185 resultados para abrupt emerging episodes


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For years researchers have exerted every effort to improve the influential roles of microRNA (miRNA) in regulating genes that direct mammalian cell development and function. In spite of numerous advancements, many facets of miRNA generation remain unresolved due to the perplexing regulatory networks. The biogenesis of miRNA, eminently endures as a mystery as no universal pathway defines or explicates the variegation in the rise of miRNAs. Early evidence in biogenesis ignited specific steps of being omitted or replaced that eventuate in the individual miRNAs of different mechanisms. Understanding the basic foundation concerning how miRNAs are generated and function will help with diagnostic tools and therapeutic strategies. This review encompasses the canonical and the non-canonical pathways involved in miRNA biogenesis, while elucidating how miRNAs regulate genes at the nuclear level and also the mechanism that lies behind circulating miRNAs.

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Changes in expectations of research education worldwide have seen the rise of new demands beyond supervision and have highlighted the need for academic leadership in research education at a local level. Based on an interview study of those who have taken up local leadership roles in four Australian universities, this paper maps and analyses different dimensions of the emerging leadership role of research education coordination. It argues that while there is increasing clarity of what is required, there are considerable tensions in the nature of the coordination role and how coordination is to be executed. In particular, what leadership roles are appropriate and how can they be positioned effectively within universities? The paper draws on the Integrated Competing Values Framework to focus on the activities of coordination and on ideas of distributed leadership to discuss the leadership that characterises coordination. It is argued that without acknowledgement of the influences that coordinators need to exert and the positioning and support needed to achieve this, the contemporary agenda for research education will not be realised.

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We investigate the relationship between corporate board structure and firm performance of Bangladeshi companies. Using a sample of 654 firm- year observations for the period 2005-2009, the results show some support for aspects of agency theory as a greater proportion of independent directors on boards is related to better firm performance. Supporting resource dependence theory our result also suggest that larger boards provide valuable business experience, expertise, skill and social and professional networks which might add substantial business resources to the firms and thus positively impact on performance. We also find that female and foreign directors in Bangladesh provide more monitoring which leads to better firm performance. Our study contributes to extant research on board structure–performance relationship by providing evidence from an emerging economy context which is characterised by ownership concentration, family dominance and poor regulatory oversight.

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Guided by the literature on institutional theory and entrepreneurial orientation (EO), this study examines the impact of the institutional environment on EO and performance of microenterprises at the subnational, city level in an emerging economy in contrast to most studies conducted at the national level in developed markets. The results of the study show that four types of formal institutions and two types of informal institutions are significantly associated with EO and that the latter is positively associated with higher levels of microenterprise performance. Implications of the results and future research directions are discussed.

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OBJECTIVE: Depression is the predominant psychosocial and suicide burden in bipolar disorder, yet there is a paucity of evidence-based treatments for bipolar depression. METHODS: This post hoc subgroup analysis of data pooled from two 3-week, randomized, placebo- and olanzapine-controlled trials (December 2004-April 2006, N = 489 and November 2004-April 2006, N = 488) examined a subgroup of patients meeting criteria for moderate-to-severe mixed major depressive episodes, defined using DSM-IV-TR criteria for mixed episodes (mania and major depression simultaneously) with a baseline Montgomery-Asberg Depression Rating Scale (MADRS) total score ≥ 20. RESULTS: Decreases in MADRS scores (least squares mean [SE]), the a priori primary outcome, were significantly greater in the asenapine group than in the placebo group from baseline to day 7 (-11.02 [1.82] vs -4.78 [1.89]; P = .0195), day 21 (-14.03 [2.01] vs -7.43 [2.09]; P = .0264), and endpoint (-10.71 [1.76] vs -5.19 [1.98]; P = .039). Decreases in MADRS scores with asenapine were significantly greater than with olanzapine from baseline to day 7 (-6.26 [1.47]; P = .0436). Decreases in Young Mania Rating Scale mean total score were greater with asenapine than with placebo or olanzapine at all time points assessed. A significantly greater reduction from baseline to day 21 in the Short Form-36 mental component summary score was observed with asenapine, but not olanzapine, compared with placebo (16.57 vs 5.97; P = .0093). Asenapine was generally well tolerated. CONCLUSIONS: These data provide support for the potential efficacy of asenapine in mixed major depressive episodes; however, these data cannot be linearly extrapolated to nonmixed major depression.

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This article analyses the determinants of renewable energy consumption in six major emerging economies who are proactively accelerating the adoption of renewable energy. The long-run elasticities from both panel methods (fully modified ordinary least square and dynamic least square) and the time series method (autoregressive distributed lag) seem to be pretty consistent. For Brazil, China, India and Indonesia, in the long-run, renewable energy consumption is significantly determined by income and pollutant emission. However, for Philippines and Turkey, income seems to be the main driver for renewable energy consumption. In the short-run, for Brazil and China bi-directional causalities between renewable energy and income; and between renewable energy and pollutant emission are found. This research justifies the efforts undertaken by emerging countries to reduce the carbon intensity by increasing the energy efficiency and substantially increasing the share of renewable in the overall energy mix

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Recent geopolitical and economic changes have altered global social policy formation. Bretton Woods multilateral development agencies (MDAs) have selectively incorporated ideas that have emerged from developing country states and decision makers. Recent years have witnessed an increased acceptance of social transfers as part of renewed efforts at poverty alleviation policies based on social risk management. There has been an instance in the use and promotion of conditional cash transfer (CCT) policies by MDAs. One case is the Philippines. CCTs were a product of the emergence of a neostructuralist welfare regime (understood as an ideal type) in Latin America. There was an attempt to reconcile neoliberal strategies of development with aspirations for guaranteed minimum incomes. The Bretton Woods and regional development bank MDAs have facilitated the adoption of CCTs in other developing country contexts. In the Philippines, a combination of actions by national political actors and MDAs resulted in the implementation of a securitised and compliance-focused version of CCTs derived from the Colombian security state. Although poor households welcome income assistance, CCTs have acted to enforce further state monitoring without altering the national-based political and economic processes that replicate poverty.

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This paper investigates venture capitalists' monitoring of managerial behavior by examining their impact on CEO pay–performance sensitivity across various controlling structures in Chinese firms. We find that the effectiveness of venture capitalists' monitoring depends on different types of agency conflict. In particular, we find that venture capital (VC) monitoring is hampered in firms that experience severe controlling-minority agency problems caused by disproportionate ownership structures. We provide further evidence that VC is more likely to exert close monitoring in firms that have greater managerial agency conflict, and thus require more direct monitoring. However, controlling-minority agency problems have a greater impact on VC monitoring than managerial agency problems. Overall, our study suggests that venture capitalists' monitoring role is hampered in an emerging market where firms have complex ownership structures that contribute to severe agency conflict between controlling and minority shareholders.

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This paper examines how the institutional features of emerging economies (i.e., government ownership, political connections, and market reform) influence CEO pay-dispersion incentives. Consistent with our expectation, we find that CEO pay dispersion generally provides a tournament incentive in China's emerging market, as it is positively associated with firm performance. In addition, tournament incentives are weaker where firms are controlled by the government and where the CEO is politically connected, but it became stronger after the China's split-share structure reforms. Further, we find that in state controlled firms the satisfaction gained by meeting multiple economic and social goals largely reduces the effectiveness of tournament incentives, while the managerial agency problems inherent in private firms might mitigate them.

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This paper examines how institutional characteristics of emerging economies influence the effect of control-ownership divergence on market liquidity. We find that the divergence is negatively associated with liquidity and that this negative relationship is more pronounced in firms with more severe agency problems and information asymmetry. We argue that in an emerging market, the negative effect of the divergence on liquidity is worsened by state ownership and poorer shareholder protection, both of which result in more severe agency conflicts; we also find, however, that this effect is alleviated by the NTS reform, which aligns the interest of different shareholders.

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At its core, the power of the public intellectual is the capacity to make ideas move through a culture. This article looks at what kind of academic persona – that is, what kind of public self whose original status comes from intellectual work and thinking – navigates effectively through online culture and communicates ideas in the contemporary moment. Part of the article reports on a research project that has studied academic personas online and explores what can be described as ‘registers of online performance’ that they inhabit through their online selves. The research reveals that public intellectuals have to interpret effectively that online culture privileges what is identified as ‘presentational media’: the individual as opposed to the media is the channel through which information moves and is exchanged online, and it is essentially a presentation of the self that has to be integrated into the ideas and messages. From this initial analysis/categorisation of academic persona online, the article investigates the online magazine The Conversation, which blends journalism with academic expertise in its production of news stories. The article concludes with some of the key elements that are part of the power of the public intellectual online.

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Trichotillomania (TTM) is characterised by the removal of one's hair, causing hair loss. Phenomenological research on TTM has investigated its associated behavioural and affective factors. Few studies have investigated the possible role of cognitions and beliefs, despite emerging support for cognitive therapies in treating this disorder. This study aimed to explore and describe the cognitions and beliefs that contribute to the onset and maintenance of hairpulling in TTM. Eight women with TTM participated in semi-structured, in-depth interviews to explore their experience of cognitions and beliefs before, during and after typical hairpulling episodes. Interviews were analysed using the qualitative method of Interpretative Phenomenological Analysis. Six superordinate themes of beliefs were identified as important: negative self-beliefs, control beliefs, beliefs about coping, beliefs about negative emotions, permission-giving beliefs, and perfectionism. These preliminary findings suggest that cognitions may play an important role in TTM phenomenology. Future quantitative research on the role of cognitions and beliefs in TTM in larger samples has the potential to advance cognitive-behavioural models and treatments of this poorly understood disorder.