Design of a high contrast grating GaSb-based VCSEL integrated on silicon-on-insulator

We present a GaSb-VCSEL concept using SOI-based HCGs as highly reflective mirrors. The optical properties of two different grating designs are simulated using RCWA. These gratings show strong and broadband reflection around 2.3 mu m

Photonic crystal nanobeam cavities with optical resonances around 800 nm

We report on the design and the fabrication of 1D photonic crystal (PhC) nanobeam cavities with optical resonances around 800 nm, compatible with Rubidium, Cesium or Argon atomic transitions. The cavities are made of Indium Gallium Phosphide (InGaP) material, a III-V semi-conductor compound which has a large index of refraction ($n \simeq 3.3$) favoring strong optical confinement and small mode volumes. Nanobeam cavities with inline and side coupling have been designed and fabricated, and quality factors up to $2\times 10^4$ have been measured

KSU Chorale, Women\u27s Choir, and Northwestern Middle School 8th Grade Chorus

Kennesaw State University School of Music presents KSU Chorale, Women\u27s Choir, and Northwestern Middle School 8th Grade Chorus.https://digitalcommons.kennesaw.edu/musicprograms/1154/thumbnail.jp

III-V-on-silicon photonic devices for optical communication and sensing

In the paper, we review our work on heterogeneous III-V-on-silicon photonic components and circuits for applications in optical communication and sensing. We elaborate on the integration strategy and describe a broad range of devices realized on this platform covering a wavelength range from 850 nm to 3.85 μm

Strain-Tuning of the Optical Properties of Semiconductor Nanomaterials by Integration onto Piezoelectric Actuators

The tailoring of the physical properties of semiconductor nanomaterials by strain has been gaining increasing attention over the last years for a wide range of applications such as electronics, optoelectronics and photonics. The ability to introduce deliberate strain fields with controlled magnitude and in a reversible manner is essential for fundamental studies of novel materials and may lead to the realization of advanced multi-functional devices. A prominent approach consists in the integration of active nanomaterials, in thin epitaxial films or embedded within carrier nanomembranes, onto Pb(Mg1/3Nb2/3)O3-PbTiO3-based piezoelectric actuators, which convert electrical signals into mechanical deformation (strain). In this review, we mainly focus on recent advances in strain-tunable properties of self-assembled InAs quantum dots embedded in semiconductor nanomembranes and photonic structures. Additionally, recent works on other nanomaterials like rare-earth and metal-ion doped thin films, graphene and MoS2 or WSe2 semiconductor two-dimensional materials are also reviewed. For the sake of completeness, a comprehensive comparison between different procedures employed throughout the literature to fabricate such hybrid piezoelectric-semiconductor devices is presented. Very recently, a novel class of micro-machined piezoelectric actuators have been demonstrated for a full control of in-plane stress fields in nanomembranes, which enables producing energy-tunable sources of polarization-entangled photons in arbitrary quantum dots. Future research directions and prospects are discussed.Comment: review manuscript, 78 pages, 27 figure

La imagen y la narrativa como herramientas para el abordaje psicosocial en escenarios de violencia. Departamento de Huila y Caquetá

El presente trabajo tiene como finalidad dar a conocer los abordajes de contextos desde los enfoques narrativos y el acompañamiento psicosocial en escenarios de violencia de los Departamentos del Huila y Caquetá, desde luego por medio del Relato 1- Modesto Pacayá, donde se abordan situaciones problemas de vulnerabilidad de derechos, desplazamiento forzado, reclutamiento, pobreza extrema, pero a la vez también se aborda el sentir y/o tejer de la resiliencia frente a los hechos victimizantes. En este objeto de estudio y análisis argumentativo y reflexivo del caso de Peñas Coloradas, se busca coadyuvar a mitigar la situación problema, desde al acompañamiento psicosocial como lo son la implementación de tres (3) estrategias psicosociales enfocadas a proteger la integridad de las víctimas a causa del hostigamiento militar, se busca empoderar a las víctimas y a la vez identificar redes de apoyo que promuevan un desarrollo individual y colectivo a la comunidad de Peñas Coloradas. Para simplificar en el abordaje del caso, se identifica como el hostigamiento militar genero daños psicológicos y materiales a la comunidad de Peñas Coloradas, así como también se evidencia como las entidades gubernamentales como la Cruz Roja, la Defensoría del Pueblo, el Personero del Municipio, y demás entes de control; no apoyaron a esta comunidad, si no que al contrario arrebataron sus vidas estigmatizándolos como guerrilleros. De modo que, el estado se preocupó más por presentar falsos positivos, que por proteger las vidas de la comunidad. En concreto esa es la situación problema de las víctimas, que tras de sufrir traumas y vulnerabilidad, deben de sometersen a la estigmatización de la sociedad, y sin apoyo de entes gubernamentales buscan sobrevivir en el país, e incluso otros deben de salir de su país natal, en busca de mejores condiciones de vida. Resumiendo todo lo anterior, las victimas del caso abordado tuvieron que huir y llegar a un lugar desconocido, donde las oportunidades laborales, y sociales eran precarias, pero sin otra salida tuvieron que afrontarlas, con la esperanza de algún día poder volver a su centro poblado de donde se vieron obligados a salir, pero sin razón alguna han sido burlados y cada vez más, aumentan el tiempo para no dejarlos entrar a Peñas Coloradas.The purpose of this work is to present the approaches to contexts from narrative approaches and psychosocial support in scenes of violence in the Departments of Huila and Caquetá, of course through Story 1- Modesto Pacayá, where situations of problems of vulnerability of rights, forced displacement, recruitment, extreme poverty, but at the same time it also addresses the feeling and / or weaving of resilience in the face of victimizing events. In this object of study and argumentative and reflective analysis of the case of Peñas Coloradas, it seeks to help mitigate the problem situation, from psychosocial support such as the implementation of three (3) psychosocial strategies focused on protecting the integrity of the victims to Because of the military harassment, it seeks to empower the victims and at the same time identify support networks that promote individual and collective development in the community of Peñas Coloradas. To simplify the approach to the case, it is identified how the military harassment generated psychological and material damage to the community of Peñas Coloradas, as well as it is evidenced as government entities such as the Red Cross, the Ombudsman's Office, the Municipal Representative, and other control entities; They did not support this community, but on the contrary took their lives stigmatizing them as guerrillas. So the state was more concerned with presenting false positives than protecting the lives of the community. Specifically, that is the problem situation of the victims, who after suffering trauma and vulnerability, must be subjected to the stigmatization of society, and without the support of government entities they seek to survive in the country, and even others must leave their country native, in search of better living conditions. Summarizing all of the above, the victims of the case addressed had to flee and reach an unknown place, where job and social opportunities were precarious, but without any other way out they had to face them, with the hope of one day being able to return to their populated center. from where they were forced to leave, but for no reason they have been mocked and more and more, they increase the time to not let them enter Peñas Coloradas

KSU Choral Ensembles present Messiah with KSU Symphony Orchestra

Kennesaw State University Choral Ensembles present Messiah by George Frideric Handel with KSU Symphony Orchestra.https://digitalcommons.kennesaw.edu/musicprograms/1123/thumbnail.jp

Meta-analysis of genome-wide association studies for cattle stature identifies common genes that regulate body size in mammals

peer-reviewedH.D.D., A.J.C., P.J.B. and B.J.H. would like to acknowledge the Dairy Futures Cooperative Research Centre for funding. H.P. and R.F. acknowledge funding from the German Federal Ministry of Education and Research (BMBF) within the AgroClustEr ‘Synbreed—Synergistic Plant and Animal Breeding’ (grant 0315527B). H.P., R.F., R.E. and K.-U.G. acknowledge the Arbeitsgemeinschaft Süddeutscher Rinderzüchter, the Arbeitsgemeinschaft Österreichischer Fleckviehzüchter and ZuchtData EDV Dienstleistungen for providing genotype data. A. Bagnato acknowledges the European Union (EU) Collaborative Project LowInputBreeds (grant agreement 222623) for providing Brown Swiss genotypes. Braunvieh Schweiz is acknowledged for providing Brown Swiss phenotypes. H.P. and R.F. acknowledge the German Holstein Association (DHV) and the Confederación de Asociaciones de Frisona Española (CONCAFE) for sharing genotype data. H.P. was financially supported by a postdoctoral fellowship from the Deutsche Forschungsgemeinschaft (DFG) (grant PA 2789/1-1). D.B. and D.C.P. acknowledge funding from the Research Stimulus Fund (11/S/112) and Science Foundation Ireland (14/IA/2576). M.S. and F.S.S. acknowledge the Canadian Dairy Network (CDN) for providing the Holstein genotypes. P.S. acknowledges funding from the Genome Canada project entitled ‘Whole Genome Selection through Genome Wide Imputation in Beef Cattle’ and acknowledges WestGrid and Compute/Calcul Canada for providing computing resources. J.F.T. was supported by the National Institute of Food and Agriculture, US Department of Agriculture, under awards 2013-68004-20364 and 2015-67015-23183. A. Bagnato, F.P., M.D. and J.W. acknowledge EU Collaborative Project Quantomics (grant 516 agreement 222664) for providing Brown Swiss and Finnish Ayrshire sequences and genotypes. A.C.B. and R.F.V. acknowledge funding from the public–private partnership ‘Breed4Food’ (code BO-22.04-011- 001-ASG-LR) and EU FP7 IRSES SEQSEL (grant 317697). A.C.B. and R.F.V. acknowledge CRV (Arnhem, the Netherlands) for providing data on Dutch and New Zealand Holstein and Jersey bulls.Stature is affected by many polymorphisms of small effect in humans1. In contrast, variation in dogs, even within breeds, has been suggested to be largely due to variants in a small number of genes2,3. Here we use data from cattle to compare the genetic architecture of stature to those in humans and dogs. We conducted a meta-analysis for stature using 58,265 cattle from 17 populations with 25.4 million imputed whole-genome sequence variants. Results showed that the genetic architecture of stature in cattle is similar to that in humans, as the lead variants in 163 significantly associated genomic regions (P < 5 × 10−8) explained at most 13.8% of the phenotypic variance. Most of these variants were noncoding, including variants that were also expression quantitative trait loci (eQTLs) and in ChIP–seq peaks. There was significant overlap in loci for stature with humans and dogs, suggesting that a set of common genes regulates body size in mammals

Long-wavelength silicon photonic integrated circuits

status: publishe

Why Are Outcomes Different for Registry Patients Enrolled Prospectively and Retrospectively? Insights from the Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF).

Background: Retrospective and prospective observational studies are designed to reflect real-world evidence on clinical practice, but can yield conflicting results. The GARFIELD-AF Registry includes both methods of enrolment and allows analysis of differences in patient characteristics and outcomes that may result. Methods and Results: Patients with atrial fibrillation (AF) and ≥1 risk factor for stroke at diagnosis of AF were recruited either retrospectively (n = 5069) or prospectively (n = 5501) from 19 countries and then followed prospectively. The retrospectively enrolled cohort comprised patients with established AF (for a least 6, and up to 24 months before enrolment), who were identified retrospectively (and baseline and partial follow-up data were collected from the emedical records) and then followed prospectively between 0-18 months (such that the total time of follow-up was 24 months; data collection Dec-2009 and Oct-2010). In the prospectively enrolled cohort, patients with newly diagnosed AF (≤6 weeks after diagnosis) were recruited between Mar-2010 and Oct-2011 and were followed for 24 months after enrolment. Differences between the cohorts were observed in clinical characteristics, including type of AF, stroke prevention strategies, and event rates. More patients in the retrospectively identified cohort received vitamin K antagonists (62.1% vs. 53.2%) and fewer received non-vitamin K oral anticoagulants (1.8% vs . 4.2%). All-cause mortality rates per 100 person-years during the prospective follow-up (starting the first study visit up to 1 year) were significantly lower in the retrospective than prospectively identified cohort (3.04 [95% CI 2.51 to 3.67] vs . 4.05 [95% CI 3.53 to 4.63]; p = 0.016). Conclusions: Interpretations of data from registries that aim to evaluate the characteristics and outcomes of patients with AF must take account of differences in registry design and the impact of recall bias and survivorship bias that is incurred with retrospective enrolment. Clinical Trial Registration: - URL: http://www.clinicaltrials.gov . Unique identifier for GARFIELD-AF (NCT01090362)