In this paper, we study a single server Markovian queue with state dependent accessible services, reneging and feedback of customers. The server can accommodate at the most $d$ customers in the service station, after which the new arrivals have to wait in the primary queue of infinite waiting space. All arrivals demand First Essential Service (FES), after completing FES, customers decide to joi...

now closed to this country, and this, together with the necessity of conserving foreign exchange and avoiding the waste of shipping space by the importation of non-essential drugs and chemicals, renders the problem of finding adequate alternatives pressing \?Extract from preface to the Extra Pharmacopoeia, volume 1, 1941. Drug economy is surely as necessary to the war effort in India as it is i...

OBJECTIVE To elicit the opinions of family physician anesthetists (FPAs) and hospital Chief Executive Officers (CEOs) regarding the structure of their organizations and the importance of family medicine anesthesia. DESIGN Mailed survey. SETTING Ontario hospitals. PARTICIPANTS The CEOs of Ontario hospitals and family physicians who provide anesthetic services in Ontario hospitals. MAIN O...

This article presents a perishable (s; S) inventory system under continuous review at a service facility in which a waiting hall for customers is of nite size M. The arrival instants of customers to the service station constitutes a Poisson process. The life time of each items is assumed to be exponential. All arriving customers demand the rst "essential" service, whereas only some of them dema...

The antimicrobial activity of essential oils and their components has been recognized for a very long time. Essential oils (EOs) are made from a very complex mixture of volatile molecules that are produced by the secondary metabolism of aromatic and medicinal plants and can be obtained by distillation of different parts of plants. The large number of studies on the antimicrobial activity of EOs...

Like most developed countries with an ageing population, the incidence of patients vascular disease in Hong Kong is predicted to increase rapidly next few decades. Coronary, cerebrovascular and peripheral arterial diseases are usual end result systemic atherosclerosis, caused by longer life expectancy, high-lipid diet increasing prevalence diabetes mellitus. The aetiology management many (eg, c...

nowadays service industry plays an essential and significant role in economic growth and development of nations, while the role and importance of insurance industry as a supporting base of other industries is apparent. on the other hand, the world of insurance is rapidly changing and getting competitive and correct understanding of customers' requirements and their satisfaction are essentials f...