In embodiments of the present disclosure, a method is provided for managing an AP position for an access point. In the method, a magnetic distribution map is obtained for an indoor area, the magnetic distribution map representing a plurality of reference magnetic values that are collected at a plurality of reference positions in the indoor area. A plurality of magnetic measurements are received, here the plurality of magnetic measurements are respectively collected at a plurality of access point (AP) positions at which a plurality of APs are deployed within the indoor area, and the plurality of AP positions are unknown. The plurality of AP positions are mapped to a portion of the plurality of reference positions based on the plurality of magnetic measurements and the plurality of reference magnetic values. The plurality of AP positions are determined based on the portion of the plurality of reference positions. Therefore. AP positions may be determined accurately and effectively in an indoor environment.

An electronic device is provided. The electronic device includes a memory and at least one processor functionally connected with the memory, wherein the at least one processor may be configured to generate a first signal by modulating a phase of a default signal using a first code corresponding to a first magnetic field generator connected with the electronic device, control the first magnetic field generator connected with the electronic device to radiate a magnetic field corresponding to the first signal, receive a signal from at least one sensor connected with the electronic device, identify a second signal corresponding to the first signal from the signal, using the first code, and determine at least one of a position or a direction of the at least one sensor based on the second signal.

An electronic device is provided. The electronic device includes a memory and at least one processor functionally connected with the memory, wherein the at least one processor may be configured to generate a first signal by modulating a phase of a default signal using a first code corresponding to a first magnetic field generator connected with the electronic device, control the first magnetic field generator connected with the electronic device to radiate a magnetic field corresponding to the first signal, receive a signal from at least one sensor connected with the electronic device, identify a second signal corresponding to the first signal from the signal, using the first code, and determine at least one of a position or a direction of the at least one sensor based on the second signal.

In a method for determining imaging parameters for a Magnetic Resonance (MR) image, a set of image sequence parameters of the imaging sequence is determined, a frequency offset of off-resonant tissue potentially present in the object under examination is determined, an allowed maximum position shift of the off-resonant tissue along a slice selection direction is determined, a rotation angle which leads to the allowed maximum shift for the off-resonant tissue is determined based on the determined set of image sequence parameters, and the determined rotation angle is provided to the MR imaging system to allow the MR imaging system to generate the MR image using the determined rotation angle in the imaging sequence.

A system and method for simulating the spatial and temporal magnetic properties of configurable nanoscale magnetic molecules is provided comprising steps for simulating molecular spintronics devices (MSD) of different shapes involving thousands of magnetic atoms and molecules, representing complex magnetic molecules as a device element in MSD to use MCSMSD, defining a wide range of magnetic molecule-magnetic electrode interactions in MSD, studying the magnetic anisotropy effect in MSD simulation, studying the effect of electrons in the magnetic electrodes and fluctuations controlling the active molecule population in MSD simulation, studying the effect of defects within insulator competing with magnetic molecules, and harnessing parallel processing capabilities in desktop computers.

A magnetic measuring device includes: a determination part configured to identify four maximum inclination points in an average value in a visual field of a light detection magnetic resonance spectrum and configured to determined a degree of decrease in relative fluorescence intensity and a microwave frequency at each of the maximum inclination points; a setting part configured to set a reference decrease degree of the relative fluorescence intensity in a predetermined area and configured to set operating point frequency initial values at four points at which the reference decrease degree is achieved, near the microwave frequencies at the respective maximum inclination points; a frequency update part configured to update operating point frequencies at the four points; and a frequency correction part configured to input the updated operating point frequencies to a microwave oscillator as corrected operating point frequencies.

A magnetic measuring device includes: a determination part configured to identify four maximum inclination points in an average value in a visual field of a light detection magnetic resonance spectrum and configured to determined a degree of decrease in relative fluorescence intensity and a microwave frequency at each of the maximum inclination points; a setting part configured to set a reference decrease degree of the relative fluorescence intensity in a predetermined area and configured to set operating point frequency initial values at four points at which the reference decrease degree is achieved, near the microwave frequencies at the respective maximum inclination points; a frequency update part configured to update operating point frequencies at the four points; and a frequency correction part configured to input the updated operating point frequencies to a microwave oscillator as corrected operating point frequencies.

Certain aspects of the present disclosure provide methods and apparatus for closed-loop control of a system using one or more electron paramagnetic resonance (EPR) sensors located on-site. With such EPR sensors, a change can be applied to the system, the EPR sensors can measure the effect(s) of the change, and then adjustments can be made in real-time. This feedback process may be repeated continuously to control the system.

Certain aspects of the present disclosure provide methods and apparatus for closed-loop control of a system using one or more electron paramagnetic resonance (EPR) sensors located on-site. With such EPR sensors, a change can be applied to the system, the EPR sensors can measure the effect(s) of the change, and then adjustments can be made in real-time. This feedback process may be repeated continuously to control the system.

A B.sub.0-mapping method determines the spatial distribution of a static magnetic field in a pre-selected imaging zone comprising computation of the spatial distribution of a static magnetic field from a spatial distribution of spin-phase accruals between magnetic resonance echo signals from the imaging zone and an estimate of the proton density distribution in the imaging zone. The invention provides the field estimate also in cavities and outside tissue. Also the field estimate of the invention suffers less from so-called phase-wraps.