Additional Dimension (additional + dimension)

Distribution by Scientific Domains


Selected Abstracts


Shadow-Experiences and the Phenomenal Structure of Colors

DIALECTICA, Issue 2 2010
René Jagnow
It is a common assumption among philosophers of perception that phenomenal colors are exhaustively characterized by the three phenomenal dimensions of the color solid: hue, saturation and lightness. The hue of a color is its redness, blueness or yellowness, etc. The saturation of a color refers to the strength of its hue in relation to gray. The lightness of a color determines its relation to black and white. In this paper, I argue that the phenomenology of shadows forces us to consider illumination as an additional dimension of phenomenal colors. For this purpose, I will first introduce two different interpretations of shadow-experiences, which Chalmers has called the simple and the complex interpretations, and show that they both fail to account for important phenomenal facts about shadow-experiences. I will then introduce my own alternative interpretation based on the idea that illumination is a dimension of phenomenal colors and explain how it can account for these facts. [source]


The impact of stomatological disease on oral health-related quality of life

EUROPEAN JOURNAL OF ORAL SCIENCES, Issue 4 2003
Carrie Diane Llewellyn
The clinical diagnosis of stomatological disease may indicate its cause and prognosis; however, it says little about the resulting level of impairment from the patient's perspective. The primary objective of this study was to test whether patients attending an outpatient oral medicine clinic would have worse oral health related quality of life (OHR-QoL) compared with the general population. In addition, we aimed to assess whether anxiety or depression could be predicted by OHR-QoL and to explore the relationship between clinical diagnoses, OHR-QoL and anxiety/depression. Data were collected from patients (n = 97) through face-to-face interviews using the Oral Health Impact Profile Short form (OHIP-14) to measure OHR-QoL, the Hospital Anxiety and Depression Scale (HADS) for psychiatric morbidity, and a visual analogue scale for self-rated general health. Age- and sex-matched controls (n = 388) were provided from a normative data set collected in a UK national survey in 1998. Participants had significantly lower OHR-QoL scores than the general population on all domains and overall OHR-QoL scores. Of the variance in anxiety, 55% was predicted by general health ratings and OHR-QoL domains of ,psychological discomfort' and ,psychological disability'. Of the variance in depression, 54% was predicted by general health ratings and OHR-QoL domains of ,functional limitation' and ,social disability'. Patient centred, routine assessment of OHR-QoL provides an additional dimension that may help to improve awareness of the impact of disease on the individual's life and enhance the clinical decision-making process. [source]


Linear peak capacity of a comprehensive multi-dimensional separation

JOURNAL OF SEPARATION SCIENCE, JSS, Issue 19 2008
Leonid M. Blumberg
Abstract In order to resolve (quantifiably and identifiably separate) the same number of peaks in the analysis of the same mixture yielding statistically uniform peak distribution, a comprehensive 2-D separation needs a two times larger peak capacity than a 1-D separation does. Each additional dimension further reduces the utilization of the peak capacity of comprehensive multi-dimensional (MD) separation by a factor of two per dimension. As a result, the same peak capacity means different things for separations with different dimensionalities. This complicates the use of the peak capacity for comparison of the potential separation performance of the separations with different dimensionalities. To facilitate the comparison, a concept of a linear peak capacity has been proposed. The linear peak capacity of an MD separation is the peak capacity of a 1-D separation that, in the analysis of the same mixture, is statistically expected to resolve the same number of peaks as the MD separation is. There are other factors that differently affect the performance of the separations that have different dimensionalities. Peak capacity of a 2-D separation with a rectangular separation space is 27% larger than the product of the peak capacities of its first and second dimension. This advantage of a 2-D separation is essentially nullified by the fact that the peak capacity of the first dimension of an optimized 2-D separation cannot be higher than 80% of the peak capacity of its first dimension standing alone. All in all, the incremental peak capacity gained from addition of a second dimension will not exceed 50% of the peak capacity of the added second dimension. All results are valid for arbitrarily shaped (not necessarily Gaussian) peaks. [source]


DEFINING STANDARD OF CARE IN THE DEVELOPING WORLD: THE INTERSECTION OF INTERNATIONAL RESEARCH ETHICS AND HEALTH SYSTEMS ANALYSIS

DEVELOPING WORLD BIOETHICS, Issue 2 2005
ADNAN A. HYDER
ABSTRACT In recent years there has been intense debate regarding the level of medical care provided to ,standard care' control groups in clinical trials in developing countries, particularly when the research sponsors come from wealthier countries. The debate revolves around the issue of how to define a standard of medical care in a country in which many people are not receiving the best methods of medical care available in other settings. In this paper, we argue that additional dimensions of the standard of care have been hitherto neglected, namely, the structure and efficiency of the national health system. The health system affects locally available medical care in two important ways: first, the system may be structured to provide different levels of care at different sites with referral mechanisms to direct patients to the appropriate level of care. Second, inefficiencies in this system may influence what care is available in a particular locale. As a result of these two factors locally available care cannot be equated with a national ,standard'. A reasonable approach is to define the national standard of care as the level of care that ought to be delivered under conditions of appropriate and efficient referral in a national system. This standard is the minimum level of care that ought to be provided to a control group. There may be additional moral arguments for higher levels of care in some circumstances. This health system analysis may be helpful to researchers and ethics committees in designing and reviewing research involving standard care control groups in developing country research. [source]


Lexical studies of Filipino person descriptors: adding personality-relevant social and physical attributes

EUROPEAN JOURNAL OF PERSONALITY, Issue 4 2008
Shellah Myra Imperio
Abstract Lexical studies have focused on traits. In the Filipino language, we investigated whether additional dimensions can be identified when personality-relevant terms for social roles, statuses and effects, plus physical attributes, are included. Filipino students (N,=,496) rated themselves on 268 such terms, plus 253 markers of trait and evaluative dimensions. We identified 10 dimensions of social and physical attributes,Prominence, Uselessness, Attractiveness, Respectability, Uniqueness, Destructiveness, Presentableness, Strength, Dangerousness and Charisma. Most of these dimensions did not correspond in a one-to-one manner to Filipino or alternative trait models (Big Five, HEXACO, ML7). However, considerable redundancy was observed between the social and physical attribute dimensions and trait and evaluative dimensions. Thus, social and physical attributes communicate information about personality traits, and vice versa. Copyright © 2008 John Wiley & Sons, Ltd. [source]


Gravitational lensing by cosmic strings: what we learn from the CSL-1 case

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Issue 4 2007
M. V. Sazhin
ABSTRACT Cosmic strings were postulated by Kibble in 1976 and, from a theoretical point of view, their existence finds support in modern superstring theories, both in compactification models and in theories with extended additional dimensions. Their eventual discovery would lead to significant advances in both cosmology and fundamental physics. One of the most effective ways to detect cosmic strings is through their lensing signatures which appear to be significantly different from those introduced by standard lenses (i.e. compact clumps of matter). In 2003, the discovery of the peculiar object CSL-1 raised the interest of the physics community since its morphology and spectral features strongly argued in favour of it being the first case of gravitational lensing by a cosmic string. In this paper we provide a detailed description of the expected observational effects of a cosmic string and show, by means of simulations, the lensing signatures produced on background galaxies. While high angular resolution images obtained with Hubble Space Telescope, revealed that CSL-1 is a pair of interacting ellipticals at redshift 0.46, it represents a useful lesson to plan future surveys. [source]