216results about How to "Free from attack" patented technology

The invention relates to the field of a recommendation system and discloses a collaborative filtering recommendation method based on emotions and trust. The collaborative filtering recommendation method comprises a step 1 of obtaining an explicit degree of satisfaction by normalizing an item scored matrix of users; calculating the similarity between scored items and items that are not scored according to a vector cosine method, obtaining an implicit degree of satisfaction by using the explicit degree of satisfaction and the similarity, and constituting an extended satisfaction matrix by the explicit degree of satisfaction and the implicit degree of satisfaction; a step 2 of calculating the score similarity and the preference similarity according to the extended satisfaction matrix, and obtaining an objective degree of trust generated by the users on the opinion similarity of the items by using the score similarity, the preference similarity and weights set by a supervised learning algorithm; and a step 3 of abstracting a user social network according to the user satisfaction interaction frequency, establishing a weighted directed graph based on the six-degree partition theory, and calculating a subjective degree of trust generated by familiarity among the users. The method of the invention realizes the collaborative filtering.

The invention belongs to the multimedia information safety field and particularly relates to an identification method of a coping digital image. The method comprises the following steps that: (1), an image classification model is established; more particularly, an image library is established and a copying image and a natural image are stored in the image library; discrete cosine transform (DCT) coefficient matrixes of all images in the image library are extracted and DCT coefficient first effective digit distribution characteristics of all the images are extracted; and a classifier is trained to obtain an image classification model; and (2), the image classification model is utilized to treat a detected image to carry out coping image identification. According to the invention, on the basis of a DCT coefficient first effective digit distribution change during a secondary image obtaining process, statistics of the DCT coefficient first effective digit distribution characteristics is carried out and the characteristics are input into the classifier to carry out study, so that the image classification model is obtained; and the classification model is utilized to analyze a digital image, so that it can be effectively identified whether the digital image is a copying image or not.

The present invention relates to an anti-debugging method employed by an anti-debugging device. The anti-debugging method includes: a child process generation step; a parent process monitoring step in which a parent process is monitored by a child process; and a child process monitoring step in which the parent process monitors the child process.

The invention refers to net access control method based on virtual LAN. The method is: configures the access authority of ports on LAN user access appliances, when a user access in LAN, user access appliance examines the authority state of application port; carries on the user LAN access control according to the authority state. The device includes: user access appliance, access control applianceand access identification server, the user accesses the net through user access appliance, and carries net access authentication through access control appliance and access authentication server.

The present invention provides vaccine compositions and methods of producing such compositions. Other embodiments of the invention include methods of treating a pathogen infection, methods of vaccinating a subject against a pathogen infection, and methods for treating an antibiotic-resistance bacterial infection in a subject in need thereof. In further embodiments, the invention includes methods of decreasing the level of a pathogen in a subject having a pathogen infection, methods of increasing the surviving rate of a subject having a pathogen infection, methods of reducing the level of painassociated with a pathogen infection, and methods of reducing the level of distress associated with a pathogen infection in a subject in need thereof. Novel scaffold compositions and opsonin-bound orlectin-bound pathogen compositions, and uses thereof, are also provided herein.

A hearing device includes: a processing unit configured to compensate for hearing loss of a user of the hearing device; and an interface; wherein the processing unit is configured to: receive a session request for a session via the interface, obtain and store a session key, encrypt the session key based on a hearing device key, send a session response comprising the encrypted session key, and receive session data in the session via the interface.

The invention provides a transdermal immunity flu polyvalent vaccine and a preparing method. The transdermal immunity flu polyvalent vaccine comprises transdermal immunity adjuvant, flu polyvalent vaccine antigen, permeation agent and medical dressing. The flu polyvalent inactivation or attenuated live vaccine is differ from prior vaccine immunity approach and adjuvant. A result through permeation purpose immunity to Balb / c mouse, ferret, monkey and human body improves that the transdermal immunity flu polyvalent vaccine can generate IgA and IgG antibody with high valency, namely, can induce immune system and mucosal immune simultaneously, also can be used for immunoprophylaxis to popular flu and highly pathogenic avian influenza.

The invention discloses a method, system and device for a user terminal to access internet and solves the problem in the prior art that the user terminal cannot safely access the internet, so that websites in the internet are attacked. The method comprises the following steps of: acquiring parameter information carried by access request information, transmitted by the user terminal and matching the acquired parameter information with keywords saved in a keyword database by a server; and when the matching is successful, prohibiting the user terminal from accessing the internet. In the embodiment of the invention, the acquired parameter information of the access request information is matched with the keywords saved in the keyword database by the server, thereby determining whether the access request information carries the attack information or not; and when the access request information carries the attack information, the user terminal is prohibited from accessing the internet, thereby ensuring the safety of the user terminal to access the internet and ensuring that the internet is prevented from being attacked.

The invention provides an SIP-protocol-based method and system for detecting communication network attack. The method comprises the following steps of binding a calling number of a user with an IP (Internet Protocol) address of the user; when an SIP call is initiated, obtaining SIP signaling from an SIP message of a control plane link layer, obtaining a calling number and an IP address from the signaling through analysis, and judging whether the calling number and the IP address have binding relationship; intercepting follow-up messages of the SIP call of the calling number if that the calling number and the IP address have binding relationship is determined and IP messages from the control plane link layer are invalid data; judging whether call time slot of the SIP signaling is greater than a predetermined call frequency if that the calling number and the IP address do not have binding relationship is determined; and controlling the call time slot of the SIP signaling through INVITE information if the call time slot of the SIP signaling is greater than the predetermined call frequency. According to the invention, without changing prior signaling and network equipment, analysis and detection are carried out on the SIP signaling and the media streams which flow through the network so as to judge whether the messages are an attack messages and whether corresponding safeguard measures need to be taken, so that the security of a core network is protected, and the attack to a network layer and an application layer is prevented.

The invention discloses a dietary supplement and a preparation method thereof. The dietary supplement comprises two varieties of plant extractives, nine varieties of vitamins and two varieties of minerals. Active components comprise by weight 12-18 parts of rhodioloside, 100-114 parts of proanthocyanidins, 0.7-0.9 part of vitamin A, 1-3 parts of vitamin B1, 1-3 parts of vitamin B2, 3-5 parts of vitamin 6, 0.004-0.006 part of vitamin B12, 80-150 parts of vitamin C, 40-60 parts of vitamin E, 0.3-0.5 part of folic acid, 12-18 parts of nicotinamide, 5-15 parts of zinc and 0.02-0.06 part of selenium. The dietary supplement of the invention has comprehensive nutrition, can enhance antioxidation capability and reduce electromagnetic radiation damage, and is suitable for daily dietary supplement of radar troops as well as population living and working for long time in environment of high electromagnetic radiation, low illumination and continuous noise.

The invention discloses a human monocolonal antibody with high neutralization activity for Zika virus and application thereof, and belongs to the technical field of medicines. Escherichia coli-expressed Zika E protein is taken as an antigen, a memory B cell capable of specifically binding the Zika E protein is screened from PBMCs of a Zika patient in convalescence through flow sorting, then the screened single B cell is subjected to RT-PCR to obtain a variable region sequence and fragment of the antibody, and the variable region sequence and fragment of the antibody are further connected to anexpression vector together with a constant region. After the expression and purification of mammalian cells, a serious of function tests including binding force with ZIKE-E protein, in-vitro neutralization effect, in-vivo protective capability and the like are carried out, and 3 strains of the human monocolonal antibody with full protection against Zika virus infection are obtained.