51 resultados para Pressão intra-ocular

em Deakin Research Online - Australia


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Contrary to the expectations of many people, China's recent economic growth has not led to the collapse of the Chinese Communist Party. In fact, the party has recently carried out a peaceful and orderly transition to the so-called fourth generation of leadership, has revitalised itself, and created a new, younger and better trained cadre corps. Despite this successful transformation, there continue to be many problems that the party will need to overcome if it is to remain in power, including pressures for democratisation in both urban and rural areas, widespread corruption, the emergence of new social groups, and increasing dissatisfaction among workers who seem to be losing out in the present transition processs. This book explores the current state of the Chinese Communist Party and the many challenges which it faces.

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The measurement of both marketing culture and behaviour provides the opportunity to gain more insight into the overall market focus of organisations. This article seeks to determine the market orientation and marketing culture of all staff within organisations, to ascertain to what extent other members of an organisation support or create barriers to the successful implementation of the marketing concept. This paper will provide a brief overview of the existing literature in the field of market orientation and marketing culture. After detailing the research design and methodology, a summary developed from 11 focus group sessions - consisting of all staff in one public library service in Victoria, Australia - is presented. The findings indicate that while all areas within this organisation are committed to marketing, there are various interpretations of marketing and how it should be implemented. In addition, the research finds a number of factors that could be instrumental in the successful implementation of the marketing concept in public libraries.

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This paper explores the market orientation and marketing culture of all staff within a nonprofit organisation to ascertain the extent to which members of the organisation support or create barriers to the implementation of the marketing concept. Of particular interest in this research is the role of nonprofit organisations, which are often thought of as having a production, rather than marketing focus. Consequently, there may be cultural and behavioural conflicts between, for example, marketing personnel and production personnel. This paper provides a brief overview of the existing literature in the field of market orientation and marketing culture. After detailing the general research design, a summary of the results of 11 initial focus groups, consisting of all staff in one nonprofit organisation, is presented. The findings indicate that while all areas within this organisation are committed to marketing, there are various interpretations of marketing and how it should be implemented.

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The primary objective of this article is to investigate volatility transmission across three parallel markets operating on the Sydney Futures Exchange (SFE), both within and out of sample. Half-hourly observations are sampled from transaction data for the share price index (SPI) futures, SPI futures options, and 90-day bank accepted bill (BAB) futures markets, and the analysis is carried out using the simultaneous volatility (SVL) system of equations as well as competing volatility models. The results confirm the poor ability of GARCH models to fit intraday data. This study also applies an artificial nesting procedure to evaluate the out-of-sample volatility forecasts. Implied volatility has very limited (if any) predictive power when evaluated in isolation, whereas the SVL model with implied volatility embedded provides incremental information relative to competing model forecasts.

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Theoretically, a contribution of this article is the pinpointed connection between corporate ethics and trust in intra-corporate relationships. Furthermore, it contributes to a conceptual framework that distinguishes between the constructs of business ethics and corporate ethics. The authors also provide a grounded conceptual framework of corporate ethics and trust. The principal dyadic determinants of corporate ethics in intra-corporate relationships are interpreted to be management behaviour versus employee perception of that behaviour. Empirically, the contribution is an in-depth and longitudinal case description that underpins the topic and the discussion provided in the article.

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As the number of mergers and acquisitions (M&A) continues to increase on a global basis, more managers are called upon to develop their M&A transition skills. While, undoubtedly, organizations realise the importance of good communications for successful implementation of change programs throughout the entire M&A process, they often find it hard to make this communication both constant and lucid. The article argues that accounting systems display the potential for improving intra-organizational communication by infusing managers and 'non-accountants' with a common financial vocabulary for communication and 'reading' the state of the business.

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Objective
This study compared the effectiveness of two types of instructor feedback (relative to no feedback) on investigative interviewers’ ability to adhere to open-ended questions in simulated practice interviews about child abuse.
Method
In one condition, feedback was provided at the end of each practice interview. In the other, the instructor stopped the interviewer at various stages during the practice interviews to provide feedback. The relative effect of these conditions was examined by measuring interviewers’ performance in a standardized mock interview paradigm immediately prior to, immediately after, and 12 weeks after the practice and feedback sessions.
Results
Prior to and 12 weeks after the practice sessions were administered, there was no significant difference in participants’ adherence to open-ended questions irrespective of the nature of the feedback, or whether feedback was received. At the immediate post-practice assessment interval, however, the participants who received feedback during the practice interviews performed better (M proportion of open-ended questions = .85, SD = .13) than the other participants (post-interview feedback M = .67, SD = .18, p < .001; no feedback M = .56, SD = .16, p < .001). This heightened use of open-ended questions was associated with a greater tendency among the interviewees to provide abuse-related details in response to open-ended questions (M = .91, SD = .11) compared to the other participants (post-interview feedback M = .77, SD = .15, p < .05; no feedback M = .69, SD = .16, p = .001).
Conclusions
Different types of feedback can be differentially effective in training child abuse investigators to adhere to open-ended questions. The benefits of any training program, however, are likely to be short-lived without ongoing practice.
Practice implications
A single study compared the relative effectiveness of two types of instructor feedback (relative to no feedback) on investigative interviewers’ ability to adhere to open-ended questions in simulated practice interviews about child abuse. This research is relevant to trainers of investigative interviewers because there is currently large variability in the type of feedback employed in training programs. This study is one of the first to empirically demonstrate that different types of feedback may be differentially effective in improving the performance of investigative interviewers.

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Traditional image retrieval systems are content based image retrieval systems which rely on low-level features for indexing and retrieval of images. CBIR systems fail to meet user expectations because of the gap between the low level features used by such systems and the high level perception of images by humans. Semantics based methods have been used to describe images according to their high level features. In this paper, we performed experiments to identify the failure of existing semantics-based methods to retrieve images in a particular semantic category. We have proposed a new semantic category to describe the intra-region color feature. The proposed semantic category complements the existing high level descriptions. Experimental results confirm the effectiveness of the proposed method.

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Prevailing theory predicts that lower levels of intra-clutch variation in host eggs facilitate the detection of brood parasitism. We assessed egg matching using both human vision and UV-VIS spectrophotometry and then followed the nest fate of great reed warblers naturally parasitised by European cuckoos. Rejection was predicted by the following three variables: matching between cuckoo and host eggs on the main chromatic variable defined by principal components analysis of the egg spectra (which has a strong loading in the UV); the number of host eggs in the nest; and human estimates of intra-clutch variation. The first variable is not correlated to human estimates of matching, which do not predict rejection. In line with another recent study, rejection rates were predicted by higher levels of intra-clutch variation in the host eggs, suggesting that higher rather than lower levels of intra-clutch variation can facilitate the discrimination of cuckoo eggs by hosts. We suggest that the importance of intra-clutch variation is context dependent, with intra-clutch variation being important when there is good matching between the host and the cuckoo eggs. Our results also suggest that both spectrometric and human visual assessments of egg matching and intra-clutch variation are prudent: the former provide the best method of estimating reflectance variation, whereas the latter include some assessment of patterns of maculation.

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A microspectrophotometric study was conducted on the retinal photoreceptors of four species of bird: cut-throat finches (Amadina fasciata), gouldian finches (Erythrura gouldiae), white-headed munias (Lonchura maja) and plum-headed finches (Neochmia modesta). Spectral characteristics of the photoreceptors in all four species were very similar. Rods contained a medium-wavelength-sensitive visual pigment with a wavelength of maximum absorbance at 502-504 nm. Four spectrally distinct types of single cone contained a visual pigment with wavelength of maximum absorbance at either 370-373 nm (ultraviolet-sensitive), 440-447 nm (short-wavelength-sensitive); 500 nm (medium-wavelength-sensitive) or 562-565 nm (long-wavelength-sensitive). Oil droplets in the ultraviolet-sensitive single cones showed no detectable absorption between 330 nm and 800 nm. Oil droplets in the short-, medium-, and long-wavelength-sensitive single cones had cut-off wavelengths at 415-423 nm, 510-520 nm and 567-575 nm, respectively. Double cones contained the visual pigment with wavelength of maximum absorbance at 562-565 nm observed in long-wavelength-sensitive single cones. Only the principal member of the double cone pair contained an oil droplet (P-type, cut-off wavelength at 414-489 nm depending on species and retinal location). Spectral transmittance of the intact ocular media of each species was measured along the optic axis. Wavelengths of 0.5 transmittance for all species were very similar (316-318 nm).

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The spectral absorption characteristics of the retinal photoreceptors of the blue tit (Pal trs caeruleus) and blackbird (Turdus merula) were investigated using microspectrophotometry. The retinae of both species contained rods, double cones and four spectrally distinct types of single cone. Whilst the visual pigments and cone oil droplets in the other receptor types are very similar in both species, the wavelength of maximum sensitivity (lambda(max)) of long-wavelength-sensitive single and double cone visual pigment occurs at a shorter wavelength (557 nm) in the blackbird than in the blue tit (563 nm). Oil droplets located in the long-wavelength-sensitive-single cones of both species cut off wavelengths below 570-573 nm, theoretically shifting cone peak spectral sensitivity some 40 nm towards the long-wavelength end of the spectrum. This raises the possibility that the precise lambda(max) of the long-wavelength-sensitive visual pigment is optimised for the visual function of the double cones. The distribution of cone photoreceptors across the retina, determined using conventional light and fluorescence microscopy also varies between the two species and may reflect differences in their visual ecology.