Amorphological scale-space representation is presented based on a morphological strong filter, the levelings. The scale-properties are analysed and illustrated. From one scale to the next, details vanish, but the contours of the remaining objects are preserved sharp and perfectly localised. This paper is followed by a companion paper on pde formulations of levelings.

Using a procedure that eliminated repetition of identical items, thus avoiding order effects, we administered the Wechsler Adult Intelligence Scale (WAIS) and the WAis-Revised to 108 subjects. AH correlations between the two tests were significant and similar to those reported in the WAISR manual. For the group as a whole, verbal, performance, and full scale IQ scores on the WAIS-R were signifi...

This paper describes a method for the detection of tracking of elongated structures that is robust under changes of scale and orientation. This method is based on extending the concept of scale invariant natural interest points to include elongated ridge structures. An operator is proposed that directly detects ridge points and provides an estimation of their elongation and orientation. A track...

background: workplace safety has been a concern of workers and managers for decades. measuring safety climate is crucial in improving safety performance. it is also a method of benchmarking safety perception. objective: to develop and validate a psychometrics scale for measuring nurses' safety climate. methods: literature review, subject matter experts and nurse's judgment were used in items de...

purpose the present study investigated the psychometric properties of a malaysian adapted brunel mood scale. methods the questionnaire was administered to 355 young sport athletes with a mean age of 14.69+1.70 years. confirmatory factor analysis (cfa) and cronbach's alpha were used to determine the factorial validity and the internal consistency of the questionnaire respectively. results cfa re...

background: scaling and corrosion are the two most important indexes in water quality evaluation. pollutants are released in water due to corrosion of pipelines. the aim of this study is to assess the scale formation and corrosion of drinking water supplies in ilam city (iran). methods: this research is a descriptive and cross-sectional study which is based on the 20 drinking water sources in i...

injuries, especially traffic accidents are so important causes of death, disability, hospital expenses, economic damages to the society which world health organization selected them as the main subjects for investigation and research. we have done an epidemiologic study about trauma in guilan, a province in north of iran. this is   a descriptive study carried out on patients with traumatic inju...

objectives: the aim of the current study was to determine the depression status of the elderly and it's related factors. methods & materials: this was a cross sectional study. sample unit was based on the elderly of isfahan city in 2007. 248 elderly aged 60 and older (125 men and 123 women) were selected randomly according to clusters related to the families that are under coverage of isfa...

background: migraine is a prevalent disease which is classified into two groups of migraine with aura and without aura. eighteen percent of women and 6.5 percent of men in united states have migraine headache. migraine headache is prevalent in all age groups but it usually subsides in adults above fifty. migraine has many risk factors such as stress, light, tiredness, special foods and beverage...