Band-gap solitons in nonlinear optically-induced lattices

We introduce novel optical solitons that consist of a periodic and a spatially localized components coupled nonlinearly via cross-phase modulation. The spatially localized optical field can be treated as a gap soliton supported by the optically-induced nonlinear grating. We find different types of these band-gap composite solitons and demonstrate their dynamical stability.Comment: 4 pages, 5 figure

Nonlinear Bloch modes in two-dimensional photonic lattices

We generate experimentally different types of two-dimensional Bloch waves of a square photonic lattice by employing the phase imprinting technique. We probe the local dispersion of the Bloch modes in the photonic lattice by analyzing the linear diffraction of beams associated with the high-symmetry points of the Brillouin zone, and also distinguish the regimes of normal, anomalous, and anisotropic diffraction through observations of nonlinear self-action effects.Comment: 11 pages, 8 figure

KEANEKARAGAMAN SERANGGA DALAM KAWASAN HUTAN MANGROVE DI DESA IHAMAHU

The research was carried out in the mangrove forest area of Ihamahu Village in September 2020. The study aimed to determine the distribution and level of insect diversity and the factors that influence insect diversity in the mangrove forest area. The study was carried out in an area of 500 m using the path method for insect inventory and systematic sampling for vegetation inventory with a width of 20 m and a length of 100 m with a distance between lanes of 20 m. Insect retrieval using exploratory methods using hands (hand collecting), pitfall traps, and bait traps. The results of the study found 73 insects consisting of 5 orders, 5 families with 9 species of insects, and 4 types of mangroves. The insect diversity index value is 2.1 which is classified as moderate, the abundance index value is 0.018 and the dominance index value is 0.124 which is classified as low. Factors thought to influence insect diversity are the microclimate and the availability of mangroves as a food source.Keywords: Diversity, forest, Ihamahu, insects, mangrove.AbstrakPenelitian dilaksanakan dalam kawasan hutan mangrove Desa Ihamahu pada bulan September 2020. Penelitian bertujuan untuk mengetahui penyebaran dan tingkat keanekaragaman serangga serta faktor-faktor yang mempengaruhi keanekaragaman serangga yang berada dalam kawasan hutan mangrove. Penelitian dilaksanakan pada areal seluas 500 m menggunakan metode jalur untuk inventarisasi serangga dan sistematik sampling untuk inventarisasi vegetasi dengan lebar 20 m dan panjang 100 m dengan jarak antar jalur yaitu 20 m. Pengambilan serangga menggunakan metode eksplorasi dengan menggunakan tangan (hand collecting), perangkap sumuran (pit fall trap), dan perangkap umpan (bait trap). Hasil penelitian menemukan 73 ekor serangga terdiri dari 5 ordo, 5 family dengan jumlah jenis serangga 9 jenis dengan 4 jenis mangrove. Nilai indeks keanekaragaman serangga sebesar 2.1 yang tergolong sedang, nilai indeks kelimpahan sebesar 0.018 dan nilai indeks dominansi 0.124 yang tergolong rendah. Faktor-faktor yang diduga mempengaruhi keanekaragaman serangga yakni iklim mikro dan ketersediaan mangrove sebagai sumber makanan. Kata kunci: Hutan, Ihamahu, keanekaragaman, mangrove, serangga

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1.5 minutes of madness: Kurzvorstellung des Posters zu JuSE

Comparison of the VetGate and SurgiGATE 1.0 computer assisted surgery systems for insertion of cortex screws across the distal phalanx in horses – an in vitro study

The In vitro experimental study on five cadaveric equine limb pairs (n=10) was conducted to evaluate the functionality and precision of the VetGate Computer Assisted Surgery (CAS) system during insertion of two 4.5mm cortex screws across virtual midsagittal fractures of the distal phalanx (P3) in the horse and to compare the results with those achieved with the SurgiGate 1.0 CAS-System in a similar study. In each specimen wo 4.5mm cortex screws were inserted computer assisted in lag fashion facilitated by the VetGate CASSystem. In none of the specimens did screw penetration of the articular- or solar surface or the semilunar canal, occur. The difference between optimal and actual screw length is significantly better in this study compared to a similar study conducted with the SurgiGATE 1.0 CAS-System. The results achieved with the VetGate CAS-System are even more precise than with the SurgiGATE 1.0 CAS-System (p<0.001). The VetGate CAS-System allows exact screw placement at delicate locations

Reduced-symmetry two-dimensional solitons in photonic lattices

We demonstrate theoretically and experimentally a novel type of localized beams supported by the combined effects of total internal and Bragg reflection in nonlinear two-dimensional square periodic structures. Such localized states exhibit strong anisotropy in their mobility properties, being highly mobile in one direction and trapped in the other, making them promising candidates for optical routing in nonlinear lattices.Comment: 5 pages, 4 figure

The TANAMI Program

TANAMI (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry) is a monitoring program to study the parsec-scale structures and dynamics of relativistic jets in active galactic nuclei (AGN) of the Southern Hemisphere with the Long Baseline Array and associated telescopes. Extragalactic jets south of -30 degrees declination are observed at 8.4 GHz and 22 GHz every two months at milliarcsecond resolution. The initial TANAMI sample is a hybrid radio and gamma-ray selected sample since the combination of VLBI and gamma-ray observations is crucial to understand the broadband emission characteristics of AGN.Comment: Confernce Proceedings for "X-ray Astronomy 2009" (Bologna), 3 pages, 3 figures, needs cls-fil

Cancer Informatics for Cancer Centers (CI4CC): Building a Community Focused on Sharing Ideas and Best Practices to Improve Cancer Care and Patient Outcomes.

Cancer Informatics for Cancer Centers (CI4CC) is a grassroots, nonprofit 501c3 organization intended to provide a focused national forum for engagement of senior cancer informatics leaders, primarily aimed at academic cancer centers anywhere in the world but with a special emphasis on the 70 National Cancer Institute-funded cancer centers. Although each of the participating cancer centers is structured differently, and leaders' titles vary, we know firsthand there are similarities in both the issues we face and the solutions we achieve. As a consortium, we have initiated a dedicated listserv, an open-initiatives program, and targeted biannual face-to-face meetings. These meetings are a place to review our priorities and initiatives, providing a forum for discussion of the strategic and pragmatic issues we, as informatics leaders, individually face at our respective institutions and cancer centers. Here we provide a brief history of the CI4CC organization and meeting highlights from the latest CI4CC meeting that took place in Napa, California from October 14-16, 2019. The focus of this meeting was "intersections between informatics, data science, and population science." We conclude with a discussion on "hot topics" on the horizon for cancer informatics