Diluting the Scalability Boundaries: Exploring the Use of Disaggregated Architectures for High-Level Network Data Analysis

Traditional data centers are designed with a rigid architecture of fit-for-purpose servers that provision resources beyond the average workload in order to deal with occasional peaks of data. Heterogeneous data centers are pushing towards more cost-efficient architectures with better resource provisioning. In this paper we study the feasibility of using disaggregated architectures for intensive data applications, in contrast to the monolithic approach of server-oriented architectures. Particularly, we have tested a proactive network analysis system in which the workload demands are highly variable. In the context of the dReDBox disaggregated architecture, the results show that the overhead caused by using remote memory resources is significant, between 66\% and 80\%, but we have also observed that the memory usage is one order of magnitude higher for the stress case with respect to average workloads. Therefore, dimensioning memory for the worst case in conventional systems will result in a notable waste of resources. Finally, we found that, for the selected use case, parallelism is limited by memory. Therefore, using a disaggregated architecture will allow for increased parallelism, which, at the same time, will mitigate the overhead caused by remote memory.Comment: 8 pages, 6 figures, 2 tables, 32 references. Pre-print. The paper will be presented during the IEEE International Conference on High Performance Computing and Communications in Bangkok, Thailand. 18 - 20 December, 2017. To be published in the conference proceeding

Development of image processing tools for measurementof beam straightness

The objective was to measure the straightness of steel beams as a non-contact mean and using image processing techniques. This work deals with the development of an image processing methodology to be employed in an inspection machine for measurement of straightness of moving steel beams. The method was embodied in a software that reads the position of the beams, correlates all the positions monitored by the cameras, and reports the quality of straightness of the beam. The inspection machine uses computer vision technology as a non contact measuring device. Video cameras are used to log information about the lateral position and height of steel beams while rolling on a conveyor from the production process. The number of cameras and the distance between them are user defined parameters. The technique developed is prepared to guarantee the measuring system operation if one camera is switched off or fails. This implies the ability of this system on using more than 3 cameras. The system output is the non linearity deviation of the beam, compensating factors for lateral or angular movements in the horizontal measuring plane of the beam and the beam profile. The output is displayed in a computer screen, according to the line method and the least squares method

Neocorus ibidionoides (Serville, 1834): notes on the biology, descriptions of the Larva and Pupa (Col., Cerambycinae)

.

The Network Origins of Economic Growth

In this paper, we propose a new approach to represent a country's outward orientation. Prior work mostly uses indicators of aggregate trade intensity, trade policy or trade restrictiveness. Our approach offers a broader perspective as it measures a country's level of integration not only by its set of direct trade connections with the rest of the world but also through the full architecture of its second, third, and all other higher-order connections. We apply our methodology to a sample of 167 countries spanning the period from 1962 to 2009 and perform a Bayesian modelaveraging analysis on the determinants of growth. We find a prominent positive effect of integration on a country's level of per capita income, while the aforementioned traditional measures of outward orientation display only a secondary, largely insignificant, weight. This, we argue, highlights the network basis of economic growth and adds a novel perspective to the notion of economic openness. We also perform several sensitivity checks and conclude that our baseline findings are extremely robust to different data input and alternative assumptions about the computation of country integration

Allowing content-based functionalities in segmentation-based coding schemes

This paper deals with the use of the segmentation tools and principles presented in [10] and [13] for allowing content-based functionalities. In this framework, means for supervised selection of objects in the scene are proposed. In addition, a technique for object tracking in the context of segmentation-based video coding is presented. The technique is independent of the type of segmentation approach used in the coding scheme. The algorithm relies on a double partition of the image that yields spatially homogeneous regions. This double partition permits to obtain the position and shape of the previous object in the current image while computing the projected partition. In order to demonstrate the potentialities of this algorithm, it is applied in a specific coding scheme so that content-based functionalities, such as selective coding, are allowed.Peer ReviewedPostprint (published version

Fatalities due to intestinal obstruction following the ingestion of foreign bodies

Two fatalities due to an occlusive ileus following the ingestion of foreign bodies in patients with psychiatric disorders are described. A severely mentally handicapped young man developed a temperature and died 1 h after admission to a surgical ward. At autopsy, not, vert, similar 2000 cm3 of foreign material, including broken glass and porcelain, branches, buttons, parts of clothing and other material were found in the gastrointestinal tract, leading to a complete obstruction of the distal intestine and colon with resulting faecal vomiting. The other case was even more unusual as a hair fetishist had swallowed a thick strand of his own hair, 50 cm long, also resulting in mechanical obstruction of the distal intestine

Nefrectomia parcial laparoscópica em ratos : técnica e efeitos morfológicos utilizando-se bisturi elétrico e bisturi harmônico /

Orientador: Sérgio Ossamu IoshiiInclui apęndiceTese (doutorado) - Universidade Federal do Paraná, Setor de Cięncias da Saúde, Programa de Pós-Graduaçăo em Clínica Cirúrgica. Defesa: Curitiba, 2003Inclui bibliografia e anexo

Estudo histologico de rins de ratos perfundidos com solução salina isotonica, solução de Euro-Collins e solução de Euro-Collins adicionada de diltiazem e preservados por ate 48 horas

Orientador : Luiz Fernando Bleggi TorresCo-orientador : Renato Tambara FilhoDissertação (mestrado) - Universidade Federal do Parana, Setor de Ciencias da SaudeResumo: O objetivo do presente estudo foi analisar as alterações histológicas de rins de ratos perfundidos com solução salina isotônica, solução de Euro-Collins e solução de Euro-Collins adicionada de diltiazem e preservados sob hipotermia simples por até 48 horas. Foram utilizados 36 ratos Wistar Novergicus albinus, fêmeas, divididos em três grupos, com doze ratos cada: grupo A (rins perfundidos com solução salina isotônica), grupo B (rins perfundidos com solução de Euro- Collins) e grupo C (rins perfundidos com solução de Euro-Collins adicionada de diltiazem). Utilizou-se anestesia inalatória com éter comercial em todos os procedimentos cirúrgicos. Os ratos foram submetidos à laparotomia mediana e exposição da aorta abdominal. Por meio de cateter locado no interior da aorta abdominal, foi realizada perfusão renal utilizando-se a solução de acordo com o grupo a que pertencia o animal. Após o término da perfusão, foi realizada nefrectomia bilateral e os órgãos foram preservados sob hipotermia por cinco períodos de tempo distintos: 0, 12, 24, 36 e 48 horas. Os rins foram fixados em formol a 10% para análise histológica. Por meio de microscopia óptica foram avaliadas duas estruturas renais: glomérulo e túbulo. Contou-se o número total de glomérulos e o percentual de glomérulos lesados, e avaliou-se o grau de dano tubular. Não houve diferença significativa do número de glomérulos avaliados entre os diferentes períodos de tempo em cada grupo. Não se observou lesão glomerular e dano tubular em nenhum dos órgãos dos grupos A, B e C no período 0. A perfusão renal com solução salina isotônica mostrou-se efetiva na preservação dos órgãos por até 12 horas, verificando-se aumento do percentual de glomérulos lesados nos períodos de 24, 36 e 48 horas. A perfusão renal com solução de Euro-Collins e com solução de Euro-Collins adicionada de diltiazem mostraram-se igualmente efetivas na preservação dos órgãos por até 36 horas, observando-se aumento do percentual de glomérulos lesados somente no período de 48 horas. Os resultados demonstraram existir associação entre dano tubular e o grau de lesão glomerular, ou seja, os rins com maior grau de alteração tubular correlacionaram-se com lesão glomerular severa. Concluiu-se que a adição do bloqueador de canal de cálcio, diltiazem, à solução de Euro-Collins para a perfusão renal não diminui o percentual de lesão glomerular.Abstract: The aim of this study was to analyse the histologic changes of rat kidneys perfused with isotonic saline solution, Euro-Collins solution and Euro-Collins solution added with diltiazem and stored hypothermically up to 48 hours. Thirty-six female Wistar Novergicus albinus rats were used, divided in three groups of twelve rats each, as follow group A (kidneys perfused with isotonic saline solution), group B (kidneys perfused with Euro-Collins solution) and group C (kidneys perfused with Euro-Collins solution added with diltiazem). Ether anesthesia was used for all surgical procedures. The rats were submitted to laparotomy and abdominal aorta exposure. Through a catheter located in the interior of the abdominal aorta, a renal perfusion was performed using a solution according to the group to which the animal belonged. After the perfusion completion, bilateral nephrectomy was performed and the organs were preserved under hypothermia for five distinct periods of time: 0, 12, 24, 36 and 48 hours. The kidneys were fixed in formaldehyde at 10% for histological analysis. Two renal structures were evaluated through optical microscopy: glomerulus and tubule. The total number of glomeruli was counted, the percentage of the injured glomeruli established and the injured tubular degree evaluated. There was no meaningful difference in the number of glomeruli evaluated between the different periods of time in each group. Glomerular lesion and tubular injury were not observed in any of the organs in groups A, B and C in period 0. The renal perfusion with isotonic saline solution proved effective in the preservation of the organs up to 12 hours, an increase in the percentage of the injured glomeruli was noticed in the periods of 24, 36 and 48 hours. The renal perfusion with Euro-Collins solution and Euro-Collins solution added with diltiazem proved effective in the preservation of the organs up to 36 hours and an increase in the percentage of injured glomeruli was noticed only in the period of 48 hours. The results showed an association between the tubular injury and the glomeruli lesion degree, that is, the kidneys with a higher degree of tubular alteration were related to severe glomerular lesion. It was therefore concluded that the addition of a calcium channel blocker, diltiazem, to the Euro- Collins solution for the renal perfusion does not decrease the percentage of glomerular lesion