Home About us Contact
|
Home About us Contact | ||
|
|
||
Size Matters (size + matter)
Selected AbstractsDoes Entry Size Matter?THE JOURNAL OF INDUSTRIAL ECONOMICS, Issue 1 2001Technology on Firm Survival, The Impact of the Life Cycle A wave of empirical studies has recently emerged showing that smaller-scale entry is confronted with a lower likelihood of survival than their larger counterparts. The purpose of this paper is to examine whether the relationship between size of a firm when entering an industry and the likelihood of survival holds under different technological conditions and across the different stages of the industry life cycle. The empirical evidence suggests that the relationship between firm size and the likelihood of survival is shaped by technology and the stage of the industry life cycle. While the likelihood of survival confronting small entrants is generally less than that confronting their larger counterparts, the relationship does not hold for mature stages of the product life cycle, or in technologically intensive products. In mature industries that are still technologically intensive, entry may be less about radical innovation and possibly more about filling strategic niches, thus negating the impact of entry size on the likelihood of survival. [source] Program Proficiency in Training Graduate Students for Clinical Faculty Careers: Does Program Size Matter?CLINICAL PSYCHOLOGY: SCIENCE AND PRACTICE, Issue 2 2002Stephen C. Ilardi Hunt suggests that our published analysis of program proficiency in training graduate students for clinical psychology faculty careers is "worse than useless," inasmuch as it utilizes as its principal measure the total number (rather than the percentage) of each program's graduates which have attained training faculty status, an approach that, according to Hunt, "systematically underrates small programs." In reply, we note that (a) our analysis was not intended as an overall rating of program strength, but rather as an indication of program achievement in a narrowly specified domain, (b) the utilized total number metric has considerable specific informative utility, and (c) additional analyses based upon Hunt's preferred percentage metric do not support the claim that our previously published report systematically underrated small programs. Because it may be of interest to prospective students (and others), a rank-ordered listing of programs which have placed at least 5% of recent Ph.D. recipients in clinical faculty positions is provided. [source] Liver cell volume regulation: Size mattersHEPATOLOGY, Issue 6 2001Jeffrey C. Dunkelberg First page of article [source] Size matters: the value of small populations for wintering waterbirdsANIMAL CONSERVATION, Issue 3 2004Sarah F. Jackson Protecting systematically selected areas of land is a major step towards biodiversity conservation worldwide. Indeed, the identification and designation of protected areas more often than not forms a core component of both national and international conservation policies. In this paper we provide an overview of those Special Protection Areas and Ramsar Sites that have been classified in Great Britain as of 1998/99 for a selection of wintering waterbird species, using bird count data from the Wetland Bird Survey. The performance of this network of sites is remarkable, particularly in comparison with published analyses of networks elsewhere in the world. Nevertheless, the current site-based approach, whilst having the great benefit of simplicity, is deliberately biased towards aggregating species at the expense of the more dispersed distribution species. To ensure that the network continues successfully to protect nationally and internationally important waterbird populations, efforts now need to concentrate on the derivation of species-specific representation targets and, in particular, the ways in which these can be incorporated into the site selection process. Although these analyses concern the performance of protected areas for waterbirds in Great Britain, the results have wide-ranging importance for conservation planning in general and the design of protected area networks. [source] Size matters: the role of scale in geographies of healthAREA, Issue 3 2008Kimberley L Procter No abstract is available for this article. [source] Size matters , in rectal cancerCOLORECTAL DISEASE, Issue 3 2005Article first published online: 27 APR 200 No abstract is available for this article. [source] Does size matter for dispersal distance?GLOBAL ECOLOGY, Issue 4 2007David G. Jenkins ABSTRACT Aim, The aim of this study is to answer the questions: (1) do small organisms disperse farther than large, or vice versa; and (2) does the observed pattern differ for passive and active dispersers? These questions are central to several themes in biogeography (including microbial biogeography), macroecology, metacommunity ecology and conservation biology. Location, The meta-analysis was conducted using published data collected worldwide. Methods, We collected and analysed 795 data values in the peer-reviewed literature for direct observations of both maximal dispersal distance and mass of the dispersing organisms (e.g. seeds, not trees). Analysed taxa ranged in size from bacteria to whales. We applied macroecology analyses based on null models (using Monte Carlo randomizations) to test patterns relative to specific hypotheses. Results, Collected dispersal distance and mass data spanned 9 and 21 orders of magnitude, respectively. Active dispersers dispersed significantly farther (P < 0.001) and were significantly greater in mass (P < 0.001) than passive dispersers. Overall, size matters: larger active dispersers attained greater maximum observed dispersal distances than smaller active dispersers. In contrast, passive-disperser distances were random with respect to propagule mass, but not uniformly random, in part due to sparse data available for tiny propagules. Conclusions, Size is important to maximal dispersal distance for active dispersers, but not for passive dispersers. Claims that microbes disperse widely cannot be tested by current data based on direct observations of dispersal: indirect approaches will need to be applied. Distance,mass relationships should contribute to a resolution of neutral and niche-based metacommunity theories by helping scale expectations for dispersal limitation. Also, distance,mass relationships should inform analyses of latitudinal species richness and conservation biology topics such as fragmentation, umbrella species and taxonomic homogenization. [source] Phase III trials of neo-adjuvant chemotherapy in Stage IIIA non-small cell lung cancer , does size matter?ASIA-PACIFIC JOURNAL OF CLINICAL ONCOLOGY, Issue 2 2009Laurence KRIEGER No abstract is available for this article. [source] Correspondence: Does size matter?BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 5 2006A population based study of birth in lower volume maternity hospitals for low risk women No abstract is available for this article. [source] Growth after ventricular septal defect repair: does defect size matter?ACTA PAEDIATRICA, Issue 9 2010A 10-year experience Abstract Aim:, To evaluate whether the ventricular septal defect (VSD) size, along with the degree of preoperative growth impairment and age at repair, may influence postoperative growth, and if VSD size can be useful to identify children at risk for preoperative failure to thrive. Methods:, Sixty-eight children submitted to VSD repair in a Brazilian tertiary-care institution were evaluated. Weight and height measurements were converted to Z -scores. Ventricular septal defect size was normalized by dividing it by the aortic root diameter (VSD/Ao ratio). Results:, Twenty-six patients (38%) had significantly low weight-for-height, 10 patients (15%) had significantly low height-for-age and 13 patients (19%) had both conditions at repair. Catch-up growth occurred in 82% of patients for weight-for-age, in 75% of patients for height-for-age and in 89% of patients for weight-for-height. Weight-for-height Z -scores at surgery were significantly lower in patients who underwent repair before 9 months of age. The VSD/Ao ratio did not associate with any other data. On multivariate analysis, weight-for-age Z -scores and age at surgery were independent predictors of long-term weight and height respectively. Conclusion:, The VSD/Ao ratio was not a good predictor of preoperative failure to thrive. Most patients had preoperative growth impairment and presented catch-up growth after repair. Preoperative growth status and age at surgery influenced long-term growth. [source] Does size matter for dispersal distance?GLOBAL ECOLOGY, Issue 4 2007David G. Jenkins ABSTRACT Aim, The aim of this study is to answer the questions: (1) do small organisms disperse farther than large, or vice versa; and (2) does the observed pattern differ for passive and active dispersers? These questions are central to several themes in biogeography (including microbial biogeography), macroecology, metacommunity ecology and conservation biology. Location, The meta-analysis was conducted using published data collected worldwide. Methods, We collected and analysed 795 data values in the peer-reviewed literature for direct observations of both maximal dispersal distance and mass of the dispersing organisms (e.g. seeds, not trees). Analysed taxa ranged in size from bacteria to whales. We applied macroecology analyses based on null models (using Monte Carlo randomizations) to test patterns relative to specific hypotheses. Results, Collected dispersal distance and mass data spanned 9 and 21 orders of magnitude, respectively. Active dispersers dispersed significantly farther (P < 0.001) and were significantly greater in mass (P < 0.001) than passive dispersers. Overall, size matters: larger active dispersers attained greater maximum observed dispersal distances than smaller active dispersers. In contrast, passive-disperser distances were random with respect to propagule mass, but not uniformly random, in part due to sparse data available for tiny propagules. Conclusions, Size is important to maximal dispersal distance for active dispersers, but not for passive dispersers. Claims that microbes disperse widely cannot be tested by current data based on direct observations of dispersal: indirect approaches will need to be applied. Distance,mass relationships should contribute to a resolution of neutral and niche-based metacommunity theories by helping scale expectations for dispersal limitation. Also, distance,mass relationships should inform analyses of latitudinal species richness and conservation biology topics such as fragmentation, umbrella species and taxonomic homogenization. [source] Diameter of paediatric sized flexible bronchoscopes: When size mattersPEDIATRIC PULMONOLOGY, Issue 8 2006Barry Linnane MD Abstract Background: A flexible bronchoscope typically gets its designated size from the diameter of the distal tip but this is not the maximum diameter of the insertion tube. Aim: The aim of this study was to determine the size and site of the maximum diameter of flexible bronchoscope insertion tubes and to compare standard bronchofiberscopes with newer bronchovideoscopes. Methods: We assessed 10 bronchoscopes ranging from 2.2 to 4.9 mm external diameter (Olympus®, Tokyo, Japan) using an electronic digital caliper. Investigators were blinded to the type and model of each scope. The median, minimum and maximum diameters of the bronchoscopes were calculated and the measured diameters were compared with the stated diameters of the distal tip and insertion tube. Results: The maximum and median measured diameters were wider than the stated diameter of the distal tip in all the scopes. The maximum discrepancy between the measured and stated diameters ranged from 0.19 mm (6.7%) to 0.66 mm (22.2%) with a mean of 0.41 mm (14.0%). There was no difference between bronchofiberscopes and bronchovideoscopes. Conclusion: The maximum diameter of the distal tip and insertion tube of pediatric sized flexible bronchoscopes is significantly greater than the manufacturer's specifications. This may impact on the choice of bronchoscope selected for procedures in children. Pediatr Pulmonol. 2006; 41: 787,789. © 2006 Wiley-Liss, Inc. [source] A prospective study of conservatively managed acute urinary retention: prostate size mattersBJU INTERNATIONAL, Issue 7 2000V. Kumar Objective To evaluate in a prospective study the medium- to long-term outcome of a policy of conservatively managing acute urinary retention (AUR), arising solely by bladder outlet obstruction caused by benign prostatic enlargement (BPE), and to identify the factors favouring a positive outcome of a trial without catheter (TWOC). Patients and methods All men admitted as an emergency with primary AUR caused by BPE (from August 1997 to March 2000) underwent a TWOC. The following variables were recorded; the nature and duration of any preceding lower urinary tract symptoms, previous episodes of retention, concomitant anticholinergic medication, coexisting constipation, alcohol as a precipitating cause of AUR, previous prostatectomy, confirmed urinary tract infection, residual urine drained on catheterization and prostate size, as determined by a digital rectal examination (DRE) carried out by one consultant urologist in all patients. Those voiding successfully were followed up prospectively using the International Prostate Symptom Score (IPSS), quality-of-life score, urinary flow rate measurement and ultrasonographic measurement of the postvoid residual (PVR). Results Of the 40 men with AUR, 22 (55%) voided spontaneously after removing the catheter and continued to do so with mean peak flow rates of 12.2 mL/s and mean PVRs of 69.6 mL over a follow-up of 8,24 months. These patients remained asymptomatic, with a mean IPSS of 5.2 and quality-of-life score of 0.9. These men had a mean prostatic size of 15.9 g and a mean catheterized residual volume of 814 mL, while in those who had an unsuccessful TWOC the mean prostate size was 27.5 g (P = 0.006) and a mean catheterized residual volume of 1062 mL (P = 0.09). Prostate size as assessed by the DRE was the most significant factor in predicting the outcome of a TWOC. Conclusion A TWOC is justified in the long-term for men presenting with AUR caused by BPE. Prostate size is the most important factor for predicting the outcome of such a trial. [source] | |||||||||||||