The increasing need for high-performance computing, preservation, and networking capabilities to support corporate and scientific applications is driving a rapid expansion in the use of cloud ...computing server farms. Virtual machine (VM) consolidation plays a crucial role in this context, involving the direct migration of VMs from underutilized physical servers to optimize power consumption efficiency, operational costs, and reduce CO2 emissions. A pivotal step in VM consolidation is the detection of host overload, which aims to predict potential server over-subscription with VMs. This paper introduces an Optimized Support Vector Regression model for overloaded detection. To enhance the Support Vector Regression (SVR) performance, optimal selection of SVR parameters is achieved using the Enhanced Tasmanian Devil Optimization algorithm. Following overload detection, VM migration occurs, but this process raises concerns about system integrity and data confidentiality. To address these concerns, data is encrypted using the Cyclic Shift Transposition Algorithm before migration. The proposed approach’s performance is evaluated across various metrics such as energy consumption, ESV, Migration, and SLA X0.001, and its effectiveness is compared with different existing methods.
The utilization of cloud computing server farms is developing quickly, and the interest in high-performance computing (HPC), stockpiling, and systems administration assets for business and logical ...applications is expanding. Virtual machine (VM) coordination includes the immediate migration of VMs running on fewer physical servers, accordingly permitting more workers to be killed or running in low force mode to improve power utilization proficiency, working expense, and CO2 emanations. A significant advance in VM reconciliation is the location of the host over-burden, which endeavors to anticipate whether the physics server will over-subscribe with VMs. For overloaded detection, in this paper optimized support vector regression (OSVR) model is proposed. Here, to enhance the performance of support vector regression (SVR), the parameters of SVR are optimally selected by using the Oppositional Beetle Swarm Optimization (OBSO) algorithm. After the overloaded detection, the virtual machines are migrated. However, during migration, the system integrity and confidentiality of data may be affected. To avoid the problem, before migration, the data are encrypted using Cyclic Shift Transposition Algorithm (CSTA). The performance of the proposed approach is analyzed in terms of different measures and effectiveness compared with different methods. The results shows that our proposed approach attained the minimum migration and energy consumption.
Acupuncture is an ancient system of medicine which involves introduction of specific needles in described sites into prescribed depths. A few apprehensions about this technique are the close ...proximity of the needles with vital structures and possible injuries. In the present paper, an attempt was made to use ultrasound which is a non invasive technique of identifying vital structures in two cases and to find out its utility. A 35-year-old, male history of alcoholism, presented with a wrist drop, was advised electroacupuncture where the needles were placed in the centre of the muscle bulk with ultrasound guidance to elicit good motor response. Another case, a 45-year-old female patient had tennis elbow where the superficial veins and nerves were avoided before pricking on selected sites. The response was as expected and normal. The first case had satisfactory motor recovery while the second one had adequate pain relief. There was neither bleeding from any site nor any other complications. A survey scan of the puncture site can be advised before inserting acupuncture needles. Ultrasound guided acupuncture is feasible without compromising the traditions. This concept becomes easier as ultrasound and acupuncture have been conveniently handled together by anaesthesiologists.
Managing supracondylar fractures provides distinct problems in the complex setting of paediatric trauma. A 36-month-old male child was admitted with accidental injury and supracondylar fracture of ...left humerus. There were no other injuries. The child was planned open reduction and internal fixation in the right lateral position. The plan was to administer nerve block. To satisfactorily transfer the baby, the authors administered 5 mg of oral diazepam to the mother after explanation. The patient was smoothly transferred inside with syrup promethazine 5 mL. After securing an intravenous access, and an intravenous pethidine of 10 mg, he was administered ultrasound guided brachial plexus block with a supraclavicular approach with 5 mL of 0.5% bupivacaine. The pain subsided and the patient slept well. The surgery and the postoperative period were uneventful. The authors concluded that sedating the mother prior will help in separation and nerve blocks can be administered in children in precise sites with the help of ultrasound but without supplemental general anaesthesia. This report is the first case report to do without the use of any intravenous anaesthetic drugs.
Elastomeric coatings are being advocated as excellent retrofit materials for strategic applications, particularly for blast mitigation and ballistic protection. Polyurea, an elastomer formed by the ...reaction of isocyanate and amine, possesses hard domains dispersed randomly within the soft domains, forming a heterogeneous landscape with a nano-segregated microstructure, with each domain exhibiting its own characteristic glass transition temperature. Commercialised in the late eighties, this relatively new entrant in the field of elastomers has received enormous attention in view of its excellent blast mitigation properties and ballistic protection. Although the literature is abundant with studies demonstrating the potential of polyurea for retrofitting applications, the underlying mechanism behind its exceptional properties has not yet been fully comprehended. The ballistic protection ability is attributed to the dynamic transition from "rubber to glass", which occurs when the material is subjected to extremely high strain rates, while the blast mitigation potential is attributed to a phenomenon more commonly referred to as "shock wave capture and neutralization". Since the blast mitigation and ballistic protection ability is decided by the hard and soft domains of polyurea, respectively, the polymer needs to be tuned for a particular application through judicious choice of the raw materials. The current article reviews the relevant publications in the field of polyurea-based retrofits including their preparation, characterization, properties and applications in the context of blast mitigation and ballistic protection.
Major developments in the area of blast mitigation using polyurea coatings as retrofit or existing structures are discussed.
Recent evidence has questioned the advantage of local anesthetic (LA) combinations. This study tested the hypothesis that mixing rapid-onset (lidocaine) and long-duration (bupivacaine) LA would ...provide faster onset of complete conduction blockade (CCB) compared with bupivacaine alone and longer duration of analgesia compared with lidocaine alone during low-volume (20 mL) ultrasound-guided (USG) supraclavicular brachial plexus block (SCBPB).
Sixty-three patients receiving USG-SCBPB were randomly allocated into: group
: 20 mL 2% lidocaine with epinephrine 1:200 000;
20 mL 0.5% bupivacaine;
: 20 mL of equi-volume mixture of both drugs. Sensory and motor blockade was recorded on a three point sensory and motor assessment scale at 10 min intervals for up to 40 min and the total composite score (TCS) at each time point was determined. The duration of analgesia was also noted.
The mean time to CCB of group LB (16±7 min) was comparable (p>0.05) with group L (14±6 min) and group B (21±8 min) in patients who were attained CCB. However, the proportion of patients attaining complete conduction block (TCS=16/16) was significantly lower (p=0.0001) in group B (48%) when compared with group L (95%) and group LB (95%) at the end of 40 min. The median (IQR) duration of postoperative analgesia was longest in group B; 12.2 (12-14.5) hours, followed by group LB 8.3 (7-11) hours and 4 (2.7-4.5) hours in group L.
At 20 mL LA volume, equal mixture of lidocaine and bupivacaine provided significantly faster onset of CCB compared with bupivacaine alone and longer duration of postoperative analgesia compared with lidocaine alone but shorter than bupivacaine alone during low-volume USG-SCBPB.
CTRI/2020/11/029359.
After neurosurgical procedures, perioperative seizures are relatively common. It is extremely rare for a patient to experience intraoperative jerky movements while under General Anaesthesia (GA). The ...authors, hereby presented a 25-year-old male who was scheduled for cranioplasty. The routine investigations within normal limits and there were no preoperative morbidities. He was taking phenytoin. The procedure began with a routine GA with controlled ventilation using sevoflurane and vecuronium. After 45 minutes of uneventful intraoperative course, perioperatively, involuntary jerking movements of his arms and legs were observed, which resolved on their own. A muscle relaxant was given to prevent further episodes of muscle jerks, but they persisted for a few minutes. Except for a slight increase in blood pressure, all other parameters were normal. Following a smooth extubation around 90 minutes later, he was shifted to postoperative high dependency unit with stable vitals. Supplemental oxygen was administered via a simple facial mask. The patient had another episode of persistent jerky movements of his foot lasting for 30 seconds after 10 minutes with no loss of consciousness. One mg of intravenous midazolam was administered. The complete absence of a loss of consciousness goes against a seizure. The postoperative course was uneventful and a follow-up for two months was non contributory. It can be concluded that a combination of sevoflurane and phenytoin in a setting of a neurosurgical intervention could have possibly caused a jerky motion. This case is presented for its rarity.
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