Quality and intelligibility of narrowband telephone speech can be improved by artificial bandwidth expansion (ABE), which expands the speech bandwidth using only information available in the narrowband speech signal. This paper describes an ABE method that generates a high-band expansion using spectral folding and then modifies the magnitude spectrum of the expansion band with spline curves. Th...

A revocable-storage attribute-based encryption (RS-ABE) scheme is an encryption scheme which extends attribute-based encryption by introducing user revocation. A key-policy RS-ABE scheme links each key to an access structure. We propose a new key-policy RS-ABE scheme whose security we prove in term of indistinguishability under a chosen-plaintext attack (IND-CPA).

Cipher-policy attribute-based encryption (CP-ABE) is a more efficient and flexible encryption system as the encryptor can control the access structure when encrypting a message. In this paper, we propose a privacy-preserving decentralized CP-ABE (PPDCP-ABE) scheme where the central authority is not required, namely each authority can work independently without the cooperation to initialize the ...

Fermentation of sulfuric acid treated corn fiber hydrolysate (SACFH) inhibited cell growth and butanol production (1.7+/-0.2g/L acetone butanol ethanol or ABE) by Clostridium beijerinckii BA101. Treatment of SACFH with XAD-4 resin removed some of the inhibitors resulting in the production of 9.3+/-0.5 g/L ABE and a yield of 0.39+/-0.015. Fermentation of enzyme treated corn fiber hydrolysate (ET...

Osteoclasts play a critical role in bone resorbing disorders such as osteoporosis, periodontitis, and rheumatoid arthritis. Therefore, discovery of agents capable of suppressing osteoclast differentiation may aid the development of a therapeutic access for the treatment of pathological bone loss. Ampelopsis brevipedunculata has been used as herbal folk medicine to treat liver diseases and infla...

Ciphertext policy attribute based encryption (CP-ABE) is a technique in which a user with a secret key (containing attributes) is able to decrypt a message only if the attributes in the policy match those defined in the secret key. The existing methods that use reasonably computable decryption policies for CP-ABE, produce the ciphertext of size at least linearly varying with the number of attri...

In military environments, like battlefield or a hostile region, the mobile nodes might suffer from intermittent network connectivity and frequent partitions. Disruption-tolerant network (DTN) technology is the successful solution that allow, wireless devices carried by soldiers to communicate with each other and access the confidential information or command reliably by exploiting external stor...

In Ciphertext-Policy Attribute-Based Encryption (CP-ABE), a user secret key is associated with a set of attributes, and the ciphertext is associated with an access policy over attributes. The user can decrypt the ciphertext if and only if the attribute set of his secret key satisfies the access policy specified in the ciphertext. Several CP-ABE schemes have been proposed, however, some practica...

BACKGROUND Acute brain embolization (ABE) in left-sided infective endocarditis has significant implications for clinical decision making. The true incidence of ABE, including subclinical brain embolization, is unknown. METHODS AND RESULTS We prospectively studied 56 patients with definite left-sided infective endocarditis. Patients were examined by a study neurologist, and those without contr...

The present study was designed to investigate the hypoglycemic and hypolipidemic activities of an ethanolic extract of Averrhoa bilimbi Linn. leaves (Oxalidaceae, Common name: Bilimbi) in streptozotocin (STZ)-diabetic rats. The optimal hypoglycemic dose (125 mg kg(-1)) was determined by performing the oral glucose tolerance test (OGTT) in both normal and STZ-diabetic rats. To investigate the ef...