Chimney-pot papers /

"Reprinted from the Unpopular review and Century magazine."

Dreamthorp: a book of essays written in the country.

Dreamthorp.-On the writing of essays.-Of death and the fear of dying.-William Dunbar.-A lark's flight. -Christmas.-Men of letters.-On the importance of a man to himself.-A shel in my bookcase.-Geoffrey Chaucer. -Books and gardens.-On vagabonds.

Friendship and happiness,

Formerly pub. under title "The feast of St. Friend."

Charles Dickens library... with 1200 illustrations, including five hundred special plates

"Edited by J. A. Hammerton."

Organ repertoire : a book of pipe organ music for church and concert /

(cont.): Cradle song : berceuse / Walter Spinney -- Andantino from Fantasia in C minor / W.A. Mozart -- Marche de fête / Edgar A. Barrell -- Minster march : from Lohengrin / R. Wagner -- Sunrise : op. 7, no. 1 / Sigfrid Karg-Elert -- Song without words = Chant sans paroles : op. 2, no. 3 / P. Tschaikowsky -- Prayer on motives from R. Wagner's Lohengrin : op. 54 / B. Sulze -- Festal march : op. 67, no. 8 / E.R. Kroeger -- Christmas march / G. Merkel -- Duke Street : postlude II / Geo. E. Whiting -- Canzonetta from the Raymond overture / A. Thomas -- Anniversary march : introducing Auld lang syne : op. 10 / J. Lawrence Ebb -- Two cradle songs = Zwei Wiegenliedchen / Herbert Botting -- Minuet from the overture to Berenice / G.F. Handel -- Funeral march = Marche funèbre : op. 35 / Franz Chopin -- March in B♭ / Wm. Faulkes -- The Son of God goes forth to war : postlude VI / Geo. E. Whiting -- Nocturne des anges : op. 18, no. 1 / George F. Vincent -- Hosanna! / Paul Wachs -- Roumanian bridal march / Herbert W. Wareing.

The writings of Charles Dickens,

Half-title.

Homiliarium veronense /

"This edition presents a collection of eleven homiletic pieces found in a single manuscript which probably dates from the early ninth century, Cod. LXVII (64) of the Biblioteca Capitolare of Verona. The homiletic collection, on fols. 33r-81v ... The Verona Homily Collection is made up of eleven pieces which concern only the portion of the liturgical year from Christmas to Pentecost"--P. [vii].

Cataloging as an asset; an address to the New York State Library School, May 1, 1915.

On cover: From G. K. Hall & Co. with all good wishes at Christmas MCMLXVIII.

Roast beef medium; the business adventures of Emma McChesney,

Roast beef medium.--Representing T. A. Buck.--Chickens.--His mother's son.--Pink tights and ginghams.--Simply skirts.--Underneath the high-cut vest.--Catching up with Christmas.--Knee-deep in knickers.--In the absence of the agent.

Friendship's offering and winter's wreath

"A Christmas and New Year's present."

Turbulent years,

"Second printing."

Videophone support for an eight-year-old boy undergoing paediatric bone marrow transplantation

We report the use of an Internet-based videophone to support a child undergoing bone marrow transplantation (BMT). Over the Christmas period, an eight-year-old boy with an underlying diagnosis of attention-deficit/hyperactivity disorder (ADHD) and a history of absconding and aggressive non-compliant behaviour was treated by BMT. We installed an Internet-based videophone in the patient's hospital room two days post-transplant. A second videophone was installed in the patient's home and used the existing home telephone line. In all, 14 videophone calls were made over a nine-day period. The videophone improved interfamily social and emotional support, and appeared to reduce some of the inherent anxiety and distress resulting from paediatric bone marrow transplantation.

ESTUDO DAS FORMAS E DIMENSÕES LINGUAIS DAS ARCADAS DENTÁRIAS EM INDIVÍDUOS BRASILEIROS COM OCLUSÃO NORMAL

A preocupação com o estudo das formas e dimensões das arcadas dentárias sempre esteve presente na ciência ortodôntica. Para a Ortodontia Lingual, que surgiu no final da década de 70, o primeiro artigo publicado foi o Fujita, onde relatou sobre a forma do arco a ser utilizado nesta técnica, a forma de cogumelo. Apesar de estar sendo divulgada de uma maneira mais intensa nestes últimos anos como uma solução estética definitiva e eficaz, o enfoque dos estudos sobre esta técnica tem sido a fabricação de novos materiais, técnicas de montagem do aparelho lingual e soluções clínicas, com poucas menções sobre a morfologia das arcadas dentárias. O presente trabalho tem a finalidade de estudar as formas e dimensões linguais das arcadas dentárias de indivíduos leucodermas com oclusão normal. Foram utilizados 47 pares de modelos de gesso de oclusão normal digitalizados pela face olcusal, previamente desgastadas até o terço médio da coroa para proporcionar melhor visualização. Por meio do programa CorelDraw 12 foram determinados pontos de referências e criados alguns pontos virtuais necessários para a realização das medidas. Os resultados determinaram três formas das arcadas dentárias linguais: cogumelo, árvore de Natal e mista. A maior prevalência foi a forma árvore de Natal, mas quando analisadas separadamente as arcadas dentárias linguais, encontrados no superior, maior prevalência da forma de cogumelo e no inferior da forma árvore de Natal. Conseqüentemente, esta foi a combinação mais prevalente entre as arcadas dentárias linguais superiores e inferiores. Propusemos diagramas para conformação de arcos ortodônticos linguais com base nos valores obtidos da amostra, determinando-se o quartil 1, mediana e quartil 3, como definidores dos tamanhos pequeno, médio e grande.

Seeing light vs dark lines: psychophysical performance is based on separate channels, limited by noise and uncertainty

Visual detection performance (d') is usually an accelerating function of stimulus contrast, which could imply a smooth, threshold-like nonlinearity in the sensory response. Alternatively, Pelli (1985 Journal of the Optical Society of America A 2 1508 - 1532) developed the 'uncertainty model' in which responses were linear with contrast, but the observer was uncertain about which of many noisy channels contained the signal. Such internal uncertainty effectively adds noise to weak signals, and predicts the nonlinear psychometric function. We re-examined these ideas by plotting psychometric functions (as z-scores) for two observers (SAW, PRM) with high precision. The task was to detect a single, vertical, blurred line at the fixation point, or identify its polarity (light vs dark). Detection of a known polarity was nearly linear for SAW but very nonlinear for PRM. Randomly interleaving light and dark trials reduced performance and rendered it non-linear for SAW, but had little effect for PRM. This occurred for both single-interval and 2AFC procedures. The whole pattern of results was well predicted by our Monte Carlo simulation of Pelli's model, with only two free parameters. SAW (highly practised) had very low uncertainty. PRM (with little prior practice) had much greater uncertainty, resulting in lower contrast sensitivity, nonlinear performance, and no effect of external (polarity) uncertainty. For SAW, identification was about v2 better than detection, implying statistically independent channels for stimuli of opposite polarity, rather than an opponent (light - dark) channel. These findings strongly suggest that noise and uncertainty, rather than sensory nonlinearity, limit visual detection.

Depth propagation and surface construction in 3-D vision

Motion discontinuities can signal object boundaries where few or no other cues, such as luminance, colour, or texture, are available. Hence, motion-defined contours are an ecologically important counterpart to luminance contours. We developed a novel motion-defined Gabor stimulus to investigate the nature of neural operators analysing visual motion fields in order to draw parallels with known luminance operators. Luminance-defined Gabors have been successfully used to discern the spatial-extent and spatial-frequency specificity of possible visual contour detectors. We now extend these studies into the motion domain. We define a stimulus using limited-lifetime moving dots whose velocity is described over 2-D space by a Gabor pattern surrounded by randomly moving dots. Participants were asked to determine whether the orientation of the Gabor pattern (and hence of the motion contours) was vertical or horizontal in a 2AFC task, and the proportion of correct responses was recorded. We found that with practice participants became highly proficient at this task, able in certain cases to reach 90% accuracy with only 12 limited-lifetime dots. However, for both practised and novice participants we found that the ability to detect a single boundary saturates with the size of the Gaussian envelope of the Gabor at approximately 5 deg full-width at half-height. At this optimal size we then varied spatial frequency and found the optimum was at the lowest measured spatial frequency (0.1 cycle deg-1 ) and then steadily decreased with higher spatial frequencies, suggesting that motion contour detectors may be specifically tuned to a single, isolated edge.