In this paper, we consider the problem of estimating multiple structural breaks in a long-memory FARIMA time series. The number of break points as well as their locations, the orders and the parameters of each regime are assumed to be unknown. A selection criterion based on the minimum description length (MDL) principle is proposed and a genetic algorithm is implemented for its optimization. Mo...

The problem of sequential detection and diagnosis of structural changes in stochastic multivariate systems on the basis of sequential observations has many applications, including detection of changes in parameters of regression equations, testing adequacy of econometric models, fault detection and isolation in complex dynamical systems. There is an extensive statistical and econometric literat...

Changes to the structure of polystyrene melt films as measured through the spectrum of density fluctuations have been observed as a function of film thickness down to the polymer radius of gyration (Rg). Films thicker than 4Rg show bulklike density fluctuations. Thinner films exhibit a peak in S(q) near q=0 which grows with decreasing thickness. This peak is attributed to a decreased interpenet...

Changes in the physicochemical properties and structure of proteins derived from two malt varieties (Baudin and Guangmai) during wort boiling were investigated by differential scanning calorimetry, SDS-PAGE, two-dimensional electrophoresis, gel filtration chromatography and circular dichroism spectroscopy. The results showed that both protein content and amino acid composition changed only slig...

1. I n t r o d u c t i o n Several focal issues have emerged in machine translation (MT) research as the result of recent intensive studies in the field. Tha t is, • Declarative Frameworks for expressing Bi-lingual Knowledge • Integration of Knowledge-based Processing and Contextual Processing with the Translation Process • Effective Exploitation of Domain /Tex t Type Specificity (or Sublanguag...

Motoneurone disease (MND or amyotrophic lateral sclerosis) is a paralysing disease of unknown cause involving progressive, widespread muscle atrophy due to degeneration of spinal and other motoneurones and an accompanying loss of Betz cells in the motor cortex. A current hypothesis attributes the disease to the loss of a muscle-derived neurotrophic factor acting in concert with the normal age-r...

The ability of immunoglobulin E (IgE) to bind to the cell membrane of basophiles and mast cells is progressively lost when the molecule is heated at 56”. In the present study, we have investigated the structural changes induced by heating under conditions known to destroy this biological function, although direct measurements of cytotropic activity were not made. After 30 min at 56” circular di...

The internal structure of an adaptive system is subject to change. An unforeseen and unwanted component composition can cause serious malfunction in a system, which can be difficult to track. Knowledge of the system’s internal structure at runtime helps to understand the system and, in the end, helps to test a system more thoroughly. In this paper, we present the provisional result of our ongoi...

OBJECTIVE Frontolimbic dysfunction is observed in borderline personality disorder (BPD), with responses to emotional stimuli that are exaggerated in the amygdala and impaired in the anterior cingulate cortex (ACC). This pattern of altered function is consistent with animal models of stress responses and depression, where hypertrophic changes in the amygdala and atrophic changes in the ACC are o...

Measurements of the spatial distribution of bunched crystalline ion beams in the radio frequency quadrupole storage ring PALLAS are presented for different ratios of the longitudinal and the transverse confinement strengths. The length of highly elongated crystalline ion bunches and its dependence on the bunching voltage is compared to predictions for a one-dimensional ion string and three-dime...