We formalize the standard appli ation of identity-based en ryption (IBE), namely nonintera tive se ure ommuni ation, as realizing an ideal system whi h we all delivery ontrolled hannel (DCC). This system allows users to be registered (by a entral authority) for an identity and to send messages se urely to other users only known by their identity. Quite surprisingly, we show that existing se uri...

Homomorphic encryption schemes are an essential ingredient to design protocols where different users interact in order to obtain some information from the others, at the same time that each user keeps private some of his information. When the algebraic structure underlying these protocols is complicated, then standard homomorphic encryption schemes are not enough, because they do not allow to c...

Performance testing of the model-scale CPA was recently completed at the University of Texas Center for Electromechanics. A major part of the project was the development of design and simulation codes that would accurately represent the performance of pulsed alternators. This paper discusses the components of the system and its operational sequence. Details of the performance simulation model a...

OBJECTIVE Polycystic ovary syndrome (PCOS) is a frequent reproductive and metabolic disorder associated with insulin resistance (IR). Berberine (BBR) is an isoquinoline derivative alkaloid extracted from Chinese medicinal herbs that has been used as an insulin sensitizer. BBR may have a potential therapeutic value for PCOS. The aim of this study was to evaluate the effects of BBR in comparison ...

OBJECTIVE To investigate the association between use of combined oral contraceptives and risk of venous thromboembolism, taking the type of progestogen into account. DESIGN Two nested case-control studies. SETTING General practices in the United Kingdom contributing to the Clinical Practice Research Datalink (CPRD; 618 practices) and QResearch primary care database (722 practices). PARTIC...

Apoptosis and its augmentation by androgen withdrawal is an important event in the testis. In other tissues apoptosis is regulated by genes belonging to the bcl-2 family. However, little is known about these pathways in the human testes. Human testes were obtained from patients with prostate cancer, undergoing orchidectomy for permanent androgen ablative treatment. The patients were either untr...