Abstract: Systems and methods of recommending content items are disclosed. User characteristics of a user are determined based on user engagement with one or more content items. A user model configured to predict a knowledge level of the user is generated, the user model including a set of nodes based on the user characteristics. The user model is applied to predict the knowledge level, and a recommendation is generated of at least a portion of a content item (e.g., a segment of audio/video media) based, at least in part, on the predicted knowledge level.

Abstract: An example method disclosed herein includes receiving a request for content items relevant to a concept within a first knowledge space, where the first knowledge space includes a plurality of concept groupings of a plurality of nodes representing a plurality of content items. The method further includes identifying a plurality of content items in a second knowledge space relevant to the concept and receiving a selection of one or more of the content items for addition to the first knowledge space. The method further includes adding the selected content items to the first knowledge space.

Abstract: An example method disclosed herein includes receiving a request for content items relevant to a concept within a first knowledge space, where the first knowledge space includes a plurality of concept groupings of a plurality of nodes representing a plurality of content items. The method further includes identifying a plurality of content items in a second knowledge space relevant to the concept and receiving a selection of one or more of the content items for addition to the first knowledge space. The method further includes adding the selected content items to the first knowledge space.

Abstract: A method comprises storing first transaction data for a first transaction producing a first version of a first dataset, second transaction data for a second transaction transforming a first version of the first dataset to a second version of the first dataset, and third transaction data for a third transaction transforming the second version of the first dataset to a third version of the first dataset; storing dependency information indicating a first dependency of the third transaction on the second transaction and a second dependency of the second transaction on the first transaction; receiving a first instruction to revoke a first permission of a first user to access the second version of the first dataset; automatically revoking a certain permission of the first user to access the third version of the first dataset based on the dependency information.

Abstract: A method of identifying one or more concepts in a multimedia file includes separating text derived from the multimedia file into sub-portions, extracting features from the text of the sub-portions, and identifying concept clusters for the sub-portions based on the extracted features. The method further includes associating each of the sub-portions with the one or more concepts presented in the sub-portions of text based on the identified concept clusters and presenting, via a user interface, one or more portions of the multimedia file, where the portions of the multimedia file are generated based on the one or more concepts presented in each of the sub-portions of text of the multimedia file.

Abstract: There is provided a learning management system comprising: a display; and a processing element in electronic communication with the display, the processing element configured to perform the following operations: generate a plurality of nodes, wherein the nodes correspond to an item of content; implement a testing module that selects a first node of the plurality of nodes to display on the display, wherein the first node outputs to the display one or more questions to a user and prompts the user to select an answer; and implement a confidence metric that prompts the user to select a value corresponding with the user's confidence that the selected answer is correct, wherein the selected answer and the confidence metric value for the first node are used to determine a second node from a plurality of nodes to display to the user next.

Abstract: A strap and garments including said strap, said strap including a first layer including an elastic material, a second layer including a fabric material and having a first portion and a second portion, the second layer attached to the first layer, and a reversibly attachable fastening element attached to the first portion of the second layer, where the fastening element is configured to attach to the second portion of the second layer when the strap is folded onto itself and the fastening element is brought into contact with the second portion of the second layer.

Abstract: A learning system capable of adaptively presenting various learning materials of various concepts to a user may include a concept tracker to analyze the learning materials and track one or more concepts from each of content items in the learning materials. A content item may be a video, and the system may analyze the transcripts of the video to determine one or more concepts about the video. The learning system may recommend a concept for the user to learn or improve based on the user's understanding and knowledge level around relevant concepts. Further, the system may present learning materials about the recommended concept to the user by indexing video segments by the time stamps associated with the particular concept and replay the video segments from the respective starting position and the ending position without replaying the entire video contents. Various clustering methods may be used to track the concepts.

Abstract: An underwire for use in a brassiere, and the associated brassiere, the underwire including a generally arcuate base member having a first end, a central segment, and a second end, and a spiral boning member fixedly attached to the base member, where the spiral boning member has a greater flexibility than a flexibility of the base member.

Abstract: A strap and garments including said strap, said strap including a first layer including an elastic material, a second layer including a fabric material and having a first portion and a second portion, the second layer attached to the first layer, and a reversibly attachable fastening element attached to the first portion of the second layer, where the fastening element is configured to attach to the second portion of the second layer when the strap is folded onto itself and the fastening element is brought into contact with the second portion of the second layer.

Abstract: An underwire for use in a brassiere, and the associated brassiere, the underwire including a generally arcuate base member having a first end, a central segment, and a second end, and a spiral boning member fixedly attached to the base member, where the spiral boning member has a greater flexibility than a flexibility of the base member.

Abstract: An underwire for use in a brassiere, and the associated brassiere, the underwire including a generally arcuate base member having a first end, a central segment, and a second end, and a spiral boning member fixedly attached to the base member, where the spiral boning member has a greater flexibility than a flexibility of the base member.

Abstract: An underwire for use in a brassiere, as well as the associated brassiere, including a generally arcuate base member having a length, a central portion, and opposed first and second end portions, and at least one support member having a length shorter than the length of the base member, the support member fixedly attached to the base member along the central portion of the base member and spaced from the opposed first and second end portions, where the opposed first and second end portions of the base member have a greater flexibility than a flexibility of the central portion of the base member having the at least one support member fixedly attached thereto.

Abstract: A closure includes a male closure member including a first loop, an arm, a bar, and a first loop extension extending orthogonally from the first loop, and a female closure member including a base portion having a top edge, a bottom edge, a blind hole into which the bar of the male closure member is insertable, a resilient protrusion disposed in and extending from the base portion at a position proximal to the bottom edge and configured to removably secure the first loop extension upon insertion and rotation of the bar in the blind hole, and a recess configured to receive the arm of the male closure member.

Abstract: A label attachable to a fabric includes a plate member having a shape, a first end and a second end, the plate member having a plurality of holes therethrough disposed between the first end and the second end, the plate member having a pivot hole therethrough adjacent to the first end, and the plate member having a notch disposed adjacent to the second end; and a cover member having substantially the same shape as the plate member, a top surface, a bottom surface, a first end and a second end, the cover member having a pivot pin integrally formed therewith and projecting from the bottom surface adjacent to the first end, the pivot pin rotatably attached to the plate member through the pivot hole of the plate member, and the cover member having a protrusion configured to engage the notch of the plate member projecting from the bottom surface and disposed adjacent to the second end; wherein the cover member is pivotable with respect to the plate member and is substantially alignable with the plate member such t

Abstract: An adjustable buckle for a strap includes a slider, a nylon coating disposed on the slider, and an anti-slip coating such as rubber disposed on the nylon coating. The slider is configured to be attached to a strap.

Abstract: An apparatus for securing a lace onto footwear includes a base portion having a top surface, first and second ends, and first and second sides, a hook portion extending from the top surface of the base portion adjacent to the first end of the base portion and overlying the top surface of the base portion, and side walls extending upwardly from the top surface of the base portion adjacent to the first and second sides of the base portion, the top surface of the base portion, the hook portion and the side walls forming a channel into which the lace can be inserted and securely held.

Abstract: A closure includes a male closure member including a first loop, an arm fixedly attached to the loop, and a bar fixedly attached to the arm, the bar having an upper portion extending orthogonally from the arm in a first direction and a lower portion extending orthogonally from the arm in a second direction opposite the first direction, the bar, the arm and the first loop lying substantially in a plane, and a female closure member including a second loop and a base portion fixedly attached to the second loop, the base portion having a top edge and a bottom edge and a trough extending from the bottom edge to the top edge into which the bar of the male closure member is insertable at the bottom edge and moveable along and configured for rotational pivoting of the bar in the trough, the base portion including a trough housing for receiving the upper portion of the bar inserted in the trough, the base portion having a recess configured to receive the arm attached to the bar inserted in the trough and positioned su