Major events such as the COVID-19 pandemic, Olympic Games, and G20 Summit bring about supplier disruption risks and challenges to supply chain management. To help deal with these risks, a virtual dual-sourcing production-inventory system can be deployed. In this paper, we study such a system which consists of a raw material supplier, a manufacturer, and a virtual dual-sourcing contingency supplier. The manufacturer needs to determine the production, procurement, and inventory plan of raw materials. When its supplier is interrupted, the manufacturer (...) may need to adjust the production and inventory plan and work with the contingency supplier. We develop a system dynamics method to simulate the operations in this production-inventory system to identify the approximately optimal order-up-to-level inventory policies. We find that the virtual dual production-inventory strategy can be the optimal contingency policy to deal with supplier dynamic disruption risks. Furthermore, for disruption risk with low frequency and long duration, the manufacturer should increase the safety inventory level before the disruption. Otherwise, it should increase the safety inventory level in every cycle. (shrink)

Blasting in water-conveyance tunnels that cross rivers is vital for the safety and stability of embankments. In this work, a tunnel project that crosses the Yellow River in the north district of the first-phase Eastern Line of the South-to-North Water Diversion Project was selected as the research object. A complex modeling and numerical simulation on embankment stability with regard to the blasting power of the tunnel was conducted using the professional finite difference software FLAC3D to disclose the relationships between the (...) blasting seismic waves with vibration velocity and embankment displacement under different excavation steps. Calculation results demonstrated that displacement generally attenuated from the tunnel wall to the internal structure of rocks under the effect of blasting seismic waves. The tunnel wall was in tension, and tensile stress gradually transformed into compressive stress with increased depth into the rocks. The curtain-grouting zone was mainly concentrated in the compressive zones. For different excavation steps, the vibration velocity at different feature points was high at the beginning of blasting and then gradually decreased. The resultant displacement was relatively small in the early excavation period and slowly increased as blasting progressed. The effects of different excavation steps on the safety of surrounding rocks and embankment under blasting seismic waves were simulated. We found that the blasting-induced vibration velocity was within the safe range of the code and that the calculated displacement was within the allowed range. Numerical simulation was feasible to assess the safety and stability of engineering projects. (shrink)

Naturalistic stimuli, including movie, music, and speech, have been increasingly applied in the research of neuroimaging. Relative to a resting-state or single-task state, naturalistic stimuli can evoke more intense brain activities and have been proved to possess higher test–retest reliability, suggesting greater potential to study adaptive human brain function. In the current research, naturalistic functional magnetic resonance imaging (N-fMRI) has been a powerful tool to record brain states under naturalistic stimuli, and many efforts have been devoted to study the high-level (...) semantic features from spatial or temporal representations via N-fMRI. However, integrating both spatial and temporal characteristics of brain activities for better interpreting the patterns under naturalistic stimuli is still underexplored. In this work, a novel hybrid learning framework that comprehensively investigates both the spatial (via Predictive Model) and the temporal [via convolutional neural network (CNN) model] characteristics of the brain is proposed. Specifically, to focus on certain relevant regions from the whole brain, regions of significance (ROS), which contain common spatial activation characteristics across individuals, are selected via the Predictive Model. Further, voxels of significance (VOS), whose signals contain significant temporal characteristics under naturalistic stimuli, are interpreted via one-dimensional CNN (1D-CNN) model. In this article, our proposed framework is applied onto the N-fMRI data during naturalistic classical/pop/speech audios stimuli. The promising performance is achieved via the Predictive Model to differentiate the different audio categories. Especially for distinguishing the classic and speech audios, the accuracy of classification is up to 92%. Moreover, spatial ROS and VOS are effectively obtained. Besides, temporal characteristics of the high-level semantic features are investigated on the frequency domain via convolution kernels of 1D-CNN model, and we effectively bridge the “semantic gap” between high-level semantic features of N-fMRI and low-level acoustic features of naturalistic audios in the frequency domain. Our results provide novel insights on characterizing spatiotemporal patterns of brain activities via N-fMRI and effectively explore the high-level semantic features under naturalistic stimuli, which will further benefit the understanding of the brain working mechanism and the advance of naturalistic stimuli clinical application. (shrink)

PurposeTo investigate spontaneous brain activity in patients with dry eye and healthy control using the fractional amplitude of low frequency fluctuation technique with the aim of elucidating the relationship between the clinical symptoms of DE and changes in brain function.Material and MethodsA total of 28 patients with DE and 28 matched healthy volunteers were enrolled. Resting-state functional magnetic resonance imaging scans were performed in both groups. Then all subjects were required to complete a comprehensive Hospital Anxiety and Depression Scale. Receiver (...) operating characteristic curve analysis was used to evaluate the differences in fALFF values between the two groups and their diagnostic value. Linear correlations between HADS and fALFF values in different brain regions of DE patients were analyzed using the Pearson correlation coefficient.ResultsPatients with DE had significantly higher fALFF values in the left calcarine sulcus than the HC group, while fALFF values in the bilateral middle frontal gyrus and right MFG/right inferior frontal gyrus were significantly lower in DE patients than in HC group. fALFF values had a high diagnostic value for differentiating patients with DE from the HC group. Right MFG and right MFG/IFG were significantly correlated with HADS values.ConclusionOur study found that DE mainly involved functional disorders in the brain areas of the left CS, bilateral MFG and right MFG/right IFG, which helped us to find possible clinical features of DE disease and reflected the potential pathological mechanism of DE. (shrink)

Objective: Work stress is one of the urgent public health problems, which has aroused wide attention. In addition, work stress also has a negative impact on the development of enterprises. This study has three purposes: to understand the current status of working stress among couriers, to examine the association between work stress, job satisfaction and sleep quality of Chinese couriers, and to verify the mediating role of psychological capital.Methods: A cross-sectional survey was conducted among 3000 couriers in Beijing of China (...) from January to December 2019 using cluster stratified random sampling. Descriptive statistical analysis was used to describe demographic characteristics of respondents. Pearson correlation analysis was used to analyze the correlation among work stress, job satisfaction, sleep quality, and psychological capital. The mediating analysis was calculated role of psychological capital.Results: A total of 2831 participants were included in this study. The average score of work stress was 2.49 ± 0.76. Work stress was negatively correlated with job satisfaction, sleep quality, and psychological capital, respectively. The direct effect of work stress on job satisfaction is –0.223, and the total effect of work stress on job satisfaction is –0.267. The a*b*c’ is positive, indicating the mediating role psychological capital has in explaining the relationship between couriers’ work stress and job satisfaction. Moreover, psychological capital plays a mediating role between work stress and sleep quality among couriers.Conclusion: Couriers face certain work stress and should be paid attention to and psychological capital can effectively alleviate the work stress of couriers, so measures can be taken to improve it, promoting healthy development of employees and organizations. (shrink)

本书主要对东西文化和中西印哲学作了相当广泛的讨论,涵摄科学哲学、文化哲学、人生哲学、宗教哲学、历史哲学、比较哲学等方面的内容,表现出超越式的融合趋向。.

本书内容包括什么是法社会学、多元化的法概念、社会·法律·法律文化、法与社会制度、法与社会发展、法与社会分层、法与社会问题、法与社会控制、法与社会化、法律职业、法的实现等11章。.

本书以西方诠释学为参照,以《论语》、《孟子》、《荀子》为个案,对先秦儒家的意义生成问题及其特点与具体表现作出了独特而深入的阐析。.

书名原文:Transport processes in plasmas.vol.1,Classisal transport.

內容簡介 經世需要安身，安身常為了經世。經世與安身，如車之兩輪，鳥之雙翼，相輔相成。但是，安身究竟如何經世？經世又怎麼反映安身的狀況？本書的論文，即是希望藉由具體史例，來分析這個重要問題。 劉芝慶，生長於花蓮玉里。關注領域為中國學術思想史，其中又以宋明理學以及先秦諸子、明清近代學術思想史用功最多，發表論文也多分布在這些部分。最感興趣的兩大核心主題，一是古人如何安身立命的問題，二是「達則兼 善天下」（孟子語）如何可能；前者為如何修身，後者為如何經世，兩者時而獨立，又時而交疊，而兩大主題也貫穿了至今的全部研究成果。.

本書著意就道家與中外哲學進行一些比較。全書分為總論篇、分論篇、專論篇、新論篇四大部分，探討了道家哲學在中國傳統文化體系中的地位、思想淵源、現代啟迪以及道家哲學在實踐中的主要成就；重點討論了道家哲學中關 於本體論、有無觀、價值論、宇宙觀、認識論、政治思想、平等思想、審美思想、人生之道等問題；針對現實中突出的問題和容易誤讀、或最有爭議的問題進行分析；探討了國際性新道家熱潮所關注的熱點，並對其發展前景做出 展望。.

本书的中心课题是儒家、佛教与道家之间的哲学对话,这一主题不仅有利于推动对儒学、佛学与道家思想的深入研究,也有利于不同学术领域之间的对话和交流,有着重要的实际的社会意义.

全书结合熊十力、张东荪、金岳霖、康德、罗素等的知识论思想,对当代新儒家学者牟宗三的有关思想进行了系统的批判性研究。围绕“认知的知识”与“道德的知识”这两大知识领域,本书主要分析了牟宗三在建构两类知识以 及论述二者关系过程中所步入的种种理论窠臼,同时也对其形而上学、逻辑哲学、道德哲学等思想进行了评判。借此,本书力图表明当代新儒家知识论的理论意义与制限之处.

Ben shu yi Ming ru Li Cai de jiang xue huo dong yu xue pai jian gou wei zhong xin, tan tao cong shi liu shi ji chu dao shi qi shi ji mo li xue qun ti zhong xin xing xue shuo he xue pai de chan sheng, chuan bo, kuo zhan yu chuan cheng de mo shi, bing zhuo zhong cong si xiang shi de jiao du jie shi zhe zhong mo shi chan sheng he yun xing de (...) si xiang gen yuan yu nei zai dong li. Quan shu zheng wen gong qi zhang, zhu yao nei rong fen wei shang xia liang bian, shang bian yi hong guan zong lun de fang shi, cong li xue jing dian "Da xue" de wen ben bian dong he quan shi jing zheng qie ru, tan tao zhong wan Ming li xue xue shuo he xue pai jian gou de li lun gen ju; xia bian yi Li Cai de "zhi xiu" xue shuo ji qi jiang xue huo dong zuo wei ge an yan jiu, tan tao li xue xue shuo he xue pai de chuan bo ji chuan cheng de she hui hua tu jing. (shrink)

本书以散文诗的语言,格言式的论述,从事业成才、经营致富、职业选择、人际交往等方面,阐述了人们的所思、所长、所求、所忧,提出了一整套精神和心理调适方法和技巧。.

本書是作者為香港科技大學「人生價值觀」課程而做的講稿，講述了作者對於個人與社會、他者、國家、家庭、自我、宗教、自然、死亡、世界、傳統「十大倫理關係」的深刻思考。作者認為，個人的奮鬥與努力固然重要，但每 個個體又必須學會在上述十種重大關係中實現人生的價值，因為這十大關係與個人相對的客體，實質上是個體價值的源泉，這十大關係也就是自我價值的實現途徑。作者學識淵博，思想深邃，而又閱歷豐富，感情深沉，平易而通 透的講述飽含關於人生、社會、歷史等的真知灼見，啟人深思。.