基于宗地尺度的建设用地节约集约利用评价和潜力规模测算——以宁夏吴忠市利通区为例

以城市宗地为评价单元,围绕评价目标,从规划用途符合性、土地建设强度、土地利用效益3方面选取评价指标,构建城市建设用地节约集约利用评级指标体系,并通过单因素集成法评价城市用地节约集约利用程度,探究城市发展增量和存量潜力规模及经济价值.结果表明,城市建设用地节约集约利用空间分布不规律;各宗地虽然主要以集约利用为主,但存在一定比例低效用地,且工业用地的低效利用较多;有一定比例的存量用地规模,但开发较困难.

A Novel Lateral Solenoidal On-Chip Integrated Inductor Implemented in Conventional Si Process

A new structure of the on- chip integrated inductors im plem ented in conventional Si process is presented as a lateral solenoid.The fabrication process utilizes a conventional Si technology with standard double- layer m etal- lization.S param eters of the inductors based equivalent circuit are investigated and the inductor parameters are cal- culated from the m easured data.Experimental results are presented on an integrated inductors fabricated in a lateral solenoid type utilizing double m etal layers rather than a single metal layer as used in conventional planar spiral de- vices.Inductors with peak Q of 1.3and inductance value of 2 .2 n H are presented,which are com parable to conven- tional planar spiral inductors.

Novel Substrate pn Junction Isolation for RF Integrated Inductors on Silicon

A new method for reducing the substrate rated losses of integrated spiral inductors is presented.The method is to block the eddy currents induced by spiral inductors by directly forming pn junction isolation in the Si substrate. The substrate pn junction can be realized by using the standard silicon technologies without any additional processing steps.Integrated inductors on silicon are designed and fabricated. S parameters of the inductor based equivalent circuit are investigated and the inductor parameters are calculated.The impacts of the substrate pn junction isolation on the inductor quality factor are studied.The experimental results show that substrate pn junction isolation in certain depth has achieved a significant improvement.At 3GHz,the substrate pn junction isolation increases the inductor quality factor by 40%.

大型建设项目的网络组织集成的影响因素、模型与方法研究

大型建设项目需要众多相关利益主体参加,他们构成了面向机会的、临时性的和虚拟的网络型组织。从这种网络型的组织集成的独特性要求入手进行研究,分析了战略目标、过程集成和资源集成对组织集成的影响,提出这种网络型组织的集成是以项目战略目标为导向,以项目过程集成为核心,受项目资源集成约束,面向战略目标、全部工作和各种资源的全面集成,并在此基础上提出了大型建设项目的网络组织集成的4个方面的内容,以及基于法律与合同关系和基于竞争与合作关系的合作伙伴式的集成方法。

基于多Agent技术的个性化随机慢化机制研究

元胞个体的同质化与单一性,以及模型演化算法的简单性,导致传统元胞自动机(CA)模型忽略参与者个体差异,使用共性化随机慢化概率统一表述随机慢化行为,难以完整反映随机慢化行为的影响因素。本文通过多层次Agent模型中的理想模型和参与者特征模型对随机慢化行为影响因素进行分解,进而通过多Agent协同模型进行随机慢化行为影响因素集成,形成个性化随机慢化机制。引入该机制后,对于个体交通参与者,其随机慢化行为不再由简单、抽象的随机慢化概率涵盖,而是由其独有的个性化的随机慢化机制决定;而对于整个交通系统,由于参与者个体之间的差异性,导致不同参与者随机慢化的机制体现出个性化差异,系统对于随机慢化行为模拟的完整性得到有效增强。

Association of hepatitis C virus infection and diabetes

Epidemiologic studies have suggested a relation between hepatitis C virus (HCV) infection and diabetes mellitus. HCV infection is emerging as a metabolic disease, and diabetes mellitus as a risk factor for HCV infection. However, some data on the prevalence of antibodies to HCV in patients with diabetes are conflicting. These seroprevalence data should be interpreted with caution. Some potential bias may occur in those clinic-based studies that target a specif ic disease group. In this letter we explain some reasons for these conflicting studies.

Abiotic factors in colony formation:effects of nutrition and light on extracellular polysaccharide production and cell aggregates of Microcystis aeruginosa

Colony morphology is important for Microcystis to sustain a competitive advantage in eutrophic lakes. The mechanism of colony formation in Microcystis is currently unclear. Extracellular polysaccharide （EPS） has been reported to play an important role in cell aggregate formation of some phytoplankton. Microcystis aeruginosa was cultivated under varied abiotic conditions, including different nutrient, light, and temperature conditions, to investigate their effects on EPS production and morphological change. The results show that nutrient concentration and light intensity have great effects on EPS production in M. aeruginosa. There was a considerable increase in EPS production after M. aeruginosa was cultivated in adjusted culture conditions similar to those present in the field （28.9 mg C/L, 1.98 mg N/L, 0.65 mg P/L, light intensity： 100 μtmol/（m2.s））. These results indicate that abiotic factors might be one of the triggers for colony formation in Microcystis.

Limb symmetry index in competitive alpine ski racers:Reference values and injury risk identification according to age-related performance levels

Purpose： The aims of this study were to assess differences of limb symmetry index （LSI） in strength- and coordination-related tasks between high-level, competitive, noninjured ski racers of different age-related performance levels and to prospectively assess limb differences as a possible risk factor for traumatic and overuse injury in youth ski racers. Methods： The study （Study 1） included 285 high-level competitive ski racers （125 females, 160 males） of 3 age-related performance levels and based on the school system： 95 youth （10-14 years, secondary modem school）, 107 adolescent （15-19 years, grammar school）, and 83 elite athletes （20-34 years）. To investigate the second aim （Study 2）, 67 of the 95 youth athletes were included and any traumatic or overuse injuries were prospectively recorded over 2 seasons. All athletes performed 4 unilateral tests （strength related： one-leg counter movement jump （OL-CMJ） and one-leg isometric/isokinetic press strength test （OL-ILS）; coordination related： one-leg stability test （OL-ST） and one-leg speedy jump test （OL-SJ））. The LSI was calculated by dividing the dominant leg by the nondominant leg and multiplying by 100. Kruskal-Wallis H tests and binary logistic regression analyses were conducted. Results： There were significant differences between the LSI of the 3 age-related performance-level groups only in the strength-related tests： the OL-CMJ （X^2（2, 285） = 9.09; p = 0.01） and the OL-ILS （X^2（2,285） = 14.79; p 〈 0.01）. The LSI for OL-ILS was found to be a significant risk factor for traumatic injury in youth ski racers （Wald = 7.08; p 〈 0.01）. No significant risk factors were found for overuse injuries. Conclusion： Younger athletes display slightly greater LSI values only in the strength-related tests. The cut-off value of limb differences of 〈 10% for return to sport decisions seems to be appropriate for elite athletes, but for youth and adolescent athletes it has to be critically discussed. It seems to be necessary to define thresholds based on specific performance tasks （strength vs. coordination related） rather than on generalizations, and age-related performance levels must be considered. Limb differences in unilateral leg extension strength represent a significant injury risk factor in youth ski racers.2018 Published by Elsevier B.V. on behalf of Shanghai University of Sport. This is an open access article under the CC BY-NC-ND license. （http：//creativecommons.org/licenses/by-nc-nd/4.0/）.

Chemical characteristics of rainwater in karst rural areas,Guizhou Province, Southwest China

The chemical composition of rainwater has been studied in a karst rural area from September 2012 to August 2013 in Guizhou Province,Southwest China.The results indicated that the VWM value of p H was 5.4,varied from 4.6 to 6.9.Ca^(2+)and NH_4^+were the major cations,and SO_4^(2-)was the dominant anion.Neutralization factors show that the acid was mainly neutralized by Ca^(2+),NH_4^+and Mg^(2+).Investigations of correlation coefficients and enrichment factors revealed that Ca^(2+)and Mg^(2+)were mainly crust origins,and NH_4^+was from agriculture and livestock manure.SO_4^(2-)and NO_3^-were mainly from anthropogenic sources.

Hormones and phenotypic plasticity： Implications for the evolution of integrated adaptive phenotypes

It is generally accepted that taxa exhibit genetic variation in phenotypic plasticity, but many questions remain unan- swered about how divergent plastic responses evolve under dissimilar ecological conditions. Hormones are signaling molecules that act as proximate mediators of phenotype expression by regulating a variety of cellular, physiological, and behavioral re- sponses. Hormones not only change cellular and physiological states but also influence gene expression directly or indirectly, thereby linking environmental conditions to phenotypic development. Studying how hormonal pathways respond to environ- mental variation and how those responses differ between individuals, populations, and species can expand our understanding of the evolution of phenotypic plasticity. Here, we explore the ways that the study of hormone signaling is providing new insights into the underlying proximate bases for individual, population or species variation in plasticity. Using several studies as exem- plars, we examine how a ＇norm of reaction＇ approach can be used in investigations of hormone-mediated plasticity to inform the following： 1） how environmental cues affect the component hormones, receptors and enzymes that comprise any endocrine sig- naling pathway, 2） how genetic and epigenetic variation in endocrine-associated genes can generate variation in plasticity among these diverse components, and 3） how phenotypes mediated by the same hormone can be coupled and decoupled via independent plastic responses of signaling components across target tissues. Future studies that apply approaches such as reaction norms and network modeling to questions concerning how hormones link environmental stimuli to ecologically-relevant phenotypic re- sponses should help unravel how phenotypic plasticity evolves