The impact of trust and power on knowledge sharing in design projects: some empirical evidence from the aerospace industry

It is acknowledged by aerospace engineers that relationships between partners are influenced by topics such as trust and that they enable or inhibit knowledge flow. This paper presents findings from interviews with engineers in the aerospace industry on how trust and power within supply chain teams impact knowledge sharing and integration. From a trust perspective, the results of the paper indicate that individually, engineers are aware of its importance but that there is little organisational awareness and consequently no framework or support exists for managing it. With regards to power, we show that there are positive as well as negative impacts on knowledge sharing to be considered

A conceptual model and illustrative research framework for inter-organizational innovation

Purpose – The purpose of this paper is to develop an integrated model, which incorporates the influence of different dimensions of power on various sub-components of continuous innovation in inter-firm networks using the product development process (PDP) as the unit of analysis. Design/methodology/approach – A theoretical framework is developed initially. The theoretical framework is supported by two illustrative examples from the aerospace industry. Semi-structured interviews, observation and template analysis are proposed as suitable data collection and analysis methods. Findings – The paper offers a view on how the PDP is facilitated and/or constrained due to this interweavement. The paper offers five tentative initial templates surrounding the themes discussed. Research limitations/implications – The conceptual framework is still in its nascent stage and requires substantial empirical work. As the relationships between power and knowledge in inter-firm networks are currently under-researched it might be worthwhile considering a qualitative approach to widen our understanding of the interrelationships of the concepts before embarking on a quantitative research endeavour. Originality/value – This paper provides a conceptual model of how four dimensions of power influence the integration of sub-components of continuous innovation throughout the high-phased stage-gate process in an inter-firm network

Acute-Contact and Chronic-Systemic In Vivo Bioassays: Regional Monitoring of Susceptibility to Thiamethoxam in Soybean Aphid (Hemiptera: Aphididae) Populations From the North Central United States

The risks associated with soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), in the North Central soybean systems has fostered the adoption of prophylactic chemical control practices, such as planting seeds treated with neonicotinoid insecticides, especially thiamethoxam. Consequently, there is a concern that increased selection pressure imposed on the arthropod–pest complex by this insecticide may lead to resistance. Therefore, in vivo bioassays were conducted to determine the susceptibility of soybean aphid to thiamethoxam among North Central U.S. populations. Concentration-mortality data were collected using contact glass-vial and detached-leaf systemic bioassays. The results of these experiments indicate that both bioassays were reliable to detect shifts in susceptibility between different soybean aphid clones. The LC50s of field populations of soybean aphid were significantly different when mortality was recorded in contact and systemic exposure assays. Nevertheless, the magnitude of the resistance ratios was consistent in both methods. In addition, a significant increase in the LC50 and EC50 values was observed among field populations tested in detached-leaf systemic bioassays. These results represent the first extensive efforts to identify the variability in susceptibility of soybean aphid to thiamethoxam in the North Central United States Therefore, our results provide a baseline for future assessment and contribute to a better understanding of the applicability of in vivo bioassays for susceptibility monitoring and resistance detection of soybean aphid to thiamethoxam

Acute-Contact and Chronic-Systemic In Vivo Bioassays: Regional Monitoring of Susceptibility to Thiamethoxam in Soybean Aphid (Hemiptera: Aphididae) Populations From the North Central United States

The risks associated with soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), in the North Central soybean systems has fostered the adoption of prophylactic chemical control practices, such as planting seeds treated with neonicotinoid insecticides, especially thiamethoxam. Consequently, there is a concern that increased selection pressure imposed on the arthropod–pest complex by this insecticide may lead to resistance. Therefore, in vivo bioassays were conducted to determine the susceptibility of soybean aphid to thiamethoxam among North Central U.S. populations. Concentration-mortality data were collected using contact glass-vial and detached-leaf systemic bioassays. The results of these experiments indicate that both bioassays were reliable to detect shifts in susceptibility between different soybean aphid clones. The LC50s of field populations of soybean aphid were significantly different when mortality was recorded in contact and systemic exposure assays. Nevertheless, the magnitude of the resistance ratios was consistent in both methods. In addition, a significant increase in the LC50 and EC50 values was observed among field populations tested in detached-leaf systemic bioassays. These results represent the first extensive efforts to identify the variability in susceptibility of soybean aphid to thiamethoxam in the North Central United States Therefore, our results provide a baseline for future assessment and contribute to a better understanding of the applicability of in vivo bioassays for susceptibility monitoring and resistance detection of soybean aphid to thiamethoxam

Determining Pentaquark Quantum Numbers from Strong Decays

Assuming that the recently observed $\Theta^+$ and $\Xi^{--}$ are members of an anti-decuplet of SU(3), decays to ground state baryons and mesons are calculated using an effective Lagrangian which incorporates chiral and SU(3) symmetry. We consider the possible quantum number assignments $J^\Pi ={1/2}^\pm,{3/2}^\pm$ and calculate ratios of partial widths. The branching ratios of exotic cascades can be used to discriminate between even and odd parity pentaquarks.Comment: 9 pages, references added, accepted for publication in PL

Exotic B_c-like molecules in QCD Sum Rules

We use the QCD sum rules to study possible $B_c$-like molecular states. We consider isoscalar $J^P = 0^+$ and $J^P = 1^+ D^{(\ast)}B^{(\ast)}$ molecular currents. We consider the contributions of condensates up to dimension eight and we work at leading order in ${\alpha}_s$ . We obtain for these states masses around 7 GeV.Comment: 7 pages, 6 figures. Accepted for publication in Physics Letters B. arXiv admin note: text overlap with arXiv:1110.211

TENDÊNCIAS E ALTERNATIVAS DA EDUCAÇÃO FÍSICA PARA O ENSINO MÉDIO

As constantes atividades envolvendo a educação física no meio escolarvêm possibilitando ainda mais a interação entre professores, alunos e oâmbito escolar. Como comum, a educação física tem em sua área deatuação uma possibilidade enorme de compactar atividades que envolvemas pessoas em participações conjuntas, atraindo a sociedade. Nocomponente curricular de Estágio Supervisionado II realizou-se um projetoabarcando a educação física e outras disciplinas na escola E.E.B. São Joséde Fraiburgo SC, realizando competição de carrinhos de rolimã, incluindocoordenação de curso junto com a direção da escola, professores; e adisciplina de educação física com atividades cooperativas, participativas,interativas, o jogo competitivo e socializado, práticas de socialização esaúde, e a disciplina de física com o estudo da força, atrito e velocidade. Oevento foi realizado fora do âmbito escolar abrangendo a comunidade comoutros participantes, segurança pública e familiares, pilares essenciais naconstrução da educação

Chiral soliton models, large N_c consistency and the Theta^+ exotic baryon

Predictions for a light collective $\Theta^+$ baryon state (with strangeness +1) based on the collective quantization of chiral soliton models are shown to be inconsistent with large $N_c$ QCD. The lightest strangeness +1 state to emerge from the analysis has an excitation energy which at large $N_c$ scales as $N_c^0$ while collective quantization is legitimate only for excitations which go to zero as $N_c \to \infty$. This inconsistency strongly suggests that predictions for $\Theta^+$ properties based on collective quantization of chiral solitons are not valid.Comment: 5 pages, 1 figure. This is the version to be published; minor typos have been corrected and a reference adde

A contamination-free electron-transparent metallic sample preparation method for MEMS experiments with in situ S/TEM

Microelectromechanical systems (MEMS) are currently supporting ground-breaking basic research in materials science and metallurgy as they allow in situ experiments on materials at the nanoscale within electron-microscopes in a wide variety of different conditions such as extreme materials dynamics under ultrafast heating and quenching rates as well as in complex electro-chemical environments. Electron-transparent sample preparation for MEMS e-chips remains a challenge for this technology as the existing methodologies can introduce contaminants, thus disrupting the experiments and the analysis of results. Herein we introduce a methodology for simple and fast electron-transparent sample preparation for MEMS e-chips without significant contamination. The quality of the samples as well as their performance during a MEMS e-chip experiment in situ within an electron-microscope are evaluated during a heat treatment of a crossover AlMgZn(Cu) alloy.Comment: Preprint submitted to Microscopy and Microanalysi