led to the development of mental health disorders among the Peruvian police and armed forces

A generalized equation of state for dark energy

A generalized parameterization $w_\beta(z)$ for the dark energy equation of state (EoS) is proposed and some of its cosmological consequences are investigated. We show that in the limit of the characteristic dimensionless parameter $\beta \to +1, 0$ and -1 some well-known EoS parameterizations are fully recovered whereas for other values of $\beta$ the proposed parameterization admits a wider and new range of cosmological solutions. We also discuss possible constraints on the $w_\beta(z)$ parameters from current observational data.Comment: 6 pages, 4 figures, Accepted for publication in Phys. Rev.

Satisfaction with sex life scale: new psychometric evidence in a Portuguese population

Accepted: 19 Oct. 2021 Introduction: In recent years, greater attention has been paid to research on sexual satisfaction because of its association with general well-being and increased interest in sexual and public health issues. Objectives: The objective of this study was to evaluate the psychometric properties of the Satisfaction with Sex Life Scale (SWSLS). Methods: 2,154 Portuguese individuals (M = 34.67 years, SD = 17.18) participated. Confirmatory factor analysis (CFA) and item response theory (IRT) were used. Specifically, the internal structure, reliability and factor invariance of the SWSLS were evaluated by sex and age, as well as the characteristics and performance of the items based on the IRT analysis. Results: The SWSLS Confirmatory Factor Analysis confirmed that a one-dimensional model fit the data well, both for the total sample and for each sex and age group. Furthermore, the SWSLS has adequate reliability for internal consistency. Factor invariance across sex and age was supported by confirmatory multigroup factor analysis. The graduated response model showed a good fit for the one-dimensional model, while the item and test information curves indicated that the SWSLS is more informative to identify high levels of sexual satisfaction. Conclusion: The SWSLS has adequate psychometric properties to measure general sexual satisfaction in the Portuguese population regardless of age and sex

Satisfaction with Sex Life Scale: new psychometric evidence in a portuguese population

Accepted: 19 Oct. 2021 Introduction: In recent years, greater attention has been paid to research on sexual satisfaction because of its association with general well-being and increased interest in sexual and public health issues. Objectives: The objective of this study was to evaluate the psychometric properties of the Satisfaction with Sex Life Scale (SWSLS). Methods: 2,154 Portuguese individuals (M = 34.67 years, SD = 17.18) participated. Confirmatory factor analysis (CFA) and item response theory (IRT) were used. Specifically, the internal structure, reliability and factor invariance of the SWSLS were evaluated by sex and age, as well as the characteristics and performance of the items based on the IRT analysis. Results: The SWSLS Confirmatory Factor Analysis confirmed that a one-dimensional model fit the data well, both for the total sample and for each sex and age group. Furthermore, the SWSLS has adequate reliability for internal consistency. Factor invariance across sex and age was supported by confirmatory multigroup factor analysis. The graduated response model showed a good fit for the one-dimensional model, while the item and test information curves indicated that the SWSLS is more informative to identify high levels of sexual satisfaction. Conclusion: The SWSLS has adequate psychometric properties to measure general sexual satisfaction in the Portuguese population regardless of age and sex

Where to Forage When Afraid: Does Perceived Risk Impair Use of the Foodscape?

The availability and quality of forage on the landscape constitute the foodscape within which animals make behavioral decisions to acquire food. Novel changes to the foodscape, such as human disturbance, can alter behavioral decisions that favor avoidance of perceived risk over food acquisition. Although behavioral changes and population declines often coincide with the introduction of human disturbance, the link(s) between behavior and population trajectory are difficult to elucidate. To identify a pathway by which human disturbance may affect ungulate populations, we tested the Behaviorally Mediated Forage‐Loss Hypothesis, wherein behavioral avoidance is predicted to reduce use of available forage adjacent to disturbance. We used GPS collar data collected from migratory mule deer (Odocoileus hemionus) to evaluate habitat selection, movement patterns, and time‐budgeting behavior in response to varying levels of forage availability and human disturbance in three different populations exposed to a gradient of energy development. Subsequently, we linked animal behavior with measured use of forage relative to human disturbance, forage availability, and quality. Mule deer avoided human disturbance at both home range and winter range scales, but showed negligible differences in vigilance rates at the site level. Use of the primary winter forage, sagebrush (Artemisia tridentata), increased as production of new annual growth increased but use decreased with proximity to disturbance. Consequently, avoidance of human disturbance prompted loss of otherwise available forage, resulting in indirect habitat loss that was 4.6‐times greater than direct habitat loss from roads, well pads, and other infrastructure. The multiplicative effects of indirect habitat loss, as mediated by behavior, impaired use of the foodscape by reducing the amount of available forage for mule deer, a consequence of which may be winter ranges that support fewer animals than they did before development