Abstract: The present disclosure belongs to the field of functional fiber materials, and discloses a non-metallic temperature-responsive composite for magnetic resonance imaging (MRI), and a preparation method and use thereof. An organic hydrogen-containing molecular contrast agent is loaded into a polymer fiber through electrospinning, and the phase structure and molecular motility of the organic hydrogen-containing molecular contrast agent are controlled to regulate its relaxation time. The non-metallic temperature-responsive composite can achieve an “on/off” temperature-responsive MRI effect for a polymer material without the addition of an additional magnetic field. Compared with the prior art, an additional magnetic field is not required; the selected contrast agent is non-toxic or exhibits low toxicity to the human body; and an “on/off” imaging effect can be realized, where the advantages of nuclear magnetic resonance (NMR) signals of the material itself will not be affected when imaging is not conducted.

Abstract: Embodiments of the present disclosure provide a method and a device for cooperative control of multiple trains. The method includes: S1, establishing a train dynamic model of urban rail transit; S2, modeling a train control system of urban rail transit based on train-to-train communication; S3, constructing, according to the dynamic model and a control system model, an optimized control target which comprehensively considers distance convergence and speed convergence of train formation; and S4, cooperatively controlling, on the basis of an artificial potential field method and Kalman filtering and according to the optimized control target, the multiple trains. The present disclosure is capable of effectively shortening a train headway.

Abstract: Provided are an organic light-emitting diode (OLED) lamp panel and a lighting device. A display region of the lamp panel includes at least one main display region and a display peripheral region. The main display region is regular in shape and is formed by splicing multiple main light-emitting units of the same shape. The display peripheral region consists of a peripheral region I and/or a peripheral region II. The peripheral region I is formed by multiple first peripheral light-emitting units with regular shapes. The display region of the OLED lamp panel is designed to include at least one main display region and a display peripheral region.

Abstract: The present disclosure provides systems and methods for controlling an X-ray imaging device. The method may include causing an X-ray source to emit X-rays to irradiate a subject. The method may also include generating an X-ray image of the subject. The X-ray image may be generated using a detector that is arranged to face the X-ray source to detect a portion of the X-rays that pass through the subject. And the method may further include causing to project, using an optical projection device, the X-ray image of the subject on a surface of the subject.

Abstract: Apparatuses and techniques are described for obtaining a threshold voltage distribution for a set of memory cells based on a user read mode. The user read mode can be based on various factors including a coding of a page and an increasing or decreasing order of the read voltages. The read process for the Vth distribution is made to mimic the read mode which is used when the memory device is in the hands of the end user. This results in a Vth distribution which reflects the user's experience to facilitate troubleshooting. In some cases, one or more dummy read operations are performed, where the read result is discarded, prior to a read operation which is used to build the Vth distribution.

Abstract: The present disclosure provides systems and methods for automated scan preparation and real-time monitoring/adjustment in medical imaging. The automated scan preparation may include positioning a target subject to be scanned by a medical imaging device, determining a rotation scheme of the medical imaging device, targeting a scan region of the target subject with an imaging isocenter of the medical imaging device, determining target position(s) of component(s) of the medical imaging device, performing a virtual scan, generating a reference subject model representing an internal structure of the target subject, or the like. The real-time monitoring/adjustment operations may include achieving automatic brightness stabilization, monitoring a posture of the target subject, adjusting the position of component(s) of the medical imaging device, estimating a dose distribution, monitoring a treatment of the target subject, performing a motion correction, or the like.

Abstract: Apparatuses and techniques are described for obtaining a threshold voltage distribution for a set of memory cells based on a user read mode. The user read mode can be based on various factors including a coding of a page and an increasing or decreasing order of the read voltages. The read process for the Vth distribution is made to mimic the read mode which is used when the memory device is in the hands of the end user. This results in a Vth distribution which reflects the user's experience to facilitate troubleshooting. In some cases, one or more dummy read operations are performed, where the read result is discarded, prior to a read operation which is used to build the Vth distribution.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain an origin related to an X-ray scanner; determine a coordinate system based on the origin; determine coordinates of a second location of the X-ray scanner based on the origin and the coordinate system; obtain coordinates of a first location based on the origin and the coordinate system; and determine, based on the origin and the coordinates of the second location, positioning information of the X-ray scanner configured to cause the X-ray scanner to be positioned at the first location from the second location of the X-ray scanner.

Abstract: The present invention belongs to the field of functional fibrous materials, and discloses a magnetic fibrous material and a preparation method and application thereof. A polymer and a magnetic load raw material are dissolved in a solvent to obtain a uniform spinning solution; a solute component that reacts with the magnetic load raw material is added into a coagulation bath solvent to obtain a reactive coagulation bath solution; the spinning solution is electrospun, and the produced fiber is collected with the reactive coagulation bath solution, so that the magnetic load raw material in the fiber reacts in situ with the solute in the reactive coagulation bath solution to obtain the magnetic fibrous material.

Abstract: Apparatuses and techniques for detecting short circuits in a memory device, and in particular, word line-to-channel short circuits and short circuits between bit line contacts at the top of NAND strings. A short circuit detection operation includes a channel pre-clean phase which discharges a channel of a non-short circuited NAND string while boosting a bit line of a short circuited NAND string, followed by a bit line pre-charge phase which boosts a bit line of the non-short circuited NAND string, followed by a bit line discharge phase which discharges the bit line of the non-short circuited NAND string, followed by a sensing phase which identifies the short circuited NAND strings as being in a programmed or non-conductive state.

Abstract: A highly stable organic light-emitting panel includes a substrate and a plurality of pixelated OLED circuit assemblies. The substrate further includes an auxiliary electrode and a plurality of circuit protection structures, each of which is electrically connected to a corresponding pixelated first electrode in each pixelated OLED circuit assembly. The plurality of circuit protection structures are respectively connected to the auxiliary electrode. An insulator covers the auxiliary electrode, the plurality of circuit protection structures, and an area between the plurality of circuit protection structures and the plurality of OLED circuit assemblies.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain an origin related to an X-ray scanner; determine a coordinate system based on the origin; determine coordinates of a second location of the X-ray scanner based on the origin and the coordinate system; obtain coordinates of a first location based on the origin and the coordinate system; and determine, based on the origin and the coordinates of the second location, positioning information of the X-ray scanner configured to cause the X-ray scanner to be positioned at the first location from the second location of the X-ray scanner.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain an origin related to an X-ray scanner; determine a coordinate system based on the origin; determine coordinates of a second location of the X-ray scanner based on the origin and the coordinate system; obtain coordinates of a first location based on the origin and the coordinate system; and determine, based on the origin and the coordinates of the second location, positioning information of the X-ray scanner configured to cause the X-ray scanner to be positioned at the first location from the second location of the X-ray scanner.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain one or more images relating to the target in the object; determine one or more image target locations corresponding to the target based on the one or more images; determine a target position of the target based on the one or more image target locations corresponding to the target; and determine positioning information of an indicator or an X-ray source of the X-ray scanner based on the target position.

Abstract: The present disclosure provides systems and methods for controlling an X-ray imaging device. The method may include causing an X-ray source to emit X-rays to irradiate a subject. The method may also include generating an X-ray image of the subject. The X-ray image may be generated using a detector that is arranged to face the X-ray source to detect a portion of the X-rays that pass through the subject. And the method may further include causing to project, using an optical projection device, the X-ray image of the subject on a surface of the subject.

Abstract: A highly stable organic light-emitting panel includes a substrate and a plurality of pixelated OLED circuit assemblies. The substrate further includes an auxiliary electrode and a plurality of circuit protection structures, each of which is electrically connected to a corresponding pixelated first electrode in each pixelated OLED circuit assembly. The plurality of circuit protection structures are respectively connected to the auxiliary electrode. An insulator covers the auxiliary electrode, the plurality of circuit protection structures, and an area between the plurality of circuit protection structures and the plurality of OLED circuit assemblies.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain one or more images relating to the target in the object; determine one or more image target locations corresponding to the target based on the one or more images; determine a target position of the target based on the one or more image target locations corresponding to the target; and determine positioning information of an indicator or an X-ray source of the X-ray scanner based on the target position.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain an origin related to an X-ray scanner; determine a coordinate system based on the origin; determine coordinates of a second location of the X-ray scanner based on the origin and the coordinate system; obtain coordinates of a first location based on the origin and the coordinate system; and determine, based on the origin and the coordinates of the second location, positioning information of the X-ray scanner configured to cause the X-ray scanner to be positioned at the first location from the second location of the X-ray scanner.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain one or more images relating to the target in the object; determine one or more image target locations corresponding to the target based on the one or more images; determine a target position of the target based on the one or more image target locations corresponding to the target; and determine positioning information of an indicator or an X-ray source of the X-ray scanner based on the target position.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain one or more images relating to the target in the object; determine one or more image target locations corresponding to the target based on the one or more images; determine a target position of the target based on the one or more image target locations corresponding to the target; and determine positioning information of an indicator or an X-ray source of the X-ray scanner based on the target position.