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Correlation between anxiety, depression, self-perceived burden, and psychological resilience in patients with chronic renal failure on maintenance hemodialysis 被引量:1
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作者 Yin-Yin Ye Liang-Fei Tao +3 位作者 Yan-Lang Yang Yu-Wei Wang Xiao-Ming Yang Hai-Hong Xu 《World Journal of Psychiatry》 2025年第7期103-110,共8页
BACKGROUND Research examining the relationships among anxiety,depression,self-perceived burden(SPB),and psychological resilience(PR),along with the determinants of PR,in patients with chronic renal failure(CRF)receivi... BACKGROUND Research examining the relationships among anxiety,depression,self-perceived burden(SPB),and psychological resilience(PR),along with the determinants of PR,in patients with chronic renal failure(CRF)receiving maintenance hemodia-lysis(MHD)is limited.AIM To investigate the correlation between anxiety,depression,SPB,and PR in pati-ents with CRF on MHD.METHODS This study included 225 patients with CRF on MHD who were admitted between June 2021 and June 2024.The anxiety level was evaluated using the Self-Rating Anxiety Scale(SAS);the depression status was assessed using the Self-Rating Depression Scale(SDS);the SPB was measured using the SPB Scale(SPBS);and the PR was determined using the Connor–Davidson Resilience Scale(CD-RISC).The correlations among the SAS,SDS,SPB,and CD-RISC were analyzed using Pearson’s correlation coefficients.Univariate and multivariate analyses were performed to identify the factors that influence the PR of patients with CRF on MHD.RESULTS The SAS,SDS,SPB,and CD-RISC scores of the 225 patients were 45.25±15.36,54.81±14.68,32.31±11.52,and 66.48±9.18,respectively.Significant negative correlations were observed between SAS,SDS,SPB,and CD-RISC.Furthermore,longer dialysis vintage(P=0.015),the absence of religious beliefs(P=0.020),lower monthly income(P=0.008),higher SAS score(P=0.013),and higher SDS score(P=0.006)were all independent factors that adversely affected the PR of patients with CRF on MHD.CONCLUSION Patients with CRF on MHD present with varying degrees of anxiety,depression,and SPB,all of which exhibit a significant negative correlation with their PR.Moreover,longer dialysis vintage,the absence of religious beliefs,lower monthly income,higher SAS score,and higher SDS score were factors that negatively affected the PR of patients with CRF on MHD. 展开更多
关键词 Chronic renal failure Maintenance hemodialysis ANXIETY DEPRESSION self-perceived burden Psychological resilience
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Self-care activities mediate self-perceived burden and depression in Chinese patients with type 2 diabetes
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作者 Rong Zhang Mei-Yan Wang +3 位作者 Xue-Qing Zhang You-Wen Gong Ya-Fen Guo Jin-Hua Shen 《World Journal of Psychiatry》 2025年第5期184-192,共9页
BACKGROUND Diabetes is becoming increasingly common and has become an important global health issue.In addition to physical damage,diabetes often leads to psychological complications,such as depressive symptoms.Self-c... BACKGROUND Diabetes is becoming increasingly common and has become an important global health issue.In addition to physical damage,diabetes often leads to psychological complications,such as depressive symptoms.Self-care is considered to be the cornerstone of type 2 diabetes mellitus(T2DM)management.This research evaluated depression and explored the associations between self-care activities,self-perceived burden,and depression among T2DM patients in China.AIM To investigate the self-care activities and the association between depression and self-perceived burden among Chinese inpatients with T2DM.METHODS A cross-sectional study was conducted in participants with T2DM.The data collected encompassed basic characteristics,diabetes self-care activities,depre-ssion levels,and self-perceived burdens.Bootstrapping was utilized to assess the mediating role of diabetes self-care activities.RESULTS There were 599 T2DM patients in the survey,and 71.8%had been diagnosed with the disease for 1–10 years.There were significant correlations between self-care activities,depression,and self-perceived burden.The significant coefficients for paths a(B=-0.281,P<0.001)and b(B=-0.041,P<0.05)suggested negative associations between self-perceived burden and self-care behavior and between self-care activities and depression.The indirect effect(path a×b)of self-perceived burden on depression through self-care behaviors was significant(B=0.020,P<0.05),with a 95%bias-corrected bootstrap confidence interval of 0.007–0.036.CONCLUSION The mediating model presented here highlights the role of self-care activities in exerting both direct and indirect effects on depression in participants with T2DM. 展开更多
关键词 Type 2 diabetes mellitus Patient Health Questionnaire-9 SELF-CARE self-perceived burden Mediating role
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Self-perceived burden and influencing factors in patients with cervical cancer administered with radiotherapy 被引量:38
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作者 Ting Luo Rong-Zhi Xie +3 位作者 Yan-Xia Huang Xiao-Hua Gong Hui-Ying Qin Yi-Xiao Wu 《World Journal of Clinical Cases》 SCIE 2021年第17期4188-4198,共11页
BACKGROUND Cervical cancer is the fourth commonest malignancy in women around the world.It represents the second most commonly diagnosed cancer in South East Asian women,and an important cancer death cause in women of... BACKGROUND Cervical cancer is the fourth commonest malignancy in women around the world.It represents the second most commonly diagnosed cancer in South East Asian women,and an important cancer death cause in women of developing nations.Data collected in 2018 revealed 5690000 cervical cancer cases worldwide,85%of which occurred in developing countries.AIM To assess self-perceived burden(SPB)and related influencing factors in cervical cancer patients undergoing radiotherapy.METHODS Patients were prospectively included by convenient sampling at The Fifth Affiliated Hospital of Sun Yat-Sen University,China between March 2018 and March 2019.The survey was completed using a self-designed general information questionnaire,the SPB scale for cancer patients,and the self-care self-efficacy scale,Strategies Used by People to Promote Health,which were delivered to patients with cervical cancer undergoing radiotherapy.Measurement data are expressed as the mean±SD.Enumeration data are expressed as frequencies or percentages.Caregivers were the spouse,offspring,and other in 46.4,40.9,and 12.7%,respectively,and the majority were male(59.1%).As for pathological type,90 and 20 cases had squamous and adenocarcinoma/adenosquamous carcinomas,respectively.Stage IV disease was found in 12(10.9%)patients.RESULTS A total of 115 questionnaires were released,and five patients were excluded for too long evaluation time(n=2)and the inability to confirm the questionnaire contents(n=3).Finally,a total of 110 questionnaires were collected.They were aged 31-79 years,with the 40-59 age group being most represented(65.4%of all cases).Most patients were married(91.8%)and an overwhelming number had no religion(92.7%).Total SPB score was 43.13±16.65.SPB was associated with the place of residence,monthly family income,payment method,transfer status,the presence of radiotherapy complications,and the presence of pain(P<0.05).The SPB and self-care self-efficacy were negatively correlated(P<0.01).In multivariate analysis,self-care self-efficacy,place of residence,monthly family income,payment method,degree of radiation dermatitis,and radiation proctitis were influencing factors of SPB(P<0.05).CONCLUSION Patients with cervical cancer undergoing radiotherapy often have SPB.Self-care self-efficacy scale,place of residence,monthly family income,payment method,and radiation dermatitis and proctitis are factors independently influencing SPB. 展开更多
关键词 Cervical cancer RADIOTHERAPY self-perceived burden Influencing factors self-perceived burden Prospective research
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Personality factors and self-perceived health in Chi-lean elderly population 被引量:2
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作者 Pedro Olivares-Tirado Gonzalo Leyton Eduardo Salazar 《Health》 2013年第12期86-96,共11页
Empirical evidence suggests that the stability of personality itself contributes to successful ageing and is associated with longer life. The aim of this study was to investigate the association between personality tr... Empirical evidence suggests that the stability of personality itself contributes to successful ageing and is associated with longer life. The aim of this study was to investigate the association between personality traits and the self-perceived health status, stratified by medical conditions in a representative sample of non-institutionalized elderly people in Chile. The data used for this study come from the fourth waves (2009) of the Chilean Social Protection Survey (SPS-2009). Included were a total of 2655 subjects aged 65 and over. The results showed that higher scores of all five personality factors were associated with good health. Those with the perception of poor health were more likely to be female, with lower education level and older than those with good health. With the exception of agreeableness, strong and significant associations with self-perceived health were demonstrated for extraversion, conscientiousness, emotional stability and openness, among elderly with medical conditions. Among elderly without medical problems, significant associations with self-perceived health were demonstrated only for extraversion, agreeableness and emotional stability. This study has shown that there is a consistent association between personality factors and self-perceived health throughout the older population. Our results suggest that extraversion and openness traits could be acting as “protector” factors and agreeableness and conscientiousness traits as “resilient” factors, facing to the health problems among elderly people. 展开更多
关键词 SEROUS PERSONALITY self-perceived Health Ageing TIPI QUESTIONNAIRE
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Relationship between Self-Perceived Age and Social Activity in Older Japanese Adults: The KAGUYA Study 被引量:1
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作者 Katsuhiko Takatori Daisuke Matsumoto +2 位作者 Makoto Miyazaki Naomi Yamasaki Jong-Seong Moon 《Health》 2018年第11期1459-1473,共15页
Youthful feelings were shown to have a positive effect on the mental and physical conditions of the elderly. On the contrary, elderly people whose self-perceived age is older than their chronological age were shown to... Youthful feelings were shown to have a positive effect on the mental and physical conditions of the elderly. On the contrary, elderly people whose self-perceived age is older than their chronological age were shown to experience negative health outcomes. This study investigated whether the self-perceived age (younger or older) relative to chronological age promotes social activity. The baseline data acquired from 3094 older adults as part of the Keeping Active across Generations Uniting the Youth and the Aged study was used in the current study. The participants completed a questionnaire that solicits information pertaining to sociodemographic factors, felt age, self-rated health, physical activity, depression, disease burden, fall history, fear of falling, level of instrumental activities of daily living (IADLs) and social activity. The discrepancy between felt age and chronological age was defined as the self-perceived age. Self-perceived age was calculated by subtracting the participant’s chronological age from the felt age, and the score for the difference was divided by the chronological age. The Japan Science and Technology Agency Index of Competence was used to evaluate social activity. Regression analysis results revealed that a younger self-perceived age was associated with higher social activity after controlling for sociodemographic factors, self-rated health, depression, physical activity, disease burden, level of IADL, fall history and fear of falling. Fall history was significantly associated with higher social activity in young-old participants (65 - 74 years) (p = 0.014) but not in old-old participants (>75 years). This study suggests that a younger self-perceived age in older adults would lead to a high-level living function. This finding may provide useful information for interventions aimed at the promotion of health and/or the prevention of frailty. 展开更多
关键词 self-perceived Age OLDER ADULTS SOCIAL Activity
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Analysis of the present situation and influencing factors of self-perceived burden in primary glaucoma patients 被引量:1
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作者 Fu-Liang Sun Xiao-Hui An Shu-Qing Cao 《TMR Integrative Nursing》 2020年第1期15-21,共7页
Objective:To explore the status of self-perceived burden(SPB)in primary glaucoma patients and to analyze its influencing factors.Subject and setting:A questionnaire survey was administered to 236 inpatients from a ter... Objective:To explore the status of self-perceived burden(SPB)in primary glaucoma patients and to analyze its influencing factors.Subject and setting:A questionnaire survey was administered to 236 inpatients from a tertiary general hospital and a eye hospital in Tianjin.The investigation was conducted after obtaining informed consent from each participant.Instruments:They were investigated using general data questionnaire,Self-Perceived Burden Scale(SPBS),Medical Coping Modes Questionnaire(MCMQ).Design:A descriptive cross-sectional design was used to gather data in this study.Results:The total SPBS score of primary glaucoma patients was(31.10±9.34)was medium.Regression consults showed that avoidance and surrender coping style,medical burden and right eye vision were the influencing factors of patients’SPB(P<0.05).Conclusion:Patients with primary glaucoma have a relatively heavy SPB,so medical staff should encourage them to actively face it.Tailored strategies in line with the patient’s economic and visual conditions to reduce the SPB. 展开更多
关键词 Primary glaucoma self-perceived burden Root cause analysis
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Objective and Self-Perceived Facial Skin Status Using Whitening Efficacy of Cosmetic Products on Taiwan Residents Women
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作者 Hsin-Tung Lin Gwo-Shing Chen +1 位作者 Feng-Lin Yen Kuan-Nien Chen 《Journal of Cosmetics, Dermatological Sciences and Applications》 2016年第4期117-123,共7页
Background: Tranexamic acid and vitamin C derivatives are important reagent used in cosmetic skin-whitening products. Recently, self-perceptions regarding improvement in facial skin status have been increasingly recog... Background: Tranexamic acid and vitamin C derivatives are important reagent used in cosmetic skin-whitening products. Recently, self-perceptions regarding improvement in facial skin status have been increasingly recognized as an important outcome of whitening cosmetic products intervention. Aims: The purpose of the study was to determine the receptiveness of objective and self-perceived facial skin status using whitening cosmetic products. Methods: A total of 40 volunteers were photographed using the Visia<sup>?</sup> machine and completed questionnaires at pre- and post-operation (8 weeks after receiving whitening cosmetic products). Visia<sup>?</sup> digital image analysis and questionnaires were used for assessment of facial skin status. The receptiveness of objective and self-perceived measures was assessed by paired t test and Effect Size (ES). Results: There were progresses with regard to the surface spot (ES = 0.22), wrinkles (ES = 0.24), texture (ES = 0.31) and pores (ES = 0.21) after using cosmetic products with tranexamic acid. For self-perceived measures, there were significant progresses in pigmented spots (ES = 0.75), rough complexion (ES = 0.76), red complexion (ES = 0.41), wrinkle (ES = 0.58) and obvious pores (ES = 0.75). Conclusions: This study suggests that the whitening cosmetic products are associated with improvement of objective and self-perceived facial skin status. The results could be provided as available information for cosmetic investigation. 展开更多
关键词 WHITENING self-perceived Objective COSMETIC Facial Skin
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Mental health is as important as physical health: The degree and influencing factors of self-perceived burden in elderly patients with essential hypertension
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作者 Qin Lin Meng-Xue Fu +3 位作者 Ling-Na Yang Ji-Jun Wu Hong-Yan Wang Xian-Geng Zhang 《TMR Integrative Nursing》 2019年第1期27-34,共8页
Objective: The purpose of the study is to investigate the degree and influencing factors of self-perceived burden in elderly patients with essential hypertension in China's Mainland. Methods:The study used the cro... Objective: The purpose of the study is to investigate the degree and influencing factors of self-perceived burden in elderly patients with essential hypertension in China's Mainland. Methods:The study used the cross-sectional investigation method and the patients were recruited from six tertiary hospitals in Chengdu, China. A convenience sample of 451 elderly patients with essential hypertension was included in this study. Multiple linear regression analysis was performed as well. Results: Results showed that the score of elderly essential hypertension patients’self-perceived burden was 27.96 ± 6.04, which was at medium degree. According to Spearman's r test the anxiety, depression and medication compliance with Self-perceived burden (SPB) of elderly hypertension patients were statistically significant (r=0.372, 0.899,0.438,P=0.000,respectively). Single factor analysis showed that the difference of patients’ gender, place of residence, monthly per capita income, marital status, whether can afford medical expenses and number of complications in SPB scores was statistically significant (P<0.05). Multiple regression analysis also showed that anxiety, medication compliance, age and marital status were the main influencing factor of SPB of elderly hypertension patients (P<0.05). Conclusion: Our care workers should pay attention to the self-perceived burden of elderly patients with essential hypertension, and omnibearing, systematic nursing should be supplied to decrease the self-perceived burden of them. 展开更多
关键词 ELDERLY Essential hypertension self-perceived burden Root cause analysis
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The Useless Web
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《微型计算机》 2014年第14期8-9,共2页
The Useless Web收集了大量来自世界各地的无聊网站,用户每点击一次PLEASE按钮,就会为你随机挑选一个无聊网站。虽然这种行为看起来挺无聊的,不过其中确实有部分网站比较接地气,你可能遇到一个冷到不行的笑话,看到一张让人惊叹的图片,... The Useless Web收集了大量来自世界各地的无聊网站,用户每点击一次PLEASE按钮,就会为你随机挑选一个无聊网站。虽然这种行为看起来挺无聊的,不过其中确实有部分网站比较接地气,你可能遇到一个冷到不行的笑话,看到一张让人惊叹的图片,或者偶遇其他的惊喜。 展开更多
关键词 网站 内容介绍 “The useless Web” 用户
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“文科无用”论、人工智能与新文科的出路 被引量:4
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作者 苏德超 《新文科教育研究》 2025年第1期71-85,142,共16页
随着人工智能等新技术的兴起,坊间“文科无用”论甚嚣尘上。这一质疑跟对象的切近性、对成果加以事实和逻辑核查的困难性、进步的不明显性以及价值导向上的弱市场属性和非力量性等文科固有特征密切相关,同时又被文科研究者改写式诠释、... 随着人工智能等新技术的兴起,坊间“文科无用”论甚嚣尘上。这一质疑跟对象的切近性、对成果加以事实和逻辑核查的困难性、进步的不明显性以及价值导向上的弱市场属性和非力量性等文科固有特征密切相关,同时又被文科研究者改写式诠释、套用式应用等工作特点所强化。文科研究者的工作特点派生于文科固有特征,且可以动态调整,因此相应质疑远不如对文科固有特征的质疑来得严厉。然而,所有激进的反文科立场都涉嫌对理工科标准的超范围使用,是一种未经有效辩护的文科观点。其实质是对轻率文科观点的放纵而非对严肃理工科的立场重视。作为理工科自我迭代的衍生品,人工智能虽展现出极具潜力的应用前景,但由于缺乏情感、直觉和创见,它无法在文科领域取代人类。当前新文科建设应守护文科的人文要素,避免让文科单纯沦为新技术应用场景,避免“第三种文化”运动中的激进立场,以真正促进文科发展。 展开更多
关键词 “文科无用”论 文科特征 人工智能 第三种文化 新文科
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伊丽莎白·毕晓普的博物学式观察诗学
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作者 黄小平 张跃军 《山东外语教学》 北大核心 2025年第4期105-113,共9页
美国诗人伊丽莎白·毕晓普的诗歌创作深受英国博物学的影响。毕晓普长期研读达尔文的作品,其“无用的专注”的诗学观念继承了达尔文融理性观察与感性抒情于一体的自然书写特质,并契合了唯美主义思潮与美国实用主义诗学理念。“无用... 美国诗人伊丽莎白·毕晓普的诗歌创作深受英国博物学的影响。毕晓普长期研读达尔文的作品,其“无用的专注”的诗学观念继承了达尔文融理性观察与感性抒情于一体的自然书写特质,并契合了唯美主义思潮与美国实用主义诗学理念。“无用的”指创作者葆有素心,对自然进行朴素纯粹的观察和再现,呈现唯美主义所倡导的艺术去功利化的理念旨趣;“专注”则坚持对物体描写应遵循客观精确的原则,力求还原“事物的技能”,侧重对物质形式的经验形塑,从逻辑上承袭了美国实用主义的物本理念。“无用的专注”彰显了毕晓普对物体原始形式的尊重与热爱,折射其以艺术修正人类与自然关系的责任感和使命感。 展开更多
关键词 毕晓普 观察诗学 博物学 “无用的专注” 唯美主义 实用主义
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研究生上课究竟有没有用?——对感知课程价值及其影响机制的质性分析
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作者 彭湃 杨巍 闫畅 《研究生教育研究》 北大核心 2025年第6期51-59,共9页
研究生教育中“课程无用论”正大行其道。为回应这种似是而非的观点,有必要对课程价值进行深入探究。基于对29位研究型大学工科研究生的访谈,发现研究生感知的课程价值体现在知识习得、知识生产、学习心理和职业社会化四个维度,且各维... 研究生教育中“课程无用论”正大行其道。为回应这种似是而非的观点,有必要对课程价值进行深入探究。基于对29位研究型大学工科研究生的访谈,发现研究生感知的课程价值体现在知识习得、知识生产、学习心理和职业社会化四个维度,且各维度之间存在较大的价值不平衡。感知课程价值具有时滞性、有限性、动态性和异质性等特征。在本文构建的课程价值影响机制模型中,学生个体的发展需求是课程价值实现的起点;选课制度安排确定了具体的课程;课程内容设计与功能模块设计耦合发挥着课程本体的价值;教师的教学态度与投入、对资源的教学转化以及教学技能和方法服务于本体价值的发挥;外部资源对课程价值发挥替代效应,重要他人的看法也会影响感知课程价值。基于本理论模型提出了若干提升课程价值的对策。 展开更多
关键词 研究生课程 感知课程价值 期望-价值理论 课程无用论
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论现代大学教学的问题与归真
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作者 李芒 付苏豪 《中国电化教育》 北大核心 2025年第8期7-12,共6页
人才培养是现代大学的核心价值。然而,受制于对大学教学实质性的忽视与对先进教学理念的误解,教与学失衡的极端思维、影响有效教学的形式主义、无效教学泛滥的增负减质与个性消失的人本沦陷等四类现代大学教学问题,严重阻碍实现现代教... 人才培养是现代大学的核心价值。然而,受制于对大学教学实质性的忽视与对先进教学理念的误解,教与学失衡的极端思维、影响有效教学的形式主义、无效教学泛滥的增负减质与个性消失的人本沦陷等四类现代大学教学问题,严重阻碍实现现代教学的逻辑建构与发展。“伪教学现代化”致使教学歪曲、“学习无用论”致使教学轻忽、“重研轻教”致使教学放逐、“教师失范”致使教学失效、“技术至上”致使教学迷失,使得大学教学产生无力感,最终落得教学迷惘而步入歧途。该文提出批判新的“知识无用论”、建强大学教学发展评价体系、重塑共生对话的教学、以中和观审视工具应用等四条归真思路,以期解决大学教学问题,从而促进高等教育教学质量不断提升。 展开更多
关键词 现代大学 教学问题 伪教学现代化 新知识无用论 辩证中和观
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智能机器资本主义应用的政治经济学批判
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作者 于天宇 刘禹壮 《贵州大学学报(社会科学版)》 2025年第2期11-21,共11页
智能机器的资本主义应用,是从“工场手工业”到“机器大工业”再到“人工智能时代”资本逻辑不断发展演进的历史结果。在此历史进程中,人类劳动者已从“局部工人”,退化为机器的“有意识的肢体”,并可能沦为资本主义社会的“无用阶级”... 智能机器的资本主义应用,是从“工场手工业”到“机器大工业”再到“人工智能时代”资本逻辑不断发展演进的历史结果。在此历史进程中,人类劳动者已从“局部工人”,退化为机器的“有意识的肢体”,并可能沦为资本主义社会的“无用阶级”。在资本权力的作用下,智能机器的劳动主体性与生产加速性得到了全面发展,这既为资本家创造出了更为庞大的社会财富,又进一步降低了人类劳动者的社会地位,剥夺了人类劳动者的劳动权利,导致人机关系的深层次异化。基于马克思政治经济学视角,工人同机器之间的矛盾根源于资本逻辑而非机器本身。马克思对机器资本主义应用及其社会历史效应的政治经济学批判,不仅揭示出“有意识的肢体”与“无用阶级”生成的根本原因,同时有助于探寻并破除在智能时代中人的无用化困境的可行性方案。 展开更多
关键词 智能机器 局部工人 有意识的肢体 无用阶级 政治经济学
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论“无用”的“狷者”方鸿渐
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作者 赵新顺 《洛阳理工学院学报(社会科学版)》 2025年第1期65-69,共5页
方鸿渐是《围城》的主要人物,也是“视角人物”。研究者多引用《围城》人物及叙述者的话语,评价方鸿渐为善良、懦弱、无用之人,无意间认同了《围城》人物及叙述者信守的日常生活原则。方鸿渐不是“用人”,所以无用;他是一个“无用之人”... 方鸿渐是《围城》的主要人物,也是“视角人物”。研究者多引用《围城》人物及叙述者的话语,评价方鸿渐为善良、懦弱、无用之人,无意间认同了《围城》人物及叙述者信守的日常生活原则。方鸿渐不是“用人”,所以无用;他是一个“无用之人”,即具有真性情及自由意志的“狷者”。“狷者”方鸿渐以其“狷者”的眼光,检视其他“有用之人”,扫视战时中国的乡村与都市的众生,浸透了作者对国家民族命运的慨叹与忧世伤生的感情。“狷者”方鸿渐的无能及道德水平忽高忽低,极易与读者沟通,召唤理想读者参与创作,这是《围城》实现审美价值的独特之处。 展开更多
关键词 《围城》 方鸿渐 视角人物 “无用”之人 狷者
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基于显微镜观测的不同钙源下微生物固化砂强度提升机理的宏细观研究
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作者 刘超凡 杜强 +1 位作者 曲立强 刘旭梅 《内蒙古农业大学学报(自然科学版)》 北大核心 2025年第2期63-71,共9页
微生物诱导碳酸钙沉积(MICP)技术是一种新兴的土体加固技术,而添加不同钙源后固化效果截然不同。选取氯化钙、乙酸钙和乳酸钙作为胶结液钙源,基于数码显微镜观测,结合测定破坏后试件不同部位的碳酸钙含量,总结不同钙源下浸泡法固化试件... 微生物诱导碳酸钙沉积(MICP)技术是一种新兴的土体加固技术,而添加不同钙源后固化效果截然不同。选取氯化钙、乙酸钙和乳酸钙作为胶结液钙源,基于数码显微镜观测,结合测定破坏后试件不同部位的碳酸钙含量,总结不同钙源下浸泡法固化试件中碳酸钙的分布规律,从细观角度分析不同钙源产生不同晶型碳酸钙的分布差异,综合分析由不同钙源诱导生成的不同晶型碳酸钙在试件中的宏细观分布对试件强度的影响。试验结果表明:不同钙源下生成的碳酸钙的细观沉积存在差异,氯化钙和乳酸钙为钙源时,主要在颗粒孔隙间沉积,而乙酸钙为钙源时,则主要在颗粒表面沉积;乙酸钙在颗粒表面生成的无效沉积碳酸钙并非完全无效,而是为颗粒提供摩擦力,碳酸钙含量较高时试件同样具有较高强度。 展开更多
关键词 钙源 MICP 无侧限抗压强度 晶型 无效沉积
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基于数据删除与合并的相似轨迹查询性能优化
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作者 潘玉彪 林宜 张惠臻 《华中科技大学学报(自然科学版)》 北大核心 2025年第5期44-51,共8页
为解决多阶任务并行的相似轨迹查询(MPST)当执行基于轨迹相似度的车辆轨迹查询时产生大量无用数据和冗余数据进而导致系统性能下降的问题,提出一种基于环域计算的无用数据删除和冗余数据合并方法.该方法采用环域结构对点伴随车对进行属... 为解决多阶任务并行的相似轨迹查询(MPST)当执行基于轨迹相似度的车辆轨迹查询时产生大量无用数据和冗余数据进而导致系统性能下降的问题,提出一种基于环域计算的无用数据删除和冗余数据合并方法.该方法采用环域结构对点伴随车对进行属性判别——偶然伴随属性或有效伴随属性,并通过对偶然伴随车对(即无用数据)的删除和有效伴随车对(即冗余数据)的合并来减少中间结果的大小,进而减少系统的I/O开销,缩短响应时间.为了验证本方法的有效性,实现了数据删除与合并的相似轨迹查询(EMSR)原型.实验结果表明:与MPST相比,EMSR生成的中间结果集为MPST的5.7%~11.2%,系统响应时间为MPST的30.2%~57.7%. 展开更多
关键词 相似轨迹 伴随车辆 无用数据删除 冗余数据合并 车牌识别数据
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巴塔耶“无业的否定性”概念的情感内涵
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作者 王春明 《复旦学报(社会科学版)》 北大核心 2025年第1期101-107,共7页
学界向来视“无业的否定性”为巴塔耶思想的标志性概念,但在对其内涵的解释上却往往流于表面。通过回顾巴塔耶在何种语境下提出“无业的否定性”这一概念,并继而展现“无业的否定性”如何作为总的问题意识引领着他就人类活动(以献祭、... 学界向来视“无业的否定性”为巴塔耶思想的标志性概念,但在对其内涵的解释上却往往流于表面。通过回顾巴塔耶在何种语境下提出“无业的否定性”这一概念,并继而展现“无业的否定性”如何作为总的问题意识引领着他就人类活动(以献祭、礼物、政治和色情为范例)和人的生存作出的阐释与分析,本文尝试说明巴塔耶之所以将人之本性及其生存的规范意义界定为“无业的否定性”,从根本上讲是出于他对情感的重视与理解。巴塔耶着重关注人类活动的情感维度,并认定情感是无所求、无所用的耗能活动。其“无业的否定性”概念的实质内涵也正在于此。巴塔耶所说的“无业的否定性”最终落实在人类情感活动的无用性当中。在巴塔耶那里,“无业的否定性”是一个贯穿始终的问题视角,他对于种种人类活动的考察均围绕这一视角展开。 展开更多
关键词 否定 情感 无用 生存论 人类学
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弗莱克斯纳“无用知识”观及其教育意义
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作者 顾书赟 柳亮 《扬州大学学报(高教研究版)》 2025年第3期43-54,共12页
针对过度功利化倾向在大学蔓延的风险,弗莱克斯纳颇为预见性地提出了应当追求“无用知识”的观点。“无用知识”观继承西方理性主义教育传统,以好奇心为驱动,对大学发展、科技进步与思想解放具有重大的潜在意义,它是弗莱克斯纳大学思想... 针对过度功利化倾向在大学蔓延的风险,弗莱克斯纳颇为预见性地提出了应当追求“无用知识”的观点。“无用知识”观继承西方理性主义教育传统,以好奇心为驱动,对大学发展、科技进步与思想解放具有重大的潜在意义,它是弗莱克斯纳大学思想的集中表达,也是对“有用知识”的深刻批判与反思。重识弗莱克斯纳的学术思想遗产可以为当今中国大学改革和高质量发展提供有益启示。 展开更多
关键词 弗莱克斯纳 “无用知识”观 无用知识之用 高等教育高质量发展
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人工智能时代,文科的春天
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作者 葛四友 《新文科教育研究》 2025年第3期105-118,143,144,共16页
人工智能(AI)时代蔓延的“文科无用论”有待系统反驳,AI带来的闲暇与富足恰恰为文科复兴提供历史契机。AI对所有学科均造成无差别冲击;文科的低复杂度岗位虽被取代,但AI同样冲击理工科职位。当AI大幅提高生产率、缩短劳动时间,人类生活... 人工智能(AI)时代蔓延的“文科无用论”有待系统反驳,AI带来的闲暇与富足恰恰为文科复兴提供历史契机。AI对所有学科均造成无差别冲击;文科的低复杂度岗位虽被取代,但AI同样冲击理工科职位。当AI大幅提高生产率、缩短劳动时间,人类生活重心将从“谋生”转向“消费与自我实现”,哲学、史学、文学等文科所培育的批判思维、审美体验与伦理判断力遂成为新社会结构的核心黏合剂。文科内在价值受到忽视缘于“吃苦—换资源—变人上人”的传统观念,并倡导以“兴趣驱动、成为更好的自己”的新观念取而代之:教育应由选拔制转为培养制,帮助个人挖掘潜能,提升从既定资源中获得幸福的能力。人类若不能借助文科重塑制度与观念,AI成果将被少数特权垄断,技术进步反致奴役;唯有文科的春天的兴起才能实现公平与共享,方能使AI时代真正成为人类精神解放与全面发展的新时代。 展开更多
关键词 人工智能时代 “文科无用论” 工具价值 目的价值
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