22,388 research outputs found

    Performance analysis with network-enhanced complexities: On fading measurements, event-triggered mechanisms, and cyber attacks

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    Copyright © 2014 Derui Ding et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Nowadays, the real-world systems are usually subject to various complexities such as parameter uncertainties, time-delays, and nonlinear disturbances. For networked systems, especially large-scale systems such as multiagent systems and systems over sensor networks, the complexities are inevitably enhanced in terms of their degrees or intensities because of the usage of the communication networks. Therefore, it would be interesting to (1) examine how this kind of network-enhanced complexities affects the control or filtering performance; and (2) develop some suitable approaches for controller/filter design problems. In this paper, we aim to survey some recent advances on the performance analysis and synthesis with three sorts of fashionable network-enhanced complexities, namely, fading measurements, event-triggered mechanisms, and attack behaviors of adversaries. First, these three kinds of complexities are introduced in detail according to their engineering backgrounds, dynamical characteristic, and modelling techniques. Then, the developments of the performance analysis and synthesis issues for various networked systems are systematically reviewed. Furthermore, some challenges are illustrated by using a thorough literature review and some possible future research directions are highlighted.This work was supported in part by the National Natural Science Foundation of China under Grants 61134009, 61329301, 61203139, 61374127, and 61374010, the Royal Society of the UK, and the Alexander von Humboldt Foundation of Germany

    Corrections to Tribimaximal Mixing from Nondegenerate Phases

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    We propose a seesaw scenario that possible corrections to the tribimaximal pattern of lepton mixing are due to the small phase splitting of the right-handed neutrino mass matrix. we show that the small deviations can be expressed analytically in terms of two splitting parameters(δ1\delta_1 and δ2\delta_2) in the leading order. The solar mixing angle θ12\theta_{12} favors a relatively smaller value compared to zero order value (35.335.3^\circ), and the Dirac type CP phase δ\delta chooses a nearly maximal one. The two Majorana type CP phases ρ\rho and σ\sigma turn out to be a nearly linear dependence. Also a normal hierarchy neutrino mass spectrum is favored due to the stability of perturbation calculations.Comment: 19 pages 6 figures, Accepted by Mod. Phy. Lett.

    A point symmetry based method for transforming ODEs with three-dimensional symmetry algebras to their canonical forms

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    We provide an algorithmic approach to the construction of point transformations for scalar ordinary differential equations that admit three-dimensional symmetry algebras which lead to their respective canonical forms

    PEMERIKSAAN JUMLAH SEL LEUKOSIT PADA PENDERITA TUBERKULOSIS PARU DI UPT KESEHATAN PARU MASYARAKAT DINAS KESEHATAN PROVINSI SUMATERA UTARA

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    Tuberkulosis paru atau sering disebut TB paru merupakan suatu penyakit infeksi paru yang disebabkan oleh kuman mycobacterium tuberculosis yang ditularkan melalui udara. Salah satu pemeriksaan penunjang pada penderita TB paru adalah pemeriksaan jumlah sel Lekosit. Lekosit berfungsi dalam memerangi infeksi yang disebabkan oleh virus, bakteri, ataupun proses metabolik toksin. Pada penderita TB paru ditemukan sedikit peningkatan jumlah sel Lekosit yang disebut dengan istilah Leukositosis. Tujuan peneltiian ini untuk mengetahui jumlah sel Lekosit pada penderita Tuberkulosis paru di UPT Kesehatan Paru Masyarakat Dinas Kesehatan Provinsi Sumatera Utara. Disain penelitian bersifat deskriftif cross sectional. Penulis ingin melakukan pemeriksaan jumlah sel Lekosit dengan menggunakan alat Auto Hematology Analyzer Mindray BC-300 Plus dengan sampel sebanyak 50 orang, bahan yang digunakan adalah darah dengan antikoagulan EDTA. Penelitian dilakukan di laboratorium UPT Kesehatan Paru Masyarakat Dinas Kesehatan Provinsi Sumatera Utara. Dari hasil penelitian diperoleh Lekosit yang normal sebanyak 30 orang (60%), meningkat sebanyak 20 orang (40%)

    PEMERIKSAAN JUMLAH SEL LEUKOSIT PADA PENDERITA TUBERKULOSIS PARU DI UPT KESEHATAN PARU MASYARAKAT DINAS KESEHATAN PROVINSI SUMATERA UTARA

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    Tuberkulosis paru atau sering disebut TB paru merupakan suatu penyakit infeksi paru yang disebabkan oleh kuman mycobacterium tuberculosis yang ditularkan melalui udara. Salah satu pemeriksaan penunjang pada penderita TB paru adalah pemeriksaan jumlah sel Lekosit. Lekosit berfungsi dalam memerangi infeksi yang disebabkan oleh virus, bakteri, ataupun proses metabolik toksin. Pada penderita TB paru ditemukan sedikit peningkatan jumlah sel Lekosit yang disebut dengan istilah Leukositosis. Tujuan peneltiian ini untuk mengetahui jumlah sel Lekosit pada penderita Tuberkulosis paru di UPT Kesehatan Paru Masyarakat Dinas Kesehatan Provinsi Sumatera Utara. Disain penelitian bersifat deskriftif cross sectional. Penulis ingin melakukan pemeriksaan jumlah sel Lekosit dengan menggunakan alat Auto Hematology Analyzer Mindray BC-300 Plus dengan sampel sebanyak 50 orang, bahan yang digunakan adalah darah dengan antikoagulan EDTA. Penelitian dilakukan di laboratorium UPT Kesehatan Paru Masyarakat Dinas Kesehatan Provinsi Sumatera Utara. Dari hasil penelitian diperoleh Lekosit yang normal sebanyak 30 orang (60%), meningkat sebanyak 20 orang (40%)

    A comparative Study of Sorting Algorithms Comb, Cocktail and Counting Sorting

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    The sorting algorithms problem is probably one of the most famous problems that used in abroad variety of application. There are many techniques to solve the sorting problem. In this paper, we conduct a comparative study to evaluate the performance of three algorithms; comb, cocktail and count sorting algorithms in terms of execution time. Java programing is used to implement the algorithms using numeric data on the same platform conditions. Among the three algorithms, we found out that the cocktail algorithm has the shortest execution time; while counting sort comes in the second order. Furthermore, Comb comes in the last order in term of execution time. Future effort will investigate the memory space complexity

    Perangkap Kemiskinan pada Warga Relokasi (Studi Korelasional: Unsur-unsur Perangkap Kemiskinan pada Warga Relokasi Pucang Mojo Kedungtungkul Mojosongo Jebres Surakarta)

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    This study is the result of the interpretation of the theory of "Poverty Trap" Robert Chambers (1983) to the social facts paradigm (Emile Dhurkheim, 1964). The purpose of this study was to determine whether or not the resident relocation poverty trap, by way of explaining whether or not the relationship between the elements of the poverty trap in this case: powerlessness, vulnerability, physical weakness, material poverty, and isolation of the Public Service, the citizens relocation Pucang Mojo, Kedungtungkul, Mojosongo, Surakarta. This study uses poverty approach both structurally and culturally. This research is survey research with an explanatory strategy. The study population was all heads of households in Housing Relocation Pucang mojo, Mojosongo, Surakarta.The number of sample was taken 50% out of total population. This study employed quantitative data with triangulation using qualitative data as the confirmer. The qualitative data used was the one derived from result of interview and observation. To examine the relationship between the elements of poverty trap, Product Moment Correlation test was used that was processed with SPSS 19.0 version IBM. The dominant result of statistic data processing in this study was then combined with qualitative data in the discussion. The result of discussion showed that: out of ten relationships between variables or elements existing, only four categorized into significant relationship, while the other six elements were proved insignificant. The four elements are shown to have a significant association among others: the poverty of material with physical weakness, material poverty with vulnerability, physical weakness with vulnerability, and isolation of the public service with the helplessness while the sixth has no correlation relationships such as: poverty with insulating material to public servants, the material poverty with powerlessness, physical weakness with insulation against public servants, physical weakness with powerlessness, isolation against public servants with vulnerability, and vulnerability to helplessness. This finding showed that not all hypotheses suggested by Robert Chambers (1983) could be proved in the context of urban poverty, particularly among the relocated people in Pucangmojo, Kedungtungkul, Mojosongo, Jebres, Surakarta

    Characteristics of Mineral Oil-based Nanofluids for Power Transformer Application

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    Trends in the field of nanomaterial-based transformer oil show most of the conducted works have focused only on the transformer oil-based nanofluids but limited studies on the stability of transformer oil-based nanofluids. Since mineral oil-based nanofluids still can produce the sedimentation, thus the cold-atmospheric pressure plasma method is proposed to functionally modify the Silicon Dioxide (SiO2) nanofiller in order to enhance the electrical properties of the mineral oil-based nanofluids. The AC breakdown strength oil samples before and after modification were measured. It was found that the plasma treated nanofluids have higher AC breakdown voltage compared to pure oil and untreated nanofluids. Also, Fourier Transform Infrared (FTIR) Spectroscopy has been used in this study to analyse the physical changes of oil samples. It is envisaged that the added silica nanofiller has significant effect on electrical properties of the transformer oil-based nanofluids which would enable to the development of an improved class of liquid dielectric for the application of power transformer

    Management of head injury patients in a General Intensive Care Unit (GICU) with no neurosurgical service

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    Our hospital is a referral hospital for a region having a population of 1.8 million and incidents of motor-vehicle accidents of about 11700 per year. HI patients are managed by the general surgeons who had neurosurgical experience of a variable experience who are in change of the General Intensive Care Unit (GICU
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