Program II—Eight years after

As freshmen in 1966, 26 students at a liberal arts college entered Program II, and experiment in individualized education which relieved them from usual collegiate requirements for all four years. Twelve years later, 22 of these participants, plus 19 nonparticipating classmates of 1970, were interviewed. Except for their evaluation of their college experience (Program II participants were more negative about it), participants and nonparticipants are indistinguishable on comparisons of post-graduate education, occupational history, family and residential patterns, leisure activities, and attitudes toward self.This research was supported by a grant from the Mellon Foundation.     

数字黑洞

本文分析了数字化项目的投资陷阱，从成本构成上阐述了容易被人忽视的持续性投入，提醒人们，如果预算中无法保障维护性费用的话，先期进行数字化的高昂投入也将前功尽弃。     

Using matrix norms to estimate the direction of arrival of planar waves on an ULA

SEAD method estimates the direction-of-arrival angles on an uniform linear array based on the difference between the two largest singular values, what is called differential spectrum. Although it presented an outstanding performance, the ability to indicate the source positions was not elucidated yet. Inspired by the differential spectrum formulation we derived a total differential spectrum and found out that the matrix norm induced by the vector 2-norm of a modified spatial covariance matrix can be used to estimate the direction-of-arrival of multiple plane waves. Indeed we show that matrix norms are estimators and we propose their use instead of the singular value decomposition in SEAD-based methods. We present a general mathematical expression in order to explicit the operating principles of the proposed methods. Consequently, we were able to explain how the relation between the arriving and the search angles produces the larger peaks on the differential spectrum. To evaluate the important role played by matrix norms, a thousand experiments were carried out. They showed that the proposed approach proved to be as accurate as the previous SEAD-based methods, while providing a significant reduction on runtime. It also outperformed well-established methods like MODEX regarding the estimation error.     

When neighboring disciplines fail to learn from each other: The case of innovation and project management research

As knowledge production becomes more specialized, studying complex and multi-faceted empirical realities becomes more difficult. This has created a growing need for cross-fertilization and collaboration between research disciplines. According to prior studies, the sharing of concepts, ideas and empirical domains with other disciplines may promote cross-fertilization. We challenge this one-sided view. Based on an analysis of the parallel development of the neighboring disciplines of innovation studies and project management, we show that the sharing of concepts and empirical domains can have ambivalent effects. Under conditions of ideological distancing, shared concepts and domains will be narrowly assimilated ? an effect we call ‘encapsulation’ – which creates an illusion of sharing, while promoting further self-containment. By comparison, reflexive meta-theories and cross-disciplinary community-building will enable a form of sharing that promotes cross-fertilization. Our findings inform research on research specialization, cross-fertilization and effectiveness of interdisciplinary collaboration.     

Neue Schulaufsichts- und Schulleitungsformen in Schweden (das Schulgesetz Vom 1. Juli 1958)

Ohne Zusammenfassung     

Development and initial validation of a multidimensional questionnaire on the relationship to work (RWQ)

The paper presents first the theoretical foundations used to develop a pre-experimental version of a questionnaire on relationship to work, and then the four stages of its initial validation leading to an experimental version. These stages included: (1) Defining the dimensions and sub-dimensions of the relationship to work concept; (2) Operationalizing the dimensions and sub-dimensions and creating the items; (3) Verifying the face and content validity and developing the pre-experimental questionnaire; (4) Testing the pre-experimental questionnaire with 550 workers and 538 students, assessing its psychometric properties and elaborating the experimental questionnaire.

     

Sports activity patterns and cardio-metabolic health over time among adults in Germany: Results of a nationwide 12-year follow-up study

BackgroundPhysical activity is favorable for health, and vigorous sports activity is particularly beneficial. This study investigates the association between changes in sports participation patterns over time and cardio-metabolic and self-perceived health outcomes.MethodsData from 3752 adults (18–79 years of age) who participated in 2 national health interview and examination surveys in 1997–1999 and 2008–2011 were included, with a mean follow-up time of about 12 years. A change in self-reported sports activity was analyzed with respect to the incidence of type 2 diabetes, coronary heart disease (CHD), hypertension, obesity, dyslipidemia, metabolic syndrome, and poor self-perceived health. Participants with pre-existing disease or risk factor of interest at baseline were excluded from the analysis. Being sufficiently active in sports was specified as doing sports for at least 1–2 h per week, and 4 activity categories were defined: 1) inactive at both time points (inactive–inactive), 2) inactive at baseline and active at follow-up (inactive–active), 3) active at baseline and inactive at follow-up (active–inactive), and 4) active at both time points (active–active). Associations between sports activity engagement and health outcomes were estimated by logistic regression models with different stages of adjustments.ResultsNot engaging in any regular sports activity at both time points (inactive–inactive) was associated with higher rates of type 2 diabetes (odds ratio (OR) = 1.82, 95% confidence interval (95%CI): 1.08–3.08), CHD (OR = 1.82, 95%CI: 1.16–2.84), hypertension (OR = 1.36, 95%CI: 1.03–1.81), metabolic syndrome (OR = 1.58, 95%CI: 1.08–2.32), and poor self-perceived health (OR = 2.54, 95%CI: 1.83–3.53) compared to doing regular sports for a minimum of 1–2 h per week over time (active–active). In case of change from inactivity to any regular sports activity (inactive–active), the rate of risk factor occurrence was not statistically different from the active–active reference group except for poor self-perceived health, but it was higher for type 2 diabetes (OR = 2.15, 95%CI: 1.12–4.14) and CHD (OR = 1.77, 95%CI: 1.03–3.03). Being active at baseline but inactive at follow-up (active–inactive) was not associated with higher disease incidence of type 2 diabetes (OR = 0.70, 95%CI: 0.25–1.97) or CHD (OR = 1.20, 95%CI: 0.49–2.99), but was associated with higher rates of hypertension (OR = 1.61, 95%CI: 1.11–2.34), obesity (OR = 2.34, 95%CI: 1.53–3.57), metabolic syndrome (OR = 1.70, 95%CI: 1.11–2.63), and poor self-perceived health (OR = 2.16, 95%CI: 1.53–3.07) at follow-up.ConclusionEven a low weekly quantity (1–2 h) of regular sports activity is partly associated with health benefits. Being formerly but not currently active was not associated with an increased disease incidence, but was associated with a higher risk-factor development compared to the reference group (active–active). Becoming active was preventive for risk-factor development but was not preventive for disease incidence, which probably means that the health benefits from sports activity are not sustainable and disease incidence is only shifted to a later period in life. For this reason, the promotion of and commitment to regular sports activity should be addressed as early as possible over the lifespan to achieve the best health benefits.     

Young refugees’ and asylum seekers’ career choices: a qualitative investigation

International Journal for Educational and Vocational Guidance - A major challenge for refugees and asylum seekers is social and professional integration. Using constructivist and capability...