Efficient low complexity error correcting code (ECC) is considered as an effective technique for mitigation of multi-bit upset (MBU) in the configuration memory (CM) of static random access memory (SRAM) based Field Programmable Gate Array (FPGA) devices. Traditional multi-bit ECCs have large overhead and complex decoding circuit to correct adjacent multibit error. In this work, we propose a simple multi-bit ECC which uses Secure Hash Algorithm for error detection and parity based two dimensional Erasure Product Code for error correction. Present error mitigation techniques perform error correction in the CM without considering the criticality or the execution period of the tasks allocated in different portion of CM. In most of the cases, error correction is not done in the right instant, which sometimes either suspends normal system operation or wastes hardware resources for less critical tasks. In this paper, we advocate for a dynamic priority-based hardware scheduling algorithm which chooses the tasks for error correction based on their area, execution period and criticality. The proposed method has been validated in terms of overhead due to redundant bits, error correction time and system reliability.
ntroduction: Carcinoma cervix is one of the leading causes of death of the female population in developing countries. By virtue of its accessibility, cancer of the cervix can be readily diagnosed even in its preinvasive stage. If treated in the earlier stages the patient can often be cured of the disease. Carcinoma of the cervix is the fourth most frequent cancer in women worldwide and the leading cause of death from cancer in several developing countries including India. The use of cervical smear (Papanicolaou/Pap) as a screening tool has signicantly reduced the incidence of cervical cancer. Materials and Methods: Out of 100,000 Pap smears, a total number of 75 eligible women with atypical glandular cells (AGCs) referred to gynaecology clinics in Isfahan, Iran, and seventy women were selected to undergo Pap smear test, colposcopic examination and ECC. EMC was performed in women older than 35. Pap smear test results were classied as normal, inammation, AGCs and necrosis. Colposcopy, ECC and EMC ndings were classied as normal, benign and malignant pathologic lesions. Results: Majority of the women were between 31-40 years (59.6%).On PAP smear, ASC-US was found in 5.8% of women, ASC-H in 1.4% of women, LSIL in 6.7% of women and HSIL in 6.2% of women. On colposcopy, LSIL was seen in 26.4% of women and HSIL in 17.8% of women. On histopathological examination, CIN I was seen in 16.8% of women followed by CIN II(8.2%)and CIN III(5.8%).Sensitivity and specicity of PAP smear was 29.7% and 94.4%.Sensitivity and specicity of colposcopy was 85.9% and 74.3%. Conclusion: Pap smear had a poor sensitivity compared to colposcopy but a better specicity than colposcopy .Hence, it may be better to utilise both tests in screening of premalignant lesions of cervix as they complement each other.
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