815 research outputs found
History teaching in Higher Education: breaking down the barriers to progression and dialogue
Paper given at History in British Education (first conference
Age validation, growth, mortality, and demographic modeling of spotted gully shark (Triakis megalopterus) from the southeast coast of South Africa
This study documents validation of vertebral band-pair formation in spotted gully shark (Triakis megalopterus) with the use of fluorochrome injection and tagging of captive and wild sharks over a 21-year period. Growth and mortality rates of T. megalopterus were also estimated
and a demographic analysis of the species was conducted. Of the 23 OTC (oxytetracycline) -marked vertebrae examined (12 from captive and 11 from wild sharks), seven vertebrae
(three from captive and four from wild sharks) exhibited chelation of the OTC and fluoresced under ultraviolet
light. It was concluded that a single opaque and translucent band pair was deposited annually up to at
least 25 years of age, the maximum age recorded. Reader precision was assessed by using an index of average
percent error calculated at 5%. No significant differences were found between male and female growth patterns (P>0.05), and von Bertalanffy growth model parameters for combined sexes were estimated to be L∞=1711.07 mm TL, k=0.11/yr and t0=–2.43 yr (n=86). Natural mortality was estimated at 0.17/yr. Age at maturity was estimated at 11 years for males and 15 years for females. Results of the demographic analysis showed that the population, in the
absence of fishing mortality, was stable and not significantly different from zero and particularly sensitive
to overfishing. At the current age at first capture and natural mortality rate, the fishing mortality rate required to result in negative population growth was low at F>0.004/
yr. Elasticity analysis revealed that juvenile survival was the principal factor in explaining variability in
population growth rate
Unhappily Ever After: Effects of Long-Term Low-Quality Marriages on Well-Being
The present study shows that long-term low-quality marriages have significant negative effects on overall well-being. We utilize a nationally representative longitudinal study with a multi-item marital quality scale that allows us to track unhappy marriages over a twelve-year period and to assess marital happiness along many dimensions. Remaining unhappily married is associated with significantly lower levels of overall happiness, life satisfaction, self-esteem, and overall health, along with elevated levels of psychological distress, compared to remaining otherwise continuously married. There is also some evidence that staying unhappily married is more detrimental than divorcing, as people in low-quality marriages are less happy than individuals who divorce and remarry and have lower levels of life satisfaction, self-esteem, and overall health than individuals who divorce and remain unmarried. Unhappily married people may have greater odds of improving their well-being by dissolving their low-quality unions, as there is no evidence that they are better off on any aspects of overall well-being than those who divorce
Where’s My Favorite Dictator? An Analysis of the American Empire In Post-Revolution Egypt
In 2011, Egypt became the epicenter of a regional wave of uprisings demanding an end to corruption, inequality, and undemocratic governance. The Egyptian revolution marked the hopeful beginning of a democratization process. However, in 2013 a military coup by General Abdel Fatah El-Sisi deposed the elected president and ended Egypt’s democratic experiment (DeSmet 2021). Despite the deterioration in U.S.-Egypt relations during the Obama administration and the erosion of political freedoms and economic stability over the last decade, the Trump administration enthusiastically embraced El-Sisi’s regime. Did Trump\u27s claim that El-Sisi was his “favorite dictator” signal a profound shift in American policy? In this case study of American foreign policy in Egypt during the Trump administration, I argue that the United States has pursued a strategy of democracy prevention to secure American interests and incorporate Egypt into a regional neoliberal order. Trump maintained the imperial approach of his predecessors by deepening security ties with the Egyptian military, accelerating the securitization of foreign aid, and outsourcing imperialism to the IMF and the Gulf. Nevertheless, Trump’s America First foreign policy departed from past presidents by promoting Sisi’s authoritarianism, rejecting democracy promotion and soft power, and aggressively deterring Egypt from aligning with American rivals. I assert that the Trump administration’s foreign policy strategy responded to declining American influence in the Middle East and North Africa. America First foreign policy was an aggressive but contradictory and limited strategy to sustain American dominance in a region characterized by increasing multipolarity
Validity and Reliability of the Lesbian, Gay, Bisexual Working Alliance Self-Efficacy Scales
In this paper, the authors report on the development and initial psychometric evaluation of the Lesbian, Gay, and Bisexual Working Alliance Self-Efficacy Scales (LGB-WASES) with data collected from two studies and 534 counseling trainees. Exploratory factor analysis results yielded a 32-item scale with a three-factor model (a) Emotional Bond, (b) Establishing Tasks, and (c) Setting Goals. LGB-WASES scores were internally consistent and remained stable over a 3-week period. Construct validity evidence suggests the LGB-WASES scores were (a) positively related to general perceptions of counseling self-efficacy and multicultural counseling competency, (b) negatively related to attitudes toward lesbians and gay men, and (d) unrelated to social desirability. Recommendations for future research are also discussed
Meeting the demographic challenges ahead: Toward culture change in an ageing New Zealand
There are several innovative service delivery models in the United States (US) relevant to long-term care policy development and implementation in New Zealand. An especially fruitful source of innovation has been the culture change movement, which originated in the US but has begun to spread to New Zealand and other OECD countries. The culture change philosophy requires that providers respond to the values, preferences, and needs of care recipients. It also requires devolving authority to direct care workers who know their clients best, in addition to transitioning from sterile 'clinical' settings to more homelike environments. New Zealand has a more favourable policy context for improving long-term care than the US. Thus, it is critical that it build upon these short term advantages to promote further dissemination of the culture change ethos, thereby placing caregivers in a better position to meet current care challenges, not to mention those posed by growth in the elderly population ahead
Colour vision in the glow-worm Lampyris noctiluca (L.) (Coleoptera: Lampyridae): evidence for a green-blue chromatic mechanism
Male glow-worms Lampyris noctiluca find their bioluminescent mates at night by phototaxis. There is good evidence that location of mates by lampyrid beetles is achieved by a single spectral class of photoreceptor, whose spectral sensitivity is tuned to the bioluminescent spectrum emitted by conspecifics, and is achromatic. We ask whether glow-worm phototaxis involves interactions between two spectral classes of photoreceptor. Binary choice experiments were conducted in which males were presented with artificial light stimuli that differ in spectral composition. The normal preference for a green stimulus (λmax=555 nm), corresponding to the bioluminescence wavelength produced by signalling females, was significantly reduced by adding a blue (λmax=485 nm) component to the signal. This implies an antagonistic interaction between long- and short-wavelength sensitive photoreceptors, suggesting colour vision based on chromatic opponency. Cryosections showed a band of yellow filter pigment in the fronto-dorsal region of the male compound eye, which could severely constrain colour vision in the dim conditions in which the insects signal. This apparent paradox is discussed in the context of the distribution of the pigment within the eye and the photic niche of the species
Management Learning in Historical Perspective: Rediscovering Rowntree and the British Interwar Management Movement
This is the author accepted manuscript. The final version is available from Academy of Management via the DOI in this record.British interwar management (1918-1939) has been criticized as overly conservative, comprising a core of progressive firms amidst a mass of conservatively-run, family-dominated businesses. According to the dominant narrative, British firms exhibited little interest in new managerial approaches. Our study of the Rowntree business lectures and British interwar management movement challenges this view; suggesting British managers displayed greater openness to innovation than is commonly recognized. We uncover and analyse a network of British firms engaged in management education through organized peer-to-peer communication, facilitated by lectures and management research groups initiated by Seebohm Rowntree. Our primary contribution to the literature is to offer a more nuanced perspective on the evolution of British management learning in the interwar years. This reveals dynamic knowledge networks reflexively engaged in advancing and codifying practice-based learning to promote the diffusion of effective solutions to shared problems – building communities of practice, codifying management knowledge, and drawing on an ethos of ‘business as service’. By undertaking archival research to create a coherent body of documentary material, and making this available to others, we also make a methodological contribution, creating a new ‘space’ for future researchers to explore, from which they can write new management histories of their own.Economic and Social Research Council (ESRC
- …