mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
广州部分大型汽车客运站候车厅空气微生物污染状况

为了解广州市汽车客运站候车厅空气微生物污染状况,笔者于2009年10月18-22日,对广州市5个大型客运站 (以A、B、C、D、E表示)的空气微生物污染状况进行调查.依据客流量f日发送旅客2.3-7.5万人次)、发车量(日发送800~ 2500班次)、占地面积(3~4.6万m~2)、自然通风状况和地理位置(地处交通繁忙地段)等因素,选择广州市的A、B、C、D、E大型客运站的候车厅为监测点.采用自然沉降法,于2009年 10月18-22日8:00、10:00、12:00、14:00、16:00、18:00、20:00,在各个客运站的候车厅设东、西、南、北、中5个采样点,各点均距墙Im,采样高度为1.2 m,分别用直径9 cm的营养琼脂平板、沙氏琼脂平板暴露5 min,盖上皿盖送回实验室检测.营养琼脂平板经37℃培养48 h,沙氏琼脂平板经28℃培养3~5 d.直接计数平板上生长的细菌和霉菌菌落数(个/皿).依据GB/T 18204.1-2000≤公共场所空气微生物检验方法·细菌总数测定>>、GB 9672-1996<<公共交通等候室卫生标准>>中的空气细菌总数≤75个/Ⅲ为合格进行检测与评价.用Excel 2007录人数据,用SPSS 15.0软件包进行方差分析,SNK法进行两两比较,检验水准α=0.05
镍锌铁氧体的X射线荧光光谱分析

用X射线荧光光谱仪测定镍锌软磁铁氧体材料Fe_2O_3、ZnO、NiO、MnO、Co_2O_3、V_2O_5化学成份的含量. 采用合成标样绘制工作曲线, 通过熔剂的高倍理论稀释降低共存元素间复杂的基体变化,分析了镍锌软磁铁氧体材料中元素间的谱线重叠、吸收和增强效应, 理论影响系数法校正元素间吸收和增强效应. 实验表明, 该方法简便快速, 有良好的精密度和准确度, 所得结果与湿法化学分析结果一致
腹肌局部解剖自制模型在实验教学中的应用

腹肌、腹股沟管和腹直肌鞘的局部结构一直是教学中的难点,又有重要的临床意义,比如腹股沟疝修补术,要求手术医生必须清楚腹肌的局部解剖~[1].为了解决这一问题,笔者在实验课堂上现场制作模型,来讲解腹股沟管和腹直肌鞘的局部解剖结构,取得了较好的教学效果
青年猫和老年猫腰髓后索神经纤维超微结构的比较

老年实验动物外周神经的神经纤维明显丢失,轴突萎缩,神经纤维脱髓鞘发生率升高~[3];老年个体感觉运动能力明显衰退,反应潜伏期增长~[2];神经纤维的最大传导速度及平均传导速度明显下降,且有髓神经纤维较无髓神经纤维对衰老更为敏感~[3].神经纤维的生理特性可以依据其直径加以区分,并受神经纤维的微环境、神经纤维髓鞘的形态结构等因素的影响~[4].本课题组前期的研究表明老年猫腰髓白质后索神经纤维明显丢失,并伴有星形胶质细胞的增生~[5],但衰老是否影响神经纤维的形态结构尚不清楚.本研究以猫腰髓后索为研究对象,利用常规电镜,观察比较青年猫和老年猫腰髓后索神经纤维的超微结构,探讨老年个体神经纤维形态结构的改变与其功能衰退的相关性
碱性镀银溶液中光亮剂对阴极极化行为的影响

光亮剂的阴极极化行为与镀层的性能有对应的关系,研究光亮剂的极化行为是辅助筛选光亮剂的一种有效的方法.考察了几种具有代表性的镀银光亮剂的用量及其复配对极化行为的影响.结果表明:含硫主光亮剂去极化;含羟基和磺酸基载体光亮剂增大极化;含硫主光亮剂和含磺酸基载体光亮剂复配有协同作用和起去极化作用
Evaluating Beijing's human carrying capacity from the perspective of water resource constraints

As the demands on limited water resources intensify, concerns are being raised about the human carrying capacity of these resources. However, few researchers have studied the carrying capacity of regional water resources. Beijing, the second-largest city in China, faces a critical water shortage that will limit the city's future development. We developed a method to quantify the carrying capacity of Beijing's water resources by considering water-use structures based on the proportions of water used for agricultural, industrial, and domestic purposes. We defined a reference structure as 45:22:33 (% of total, respectively), an optimized structure as 40:20:40, and an ideal structure as 50:15:35. We also considered four domestic water quotas: 55, 75, 95, and 115 m~3/(person·yr). The urban carrying capacity of 10-12 million was closest to Beijing's actual 2003 population for all three water-use structures with urban domestic water use of 75 m~3/(person·yr). However, after accounting for our underlying assumptions, the adjusted carrying capacity is closer to 5-6 million. Thus, Beijing's population in 2003 was almost twice the adjusted carrying capacity. Based on this result, we discussed the ecological and environmental problems created by Beijing's excessive population and propose measures to mitigate these problems
Application of activated carbon derived from scrap tires for adsorption of Rhodamine B

Activated carbon derived from solid hazardous waste scrap tires was evaluated as a potential adsorbent for cationic dye removal. The adsorption process with respect to operating parameters was investigated to evaluate the adsorption characteristics of the activated pyrolytic tire char (APTC) for Rhodamine B (RhB). Systematic research including equilibrium, kinetics and thermodynamic studies was performed. The results showed that APTC was a potential adsorbent for RhB with a higher adsorption capacity than most adsorbents. Solution pH and temperature exert significant influence while ionic strength showed little effect on the adsorption process. The adsorption equilibrium data obey Langmuir isotherm and the kinetic data were well described by the pseudo second-order kinetic model. The adsorption process followed intra-particle diffusion model with more than one process affecting the adsorption process. Thermodynamic study confirmed that the adsorption was a physisorption process with spontaneous, endothermic and random characteristics
Bacteriological challenges to asbestos cement water distribution pipelines

Asbestos cement (AC) pipes were commonly installed in the drinking water distribution systems from the mid 1920s to the late 1980s. In recent years, an increase in the number of water main breaks has occurred in the AC portions of some pipe networks, which can be partially attributed to the corrosion of the aged pipes. This study evaluated the potential role that microorganisms may have played in the degeneration and failure of AC pipes. In this study, a fresh AC pipe section was collected from the distribution network of the City of Regina, Canada and examined for microbiological activities and growth on inside surfaces of pipe sample. Black slime bacterial growths were found to be attached to inner pipe surfaces and a distinctively fibrous internal coating (patina) with iron oxides was formed over the time. The microbial populations inside the patina and the black slime were tested with BART~(TM) testers. Heterotrophic aerobic bacteria (HAB) and slime forming bacteria (SLYM) dominated in both the black growths and inside the patina. Iron related bacteria, denitrification bacteria and sulfate reducing bacteria were also commonly present. Microbial challenge assays were conducted by submerging the cut segments of the AC pipe into selected bacterial cultures for a period of 10 days under both aerobic and anaerobic environments. Weight changes were determined and the surface morphology was examined for each of the assayed pipe segments. Results indicated that acid producing bacteria, SLYM and HAB could facilitate the pipe weight loss under anaerobic environments
Preparation and characterization of biomimetic adsorbent from poly-3-hydroxybutyrate

Biomimetic adsorbent named as PHBBMA was prepared from lipophilic poly-3-hydroxybutyrate (PHB) by a modified double emulsion solvent evaporation method. PHBBMA, characterized by using scanning electron microscope and nitrogen adsorption/desorption measurements, is porous spherical particles. The characterization with the thermal gravimetric analysis and differential scanning calorimetry, ~1H nuclear magnetic resonance and Fourier transform infrared spectroscopy showed that PHBBMA preparation was a physical process without chemical reaction. The adsorption of PHBBMA for o-nitrochlorobenzene (o-NCB) was fitted better by Langmuir model than by Freundlich model, while the pseudo second-order model fitting was better than the pseudo first-order model fitting. The maximal adsorption capacity of PHBBMA for o-NCB was 57.83 mg/g at 30℃, although its specific surface area (SBET) was only 8.45 m2/g. PHBBMA is a safe and environmental friendly adsorbent with high adsorption capacity because its component is innocuous and biodegradable PHB produced reusing wastes and contaminants, no byproduct can produced, and its ester and hydrocarbyl groups have strong affinity with organochlorine compounds. The further work will focus on the modification and improvement of PHBBMA in order to increase its SBET and adsorption capacity
Mercury distribution and bioaccumulation up the soil-plant-grasshopper-spider food chain in Huludao City, China

The purpose of this study is to investigate total mercury (THg) distribution and its bioaccumulation up the soil-plant-grasshopper-spider in the Huludao City, which is polluted seriously by chlor-alkali and zinc smelting industry in Northeast of China. Results indicated that average THg concentrations in soil, plant leaves, grasshopper Locusta migratoria manilensis and Acrida chinensis, and spider were 0.151, 0.119, 0.167 and 0.134 mg/kg, respectively. THg spatial distribution suggested that most of mercury came from the chlor-alkali plant and the two zinc smelteries. The highest mercury concentration was found in the wings among different grasshoppers' organs. Although spiders are the predatory, THg concentrations in their bodies were not high, and only on the same level as in grasshoppers, which might be due to spiders' special living habits. In the light of the mercury transportation at every stage of the soil-plant-grasshopper-spider food chain, the bioaccumulation factors were 0.03, 0.79-1.11 and 0.80-1.13 respectively. It suggested that mercury biomagnification up terrestrial food chains was not so large and obvious as it was in the aquatic food chain
Total mercury in wild fish in Guizhou reservoirs, China

The health hazard of mercury (Hg) compounds is internationally recognized, and the main pathways for methylmercury (MeHg) intake in humans are through consumption of food, especially fish. Given the large releases of Hg to the environment in China, combined with the fast development of hydropower, this issue deserves attention. Provided similar mobilization pathways of Hg in China as seen in reservoirs in North America and Europe one should expect increased Hg contamination in relation to future hydropower reservoir construction in this country. This study presents total Hg (THg) concentrations in wild fish from six Guizhou reservoirs, China. The THg concentrations in fish were generally low despite high background levels in the bedrock and depositions from local point sources. The over all mean ± SD concentration of THg was (0.066 ± 0.078) μg/g (n = 235). After adjusting for among-reservoir variation in THg, there were significant differences in THg among functional groups of the fish, assumed to reflect trophic levels. Predicted THgconcentration ratios, retrieved from a mixed linear model, between the functional groups were 9:4:4:1 for carnivorous, omnivorous, planktivorous and herbivorous fish. This result indicated that MeHg accumulation may prevail even under circumstances with short food chains as in this Chinese water system. No fish exceeded recommended maximum THg limit for human consumption set by World Health Organization and the Standardization Administration of China (0.5 μg/g fish wet weight (ww)). Only six fish (2.5%) exceeded the maximum THg limit set by US Environmental Protection Agency (0.3 μg/g fish ww)
Features of the PHF8/KIAA1718 histone demethylase

Gene regulation mechanisms in cellular events ranging from development to tumorigenesis target the fundamental unit of chromatin structure, the nucleosome, 146 bp of DNA wrapped around a histone octamer. Covalent modifications of histones play key roles in the function of the genome. Histones are methylated on lysine (K) and arginine (R) residues. Methylation has been shown to occur on five K residues of histone H3 (K4, K9, K27, K36 and K79), and on four R residues (R2, R8, R17 and R26). H4K20 and H4R3 are also methylated [1, 2]. Methylation is a reversible modification regulated by site-specific methyltransferases and demethylases [1]. Demethylases are classified into three groups: peptidylarginine deiminase 4 (PADI 4), lysine-specific demethylase (LSD), and Jumonji C (JmjC)-domain-containing proteins. LSD has two members (LSD1 and LSD2), and removes mono-(me) or di-methyl (me2) groups from H3K4 or H3K9 in an amine oxidase reaction [3]. To date, 98 JmjCdomain-containing proteins have been isolated from fission yeast to humans, and classified into seven groups. They catalyze lysine demethylation through an oxidative reaction that requires iron Fe(II) and a-ketoglutarate (aKG) as cofactors [4]. JMJD6 (Jumonji domain containing 6 protein) is iron and 2-oxoglutarate demethylase of ariginine [5]. Demethylase functions have an impact on gene regulation through the specific histone substrate p of individual demethylases
Embracing the complexity of pre-mRNA splicing

Pre-mRNA splicing is a fundamental process required for the expression of most metazoan genes. It is carried out by the spliceosome, which catalyzes the removal of non-coding intronic sequences to assemble exons into mature mRNAs prior to export and translation. Defects in splicing lead to many human genetic diseases [1], and splicing mutations in a number of genes involved in growth control have been implicated in multiple types of cancer [2]. Given the complexity of higher eukaryotic genes and the relatively low level of splice-site conservation, the precision of the splicing machinery in recognizing and pairing splice sites is remarkable. Introns ranging in size from less than 100 up to 100 000 bases are removed efficiently. At the same time, a large number of alternative splicing events are observed between different cell types, developmental stages, and during other biological processes. Of the approximately 25 000 genes encoded by the human genome [3], more than 90% are believed to produce transcripts that are alternatively spliced [4]. Thus, alternative splicing ofpre-mRNAs can lead to the production of multiple protein isoforms from a single pre-mRNA, significantly enriching the proteomic diversity of higher eukaryotic organisms [5]. Because regulation of this process can determine the timing and location in which a particular protein isoform is produced, changes in alternative splicing patterns modulate many cellular activities. This extensive alternative splicing implies a significant flexibility of the spliceosome to identify and process exons within a given pre-mRNA
流动妇女与流动男性的心理健康与社会支持

在本研究中流动妇女的心理健康状况较男性存在较多的问题, 这与已有研究结论一致~[6-8]. 流动男性社会支持总分和客观支持得分明显高于女性, 这与对同为流动人口的海军航空兵的研究结论较接近, 海军航空兵除对支持利用度外, 男性其余因子得分均高于女性~[9]. 而Greenglass指出女性通过与朋友交流感受产生满意感, 报告的社会支持相对较多; 而男性关系技能较差, 支持性关系相对较少~[10]. 中外研究差异的原因可能更多的与中国传统的以男性为本位的性别有关
新手咨询师研究现状及展望(综述)

一个人的职业选择正是自我概念的实现, 而心理咨询师其特殊性或者其培训难点即在于其专业自我概念和个人自我概念的高度统合~[1]. 鉴于心理咨询师行业的特殊性, 研究心理咨询师群体的生涯发展及其培训对理论和实践都具有重要意义. 国外自20世纪 80年代开始陆续出现相关的实证研究, 至今已有一定的积累. 其中新手咨询师(novice counselor)作为咨询师生涯发展的一环~[2], 占据着重要而核心的地位
广州市某河涌流域排水管网损坏普查及分析

通过广州市某河涌排水管道系统损坏普查结果可知,加强排水管网系统的科学、全面、直观的普查与维护,不仅可以及时发现排水系统管网存在的问题,为管理部门科学决策、提高城市市政建设与改造水平提供根本依据,同时也为广州市其他流域排水管网建设乃至国内其他地区类似项目的建设提供参考依据,减少或避免排水管网建设中的重复建设现象,节约工程投资费用,并最终为优化城市环境、改善城市面貌奠定基础
左心疾病合并肺血栓栓塞症如何诊断

左心疾病如高血压、冠心病、心肌病和瓣膜病等伴有心功能不全时可出现活动后胸闷、气短,与肺血栓栓塞症(肺栓塞)的症状相似,当左心疾病合并肺栓塞时,临床医生往往难于发现,容易造成漏诊,延误治疗.本文结合1个病例分析,谈谈左心疾病合并肺栓塞的临床特点,旨在提高肺栓塞诊断水平,减少漏诊
谈医学生涯中部分难忘的病例(七)

例19,病变仅累及心血管系统的马方综合征(Marfan Syndrome)干部,女性53岁,患者于1953年产后(第四胎)发现心脏有杂音,1966年参加体力劳动后发现心慌、气短、全身浮肿,曾诊为"风湿性瓣膜病".1973年查血沉80-110 mm/h.1976年2月因感冒,发生心力衰竭,开始服用强心、利尿剂.1976-05-16服用洋地黄毒甙感恶心、心律不齐疑有洋地黄中毒收入院.查体:身高156公分,体重60公斤,慢性病容,斜卧位,血压 150/50 mmHg(1 mmHg=0.133 kPa),心脏明显向左扩大,心律不齐,心率80次/分,有频发早搏,主动脉瓣区及胸骨左缘3~4肋间有极响亮海鸥鸣样舒张期杂音,向前胸及背部传导,心尖可闻及粗糙舒张期杂音,向腋前传导,双肺有少许湿性? 音,肝在右肋下2 cm,剑突下4 cm,下肢不肿.眼视力正常,无蜘蛛指、趾,入院印象考虑为风湿性瓣膜病
广州辣椒上番茄斑萎病毒属病毒的鉴定

辣椒是一类重要的经济作物,在世界各地广泛种植. 辣椒感染病毒后,对其产量和品质都有较大的影响. 目前可侵染辣椒的病毒至少有45种,其中包括番茄斑萎病毒属Tospovirus的番茄斑萎病毒Tomato spotted wilt virus(TSWV)、凤仙花坏死病毒Impa Uens necrotic spot virus(INSV)、番茄褪绿斑病毒 Tomato chlorosis spot virus(TCSV)以及辣椒褪绿病毒Capsicum, chlorosis virus(CaCV). 该属病毒侵染植株后,植株叶片皱缩畸形,出现褪绿或坏死斑,果实上会产生坏死条纹和斑点等,严重时整个植株矮化、黄化~[1-3]. 近年来在广州地区辣椒作物上发现有环斑、坏死斑等疑似番茄斑萎病毒属病毒侵染后产生的典型的症状,本试验对其中的3个分离物进行了初步研究
MD simulation of a copper rod under thermal shock

In this paper, thermoelastic problem of onedimensional copper rod under thermal shock is simulated using molecular dynamics method by adopting embedded atom method potential. The rod is on axis x, the left outermost surface of which is traction free and the right outermost surface is fixed. Free boundary condition is imposed on the outermost surfaces in direction y and z. The left and right ends of the rod are subjected to hot and cold baths, respectively. Temperature, displacement and stress distributions are obtained along the rod at different moments, which are shown to be limited in the mobile region, indicating that the heat propagation speed is limited rather than infinite. This is consistent with the prediction given by generalized thermoelastic theory. From simulation results we find that the speed of heat conduction is the same as the speed of thermal stress wave. In the present paper, the simulations are conducted using the large-scale atomic/molecular massively parallel simulator and completed visualization software
Nanoparticle nucleation and coagulation in a mixing layer

Numerical simulation of nanoparticle nucleation and coagulation in a mixing layer with sulfuric acid vapor binary system is performed using the large eddy simulation and the direct quadrature method of moment. The distributions of number concentration, volume concentration, and average diameter of nanoparticles are obtained. The results show that the coherent structures have an important effect on the distributions of number concentration, volume concentration and average diameter of nanoparticles via continuously transporting and diffusing the nanoparticles to the area of low particle concentration. In the streamwise direction, the number concentration of nanoparticles decreases, while the volume concentration and the average diameter increase. The distributions of number concentration, volume concentration and average diameter of nanoparticles are spatially inhomogeneous. The characteristic time of nucleation is shorter than that of coagulation. The nucleation takes place more easily in the area of low temperature because where the number concentration of nanoparticles is high, while the intensity of coagulation is mainly affected by the number concentration. Both nucleation and coagulation result in the variation of average diameter of nanoparticles
An Overview of Research and Forecasting on Rainfall Associated with Landfalling Tropical Cyclones

The ability to forecast heavy rainfall associated with landfalling tropical cyclones (LTCs) can be improved with a better understanding of the mechanism of rainfall rates and distributions of LTCs. Research in the area of LTCs has shown that associated heavy rainfall is related closely to mechanisms such as moisture transport, extratropical transition (ET), interaction with monsoon surge, land surface processes or topographic effects, mesoscale convective system activities within the LTC, and boundary layer energy transfer etc.. LTCs interacting with environmental weather systems, especially the westerly trough and mei-yu front, could change the rainfall rate and distribution associated with these mid-latitude weather systems. Recently improved technologies have contributed to advancements within the areas of quantitative precipitation estimation (QPE) and quantitative precipitation forecasting (QPF). More specifically, progress has been due primarily to remote sensing observations and mesoscale numerical models which incorporate advanced assimilation techniques. Such progress may provide the tools necessary to improve rainfall forecasting techniques associated with LTCs in the future
On Multi-Timescale Variability of Temperature in China in Modulated Annual Cycle Reference Frame

The traditional anomaly (TA) reference frame and its corresponding anomaly for a given data span changes with the extension of data length. In this study, the modulated annual cycle (MAC), instead of the widely used climatological mean annual cycle, is used as an alternative reference frame for computing climate anomalies to study the multi-timescale variability of surface air temperature (SAT) in China based on homogenized daily data from 1952 to 2004. The Ensemble Empirical Mode Decomposition (EEMD) method is used to separate daily SAT into a high frequency component, a MAC component, an interannual component, and a decadal-to-trend component. The results show that the EEMD method can reflect historical events reasonably well, indicating its adaptive and temporally local characteristics. It is shown that MAC is a temporally local reference frame and will not be altered over a particular time span by an extension of data length, thereby making it easier for physical interpretation. In the MAC reference frame, the low frequency component is found more suitable for studying the interannual to longer timescale variability (ILV) than a 13-month window running mean, which does not exclude the annual cycle. It is also better than other traditional versions (annual or summer or winter mean) of ILV, which contains a portion of the annual cycle. The analysis reveals that the variability of the annual cycle could be as large as the magnitude of interannual variability. The possible physical causes of different timescale variability of SAT in China are further discussed
Evaluating the Dependence of Vegetation on Climate in an Improved Dynamic Global Vegetation Model

The capability of an improved Dynamic Global Vegetation Model (DGVM) in reproducing the impact of climate on the terrestrial ecosystem is evaluated. The new model incorporates the Community Land Model-DGVM (CLM3.0-DGVM) with a submodel for temperate and boreal shrubs, as well as other revisions such as the "two-leaf' scheme for photosynthesis and the definition of fractional coverage of plant functional types (PFTs). Results show that the revised model may correctly reproduce the global distribution of temperate and boreal shrubs, and improves the model performance with more realistic distribution of different vegetation types. The revised model also correctly reproduces the zonal distributions of vegetation types. In reproducing the dependence of the vegetation distribution on climate conditions, the model shows that the dominant regions for trees, grasses, shrubs, and bare soil are clearly separated by a climate index derived from mean annual precipitation and temperature, in good agreement with the CLM4 surface data. The dominant plant functional type mapping to a two dimensional parameter space of mean annual temperature and precipitation also qualitatively agrees with the results from observations and theoretical ecology studies
Occurrence of double parasitism on black-barred halfbeak fish from the southeast coast of India

A double parasitism (isopod Cymothoidae and copepod Pennellidae) on black-barred halfbeak fish, Hemiramphus far, was recorded from Pazhayar coastal waters (southeast coast of India) during September 2008. This is the first report from this region and the infection is discussed in relation to environmental and biological parameters
Salicylic acid and heat acclimation pretreatment protects Laminaria japonica sporophyte (Phaeophyceae) from heat stress

Possible mediatory roles of heat acclimation and salicylic acid in protecting the sporophyte of marine macroalga Laminaria japonica (Phaeophyceae) from heat stress were studied. Heat stress resulted in oxidative injury in the kelp blades. Under heat stress significant accumulation of hydrogen peroxide (H_2O_2) and malonaldehyde (MDA), a membrane lipid peroxidation product, and a drastic decrease in chlorophyll a content were recorded. Activity of the enzymatic antioxidant system was drastically affected by heat stress. The activity of superoxide dismutase (SOD) was significantly increased while peroxidase (POD), catalase (CAT) and glutathione peroxidase (GPX) were greatly inhibited and, simultaneously, phenylalanine ammonia-lyase was activated while polyphenol oxidase (PPO) was inhibited. Both heat acclimation pretreatment and exogenous application of salicylic acid alleviated oxidative damage in kelp blades. Blades receiving heat acclimation pretreatment and exogenous salicylic acid prior to heat stress exhibited a reduced increase in H202 and MDA content, and a lower reduction in chlorophyll a content. Pretreatment with heat acclimation and salicylic acid elevated activities of SOD, POD, CAT, GPX and PPO. Considering these results collectively, we speculate that the inhibition of antioxidant enzymes is a possible cause of the heat-stress-induced oxidative stress in L. japonica, and enhanced thermotolerance may be associated, at least in part, with the elevated activity of the enzymatic antioxidant system
Ergodicity of a Class of Nonlinear Time Series Models in Random Environment Domain

In this paper, we study the problem of a variety of nonlinear time series model X_(n+1) = T_(Zn+1) (X (n), ≠*,X(n - Zn+1), en+1(Zn+l)) in which {Zn} is a Markov chain with finite state space, and for every state i of the Markov chain, {en(i)} is a sequence of independent and identically distributed random variables. Also, the limit behavior of the sequence {X_n} defined by the above model is investigated. Some new novel results on the underlying models are presented
信任对知识获取的影响机制

本文选取中外合资企业作为研究对象,从合资企业母公司之间的信任关系出发,研究其对中方公司知识获取的影响.通过引入沟通及媒介渠道等中介变量,我们对于合资企业间信任关系对中方公司知识获取的影响机制有了进一步认识