2,623 research outputs found

    Seed selection for information cascade in multilayer networks

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    Information spreading is an interesting field in the domain of online social media. In this work, we are investigating how well different seed selection strategies affect the spreading processes simulated using independent cascade model on eighteen multilayer social networks. Fifteen networks are built based on the user interaction data extracted from Facebook public pages and tree of them are multilayer networks downloaded from public repository (two of them being Twitter networks). The results indicate that various state of the art seed selection strategies for single-layer networks like K-Shell or VoteRank do not perform so well on multilayer networks and are outperformed by Degree Centrality

    High-precision calculations of In I and Sn II atomic properties

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    We use all-order relativistic many-body perturbation theory to study 5s^2 nl configurations of In I and Sn II. Energies, E1-amplitudes, and hyperfine constants are calculated using all-order method, which accounts for single and double excitations of the Dirac-Fock wave functions.Comment: 10 pages, accepted to PRA; v2: Introduction changed, references adde

    Interoperability and Reliability of Multiplatform MPLS VPN: Comparison of Traffic Engineering with RSVP-TE Protocol and LDP Protocol

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    One of the alternatives to overcome network scalability problem and maintaining reliability is using MPLS VPN network. In reallity, the current network is already using a multiplatform of several different hardware vendors, i.e., Cisco and Juniper platforms. This paper discusses the comparison of the simulation results to see interoperability of multiplatform MPLS VPN andreliability through traffic engineering using RSVP-TE and LDP protocols. Both the RSVP and LDP protocols are tested on a stable network and in a recovery mode,as well as non-load conditions and with additional traffic load. The recovery mode is the condition after the failover due to termination of one of the links in the network. The no-load condition means that the network is not filled with additional traffic. There is only traffic from the measurement activity itself. While network conditions with an additional load are conditions where there is an additional UDP packet traffic load of 4.5 Mbps in addition to the measurement load itself. On a stable network and without additional traffic load, the average delay on LDP protocol is 59.41 ms, 2.06 ms jitter, 0.08% packetloss, and 8.99 Mbps throughput. Meanwhile, on RSVP protocol, the average delay is 52.40 ms, 2.39 ms jitter, 12.18% packet loss, and 7.80 Mbps throughput. When failover occurs and on recovery mode, LDP protocol is48% of packet loss per 100 sent packets while on RSVP packet loss percentage is 35.5% per 100 sent packets. Both protocols have interoperability on the third layer of multiplatform MPLS VPN, but on heavy loaded traffic condition, RSVP protocol has better reliability than the LDP protocol

    Peningkatan Ketebalan Serat Elastin Dinding Vagina Pada Prolapsus Organ Pelvis Anterior

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    Tujuan: Mengukur ketebalan serat elastin pada dinding vagina penderita POP anterior dan menganalisis korelasi antara ketebalan serat elastin dengan derajat POP anterior.Bahan dan Metode: Penelitian ini merupakan penelitian analitik observasional secara cross sectional yang dilakukan pada 28 blok paraffin dinding vagina dari penderita POP anterior yang telah dilakukan operasi di RSUD dr. Soetomo Surabaya. Dibagi menjadi 4 kelompok: derajat 0/I, II, III dan IV dengan masing-masing (n=7). Dilakukan pewarnaan imunohistokimia dengan antibodi elastin dilanjutkan pengukuran ketebalan serat elastin menggunakan mikroskop dengan perangkat lunak Leica Application Suite (LAS).Hasil: Didapatkan perbedaan bermakna rerata ketebalan serat elastin kelompok penderita POP anterior derajat 0/I, II, III dan IV yaitu masing-masing sebesar 0,81 + 0,14 µm; 1,63 + 0,19 µm; 2,47 + 0,26µm dan 3,19 + 0,36 µm (p<0,0001). Berdasarkan hasil uji statistik korelasi pearson didapatkan koefisien korelasi r = 0,965 (P<0,0001).Simpulan: Ketebalan serat elastin pada dinding vagina bertambah dengan meningkatnya derajat POP anterior. Peningkatan ketebalan serat elastin merupakan akibat proses remodeling matriks ekstraseluler pada dinding vagina penderita POP anterior

    Effect of feeding broiler chicken on soybean oil and palm oil supplemented with some feed additives on the quality characteristics of processed chicken nuggets

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    The objective of this study was to investigate the effect of feeding broiler chicken on different vegetable oils with feed additives on the quality characteristics of chicken nuggets. A total of 216 one-day-old chicks of (Hubbard) strain were randomly assigned to six dietary treatments as (2×3) factorial designs where two sources of dietary oil contained soybean oil and palm oil with three levels of commercial multi-enzyme feed additives. Treatments were: soybean oil only (T1), soybean oil+ ZAD (T2), soybean oil+ AmPhi-BACT (T3), palm oil only (T4), palm oil + ZAD (T5) and palm oil + AmPhi- BACT (T6). Results showed that chicken nuggetsof T3 group had the higher pH value. No significant differences were found in cooking loss between (T1, T5 andT6) and nuggets of T3and T4. Nugget of T2 group had the higher T.B.A value. No significant effect on shrinkage % of nuggets samples

    EXTRACTION, FRACTIONATION AND CHARACTERIZATION OF COWPEA (VIGNA UNGUICULATA) GLOBULINS

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    The proteins were extracted from cowpea seeds by buffered saline solution and the globulins were separated by dialyzing the protein extract against distilled water. Fractionation of the total globulins on Sephacryl S-200 column produced two major and one minor components. The molecular weight of the major globulin components were estimated to be greater than 250000 and 178 000 for the globulin component (a) and (b) respectively and the latter component was the predominant globulin. The two major globulin components were free from contamination of other proteins as shown by polyacrylamide gel electrophoresis. Spectrophotometry and amino acid analyses were used as tools for characterizing the globulin components
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