OpenID is a user-centric and decentralized Single Sign-On system. It enables users to sign into Relying Partiesby providing an authentication assertion from an OpenID Provider. It is supported by many leading internet companies and there are over a billion accounts capable of using OpenID. We present a security analysis of OpenID and the corresponding extensions and reveal several vulnerabiliti...

Ontologies serve as a means for communication at a semantic level. However, to be able to effectively communicate it is first necessary to determine agreement about the ontological structures underlying the communication. For this purpose, we consider ontologies as semiotic sign systems that are used to communicate meaning. Then we propose a methodology for measuring the extents to which two on...

Three commerciallyavailablekitsfordetermining serum thyroxine (T4) by column were evaluated. Results with all were less than satisfactory, but a series of changes in the Oxford method resulted in increased reproducibility, substantially improved recovery, and extended linearity of the standard curve. Results compared well with the thyrometabolic status of patients and normal individuals. The 95...

İşaret dilleri, sağırların hem birbirleriyle de diğer kişilerle iletişim kurabildikleri doğal dillerdir. dilleri hakkında toplumda birçok yanlış kanı vardır. Bunlardan en yaygını tüm dünyada tek bir işaret dili kullanıldığı düşüncesidir. Bu durumun temel sebebi, dillerinin yalnızca sağırlar, yakınları ve konuya ilgi duyan küçük kesim tarafından biliniyor olmasıdır. Bunun yanı sıra yeterli düzey...

purpose: to describe a new noninvasive method to assure correct orientation of donor lenticules in descemet stripping automated endothelial keratoplasty (dsaek) surgery. methods: dsaek surgery was performed in three eyes with the diagnosis of pseudophakic bullous keratopathy (pbk). for the laboratory part of the study, two whole globes and two precut corneoscleral buttons were used. the donor l...

A radiological sign can sometimes resemble a particular object or pattern and is often highly suggestive of a group of similar pathologies. Awareness of such similarities can shorten the differential diagnosis list. Many such signs have been described for X-ray and computed tomography (CT) images. In this article, we present the most frequently encountered plain film and CT signs in chest imagi...

Researchers and clinicians have recommended that sign language be taught to typically developing children during their first 2 years of life; however, existing research does not provide adequate information regarding appropriate methods of sign training. We used delayed physical prompting and reinforcement to teach manual signs to 3 children between the ages of 6 and 13 months. Data were collec...