澳门文学的区域性意义

澳门文学是中国的一个区域文学。它同中国其他区域文学相比,可以说同又不同。同的地方是澳门文学以中华民族文学为底色,带有深刻的民族文化和民族文学的烙印。不同的地方在于澳门区域的特殊性,澳门文学有其独特的发展足迹。从中国文学发展的整体格局来看,缺少澳门文学这个具有独特风貌、独特发展足迹的区域文学,将是不全面的、不完整的。澳门文学具有丰富的区域性意义。

减税降费对数字经济核心产业企业创新的影响研究

减税降费是我国供给侧结构性改革的重要举措,把握不断出台的政策红利对企业而言具有重要意义。文章基于国家统计局公布的《数字经济及其核心产业统计分类(2021)》,科学界定数字经济核心产业企业范围,在此基础上,选择2017—2021年数字经济核心产业上市公司为研究对象,研究减税降费对数字经济核心产业企业创新活动的影响。研究发现:减税降费有助于数字经济核心产业企业提高创新投入,加大创新强度。进一步检验发现,相比于国有数字经济核心产业企业,减税降费对非国有企业创新投入、创新强度更具有促进作用;处于东部和中部地区的数字经济核心产业企业,减税降费对其创新投入的促进作用更明显。因此,政府一方面可以通过实施减税降费措施促进数字经济核心产业企业创新活动,另一方面还需要实施差异化策略推动社会经济协调发展。

湿陷性黄土地区施工管理要点分析

湿陷性黄土物理、力学性质给该地区施工建设工作带来了诸多的危害,所以需要基于地区地质水文情况,和项目自身的建设要求,对整个施工过程进行高标准管理。本文就在此背景下借鉴了某湿陷性黄土地区果蔬垃圾处理厂建设经验,提出了同类地区施工管理的建议。包括需要各单位基于现行规范评价黄土湿陷性,对设计建造风险进行全面评估并采取应对措施,选用适宜的施工工艺进行地基处理,完善上部建筑设施的防水防渗做法,加强施工过程中的质量监测,并做好后续维护养护的指导实施。

基于同质区域分割的高光谱图像混合噪声估计

降低高光谱(Hyperspectral,HS)图像中的噪声以提高图像质量一直是遥感图像处理领域的研究热点,而HS图像带有的混合光电噪声却难于准确估计,为此提出一种基于同性质区域(Homogeneous Region,HR)分割的HS图像混合噪声估计方法。首先结合HS图像的空间和光谱特性进行HR分割,然后在HR内通过多元线性回归(Multiple Linear Regression,MLR)方法去除区域相关性从而得到混合噪声,最后引进比例因子对混合噪声的内部参数进行估计。通过在仿真HS数据和真实AVIRIS数据上进行实验表明,该方法能够有效地进行HR分割,且对混合噪声的估计结果要优于其它传统噪声估计方法。

一种新的基于分裂法的矢量量化算法

提出了一种新的适合于矢量量化技术的码书设计算法 ,它的主要思想是依据等误差准则和分区域收敛性质 ,对满足迭代终止条件的质心区域进行标记 ,以后不再对已标记区域进行迭代 ,每一步迭代执行基于分裂码字的改进LBG算法 .该算法简单 ,能极大地提高训练速度 ,并得到较低的失真 ,而且还适合于并行计算 .

广东邮政在城市投递难度系数设置方面的尝试

增强城市投递段道的精细化管理水平是投递管理方式转型的关键所在。文章介绍了广东邮政在衡量城市投递段道难易方面进行的尝试,从投递密度、投递工具、区域性质、标准地址、报刊流转额五个方面探讨了投递段道难度系数的衡量方法,并证明了该方法的可行性与适用性。

Exterior Quality and Physical Properties of Hongda Tobacco in Yunnan Province

[Objective] The aim was to analyze the exterior quality and physical prop- erties of Hongda Tobacco in Yunnan Province, thus providing references for planting planning, technology and selection of raw materials. [Method] Hongda C3F progenies were chosen from 24 villages and towns in Qujing, Kunming, Baoshan and Dali, and the concerning exterior quality and physical properties were analyzed through cluster analysis. [Result] The openness and width of C3F differed significantly among Qujing, Kunming, Baoshan and Dali. The thickness, stem content, equilibrium moisture con- tent extremely differed, and density and filling power varied significantly. Most physi- cal properties, such as equilibrium moisture content and density, of Dali Hongda were quite different from those in Qujing, Kunming and Baoshan, indicating that Dali Hongda enjoys special characteristics in physical properties. In addition, stem content in east, center and west areas of Yunnan Province differed significantly and Hongda in Yunnan could be classified into four species according to physical property. [Conclusion] The research has laid basis for planting planning, technology and raw mate- rials selection of Hongda tobacco.

A Preliminary Study on the New Activity Features of the Lajishan Mountain Fault Zone in Qinghai Province

The Lajishan Mountain fault zone consists of two NE_protruding arcuate faults, i.e. the northern and southern margin fault of Lajishan Mountain with the fault length of 230km and 220km respectively. The fault zone is located in the large_scale compressional structure zone and tectonic gradient zone in_between the NNW_trending right_lateral strike_slip Reshui_Riyueshan fault zone and the NWW_trending left_lateral strike_slip northern margin of west Qinling Ranges fault zone is also an important boundary fault zone, separating the Xining_Minhe basin and the Xunhua_Hualong basin at the southern and northern sides of the Lajishan Mountain respectively. Geologic geomorphic evidences of new activity revealed by field investigations indicate that the latest movement of the Lajishan fault zone was in late Epipleistocene (only a few segments were active in early Holocene) and is mainly of compressive thrusting with slightly left_lateral strike_slip component. The above movement has possibly resulted in the occurrence of about 20 moderate earthquakes of magnitude around 5.0. The Lajishan region can therefore be regarded as a seismotectonic window to reflect tectonic movement and earthquake activity.

SEED REGION SELECTION AND HOMOGENEITY CRITERION FOR DOORPLATE IMAGE SEGMENTATION IN MOBILE ROBOT NAVIGATION

Focused on the seed region selection and homogeneity criterion in Seeded Region Growing (SRG), an unsupervised seed region selection and a polynomial fitting homogeneity criterion for SRG are proposed in this paper. First of all, making use of Peer Group Filtering (PGF) techniques, an unsupervised seed region selection algorithm is presented to construct a seed region. Then based on the constructed seed region a polynomial fitting homogeneity criterion is applied to solve the concrete problem of doorplate segmentation appearing in the robot navigation along a corridor. At last, experiments are performed and the results demonstrate the effectiveness of the proposed algorithm.

Sediment Load of Asian Rivers flowing into the Oceans and their Regional Variation

Study of the major Asian rivers discharge to the ocean reveals variations of their water discharges and sediment loads, and local characteristics of river sediment concentrations. On the basis of this, the Asian rivers fall into three regions, including Eurasia Arctic, East Asia, Southeast and South Asia Regions. The Eurasia Arctic Region is characterized by the lowest sediment concentration and load, while the East Asia Region is of the highest sediment concentration and higher sediment load, and the South-East and South Asia Region yields higher sediment concentration and highest sediment load.The sediment loads of these regions are mainly controlled by climate, geomorphology and tectonic activity. The Eurasia Arctic rivers with large basin areas and water discharge, drain low relief which consists of tundra sediment, thus causing the lowest sediment load. The East Asia rivers with small basin areas and lowest water discharges, drain extensive loess plateau, and transport most erodible loess material, which results in highest sediment concentration. The SE and South Asia rivers originating from the Tibet Plateau have large basin areas and the largest water discharges because of the Summer Monsoon and high rainfall influence, causing the highest sediment load.In Asia, tectonic motion of the Tibet Plateau plays an important role. Those large rivers originating from the Tibet Plateau transport about 50% of the world river sediment load to ocean annually, forming large estuaries and deltas, and consequently exerting a great influence on sedimentation in the coastal zone and shelves.

STAT3 deficiency prevents hepatocarcinogenesis and promotes biliary proliferation in thioacetamide-induced liver injury

AIM To elucidate the role of STAT3 in hepatocarcinogenesis and biliary ductular proliferation following chronic liver injury. METHODS We investigated thioacetamide(TAA)-induced liver injury, compensatory hepatocyte proliferation, and hepatocellular carcinoma(HCC) development in hepatic STAT3-deficient mice. In addition, we evaluated TAAinduced biliary ductular proliferation and analyzed the activation of sex determining region Y-box9(SOX9) and Yes-associated protein(YAP), which regulate the transdifferentiation of hepatocytes to cholangiocytes.RESULTS Both compensatory hepatocyte proliferation and HCC formation were significantly decreased in hepatic STAT3-deficient mice as compared with control mice. STAT3 deficiency resulted in augmentation of hepatic necrosis and fibrosis. On the other hand, biliary ductular proliferation increased in hepatic STAT3-deficient livers as compared with control livers. SOX9 and YAP were upregulated in hepatic STAT3-deficient hepatocytes.CONCLUSION STAT3 may regulate hepatocyte proliferation as well as transdifferentiation into cholangiocytes and serve as a therapeutic target for HCC inhibition and biliary regeneration.

Geochemical characteristics of soil selenium and evaluation of Serich land resources in the central area of Guiyang City,China

Based on the results of multipurpose regional geochemical surveys of the Guizhou Province, geochemical characteristics of soil Se and Se-rich land resources in the central area of Guiyang City were studied and evaluated.Major conclusions are as follows:(1) the Se content in surface soil of the central area of Guiyang City was 0.17–2.89 mg kg^(-1), and the average was 0.78 mg kg^(-1), which were respectively 2.6 and 3.9 times of the national background value of soil and the world background value of soil.The Se content in deep soil was 0.11–1.48 mg kg^(-1), and the average was 0.44 mg kg^(-1), which were respectively 1.5 and2.2 times of the national background value of soil and the world background value of soil. The soil Se content decreased with the increase in the soil depth on the vertical profile, and the surface soil had a higher Se content.(2)Distribution of Se content was mainly affected by parent material, physicochemical properties of soil and other components, soil type, and land use type. Parent material played a key role, as the soil Se content was mainly originated from parent rock and increased with the background value of Se in parent rock, physicochemical properties of soil and other components had certain influences upon the Se content. Se was shown to have a significant linear positive correlation with S and organic carbon but no significant correlation with p H value. Se content varied with different types of soil as follows: skeleton soil > yellow soil > paddy soil > limestone soil > purple soil. Land use type also hadcertain influences upon the soil Se content as follows: dry land > construction land > garden plot > grassland =garden plot > forest land.(3) Taking 0.4 mg kg^(-1)B x(Se) <3.0 mg kg^(-1) as the standard for Se-rich soil, Se-rich soil of the study area covered an area of 2224 km^2 and 92.5% of the total area; the remaining is general soil. The study area had no Se-excess soil. Therefore, the central area of Guiyang City has a high proportion of Se-rich land, a large area of Serich land resources, and a moderate selenium enrichment strength, which have been rarely seen anywhere and provide advantageous resources for the development of Se-rich featured agriculture.

The ＂MIZBERING＂ Zuibaiji Conference - A Search for Continuity in the Zuibaiji River Basin-

The Zuibaiji River is located in the west of Fukuoka city, which has a rich natural resources and history but various problems as well. In order to solve some of these problems, stakeholders need to observe and talk about the river. Also recently, the ＂MIZBERING Project＂ has been opening up possibilities for renewing riverside uses of lost activities from the old days in Japan. This project is being conducted by citizens, companies and government administrations with an interest in waterside areas. The First MIZBER1NG Zuibaiji River Conference was held to discuss the issues of the Zuibaiji Basin. Its purpose was to visit and search out the nature and history of the entire Zuibaiji Basin from its mountains to the sea and to rediscover the Zuibaiji Basin, and finally to discuss future plans for the Zuibaiji Basin and Imazu Tidal Flat at its outlet. After visiting the Zuibaiji Basin, we discovered a problem that the Zubaiji Dam is holding not only water but also sand, and this problem affects the environment of the Zuibaiji Basin, such as its ecosystem and topography. Finally, we provided a venue for the local people to discuss problems and future plans for the Zuibaiji Basin.

关于“区域管理”的再讨论

文章讨论了区域管理与区域治理的意义,研究认为,区域管理的方法原理适合了区域治理,所不同的是,区域治理比区域管理包含了区域发展的进化意义。区域的管理,任务的重点在于管理或者调控区域的资源环境结构;区域治理,核心是对于区域人口及其聚集而形成的城市有进化目的的组织。

New minimal surfaces in the hyperbolic space

We obtain new complete minimal surfaces in the hyperbolic space H3, by using Ribaucour transformations. Starting with the family of spherical catenoids in H^3 found by Mori(1981), we obtain 2-and 3-parameter families of new minimal surfaces in the hyperbolic space, by solving a non trivial integro-differential system. Special choices of the parameters provide minimal surfaces whose parametrizations are defined on connected regions of R^2 minus a disjoint union of Jordan curves. Any connected region bounded by such a Jordan curve, generates a complete minimal surface, whose boundary at infinity of H^3 is a closed curve. The geometric properties of the surfaces regarding the ends, completeness and symmetries are discussed.

Regional differences in crustal structure of the North China Craton from receiver functions

Moho depth and crustal average Poisson＇s ratio for 823 stations are obtained by H-n： stacking of receiver functions. These, to- gether with topography and receiver function amplitude information, were used to study the crustal structure beneath the North China Craton （NCC）. The results suggest that modified and preserved crust coexist beneath the craton with generally Airy-type isostatic equilibrium. The equilibrium is relatively low in the eastern NCC and some local areas in the central and western NCC, which correlates well with regional geology and tectonic features. Major differences in the crust were observed beneath the eastern, central, and western NCC, with average Moho depths of 33, 37, and 42 km and average Poisson＇s ratios of 0.268, 0.267 and 0.264, respectively. Abnormal Moho depths and Poisson＇s ratios are mainly present in the rift zones, the northern and southern edges of the central NCC, and tectonic boundaries. The crust beneath Ordos retains the characteristics of typical craton. Poisson＇s ratio increases roughly linearly as Moho depth decreases in all three parts of the NCC with different slopes. Receiver function amplitudes are relatively large in the northern edge of the eastern and central NCC, and small in and near the rifts. The Yanshan Mountains and southern part of the Shanxi rift show small-scale variations in the receiver-function ampli- tudes. These observations suggest that overall modification and thinning in the crust occurred in the eastern NCC, and local crustal modification occurred in the central and westem NCC. Different crustal structures in the eastern, central, and western NCC suggest different modification processes and mechanisms. The overall destruction of the crustal structure in the eastern NCC is probably due to the westward subduction of the Pacific Plate during the Meso-Cenozoic time; the local modifications of the crust in the central and western NCC may be due to repeated reactivations at zones with a heterogeneous structure by successive thermal-tectonic events during the long-term evolution of the NCC.