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Mittag-Leffler稳定性；分数阶；四元数神经网络；脉冲 1

中国公司治理 1

主战坦克 1

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Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale

《环境科学与工程前沿（英文）》 2023年 第17卷 第3期 doi: 10.1007/s11783-023-1636-x

摘要：

● Environmental parameters affected functional bacteria and network associations.

关键词： Activated sludge     Bacterial community     Tank-dependence     Network association     Functional bacteria    

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Experimental study on the temperature dependence of ultraviolet absorption cross-sections of sulfur dioxide

ZHANG Shiliang, ZHOU Jie, CHEN Xiaohu

《能源前沿（英文）》 2008年 第2卷 第2期   页码 183-186 doi: 10.1007/s11708-008-0025-2

摘要： The photoabsorption cross-sections of sulfur dioxide were measured in the spectral regions of 200–230 nm and 275–315 nm at 298–415 K, using a grating monochromator with a resolution of 0.2 nm. The discrete absorption cross-section is directly correlated with the number of quantum excited from the base state. The absorption cross-sections at the peaks of discrete bands decreased linearly with the increase of temperature, which corresponded to the decrease in the population of vibrational and rotational transitions from the base level to higher excitation levels. The absorption cross-section peaks decreased linearly when the temperature increased from 298 to 415 K, with relative drops of 74.0% and 75.8% at 200–230 nm and 275–315 nm, respectively. Another distinctive feature of sulfur dioxide absorption spectra in the above two spectral regions was the quasiperiodic structure of the absorption peaks, whose equal wavelength intervals were 1.53 nm and 1.95 nm, respectively. Red and blue shifts were not found at the absorption peak positions.
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中国公司治理的路径依赖——理论与实证分析

邴红艳

《中国工程科学》 2004年 第6卷 第2期   页码 82-87

摘要：

文章在简要回顾路径依赖理论的基础上，运用公司治理路径依赖模型：结构驱动路径依赖和制度驱动的路径依赖模型，揭示了公司治理演进过程中路径依赖的作用机理，并针对中国公司治理演进过程中的路径依赖进行了实证分析。

关键词： 中国公司治理     路径依赖     结构驱动路径依赖     制度驱动路径依赖    

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对下一代坦克火力系统发展的思考

孟慎非

《中国工程科学》 2000年 第2卷 第6期   页码 12-15

摘要：

主战坦克仍将是21世纪陆军作战中的主要武器装备之一。根据对当前局势及装甲火力技术背景的分析，世界下一代坦克火力系统技术将在激烈抗争的严峻态势下寻求新的发展，各军事大国都将在对现役装备技术实施挖潜改造的同时，积极探索高新技术支持下火力技术发展的新途径。建议我国在加强基础技术、总体概念、新型机理及结构设计预先研究上做好发展起步工作。

关键词： 坦克     火力系统     发展建议    

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Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

《化学科学与工程前沿（英文）》 2010年 第4卷 第4期   页码 506-514 doi: 10.1007/s11705-010-0508-7

摘要： The Speziale, Sarkar and Gatski Reynolds Stress Model (SSG RSM) is utilized to simulate the fluid dynamics in a full baffled stirred tank with a Rushton turbine impeller. Four levels of grid resolutions are chosen to determine an optimised number of grids for further simulations. CFD model data in terms of the flow field, trailing vortex, and the power number are compared with published experimental results. The comparison shows that the global fluid dynamics throughout the stirred tank and the local characteristics of trailing vortices near the blade tips can be captured by the SSG RSM. The predicted mean velocity components in axial, radial and tangential direction are also in good agreement with experiment data. The power number predicted is quite close to the designed value, which demonstrates that this model can accurately calculate the power number in the stirred tank. Therefore, the simulation by using a combination of SSG RSM and MRF impeller rotational model can accurately model turbulent fluid flow in the stirred tank, and it offers an alternative method for design and optimisation of stirred tanks.

关键词： stirred tank     fluid dynamics     numerical simulation     SSG Reynolds Stress Model     MRF    

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building information modeling (BIM) implementation on design and construction performance: a resource dependence

Dongping CAO, Heng LI, Guangbin WANG

《工程管理前沿（英文）》 2017年 第4卷 第1期   页码 20-34 doi: 10.15302/J-FEM-2017010

摘要： Drawing on resource dependence theory, this paper develops and empirically tests a model for understanding how the implementation of building information modeling (BIM) in construction projects impacts the performance of different project participating organizations through improving their interorganizational collaboration capabilities. Based on two sets of survey data collected from designers and general contractors in BIM-based construction projects in China, the results from partial least squares analysis and bootstrapping mediation test provide clear evidence that BIM-enabled capabilities of information sharing and collaborative decision-making as a whole play a significant role in determining BIM-enabled efficiency and effectiveness benefits for both designers and general contractors. The results further reveal that designers and general contractors benefit from project BIM implementation activities significantly non-equivalently, and that this non-equivalence closely relates to the different roles played by designers and general contractors in BIM-enabled interorganizational resource exchange processes. The findings validate the resource dependence theory perspective of BIM as a boundary spanning tool to manage interorganizational resource dependence in construction projects, and contribute to deepened understandings of how and why project participating organizations benefit differently from the implementation of interorganizational information technologies like BIM.

关键词： building information modeling     interorganizational collaboration     construction project performance     resource dependence theory     partial least squares modeling    

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Jointly modeling the dependence of injury severity and crash size involved in motorcycle crashes in Cambodia

《工程管理前沿（英文）》 doi: 10.1007/s42524-024-0302-8

摘要： Escalating motorcycle crashes present a significant challenge due to the increase in motorcycle registrations and the corresponding increase in mortality rates. This issue is particularly acute in Cambodia, where motorcycles are the primary mode of transportation. In the analysis of motorcycle crashes, two key measures of severity are injury severity and crash size, notably the number of injuries. Typically, these indicators are analyzed independently to understand the impact and consequences of motorcycle accidents. Nevertheless, it is critical to recognize that both observed and unobserved factors may concurrently affect these crash indicators, indicating a possible interrelationship between injury severity and motorcycle crash size. Neglecting the joint occurrence of these variables can result in biased and incorrect parameter estimation. This research contributes to the existing body of knowledge by simultaneously analyzing the factors influencing both injury severity and motorcycle crash size. This approach further distinguishes itself by considering the interdependence between these two results utilizing a copula-based approach. Six models based on copulas were developed using the ordered logit model, which was designed to capture the ordinal nature of injury severity and crash size. By analyzing motorcycle crash data from 2016 in Cambodia, the Frank copula framework was identified as the most effective among the five approaches. The findings revealed that factors such as motorcycle-to-pedestrian collisions, head-on collisions, X junctions, and national roads significantly increase both motorcyclist injury severity and crash size. These insights are valuable for policymakers in formulating targeted strategies to improve motorcycle safety within transportation systems.

关键词： traffic accident     crash     motorcycle     injury severity     crash size    

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Time- and temperature-dependence of compressive and tensile behaviors of polypropylene fiber-reinforced

《结构与土木工程前沿（英文）》 2021年 第15卷 第4期   页码 1025-1037 doi: 10.1007/s11709-021-0741-9

摘要： The understanding of compressive and tensile behaviors of polypropylene fiber-reinforced cemented paste backfill (FR-CPB) play crucial roles in the successful implementation of reinforcement technique in underground mine backfilling operations. However, very limited studies have been performed to gain insight into the evolution of compressive and tensile behaviors and associated mechanical properties of FR-CPB under various curing temperatures from early to advanced ages. Thus, this study aims to investigate the time (7, 28, and 90 d)- and temperature (20°C, 35°C, and 45°C)-dependence of constitutive behavior and mechanical properties of FR-CPB. The obtained results show that pre- and post-failure behaviors of FR-CPB demonstrate strongly curing temperature-dependence from early to advanced ages. Moreover, the pseudo-hardening behavior is sensitive to curing temperature, especially at early ages. Furthermore, the mechanical properties including elastic modulus, material stiffness, strengths, brittleness, cohesion, and internal friction angle of FR-CPB show increasing trends with curing temperature as curing time elapses. Additionally, a predictive model is developed to capture the strong correlation between compressive and tensile strength of FR-CPB. The findings of this study will contribute to the successful implementation of FR-CPB technology.

关键词： cemented paste backfill     fiber reinforcement     constitutive behavior     temperature     tailings    

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Fermentative hydrogen production from beet sugar factory wastewater treatment in a continuous stirred tank

Gefu ZHU, Chaoxiang LIU, Jianzheng LI, Nanqi REN, Lin LIU, Xu HUANG

《环境科学与工程前沿（英文）》 2013年 第7卷 第1期   页码 143-150 doi: 10.1007/s11783-012-0456-1

摘要： A low pH, ethanol-type fermentation process was evaluated for wastewater treatment and bio-hydrogen production from acidic beet sugar factory wastewater in a continuous stirred tank reactor (CSTR) with an effective volume of 9.6 L by anaerobic mixed cultures in this present study. After inoculating with aerobic activated sludge and operating at organic loading rate (OLR) of 12 kgCOD?m ·d , HRT of 8h, and temperature of 35°C for 28 days, the CSTR achieved stable ethanol-type fermentation. When OLR was further increased to 18 kgCOD?m ·d on the 53rd day, ethanol-type fermentation dominant microflora was enhanced. The liquid fermentation products, including volatile fatty acids (VFAs) and ethanol, stabilized at 1493 mg·L in the bioreactor. Effluent pH, oxidation-reduction potential (ORP), and alkalinity ranged at 4.1–4.5, -250–(-290) mV, and 230–260 mgCaCO ?L . The specific hydrogen production rate of anaerobic activated sludge was 0.1 L?gMLVSS ·d and the COD removal efficiency was 45%. The experimental results showed that the CSTR system had good operation stability and microbial activity, which led to high substrate conversion rate and hydrogen production ability.

关键词： fermentative hydrogen production     continuous stirred tank reactor (CSTR)     specific hydrogen production rate     beet sugar factory wastewater     ethanol-type fermentation    

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Phase separation time/temperature dependence of thermoplastics-modified thermosetting systems

ZHANG Xiujuan, XU Yuanze, YI Xiaosu

《化学科学与工程前沿（英文）》 2008年 第2卷 第3期   页码 276-285 doi: 10.1007/s11705-008-0057-5

摘要： The cure-induced phase separation processes of various thermoplastics(TP)-modified thermosetting systems which show upper critical solution temperature (UCST) or lower critical solution temperature (LCST) were studied with emphasis on the temperature dependency of the phase separation time and its potential application in the cure time-temperature processing window. We found that the phase separation time/temperature relationship follows the simple Arrhenius equation. The cure-induced phase separation activation energy (ps) generated from the linear fitting of the Arrhenius equation is irrelevant to the detection means of phase separation time. We also found that (ps) is insensitive to TP content, TP molecular weight and curing rate, but it changes with the cure reaction kinetics and the chemical environment of the systems. With the established phase separation time-temperature dependence relation, we can easily establish the whole cure time-temperature transformation (TTT) diagram with morphology information which is a useful map for the TP/TS composites processing industry.

关键词： separation time-temperature     temperature dependency     cure-induced     separation activation     temperature    

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Breaking the Ni loading-reducibility-dispersion dependence achieved by solid-state co-grinding

《化学科学与工程前沿（英文）》 2024年 第18卷 第12期 doi: 10.1007/s11705-024-2499-9

摘要： The loading-dispersion-reducibility dependence has always been one of the most critical issues in the development of high-performance supported metal catalysts. Herein, up to 40 wt % NiO over ordered mesoporous alumina (OMA) was prepared by co-grinding the hybrid of template-containing OMA and Ni(NO3)2·6H2O. Characterization results confirmed that the OMA mesostructure was still preserved even after loading NiO at a content as high as 40 wt %. More importantly, the reduction extent, dispersion, and average particle size of the Ni/OMA catalysts were maintained at ≥ 91.0%, ~13.5%, and ~4.0–5.0 nm, respectively, when the NiO loading was increased from 20 to 40 wt %. The catalysts were evaluated for the CO methanation as a model reaction, and the similarly high turnover frequency of 24.0 h–1 was achieved at 300 °C for all of the Ni/OMA catalysts. For the catalyst with the highest NiO loading of 40 wt % (40Ni/OMA), the low-temperature activity at 300 °C indexed by the space-time yield of methane (over 325.8 molCH4⋅kgcat−1⋅h−1) was achieved, while the catalyst was operated without an observable deactivation for a time on stream of 120 h under severe reaction conditions of 600 °C and a very high gas hourly space velocity of 240000 mL·g–1·h–1. With these significant results, this work paves the way for a rational and controllable design of supported Ni catalysts by breaking the loading-dispersion-reducibility dependence and stabilizing Ni nanoparticles under harsh reaction conditions.

关键词： Ni-supported catalyst     solid-state grinding     metal-support interactions     high Ni loading     high dispersion     CO methanation    

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Recovery of cyanophycin granule polypeptide from activated sludge: carbon source dependence and aggregation-induced

《环境科学与工程前沿（英文）》 2024年 第18卷 第2期 doi: 10.1007/s11783-024-1776-7

摘要：

● Sodium acetate significantly enriched the CGP synthetase-encoding gene.

关键词： Cyanophycin     Polyhydroxyalkanoate     Alginate-like exopolysaccharides     Bioresource recovery     Aggregation-induced luminescence    

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Higher NO production in sequencing batch reactors compared to continuous stirred tank reactors: effect

《环境科学与工程前沿（英文）》 2023年 第17卷 第4期 doi: 10.1007/s11783-023-1650-z

摘要：

● N2O emissions from a denitrifying SBR were 23 times higher than that of the CSTR.

关键词： Denitrifying N2O mitigation     SBR     CSTR     Meta-omics     PHB    

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Flexible resonant tank for a combined converter to achieve an HPS and LED compatible driver

Jin HU,Hui-pin LIN,Zheng-yu LU,Feng-wu ZHOU

《信息与电子工程前沿（英文）》 2015年 第16卷 第8期   页码 679-693 doi: 10.1631/FITEE.1500054

摘要： High pressure sodium (HPS) lamp has been widely used in street lighting applications because of its maturity, reliability, high lighting efficiency, long life-time, and low cost. Light emitting diode (LED) is expected as the next generation lighting source due to its continuously improving luminous efficacy, better color characteristic, and super long life-time. The two lighting sources may coexist in street lighting applications for a long time. A novel HPS and LED compatible driver is proposed which is rather suitable and flexible for driving HPS and LED in street lighting applications. The proposed driver combines the LLC and LCC resonant circuits into a flexible resonant tank. The flexible resonant tank may change to LLC or isolated LCC circuit according to the lighting source. It inherits the traditional HPS and LED drivers’ zero voltage switching (ZVS) characteristics and dimmable function. The design of the proposed flexible resonant tank considers the requirements of both HPS and LED. The experiments of driving HPS and LED on a prototype driver show that the driver can drive the two lighting sources flexibly with high efficiency.

关键词： High pressure sodium (HPS)     Light emitting diode (LED)     Compatible driver     Ballast    

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A full-scale integrated-bioreactor with two zones treating odours from sludge thickening tank and dewatering

Jianwei Liu, Kaixiong Yang, Lin Li, Jingying Zhang

《环境科学与工程前沿（英文）》 2017年 第11卷 第4期 doi: 10.1007/s11783-017-0932-8

摘要： A full-scale integrated-bioreactor consisting of a suspended zone and an immobilized zone was employed to treat the ordours emitted from a wastewater treatment plant. The inlet concentrations of H S and NH were 1.6–38.6 mg·m and 0.1–6.7 mg·m , respectively, while the steady-state outlet concentrations were reduced to 0–2.8 mg·m for H S and 0–0.5 mg·m for NH . Both H S and NH were eliminated effectively by the integrated bioreactor. The removal efficiencies of H S and NH differed between the two zones. Four species of microorganisms related to the degradation of H S and NH were isolated. The characteristics and distributions of the microbes in the bioreactor depended on the inlet concentration of substrates and the micro-environmental conditions in the individual zones. Product analysis indicated that most of the H S was oxidized into sulfate in the immobilized zone but was dissolved into the liquid phase in the suspended zone. A large amount of NH was converted into nitrate and nitrite by nitration in the suspended zone, whereas only a small amount of NH was transferred to the aqueous phase mainly by absorption or chemical neutralization in the immobilized zone. Different microbial populations dominated the individual zones, and the major biodegradation products varied accordingly.

关键词： Biological deodorization     Microbial characteristics     Ammonia     Hydrogen sulfide     Wastewater treatment plant    

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标题 作者 时间 类型 操作

Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale

期刊论文

Experimental study on the temperature dependence of ultraviolet absorption cross-sections of sulfur dioxide

ZHANG Shiliang, ZHOU Jie, CHEN Xiaohu

期刊论文

中国公司治理的路径依赖——理论与实证分析

邴红艳

期刊论文

对下一代坦克火力系统发展的思考

孟慎非

期刊论文

Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

期刊论文

building information modeling (BIM) implementation on design and construction performance: a resource dependence

Dongping CAO, Heng LI, Guangbin WANG

期刊论文

Jointly modeling the dependence of injury severity and crash size involved in motorcycle crashes in Cambodia

期刊论文

Time- and temperature-dependence of compressive and tensile behaviors of polypropylene fiber-reinforced

期刊论文

Fermentative hydrogen production from beet sugar factory wastewater treatment in a continuous stirred tank

Gefu ZHU, Chaoxiang LIU, Jianzheng LI, Nanqi REN, Lin LIU, Xu HUANG

期刊论文

Phase separation time/temperature dependence of thermoplastics-modified thermosetting systems

ZHANG Xiujuan, XU Yuanze, YI Xiaosu

期刊论文

Breaking the Ni loading-reducibility-dispersion dependence achieved by solid-state co-grinding

期刊论文

Recovery of cyanophycin granule polypeptide from activated sludge: carbon source dependence and aggregation-induced

期刊论文

Higher NO production in sequencing batch reactors compared to continuous stirred tank reactors: effect

期刊论文

Flexible resonant tank for a combined converter to achieve an HPS and LED compatible driver

Jin HU,Hui-pin LIN,Zheng-yu LU,Feng-wu ZHOU

期刊论文

A full-scale integrated-bioreactor with two zones treating odours from sludge thickening tank and dewatering

Jianwei Liu, Kaixiong Yang, Lin Li, Jingying Zhang

期刊论文