On the basis of the conclusions selectively gleaned from the history of ontological thought, it was assumed that the real geometry of the space of the Universe is the geometry of topologically fixed 3-dimensional hyper sphere. It claims that the understanding of metaphysical principles of space formation is important, resulting in the simplest mathematical approach to the calculation of actual astronomical distances. The comparisons of calculated lengths of trajectories of photons with the actual intergalactic distances reported by observers for different \(z\)-values are carried out using the selected assumptions. Photon mileage \(L_f = f (L_z, R_D)\) don't equal to the astronomical distance \(L_z\) detected by \(z\) value if \(R_D\) is the discrete quantum length of one of 4 space dimensions, associated with the curvature of space as a whole. The research concludes there is a good agreement between data obtained this way for star brightness with experimental data, when we speak about the hypothesis presupposing an accelerating growth of the Universe and abnormal brightness of supernovae; besides conclusions imply that adjustments to this hypothesis forward in the search of the values of brightness attenuation undetectable by today's tools are needed, otherwise, it could be talk about a possible expansion of our Universe in our era without accelerating.
Now a day every information is stored and shared on the cloud. And so the medical record especially
Personal Health Record (PHR) is an important part of health information exchange, that is need to be
stored at cloud servers. But there are various privacy problems as personal health information could be
discovered to unauthorized people. That need guarantee of the patient control over to their own PHRs,
in this method encryption of the PHRs is done before the storage on cloud. But still issues like risks
of privacy, efficiency in key administration, flexible access and efficient user administration, have still
remained the important challenge toward achieving better, cryptography imposed data access control.
In this research development, we develop a mechanism for control of data access to PHRs stored in
cloud servers. To achieve this efficient and modular data access control for PHRs, we provide encryption
approach for the encryption to each PHR file. For this system method already tried to focus on the
multiple data ownership scheme also dividing the users into security domains that highly reduce the
key management complication for owners and users. Here the system takes patient privacy as serious
issue and guaranteed it by exploiting multi-authority Encryption. Our main aim is not only privacy
but also systems scheme try to enable modification of access policies or file attributes, and break-glass
access under emergency situations. Our proposed scheme shows Extensive analysis and experimental
results are presented for security and efficiency of PHR.
Seoul Semiconductor’s patented nPola
technology increases brightness levels 5 times
over existing LEDs. This technology took more
than 10 years to develop and is set to
revolutionise the LED lighting industry. nPola
stands for Numerous polarities and is related to
the substrate in which the LED is grown. nPola is
grown on a GaN (Gallium nitride) substrate,
whereas conventional LEDs use Sapphire or
Silicone substrate in which most of the energy is
converted to heat instead of light due to a defect
caused by lattice mismatch. nPola, however, does
not have the lattice mismatch issue like
conventional LEDs because the GaN epitaxy has
the same crystalline structure as the GaN growth
substrate. Furthermore, nPola technology
involves the utilization of the one of the nPola
non-polar planes in the GaN crystal, either the
a-plane or m-plane, whereas traditional LEDs
currently utilize the polar c-plane GaN epitaxy on
Sapphire or Silicon. nPola LEDs offer reduced
electrical resistance, increased electrical
efficiency, reduction in colour shift with varying
operating current and smaller device size.
With nPola, Seoul Semiconductor has already
improved the lumen density of LEDs by 5 times
over the conventional LEDs based on equivalent
die surface area and it expects to further improve
this margin to 10 times in future.
Baby Near is the project created to assist parents to monitor their children in open or closed environments, mainly with crowds, such as supermarkets, malls, playgrounds, among others. The prototype consists of two ends that communicate with each other by Bluetooth, one with a smartphone and another with an Arduino. If the distance between them is highier than the one set by the parents, the cellphone device emits sounds, vibrations and changes on screen that alert the parent that the distance has been exceeded. In addition, the end of the Arduino also has a short distance electronic tag that can be used by parents to insert information relevant to the child's finder. In this way, the system brings to the parents more speed in the detection of an emergency situation due to the increase of the distance of the child.
Fernanda Vitorino Vieira and Henrique Baltuilhe Rivero