期刊文献+
共找到377篇文章
< 1 2 19 >
每页显示 20 50 100
The Dissemination, Acceptance and Evolution of The Romance of the Three Kingdoms in Japan
1
作者 CHEN Rui-qi LI Jie 《Journal of Literature and Art Studies》 2024年第7期527-540,共14页
As one of the Four Great Masterpieces of China,The Romance of the Three Kingdoms has become a landmark of ancient Chinese literature with vivid and profound character images,ups and downs of politics and war descripti... As one of the Four Great Masterpieces of China,The Romance of the Three Kingdoms has become a landmark of ancient Chinese literature with vivid and profound character images,ups and downs of politics and war descriptions,and appealing historical plots.After being introduced to Japan in the second half of the 17th century,it was spread in Japanese society and was accepted for literary value,social needs and other reasons,then a series of evolutions were produced by combining with local culture,eventually becoming a national culture in Japan.This paper selects the most popular text of The Romance of the Three Kingdoms with 24 chapters and 120 verses in the Wanli period of the Ming Dynasty,and the Japanese translation of The Popular Romance of the Three Kingdoms published by Hunan Wenshan in 1689 as the objects,guided by Ralph Linton’s“Manifestation,Selection,Integration”cultural communication research method,to analyze the dissemination,acceptance and evolution of The Romance of the Three Kingdoms in 17-20 centuries’Japan,which started from the field of literature,then combined with various cultural forms and spread to the civic class,and finally entered politics area and produced a series of evolutions under the influence of Japanese values to become the representative culture of Japan.This paper suggests that in today’s world of frequent cultural exchanges,China should,based on strengthening cultural self-confidence,actively and appropriately select and accept foreign cultures with the attitude of prioritizing our own culture and utilizing foreign culture for our own purposes.The research outcome can provide experience for the current Chinese culture to go to the world with high quality. 展开更多
关键词 The Romance of the Three Kingdoms dissemination ACCEPTANCE EVOLUTION
下载PDF
On the Dissemination and Acceptance of Dongpo Culture in the UK and the US
2
作者 QIU Shicun XU Jinwen 《Sino-US English Teaching》 2024年第7期322-327,共6页
This study delves into the intricate dissemination and acceptance of Dongpo Culture,epitomized by Su Shi,in the UK and the US,aiming to bolster the global recognition of Chinese literary and cultural values and advanc... This study delves into the intricate dissemination and acceptance of Dongpo Culture,epitomized by Su Shi,in the UK and the US,aiming to bolster the global recognition of Chinese literary and cultural values and advance the national strategy of“Going Out”.Su Shi’s multifaceted contributions—spanning literature,philosophy,calligraphy,and art—serve as a pinnacle of Northern Song Dynasty culture.This research evaluates the varied translations,monographs,biographies,journal articles,and doctoral dissertations about Su Shi in these Western nations,using literature analysis,typical analysis,and comparative methods.The findings reveal a robust interest in Su Shi studies in the US,marked by a proliferation of scholarly works and translations across diverse disciplines,such as literature,art,and aesthetics,establishing the US as a leading center for Dongpo Culture studies.Conversely,the UK,despite its early engagement,shows limited scholarly outputs and significant research papers on the subject.By examining Dongpo Culture’s overseas communication path and influence paradigm,this paper seeks to enhance China’s cultural soft power and self-confidence.It underscores the vital role of international cultural exchange in constructing a positive image of China’s national identity,facilitating its peaceful rise,and providing strategic insights for the global promotion of Chinese culture. 展开更多
关键词 Dongpo Culture dissemination and acceptance national image cultural soft power
下载PDF
A Study on the Path of Promoting External Dissemination of Regional Culture with Translation Technology under the Background of New Quality Productivity
3
作者 Juan Zhou 《Journal of Contemporary Educational Research》 2024年第8期26-31,共6页
With the introduction of the concept of new quality productivity characterized by high technology,efficiency,and quality,various industries in China have ignited a high spirit of innovation and development.Against thi... With the introduction of the concept of new quality productivity characterized by high technology,efficiency,and quality,various industries in China have ignited a high spirit of innovation and development.Against this background,this article analyzes the significance and current situation of the external dissemination of regional culture and combines the application of translation technology empowered by new quality productivity to explore a path suitable for the wider,more effective,and higher-quality external dissemination of regional culture.The aim is to provide practical experience for promoting the effective dissemination of regional culture in China to the world and better build a cultural power. 展开更多
关键词 New quality productivity Regional culture External dissemination Translation technology
下载PDF
On the International Dissemination of Zhuang Medicine
4
作者 ZHANG Yan TAO Jien +1 位作者 LIAN Yujie CHEN Yingzhu 《Journalism and Mass Communication》 2024年第4期227-231,共5页
As an important part of Chinese culture,Zhuang medicine has a long history and unique diagnosis and treatment.With the international dissemination of Chinese culture,the international dissemination of Zhuang medicine ... As an important part of Chinese culture,Zhuang medicine has a long history and unique diagnosis and treatment.With the international dissemination of Chinese culture,the international dissemination of Zhuang medicine has become an increasing concern.This paper aims to discuss the status quo,challenges of the international dissemination of Zhuang medicine,then puts forwards corresponding solutions and recommendations,so as to make Zhuang medicine known by the world. 展开更多
关键词 international dissemination Zhuang medicine intercultural communication
下载PDF
On the Problem of All Equal Positive Odd Number Solutions of the Dissemination of the Ends' Guess 被引量:1
5
作者 刘元宗 《Chinese Quarterly Journal of Mathematics》 CSCD 2000年第2期108-109,共2页
The thesis is concerned with the problem of the dissemination of the Ends’ guess and offers the formula of all equal positive odd number solutions.
关键词 Ends’ guess dissemination all equal positive odd number solutions
下载PDF
Study on Microblog Dissemination Law in View ol Forwarding
6
作者 CHEN Xia JIA Yuan GUO Longfei 《China Communications》 SCIE CSCD 2014年第2期128-137,共10页
Forwarding is a major means of information dissemination on the Microblog platform.The article,combining static analysis and dynamic analysis,takes Microblog forwarding as the object of study,and studies the network t... Forwarding is a major means of information dissemination on the Microblog platform.The article,combining static analysis and dynamic analysis,takes Microblog forwarding as the object of study,and studies the network topology of grass-roots Microblog forwarding users.It also studies the correlation between characteristic quantity and forwarding times of Microblog network topology.Furthermore,it conducts modification on virus transmission model,builds and verifies the Microblog forwarding dynamical model.The study finds out that Microblog postings present qute strong dissemination capacity on the initial stage,and some Microblog postings with many forwarding times and long duration of forwarding process due to the dynamic growth of the forwarding user network and the joining of strong nodes make network infection density decrease in some phases. 展开更多
关键词 Microblog dissemination law social network dissemination dynamics Microblog forwarding
下载PDF
International Dissemination of TCM Culture under the "Belt and Road" Initiative: Opportunities and Challenges
7
作者 毛和荣 LIU Dian-gang HE Qiang 《海外英语》 2017年第1期168-169,184,共3页
The international dissemination of TCM culture, as a carrier of the implementation of the"Belt and Road"Initiative, is being endowed with greater importance. However, the spread of TCM culture into the world... The international dissemination of TCM culture, as a carrier of the implementation of the"Belt and Road"Initiative, is being endowed with greater importance. However, the spread of TCM culture into the world faces opportunities as well as challenges. To better serve the"Belt and Road"Initiative, measures should be taken to strengthen TCM communication and cooperation in different aspects and build a sound intellectual property protection system. 展开更多
关键词 International dissemination TCM Culture the " Belt and Road " Initiative OPPORTUNITIES Challenges
下载PDF
Analysis of the Characteristics and Model of Online Social Network Information Dissemination
8
作者 DANG Yan 《International English Education Research》 2016年第12期18-21,共4页
Online social network is increasingly showing a significant impact and role in many areas of social life. In the study of online social network related issues have become the consensus of the academic and industrial c... Online social network is increasingly showing a significant impact and role in many areas of social life. In the study of online social network related issues have become the consensus of the academic and industrial communities and the urgent need for. This paper mainly studies the problem of information dissemination in social network, the mode of communication, behavior, propagation paths and propagation characteristics are studied, and take the Tencent micro-blog as an example, based on the analysis of many examples, several main models and characteristics of information dissemination in social network platform. 展开更多
关键词 online social network information dissemination Information dissemination characteristic: Information dissemination model
下载PDF
Molecular mechanisms of peritoneal dissemination in gastric cancer 被引量:20
9
作者 Mitsuro Kanda Yasuhiro Kodera 《World Journal of Gastroenterology》 SCIE CAS 2016年第30期6829-6840,共12页
Peritoneal dissemination represents a devastating form of gastric cancer(GC) progression with a dismal prognosis. There is no effective therapy for this condition. The 5-year survival rate of patients with peritoneal ... Peritoneal dissemination represents a devastating form of gastric cancer(GC) progression with a dismal prognosis. There is no effective therapy for this condition. The 5-year survival rate of patients with peritoneal dissemination is 2%, even including patients with only microscopic free cancer cells without macroscopic peritoneal nodules. The mechanism of peritoneal dissemination of GC involves several steps: detachment of cancer cells from the primary tumor, survival in the free abdominal cavity, attachment to the distant peritoneum, invasion into the subperitoneal space and proliferation with angiogenesis. These steps are not mutually exclusive, and combinations of different molecular mechanisms can occur in each process of peritoneal dissemination. A comprehensive understanding of the molecular events involved in peritoneal dissemination is important and should be systematically pursued. It is crucial to identify novel strategies for the prevention of this condition and for identification of markers of prognosis and the development of molecular-targeted therapies. In this review, we provide an overview of recently published articles addressing the molecular mechanisms of peritoneal dissemination of GC to provide an update on what is currently known in this field and to propose novel promising candidates for use in diagnosis and as therapeutic targets. 展开更多
关键词 GASTRIC cancer PERITONEAL dissemination MICROENVIRONMENT BIOMARKER Molecular target
下载PDF
Prognostic nutritional index is an independent prognostic factor for gastric cancer patients with peritoneal dissemination 被引量:20
10
作者 Runcong Nie Shuqiang Yuan +7 位作者 Shi Chen Xiaojiang Chen Yongming Chen Baoyan Zhu Haibo Qiu Zhiwei Zhou Junsheng Peng Yingbo Chen 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2016年第6期570-578,共9页
Objective: The predictive and prognostic role of prognostic nutritional index(PNI) in gastric cancer patients with peritoneal dissemination remains unclear. This study aims to explore the role of the PNI in predict... Objective: The predictive and prognostic role of prognostic nutritional index(PNI) in gastric cancer patients with peritoneal dissemination remains unclear. This study aims to explore the role of the PNI in predicting outcomes of gastric cancer patients with peritoneal dissemination.Methods: A total of 660 patients diagnosed with gastric adenocarcinoma with peritoneal metastasis between January 2000 and April 2014 at Sun Yat-sen University Cancer Center and the Sixth Affiliated Hospital of Sun Yatsen University were retrospectively analyzed. The clinicopathologic characteristics and clinical outcomes of patients with peritoneal dissemination were analyzed.Results: Compared with PNI-high group, PNI-low group was correlated with advanced age(P=0.036), worse performance status(P0.001), higher frequency of ascites(P0.001) and higher frequency of multisite distant metastasis(P0.001). Kaplan-Meier survival curves showed that PNI-high group had a significantly longer median overall survival than PNI-low group(13.13 vs. 9.03 months, P0.001). Multivariate survival analysis revealed that Borrmann type IV(P=0.014), presence of ascites(P=0.017) and lower PNI(P=0.041) were independent poor prognostic factors, and palliative surgery(P0.001) and first-line chemotherapy(P0.001) were good prognostic factors. For patients receiving palliative surgery, the postoperative morbidity rates in the PNI-low group and PNIhigh group were 9.1% and 9.9%, respectively(P=0.797). The postoperative mortality rate was not significantly different between PNI-low and PNI-high groups(2.3% vs. 0.9%, P=0.362).Conclusions: PNI is a useful and practical tool for evaluating the nutritional status of gastric cancer patients with peritoneal dissemination, and is an independent prognostic factor for these patients. 展开更多
关键词 Prognostic nutritional index(PNI) gastric cancer peritoneal dissemination SURVIVAL
下载PDF
Use of high-resolution X-ray computed tomography and 3D image analysis to quantify mineral dissemination and pore space in oxide copper ore particles 被引量:8
11
作者 Bao-hua Yang Ai-xiang Wu +2 位作者 Guillermo A.Narsilio Xiu-xiu Miao Shu-yue Wu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2017年第9期965-973,共9页
Mineral dissemination and pore space distribution in ore particles are important features that influence heap leaching performance. To quantify the mineral dissemination and pore space distribution of an ore particle,... Mineral dissemination and pore space distribution in ore particles are important features that influence heap leaching performance. To quantify the mineral dissemination and pore space distribution of an ore particle, a cylindrical copper oxide ore sample (I center dot 4.6 mm x 5.6 mm) was scanned using high-resolution X-ray computed tomography (HRXCT), a nondestructive imaging technology, at a spatial resolution of 4.85 mu m. Combined with three-dimensional (3D) image analysis techniques, the main mineral phases and pore space were segmented and the volume fraction of each phase was calculated. In addition, the mass fraction of each mineral phase was estimated and the result was validated with that obtained using traditional techniques. Furthermore, the pore phase features, including the pore size distribution, pore surface area, pore fractal dimension, pore centerline, and the pore connectivity, were investigated quantitatively. The pore space analysis results indicate that the pore size distribution closely fits a log-normal distribution and that the pore space morphology is complicated, with a large surface area and low connectivity. This study demonstrates that the combination of HRXCT and 3D image analysis is an effective tool for acquiring 3D mineralogical and pore structural data. 展开更多
关键词 high-resolution X-ray computed tomography 3D image analysis ore particles mineral dissemination pore space
下载PDF
A nomogram to predict prognosis for gastric cancer with peritoneal dissemination 被引量:6
12
作者 Shi Chen Xijie Chen +6 位作者 Runcong Nie Liying Ou Yang Aihong Liu Yuanfang Li Zhiwei Zhou Yingbo Chen Junsheng Peng 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2018年第4期449-459,共11页
Objective: To identify independent prognostic factors to be included in a nomogram to predict the prognosis ofgastric cancer patients with peritoneal dissemination.Methods: This is a retrospective study on 684 patie... Objective: To identify independent prognostic factors to be included in a nomogram to predict the prognosis ofgastric cancer patients with peritoneal dissemination.Methods: This is a retrospective study on 684 patients with a histological diagnosis of gastric cancer withperitoneal dissemination from the Sun Yat-sen University Cancer Center as the development set, and 62 gastriccancer patients from the Sixth Affiliated Hospital of Sun Yat-sen University as the validation group. Chi-square testand Cox regression analysis were used to compare the clinicopathological variables and the prognosis of gastriccancer patients with peritoneal dissemination. The Harrell's concordance index (C-index) and calibration curvewere determined for comparisons of predictive ability of the nomogram.Results: Univariate and multivariate analyses showed that serum carcinoembryonic antigen (CEA) level(P=0.032), ascites grading (P=0.008), presence of extraperitoneal metastasis (P〈0.001), seeding status (P=0.016) andperformance status (P=0.009) were independent prognostic factors for gastric cancer patients with peritonealdissemination in the development set. The nomogram model was constructed using these five factors. Internalvalidation showed that the C-index of the model was 0.641. For the external validation, the C-index of this modelwas 0.709.Conclusions: We developed and validated a nomogram to predict the prognosis for gastric cancer patients withperitoneal dissemination. This nomogram may play an important clinical role in guiding palliative therapy for thesetypes of patients, although it may need more data for optimization. 展开更多
关键词 Gastric cancer PROGNOSIS peritoneal dissemination NOMOGRAM
下载PDF
A Utility-Based Buffer Management Policy for Improving Data Dissemination in Opportunistic Networks 被引量:5
13
作者 Jiansheng Yao Chunguang Ma +2 位作者 Haitao Yu Yanling Liu Qi Yuan 《China Communications》 SCIE CSCD 2017年第7期118-126,共9页
In opportunistic networks, most existing buffer management policies including scheduling and passive dropping policies are mainly for routing protocols. In this paper, we proposed a Utility-based Buffer Management str... In opportunistic networks, most existing buffer management policies including scheduling and passive dropping policies are mainly for routing protocols. In this paper, we proposed a Utility-based Buffer Management strategy(UBM) for data dissemination in opportunistic networks. In UBM, we first design a method of computing the utility values of caching messages according to the interest of nodes and the delivery probability of messages, and then propose an overall buffer management policy based on the utility. UBM driven by receivers completely implements not only caching policies, passive and proactive dropping policies, but also scheduling policies of senders. Simulation results show that, compared with some classical dropping strategies, UBM can obtain higher delivery ratio and lower delay latency by using smaller network cost. 展开更多
关键词 opportunistic networks data dissemination buffer management strategy utility-based
下载PDF
Analysis and external validation of a nomogram to predict peritoneal dissemination in gastric cancer 被引量:6
14
作者 Xijie Chen Shi Chen +6 位作者 Xinyou Wang Runcong Nie Dongwen Chen Jun Xiang Yijia Lin Yingbo Chen Junsheng Peng 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2020年第2期197-207,共11页
Objective:Peritoneal dissemination is difficult to diagnose by conventional imaging technologies.We aimed to construct a nomogram to predict peritoneal dissemination in gastric cancer(GC)patients.Methods:We retrospect... Objective:Peritoneal dissemination is difficult to diagnose by conventional imaging technologies.We aimed to construct a nomogram to predict peritoneal dissemination in gastric cancer(GC)patients.Methods:We retrospectively analyzed 1,112 GC patients in Sun Yat-sen University Cancer Center between2001 and 2010 as the development set and 474 patients from The Sixth Affiliated Hospital,Sun Yat-sen University between 2010 and 2016 as the validation set.The clinicopathological variables associated with gastric cancer with peritoneal dissemination(GCPD)were analyzed.We used logistic regression analysis to identify independent risk factors for peritoneal dissemination.Then,we constructed a nomogram for the prediction of GCPD and defined its predictive value with a receiver operating characteristic(ROC)curve.External validation was performed to validate the applicability of the nomogram.Results:In total,250 patients were histologically identified as having peritoneal dissemination.Logistic regression analysis demonstrated that age,sex,tumor location,tumor size,signet-ring cell carcinoma(SRCC),T stage,N stage and Borrmann classification IV(Borrmann IV)were independent risk factors for peritoneal dissemination.We constructed a nomogram consisting of these eight factors to predict GCPD and found an optimistic predictive capability,with a C-index of 0.791,an area under the curve(AUC)of 0.791,and a 95%confidence interval(95%CI)of 0.762-0.820.The results found in the external validation set were also promising.Conclusions:We constructed a highly sensitive nomogram that can assist clinicians in the early diagnosis of GCPD and serve as a reference for optimizing clinical management strategies. 展开更多
关键词 Gastric cancer peritoneal dissemination NOMOGRAM
下载PDF
Concept of scientific wildlife conservation and its dissemination 被引量:2
15
作者 Xue-Hong ZHOU Xiao-Tong WAN +1 位作者 Yu-Hui JIN Wei ZHANG 《Zoological Research》 CAS CSCD 2016年第5期270-274,共5页
In recent years, wildlife conservation has attracted great public attention. However, substantial distinctions can be found in the prevailing concepts of wildlife conservation, particularly with the recent notion that... In recent years, wildlife conservation has attracted great public attention. However, substantial distinctions can be found in the prevailing concepts of wildlife conservation, particularly with the recent notion that emphasizes animal rights. Wildlife welfare and wildlife rights are not synonymous, with welfare more compatible with the reasonable and legal utilization of wildlife. The key to scientific wildlife conservation is the appropriate awareness and appreciation of the relationship between wildlife conservation and utilization and the theoretical basis of holism. Nevertheless, rational biases regarding the public's understanding of wildlife conservation and the spread of information via social media still exist. As such, expansion of the concept of scientific wildlife conservation requires the application of several measures. Wildlife conservation researchers should be regarded as the most important disseminators of scientifically-based information, with education in schools and universities of growing importance. Furthermore, the media should shoulder the social responsibility for the accurate dissemination of conservation information. 展开更多
关键词 Wildlife conservation scientific concept MEDIA dissemination.
下载PDF
Primary rectal signet ring cell carcinoma with peritoneal dissemination and gastric secondaries 被引量:1
16
作者 Hsien-Lin Sim Kok-Yang Tan +1 位作者 Pak-Leng Poon Anton Cheng 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第13期2118-2120,共3页
Disseminated signet ring cell carcinomas frequently arise from the stomach. However, primaries in the colon and rectum have also been reported. We present a 68 year old lady who presented with a change in her bowel ha... Disseminated signet ring cell carcinomas frequently arise from the stomach. However, primaries in the colon and rectum have also been reported. We present a 68 year old lady who presented with a change in her bowel habit. Colonoscopy showed a stenosing rectal tumour at 7 cm to 8 cm from the anal verge. Multiple scattered ulcers were also noted along the entire length of the colon. Biopsy of the lesions revealed signet ring cell adenocarcinoma. Gastroscopy showed multiple nodules with ulceration over several areas of the stomach which were similar in appearance to the colonic lesions. However, no primary tumour of the stomach was seen. Biopsy of the gastric lesions also showed signet ring cell adenocarcinoma. Computed tomography scan of the abdomen and pelvis revealed circumferential tumour at the rectosigmoid junction with possible invasion into the left ischiorectal fossa. The overall picture was that of a primary rectal signet ring cell carcinoma with peritoneal dissemination. The patient was referred for palliative chemotherapy in view of the disseminated disease. In the present report, we discuss this interesting pathological entity and review the role of various histolological techniques in helping to identify the primary tumor. 展开更多
关键词 Signet ring cell carcinoma Colorectal tumour Peritoneal dissemination Gastric secondaries
下载PDF
Peritoneal dissemination of pancreatic cancer caused by endoscopic ultrasound-guided fine needle aspiration:A case report and literature review 被引量:1
17
作者 Hideaki Kojima Minoru Kitago +14 位作者 Eisuke Iwasaki Yohei Masugi Yohji Matsusaka Hiroshi Yagi Yuta Abe Yasushi Hasegawa Shutaro Hori Masayuki Tanaka Yutaka Nakano Yusuke Takemura Seiichiro Fukuhara Yoshiyuki Ohara Michiie Sakamoto Shigeo Okuda Yuko Kitagawa 《World Journal of Gastroenterology》 SCIE CAS 2021年第3期294-304,共11页
BACKGROUND Endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)is a biopsy technique widely used to diagnose pancreatic tumors because of its high sensitivity and specificity.Although needle-tract seeding caus... BACKGROUND Endoscopic ultrasound-guided fine needle aspiration(EUS-FNA)is a biopsy technique widely used to diagnose pancreatic tumors because of its high sensitivity and specificity.Although needle-tract seeding caused by EUS-FNA has been recently reported,dissemination of pancreatic cancer cells is generally considered to be a rare complication that does not affect patient prognosis.However,the frequency of dissemination and needle-tract seeding appears to have been underestimated.We present a case of peritoneal dissemination of pancreatic cancer due to preoperative EUS-FNA.CASE SUMMARY An 81-year-old man was referred to the Department of Surgery of our hospital in Japan owing to the detection of a pancreatic mass on computed tomography during medical screening.Trans-gastric EUS-FNA revealed that the mass was an adenocarcinoma;hence laparoscopic distal pancreatectomy with lymphadenectomy was performed.No intraoperative peritoneal dissemination and liver metastasis were visually detected,and pelvic lavage cytology was negative for carcinoma cells.The postoperative surgical specimen was negative for carcinoma cells at the dissected margin and the cut end margin;however,pathological findings revealed adenocarcinoma cells on the peritoneal surface proximal to the needle puncture site,and the cells were suspected to be disseminated via EUSFNA.Hence,the patient received adjuvant therapy with S-1(tegafur,gimeracil,and oteracil potassium);however,computed tomography performed 5 mo after surgery revealed liver metastasis and cancerous peritonitis.The patient received palliative therapy and died 8 mo after the operation.CONCLUSION The indications of EUS-FNA should be carefully considered to avoid iatrogenic dissemination,especially for cancers in the pancreatic body or tail. 展开更多
关键词 Case report Pancreatic carcinoma Endoscopic ultrasound-guided fine needle aspiration Peritoneal dissemination Cancerous peritonitis BIOPSY
下载PDF
Hash-area-based data dissemination protocol in wireless sensor networks 被引量:1
18
作者 王田 王国军 +1 位作者 过敏意 贾维嘉 《Journal of Central South University of Technology》 EI 2008年第3期392-398,共7页
HashQuery,a Hash-area-based data dissemination protocol,was designed in wireless sensor networks. Using a Hash function which uses time as the key,both mobile sinks and sensors can determine the same Hash area. The se... HashQuery,a Hash-area-based data dissemination protocol,was designed in wireless sensor networks. Using a Hash function which uses time as the key,both mobile sinks and sensors can determine the same Hash area. The sensors can send the information about the events that they monitor to the Hash area and the mobile sinks need only to query that area instead of flooding among the whole network,and thus much energy can be saved. In addition,the location of the Hash area changes over time so as to balance the energy consumption in the whole network. Theoretical analysis shows that the proposed protocol can be energy-efficient and simulation studies further show that when there are 5 sources and 5 sinks in the network,it can save at least 50% energy compared with the existing two-tier data dissemination(TTDD) protocol,especially in large-scale wireless sensor networks. 展开更多
关键词 wireless sensor networks Hash function data dissemination query processing mobile sinks
下载PDF
Intrathecal methotrexate in combination with systemic chemotherapy in glioblastoma patients with leptomeningeal dissemination:A retrospective analysis 被引量:1
19
作者 Xun Kang Feng Chen +8 位作者 Shou-Bo Yang Ya-Li Wang Zeng-Hui Qian Yan Li Hao Lin Parker Li Yi-Chen Peng Xiao-Min Wang Wen-Bin Li 《World Journal of Clinical Cases》 SCIE 2022年第17期5595-5605,共11页
BACKGROUND Glioblastoma(GBM)is one of the most common and aggressive primary malignant brain tumors with severe symptoms and a poor prognosis.Leptomeningeal dissemination(LMD)is a serious complication of GBM that ofte... BACKGROUND Glioblastoma(GBM)is one of the most common and aggressive primary malignant brain tumors with severe symptoms and a poor prognosis.Leptomeningeal dissemination(LMD)is a serious complication of GBM that often results in dire outcomes.There is currently no effective treatment.AIM To estimate the clinical outcomes of combination therapy in GBM patients with LMD METHODS A retrospective analysis was conducted using data collected from GBM patients diagnosed with LMD from January 2012 to December 2019 at our institution.All these patients had received at least one cycle of a combination therapy consisting of intrathecal methotrexate(MTX)and systemic chemotherapy.Clinical and pathological data were analyzed to explore the outcome of GBM patients with LMD and to determine the most effective treatment.RESULTS Twenty-six patients were enrolled in this study.The median time from GBM diagnosis to LMD development was 9.3 mo(range:2-59 mo).The median overall survival of LMD patients from diagnosis to after receiving systemic chemotherapy in combination with intrathecal MTX was 10.5 mo(range:2-59 mo).In the Cox univariate analysis,gross resection of tumor(P=0.022),Karnofsky performance status(KPS)>60(P=0.002),and Ommaya reservoir implant(P<0.001)were correlated with survival.Multivariate analysis showed that KPS>60(P=0.037)and Ommaya reservoir implant(P=0.014)were positive factors correlated with survival.Myelotoxicity and gastrointestinal reactions were the common toxicities of this combination therapy.According to Common Terminology Criteria of Adverse Events 4.03,most of the patients presented with toxicity less than grade 3.CONCLUSION Intrathecal MTX administration combined with systemic chemotherapy is a potentially effective treatment for patients with GBM and LMD,with mild treatment-related side effects. 展开更多
关键词 GLIOMA GLIOBLASTOMA Leptomeningeal dissemination Intrathecal methotrexate CHEMOTHERAPY
下载PDF
Safe Navigation for UAV-Enabled Data Dissemination by Deep Reinforcement Learning in Unknown Environments 被引量:1
20
作者 Fei Huang Guangxia Li +3 位作者 Shiwei Tian Jin Chen Guangteng Fan Jinghui Chang 《China Communications》 SCIE CSCD 2022年第1期202-217,共16页
Unmanned aerial vehicles(UAVs) are increasingly considered in safe autonomous navigation systems to explore unknown environments where UAVs are equipped with multiple sensors to perceive the surroundings. However, how... Unmanned aerial vehicles(UAVs) are increasingly considered in safe autonomous navigation systems to explore unknown environments where UAVs are equipped with multiple sensors to perceive the surroundings. However, how to achieve UAVenabled data dissemination and also ensure safe navigation synchronously is a new challenge. In this paper, our goal is minimizing the whole weighted sum of the UAV’s task completion time while satisfying the data transmission task requirement and the UAV’s feasible flight region constraints. However, it is unable to be solved via standard optimization methods mainly on account of lacking a tractable and accurate system model in practice. To overcome this tough issue,we propose a new solution approach by utilizing the most advanced dueling double deep Q network(dueling DDQN) with multi-step learning. Specifically, to improve the algorithm, the extra labels are added to the primitive states. Simulation results indicate the validity and performance superiority of the proposed algorithm under different data thresholds compared with two other benchmarks. 展开更多
关键词 Unmanned aerial vehicles(UAVs) safe autonomous navigation unknown environments data dissemination dueling double deep Q network(dueling DDQN)
下载PDF
上一页 1 2 19 下一页 到第
使用帮助 返回顶部