D-reflection human body ep

Where digital service providers a few years ago, handled users by username/password and a local user database, we have in a few years seen major changes. It is now possible to use various services for user handling, and delegation of access to data between services is now possible and is used more than ever. This trend is supported by a large amount of protocols such as OAuth and OpenID as well as several commercial solutions including Facebook Connect and in a Danish context NemID. In the future this development will be further driven by cloud computing and "the API economy" where companies are subcontractors to each other using APIs to cloud-based solutions. These changes make it important to have a technical understanding of the security and the functionality around the management of digital identities. The course work is both theoretically and practically concerning these "state of the art" technologies for managing digital identities. In addition, we take a look at some of the emerging technologies that supports security, including privacy in completely new ways. This is cryptographic technologies like anonymous credentials/attribute based credentials(eg. Microsoft U-Prove and IBM Identity Mixer). Parallel with these technical changes major legal changes are on the way, especially from the EU, where a new regulation is on its way. This Regulation will have implications for all Danish companies that manage users on the Internet, and it is therefore important as a technician to have a firm understanding of these implications, therefore, the course will also touch on these legal aspects (by using an external teacher, expert in this field).

Reflection of sound waves off of surfaces can lead to one of two phenomena - an echo or a reverberation . A reverberation often occurs in a small room with height, width, and length dimensions of approximately 17 meters or less. Why the magical 17 meters? The effect of a particular sound wave upon the brain endures for more than a tiny fraction of a second; the human brain keeps a sound in memory for up to seconds. If a reflected sound wave reaches the ear within seconds of the initial sound, then it seems to the person that the sound is prolonged . The reception of multiple reflections off of walls and ceilings within seconds of each other causes reverberations - the prolonging of a sound. Since sound waves travel at about 340 m/s at room temperature, it will take approximately s for a sound to travel the length of a 17 meter room and back, thus causing a reverberation ( recall from Lesson 2 , t = d/v = (34 m)/(340 m/s) = s). This is why reverberations are common in rooms with dimensions of approximately 17 meters or less. Perhaps you have observed reverberations when talking in an empty room, when honking the horn while driving through a highway tunnel or underpass, or when singing in the shower. In auditoriums and concert halls, reverberations occasionally occur and lead to the displeasing garbling of a sound.

D-Reflection Human Body EPD-Reflection Human Body EP