113 research outputs found
Information systems project manager soft competencies: A project-phase investigation
This article investigates the soft competencies by project phase that information systems (IS) project managers require for project success. The authors conducted 33 qualitative interviews to collect data from a sample of 22 IS project managers and business leaders located in Calgary, Alberta, Canada. The authors identified the key competencies for each of the IS project phases (initiation, planning, implementation, and close- out). The competencies were sorted into competency categories: personal attributes (e.g., eye for details), communication (e.g., effective questioning), leadership (e.g., create an effective project environment), negotiations (e.g., consensus building), professionalism (e.g., lifelong learning), social skills (e.g., charisma), and project management competencies (e.g., manage expectations). Each of the most important competencies is discussed and interconnections among competencies identified. How this research can be used by the practitioner and academic communities and the broader implications of this research are examined. © 2009 by the Project Management Institute
Sinking Organic Particles in the OceanâFlux Estimates From in situ Optical Devices
Optical particle measurements are emerging as an important technique for understanding the ocean carbon cycle, including contributions to estimates of their downward flux, which sequesters carbon dioxide (CO2) in the deep sea. Optical instruments can be used from ships or installed on autonomous platforms, delivering much greater spatial and temporal coverage of particles in the mesopelagic zone of the ocean than traditional techniques, such as sediment traps. Technologies to image particles have advanced greatly over the last two decades, but the quantitative translation of these immense datasets into biogeochemical properties remains a challenge. In particular, advances are needed to enable the optimal translation of imaged objects into carbon content and sinking velocities. In addition, different devices often measure different optical properties, leading to difficulties in comparing results. Here we provide a practical overview of the challenges and potential of using these instruments, as a step toward improvement and expansion of their applications
Aplicação da estimulação magnética transcraniana de repetição no tratamento do transtorno obsessivo-compulsivo e outros transtornos de ansiedade
A estimulação magnĂ©tica transcraniana de repetição (EMTr) vem sendo amplamente investigada como ferramenta terapĂȘutica em transtornos psiquiĂĄtricos, especialmente a depressĂŁo. Neste trabalho, compilamos as informaçÔes provenientes de estudos que investigaram as aplicaçÔes da EMTr no tratamento dos transtornos de ansiedade: transtorno do pĂąnico (TP), transtorno de estresse pĂłs-taumĂĄtico (TEPT), transtorno de ansiedade generalizada (TAG) e especialmente o transtorno obsessivo compulsivo (TOC). TrĂȘs estudos foram publicados abordando o tratamento do TOC, sendo que utilizaram metodologias e parĂąmetros de aplicação extremamente diversos, dificultando a obtenção de informaçÔes conclusivas sobre a efetividade deste tratamento. Quatro estudos publicados sobre TEPT e EMTr tambĂ©m apresentam dados conflitantes e pouco comparĂĄveis, mas destaca-se publicação recente com desenho duplo-cego e resultados positivos. Quanto ao TP e o TAG, apenas pequenas investigaçÔes iniciais foram realizadas. ConclusĂŁo: Apesar dos estudos citados, nĂŁo hĂĄ dados conclusivos sobre a eficĂĄcia terapĂȘutica da EMTr nos transtornos de ansiedade. Isto se dĂĄ especialmente devido aos estudos com amostras pequenas e desenho aberto. Portanto, devem ser realizados estudos mais aprofundados para que possamos obter estas respostas.Repetitive transcranial magnetic stimulation (rTMS) have been widely studied as a therapeutic method in psychiatric disorders, specially in major depression. In this paper, we have compiled the information from studies concerning the use of rTMS as a therapeutic tool for anxiety disorders: panic disorder (PD), post-traumattic stress disorder (PTSD), generalized anxiety disorder (GAD) and mainly obsessive-compulsive disorder (OCD).Three studies have been published concerning treatment of OCD with rTMS, but they are very different in their methods and in the application parameters and location, making it difficult to draw any conclusion about the efficacy of rTMS in this cases. Four studies published on PTSD also showed very ambiguous and hardly comparable data, but a recent double-blind study with positive results is discussed. Very few inicial investigations are available concerning PD and GAD. Conclusion: Although many studies are mentioned, thete is no conclusive data about the therapeutic efficacy of rTMS in anxiety disorders. It is mainly due to a large number of open-labelled studies with small sample sizes. Therefore, studies with a deeper approach are needed to provide this answers
Impact of sedentarism due to the COVID-19 home confinement on neuromuscular, cardiovascular and metabolic health: Physiological and pathophysiological implications and recommendations for physical and nutritional countermeasures.
The COVID-19 pandemic is an unprecedented health crisis as entire populations have been asked to self-isolate and live in home-confinement for several weeks to months, which in itself represents a physiological challenge with significant health risks. This paper describes the impact of sedentarism on the human body at the level of the muscular, cardiovascular, metabolic, endocrine and nervous systems and is based on evidence from several models of inactivity, including bed rest, unilateral limb suspension, and step-reduction. Data form these studies show that muscle wasting occurs rapidly, being detectable within two days of inactivity. This loss of muscle mass is associated with fibre denervation, neuromuscular junction damage and upregulation of protein breakdown, but is mostly explained by the suppression of muscle protein synthesis. Inactivity also affects glucose homeostasis as just few days of step reduction or bed rest, reduce insulin sensitivity, principally in muscle. Additionally, aerobic capacity is impaired at all levels of the O2 cascade, from the cardiovascular system, including peripheral circulation, to skeletal muscle oxidative function. Positive energy balance during physical inactivity is associated with fat deposition, associated with systemic inflammation and activation of antioxidant defences, exacerbating muscle loss. Importantly, these deleterious effects of inactivity can be diminished by routine exercise practice, but the exercise dose-response relationship is currently unknown. Nevertheless, low to medium-intensity high volume resistive exercise, easily implementable in home-settings, will have positive effects, particularly if combined with a 15-25% reduction in daily energy intake. This combined regimen seems ideal for preserving neuromuscular, metabolic and cardiovascular health.Highlights This paper describes the impact of sedentarism, caused by the COVID-19 home confinement on the neuromuscular, cardiovascular, metabolic and endocrine systems.Just few days of sedentary lifestyle are sufficient to induce muscle loss, neuromuscular junction damage and fibre denervation, insulin resistance, decreased aerobic capacity, fat deposition and low-grade systemic inflammation.Regular low/medium intensity high volume exercise, together with a 15-25% reduction in caloric intake are recommended for preserving neuromuscular, cardiovascular, metabolic and endocrine health
The abilities of improved schizophrenia patients to work and live independently in the community: a 10-year long-term outcome study from Mumbai, India
Background: The outcome of schizophrenia has several determinants. Socioecological factors, particularly living conditions, migration, community and culture, not only affect the level of risk but also the outcome. Mega cities around the world show a unique socioecological condition that has several challenges for mental health. The present study reports on the long-term status of patients with schizophrenia in such a mega city: Mumbai, India. Aim This study aims to reveal the long-term outcome of patients suffering from schizophrenia with special reference to clinical symptoms and social functioning.
Methods: The cohort for this study was drawn from a 10-year follow-up of first episode schizophrenia. Patients having completed 10 years of consistent treatment after first hospitalisation were assessed on psychopathological and recovery criteria. Clinical as well as social parameters of recovery were evaluated. Descriptive statistics with 95% confidence intervals are provided.
Results: Of 200 patients recruited at the beginning of this study, 122 patients (61%) were present in the city of Mumbai at the end of 10-year follow-up study period. Among 122 available patients, 101 patients (50.5%) were included in the assessment at the end of 10-year follow-up study period, 6 patients (3.0%) were excluded from the study due to changed diagnosis, and 15 patients (7.5%) were excluded due to admission into long-term care facilities. This indicates that 107 out of 122 available patients (87.7%) were living in the community with their families. Out of 101 (50.5%) patients assessed at the end of 10 years, 61 patients (30.5%) showed improved recovery on the Clinical Global Impression Scale, 40 patients (20%) revealed no improvement in the recovery, 43 patients (72.9%) were able to live independently, and 24 patients (40%) were able to find employment.
Conclusions: With 10 years of treatment, the recovery rate among schizophrenia patients in Mumbai was 30.5%. Among the patients, 87.7% of patients lived in the community, 72.9% of patients lived independently, and 40% of patients obtained employment. However, 60% of patients were unable to return to work, which highlights the need for continued monitoring and support to prevent the deterioration of health in these patients. It is likely that socioecological factors have played a role in this outcome
Boreal forest soil carbon fluxes one year after a wildfire: Effects of burn severity and management
The extreme 2018 hot drought that affected central and northern Europe led to the worst wildfire season in Sweden in over a century. The Ljusdal fire complex, the largest area burnt that year (8995 ha), offered a rare opportunity to quantify the combined impacts of wildfire and post-fire management on Scandinavian boreal forests. We present chamber measurements of soil CO2 and CH4 fluxes, soil microclimate and nutrient content from five Pinus sylvestris sites for the first growing season after the fire. We analysed the effects of three factors on forest soils: burn severity, salvage-logging and stand age. None of these caused significant differences in soil CH4 uptake. Soil respiration, however, declined significantly after a high-severity fire (complete tree mortality) but not after a low-severity fire (no tree mortality), despite substantial losses of the organic layer. Tree root respiration is thus key in determining post-fire soil CO2 emissions and may benefit, along with heterotrophic respiration, from the nutrient pulse after a low-severity fire. Salvage-logging after a high-severity fire had no significant effects on soil carbon fluxes, microclimate or nutrient content compared with leaving the dead trees standing, although differences are expected to emerge in the long term. In contrast, the impact of stand age was substantial: a young burnt stand experienced more extreme microclimate, lower soil nutrient supply and significantly lower soil respiration than a mature burnt stand, due to a thinner organic layer and the decade-long effects of a previous clear-cut and soil scarification. Disturbance history and burn severity are, therefore, important factors for predicting changes in the boreal forest carbon sink after wildfires. The presented short-term effects and ongoing monitoring will provide essential information for sustainable management strategies in response to the increasing risk of wildfire
Corrosion Mechanism Suggested Based on Electrochemical Analysis and SVET for Uncoated Tinplate and Post Coated With a Hybrid Film
Precision restoration: a necessary approach to foster forest recovery in the 21st century
We thank S. Tabik, E. Guirado, and Garnata Drone SL for fruitful debates about the application of remote sensing and artificial intelligence in restoration. E. McKeown looked over the English version of the manuscript. Original drawings were made by J. D. Guerrero. This work was supported by projects RESISTE (P18-RT-1927) from the Consejeria de Economia, Conocimiento, y Universidad from the Junta de Andalucia, and AVA201601.19 (NUTERA-DE I), DETECTOR (A-RNM-256-UGR18), and AVA2019.004 (NUTERA-DE II), cofinanced (80%) by the FEDER Program. F.M.-R. acknowledges the support of the Agreement 4580 between OTRI-UGR and the city council of La Zubia. We thank an anonymous reviewer for helpful comments that improved the manuscript.Forest restoration is currently a primary objective in environmental management policies at a global scale, to the extent that
impressive initiatives and commitments have been launched to plant billions of trees. However, resources are limited and the
success of any restoration effort should be maximized. Thus, restoration programs should seek to guarantee that what is
planted today will become an adult tree in the future, a simple fact that, however, usually receives little attention. Here, we advocate
for the need to focus restoration efforts on an individual plant level to increase establishment success while reducing negative
side effects by using an approach that we term âprecision forest restorationâ (PFR). The objective of PFR will be to ensure
that planted seedlings or sowed seeds will become adult trees with the appropriate landscape configuration to create functional
and self-regulating forest ecosystems while reducing the negative impacts of traditional massive reforestation actions. PFR can
take advantage of ecological knowledge together with technologies and methodologies from the landscape scale to the individual-
plant scale, and from the more traditional, low-tech approaches to the latest high-tech ones. PFR may be more expensive at
the level of individual plants, but will be more cost-effective in the long term if it allows for the creation of resilient forests able to
providemultiple ecosystemservices. PFR was not feasible a few years ago due to the high cost and low precision of the available
technologies, but it is currently an alternative that might reformulate a wide spectrum of ecosystem restoration activities.Junta de Andalucia P18-RT-1927European Commission AVA201601.19
A-RNM-256-UGR18
AVA2019.004OTRI-UGR 4580city council of La Zubia 458
Root growth and crop performance of soybean under chemical, physical, and biological changes after subsoiling.
Chemical, physical and biological soil attributes can facilitate soybean root growth in greater volume and depth in the soil, which can minimize yield reduction caused by water deficit. Soil management can contribute positively or negatively to these soil attributes. The aim of this work was to evaluate the root growth and crop performance of soybean, in response to chemical, physical and biological changes after subsoiling at different depths. At the R5 phenological stage, trenches were made for sampling and soil collection for chemical, physical and biological analysis and root growth was carried out. At V5, V7, R2 and R5 stages, plants were collected to evaluate height, leaf area and dry mass. At V5, stage number and dry mass of the nodules were evaluated. Subsoiling increased pH and Ca, and decreased Al in the soil, resulted in higher relative density and did not affect in mechanical penetration resistance compared to non-subsoiled soil. Basal respiration and soybean nodulation were higher in the subsoiled soil. Up to 15 cm depth, there were 87.91% of the total root dry mass and 78.79% of the total root volume. Initial and final plant growth were the same in subsoiled and non-subsoiled soil. Number of nodules in the subsoiled soil was 28% higher than in the non-subsoiled soil. Under these study conditions, subsoiling provides lower root growth but benefits grain yield
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