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Resource-Efficient Scheduling Of Multiprocessor Mixed-Criticality Real-Time Systems, Jaewoo Lee

Publicly Accessible Penn Dissertations

Timing guarantee is critical to ensure the correctness of embedded software systems that

interact with the physical environment. As modern embedded real-time systems evolves,

they face three challenges: resource constraints, mixed-criticality, and multiprocessors. This

dissertation focuses on resource-efficient scheduling techniques for mixed-criticality systems

on multiprocessor platforms.

While Mixed-Criticality (MC) scheduling has been extensively studied on uniprocessor plat-

forms, the problem on multiprocessor platforms has been largely open. Multiprocessor al-

gorithms are broadly classified into two categories: global and partitioned. Global schedul-

ing approaches use a global run-queue and migrate tasks among processors for improved

schedulability. Partitioned scheduling approaches use per …

Improving Search Ranking Using A Composite Scoring Approach, Larry D. Snedden

UNF Graduate Theses and Dissertations

In this thesis, the improvement to relevance in computerized search results is studied. Information search tools return ranked lists of documents ordered by the relevance of the documents to the user supplied search. Using a small number of words and phrases to represent complex ideas and concepts causes user search queries to be information sparse. This sparsity challenges search tools to locate relevant documents for users. A review of the challenges to information searches helps to identify the problems and offer suggestions in improving current information search tools. Using the suggestions put forth by the Strategic Workshop on Information Retrieval …