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1. chinaXiv:202106.00114 [pdf]

RLEPSO:Reinforcement learning based Ensemble particle swarm optimizer

尹世远
Subjects: Computer Science >> Computer Software

Evolution is the driving force behind the evolution of biological intelligence. Learning is the driving force behind human civilization. The combination of evolution and learning can form an entire natural world. Now, reinforcement learning has shown significant effects in many places. However, Currently, researchers in the field of optimization algorithms mainly focus on evolution strategies. And there is very little research on learning. Inspired by these ideas, this paper proposes a new particle swarm optimization algorithm Reinforcement learning based Ensemble particle swarm optimizer (RLEPSO) that combines reinforcement learning. The algorithm uses reinforcement learning for pre-training in the design phase to automatically find a more effective combination of parameters for the algorithm to run better and Complete optimization tasks faster. Besides, this algorithm integrates two robust particle swarm variants. And it sets the weight parameters for different algorithms to better adapt to the solution requirements of a variety of different optimization problems, which significantly improves the robustness of the algorithm. RLEPSO makes a certain number of sub-swarms to increase the probability of finding the global optimum and increasing the diversity of particle swarms. This proposed RLEPSO is evaluated on an optimization test functions benchmark set (CEC2013) with 28 functions and compared with other eight particle swarm optimization variants, including three state-of-the-art optimization algorithms. The results show that RLEPSO has better performance and outperforms all compared algorithms.

submitted time 2021-06-29 Hits4655Downloads346 Comment 0

2. chinaXiv:202106.00111 [pdf]

Zero-knowledge Based Proof-chain: A methodology for blockchain-partial system

Yuqi Bai; Lei Luo; Shixin Liang
Subjects: Computer Science >> Computer Software

Intuitively there is drastic distinction between the “pure” decentralized block-chain systems like Defis and those that only utilizes block-chain as an enhancing technology but remains centralized with real-world business model and conventional technologies like database, application server etc. Our study explores extensively this distinction from a methodological point of view, classifies them into blockchain-complete and blockchain-partial, analyzes key features of the two types, and reveal the root cause of this distinction. We analyze the function or, in more strong words, the “ultimate purpose” of blockchain in the blockchain-partial systems, and present a conceptual model we named proof-chain that quite satisfactorily represented the general paradigm of blockchain in blockchain-partial systems. A universal tension between strength of proof-chain and privacy is then revealed and the zero-knowledge based proof-chain takes shape. Several case studies demonstrate the explaining power of our proof-chain methodology. We then apply proof-chain methodology to the analysis of the ecosystem of a collaborating group of blockchain-partial systems, representing the paradigm of public and private data domain whose border the proof-chain crosses. Finally, some derived guidelines from this methodology speaks usefulness of our methodology.

submitted time 2021-06-29 Hits5132Downloads449 Comment 0

3. chinaXiv:202106.00112 [pdf]

从个体到集体:心理学视角下的集体记忆

葛耀君; 李海
Subjects: Psychology >> Social Psychology

[目的]探讨集体记忆形成与维护的心理机制。 [方法] 采用流行病学研究方法,系统探讨集体记忆形成的心理机制。 [结果] 系统阐释了集体记忆形成中的社会传染、检索诱发遗忘、共享现实和网络聚合等心理机制;聚焦于既存的记忆,阐释了集体记忆有效性的心理原则。 [局限]文化记忆的有效性研究不足,对媒介技术变革引发的记忆变化敏感性不够。 [结论] 集体记忆心理学研究取得一定成果,但仍需拓展视野,积极推进本土化研究。 关键词 集体记忆;对话;流行病学;交流记忆;文化记忆

submitted time 2021-06-28 Hits2870Downloads362 Comment 0

4. chinaXiv:202106.00108 [pdf]

不同社交媒体使用目的对员工工作绩效的影响机制

李巧灵; 赵君哲; 乔诗绮; 郭腾飞; 王明辉; 赵国祥
Subjects: Psychology >> Management Psychology

基于工作要求—资源理论,本研究探讨了两种社交媒体使用目的对员工工作绩效影响的内部作用机制,进而分析两种社交媒体使用目的对员工工作绩效的影响效果。通过369份“领导者—下属”匹配数据,研究发现:(1)基于工作、社交的社交媒体使用均促进员工工作绩效;(2)基于工作、社交的社交媒体使用均通过工作投入影响工作绩效,基于社交的社交媒体使用还通过关系冲突影响工作绩效;(3)社交媒体的工作使用和社交使用对员工工作绩效的影响存在相互替代关系。本研究结果不仅从理论上拓展了社交媒体使用的研究视角,为后续研究提供新的理论框架,同时通过比较分析为组织管理社交媒体使用提供了新思路。

submitted time 2021-06-28 Hits2833Downloads609 Comment 0

5. chinaXiv:202106.00109 [pdf]

开放获取进程中的关键问题探究.doc

廖宇(研究生); 沈哲思; 刘敬仪
Subjects: Library Science,Information Science >> Library Science

【目的】梳理开放获取(Open Access,简称 OA)关键节点,分析其前因后果,为领域相关人员提供有益的参考【方法】综合运用了文献研究法、归纳法和案例分析法,系统梳理开放获取的关键节点,从起源、主要成效、面临阻碍、发展现状和前景等5个方面解读开放获取进程的关键问题及其前因后果【结果】开放获取在学术交流进程中发挥举足轻重的作用,其成效日益凸显,但同时也遇到来自经费、质量控制、知识产权保护、商业出版商、学界等方面的问题【结论】探析开放获取的发展可为利益相关方提供有意义的借鉴与思考,此外,在当前学术出版不稳定期,需要各界源源不断地贡献更多的智慧,共同推进开放获取。

submitted time 2021-06-26 Hits11275Downloads430 Comment 0

6. chinaXiv:201904.00075 [pdf]

A Possible Modified Dispersion Relation

胡锦文
Subjects: Physics >> Geophysics, Astronomy, and Astrophysics

本文引入了一个参量n来表征不同惯性系间光速的变化。为了满足众所周知的基本原理,又不违背一些可靠的实验结果,我们应该对n施加一些必要的约束。首先,重要的是,n的引入应该符合以下三个原则:(1)我们可以用一个规定的时钟同步来定义整个空间中的时间;(2)时间是均匀的,空间是各向同性的;(3)所有的惯性系统都是等价的,这是对狭义相对论(SR)思想的继承。在n的一些约束条件下,我们构造了一个满足惯性系对称性的一般坐标变换。近年来,许多理论都表现出对超高能量尺度下洛伦兹不变性的破坏的兴趣,例如量子引力,它暗示粒子的能量有一个有限值(称为普朗克能量),而不是从洛伦兹模型导出的无限值。因此我们构造一个n的表达式来描述洛伦兹模型的违逆。进一步,通过与著名的彩虹模型比较,我们发现本文推导的“最大能量”与彩虹模型假设的“最大能量”有一定的关系。

submitted time 2021-06-26 Hits27246Downloads1177 Comment 0

7. chinaXiv:202106.00110 [pdf]

利用一对多尿液蛋白质组比较为发热待查提供线索

赵晨阳; 魏利龙; 魏静; 高友鹤
Subjects: Biology >> Biochemistry

发热待查是指不明原因的发热,尽管医疗诊断技术在不断发展,但是发热待查仍旧是亟待解决的难题。尿液是机体排泄代谢废物的一种途径,由于不受到稳态调节机制的影响,尿液能反映机体产生的微小变化,比血液更早期、更敏感。在本研究中,我们对收集的尿液样本采用一对多的尿液蛋白质组比较方法,即一个病人和一组健康人样本对比分析的方法,旨在通过差异蛋白来寻找与疾病相关的生物学通路,为发热待查的临床诊断提供线索和依据。分析结果表明,差异蛋白富集到的生物学通路与发热有关,尿蛋白质组能够提供病人和健康人的区别;同时一对多的研究方法能为发热待查患者提供个性化的线索,也是未来探索病人未知疾病的一个方法。

submitted time 2021-06-25 Hits6335Downloads501 Comment 0

8. chinaXiv:202106.00106 [pdf]

A fragment of Argoland from East Gondwana in the NE Himalaya

Ji’en Zhang; Wenjiao Xiao; John Wakabayashi; Brian F Windley; Chunming Han
Subjects: Geosciences >> Geology

Previous studies have concluded that a Trans-Tethyan oceanic subduction zone existed prior collision of India-Eurasian plates, between which the ocean lacked intervening continental slivers. In contrast, we present first geological evidence of Early Cretaceous shortening and Late Jurassic alkali magmatism constraining that the Longzi block, an extensive (>450 km E-W by ca. 130 km N-S) tract of the NE Himalaya is such a continental sliver. The Longzi block records overturned south-vergent folds in Triassic to Lower Cretaceous strata intruded by 136-123 Ma mafic, dioritic, and dacite dikes, constraining Early Cretaceous shortening. The shortening demonstrates the NE Himalayan locating in a compressional setting, rather than an extensional Indian passive continental margin at that time. Triassic strata of NW Australian affinity and Late Jurassic rocks sourced from north India record pre-rifting history. Rifting evidence includes 152.8 Ma alkali intrusive rocks, a Late Jurassic unconformity, and rapid changes in sediment thickness and apparent water depth of deposition recorded in Upper Jurassic strata. The rifting event is coeval with 152-155 Ma oceanic crust in the NE Indian Ocean and a Late Jurassic submarine escarpment with 1200 m of sediments offshore of NW Australia. These data may reflect rifting of the westernmost Argoland continent in NE Himalaya from East Gondwana, followed by collision with a N-dipping Trans-Tethyan intra-oceanic subduction zone in the Early Cretaceous, long before terminal continent-continent collision. The Mesozoic rifting-collision in the Himalayan region unambiguously presents archipelagic paleogeography in eastern Neotethyan, which underwent Cenozoic two-stage Indian-Eurasian collisional processes.

submitted time 2021-06-24 Hits3917Downloads361 Comment 0

9. chinaXiv:202106.00107 [pdf]

家人情感卷入对老年自我刻板印象的影响:基于潜变量增长模型的分析

徐冉; 张宝山; 林瑶
Subjects: Psychology >> Developmental Psychology

本研究使用问卷法对257名老年人进行了历时一年的三次追踪测试,采用潜变量增长模型与交叉滞后回归分析考察了家人情感卷入与老年自我刻板印象的变化趋势,家人情感卷入发展与老年自我刻板印象发展的关系,以及家人情感卷入对老年自我刻板印象的时序效应。结果发现:(1)老年人感知到的家人情感卷入在一年内呈线性递减,而老年自我刻板印象呈线性增长;(2)家人情感卷入的初始水平负向预测老年自我刻板印象的初始水平与增长速率;(3)家人情感卷入的下降速率也显著预测了老年自我刻板印象的增长速率;(4)交叉滞后回归分析进一步支持了老年人家人情感卷入对老年自我刻板印象的总体负向预测作用。本研究为老年刻板印象内化的家庭过程提供了理论支持,并对减少老年刻板印象内化、改善消极老年自我刻板印象的干预具有一定的实践价值。

submitted time 2021-06-23 Hits3336Downloads954 Comment 0

10. chinaXiv:202106.00105 [pdf]

班主任协商管理行为、师生关系与小学4~6年级学生外化问题行为的相互作用关系:交叉滞后研究

谢其利; 郑惠珍; 江光荣; 任志洪; 樊燕飞; 刘加怀; 张文
Subjects: Psychology >> Educational Psychology

为探讨班主任协商管理行为、师生关系和学生外化问题行为三者间的相互作用关系,在1个学年中,采用问卷法对1407名小学4~6年级学生进行3次追踪测量。交叉滞后分析结果表明:(1) 班主任协商管理行为启动积极的相互作用过程,T1时的班主任协商管理行为能显著减少T2时的学生的外化问题行为、提升T2时的师生关系亲密和降低T2时的师生关系冲突,进而显著影响T3时的班主任协商管理行为、师生关系和学生外化问题行为;(2) 学生外化问题行为驱动消极的相互作用过程,T1时的学生外化问题行为能显著减少T2时的班主任协商管理行为、降低T2时的师生关系亲密和增加T2时的师生关系冲突,进而显著影响T3时的学生外化问题行为、师生关系和班主任协商管理行为。研究结果支持动态相互作用模型,提示班主任在警醒学生外化问题行为的负面驱动作用的同时,可有意识地利用协商管理行为的积极驱动作用干预学生的外化问题行为。

submitted time 2021-06-22 Hits6838Downloads469 Comment 0

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