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40 results on '"Nicholas Phelps"'

1. Consumer Acceptability of Aquaponically Grown Basil

Author

Chengyan Yue, Zata Vickers, Jingjing Wang, Neil O. Anderson, Lauren Wisdorf, Jenna Brady, Michele Schermann, Nicholas Phelps, and Paul Venturelli

Subjects
cyprinus carpio (koi), deep water culture, ebb and flow, greenhouse, warehouse, Plant culture, SB1-1110
Abstract

The present study systematically investigated the effects of warehouse and greenhouse aquaponic growing conditions on consumer acceptability of different basil cultivars. A total of 105 consumers rated their liking of three basil cultivars (Nufar, Genovese, and Eleonora), each grown in three conditions (aquaponically in a greenhouse, aquaponically in a warehouse, both with Cyprinus carpio, Koi fish, and grown in soilless medium). We used linear random effect models to investigate consumer preferences for attributes of basil plants grown in different environments by controlling for individual-specific random effects. Participants generally liked the soilless medium–grown and greenhouse aquaponically grown basil plants more than the warehouse aquaponically grown plants. The soilless medium–grown basil had the highest appearance liking and flavor intensity, followed by the greenhouse aquaponic grown and then by the warehouse aquaponic grown. Aquaponically grown cultivars were rated less bitter than soilless medium–grown cultivars.

Published
2020
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2. Science Spaces as ‘Ethnoscapes’: Identity, Perception and the Production of Locality

Author

Dave Valler, Nicholas Phelps, Julie Tian Miao, Paul Benneworth, and Franziska Eckardt

Subjects
Science ‘scapes, ethnoscapes, transnationalism, locality, scientific culture and identity, Geography. Anthropology. Recreation, Social Sciences
Abstract

Science and technology spaces around the world are, simultaneously, major physical, technological and symbolic forms, key elements of economic strategy, and sites of international labour movements and knowledge transfer. They are thus the product of multiple imaginations, with multiple, potentially divergent, objectives. In this paper, we compare three international science spaces as ‘ethnoscapes’, emphasising the distinctive perceptions, cultures and identities amongst international science and technology migrants and visitors at these sites. This, we contend, sharpens a sense of the ‘international-ness’ of science spaces in various dimensions, given the particular experiences of scientific migrants and visitors moving into different nations, locations and facilities, their roles in constructing international communities, and their navigation of alternative spaces. It also offers insight into the production of contextual (rather than spatial or physical) localities, as international scientists and technologists experience and constitute larger formations, building on their perceptions of varied and interacting science ’scapes.

Published
2019
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3. POST-SOCIALIST POST-SUBURBIA: GROWTH MACHINE AND THE EMERGENCE OF 'EDGE CITY' IN THE METROPOLITAN CONTEXT OF MOSCOW

Author

Oleg Golubchikov, Alla Makhrova, and Nicholas Phelps

Subjects
suburbanization, satellite city, khimki, moscow city-region, Geography (General), G1-922
Abstract

To what extent do the ideas of “edge city”, “post-suburbia” and associated models of urban growth apply in the transition economy case? The paper considers urban development and place-making on the periphery of Moscow, based on the case of Khimki, a former off-limits “satellite city” and more recently a fast-growing area. The forces and ideologies driving the growth on the edge of Moscow and the relationship between different actors are considered. The paper argues that while the Russian case shares some commonalities with the Western models of “edge city” and “growth machine”, growth in Khimki is fuelled by opportunistic profit-making initiatives that are disconnected from “local” city. It is yet to be seen whether a growing demand for new infrastructure, as well as emerging residents’ movements will restructure the modes of governing urban growth more in line with proactive place-focused post-suburban politics.

Published
2010
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6. Not waving but drowning

Author

Nicholas Phelps

Subjects
Geography, Planning and Development
Abstract

Disciplinary perspectives on the city and its materiality are as splintered as the contemporary city itself. This forum article offers a sympathetic critique of planning's contributions to discussions of the compact city idea. However, it also reproduces some of the misconceptions geography and planning scholars have of each other and their work in which waving is mistaken for drowning.

Published
2022

7. E-commerce: A platform for local economic development? Evidence from Taobao Villages in Zhejiang Province, China

Author

Nicholas Phelps, Cassandra Wang, Julie T Miao, and Jia Zhang

Abstract

In contrast to the one village one product (OVOP) and joint action (JA) models, e-commerce disintermediation is the focus of the Taobao village (TV) model pioneered in China. Drawing on original questionnaire survey data of village heads’ perceptions of the adoption of the TV model in 300 Taobao villages in Zhejiang province, we investigate: (1) the significance of the TV phenomenon; (2) the perceived benefits and disbenefits of the adoption of the Taobao business model on villages; (3) and the institutionalisation of the TV model. While the TV model remains weakly institutionalised, its effects appear to exceed those of the OVOP and JA models when raising rural employment and incomes but also appearing to promote selected dynamic economic gains and elements of diversification of livelihoods.

Published
2022

9. Conclusion

Author

Nicholas Phelps, Anna Hurlimann, and Judy Bush

Published
2022

13. Boosting monte carlo rendering by ray histogram fusion

Author

Mauricio Delbracio, Nicholas Phelps, Jean-Michel Morel, Pablo Musé, Julien Chauvier, and Antoni Buades

Subjects
Boosting (machine learning), Statistical distance, Pixel, business.industry, Global illumination, Monte Carlo method, Computer Graphics and Computer-Aided Design, Rendering (computer graphics), Adaptive filter, Histogram, Computer vision, Artificial intelligence, business, Mathematics
Abstract

This article proposes a new multiscale filter accelerating Monte Carlo renderer. Each pixel in the image is characterized by the colors of the rays that reach its surface. The proposed filter uses a statistical distance to compare with each other the ray color distributions associated with different pixels, at each scale. Based on this distance, it decides whether two pixels can share their rays or not. This simple and easily reproducible algorithm provides a psnr gain of 10 to 15 decibels, or equivalently accelerates the rendering process by using 10 to 30 times fewer samples without observable bias. The algorithm is consistent, does not assume a particular noise model, and is immediately extendable to synthetic movies. Being based on the ray color values only, it can be combined with all rendering effects.

Published
2014

14. The Planning Imagination : Peter Hall and the Study of Urban and Regional Planning

Author

Mark Tewdwr-Jones, Nicholas Phelps, Robert Freestone, Mark Tewdwr-Jones, Nicholas Phelps, and Robert Freestone

Subjects
City planning--Great Britain, City planning, Regional planning--Great Britain, Regional planning
Abstract

Knighted in 1998 ‘for services to the Town and Country Planning Association', and in 2003 named by Her Majesty Queen Elizabeth II as a ‘Pioneer in the Life of the Nation', Peter Hall is internationally renowned for the breadth and depth of his studies and writings on urban and regional planning. For the last 50 years, he has captured and helped to create the ‘planning imagination'.Here the editors have brought together in five themes a series of critical reflections on Peter's vast and diverse contributions. Those reflections are provided by colleagues familiar with his work. The five parts are devoted to Peter Hall's breadth of academic work, covering the history of cities and planning, London, spatial planning, connectivity and mobility, and urban globalization. Finally, as a sixth part, the editors have asked Peter Hall himself to reflect on his career and the sources of his imagination.The story this book tells is not one of a singular, totally consistent theoretical and philosophical view elaborated over several decades. Rather it covers a set of views that necessarily admits signs of Peter's inconsistency and imperfection over the years – the insights and imperfections that inevitably accompany the exercise of a nonetheless remarkably fertile, restless and inspiring planning imagination.

Published
2014

15. Reviews

Author

Nicholas Phelps, Amanda Root, and Pete North

Subjects
General Economics, Econometrics and Finance
Published
2001

16. Life-threatening conditions - Part 1

Author

Brown, Nicholas Phelps

Subjects
Optometrists -- Practice, Optometrists -- Safety and security measures, Ophthalmologists -- Practice, Eye diseases -- Causes of, Eye diseases -- Risk factors, Eye diseases -- Care and treatment, Intracranial aneurysms -- Risk factors, Intracranial aneurysms -- Diagnosis, Intracranial aneurysms -- Care and treatment, Arteritis -- Causes of, Arteritis -- Risk factors, Arteritis -- Care and treatment, Patients -- Care and treatment, Patients -- Analysis, Business, Business, international, Health care industry
Abstract

In the first of two articles, Nicholas Phelps Brown describes life-threatening conditions which all eye care practitioners need to be aware of Patients occasionally present to the optometrist with life-threatening [...]

Published
2005

17. Unequal pupils

Author

Brown, Nicholas Phelps

Subjects
Eye diseases -- Care and treatment, Eye diseases -- Diagnosis, Pupil (Eye) -- Physiological aspects, Business, Business, international, Health care industry
Abstract

Nicholas Phelps Brown explains the nervous pathways and advises the use of drops to help diagnose causative factors of unequal pupils The left and right pupils are commonly closely equal [...]

Published
2003

18. Whiplash and damage to the visual function

Author

Brown, Nicholas Phelps

Subjects
Whiplash injuries -- Care and treatment, Eye -- Injuries, Health care industry -- Services, Optometry -- Practice, Business, Business, international, Health care industry
Abstract

Nicholas Phelps Brown discusses damage to the visual function that can result from a whiplash injury and describes the examination of the patient for evidence of vitreous detachment The optometrist [...]

Published
2002

19. Amaurosis fugax - a review

Author

Brown, Nicholas Phelps

Subjects
Ophthalmology -- Diseases, Business, Business, international, Health care industry
Abstract

Nicholas Phelps Brown discusses the nature and the causes of amaurosis fugax, a fleeting loss of vision resulting from a temporary interruption of blood flow to the retina or optic [...]

Published
2002

21. Book review

Author

Nicholas Phelps

Subjects
Geography, Planning and Development
Published
1998

24. The lens is more sensitive to radiation than we had believed

Author

Nicholas Phelps Brown

Subjects
medicine.medical_specialty, genetic structures, business.industry, Cataract formation, medicine.disease, eye diseases, Sensory Systems, Cellular and Molecular Neuroscience, Ophthalmology, medicine.anatomical_structure, Cataracts, Medicine, Optometry, Human eye, sense organs, business, Atomic Bombs, β radiation, Lens crystalline
Abstract

The lens of the eye has long been recognised to be one of the most radiosensitive regions of the body, but our knowledge concerning the minimal dose needed to cause cataract in the human eye has been scanty. This knowledge had advanced little since the available data of the day were reviewed by Merriam and colleagues in 1972.1A number of studies in the past have looked at cataract formation at various times after the event of radiation and estimation of the dose received by the eye has often been inexact as a result of inadequate data. In the survivors of the atomic bombs the estimation has necessarily been crude. With the less penetrant radiations, such as β radiation, the dimensions of the eye impose their own problems in the estimation of the dose to the lens.2 In 1991 Calissendorff et al 3 showed that …

Published
1997

26. Analysis of human crystalline lens curvature as a function of accommodative state and age

Author

George H. Handelman, Jane F. Koretz, and Nicholas Phelps Brown

Subjects
Adult, Curvature, Radius of curvature (optics), law.invention, Optics, law, Lens, Crystalline, Photography, medicine, Humans, Child, Physics, business.industry, Age Factors, Accommodation, Ocular, Presbyopia, Middle Aged, medicine.disease, Sensory Systems, Ophthalmology, Linear relationship, Hourglass, business, Arc length, Accommodation
Abstract

Slit-lamp photographs from four human subjects, aged 11, 19, 29, and 45 were reanalyzed using computer-based digitization and curve-fitting methods in order to obtain more complete information on internal lens curvature changes during accommodation. All discernible curves (N = 742) could be fit to parabolas with χ2 less than or equal to 0.001 irrespective of lens age, accommodative state, or curve location within the lens. For each lens, the coefficients of the parabolas, when displayed in graphic form, exhibit a linear relationship between location within the lens and the coefficient of the χ2 term. The slope of this line remains unchanged over accommodation for a given lens, but is shifted in position. The slope changes as a function of age. The age 45 lens exhibits these characteristics to a limited extent only, the differences possibly related to the development of presbyopia. The further a given curve is located from the lens surface, the smaller the region of its arc that can be considered approximately circular. A roughly hourglass figure is generated by these circular bounds; the waist of the hourglass decreases with increasing accommodation, since changes in radius of curvature with accommodation are more pronounced internally. Calculations of arc lengths as a function of increasing accommodation indicate that these lengths change very little over the entire accommodative range.

Published
1984

28. lifestyle and glaucoma.

Author

Brown, Nicholas Phelps

Subjects
*VISION disorders, *OPEN-angle glaucoma, *CATARACT, *RETINAL degeneration, *OPTIC nerve diseases, *EYE diseases, *DISEASE risk factors
Abstract

The article discusses several lifestyle external factors relating to the development of primary open-angle glaucoma (POAG). It indicates that the effects of lifestyle on the development of cataract and age-related macular degeneration (AMD) was due to poor diet, smoking, and sun exposure. Further, it mentions that field of vision loss in POAG has resulted to axonal death in the optic nerve.

Published
2010

29. The significance of the subcapsular clear zone.

Author

Brown, Nicholas Phelps

Subjects
*CATARACT, *INTRAOCULAR lenses, *EYE diseases, *OPTICAL fibers, *CRYSTALLINE lens diseases
Abstract

The article discusses the importance of the subcapsular clear zone. In the case of the lens, the fibres of the clear zone pass into the lens and increase their reflectivity as they mature to become C1 beta. The clear zone serves as a barometer of lens health and its absence indicates an unhealthy lens and in the presence of cataract in this lens the absence of the clear zone indicates that the cataract is progressive. Several multiple choice questions on clear zone are also given.

Published
2008

30. Glare.

Author

Brown, Nicholas Phelps

Subjects
*GLARE, *REFRACTION (Optics), *OPTICAL reflection, *OPTICS, *LIGHT scattering
Abstract

The article presents information on the classification and causes of glare. Glare is produced by optical imperfections in the refractive media of the eye which consist of the tear film, the corneal epithelium, the corneal stroma, the corneal endothelium, the aqueous, the anterior lens capsule, the lens substance, the posterior lens capsule and the vitreous. The halo is a ring of light emanating from a point light source with a dark circle immediately surrounding the light and then a bright ring, as in the halo depicted in a religious icon.

Published
2007

31. A Guide to Medical Photography

Author

Nicholas Phelps Brown

Subjects
Cellular and Molecular Neuroscience, Ophthalmology, medicine.medical_specialty, Book Reviews, business.industry, medicine, Library science, Medical photography, business, Sensory Systems
Published
1980

32. Macropsia/micropsia.

Author

Brown, Nicholas Phelps

Subjects
*EYE diseases, *OPHTHALMOLOGY, *VISION disorders, *PERCEPTUAL disorders, *VISUAL perception
Abstract

The article discusses the potential implications of exhibiting macropsia and micropsia symptoms. It mentions that macropsia is the perception that an object larger than it is while in micropsia, the object appears to be smaller. It adds that causes of the phenomena include optical, accommodational, and retinal. Moreover, it details the causes of the phenomena and presents suggested corrective measures.

Published
2010

33. Heterochromia.

Author

Brown, Nicholas Phelps

Subjects
*EYE color, *IRIS (Eye), *MELANINS, *EPITHELIUM, *RAYLEIGH scattering, *EYE diseases
Abstract

The article focuses on the causes of the different eye colour and their clinical implications. The iris colour depends on the melanin pigment present in the iris stroma and the pigment epithelium on the posterior surface of the iris. Iris has no coloured pigments other than melanin to account for the blue, hazel, green and grey colours which occur due to Rayleigh scattering. Comments on the disease hetrochromia that is due to the differences in the eye colour of an individual, are also included

Published
2009

34. Headaches: from the benign to the sinister.

Author

Brown, Nicholas Phelps

Subjects
*HEADACHE, *OPTOMETRISTS, *EYE diseases, *NEUROLOGICAL disorders, *PATHOLOGY, *DIAGNOSIS
Abstract

The article focuses on headaches experienced by eye patients. The vast majority of headaches are harmless. An optometrist is uniquely equipped with the knowledge and with the instrumentation to diagnose serious pathology that should not be missed out. Primary benign headaches with no underlying pathology account for the symptoms of 90 per cent of all headache sufferers. Secondary headaches are sinister and are accounted for by an underlying pathology. Some of types of headaches include painful eye conditions and neurological conditions.

Published
2008

35. Essential fatty acids and eye health.

Author

Brown, Nicholas Phelps

Subjects
*ESSENTIAL fatty acids, *OMEGA-3 fatty acids, *FATTY acids, *EYE care, *MEIBOMIAN glands, *TEARS (Body fluid)
Abstract

The article focuses on the importance of essential fatty acids (EFA) to eye health. The ways in which EFA benefit the eye are mentioned. The characteristics of omega-3 and omega-6 fatty acids are compared. The roles of fatty acids in the eye development, meibomian gland function and tear production are discussed.

Published
2006

36. Life-threatening conditions -- Part 2.

Author

Brown, Nicholas Phelps

Subjects
*EYE diseases, *CELLULITIS, *EXOPHTHALMOS, *PATIENTS, *VISION disorders
Abstract

Presents information on various eye diseases. Occurrence of orbital cellulitis in patients; Description of acute proptosis due to orbital hemorrhage; Presence of papilloedema in the eye.

Published
2005

37. letters.

Author

Brown, Nicholas Phelps, Coe, Peter, Cooper, Mike, and Rees, Philip

Subjects
*LETTERS to the editor, *EYEGLASSES, *DATABASES, *BIFOCAL lenses, *OPTICAL trade
Abstract

This section presents several letters to the editor. The letter by Nicholas Phelps Brown talked about Specsavers glasses to avoid running over hedgehogs. The letter by Philip Rees talked about a database program for Patient Recall and the letter by Mike Cooper talked about an Onyx frame in fitting glass bifocals for African patients.

Published
2006

38. Letters.

Author

Kerr, Christopher, Baker, Arthur A, Cooper, Mike, and Brown, Nicholas Phelps

Subjects
LETTERS to the editor, NURSE practitioners, VISUAL training, OPTOMETRY career counseling
Abstract

Several letters to the editor are presented in response to articles in previous issues including the photograph of a practitioner who was about to administer a bulbar injection incorrectly with the patient almost fixating the needle, the article about optometry as a profession, and the Luxottica Group SpA sales policies.

Published
2010

39. Letters.

Author

Jenkins, Ri, Brown, Nicholas Phelps, and Cregor, Rosalind

Subjects
*LETTERS to the editor, *OPTICIANS, *ORGANIZATIONAL name changes, *RETINA, *EQUIPMENT & supplies
Abstract

Several letters to the editor are presented in response to previous articles including the apathy of dispensing opticians (DOs) on the name change in the October 16, 2009 issue, the Optomap images in the October 23, 2009 issue, and the obituary for optometrist Norman Cregor in the October 9, 2009 issue.

Published
2009

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