Another look at Huber's estimator: A new minimax estimator in regression with stochastically bounded noise

Huber's estimator has had a long lasting impact, particularly on robust statistics. It is well known that under certain conditions, Huber's estimator is asymptotically minimax. A moderate generalization in rederiving Huber's estimator shows that Huber's estimator is not the only choice. We develop an alternative asymptotic minimax estimator and name it regression with stochastically bounded noise (RSBN). Simulations demonstrate that RSBN is slightly better in performance, although it is unclear how to justify such an improvement theoretically. We propose two numerical solutions: an iterative numerical solution, which is extremely easy to implement and is based on the proximal point method; and a solution by applying state-of-the-art nonlinear optimization software packages, e.g., SNOPT. Contribution: the generalization of the variational approach is interesting and should be useful in deriving other asymptotic minimax estimators in other problems.     

我国可再生能源发展的障碍分析与政策选择

发展可再生能源对保障能源安全、调整能源结构、保护生态环境、实现可持续发展具有重大意义。但我国在发展可再生能源过程中还存在着认识不足、成本太高、技术水平较低、市场不稳定和政策法律体系不完善等诸多障碍。本文对这些障碍进行了具体分析,并有针对性地提出了相应的政策建议。     

Does the Person‐of‐the‐Therapist Training (POTT) Promote Self‐Care? Personal Gains of MFT Trainees Following POTT: A Retrospective Thematic Analysis

As we recognize how taxing our profession can be, therapist's self‐care has become a salient topic in mental health. However, we are still discerning how to promote self‐care in our practice and in training. In this paper, we present a study on the personal gains that MFT students experienced after participating in the Person‐of‐the‐Therapist Training (POTT). We propose that the reported changes (better understanding of self, change to self, relational changes, and change as a process) constitute improvements in the trainees’ well‐being, and can therefore be considered self‐caring behaviors and practices. We state that models like POTT, that focus on embracing our vulnerability, can help clinicians be more caring toward ourselves. We conclude this paper by presenting clinical and training recommendations.     

Establishing a new scopic regime: the new landscape painting of Mao’s era

ABSTRACT

After 1949, with ‘serving the people’ established as the basic guideline of art, the reform of traditional landscape painting, which had been appropriated by the cultural elites for thousands of years, was put on the agenda as well. Beginning from the early of 1950s, there were continual debates on the reform of traditional Chinese painting within the art field, through which many artists gradually reached a consensus on the development direction of Chinese painting. At the same time, stimulated by the large-scale xiesheng movement sponsored by the government, Chinese landscape painting changed dramatically in subject, theme, and brushstroke technique, and developed a new style which has its own signifying system. Blending both Chinese and western drawing skills, the new landscape painting successfully created a unique scopic regime, which can establish an organic relationship between personal aesthetic experience and collective historical experience. As a prominent cultural achievement of Mao’s era, the new landscape painting embodies the cultural politics and the technologies of the self at that time.     

《寡妇赞歌》的文化融合主题

葆拉·马歇尔是美国当代最具代表性的黑人女性移民作家之一.其小说《寡妇赞歌》围绕主人公艾维在加勒比海的四天之旅展开其一生寻求文化家园的历程.通过分析艾维无法在美国文化中找到归属感,最终在西印度文化中建构自我的过程,试图揭示小说的文化融合主题,并指出加勒比裔的美国移民后代可以在非洲共同的文化经验中找到文化家园.     

临终关怀制度构建:挑战与线路图

临终关怀对于减轻身心痛苦和死亡恐惧的显著作用已经得到国内外数十年研究成果的充分证明。据世界卫生组织及国内外专业期刊统计数据,中国临终关怀现状堪忧,中国社会老龄化及城市化加速发展使临终关怀事业遭遇日益严峻的挑战,体现于医疗资源分配不平等、法律法规缺位、职业培训不足和程序化措施不力。研究基于国内过去30年来临终护理经验教训的现实,以充分数据资料分析中国临终关怀体系建构在观念层面、财政保险资金层面、法律法规层面、教育培训层面和医护制度层面所面临的挑战,指出问题的核心是医护观念陈旧和政府投入严重不足,解决问题的关键在于临终关怀法律法规体系的构建,具体为临终关怀法规与医保管理的制度性优化、拓宽慈善资源和培育临终医护资源。     

自由现金流假说相关研究回顾:一个综述报告

Jensen基于信息经济学理论提出的自由现金流假说已成为当今最为流行的公司财务理论的核心概念之一,它建立在代理成本研究的基础上,是对代理理论的一大发展.在这一领域,国内外学者分别从不同的角度对:(1)自由现金流是否存在代理成本;(2)负债的"控制假说"效应;(3)FCF对收购行为及收购收益的影响;(4)作为FCF的一种支付方式一股利政策等方面进行了大量的实证检验.本文试图对这一领域国内外研究现状和最新进展作一系统的梳理和评述,以期为关心该领域问题的人士提供一些新的视角和研究参考.     

论马克思哲学的实践概念

马克思哲学的实践概念终结了实践哲学,开辟了哲学实践。马克思在人的感性的对象性活动中,不是创建了实践哲学,而是丰富了哲学实践。通过人的感性的对象性的社会活动、历史活动和世界活动,哲学政治化,政治哲学化,这是我们思考马克思哲学实践概念必须面对的,也是我们探讨当今全球社会实践无法回避的。     

社会身份焦虑感刍议——以奥斯卡·王尔德为例

西方社会中个体的身份焦虑感伴随着资本主义制度的发生、发展而滋生和扩散。人们在解决了身体温饱需求后,开始争取社会地位,以求赢得他人的尊重。这种心理的"温饱度"能够帮助人们判断自己的能力和价值,获得自我存在的确定性。王尔德一生中令人费解的种种行为可作为社会身份焦虑感的极佳诠释。透过他我们可以看到,个体对身份的焦虑应被更高层次的价值追求所代替,才能实现真正有意义的人生。     

论清以前幕府演变和游幕文人

幕府随着社会历史等条件的变化不断演变.通过入幕的文人,幕府与文学、学术文化始终保持着持久而紧密的联系.研究中国文学,幕府是一个很好的切入角度.