As we approach 100nm technology the interconnect issues are becoming one of the main concerns in the testing of gigahertz system-onchips. Voltage distortion (noise) and delay violations (skew) contribute to the signal integrity loss and ultimately functional error, performance degradation and reliability problems. In this paper, we first define a model for integrity faults on the high-speed int...

High Speed Serializer Deserializers (serdes) are traditionally tested using functional BIST. This paper presents an improved BIST for testing the digital part of a serdes using circular BIST.

A BIST method enabling two-pattern testing at-speed without violating thermal constraints by introducing cool down periods is proposed. The application of the method is demonstrated based on a scalable BIST architecture. Applicability on IP cores is given since only a two-pattern test set is required as input.

Cities are experiencing rapid population growth and consequently extensive urbanization. Land-use/land-cover change is one of the important elements worldwide, which significantly affect the environment. This study aims to describe the emergence of urban heat and cool islands as a result of changes in land-use/land-cover. Land surface temperature over a 32-year period in Isfahan city, Iran was ...

A series of studies in urban growth involve the segmentation of urban built up area. This segmentation may used as input to geospatial models to quantify and map urban growth. The segmentation may be used as well to study the dynamics of urban growth on a certain time span. We present in this work a method to segment urban built up area from Landsat multi-spectral images. Our method uses the ex...

Urban built-up area information is required by various applications. However, urban built-up area extraction using moderate resolution satellite data, such as Landsat series data, is still a challenging task due to significant intra-urban heterogeneity and spectral confusion with other land cover types. In this paper, a new method that combines spectral information and multivariate texture is p...

Taking Harare metropolitan province in Zimbabwe as an example, we classified Landsat imagery (1984, 2002, 2008 and 2013) by using support vector machines (SVMs) and analyzed built-up and non-built-up changes. The overall classification accuracy for the four dates ranged from 89% to 95%, while the overall kappa varied from 86% to 93%. The results demonstrate that SVMs provide a cost-effective te...

Urban sprawl, or the unplanned and uncontrolled spreading out of built-up areas in Zaria urban area causes problems of congestion, poor urban basic infrastructure delivery and poor urban planning. This paper analyzed the pattern and implications of urban sprawl using GIS and Remote sensing as an improved approach to analyze and explain sprawling beyond the traditional spatial or cartographic ma...