Intraluminal impedance, a nonradiological method for assessing bolus flow within the gut, may be suitable for investigating pharyngeal disorders. This study evaluated an impedance technique for the detection of pharyngeal bolus flow during swallowing. Patterns of pharyngoesophageal pressure and impedance were simultaneously recorded with videofluoroscopy in 10 healthy volunteers during swallowi...

We prove that no algorithm for balanced binary search trees performing insertions and deletions in amortized time O(f(n)) can guarantee a height smaller than dlog(n + 1) + 1=f(n)e for all n. We improve the existing upper bound to dlog(n + 1) + log 2 (f(n))=f(n)e, thus almost matching our lower bound. We also improve the existing upper bound for worst case algorithms, and give a lower bound for ...

We characterize free poset algebras F (P ) over partially ordered sets and show that they can be represented by upper semi-lattice algebras. Hence, the uniqueness, in decomposition into normal form, using symmetric difference, of non-zero elements of F (P ) is established. Moreover, a characterization of upper semilattice algebras that are isomorphic to free poset algebras is given in terms of ...

Abstract. Both the scientific and operational communities are increasingly interested in subseasonal to seasonal variations of weather climate. The semi-annual oscillation (SAO) has been studied extensively at surface as well middle atmosphere (upper stratosphere lower mesosphere). However, SAO upper troposphere (UTLS) less discussed. Here we find evident temperature UTLS (250–175 hPa) from sub...

A detailed comparison of the Penman Upper Model and the KOMET German Upper Model is carried out in order to construct a new Merged Upper Model capable of serving as the ideational basis for automatic text generation in both English and German. Previously proposed criteria for conducting such a merge are expanded on and evaluated. It is established that no (semi-)automatic merging of such knowle...

A Schauder basis (xn) of a Banach space X is said to be lower [upper] semi-homogeneous if every normalized block basic sequence of (xn) dominates [is dominated by] the basis. We show that the unit vector basis of a separable Orlicz sequence space `M , with M(1) = 1 is lower [upper] semihomogeneous if and only if M fulfils some kind of super[sub]-multiplicative inequality on the interval[0, 1]. ...

If f : [0, 1] → R is strictly increasing and continuous define Tfx = f(x) (mod 1). A transformation T̃ : [0, 1] → [0, 1] is called ε-close to Tf , if T̃ x = f̃(x) (mod 1) for a strictly increasing and continuous function f̃ : [0, 1] → R with ‖f̃ − f‖∞ < ε. It is proved that the topological pressure p(Tf , g) is lower semi-continuous, and an upper bound for the jumps up is given. Furthermore the cont...