Die asymptotische Entwicklung der Funktion Z(t) = eζ(1/2 + it) für reelle t → +∞ (dabei ist θ(t) = = log Γ(1/4 + it/2)− (t log π)/2 und ζ(1/2 + it) die Riemannsche Zetafunktion auf der kritischen Geraden <(s) = 1/2) – heute allgemein als Riemann-SiegelFormel bezeichnet – wird auf neue Weise mit Hilfe der Sattelpunktmethode aus der sogenannten Riemann-Siegel-Integralformel hergeleitet. Die Forme...

Node-links diagrams are a very common way to visualize datasets of different graphs like friendships in social communities, flight maps or communication networks. In these datasets nodes are often connected by a huge number of edegs, which leads to edge crossings and edge congested areas, occluding nodes and further information underlying the diagram. To allow exploring the graph despite those ...

Physical Unclonable Function (PUF) is hardware analog of a one-way function which can address hardware security issues such as device authentication, generating secret keys, producing seeds for Random Number Generators, etc. Traditional silicon PUFs are based on delay (Ring Oscillator PUFs and Arbiter PUFs) or memory structures (like SRAM). In this paper, we propose a novel idea of a very fast,...

BACKGROUND Colorectal cancer (CRC) is the second commonest cancer in women, the third in men, being the fourth commonest cause of cancer death. The most important factor for prognosis and staging in CRC patients is the status of the regional lymph nodes (LN). AIM To implement the method for sentinel lymph node (SLN) detection in CRC patients using radiocolloid, and test its detection rate, se...

This thesis deals with the rectilinear crossing minimization problem, which is NP-hard [BD93]. More precisely, we propose a heuristic for computing a straight-line drawing of a general graph G which realizes a small rectilinear crossing number. Inspired by Gutwenger et al. [GMW05], we pursue an approach which extracts a planar subgraph that includes as many edges of G as possible and iterativel...

The XQuery Update Facility has turned native XML databases from static document-oriented database systems to general purpose transactional systems. Consequently, data structures allowing both fast read and write operations have become a necessity. This thesis presents several such structures and focuses on the challenges that emerge by their application in a native XML database. A new algorithm...

The growth of battery-powered mobile and wearable devices has increased the importance of low-power operation and cost in system-on-a-chip (SoC) design. Supply-voltage scaling is the predominant approach to active power reduction for SoC design, including voltage scaling for on-die memory given increasing levels of memory integration. SRAM can limit the minimum operating voltage (VMIN) of a des...

INTRODUCTION Breast cancer accouns for 22.9% of all cancers in women and 13.7% of cancer deaths. Positive axillary lymphnodes (ALN) predict the development of distant metastases. The status of the sentinel lymphnode (SLN) is crutial for the treatment selection. AIM To determine the benefits of SLN detection in patients with breast cancer. MATERIAL AND METHODOLOGY 38 female patients (pts), a...

In central neurons the first node of Ranvier is located at the first axonal branchpoint, ∼ 100 μm from the axon initial segment where synaptic inputs are integrated and converted into action potentials (APs). Whether the first node contributes to this signal transformation is not well understood. Here it was found that in neocortical layer 5 axons, the first branchpoint is required for intrinsi...