Device and method for providing studying of incorrectly answered question

    公开(公告)号:US11138898B2

    公开(公告)日:2021-10-05

    申请号:US16342248

    申请日:2017-10-13

    申请人: Jong-Ho Lee

    发明人: Jong-Ho Lee

    摘要: Disclosed are a device and method for providing a checking question designed to allow a user to perform the checking study of correct answers or incorrect answers by using the choices of one or more incorrectly answered questions. The device includes: an incorrectly answered question selection unit which selects one or more questions incorrectly answered by a user from among questions provided to the user; a choice extraction unit which extracts correct answers as choices for the respective selected incorrectly answered questions; a checking question generation unit which generates one or more checking questions designed to allow the user to study the incorrectly answered questions by allocating the extracted choices so that the extracted choices become the choices of the checking questions; and a checking study provision unit which provides the study of the incorrectly answered questions by transmitting the generated checking questions to a user terminal.

    Semiconductor memory device and refresh method thereof
    4.
    发明授权
    Semiconductor memory device and refresh method thereof 有权
    半导体存储器件及其刷新方法

    公开(公告)号:US09076504B2

    公开(公告)日:2015-07-07

    申请号:US13661773

    申请日:2012-10-26

    摘要: A semiconductor memory device and a self-refresh method of the semiconductor memory device. The semiconductor memory device includes: a memory cell array including one or more memory cells; a sense amplifier connected to a sensing line and a complementary sensing line and sensing/amplifying data stored in the one or more memory cells; and a sense amplifier control circuit sequentially supplying a first voltage and a second voltage having different levels to the sense amplifier through the sensing line during a refresh operation.

    摘要翻译: 半导体存储器件和半导体存储器件的自刷新方法。 半导体存储器件包括:包括一个或多个存储单元的存储单元阵列; 连接到感测线和互补感测线的感测放大器,以及感测/放大存储在所述一个或多个存储器单元中的数据; 以及读出放大器控制电路,其在刷新操作期间通过感测线路顺序地将具有不同电平的第一电压和第二电压提供给读出放大器。

    Receiver and method for detecting signal in multiple antenna system
    7.
    发明授权
    Receiver and method for detecting signal in multiple antenna system 有权
    用于在多天线系统中检测信号的接收机和方法

    公开(公告)号:US08275076B2

    公开(公告)日:2012-09-25

    申请号:US12386299

    申请日:2009-04-16

    IPC分类号: H04L27/06

    CPC分类号: H04B7/0854 H04L25/03038

    摘要: Provided are a receiver and a method for detecting a signal in a multiple antenna system. The receiver includes a filter coefficient calculator and a signal detector. After separating a first signal portion and a second signal portion, the filter coefficient calculator calculates an MMSE filter coefficient using a Matrix Inversion Lemma such that an inverse matrix of the first signal portion has a predetermined constant value regardless of a repetition signal detection process. The signal detector detects a relevant transmission signal from an interference-removed reception signal using the MMSE filter coefficient.

    摘要翻译: 提供了一种用于检测多天线系统中的信号的接收机和方法。 接收机包括滤波器系数计算器和信号检测器。 在分离第一信号部分和第二信号部分之后,滤波器系数计算器使用矩阵反转引理来计算MMSE滤波器系数,使得第一信号部分的逆矩阵具有预定的常数值,而与重复信号检测处理无关。 信号检测器使用MMSE滤波器系数从去除干扰的接收信号检测相关的发送信号。

    Transistors with multilayered dielectric films and methods of manufacturing such transistors
    8.
    发明授权
    Transistors with multilayered dielectric films and methods of manufacturing such transistors 有权
    具有多层介电膜的晶体管和制造这种晶体管的方法

    公开(公告)号:US08252674B2

    公开(公告)日:2012-08-28

    申请号:US13195935

    申请日:2011-08-02

    IPC分类号: H01L21/3205

    摘要: Transistors that include multilayered dielectric films on a channel region are provided. The multilayered dielectric comprises a lower dielectric film that may have a thickness that is at least 50% the thickness of the multilayered dielectric film and that comprises a metal oxide, a metal silicate, an aluminate, or a mixture thereof, and an upper dielectric film on the lower dielectric film, the upper dielectric film comprising a Group III metal oxide, Group III metal nitride, Group XIII metal oxide or Group XIII metal nitride. A gate electrode is provided on the multilayered dielectric film.

    摘要翻译: 提供了在通道区​​域上包括多层电介质膜的晶体管。 多层电介质包括下电介质膜,该电介质膜的厚度至少为多层电介质膜的厚度的50%,并且包括金属氧化物,金属硅酸盐,铝酸盐或其混合物,以及上电介质膜 在下介电膜上,上电介质膜包含III族金属氧化物,III族金属氮化物,第ⅩⅢ族金属氧化物或第ⅩⅢ族金属氮化物。 在多层电介质膜上设置栅电极。

    SEALING COMPOSITE FOR FLAT SOLID OXIDE FUEL CELL STACK HAVING HIGH FRACTURE RESISTANCE AND THE FABRICATION METHOD THEREOF
    10.
    发明申请
    SEALING COMPOSITE FOR FLAT SOLID OXIDE FUEL CELL STACK HAVING HIGH FRACTURE RESISTANCE AND THE FABRICATION METHOD THEREOF 审中-公开
    用于具有高耐断裂性的平坦的固体氧化物燃料电池堆的密封复合材料及其制造方法

    公开(公告)号:US20100331165A1

    公开(公告)日:2010-12-30

    申请号:US12438608

    申请日:2006-12-08

    IPC分类号: C03C14/00

    摘要: A composite sealant of the present invention increases a fracture toughness of glass which has an excellent gas tightness but has a low fracture resistance, to enhance the thermal cycle stability while maintaining the gas tightness of a stack. For this, alpha-alumina fiber particles, alpha-alumina granular particles, and metallic particles are mixed and added to a glass matrix for remarkably increasing the fracture toughness from 0.5 MPa·m05 to 6 MPa·m°'5 through the multiple effects of crack deflection and crack bridging by the fiber and granular particles, and effects of crack arresting and plastic deformation by the metallic particles. When using the high fracture toughness composite sealant of the present invention, since the gas tightness and the stability of the stack can be maintained even when there is a thermal stress produced by a non-uniform temperature distribution or a thermal cycle condition in the stack, increasing the fracture toughness of the composite sealant works as the most important factor for enhancing the reliability of a large-area stack.

    摘要翻译: 本发明的复合密封剂提高了具有优异的气密性但具有低抗断裂性的玻璃的断裂韧性,以提高热循环的稳定性,同时保持了叠层的气密性。 为此,将α-氧化铝纤维颗粒,α-氧化铝颗粒和金属颗粒混合并加入到玻璃基质中,通过多种效应将断裂韧性从0.5MPa·m05显着提高到6MPa·m·5 由纤维和颗粒颗粒引起的裂纹弯曲和裂纹桥接,以及金属颗粒的裂纹阻滞和塑性变形的影响。 当使用本发明的高断裂韧性复合密封剂时,即使当堆叠中存在由不均匀的温度分布或热循环条件产生的热应力时,由于能够保持气密性和堆叠的稳定性, 提高复合密封胶的断裂韧性是提高大面积叠层可靠性的最重要因素。