We present the first decentralized multi-authority attributebased signature (DMA-ABS) scheme, in which no central authority and no trusted setup are required. The proposed DMA-ABS scheme for a large class of (non-monotone) predicates is fully secure (adaptive-predicate unforgeable and perfectly private) under a standard assumption, the decisional linear (DLIN) assumption, in the random oracle m...

A comparative approach was used to evaluate the cryosurvival of turkey and crane sperm frozen in a dimethylacetamide (DMA) cryodiluent supplemented with osmoprotectants and ATP. A range (6-26%) of DMA concentrations was used alone or in combination with ATP (30, 60 or 118mM) or one of the following osmoprotectants: (1) sucrose (turkey, 8.0%; crane, 5.0%); (2) 5.0% sucrose and 5.0% trehalose; or...

Copper-dioxygen adducts are important biological oxidants. To gain a better understanding of the underlying chemistries of such species, we report on a series of Cu2II-O2 complexes, [{CuII(MePY2)R'}2(O2)](B(C6F5)4)2 (1R') (where (MePY2)R' is a 4-pyridyl substituted bis[2-(2-(4-R'-pyridyl)ethyl]methylamine; R' = H, MeO, Me2N; Zhang, C. X.; et al. J. Am. Chem. Soc. 2003, 125, 634-635), which read...

OBJECTIVES This study investigated the stability of compounds of dental sealant materials in a salivary matrix. METHODS Various amounts of bisphenol A (BPA), bisphenol A dimethacrylate (BIS-DMA) or triethylene-glycol dimethacrylate (TEGDMA) were added to whole salivary samples, and stored at -70 degrees C or -20 degrees C for up to 4 months. In other experiments, four separate whole salivary ...

2,6-Dimethylaniline (2,6-xylidine; 2,6-DMA) is a nasal carcinogen in rats. Humans may be exposed to this compound via several routes: 2,6-DMA is found in cigarette smoke; it is a pharmacologically inactive metabolite of some drugs (e.g., the local anesthetic lidocaine) and pesticides (e.g., metalaxyl); and it is an impurity in technical grade metalaxyl. The potential transfer of 2,6-DMA from mo...

Fear-related problems are common among Rough Collies in Sweden. Annually, on average, >200 Rough Collies are subjected to the dog mentality assessment (DMA), a temperament test during which 33 behavioral reactions are rated. Previous research has shown that a dog's DMA result can be condensed into 5 underlying personality traits. The aim of the study was to evaluate if it is possible to use the...

In this paper, we investigate the nature of DMA mechanism wherein there is an explicit product-consume relationship. Base on this observation we propose a DMA Cache technique to improve performance of DMA operations. To evaluate this technique, we adopt a hardware-based memory trace collection tool and an FPGA-based tracedrive emulation system. Experimental results show that DMA Cache can impro...

In this paper a computational model called dynamic medial axis (DMA) is proposed to describe the internal evolution of planar shapes. To define the DMA, a symbolic representation called matching list is proposed to depict the topological structure of the medial axis. As shown in this paper with provable properties, the DMA exhibits an interesting dynamic skeleton structure for planar shapes. Fi...

Copying data from devices into main memory is a computationally-trivial, yet time-intensive, task. In order to free the CPU to perform more interesting work, computers use direct memory access (DMA) engines — a special-purpose piece of hardware — to transfer data into and out of main memory. We show that the ability to chain together such memory transfers, as provided by commodity hardware, is ...

This paper describes implementation of DMA controller of AMBA Bus with two masters using VHDL. DMA controller is a synthesizable soft IP core connected to the AMBA AHB Bus for easy integration into SOC implementation. The Direct Memory Access (DMA) Controller is a hardware feature that enables movement of blocks of data from peripheral to memory, memory to peripheral or memory to memory. This m...