Abstract: A method for optimizing a Polar-RNNA quantizer of MLC NAND flash based on deep learning comprises the following steps: Step S1: transforming an MLC flash detection task into a deep learning task, and obtaining three hard-decision read thresholds based on a neural network; Step S2: expanding six soft-decision read thresholds based on the three hard-decision read thresholds; Step S3: constructing an LLR mapping table, and obtaining new LLR information of MLC flash based on the LLR mapping table; Step S4: symmetrizing an MLC flash channel, and performing density evolution; and Step S5: optimizing the soft-decision read thresholds based on a genetic algorithm to obtain an optimal quantization interval. According to the invention, polar codes can be directly used for MLC flash channels without the arduous work of MLC flash channel modeling, so that the reliability of MLC flash is effectively improved.

Abstract: A method for optimizing a Polar-RNNA quantizer of MLC NAND flash based on deep learning comprises the following steps: Step S1: transforming an MLC flash detection task into a deep learning task, and obtaining three hard-decision read thresholds based on a neural network; Step S2: expanding six soft-decision read thresholds based on the three hard-decision read thresholds; Step S3: constructing an LLR mapping table, and obtaining new LLR information of MLC flash based on the LLR mapping table; Step S4: symmetrizing an MLC flash channel, and performing density evolution; and Step S5: optimizing the soft-decision read thresholds based on a genetic algorithm to obtain an optimal quantization interval. According to the invention, polar codes can be directly used for MLC flash channels without the arduous work of MLC flash channel modeling, so that the reliability of MLC flash is effectively improved.

Abstract: The invention relates to the field of sanitary products, in particular to a mask capable of preventing spectacles against mist. The mask comprises a mask body having an external surface and an internal surface, and a sponge strip fixedly connected to an upper part of the internal surface of the mask body. The side, away from the mask body, of the sponge strip is concave-convex to fit the nose bridge. The invention has the following beneficial effects: the sponge strip can well fit the nose bridge of the face of a wearer in shape, the sponge strip is compressible, the sponge strip will be squeezed by the mask body and the face of the wearer to deform to perfectly fit the face of different wearers; and the sponge is soft, so that the wear comfort of the mask can be improved.

Abstract: The present invention discloses a cross-linked nanoporous saccharide-based material comprising saccharides as building blocks, also referred as nanoporous Nanosponge materials. The reaction of saccharides with cross-linkers at different saccharides to cross-linker ratios in one-pot shall allow formation of nanoporous Nanosponge material. This method further allows introduction of new functional groups on this material by the use of suitable cross-linkers and surface grafting agents, and these functional groups shall be able to provide different interaction forces with water, volatile organic vapors (VOCs) and metal ions. Along with larger inner surface area owing to the presence of nanopores or nanocavities in comparison to porous materials, saccharide-based nanoporous Nanosponge materials shall find broad applications in thermal insulation, water retention, hydrophobic finishes, odor removal properties, and metal ions exchange or absorption from water or soil.

Abstract: A user may have real-time control over whether accessing a network service account implements two-factor authentication. When a username and password is provided to log into the network service account, a determination may be made about whether the login attempt is a potential security threat. When the login attempt does not appear to be a threat, the login attempt may be processed based on the username and password. When the login attempt is a potential security threat, the actual user corresponding to the network service account may be notified and asked to confirm whether the login attempt is a security threat. When the user confirms that the login attempt is not a security threat, the user may be logged in based on the username and password. When the user confirms that the login attempt is a security threat, two-factor authentication may be implemented for accessing the network service account.

Abstract: A device may be configured to receive a message from a user device; and determine whether the message includes a parameter. When the message does not include the loop indicator parameter, the device may add the loop indicator parameter to the message to generate a first modified message, and output the first modified message toward an intended recipient of the message. When the message includes the loop indicator parameter, the device may determine whether a value of the loop indicator parameter exceeds a threshold value. When the value of the loop indicator parameter does not exceed the threshold value, the device may discard the message. When the value of the loop indicator parameter exceeds the threshold value, the device may modify the value of the loop indicator parameter value to generate a second modified message, and output the second modified message toward the intended recipient of the message.

Abstract: A server device may receive file data from a user device via a web browser application associated with the user device. The file data may be extracted by an application, different from the web browser application, associated with the user device. The server device may determine an acquisition technique based on the file data; obtain a computer file, associated with the file data, using the acquisition technique; receive, from the user device, a request to transmit a message including the computer file; insert the computer file in the message; and transmit the message.

Abstract: An approach for providing an always-on-top user interface for a mobile application is described. An always-on-top module may provide an always-on-top user interface mode for a mobile application, wherein the always-on-top user interface mode presents at least one session of the mobile application in a user interface element that is always visible in a display of a mobile device. The always-one-top module may also receive an input for activating the always-on-top user interface mode for the mobile application. Further, the always-one-top module may render the user interface element for presenting the at least one session in the display of the mobile device.

Abstract: A user may have real-time control over whether accessing a network service account implements two-factor authentication. When a username and password is provided to log into the network service account, a determination may be made about whether the login attempt is a potential security threat. When the login attempt does not appear to be a threat, the login attempt may be processed based on the username and password. When the login attempt is a potential security threat, the actual user corresponding to the network service account may be notified and asked to confirm whether the login attempt is a security threat. When the user confirms that the login attempt is not a security threat, the user may be logged in based on the username and password. When the user confirms that the login attempt is a security threat, two-factor authentication may be implemented for accessing the network service account.

Abstract: A device may receive a text message or a multimedia message to be received by a receiving device. The message may be stored by one or more storage devices. The device may determine that the message is to be received by the receiving device via a wireless local area network (WLAN). The device may send, to the receiving device, a notification associated with the message. The device may identify a storage device, of the one or more storage devices, to provide the message to the receiving device. The device may manage a synchronization between the receiving device and the storage device via the WLAN. The synchronization may cause the message to be received by the receiving device. The device may receive an indication that the receiving device has received the message, and may provide closure information. The closure information may prevent the message from being delivered via a cellular network.

Abstract: Systems and methods for message timestamp re-alignment for message thread consistency across multiple devices are disclosed. In some implementations, an outbound message originating at a mobile phone is received at an integrated messaging server. The outbound message is associated with a messaging protocol. A timestamp representing a send time for the outbound message associated with the messaging protocol at the mobile phone is determined, at the integrated messaging server, by receiving an indication of the send time from the mobile phone. The outbound message and the timestamp are stored at the integrated messaging server. The outbound message and the timestamp representing the send time for the outbound message are provided from the integrated messaging server to a client computing device different from the mobile phone.

Abstract: An approach is provided for messaging gateway services. It is determined whether a user profile specifies opting to receive content. The content is selectively forwarded, according to a multimedia protocol, to a device of a user as a multimedia messaging service (MMS) message or a short messaging service (SMS) message based on the determination, wherein the multimedia protocol supports both MMS messaging and SMS messaging.

Abstract: A user device may be configured to generate a multipart message (e.g., a multimedia messaging service (“MMS”) message). A message part of the multipart message may include conversation metadata that includes information regarding a messaging conversation between the user device and at least one other user device. The message part may include a multipart type indicator (e.g., a Multipurpose Internet Mail Extensions (“MIME”) type indicator) that indicates that a type of the at least one part is a type associated with conversation metadata. The user device may output the multipart message to the other user device.

Abstract: A device may receive, from a first user device, a request to transmit a message to a user of a second user device. The request may include particular information indicating that content of the message is to be displayed to the user for a particular amount of time. The device may encrypt, based on receiving the request and using a key, the content of the message to obtain an encrypted message. The device may transmit the encrypted message to the second user device and receive, from the second user device, a request for the key. The device may transmit, to the second user device, the key and information identifying the particular amount of time to cause the second user device to decrypt the encrypted message, using the key, to obtain a decrypted message and cause the second user device to delete the decrypted message after the particular amount of time.

Abstract: A messaging device receives configuration information from a configuration device. The messaging device identifies application configuration information, associated with a first user device, based on the configuration information and sends the application configuration information to the first user device for configuring a messaging application on the first user device. The messaging device receives an incoming message, including message information, from the messaging application on the first user device. The messaging device identifies, based on the message information and the configuration information, a second user device and a message format associated with the second user device. The messaging device sends, in the message format associated with the second user device, an outgoing message, based on the message information and the configuration information, to the second user device.

Abstract: A message server may establish an internet message access protocol (“IMAP”) IDLE session with a first client device. The IMAP IDLE session may be used to transmit one or more notifications to the first client device. The message server may determine a status notification associated with a second client device. The status notification may include information associated with an action being performed using the second client device. The message server may determine that the first client device is an intended recipient of the status notification. The message server may transmit the status notification, toward the first client device, via the IMAP IDLE session, based on determining that the first client device is the intended recipient of the status notification.

Abstract: A device may obtain receipt data associated with a purchase of an item. The device may generate information for generating a virtual receipt based on the receipt data. The device may determine a user device associated with the receipt data. The device may send a text message, that includes the information for generating the virtual receipt, to the user device. The virtual receipt may be generated by the user device based on the information for generating the virtual receipt.

Abstract: A messaging device receives configuration information from a configuration device. The messaging device identifies application configuration information, associated with a first user device, based on the configuration information and sends the application configuration information to the first user device for configuring a messaging application on the first user device. The messaging device receives an incoming message, including message information, from the messaging application on the first user device. The messaging device identifies, based on the message information and the configuration information, a second user device and a message format associated with the second user device. The messaging device sends, in the message format associated with the second user device, an outgoing message, based on the message information and the configuration information, to the second user device.

Abstract: A device may obtain receipt data associated with a purchase of an item. The device may generate information for generating a virtual receipt based on the receipt data. The device may determine a user device associated with the receipt data. The device may send a text message, that includes the information for generating the virtual receipt, to the user device. The virtual receipt may be generated by the user device based on the information for generating the virtual receipt.

Abstract: A device may receive, from a first user device, a request to transmit a message to a user of a second user device. The request may include particular information indicating that content of the message is to be displayed to the user for a particular amount of time. The device may encrypt, based on receiving the request and using a key, the content of the message to obtain an encrypted message. The device may transmit the encrypted message to the second user device and receive, from the second user device, a request for the key. The device may transmit, to the second user device, the key and information identifying the particular amount of time to cause the second user device to decrypt the encrypted message, using the key, to obtain a decrypted message and cause the second user device to delete the decrypted message after the particular amount of time.