Seer: a lightweight online failure prediction approach

Online failure prediction aims to predict the manifestation of failures at runtime before the failures actually occur. Existing online failure prediction approaches typically operate on data which is either directly reported by the system under test or directly observable from outside system executions. These approaches generally refrain themselves from collecting internal execution data that can further improve the prediction quality. One reason behind this general trend is due to the runtime overhead cost incurred by the measurement instruments that are required to collect the data. In this work we conjecture that large cost reductions in collecting internal execution data for online failure prediction can derive from reducing the cost of the measurement instruments, while still supporting acceptable levels of prediction quality. To evaluate this conjecture, we present a lightweight online failure prediction approach, called Seer. Seer uses fast hardware performance counters to perform most of the data collection work. The data is augmented with further data collected by a minimal amount of software instrumentation that is added to the systems software. We refer to the data collected in this manner as hybrid spectra. We applied the proposed approach to three widely used open source subject applications and evaluated it by comparing and contrasting three types of hybrid spectra and two types of traditional software spectra. At the lowest level of runtime overheads attained in the experiments, the hybrid spectra predicted the failures about half way through the executions with an F-measure of 0.77 and a runtime overhead of 1.98%, on average. Comparing hybrid spectra to software spectra, we observed that, for comparable runtime overhead levels, the hybrid spectra provided significantly better prediction accuracies and earlier warnings for failures than the software spectra. Alternatively, for comparable accuracy levels, the hybrid spectra incurred significantly less runtime overheads and provided earlier warnings

The Characteristics of Upper Extremity Arterial Injuries

Upper extremity arterial injuries have lower amputation rates, but havehigher morbidity due to concomitant nerve injuries. The aim of this study isto characterize upper extremity arterial injuries. Upper extremity vascularinjuries was retrospectively reviewed in our hospital. The mean age was22,64 ±10,10. 0f 200 patients, there were 172 male. The most common causeof injury was penetrating objects (71 %). The second common cause wasgunshot wounds (21 %). The common area of injury was distal to brachialartery (71 %). The rate of associated venous injury was 9.5 %, nerve injury23 %, and bone fractures were seen in 13 %. Vascular reconstruction wastried in all cases. In one case of traumatic amputation, reimplantation wastried but failed. The rates of mortality and amputation were lower in upperextremity arterial injuries

A Rare Form of Mesothelioma: Malignant Pleural Deciduoid Mesothelioma

Mesothelioma usually develops in elder male patients that are exposed to asbestos. Deciduoid mesothelioma is a rare variant of epithelioid mesothelioma and has a poorer prognosis than epithelioid mesothelioma. As this subtype was seen in the peritoneum of young females and its relation with asbestos was not definite, these lesions were formerly thought to be stimulated by endogenous hormones. In the subsequent years, a relation was established between this tumor and asbestos since it was seen in the pericardium and pleura of males. In this paper, we present a 64-year-old male patient with asbestos exposure, diagnosed as having malignant pleural deciduoid mesothelioma, in which a long survival was provided with chemotherapy after surgeryMesothelioma usually develops in elder male patients that are exposed to asbestos. Deciduoid mesothelioma is a rare variant of epithelioid mesothelioma and has a poorer prognosis than epithelioid mesothelioma. As this subtype was seen in the peritoneum of young females and its relation with asbestos was not definite, these lesions were formerly thought to be stimulated by endogenous hormones. In the subsequent years, a relation was established between this tumor and asbestos since it was seen in the pericardium and pleura of males. In this paper, we present a 64-year-old male patient with asbestos exposure, diagnosed as having malignant pleural deciduoid mesothelioma, in which a long survival was provided with chemotherapy after surger

Non-Invasive Mechanic Ventilation Using in Flail Chest, Caused By Blunt Chest Trauma

A 75-year-old woman admitted our faculty emergency room with shortness of breath, and chest pain after traffic accident’s second hour. She was diagnosed as bilateral multipl rib fractures, left clavicula fracture, and left flail chest by phsical and radiological examinations. She was transfered to Chest Surgery Depatment’s intensive care unit. The patient was undergone non-invasive mask mechanic ventilation support, because of the decreasing of blood oxygen saturation and increasing of arteriel blood partial carbondioxide pressure. The treatment of non-invasive mechanic ventilation was succesfull for ventilation support. With this report, we would like to attentioned that non-invasive mechanic ventilation for blunt chest trauma patients could be used succesfully and could be used instead of endotracheal invasive mechanic ventilation

Vertical Mammaplasty for Gigantomastia

WOS: 000264457400020PubMed: 18953594A 48-year-old female patient presented with gigantomastia. The sternal notch-nipple distance was 55 cm for the right breast and 50 cm for the left. Vertical mammaplasty based on the superior pedicle was performed. The resected tissue weighed 3400 g for the right breast and 2800 g for the left breast. The outcome was excellent with respect to symmetry, shape, size, residual scars, and sensitivity of the nipple-areola complex. Longer pedicles or larger resections were not found in the literature on vertical mammaplasty applications. In our opinion, by using the vertical mammaplasty technique in gigantomastia it is possible to achieve a well-projecting shape and preserve NAC sensitivity

Long-term objective results of proximal phalanx fracture treatment

WOS: 000292134600012PubMed: 21935805BACKGROUND Proximal phalanx fractures are common. In this study, our preferred methods regarding the treatment of proximal phalanx fractures and their long-term objective results are presented. METHODS Between October 2001 and March 2010, in the Plastic Reconstructive and Aesthetic Surgery Department of Duzce Medical Faculty, we treated 23 patients with 32 proximal phalanx fractures. Stable fractures (n=5) were treated with splints, while unstable fractures (n=27) were stabilized with 1.0 mm percutaneous intramedullary Kirschner wires following open reduction. RESULTS At follow-ups, ranging from 3 months to 9 years, patients were evaluated with radiologic efficiency, range of motion (ROM), total active movements (TAM), and grip power of the digit. TAM scores of 20 fingers were perfect (>= 220 degrees for D2-5, >= 150 degrees for D1), for 7 fingers were good (180-220 degrees for D2-5, 120-150 degrees for D1), and for 5 fingers were either moderate or poor. No difference was observed between grip strength of broken fingers and that of healthy fingers. As a major complication, non-union occurred in one finger. CONCLUSION We concluded that Kirschner wire fixation is a reliable and simple method of treating unstable proximal phalangeal fractures, and excellent long-term results can be obtained in suitable cases. In stable proximal phalanx fractures, splints provide sufficient treatment

HPV-related scrotal verrucous carcinoma and anal condyloma acuminatum

Gurol, Yesim/0000-0003-4195-8357WOS: 000272086900035PubMed: 19661019