The Paleoproterozoic Changzhougou Formation (Changcheng Group) of North China contains compression-like structures, illimeters to centimeters in diameter and about a millimeter thick that are circular, elliptical, elongate, and irregular in shape. hese structures were interpreted to be carbonaceous compressions of megascopic eukaryotes by Zhu et al. (2000). Some of the ompression-like structure...

Non-destructive damage identification is one of the most important problems in maintenance and reliability of composite structures. The methods applied for damage identification should be sensitive for external and internal damages and provide their precise localization. One of the promising methods for the damage identification is the wavelet transform applied to modal shapes of investigated o...

We investigate the narrowing relation in a wide class of (cyclic) term-graph rewrite systems. We propose a new sound and complete narrowing-based algorithm able to solve goals in presence of data structures with pointers (e.g., circular lists, doubly linked lists etc.). We first define the class of rewrite systems we consider. Our rules provide features such as pointer (edge) redirections, rela...

Simplification of given polygons has attracted many researchers. Especially, finding circular and elliptical structures in images is relevant in many applications. Given pixel chains from edge detection, this paper proposes a method to segment them into straight line and ellipse segments. We propose an adaption of Douglas-Peucker’s polygon simplification algorithm using circle segments instead ...

Artificial light-harvesting systems have until now not been able to self-assemble into structures with a large photon capture cross-section that upon a stimulus reversibly can switch into an inactive state. Here we describe a simple and robust FLFL-dipeptide construct to which a meso-tetraphenylporphyrin has been appended and which self-assembles to fibrils, platelets or nanospheres depending o...

Turnarounds have been a subject of fascination for business executives and a frequent source of enthusiasm for investors (Furman & McGahan, 2002). The phenomenon is of wide interest as many organizations go through major performance declines at some point during their evolution and have to deal with the issue of how to get back to leadership positions (Barker & Barr, 2002). I use the word ‘turn...

The connection between human resources and performance in firms in the private sector is well documented. What is less clear is whether the move towards managerialism that has taken place within the Australian public sector during the last twenty years has brought with it some of the features of the relationships between Human Resource Management (HRM) and performance experienced within the pri...