ALOHA With Collision Resolution(ALOHA-CR): Theory and Software Defined Radio Implementation

A cross-layer scheme, namely ALOHA With Collision Resolution (ALOHA-CR), is proposed for high throughput wireless communications in a cellular scenario. Transmissions occur in a time-slotted ALOHA-type fashion but with an important difference: simultaneous transmissions of two users can be successful. If more than two users transmit in the same slot the collision cannot be resolved and retransmission is required. If only one user transmits, the transmitted packet is recovered with some probability, depending on the state of the channel. If two users transmit the collision is resolved and the packets are recovered by first over-sampling the collision signal and then exploiting independent information about the two users that is contained in the signal polyphase components. The ALOHA-CR throughput is derived under the infinite backlog assumption and also under the assumption of finite backlog. The contention probability is determined under these two assumptions in order to maximize the network throughput and maintain stability. Queuing delay analysis for network users is also conducted. The performance of ALOHA-CR is demonstrated on the Wireless Open Access Research Platform (WARP) test-bed containing five software defined radio nodes. Analysis and test-bed results indicate that ALOHA-CR leads to significant increase in throughput and reduction of service delays

A CLINICAL EVALUATION OF PANCHAGAVYA GHRITA IN BAL APASMARA (EPILEPSY IN PAEDIATRIC AGE GROUP)

Background: Epilepsy is defined as the primary disorder of the brain due to an abnormal and excessive neuronal activity involving cerebral grey matter, resulting in a seizure.Objective: The objective was to do a clinical evaluation of Panchagavya ghrita in Bal apasmara (epilepsy in paediatric age group).Materials and Methods: It is a randomized open interventional parallel efficacy drug trial. A total number of 60 patients were selected from the age group of 4 years to 16 years of age. All the patients were recently diagnosed with Idiopathic type of epilepsy and were not on any kind of medication, before the start of the study. The selected patients were randomly divided into two groups – The patients in Group I (n = 30) were given Panchagavya ghrita and patients in Group II (n = 30) were kept on Tab. Tegretol for the study. Both the groups were studied for 12 months to see the efficacy of the drug.Results: Group I showed Statistically significant results in Frequency of convulsions, Duration of convulsion and Smritinasha (Amnesia). Where as in Group II highly significant results were observed in Frequency of convulsions and duration of convulsion; but not   significant results were observed in Smritinasha (Amnesia).Conclusion: Panchagavya ghrita has shown promising results in the management of Bal - apasmara (Epilepsy in paediatric age group) without any complications and side-effects

Synthetic sequence generator for recommender systems - memory biased random walk on sequence multilayer network

Personalized recommender systems rely on each user's personal usage data in the system, in order to assist in decision making. However, privacy policies protecting users' rights prevent these highly personal data from being publicly available to a wider researcher audience. In this work, we propose a memory biased random walk model on multilayer sequence network, as a generator of synthetic sequential data for recommender systems. We demonstrate the applicability of the synthetic data in training recommender system models for cases when privacy policies restrict clickstream publishing.Comment: The new updated version of the pape

A COMPARATIVE STUDY OF BHUJANGASANA WITH KATIBASTI OVER ONLY KATIBASTI IN GRUDHRASI (SCIATICA)

Background: Grudhrasi (Sciatica) is one of the eighty Vatavyadhi mentioned in Ayurvedic Samhitas, which is caused by aggravated Vatadosha. This is characterized by Ruja (pain) in the waist, back, thigh, knee and calf regions along the course of Sciatic nerve. There are many treatment modalities available in Ayurveda and Modern medical science. They have some or the other shortcomings and drawbacks.Objectives: To evaluate the efficacy of Bhujangasana with Katibasti over only Katibasti.Materials and Methods: It is a randomized open interventional parallel efficacy drug trial. A total number of  40 patients were selected from OPD. All the patients were having classical presentation of Grudhrasi and SLR test positive between 300 and 700. The selected were randomly divided in to two groups, namely, Group A (study group n = 20) and Group B (control group n = 20). Group A was given Bhujangasana with Katibasti and Group B was given Katibasti only. The data were collected and observations were made before the treatment, on 8th day, 15th day and on 22nd day of the treatment. The data obtained from the result were subjected for statistical analysis and conclusions were drawn.Results: In Group A, 85% patients were totally relieved of pain and 15% patients were reported to have moderate pain. In Group B, 55% patients reported total relief from pain and 25% had mild pain. In 90% cases SLR became negative in Group A, whereas in Group B 75% patients reported negative result in SLR test.Conclusion: Analysis of overall effect of treatment in the present study reveals that Bhujangasana with Katibasti was statistically significant compared to that of Katibasti

Integrating Communication Skills and Planning Techniques

Practitioners have long stressed the need to teach professional commumcations skills to planning students. This paper describes ten years of experience in teaching a course in which communications skills and techniques of gathering and analyzing information are taught concurrently while investigating a problem of importance in the community. The course involves an ongoing collaboration, a "marriage of convenience," between an academic and a planner, casting city/county planning staff as clients for students This has proven useful for pedagogy and has had some positive impact on the community.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69149/2/10.1177_0739456X9201100206.pd

Divergent Annexin A1 expression in periphery and gut is associated with systemic immune activation and impaired gut immune response during SIV infection.

HIV-1 disease progression is paradoxically characterized by systemic chronic immune activation and gut mucosal immune dysfunction, which is not fully defined. Annexin A1 (ANXA1), an inflammation modulator, is a potential link between systemic inflammation and gut immune dysfunction during the simian immunodeficiency virus (SIV) infection. Gene expression of ANXA1 and cytokines were assessed in therapy-naïve rhesus macaques during early and chronic stages of SIV infection and compared with SIV-negative controls. ANXA1 expression was suppressed in the gut but systemically increased during early infection. Conversely, ANXA1 expression increased in both compartments during chronic infection. ANXA1 expression in peripheral blood was positively correlated with HLA-DR+CD4+ and CD8+ T-cell frequencies, and negatively associated with the expression of pro-inflammatory cytokines and CCR5. In contrast, the gut mucosa presented an anergic cytokine profile in relation to ANXA1 expression. In vitro stimulations with ANXA1 peptide resulted in decreased inflammatory response in PBMC but increased activation of gut lymphocytes. Our findings suggest that ANXA1 signaling is dysfunctional in SIV infection, and may contribute to chronic inflammation in periphery and with immune dysfunction in the gut mucosa. Thus, ANXA1 signaling may be a novel therapeutic target for the resolution of immune dysfunction in HIV infection