BACKGROUND Polymeric alkylpyridinium salts (poly-APS), are chemical defences produced by marine sponges including Reniera sarai. Poly-APS have previously been shown to effectively deliver macromolecules into cells. The efficiency of this closely follows the ability of poly-APS to form transient pores in membranes, providing strong support for a pore-based delivery mechanism. Recently, water sol...

3-Alkylpyridinium polymers (poly-APS), composed of 29 or 99 N-butyl-3-butyl pyridinium units, were isolated from the marine sponge Reniera sarai. They act as potent cholinesterase inhibitors. The inhibition kinetics pattern reveals several successive phases ending in irreversible inhibition of the enzyme. To provide more information on mechanism of inhibition, interaction of poly-APS and N-buty...

Since their invention in 1966 copper vapour lasers (CVLs) have developed into a mature technology with applications including high-speed imaging, micro-machining, non-linear frequency conversion to the ultraviolet, and pumping of solid-state laser materials. However, the performance characteristics of conventional CVLs are fundamentally limited by kinetic processes at play within the gain mediu...

A shape grammar, which can exemplify and visually explain the style of Taiwanese traditional vernacular dwellings, is presented in the form of rules of composition that are derived from considerations of traditional processes of design and construction, and from cultural influences. Taiwanese traditional architecture Taiwanese architecture is a branch of Chinese architecture with distinct pecul...

A compact model for MTJs incorporating temperature and voltage dependencies is presented. Written in Verilog-A, the model is intended to aid in the development of emerging spintronics circuits (i.e. STT-MRAM). Matching with detailed micromagnetic simulations and measurements from 65nm CoFeB/MgO/CoFeB MTJs is shown. Introduction Recent advances in MgO based magnetic tunnel junctions (MTJs) show ...

FROM1916THROUGH 1929,THEJoumalofAmm’can Folklore VAE)published nine volumes containing various forms of Puerto Rican folklore which had been collected during the years of 1914 to 1915 by J. Alden Mason, an American anthropologist working under the supervision of Franz Boas. Notable Puerto Rican scholars (Manrique Cabrera, 1982; Rivera de Alvarez, 1983) have endorsed Mason’s collection as being ...

My primary research interests are computer vision and machine learning, with an emphasis on video analysis and its applications. I believe a working computer vision system should exploit three most fundamental constraints existing in a video sequence: the geometric constraint among video frames and the threedimensional (3D) scene, the coherency in apparent image motions due to scene regularitie...

The capacity of embedded memory on LSIs has kept increasing. It is important to reduce the leakage power of embedded memory for low-power LSIs. In fact, the ITRS predicts that the leakage power in embedded memory will account for 40% of all power consumption by 2024 [1]. A spin transfer torque magneto-resistance random access memory (STT-MRAM) is promising for use as non-volatile memory to redu...

For many decades charge based storage memory technologies (DRAM, flash memory, and other) have been successfully scaled down to achieve higher speed and increased density of memory chips at lower bit cost. However, memories based on this storage principle are gradually approaching the physical limits of scalability. Although a new cell structure for DRAM has been developed by industry to overco...

Over the past years, new memory technologies such as RRAM, STT-MRAM, and PCM have emerged. These technologies employ devices located within the metal layers of the chip, which are relatively fast, dense, and power efficient and can be considered as 'memristors'. To date, research in these devices has primarily focused on memristors as flash, DRAM, and SRAM replacement. In this presentation, we ...