To prevent a vehicle from departing the lane in assistant or automatic steering, real-time vision-based detection of lane is studied. The system architecture, detecting principle and lane model are described. Then the...To prevent a vehicle from departing the lane in assistant or automatic steering, real-time vision-based detection of lane is studied. The system architecture, detecting principle and lane model are described. Then the detecting algorithm of the lane image is discussed in detail. In this algorithm, several proper sub-windows in one image are first selected as the processing regions. To every sub-window, by means of such steps as appropriate pre-processing, edge detection and Hough transform, etc., the lane description features are extracted. Experimental results reveal that this detection method is of good real-time, high recognition reliability and strong robustness, etc., which can provide the decision-making foundation for the following automatic or assistant steering to some extent.展开更多
目的:研究短梗五加果多酚(Acanthopanax sessiliflorus fruit polyphenols,ASFP)对大鼠动脉粥样硬化(atherosclerosis,As)的预防作用,并探讨其作用机制。方法:40只雄性SD大鼠随机平均分成4组,每组10只。采用高脂饮食结合腹腔注射VD3的...目的:研究短梗五加果多酚(Acanthopanax sessiliflorus fruit polyphenols,ASFP)对大鼠动脉粥样硬化(atherosclerosis,As)的预防作用,并探讨其作用机制。方法:40只雄性SD大鼠随机平均分成4组,每组10只。采用高脂饮食结合腹腔注射VD3的方法建立As模型,不同剂量ASFP给药组自造模开始之日起分别灌胃150、75 mg/(kg·d)的ASFP,空白组和高脂饮食组大鼠灌胃等量生理盐水,各实验组连续处理12周后,检测大鼠血清生理生化水平并计算As指数;苏木素-伊红染色观察大鼠主动脉As病变情况;Western blot检测主动脉中黏附分子和丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)信号通路关键基因的蛋白表达水平。结果:与高脂饮食组相比,ASFP能显著降低大鼠血清中的血脂、黏附分子和炎症因子水平,减少主动脉中的脂质沉积,改善各层结构排列紊乱,显著降低主动脉中细胞间黏附分子-1、血管细胞黏附分子-1、磷酸化p38和磷酸化细胞外信号调节蛋白激酶1/2(phospho-extracellular signal regulated kinases 1/2,p-ERK1/2)的蛋白表达量。结论:ASFP具有预防As的作用,其作用可能与其降血脂和抑制p38 MAPK和ERK1/2 MAPK信号通路,进而抑制炎症因子的表达有关。展开更多
Anchovies are migratory fish and adult individuals migrate in group from the sea into the river every year because of reproductive needs. TheYangtze River is the largest river in China, with rich food and fish species...Anchovies are migratory fish and adult individuals migrate in group from the sea into the river every year because of reproductive needs. TheYangtze River is the largest river in China, with rich food and fish species, hence, the Yangtze River would be an ideal habitat for growth and reproduction of anchovy. In this pa- per, based on fishing log data of anchovy in Jiangsu section of the Yangtze River, realted analysis was conducted in digital map using statistical software and GIS. From 2008 to 2011, the number of anchovy fishing vessels and fishing days in Jiangsu section remained stable, but the fishing volume and economic profit of single-vessel fluctuated constantly. This study provides references and advices for plan and management of anchovy fishery resource to administrative department.展开更多
Haiguo Tuzhi （Illustrated Treatise on the Maritime Kingdoms） is one of the earliest gazetteers in early modern China. In order to change the Chinese view of the outside world, scholax-official Wei Yuma （1794-1857）...Haiguo Tuzhi （Illustrated Treatise on the Maritime Kingdoms） is one of the earliest gazetteers in early modern China. In order to change the Chinese view of the outside world, scholax-official Wei Yuma （1794-1857） mad his contemporaries compiled this gazetteer in the middle of the 19th century. Haiguo Tuzhi contains numerous geographical, historical, mad political details covering both the western and eastern hemispheres, which derived from the known information on Western researches and Chinese macient texts from the Tang Dynasty （618-907） to Ming Dynasty （1368-1644）. Haiguo Tuzhi is a significmat work in China, which affected the modernization movement around East Asia, such as Meiji Restoration in Japma. There axe two juan, or scrolls concerning Turkey （the Ottoman Empire）, called southern Duluji （Turkey） mad northern Tuluji （Turkey）, in Haiguo Tuzhi＇s ＂Southwest Ocean＂ part and ＂Great West Ocema＂ part covering the origin of Turkish state, the geographical location and circumstance of Turkey, the distribution of ethnic groups throughout this country, the relationship between Turkey and European countries, the religious situation, mad the policies carried out by Turkish monarchs. Although Haguo Tuzhi is a pmaoramic opus which focuses on the whole outline of countries, it also documents plenty details about Turkish clothing, dietary habits, and characters of people. Haguo Tuzhi provides a chmace to learn the Chinese impressions on Turkish state and people in 19th century展开更多
DNS(domain name system) query log analysis has been a popular research topic in recent years. CLOPE, the represented transactional clustering algorithm, could be readily used for DNS query log mining. However, the alg...DNS(domain name system) query log analysis has been a popular research topic in recent years. CLOPE, the represented transactional clustering algorithm, could be readily used for DNS query log mining. However, the algorithm is inefficient when processing large scale data. The MR-CLOPE algorithm is proposed, which is an extension and improvement on CLOPE based on Map Reduce. Different from the previous parallel clustering method, a two-stage Map Reduce implementation framework is proposed. Each of the stage is implemented by one kind Map Reduce task. In the first stage, the DNS query logs are divided into multiple splits and the CLOPE algorithm is executed on each split. The second stage usually tends to iterate many times to merge the small clusters into bigger satisfactory ones. In these two stages, a novel partition process is designed to randomly spread out original sub clusters, which will be moved and merged in the map phrase of the second phase according to the defined merge criteria. In such way, the advantage of the original CLOPE algorithm is kept and its disadvantages are dealt with in the proposed framework to achieve more excellent clustering performance. The experiment results show that MR-CLOPE is not only faster but also has better clustering quality on DNS query logs compared with CLOPE.展开更多
Autoimmune pancreatitis (AIP) is a newly described entity of pancreatitis in which the pathogenesis appears to involve autoimmune mechanisms. Based on histological and immunohistochemical examinations of various organ...Autoimmune pancreatitis (AIP) is a newly described entity of pancreatitis in which the pathogenesis appears to involve autoimmune mechanisms. Based on histological and immunohistochemical examinations of various organs of AIP patients, AIP appears to be a pancreatic lesion reflecting a systemic "IgG4-related sclerosing disease". Clinically, AIP patients and patients with pancreatic cancer share many features, such as preponderance of elderly males, frequent initial symptom of painless jaundice, development of new-onset diabetes mellitus, and elevated levels of serum tumor markers. It is of uppermost importance not to misdiagnose AIP as pancreatic cancer. Since there is currently no diagnostic serological marker for AIP, and approach to the pancreas for histological examination is generally difficult, AIP is diagnosed using a combination of clinical, serological, morphological, and histopathological features. Findings suggesting AIP rather than pancreatic cancer include:fluctuating obstructive jaundice; elevated serum IgG4 levels; diffuse enlargement of the pancreas; delayed en- hancement of the enlarged pancreas and presence of a capsule-like rim on dynamic computed tomography; low apparent diffusion coefficient values on diffusion-weighted magnetic resonance image; irregular narrowing of the main pancreatic duct on endoscopic retrograde cholangiopancreatography; less upstream dilatation of the main pancreatic duct on magnetic resonance cholangiopancreatography, presence of other organ involvement such as bilateral salivary gland swelling, retroperitoneal fibrosis and hilar or intrahepatic sclerosing cholangitis; negative work-up for malignancy including endoscopic ultrasound-guided fine needle aspiration; and steroid responsiveness. Since AIP responds dramatically to steroid therapy, accurate diagnosis of AIP can avoid unnecessary laparotomy or pancreatic resection.展开更多
Self-Organizing Map is an unsupervised learning algorithm.It has the ability of self-organization,self-learning and side associative thinking.Based on the principle it can identified the complex volcanic lithology.Acc...Self-Organizing Map is an unsupervised learning algorithm.It has the ability of self-organization,self-learning and side associative thinking.Based on the principle it can identified the complex volcanic lithology.According to the logging data of the volcanic rock samples,the SOM will be trained,The SOM training results were analyzed in order to choose optimally parameters of the network.Through identifying the logging data of volcanic formations,the result shows that the map can achieve good application effects.展开更多
The ＂Pictorial＂ or ＂Iconic Turn＂ is a central issue in the contemporary theory of images and visual cultural studies. Should the theories concerning the ＂Iconic Turn＂ and formulated in the last 20 years by schol...The ＂Pictorial＂ or ＂Iconic Turn＂ is a central issue in the contemporary theory of images and visual cultural studies. Should the theories concerning the ＂Iconic Turn＂ and formulated in the last 20 years by scholars such as Gottfried Boehm, William Mitchell, Hans Belting be taken as critical theories of crisis？ Is the currently experienced ＂turn towards images＂ （and their progressive rehabilitation after a long standing philosophical and theological rejection） a sign and symptom of some crisis of people＇s relation with images, language and, generally speaking, with the representation forms of reality？ The main hypothesis of this essay envisages two sets of problems： first, the analysis of the relation between the possible idea of turning point and the concept of crisis; secondly, the thorough investigation of the relation connecting the iconic turn to the project of ＂critical iconology＂ or ＂critique of visual culture,＂ as outlined by Hans Belting and William Mitchell. From the interpretation of the ＂Iconic Turn＂ as situation of crisis and aesthetic, anthropological, and epistemological transformation follows the need for the sciences of image to provide a ＂critical iconology＂ in order to be able to theoretically reformulate the ideological and political presuppositions of some dominant contemporary forms of visual representation.展开更多
文摘To prevent a vehicle from departing the lane in assistant or automatic steering, real-time vision-based detection of lane is studied. The system architecture, detecting principle and lane model are described. Then the detecting algorithm of the lane image is discussed in detail. In this algorithm, several proper sub-windows in one image are first selected as the processing regions. To every sub-window, by means of such steps as appropriate pre-processing, edge detection and Hough transform, etc., the lane description features are extracted. Experimental results reveal that this detection method is of good real-time, high recognition reliability and strong robustness, etc., which can provide the decision-making foundation for the following automatic or assistant steering to some extent.
文摘目的:研究短梗五加果多酚(Acanthopanax sessiliflorus fruit polyphenols,ASFP)对大鼠动脉粥样硬化(atherosclerosis,As)的预防作用,并探讨其作用机制。方法:40只雄性SD大鼠随机平均分成4组,每组10只。采用高脂饮食结合腹腔注射VD3的方法建立As模型,不同剂量ASFP给药组自造模开始之日起分别灌胃150、75 mg/(kg·d)的ASFP,空白组和高脂饮食组大鼠灌胃等量生理盐水,各实验组连续处理12周后,检测大鼠血清生理生化水平并计算As指数;苏木素-伊红染色观察大鼠主动脉As病变情况;Western blot检测主动脉中黏附分子和丝裂原活化蛋白激酶(mitogen-activated protein kinase,MAPK)信号通路关键基因的蛋白表达水平。结果:与高脂饮食组相比,ASFP能显著降低大鼠血清中的血脂、黏附分子和炎症因子水平,减少主动脉中的脂质沉积,改善各层结构排列紊乱,显著降低主动脉中细胞间黏附分子-1、血管细胞黏附分子-1、磷酸化p38和磷酸化细胞外信号调节蛋白激酶1/2(phospho-extracellular signal regulated kinases 1/2,p-ERK1/2)的蛋白表达量。结论:ASFP具有预防As的作用,其作用可能与其降血脂和抑制p38 MAPK和ERK1/2 MAPK信号通路,进而抑制炎症因子的表达有关。
基金Supported by the R&D Special Fund for Public Welfare Industry(201203086)Special Financial Fund of Ministry of Agriculture(6125005)Central Public-interest Scientific Institution Basal Research Fund(2011JBFC04)~~
文摘Anchovies are migratory fish and adult individuals migrate in group from the sea into the river every year because of reproductive needs. TheYangtze River is the largest river in China, with rich food and fish species, hence, the Yangtze River would be an ideal habitat for growth and reproduction of anchovy. In this pa- per, based on fishing log data of anchovy in Jiangsu section of the Yangtze River, realted analysis was conducted in digital map using statistical software and GIS. From 2008 to 2011, the number of anchovy fishing vessels and fishing days in Jiangsu section remained stable, but the fishing volume and economic profit of single-vessel fluctuated constantly. This study provides references and advices for plan and management of anchovy fishery resource to administrative department.
文摘Haiguo Tuzhi （Illustrated Treatise on the Maritime Kingdoms） is one of the earliest gazetteers in early modern China. In order to change the Chinese view of the outside world, scholax-official Wei Yuma （1794-1857） mad his contemporaries compiled this gazetteer in the middle of the 19th century. Haiguo Tuzhi contains numerous geographical, historical, mad political details covering both the western and eastern hemispheres, which derived from the known information on Western researches and Chinese macient texts from the Tang Dynasty （618-907） to Ming Dynasty （1368-1644）. Haiguo Tuzhi is a significmat work in China, which affected the modernization movement around East Asia, such as Meiji Restoration in Japma. There axe two juan, or scrolls concerning Turkey （the Ottoman Empire）, called southern Duluji （Turkey） mad northern Tuluji （Turkey）, in Haiguo Tuzhi＇s ＂Southwest Ocean＂ part and ＂Great West Ocema＂ part covering the origin of Turkish state, the geographical location and circumstance of Turkey, the distribution of ethnic groups throughout this country, the relationship between Turkey and European countries, the religious situation, mad the policies carried out by Turkish monarchs. Although Haguo Tuzhi is a pmaoramic opus which focuses on the whole outline of countries, it also documents plenty details about Turkish clothing, dietary habits, and characters of people. Haguo Tuzhi provides a chmace to learn the Chinese impressions on Turkish state and people in 19th century
基金Project(61103046) supported in part by the National Natural Science Foundation of ChinaProject(B201312) supported by DHU Distinguished Young Professor Program,China+1 种基金Project(LY14F020007) supported by Zhejiang Provincial Natural Science Funds of ChinaProject(2014A610072) supported by the Natural Science Foundation of Ningbo City,China
文摘DNS(domain name system) query log analysis has been a popular research topic in recent years. CLOPE, the represented transactional clustering algorithm, could be readily used for DNS query log mining. However, the algorithm is inefficient when processing large scale data. The MR-CLOPE algorithm is proposed, which is an extension and improvement on CLOPE based on Map Reduce. Different from the previous parallel clustering method, a two-stage Map Reduce implementation framework is proposed. Each of the stage is implemented by one kind Map Reduce task. In the first stage, the DNS query logs are divided into multiple splits and the CLOPE algorithm is executed on each split. The second stage usually tends to iterate many times to merge the small clusters into bigger satisfactory ones. In these two stages, a novel partition process is designed to randomly spread out original sub clusters, which will be moved and merged in the map phrase of the second phase according to the defined merge criteria. In such way, the advantage of the original CLOPE algorithm is kept and its disadvantages are dealt with in the proposed framework to achieve more excellent clustering performance. The experiment results show that MR-CLOPE is not only faster but also has better clustering quality on DNS query logs compared with CLOPE.
文摘Autoimmune pancreatitis (AIP) is a newly described entity of pancreatitis in which the pathogenesis appears to involve autoimmune mechanisms. Based on histological and immunohistochemical examinations of various organs of AIP patients, AIP appears to be a pancreatic lesion reflecting a systemic "IgG4-related sclerosing disease". Clinically, AIP patients and patients with pancreatic cancer share many features, such as preponderance of elderly males, frequent initial symptom of painless jaundice, development of new-onset diabetes mellitus, and elevated levels of serum tumor markers. It is of uppermost importance not to misdiagnose AIP as pancreatic cancer. Since there is currently no diagnostic serological marker for AIP, and approach to the pancreas for histological examination is generally difficult, AIP is diagnosed using a combination of clinical, serological, morphological, and histopathological features. Findings suggesting AIP rather than pancreatic cancer include:fluctuating obstructive jaundice; elevated serum IgG4 levels; diffuse enlargement of the pancreas; delayed en- hancement of the enlarged pancreas and presence of a capsule-like rim on dynamic computed tomography; low apparent diffusion coefficient values on diffusion-weighted magnetic resonance image; irregular narrowing of the main pancreatic duct on endoscopic retrograde cholangiopancreatography; less upstream dilatation of the main pancreatic duct on magnetic resonance cholangiopancreatography, presence of other organ involvement such as bilateral salivary gland swelling, retroperitoneal fibrosis and hilar or intrahepatic sclerosing cholangitis; negative work-up for malignancy including endoscopic ultrasound-guided fine needle aspiration; and steroid responsiveness. Since AIP responds dramatically to steroid therapy, accurate diagnosis of AIP can avoid unnecessary laparotomy or pancreatic resection.
基金Supported by National Oil-gas Project:No XQ-2004-07
文摘Self-Organizing Map is an unsupervised learning algorithm.It has the ability of self-organization,self-learning and side associative thinking.Based on the principle it can identified the complex volcanic lithology.According to the logging data of the volcanic rock samples,the SOM will be trained,The SOM training results were analyzed in order to choose optimally parameters of the network.Through identifying the logging data of volcanic formations,the result shows that the map can achieve good application effects.
文摘The ＂Pictorial＂ or ＂Iconic Turn＂ is a central issue in the contemporary theory of images and visual cultural studies. Should the theories concerning the ＂Iconic Turn＂ and formulated in the last 20 years by scholars such as Gottfried Boehm, William Mitchell, Hans Belting be taken as critical theories of crisis？ Is the currently experienced ＂turn towards images＂ （and their progressive rehabilitation after a long standing philosophical and theological rejection） a sign and symptom of some crisis of people＇s relation with images, language and, generally speaking, with the representation forms of reality？ The main hypothesis of this essay envisages two sets of problems： first, the analysis of the relation between the possible idea of turning point and the concept of crisis; secondly, the thorough investigation of the relation connecting the iconic turn to the project of ＂critical iconology＂ or ＂critique of visual culture,＂ as outlined by Hans Belting and William Mitchell. From the interpretation of the ＂Iconic Turn＂ as situation of crisis and aesthetic, anthropological, and epistemological transformation follows the need for the sciences of image to provide a ＂critical iconology＂ in order to be able to theoretically reformulate the ideological and political presuppositions of some dominant contemporary forms of visual representation.
