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Journal of Mobile, Embedded and Distributed Systems
Number of Followers: 15  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2067-4074 - ISSN (Online) 2067-4074
Published by JMEDS Homepage  [1 journal]
  • Trust based secure information exchange between user and sensor node using
           authentication method and verified at each gateway node in wireless
           networks

    • Authors: V.SUNIL KUMAR vemula, SRUJAN CHANDRA REDDY D
      Abstract: Day to day usage of wireless network is increased rapidly. A wireless communication between user and sensor node may not be authenticated may be attacker is reside on gateway node and try to retrieve the confidential data from both parties and after hacking information force attacks. In this paper we proposed a new method of mutual authentication method using temporal credential values to protect from attacks. In our method user and sensor nodes must registered with gateway node before start communication and gateway node issue smart values to both user and sensor node with a period of validity. We have done cryptanalysis on earlier methods and we come to know that still there is a possibility of forcing attacks. At the end we discussed how our method is protecting from different attacks when compared with earlier method.
      Issue No: Vol. 7, No. 3
       
  • Survey on Performance and Energy Consumption of Fault Tolerance in Network
           on Chip

    • Authors: Naresh Kumar Reddy
      Abstract: Network on Chip is a communication subsystem, which has the logic for sending and receiving the data from different sources in a single IC, is adopting the technology of VLSI making it to be as compact as possible. However, the increasing probability of failures in NOC’s has been raising concern among the researchers due to large scale integration of components. In specific the issues of fault-tolerance, increase in length of global wires of NOC has to be addressed for on chip and multi core architectures. This survey presents a perspective on existing NOC Faulttolerant algorithm and a Corresponding distributed fault analysis strategy that encourages in observing the fault status of individual NoC components and their adjacent communication links. The analysis of the Fault-tolerant Network subjected to dynamic workloads for large scale applications is also equally important. This research paper mainly emphasizes on Fault tolerant NOC strategies summarizing over thirty research papers
      Issue No: Vol. 7, No. 3
       
  • EPIDEMEOLOGY OF CHEST INJURY IN LONG BONE FRACTURES IN ROAD TRAFFIC
           ACCIDENT CASES

    • Authors: RAJIB DEBNATH
      Abstract: In modern day trauma centres, chest injury directly accounts for 20-25% of deaths due to trauma; chest injury or its complication are a contributing factor in a further 25% of trauma deaths. Approximately 85% of all chest trauma can be managed without surgical intervention, the mainstay of management are supplemental oxygen, intercostals drainage, good physiotherapy and pain control.Total 78 patients(62 males and 16 females) who met the inclusion and exclusion criteria between august 2014 and march 2015 were included in this study. History , general and local examination, xray (local injured area and chest), CT SCAN of chest was done. All patients evaluated at the time of presentation. Secondary outcome measured by operative procedure delay, preoperative, intra operative and post operative morbidity.After analysis, we had 35% patients diagnosed as one or multiple type chest injuries those who have long bone fractures and 79% patients was managed without surgical intervention. The mainstay of treatment was supplement oxygen, intercostals drainage, good physiotherapy and pain control. 7% of all long bone fractures had severe chest injuries which was treated on emergency basis in the casualty. Whereas 13 patients(16%) had chest injuries which increases pre operative, intra operative and post operative complications and also increases hospital stay. Around 9%(7 patients) chest injuries leads to delay in operative procedure.Proper examination of chest along with local examination of injured part in road traffic accident cases needed to diagnosis neglected or minor chest injuries which increases morbidity of the patient.
      Issue No: Vol. 7, No. 3
       
  • A Survey on Middleware Approaches for Distributed Real-Time Systems

    • Authors: Malihe Saghian, Reza Ravanmehr
      Abstract: Nowadays distributed real-time systems are very common in different areas and have many applications. Increasing need to exchange information among distributed and heterogeneous applications, the need for faster development, simplicity of design and implementation, software reuse and coordination problems are the major factors that lead to the design and implementation of middleware architectures in this field. For this purpose, different Quality of Service parameters such as reliability, extendibility, low latency, etc. must be considered. The current survey shows the state of the art of the various researches in this domain by providing and discussing the architecture and the features of major middlewares for distributed real-time systems.
      Issue No: Vol. 7, No. 3
       
  • Diabetic non-ketotic hyperglycemia and the hemichorea-hemiballismus
           syndrome: a case report

    • Authors: banashree gogoi, arun ajith
      Abstract: Diabetic non-ketotic hyperglycemia and thehemichorea-hemiballismus syndrome: a case report
      Authors : BanashreeGogoi, ArunAjithDepartment of Radiology, A J Institute Of Medical Sciences, Mangalore.Non-ketotic hyperglycemia induced hemichoreahemiballismus is a rare manifestation seen in diabetic patients. The patients presents with acute onset of involuntary movements. Imaging in these patients shows characteristic findings in the basal ganglia. We present a case of 74 year old male showing classical clinical and imaging features. Keywords: Hemichorea-Hemisballismus, Non-ketotic hyperglycemia, MRI CASE REPORT A 74 year male patient presented with ten-day history of sudden onset abnormal involuntary movements involving upper limbs. Patient was a known case of type 2 diabetes mellitus for the past 10 years on treatment. No history of neurological disorders or other significant illness was elicited. On examination patient had involuntary movements involving the upper limbs more on left side. Other neurological examination was normal. Laboratory investigations showed mean plasma glucose level of 380 mg/dl with HbA1c value 10.5%. The calculated serum osmolality was 306 mosm/l. Urine examination was negative for ketones. Rest of the blood tests was normal with no obvious electrolyte imbalance. CT of the brain was performed to rule out stroke.CT brain showed hyperdensity in right putamen region .Later MRI brain of the patient was performed for further evaluation. MRI showed hyperintensity involving right putamen region on T1w images. This region was isointense on T2w and FLAIR images. No restriction was seen on DW/ADC images. There was no evidence of any blooming seen on SW images. Based on clinical presentation, laboratory investigations and MRI finding diagnosis of Non ketotichyperglycaemichemichorea-hemiballismus syndrome was made. Hyperglycemia was corrected by insulin therapy followed by treatment with oral hypoglycemic agents. Patient improved symptomatically and was laterdischarged. Figure 1: CT image showing hyperdensity in the right putamen Figure 2 : T1 weighted image showing hyperintensity in the right putamen Figure 3 :T2 weighted image and FLAIR showing no signal intensity Figure 4: DWI and ADC images showing no evidence of diffusion restriction Figure 5: SWI and PHASE images showing no “blooming” DISCUSSION Diabetic patients with non-ketotichyperglycaemia can present with a rare clinical syndrome characterized by hemichoreahemiballism1.Bedwell, in the year 1960, first reported the association of Hemichorea-Hemisballismus with hyperglycemia2. The exact mechanism of how non-ketotichyperglycaemiacauses focal neurological symptoms is unknown. One hypothesis is related to depletion of inhibitory neurotransmitter GABA, which is metabolized in the brain as an energy source in non-ketotichyperglycaemia . The deficiency of GABA in basal ganglia may lead to hemichorea – hemiballismus syndrome. Another hypothesis involves transient focal cerebral ischemia caused by hyperglycemia. Cerebral hypoperfusion may result from an increase in cerebrovascular resistance due to the higher brain water content during hyperglycemia or to a loss of flow regulation caused by impaired metabolism3. CT brain in these patients shows e/o striatal hyperdensity.MRI reveals striatum hyperintense on T1w image, hypo/isointenseon T2w image, lack of restriction on diffusion imagesand no abnormality on GRE image4. Imaging reveals abnormal signal in the putamen with or without the involvement of the globuspallidus and caudate nucleus. The onset of Hemichorea-Hemisballismus is commonly caused by abnormal signal in the contralateral basal ganglia. However, Couple of cases of Hemichorea-Hemisballismus with involvement of the ipsilateral basal ganglia has been reported5. Cause of the signal changes is controversial with calcification6and petechial haemorrhage7 initially was postulatedto be the cause. However, histopathology studies and follow up imaging do not favor the above-mentioned theories.Histopathological findings by stereotacticbiopsy of striatum have revealed gliotic brain tissue containingabundant gemistocytes. This has suggested that the hyperintensitiesin T1 could be due to the protein hydration layer inside the cytoplasm of the swollen gemistocytes8,9. The imaging findings are usually reversible, but occasionally the signal changes may persist for years10. Patients improve immediately once the euglycemic treatment is instituted, however it may persist for a longer duration4. Conclusion Hemichoreahemiballism occurring in diabetes mellitus owing to non-ketotic hyperglycemia is a rather benign condition with a good prognostic outcome. Recognition of the characteristic clinicoradiological signs will help in prompt diagnosis, correct treatment and resolution of lesion in basal ganglia. References 1. Sanfield JA, Finkel J, Lewis S, Rosen SG. Alternating choreoathetosis associated with uncontrolled diabetes mellitus and basal ganglia calcification. Diabetes Care 1986; 9(1):100–1. 2. Hawley JS, Weiner WJ. Hemiballismus: current concepts and review. Parkinsonism RelatDisord 2012; 18(2):125–129. 3. Duckrow RB, Beard DC, Brennan RW. Regional Cerebral blood flow decreases during hyperglycemia. Ann Neurol1985;17: 267–72. 4. Shan DE, Ho DM, Chang C, Pan HC, Teng MM. Hemichoreahemiballism: an explanation for MR signal changes. Am J Neuroradiol 1998; 19: 863–70. 5. Postuma RB, Lang AE. Hemiballism: revisiting a classic disorder. Lancet Neurol 2003; 2(11):661–668. 6. Midroni G, Willinsky R. Rapid postanoxic calcification of the basal ganglia. Neurology 1992; 42: 2144-6. 7...
      Issue No: Vol. 7, No. 3
       
  • Policy Control Framework for IP based Online Video Surveillance
           Communications

    • Authors: Abhishek Mishra
      Abstract: There are around 15 million Surveillance camera installed in US and about 10% of it is IP based. This number of IP based surveillance is constantly growing as it gives an opportunity for smart real time surveillance. When the number of camera increases, it create a challenge to smart surveillance both in in terms of cost and efficiency. Cost- as to monitor so many views, there is a need to have enough people. Efficiency- due to overload of monitoring, there are chances that important tracking is missed. Intelligent surveillance helps in avoiding many such issues, however, there is a constant threat that due to lack of appropriate policy control framework, tracking may be impacted due to inherent network issues or human glitches. The paper presents a novel way, where a Policy control framework can be deployed for IP based Surveillance which will help in efficient monitoring
      Issue No: Vol. 7, No. 3
       
  • Rigorous design of moving sequencer atomic broadcast with malicious
           sequencer

    • Authors: Prateek Srivastava, Prasun Ckakrabarti, Avinash Panwar
      Abstract: This article investigates a mechanism to tolerate malicious nature of sequencer in moving sequencer based atomic broadcast at distributed systems. Various mechanisms are already given for moving sequencer based atomic broadcast like RMP [1], DTP [2], Pin Wheel [3] and mechanism proposed by [4]. But none of these mechanisms are efficient to tolerate different failure. Scholarly observation is that, these algorithms can tolerate only crash failure but not capable to tolerate omission or byzantine (malicious) failure. This work is an extension of [4]. In this work we have proposed a mechanism to tolerate byzantine failure (malicious nature) of sequencer in moving sequencer based atomic broadcast. For this we will consider [4] as an abstract model and design refined model that will tolerate malicious nature of sequencer. Since it relies on unicast broadcast hence it will introduce a very less number of messages in comparison to previous mechanisms [5].We have used B [6] as formal technique for development of our model. B uses set theory as a modeling notation, refinements to represent system at different abstraction level. We have used ProB [7] model checker and animator for constraint based checking, discover errors due to invariant violation and deadlocks, thereby, validating the specifications.
      Issue No: Vol. 7, No. 3
       
 
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