Various Component handling services for Software Defined Networking (SDN)

Software Defined Networking (SDN) provides us the platform for the easy management of various components, which was not possible in traditional networks. SDN is flexible and scalable because of the separation between control and data plane. OpenFlow protocol acts as the interface between both planes. The concept is that we can create control logic and implement it in network elements of the data plane through centralized control. The controller and the policy need to be updated regularly to meet the requirement of the network. In this paper we have discussed the need of security approaches that can detect any kind of fault or abnormal behavior with in the network and to manage the packet flow metrics. Also how can we distribute the global policy across each of the element in data plane so that the global policy becomes local to each networking elements

The Components that can Build Flexible

SDN (Software Defined Network) is a new networking approach towards current networking industry. S.D.N has attarcted the researchers attention, because there is wide scope of innovation and research. The main concept behind the SDN networks is the separation of controller from data plane. This natural feature makes SDN adaptive of being flexible and scalable. We are mentioning some of the important components those are needed to make current SDN networks even better and efficient that can be managed easily and updated whenever needed, without any interruption of services. Also we have discussed how we can manage the data plane, control plane and how we can identify where fault has occurred

Using multiple sensors for printed circuit board insertion

As more and more activities are performed in space, there will be a greater demand placed on the information handling capacity of people who are to direct and accomplish these tasks. A promising alternative to full-time human involvement is the use of semi-autonomous, intelligent robot systems. To automate tasks such as assembly, disassembly, repair and maintenance, the issues presented by environmental uncertainties need to be addressed. These uncertainties are introduced by variations in the computed position of the robot at different locations in its work envelope, variations in part positioning, and tolerances of part dimensions. As a result, the robot system may not be able to accomplish the desired task without the help of sensor feedback. Measurements on the environment allow real time corrections to be made to the process. A design and implementation of an intelligent robot system which inserts printed circuit boards into a card cage are presented. Intelligent behavior is accomplished by coupling the task execution sequence with information derived from three different sensors: an overhead three-dimensional vision system, a fingertip infrared sensor, and a six degree of freedom wrist-mounted force/torque sensor

A polarization insensitive ultrathin compact triple band metamaterial absorber

In this paper, design, characterization and measurements of an ultrathin compact polarization insensitive triple band metamaterial absorber for wide incident angle have been presented. The unit cell design consists of a Jerusalem cross shaped resonator inside a square loop resonator. The proposed absorber exhibits triple band absorption at 4.4, 6.48 and 15.44 GHz with 96.6% and 97.64% and 85.81% absorptivity, respectively, for wide incident angles of electromagnetic wave. The absorption frequencies can be effectively adjusted for C, X and Ku frequency bands by optimizing the dimensions of the absorber design. The proposed absorber is ultrathin (0.014 λ0) in thickness and compact (0.12 λ0) in size at the lowest frequency of absorption. The proposed absorber exhibits TE and TM polarization stability and provides high absorption up to the incident angle of 60°. A prototype of the proposed absorber structure has been fabricated and experimentally tested for normal and oblique incidences for TE and TM polarization. The measured responses have been observed in agreement with the simulated ones

An ultrathin polarization insensitive frequency selective surface for wide stop band RF applications

In this paper, a compact, polarization insensitive, wide stop band frequency selective surface (FSS) has been proposed to serve C, X and Ku band applications. The unit cell of the proposed FSS consists of the combination of square loop and Jerusalem cross dipole elements to achieve wide stop band with a -10 dB bandwidth of 15.96 GHz from 5.45 GHz to 21.41 GHz. The periodicity and overall thickness of the structure are 0.32 λ0 and 0.04 λ0, respectively. The proposed design is polarization insensitive and provides a wide stop band response for large angles of incident wave with TE or TM polarization. Equivalent circuit analysis has also been performed to verify the simulated results. A prototype of proposed structure has been fabricated and experimentally tested. The measured results have been observed in agreement with the simulated results

Practices of face mask use and associated factors during COVID-19 pandemic among school-going children in Shimla city

Background: The aim of the study was to determine the practices of face mask use and associated factors during the COVID-19 pandemic among school-going children in Shimla city.Methods: An observational study was performed in October 2021 to November 2021, with 703 students chosen using a simple random sampling procedure in Shimla city. Data was collected based on observation and analyzed using Epi info version 7. To predict the relationship between the student mask-wearing compliance and its associated factors, a univariate analysis was done.Results: A total of 703 students, 41.8% (n=294) were males while 58.2% (n=409) were females, 40.5% (n=285) 15 years of age. 97.2% (n=683) were Hindu and 72% (n=506) were studying in Government schools. All of the observed (100%) were wearing masks. 76.2% (n=536) students were using cloth mask, 12.1% (n=85) N95 masks while 11.7% (n=82) surgical masks. 81.8% (n=575) covered their mouth, as well as nose, 3.7% (n=26), had masks below the chin, 2.6% (n=18) had only their mouth covered while 11.9% (n=84) had partially covered their nose. Cloth mask was considerably more used by girls besides that there was no significant difference in the type of face mask according to age, standard of class, father’s occupation and type of school. The face mask was significantly more appropriately used by the students <15 years old and studied in junior classes, there was no significant difference in mask-wearing habits according to gender, father’s occupation and type of school.Conclusions: Every student was wearing a mask, and most had good face coverage. School authorities should plan and implement IEC activities, about, types of face masks and their proper usage

Oxygen requirements in multisystem inflammatory syndrome in children admitted in tertiary care hospital of North India

Background: Study was aimed to describe the oxygen requirements among children admitted as multisystem inflammatory syndrome in children (MIS-C) in Indira Gandhi Medical College, Shimla.Methods: We conducted a cross-sectional study, from January 2021 to July 2021, in the pediatric ward of Indira Gandhi Medical College (IGMC), Shimla. Children admitted with a diagnosis of MIS-C were included. Data regarding socio-demographic factors and oxygen requirements were extracted and analyzed using Epi Info V7 software.Results: A total 31 children diagnosed as MIS-C were included. Tachypnea was present in 18 (58.1%) respiratory distress in 15 (48.4%). Optimal oxygen saturation (SpO2) more than 94% in 9 (25.8%), 93-94% in 8 (25.8%), 91-92% in 5 (16.1%), 86-90% in 2 (6.5%), 81-85% in 4 (12.9%), 75-80% in 1 (3.2%), 71-75% in 1 (3.2%) and <60% in 1 (3.2%). Oxygen at the rate of 2 l/min in 1 (3.2%), 3 l/min in 2 (6.5%), 4 l/min in 1 (3.2%), 5 l/min in 5 (16.1%) and 10 l/min in 9 (29.0%), was given through nasal prong in 1 (3.2%), Venturi mask in 3 (9.7%), NRM in 7 (22.6%) and mechanical ventilation in 7 (22.6%). Duration was for 2 days in 4 (12.9%), for 3 days in 7 (22.6%), for 4 days in 3 (9.7%), for 7 days in 1 (3.2%), for 10 days in 1 (3.2%), for 11 days in 1 (3.2%) and for 13 days in 1 (3.2%). Ventilatory support was given to 7 (22.6%), for 4 days in 2 (6.5%), for 7 days in 2 (6.5%), for 10 days in 1 (3.2%), for 11 days in 1 (3.2%) and for 13 days in 1 (3.2%).Conclusions: Oxygen is a crucial component of MIS-C therapy, children, observing a dip in SpO2 level should immediately start oxygen therapy

Effect of dietary palm olein oil on oxidative stress associated with ischemic-reperfusion injury in isolated rat heart

BACKGROUND: Palm olein oil (PO), obtained from refining of palm oil is rich in monounsaturated fatty acid and antioxidant vitamins and is widely used as oil in diet in many parts of the world including India. Palm oil has been reported to have beneficial effects in oxidative stress associated with hypertension and arterial thrombosis. Oxidative stress plays a major role in the etiopathology of myocardial ischemic-reperfusion injury (IRI) which is a common sequel of ischemic heart disease. Antioxidants have potent therapeutic effects on both ischemic heart disease and ischemic-reperfusion injury. Information on the effect of PO on ischemic-reperfusion injury is, however, lacking. In the present study, the effect of dietary palm olein oil on oxidative stress associated with IRI was investigated in an isolated rat heart model. Wistar rats (150–200 gm) of either sex were divided into three different groups (n = 16). Rats were fed with palm olein oil supplemented commercial rat diet, in two different doses [5% v / w (PO 5) and 10% v / w (PO 10) of diet] for 30 days. Control rats (C) were fed with normal diet. After 30 days, half the rats from each group were subjected to in vitro myocardial IRI (20 min of global ischemia, followed by 40 min of reperfusion). Hearts from all the groups were then processed for biochemical and histopathological studies. One way ANOVA followed by Bonferroni test was applied to test for significance and values are expressed as mean ± SE (p < 0.05). RESULTS: There was a significant increase in myocardial catalase (CAT), superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities with no significant change in myocardial thiobarbituric acid reactive substances (TBARS) only in group PO 5 as compared to group C. There was no light microscopic evidence of tissue injury. A significant rise in myocardial TBARS and depletion of myocardial endogenous antioxidants (SOD, CAT and GPx) along with significant myocyte injury was observed in control rats subjected to ischemia-reperfusion (C IR). Hearts from palm olein oil fed rats subjected to ischemia-reperfusion (PO 5 IR and PO 10 IR) were protected from increase in TBARS and depletion of endogenous antioxidants as compared to C IR group. No significant myocyte injury was present in the treated groups. CONCLUSIONS: The present study demonstrated for the first time that dietary palm olein oil protected rat heart from oxidative stress associated with ischemic-reperfusion injury