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A New Citation Recommendation Strategy Based on Term Functions in Related Studies Section 被引量:2
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作者 Haihua Chen 《Journal of Data and Information Science》 CSCD 2021年第3期75-98,共24页
Purpose:Researchers frequently encounter the following problems when writing scientific articles:(1)Selecting appropriate citations to support the research idea is challenging.(2)The literature review is not conducted... Purpose:Researchers frequently encounter the following problems when writing scientific articles:(1)Selecting appropriate citations to support the research idea is challenging.(2)The literature review is not conducted extensively,which leads to working on a research problem that others have well addressed.The study focuses on citation recommendation in the related studies section by applying the term function of a citation context,potentially improving the efficiency of writing a literature review.Design/methodology/approach:We present nine term functions with three newly created and six identified from existing literature.Using these term functions as labels,we annotate 531 research papers in three topics to evaluate our proposed recommendation strategy.BM25 and Word2vec with VSM are implemented as the baseline models for the recommendation.Then the term function information is applied to enhance the performance.Findings:The experiments show that the term function-based methods outperform the baseline methods regarding the recall,precision,and F1-score measurement,demonstrating that term functions are useful in identifying valuable citations.Research limitations:The dataset is insufficient due to the complexity of annotating citation functions for paragraphs in the related studies section.More recent deep learning models should be performed to future validate the proposed approach.Practical implications:The citation recommendation strategy can be helpful for valuable citation discovery,semantic scientific retrieval,and automatic literature review generation.Originality/value:The proposed citation function-based citation recommendation can generate intuitive explanations of the results for users,improving the transparency,persuasiveness,and effectiveness of recommender systems. 展开更多
关键词 Citation recommendation term function Citation context Related studies section BM25 Word2vec
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On Chinese-English Translation of Disease and Syndrome Terms in Shang Han Lun from the Perspective of Functional Equivalence Theory
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作者 喻惠芳 倪天鸣 《海外英语》 2015年第19期148-149,155,共3页
Shang Han Lun is one of the most famous and important traditional medical books in China,so many translation versions of it have emerged.Based on the comparison of examples taken from two of these translation versions... Shang Han Lun is one of the most famous and important traditional medical books in China,so many translation versions of it have emerged.Based on the comparison of examples taken from two of these translation versions,Young Jie De ' s Shang Han Lun Explained and Huang Hai s Introduction to Treatise on Exogenous Febrile Disease,the paper points out that Nida s Functional Equivalence Theory provides a new idea for the translation of Disease and Syndrome Terms in TCM that literal translation,liberal translation and transliteration can be adopted appropriately to make readers of translation versions understand TCM accurately and easily. 展开更多
关键词 translation DISEASE and SYNDROME term Shang HAN Lun functional EQUIVALENCE
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The Jacobi elliptic function-like exact solutions to two kinds of KdV equations with variable coefficients and KdV equation with forcible term 被引量:10
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作者 套格图桑 斯仁到尔吉 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第12期2809-2818,共10页
By use of an auxiliary equation and through a function transformation, the Jacobi elliptic function wave-like solutions, the degenerated soliton-like solutions and the triangle function wave solutions to two kinds of ... By use of an auxiliary equation and through a function transformation, the Jacobi elliptic function wave-like solutions, the degenerated soliton-like solutions and the triangle function wave solutions to two kinds of Korteweg de Vries (KdV) equations with variable coefficients and a KdV equation with a forcible term are constructed with the help of symbolic computation system Mathematica, where the new solutions are also constructed. 展开更多
关键词 auxiliary equation KdV equation with variable coefficients KdV equation with a forcible term Jacobi elliptic function-like exact solutions
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Effect of donor age on graft function and longterm survival of recipients undergoing living donor liver transplantation 被引量:4
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作者 Kai Wang Wen-Tao Jiang +2 位作者 Yong-Lin Deng Cheng Pan Zhong-Yang Shen 《Hepatobiliary & Pancreatic Diseases International》 SCIE CAS CSCD 2015年第1期50-55,共6页
BACKGROUND: Donor shortage is the biggest obstacle in organ transplantation. Living donor liver transplantation(LDLT) has been considered as a valuable approach to shortening waiting time. The objectives of this st... BACKGROUND: Donor shortage is the biggest obstacle in organ transplantation. Living donor liver transplantation(LDLT) has been considered as a valuable approach to shortening waiting time. The objectives of this study were to investigate the feasibility of utilizing donors older than 50 years in LDLT and to evaluate the graft function and recipient survival.METHODS: All LDLT cases(n=159) were divided into the older(donor age ≥50 years, n=10) and younger(donor age 〈50 years,n=149) donor groups. Donor graft and recipient condition pre-,intra- and post-operation were compared between the two groups.In particular, graft functions and recipient survivals were analyzed.RESULTS: The median donor age was 58.5(52.5-60.0) years in the older donor group and 25.0(23.0-32.0) in the younger donor group. There was no significant difference in cold ischemic time, anhepatic phase and operation time between the older and younger donor groups(P〉0.05). However, the volume of red blood cell transfused in operation was greater in the older donor group than in the younger donor group(1900 vs 1200 m L, P=0.023). The 1-, 3- and 5-year graft survival rates were 90%, 80% and 80% for the older donor group, and 92%, 87% and 87% for the younger donor group, respectively(P=0.459).The 1-, 3- and 5-year survival rates were 100%, 90% and 90% for recipients with older grafts, and 93%, 87% and 87% for those with younger grafts, respectively(P=0.811).CONCLUSION: It is safe for a LDLT recipient to receive liver from donors older than 50 years, and there is no significant adverse effect on graft function and long-term patients’ survival. 展开更多
关键词 living donor liver transplantation donor age GRAFT liver function long-term survival
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Safety and Quality of Care Evaluation in Japanese Long-Term Facilities Focused on the Activity Condition and Cognitive Function of Residents 被引量:1
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作者 Sayuri Kaneko 《Open Journal of Nursing》 2020年第2期131-142,共12页
Objective: Currently, standards for evaluating long-term care facilities do not exist in Japan. This study aimed to evaluate the quality of healthcare services in Japan’s long-term care facilities and identify the st... Objective: Currently, standards for evaluating long-term care facilities do not exist in Japan. This study aimed to evaluate the quality of healthcare services in Japan’s long-term care facilities and identify the structural and process indicators associated with the facilities’ outcome indicators. Methods: This retrospective study assessed changes in residents’ abilities to participate in physical activities, their cognitive function, and their vulnerability to injuries. From 2012 to 2013, we collected information on the healthcare services at 1067 long-term care facilities registered with Japan’s Welfare, Health and Medical Care Information Network in the Welfare and Medical Service Agency. We examined 12 structural indicators, 26 process indicators, and 7 outcome indicators. We used multivariate linear regression models adjusted to analyze relationships between outcome indicators and structural or process indicators. Results: Residents’ activity and cognitive function indicators either improved by 80% - 90% or were maintained for one year. The Geriatric Functional Independence Measures, the Barthel Index, and holding conferences related to care were all considered activities of daily living. Three adverse events—tumbles and falls, behavioral problems, and aimless wandering or leaving the facility without permission—were factors that restricted residents’ behavior and number of residents per care staff member. Conclusions: Maintaining or improving levels of independence and cognition in daily living requires a care process system that enables ongoing monitoring of residents’ activities of daily living and cognitive functioning. Ensuring the safety of residents and improving the quality of care in long-term care facilities without securing adequate care staff are not possible. 展开更多
关键词 Activity CONDITION Cognitive function LONG-term CARE Facility SAFETY Quality of CARE
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Functions of Metaphorical Use of Address Terms
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作者 Zhanfang Li 《Sino-US English Teaching》 2006年第9期69-73,共5页
Researches in metaphor and addressing have both aroused great interests among scholars. Metaphorical use of address terms will be one focus of this paper. Functions of address terms have been investigated a lot, but e... Researches in metaphor and addressing have both aroused great interests among scholars. Metaphorical use of address terms will be one focus of this paper. Functions of address terms have been investigated a lot, but emotional functions are less emphasized. Therefore, this paper will make a tentative study of how people metaphorically use address terms to express the addresser's affect towards the addressee within the framework of Appraisal Theory. 展开更多
关键词 address terms metaphor function appraisal theory
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Polynomial Functions Composed of Terms with Non-Integer Powers
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作者 Serdar Beji 《Advances in Pure Mathematics》 2021年第10期791-806,共16页
Polynomial functions containing terms with non-integer powers are studied to disclose possible approaches for obtaining their roots as well as employing them for curve-fitting purposes. Several special cases represent... Polynomial functions containing terms with non-integer powers are studied to disclose possible approaches for obtaining their roots as well as employing them for curve-fitting purposes. Several special cases representing equations from different categories are investigated for their roots. Curve-fitting applications to physically meaningful data by the use of fractional functions are worked out in detail. Relevance of this rarely worked subject to solutions of fractional differential equations is pointed out and existing potential in related future work is emphasized. 展开更多
关键词 RATIONAL Irrational Imaginary and Transcendental Powers Roots of functions with Variables of Non-Integer Powers Curve-Fitting by functions Incorporating terms with Rational Powers Fractional Differential Equations
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Clinical Significance of Pulmonary Function Tests in Long-Term Survivors after Myeloablative Allogeneic Hematopoietic Stem Cell Transplantation
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作者 Kenji Matsumoto Satomi Ito +4 位作者 Wataru Yamamoto Eriko Ogusa Atsuo Maruta Yoshiaki Ishigatsubo Heiwa Kanamori 《Open Journal of Blood Diseases》 2013年第1期6-12,共7页
We retrospectively assessed long-term pulmonary function in adults surviving for ≥5 years after myeloablative allogeneic hematopoietic stem cell transplantation and identified risk factors for late-onset noninfectiou... We retrospectively assessed long-term pulmonary function in adults surviving for ≥5 years after myeloablative allogeneic hematopoietic stem cell transplantation and identified risk factors for late-onset noninfectious pulmonary complications. Among 174 patients undergoing transplantation for hematologic malignancies between May 1994 and December 2004, 81 long-term survivors were evaluated. Pulmonary function tests (PFTs) were performed before conditioning, 3 months and 1 year after transplantation, and then annually. Eight patients (10%) had abnormal pulmonary function before transplantation, but this was not associated with late changes in PFTs. Patients with chronic graft-versus-host disease (GVHD) showed a significant decline of lung function after 3 years when compared with patients without chronic GVHD. Abnormal pretransplantation lung function was associated with pulmonary chronic GVHD according to National Institutes of Health criteria (score 0, n = 58;score 1, n = 14;score 2, n = 6;score 3, n = 3). Five patients with late-onset noninfectious pulmonary complications showed a decline of lung function at 1 year after transplantation. Only chronic GVHD was significantly related to late-onset noninfectious pulmonary complications. In conclusion, abnormal lung function before transplantation may be associated with a decline in pulmonary function within 1 year after transplantation, but late-onset noninfectious pulmonary complications could not be predicted from pretransplantation lung function. 展开更多
关键词 Long-term SURVIVOR PULMONARY function Tests LATE-ONSET Noninfectious PULMONARY COMPLICATIONS MYELOABLATIVE ALLOGENEIC Stem Cell Transplantation
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Long-term renal function, complications and life expectancy in living kidney donors
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作者 Masahiko Okamoto 《World Journal of Transplantation》 2012年第1期5-8,共4页
Living kidney transplantation is now a widely accepted treatment for end stage renal disease(ESRD) because it provides excellent outcomes for recipients. However, long-term outcomes of living kidney donors have not be... Living kidney transplantation is now a widely accepted treatment for end stage renal disease(ESRD) because it provides excellent outcomes for recipients. However, long-term outcomes of living kidney donors have not been well understood. Because securing the safety of the donor is essential to the continued success of this procedure, we reviewed articles discussing long-term outcomes of living kidney donors. Most studies found no decrease in long-term survival or progressive renal dysfunction in previous kidney donors. Moreover, the prevalence of hypertension was comparable to that expected in the general population, although some did report otherwise. Urinary protein showed small increases in this population and was associated with hypertension and a lower glomerular filtration rate. Quality of life following living kidney donation seems to be better than the national norm. We also encountered several reports of ESRD in previous living kidney donors. Regular follow-up of kidney donors is recommended and future controlled, prospective studies will better delineate risk factors which cause health problems following living kidney donation. 展开更多
关键词 Living kidney DONOR LONG-term survival Hypertension PROTEINURIA RENAL function Quality of LIFE
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足月妊娠孕妇血栓弹力图和Sonoclot凝血和血小板功能参考值范围及相关性的探讨
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作者 董林 张媛 +3 位作者 徐菲 包进 蒋炎兴 张帆 《标记免疫分析与临床》 CAS 2024年第8期1437-1441,共5页
目的建立健康足月妊娠孕妇血栓弹力图和Sonoclot凝血和血小板功能检测参考值范围。方法选取入住我院产科无凝血系统疾病等情况的足月妊娠孕妇160例,通过血栓弹力图(TEG)和Sonoclot检测,统计分析R值、K值、Angle值、MA值以及ACT、CR、PF... 目的建立健康足月妊娠孕妇血栓弹力图和Sonoclot凝血和血小板功能检测参考值范围。方法选取入住我院产科无凝血系统疾病等情况的足月妊娠孕妇160例,通过血栓弹力图(TEG)和Sonoclot检测,统计分析R值、K值、Angle值、MA值以及ACT、CR、PF,建立其参考值范围。结果160例足月妊娠孕妇的TEG和Sonoclot检测,至少一项超过厂商推荐参考值范围为异常,异常率TEG为71.70%,Sonoclot为56.87%。本研究中TEG指标的参考值范围:R3.4~7.9min,K0.9~3.0min,Angle 62.9~72.9°,MA 48.0~83.6mm;ACT 125.5~184.5s、CR 20.2~63.6clot/min、PF 0.6~4.7。在两种检测方法之间,所有检验指标间仅ACT与R值有相关性(P<0.05)。结论妊娠期孕妇的凝血状态与非孕正常人群有着明显的差别,其厂商提供在TEG和Sonoclot凝血与血小板功能分析的参考值范围不适用于足月妊娠孕妇,需要重新建立这两个项目的参考值范围以便临床诊疗的准确进行。 展开更多
关键词 血栓弹力图 Sonoclot凝血与血小板功能 足月妊娠 参考值
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宫颈癌患者根治性宫颈切除术后采用康艾注射液治疗的效果及对免疫功能的影响
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作者 李亚星 张俊勤 《中国当代医药》 CAS 2024年第3期100-103,共4页
目的探析根治性宫颈切除术宫颈癌患者术后采用康艾注射液治疗的效果及对免疫功能的影响。方法选取2020年4月至2021年4月河北省人民医院收治的72例宫颈癌术后患者作为研究对象,按照随机数字表法分为对照组(36例)与观察组(36例),对照组采... 目的探析根治性宫颈切除术宫颈癌患者术后采用康艾注射液治疗的效果及对免疫功能的影响。方法选取2020年4月至2021年4月河北省人民医院收治的72例宫颈癌术后患者作为研究对象,按照随机数字表法分为对照组(36例)与观察组(36例),对照组采用紫杉醇结合顺铂进行常规化疗,观察组在对照组基础上采用康艾注射液方法治疗。比较两组患者的免疫功能指标、炎症因子指标及不良反应发生率。结果观察组患者治疗后免疫指标水平高于对照组,不良反应发生率低于对照组,差异有统计学意义(P<0.05);观察组γ干扰素(IFN-γ)、白细胞介素-2(IL-2)水平高于对照组,白细胞介素-6(IL-6)、白细胞介素-10(IL-10)水平低于对照组,差异有统计学意义(P<0.05)。结论宫颈癌术后采用康艾注射液治疗效果显著,患者机体免疫功能指标、炎症因子指标均明显下降,可有效防止不良反应发生,近期疗效更优,临床上可借鉴及推广。 展开更多
关键词 康艾注射液 宫颈癌 术后 免疫功能 近期疗效
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儿童吉兰-巴雷综合征脑脊液神经丝蛋白轻链特点分析
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作者 靳梅 刘静 +3 位作者 刘康 赵力搏 赵紫薇 孙素真 《临床儿科杂志》 CAS CSCD 北大核心 2024年第1期58-62,共5页
目的探讨脑脊液神经丝蛋白轻链(NfL)对儿童吉兰-巴雷综合征(GBS)患者早期诊断及预后的评估价值。方法回顾性分析2020年11月至2022年5月收治的GBS患儿的临床资料,选择同期诊断为偏头痛、儿童情绪障碍患者作为对照组,比较两组脑脊液-NfL水... 目的探讨脑脊液神经丝蛋白轻链(NfL)对儿童吉兰-巴雷综合征(GBS)患者早期诊断及预后的评估价值。方法回顾性分析2020年11月至2022年5月收治的GBS患儿的临床资料,选择同期诊断为偏头痛、儿童情绪障碍患者作为对照组,比较两组脑脊液-NfL水平,分析脑脊液-NfL水平与临床特征的相关性。结果GBS组患儿26例,男14例、女12例,中位年龄5.0(3.8~8.0)岁;对照组48例,男30例、女18例,中位年龄8.0(5.0~9.0)岁。入院时GBS组脑脊液-NfL和脑脊液蛋白水平高于对照组,差异有统计学意义(P<0.05)。联合检测脑脊液-NfL和蛋白早期诊断GBS的灵敏度、特异度、阳性预测值、阴性预测值和准确度分别为92.3%、95.8%、92.3%、95.8%和94.6%。入院时GBS患儿脑脊液蛋白水平及疾病高峰时Hughes评分均与脑脊液-NfL水平呈显著正相关(P<0.05)。预后不良组患儿脑脊液-NfL水平显著高于预后良好组,差异有统计学意义(P<0.05)。结论脑脊液-NfL与脑脊液蛋白水平、疾病严重程度及短期预后相关,对于早期辅助诊断GBS、评估短期预后有一定帮助。 展开更多
关键词 吉兰-巴雷综合征 神经丝蛋白轻链 Hughes功能评分 短期预后 儿童
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Evaluation of Care Quality Related to Dietary Intake and Swallowing Functions of Residents at Long-Term Facilities in Japan
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作者 Sayuri Kaneko 《Open Journal of Nursing》 2021年第7期610-619,共10页
This study aimed to evaluate the quality of healthcare services pertaining to the dietary intake and swallowing functions of residents, nutrition management practices, and performance of residents at long-term care fa... This study aimed to evaluate the quality of healthcare services pertaining to the dietary intake and swallowing functions of residents, nutrition management practices, and performance of residents at long-term care facilities. We investigated outcome indicators, such as changes in dietary intake and swallowing function levels of residents, and clarified which structural and process indicators were associated with the outcome indicators. This was a retrospective study, analyzing information on healthcare services from 1067 long-term care facilities during the fiscal year 2012, sampled from among those registered with the Welfare, Health and Medical Care Information Network of the Welfare and Medical Service Agency in Japan. Five outcome indicators were identified. Next, we examined the relationships between the outcome indicators and structural or process indicators using a multivariate linear regression model, adjusting for facility type. The findings showed how the five outcome indicators were used in long-term care facilities over a period of one year and determined the independent predictors of these outcome indicators. The amplification of dietary function 1 was associated with “assessment of oral functions using a feeding and swallowing assessment checklist every three months”, “holding care conferences related to ingestion and swallowing every three months”, and “maintaining a 1:2 ratio for meal-time assistants to residents”. To improve the quality of care, it is necessary to increase the number of staff (e.g., to provide meal assistance to residents) and to understand changes in the residents’ status through accurate assessment and monitoring. 展开更多
关键词 Dietary Intake Long-term Care Facility Nutrient Intake Quality Indicators Swallowing functions
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健脾养胃法对老年胃癌晚期患者肿瘤标志物水平、免疫功能及长期疗效影响研究
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作者 曹爽 贾文文 +4 位作者 胡佳 田伟 刘美 朱劼 程念 《药学研究》 CAS 2024年第2期189-193,共5页
目的 探究健脾养胃法对老年胃癌晚期患者肿瘤标志物水平、免疫功能及长期疗效影响。方法 收集我院2019年6月—2022年6月肿瘤科收治的晚期胃癌患者95例,随机分为对照组(47例)与试验组(48例)。对照组予以FOLFOX4方案进行化疗,试验组在对... 目的 探究健脾养胃法对老年胃癌晚期患者肿瘤标志物水平、免疫功能及长期疗效影响。方法 收集我院2019年6月—2022年6月肿瘤科收治的晚期胃癌患者95例,随机分为对照组(47例)与试验组(48例)。对照组予以FOLFOX4方案进行化疗,试验组在对照组的基础上予以健脾养胃法。两组均治疗9周,治疗结束后比较2组中医症状积分、血清肿瘤标志物、免疫功能指标、治疗期间胃肠道反应、远期生存率。结果 治疗后与对照组相比,试验组临床有效率较高(P<0.05)。治疗后与治疗前相比2组脘腹痞闷、胸胁胀痛、食欲缺乏、便溏及神疲乏力等中医症状积分降低;与对照组相比,试验组所有中医症状积分均较低(P<0.05)。治疗后与治疗前相比2组CEA、CA12-5、CA19-9及CA72-4降低;与对照组相比,试验组CEA、CA12-5、CA19-9及CA72-4较低(P<0.05)。治疗后与治疗前相比2组CD_(4)^(+)/CD_(8)^(+)、C_(3)^(+)升高,IgG、IgM降低(P<0.05);与对照组相比,试验组CD_(4)^(+)/CD_(8)^(+)、C_(3)^(+)较高,IgG、IgM较低(P<0.05)。2组6个月及1年生存率相比无统计学意义(P>0.05);试验组3年内生存率高于对照组(P<0.05)。结论 健脾养胃法应用于老年胃癌晚期胃癌患者的治疗中近远期治疗效果显著,能提高免疫功能,下调肿瘤标志物水平,适宜临床应用。 展开更多
关键词 健脾养胃法 老年胃癌晚期 肿瘤标志物 免疫功能 长期疗效
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ADO在慢性阻塞性肺疾病患者近期预后评估中的价值
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作者 努尔阿米娜·铁力瓦尔迪 韩利梅 +1 位作者 关景 李晶晶 《中国卫生标准管理》 2024年第11期74-77,共4页
目的探讨呼吸困难指数气流受限程度指数(dyspnea index air flow restriction degree,ADO)在慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者近期预后评估中的价值。方法选取新疆医科大学第二附属医院呼吸内科自2021... 目的探讨呼吸困难指数气流受限程度指数(dyspnea index air flow restriction degree,ADO)在慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者近期预后评估中的价值。方法选取新疆医科大学第二附属医院呼吸内科自2021年3月—2023年3月的COPD患者120例,并依照患者最终转归情况将其分为存活组(n=95)与死亡组(n=25)。观察2组患者的基础病情况及患者性别、年龄、第1秒用力呼气容积(first second forced expiratory volume,FEV1)占预计值的百分比和ADO指数等相关指标。比较ADO指数不同分数患者病死率。比较ADO指数预测180 d死亡的受试者工作特征(receiver operating characteristic,ROC)曲线面积。结果2组患者的高血压、冠心病、心律失常、糖尿病、慢性肝病、慢性肾病、亚临床甲减发生情况对比,差异无统计学意义(P>0.05)。死亡组患者的FEV1占预计值的百分比、FEV1占预计值的百分比评分、呼吸困难分[英国医学研究委员会(the Medical Research Council,MRC)]评分以及ADO指数均高于存活组患者(P<0.05)。ADO指数<5分者的死亡率高于ADO指数≥5分者(P<0.05)。ADO指数预测180 d死亡的ROC曲线面积为0.851(95%CI:0.767~0.928,P<0.001),ADO指数为5.5时,约登指数最大,为0.565。结论ADO可有效反映COPD病情严重程度,对于患者而言可准确反映其病情进展情况,帮助其获得良好的疾病治疗效果,对于患者近期预后而言也具有积极意义,临床应用效果良好。 展开更多
关键词 ADO COPD 近期预后 肺功能 评估 临床价值
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基于事件触发的汽车主动悬架振动控制器设计
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作者 庞辉 王明祥 +1 位作者 王磊 郑理哲 《兵工学报》 EI CAS CSCD 北大核心 2024年第8期2698-2711,共14页
为提升车辆的行驶平稳性和安全性,针对具有输入死区和饱和特性的汽车主动悬架系统,设计一种基于事件触发(Event Trigger,ET)和长短期记忆(Long Short-Term Memory,LSTM)神经网络的智能振动控制器。在构建四分之一车辆主动悬架模型基础上... 为提升车辆的行驶平稳性和安全性,针对具有输入死区和饱和特性的汽车主动悬架系统,设计一种基于事件触发(Event Trigger,ET)和长短期记忆(Long Short-Term Memory,LSTM)神经网络的智能振动控制器。在构建四分之一车辆主动悬架模型基础上,提出一种高效的ET控制器,能够有效缓解通信紧张问题和避免控制器固有的芝诺现象,提高控制器的稳定性和可靠性。为了进一步增强控制器的智能性和自适应性引入了LSTM神经网络,利用径向基函数神经网络来模拟和生成不同条件下的响应数据实现LSTM神经网络的训练,以精确预测并补偿作动器的死区和饱和影响,进而使主动悬架系统的垂直加速度趋近于0 m/s^(2),从而极大地提升了乘坐舒适性。通过数值仿真验证所设计控制器的适用性和有效性。研究结果表明,所设计的控制器在多种工况下能够有效提高主动悬架系统的动态性能。 展开更多
关键词 主动悬架系统 事件触发 长短期记忆网络 径向基函数神经网络
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基于低风速功率修正和损失函数改进的超短期风电功率预测
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作者 臧海祥 赵勇凯 +3 位作者 张越 程礼临 卫志农 秦雪妮 《电力系统自动化》 EI CSCD 北大核心 2024年第7期248-257,共10页
风电功率具有较强的波动性和随机性。为进一步提升风电功率的预测精度,提出一种基于低风速功率修正和损失函数改进的超短期风电功率预测模型。该模型采用卷积神经网络、自注意力机制和双向门控循环单元捕获风电功率序列的长期时序依赖... 风电功率具有较强的波动性和随机性。为进一步提升风电功率的预测精度,提出一种基于低风速功率修正和损失函数改进的超短期风电功率预测模型。该模型采用卷积神经网络、自注意力机制和双向门控循环单元捕获风电功率序列的长期时序依赖关系。为了解决低风速下待风状态神经网络难以精确拟合的问题,模型通过预测风速并结合当前时段的风电功率对低风速段的预测功率进行修正。针对参数训练的稳定性问题,模型通过改进预测策略和共享权重,引入一种多元非线性的损失函数来提取序列间的关联性。结果表明,所提模型在多项误差指标中均优于对比模型,能够有效提升超短期风电功率的预测效果。 展开更多
关键词 超短期风电功率预测 功率修正 损失函数改进 神经网络模型
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一类含常数项的混沌系统在未知参数下的同步
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作者 周群利 白彩波 《滨州学院学报》 2024年第2期90-96,共7页
研究了一个新的含有常数项的混沌系统在参数未知情况下的修正函数投影同步问题。对新的含有常数项的混沌系统从平衡点的稳定性、耗散性、poincare映射、功率谱及初值敏感性5个方面进行了特性分析。基于修正函数投影同步方法,设计了有效... 研究了一个新的含有常数项的混沌系统在参数未知情况下的修正函数投影同步问题。对新的含有常数项的混沌系统从平衡点的稳定性、耗散性、poincare映射、功率谱及初值敏感性5个方面进行了特性分析。基于修正函数投影同步方法,设计了有效的控制输入及参数自适应律,根据Lyapunov函数稳定性定理从理论上证明修正函数投影同步误差系统在原点的渐近稳定性,从而实现了新混沌系统的修正函数投影同步控制。数值模拟仿真证明了同步方法的正确性,该同步方法可以应用于混沌保密通信的研究中。 展开更多
关键词 混沌系统 ROSSLER系统 修正函数投影同步 常数项 平衡点
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奥尔夫音乐疗法对精神分裂症长期住院患者干预研究 被引量:1
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作者 王天乐 李日照 +8 位作者 黄啟洋 刘大明 夏达凯 冯婷 伊尔夏提·阿肉甫江 伍洁怡 孙彬 郑欣燕 戴迎春 《中国神经精神疾病杂志》 CAS CSCD 北大核心 2024年第3期135-139,共5页
目的探究对精神分裂症长期住院患者进行奥尔夫音乐治疗是否有促进康复的效果。方法在2023年4月至2023年9月开展随机、单盲、对照试验,纳入68例长期住院精神分裂症患者,随机分为研究组和对照组,每组各34例。研究组在维持原有药物、常规... 目的探究对精神分裂症长期住院患者进行奥尔夫音乐治疗是否有促进康复的效果。方法在2023年4月至2023年9月开展随机、单盲、对照试验,纳入68例长期住院精神分裂症患者,随机分为研究组和对照组,每组各34例。研究组在维持原有药物、常规康复治疗基础上增加奥尔夫音乐治疗,对照组仅维持原有药物和常规康复治疗,干预8周。在基线和干预后,对两组患者分别进行阳性与阴性症状量表(positive and negative syndrome scale,PANSS)、住院精神病人康复疗效评定量表(inpatient psychosis rehabilitation observe scale,IPROS)、个人和社会功能量表(personal and social performance scale,PSP)评估。结果在治疗前,两组PANSS、IPROS、PSP得分对比未见统计学差异(均P>0.05)。干预8周后,PANSS量表显示:研究组治疗前后的评分差值在阴性症状(-3.20±4.13vs.-0.17±2.43,P<0.001)、一般症状(-2.79±3.83 vs.-0.17±2.99,P=0.003)、总分(-5.88±6.36 vs.0.00±4.08,P<0.001)指标上优于对照组,而在阳性症状上的差异无统计学意义(P>0.05)。IPROS量表显示:研究组患者在参与工疗情况(-0.82±2.08 vs.0.23±2.10,P=0.041)、社交能力(-0.59±1.94 vs.0.53±1.69,P=0.014)和生活能力(-0.94±2.50 vs.0.15±1.48,P=0.033)方面,干预前后的评分差值与对照组比较差异有统计学意义。PSP量表表明:研究组治疗前后的评分差值在社会活动[0(-1,0)vs.0(0,0),P=0.011]、自我照料[0(-1,0)vs.0(-0.25,0),P=0.012]上优于对照组。结论对于长期住院的精神分裂症患者,奥尔夫音乐疗法能有效缓解精神症状、促进社会功能、提升康复疗效。 展开更多
关键词 精神分裂症 奥尔夫音乐 音乐治疗 精神康复 精神状态 社会功能 长期住院患者
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经皮微创脊柱后路钉棒系统固定治疗胸腰椎骨折近远期效果观察
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作者 倪建平 周国柱 +3 位作者 顾军 黄亮 包文龙 魏斐 《中国伤残医学》 2024年第9期5-8,共4页
目的:观察胸腰椎骨折患者接受经皮微创脊柱后路钉棒系统固定治疗的近远期疗效。方法:选择2018年2月-2022年1月我院70例胸腰椎骨折患者作为研究对象,根据随机数字表法分为对照组和观察组,每组35例。对照组采用常规切开椎弓根内固定治疗,... 目的:观察胸腰椎骨折患者接受经皮微创脊柱后路钉棒系统固定治疗的近远期疗效。方法:选择2018年2月-2022年1月我院70例胸腰椎骨折患者作为研究对象,根据随机数字表法分为对照组和观察组,每组35例。对照组采用常规切开椎弓根内固定治疗,观察组采用经皮微创脊柱后路钉棒系统固定治疗,对比2组各项手术指标、术后恢复情况及并发症发生率。结果:术后观察组患者的手术时间、术中出血量、住院时间、术后引流量、术后负重时间、骨折愈合时间均优于对照组,差异均有统计学意义(P<0.05)。术前2组患者的伤椎后凸Cobb角、伤椎前缘高度比值、伤椎后缘高度比值差异无统计学意义(P>0.05),术后3个月及术后1年伤椎后凸Cobb角均降低,伤椎前缘高度比值、伤椎后缘高度均升高,观察组变化比对照组更明显,差异有统计学意义(P<0.05)。术前2组患者ODI、Harris评分、VAS评分差异无统计学意义(P>0.05)。术后7dVAS评分降低,术后3个月及术后1年ODI评分降低,Harris评分升高,观察组变化比对照组更明显,差异有统计学意义(P<0.05)。观察组术后并发症发生率为5.71%,低于对照组的25.71%,差异有统计学意义(P<0.05)。结论:胸腰椎骨折患者接受经皮微创脊柱后路钉棒系统固定治疗,近期疗效和远期疗效均能得到有效保障,对于促进患者腰椎指标及功能改善、缓解疼痛程度及减少并发症发生率均具有显著效果。 展开更多
关键词 胸腰椎骨折 经皮微创脊柱后路钉棒系统固定 近期疗效 远期疗效 腰椎功能 并发症
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