this paper investigates the nature of volatility characteristics of stock returns in the bangladesh stock markets employing daily all share price index return data of dhaka stock exchange (dse) and chittagong stock exchange (cse) from 02 january 1993 to 27 january 2013 and 01 january 2004 to 20 august 2015 respectively.  furthermore, the study explores the adequate volatility model for the stoc...

This paper describes a synthesis algorithm tailored to the construction of choice-free Petri nets from finite persistent transition systems. With this goal in mind, a minimised set of simplified systems of linear inequalities is distilled from a general region-theoretic approach, leading to algorithmic improvements as well as to a partial characterisation of the class of persistent transition s...

BACKGROUND AND OBJECTIVE Outcomes for children with special health care needs (SHCN) can vary by their patterns and persistence over time. We aimed to empirically establish typical SHCN trajectories throughout childhood and their predictive relationships with child and parent outcomes. METHODS The 2 cohorts of the nationally representative Longitudinal Study of Australian Children were recrui...

Three chitinases, designated gazyumaru latex chitinase (GLx Chi)-A, -B, and -C, were purified from the latex of gazyumaru (Ficus microcarpa). GLx Chi-A,-B, and -C are an acidic class III (33 kDa, pI 4.0), a basic class I (32 kDa, pI 9.3), and a basic class II chitinase (27 kDa, pI > 10) respectively. GLx Chi-A did not exhibit any antifungal activity. At low ionic strength, GLx Chi-C exhibited s...

OBJECTIVE To assess whether maternal use of selective serotonin reuptake inhibitors (SSRIs) increases the risk of persistent pulmonary hypertension in the newborn, and whether such an effect might differ between specific SSRIs. DESIGN Population based cohort study using data from the national health registers. SETTING Denmark, Finland, Iceland, Norway, and Sweden, 1996-2007. PARTICIPANTS ...

Sleep disturbance is a very common finding in patients with persistent cough1. This is especially apparent in infants with common cold or influenza and the continuous crying can lead to considerable distress for the parents. Cough syrups which are easily available as over the counter medications can induce sleep, and many parents turn to this medication when their infant is suffering from persi...

Persistent current in one-dimensional non-superconducting mesoscopic rings threaded by a slowly varying magnetic flux φ is studied based on the tight-binding model. The behavior of the persistent current is discussed in three aspects: (a) single hopping impurity, (b) in-plane electric field and (c) in presence of some foreign atoms. PACS No.: 73.23.-b; 73.23.Ra; 73.63.Nm