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业主 1

传输性能分析模型 1

分数阶系统;稳定性;中立时滞;鲁棒性;饱和性 1

区间关联函数 1

区间可拓评价 1

区间距 1

参与约束 1

多用户干扰 1

大视场 1

委托代理 1

工程师 1

工程监理 1

海豚哨音;改进Merkle哈希树;安全水声通信(UWAC) 1

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片上网络;路由算法;拥塞控制;模糊逻辑 1

现场可编程门阵列(FPGA);泄漏功率;电源门控;晶体管级电路设计 1

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碳纳米管场效应晶体管(CNTFET);优化算法;基于非支配排序的遗传算法II(NSGA-II);栅极扩散输入(GDI);近似计算 1

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Association of metabolic syndrome with arterial compliance in children and adolescents

ZHANG Li, MI Jie, LI Ming, JIANG Benyu

《医学前沿(英文)》 2007年 第1卷 第1期   页码 68-73 doi: 10.1007/s11684-007-0014-6

摘要: The association of metabolic syndrome (MS) with arterial compliance in children and adolescents was explored. 337 subjects (188 men and 149 women) aged 6 18 (10.95?3.01) years, out of Beijing Child Metabolic Syndrome Study , were divided into three case groups (one component, two components, three & more components of MS) and one control group based on the Cook s MS definition in children and adolescents. Measurements including anthropometry, blood pressure, fasting plasma glucose and insulin, serum lipid profile were done. Homeostasis model assessment for insulin resistance (HOMA-IR) index was calculated for estimating individual insulin resistance. Arterial compliance was measured using digital pulse wave analyzing method from the pulse trace machine (Micro medical, London), and then the stiffness index (SI) was determined. The mean value of SI in MS group was significant higher than that in control group [(7.69?1.63) vs (6.25?0.86) m/s, <0.01]. With the increase of the clustering of MS components, SI and HOMA-IR were gradually increased. After taking account of gender, age and pubertal development, the partial correlation analysis showed that the amount of components of MS and HOMA-IR were positively correlated with SI (both values were less than 0.05). The arterial compliance of MS group was significantly lowered in children and adolescents, and with the increase of the clustering of MS components, arterial compliance was gradually decreased. It was suggested that arterial compliance assessment in children and adolescents was important for early prevention of cardiovascular diseases.

关键词: compliance assessment     correlation analysis     cardiovascular     clustering     HOMA-IR    

区域水环境质量的区间可拓评价方法及应用

胡宝清

《中国工程科学》 2001年 第3卷 第6期   页码 53-56

摘要:

在区间与区间之距——IR距概念的基础上给出了相应的可拓评价方法——区间可拓评价方法,并在区域水环境质量评价中给出实例。

关键词: 区间距     区间关联函数     区间可拓评价    

Recent advances in myeloid-derived suppressor cell biology

Mahmoud Mohammad Yaseen, Nizar Mohammad Abuharfeil, Homa Darmani, Ammar Daoud

《医学前沿(英文)》 2021年 第15卷 第2期   页码 232-251 doi: 10.1007/s11684-020-0797-2

摘要: In recent years, studying the role of myeloid-derived suppressor cells (MDSCs) in many pathological inflammatory conditions has become a very active research area. Although the role of MDSCs in cancer is relatively well established, their role in non-cancerous pathological conditions remains in its infancy resulting in much confusion. Our objectives in this review are to address some recent advances in MDSC research in order to minimize such confusion and to provide an insight into their function in the context of other diseases. The following topics will be specifically focused upon: (1) definition and characterization of MDSCs; (2) whether all MDSC populations consist of immature cells; (3) technical issues in MDSC isolation, estimation and characterization; (4) the origin of MDSCs and their anatomical distribution in health and disease; (5) mediators of MDSC expansion and accumulation; (6) factors that determine the expansion of one MDSC population over the other; (7) the Yin and Yang roles of MDSCs. Moreover, the functions of MDSCs will be addressed throughout the text.

关键词: non-human primates (rhesus macaques)     myeloid-derived pro-inflammatory cells (MDPCs)     autoimmune disorders     alloimmune responses     pregnancy     mature MDSCs     multiple sclerosis     Yin-Yang law of MDSCs    

工程监理委托代理关系中激励约束与参与约束的研究

秦旋

《中国工程科学》 2007年 第9卷 第4期   页码 45-49

摘要:

基于委托-代理理论对工程监理委托-代理关系中的激励约束与参与约束进行若干拓展研究,与参 与约束(IR)相比,激励相容约束(IC)更为重要,

关键词: 工程监理     业主     工程师     委托代理     激励相容约束     参与约束    

用于设计量子点元胞自动机算术电路的可扩展 1 位全加器 Research Article

Hamideh KHAJEHNASIR-JAHROMI, Pooya TORKZADEH, Massoud DOUSTI

《信息与电子工程前沿(英文)》 2022年 第23卷 第8期   页码 1264-1276 doi: 10.1631/FITEE.2100287

摘要: 近年来,在纳米尺度上使用互补金属氧化物半导体(CMOS)技术设计逻辑电路面临着各种挑战。漏电流、短效应沟道和高能量耗散是一些亟待解决的问题。量子点元胞自动机(QCA)代表了未来可能替代CMOS的一种合适选择,因为与标准CMOS相比,它消耗的能量微不足道。设计算术电路关键是基于1位全加器的结构。低复杂度的全加器模块有利于开发各种复杂结构。本文介绍了基于单元交互的可扩展1位QCA全加器结构。我们提出的全加器包含QCA设计偏好,例如使用的单元数量少、延迟低和占用面积小。此外,所提结构已扩展到更大的电路,包括4位行波进位加法器(RCA)、4位行波借位减法器(RBS)、加/减电路和2位阵列乘法器。所有设计均使用 QCA Designer-E 2.2版软件进行仿真和验证。该工具可以估计能量消耗以及评估电路的性能。仿真结果表明,所提设计在复杂度、面积、延迟、成本和能量消耗方面都是有效的。

关键词: 量子点元胞自动机(QCA);全加器;行波进位加法器(RCA);加/减电路;乘数    

量子点细胞自动机中四值逻辑门的设计与模拟新概念 Research Articles

Alireza NAVIDI1, Reza SABBAGHI-NADOOSHAN2, Massoud DOUSTI1

《信息与电子工程前沿(英文)》 2021年 第22卷 第11期   页码 1441-1550 doi: 10.1631/FITEE.2000590

摘要: 量子点细胞自动机(QCA)等新技术已展现出一些深亚微米标准互补金属氧化物半导体无法提供的显著特性。用QCA进行系统建模和设计多值逻辑门,可使复杂逻辑电路设计更加便捷。本文提出“四值QCA(QQCA)”新概念。该概念已在本团队专为四值QCA模型开发的量子点细胞自动模拟器(QCASim)中设定。设计了基本四值QCA逻辑门,如MIN、MAX和不同类型反相器(SQI,PQI,NQI和IQI),并通过QCASim验证。本文将例示QCASim如何通过其方便的CAD工具集快速而准确地工作。采用所设计的主要门电路设计了一个1×4译码器。基于QQCA设计的电路,取得最小延迟、最小面积和最低复杂度。将QQCA主要的逻辑门与基于碳纳米管场效应晶体管(CNFET)的四值门进行比较,结果表明本文所设计的电路具有更小延迟和更低能耗。

关键词: 量子点细胞自动机(QCA);四值逻辑;量子点细胞自动模拟器(QCASim);四值QCA(QQCA);四值译码器;四值门    

Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective CO electrolysis

《化学科学与工程前沿(英文)》 2022年 第16卷 第12期   页码 1772-1781 doi: 10.1007/s11705-022-2197-4

摘要: Unlocking of the extremely inert C=O bond during electrochemical CO2 reduction demands subtle regulation on a key “resource”, protons, necessary for intermediate conversion but also readily trapped in water splitting, which is still challenging for developing efficient single-atom catalysts limited by their structural simplicity usually incompetent to handle this task. Incorporation of extra functional units should be viable. Herein, a proton deployment strategy is demonstrated via “atomic and nanostructured iron (A/N-Fe) pairs”, comprising atomically dispersed iron active centers spin-polarized by nanostructured iron carbide ferromagnets, to boost the critical protonation steps. The as-designed catalyst displays a broad window (300 mV) for CO selectivity > 90% (98% maximum), even outperforming numerous cutting-edge M–N–C systems. The well-placed control of proton dynamics by A/N-Fe can promote *COOH/*CO formation and simultaneously suppress H2 evolution, benefiting from the magnetic-proximity-induced exchange splitting (spin polarization) that properly adjusts energy levels of the Fe sites’ d-shells, and further those of the adsorbed intermediates’ antibonding molecular orbitals.

关键词: CO2 electrolysis     single-atom catalysts     spin polarization     proton dynamics     in situ IR spectroscopy     kinetic isotope effect    

A perspective on the promoting effect of Ir and Au on Pd toward the ethanol oxidation reaction in alkaline

S. Y. SHEN, Y. G. GUO, G. H. WEI, L. X. LUO, F. LI, J. L. ZHANG

《能源前沿(英文)》 2018年 第12卷 第4期   页码 501-508 doi: 10.1007/s11708-018-0586-7

摘要: There remain great challenges in developing highly efficient electrocatalysts with both high activity and good stability for the ethanol oxidation reaction in alkaline media. Herein, two architectures of tri-metallic PdIrAu/C electrocatalysts are designed and the promoting effect of Au and Ir on Pd toward the ethanol oxidation reaction (EOR) in alkaline media is investigated in detail. On the one hand, the tri-metallic Pd Au Ir/C electrocatalyst with a solid solution alloy architecture is less active relative to Pd Ir/C and Pd/C while the stabilizing effect of Au leads to both a higher activity and a lower degradation percentage after 3000 cycles of the accelerated degradation test (ADT) on Pd Au Ir/C than those on Pd Ir/C. On the other hand, the tri-metallic Pd Ir@(1/3Au)/C electrocatalyst with a near surface alloy architecture delivers a much higher activity with an improvement up to 50.4% compared to Pd Ir/C. It is speculated that for the tri-metallic Pd Ir@(1/3Au)/C electrocatalyst, certain Au atoms are well designed on surfaces to introduce an electronic modification, thus leading to an anti-poisoning effect and improving the EOR activity.

关键词: fuel cells     catalysts     ethanol oxidation     alkaline media     solid solution alloy     near surface alloy    

Removal of Zn

Feng XUE, Beicheng XIA, Rongrong YING, Shili SHEN, Peng ZHAO

《环境科学与工程前沿(英文)》 2013年 第7卷 第4期   页码 531-538 doi: 10.1007/s11783-013-0506-3

摘要: Biosorption of Zn from aqueous solutions by biomass of was investigated. The removal rates of Zn by under different parameters (e.g., solution pH, bio-sorbent dosage and initial Zn concentration) were studied. The inhibition of ’s biosorption by anionic ligands EDTA (Ethylene Diamine Tetraacetic Acid), acetate and citrate) implied that EDTA and citrate might be used as eluting reagents. Regular and simultaneous solution pH change and light metal ions release after biosorption indicated that an ion exchange mechanism was involved. From FT-IR (Fourier Transform Infrared) spectroscopy, the main functional groups participated in biosorption were found. Biosorption of Zn by could be well described by the Freundlich and Langmuir models. In conclusion, the biomass of showed high potential for the treatment of wastewater containing Zn .

关键词: biosorption     Agaricus bisporus     zinc     ion exchange     FT-IR     isotherms    

基于改进Merkle哈希树的仿生水声通信安全方案 Research Articles

Masoud KAVEH,Abolfazl FALAHATI

《信息与电子工程前沿(英文)》 2021年 第22卷 第7期   页码 1010-1019 doi: 10.1631/FITEE.2000043

摘要: 近来,在传输系统中仿生信号已用于实现具有高信噪比的隐蔽水声通信。高信噪比使得攻击者能实行恶意计划,导致传输系统易受恶意攻击。提出一种基于改进Merkle哈希树的安全方案,能够抵御当前水下攻击,具体包含重放攻击、伪造消息攻击、消息篡改攻击和分析攻击。进行安全性分析,证明所提方案能够抵抗这些类型的攻击。性能评估表明,该方案在能量消耗、通信开销和计算开销方面的效率可满足水声通信的限制要求。

关键词: 海豚哨音;改进Merkle哈希树;安全水声通信(UWAC)    

Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

《环境科学与工程前沿(英文)》 2015年 第9卷 第2期   页码 216-221 doi: 10.1007/s11783-014-0630-8

摘要: The interaction of the fly ash and NaOH, in an open reflux hydrothermal system at 100°C, has been explored by several researchers and formation of fly ash zeolites has been confirmed based on the X-ray diffraction analysis of the residues. However, this method does not reveal much about the characteristic transitions (viz. elemental, electro-negativity and cation exchange capacity) of the residues. In this situation, resorting to Fourier transform-infrared radiation (FT-IR) spectroscopy on the residues obtained from two-stage hydrothermal treatment process, described in this manuscript, appears to be a novel idea to establish transitions in chemical bonds (viz., -Si-OH-Al-, OH-Na, OH-Al-), crystallinity and cation exchange capacity of these residues. Based on extensive studies, it has been demonstrated that FT-IR spectroscopy is extremely useful for 1) detection of chemical bonds in the residues, 2) evaluation of zeolites in the residues and 3) also establishing the superiority of the two-stage interaction of the fly ash with NaOH for synthesizing better fly ash zeolites (viz., Na-P1 and Hydroxysodalte) as compared to those obtained from the conventional single-stage treatment of the fly ash.

关键词: hydrothermal treatment     alkali activation     fly ash zeolites     X-ray diffraction (XRD) and Fourier transform-infrared radiation (FT-IR) spectroscopy    

Research on combustion characteristics of bio-oil from sewage sludge

Rui LI, Baosheng JIN, Xiangru JIA, Zhaoping ZHONG, Gang XIAO, Xufeng FU

《化学科学与工程前沿(英文)》 2009年 第3卷 第2期   页码 161-166 doi: 10.1007/s11705-009-0057-0

摘要: Combustion characteristics of bio-oil from sewage sludge were investigated using thermogravimetry (TG) and Fourier Transform Infrared Spectroscopy (FT-IR) techniques. The combustion process could be divided into two weight loss stages. Light compounds volatilized and were oxidized in the first stage and the heterogeneous combustion between oxygen and heavy compounds happened in the second stage, which were confirmed by FT-IR technique. Most weight loss occurred in the first stage. The effect of heating rate was also studied and higher heating rates were found to facilitate the combustion process. The kinetic parameters of the two stages were calculated and the change of activation energy indicated higher heating rates benefited combustion.

关键词: bio-oil from sewage sludge     fast pyrolysis     combustion characteristics     TG-FT-IR     kinetic    

在现场可编程门阵列中用于降低泄漏功率的动态电源门控 Research Article

Hadi JAHANIRAD

《信息与电子工程前沿(英文)》 2023年 第24卷 第4期   页码 582-598 doi: 10.1631/FITEE.2200084

摘要: 现场可编程门阵列(FPGA)器件由于其低设计成本和可重构性,在电子系统中得到广泛应用。在手持电子系统等电池受限的应用中,低功耗FGPA的需求很大。在现代集成电路技术中,泄漏功率几乎相当于动态功率,因此降低泄漏功率可以显著节省能耗。我们提出一种基于静态随机存取存储器(SRAM)的FPGA高效架构,其中每个模块定义了两种模式(活动模式和休眠模式)。在休眠模式下,模块消耗超低泄漏功率。当模块输出对新输入向量的评估时,模块模式由休眠模式动态改变为活动模式。在产生正确的输出后,该模块返回到休眠模式。所提电路设计在活动模式和休眠模式下都降低了泄漏功耗。通过在FPGA-SPICE软件上实现北卡罗来纳州微电子中心(MCNC)基准电路,将所提出的低泄漏FPGA体系结构与最先进的体系结构进行比较。仿真结果表明,休眠模式下泄漏功耗降低约95%。此外,与以往的最佳设计相比,总功耗(泄漏功耗+动态功耗)降低15%以上。平均面积开销(4.26%)小于其他电源门控设计。

关键词: 现场可编程门阵列(FPGA);泄漏功率;电源门控;晶体管级电路设计    

Erratum to: Efficient keyword search over graph-structured data based on minimal covered Erratum

Asieh Ghanbarpour, Abbas Niknafs, Hassan Naderi,naderi@iust.ac.ir

《信息与电子工程前沿(英文)》 2020年 第21卷 第6期   页码 809-962 doi: 10.1631/FITEE.18e0133

摘要: Unfortunately the second author’s name has been misspelt. It should be read: Abbas NIKNAFS.

Potassium carbonate-based ternary transition temperature mixture (deep eutectic analogues) for CO absorption: Characterizations and DFT analysis

《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1500-9

摘要:

•Addition of hindered amine increased thermal stability and viscosity of TTTM.

关键词: Ternary transition-temperature mixture     FT-IR and thermal stability analysis     Viscosity and correlation study     Eyring’s absolute rate theory     CO2 solubility     Density functional theory (DFT).    

标题 作者 时间 类型 操作

Association of metabolic syndrome with arterial compliance in children and adolescents

ZHANG Li, MI Jie, LI Ming, JIANG Benyu

期刊论文

区域水环境质量的区间可拓评价方法及应用

胡宝清

期刊论文

Recent advances in myeloid-derived suppressor cell biology

Mahmoud Mohammad Yaseen, Nizar Mohammad Abuharfeil, Homa Darmani, Ammar Daoud

期刊论文

工程监理委托代理关系中激励约束与参与约束的研究

秦旋

期刊论文

用于设计量子点元胞自动机算术电路的可扩展 1 位全加器

Hamideh KHAJEHNASIR-JAHROMI, Pooya TORKZADEH, Massoud DOUSTI

期刊论文

量子点细胞自动机中四值逻辑门的设计与模拟新概念

Alireza NAVIDI1, Reza SABBAGHI-NADOOSHAN2, Massoud DOUSTI1

期刊论文

Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective CO electrolysis

期刊论文

A perspective on the promoting effect of Ir and Au on Pd toward the ethanol oxidation reaction in alkaline

S. Y. SHEN, Y. G. GUO, G. H. WEI, L. X. LUO, F. LI, J. L. ZHANG

期刊论文

Removal of Zn

Feng XUE, Beicheng XIA, Rongrong YING, Shili SHEN, Peng ZHAO

期刊论文

基于改进Merkle哈希树的仿生水声通信安全方案

Masoud KAVEH,Abolfazl FALAHATI

期刊论文

Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

期刊论文

Research on combustion characteristics of bio-oil from sewage sludge

Rui LI, Baosheng JIN, Xiangru JIA, Zhaoping ZHONG, Gang XIAO, Xufeng FU

期刊论文

在现场可编程门阵列中用于降低泄漏功率的动态电源门控

Hadi JAHANIRAD

期刊论文

Erratum to: Efficient keyword search over graph-structured data based on minimal covered

Asieh Ghanbarpour, Abbas Niknafs, Hassan Naderi,naderi@iust.ac.ir

期刊论文

Potassium carbonate-based ternary transition temperature mixture (deep eutectic analogues) for CO absorption: Characterizations and DFT analysis

期刊论文