We prove sharp L estimates for oscillatory integral and Fourier integral operators for which the associated canonical relation C ⊂ T ∗ΩL × T ∗ΩR projects to T ∗ΩL and to T ∗ΩR with corank one singularities of type ≤ 2. This includes two-sided cusp singularities. Applications are given to operators with one-sided swallowtail singularities such as restricted X-ray transforms for well-curved line ...

We show that in the worst case, (n d) sidedness queries are required to determine whether a set of n points in IR d is aanely degenerate, i.e., whether it contains d + 1 points on a common hyperplane. This matches known upper bounds. We give a straightforward adversary argument, based on the explicit construction of a point set containing (n d) \collapsible" simplices, any one of which can be m...

objectives: the main objective of this study was to investigate the association of psychological factors and life stressors with quality of life in caregivers of children with pku. methods: participants were caregivers of children with pku who were referred to a child and adolescent consultation-liaison psychiatry clinic for a clinical follow up. their demographic characteristics were recorded ...

Background and aims: Nurses are particularly susceptible to burnout. Nursing staffs are in face to a relatively stressful work environment, high mental and physical pressure, irregular scheduling or shifting, limited job promotion, and socio-emotional pressures in connection with the patients and partners. This study aimed to assess the quality of work life (QWL) and its association with "job b...

to study the effect of three soil fertilizing systems (chemical, organic, and integrated) on forage yield and quality of globe artichoke (cynara scolymus) an experiment was conducted using a randomized complete block design (rcbd) of four replications at the research farm of college of agriculture, university of tehran, karaj, iran in 2006. the treatments included 5 levels of chemical fertilize...

The low-cost sensors and IoT have come to the rescue due high cost operational complexity of equipment methodologies in environmental monitoring. They are relatively inexpensive reliable. It is on this assumption that we decided use World Air Quality satellite data supplied by air matters.com. This study a 40-day preliminary work which quality [Air Index (AQI), PM2.5, PM10, NO2, CO, SO2, O3] me...

Row-Diagonal Parity (RDP) is a new algorithm for protecting against double disk failures. It stores all data unencoded, and uses only exclusive-or operations to compute parity. RDP is provably optimal in computational complexity, both during construction and reconstruction. Like other algorithms, it is optimal in the amount of redundant information stored and accessed. RDP works within a single...