4,913 research outputs found
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This article explores the concerns regarding the use of students\u27 L1, Japanese, within the parameters of university level ESL/EFL classrooms. This review of research explores the ongoing debate from both sides of the argument. The inadequacies of language immersion defined as prescriptive teaching, problems concerning students\u27 beliefs, attitudes, and motivations regarding language immersion, pros and cons of bilingual classroom dynamics, and the role of native speaking teachers of English (NSTE) within the current structure of Japanese academia will all be discussed. This exploration as well brings to light areas for further research regarding the efficacy of utilizing the students\u27 L1 in an artificially constructed immersion environment
Commercial production of tomatoes in Western Australia
The tomato crop is subject to many hazards. Pests, diseases and adverse environmental conditions are frequently encountered and must be overcome. This bulletin has been prepared to give growers, whether they be experienced or new to tomato culture, an outline of the more important cultural practices involved in producing satisfactory crops. Common diseases and pests are described and where possible recommendations for their control are given.https://researchlibrary.agric.wa.gov.au/bulletins3/1004/thumbnail.jp
In Memoriam: Daniel J. Meltzer
Sedan Ă„r 2006 har den syntetiskt framstĂ€llda drogen spice existerat i Sverige, men först Ă„r 2008 blev drogen populĂ€r och tidningar började rikta uppmĂ€rksamhet mot den. Genom att drogen kan byta skepnad i uppbyggnaden kan den förbli laglig, dĂ€rför kan egentligen namnet âspiceâ inte betraktas som ett enhetligt begrepp. VĂ„rt syfte med denna studie blev att granska hur drogen spice beskrivs i tidningar och forskning. Ăven hur drogen betraktas gĂ€llande psykosociala och medicinska avseenden. Detta i förhĂ„llande till socialkonstruktivistiskt perspektiv. Den metod som vi valde att anvĂ€nda oss av i studien var kvantitativ innehĂ„llsanalys. Genom analys av 80 stycken svenska tidningsartiklar hĂ€mtade ur databasen mediearkivet, samt vetenskapliga artiklar och litteratur har vi besvarat vĂ„ra frĂ„gestĂ€llningar. De resultat vi fick frĂ„n analyser visade pĂ„ att tidningar kan vara av betydande roll för ungdomars attityder. Tidningar kan utföra bland annat skrĂ€mselpropaganda för att upplysa och förhindra brukandet av spice, dessvĂ€rre visar resultatet en motsatt effekt. Forskning visar att bruk av spice kan pĂ„verka relationer och arbete negativt. Dessutom Ă€r nĂ„gra bieffekter av spice bröstsmĂ€rtor, vanförestĂ€llningar, sjĂ€lvmordstankar och hjĂ€rtstopp
Reality television portrayals of Kavos, Greece: tourists behaving badly
Reality television programmes are an increasingly ubiquitous element of popular culture. While other forms of popular cultureâs impact on touristsâ perceptions of destination image have been considered in the extant literature, the impact of reality television is under-researched. This article provides a qualitative thematic analysis of televisual media portrayals of the tourist destination of Kavos, on the Greek island of Corfu, whose economy is almost solely reliant upon an increasingly short high-summer season. Reality television portrayals of tourist behavior have generated negative publicity about the resortâs image that may negatively affect potential touristsâ perceptions of Kavos as a destination
Active Galactic Nuclei under the scrutiny of CTA
Active Galactic Nuclei (hereafter AGN) produce powerful outflows which offer
excellent conditions for efficient particle acceleration in internal and
external shocks, turbulence, and magnetic reconnection events. The jets as well
as particle accelerating regions close to the supermassive black holes
(hereafter SMBH) at the intersection of plasma inflows and outflows, can
produce readily detectable very high energy gamma-ray emission. As of now, more
than 45 AGN including 41 blazars and 4 radiogalaxies have been detected by the
present ground-based gamma-ray telescopes, which represents more than one third
of the cosmic sources detected so far in the VHE gamma-ray regime. The future
Cherenkov Telescope Array (CTA) should boost the sample of AGN detected in the
VHE range by about one order of magnitude, shedding new light on AGN population
studies, and AGN classification and unification schemes. CTA will be a unique
tool to scrutinize the extreme high-energy tail of accelerated particles in
SMBH environments, to revisit the central engines and their associated
relativistic jets, and to study the particle acceleration and emission
mechanisms, particularly exploring the missing link between accretion physics,
SMBH magnetospheres and jet formation. Monitoring of distant AGN will be an
extremely rewarding observing program which will inform us about the inner
workings and evolution of AGN. Furthermore these AGN are bright beacons of
gamma-rays which will allow us to constrain the extragalactic infrared and
optical backgrounds as well as the intergalactic magnetic field, and will
enable tests of quantum gravity and other "exotic" phenomena.Comment: 28 pages, 23 figure
Rapid Eye Movements in Sleep Furnish a Unique Probe Into Consciousness
The neural correlates of rapid eye movements (REMs) in sleep are extraordinarily robust; including REM-locked multisensory-motor integration and accompanying activation in the retrosplenial cortex, the supplementary eye field and areas encompassing cholinergic basal nucleus (Hong et al., 2009). The phenomenology of REMs speaks to the notion that perceptual experience in both sleep and wakefulness is a constructive process â in which we generate predictions of sensory inputs and then test those predictions through actively sampling the sensorium with eye movements. On this view, REMs during sleep may index an internalized active sampling or âscanningâ of self-generated visual constructs that are released from the constraints of visual input. If this view is correct, it renders REMs an ideal probe to study consciousness as âan exclusively internal affairâ (Metzinger, 2009). In other words, REMs offer a probe of active inference â in the sense of predictive coding â when the brain is isolated from the sensorium in virtue of the natural blockade of sensory afferents during REM sleep. Crucially, REMs are temporally precise events that enable powerful inferences based on time series analyses. As a natural, task-free probe, (REMs) could be used in non-compliant subjects, including infants and animals. In short, REMs constitute a promising probe to study the ontogenetic and phylogenetic development of consciousness and perhaps the psychopathology of schizophrenia and autism, which have been considered in terms of aberrant predictive coding
Relocating Underwater Features Autonomously Using Sonar-Based SLAM
This paper describes a system for reacquiring features of interest in a shallow-water ocean environment, using autonomous underwater vehicles (AUVs) equipped with low-cost sonar and navigation sensors. In performing mine countermeasures, it is critical to enable AUVs to navigate accurately to previously mapped objects of interest in the water column or on the seabed, for further assessment or remediation. An important aspect of the overall system design is to keep the size and cost of the reacquisition vehicle as low as possible, as it may potentially be destroyed in the reacquisition mission. This low-cost requirement prevents the use of sophisticated AUV navigation sensors, such as a Doppler velocity log (DVL) or an inertial navigation system (INS). Our system instead uses the Proviewer 900-kHz imaging sonar from Blueview Technologies, which produces forward-looking sonar (FLS) images at ranges up to 40 m at approximately 4 Hz. In large volumes, it is hoped that this sensor can be manufactured at low cost. Our approach uses a novel simultaneous localization and mapping (SLAM) algorithm that detects and tracks features in the FLS images to renavigate to a previously mapped target. This feature-based navigation (FBN) system incorporates a number of recent advances in pose graph optimization algorithms for SLAM. The system has undergone extensive field testing over a period of more than four years, demonstrating the potential for the use of this new approach for feature reacquisition. In this report, we review the methodologies and components of the FBN system, describe the system's technological features, review the performance of the system in a series of extensive in-water field tests, and highlight issues for future research.QC 20130822</p
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