1,721,439 research outputs found

    A Benefit Segmentation of the Italian Market for Full Electric Vehicles

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    The aims of this study are to provide a segmentation of Italian car users for full electric vehicles (FEVs) based on the perceived attractiveness of the benefits of a full electric city car offering, and to determine whether identified segments are denoted by different demographic characteristics, knowledge and attitudes toward FEVs. The analysis was conducted on a sample of 8423 Italian car users. Factor analysis was used to identify latent dimensions of benefits of the examined car offering. The k-means clustering algorithm was applied to identify latent dimensions for classifying respondents. χ2 and non-parametric Kruskal–Wallis and Dunn’s multiple comparison tests were used for verifying differences among segments. Four segments were identified. Each segment exhibited significant differences in demographic characteristics, product knowledge and attitudes toward FEVs. Dissimilar knowledge and attitudes toward FEVs among identified profiles, with heterogeneous perceived benefits, suggest the advisability of implementing differentiated communication strategies to foster a still embryonic market. The article provides further insight into the limited managerial literature devoted to FEVs in Italy, and provides a new perspective on the segmentation of car users, including the investigation of attitudes, whereas the majority of contributions on this subject address only the investigation of product functional benefits

    A single-centre experience on endovascular repair of non-infected extracranial internal carotid artery pseudoaneurysms

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    In the period ranging from 2006 to 2010, 5 endovascular interventions for carotid pseudoaneurysm (4 post-carotid endarterectomy [post-CEA] and 1 posttraumatic), without signs of infection, were carried out. All patients were neurologically asymptomatic. A covered stent was used in 4 cases. The fifth patient, undergoing a third endovascular procedure after a re-do open surgical repair of a post-CEA pseudoaneurysm, was treated with a bare stent. The technical success rate was 100%. A type 1 endoleak at the end of the procedure was observed in 1 patient, but it disappeared before discharging. No perioperative neurologic events occurred. At the most recent mean follow-up of 24 months, all patients are alive, without neurologic symptoms, and all have maintained patency of the internal carotid artery and are pseudoaneurysm-free

    Gender-related outcomes in the endovascular treatment of infrainguinal arterial obstructive disease.

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    OBJECTIVE: The purpose of this study was to retrospectively analyze early and midterm results of endovascular infrainguinal peripheral revascularizations in female patients in our single-center experience, paying particular attention to clinical, anatomic, and technical factors affecting perioperative and follow-up outcomes. MATERIALS AND METHODS: From January 2000 to December 2010, 258 endovascular interventions for femoropopliteal disease were performed. Interventions were retrospectively divided into two groups: interventions performed in women (80 interventions, group 1) and interventions performed in men (178 interventions, group 2). The two groups of patients were compared in terms of demographic data, common risk factors for atherosclerosis, and comorbidities. Early (intraoperative and <30-day) results were analyzed in terms of technical success, conversion to open surgery, primary patency, secondary patency, and, for patients with critical limb ischemia, limb salvage. The follow-up program consisted of clinical and duplex scanning examinations with ankle-brachial index (ABI) measurement within the third postoperative month, at 6 and 12 months, and yearly thereafter. Follow-up results were analyzed in terms of survival, primary and secondary patency, assisted primary patency, and, for patients with critical ischemia, limb salvage. RESULTS: There were no differences between the two groups in terms of risk factors for atherosclerosis, comorbidities, clinical, and anatomic status. Technical success was 96.9% and technical failure rates were 1.2% in group 1 and 3.9% in group 2 (P = .2). Three in-hospital deaths were recorded, all in group 2, whereas in-hospital thromboses occurred in five patients, two in group 1 and three in group 2; with conversion to surgical bypass in all these cases, and in three of the cases, major amputation was necessary (two in group 1 and one in group 2). Cumulative 30-day mortality was 1.1%, with no difference between women (no deaths) and men (three deaths, 1.6%; P = .4). Overall amputation rate at 30 days was 1.2%, again with no differences between the two groups (2.5% and 0.6%, respectively; P = .4); also, the rate of perioperative thrombosis (overall 2.7%) was similar between the two groups (2.5% and 3.3%, respectively; P = .9). Mean duration of follow-up was 17 months (range, 1-85 months). Estimated 36-month survival rates were 95% in group 1 and 84.5% in group 2 (P = .4; log-rank, 0.7). Cumulative primary patency rates at 36 months were 38% in group 1 and 42% in group 2 (P = .4; log-rank, 0.5). Assisted primary patency at 36 months was 45.1% in group 1 and 60.5% in group 2, whereas secondary patency rates were 63.5% and 76%, respectively (P = .8; log-rank, 0.03). CONCLUSION: Endovascular treatment of femoropopliteal occlusive disease provides similar results between men and women at an intermediate follow-up. There is, however, a trend toward poorer results in women requiring further analysis at a longer follow-up period

    Aortic type B dissection with acute expansion of iliac artery aneurysm in previous endovascular repair with iliac branched graft.

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    We report the case of a patient previously treated with an iliac branch endograft for isolated iliac artery aneurysm who developed, more than 2 years later, a type B aortic dissection resulting in the acute expansion of the previously excluded iliac aneurysm. Successful endovascular salvage is described

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    The magic grasp: Motor expertise in deception

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    This is an open access article, with the official published version at the link below.Background: Most of us are poor at faking actions. Kinematic studies have shown that when pretending to pick up imagined objects (pantomimed actions), we move and shape our hands quite differently from when grasping real ones. These differences between real and pantomimed actions have been linked to separate brain pathways specialized for different kinds of visuomotor guidance. Yet professional magicians regularly use pantomimed actions to deceive audiences. Methodology and Principal Findings: In this study, we tested whether, despite their skill, magicians might still show kinematic differences between grasping actions made toward real versus imagined objects. We found that their pantomimed actions in fact closely resembled real grasps when the object was visible (but displaced) (Experiment 1), but failed to do so when the object was absent (Experiment 2). Conclusions and Significance: We suggest that although the occipito-parietal visuomotor system in the dorsal stream is designed to guide goal-directed actions, prolonged practice may enable it to calibrate actions based on visual inputs displaced from the action.The study was supported by the Medical Research Council (G0401090)
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