In-beam spectroscopy of Rn-215(86)

The yrast level structure of Rn-215 has been studied by means of in-beam spectroscopy alpha-gamma-gamma coincidence techniques through the Pb-207(O-18,2 alpha 2n) reaction at 93 MeV bombarding energy, using the 8 pi GASP-ISIS spectrometer at Legnaro. New spectroscopic information has been obtained. The deduced low-lying level scheme of Rn-215 does not exhibit the alternating parity structure observed in the heavier known isotones Fr-216, Ra-217, Ac-218, and Th-219. From this result, the lightest nucleus showing evidence for octupole collectivity is Fr-216, defining the lowest-mass corner for this kind of phenomenon as N >= 129 and Z >= 87.

Poster abstract : Energy-efficient rate adaptive MAC Protocol (RA-MAC) for long-lived sensor networks

This paper introduces an energy-efficient Rate Adaptive MAC (RA-MAC) protocol for long-lived Wireless Sensor Networks (WSN). Previous research shows that the dynamic and lossy nature of wireless communication is one of the major challenges to reliable data delivery in a WSN. RA-MAC achieves high link reliability in such situations by dynamically trading off radio bit rate for signal processing gain. This extra gain reduces the packet loss rate which results in lower energy expenditure by reducing the number of retransmissions. RA-MAC selects the optimal data rate based on channel conditions with the aim of minimizing energy consumption. We have implemented RA-MAC in TinyOS on an off-the-shelf sensor platform (TinyNode), and evaluated its performance by comparing RA-MAC with state-ofthe- art WSN MAC protocol (SCP-MAC) by experiments.

Validation of the Drinking Refusal Self-Efficacy Questionnaire - Revised in an Adolescent Sample (DRSEQ-RA)

Adolescent drinking is a significant issue yet valid psychometric tools designed for this group are scarce. The Drinking Refusal Self-Efficacy Questionnaire—Revised Adolescent Version (DRSEQ-RA) is designed to assess an individual's belief in their ability to resist drinking alcohol. The original DRSEQ-R consists of three factors reflecting social pressure refusal self-efficacy, opportunistic refusal self-efficacy and emotional relief refusal self-efficacy. A large sample of 2020 adolescents aged between 12 and 19 years completed the DRSEQ and measures of alcohol consumption in small groups. Using confirmatory factor analysis, the three factor structure was confirmed. All three factors were negatively correlated with both frequency and volume of alcohol consumption. Drinkers reported lower drinking refusal self-efficacy than non-drinkers. Taken together, these results suggest that the adolescent version of the Drinking Refusal Self-Efficacy Questionnaire (DRSEQ-RA) is a reliable and valid measure of drinking refusal self-efficacy.

Remembering the Peel Island Lazaret through re-imagining the Teerk Roo Ra forest

This paper discusses my current research which aims to re-member the site of the Peel Island Lazaret through re-imagining the Teerk Roo Ra forest as a series of animated artworks. Teerk Roo Ra National Park (formally known as Peel Island) is a small island in Moreton Bay, Queensland and is visible on the ferry journey from Cleveland to Stradbroke Island. The island has an intriguing history, and is the site of a former Lazaret and quarantine station. The Lazaret treated patients diagnosed with Hansen’s disease (or Leprosy), and operated between 1907 and 1959. In this paper I will discuss conceptions of the non-indigenous historical context of the Peel Island Lazaret and the notion of the liminal state (Turner,1967). Through this discussion conceptions of place from Australian cultural theorist Ross Gibson are also examined. The concept of two overlapping realms is then explored through the clues and shared stories about the people who inhabited the site. There is then an explanation of my own approach to re-member this place through re-imagining the forest that witnessed the events of the Lazaret. I then draw on theories of the uncanny from German Psychiatrist Ernst Jentsch, Austrian Neurologist Sigmund Freud and South African animation theorist Meg Rickards to argue that my experience of the forest of Teerk Roo Ra was an uncanny experience where two worlds or states of mind existed simultaneously and overlapped, causing a viscerally unsettling uncanny experience. Through an analysis of Czech Surrealist Animator Jan Švankmajer’s cinematic narrative Down to the cellar (1982), my creative work Structure #24(2011), and Australian Artist Patricia Piccinini’s cinematic artwork The Gathering (2007), I discuss the situation of the inanimate and the animate co-existing simultaneously. Using this approach I propose an understanding of the uncanny as an intellectual uncertainty as outlined by Jentsch (1906). I also develop the notion of the familiar being concealed and becoming unfamiliar through mimicry (Freud, 1919). These discussions form an introduction to my creative work Nocturne #5(2014) which re-members the forests of Teerk Roo Ra as an uncanny place primarily expressed through animation.

Zapys zemelʹnyĭ Na pravo korystovanni︠a︡ zemli︠u︡, shcho znakhoditʹsi︠a︡ v Odeskoï guberni Peryletravenʹsʹkyĭ okruzi Kantakuzenʹsʹy raʹoni pid nazvoi︠u︡ Trudovyshyĭ artilʹ Slava

Digital image

Zapys zemelʹnyĭ Na pravo korystovanni︠a︡ zemli︠u︡, shcho znakhoditʹsi︠a︡ v Odeskoï guberni Peryletravenʹsʹkyĭ okruzi Kantakuzenʹsʹy raʹoni pid nazvoi︠u︡ Trudovyshyĭ artilʹ Slava

Digital image

Plume structure in high-Rayleigh-number convection

Near-wall structures in turbulent natural convection at Rayleigh numbers of $10^{10}$ to $10^{11}$ at A Schmidt number of 602 are visualized by a new method of driving the convection across a fine membrane using concentration differences of sodium chloride. The visualizations show the near-wall flow to consist of sheet plumes. A wide variety of large-scale flow cells, scaling with the cross-section dimension, are observed. Multiple large-scale flow cells are seen at aspect ratio (AR)= 0.65, while only a single circulation cell is detected at AR= 0.435. The cells (or the mean wind) are driven by plumes coming together to form columns of rising lighter fluid. The wind in turn aligns the sheet plumes along the direction of shear. the mean wind direction is seen to change with time. The near-wall dynamics show plumes initiated at points, which elongate to form sheets and then merge. Increase in rayleigh number results in a larger number of closely and regularly spaced plumes. The plume spacings show a common log–normal probability distribution function, independent of the rayleigh number and the aspect ratio. We propose that the near-wall structure is made of laminar natural-convection boundary layers, which become unstable to give rise to sheet plumes, and show that the predictions of a model constructed on this hypothesis match the experiments. Based on these findings, we conclude that in the presence of a mean wind, the local near-wall boundary layers associated with each sheet plume in high-rayleigh-number turbulent natural convection are likely to be laminar mixed convection type.

Carbon onions: Carriers of the 217.5 nm interstellar absorption feature

The UV-VIS characteristics of carbon ions fabricated by an arch discharge in water or liquid nitrogen show characteristics that are similar to the interstellar absorption feature. Thus, high purity and well separated carbon onion samples prepared by annealing the as-fabricated powder in air at 600°C for 60 showed a constant absorption peak at 4.6 μm-1 with a variable width ranging from 1.2-1.6 μm-1. In addition to the UV-VIS data, the origin of the absorption feature at 4.6 μm-1 in carbon onions can be attributed to the collective excitations of π plasmons.

Sapientia, 2005, Vol. LX, nº 217 (número completo)

Contenido: El tratamiento de la providencia general de Dios en Santo Tomás de Aquino / Gabriel Delgado – Sobre el ente posible y necesario en Tomás de Aquino / Alberto Berro – El apogeo del nominalismo escolástico y la imposibilidad de la metafísica / Mario Enrique Sacchi – La psicologia de Nietzsche e il suo influsso nella Psicoanalisi / Martín F. Echavarría – Ernst Cassirer: de la tragedia a la ambivalencia de la cultura (parte II) / Amán Rosales Rodríguez – Conocimiento y respuesta al valor. Enfoque fenomenológico axiológico de von Hildebrand / Elizabeth Da Dalt de Mangione -- Heidegger, Aristóteles y la Escolástica / Silvana Filippi – Los “juicios directos” y la probabilidad. Introducción al concepto de probabilidad según John Maynard Keynes / Marcelo Luis Imperiale – Generalis Relativitatis Theoria: geometria et philosophia / Ramiro Délio Borges de Meneses – El arte de gobernar. Nota sobre Michel Foucault a 20 años de su muerte -- Bibliografía

Diário da Constituinte [gravação de vídeo] : [programa n. 217]

O substitutivo do Relator Bernardo Cabral estabelece a proibição da propaganda de medicamentos, tabaco, bebidas alcoólicas e agrotóxicos. Cidadãos opinam sobre o tema. A Associação Brasileira de Propaganda lembra que o Brasil é hoje o segundo exportador de fumo no mundo. Seu presidente afirma que a propaganda desses setores representa 20% do faturamento dos meios de comunicação e que a proibição gerará grande desemprego. O Deputado Thelmo Kirtz (PDS-RS) esclarece que só no Paraná, Santa Catarina e Rio Grande do Sul setecentas e quarenta mil pessoas trabalham nas lavouras de fumo. O Deputado Fausto Rocha (PFL-SP) observa que o cigarro traz malefícios muito sérios para o fumante, inclusive vários tipos de câncer. A Comissão de Sistematização da Assembleia Nacional Constituinte (ANC) começa a debater o substitutivo da Constituição. Na primeira reunião, constituintes criticaram a ausência do Relator Bernardo Cabral e a elaboração de um novo substitutivo que está sendo feito no Instituto Israel Pinheiro, fora do Congresso Nacional. O Deputado José Genoíno (PT-SP) considera que o trabalho da Assembleia Nacional Constituinte tem que ser feito dentro do Congresso Nacional. O Líder do Governo, Deputado Carlos Santana diz que esse trabalho tem que vir para a Comissão de Sistematização. No Instituto Israel Pinheiro, distante 25 kilômetros do Congresso Nacional, o Relator Bernardo Cabral estuda as emendas recebidas sobre o sistema de governo que, segundo ele, é o problema mais difícil de ser contornado.

Hizkuntza idatziaren i(ra)kaskuntza Urtxintxa metodoari jarraituz

Lan hau, Ikastolen Elkarteak sortutako Urtxintxa metodoaren 5 urteko irakaslearen gidaliburuen idazten eta irakurtzen irakasteko atalaren analisian oinarritzen da. Proiektu hau ikuspegi konstruktibista batetik eratu da, beraz, honetan idazten eta irakurtzen irakasteko erabiltzen den materialek teoria konstruktibistari jarraitzen diote. Material hau aztertu da Haur Hezkuntzako 5 urteko gelan idazketa eta irakurketa lantzeko zein neurritan erabilgarria den ezagutzeko helburuarekin. Ikerketaren ondorioek agerian utzi dute Urtxintxa modu eraikitzailean eta globalizatuan hizkuntza idatzia lantzeko gida erabilgarria dela. Idazketa-irakurketaren inguruan proposatzen diren jarduerek hizkuntza idatziaren erabilera funtzionala sustatzen dute eta horrela, haurren ikasketa esanguratsua ziurtatzen dute.