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Bringing Hope to Ailing Women--Chinese doctor endears herself to Malawian women with her dedication and expertise in cervical cancer treatment
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作者 EDWIN NYIRONGO 《ChinAfrica》 2025年第6期44-45,共2页
To many people,especially women at the Mzuzu Central Hospital(MCH)in the Northern Region of Malawi,Du Shumin is a familiar and respected name.This is because of her expertise in cervical cancer treatment and the many ... To many people,especially women at the Mzuzu Central Hospital(MCH)in the Northern Region of Malawi,Du Shumin is a familiar and respected name.This is because of her expertise in cervical cancer treatment and the many women,some of whom never dreamed of living a normal life again,that Du has helped. 展开更多
关键词 malawi mzuzu central hospital dedication china doctor women health EXPERTISE HOPE cervical cancer
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The Legacy of Synthetic Bovine Insulin:A Journey of Dedication,Collaboration and Innovation
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作者 XU Ke RAN Huiwen +4 位作者 LIN Binxia QIAN Keyang HU Guangjing YU Yibin ZHOU Jinqiu 《Bulletin of the Chinese Academy of Sciences》 2024年第3期158-163,共6页
The artificial total synthesis of crystalline bovine insulin is a milestone achievement of Chinese scientists in the field of life sciences since the founding of the People’s Republic of China.The article briefly rev... The artificial total synthesis of crystalline bovine insulin is a milestone achievement of Chinese scientists in the field of life sciences since the founding of the People’s Republic of China.The article briefly reviews several historical events of the artificial total synthesis of bovine insulin,with the intentions of summarizing the historical experience of dedication,cooperation and innovation embedded in this achievement,and inspiring contemporary Chinese scientists. 展开更多
关键词 artificial synthesis of insulin spirit of dedication and innovation
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Desire Dedication Discipline:The American Dream of Team3D
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作者 柚子 《电子竞技》 2006年第5期32-34,共3页
TEAM3D热情、奉献与纪律:Team3D的美国梦Desire Dedication Discipline:The American Dream of Team3D Team 3D的故事,是一个美国梦的故事。至少Team 3D的历程,符合无数青年人的梦想。在一种具有包容性的文化下成长起来的年轻人,多元... TEAM3D热情、奉献与纪律:Team3D的美国梦Desire Dedication Discipline:The American Dream of Team3D Team 3D的故事,是一个美国梦的故事。至少Team 3D的历程,符合无数青年人的梦想。在一种具有包容性的文化下成长起来的年轻人,多元化的生活方式的理念已经深入人心,在这样的背景下,成功的外延被无限的放大。从Volcanno登上华盛顿邮报开始,标志着Team3D代表的独立自主的思想被西方主流社会所认知。 展开更多
关键词 纪律性 Desire dedication Discipline:The American Dream of Team3D
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Lifelong dedication and ever-admirable stature-in commemoration of the first anniversary of Mr.Mao Shisong’s passing
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作者 Jinglong Wang Jixiang Zhou +2 位作者 Xiaolong Pu Yincai Tang Yan Li 《Statistical Theory and Related Fields》 CSCD 2024年第3期243-250,共8页
On January 16,2023,at 14:01,our beloved and esteemed Mr.Mao Shisong passed away at the age of 87,leaving us with great sorrow.In the days following Mr.Mao’s departure,our sorrow for his absence has become increasingl... On January 16,2023,at 14:01,our beloved and esteemed Mr.Mao Shisong passed away at the age of 87,leaving us with great sorrow.In the days following Mr.Mao’s departure,our sorrow for his absence has become increasingly profound,and our remembrance of him is ever more vivid.As we publish this special commemorative issue in Chinese Journal of Applied Probability and Statistics for the first anniversary of Mr.Mao’s death,we honor his life of ceaseless endeavor,his dedication to fairness and capability,and his pioneering spirit of innovation. 展开更多
关键词 ever admirable stature PASSING sorrow anniversary COMMEMORATION remembrance applied probability statistics lifelong dedication
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Music teacher gives a student a heartfelt gift
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作者 霍雪波 《疯狂英语(新读写)》 2025年第1期56-57,78,共3页
Even when kids dont realize it,teachers listen with their ears and their hearts.So many teachers dedi-cate their lives to education and helping us raise good kids.Some of them go so far above and beyond the call of du... Even when kids dont realize it,teachers listen with their ears and their hearts.So many teachers dedi-cate their lives to education and helping us raise good kids.Some of them go so far above and beyond the call of duty that it makes you wonder if they are really angels in disguise.Stacy Caldwell is one of those teachers. 展开更多
关键词 education TEACHERS ANGELS dedication hearts DISGUISE GIFTS
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Nurturing Charity With Love and Dedication
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《Beijing Review》 2008年第29期36-38,共3页
Zhang Tian,President of the World Peace Charity Foundation,was born in Shandong Province’s Zoucheng,the hometown of ancient Chinese philoso- pher Mengcius.
关键词 ZHANG In World Nurturing Charity With Love and dedication VISION PROJECT
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Effects of professional nursing intervention on compliance and adverse events in patients with depression combined with respiratory failure
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作者 Xiao-Yun Zhang Xue-Ling Wu +1 位作者 Nai-Ting Du Xue-Qin Lu 《World Journal of Psychiatry》 2025年第11期196-204,共9页
BACKGROUND Depression is a common psychological disorder often associated with genetic,neurobiological,and psychosocial factors.This condition is characterized by low mood and decreased conscious activity and can lead... BACKGROUND Depression is a common psychological disorder often associated with genetic,neurobiological,and psychosocial factors.This condition is characterized by low mood and decreased conscious activity and can lead to severe consequences such as suicidal thoughts.Respiratory failure,a disorder of pulmonary ventilation and gas exchange,is frequently complicated by depression,aggravating the condition and creating complications in treatment.Patients with both conditions tend to exhibit poor compliance with medical advice,resulting in adverse outcomes such as sleep disorders,arrhythmias,and electrolyte imbalances.Therefore,effective nursing interventions are crucial for improving patient outcomes.While routine nursing care can provide basic support,dedicated nursing,which involves specialized and personalized care by highly trained professionals,may offer additional benefits.AIM To examine the effect of dedicated nursing intervention on medical advice compliance and adverse event incidence in patients with depression complicated by respiratory failure.METHODS A total of 160 patients with depression complicated by respiratory failure admitted to the Second Affiliated Hospital of Soochow University from January to December 2024 were randomly categorized into a control group(n=80)receiving routine nursing care and observation group(n=80)receiving routine nursing combined with dedicated nursing care.The establishment of a specialized nursing team;the development of a personalized nursing plan;and the implementation of comprehensive care strategies targeting emotional support,sleep improvement,pulmonary function enhancement,and adherence to medical advice were included in the dedicated nursing intervention.Emotional state[evaluated using the Self-Rating Depression Scale(SDS)],sleep quality[assessed using the Pittsburgh Sleep Quality Index(PSQI)],hope level[measured using the Herth Hope Scale(HHS)],pulmonary function[comprising forced vital capacity(FVC)and forced expiratory volume in the first second(FEV1)],exercise endurance[6-minute walk distance test(6MWD)],compliance with medical advice,and incidence of adverse events were compared between the two groups.RESULTS No significant differences were observed in SDS,PSQI,HHS,FVC,FEV1,6MWD,or compliance with medical advice between the two groups(P>0.05)before the intervention.However,after the intervention,the control group exhibited significantly lower SDS and PSQI scores;higher HHS scores;greater improvements in FVC,FEV1,and 6MWD;and higher compliance with medical advice compared with the control group(P<0.05).In addition,the incidence of adverse events was significantly lower in the control group(P<0.05).CONCLUSION Dedicated nursing intervention significantly improves emotional state,sleep quality,hope level,pulmonary function,exercise endurance,and compliance with medical advice while reducing adverse events in patients with depression complicated by respiratory failure.Therefore,dedicated nursing appears to be an effective approach to enhance patient outcomes in this population. 展开更多
关键词 DEPRESSION Respiratory failure Dedicated nursing Compliance with medical advice Adverse events
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Major injury of the external iliac artery during robotic nephroureterectomy:Examining the surgical management and unexpected pathology finding
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作者 Riccardo Bertolo Luca Roggero +11 位作者 Claudio Brancelli Giovanni Corghi Filippo Migliorini Alessandro Veccia Luca Mezzetto Gian Franco Veraldi Anna Caliò Matteo Brunelli Guido Martignoni Antonio Benito Porcaro Maria Angela Cerruto Alessandro Antonelli 《Asian Journal of Urology》 2025年第2期275-277,共3页
Dear Editor,We aimed to describe the management of the intraoperative injury of the right external iliac artery that occurred during robot-assisted right nephroureterectomy with bladder cuff excision.Surgery was sched... Dear Editor,We aimed to describe the management of the intraoperative injury of the right external iliac artery that occurred during robot-assisted right nephroureterectomy with bladder cuff excision.Surgery was scheduled for suspected urothelial carcinoma of the distal ureter in a 60-year-old woman.The patient involved in the present research signed a dedicated form to consent to the publication of images and/or information about her.Past medical history included Brugada syndrome diagnosed in 2015,and hypercholesterolemia.Past surgical history included one cesarean section only.Family history included ovarian cancer(sister),colorectal cancer(mother),and kidney cancer(father). 展开更多
关键词 urothelial carcinoma right external iliac artery external iliac artery injury dedicated form unexpected pathology brugada syndrome surgical management robotic nephroureterectomy
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Comparing early surgical outcomes between total neoadjuvant therapy and standard long course chemoradiotherapy for rectal cancer
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作者 Salman Ahmed Abdul Jabbar Amadora Li En Choo +2 位作者 Neng-Wei Wong James Chi-Yong Ngu Nan-Zun Teo 《World Journal of Gastrointestinal Oncology》 2025年第11期81-90,共10页
BACKGROUND Total neoadjuvant therapy(TNT)has been proposed as an advancement over standard long-course chemoradiotherapy(LCCRT)for the treatment of locally advanced rectal cancer(LARC).It has been suggested that TNT e... BACKGROUND Total neoadjuvant therapy(TNT)has been proposed as an advancement over standard long-course chemoradiotherapy(LCCRT)for the treatment of locally advanced rectal cancer(LARC).It has been suggested that TNT enhances resect-ability,improves treatment compliance,increases the rate of pathological comp-lete response,and reduces the risk of systemic recurrence.However,concerns have been raised that the prolonged interval to surgery associated with TNT,particularly in regimens such as the Rectal Cancer and Preoperative Induction Therapy Followed by Dedicated Operation(RAPIDO)protocol,may exacerbate fibrosis,leading to more technically challenging resections and poorer surgical outcomes.RAPIDO vs LCCRT.METHODS A single-center,retrospective cohort study was conducted of patients with LARC treated with TNT-RAPIDO or standard LCCRT followed by surgical resection between 2014 and 2024.A total of 99 patients with LARC were analyzed,inclu-ding 29 treated with TNT-RAPIDO and 70 treated with standard LCCRT.Demo-graphics,clinicopathological characteristics and early post-operative outcomes were compared between both groups.RESULTS Both groups were comparable in terms of demographics and clinicopathological characteristics.The median interval from initiation of neoadjuvant therapy to Core Tip:Rectal cancer and preoperative induction therapy followed by dedicated operation has emerged as a total neoadjuvant therapy strategy with improved oncological and functional outcomes.The impact of total neoadjuvant therapy on operative difficulty and short-term surgical outcomes,compared with long-course chemoradiotherapy,remains an area of ongoing debate.This cohort study of 99 patients demonstrated that the Rectal Cancer and Preoperative Induction Therapy Followed by Dedicated Operation(RAPIDO)protocol does not increase surgical difficulty or compromise early surgical outcomes compared with long-course chemoradiotherapy.It may also confer a shorter total stoma duration and a lower permanent stoma rate.randomized controlled trials in the future are warranted to more accurately assess the differences between TNT-RAPIDO and LCCRT in relation to oncological outcomes. 展开更多
关键词 Locally advanced rectal cancer Total neoadjuvant therapy Rectal cancer and preoperative induction therapy followed by dedicated operation Long course chemoradiotherapy Early surgical outcomes Retrospective cohort study
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in dedication to Professors Yong Jin and Zhiqing Yu
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作者 Jesse Zhu 《China Particuology》 SCIE EI CAS CSCD 2006年第3期103-103,共1页
This special issue of China PARTICUOLOGY is dedicated to Professors Yong Jin and Zhiqing Yu of Tsinghua University, China, to celebrate over five decades of their careers in chemical engineering research and education... This special issue of China PARTICUOLOGY is dedicated to Professors Yong Jin and Zhiqing Yu of Tsinghua University, China, to celebrate over five decades of their careers in chemical engineering research and education. Prof. Jin graduated in 1959 from Ural Polytechnic College in Svivdelovsk in the former USSR and then completed his post-graduate studies in Tianjin University in China in 1960. Thereafter, he taught at the Chinese University of Science and Technology for 13 years before joining Tsinghua University in 1973. Prof. Yu graduated in 1956 from Tianjin University in China and joined Tsinghua University thereafter. Between 1957 and 1959, Prof. Yu undertook more studies in Moscow Mendeleev Institute of Chemical Technology in the former USSR. During the 1970s, Professors Jin and Yu jointly created the Reaction Engineering Program in the Department of Chemical Engineering at Tsinghua University, which later became one of the largest fluidization research groups in the world, known as FLOTU - Fluidization Laboratory of Tsinghua University. 展开更多
关键词 in dedication to Professors Yong Jin and Zhiqing Yu
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Vice-President Xie Yuan Attends Flying Tiger C-47 Dedication Ceremony
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作者 Chen Ke 《Voice of Friendship》 2017年第2期6-6,共1页
Aceremony was held at the Flying Tiger Guilin Heritage Park on March 25,2017 for the donation of a World War II-era aircraft—a Douglas C-47.CPAFFC Vice-President Xie Yuan read a message from Chinese Vice-Premier Liu ... Aceremony was held at the Flying Tiger Guilin Heritage Park on March 25,2017 for the donation of a World War II-era aircraft—a Douglas C-47.CPAFFC Vice-President Xie Yuan read a message from Chinese Vice-Premier Liu Yandong,in which she extended her sincere welcome and best wishes to the family of General Claire Lee Chennault,veterans of the Flying Tigers and their families。 展开更多
关键词 US Vice-President Xie Yuan Attends Flying Tiger C-47 dedication Ceremony
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CM-MAC:一种基于分簇的多信道车载网MAC协议 被引量:27
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作者 何鹏 阎保平 +1 位作者 李志 孙利民 《计算机研究与发展》 EI CSCD 北大核心 2014年第3期502-510,共9页
车载网VANET是一种应用于智能交通系统的新型无线移动自组织网络(mobile ad hoc network,MANET).随着车辆以及移动ad hoc网络技术的发展,车载网已经成为一个新兴的研究领域.针对VANET中车辆行驶的特征,提出一种拓扑相对稳定的车辆分簇算... 车载网VANET是一种应用于智能交通系统的新型无线移动自组织网络(mobile ad hoc network,MANET).随着车辆以及移动ad hoc网络技术的发展,车载网已经成为一个新兴的研究领域.针对VANET中车辆行驶的特征,提出一种拓扑相对稳定的车辆分簇算法.在此算法基础上,根据专用短程通信(dedicated short range communication,DSRC)标准中控制信道(control channel,CCH)和服务信道(service channel,SCH)的分配,考虑车辆间的无线通信干扰和不同应用的QoS需求,提出一种基于分簇的多信道混合型MAC协议,簇内通信采用非竞争的TDMA机制,簇间通信采用基于竞争的CSMA?CA机制,相邻簇采用不同的服务信道.模拟实验表明,提出的MAC协议在同时满足实时应用的延迟需求和非实时应用的吞吐量方面,优于现有协议. 展开更多
关键词 车载网 分簇算法 车与车通信 专用短程通信 多信道MAC协议 vehicular ad HOC network (VANET) dedicated short range communication (DSRC)
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The historical evolution of the regulations for the Florence Nightingale Medal 被引量:1
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作者 Qian Wang Rui-Fang Zhu Zhi-Guang Duan 《Frontiers of Nursing》 CAS 2018年第1期1-5,共5页
Objective: This study aimed to explore the 100-year changes in regulations for the Florence Nightingale Medal.Methods: We used the announcements of the Florence Nightingale Medal awards as the research object to analy... Objective: This study aimed to explore the 100-year changes in regulations for the Florence Nightingale Medal.Methods: We used the announcements of the Florence Nightingale Medal awards as the research object to analyze-via historical and inductive methods-the regulations for receiving the Florence Nightingale Medal.Results: In the award years, the greatest number of winners per award year was 71 and the lowest was 12. The medal was initially exclusively awarded to living people but evolved to include both living and deceased people. The recipients were balanced among all countries. The gender of the winners showed a changing trend from being limited to only females to including both males and females.There was also a shift from emphasis on only dedication of the recipient to equal emphasis on both dedication and innovation.Conclusions: The selection criteria for recipients of the Florence Nightingale Medal evolved from consideration of those showing only dedication to equal consideration of both dedication and innovation. 展开更多
关键词 FLORENCE NIGHTINGALE MEDAL FLORENCE NIGHTINGALE MEDAL AWARDS dedication innovation evolution REGULATIONS
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应用于核电厂安全控制显示装置的QNX操作系统关键特性测试方法研究
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作者 张海滨 黄君龙 +1 位作者 曹宗生 齐敏 《自动化博览》 2018年第12期74-77,共4页
在国内使用商业操作系统研发核安全级设备尚未有先例,为了使商用操作系统QNX能应用于安全级设备,国际上通常采用NRC的CGD方法,对关键特性进行验证;其中关键特性测试是最有效的验证方法,但需要确定所做测试的合适范围保证商用软件能够应... 在国内使用商业操作系统研发核安全级设备尚未有先例,为了使商用操作系统QNX能应用于安全级设备,国际上通常采用NRC的CGD方法,对关键特性进行验证;其中关键特性测试是最有效的验证方法,但需要确定所做测试的合适范围保证商用软件能够应用于核安全设备产品中。本文在接口函数关键特性基础上提出了增加功能、性能测试的简单易行方法,对使用到的功能、性能、函数接口进行测试,保证了核安全设备所使用到的功能的质量;该方法已在核电厂安全显示装置的开发中应用,效果良好,极大节省了成本,加快了产品开发周期,可以推广到其他核级产品的研发中。 展开更多
关键词 核电厂 SCID(安全控制显示系统) QNX CGD(Commercial Grade dedication) 关键特性
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THE US TRANSURANIUM AND URANIUM REGISTRIES (USTUR): A FIVE-DECADE FOLLOWUP OF PLUTONIUM AND URANIUM WORKERS
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《辐射防护》 CAS CSCD 北大核心 2019年第4期349-354,共6页
Abstract:Dedication: The research of the US Transuranium and Uranium Registries relies heavily upon postmortem autopsy findings and radiochemical analysis of tissues. The enormous debt owed to those now-deceased regis... Abstract:Dedication: The research of the US Transuranium and Uranium Registries relies heavily upon postmortem autopsy findings and radiochemical analysis of tissues. The enormous debt owed to those now-deceased registrants who unselfishly voluntarily participated in the US Transuranium and Uranium Registries program through postmortem donation of their tissues and to those stillliving registrants who have volunteered to be future postmortem tissue donors is hereby acknowledged with gratitude. The scientific findings derived from postmortem analysis of these tissues have been instrumental in advancing our understanding of the actinide elements in humans and have led to refinement, validation, and confidence in safety standards for those who work with these elements as well as for the general public. To these generous and anonymous persons who made this ultimate contribution, this paper is dedicated with great thanks and admiration. 展开更多
关键词 dedication great THANKS ADMIRATION
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Herpesviruses: epidemiology, pathogenesis, and interventions 被引量:8
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作者 Ke Lan Min-Hua Luo 《Virologica Sinica》 SCIE CAS CSCD 2017年第5期347-348,共2页
This special issue of the journal is dedicated to the recent research progress on human herpesviruses(HHVs).Human herpesviruses are distributed worldwide,and more than 90%of adults are infected by one or multiple HHVs... This special issue of the journal is dedicated to the recent research progress on human herpesviruses(HHVs).Human herpesviruses are distributed worldwide,and more than 90%of adults are infected by one or multiple HHVs.The HHV family contains three sub-families:the alpha sub-family[herpes simplex virus 1(HSV-1),HSV-2, 展开更多
关键词 SIMPLEX PATHOGENESIS HERPES EPIDEMIOLOGY infected spherical dedicated replication interferon ZOSTER
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Oncogenic viruses and cancer 被引量:3
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作者 Guangxiang George Luo Jing-hsiung James Ou 《Virologica Sinica》 SCIE CAS CSCD 2015年第2期83-84,共2页
This special issue of the journal is dedicated to the important topic of oncogenic viruses and cancer.It contains seven review articles covering all known oncogenic viruses except for human T-lymphotropic virus type1(... This special issue of the journal is dedicated to the important topic of oncogenic viruses and cancer.It contains seven review articles covering all known oncogenic viruses except for human T-lymphotropic virus type1(HTLV-1).These review articles are contributed by experts on specific viruses and their associated human cancers.Viruses account for about 20%of total human cancer cases.Although many viruses can cause various tumors in animals,only seven of them 展开更多
关键词 covering DEDICATED PATHOGENESIS alterations HERPESVIRUS DETAILS replication REFERENCES specif CARCINOGENESIS
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Intelligent Reflecting Surfaces Enabled Cognitive Internet of Things Based on Practical Pathloss Model 被引量:6
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作者 Zheng Chu Pei Xiao +2 位作者 De Mi Hongzhi Chen Wanming Hao 《China Communications》 SCIE CSCD 2020年第12期1-16,共16页
In this paper,we aim to unlock the potential of intelligent reflecting surfaces(IRSs)in cognitive internet of things(loT).Considering that the secondary IoT devices send messages to the secondary access point(SAP)by s... In this paper,we aim to unlock the potential of intelligent reflecting surfaces(IRSs)in cognitive internet of things(loT).Considering that the secondary IoT devices send messages to the secondary access point(SAP)by sharing the spectrum with the primary network,the interference is introduced by the IoT devices to the primary access point(PAP)which profits from the IoT devices by pricing the interference power charged by them.A practical path loss model is adopted such that the IRSs deployed between the IoT devices and SAP serve as diffuse scatterers,but each reflected signal can be aligned with its own desired direction.Moreover,two transmission policies of the secondary network are investigated without/with a successive interference cancellation(SIC)technique.The signal-to-interference plus noise ratio(SINR)balancing is considered to overcome the nearfar effect of the IoT devices so as to allocate the resource fairly among them.We propose a Stackelberg game strategy to characterize the interaction between primary and secondary networks.For the proposed game,the Stackelberg equilibrium is analytically derived to optimally obtain the closed-form solution of the power allocation and interference pricing.Numerical results are demonstrated to validate the performance of the theoretical derivations. 展开更多
关键词 dedicated intelligent reflecting surfaces internet of things practical path loss cognitive network Stackelberg game
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Novel integration of extreme learning machine and improved Harris hawks optimization with particle swarm optimization-based mutation for predicting soil consolidation parameter 被引量:4
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作者 Abidhan Bardhan Navid Kardani +3 位作者 Abdel Kareem Alzo'ubi Bishwajit Roy Pijush Samui Amir HGandomi 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2022年第5期1588-1608,共21页
The study proposes an improved Harris hawks optimization(IHHO) algorithm by integrating the standard Harris hawks optimization(HHO) algorithm and mutation-based search mechanism for developing a high-performance machi... The study proposes an improved Harris hawks optimization(IHHO) algorithm by integrating the standard Harris hawks optimization(HHO) algorithm and mutation-based search mechanism for developing a high-performance machine learning solution for predicting soil compression index. HHO is a newly introduced meta-heuristic optimization algorithm(MOA) used to solve continuous search problems.Compared to the original HHO, the proposed IHHO can evade trapping in local optima, which in turn raises the search capabilities and enhances the search mechanism relying on mutation. Subsequently, a novel meta-heuristic-based soft computing technique called ELM-IHHO was established by integrating IHHO and extreme learning machine(ELM) to estimate soil compression index. A sum of 688 consolidation test data was collected for this purpose from an ongoing dedicated freight corridor railway project. To evaluate the generalization capability of the proposed ELM-IHHO model, a detailed comparison between ELM-IHHO and other well-established MOAs, such as particle swarm optimization,genetic algorithm, and biogeography-based optimization integrated with ELM, was performed. Based on the outcomes, the ELM-IHHO model exhibits superior performance over the other MOAs in predicting soil compression index. 展开更多
关键词 Compression index Artificial intelligence Swarm intelligence Meta-heuristic optimization Dedicated freight corridor
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Cluster-Based Stable BSM Dissemination System for Safe Autonomous Platooning 被引量:3
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作者 Jaehwan Lee Suhwan Kwak +1 位作者 Seungwoo Park Sangoh Park 《Computers, Materials & Continua》 SCIE EI 2022年第4期321-338,共18页
Recently,the importance of vehicle safety supporting system has been highlighted as autonomous driving and platooning has attracted the researchers.To ensure driving safety,each vehicle must broadcast a basic safety m... Recently,the importance of vehicle safety supporting system has been highlighted as autonomous driving and platooning has attracted the researchers.To ensure driving safety,each vehicle must broadcast a basic safety message(BSM)every 100 ms.However,stable BSM exchange is difficult because of the changing environment and limited bandwidth of vehicular wireless communication.The increasing number of vehicles on the road increases the competition to access wireless networks for BSM exchange;this increases the packet collision rate.An increased packet collision rate impairs the transmission and reception of BSM information,which can easily cause a traffic accident.We propose a solution,the vehicular safety support system(V3S),which exchanges BSMs reliably even when many vehicles are on the road.The V3S uses a clustering scheme to decrease network traffic by reducing the amount of data exchanged between a vehicle and the roadside unit(RSU).In addition,the V3S reduces the collision rate of wireless network packets by broadcasting the vehicle’s BSM in an allocated timeslot using the time division multiple access(TDMA)MAC protocol.The V3S also deals with insufficient bandwidth for dedicated short-range communications(DSRC)by changing DSRC channels according to traffic flow.In evaluating the packet error rate for stable BSM packet delivery,the V3S demonstrates an excellent packet error rate of less than 1%,compared to the 802.11p with its packet error rate of 82%. 展开更多
关键词 Road vehicles communication systems clustering methods vehicular networks basic safety message dedicated short-range communication
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