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| 1 | A Test for Rational Bubbles in the NASDAQ Stock Index:A Fractionally Integrated Approach显示文摘 | J.Cunado J.A.GiI-Alana L.A. de Gracia F.Perez | | 0，，29： | 1 |
| 2 | Availability assessment of voltage source converter HVDC grids using optimal power flow-based remedial actions显示文摘This study proposes a methodology for assessing the availability of voltage source converter high-voltage direct current(HVDC)grids based on the enumeration methodology of contingency analysis with N−2 criteria and makes contributions in the computation of remedial actions and the definition and computation of reliability indices applied for HVDC grids.Thus,this study proposes the computation of remedial actions based on an optimal power flow,looking to maintain power exchanges between HVDC and high-voltage alternating current grids,when a contingency occurs on the HVDC grid and converter stations or HVDC lines are out of their operating limits.On the other hand,an HVDC grid has the function of injecting and extracting power from AC interconnected zones,and then traditionally used nodal reliability indices must be modified to indices that reflect the performance of the HVDC network to fulfil its function of interconnection of systems.This study defines two sets of availability indices applicable to HVDC grids:(i)loss of power and energy extracted from the DC grid to the AC zones and(ii)loss of power and energy injected to AC zones from the DC grid.The proposed methodology is applied to perform the availability assessment of the CIGRE B4 DC grid test system and the results are presented. | Mario A.Rios Jeffer L.Vera Maria F.Perez | 2020 | High Voltage2020，5，5： | 0 |
| 3 | Post-compression of high-energy,sub-picosecond laser pulses显示文摘The post-compression technique based on self-phase modulation of high-energy pulses leads to an increase in achievable peak power and intensity.Typically,the pulses considered in experiments have been less than 100 fs in duration.Here,the method is applied to the ELFIE laser system at the LULI facility,for a pulse of 7 J energy and an initial measured duration of 350 fs.A 5-mm-thick fused silica window and a 2 mm cyclic-olefin polymer were used as optical nonlinear materials.The 9 cm diameter beam was spectrally broadened to a bandwidth corresponding to 124 fs Fourier-limited pulse duration,and then it was partly post-compressed to 200 fs.After measuring the spatial spectra of the beam fluence,a uniform gain factor of 4 increase in the fluctuations over the studied range of frequencies is observed,due to small-scale self-focusing. | P.-G.Bleotu J.Wheeler S.Yu.Mironov V.Ginzburg M.Masruri A.Naziru R.Secareanu D.Ursescu F.Perez J.De Sousa D.Badarau E.Veuillot P.Audebert E.Khazanov G.Mourou | 2023 | High Power Laser Science and Engineering2023，11，2： | 0 |
| 4 | Characterization and performance of the Apollon short-focal-area facility following its commissioning at 1 PW level显示文摘We present the results of the first commissioning phase of the short-focal-length area of the Apollon laser facility(located in Saclay,France),which was performed with the first available laser beam(F2),scaled to a nominal power of 1 PW.Under the conditions that were tested,this beam delivered on-target pulses of 10 J average energy and 24 fs duration.Several diagnostics were fielded to assess the performance of the facility.The on-target focal spot and its spatial stability,the temporal intensity profile prior to the main pulse,and the resulting density gradient formed at the irradiated side of solid targets have been thoroughly characterized,with the goal of helping users design future experiments.Emissions of energetic electrons,ions,and electromagnetic radiation were recorded,showing good laser-to-target coupling efficiency and an overall performance comparable to that of similar international facilities.This will be followed in 2022 by a further commissioning stage at the multipetawatt level. | K.Burdonov A.Fazzini V.Lelasseux J.Albrecht P.Antici Y.Ayoul A.Beluze D.Cavanna T.Ceccotti M.Chabanis A.Chaleil S.N.Chen Z.Chen F.Consoli M.Cuciuc X.Davoine J.P.Delaneau E.d’Humieres J.-L.Dubois C.Evrard E.Filippov A.Freneaux P.Forestier-Colleoni L.Gremillet V.Horny L.Lancia L.Lecherbourg N.Lebas A.Leblanc W.Ma L.Martin F.Negoita J.-L.Paillard D.Papadopoulos F.Perez S.Pikuz G.Qi F.Quere L.Ranc P.-A.Soderstrom M.Sciscio S.Sun S.Vallieres P.Wang W.Yao F.Mathieu P.Audebert J.Fuchs | 2021 | Matter and Radiation at Extremes2021，6，6： | 0 |
| 5 | 复合材料在阿里安上的应用显示文摘本文提出复合材料在阿里安运载器上扩大应用范围的问题。这包括在阿里安运载器第一代到第四代和阿里安5上的应用,所用的材料包括碳纤维增强塑料和玻璃纤维增强塑料。文章阐明了在这方面所取得的进展并提到一些诸如重量、刚度和成本等参数。使用这些材料是对技术的和工业的挑战,这些是值得讨论的。文中给出的精确实例包括:断裂准则、正交各向异性影响、热效应和单位成本与质量控制。文章叙述了在这些方面所做的工作并列举了其结果,但有些问题仍然未能解决;作者建议进一步作短期和长期的工作。 | F.Perez 文隆枝 | 1989 | 国外导弹与航天运载器1989，，11： | 0 |
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