An energy budget agent-based model of earthworm populations and its application to study the effects of pesticides

Earthworms are important organisms in soil communities and so are used as model organisms in environmental risk assessments of chemicals. However current risk assessments of soil invertebrates are based on short-term laboratory studies, of limited ecological relevance, supplemented if necessary by site-specific field trials, which sometimes are challenging to apply across the whole agricultural landscape. Here, we investigate whether population responses to environmental stressors and pesticide exposure can be accurately predicted by combining energy budget and agent-based models (ABMs), based on knowledge of how individuals respond to their local circumstances. A simple energy budget model was implemented within each earthworm Eisenia fetida in the ABM, based on a priori parameter estimates. From broadly accepted physiological principles, simple algorithms specify how energy acquisition and expenditure drive life cycle processes. Each individual allocates energy between maintenance, growth and/or reproduction under varying conditions of food density, soil temperature and soil moisture. When simulating published experiments, good model fits were obtained to experimental data on individual growth, reproduction and starvation. Using the energy budget model as a platform we developed methods to identify which of the physiological parameters in the energy budget model (rates of ingestion, maintenance, growth or reproduction) are primarily affected by pesticide applications, producing four hypotheses about how toxicity acts. We tested these hypotheses by comparing model outputs with published toxicity data on the effects of copper oxychloride and chlorpyrifos on E. fetida. Both growth and reproduction were directly affected in experiments in which sufficient food was provided, whilst maintenance was targeted under food limitation. Although we only incorporate toxic effects at the individual level we show how ABMs can readily extrapolate to larger scales by providing good model fits to field population data. The ability of the presented model to fit the available field and laboratory data for E. fetida demonstrates the promise of the agent-based approach in ecology, by showing how biological knowledge can be used to make ecological inferences. Further work is required to extend the approach to populations of more ecologically relevant species studied at the field scale. Such a model could help extrapolate from laboratory to field conditions and from one set of field conditions to another or from species to species.

Allocating community-level payments for ecosystem services initial experiences from a REDD pilot in Tanzania

Payments for ecosystem services (PES) typically reward landowners for managing their land to provide ecosystem services that would not otherwise be provided. REDD—Reduced Emissions from Deforestation and Forest Degradation—is a form of PES aimed at decreasing carbon emissions from forest conversion and extraction in lower-income countries. A key challenge for REDD occurs when it is implemented at the community rather than the individual landowner level. Whilst achieving this community-level reduction relies on individuals changing their interaction with the forest, incentives are not aligned explicitly at the individual level. Rather, payments are made to the community as a single entity in exchange for verified reduced forest loss, as per a PES scheme. In this paper, we explore how community level REDD has been implemented in one multiple-village pilot in Tanzania. Our findings suggest that considerable attention has been paid to monitoring, reporting, verification, and equity. Though no explicit mechanism ensures individual compliance with the group PES, the development of village level institutions, “social fencing,” and a shared future through equal REDD payments factor into community decisions that influence the level of community compliance that the program will eventually achieve. However, few villages allocate funds for explicit enforcement efforts to protect the forest from illegal activities undertaken by outsiders.

The nested assembly of individual-resource networks

P>1. Much of the current understanding of ecological systems is based on theory that does not explicitly take into account individual variation within natural populations. However, individuals may show substantial variation in resource use. This variation in turn may be translated into topological properties of networks that depict interactions among individuals and the food resources they consume (individual-resource networks). 2. Different models derived from optimal diet theory (ODT) predict highly distinct patterns of trophic interactions at the individual level that should translate into distinct network topologies. As a consequence, individual-resource networks can be useful tools in revealing the incidence of different patterns of resource use by individuals and suggesting their mechanistic basis. 3. In the present study, using data from several dietary studies, we assembled individual-resource networks of 10 vertebrate species, previously reported to show interindividual diet variation, and used a network-based approach to investigate their structure. 4. We found significant nestedness, but no modularity, in all empirical networks, indicating that (i) these populations are composed of both opportunistic and selective individuals and (ii) the diets of the latter are ordered as predictable subsets of the diets of the more opportunistic individuals. 5. Nested patterns are a common feature of species networks, and our results extend its generality to trophic interactions at the individual level. This pattern is consistent with a recently proposed ODT model, in which individuals show similar rank preferences but differ in their acceptance rate for alternative resources. Our findings therefore suggest a common mechanism underlying interindividual variation in resource use in disparate taxa.

EXPLOITING A GENERIC APPROACH TO CONSTRUCT COMPONENT-BASED SYSTEMS SOFTWARE IN LINUX ENVIRONMENTS

Component-based software engineering has recently emerged as a promising solution to the development of system-level software. Unfortunately, current approaches are limited to specific platforms and domains. This lack of generality is particularly problematic as it prevents knowledge sharing and generally drives development costs up. In the past, we have developed a generic approach to component-based software engineering for system-level software called OpenCom. In this paper, we present OpenComL an instantiation of OpenCom to Linux environments and show how it can be profiled to meet a range of system-level software in Linux environments. For this, we demonstrate its application to constructing a programmable router platform and a middleware for parallel environments.

Barnmorskors erfarenheter av preventivmedelsrådgivning på ungdomsmottagning : - En intervjustudie

Bakgrund: Barnmorskans arbetsfält omfattar idag sexuell-, reproduktiv- och perinatal hälsa och det centrala i yrkesutövningen är att främja hälsa. Barnmorskan ska ha kunskaper om, kunna ge information och undervisa om sexualitet och samlevnad utifrån ett genus- och livscykelperspektiv. Uppdraget på ungdomsmottagning är att arbeta med sexualitet och hälsa samt att förebygga oönskade graviditeter och STI. Syfte: Syftet var att beskriva barnmorskors erfarenheter av preventivmedelsrådgivning på ungdomsmottagning. Metod: Individuella intervjuer genomfordes med nio barnmorskor på ungdomsmottagningar. Vid intervjutillfället användes en frågeguide och semistrukturerade frågor ställdes. Som analysmetod användes kvalitativ innehållsanalys. Resultat: Fyra kategorier och 15 subkategorier identifierades. Kategorierna var enligt följande: Erfarenheten och kunskapens betydelse, Det kliniska arbetssättet, Modererande faktorer och Utmaningar. Slutsats: Barnmorskor uppgav god kunskap och goda erfarenheter av ungdomar och preventivmedelsrådgivning på ungdomsmottagning men menade att det är ett dynamiskt arbete som bidrar till ständig utveckling. Vid möten med preventivmedelssökande ungdomar på ungdomsmottagning fanns önskan att mötet skulle ske på individnivå. Erfarenheter av modererande faktorer för barnmorskan, utmaningar för preventivmedelsrådgivningen och följsamheten fanns vilket innebar att preventivmedelsrådgivning för ungdomar på ungdomsmottagning är komplext. Klinisk tillämpbarhet: Studiens resultat skulle kunna innebära ökad förståelse för arbetet på ungdomsmottagning och skapa underlag för att möta utmaningarna som barnmorskorna möter i det dagliga arbetet.

Allocation of authority in franchise chains

This article investigates the level of delegation in franchise chains, distinguishing the two most relevant franchising models: Business Format Franchising and Learning Network Franchising. The two models basically differ on the level of real authority (effective control over decisions) exercised by the franchisors. Differences in business features, such as the required standardization, monitoring costs and consumer sensitivity to variations in product attributes (consumer measurement costs), explain the adoption of the different models of franchising. These variables affect the trade-off between the risk of brand name loss and the gains in knowledge sharing and learning within the network. The higher the need for standardization, the higher is the risk of brand name loss, and, consequently, the more likely the franchisor will adopt an organizational design that confers more control over franchisees’ decisions, such as business format franchising. This paper presents two case studies with Brazilian food franchise chains that illustrate the main argument and suggest additional propositions. Moreover, an empirical analysis of 223 franchise chains provides additional support to the hypothesis of a negative the effect of required standardization on the level of delegation.

Gestão do conhecimento: os desafios da implantação de um modelo integrado : o caso ANS

A Gestão do Conhecimento vem adquirindo uma importância notória dentro das organizações, tanto públicas quanto privadas. Suas características e aplicações permeiam as discussões acadêmicas e atingem, de forma reflexiva e inovadora, as práticas de trabalho. Seu foco está na elaboração de processos sistemáticos de captura, organização e armazenamento, análise e compartilhamento do conhecimento organizacional (individual e coletivo) voltados à criação de novos conhecimentos, novos produtos, ou novos processos de trabalho. Pretende-se com este estudo levantar os desafios à implantação de um modelo de Gestão do Conhecimento na Agência Nacional de Saúde Suplementar (ANS), tendo como base o discurso dos principais responsáveis por criar estratégias neste sentido e por conceder os instrumentos necessários à sua implementação. Com fundamento na literatura científica sobre o tema, faz-se uma revisão conceitual de conhecimento e de Gestão do Conhecimento, buscando explicitar suas dimensões que passam pela transversalidade do conhecimento, pela aprendizagem individual e organizacional, pelo compartilhamento do conhecimento e pelos sistemas de informação. Como metodologia, optou-se por realizar uma pesquisa qualitativa do tipo explicativa, desenvolvida por meio de estudo de caso, de forma a aprofundar o entendimento da realidade investigada. Os resultados das entrevistas e da análise documental possibilitaram verificar que a ANS tem adotado algumas práticas isoladas associadas à Gestão do Conhecimento. Constatou-se, no discurso, que existe uma predisposição dos gestores de conseguir maior efetividade em suas ações relativas ao compartilhamento do conhecimento e à implantação de um modelo de Gestão do Conhecimento na ANS. A pesquisa, contudo, revelou uma desarticulação institucional ocasionada por cultura hierarquizada e fragmentada, que se mostra profundamente desfavorável à um ambiente de criação e compartilhamento do conhecimento.

A relação entre confiança interpessoal e compartilhamento de conhecimento tácito

Empresas de negócios, que são constantemente pressionados por inovação, têm na criação de conhecimento organizacional a base para a estratégia de sobrevivência. Muito desse conhecimento acumulado é tácito, encarnado em indivíduos e incorporado pela organização, e que é de difícil articulação. A necessária justificativa de um novo conhecimento torna a sua criação um processo muito frágil. Indivíduos podem sentir-se ameaçados em compartilhar insights, intuição, novas ideias, know-how, habilidades específicas, diante de devastadores mecanismos de controle social como ridículo, difamação e opróbrio, ou pela possibilidade de mau uso de um conhecimento útil e valioso. Por outro lado, com a criança logo ao nascer, e derivado do narcisismo primário, emerge a confiança básica que acompanha o indivíduo ao longo de sua existência, e que, portanto, pode levá-lo a compartilhar seus achados. Esta pesquisa, um ensaio teórico, explorou a relação entre a confiança e compartilhamento de conhecimento tácito nas organizações. Com abordagem multidisciplinar, aderente ao pensamento complexo, incorporou referenciais teóricos advindos de trabalhos de neo-schumpeterianos (Teoria Evolucionária), da sociologia e da psicologia. O percurso metodológico contemplou a busca de artigos em base de dados, leitura de resumos de artigos, busca de autores consagrados na literatura, consulta de autores referenciados nos artigos, leitura e análise de trabalhos selecionados. Mediante análise de conteúdo, que busca identificar o que está sendo dito a respeito do tema, foram criadas as seguintes categorias de análise: inovação, poder, teoria de criação de conhecimento organizacional e confiança humana. Cada uma dessas categorias compôs um capítulo desta dissertação. Embora a escassez de pesquisas empíricas relacionadas ao tema, a análise de conteúdo dos artigos examinados permitiram concluir que a confiança interpessoal mantém relação de poder simétrico entre indivíduos e assim é capaz de acessar o conhecimento tácito enraizado na mente de indivíduos. Dessa forma, com a pesquisa aqui apresentada, espera-se ter contribuído para a literatura e práticas organizacionais relacionadas à gestão de conhecimento. Por fim, foram relatadas limitações no trabalho e sugestões para futuras pesquisas.

Tear identitário:a prática docente em arte como conhecimento compartilhado

This investigative tissue is about the formation of identification processes of teachers and pedagogical practice of Art, in Teresina city. This search comprised the sum of the needs presented, agreed upon with the teachers engaged in the process, it was developed through the establishment of interactive environment Loom Team where collaboration and critical reflection were steering actions to promote the understanding of existing connections or relations within the processes of identifications and the pedagogical practice of Art. The tissue is formed by the polyphonic plot of the critical reflection of nine teachers of Art who engaged voluntarily and this investigation of formative nature and a production of knowledge. All these teachers have degree and the course of artistic education and especial qualification in Fine Arts and/or Drawing. The texture, which we denominated Identification Loom: The pedagogical practice of Art as share knowledge is (de) (re) construction of knowledge resulting from the critical reflection, in an environment of collaboration, which may have implications and ethical political attitudes in the pedagogical practice of the group. Within this context, we pose the following question: - How does the pedagogical practice in Art influence and/or be influenced by the identification processes of the teachers, and how do they interfere with the search and manifestation of the knowledge involved and the investment in professionalization? In view of this query, we make use of the cooperative investigation, having social history as theoretical reference and as analytic perspective of interactive and dialogical-reflexive processes. Thus, social historic theory, cooperative approach and pedagogical practice were the major components of the plot. The methodological texture counted on the threads of dialogical reflexion, of mediation and of collaboration. The conceptual formulation, the recording in videos of classes and the narratives of formations were the main threads of the analytic substrate of the investigation. With this articulation, theses threads appear as developers of processes leading to a major approximation of the thought on the identity/alterity dialectical pair of the participants involved. The language within this plot had a decisive importance in all the moments of the search of signification, embracing and connecting the identification/alterative processes, the pedagogical practice of Art and the knowledge shared. In such processes involving (de) (re) construction, one can notice a close correlation of the triad social identity, pedagogical practice and knowledge shared. For this reason, the vigotskian, guetmanovian and kopnian theoretizations were the major framework for the analysis of conceptual formulations; and, as for discourse analysis, Baktin and Orlandi were our masters. For these teachers, the experience shared throughout the process of this typology of tri-axial investigation focused the experience of many theoretical and practical assumptions. Such an experience enabled them to state that this, with collaboration, can make reflection on the practice a starting and promoting element, within the individual level of self-management, in addition to being a space of (de)(re)construction of meanings, of knowledge and of reinvention per se

Desenvolvimento de um modelo de gestão do conhecimento para a melhoria do processo de desenvolvimento de produtos

The knowledge management has received major attention from product designers because many of the activities within this process have to be creative and, therefore, they depend basically on the knowledge of the people who are involved in the process. Moreover, Product Development Process (PDP) is one of the activities in which knowledge management manifests in the most critical form once it had the intense application of the knowledge. As a consequence, this thesis analyzes the knowledge management aiming to improve the PDP and it also proposes a theoretical model of knowledge management. This model uses five steps (creation, maintenance, dissemination, utilization and discard) through the verification of the occurrence of four types of knowledge conversion (socialization, externalization, combination and internalization) that it will improve the knowledge management in this process. The intellectual capital in Small and Medium Enterprises (SMEs) managed efficiently and with the participation of all employees has become the mechanism of the creation and transference processes of knowledge, supporting and, consequently, improving the PDP. The expected results are an effective and efficient application of the proposed model for the creation of the knowledge base within an organization (organizational memory) aiming a better performance of the PDP. In this way, it was carried out an extensive analysis of the knowledge management (instrument of qualitative and subjective evaluation) within the Design department of a Brazilian company (SEBRAE/RN). This analysis aimed to know the state-of-the-art of the Design department regarding the use of knowledge management. This step was important in order to evaluate in the level of the evolution of the department related to the practical use of knowledge management before implementing the proposed theoretical model and its methodology. At the end of this work, based on the results of the diagnosis, a knowledge management system is suggested to facilitate the knowledge sharing within the organization, in order words, the Design department

Qualidade em serviços de saúde: uma contribuição à definição de um modelo paramétrico e padrão de qualidade do tempo agendado para consulta ambulatorial

The knowledge management has received major attention from product designers because many of the activities within this process have to be creative and, therefore, they depend basically on the knowledge of the people who are involved in the process. Moreover, Product Development Process (PDP) is one of the activities in which knowledge management manifests in the most critical form once it had the intense application of the knowledge. As a consequence, this thesis analyzes the knowledge management aiming to improve the PDP and it also proposes a theoretical model of knowledge management. This model uses five steps (creation, maintenance, dissemination, utilization and discard) through the verification of the occurrence of four types of knowledge conversion (socialization, externalization, combination and internalization) that it will improve the knowledge management in this process. The intellectual capital in Small and Medium Enterprises (SMEs) managed efficiently and with the participation of all employees has become the mechanism of the creation and transference processes of knowledge, supporting and, consequently, improving the PDP. The expected results are an effective and efficient application of the proposed model for the creation of the knowledge base within an organization (organizational memory) aiming a better performance of the PDP. In this way, it was carried out an extensive analysis of the knowledge management (instrument of qualitative and subjective evaluation) within the Design department of a Brazilian company (SEBRAE/RN). This analysis aimed to know the state-of-the-art of the Design department regarding the use of knowledge management. This step was important in order to evaluate in the level of the evolution of the department related to the practical use of knowledge management before implementing the proposed theoretical model and its methodology. At the end of this work, based on the results of the diagnosis, a knowledge management system is suggested to facilitate the knowledge sharing within the organization, in order words, the Design department

Cooperação em sagüis comuns callithrix jacchus: condições e restrições

The cooperative behavior is no longer a dilemma for the theory of evolution, since there are models that explain the evolution of this behavior by means of natural selection at the individual level. However, there have been few studies on the proximal factors that interfere with cooperative behavior. In the study of the influence of cognition on cooperation, many authors have been interested in situations in which individuals decide whether to act cooperatively and select partners with different qualities to cooperate. Of the factors studied, we highlight the need for understanding the apparatus and communication between partners to the occurrence of cooperation. Recently, highlight is the proposal that the ability to cooperate would be greater in species with cooperative breeding system. Thus, the common marmoset (Callithrix jacchus) is a New World monkey which stands as a valuable species for this type of study because it presents cooperative actions in nature, such as sharing food and protection of the community territory. Our experiment investigated whether common marmosets unrelated females (n = 6) were able to cooperate using an electrical and a mechanical apparatus, if this cooperation is a byproduct of individual actions or involve social attention, if it occurs inter-individual variation in the use of devices and formation of roles (producer / scrounger) in dyads. We use the number of rewards obtained by animals (Ratio of Correct Pulls) as indicators of cooperation and glances for partners (Ratio of Correct Glances) as indicators of social attention and communication. The results indicate that the type of apparatus was not a constraint for the occurrence of cooperation between the marmosets, but still has not been verified formation of roles in the dyads. The performance of animals in the two devices showed a large variation in the learning time, not having relationship with the performance in the tests phase. In both devices the level of social glances at control phases were casually correlated with any other phase, but the data showed that there was not social attention, that is, the monkeys realized that they gave food to the partners, but the partners did

Knowledge-based integrated production management model

Purpose - This paper aims to propose a model of production management that integrates knowledge management, as a third dimension, to the production and work dimensions and to identify factors that promote a favorable context for knowledge sharing and results achievement in the production operations shop floor environment.Design/methodology/approach - The model proposed is built from opportunities identified in the literature review.Findings - The factors in the model integrate its three main components: knowledge management, production organization and work organization, providing a representation of the dynamics of the workplace and shop floor environment.Practical implications - The proposed model and its factors allow managers to better understand and to improve the organization activities, because it integrates knowledge management with the production organization and work organization components of traditional models.Originality/value - Literature acknowledges the role of knowledge as competitive advantage, but it is still dealt in an implicit way within the traditional models of production management. This paper proposes a model and factors that provide a favorable context for tacit knowledge sharing and results achievement in the production operations shop floor environment. The model explicitly integrates knowledge management with traditional models' components.

How the interplay between individual spatial memory and landscape persistence can generate population distribution patterns

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Geoprocessamento para identificar padrões do perfil de nascimentos na região do Vale do Paraíba

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)