An adaptive bayebsian solution to the control peoble1 for linear control systems

In this paper, a Bayesian procedure to solve the control problem in Linear Control Systems , when the precision Matrices of the obstsrvaiional and systems errors are unknown, is proposed. Prior information on those matrices is required, A numerical example illustrates the procedure applied to models Which contain bivariate observations and bivariate state vectors.     

From a culture of homeownership to generation rent: housing discourses of young adults in Spain

Across many advanced economies, changing housing dynamics have destabilized traditional adulthood transitions. This article examines how such transformations, especially in the aftermath of the economic crisis, affect fundamental societal expectations and aspirations surrounding tenure choices and home leaving. Through a series of discussion groups and interviews among young adults in Spain – a salient context of embedded homeownership culture – the study reveals how the crisis has undermined life-course transitions and upended discourses surrounding tenure norms. Homeownership has transformed from a dominant symbol of stability and security to one of dispossession and financial risk. Conversely, where pre-crisis discourses dismissed rental, the tenure is portrayed as providing more security in the face of necessary flexibility. Our research reveals that, although traditional ‘homeownership culture’ has not disappeared from the collective imaginary and appears nuanced by social class, it has become increasingly detached from leaving the parental home. The paper exposes the extent to which dominant housing discourses may be upended even within the context of a particularly embedded Southern European homeowner society. We contend that when housing dynamics are coupled with underlying transformations in aspirations and norms, there may be significant societal outcomes.     

Sex-dependent associations between daily physical activity and leg exercise blood pressure responses

The authors examined interindividual and sex-specific variation in systolic (SBP) and diastolic (DBP) blood pressure responses to graded leg-extension exercise in healthy older (60-78 yr) women (n = 21) and men (n = 19). Maximal oxygen uptake (VO2max), body composition, physical activity (accelerometry), and vascular function were measured to identify predictors of exercise BP. Neither VO2max nor activity counts were associated with the rise in SBP or DBP during exercise in men. The strongest predictors of these responses in men were age (SBP: r2 = .19, p = .05) and peak exercise leg vasodilation (DBP: r2 = -.21, p < .05). In women, the modest relationship observed between VO2max and exercise BP was abolished after adjusting for central adiposity and activity counts (best predictors, cumulative r2 = .53, p < .05, for both SBP and DBP). These results suggest that determinants of variation in submaximal exercise BP responses among older adults are sex specific, with daily physical activity influencing these responses in women but not men.     

The Multisectoral Trilemma of Network Management

This article presents an analysis of different network coordinationstrategies. The article extends network management scholarshipby integrating sector-based differences within a theoreticalframework encompassing extant conceptions of network management.Even as the emergent field of network management scholarshipadvances, current research tends to generalize network managementapproaches based on assumptions that organizations behave similarlywithin a network regardless of whether the organizations aregovernmental, nonprofit, or commercial. Consequently, existingresearch does not fully account for whether sector-based differenceshave implications for network management. This article providesevidence that sector-based differences within a network matterbecause the differences provide strategic opportunities andconstraints for managers involved in coordinating mixed-sectornetworks. This article makes several contributions to networkmanagement scholarship. First, this article provides a frameworkthat reviews and situates current conceptions about networkcoordination within a passive-to-active continuum of managerialapproaches. Sectoral differences are situated and integratedwithin this framework. Second, this article provides an empiricallybased investigation of a quasi-natural experiment that examinessector-based differences in mixed-sector workforce developmentnetworks in Boston. The article's findings suggest that integratingsector-based orientations within a passive-to-active networkmanagerial continuum helps clarify and categorize the strategicoptions and trade-offs that managers may consider in coordinatingmultisectoral networks.     

Bayesian forecasting for AR(1) models with normal coefficients

This paper presents a Bayesian solution to the problem of time series forecasting, for the case in which the generating process is an autoregressive of order one, with a normal random coefficient. The proposed procedure is based on the predictive density of the future observation. Conjugate priors are used for some parameters, while improper vague priors are used for others.     

The moderating effects of corporate and national factors on lean projects barriers: a cross‐national study

Abstract

Despite companies’ efforts to develop lean thinking in their industrial context, the implementation of many lean projects has not been consistently successful, often resulting in delay, failure, abandonment or rejection. Whereas some authors emphasised that company characteristics, like the product demand profile, are significant factors in lean projects, other studies analysed the impact of national culture. This paper aims to study the combined effect of various factors related to national culture and company characteristics of lean implementation barriers in order to determine whether the environmental context in which the company operation can affect the outcome of lean project implementation. A survey has been conducted to collect information about companies of various sizes (small–medium–large) in all industry fields. Data from companies, including manufacturing firms, in 23 different countries, were analysed in depth by a combination of Association Rules and Network Analysis. The results show that some national culture dimensions, such as Performance Orientation and Gender Egalitarianism, influence lean management success and help to maintain a lean culture. Maintaining a lean culture is even more critical than developing it. Furthermore, if the implementation of lean practices is an arduous task for large organisations, it becomes even greater for SMEs. Other cultural factors of individuals such as Uncertainty Avoidance, Future Orientation and Institutional Collectivism also help to support a lean culture and overcome human and cultural barriers.