Age-related memory impairment occurs in many mammalian species, including humans. Moreover, women undergoing the menopausal transition often complain of problems with memory. We recently reported that rhesus monkeys display age- and menopause-related recognition memory impairment on a hippocampus-reliant test [delayed nonmatching-to-sample (DNMS)]. In the same monkeys, perforated synapse densit...

We describe a new way to organize a full-search vector quantization codebook so that images encoded with it can be sent progressively and have resilience to channel noise. The codebook organization guarantees that the most significant bits (MSBs) of the codeword index are most important to the overall image quality and are highly correlated. Simulations show that the effective channel error rat...

Unilateral damage to the forelimb region of the sensorimotor cortex (FLsmc) in adult rats has previously been found to result in dendritic growth and synaptogenesis in layer V of the contralateral motor cortex. The neuronal growth appears to be mediated in part by lesion-induced changes in the use of the forelimbs. Whether these neuronal changes involve alterations in the structure and/or confi...

The aim of this study was to evaluate the effects of hydrofluoric acid (HF) concentration and previous heat treatment (PHT) on the surface morphology and micro-shear bond strength (mSBS) of a lithium disilicate glass ceramic (EMX) to resin cement. One hundred four EMX specimens were randomly assigned to two groups (n=52) according to the HF concentration: 5% and 10%. A new random distribution w...

This paper presents a novel Current Steering Digital to Analog Converter architecture to reduce area as well as power dissipation. The current cells of conventional binary weighted architecture require larger size of transistors for MSBs. In this paper, same sized current cell transistors for MSBs as that of LSBs and a current mirror circuit is used between the load and MSBs to provide necessar...

Abstract This paper investigates the robustness of a 6‐storey corner‐supported Modular Steel Building (MSB) under notional ground floor corner column removal (i.e. alternate path method). The assessment following structural effects that were frequently ignored for sake simplicity in existing numerical modelling approaches: (1) semi‐rigidity beam‐to‐column connections, and (2) initial out‐of‐str...

Multi-socket server boards (MSBs) exploit the interconnection of multiple processor chips towards forming powerful cache coherent systems, with interconnect technology comprising a key element in boosting processing performance. Here, we present an overview current electrical interconnects for MSBs, outlining main challenges currently faced. We propose use silicon photonics (SiPho) advancing th...

The architecture for very-high speed DAC with medium oversampling and high resolution is discussed. The scheme uses an hybrid sigma-delta scheme that processes LSBs of the input word and obtain digital to analog conversion with an hybrid current steering DAC with dynamic element matching of MSBs and time interleaved conversion of LSBs. The return-to-zero for all elements ensures the required li...