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This paper presents a study of the probabilistic effects that act in addition to deterministic (mechanistic) effects to reduce the thermal cycling durability of ball grid array (BGA) interconnects as the component I/O count increases. The mechanistic drivers include increasing thermal expansion mismatch with increasing package size and increasing stress levels with decreasing solder joint size. The...
A large number of online databases are hidden behind form-like interfaces which allow users to execute search queries by specifying selection conditions in the interface. Most of these interfaces return restricted answers (e.g., only top-k of the selected tuples), while many of them also accompany each answer with the COUNT of the selected tuples. In this paper, we propose techniques which leverage...
Database developers today use data access APIs such as ADO.NET to execute SQL queries from their application. These applications often have security problems such as SQL injection vulnerabilities and performance problems such as poorly written SQL queries. However today's compilers have little or no understanding of data access APIs or DBMS, and hence the above problems can go undetected until much...
The air cargo transportation system is a large and complex service system, in which demand forecasting is a key element in the master planning process essential for analyzing existing cargo flight schedules and identifying future facility requirements of air cargo companies. We propose a multi producer/consumer solution for predicting cargo demand of a specific airline in a given route and cargo load...
Detection, localization and quantification of voltage and current disturbances are important tasks in monitoring and protection of distribution systems. The concept of discrete wavelet transform for feature extraction of power quality disturbance signals has been incorporated as a powerful tool for detecting and classifying power quality problems. This paper presents the ability of multiresolution...
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