提升初中生数学学习效能感“三策略”

所谓学习的效能感,是学生在学习实践中自主生成的效能体验,源于认知、情感、态度等多方面的共同影响.根据教育效能理论,学生的效能感可以分为过程效能及结果效能,但是不管哪种方式,其核心都是为了推动学生的终身学习及发展.在素养涵育中,具体的学习过程并非是为了掌握知识、占有知识,而是为了将知识成功转化为智慧、转化为能力,就此生发积极的创新体验,实现效能感的持续提升.在这样的状态下,每个学生都能爱上数学,能展开有价值的学习,得到更高层面的提升.     

Probabilistically implementing nonlocal operations between two distant qutrits

We propose a method to probabilistically implement a nonlocal operation, $% \exp {[}\i\xi U_{A}U_{B}{]}$, between two distant qutrits $A$ and $B$, where $% \xi \in [0,2\pi ]$ and $U_{A}$, $U_{B}$ are local unitary and Hermitian operations for qutrits $A$ and $B$ respectively. The consumptions of resource for one performance of the method are a single non-maximally entangled qutrit state and 1-trit classical communication. For a given $\xi $% , the successful probability of the method depends on the forms of both entanglement resource and Bob's partial-measurement basis. We systematically discuss the optimal successful probabilities and their corresponding conditions for three cases: adjustable entanglement resource, adjustable partial-measurement basis, adjustable entanglement resource and partial-measurement basis. It is straightforward to generalize the method for producing nonlocal unitary operations between any two $N$-level systems.     

CFO行踪

日前,趣游（北京）科技有限公司对外宣布,CFO赖佑明（JimmyLai）正式上任。据了解,赖佑明拥有中国台湾国立成功大学统计学专业学士学位,以及美国德州大学工商管理硕士学位,曾辅助多家国内公司完成海外上市。     

黑龙江省第十二届珠算技术比赛大会闭幕词

黑龙江省第十二届珠算技术比赛大会，经过两天紧张而又激烈的拼搏，取得了优异的成绩，获得了圆满的成功！在此，我代表本次大会组委会，向参赛的各代表队，各位领队、教练、选手表示热烈地祝贺！     

Two Schemes for Probabilistic Remote Preparation of a Four-Particle Entangled Cluster-Type State

Using partial entangled states as the quantum channel, two schemes for probabilistic remote preparation of the four-particle cluster-type state with real and complex coefficients are presented. In the first scheme, the sender and the receiver share two partial Bell states and one partial three-qubit GHZ stats as the quantum channel, and the sender can help a remote receiver to prepare a four-particle entangled cluster-type state by using three-qubit projective measurements with certain probability. In the second scheme, the quantum channel is composed of two partial three-qubit GHZ states, the remote state preparation （RSP） can be successfully realized via the positive operator valued measure （POVM）, and the two-particle projective measurements are also needed in this process. The total success probability and classical communication cost are calculated.     

2018年度全国检测声学会议成功召开

2018年度全国检测声学会议成功召开     

中国制造业实施六西格玛管理的成功关键要素分析

自摩托罗拉公司于1987年提出六西格玛概念以来,六西格码管理已逐渐成为质量改进的主流方法之一。尽管不少学者和咨询专家对实施六西格玛管理的成功关键要素进行了探讨,但都是基于理论分析或定性描述。本文在综述国内外相关研究文献的基础上,提出了实施六西格玛管理的成功要素概念模型,并通过调查问卷和利用结构方程模型,对中国制造业实施六西格玛管理的关键成功要素进行了实证分析。研究结果表明:领导层的高度关注,建立并实施合适的六西格玛战略,以顾客和市场为关注焦点,并通过有效的成果测量、评价和奖励方法,选择、管理和实施六西格玛项目是实施六西格玛管理的关键成功要素;同时,本文也分析了这些要素之间的因果关系。     

亮点介绍

通过三烯胺机制催化2,4-二烯酮的不对称Diels-Alder反应Angew.Chem.Int.Ed.2012,51,4401～4404三烯胺(trienamine)机制作为新发展的一种有机胺催化模式,已经成功应用于通过HOMO-活化的不对称Diels-Alder反应中,然而仅有的几篇报道都局限于2,4-二烯醛底物.四川大学华西药学院     

特值的寻求方法初探

数学解题中,取特值是必不可少的方法,小题中常用此法,可以避免繁琐的运算,还可以提高准确率.解答题也常用此法,可以缩小变元范围,减少讨论,甚至于当我们取准特值时,能直接获得问