We present a mixed-integer program to schedule longand short-term production at LKAB’s Kiruna mine, an underground sublevel caving mine located in northern Sweden. The model minimizes deviations from monthly preplanned production quantities while adhering to operational constraints. Because of the mathematical structure of the model and its moderately large size, instances spanning a time horiz...

Abstract Ore flow has been identified as one of the critical points developing novel mining method Raise Caving (RC). The focus this contribution is on key issues ore-flow and how to encounter them enable a safe, efficient, economic operation. In de-stressing phase RC, narrow, tabular slots are developed via raises, only blast swell drawn, hence they stay filled with blasted material at all tim...

Our main aim in this study was to explore the association between selective mutism (SM) and aspects of nonverbal cognition such as visual memory span and visual memory. Auditory-verbal memory span was also examined. The etiology of SM is unclear, and it probably represents a heterogeneous condition. SM is associated with language impairment, but nonspecific neurodevelopmental factors, including...

Sinkhole development occurs in many areas of the world where soluble rocks crop out. Sinkholes are generally the surface expression of the presence of caves and other groundwater flow conduits in carbonate rocks, which are solutionally enlarged secondary permeability features. Their formation may be either natural or caused by man’s activities. In both cases, heavy consequences have to be regis...

OBJECTIVE We investigated neuropsychological markers that can be used to discriminate pathological cognitive aging from normal cognitive aging. METHODS We administered frontal lobe function tests including the Wisconsin Card Sorting Test (WCST), digit span test, lexical fluency test, fixed condition design fluency test, and Trail Making Test B (TMT-B) to 92 individuals with pathological cogni...

Introduction Reinvigorating processes play an essential part in all animal life. The frequently repeated periods of sleep allow for the restoration of cellular activities. The division of stem cells and the subsequent subdivision of a succession of operational daughter cells, with a relatively short life span, maintain tissues subject to wear and tear such as the blood and the skin. The main re...

<span lang="IN">The condition of research productivity in higher education institutions Indonesia is still not ideal. Departing from this problem, </span><span lang="EN-GB">paper</span><span lang="IN"> aims lang="EN-GB">to</span><span contribute the form a framework used as main alternative optimizing productivity, including number publications institut...

Introduction Reinvigorating processes play an essential part in all animal life. The frequently repeated periods of sleep allow for the restoration of cellular activities. The division of stem cells and the subsequent subdivision of a succession of operational daughter cells, with a relatively short life span, maintain tissues subject to wear and tear such as the blood and the skin. The main re...