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98 results about "Stress index" patented technology
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Advanced prism assemblies and prism assemblies using cholesteric reflectors
A prism assembly using only cholesteric layers for splitting input light into component light beams and individually directing the component light beams to modulating devices. Liquid coupling prism assembly components to produce reduced stress index and pathlength matched prism assemblies from low tolerance components. Pathlength matching in beam splitting devices using a variety of optical component shapes and beam splitting layer materials. Various prism assembly designs using cholesteric layers supported on planar and / or on optical component diagonals.
Owner:LIGHTMASTER SYST
Method and breathing apparatus for assessing pulmonary stress
InactiveUS7322937B2RespiratorsOperating means/releasing devices for valvesCvd riskIntensive care medicine
In a method and breathing apparatus for assessing pulmonary stress, wherein pressure controlled flow of respiratory gas is generated, an ensuing flow is measured, resistance and compliance are determined based on measured pressure and flow and a stress index value is determined based on pressure, flow, resistance and compliance. The stress index value is 1 when no stress is present, ≧1 when there is a risk for overdistension and ≦1 when alveolar units are at a risk of being cyclically closed and opened. Implemented in a breathing apparatus the method can be used to assist an operator in diagnostic and therapeutic considerations in relation to a patient.
Owner:MAQUET CRITICAL CARE
System and kit for stress and relaxation management
InactiveUS20100324427A1Reduce system costEconomic benefitElectrocardiographyCatheterRR intervalStress level
This invention relates to a system and a kit for stress and relaxation management. A cardiac activity sensor (101) is used for measuring the heart rate variability (HRV) signal of the user and a respiration sensor (102) for measuring the respiratory signal of the user. The system contains a user interaction device (103) having an input unit (104) for receiving user specific data and an output unit for providing information output to the user. A processor (106) is used to assess the stress level of the user by determining a user related stress index. The processor is also used to monitor the user during a relaxation exercise by means of determining a relaxation index based on the measured HRV and respiratory signals, the relaxation index being continuously adapted to the incoming measured signals and based thereon the processor instructs the output unit to provide the user with biofeedback and support messages. Finally, the processor uses the user specific data as an input in generating a first set of rules defining an improvement plan for self-management of stress and relaxation. The first set of rules is adapted to trigger commands instructing the output unit to provide the user with motivation related messages. Also, at least a portion of said user specific data is further used to define a second set of rules indicating the user's personal goals.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Water-soluble film having improved dissolution and stress properties, and packets made therefrom
Owner:PROCTER & GAMBLE CO
Film-type biomedical signal measuring apparatus, blood pressure measuring apparatus using the same, cardiopulmonary fitness estimating apparatus, and personal authentication apparatus
ActiveUS20160051156A1Easily attached to skin of human bodyEnhance usability convenienceElectrocardiographyPerson identificationHuman bodyHealth index
Provided is a film-type biomedical signal measuring apparatus configured in a such a way that a plurality of metallic thin film electrodes and a circuit unit are formed on a film-type piezoelectric element so as to easily attach the apparatus to the skin and an electrical signal as well as an electrical signal of a human body is simultaneously measured using the plurality of metallic thin film electrodes and the circuit unit. Accordingly, the film-type biomedical signal measuring apparatus simultaneously measures electrocardiogram (ECG) and ballistocardiogram (BCG) from the simultaneously measured electrical signal and vibration signal of the human body and extracts biomedical information of various types of health indexes such as a heart rate, a stress index, BCG, a blood pressure, an amount of physical activity, a respiration rate, and VO2max from the two different biomedical signals.
Owner:SEOUL NAT UNIV R&DB FOUND
Detecting, assessing and managing extreme epileptic events
Methods and apparatus for identifying an extreme epileptic state / event in a patient are provided. One method includes determining at least one of an autonomic index, a neurologic index, a metabolic index, an endocrine index, or a tissue stress index, where at least one determined index is based upon body data. The method also includes identifying a seizure event based upon the at least one determined index and determining at least one seizure severity index (SSI) value indicative of the severity of the seizure event. The method further includes comparing the determined at least one SSI value to at least one reference value and identifying an occurrence of an extreme seizure event, based upon the comparison of the determined SSI value to the at least one reference value. A non-transitory, computer readable program storage device is also provided. Another method for identifying an extreme seizure event in a patient includes determining at least one of an autonomic index, a neurologic index, a metabolic index, an endocrine index, or a tissue stress index, the indices being based upon body data. The method also includes identifying at least two seizure events based upon the at least one determined index and determining at least one seizure severity index (SSI) value related to at least one of the at least two seizure events. The method further calls for determining at least one inter-seizure interval (ISI) value related to the at least two seizure events and identifying an occurrence of a state of status epilepticus in the patient, based upon the determined SSI value and the determined ISI value.
Owner:FLINT HILLS SCI L L C
Method of testing room temperature press-in creeping performance of metal film
InactiveCN1793824AMeasuring Mechanical PropertiesNon-destructiveInvestigating material ductilityMaterial strength using repeated/pulsating forcesThin membraneRoom temperature
A method for testing creep performance of metal film by pressing in room temperature includes applying nanoimpression gauge on metal film to obtain displacement ¿C load curve after load is full by controlling strain ratio and press ¿C in depth, converting said curve to be stress ¿C strain ratio curve to obtain stress index of creep performance and using obtained stress index to evaluate service stability of metal film.
Owner:XI AN JIAOTONG UNIV
System and kit for stress and relaxation management
InactiveUS8529457B2Low stress levelImprove physical conditionElectrocardiographyCatheterRelevant informationRR interval
Owner:KONINK PHILIPS ELECTRONICS NV
Water-soluble film having improved dissolution and stress properties, and packets made therefrom
Disclosed is a pouch having at least one sealed compartment containing a first composition. At least one wall of the at least one sealed compartment is made from a water-soluble film having any suitable thickness. The water-soluble film comprises PVOH polymer such that when the film has a thickness of about 76 microns the film is characterized by a Dissolution Index of about 620 to about 920, or of about 665 to about 920, or about 710 to about 920; and a Stress Index of about 145 to about 626, or about 155 to about 480, or about 165 to about 325.
Owner:THE PROCTER & GAMBLE COMPANY
Working surface outburst risk evaluation index system analysis method
ActiveCN102705010AEnsure safe productionReasonably formulatedMining devicesRisk levelEvaluation result
The invention discloses a working surface outburst risk evaluation index system analysis method, which comprises the following steps of: acquiring gas occurrence data of a mine stope face; comprehensively analyzing the data to form risk evaluation indexes for judging working surface outburst risk, and storing the risk evaluation indexes in a criterion index library; processing the risk evaluation indexes and preset evaluation index critical values to determine the risk level of a working surface region range; and pre-warning according to the risk level. According to the method, working surface outburst risk dynamic evaluation indexes are classified into a gas index, a geology index, a stress index and an outburst prevention measure index on the basis of researching the gas occurrence rule of the mine stope face, so that the change rule of each evaluation index is grasped in time and analyzed intelligently, a working surface outburst evaluation result is formed comprehensively, outburst risk pre-warning of different levels is generated automatically, and real-time change update of each evaluation index can be predicted along with outburst; and the blindness of outburst prevention work is reduced, outburst prevention engineering cost is saved, and safe production of a mine is ensured.
Owner:CHINA COAL TECH ENG GRP CHONGQING RES INST
Comprehensive evaluation method of roller compacted concrete dam layer characteristics and states
ActiveCN102750443AComprehensive evaluationSpecial data processing applicationsRoller-compacted concreteEvaluation system
The invention provides a comprehensive evaluation method of roller compacted concrete dam layer characteristics and states. The comprehensive evaluation method comprises the following steps of (1) determining target problem influencing factors and layers, sufficiently considering influencing factors of the roller compacted concrete dam layer characteristics and states in practical engineering, and building a deformation index, transfusion index and stress index layering evaluation system; (2) determining estimation scales, standards and measuring methods of evaluation indexes; (3) building a deformation, transfusion and stress monitoring model for roller compacted concrete dam; (4) adopting a G1 method to empower the evaluation indexes; and (5) conducting comprehensive evaluation on the roller compacted concrete dam layer characteristics and states through cloud model conversion of ground floor evaluation indexes and comprehensive cloud calculation of a last layer indexes. The comprehensive evaluation method is based on a cloud model and uses real time monitoring data of the roller compacted concrete dam to serve as an analysis basis, overcomes the defect that a traditional method can only evaluate certain point or certain time of the roller compacted concrete layer, and achieves dynamic and comprehensive evaluation of the roller compacted concrete dam layer characteristics and states.
Owner:HOHAI UNIV
Health care system and method using stress index acquired from heart rate variation
InactiveUS20140005947A1Effectively supporting well-being lifeHealth-index calculationEvaluation of blood vesselsHealth indexHeart rate variation
A health care system and method using human body indexes acquired from human body information are disclosed. The present health care method includes receiving human body information, calculating a human body index based on the received human body information, generating a health care program based on the calculated human body index and providing the generated health care program to a user. By this system and method, it becomes possible to measure and monitor stress / fatigue / health indexes of a user in living environments, thereby effectively supporting well-being life of the user.
Owner:KOREA ELECTRONICS TECH INST
Method for determining initiation stress index of damaged rock
ActiveCN110031307AGuaranteed accuracyImprove objectivityMaterial strength using tensile/compressive forcesReference lineTriaxial compression
The invention discloses a method for determining an initiation stress index of damaged rock. The method comprises the following steps of firstly, carrying out triaxial compression test on the damagedrock, and recording corresponding test data; secondly, marking a point corresponding to an axial stress-lateral strain curve as a point N according to a damage stress index of the rock; thirdly, determining an initial point of the lateral strain according to a point of inflection of the axial stress-lateral strain curve, and marking as a point M; and finally, connecting the point N and the point Min the axial stress-lateral strain curve to obtain a reference line NM, and obtaining a lateral strain difference value by computing a difference value between the actually measured lateral strain and the reference line, wherein the maximum value of the lateral strain difference value is the initiation stress of the rock. According to the method, an initial fracture section of the lateral strainof the damaged rock at the microstructure of the initial stage is removed, and the accuracy of determining the crack initiation of a new crack in the damaged rock corresponding to the initiation stress is ensured; according to the method, the influence of human factors can be removed, the method has strong objectivity and is also easy to program and realize batch work.
Owner:WUHAN UNIV
Voice annotation quality consistency detection method
The invention provides a voice annotation quality consistency detection method. The voice annotation quality consistency detection method comprises the following steps of (1) annotating a file to be in a TextGrid format, dividing annotation forms into three types and designing three corresponding consistency detection formulas according to the three different annotation forms; (2) detecting consistency of a file comprising six layers of annotation information, wherein the six layers of information respectively is a polysyllable layer (PY layer), an initial consonant and simple vowel layer (SY layer), an unvoiced sound and voice sound mute layer (SUV layer), an auxiliary language information layer (PARAL layer), an emotion layer (EMO layer), a stress index layer (ST layer); (3) selecting the corresponding consistency detection formulas according to the annotation forms of the annotation layer; (4) setting the time error T0, enabling annotation results to be consistent if annotation contents of two annotator are identical and the time error or less than and equal to T0, enabling the annotation results to be inconsistent and sequentially calculating the consistency of the layers. The voice annotation quality consistency detection method provides basis for speech database annotation quality detection and is effectively for detection of automatic voice annotation quality and manual annotation quality.
Owner:BEIHANG UNIV
Method for using tissue culture to separate salt-tolerant tomato
InactiveCN101189956APrevent infestationConsistent growth environment conditionsSeed and root treatmentCultivating equipmentsGermplasmNutrient solution
The invention discloses a method of further screening salt tolerant tomato from seedlings of tissue culture of certain salinity under hydroponics condition by utilizing tissue culturing in combination with nutrient solution culturing to screen the salt tolerant tomato. The method consists of the following steps: (1) sample seeds provided are sterilized and inoculated in sterilized water and germinated; (2) germinated seeds that are acquired from step (1) are respectively inoculated on MS culture medium for NaCl stress treatment; (3) salt damage investigation and calculation of salt stress indexes; (4) seedlings of tissue culture under NaCl concentration of 90mmol.L<-1> are transported into a greenhouse and transplanted into the nutrient solution of the concentration of 90mmol.L<-1> after seedling recovering. Seedlings are harvested 10 days later, and all indexes of the seedlings are recorded. The method of the invention can assess salt resistance of tomatoes of various breeds more accurately, and is of great significance for providing theoretical basis for screening and utilizing of salt resistant tomato seed resource and establishing salt resistance culture.
Owner:INST OF GARDENING ACAD OF AGRI OF SHANGHAI
Method for representing single-crystal Ni-base alloy creep resistance
InactiveCN105784508ASimple structureMethod is feasibleInvestigating material ductilityConstant stressSingle crystal
A method for representing single-crystal Ni-base alloy creep resistance comprises the steps of building a creep curve model suitable for single-crystal Ni-base alloy creep characteristics; determining model parameters to obtain a creep curve equation; performing creep data regression to obtain a fitting creep curve for describing a creep process; obtaining a creep rate equation, obtaining the minimum calculation creep rate and calculating a creep rate curve; combining specific requirements for representing the single-crystal Ni-base alloy creep resistance.Various single-crystal Ni-base alloy creep curves under constant temperature and constant stress except the extremely-high temperature or extremely-high stress and creep rate distribution can be accurately expressed; the corresponding relations of various creep curve equation items and creep parameters and alloy creep curves is revealed; the problem that some alloy cannot represent creep characteristics easily through the creep activated energy and stress indexes is solved; and the method is of great importance in further knowing the creep characteristics and rules of single-crystal Ni-base alloy.
Owner:SHENYANG POLYTECHNIC UNIV
System and method for asset health monitoring using multi-dimensional risk assessment
A power distribution network includes a plurality of power source nodes and component nodes, which direct power from the plurality of power source nodes to a plurality of load nodes; a plurality of sensors positioned to sense power flow information for the plurality of power source and component nodes; and a data warehouse housing the power flow information and diagnostic data for the plurality of power source and component nodes. The power distribution network also includes a control system configured to retrieve the power flow information and the diagnostic data; generate stress and health indices and compute a criticality for each of the power source and component nodes; and generate a risk index for each of the power source and component nodes based on their respective stress index, health index, and criticality. The risk index of each node represents the risk the node poses to the power distribution network.
Owner:EATON INTELLIGENT POWER LIMITED
Voice annotation method for Chinese speech emotion database combined with electroglottography
InactiveCN104732981AAvoid noise disturbanceAccurate segmentationSpeech analysisInformation layerSyllable
The invention provides a voice annotation method for a Chinese speech emotion database combined with an electroglottography. The main annotation content of the voice annotation method comprises eight layers of information which are simultaneously annotated on each voice. The eight layers of information comprises that a first layer is a text conversion layer, speaking content of a speaker and corresponding paralanguage information are made clear; a second layer is a syllable layer, a regular spell and a tone of each syllable are annotated; a third layer is an initial / final consonant layer, initial / final consonants of the syllable layer are annotated separately, and meanwhile tone information is marked; a fourth layer is an unvoiced sound, voiced sound and silence layer, and unvoiced sounds, voiced sounds and silences of the voices are segmented combined with the electroglottography; a fifth layer is a paralanguage information layer, and paralanguage information included in each voice is annotated; a sixth layer is an emotion layer, and according to emotion status which is expressed by the speaker, each voice is annotated with information comprising seven kinds of emotions and expression degrees of each kind of the emotions; a seventh layer is a stress index layer, and intensity information of pronunciation of each voice is annotated; an eighth layer is a statement function layer, and a statement type of each statement is annotated.
Owner:BEIHANG UNIV
Battery control method based on ageing-adaptive operation window
ActiveCN105589040AExtended service lifeShorten the timeElectrical testingSecondary cells charging/dischargingAgeingSimulation
A battery control method based on ageing-adaptive operation window is provided, including: performing a multi-dimensional electrochemical impedance spectrum method to obtain a three-dimensional Nyquist-vs-SoC relation diagram; using an equivalent circuit model to analyze the Nyquist-vs-SoC diagram to obtain at least a major ageing factor; defining an operation window stress index, and based on the stress index defining a plurality of control reference points for the battery operation window; and based on the plurality of control points, performing the control of battery discharging.
Owner:IND TECH RES INST
Coating interface bonding strength detection method and equipment
InactiveCN109406390AOvercome defectsOvercome deficienciesUsing mechanical meansMaterial analysisUltimate tensile strengthMaterials science
The invention relates to the technical field of coating interface bonding strength detection and discloses a coating interface bonding strength detection method. The method includes steps: on the basis of coating and substrate related data, determining a cohesive zone unit which representing coating interface bonding characteristics; on the basis of a cohesion-opening displacement relation abidedby a cohesive zone and cohesive zone parameters, calculating to obtain a coating bonding strength simulation result; on the basis of comparison between the simulation result and a coating bonding strength testing result obtained through experiments, acquiring coating interface bonding strength description stress indexes and energy indexes. By the coating interface bonding strength detection method, a whole process of interface crack initiation and expansion along an interface can be described, given interface bonding performance representation indexes only depend on intrinsic characteristics of coating materials and are irrelevant with specimen geometry.
Owner:CASIC DEFENSE TECH RES & TEST CENT
Biologically controlled vehicle and method of controlling the same
A vehicle that performs a lane departure warning or lane keeping assistance by reflecting a driver's stress index to more effectively guarantee safe driving, and a method of controlling the same are provided. The vehicle includes a biological signal detecting unit configured to detect a biological signal of a driver and a lane detecting unit configured to detect a lane within which a vehicle is running. A controller is configured to calculate a stress index of the driver based on the detected biological signal of the driver, determine a lane access degree of the vehicle based on the detected lane, and execute a warning output to the driver based on the calculated stress index and the determined lane access degree of the vehicle.
Owner:HYUNDAI MOTOR CO LTD +1
Detecting, assessing and managing extreme epileptic events
Owner:FLINT HILLS SCI L L C
Headset apparatus for detecting multi bio-signal
InactiveUS20160262704A1Accurately indexedAccurate measurementElectroencephalographyElectrocardiographyEngineeringHeadphones
The invention relates to a headset apparatus for detecting a multi bio-signal comprising: a headset body configured to be mounted on a user's head; a plurality of electrodes which are exposed on an outer surface of the headset body so as to be in contact with a forehead of a user when the headset body is mounted on a user's head; a brainwave detection unit which is embedded in the headset body and which detects a brainwave signal based on a signal detected by the plurality of electrodes; a heartbeat detection module which extends from the headset body through a signal cable and which is configured to be mounted on a user's ear to detect a heartbeat signal; and a headset controller to determine a complex stress index based on the brainwave signal detected by the brainwave detection unit and the heartbeat signal detected by the heartbeat detection module. Accordingly, the apparatus can measure a user's stress index accurately by measuring a multi bio-signal such as a brainwave and can be manufactured in the form of a wearable device.
Owner:SOSO
Facility crop sparse sunlight stress diagnostic method
The invention discloses a facility crop sparse sunlight stress diagnostic method. According to the method, the processing time of a manual climatic box is set, physiology and biochemistry indices of crops are measured, the relationship between sparse sunlight stress and parameters of the crops is analyzed, and the computational formula of a sparse sunlight stress index is given to represent the degree of sparse sunlight stress; on the basis of the influence of the sparse sunlight stress on the maximum photosynthetic rate and PSII maximum photochemical efficiency of the crops, disaster indices causing different grades of sparse sunlight stress are determined. By means of the sparse sunlight stress index established with the method, the degree of sparse sunlight stress suffered by the facility crops in a certain period can be determined.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Method and device for estimating nervous degree of human body by optical plethysmography
A method and apparatus for evaluating human stress using PhotoPlethysmoGraphy (PPG) are provided. The method of evaluating human stress using PhotoPlethysmoGraphy (PPG), comprising: defining at least one PPG parameter; radiating light having at least one wavelength reacting to a blood component to be measured at a measuring target and measuring a PPG signal from the measuring target during a predetermined period of time; and evaluating human stress using stress indexes obtained from the PPG parameter.
Owner:SAMSUNG ELECTRONICS CO LTD
Health care system and method using stress index acquired from heart rate variation
InactiveUS20150142332A1Effectively supporting well-being lifeHealth-index calculationEvaluation of blood vesselsHuman bodyHealth index
Owner:KOREA ELECTRONICS TECH INST
A crop yield prediction method considering water and salt stress
ActiveCN109345039AImprove forecast accuracyReduce complexityForecastingResourcesSoil scienceTranspiration
A method for predict crop yield comprehensively considering wat and salt stress The invention relates to the technical field of agricultural water and soil engineering, which is used for predicting the actual yield of a certain kind of crop. The method comprises the following steps: obtaining the water absorption distribution of the root system and the transpiration evapotranspiration of the aboveground part in each day of the growth period of the crop in the farmland to be predicted; Gets the minimum soil water potential corresponding to the category, maximum soil water potential, the value of stress compensation coefficient and relative yield coefficient, the predicted total stress index in the farmland to be predicted is obtained, Then, the predicted relative yield ratio of crops in thefarmland to be predicted is obtained, and the predicted actual yield of crops in the farmland to be predicted is obtained by multiplying the ideal yield ratio and the predicted relative yield ratio,so as to uniformly consider the effects of three kinds of stresses on crop yield, so that the precision of crop yield prediction is improved and the complexity of crop yield prediction is reduced.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
Method and apparatus for evaluating human stress using photoplethysmography
A method of evaluating human stress using photoplethysmography (PPG) includes defining at least one PPG parameter, radiating light having at least one wavelength, which reacts to a blood component to be measured, at a measuring target and measuring a PPG signal from the measuring target during a predetermined period of time, and evaluating a level of human stress using a plurality of stress indexes obtained from the PPG parameter.
Owner:SAMSUNG ELECTRONICS CO LTD
Facility crop low-temperature stress diagnostic method
The invention provides a facility crop low-temperature stress diagnostic method. According to the method, by setting the temperature and processing time of a manual climatic box, physiology and biochemistry indices of crops are measured, the relationship between low-temperature stress and parameters of the crops is analyzed, and the computational formula of a low-temperature stress index is given to represent the degree of low-temperature stress; on the basis of the influence of the low-temperature stress on the maximum photosynthetic rate, chlorophyll fluorescence parameters and enzyme activity of the crops, disaster indices causing different grades of low-temperature stress are determined. By means of the low-temperature stress index established with the method, the degree of low-temperature stress suffered by the facility crops in a certain period can be determined by observing daily average temperature and the lasting time of the temperature.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
Monitoring and early warning device and method for human multiple physiological parameters under extreme high and low temperature environments
The invention provides a monitoring and early warning device and method for human multiple physiological parameters under extreme high and low temperature environments. The device comprises a multiplephysiological parameter acquisition unit, a control unit, an early warning unit, a display unit, a storage unit, a communication unit and a power supply unit; the multiple physiological parameter acquisition unit is connected to the control unit through the communication unit; and the control unit is connected to the early warning unit, the display unit and the storage unit through the communication unit. The method monitors a plurality of human physiological parameters including an electrocardiogram parameter, a blood oxygen parameter, a blood pressure parameter and multi-point skin temperatures, calculates an average skin temperature, metabolic rate, core temperature, cold stress index or a thermal stress index value of the human body, and performs grading early warnings for the risks of personnel, thereby greatly improving the safety of emergency responders when working in extremely high and low temperature environments.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)
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