Modular Approach to Ultra-fast Charging Stations

Leone Carola,Longo Michela 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.4

Road transport electrifi cation is essential for meeting the European Union’s goals of decarbonization and climate change. In this context, an Ultra-Fast Charging (UFC) system is deemed necessary to facilitate the massive penetration of Electric Vehicles (EVs) on the market; particularly as medium-long distance travels are concerned. Anyway, an ultra-fast charging infrastructure represents the most critical point as regards hardware technology, grid-related issues, and fi nancial sustainability. Thus far, this paper presents an impact analysis of a fast-charging station on the grid in terms of power consumption, obtained by the Monte Carlo simulation. Simulation results show that it is not economical convenient size the assumed ultrafast charging station for the maximum possible power also considering its high impact on the grid. In view of the results obtained from the impact analysis, the last part of the paper focuses on fi nding a method to reduce the power installed for the DC/DC stage while keeping the possibility for the electric vehicle to charge at their maximum power. To achieve this goal a modular approach is proposed. Finally, two diff erent modular architectures are presented and compared. In both the solutions, the probability of having EVs charging at limited power is less than 5%. Road transport electrification is essential for meeting the European Union's goals of decarbonization and climate change. In this context, an Ultra-Fast Charging (UFC) system is deemed necessary to facilitate the massive penetration of Electric Vehicles (EVs) on the market; particularly as medium-long distance travels are concerned. Anyway, an ultra-fast charging infrastructure represents the most critical point as regards hardware technology, grid-related issues, and financial sustainability. Thus far, this paper presents an impact analysis of a fast-charging station on the grid in terms of power consumption, obtained by the Monte Carlo simulation. Simulation results show that it is not economical convenient size the assumed ultra-fast charging station for the maximum possible power also considering its high impact on the grid. In view of the results obtained from the impact analysis, the last part of the paper focuses on finding a method to reduce the power installed for the DC/DC stage while keeping the possibility for the electric vehicle to charge at their maximum power. To achieve this goal a modular approach is proposed. Finally, two different modular architectures are presented and compared. In both the solutions, the probability of having EVs charging at limited power is less than 5%.

Initial Experience Using the New pHLO 0.072-inch Large-Bore Catheter for Direct Aspiration Thrombectomy in Acute Ischemic Stroke

Leone Giuseppe,Muto Massimo,Giordano Flavio,Guarnieri Gianluigi,Donna Antonio Di,Russo Camilla,Romano Daniele Giuseppe,Candelaresi Paolo,Servillo Giovanna,Spina Emanuele,Mase Antonio De,Andreone Vince 대한신경중재치료의학회 2023 Neurointervention Vol.18 No.1

Purpose: A direct aspiration, first pass technique (ADAPT) has been introduced as a rapid and safe thrombectomy strategy in patients with intracranial large vessel occlusion (LVO). The aim of the study is to determine the technical feasibility, safety, and functional outcome of ADAPT using the newly released large bore pHLO 0.072-inch aspiration catheter (AC; Phenox).Materials and Methods: We performed a retrospective analysis of data collected prospectively (October 2019–November 2021) from 2 comprehensive stroke centers. Accessibility of the thrombus, vascular recanalization, time to recanalization, and procedure-related complications were evaluated. National Institutes of Health stroke scale scores at presentation and discharge and the modified Rankin scale (mRS) score at 90 days post-procedure were recorded.Results: Twenty-five patients (14 female, 11 male) with occlusions of the anterior circulation were treated. In 84% of cases, ADAPT led to successful recanalization with a median procedure time of 28 minutes. In the remaining cases, successful recanalization required (to a total of 96%; modified thrombolysis in cerebral infarction score 2b/3) the use of stent retrievers. No AC-related complications were reported. Other complications included distal migration of the thrombus, requiring a stent-retriever, and symptomatic PH2 hemorrhage in 16% and 4%, respectively. After 3 months, 52% of the patients had mRS scores of 0–2 with an overall mortality rate of 20%.Conclusion: Results from our retrospective case series revealed that thrombectomy of LVOs with pHLO AC is safe and effective in cases of large-vessel ischemic stroke. Rates of complete or near-complete recanalization after the first pass with this method might be used as a new benchmark in future trials.

TREND OF USA-Heavy Duty

Doug Leone,Senior Engineer 한국자동차공학회 2002 한국자동차공학회 기타 간행물 Vol.- No.-

Sémiotique de la vacuité

Massimo Leone 고려대학교 응용문화연구소 2015 에피스테메 Vol.0 No.13

The article first interrogates words’ ability of undoing things, taking asexamples the Islamic verbal formula for divorcing a wife and atheistrituals for religious disaffiliation. Having pointed out differences andsimilarities between words that do things and words that undo them, thearticle then tackles the question whether images can do things in the sameway as words do them in the frame of speech acts theory. Finally, it dealswith the issue of whether images too, like words, can be used not only todo things, but also to undo them. The case study of images used toritually undo imagination, like yantras or hesychastic icons, is analyzed.

Manque de présence et explosion de sensorialité dans la communication contemporaine : une sémiotique des « gastromanies » à partir d’À rebours.

Massimo Leone 한국영상문화학회 2016 영상문화 Vol.0 No.28

Torino printanière – Méditations pour une sémiotique culturelle des images

Massimo Leone 고려대학교 응용문화연구소 2012 에피스테메 Vol.0 No.8

The paper tries to explore the potentialities of a cultural semiotics of images through both a comparison with other semiotic approaches and through the example of a specific analysis: a cultural semiotic study of De Chirico’s painting Torino printanière. The traditional Greimasian approach to the semiotic analysis of images, it is argued, fails in explaining how their meaning depends on the cultural contexts of their production and reception. Likewise, the traditional Echian approach underestimates the fact that ideally cooperative spectators are nowadays more an exception that the norm: as a consequence of the globalization and digitalization of images, more and more people lack an adequate “encyclopedia” to interpret images they are confronted with. The paper therefore claims that a cultural semiotics of images is urgently needed, and contends that the school of Moscow/Tartu can provide many suggestions about how to conceive it. According to Jurij M. Lotman’s theory, indeed, images must be interpreted in relation to their semiosphere, a hypothesis ― formulated through the meta-discourse of semiotics ― about how a culture produces and manages meaning both inside such culture and in relationships with what such culture considers as external to it. However, the paper points out, in Lotman’s theory the semiosphere is not only a repository of texts, but also a mechanism that produces them. As a consequence, semioticians can both study a semiosphere in order to understand the meaning of an image, and analyze an image in order to understand the meaning of a semiosphere. The paper concludes that only the synergic approach between micro-semiotic and macro-semiotic analysis ― including the methods of post-greimasian semiotics ― is able to formulate solid hypotheses not only on what images meant at the moment of their production, but also what they mean when they are received in a completely different semiosphere, by people whose visual culture is sometimes radically different from that of the image’s original context.

Intergenerational Mobility in Education: Estimates of the Worldwide Variation

Tharcisio Leone 중앙대학교 경제연구소 2019 Journal of Economic Development Vol.44 No.4

This paper uses the recently published “Global Database on Intergenerational Mobility” to present a detailed picture of the chances of such mobility around the world. The empirical results obtained from transition matrices and linear regression models, being furthermore based on harmonized data for the education attainments of children and their parents across 148 countries worldwide, point to three main conclusions: First, the likelihood of attaining intergenerational mobility differs widely across countries and world regions. Second, intergenerational persistence in education level is particularly strong in least-developed countries. Third and finally, and perhaps most importantly, the mobility gap between rich and poor countries has increased over time.

Efficacy and fertility outcomes of levonorgestrel-releasing intra-uterine system treatment for patients with atypical complex hyperplasia or endometrial cancer: a retrospective study

Umberto Leone Roberti Maggiore,Fabio Martinelli,Giulia Dondi,Giorgio Bogani,Valentina Chiappa,Maria Teresa Evangelista,Viola Liberale,Antonino Ditto,Simone Ferrero,Francesco Raspagliesi 대한부인종양학회 2019 Journal of Gynecologic Oncology Vol.30 No.4

Objective: To investigate the efficacy of levonorgestrel-releasing intra-uterine system (LNG-IUS) treatment in patients affected by atypical complex hyperplasia/endometrial cancer (ACH/EC) wishing to preserve their fertility and to present fertility outcomes of those patients who actively tried to conceive. Methods: Data of consecutive women with ACH/EC who underwent fertility-sparing treatment using LNG-IUS were retrospectively evaluated. Results: Overall, 48 patients and the mean (±standard deviation) length of follow-up was 82.6±47.2 months. Among patients with ACH, 25/28 (89.3%) had a complete response (CR), 2/28 (7.1%) had a partial response (PR) and 1/28 (3.6%) had a progressive disease (PD). Mean (±standard deviation) time to CR was 6.7±4.0 months. Among patients with G1 EC, 13/16 (81.3%) had a CR, 1/16 (6.3%) had a PR and 2/16 (12.5%) had a PD. Mean (±standard deviation) time to CR was 5.0±2.9 months. Among patients with G2 EC, 3/4 (75.0%) had a CR and 1/4 (25.0%) had a PD. Mean (±standard deviation) time to CR was 4.0±0 months. Only 19 (39.6%) patients who had CR actually attempted to conceive. Eleven (57.9%) women tried to conceive naturally while 8 (42.1%) women underwent an in vitro fertilization (IVF). Fourteen (73.7%) patients wishing to conceive achieved a pregnancy (6 spontaneously and 8 through IVF). Conclusions: Fertility-sparing treatment of patient with ACH/EC with LNG-IUS achieves high regression rates and good fertility outcomes. Future larger multi-institutional studies should be designed to confirm these preliminary findings.

Current Diagnosis and Management of Hypersensitivity Pneumonitis

( Paolo Maria Leone ),( Luca Richeldi ) 대한결핵 및 호흡기학회 2020 Tuberculosis and Respiratory Diseases Vol.83 No.2

Hypersensitivity Pneumonitis (HP) one of the most common interstitial lung diseases (ILDs) is characterized by exposure to an inhaled inciting antigen that leads to a host immunologic reaction determining interstitial inflammation and architectural distortion. The underlying pathogenetic mechanisms are unclear. The absence of international shared diagnostic guidelines and the lack of a “gold-standard” test for HP combined with the presence of several clinical and radiologic overlapping features makes it particularly challenging to differentiate HP from other ILDs, also in expert contests. Radiology is playing a more crucial role in this process; recently the headcheese sign was recognized as a more specific for chronic-HP than the extensive mosaic attenuation. Several classification proposals and diagnostic models have been advanced by different groups, with no prospective validation. Therapeutic options for HP have been limited to antigen avoidance and immunosuppressant drugs over the last decades. Several questions about this condition remain unanswered and there is a need for more studies.

Minimally invasive surgery improves short-term outcomes of nerve-sparing radical hysterectomy in patients with cervical cancer: a propensity-matched analysis with open abdominal surgery

Giorgio Bogani,Diego Rossetti,Antonino Ditto,Fabio Martinelli,Valentina Chiappa,Chiara Leone,Umberto Leone Roberti Maggiore,Domenica Lorusso,Francesco Raspagliesi 대한부인종양학회 2019 Journal of Gynecologic Oncology Vol.30 No.2

Objectives: Nerve-sparing radical hysterectomy has been implemented in order to reduce pelvic floor dysfunctions in women undergoing radical surgery for cervical cancer. Here, we aimed to investigate if the adoption of laparoscopic surgery impacts on patients' outcomes. Methods: Data of consecutive patients affected by cervical cancer who had laparoscopic nerve-sparing radical hysterectomy were matched 1:1 with an historical cohort of patients undergoing open procedure. A propensity-score matched algorithm was applied. Results: Thirty-five patients' pairs (70 patients: 35 undergoing laparoscopic vs. 35 undergoing open abdominal nerve-sparing radical hysterectomy) were included. Demographic and baseline oncologic characteristics were balanced between groups. Patients undergoing laparoscopic surgery had similar operative time than patients undergoing open abdominal procedures (249 [±91.5] vs. 223 [±65.0] minutes; p=0.066). Laparoscopic approach correlated with lower blood loss (30.5 [±11.0] vs. 190 [90.4] mL; p<0.001) and shorter hospital stay (3.2 [±1.2] vs. 5.4 [2.0] days; p=0.023). Patients undergoing laparoscopy experienced a lower 30-day pelvic floor dysfunction rate than patients having open surgery. Moreover, they experienced shorter recovery of bladder function than patients having open procedures (median, 7 vs. 9 days; p=0.004, log-rank test). Conclusion: Laparoscopic approach resulted in a faster recovery of bladder function in comparison to open surgery for patients undergoing nerve-sparing radical hysterectomy.