The Internet goose has laid countless golden eggs, along with a growing number of rotten ones. But it's the rotten ones that now tempt commercial, governmental, and consumer interests to threaten the Internet's uniquely creative power. The expediently selected, almost accidentally generative properties of the Internet - its technical openness, ease of access and mastery, and adaptability - have...

Recently a series of expressive, secure and efficient Attribute-Based Encryption (ABE) schemes, both in key-policy flavor and ciphertext-policy flavor, have been proposed. However, before being applied into practice, these systems have to attain traceability of malicious users. As the decryption privilege of a decryption key in Key-Policy ABE (resp. Ciphertext-Policy ABE) may be shared by multi...

Muscle and nerve possess two closely related properties that are of interest to the physiologist: a labile electric potential difference across the cell surface and the ability to accumulate selectively potassium from an environment poor in that cation but rich in sodium. It appears that most investigators primarily interested in the electric potential have adhered to the original concept laid ...

In an one year lasting project at the University of Applied Sciences in Bremerhaven a digital learning game for the German Maritime Museum in Bremerhaven was developed. It is targeted to school pupils in the age between 10 and 14 and should explain the importance of the cog for trading activities between Hanse cities in the 14th century. More detailed learning objectives were defined through a ...

R ecently, there has been a growing interest in metasystems (or systems of systems), whose com ­ ponents are enterprise systems. Systems engineers and IT pro­ fessionals often use modeling, performance analysis, require­ ment specifications, engineering, integration, architecting, and in­ teroperability among metasystem components to achieve a common goal. However, when it comes to integrating ...

It is late evening in the bustling global city of Hyderabad, India, in July 2004—a large billboard with a single human figure looms out of the horizon alongside a new highway bridge that adjoins high-rise office buildings, apartments, and shopping complexes. A young Indian woman dressed in low-rise blue jeans and a tight tank top with her thumb inserted suggestively into the waistband of her je...

Simon M. Huttegger Department of Logic and Philosophy of Science University of California, Irvine Irvine, CA, USA [email protected] Abstract Formal spaces have become commonplace conceptual and computational tools in a large array of scientific disciplines, including both the natural and the social sciences. Morphological spaces (morphospaces) are spaces describing and relating organismal phenot...

Tumors of the urinary bladder in cattle are common in certain parts of the world. The disease is sometimes referred to as chronic enzootic hematuria (16, 1 7 ) a n d is descriptive of the usual manifestation of the natural disease. In endemic areas, which are usually restricted to mountainous regions, the incidence in cattle older than 2 years of age varies from farm to farm and has been report...

5-Fluorourac i I was d e v e l o p e d b y H e i d e l b e r g e r , D u s c h i n s k y , a n d associa tes (10, 14). I t was s h o w n by H e i d e l b e r g e r et ol. t h a t 5f luorourac i l (5 -FU) inh ib i t s t he g r o w t h of t r a n s p l a n t e d t u m o r s in r a t s a n d mice (14). I n cl inical t r ials , r egress ion of s o m e h u m a n cancer s a f t e r t r e a t m e n t ...

The idiotype network hypothesis proposed by Jerne (1) has led to considerable interest in whether physiologic immunoregulation is accomplished by the interaction of receptor molecules and anti-receptors directed at unique idiotypic determinants. Another issue of importance, related to mechanistic questions, is whether exogenously administered anti-receptor antibodies might be used to manipulate...