Rapid Sensor Technology: A Risk and System Complexity Analyses of Early Detection of Influenza-Like-Illnesses

The development of effective and reliable methods to defend the nation against biological terrorism remains an urgent challenge to researchers in the areas of risk, bio-defense, public health, and emergency medicine. The emerging threat of the avian flu pandemic also highlights the unpreparedness of our nation\u27s health care system to meet a highly contagious and infectious disease outbreak. The implementation of a rapid sensor technology for early detection of influenza-like-illness provides possible opportunities, as well as problems. Bounding and defining such a complex problem is one of the first challenges this research addresses. Approaching this problem from various perspectives such as risk management, critical infrastructures and emergency medicine proves to be a valid strategy for an efficient solution. After defining the problem and laying out a strategy, discussions on possible tools and techniques for the solution of the problem is presented in this paper, together with the compounding sources of and issues with complexity

Foliations with persistent singularities

Let ω be a differential q-form defining a foliation of codimension q in a projective variety. In this article we study the singular locus of ω in various settings. We relate a certain type of singularities, which we name persistent, with the unfoldings of ω, generalizing previous work done on foliations of codimension 1 in projective space. We also relate the absence of persistent singularities with the existence of a connection in the sheaf of 1-forms defining the foliation.Fil: Massri, Cesar Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Investigaciones Matemáticas "Luis A. Santaló". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Matemáticas "Luis A. Santaló"; ArgentinaFil: Molinuevo, Ariel. Universidade Federal do Rio de Janeiro; BrasilFil: Quallbrunn, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Goal Approach to Risk Scenario Identification in Systems Development

The scope of this paper is the exploration of fundamental issues in identifying risk scenarios during systems development. Systems development refers to a series of processes which span conceptualization, designing the architecture, obtaining the elements, and eventually integrating all these elements into the fully developed final system. For truly sustainable and green systems, identifying risk scenarios early and continuously over the system development processes is vital. This paper contains various descriptions of risk from the project (i.e. programmatic) and technical perspectives, an exploration of the generally accepted risk management process, and how these relate to systems development through system goals. The paper shows the importance of goal and anti-goal analyses in the early identification of risk scenarios towards the development of truly sustainable systems. This result is critical for engineering managers and systems engineers who want to make risk management an integral part of the systems development process

The Kupka Scheme and Unfoldings

Let ω be a differential 1-form defining an algebraic foliation of codimension 1 in projective space. In this article we use commutative algebra to study the singular locus of ω through its ideal of definition. Then, we expose the relation between the ideal defining the Kupka components of the singular set of ω and the first order unfoldings of ω. Exploiting this relation, we show that the set of Kupka points of ω is generically not empty. As an application of these results, we can compute the ideal of first order unfoldings for some known components of the space of foliations.Fil: Massri, Cesar Dario. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Molinuevo, Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Matemática; ArgentinaFil: Quallbrunn, Federico. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Diferenças nas atribuições causais do desempenho acadêmico em alunos dos anos finais do fundamental e ensino médio com dificuldades de aprendizagem, em função do tipo de dificuldade e de sua participação em outras atividades gratificantes

This study analyses causal attributions in secondary school students and whether these attributions vary according to the type of difficulty, as well as to success in other areas of personal performance. Patterns of causal attributions and their relation to academic performance and to participation in sports and artistic activities, were assessed on a sample of 371 students aged 13 to 16, of whom 67 were diagnosed with learning difficulties. Results show that the greater the difficulty, the greater the attribution in considering effort as the main cause for achieving success in their learning process; no differences were found by the type of difficulty. Likewise, findings indicate that when students with learning difficulties feel competent in non-academic areas, they can develop better predisposition to achievement. This could have an impact on their ability to cope with learning, their perception of competence and self-regulation processes.Este estudio analiza las atribuciones causales en alumnos de educación secundaria y si estas atribuciones varían de acuerdo con el tipo de dificultad, así como al éxito o no en otras áreas de desempeño personal. A partir de una muestra de 371 alumnos entre 13 y 16 años, 67 de ellos con diagnóstico de dificultades de aprendizaje, se evaluaron los patrones de atribuciones causales y su relación con el rendimiento académico, como con su participación en actividades deportivas y artísticas. Los resultados muestran que a mayor dificultad mayor la atribución en considerar el esfuerzo como causa principal para alcanzar éxitos en su proceso de aprendizaje; no encontrándose diferencia en función del tipo de dificultad. Asimismo, cuando los alumnos con dificultades en el aprendizaje se sienten competentes en áreas no académicas, pueden desarrollar una mejor predisposición al logro. Esto impactaría en sus capacidades para enfrentar los aprendizajes, su percepción de competencia y procesos de autorregulación.Este estudo analisa as atribuições causais em alunos dos anos finais do fundamental e ensino médio e se estas atribuições variam de acordo com o tipo de dificuldade, bem como o sucesso ou não em outras áreas de desempenho pessoal. A partir de uma amostra de 371 alunos entre 13 e 16 anos, 67 deles com diagnóstico de dificuldades de aprendizagem, se avaliaram os padrões de atribuições causais e sua relação com o desempenho acadêmico, bem como com sua participação em atividades esportivas e artísticas. Os resultados mostram que quanto maior a dificuldade, maior a atribuição do esforço como principal causa de sucesso em seu processo de aprendizagem; não foram encontradas diferenças de acordo com o tipo de dificuldade. Da mesma forma, quando os estudantes com dificuldades de aprendizagem se sentem competentes em áreas não acadêmicas, eles podem desenvolver uma melhor predisposição para o sucesso. Isto impactaria em sua capacidade para enfrentar a aprendizagem, sua percepção de competência e processos de autorregulamentação

Controlling open quantum systems using fast transitions

Unitary control and decoherence appear to be irreconcilable in quantum mechanics. When a quantum system interacts with an environment, control strategies usually fail due to decoherence. In this article we implement a time-optimal unitary control protocol suitable for quantum open systems. The method is based on successive diabatic and sudden switch transitions in the avoided crossings of the energy spectra of closed systems. We show that the speed of this control protocol meets the fundamental bounds imposed by the quantum speed limit, thus making this scheme ideal for application where decoherence needs to be avoided. We show that this method can achieve complex control strategies with high accuracy in quantum open systems.Fil: Poggi, Pablo Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; ArgentinaFil: Lombardo, Fernando Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; ArgentinaFil: Wisniacki, Diego Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentin

Significado que le atribuyen las madres, padres y/o cuidadores de niños y niñas de 0-6 años, a su participación en el centro de estimulación temprana LUCOCORI

Tesis (Kinesiólogo)Consideramos relevante generar reflexión y construir conocimiento desde nuestra disciplina en el área de la estimulación temprana (área donde el profesional Kinesiólogo tiene mucho que contribuir), en especial cuando este conocimiento ayuda a ampliar la mirada desde un enfoque rehabilitador centrado en el niño/a que presenta un rezago en el desarrollo psicomotor, a una mirada más ecológica de su entorno y de acompañamiento del desarrollo

Nutrient stocks, flows and balances for the Bolivian agri-food system: Can recycling human excreta close the nutrient circularity gap?

Analysis of the current state of nutrient stocks, flows, and balances of a territory is necessary to inform strategies that can transition the agri-food sector to a circular economy model. In this study, we quantified the nitrogen and phosphorus budgets for the Bolivian agri-food system at national and regional scales by way of agroecological zoning. We performed nutrient balances to calculate indicators for sufficiency (extent of nutrient deficit/surplus) and circularity (proportion of nutrients recirculated). We also evaluated the potential of renewable stocks (human excreta and livestock manure) to meet nutrient deficits in the system. Our results showed that there are apparent deficits of 32 kt N and 8 kt P in the system that cannot be accounted for using available data. We estimate the real deficits required to bring yields of 45 crops grown in Bolivia to parity with those of neighbouring countries to be 110 kt N and 33 kt P. About 44% of nitrogen and 74% of phosphorus is currently recirculated in the system, with the major nutrient inputs being biological nitrogen fixation, livestock manure, and crop residues. However, nutrient recycling is likely to decrease in the future because the national strategy to address nutrient deficits is to increase domestic production of synthetic fertilisers. Our analysis also shows that there is a sufficient stock of nutrients already available in human excreta (39 kt N and 5 kt P) to cover 100% of the nitrogen deficit and 64% of the phosphorus deficit. The low-altitude zone of Chiquitania-Pantanal alone accounts for 65% of cultivation and 80% of the nutrient demand in the country. Here, export-oriented crops like soybean and sorghum are grown, but less than 25% of the nitrogen is recirculated. In contrast, there are nutrient surpluses of 41 kt N and 34 kt P in agroecological zones like the Valleys and Altiplano where traditional agriculture is practiced, and the majority of food is grown for local consumption. Overall, we find that recycling of human excreta, combined with transfer of regional nutrient surpluses, could be an effective strategy to reduce the overall nutrient deficit in the system

Pressure-induced Shape-shifting of Helical Bacteria

Many bacterial species are helical in form, including the widespread pathogen H. pylori. Motivated by recent experiments on H. pylori showing that cell wall synthesis is not uniform, we investigate the possible formation of helical cell shape induced by elastic heterogeneity. We show, experimentally and theoretically, that helical morphogenesis can be produced by pressurizing an elastic cylindrical vessel with helical reinforced lines. The properties of the pressurized helix are highly dependent on the initial helical angle of the reinforced region. We find that steep angles result in crooked helices with, surprisingly, reduced end-to-end distance upon pressurization. This work helps to explain the possible mechanisms for the generation of helical cell morphologies and may inspire the design of novel pressure-controlled helical actuators

Agile Knowledge Management: A Review, Reconceptualization, and Extension to Military Applications

This study contributes to the literature by integrating agility in knowledge management (KM) operations, especially in military environments via major findings of (a) introducing a new approach to KM with integration of \u27agility\u27; (b) articulating the application of an enhanced process of Agile Knowledge Management (AKM) across the military. The purpose of the study is to explore the conceptual background of agility in KM, re-conceptualize it and extend it to military applications with a special focus on counterinsurgency (COIN). An initial qualitative exploration of agility in KM was performed. Three different concepts and their interrelationships were analyzed: (a) KM, (b) agility in operations, and (c) military organizations in the COIN environment. Findings from this initial qualitative analysis were used to inductively redefine, re-conceptualize, and extend the concept of AKM, as well as, to compare and adapt the AKM concept to the military environment of COIN. An additional qualitative analysis was performed to validate the extended concept of AKM. While this study is mainly focused on AKM in a dynamic multinational and joint military environment of COIN, conclusions may be applicable in a broader context. The results of this research can be used by engineering managers and KM practitioners and academics with particular focus on the military environment as foundation for (a) further research and development in AKM (b) developing customized AKM education programs and (c) extending the concept of AKM and its application to other environments