679 research outputs found
Concentration in Knowledge Output: A case of Economics Journals
No full textThis paper assesses the degree of author concentration in seven economics journals, which were published in India during 1990-2002. To measure the degree of author concentration, Lotka's Law was used. Moreover, we also make an exploratory analysis of the geographic, economics subfield and institutional concentration in 704 economics journals. An important finding of this paper is that specialized journals in the sample report the highest degree of author concentration. This result is quite similar to the findings by Cox and Chung (1991). Furthermore, there are several instances showing that the journals lean towards certain norms; this may affect the flow of innovative ideas into economics. We conclude that a knowledge activity, involving the high degree of concentration and a biased publication process, may affect the flow of new ideas into the discipline.Concentration, Lotka's Law
Domoic Acid
No full texteditors, R.H. Waring, G.B. Steventon, S.C. Mitchell.; Includes bibliographical references and index.; Chapter 4. written by R. Andrew R. Tasker - Domoic acid - UPEI professor, Dept. of Biomedical Sciences.Source type: Print(0
Survey Report - Casey Station, Antarctica, 1985 - by G.B. Lawrence
No full textProgress Code: completedStatement: See the survey report for more details.Survey report for Casey Station, 1985, by wintering technical officer G.B. Lawrence.<br/><br/>Taken from the survey report:<br/><br/>Projected Summer Program<br/>It is proposed to accurately survey the bedrock in the Dome summit region as preparatory work for future ice drilling. Ice thickness will be measured by ground based ice radar and contouring carried out by barometric heighting.<br/>The testing of a newly designed electro-mechanical drill will also be incorporated into this survey.<br/>A survey of raised beaches of the Windmill Islands is planned as well as a preliminary aerial survey of marine exposures near Jacks Donga.<br/><br/>Projected Traverse Program<br/>It is projected to carry out four glaciological traverses during 1985.<br/>The major objective is the re-measurement of ice movement stations along the previously established eastern line at 69 degrees south as well as snow accumulation measurements,gravity and surface observations and a comprehensive drilling program for stratigraphy studies. This is to occur mainly during the spring traverse. AN ice radar survey is to be undertaken on the eastern line as well as on the return journey along the planned parallel offset approximately 50 kilometres north.<br/>A secondary objective, but of highest priority for winter, is the establishment of a new line to the east of Law Dome and, time permitting, the re-measurement and possible extension of the GW line to the south-west.<br/>During the autumn traverse, generally a "shake-down", the aim is to depot fuel on the eastern line in preparation for the spring traverse and a new line parallel to and to the north of GD03 - GD01 is to be surveyed which would entail emplacement of five new ice movement stations. These stations are to be re-measured in spring
Constraint management and transformation
No full textElectrical Engineering, Mathematics and Computer Scienc
Behaviour of cast iron at high subcritical temperatures
No full textMechanical, Maritime and Materials Engineerin
Towards labonachip optical trapping and Raman spectroscopy of extracellular vesicles using multiwaveguide traps
No full textOptofluidic lab-on-a-chips (LOCs) employing a dual-waveguide trap for optical trapping and Raman spectroscopy have proven to be attractive and potent tools for high throughput chemical fingerprinting of bio-particles for disease diagnosis. Among the relevant bio-particles are extracellular vesicles (EVs) which a been proven through recent studies to be potential biomarkers for identification of diseases, such as cancer. However, EVs are small with diameters ranging between 30 and 1000 nm and present a challenge for both on-chip optical trapping and Raman Spectroscopy. The research presented in this thesis is aimed at the development of a multi-waveguide optical trap aimed at the combined on-chip optical trapping and Raman spectroscopy for biochemical characterisation of single EVs.Firstly, the capabilities and limitations of a dual-waveguide trap for stable on-chip optical trapping of EVs is investigated through an in-depth simulation study. This ultimately yields a comprehensive overview of stable trapping conditions for EVs in terms of EV diameter and refractive index, and the injected optical power. Then, novel multi-waveguide traps are designed and fabricated. These multi-waveguide traps lead to stronger light confinement in the channel, resulting in improved optical trapping and Raman signal generation. This is experimentally demonstrated through the optical trap stiffness values and the recorded Raman signal strength of polystyrene beads generated between a 2-waveguide and 16-waveguide trap. Finally, the 16-waveguide trap is used to demonstrate optical trapping of B. Subtillis spores, as an intermediate step towards EVs. Optical trapping of the spores is studied with both experiments and simulations. Special attention is paid to the effect of random phase differences between the beams exiting the waveguides on the optical trap quality.In conclusion, the results show promising prospects for the realisation of multi-waveguide traps for on-chip biochemical fingerprinting of EVs with optical trapping and Raman spectroscopy. <br/
A denaturing of the non- places: The redefinition of the urban voids of the escalator area in Hong Kong
No full textThe city produces spaces that could be termed as voids, due to a momentum of a design which tends to fill with clear functions and meanings each corner of it. As the city develops, within the limits of it appear as an integral part, spaces that lack of a clear role. Their meaning is continuously open to the formulation and often emerges "randomly" from the event of occasional events. What may make the acceptance of the void as a key element in an urban structure and under what conditions this (urban space) can be determined? The absence of a building in an area of the city is not enough for giving him the concept of 'urban void'. Spaces that can be characterized by a specific function or they serve an aesthetic point of view, and particularly in any case characterized by contents of the "filled" with interesting or indifferent actions of everyday life within cannot be defined as urban voids. Instead it could be seen to what extent, and even buildings are urban voids in conditions devoid of above characteristics. The voids are derivatives of unforeseeable transformations of the city. Their presence creates strange feelings. It could be seen as a reaction to the body of the city or a collateral development. So, which is the aesthetic perception of the urban voids of the escalator area? What defines them as voids? They are places? Or non- places? Do they have potentials to be filled with a specific function and which is the best solution? To be an integral part of the city or a parasitical formation of spaces? The site of the escalators is a mosaic of non-places, a mixture of different micro worlds with an escalator system to penetrate them and automatically define them as a performance. People who travel with the escalators are the viewers of the performance. Those who use the micro worlds, the performers, experience the semi-private spaces. But what exactly is the role of public space in this area? How can we re-define the new Hong Kongian public space under the new conditions of neo-liberalism? Which is the part of these urban voids inside this interrogation and redefinition of the public space? In conclusion, how we should treat these urban voids in order to serve the new re-defined feeling of Hong Kong? Goal The purpose of this project is to re- question and to re- defines the urban feeling of the Hong Kong through the re- formation of the urban voids of the escalators- area.dsd. architecture thinkingArchitectureArchitectur
"...son Lisidora/ che s'ange e s'addolora": la madre di Don Giovanni e altre ombre,
No full textAnalisi del "Nuovo risarcito Convitato di pietra" di G.B. Andreini con particolare attenzione all'invenzione di una madre di Don Giovanni che compare come ombra, fantasma, di qui diverse considerazioni sulle funzioni delle apparizioni nel teatro del Cinque e SeicentoAnalyzing the role of Don Giovanni's mother in the "Nuovo risarcito Convitato di pietra" by the commedia dell'arte author G.B. Andreini, the purpose is to define the use of specters in XVIth and XVIIth century theate
Aspects cliniques et thérapeutiques du strabisme divergent intermittent de l'enfant à Abidjan
No full textIntroduction : Le strabisme divergent intermittent (SDI) est une entité clinique fréquente en ophtalmologie pédiatrique, associée à des altérations fonctionnelles et esthétiques significatives. Cette étude vise à décrire les caractéristiques cliniques et thérapeutiques du SDI chez l'enfant. Méthode : Une analyse rétrospective a été menée sur une population pédiatrique d’Afrique subsaharienne ayant un SDI en évaluant les données sociodémographiques, les caractéristiques du strabisme, les amétropies associées, la stratégie de prise en charge. Résultat : La prévalence hospitalière du strabisme de l’enfant était de 9,75% dont 57,74% de SDI. La moyenne d’âge était de 3,47 ± 2,48 ans dont 52,8% âgé de 2 à 6 ans. Ce strabisme était précoce dans 35,8% et tardif dans 34,1%. Le SDI était unilatéral dans 43,1% associé à une amétropie dans 36,6% et une anisométropie dans 22,8%. On notait un astigmatisme myopique dans 42,3% majoritairement de degré faible à modéré. L’anisométropie astigmatisme représentait 50%. L’amblyopie qui s’y associait dans 14,6% était d’origine fonctionnelle chez 88,9 % des patients. Elle était profonde dans 33,3% et modérée dans 50% des cas. La correction optique totale a été prescrite chez tous les enfants. Conclusion : Le diagnostic tardif observé souligne la nécessité d'un dépistage précoce. L'association fréquente du SDI et des vices réfractifs dans notre contexte africain justifie une correction optique totale systématique. La variabilité des approches thérapeutiques reflète l'absence de consensus sur les critères de prise en charge.
Introduction: Intermittent divergent strabismus (IDS) is a common clinical condition in paediatric ophthalmology, associated with meaningful functional and aesthetic alterations. This study aims to describe the clinical and therapeutic characteristics of IDS in children. Method: A retrospective analysis was conducted on a paediatric population in sub-Saharan Africa with IDS, evaluating sociodemographic data, strabismus characteristics, associated ametropia, and management strategy. Results: The hospital prevalence of strabismus in children was 9.75%, of which 57.74% were IDS. The average age was 3.47 ± 2.48 years, with 52.8% aged between two and six years. This strabismus had an early onset in 35.8% and a late onset in 34.1%. IDS was unilateral in 43.1% of cases, associated with ametropia in 36.6% and anisometropia in 22.8%. Myopic astigmatism was noted in 42.3% of cases, mostly mild to moderate. Anisometropia astigmatism accounted for 50%. Amblyopia, which was associated with it in 14.6% of cases, was functional in 88.9% of patients. It was profound in 33.3% and moderate in 50% of cases. Total optical correction was prescribed for all children. Conclusion: The late diagnosis observed highlights the need for early screening. The frequent association of IDS and refractive errors in our African context justifies systematic total optical correction. The variability of therapeutic approaches reflects the lack of consensus on management criteria.  
Author Correction: Accelerated western European heatwave trends linked to more-persistent double jets over Eurasia
No full textCorrection to: Nature Communications, published online 04 July 2022 The original version of this Article contained an error in Figure 5c, and Supplementary Figures 6c, 7c, and 8c, in which the y-axis was incorrectly plotted up to a lower maximum value and resulted in one data point missing. In the corrected versions, the y-axis has been extended to higher values and include the missing data point. This has been corrected in both the PDF and HTML versions of the Article. The HTML has been updated to include a corrected version of the Supplementary Information. The original version of this Article contained an error in the Author Contribution section, which incorrectly read ‘E.R., D.C., K.K., G.B.-.A. and F.C. contributed to the interpretation of the results and the final form of the manuscript.’ The correct version states ‘E.R., D.C., K.K., G.B.-.A. and F.L. contributed to the interpretation of the results and the final form of the manuscript.’ This has been corrected in both the PDF and HTML versions of the Article.</p
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