Abstract: The present invention relates to substitute guinea pig rat models for craniotomy training. In this scenario, the present invention provides a rat model for training in medical craniotomy techniques comprising a body (2) with four legs (21) and a tail (22), and a head (1), similar to those of a rat, wherein the body (2) and the head (1) are attachable (3), and wherein the head (1) comprises a rigid skull. (1), similar to those of a rat, wherein the body (2) and the head (1) are attachable (3), and wherein the head (1) comprises a rigid skull.

Abstract: Pre-authentication information of devices is used to securely authenticate arbitrary peer-to-peer ad-hoc interactions. In one embodiment, public key cryptography is used in the main wireless link with location-limited channels being initially used to pre-authenticate devices. Use of public keys in the pre-authentication data allows for the broadening of types of media suitable for use as location-limited channels to include, for example, audio and infrared. Also, it allows a range of key exchange protocols which can be authenticated in this manner to include most public-key-based protocols. As a result, a large range of devices, protocols can be used in various applications. Further, an eavesdropper is forced to mount an active attack on the location-limited channel itself in order to access an ad-hoc exchange. However, this results in the discovery of the eavesdropper.

Abstract: Systems and methods for searching for objects located in a virtual world include having a virtual construct such as a bot crawl the virtual world by moving from place to place. Object information is collected about the objects associated with the place and the object information is stored in a searchable database. Users can search the database for objects in the virtual world. The information can be further filtered or classified to aid in searching.

Abstract: Systems and methods for searching for objects located in a virtual world include having a virtual construct such as a bot crawl the virtual world by moving from place to place. Object information is collected about the objects associated with the place and the object information is stored in a searchable database. Users can search the database for objects in the virtual world. The information can be further filtered or classified to aid in searching.

Abstract: Systems and methods for searching for objects located in a virtual world include having a virtual construct such as a bot crawl the virtual world by moving from place to place. Object information is collected about the objects associated with the place and the object information is stored in a searchable database. Users can search the database for objects in the virtual world. The information can be further filtered or classified to aid in searching.

Abstract: Pre-authentication information of devices is used to securely authenticate arbitrary peer-to-peer ad-hoc interactions. In one embodiment, public key cryptography is used in the main wireless link with location-limited channels being initially used to pre-authenticate devices. Use of public keys in the pre-authentication data allows for the broadening of types of media suitable for use as location-limited channels to include, for example, audio and infrared. Also, it allows a range of key exchange protocols which can be authenticated in this manner to include most public-key-based protocols. As a result, a large range of devices, protocols can be used in various applications. Further, an eavesdropper is forced to mount an active attack on the location-limited channel itself in order to access an ad-hoc exchange. However, this results in the discovery of the eavesdropper.

Abstract: Pre-authentication information of devices is used to securely authenticate arbitrary peer-to-peer ad-hoc interactions. In one embodiment, public key cryptography is used in the main wireless link with location-limited channels being initially used to pre-authenticate devices. Use of public keys in the pre-authenticate data allows for the broadening of types of media suitable for use as location-limited channels to include, for example, audio and infrared. Also, it allows a range of key exchange protocols which can be authenticated in this manner to include most public-key-protocols. As a result, a large range of devices, protocols can be used in various applications. Further, an eavesdropper is forced to mount an active attack on the location-limited channel itself in order to access an ad-hoc exchange. However, this results in the discovery of the eavesdropper.