Abstract: The present invention provides a preparation method of an anti-counterfeiting lyocell fiber, including the following steps: dissolving at least one amino acid metal chelate and a cellulose pulp in an aqueous solution of a cellosolve to obtain a spinning solution, and then performing wet spinning using the spinning solution to obtain an anti-counterfeiting lyocell fiber, wherein the amino acid metal chelate account for 0.2% to 0.6% of the total mass of the anti-counterfeiting lyocell fiber. The anti-counterfeiting lyocell fiber of the present invention uses an amino acid metal chelate for encryption, and the process is simple. The prepared product can be provided with one or two passwords based on the ratio of metal ions and the amino acids, so that the product prepared from this fiber has the advantages of memory tracking properties, identification function and high anti-counterfeiting capability grade.

Abstract: The invention relates to a method for preparing an anti-counterfeiting modal fiber, including: mixing a pulp stock solution with a cellulose catalyst, alkalizing, aging, sulfonating, and then dissolving the pulp stock solution in an alkaline solution to obtain a treatment solution; mixing the treatment solution with multiple amino acid-metal chelates, filtering, defoaming and ripening to obtain a spinning stock solution; and mixing the spinning stock solution with a spinning bath additive, and wet spinning, followed by drafting, defoaming, desulfurizing, water washing, and other post-treatments, to obtain an anti-counterfeiting modal fiber, wherein the amino acid metal-chelates account for 0.5%-1.5% by weight of the spinning stock solution. Amino acid-metal chelates are used to anti-counterfeit and encrypt the modal fibers, and the anti-counterfeiting and encrypting is involved in the spinning stock solution of modal fibers.

Abstract: Provided is an anti-counterfeiting composition for anti-counterfeiting fibers, including a carrier, an anti-counterfeiting tracer and a dispersant, wherein the anti-counterfeiting tracer is composed of barium oxide, strontium oxide, aluminum oxide and zinc oxide, and a barium element content, a strontium element content, an aluminum element content, and a zinc element content in the anti-counterfeiting composition is controlled to a fixed feeding mass ratio; in percent by mass, the sum of the barium element content, strontium element content, aluminum element content, and zinc content accounts for 5-50% of the anti-counterfeiting composition; the carrier is a matrix polymer or a bio-derived oil. The anti-counterfeiting composition of the present disclosure can give the anti-counterfeiting fiber advantages of memory tracking properties and identification functions, high anti-counterfeiting capability, and good anti-counterfeiting concealment.

Abstract: The present disclosure relates to a customer flow line and customer flow hot zone determining method and apparatus. The customer flow line determining method comprises: receiving coordinate data sent from multiple mobile devices, wherein an environment in which the multiple mobile devices are located is divided into a plurality of grids; on the basis of the coordinate data of each mobile device, determining the grid to which each mobile device belongs; determining the number of the mobile devices in each grid; and on the basis of the number of the mobile devices in each grid, outputting a customer flow line distribution map.

Abstract: A vascular imaging apparatus and a vascular imaging method are disclosed. The vascular imaging apparatus includes: a light source device, an image acquisition device, a projection device and an image processor. The light source device is configured to emit visible light and infrared light to a body portion to be tested in a time-sharing manner; the image acquisition device is configured to receive the visible light and the infrared light reflected by the body portion to be tested to acquire a visible image and an infrared image respectively; the image processor is configured to perform image processing on the infrared image and the visible image, to acquire a vascular enhancement image of the body portion to be tested; the projection device is configured to project the vascular enhancement image onto the body portion to be tested.

Abstract: An apparatus for fluorescence molecular tomography includes an exciting light source, a carrying stage, and a receiving apparatus. The carrying stage configured to carry an subject to be examined which receives the exciting light to excite fluorescence; the receiving apparatus comprising a fluorescence detector, an exciting light detector and a beam splitter, the beam splitter is configured to allow the fluorescence to exit in a first direction and the exciting light having passed through the subject to be examined to exit in a second direction, the fluorescence detector is positioned in the first direction to the beam splitter and configured to receive and transform the fluorescence into a first electrical signal. The exciting light detector is positioned in the second direction to the beam splitter and configured to receive and transform the exciting light having passed through the subject to be examined into a second electrical signal.

Abstract: A vascular imaging apparatus and a vascular imaging method are disclosed. The vascular imaging apparatus includes: a light source device, an image acquisition device, a projection device and an image processor. The light source device is configured to emit visible light and infrared light to a body portion to be tested in a time-sharing manner; the image acquisition device is configured to receive the visible light and the infrared light reflected by the body portion to be tested to acquire a visible image and an infrared image respectively; the image processor is configured to perform image processing on the infrared image and the visible image, to acquire a vascular enhancement image of the body portion to be tested; the projection device is configured to project the vascular enhancement image onto the body portion to be tested.

Abstract: A recommendation method, a recommendation apparatus, a recommendation device, a recommendation system and a storage medium. The recommendation method includes: acquiring user behavior information related to at least one object to be recommended; on the basis of the user behavior information, calculating a preference value of the user for the at least one object to be recommended, and constructing a preference matrix of the user for the at least one object to be recommended; on the basis of the preference matrix, acquiring a predicted preference value of the user for at least one object to be recommended of an unknown preference, and providing a recommendation parameter on the basis of the predicted preference value.

Abstract: A method for determining a blood pressure of a user includes: collecting an electrocardiography (ECG) signal and a pulse wave signal from the user; extracting characteristic parameters of the user from the ECG signal and the pulse wave signal; establishing a characteristic vector of the user based on personal information of the user and the characteristic parameters of the user; and determining the blood pressure of the user based on the characteristic vector of the user and a characteristic-vector-and-blood-pressure relational model. A blood pressure determining apparatus based on the method disclosed herein is also provided, which includes an acquisition portion, a characteristic parameter determination portion, a characteristic vector determination portion, and a blood pressure determination portion.

Abstract: An information recommendation method and device and a storage medium. The information recommendation method includes: determining a target recommendation parameter corresponding to a page identifier of a page, according to the page identifier and a correspondence between a page identifier and a recommendation parameter; determining a corresponding target recommendation strategy according to the target recommendation parameter; querying a correspondence between a recommendation strategy and a recommendation result according to the target recommendation strategy, so as to obtain at least one initial recommendation result; and fusing the at least one initial recommendation result according to a corresponding weight to obtain a target recommendation result.

Abstract: The present application discloses an apparatus for determining a blood pressure of a subject. The apparatus includes one or more sensors configured to measure a first physiological parameter of the subject; a memory; and one or more processors. The memory stores computer-executable instructions for controlling the one or more processors to decompose a first physiological signal corresponding to the first physiological parameter using an empirical mode decomposition algorithm into a sum of a plurality of intrinsic mode functions and a residual; identify one or more first intrinsic mode functions of the plurality of intrinsic mode functions that are associated with a noise signal, thereby obtaining one or more second intrinsic mode functions of the plurality of intrinsic mode functions that are different from the one or more first intrinsic mode functions; and calculate a denoised physiological signal by accumulating the one or more second intrinsic mode functions.

Abstract: The present disclosure relates to a customer flow line and customer flow hot zone determining method and apparatus. The customer flow line determining method comprises: receiving coordinate data sent from multiple mobile devices, wherein an environment in which the multiple mobile devices are located is divided into a plurality of grids; on the basis of the coordinate data of each mobile device, determining the grid to which each mobile device belongs; determining the number of the mobile devices in each grid; and on the basis of the number of the mobile devices in each grid, outputting a customer flow line distribution map.

Abstract: The present application discloses a blood pressure measurement device, includes: a blood pressure measurement body configured to measure blood pressure based on photoplethysmogram (PPG); and a calibrator configured to measure blood pressure values based on Korotkoff sounds. The calibrator is further configured to provide initial calibration parameters to the blood pressure measurement body, and the blood pressure measurement body is further configured to collect an ECG signal and a PPG signal, calibrate a PPG parameter-blood pressure equation according to the initial calibration parameters, and calculate a blood pressure value according to the PPG parameter-blood pressure equation.

Abstract: A method for determining a blood pressure of a user includes: collecting an electrocardiography (ECG) signal and a pulse wave signal from the user; extracting characteristic parameters of the user from the ECG signal and the pulse wave signal; establishing a characteristic vector of the user based on personal information of the user and the characteristic parameters of the user; and determining the blood pressure of the user based on the characteristic vector of the user and a characteristic-vector-and-blood-pressure relational model. A blood pressure determining apparatus based on the method disclosed herein is also provided, which includes an acquisition portion, a characteristic parameter determination portion, a characteristic vector determination portion, and a blood pressure determination portion.

Abstract: The present application discloses an apparatus for determining a blood pressure of a subject. The apparatus includes one or more sensors configured to measure a first physiological parameter of the subject; a memory; and one or more processors. The memory stores computer-executable instructions for controlling the one or more processors to decompose a first physiological signal corresponding to the first physiological parameter using an empirical mode decomposition algorithm into a sum of a plurality of intrinsic mode functions and a residual; identify one or more first intrinsic mode functions of the plurality of intrinsic mode functions that are associated with a noise signal, thereby obtaining one or more second intrinsic mode functions of the plurality of intrinsic mode functions that are different from the one or more first intrinsic mode functions; and calculate a denoised physiological signal by accumulating the one or more second intrinsic mode functions.

Abstract: An apparatus for fluorescence molecular tomography includes an exciting light source, a carrying stage, and a receiving apparatus. The carrying stage configured to carry an subject to be examined which receives the exciting light to excite fluorescence; the receiving apparatus comprising a fluorescence detector, an exciting light detector and a beam splitter, the beam splitter is configured to allow the fluorescence to exit in a first direction and the exciting light having passed through the subject to be examined to exit in a second direction, the fluorescence detector is positioned in the first direction to the beam splitter and configured to receive and transform the fluorescence into a first electrical signal, and the exciting light detector is positioned in the second direction to the beam splitter and configured to receive and transform the exciting light having passed through the subject to be examined into a second electrical signal.

Abstract: The present application discloses a blood pressure measurement device, includes: a blood pressure measurement body configured to measure blood pressure based on photoplethysmogram (PPG), and a calibrator configured to measure blood pressure values based on Korotkoff sounds. The calibrator is further configured to provide initial calibration parameters to the blood pressure measurement body, and the blood pressure measurement body is further configured to collect an ECG signal and a PPG signal, calibrate a PPG parameter-blood pressure equation according to the initial calibration parameters, and calculate a blood pressure value according to the PPG parameter-blood pressure equation.