The behaviour of the mean Euler–Poincaré characteristic and mean Betti’s numbers in the Ising model with arbitrary spin on Z2 as functions of the temperature is investigated through intensive Monte Carlo simulations. We also consider these quantities for each color a in the state space SQ = {−Q,−Q + 2, . . . , Q} of the model. We find that these topological invariants show a sharp transition at...

The behaviour of the mean Euler–Poincaré characteristic and mean Betti’s numbers in the Griffiths’ model on Z2 (the Q-states Ising model) as functions of the temperature is investigated through intensive Monte Carlo simulations. We also consider these quantities for each color a in the state space SQ = {−Q,−Q+2, . . . , Q} of the model. We find that these topological invariants show a sharp tra...

in this paper, absorbing markov chain models are developed to determine the optimum process mean levels for both a single-stage and a serial two-stage production system in which items are inspected for conformity with their specification limits. when the value of the quality characteristic of an item falls below a lower limit, the item is scrapped. if it falls above an upper limit, the item is ...

Introduction In January 2005, the Jordan Valley Water Conservancy District (JVWCD), a public agency that supplies water to much of Salt Lake County, Utah, drilled an exploratory test well. The well proved to be reasonably productive, and chemical analyses of the water showed that it met all primary water-quality maximum contaminant levels (MCLs) and most secondary standards for drinking water a...

BACKGROUND Aging perceptions have been found to be major contributors to health in old age. To quantitatively explore aging perceptions among elderly Turkish migrants, valid and reliable Turkish-language instruments are needed. The objective of the current study was to examine the construct validity and reliability of the Turkish-language version of the seven-dimension Aging Perceptions Questio...

BACKGROUND The Norwegian version of the Kidscreen-27, a measure of generic health-related quality of life, has not yet been validated. Thus, the aim of this study was to investigate the reliability and validity of the Norwegian Kidscreen-27, in 10 year-old children. METHODS The Kidscreen-27 consists of five domains and was validated in a cross-sectional study of 1085 school children (52.5 % b...

BACKGROUND Both prognoses and real demographic trends in developed countries point to the increasing proportion in the population of people above 65 years of age. One of important themes of care for seniors is the assessment of their quality of life. To evaluate the quality of life of seniors three types of tools can be used: general generic tools; generic tools used for the age group of elderl...

OBJECTIVE The aim of this study was to translate and validate the psychometric properties of the Quality of Life Kindl questionnaire. MATERIALS & METHODS Parents of 4-7 yr-old healthy and ill children referred to Mofid Children Hospital in Tehran in 2013, Iran were sampled randomly in two groups each of which 130 people. After translation, the questionnaie's validity and reliability was evalu...