Historical consciousness, the cultural imaginary and postcolonial subjectivity in Ruth Ozeki\u27s A Tale for the Time Being

This project fuses personal narrative and literary criticism, as it excavates Ruth Ozeki’s representations of Japanese culture in the novel A Tale for the Time Being. I argue that her use of stereotype unsettles popular images of Japan by constructing characters who challenge the hegemonic gaze of the Western cultural imaginary. My reading connects continuing investment in these stereotypical representations to the postmodern epoch, where individuals and society as a whole have become incapable of dealing with the past. I explore the links between postmodern amnesia, the disappearance of a multiplicity of perspectives in history and the inclination of Western mass media and popular culture to reproduce stereotypes. I suggest that Ozeki’s novel reveals that we continue to rely on stereotypes to understand the world around us, particularly when we seek to know other people and other cultures. Ultimately, I find that Ozeki encourages her reader to develop a historical consciousness, as locating ourselves within the complex web of time, history and politics allows us to better negotiate the narratives and images that inform particular postcolonial subjectivities

Opportunismo e coordinamento: soluzioni regolative e istituzionali

The present paper builds on Arrighetti e Curatolo, 2009, 2010 by introducing heterogeneous opportunists into an agent-based simulated world populated by heterogeneous loyal agents playing a repeated coordination game. On average, opportunistic exploitation of economic resources lowers coordination, especially in less endowed contexts. Simulation strategy proposed in the paper compares, keeping constant the aggregate cost of policy, three different kinds of public schemes aimed at reducing the economic cost of opportunism: regulatory schemes, incentive (or premiality) schemes and a third scheme based on institutional catalyst agents. Regulatory schemes based on sanctions produce the emergence of adverse redistribution effects: removal of opportunism is an efficient strategy only for less endowed local contexts, while the policy taxation burden hits too much the local environments where collective action is stronger. In line with many authors (see Hall, 2005; Camerer e Hogarth, 1999; Verdier, 2004), incentive (premiality) schemes perform badly especially because their net effects are limited to the first stages of the games. The schemes based on institutional catalyst agents seems to be the best performers: in facts, these schemes are efficient, especially through a process of learning, in pulling the other agents toward an high degree of coordination, so counter-balancing the effects of opportunists’ exploitation. Moreover an high degree of synergy emerges from a combined regulatory-institutional catalyst scheme, while incentive scheme (premiality) show, at the opposite, negative synergy both with institutional catalyst agents’ and regulatory schemes.Opportunism, Coordination Games, Regulation, Incentives, Institutions

Determinanti della domanda di laureati nell'industria manifatturiera italiana

Tertiary education attainment of italian labour force, particularly in the manufacturing industry, shows empirically a large gap with respect to the other OECD countries, although human capital growth has been increasingly addressed as one of the main channel towards productivity, competitive success and firm size growth. The paper analyses empirically four different explicative hypotheses, each with its own set of proxies: firm size, sectoral differences in human capital intensity, education supply of the labour force, and firm-specific demand issues. Estimates show that while structural explanations based on firm size and sectoral differences play a key causal role in determining the observed low level of human capital, supply conditions seem to have a lower esplicative power, both directly through local supply of educated workers and indirectly through their weight on the labour cost. Firm-specific demand variables, particularly those proxying for the complexity and richness of organizational structure and management, show instead the highest explicative power. More particularly, family-managed firms seem to perform a sort of "subjective resistance" to a more intensive employment of highly educated labour force.Human capital, Educational attainment, Labour demand, Labour supply, Graduate employment , Staff ratio, White Collars, Manufacturing industries, Firm size, Italy

Swelling-driven soft elastic catapults

The paper outlines and analyzes the conditions for optimizing a catapult mechanism that emerges in a soft rod, initially completely adhered to a rigid lubricated substrate, as a result of oil absorption. Oil diffusion causes differential swelling across the rod thickness, inducing rod bending that is counteracted by adhesion to the substrate. The effect culminates in a gradual detachment of the rod from the substrate, followed by a rapid shooting phase when one end detaches. To elucidate this intricate phenomenon, we employ a modified Euler elastica model that incorporates two additional parameters: the spontaneous stretching lambda, that quantifies the relative elongation of the material with respect to its dry, unstressed configuration, and the spontaneous curvature, c(0), that captures the rod tendency to deflect due to diffusion-induced non-uniform stretching through the thickness. The interrelated parameters lambda and c(0), which evolve over time as they are influenced by the diffusion process are then calculated numerically with a FEM code that combines the finite elasticity model with the Flory-Rehner diffusion model. Finally, we present a comprehensive optimization study of the catapult based on its geometric and material properties, providing insights for the design and control of this novel mechanism

Single-injection thoracic paravertebral block for postoperative pain treatment after thoracoscopic surgery

Background. Thoracoscopic surgery can be associated with considerable postoperative pain. While the benefits of paravertebral block on pain after thoracotomy have been demonstrated, no investigations on the effects of paravertebral block on pain after thoracoscopy have been conducted. We tested the hypothesis that a single-injection thoracic paravertebral block, performed preoperatively, reduces pain scores after thoracoscopic surgery. Methods. Of 45 patients recruited, 40 completed the study. They were randomly allocated to two groups: the paravertebral group received i.v. patient-controlled analgesia (PCA) with morphine plus single-injection thoracic paravertebral block with bupivacaine 0.375% and adrenaline 1:200 000 0.4 ml kg−1 (n=20). The control group was treated with a back puncture without injection and morphine PCA (n=20). Results. The main outcomes recorded during 48 h after surgery were pain scores using the visual analogue scale (VAS, 0-100). Secondary outcomes were cumulative morphine consumption and peak expiratory flow rate (PEFR). Half an hour and 24 h after surgery, median (25th-75th percentiles) VAS on coughing in the paravertebral group was 31.0 (20.0-55.0) and 30.5 (17.5-40.0) respectively and in the control group it was 70.0 (30.0-100.0) and 50.0 (25.0-75.0) respectively. The difference between the groups over the whole observation period was statistically significant (P<0.05). Twenty-four and 48 h after surgery, median (25th-75th percentiles) cumulative morphine consumption (mg) was 49.0 (38.3-87.0) and 69.3 (38.8-118.5) respectively in the paravertebral group and 51.2 (36.0-84.1) and 78.1 (38.4-93.1) in the control group (statistically not significant). No differences were found in PEFR or the incidence of any side-effects between groups. Conclusion. We conclude that single-shot preoperative paravertebral block improves post-operative pain treatment after thoracoscopic surgery in a clinically significant fashio

Local treatment with electrochemotherapy of superficial angiosarcomas: Efficacy and safety results from a multi-institutional retrospective study

Background: Angiosarcoma is an aggressive vascular neoplasm with a high propensity for local recurrence. Electrochemotherapy is an emerging skin-directed therapy, exerting prominent cytotoxic activity, and antivascular effects. Its efficacy in angiosarcoma has not been investigated. Methods: This multicenter retrospective analysis reviewed patients who underwent electrochemotherapy from 2007 to 2014 for superficial advanced angiosarcomas. Bleomycin was administered intravenously and delivered within tumors by means of percutaneously applied electric pulses, according to the European Standard Operating Procedures for Electrochemotherapy. Tumor assessment was performed using RECIST (version 1.1). Toxicity (CTCAE, v4.0) and local progression-free survival (LPFS) were also evaluated. Results: Nineteen patients (13 with locally advanced and 6 with metastatic angiosarcomas) were treated. Tumor sites were: scalp (n¼5), breast(n¼8), other skin sites (n¼3), and soft tissue (n¼3). Target lesions (n¼54) ranged in size from 1.5 to 2.5 cm (median, 2 cm). Treatment was well tolerated. After 2 months, an objective response was observed in 12/19 (63%) patients, complete in 8 (42%). One-year LPFS within treatment field was 68%. Local symptom improvement included palliation of bleeding (5/19 patients) and pain relief (6/19 patients). Conclusions: Electrochemotherapy may represent a new locoregional treatment for selected patients with superficial angiosarcomas

Improving Data Collection and Analysis Interface for the Data Acquisition Software of the Spin Laboratory at NASA Glenn Research Center

In jet engines, turbines spin at high rotational speeds. The forces generated from these high speeds make the rotating components of the turbines susceptible to developing cracks that can lead to major engine failures. The current inspection technologies only allow periodic examinations to check for cracks and other anomalies due to the requirements involved, which often necessitate entire engine disassembly. Also, many of these technologies cannot detect cracks that are below the surface or closed when the crack is at rest. Therefore, to overcome these limitations, efforts at NASA Glenn Research Center are underway to develop techniques and algorithms to detect cracks in rotating engine components. As a part of these activities, a high-precision spin laboratory is being utilized to expand and conduct highly specialized tests to develop methodologies that can assist in detecting predetermined cracks in a rotating turbine engine rotor. This paper discusses the various features involved in the ongoing testing at the spin laboratory and elaborates on its functionality and on the supporting data system tools needed to enable successfully running optimal tests and collecting accurate results. The data acquisition system and the associated software were updated and customized to adapt to the changes implemented on the test rig system and to accommodate the data produced by various sensor technologies. Discussion and presentation of these updates and the new attributes implemented are herein reporte

A robust numerical methodology for fatigue damage evolution simulation in composites

Composite materials, like metals, are subject to fatigue effects, representing one of the main causes for component collapse in carbon fiber‐reinforced polymers. Indeed, when subject to low stress cyclic loading, carbon fiber‐reinforced polymers exhibit gradual degradation of the mechanical properties. The numerical simulation of this phenomenon, which can strongly reduce time and costs to market, can be extremely expensive in terms of computational effort since a very high number of static analyses need to be run to take into account the real damage propagation due the fatigue effects. In this paper, a novel cycle jump strategy, named Smart Cycle strategy, is introduced in the numerical model to avoid the simulation of every single cycle and save computational resources. This cycle jump strategy can be seen as an enhancement of the empirical model proposed by Shokrieh and Lessard for the evaluation of the fatigue‐induced strength and stiffness degradation. Indeed, the Smart Cycle allows quickly obtaining a preliminary assessment of the fatigue behavior of composite structures. It is based on the hypothesis that the stress redistribution, due to the fatigue‐induced gradual degradation of the material properties, can be neglected until sudden fiber and/or matrix damage is verified at element/lamina level. The numerical procedure has been implemented in the commercial finite element code ANSYS MECHANICAL, by means of Ansys Parametric Design Languages (APDL). Briefly, the Smart Cycle routine is able to predict cycles where fatigue failure criteria are likely to be satisfied and to limit the numerical simulation to these cycles where a consistent damage propagation in terms of fiber and matrix breakage is expected. The proposed numerical strategy was preliminarily validated, in the frame of this research study, on 30° fiber‐oriented unidirectional coupons subjected to tensile– tensile fatigue loading conditions. The numerical results were compared with literature experimental data in terms of number of cycles at failure for different percentage of the static strength. Lastly, in order to assess its potential in terms of computational time saving on more complex structures and different loading conditions, the proposed numerical approach was used to investigate the fatigue behavior of a cross‐ply open‐hole composite panel under tension–tension fatigue loading conditions