Americans with a Twist : Identity Negotiation of Second Generation Adolescents of Asian Indian Descent

Achieving a sense of identity includes not only the ability to know and understand oneself as an individual, but recognizing one\u27s particular place in society. Adolescents of Asian Indian descent carry the burden of straddling two different cultures, two different worlds; often switching between the two in order to know and understand oneself, and be known and understood. While their social location suggests a middle class status and privilege, their appearance signifies a racial ethnic identity. The conflict therefore lies in the acceptance of dual cultural identities and sense of self, and how the same is negotiated through their everyday lived experiences particularly through the institution of the U.S. public school. This qualitative study explored the nuanced meanings of what it meant to be of Asian Indian descent in U.S. public school and the broader context of society. The findings suggest that the adolescents were capable of negotiating their identities in response to changing socio- cultural and educational scenarios. Acceptance and negotiation of a bicultural identity enabled the adolescent Asian Indian Americans to compartmentalize their lives into public and private spheres; the public sphere of Asian Indian and American cultures and the private sphere of Asian Indian ethnicity

Multiagent Inverse Reinforcement Learning via Theory of Mind Reasoning

We approach the problem of understanding how people interact with each other in collaborative settings, especially when individuals know little about their teammates, via Multiagent Inverse Reinforcement Learning (MIRL), where the goal is to infer the reward functions guiding the behavior of each individual given trajectories of a team's behavior during some task. Unlike current MIRL approaches, we do not assume that team members know each other's goals a priori; rather, that they collaborate by adapting to the goals of others perceived by observing their behavior, all while jointly performing a task. To address this problem, we propose a novel approach to MIRL via Theory of Mind (MIRL-ToM). For each agent, we first use ToM reasoning to estimate a posterior distribution over baseline reward profiles given their demonstrated behavior. We then perform MIRL via decentralized equilibrium by employing single-agent Maximum Entropy IRL to infer a reward function for each agent, where we simulate the behavior of other teammates according to the time-varying distribution over profiles. We evaluate our approach in a simulated 2-player search-and-rescue operation where the goal of the agents, playing different roles, is to search for and evacuate victims in the environment. Our results show that the choice of baseline profiles is paramount to the recovery of the ground-truth rewards, and that MIRL-ToM is able to recover the rewards used by agents interacting both with known and unknown teammates.Comment: Accepted as a full paper at AAMAS202

Chemical control of the mealybug Phenacoccus solenopsis (Hemiptera: Pseudococcidae) in Australian cotton–Glasshouse assessments of insecticide efficacy

Abstract The efficacy of commercially available chemical insecticides and biopesticides on the cotton mealybug (CMB), Phenacoccus solenopsis, was evaluated in the glasshouse. Spirotetramat, sulfoxaflor and buprofezin were identified as key insecticides for use in integrated pest management (IPM) strategies aimed at controlling CMB without flaring other co-occurring pests. When used as a single application, spirotetramat and sulfoxaflor at the rate of 96 g (active ingredient, ha−1) provided variable control of CMB. Spirotetramat used in a double spray tactic (two sequential sprays, 14–15 days apart) without crop oil provided ≥80% control of adult CMB while the addition of oil (5% v/v) increased control to ≥90%. Clothianidin synergised the spirotetramat + oil combination and was identified as a potentially useful tank mix option for use in situations where a quick knockdown of high density and/or large infestation of CMB is required, or to treat high risk infestations in squaring or younger cotton when the abundance of beneficial insects is typically low. Sulfoxaflor used in a double spray tactic provided ≥90% control of adult CMB. The addition of Pulse® penetrant (0.5% v/v) to both options improved overall efficacy. Addition of crop oil to sulfoxaflor did not yield any tangible benefits. Spirotetramat and buprofezin were identified as important tools in managing situations where whitefly (Bemisia tabaci) is the primary pest management target, but CMB is also present in the crop. Buprofezin was effective on early instar mealybugs; this makes it an option for arresting CMB population growth while allowing the beneficial insect populations to increase. Sulfoxaflor was shown to be a useful option in situations where CMB is present along with key pests such as mirids (Creontiades spp.). Mealybugs are typically well controlled by naturally occurring beneficial insects without the need for insecticide use. Chemical insecticides for CMB control should be considered only as a last resort and deployed within the bounds of an IPM strategy

Evaluación de la ganacia de peso y conversión alimenticia de la tilapia (Oreochromis niloticus) en la etapa de engorde 2 alimentada con diferentes relaciones proteína : grasa

Proyecto de graduación (Bachillerato en Ingeniería en Agronomía) Instituto Tecnológico de Costa Rica, Escuela de Ingeniería en Agronomía, 2006El presente trabajo se realizó en la empresa AQUACORPORACIÓN INTERNACIONAL S.A. (ACI S.A.) ubicada en Paso Hondo de Cañas, Guanacaste; el mismo se desarrolló durante los meses de Julio a Noviembre del 2004. El objetivo principal del trabajo fue conocer sobre el manejo experimental del cultivo intensivo de la tilapia (Oreochromis niloticus) a través de la evaluación de dos tipos de alimento con diferente relación proteína:grasa para la etapa de engorde II. El estudio se llevó a cabo en tres baterías de 12 jaulas cada una (unidades experimentales) de 6 metros de largo por 3 metros de ancho y 1.5 metros de profundidad, con malla de 1 pulgada de luz, ubicadas en el Reservorio de la finca. Se utilizaron peces de 350 gramos sembrados a una densidad de 35 peces por metro cuadrado, para un total de 22680 peces (630 peces por unidad experimental). Las relaciones proteína:grasa utilizadas fueron para el tratamiento uno 7,8:1 y para el tratamiento dos 4,1:1. Durante todo el período de prueba se controló la temperatura y el oxígeno disuelto en el agua, factores ambientales que se mantuvieron dentro de los rangos óptimos requeridos por la especie, la mortalidad otro de los parámetros bajo control se vio afectada principalmente por el manipuleo que conllevaron los muestreos realizados. Los muestreos se realizaron una vez al mes a partir del mes de agosto, con los mismos se determinaba la ganancia diaria de peso de los peces por jaula. El cálculo de la ración se hizo semanalmente tomando en cuenta la población por jaula y su peso estimado. Para determinar la eficiencia productiva de los tratamientos utilizados se calculó al final de la prueba la conversión alimenticia y la ganancia de peso total, los resultados obtenidos no muestran diferencias significativas entre tratamientos.AQUACORPORACIÓN INTERNACIONAL S.A. (ACI S.A.) Instituto Tecnológico de Costa Rica Sede San Carlos. Escuela de Ingeniería en Agronomía

Hand and ultrasonic instrumentation for orthograde root canal treatment of permanent teeth.

UNLABELLED: Root canal treatment is a frequently performed dental procedure and is carried out on teeth in which irreversible pulpitis has led to necrosis of the dental pulp. Removal of the necrotic tissue remnants and cleaning and shaping of the root canal are important phases of root canal treatment. Treatment options include the use of hand and rotary instruments and methods using ultrasonic or sonic equipment. OBJECTIVES: The objectives of this systematic review of randomized controlled trials were to determine the relative clinical effectiveness of hand instrumentation versus ultrasonic instrumentation alone or in conjunction with hand instrumentation for orthograde root canal treatment of permanent teeth. MATERIAL AND METHODS: The search strategy retrieved 226 references from the Cochrane Oral Health Group Trials Register (7), the Cochrane Central Register of Controlled Trials (CENTRAL) (12), MEDLINE (192), EMBASE (8) and LILACS (7). No language restriction was applied. The last electronic search was conducted on December 13th, 2007. Screening of eligible studies was conducted in duplicate and independently. RESULTS: Results were to be expressed as fixed-effect or random-effects models using mean differences for continuous outcomes and risk ratios for dichotomous outcomes with 95% confidence intervals. Heterogeneity was to be investigated including both clinical and methodological factors. No eligible randomized controlled trials were identified. CONCLUSIONS: This review illustrates the current lack of published or ongoing randomized controlled trials and the unavailability of high-level evidence based on clinically relevant outcomes referring to the effectiveness of ultrasonic instrumentation used alone or as an adjunct to hand instrumentation for orthograde root canal treatment. In the absence of reliable research-based evidence, clinicians should base their decisions on clinical experience, individual circumstances and in conjunction with patients' preferences where appropriate. Future randomized controlled trials might focus more closely on evaluating the effectiveness of combinations of these interventions with an emphasis on not only clinically relevant, but also patient-centered outcomes

Microscopy techniques for dye distribution in DSCs nanocrystalline TiO2 films

Capture of sunlight has attracted an increasing interest in the scientific community and triggered the development of efficient and cheap photovoltaic devices. Amongst recent generation technologies for solar energy conversion, dye-sensitized solar cells (DSCs) show an optimal trade-off between high-conversion efficiency and low-cost manufacturing. For the last two decades, significant progress has been made and best energy conversion efficiency of the DSC at the laboratory scale has surpassed 12% [1]. A lot of work has focused on the enlargement of surface areas to enhance the amount of adsorbed dyes by reduction of nanoparticle sizes or utilization of novel structures. Nevertheless there remain some crucial details of DSC operation for which limited information is available, namely dye diffusion and adsorption, surface coverage and dye distribution throughout the nc-TiO2 film. Microprobe techniques can be powerful tools to evaluate the dye load, the dye distribution and dye depth profile in sensitized films. Electron Probe Microanalysis (EPMA) and Ion Beam Analytical (IBA) techniques using a micro-ion beam, namely micro-Particle Induced X-ray Emission ( PIXE) and Rutherford Backscattering Spectrometry (RBS), were used to quantify and to study the distribution of the ruthenium organometallic (N719) dye in TiO2 films, profiting from the different penetration depth and beam sizes of each technique. Two different types of films were prepared and sensitized, mesoporous nanoparticles and 1D nanostructured TiO2 films (figure 1). Despite the low concentration of Ru, the high sensitive analytical techniques used allowed to assess the Ru surface distribution and depth profile. Fig. 2 shows the PIXE maps of Ru and Ti indicating an homogeneous surface distribution. The same figure presents the RBS spectra obtained with a 2 MeV proton beam of the same sample showing that a good spectra fit is obtained considering only two sample layers: the first one with a 1.7 ìm thickness; the second one being the SiO2 substrate. The Ru RBS signal also shows that the dye has an homogeneous depth distribution. Due to the fine spatial resolution of the EPMA/WDS (Wavelength Dispersive Spectroscopy) technique it was possible to visualise the dye distribution in sample cross-section (with micrometer or submicrometer dimensions) as presented in Fig. 3 for the elemental mapping of a mesoporous nanoparticle TiO2 film. Dye load evaluation by two different techniques (ìPIXE and EPMA/WDS) provided similar results (Ru/Ti values around 0.5 %). The distribution analysis of the organometallic dye (N719) was done through ruthenium distribution via X-ray mapping. RBS was used to assess the ruthenium depth profile. This assessment can lead to a better understanding of the device performance

An EAI based integration solution for science and research outcomes information management

Open Access articleIn this paper we present an Enterprise Application Integration (EAI) based proposal for research outcomes information management. The proposal is contextualized in terms of national and international science and research outcomes information management, corresponding supporting information systems and ecosystems. Information systems interoperability problems, approaches, technologies and tools are presented and applied to the research outcomes information management case. A business and technological perspective is provided, including the conceptual analysis and modelling, an integration solution based in a Domain-Specific Language (DSL) and the orchestration engine to execute the proposed solution. For illustrative purposes, the role and information system needs of a research unit is assumed as the representative case

A cloud-based integration platform for enterprise application integration: a model-driven engineering approach

This article addresses major information systems integration problems, approaches, technologies, and tools within the context of Model-Driven Software Engineering. The Guaraná integration platform is introduced as an innovative platform amongst state-of-the-art technologies available for enterprises to design and implement integration solutions. In this article, we present its domain-specific modeling language and its industrial cloud-based web development platform, which supports the design and implementation of integration solutions. A real-world case study is described and analyzed; then, we delve into its design and implementation, to finally disclose ten measures that empirically help estimating the amount of effort involved in the development of integration solutions.info:eu-repo/semantics/acceptedVersio