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Electric field dependence of spin qubit in a Si-MOS quantum dot

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Chinese Physics B 2024年第6期33卷 248-253页

作者：马荣龙倪铭周雨晨孔真真王桂磊刘頔罗刚曹刚李海欧郭国平 CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Microelectronics Devices and Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Beij.ng Superstring Academy of Memory Technology Beijing 100176China Hefei national Laboratory University of Science and Technology of ChinaHefei 230088China Origin Quantum Computing Company Limited Hefei 230026China

Valley, the intrinsic feature of silicon, is an inescapable subject in silicon-based quantum computing. At the spin–valley hotspot, both Rabi frequency and state relaxation rate are significantly enhanced. With protection against charge noise, the valley degree of freedom is also conceived to encode a qubit to realize noise-resistant quantum ***, based on the spin qubit composed of one or three electrons, we characterize the intrinsic properties of valley in an isotopically enriched silicon quantum dot(QD) device. For one-electron qubit, we measure two electric-dipole spin resonance(EDSR) signals which are attributed to partial occupation of two valley states. The resonance frequencies of two EDSR signals have opposite electric field dependences. Moreover, we characterize the electric field dependence of the upper valley state based on three-electron qubit experiments. The difference of electric field dependences of the two valleys is 52.02 MHz/V, which is beneficial for tuning qubit frequency to meet different experimental requirements. As an extension of electrical control spin qubits, the opposite electric field dependence is crucial for qubit addressability,individual single-qubit control and two-qubit gate approaches in scalable quantum computing.

关键词： silicon-based quantum computing valley electric-dipole spin resonance

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广告点击率预估的逐层残差交互网络

计算机学报 2024年第3期47卷 575-588页

作者：尹云飞龙连杰黄发良吴开贵重庆大学计算机学院重庆400044 广西人机交互与智能决策重点实验室南宁530100

网络广告费的收取通常是以用户的点击次数来计算的,因此如何准确地预估点击率(CTR)是广告公司十分关心的问题.当前先进水平的方法集中在构建各种高阶特征交互模型来预估CTR,但是高阶特征交互会丢失低阶信息,尤其是丢失原始特征的信息.为... 详细信息

网络广告费的收取通常是以用户的点击次数来计算的,因此如何准确地预估点击率(CTR)是广告公司十分关心的问题.当前先进水平的方法集中在构建各种高阶特征交互模型来预估CTR,但是高阶特征交互会丢失低阶信息,尤其是丢失原始特征的信息.为此,本文提出一个新的逐层残差交互网络,它在每次交互时都考虑原始特征的引导作用,被命名为逐层残差交互网(LRIn).LRIn强调高阶特征交互应该建立在原始特征逐层交互的基础上.n阶特征交互由原始特征与n-1阶特征通过元素积运算得到.进而,本文引入了多尺度方法来设计注意力网络.受逐层交互的影响,注意力网络也被设计成多层,称之为逐层注意力网络.为了将二者结合起来,本文提出将逐层残差交互网络的输出作为逐层注意力网络的权重,由此形成了一种新的双网络训练模型.在多个benchmark数据集上的实验结果表明,LRIn的性能比当前先进的方法在Criteo数据集上平均提高1.24%,在Avazu数据集上平均提高2.16%,在MovieLens-1M数据集上平均提高了1.3%,在Book-Crossing数据集上平均提高了1.27%.

关键词：残差网络逐层特征交互 CTR预估注意力

neoadjuvant nivolumab with or without platinum-doublet chemotherapy based on PD-L1 expression in resectable nSCLC(CTOnG1804):a multicenter open-label phase II study

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Signal Transduction and Targeted Therapy 2024年第1期9卷 249-258页

作者： Si-Yang Liu Song Dong Xue-ning Yang Ri-Qiang Liao Ben-Yuan jiang Qun Wang Xiao-Song Ben gui-Bin Qiao j.n-Tao Lin Hong-Hong Yan Li-Xu Yan Qiang nie Hai-Yan Tu Bin-Chao Wang j.n-ji Yang Qing Zhou Hong-Rui Li Ke Liu Wendy Wu Si-Yang Maggie Liu Wen-Zhao Zhong Yi-long Wu Guangdong Lung Cancer Institute Guangdong Provincial Key Laboratory of Translational Medicine in Lung CancerGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Thoracic Surgery Zhongshan HospitalFudan UniversityShanghaiChina Department of Thoracic Surgery Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Department of Pathology Guangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouChina Fujian Key Laboratory of Advanced Technology for Cancer Screening and Early Diagnosis FuzhouChina Berry Oncology Corporation FuzhouChina Chinese Thoracic Oncology Group(CTOnG) GuangzhouChina Department of Hematology The First Affiliated HospitalJinan UniversityGuangzhouChina

This prospective multicenter phase II study evaluated the clinical efficacy of neoadjuvant nivolumab-exclusive(n)and nivolumab–chemotherapy(n/C)combinations based on PD-L1 *** patients exhibited resectable clinical stage IIA–IIIB(AjCC 8th edition)nSCLC without EGFR/ALK *** received either mono-nivolumab(n)or nivolumab+nabpaclitaxel+carboplatin(n/C)for three cycles based on PD-L1 *** primary endpoint was the major pathological response(MPR).Key secondary endpoints included the pathologic complete response(pCR),objective response rate(ORR),and event-free survival(EFS).Baseline PD-L1 expression and perioperative circulating tumor DnA(ctDnA)status were correlated with pCR and ***-two patients were enrolled,with 46 undergoing *** MPR was 50.0%(26/52),with 25.0%(13/52)achieving pCR,and 16.7%and 66.7%for patients with PD-L1≥50%in n and n/C groups,***(25.0%)patients experienced grade 3 or higher immune-related adverse events during neoadjuvant *** with post-neoadjuvant ctDnA negativity was more likely to have pCR(39.1%)compared with those remained positive(6.7%,odds ratio=6.14,95%CI 0.84-Inf,p=0.077).With a median follow-up of 25.1 months,the 18-month EFS rate was 64.8%(95%CI 51.9–81.0%).For patients with ctDnA–***+,the 18m-EFS rate was 93.8%vs 47.3%(HR,0.15;95%CI 0.04,0.94;p=0.005).Immunochemotherapy may serve as an optimal neoadjuvant treatment even for patients with PD-L1 expression≥50%.ctDnA negativity following neoadjuvant treatment and surgery could help identify superior pathological and survival benefits,which requires further confirmation in a prospective clinical trial(nCT04015778).

关键词： chemotherapy nSCLC treatment

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绿洲灌区增密对水氮减量玉米产量的补偿机制

作物学报 2024年第6期50卷 1616-1627页

作者：王菲儿郭瑶李盼韦金贵樊志龙胡发龙范虹何蔚殷文陈桂平省部共建干旱生境作物学国家重点实验室/甘肃农业大学农学院甘肃兰州730070 西北师范大学生命科学学院甘肃兰州730070

针对河西绿洲灌区水资源短缺、玉米田氮肥施用量高等生产生态问题,在节水减氮条件下,分析增加种植密度补偿水氮减量导致玉米减产的效应,为水氮节约型玉米高效生产提供理论依据与技术支撑。基于2016年布设的裂裂区田间试验,主区为2种灌... 详细信息

针对河西绿洲灌区水资源短缺、玉米田氮肥施用量高等生产生态问题,在节水减氮条件下,分析增加种植密度补偿水氮减量导致玉米减产的效应,为水氮节约型玉米高效生产提供理论依据与技术支撑。基于2016年布设的裂裂区田间试验,主区为2种灌水定额:灌水减量20%(W1,3240 m^(3) hm^(–2))和传统灌水(W2,4050 m^(3) hm^(–2)),裂区为2种施氮量:减量施氮25%(n1,270 kg hm^(–2))和传统施氮(n2,360 kg hm^(–2)),裂裂区为3种玉米密度:传统种植密度(D1,7.50万株hm^(–2))、增密30%(D2,9.75万株hm^(–2))和增密60%(D3,12.00万株hm^(–2)),通过测定2020—2021年玉米籽粒产量和生物产量,分析干物质积累及其分配、转运特征,量化产量构成因素,明确增密对水氮减量玉米产量的补偿效应及机制。研究表明,减水、减氮降低了玉米籽粒产量和生物产量,而增密30%能够补偿因水氮同步减量造成的产量负效应,且维持较高的施氮量有利于玉米增产节水。W1n1D1(减量灌水减量施氮及传统密度)较W2n2D1(对照:传统灌水传统施氮及传统密度)籽粒产量和生物产量分别降低9.1%~15.0%与10.0%~11.0%,但W1n1D2(减量灌水减量施氮及增密30%)与W2n2D1差异不显著。W1n2D2(减量灌水传统施氮及增密30%)较W2n2D1籽粒和生物产量分别提高12.9%~15.4%与6.4%~12.0%。增密30%能够补偿水氮同步减量造成玉米减产的主要原因是W1n1D2能增加玉米穗数,进而提高玉米灌浆初期至成熟期干物质积累量和苗期到大喇叭口期群体生长速率及花前转运率。增密30%在灌水减量和传统施氮条件下促进玉米增产的主要原因是W1n2D2可增加玉米穗数,提高玉米生育期干物质积累量与群体生长速率,促进穗部干物质分配,提高花前转运量、转运率及转运贡献率。因此,增密30%是绿洲灌区水氮同步减量玉米稳产高产的可行措施,是氮肥不减但减水20%玉米节水增产有效举措。

关键词：水氮减量密植玉米产量构成干物质积累干物质分配与转运

Phase composition,conductivity,and sensor properties of cerium-doped indium oxide

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nano Materials Science 2024年第2期6卷 193-200页

作者： M.I.Ikim G.n.Gerasimov V.F.Gromov O.j.Ilegbusi L.I.Trakhtenberg n.n.Semenov Federal Research Center for Chemical Physics of RAS MoscowRussia University of Central Florida OrlandoFLUSA Moscow Institute of Physics and Technology(State University) DolgoprudnyMoscow RegionRussia Lomonosov Moscow State University MoscowRussia

The hydrothermal synthesis of In_(2)O_(3)and CeO_(2)–In_(2)O_(3)is investigated as well as the properties of sensor layers based on these *** the synthesis of In_(2)O_(3),intermediate products In(OH)_(3)and InOOH are formed,which are the precursors of stable cubic(c-In_(2)O_(3))and metastable rhombohedral(rh-In_(2)O_(3))phases,respectively.A transition from c-In_(2)O_(3)to rh-In_(2)O_(3)is observed with the addition of CeO_(2).The introduction of cerium into rh-In_(2)O_(3)results in a decrease in the sensor response to hydrogen,while it increases in composites based on c-In_(2)O_(3).The data on the sensor activity of the composites correlate with XPS results in which CeO_(2)causes a decrease in the concentrations of chemisorbed oxygen and oxygen vacancies in rh-In_(2)O_(3).The reverse situation is observed in composites based on c-In_(2)O_(3).Compared to In_(2)O_(3)and CeO_(2)–In_(2)O_(3)obtained by other methods,the synthesized composites demonstrate maximum response to H_(2)at low temperatures by 70–100℃,and have short response time(0.2–0.5 s),short recovery time(6–7 s),and long-term stability.A model is proposed for the dependence of sensitivity on the direction of electron transfer between In_(2)O_(3)and CeO_(2).

关键词： Cerium oxide Indium oxide nanocomposite Hydrothermal method Cubic phase Rhombohedral phase Sensor response Conductivity Hydrogen Response/recovery time

Association of initial assessment variables and mortality in severe pediatric traumatic brain injury

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World journal of Pediatric Surgery 2024年第2期7卷 125-133页

作者： Katherine C Bergus Kelli n Patterson Lindsey Asti josh Bricker Tariku j Beyene Lauren n Schulz Dana M Schwartz Raj.n K Thakkar Eric A Sribnick Pediatric Surgery Nationwide Children's HospitalColumbusOhioUSA CenterforSurgical Outcomes Research Nationwide Children's HospitalColumbusOhioUSA neurologic Surgery The Ohio State UniversityColumbusOhioUSA neurologic Surgery Nationwide Children's HospitalColumbusOhioUSA

Background Predictive scales have been used to prognosticate long-term outcomes of traumatic brain injury(TBI),but gaps remain in predicting mortality using initial trauma resuscitation *** sought to evaluate the association of clinical variables collected during the initial resuscitation of intubated pediatric severe patients with TBI with in-hospital *** Intubated pediatric trauma patientsj.nuary 2011 to December 2020 were *** between initial trauma resuscitation variables(temperature,pulse,mean arterial blood pressure,GCS score,hemoglobin,international normalized ratio(InR),platelet count,oxygen saturation,end tidal carbon dioxide,blood glucose and pupillary response)and mortality were evaluated with multivariable logistic *** Among 314 patients,median age was 5.5 years(interquartile range(IQR):2.2-12.8),GCS score was 3(IQR:3-6),Head Abbreviated Injury Score(hAIS)was 4(IQR:3-5),and most had a severe(25-49)Injury Severity Score(ISS)(48.7%,153/314).Overall mortality was 26.8%.GCS score,hAIS,ISS,InR,platelet count,and blood glucose were associated with in-hospital mortality(all pnd GCS score increased,the odds of mortality *** 1-point increase in GCS score was associated with a 35%decrease in odds of *** hAIS,InR,and blood glucose increased,the odds of mortality *** each 1.0 unit increase in InR,the odds of mortality increased by 1427%.Conclusions Pediatric patients with severe TBI are at substantial risk for in-hospital *** are needed to examine whether earlier interventions targeting specific parameters of InR and blood glucose impact mortality.

关键词： mortality pediatric traumatic

B(E2) Saturation in the Rare-Earth Region

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Chinese Physics Letters 1997年第5期14卷 340-343页

作者： long gui-lu Department of Physics Tsinghua UniversityBeijing 100084 Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100080

The quadrupole interactions between neutrons and protons are calculated using nilsson+BCS model for the neutron-rich even-even rare-earth *** is used to study the saturation of B(E2)'s in this mass *** neutron numbers at which saturation of B(E2)occurs are calculated for each isotopic *** particular,the calculation suggests that B(E2)saturation may occur in the 2nd half of the 82-126 major shell in erbium and ytterbium.

关键词： B(E2) saturation Rare

Dinitrophenyl-oxadiazole compounds:Design strategy,synthesis,and properties of a series of new melt-cast explosives

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Defence Technology（防务技术） 2024年第5期35卷 100-107页

作者： Bao-long Kuang Ting-wei Wang Cong Li Mou Sun Qamar-un-nisa Tariq Chao Zhang Zhi-ming Xie Zu-jia Lu jian-guo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China China Wuzhou Engineering Group CO. LTD.Beijing 100053China

Melt-cast explosives are the most widely used energetic materials in military composite explosives,researchers have been unremittingly exploring high-energy and insensitive melt-cast *** this work,a series of dinitrophenyl-oxadiazole compounds were designed and *** compounds have an ideal low melting point(80-97℃),good detonation performance(detonation velocity D=6455-6971 m/s,detonation pressure P=18-19 GPa)and extreme insensitive nature(impact sensitivity≥60 j,friction sensitivity>360 n).All these compounds were well characterized by nuclear magnetic resonance,fourier transform infrared spectroscopy,elemental *** 2,3 were unambiguously confirmed by X-ray single crystal diffraction *** a result,their overall properties are superior to traditional melt-cast explosives trinitrotoluene(TnT)and dinitroanisole(DnAn)which may have excellent potential applications in insensitive melt-cast explosives.

关键词： Dinitrophenyl-oxadiazole Melt-cast explosive Low sensitivity

Efficacy of Chinese Medicine Treatment Based on Syndrome Differentiation for Primary Insomnia:A Randomized Placebo Controlled Triple-Blinded Trial

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Chinese journal of Integrative Medicine 2024年第10期30卷 867-876页

作者： XIOnG Zhi-yi LU Ying HE Li-yun ZHAnG Run-shun ZHOU Xue-zhong LI Peng LIU Yan-jiao ZHU jian-gui YAn Shi-yan LIU Bao-yan International Acupuncture and Moxibustion Innovation Institute School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese Medicine Department of Biomedical Data Science Stanford University School of Medicine Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical Sciences Guang'anmen Hospital China Academy of Chinese Medical Sciences Beij.ng jiaotong University School of Computer and Information Technology Beij.ng Xicheng District Community Healthcare Center China Academy of Chinese Medical Sciences

Objective: To assess efficacy of Chinese medicine(CM) on insomnia considering characteristics of treatment based on syndrome differentiation. Methods: A total of 116 participants aged 18 to 65 years with moderate and severe primary insomnia were randomized to the placebo(n=20) or the CM group(n=96) for a 4-week treatment and a 4-week follow-up. Three CM clinicians independently prescribed treatments for each patient based on syndromes differentiation. The primary outcome was change in total sleep time(TST) from baseline. Secondary endpoints included sleep onset latency(SOL), wake time after sleep onset(WASO), sleep efficiency, Pittsburgh Sleep Quality Index(PSQI) and CM symptoms. Results: The CM group had an average 0.6 h more(95% confidence interval(CI): 0.3–0.9, Pnd 34.1%(10.3%–58.0%, P=0.005) more patients beyond 0.5 h TST increment than that of the placebo group. PSQI was changed –3.3(–3.8 to –2.7) in the CM group, a –2.0(–3.2 to –0.8, Pnce from the placebo group. The CM symptom score in the CM group decreased –2.0(–3.3 to –0.7, P=0.003) more than the placebo group. SOL and WASO changes were not significantly different between groups. The analysis of prescriptions by these clinicians revealed blood deficiency and Liver stagnation as the most common syndromes. Prescriptions for these clinicians displayed relative stability, while the herbs varied. All adverse events were mild and were not related to study treatment. Conclusions: CM treatment based on syndrome differentiation can increase TST and improve sleep quality of primary insomnia. It is effective and safe for primary insomnia. In future studies, the long-term efficacy validation and the exploratory of eutherapeutic clinicians' fixed herb formulas should be addressed.(Registration no. nCT01613183)

关键词： Chinese medicine primary insomnia randomized controlled trial syndrome differentiation