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The cache memory has a direct effect on the performance of a computer system. Instructions and data are fetched from a fast cache instead of a slow memory to save hundreds of cycles. Reducing the cache miss ratio will definitely improve the execution time of an application. In this work, we propose cache memory designs that reduce the number of conflict misses significantly. The proposed designs reduce the conflict misses in the last level multi-way set associative cache. Each set is divided into a group of subsets: the first is referred to as the exclusive subset, and the rest are the shared subsets. The exclusive is configured as a traditional cache where each block is mapped to the set whose index matches the block index. In addition to their standard cache indexing role, the shared subsets are configured to host blocks with different indices. A memory block can be mapped to one subset from the exclusive type or one of multiple subsets from the shared type. Since the proposed technique is based on combining multiple sets of the shared part to form a larger set, that is shared between memory blocks with different indices, we have chosen the name “set folding.” The decision as to where to map a memory block depends on the number of misses encountered at each of the potential target sets. To evaluate the proposed design based on the overall hit rate, twenty-three benchmarks from SPEC CPU 2006 were simulated using the SuperESCalar simulator. The proposed designs require a few extra storage bits which adds a small overhead on the hardware complexity in comparison with the conventional cache. However, the proposed designs achieve lower miss rates for most of the benchmarks. [ABSTRACT FROM AUTHOR]

Background Understanding parental knowledge and attitudes is crucial for effective public health interventions. This study aimed to explore knowledge and attitudes reagrding the COVID-19 crisis among parents who visited King Abdullah University Hospital (KAUH) in Irbid governorate, Jordan, during the second wave of the pandemic. Methods This study employed a cross-sectional design for the parents who frequently visit KAUH in the period December 2020-January 2021. A quantitative study design was used via an online survey questionnaire via WhatsApp. The data from the responses were analyzed to understand the participants' knowledge and attitudes toward COVID-19. Results A total of 600 parents sample participated in this study. The findings showed that around 57% of the parents had high awareness and knowledge of the different symptoms of COVID-19. Additionally, around 60% of the parents who visited the KAUH during the second wave of this crisis in December 2020 and aged from 40 to 50 years old had more awareness of the different symptoms of this virus. Knowledge and attitudes towards SARS-CoV-2 were assessed, showing that high-education respondents (n = 425) identified sneezing (80%) and touching surfaces (90%) as common transmission routes, while low-education respondents (n = 153) emphasized sneezing (100%). Preventive actions such as wearing masks (high education: 80%, low education: 100%) and avoiding crowds (high education: 80%, low education: 83.3%) were widely recognized. Both groups believed in the benefits of vitamin C-rich foods (high education: 50%, low education: 25%), but not in alcohol, for treatment. They also rejected the idea that the virus could be transmitted from mothers to fetuses or through breastfeeding. Both education levels agreed that elderly individuals are at higher risk of severe complications, with high-education respondents (90%) and low-education respondents (100%) citing severe lung infection as a major risk. Conclusions Generally, the sample of different age groups was more concerned with the risks and threats that could happen because of this pandemic. New studies investigating similar issues in this crisis are necessary to expand the perceptions of managing and controlling this situation., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Jordan University of Science and Technology issued approval 2022.1.12. The Institutional Review Board (IRB) at Jordan University of Science and Technology approved the study. The study was performed in accordance with the principles of the Declaration of Helsinki (1975). Informed consent was waived by the IRB committee due to the retrospective nature of the study, as the research could not be carried out practically without the waiver. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Negresh et al.)