With the rapid development of renewable generators such as distributed photovoltaic and profound changes of the power structure, this paper analyzes the frequency characteristics of the power system with high penetration of renewable generations in the process of low-frequency load shedding and discusses the influence of the distributed renewable generator frequency endurance capabilities on the implementation effect of low-frequency load shedding in detail. Finally, the influences of the distributed renewable generator frequency endurance capability and the capacities of the distributed renewable (...) generator on frequency response characteristics of an actual Hunan power grid are simulated. The simulation results show that more distributed photovoltaic capacity without frequency endurance capability leads to deeper frequency drops after the disturbance and requires more basic rounds of load shedding. When the penetration rate of distributed photovoltaic is too high, it may cause load shedding, resulting in power grid load losses and, at the same time, leading to an overshoot phenomenon in the process of frequency recovery. Therefore, the influence of distributed photovoltaic on the control of low-frequency load shedding should be considered when designing low-frequency load shedding schemes for the power grid with high penetration of distributed photovoltaic. (shrink)

ObjectiveTo explore the effect of independently developed transcranial pulsed current stimulation on alleviating athlete’s mental fatigue.MethodsA total of 60 college athletes were randomly divided into the active stimulation group and the sham stimulation group. Subjective questionnaires, behavior test, and functional near-infrared spectroscopy test were conducted before and after the experiment. Two-way ANOVA with repeated measures was used to compare the differences in mental fatigue indexes before and after the two experimental conditions.ResultsAfter 7 days of exercise training, there was a significant (...) difference in the main effect of the time factor in all indexes of the two groups. The scores of rated perceived exertion scale, positive and negative affect schedule, critical flicker frequency, and reaction time, in the tPCS treatment group, were better than those in the sham stimulation group. After 7 days of exercise training, all the subjects had different degrees of athlete’s mental fatigue; the subjects in the active stimulation group have a good evaluation of the tPCS developed by the research group without adverse actions.ConclusiontPCS intervention can improve emotional state, reduce the subjective evaluation of fatigue, improve behavioral levels such as attention and reaction time and increase cerebral prefrontal blood flow and oxygen supply. (shrink)

Although sufficient attention has been paid to residents' attitudes to tourism in previous studies, few studies have used residents' attitudes to tourists and tourism simultaneously to explain their support for tourism. This study fills this gap by examining the effect of place image and host–tourist interactions on residents' attitudes to tourists and tourism, respectively, and their consequent reactions by considering the moderating effect of Chinese traditionality. The proposed model is tested using data from 357 residents living in Huangshan, a fifth-tier (...) city in China. Results demonstrate that attitudes to tourism and host-tourists interaction positively affect their pro-tourism behaviours. Moreover, attitudes to tourism mediate place the image's, host–tourists interaction's and attitudes to tourists' respective relationships with pro-tourism behaviours. Furthermore, the higher the Chinese traditionality of residents, the stronger the influence of their attitudes to tourism on pro-tourism behaviours. However, the relationship of place image and attitudes of residents towards tourists with pro-tourism behaviours are not supported. Findings offer critical implications for planners, practitioners and interested researchers. (shrink)

Literature shows that psychological phenomena, including values, personality, and behaviors, are geographically clustered. The effects of temperature on interpersonal and intergroup aggression have been studied by many social psychologists. To date the interactions between temperature and other geographical factors have not been addressed. This study is aiming to examine the effects of thermal demands and the moderating effects of natural geographical factors on aggressive behavior at national level. Data for 156 societies was obtained from publicly available databases. Consistent with the (...) life-history theory, results of this study showed that aggressive behavior has a positive relationship with heat demands, and a negative relationship with cold demands. Aggressive behavior is also positively correlated with sunlight and altitude, and negatively correlated with coastline vicinity. Forest, coastline vicinity, and rainfall moderated the effect of thermal demands on aggressive behavior. In societies with more forests, with more rainfall, and closer to coastline, the negative effects of cold demands on aggressive behavior are stronger. (shrink)

PurposeWhite matter damage (WMD) was defined as the appearance of rough and uneven echo enhancement in the white matter around the ventricle. The aim of this study was to develop and validate a risk prediction model for neonatal WMD.Materials and MethodsWe collected data for 1,733 infants hospitalized at the Department of Neonatology at The First Affiliated Hospital of Zhengzhou University from 2017 to 2020. Infants were randomly assigned to training (n= 1,216) or validation (n= 517) cohorts at a ratio of (...) 7:3. Multivariate logistic regression and least absolute shrinkage and selection operator (LASSO) regression analyses were used to establish a risk prediction model and web-based risk calculator based on the training cohort data. The predictive accuracy of the model was verified in the validation cohort.ResultsWe identified four variables as independent risk factors for brain WMD in neonates by multivariate logistic regression and LASSO analysis, including gestational age, fetal distress, prelabor rupture of membranes, and use of corticosteroids. These were used to establish a risk prediction nomogram and web-based calculator (https://caowenjun.shinyapps.io/dynnomapp/). The C-index of the training and validation sets was 0.898 (95% confidence interval: 0.8745–0.9215) and 0.887 (95% confidence interval: 0.8478–0.9262), respectively. Decision tree analysis showed that the model was highly effective in the threshold range of 1–61%. The sensitivity and specificity of the model were 82.5 and 81.7%, respectively, and the cutoff value was 0.099.ConclusionThis is the first study describing the use of a nomogram and web-based calculator to predict the risk of WMD in neonates. The web-based calculator increases the applicability of the predictive model and is a convenient tool for doctors at primary hospitals and outpatient clinics, family doctors, and even parents to identify high-risk births early on and implementing appropriate interventions while avoiding excessive treatment of low-risk patients. (shrink)

本书共分为三个部分:即书信、论文和附录。第一部分是钱学森和大家来往的信件,共收入来往书信近480封,其中包括钱学森给大家的信件233封。第二部分是论文。收入钱学森院士有关建筑科学的著作9篇,从这些论文 中可以领会到钱学森建筑科学思想的精髓。本书也收入了作者撰写的文章,反映了作者对钱学森建筑科学思想的研究和探索。最后部分是附录.

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。.

在西化、現代化、全球化的衝擊下， 華人如何奮鬥掙扎，在公私領域裡安身立命？ 從思想史的角度切入， 就家族倫理、宗教信仰、美學思想、政治理念、文化衝擊、自我認同等面向， 析論梁啟超、李叔同、林語堂、徐復觀等民國知識分子， 深入呈現20世紀的華人精神世界。 在舊社會、舊道德傾頹之際，現代華人不僅要創建公私領域內的制度性架構，更要摸索相應的信仰與價值觀。《安身立命》探討梁啟超、李叔同、林語堂等人，如何分別在儒家、佛教、道家、基督教的引領下做生命的實踐；也以 徐復觀在台灣的經驗為例，說明兩岸文化如何激盪交融，和以儒家民主及儒家美學建立「華人現代性」的可能性。最後，作者李淑珍思考人格主義在全球化時代的意義，肯定儒家不論在公領域或私領域，依然是華人安身立命的重 要精神資源。全書理性與感性兼具，值得細細品味。.

華藝數位（airiti Press Inc.）自西元 2000 年成立以來，促進兩岸學術的交流，為華文學術環境貢獻心力，一直是華藝努力不懈的目標。華藝一貫秉持「創新華文知識服務」的精神，陸續建構電子期刊、論文、電子書等產品，讓全球的學術研究者能便捷地取得華文學術結 晶，致力將臺灣的學術研究拓展至全世界。 2009 年華藝將旗下學術資源平台進行整合，完成了「airiti Library 華藝線上圖書館」的架設，提供一個整合臺灣、大陸兩岸學術資源的檢索平台，結合強大的搜尋引擎功能，讓所有的學術文獻發揮關聯性與影響力，透過此單一檢索介面，即可跨學科、跨領域搜尋文獻來源，滿足眾多閱讀需求。 然全球的網路資源分布不甚平均，此一檢索平台仍有不能顧及之處，故華藝在2011 年又著手編製《臺灣優質期刊要目總覽》，以祈能便利更多的學術研究者在參閱與選訂臺灣學術期刊時提供參考。 《臺灣優質期刊要目總覽》中所收錄的期刊，主要是從「airiti Library 華藝線上圖書館」之 CEPS 中文期刊資料庫與「ACI 學術引用文獻資料庫」中精選的近千種臺灣優質期刊，以 A&HCI、THCI、SCI、SSCI、EI、TSSCI、Medline 等相關標準收錄，並依人文學、社會科學、自然科學、應用科學、醫學與生命科學等五大學術領域進行分類與統整，最後編輯而成。.

本书是研究20世纪中国美学思想家宗白华的专论，阐述了宗白华美学思想的形成、发展，并兼及相关的思想文化和社会政治背景。.

本书主要通过比较分析和历史分析的方法,通过对当今世界代表大陆法系的德国和代表英美法系的美国的证据收集制度的全面研究,以及对站在美国和德国中间点的日本的证据收集制度的研究等,为中国的证据收集制度寻找有益 的借鉴.同时,本书在研究中国特有的国情和文化的基础上,试图找到一个适合中国特色的证据收集制度,以保障案件事实的发现,促进司法正义的实现.

當資本主義以身體（特別是女人的身體）作為獲利的媒介，並時時刻刻提醒我們：「幸福是要靠著某種身體來獲得」時，課堂上的教學實踐成為批判常識以及讓 學生充權的最佳場域。Paul Freire (1992) 在Pedagogy of the Oppressed提出，受壓迫者的教學應由自身生活經驗和情感出發，並解構這些經驗，讓學生瞭解不同的權力關係如何型構這些日常生活經驗，並進而改變現 實社會的不平等。Freire和女性主義不謀而合地均以日常經驗為出發點，作為教學的素材，並以分析權力運作來改變被壓迫者的現況作為教學目標。女性主義 者更進一步將身體問題化，並將此帶入教學中，思考身體和教學實踐之間的關係。 這本書凝聚不同學門領域的教師，書中處理了教學現場裡以及歷史上各種不同與相同的身體經驗，並記錄教學執行者自身的研究反思，以及教學實踐之教案、實施結果分析、研究手札。這些寶貴的教學實踐與研究所得來的身體經 驗，皆是創造新論述的重要資源。.

本书对党的十一届三中全会以来,特别是山东省近13年来精神文明建设中的理论和实践问题进行了总结和研究探索。.