视觉语法视角下城市形象宣传片互动意义构建研究——以盐城城市形象宣传片“Loving Yancheng”为例

城市形象是公众对一个城市的内在综合实力、外显表象活力和未来发展前景的具体感知、总体看法和综合评价,反映了城市总体的特征和风格。近年来,盐城市政府对城市发展规划、投资环境、生态环境、城市精神等方面加大了宣传,积极打造盐城国际生态城市形象。从视觉语法角度出发,对盐城城市形象宣传片“Loving Yancheng”中视觉模态进行分析,以探究该宣传片中视觉模态互动意义的构建策略。

Exploration of Nature Education Path for Teenagers:A Case Study of Yancheng Wetland Nature Education Based on the World Natural Heritage Site

Nature education is the trend of the current social development.By gradually improving the awareness of ecological civilization among the whole people,the achievements in ecological civilization are jointly built and shared by the whole people.Yancheng Yellow Sea Wetland is a characteristic natural resource and the name card of Yancheng City,and also an important part of the natural education of teenagers in Yancheng.As one of the main resources of nature education in Yancheng,the Yellow Sea Wetland World Natural Heritage resources play a more important role in the cultivation of youth ecological civilization values and legal awareness of environmental protection.Based on the protection and utilization of the Yellow Sea Wetland World Natural Heritage resources,this paper explores the methods and approaches of nature education for teenagers in Yancheng.

Influence of Artificial Cofferdam and Spartina alterniflora Expansion on Evolution of Suaeda salsa Marsh in Yancheng Coastal Wetland of East China

Suaeda salsa is an important local species in the intertidal beach of the Western Pacific coast. However,under the artificial cofferdam and Spartina alterniflora expansion,Suaeda marsh has degraded seriously. Therefore,using Yancheng Nature Reserve as a case study area,taking ETM+images in 2000,2006 and 2011 as the basic data sources,we revealed the evolution characteristics of Salsa marsh which was impacted. The research results are as follows. From 2000 to 2011,Salsa marsh area in the artificial area tempestuously degraded,decreasing by 87. 158%,more than 22% than those in the natural area. The landscape was fragmentized. Landscape polymerization degree index dropped from 95. 780 to 65. 455,more than 16% than those in the natural area. The mean patch area fell down to 21. 429 ha from 389. 333 ha,more than 11% that in the natural area. Compared to the steady change in natural conditions,the area was reduced by 118. 167 ha/a from 2000 to 2006,while during 2006-2011,it was only 51. 500 ha/a in artificial area. As for spatial change of landscape,in artificial area,the Salsa marsh centroid moved forward to the southeast with 666. 350 m,but that in natural area moved forward to the north with 1 042. 710 m from 2000 to 2006. From 2006 to 2011,the centroid moved forward to east and north respectively. Artificial cofferdam transformed the area into freshwater ecosystem,and meanwhile the freshwater was beneficial to Reed marsh. During 2000 to 2006,in the artificial area,539 ha Salsa marsh controlled by cofferdam transferred into reed marsh and aquaculture ponds,of which the transformation rate was nearly 4% higher than that in natural area. From 2006 to 2011,178 ha Salsa marsh was transferred into reed marsh,the transformation rate was 20% higher than that in natural area. With rapid spreading and strong competition of Spartina species,the coastal wetland has formed the pattern of " Salsa – Spartina marshes". From 2000 to 2006,in artificial area,15. 24% of Salsa marsh was transferred into Spartina marsh,of which the transformation rate was13% higher than that in natural area. And from 2006 to 2011,30. 07% Salsa marsh was replaced by the Spartina marsh in artificial area,the rate was almost 10% higher than that in the natural area.

Comparative Analysis on Activity Patterns of CG between Lianyungang and Yancheng

[Objective] The reseamh aimed to contrast and analyze CG activity rules in Lianyungang and Yancheng. [Method] By using lightning location data, basic characteristics of lightning activities in Lianyungang and Yancheng both located at the eastem coast of Jiangsu were analyzed and contrasted. [Result] CG characteristics in Uanyungang and Yancheng were same, and negative CG was dominant. Monthly change activity rule of CG basically presented single-peak distribution, and peak value appeared in August. Monthly change of the lightning was drastic, and high- occurrence period was both in summer. Daily change trend of CG in the two sites was consistent. High-occurrence period of the lightning was in af- temoon and early morning, and occurrence frequency of the lightning in the morning was less. Spatial distribution of CG in Lianyungang and Yancheng was very uneven. Lightning activity in Lianyungang mainly concentrated in northwest and southeast areas of Donghai County and western area of Guannan County. Especially in Donghai County, it was the area where lightning strike density was the maximum. Lightning strike activity in Yanchang was more concentrated, and mainly concentrated in the west, namely near Jiangying Town and Louwang Town. Distribution characteris- tics of CG intensities in the two sites were same. Waveform changes of the positive CG in the two sites were slower than that of the negative CG, and current intensity concentrated from ＋ 20 to ~ 50 kA. [ Conclusion ] By contrasting and analyzing lightning activity rules in Lianyungang and Yanchang, we could share and complement data in the two cities better, and serve for routine lightning prevention and early-warning better.

A Study on the Development of Cultural Tourism Industry in Yancheng

Culture is an essential condition for the rapid and healthy development of the tourism industry.However,tourism provides a platform for cultural exchange and communication,injecting a strong impetus to the development of the cultural industry.Under the background of the era that both culture and tourism industries have become national strategies,how to promote and realize the combination and interaction of culture and tourism industry is a practical problem that needs to be solved urgently.Based on taking Yancheng salt culture and seashore wetland ecological culture as the case analysis,this article hackles the integration advantages of Yancheng and tries to find out the deficiencies.On the basis of the evaluation and analysis between culture and the differences in the comprehensive development level of tourism industry,this paper discusses the characteristics and mechanism of the combination of culture and tourism industry,proposes a coordinated development pattern of culture and tourism industry,and on this basis provides the corresponding strategies and suggestions of this pattern in Yancheng.

Comparison of Carbon, Nitrogen, and Sulfur in Coastal Wetlands Dominated by Native and Invasive Plants in the Yancheng National Nature Reserve, China

The rapid invasion of the plant Spartina alterniflora in coastal wetland areas can threaten the capacity of their soils to store carbon(C),nitrogen(N),and sulfur(S).In this study,we investigated the spatial and temporal distribution patterns of C,N and S of both soil and(native and invasive)plants in four typical coastal wetlands in the core area of the Yancheng National Nature Reserve,China.The results show that the invasive S.alterniflora greatly influenced soil properties and increased soil C,N and S storage capacity:the stock(mean±standard error)of soil organic carbon(SOC,(3.56±0.36)kg/m^3),total nitrogen(TN,(0.43±0.02)kg/m^3),and total sulfur(TS,(0.69±0.11)kg/m^3)in the S.alterniflora marsh exceeded those in the adjacent bare mudflat,Suaeda salsa marsh,and Phragmites australis marsh.Because of its greater biomass,plant C((1193.7±133.6)g/m^2),N((18.8±2.4)g/m^2),and S((9.4±1.5)g/m^2)storage of S.alterniflora was also larger than those of co-occurring native plants.More biogenic elements circulated in the soil-plant system of the S.alterniflora marsh,and their spatial and temporal distribution patterns were also changed by the S.alterniflora invasion.Soil properties changed by S.alterniflora’s invasion thereby indirectly affected the accumulation of soil C,N and S in this wetland ecosystem.The SOC,TN,and TS contents were positively correlated with soil electrical conductivity and moisture,but negatively correlated with the pH and bulk density of soil.Together,these results indicate that S.alterniflora invasion altered ecosystem processes,resulted in changes in net primary production and litter decomposition,and increased the soil C,N and S storage capacity in the invaded ecosystems in comparison to those with native tallgrass communities in the coastal wetlands of East China.

Expansion and Management Implications of Invasive Alien Spartina alterniflora in Yancheng Salt Marshes, China

Improved understanding of the spatial dynamics of invasive plant species is critical for effective land management and control of future invasion. The Yancheng National Nature Reserve (YNNR), an internationally important wetland, has the largest distribution of alien Spartina alterniflora in China. This alien plant was intentionally introduced for erosion prevention and dike protection in China. However, it became an aggressive competitor with native salt marsh plants in the coastal regions in China. High resolution imagery, SPOT-5, was used to map plant communities including invasive species in the south core zone of YNNR with the natural ecosystem of salt marshes in 2003, 2005 and 2008. The fuzzy set assessment method significantly improved the classification accuracies over the conventional error matrix, i.e., from 73.8%, 73.5% and 81.4% to 91.5%, 91.6% and 93.4% in 2003, 2005 and 2008, respectively. It shows a great potential for mapping invasive plant species. Phragmites australis and S. alterniflora were the most accurately mapped classes, and sparse and dense Suaeda glauca were the least accurately mapped. From 2003 to 2008, S. alterniflora increased 28.8% from 1664.1 to 2142.6 ha in area size, and more than 2.5 times from 742 to 2608 patches. The highest increase in patch number occurred within the interval between 2001 and 3000 m from the eastern baseline. This increase was dominated by small patches with area less than 200 m2. During the study period, the mean spread width was 405 ± 80.7 m in the original large patch of area over 200 ha. The eastward/seaward spread was distinctively larger than the westward/landward. The results enhance the understanding of alien plant’s invasion patterns and help improve conservation efforts.

A Study on the Integration of Culture Industry and Tourism Industry--A Case Study of Yancheng City in Jiangsu Province

On the basis of the domestic and foreign research results,combined with the reality of Yancheng,this paper puts forward that spatial layout is the key,the development of tourist product is the crux,the brand image is the core,and regional cooperation is the main way of development.

A Study On the Value and Direction of Yancheng Sea Salt Culture in College Students’Ideological and Political Education

Sea Salt Culture is the crystallization of the wisdom of the ancestors and the retention of the history.With the passage of time and the innovation of salt making technology,the connotation of sea salt culture is undergoing changes.In the long process of cultural dissemination,sea salt culture permeates local university campuses and enlightens college students as well.This paper explores the profound connotation of sea salt culture in the new era,probes into the important influence of Sea Salt Culture on the ideological and political education of contemporary college students,and analyzes the practical direction for college students to inherit sea salt culture in the new period,so as to expand the breadth and width of sea salt culture.

A 150-year Isotopic Record of Lead Deposition in Yancheng Coastal Wetland,China

Radioactive markers are useful in dating lead(Pb) deposition patterns from industrialization in sedimentary archives. As a well-known natural reserve in the world, Yancheng coastal wetland in Jiangsu Province is one of areas most sensitive to global sea level change and is located in the most developed and polluted region of China. Two cores were collected in Yancheng wetland in October 2013 and dated using ^(210)Pb and ^(137)Cs radiometric techniques. Sediments in both cores were sectioned into depth bands and examined systematically for dry bulk density, water content, magnetic susceptibility and grain-size. Multiple elements including Pb were also measured using inductively coupled plasma systems. Unsupported ^(210)Pb activities decreased with depth in both of the two cores, and ^(210)Pb chronologies were established(covering 150 years) using the constant rate of supply(CRS) model. The measured Pb contents ranged from 14.97 mg/kg to 29.40 mg/kg with average values of 17.17–22.79 mg/kg, and the Pb fluxes ranged from 41.70 mg/(m^2·yr) to 172.70 mg/(m^2·yr) with averages of 95.59–123.41 mg/(m^2·yr). Temporal variations of Pb flux, enrichment factors and Pb isotopes show a gradual and continuous increase over time and clearly reflect increased emissions from anthropogenic activities in the region. The Pb isotopic compositions show that most of Pb deposition in Yancheng wetland is input from natural sources by water flows and has the same levels of Pb as in the surface sediment of the Yangtze River and the Pacific mineral aerosol. We also stress the anthropogenic Pb contribution in Yangcheng wetland sediment and the reason of our Pb isotopes not showing anthropogenic signature is likely the instability of anthropogenic Pb in high Fe/Mn oxide conditions. Therefore, more attention should be paid to current local pollution problems, and society should take action to seek a balance between economic development and environmental protection.

MoS_(2)/ZnO异质结纳米材料降解亚甲基蓝的光催化性能研究

为了提高ZnO的光转换效率,选用带隙较低的MoS_(2)形成异质结提高ZnO的光催化性能。通过水热法制备ZnO纳米棒,并进一步制备MoS_(2)/ZnO异质结构的纳米复合材料。通过扫描电镜(SEM)、X射线粉末衍射仪(XRD)、固体紫外可见漫反射测试仪(UV-Vis)和紫外可见分光光度计(UV-245)等分析方法对样品的形貌、结构及光学性能等进行表征。结果表明,MoS_(2)/ZnO异质结复合材料呈棒状结构,并由于内建电场存在可有效增强光生载流子的分离效率,进而提高了可见光区的吸收,提高了光催化性能。在模拟太阳光(包含紫外波段)下,60 min时MoS_(2)-15/ZnO纳米复合材料对亚甲基蓝的降解率可达99%,比纯ZnO的降解率提高了10%。

露天煤矿安全-绿色-高效-低碳协同开采技术体系

露天煤矿安全绿色高效低碳开采是全球露天煤矿发展的共识性目标。我国露天煤矿资源开发强度与生态承载力呈现逆向发展特征,我国西北部生态环境脆弱区已成为露天煤炭的主产区,使得露天煤矿开采与生态环境保护成为亟需解决的重要科学问题、生态问题和发展问题。基于我国露天煤矿发展概况、自然条件及主要影响因素,阐释了实现露天煤矿安全-绿色-高效-低碳开采内涵特征与总体架构,针对露天煤矿采前-采中-采后全生命开采周期特点,从安全开采技术、绿色开采技术、高效开采技术、低碳开采技术4个层次,归纳总结了时效边坡控制技术、智能预警决策技术、运输环节新模式、矿区生态建设、相邻矿山协调开采、智能采矿设计、电动矿卡应用以及采矿源头生态减损8项关键技术,明确了露天煤矿安全-绿色-高效-低碳协同开采研究重点工作和方向。在安全-绿色-高效-低碳协同发展措施方面,从强化顶层设计、加快分布实施、深化科研攻关、提升人才培养以及完善标准规范5个方面,提出2025年、2030年、2035年不同阶段需要完成的目标任务。新时期露天煤矿要坚定不移走安全-绿色-高效-低碳发展路径,实现露天煤矿在新时期、新格局下的高质量发展目标。

航空齿轮薄辐板车削加工变形预测及切削参数优化研究

为了满足直升机传动系统轻量化的需求,作为直升机关键零部件的传动齿轮具有薄壁的显著特征,在切削加工中容易出现变形严重和尺寸精度难以保证的问题。本文以高强度中合金渗碳钢齿轮薄辐板为研究对象,基于ABAQUS有限元分析软件,开展了切削加工仿真研究,通过建立三维动态切削仿真模型,分析了加工过程中工件所受的切削力与切削参数之间的关系;并运用静态仿真分析了切削力和夹紧力叠加对薄辐板加工变形的影响,对仿真结果进行了极差分析。最后,通过开展试验对仿真结果进行了验证。结果表明:齿轮薄辐板加工变形量静力学分析显示齿轮辐板轴向变形量最大,径向变形在轮毂处最大;极差分析发现,切削速度为150 m/min、进给量为0.06 mm/r、切削深度为1.8 mm为最优切削参数,最大变形量的预测误差小于10%。

9号道岔区铺设减振垫浮置板的行车安全性及舒适性研究

地铁道岔区在基本轨、尖轨处以及道岔钢轨接头处存在大量钢轨不连续地段,轮轨相互作用强烈,轨道系统振动明显,减振垫浮置板轨道作为一种高等减振措施已应用于地铁线路道岔区。为探究减振垫浮置板应用于9号道岔的适用性,并作为减振地段与普通无砟轨道的过渡段的可行性,以某地铁高架9号道岔为研究对象,建立桥上道岔三维有限元模型,仿真分析地铁B型车在120 km/h直向过岔和30 km/h侧向过岔的情况下,列车的行车安全性、舒适性以及轨下结构形变。对比在9号单开道岔区域设置的2种刚度过渡方式的优劣及其减振效果,较为系统地论证了在9号道岔区域铺设减振垫浮置板的可行性。研究结果表明:1)列车通过铺设减振垫浮置板的9号道岔区域时,浮置板位移极值出现在转辙区域和心轨区域,最大位移出现在尖轨位置,可增大尖轨处单板橡胶垫支承刚度,以保证轨道结构变形均匀;2)列车逆向侧向通过设置过渡段的减振垫浮置板道岔区时,2级过渡方式的车体最大垂向加速度、最大横向加速度、最大脱轨系数、最大轮重减载率、轨道刚度变化率以及减振效果等指标均优于1级过渡方式;3)在道岔区铺设减振垫浮置板,列车直向和侧向通过时的行车安全性和舒适性均能满足相关评价指标,且2级过渡方式更优。研究结果可为后续道岔区减振设计研究提供一定的理论参考。

喷丸工艺参数对718镍基合金表面性能的影响

为全面理解718镍基合金喷丸强化工艺参数的作用,用精确的三维建模对弹丸和基体进行模拟,并结合仿真分析方法考察喷丸尺寸、速度及入射角度对喷丸强化的影响。重点分析了表面粗糙度和残余应力分布,以全面展现喷丸强化的关键特征。结果表明:随弹丸直径和速度的增加,残余应力呈规律性变化,入射角度为0°~10°时对残余应力影响较小,但可轻微降低表面粗糙度。当入射角度从10°增至30°时,喷丸强化效果减弱,同时表面粗糙度增加。这为工艺参数选择提供了重要参考。通过试验验证仿真结果,进一步证实了本研究的准确性和实用性。

复合材料在汽车防撞梁上的应用研究进展

为促进复合材料在汽车构件中的应用,以汽车保险杠防撞梁为例,对复合材料防撞梁的材料、结构设计以及保险杠内部零件连接的研究进展进行综述。简述了碳纤维、玻璃纤维以及天然纤维等复合材料在汽车防撞梁上的研究进展,介绍了不同结构复合材料防撞梁对于耐撞性能的影响,分析了保险杠内部零件不同连接方式的优缺点。最后提出了汽车复合材料防撞梁的未来发展方向,应注重新型复合材料的开发、防撞梁结构的优化设计以及新型连接方式的研究。

基于CAN和REST物联网技术的智能矿山安全检测系统研发

针对矿井安全生产检测数据传输效率低下和共享性差的特点,综合考虑开发成本与工作环境要求,基于CAN(Controller Area Network)和REST(Representational State Transfer)物联网技术提出了智能矿山安全检测方法,设计了矿山安全检测判别程序,采用最大熵模型算法开发了数据信息预警程序。结合CAN总线技术,将多传感器信息进行有机融合并进行安全数据检测,将井下传感器设备相关信息经过判断分析后传输至总机。将所提安全检测方法进行了系统开发,并在淮北某矿进行了应用。结果表明:基于CAN和REST物联网技术的安全检测方法能够实现多点测量,并可随机增减检测设备,可实现数据实时传输和共享,有助于实现矿山安全实时检测。

江苏省高职院校物流管理专业1+X证书实施现状研究

文章综合运用文献研究和调查研究,以首批1+X试点专业领域的物流管理专业为例,对高等职业院校实施1+X证书制度的困境及原因进行了全面细致的调查研究。研究过程中对江苏省高职物流管理专业的学生、老师进行了问卷调查,并结合深度访谈,发现高职院校面临着推行1+X证书制度困境。在此基础上分析了造成高职院校推行1+X证书制度的困难的原因。根据1+X推行困境的原因,提出四个方面的解决策略。高等职业院校实施1+X证书制度有着十分重要的价值,1+X证书制度将推动职业院校的学生就业竞争能力和人才供给能力的提升,职业院校的市场吸引力得到增强,也将推动职业教育深入改革。

乡村振兴视角下盐城市乡村民宿高质量发展策略研究

乡村民宿因其扎根于乡村的自然属性,获得了快速发展和不断升级,已成为助力乡村振兴的有效手段。得益于良好的发展基础,近年来盐城地区乡村民宿发展迅速,但还存在着发展层级差异大,供需两端不够匹配;滞后于国家标准,管理水平有待提高;缺乏集群效应,配套供给有待完善等问题。对此,建议加强顶层设计,统筹推进乡村民宿发展;强化标准管理,提升乡村民宿服务水平;实施联农带农,实现民宿乡村有机融合;注重宣传推介,打造乡村民宿立体品牌,以此推动盐城乡村民宿产业高质量发展。

电化学沉积时间对碱预处理钛合金表面HA涂层的影响

采用碱预处理钛合金表面再电化学沉积的方法,研究了电化学沉积时间对羟基磷灰石(HA)涂层物相、形貌、生物活性及其与钛合金基体间结合强度的影响。结果表明,碱预处理钛合金表面制备的电化学沉积涂层主要由片状HA相组成,电化学沉积时间对涂层物相组成没有影响,但会影响涂层厚度;沉积时间60 min时得到的HA涂层较致密,与基体的结合强度达17.85 MPa。各沉积时间下得到的HA涂层均具有较好的生物活性,在模拟体液(SBF)中,CO_(3)^(2-)置换HA中的PO_(4)^(3-)进入磷灰石中形成类骨磷灰石CHA,呈馒头状,直径7~8μm,且在SBF中浸泡3 d,CHA可铺满HA表面。