The structural characteristics of biological specimens, such as wet proteins and fixed living cells, can be conveniently probed in their host aqueous media using soft X-rays the water window region (200–600 eV). Conventional X-ray detectors this area exhibit low spatial resolution, have limited sensitivity, require complex fabrication procedures. Here, many these limitations are overcome by int...

OBJECTIVE The risk of invasive colorectal cancer in colorectal polyps correlates with lesion size. Our purpose was to define the most accurate methods for measuring polyp size at CT colonography (CTC) using three models of workstations and multiple observers. MATERIALS AND METHODS Six reviewers measured 24 unique polyps of known size (5, 7, 10, and 12 mm), shape (sessile, flat, and pedunculat...

We overview a new non-parametric method for estimating the time-varying spectrum of a non-stationary random process. Our method extends Thomson’s powerful multiple window spectrum estimation scheme to the time-frequency and time-scale planes. Unlike previous extensions of Thomson’s method, we identify and utilize optimally concentrated Hermite window and Morse wavelet functions and develop a st...

近年,脳梗塞の治療では心筋梗塞の治療と同様に早 期診断・早期治療の重要性が叫ばれ,心筋梗塞が “Heart Attack”と呼ばれ可急的速やかに治療され一命 をとりとめるように,脳梗塞も“Brain Attack”と捉え 同様に速やかに治療を行い,後遺症を最小限にくいと めることの重要性が認識されつつある.脳虚血が発症 して脳血流が遮断されると脳組織は数時間で不可逆性 の変化をきたし壊死に陥って梗塞となる.ひとたび脳 梗塞に罹患すると片麻痺や言語障害などの神経症候, 記憶・記銘力の低下や情緒障害などの精神症状,さら にQOLの低下や痴呆症などの後遺症に苦しむことに なり社会的生命を失うことにもなる. 近年CT(computed tomography),MRI・A(magnetic resonance imaging・angiography),SPECT(single photon e...

In many distribution networks, it is vital that time windows in which deliveries are made are assigned to customers for the long term. However, at the moment of assigning time windows demand is not known. In this paper we introduce the time window assignment vehicle routing problem, the TWAVRP. In this problem time windows have to be assigned before demand is known. Next the realization of dema...

We propose an extension of Thomson's multiple window spectrum estimation for stationary random processes to the time-varying spectrum estimation of non-stationary random processes. Unlike previous extensions of Thomson's method, in this paper we identify and utilize optimally concentrated window and wavelet functions for the time-frequency and timescale planes respectively. Moreover, we develop...

Signal denoising can not only enhance the signal to noise ratio (SNR) but also reduce the effect of noise. In order to satisfy the requirements of real-time signal denoising, an improved semisoft shrinkage real-time denoising method based on lifting wavelet transform was proposed. The moving data window technology realizes the real-time wavelet denoising, which employs wavelet transform based o...

The vehicle routing problem with time windows is a widely studied problem with many realworld applications. The problem considered here entails the construction of routes that a number of identical vehicles travel to service different nodes within a certain time window. New benchmark problems with multi-objective features were recently suggested in the literature and the multi-objective optimis...

Ligaments, tendons and other soft tissues are nonlinearly viscoelastic. To discriminate among various constitutive equations which may be used to describe the tissue, appropriate experimental modalities are requisite. Ideally, testing should span physiologic ranges for load (or strain), load history (recovery and reloading), and load onset and duration, and a robust model will fit all data. Met...