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DOS Attack on the Availability of Cloud Network and its Avoidance Mechanism
( Syed Muhammad Asad Zaidi ),( Waleed Akram Baig ),( Hassan Redwan ),( Ki-hyung Kim ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1
Data centers are usually under provisioned. This is not a problem in corporate data networks, but it can be a problem in cloud data networks. If an application is being served by that cloud infrastructure, the application owner must know the infrastructure limitations and should take some special measures to ensure QoS/availability of that application and to prevent against possible threats. In this paper we have discussed a new form of DoS that could take place in a cloud data network using the vulnerability caused by under provisioned network. We have also proposed a solution for this DoS attack, by which not only this attack will be detected, but can also be avoided in a very short time.
Radiotherapy in aggressive cutaneous pseudolymphoma:a case report and review of literature
Deepa Joseph,Monica Malik Irukulla,Syed Fayaz Ahmed,Deepthi Valiyaveettil,Syed Akram 대한방사선종양학회 2016 Radiation Oncology Journal Vol.34 No.1
Pseudolymphoma is a nonspecific disease characterized by lesions with lymphomatous-appearing but benign accumulation of inflammatory cells. They generally present as small ulcero-nodular lesions confined to skin which often respond to local therapies. We describe an unusual presentation of an extensive and locally aggressive cutaneous pseudolymphoma in a 21-year-old male patient who presented with extensive cutaneous eruptions gradually progressing over 6 years to involve the entire circumference of his left arm. Magnetic resonance imaging scans of his left arm showed a lesion deeply infiltrating into the soft tissue reaching up to the humerus with intense periosteal reaction. He was successfully treated with radiotherapy after many failed attempts with surgery and chemotherapy.
Abdul Rafay Qazi,Faizan Iqbal,Syed Shahid Noor,Nasir Ahmed,Akram Ali Uddin,Nouman Memon,Naveed Memon 대한정형외과학회 2021 Clinics in Orthopedic Surgery Vol.13 No.1
Background: Due to extensive fibrosis during revision surgery, adequate exposure is essential and it can be achieved with several extensile approach options, such as tibial tubercle osteotomy. Information regarding surgical exposure during revision arthroplasty is limited in developing countries, such as Pakistan, due to the lack of adequate data collection and follow-up. Therefore, the purpose of this study was to evaluate the impact of tibial tubercle osteotomy on final outcome of revision total knee arthroplasty (TKA). Methods: A total of 231 revision TKAs were performed between January 2008 and December 2017. Twenty-nine patients underwent tibial tubercle osteotomy for adequate exposure during revision surgery. Of these, 27 patients with complete follow-up were included in our study. Factors examined include age at the time of revision surgery, gender, comorbidities, arthroplasty site (right or left), body mass index (BMI), and primary indications for the tibial tubercle osteotomy during revision TKA. Functional outcome was measured by using Knee Society score (KSS) at 3 months and the final follow-up. All statistical analysis was done using SPSS version 20.0 with a p-value < 0.05 considered significant. Results: Out of 27 patients, 6 patients (22.2%) were men and 21 patients (77.7%) were women. Right knee revision arthroplasty was performed in 15 patients (55.5%), left knee revision arthroplasty was performed in 12 patients (44.4%), and bilateral revision surgery was performed in only 1 patient (3.7%). The mean BMI was 29.2 kg/m2. We used a constrained condylar knee in 20 patients (74%), a rotating hinge knee in 5 patients (18.5%), and mobile bearing tray plus metaphyseal sleeves in 2 patients (7.4%). The KSS was 52.21 ± 4.05 preoperatively, and 79.42 ± 2.2 and 80.12 ± 1.33 at 3 months and 12 months, respectively. Radiological union was achieved in all patients at 3 months. Of 27 patients, only 1 patient (3.7%) had proximal migration of the osteotomy site at 6 months: the patient was asymptomatic and union was also achieved and, therefore, no surgical intervention was performed. Conclusions: Tibial tubercle osteotomy during revision TKA can be a safe and reliable technique with superior outcomes and minimal complication rates.
Radiotherapy in aggressive cutaneous pseudolymphoma: a case report and review of literature
Joseph, Deepa,Irukulla, Monica Malik,Ahmed, Syed Fayaz,Valiyaveettil, Deepthi,Akram, Syed The Korean Society for Radiation Oncology 2016 Radiation Oncology Journal Vol.34 No.1
Pseudolymphoma is a nonspecific disease characterized by lesions with lymphomatous-appearing but benign accumulation of inflammatory cells. They generally present as small ulcero-nodular lesions confined to skin which often respond to local therapies. We describe an unusual presentation of an extensive and locally aggressive cutaneous pseudolymphoma in a 21-year-old male patient who presented with extensive cutaneous eruptions gradually progressing over 6 years to involve the entire circumference of his left arm. Magnetic resonance imaging scans of his left arm showed a lesion deeply infiltrating into the soft tissue reaching up to the humerus with intense periosteal reaction. He was successfully treated with radiotherapy after many failed attempts with surgery and chemotherapy.