Reflexivity of the translation-dilation algebras on L^2(R)

The hyperbolic algebra A_h, studied recently by Katavolos and Power, is the weak star closed operator algebra on L^2(R) generated by H^\infty(R), as multiplication operators, and by the dilation operators V_t, t \geq 0, given by V_t f(x) = e^{t/2} f(e^t x). We show that A_h is a reflexive operator algebra and that the four dimensional manifold Lat A_h (with the natural topology) is the reflexive hull of a natural two dimensional subspace.Comment: 10 pages, no figures To appear in the International Journal of Mathematic

Optimal solutions to matrix-valued Nehari problems and related limit theorems

In a 1990 paper Helton and Young showed that under certain conditions the optimal solution of the Nehari problem corresponding to a finite rank Hankel operator with scalar entries can be efficiently approximated by certain functions defined in terms of finite dimensional restrictions of the Hankel operator. In this paper it is shown that these approximants appear as optimal solutions to restricted Nehari problems. The latter problems can be solved using relaxed commutant lifting theory. This observation is used to extent the Helton and Young approximation result to a matrix-valued setting. As in the Helton and Young paper the rate of convergence depends on the choice of the initial space in the approximation scheme.Comment: 22 page

Creating new consultation programs in community mental health centers: Analysis of a case study

A primary prevention program, initiated in a community mental health center, never became fully operational. Analysis suggests that failure to include recipients in initial planning, an unrealistic time table, insufficient institutional support for innovation, the project leader's organizational marginality, and the institutional constraints created by commitment to direct treatment of troubled individuals were factors that contributed to the project's failure. Several recommendations are presented. The most novel and important one is that systems-oriented, preventive mental health work should be based in a separate, distinct institution .Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/44297/1/10597_2005_Article_BF01410882.pd

Progress in noncommutative function theory

In this expository paper we describe the study of certain non-self-adjoint operator algebras, the Hardy algebras, and their representation theory. We view these algebras as algebras of (operator valued) functions on their spaces of representations. We will show that these spaces of representations can be parameterized as unit balls of certain $W^{*}$-correspondences and the functions can be viewed as Schur class operator functions on these balls. We will provide evidence to show that the elements in these (non commutative) Hardy algebras behave very much like bounded analytic functions and the study of these algebras should be viewed as noncommutative function theory

The relationships between internal and external threat and right-wing attitudes: A three-wave longitudinal study

The interplay between threat and right-wing attitudes has received much research attention, but its longitudinal relationship has hardly been investigated. In this study, we investigated the longitudinal relationships between internal and external threat and right-wing attitudes using a cross-lagged design at three different time points in a large nationally representative sample (N = 800). We found evidence for bidirectional relationships. Higher levels of external threat were related to higher levels of Right-Wing Authoritarianism and to both the egalitarianism and dominance dimensions of Social Dominance Orientation at a later point in time. Conversely, higher levels of RWA were also related to increased perception of external threat later in time. Internal threat did not yield significant direct or indirect longitudinal relationships with right-wing attitudes. Theoretical and practical implications of these longitudinal effects are discussed

Community‐Engaged Neighborhood Revitalization and Empowerment: Busy Streets Theory in Action

Busy streets theory predicts that engaging residents in physical revitalization of neighborhoods will facilitate community empowerment through the development of sense of community, social cohesion, collective efficacy, social capital, and behavioral action. Establishing safe environments fosters positive street activity, which reinforces neighborhood social relationships. A community‐engaged approach to crime prevention through environmental design (CE‐CPTED) is one promising approach to creating busy streets because it engages residents in collaborative interactions to promote safer environments. Yet, few researchers have studied how CE‐CPTED may be associated with busy streets. We interviewed 18 residents and stakeholders implementing CE‐CPTED in Flint, Michigan. We studied three neighborhoods with different levels of resident control over CE‐CPTED. Participants described how CE‐CPTED implementation affected their neighborhood. Participants from all three neighborhoods reported that CE‐CPTED was associated with positive street activity, sense of community, and collective efficacy. Participants from neighborhoods with higher resident control of CE‐CPTED reported more social capital and behavioral action than those from neighborhoods with less resident control. Our findings support busy streets theory: Community engagement in neighborhood improvement enhanced community empowerment. CE‐CPTED that combines physical revitalization with resident engagement and control creates a potent synergy for promoting safe and healthy neighborhoods.HighlightsBusy streets theory supported in qualitative study of neighborhoods in a rust belt city.Community engaged neighborhood improvement enhances psychological empowerment.Resident control of neighborhood revitalization results in most empowered outcomes of busy streets.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/154635/1/ajcp12358_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/154635/2/ajcp12358.pd

When Collectivity Makes a Difference: Theoretical and Empirical Insights from Urban and Rural Communities in Colombia

[EN] In this paper, we analyse two Colombian communities using elements of the capability approach. The first, Comuna 8, is an urban community in Medellín, Colombia¿s second largest city. The second community is a Zona de Reserva Campesina (Peasant Farmer Reserve Zone) in the Cabrera municipality, in the Department of Cundinamarca. We explore the reasons why people value being part of a community, along with the collective capabilities that are expanded through community participation. As a product of these capabilities communities plan their own territories, which are examples of collective functionings. Social and environmental conversion factors, as well the historical background of the two communities, are key elements in the analysis. Finally, this research sheds light on individual and collective agency. This agency not only occurs in spaces recognised by Colombian law, but also in areas claimed by the communities themselves.This work was supported by Programa Adsideo 2015, Centro de Cooperacion al Desarrollo, Universitat Politecnica de Valencia. Ayudas Salvador de Madariaga, Subprograma de Movilidad, Plan Estatal de Investigacion Cientifica y Tecnica y de Innovacion 2013-2016.Boni Aristizábal, A.; Millan Franco, GF.; Millan Franco, MA. (2018). When Collectivity Makes a Difference: Theoretical and Empirical Insights from Urban and Rural Communities in Colombia. Journal of Human Development and Capabilities. 19(2):216-231. https://doi.org/10.1080/19452829.2017.1412408S216231192Alkire, S. (2002). Valuing Freedoms. doi:10.1093/0199245797.001.0001Biggeri, M., & Ferrannini, A. (2014). Opportunity Gap Analysis: Procedures and Methods for Applying the Capability Approach in Development Initiatives. Journal of Human Development and Capabilities, 15(1), 60-78. doi:10.1080/19452829.2013.837036Boni, A., & Walker, M. (2016). Universities and Global Human Development. doi:10.4324/9781315742793Crocker, D. A., & Robeyns, I. (s. f.). Capability and Agency. Amartya Sen, 60-90. doi:10.1017/cbo9780511800511.005Deneulin, S. (2014). Wellbeing, Justice and Development Ethics. doi:10.4324/9781315867090Deneulin, S., and S. Alkire. 2009. “A Normative Framework for Development?” InAn Introduction to the Human Development and Capability Approach: Freedom and Agency, edited by S. Deneulin and L. Shahani, 19–31. London: Earthscan.Drydyk, J. (2013). Empowerment, agency, and power. Journal of Global Ethics, 9(3), 249-262. doi:10.1080/17449626.2013.818374Apsan Frediani, A., Boni, A., & Gasper, D. (2014). Approaching Development Projects from a Human Development and Capability Perspective. Journal of Human Development and Capabilities, 15(1), 1-12. doi:10.1080/19452829.2013.879014Gaventa, J. (2006). Finding the Spaces for Change: A Power Analysis. IDS Bulletin, 37(6), 23-33. doi:10.1111/j.1759-5436.2006.tb00320.xHill, J. L. (1996). Psychological sense of community: Suggestions for future research. Journal of Community Psychology, 24(4), 431-438. doi:10.1002/(sici)1520-6629(199610)24:43.0.co;2-tIbrahim, S. S. (2006). From Individual to Collective Capabilities: The Capability Approach as a Conceptual Framework for Self‐help. Journal of Human Development, 7(3), 397-416. doi:10.1080/14649880600815982McMillan, D. W., & Chavis, D. M. (1986). Sense of community: A definition and theory. Journal of Community Psychology, 14(1), 6-23. doi:10.1002/1520-6629(198601)14:13.0.co;2-iRamos-Vidal, I., & Maya-Jariego, I. (2014). Sentido de comunidad, empoderamiento psicológico y participación ciudadana en trabajadores de organizaciones culturales. Psychosocial Intervention, 23(3), 169-176. doi:10.1016/j.psi.2014.04.00

Reliability and validity of the Japanese version of the Resilience Scale and its short version

<p>Abstract</p> <p>Background</p> <p>The clinical relevance of resilience has received considerable attention in recent years. The aim of this study is to demonstrate the reliability and validity of the Japanese version of the Resilience Scale (RS) and short version of the RS (RS-14).</p> <p>Findings</p> <p>The original English version of RS was translated to Japanese and the Japanese version was confirmed by back-translation. Participants were 430 nursing and university psychology students. The RS, Center for Epidemiologic Studies Depression Scale (CES-D), Rosenberg Self-Esteem Scale (RSES), Social Support Questionnaire (SSQ), Perceived Stress Scale (PSS), and Sheehan Disability Scale (SDS) were administered. Internal consistency, convergent validity and factor loadings were assessed at initial assessment. Test-retest reliability was assessed using data collected from 107 students at 3 months after baseline. Mean score on the RS was 111.19. Cronbach's alpha coefficients for the RS and RS-14 were 0.90 and 0.88, respectively. The test-retest correlation coefficients for the RS and RS-14 were 0.83 and 0.84, respectively. Both the RS and RS-14 were negatively correlated with the CES-D and SDS, and positively correlated with the RSES, SSQ and PSS (all p < 0.05), although the correlation between the RS and CES-D was somewhat lower than that in previous studies. Factor analyses indicated a one-factor solution for RS-14, but as for RS, the result was not consistent with previous studies.</p> <p>Conclusions</p> <p>This study demonstrates that the Japanese version of RS has psychometric properties with high degrees of internal consistency, high test-retest reliability, and relatively low concurrent validity. RS-14 was equivalent to the RS in internal consistency, test-retest reliability, and concurrent validity. Low scores on the RS, a positive correlation between the RS and perceived stress, and a relatively low correlation between the RS and depressive symptoms in this study suggest that validity of the Japanese version of the RS might be relatively low compared with the original English version.</p