Population sizes and group characteristics of Siberian Crane(Leucogeranus leucogeranus) and Hooded Crane(Grus monacha) in Poyang Lake Wetland

Both the Siberian Crane(Leucogeranus leucogeranus) and Hooded Crane(Grus monacha) have limited population sizes and are considered endangered by domestic Chinese and international agencies.To document the current size of their respective populations and characterize their groups,between October 2012 and April 2013 we undertook fieldwork at four nature reserve areas within the Poyang Lake wetlands.We divided Poyanghu National Nature Reserve(PYH) into the Wucheng(PWC) and Hengfeng areas(PHF),because each are each located in different counties.Our fieldwork showed that the Siberian Crane occurred mainly in PYH(364 in the PHF,158 in the PWC) and the Nanjishan Wetland National Nature Reserve(NJS,with 200 individuals).The Hooded Crane was mainly distributed in PYH(302 in the PHF and 154 in the PWC).Family groups accounted for more than 50% of the total number of groups among both species,with Hooded Cranes forming more family groups than Siberian Cranes.Typically,these groups were formed of two adults with one offspring(Siberian Crane),and two adults with two offspring(Hooded Crane),with the mean family group size of the Siberian Crane and Hooded Crane being respectively 2.65±0.53(n=43) and 3.09±0.86(n=47) individuals per group.The mean collective group size of the Siberian Crane and Hooded Crane included 28.09±24.94(n=23) and 28.94±27.97(n=16) individuals per group,respectively,with the proportion of juveniles among Hooded Cranes being more than double that seen among the Siberian Cranes.

Algae functional group characteristics in reservoirs and lakes with different trophic levels in northwestern semi-humid and semi-arid regions in China

In order to study the differences in algae species and their biomass in water bodies in a region, three reservoirs and two lakes at the center of Guanzhong Plain were chosen to identify algae functional groups, measure biomass, and assess water quality, from January2013 to December 2014. The water bodies represented different trophic levels： one oligotrophic, three mesotrophic, and one eutrophic. Based on the Reynolds’ functional groups, they had 10 groups in common—B, P, D, X1, M, MP, F, S1, J, and G, but the algae biomasses and proportions were different. In the oligotrophic reservoir, functional group B reached a peak biomass of 576 × 104 L-1, which accounted for 31.27%. In the eutrophic lake,functional group D reached a peak biomass of 3227 × 104 L-1, which accounted for only13.38%. When samples collected from other water bodies with similar trophic levels were compared, we found differences in the algae species functional groups. The potential reasons for the differences in algae functional group characteristics in the different water bodies in the region were water temperature and nutritional states.

The grouping characteristics of sea waves in the Shijiu Port

A review concerning the methods of studying and describing wave groups is presented in this paper. After analysing 78 field records collected in the Shijiu Port, China, the measured parameters of wave groups and some factors describing wave groupness and their variations are given. Moreover, these results are compared with those of theory.

Hydrodynamic Characteristics and Sediment Transport of A Tidal River Under Influence of Wading Engineering Groups

By taking the Yong River for example in this paper, based on the multiple measured data during 1957 to 2009, the change process of runoff, tide feature, tidal wave, tidal influx and sediment transport are analyzed. Then a mathematical model is used to reveal the influence mechanism on hydrodynamic characteristics and sediment transport of the wading engineering groups such as a tide gate, a breakwater, reservoirs, bridges and wharves, which were built in different periods. The results showed the hydrodynamic characteristics and sediment transport of the Yong River changed obviously due to the wading engineering groups. The tide gate induced deformation of the tidal wave, obvious reduction of the tidal influx and weakness of the tidal dynamic, decrease of the sediment yield of flood and ebb tide and channel deposition. The breakwater blocked estuarine entrances, resulting in the change of the tidal current and the reduction of the tidal influx in the estuarine area. The large-scale reservoirs gradually made the decrease of the Yong River runoff. The bridge and wharf groups took up cross-section areas, the cumulative affection of which caused the increase of tidal level in the tidal river.

Geochemical Characteristics of Proterozoic Mafic Dykes from the Bomdila Group of Rocks, NE Lesser Himalaya, India

The mafic dykes from the Paleoproterozoic Bomdila Group of metasedimentary rocks,Arunachal Pradesh,NE Lesser Himalaya,India have been analyzed for major and trace elements geochemistry essentially to understand their

Group Decision-making Models on Determining the Importance Ratings of Technical Characteristics

Determining the importance ratings of technical characteristics is a typical group decision-making process. The linguistic-based approach can effectively manage the imprecise and multi-granularity information i;n quality function deployment and facilitate decision-making in deriving the importance ratings. Based on the linguistic weighted averaging （LWA） operator and the linguistic hybrid averaging （LHA） operator, a practical approach is proposed to first aggregate the individual judgments into a collective value for each technical characteristic under linguistic environment, and then measure the deviation degree of linguistic variables to obtain the importance ratings of technical characteristics. A case study shows the application of the proposed method.

Sociodemographic characteristics, cultural biases, and environmental attitudes: An empirical application of grid-group cultural theory in Northwestern China

Natural resource-management studies have become increasingly attentive to the influences of human factors. Among these,cultural biases shape people’s responses to changes in natural resource systems. Several studies have applied grid-group cultural theory to assess the effects of multiple value biases among stakeholders on natural resource management. We developed and administered a questionnaire in the Heihe River Basin(n = 364) in northwestern China to investigate the appropriateness of applying this theory in the Chinese context of natural resource management. The results revealed various cultural biases among the respondents. In descending order of prevalence, these biases were hierarchism(46.98%), individualism(26.65%), egalitarianism(18.96%), and fatalism(2.78%), with the remaining respondents(4.67%) evidencing no obvious bias. Our empirical study revealed respondents’ worldviews and the influence of sociodemographic characteristics on cultural biases, as theoretically posited. Among the variables examined, age had a positive and significant effect across all biases except individualism. The correlation of income to all cultural biases was consistently negative. Only education had a negative and significant effect across all biases. Women were found to adhere to egalitarianism, whereas men adhered to individualism and hierarchism. Thus, grid-group cultural theory was found to be appropriate in the Chinese context, with gender, age, education, and income evidently accounting for cultural biases. Relationships between environmental attitudes and cultural biases conformed with the hypothesis advanced by grid-group cultural theory. This finding may be of value in explaining individuals’ environmental attitudes and facilitating the development and implementation of natural resource-management policies.

福州野生蕉(Musa spp.,AA Group)的发现及其分类学地位的初步确定

本文首次报道了福建省福州野生蕉(Musa spp.,‘AB’Group)的发现、分布、基本生物学特性;同时,根据Simmonds和Shepherd的分类方法,确认福州野生蕉属于AA类群,并初步分析了福州野生蕉的利用价值。

Study on the characteristics of earthquake's impact on cities

Firstly, the impact of historical earthquakes on 34 China province-level capital cities is evaluated by using historical earthquake catalog. The distribution of affected intensity shows, about 53% of cities have even not been affected by earthquake intensity VI, and 44% of cities have been hit by earthquake intensity VII to IX. For most of the cities, occurrence frequency of affected intensity VI is usually higher than that of affected intensity larger than VI, and the value of affected intensity with maximal occurrence frequency may be very different among cities. So both the maximal affected intensity and the affected intensity with maximal occurrence frequency should be taken into account when the prevention seismic intensity needs to be determined. Secondly, considering the incompleteness of records of historical earthquakes, a method of earthquake catalog computer simulation is introduced to study the features of affected intensity of big cities. 69 county-level cities of Fujian Province are selected to be statistical objects. The statistical result shows, for different risk levels the seismic intensity changes greatly among cities, the seismic intensity of 2% probability of exceedance in 50 years can be regarded as the characteristic affected intensity of city, and can be the basis of determining the city special earthquake prevention level and a proper indicator of future earthquakes impact on cities.

优秀高职学生核心素养的基本特征与培育策略——基于305个案例的NVivo质性分析

加强高职学生核心素养培育是提升人才培养质量的重要手段。运用NVivo软件对305名优秀高职学生案例文本质性分析发现,技术技能应用、积极生活态度、担当社会责任是优秀高职学生核心素养的共同特征。基于此,高职学生核心素养的培育策略为:深化劳动意识,贯通技术技能的提升通道;优化自我管理,生成个体成长的内生动力;细化责任担当,筑牢家国情怀的认同纽带;强化人文底蕴,夯实终身发展的文化精神。

Wave Characteristics at the South Part of the Radial Sand Ridges of the Southern Yellow Sea

Based on one-year wave field data measured at the south part of the radial sand ridges of the Southern Yellow Sea, the wave statistical characteristics, wave spectrum and wave group properties are analyzed. The results show that the significant wave height （H1/3） varies from 0.15 to 2.22 m with the average of 0.59 m and the mean wave period （Tmean） varies from 2.06 to 6.82 s with the average of 3.71 s. The percentage of single peak in the wave spectra is 88.6 during the measurement period, in which 36.3% of the waves are pure wind waves and the rest are young swells. The percentage with the significant wave height larger than 1 m is 12.4. The dominant wave directions in the study area are WNW, W, ESE, E and NW. The relationships among the characteristic wave heights, the characteristic wave periods, and the wave spectral parameters are identified. It is found that the tentative spectral model is suitable for the quantitative description of the wave spectrum in the study area, while the run lengths of the wave group estimated from the measured data are generally larger than those in other sea areas.

中国县级领导班子群体特征研究——基于东西部比较分析

面对东西部发展存在的巨大差距,西部地区必须全面提升发展质量,而这离不开作为地区发展“领头羊”的领导班子的引领和推动。现有文献对于领导干部群体特征以及配置结构进行了深入的归纳和探讨,但也有必要比较区域间领导干部整体水平的差异并分析其潜在原因,据此对症下药。比较东西部领导班子的群体特征,对于西部地区领导干部的培养、选拔有一定参考价值。论文运用高层梯队理论,采用分层抽样的方法,在广东省、天津市、陕西省、重庆市获得562名县级党政领导班子的履历信息,从人口统计学特征、教育背景、职业发展经历三个维度进行分析,对比研究东西部地区县级党政领导班子群体特征的共性和差异。本研究利用EXCEL对县级领导班子特征各个指标的变量进行统计分析,通过均值、标准差等数据展示变量的分布结构和特征;利用SPSS21.0对东西部县级领导班子的差异性特征进行分组,通过t检验、卡方检验等呈现数据间的差异性。研究表明,东西部党政领导班子在性别、民族、政治面貌、教育背景等方面呈现出相似的特征,但在籍贯来源、年龄、任职经历、晋升路径等方面呈现出显著差异,西部地区县级领导班子年龄分布呈现“两头多,中间少”、籍贯结构“本地多,外地少”、教育背景“偏人文,轻理工”、“任职经历单一,工作经验同质性高”、自下而上晋升比例更低等明显特征。针对分析结果,建议西部县级党政领导班子要着重加强领导班子协同效能建设、优化领导班子干部队伍结构、完善现代干部任用选拔机制,以及进一步强化领导干部的交流制度。

Analysis of the severe group dust storms in eastern part of Northwest China

Based on the available original dust storm records from 60 meteorological stations, we discussed the identification standard of severe dust storms at a single station and constructed a quite complete time series of severe group dust storms in the eastern part of Northwest China in 1954–2001. The result shows that there were 99 severe group dust storms in this region in recent 48 years. The spatial distribution indicates that the Alax Plateau, most parts of the Ordos Plateau and most parts of the Hexi Corridor are the main areas influenced by severe group dust storms. In addition, the season and the month with the most frequent severe group dust storms are spring and April, accounting for 78.8% and 41.4% of the total events respectively. During the past 48 years the lowest rate of severe group dust storms occurred in the 1990s. Compared with the other 4 decades, on the average, the duration and the affected area of severe group dust storms are relatively short and small during the 1990s. In 2000 and 2001, there were separately 4 severe group dust storms as the higher value after 1983 in the eastern part of Northwest China.

装备制造业创新型高技能人才群体特征和成功经验分析研究

创新型高技能人才是促进装备制造业转型升级的重要支撑力量。通过剖析创新型高技能人才群体特征和发展现状,聚焦以“中华技能大奖”“全国技术能手”为典型的创新型高技能人才成功经验,从个体维度、教育维度、企业维度和社会维度等方面进行全方位分析,并提出加强职业教育和技能培训的宣传与推广、建立完善的人才激励和保障机制、加强产学研合作培养机制的建设、加强创新型高技能人才自身素质和能力的提升以及建立完善的人才评估与反馈机制等策略,以期提高创新型高技能人才的培养质量,满足装备制造业的发展需求,推动行业的持续健康发展。

The Grouping of the Strike-Slip Offset Data and Its Relation With the Seismicity Along Middle Segment of the Xiaojiang Active Fault

The data of the strike-slip offset along the Xiaojiang active fault can be obviously grouped.The groups of small orders of magnitude data within 100 m show clear linear characteristics of increments between 8 m and 12 m,which indicates that the segments of the Xiaojiang active fault is of characteristic seismicity and the distribution of the values of each group indicates that there are smaller earthquakes and creep between two large earthquakes along each segment of the Xiaojiang active fault.The interval between two characteristic large earthquakes can be calculated with the increments for two groups of slip data and the slip rate of the fault.Furthermore,the frequency of smaller earthquakes can also be estimated by comparing the distributions of the displacements of the large earthquakes with the distributions of the values of each group of data.The groups of large slip displacements show that there is close relationship between the records of the displacements of the fault and the changes of the

高职院校教师国际素养的构成要素、发展水平和提升策略——基于全国31所高职院校的实证研究

国际素养是教师专业素养的重要组成部分,是教师有效参与国际化活动、从事国际化教学、开展国际化学术交流的重要基础。实证研究发现,高职院校教师国际素养由“知识”“能力”“态度”3个维度和“国际通识性知识”等7个因子构成;高职院校教师国际素养总体状况尚可,男性教师在“知识”维度及“能力”维度的“服务国际企业能力”因子得分高于女性教师,教学岗位教师国际素养的知识、能力得分高于教学兼管理岗位教师,东部、中部、东北地区教师得分高于西部地区,“双高计划”建设院校教师对待国际化的态度更加积极。政府、院校、教师等主体可以通过探索建立国际素养的培养体系、探索依托实践项目的国际素养培养模式、积极参与项目实践等多种途径,促进教师国际素养发展。

教育家型乡村教师的价值定位、群体特质及培育路径

在全面推进教育强国建设、民族复兴伟业的新征程中,培育教育家型乡村教师旨在追求以人才培养支撑教育强国建设、以特色资源赋能乡村教育振兴、以榜样典范助力乡村教师发展的三重价值。基于教育家精神的时代内涵和乡村教师的特殊职能,教育家型乡村教师需要在价值立场、精神境界和实践智慧三个维度体现六种群体特质,即理想信念、使命担当、高尚师德、乡贤品格、教育智慧、践行能力。为此,教育家型乡村教师的培育可从统筹安排保障性培育制度、协同打造立体式培育体系、精心设计定制化培育内容和显著提升内生型培育效能四个方面搭建路径。

融合多知识点与群体特征的个性化知识推荐方法

个性化知识点推荐是智慧教育中的重要问题,旨在提供个性化学习服务和提升学习效果。现有基于深度知识追踪的推荐方法,难以直接处理包含多知识点的综合性习题。仅依赖学习者自身的知识状态进行推荐,存在数据稀疏和结果单一的问题。提出一种多知识融合深度知识追踪与群体特征协同过滤性的个性化知识点推荐方法,将习题对应的多个知识点视为习题特征,引入多热编码表示习题与知识点间的关系,对学习者知识状态建模;通过考虑目标学习者的知识水平和学习者群体的近邻信息,获得相似学习者,并利用协同过滤算法获取群体学习偏好进行知识点推荐。该方法可以更好地适应多知识点习题推荐,同时挖掘群体学习特征,提升推荐效果。

扩底桩竖向承载特性及群桩效应研究

为探明扩底群桩竖向承载特性,采用扩底桩筏结构,开展单桩(扩径比分别为1.5、2.0、2.5、3.0)和桩筏(扩径比为2)基础静载模型试验,分析其荷载传递规律,并建立桩间距为3.75、4.00、4.50、5.00倍桩直径时扩底桩筏基础有限元模型,研究桩间距对群桩效应影响。结果表明:扩底单桩和扩底桩筏结构荷载沉降曲线均为缓变型;扩底桩极限承载力随扩径比增大而逐渐增大,扩径比2.5~3.0时极限承载力增幅变缓,建议扩底桩扩径比取2.5~3.0;由于桩土共同沉降,桩间土压缩,桩土作用更充分,扩底桩筏基础中心桩侧摩阻力荷载分担比比扩底单桩增大了17.71%;群桩效应系数随桩间距增大而逐渐增大,桩间距为4.5~5.0倍桩直径时群桩效应系数增幅较小,群桩效应较弱,建议扩底桩筏基础桩间距取值不小于4.5倍桩直径。