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Moduli of Polarized Calabi–Yau Pairs

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Acta Mathematica Sinica,English Series 2020年第6期36卷 631-637页

作者： jános kollár Chen Yang XU Princeton University Princeton NJ 08544-1000USA MIT CambridgeMA 02139-4307USA

We prove that the irreducible components of the moduli space of polarized Calabi–Yau pairs are projective.

关键词： Polarized Calabi–Yau stable pairs Moduli spaces

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Log-Plurigenera in Stable Families of Surfaces

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Peking Mathematical journal 2018年第1期1卷 109-124页

作者： jános kollár Princeton University PrincetonNJ 08544-1000USA

We study the flatness of log-pluricanonical sheaves on stable families of surfaces.

关键词： Plurigenus Stable surface Semi-log-canonical singularity

Log-Plurigenera in Stable Families

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Peking Mathematical journal 2018年第1期1卷 81-107页

作者： jános kollár Princeton University PrincetonNJ 08544-1000USA

We study the flatness of log-pluricanonical sheaves on stable families of varieties.

关键词： Plurigenus Stable variety Semi-log-canonical singularity

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多项式在无穷远附近可以有多小？

数学译林 2011年第2期30卷 117-133页

作者： jennifer M. johnson jános kollár 陆柱家(译) 李福安(校)

我们给出两个变量的实多项式在无穷远附近和在零点附近的界．此界仅依赖于多项式的次数，其叙述亦简单．

关键词：实多项式无穷远零点

Two examples of surfaces with normal crossing singularities

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Science China Mathematics 2011年第8期54卷 1707-1712页

作者： kollr jános Department of Mathematics Princeton University

This note gives two examples of surfaces with normal crossing *** the first example the canonical ring is not finitely *** the second,the canonical line bundle is not ample but its pull back to the normalization is *** latter answers in the negative a problem left unresolved in Ⅲ.2.6.2 of lments de gometrie algbrique,1961,and raised again by Viehweg.

关键词： singular surface canonical ring ampleness criteria

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Carbon Monoxide as C1 Building Block in Fine Chemical Synthesis

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Chinese journal of Chemistry 2024年第2期42卷 199-221页

作者： rui M.B.Carrilho Mario j.F.Calvete Gabor Mikle Laszlo kollar Mariette M.Pereira University of Coimbra Coimbra Chemistry CentreDepartment of ChemistryRua Larga3004-535 CoimbraPortugal Department of General and Inorganic Chemistry and ELKH-PTE research Groupfor Selective Chemical Syntheses University of PecsIfjusag utja 6H-7624 PecsHungary

Carbon monoxide(CO)has become one of the most relevant and versatile renewable C1 building blocks for chemical synthesis,especially in the fine chemicals industry,due to the development of efficient and selective catalysts for its *** this review,we present a comprehensive critical analysis of the last 10 years literature on the use of CO as a renewable feedstock for fine chemicals *** review is organized by type of catalytic reaction,namely alkene and alkyne carbonylation,hydroformylation,carbonylation of aryl halides,carbonylative cross-coupling and C-H *** examples of the synthesis of relevant building blocks and/or known pharmaceuticals are *** is placed on examples of utilizing CO as the C1 building block in one or more catalytic *** catalyst used and the reaction conditions are consistently presented throughout all of the examples.

关键词： Carbon monoxide Fine chemicals Carbonylation Hydroformylation C-H functionalization

Iterative signal reconstruction of deliberately clipped SMT signals

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Science China(Information Sciences) 2014年第2期57卷 5-17页

作者： kollr Zsolt GAZDA juraj HOrVTH Pter VArGA Lajos KOCUr Duan Budapest University of Technology and Economics Technical University of Koice

Staggered MultiTone(SMT)is a modulation technique showing significantly reduced Adjacent Channel Leakage ratio(ACLr)resulting in a more compact Power Spectrum Density(PSD)for the transmitted signal,than the well-known and already widely adopted Orthogonal Frequency Division Multiple Access(OFDMA)***,the unique spectral properties of an SMT signal could be degraded by a non-linear element(e.g.a Power Amplifier(PA))in the *** baseband clipping can be applied to the transmitted signal,reducing the notable high Peak-to-Average Power ratio(PAPr).The objective of this paper is to give a brief introduction to the SMT scheme,with a special emphasis on deliberate clipping efects and their *** paper introduces two receiver-oriented iterative methods aiming at the restoration of the baseband Bit Error rate(BEr)performance of a non-clipped *** methods are evaluated and compared based on numerical *** paper concludes with the selection of a possible candidate for use in systems applying deliberately clipped SMT signals.

关键词： clipping SMT iterative decoding nonlinear distortion PAPr

Microvascular response to transfusion in elective spine surgery

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世界骨科杂志：英文版 2017年第1期8卷 49-56页

作者： j Matthias Walz Ottokar Stundner Federico P Girardi Bruce A Barton Aimee r koll-Desrosiers Stephen O Heard Stavros G Memtsoudis Department of Anesthesi-ology and Perioperative Medicine UMass Memorial Healthcare Department of Anesthesiology Hospital for Special SurgeryWeill Cornell Medical Center Department of Anesthesiology PerioperativeMedicine and Intensive Care MedicineParacelsus Medical University Department of Orthopedic Surgery Hospital for Special SurgeryWeill Cornell Medical Center Department of Quantitative Health Sciences University of Massachusetts Medical School

AIM To investigate the microvascular(skeletal muscle tissue oxygenation; SmO_2) response to transfusion in patients undergoing elective complex spine *** After IrB approval and written informed consent, 20 patients aged 18 to 85 years of age undergoing > 3level anterior and posterior spine fusion surgery were enrolled in the study. Patients were followed throughout the operative procedure, and for 12 h postoperatively. In addition to standard American Society of Anesthesiologists monitors, invasive measurements including central venous pressure, continual analysis of stroke volume(SV), cardiac output(CO), cardiac index(CI), and stroke volume variability(SVV) was performed. To measure skeletal muscle oxygen saturation(SmO_2) during the study period, a non-invasive adhesive skin sensor based on Near Infrared Spectroscopy was placed over the deltoid muscle for continuous recording of optical spectra. All administration of fluids and blood products followed standard procedures at the Hospital for Special Surgery, without deviation from usual standards of care at the discretion of the Attending Anesthesiologist based on individual patient comorbidities, hemodynamic status, and laboratory data. Time stamps were collected for administration of colloids and blood products, to allow for analysis of SmO_2 immediately before, during, and after administration of these fluids, and to allow for analysis of hemodynamic data around the same time points. Hemodynamic and oxygenation variables were collected continuously throughout the surgery, including heart rate, blood pressure, mean arterial pressure, SV, CO, CI, SVV, and SmO_2. Bivariate analyses were conducted to examine the potential associations between the outcome of interest, SmO_2, and each hemodynamic parameter measured using Pearson's correlation coeffi-cient, both for the overall cohort and within-patients individually. The association between receipt of packed red blood cells and SmO_2 was performed by runni

关键词： Transfusion Complex spine surgery Near infrared spectroscopy Microvascular blood flow Hemodynamic monitoring

光纤技术构建“绿色IT”未来——网络传输基础设施正成为营造“绿色数据中心”的核心要素

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智能建筑与城市信息 2008年第7期 106-108页

作者： Andreas koll 康宁光缆系统(上海)有限公司

由于全球气候变暖,工业化国家必须以负责任的态度大幅度削减现有能源和资源消耗量。2008年欧洲最大的IT展会CeBIT开幕,"绿色IT"成为中心主题。康宁光缆系统着眼于未来,研究开发出具有显著节能环保特性的光缆产品,明确了未来15年的技术... 详细信息

由于全球气候变暖,工业化国家必须以负责任的态度大幅度削减现有能源和资源消耗量。2008年欧洲最大的IT展会CeBIT开幕,"绿色IT"成为中心主题。康宁光缆系统着眼于未来,研究开发出具有显著节能环保特性的光缆产品,明确了未来15年的技术发展方向。据一项针对IDC的研究,全球在未来5年将新建数据中心约120万平方米;仅在欧洲就将扩建87万平方米。这要消耗245万千瓦的电力能源,也就是说,至少需要新建四座60万千瓦装机容量的燃煤电厂或三座86万千瓦装机容量的核电站作为能源补充。

关键词： CeBIT 传输基础设施数据中心光纤技术康宁光缆系统网络全球气候变暖技术发展方向

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