Matching model of flow table for networked big data

Networking for big data has to be intelligent because it will adjust data transmission requirements adaptively during data splitting and merging. Software-defined networking (SDN) provides a workable and practical paradigm for designing more efficient and flexible networks. Matching strategy in the flow table of SDN switches is most crucial. In this paper, we use a classification approach to analyze the structure of packets based on the tuple-space lookup mechanism, and propose a matching model of the flow table in SDN switches by classifying packets based on a set of fields, which is called an F-OpenFlow. The experiment results show that the proposed F-OpenFlow effectively improves the utilization rate and matching efficiency of the flow table in SDN switches for networked big data.Comment: 14 pages, 6 figures, 2 table

MEAT-GOAT MARKET ANALYSIS: A PILOT STUDY OF THE SOMALI MARKET IN COLUMBUS, OH

This case study focuses on meat goat marketing involving one distinct immigrant group residing in one area of Columbus, Ohio: the Somalis. There are about 20,000-25,000 Somalis living in Columbus, the second largest concentration of Somalian immigrants in the U.S. after Minneapolis-St. Paul, Minnesota. It is estimated that Columbus Somalis consume the meat from about 14,000 goats each year. The objective of this pilot study is to analyze the meat goat marketing and consumption patterns of the Somali immigrant population of Columbus, Ohio. Understanding gained in the Somali meat market will assist in determining the feasibility of establishing a more structured marketing system, including the possible need for a processing plant dedicated to goat meat. The Southern Ohio Meat Goat Task Force is a group of meat-goat producers, marketers, OSU extension professionals, and Ohio Cooperative Development Center staff members that are working with the meat-goat industry to assess and develop goat production, processing, and meat marketing in Ohio. Tours of several retail shops within the Somali community were conducted to further understand the preferences of the Somali population. Interviews were conducted with a slaughter-plant manager in nearby Detroit, Michigan, the current major supplier of fresh goat meat to the Columbus market. During January and March 2003, two focus-group sessions were organized and conducted by task force members with Somali consumers, entrepreneurs, and retail grocery owners. Significant results and discussion presented in detail within this research report include: Somalia's prefer fresh over frozen goat meat, pricing is a key determinant in meat choices for Somali consumers, goat meat and lamb meat are somewhat substitutable in Somali diets, Somalis will substitute halal chicken and beef if lamb and goat meat is not available, lean grass-fed carcass is preferred to a grain-fed goat, Somalis eat goat meat 1-2 times a day year-round, most people feeding families buy a whole carcass, and only a slight preference was indicated between the halal and kosher slaughter practices.Agribusiness,

INTELLIGENT INTENT-RECOMMENDER IN INTENT-BASED NETWORKING (IBN) USING UNKNOWN TRAFFIC IDENTIFICATION

An intent recommendation system for an Intent-Based Networking (IBN) system classifies unknown traffic in a network environment using machine learning. The intent recommendation system provides a network administrator with full visibility of their network traffic so they can properly define their intent for network traffic flows within a traditional IBN model. Based on the categorization of unknown network traffic the intent recommendation system provides recommendations for how the network administrator should define their intents for each unknown network flow. The network administrator may choose whether or not to follow the intent recommendation for each unknown network traffic flow. A feedback loop incorporates the decision of the network administrator to validate and improve the suggested intents for each unknown network traffic flow cluster

Association between Helicobacter pylori infection and inflammatory bowel disease: A meta-analysis and systematic review of the literature

Background: Epidemiologic data suggest a protective effect of Helicobacter pylori infection against the development of autoimmune disease. Laboratory data illustrate H. pylori 's ability to induce immune tolerance and limit inflammatory responses. Numerous observational studies have investigated the association between H. pylori infection and inflammatory bowel disease (IBD). Our aim was to perform a systematic review and meta-analysis of this association. Methods: Medline, EMBASE, bibliographies, and meeting abstracts were searched by 2 independent reviewers. Of 369 abstracts reviewed, 30 promising articles were reviewed in detail. Twenty-three studies met our inclusion criteria (subject N = 5903). Meta-analysis was performed with the metan command in Stata 10.1. Results: Overall, 27.1% of IBD patients had evidence of infection with H. pylori compared to 40.9% of patients in the control group. The estimated relative risk of H. pylori infection in IBD patients was 0.64 (95% confidence interval [CI]: 0.54–0.75). There was significant heterogeneity in the included studies that could not be accounted for by the method of IBD and H. pylori diagnosis, study location, or study population age. Conclusions: These results suggest a protective benefit of H. pylori infection against the development of IBD. Heterogeneity among studies and the possibility of publication bias limit the certainty of this finding. Further studies investigating the effect of eradication of H. pylori on the development of IBD are warranted. Because environmental hygiene and intestinal microbiota may be strong confounders, further mechanistic studies in H. pylori mouse models are also necessary to further define the mechanism of this negative association. (Inflamm Bowel Dis 2009;)Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75792/1/21116_ftp.pd

A psychometric evaluation of the interRAI Child and Youth Mental Health instruments (ChYMH) anxiety scale in children with and without developmental disabilities

Background: With 10 to 20% of Canadian children suffering with mental illness, the importance of early identification and accurate assessment systems is clear. Unfortunately, many do not receive the mental health treatment necessary and wait-times for assessment can span up to a year. In response, the interRAI suite of assessments were designed to comprehensively assess early signs of mental health impairments in children from birth to 18 years. Methods: This study assesses the psychometric properties of the Anxiety Scale and addresses the identification of anxiety within children diagnosed with intellectual and developmental disabilities (IDD); a commonly underrepresented sample in mental health psychometric studies. Data was collected from children aged 4-18 years in three different samples. Results: Results indicated reliable internal consistency and factor structure, as well as moderate-to-strong convergent validity. Conclusions: We conclude that the Anxiety Scale exhibits psychometric qualities which demonstrate its clinical utility for use within a child sample, as well as in children with IDD. The findings provide support to a larger body of research which show consistent psychometric rigour of the interRAI measures

Application of the levitation technique for investigation of metal alloys and phase equilibria in slags

Experimental methods, based on electromagnetic levitation, have been developed for preparation and investigation of copper-rich alloys, and for the determination of oxide-metal phase equilibria. These techniques involve high-temperature equilibration, rapid quenching and chemical analysis of the phases using electron probe X-ray microanalysis. The experiments can be carried out in the temperature range 1373-1873 K (= 1100 degrees C-1600 degrees C). A developed calibration method, using phase equilibria data in known oxide systems, was applied for pyrometric temperature measurements. Described methods of the application of the electro-magnetic levitations were used for in-situ formation of Cu-based alloys and for formation of Ca-ferrite slags equilibrated with metallic copper