OBJECTIVE To compare the value of the tumor marker S-100B protein and fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) in patients treated for melanoma metastases. METHODS In 41 patients with proven melanoma metastases, S-100B measurements and FDG-PET/CT were performed before and after therapy. The change of S-100B levels (DeltaS-100B) was assessed. In all pati...

Many organizations struggle to make informed decisions when investing in new software technologies. This paper examines the problems of evaluating the likely impact of a new software technology within an organization, and describes an important component of such an evaluation based on understanding the " deltas " provided by the new technology. The main contribution of this paper is a framework...

An increasing number of scientific communities rely on Semantic Web ontologies to share and interpret data within and across research domains. These common knowledge representation resources are usually developed and maintained manually and essentially co-evolve along with experimental evidence produced by scientists worldwide. Detecting automatically the differences between (two) versions of t...

In this paper we investigate alternative Lévy base correlation models that arise from the Gamma, Inverse Gaussian and CMY distribution classes. We compare these models to the basic (exponential) Lévy base correlation model and the classical Gaussian base correlation model. For all the investigated models, the Lévy base correlation curve is significantly flatter than the corresponding Gaussian o...

A surrogate data analysis is presented, which is based on the fluctuations of the "entropy" S defined in the natural time domain [Phys. Rev. E 68, 031106 (2003)]]. This entropy is not a static one such as, for example, the Shannon entropy. The analysis is applied to three types of time series, i.e., seismic electric signals, "artificial" noises, and electrocardiograms, and it "recognizes" the n...

The temperature-dependences of the second-order rate constants (k) of the reactions of the catalytic site thiol groups of two cysteine peptidases papain (EC 3.4.22.2) and actinidin (EC 3.4.22.14) with a series of seven 2-pyridyl disulphide reactivity probes (R-S-S-2-Py, in which R provides variation in recognition features) were determined at pH 6.7 at temperatures in the range 4-30 degrees C b...

This paper presents an approach for assessing data dependencies among concurrently executing processes in a service composition environment. The data dependencies are analyzed from data changes that are extracted from database transaction log files and generated as a stream of deltas from Delta-Enabled Grid Services. The deltas are merged by timestamp to create a global schedule of data changes...

The erosive action of rivers and seas has immense influence on the appearance of the physical landscape. However, the creation of several important river and coastal features are not available in terrain creation software and systems. We have designed algorithms to easily create these features, namely (1) river meanders, (2) river deltas, (3) coastal cliffs, and (4) beaches. A terrain that does...

No genetic model can explain the variability in distributary network pattern on modern deltas. Here we derive scaling relationships for two processes known to create distributary channels and, with these laws, construct a simple model for distributary network evolution. The first process is mouth-bar deposition at the shoreline and subsequent channel bifurcation; the second is avulsion—the whol...

About This Issue ................................ 1 Analyzing Character Patterns .......... 1 Versum Deltas .................................... 7 Graphics Corner ............................... 10 Tricky Business ................................ 14 From the Library .............................. 19 What’s Coming Up ..........................20 In-Depth Coverage of the Icon Programming Language...