Demography of a ground nesting bird in an urban system: are populations self-sustaining?

Urbanization poses threats to earth’s biota, and retention of remnant native habitat in protected areas within expanding urban boundaries may help alleviate threats to wildlife. However, it is unclear for nearly all nonsynanthropic (i.e., not benefiting from an association with humans) species whether vital rates in urban habitats can sustain populations or if populations persist only through immigration from outside the urban boundary. We conducted a three-year study of spotted towhees (Aves: Pipilo maculatus) breeding in four undeveloped parks in Portland, OR, USA, to measure park-specific seasonal reproductive output (F) and annual adult survival (S_A). We developed a stochastic model that combined F and S_A with an estimate of first-year survival to measure population growth rate (λ) in all parks assumed to be closed to immigration. F differed among parks but S_A did not. Relatively high F was possible because many pairs raised >1 brood/season. When combined with empirical estimates of survival through the 30-day period of post-fledging parental care (S_D = 0.645), only 2 of 4 parks were self-sustaining (i.e., λ > 1.0). However, S_D reflected substantial loss of fledglings to domestic cats (Felis catus). Assuming no loss to cats and either partial compensatory or additive mortality of fledglings substantially improved prospects of population persistence for declining (sink) populations. Moreover, allowing low levels of immigration to sinks reversed population declines in most parks even when vital rates were insufficient to maintain populations. Our results suggest that nonsynanthropic bird species can persist in urban landscapes, but also that offspring mortality in the post-fledging period may be a critical determinant of population viability.     

Making Sense of Neoliberal Subjectivity: A Discourse Analysis of Media Language on Self-development

The influence of neoliberalism on culture and subjectivity is well documented. This paper contributes to understanding of how neoliberal ideology enters into the production of subjectivity. While subject formation takes place in multiple and contradictory ways and across multiple social sites, we focus on the increasingly popular media discourse of self-development, and examine it as a technology of neoliberal subjectification. Drawing on Foucauldian understandings, we analyze data from two different newspapers from two different national contexts, both of which are heavily influenced by neoliberalism. Based on our analysis, we detail four interrelated discourses—rationality, autonomy and responsibility, entrepreneurship, and positivity and self-confidence—demonstrating how these discourses constitute the neoliberal subject in ways consonant with neoliberal governmentality. There is no observable resistance to subject positions offered within these discourses. Self-development discourse instills stronger individualism in society, while constraining collective identity, and thus provides social control and contributes to preserving status quo of neoliberal societies.     

Infant–Mother and Infant–Caregiver Emotional Relationships: Process Analyses of Interactions in Three Contemporary Childcare Arrangements

Emotional relationships in infant–mother dyads in families where mothers provided full‐time childcare were compared with those of families where mothers used in‐home childcare providers and family childcare providers (N = 245). Infant relationships with childcare providers were also studied. Emotional relationships were adequate in all three childcare arrangements, but infant–mother dyads in in‐home childcare arrangements displayed healthier emotional relationships than infant–mother dyads in mother care arrangements; no differences in the health of emotional relationships with infants emerged among the three types of childcare providers (mother care, in‐home childcare, family childcare). Infant–mother dyads in in‐home childcare arrangements also displayed healthier emotional relationships than infant–in‐home childcare caregiver dyads, but infant–mother and infant–caregiver dyads were comparable in family childcare families. Emotional relationships in infant–mother and infant–caregiver dyads were not correlated, regardless of the type of childcare.     

Rethinking Legitimacy and Illegitimacy in Violent Political Conflict

Analytic and conceptual ambiguity associated with the study of legitimacy have motivated debates over the utility of this construct in the analysis of violent political conflict. Using these debates as a point of departure, I review several challenges that have limited the study of legitimacy in this area and discuss two features of legitimation that have gone widely overlooked: (i) the asymmetric causes and effects of legitimacy and illegitimacy, and (ii) the relational dynamics of legitimation. I argue that turning explicit analytic attention to the asymmetry and relationality of legitimacy and illegitimacy allows us to overcome the most intractable challenges associated with the analysis of legitimation in violent conflict.     

Crossing the border: immigrant student identities in Swaziland schools

This paper sets out to explore how the resettlement of immigrant students in a host country and schooling context influenced the constitution, negotiation and representation of their identities. Data capture included a mix of semi-structured interviews, focus group interviews, observations and a researcher journal. Data were analyzed by means of the content analysis method. Findings were fivefold. First, the sociocultural context influenced the way immigrant students constructed their identities. Second, categorization was based on phenotypical features, accent, negative attitudes and stereotypical perceptions of immigrants by Swaziland society. Third negotiated identities were multiple in nature and rooted in their culture of origin. Fourth, self-determination was a strong trait of immigrants; reflected in their work ethic, in the resolution of culture conflicts, and in their drive to achieve linguistic competency. And fifth, psychosocial passing was consistent with second generation immigrants. New knowledge generated from this study revealed that African immigrants preferred to be clustered with Mozambican immigrants, as it provided solid ground from which they negotiated identities in Swaziland schools. Mozambican immigrants recruited other African immigrants into their cluster, which they referred to as the ‘Chico nation’. And, the culture of non-Christian immigrants was suppressed to promote Christian religious beliefs and values.     

民族地区特色小镇发展评价体系研究——广西中渡镇的实证

本文以民族地区特色小镇发展为目标层,针对其“重申报、轻发展”问题,选取环境资源、资本资源、基础设施、特色产业发展、政府支持和民生改善作为准则层,再细分为14个中间指标和45个执行指标,构建“目标层-准则层-指标层”评价体系。接着,运用模糊综合评价将这一评价体系应用于广西中渡镇。研究表明,中渡镇依托“一体两翼”资源,主推“旅游+”复合发展模式,特色产业亮点突出,但淡、旺季明显,特色产业效益有待提升,可优化游客结构和来源地,打造一体化“旅游带”,提振区域知名度。民族地区特色小镇发展评价体系的应用,要强化特色,避免同质性发展,结合政策优势构建更“接地气”的评价体系。     

Labor Utilization Effects of Labor Scheduling Flexibility Alternatives in a Tour Scheduling Environment

This study used a factorial experimental design and a new modeling methodology to investigate the impact of a number of labor scheduling flexibility alternatives and labor requirements characteristics on labor utilization within a tour scheduling environment. Break-placement flexibility and shift-length flexibility were found to be extremely effective in improving labor utilization for all labor requirement distributions used. Flexibility with respect to the number of days included in a tour schedule resulted in substantial improvement in labor utilization for all labor requirements distributions exhibiting daily and/or weekly variation. Surprisingly, virtually no improvement in labor utilization was achieved for any labor requirement distribution by the removal of requirements for consecutive days off. In addition, almost no improvement was found by allowing the shift start time to vary across the working days included in tours. High labor requirement amplitude was found to have a strong adverse effect on labor utilization while longer operational days were associated with improved labor utilization for all labor requirement distributions. We discuss the implications of these results for service operations management and provide suggestions for future research.     

Two-Group Classification Using Neural Networks*

Artificial neural networks are new methods for classification. We investigate two important issues in building neural network models; network architecture and size of training samples. Experiments were designed and carried out on two-group classification problems to find answers to these model building questions. The first experiment deals with selection of architecture and sample size for different classification problems. Results show that choice of architecture and choice of sample size depend on the objective: to maximize the classification rate of training samples, or to maximize the generalizability of neural networks. The second experiment compares neural network models with classical models such as linear discriminant analysis and quadratic discriminant analysis, and nonparametric methods such as k-nearest-neighbor and linear programming. Results show that neural networks are comparable to, if not better than, these other methods in terms of classification rates in the training samples but not in the test samples.     

Manufacturing Proactiveness and Performance*

Since Skinner's [40] landmark article depicting the manufacturing function as the “missing link” in corporate strategic processes, a portion of the blame for inferior performance in many firms has been attributed to the subordinate strategic position of manufacturing. It has been argued that part of the solution to misalignments between the capabilities possessed by manufacturing and the requirements dictated by customers is for manufacturing to take a more proactive stance. However, little research has been reported which examines manufacturing proactiveness empirically. In this paper, we address this gap by developing an operational definition of manufacturing proactiveness and testing empirically whether a link exists between proactiveness and performance based on data collected from a sample of manufacturers. Based on the manufacturing strategy literature, we identify two major dimensions of manufacturing proactiveness: (1) the degree of manufacturing's involvement in the strategic processes of the business unit; and (2) the degree of commitment to a long-term program of investments in manufacturing structure and infrastructure aimed at building capabilities in anticipation of their need. We develop reliable scales for measuring each of the dimensions of proactiveness and use the data to provide evidence of a clear link between manufacturing proactiveness and business performance. We show that investments in structural programs coupled with either high levels of manufacturing involvement in strategic processes or planned investments in infrastructural programs correlate with higher than average performance.     

民族隐秘文化浅析

对于什么是民族文化,目前可以说论述颇多。但是,对于什么是民族隐秘文化,应该说至今还没有多少人能够论及,以至于我们在此之前想找一个较为完整的定义都不能如愿。因此,本文的目的就是从现代汉语中“隐秘”一词的含义入手,通过对民族文化中“显性文化”和“隐性文化”的区分,以期能对“民族隐秘文化”的含义和内容进行界定。