Abstract: The present disclosure, in some embodiments, relates to an electronic device temperature regulating apparatus. The electronic device temperature regulating apparatus includes a first compartment arranged between a first membrane including a first material having a first insulative value and an intervening membrane opposing the first membrane. A second compartment is arranged between the intervening membrane and a second membrane including a second material having a second insulative value. The intervening membrane includes a thermal transmission region that is directly between the first compartment and the second compartment. The thermal transmission region has a third insulative value that is less than the first insulative value and the second insulative value.

Abstract: Methods and apparatus, including computer systems and program products, related to techniques for creating a chain of transfer for a digital document in which every transferor and transferee participates in the transfer. A first entity, e.g., an offeror with current control of the document, generates an offeror certificate associated with the digital document, and encrypts the offeror certificate with the offeror's private key. The offeror transmits the encrypted offeror certificate to a second entity, e.g., an offeree that will be the subsequent controller of the document. The offeree generates an offeree certificate from the offeror certificate, encrypts the offeree certificate with the offeree's private key, and transmits the encrypted offeree certificate to the offeror. When the offeror receives the offeree certificate, the offeror adds the offeree to a chain of transfer for the document and generates a transfer certificate for the offeree.