248 results about "Limiting factor" patented technology

The ability of an ultrasonic system to sweep and lock onto a resonance frequency of a blade subjected to a heavy load at startup is improved by applying a high drive voltage or a high drive current while systematically increasing the level of the applied signal. Increasing the drive signal to the hand piece results in an improved and more pronounced “impedance spectrum.” That is, under load, the increased drive signal causes the maximum phase margin to become higher and the minimum / maximum impedance magnitude to become more pronounced. Increasing the excitation drive signal to the hand piece / blade at startup significantly alleviates the limiting factors associated with ultrasonic generators, which results in an increase of the maximum load capability at startup.

The process described by this invention involves the hydroconversion of vegetable oils appropriately selected for the production of N-paraffins, through hydrotreatment of a stream of vegetable hydrocarbon oils in and / or natural fats that may be used in a pure state or in a mixture with mineral hydrocarbon oil. This mixture flow is submitted to the process of hydrotreatment, obtaining as a result, a product flow with an elevated content of N-paraffins in the range of C10-C-13. This process provides an alternative to the usual process that uses a mineral hydrocarbon oil load (petroleum kerosene of paraffin base) to produce C10-C13 N-paraffins that are raw materials for the production of detergents (LAB), being, therefore, especially advantageous for use in situations where kerosene is a limiting factor for producing N-paraffins, resulting in a product of good quality with a reasonable gain in the production of N-paraffins.

A system and method to detect and mitigate denial of service and distributed denial of service HTTP “page” flood attacks. Detection of attack / anomaly is made according to multiple traffic parameters including rate-based and rate-invariant parameters in both traffic directions. Prevention is done according to HTTP traffic parameters that are analyzed once a traffic anomaly is detected. This protection includes a differential adaptive mechanism that tunes the sensitivity of the anomaly detection engine. The decision engine is based on a combination between fuzzy logic inference systems and statistical thresholds. A “trap buffer” characterizes the attack to allow an accurate mitigation according to the source IP(s) and the HTTP request URL's that are used as part of the attack. Mitigation is controlled through a feedback mechanism that tunes the level of rate limit factors that are needed in order to mitigate the attack effectively while letting legitimate traffic to pass.

Methods, apparatuses, systems, and articles of the invention are used to enhance the efficiency of a computing environment, and to improve its responsiveness to one or more users. In the invention, queuing of data or computer instructions is avoided since this would detract from best case performance for a network environment. The rate-limiting factor for the network is determined, and all constraints imposed by the rate-limiting factor are determined. Business logic is programmed in modules sufficiently small to avoid queuing of instructions. Data is stored by frequency of access and persistence to increase responsiveness to user requests. Requests for data from a data storage device are fulfilled not only with the requested data, but also additional data which is likely to be requested in the navigational hierarchy of presentations to which the requested data belongs.

An improved circuit wiring layout provides smooth circuit wiring in a peripheral circuit region adjacent to a memory cell region of a semiconductor memory device, and eliminates a write-speed limiting factor. Forming a metal (instead of a metal silicided polysilicon) wiring layer to be connected to a gate layer, to transmit an electrical signal to the gates of FET (e.g., MOSFET (Metal Oxide Semiconductor Field Effect Transistor) transistors formed in the peripheral circuit region; the metal wiring layer is formed (e.g., using one metal damascene process), on a layer different from a word line layer formed on the gate layer (e.g., using another metal damascene process), thereby obtaining a layout of a peripheral circuit region having a reduced area and without using a silicide process.

Disclosed is a portable cooler device comprised of recyclable materials. Some embodiments of the device comprise components constructed entirely of, or substantially of, cellulose. Other embodiments may be comprised of recyclable materials not classified as cellulose such as, but not limited to, cotton, bamboo, hemp, or other natural fibers. The specific percentages of recycled and / or recyclable content are not limiting factors for the invention; however, most embodiments have consistent materials of construction such that the entire device may be recycled in a single recycling process without the need for deconstruction. Further, if not recycled, embodiments are operable to biodegrade within a reasonable amount of time when exposed to the elements in a landfill. Typical embodiments are comprised of an inner shell, an outer shell having an integrally hinged lid, and pressed cellulose insulating boards sandwiched between the shells.

Disclosed is a portable cooler device comprised of recyclable materials. Some embodiments of the device comprise components constructed entirely of, or substantially of, cellulose. Other embodiments may be comprised of recyclable materials not classified as cellulose such as, but not limited to, cotton, bamboo, hemp, or other natural fibers. The specific percentages of recycled and / or recyclable content are not limiting factors for the invention; however, most embodiments have consistent materials of construction such that the entire device may be recycled in a single recycling process without the need for deconstruction. Further, if not recycled, embodiments are operable to biodegrade within a reasonable amount of time when exposed to the elements in a landfill. Typical embodiments are comprised of an inner shell, an outer shell having an integrally hinged lid, and pressed cellulose insulating boards sandwiched between the shells.

The invention provides a micro-service dynamic disposition system based on cloud calculation. The system is characterized in that the system comprises a service management Portal, a system management Portal, a service disposition scheduling apparatus, a service program management device and a service container and belongs to the technical field of Internet cloud calculation. According to the invention, multi-dimensional parameters are configured for the system, and condition matching algorithms corresponding to data structures of the parameters are designed, and the micro-service dynamic disposition and management method and system are disclosed, so that premise matching of cloud calculation micro-service under a multi-dimensional condition is available, the optimal matching of limit factors in the aspects of target service areas, concurrence capability requirements and operation environment are ensured for each piece of service, the service disposition is enabled to reach the granularity of an API level, the calculation resources are more fully utilized, and the dynamic distribution capability of the calculation resources are optimized in a platform level (PaaS).

A system and method to detect and mitigate denial of service and distributed denial of service HTTP “page” flood attacks. Detection of attack / anomaly is made according to multiple traffic parameters including rate-based and rate-invariant parameters in both traffic directions. Prevention is done according to HTTP traffic parameters that are analyzed once a traffic anomaly is detected. This protection includes a differential adaptive mechanism that tunes the sensitivity of the anomaly detection engine. The decision engine is based on a combination between fuzzy logic inference systems and statistical thresholds. A “trap buffer” characterizes the attack to allow an accurate mitigation according to the source IP(s) and the HTTP request URL's that are used as part of the attack. Mitigation is controlled through a feedback mechanism that tunes the level of rate limit factors that are needed in order to mitigate the attack effectively while letting legitimate traffic to pass.

Techniques are provided for use with implantable cardiac stimulation devices equipped for multi-site left ventricular (MSLV) cardiac pacing. Briefly, intraventricular and interventricular conduction delays are detected for paced cardiac events. Maximum pacing time delays are determined for use with MSLV pacing where the maximum pacing time delays are set based on the conduction delays to values sufficient to avoid capture problems due to wavefront propagation, such as fusion or lack of capture. MSLV pacing delays are then set to values no greater than the maximum pacing delays and cardiac resynchronization therapy (CRT) is delivered using the MSLV pacing delays. In an example where an optimal interventricular pacing delay (VV) is determined in advance using intracardiac electrogram-based or hemodynamic-based optimization techniques, the optimal value for VV can be used as a limiting factor when determining the maximum MSLV pacing time delays.

The present invention is directed to a filter media comprised of an electro-conductive scrim so as to improve on the dissipation time of an electrostatic charge. Further, the present invention is directed to a method of making such a filter media, which is formed through hydroentanglement, thus avoiding the deleterious effects of mechanical needling, while providing a filter media having the requisite strength characteristics, without possessing a limiting factor in performance. The filtration media of the present invention also demonstrates a highly desirable uniformity for cost-effective use.

Compositions are provided, which can be used as frameworks for the creation of very stable and soluble single-chain Fv antibody fragments. These frameworks have been selected for intracellular performance and are thus ideally suited for the creation of scFv antibody fragments or scFv antibody libraries for applications where stability and solubility are limiting factors for the performance of antibody fragments, such as in the reducing environment of a cell. Such frameworks can also be used to identify highly conserved residues and consensus sequences which demonstrate enhanced solubility and stability.

The process described by this invention involves the hydroconversion of vegetable oils appropriately selected for the production of N-paraffins, through hydrotreatment of a stream of vegetable hydrocarbon oils in and / or natural fats that may be used in a pure state or in a mixture with mineral hydrocarbon oil. This mixture flow is submitted to the process of hydrotreatment, obtaining as a result, a product flow with an elevated content of N-paraffins in the range of C10-C-13. This process provides an alternative to the usual process that uses a mineral hydrocarbon oil load (petroleum kerosene of paraffin base) to produce C10-C13 N-paraffins that are raw materials for the production of detergents (LAB), being, therefore, especially advantageous for use in situations where kerosene is a limiting factor for producing N-paraffins, resulting in a product of good quality with a reasonable gain in the production of N-paraffins.

Priority-based access systems and methods for shared communication media are provided. The priority and a corresponding weight of traffic to be transmitted on a shared communication medium are determined. This determination may be made, for example, before a first attempt to transmit the traffic, or before a subsequent traffic transmission attempt following an unsuccessful transmission attempt. The weight controls a rate of change of an exponential delay range limit factor in proportion to a number of attempts to transmit the traffic. The resultant weighted delay range limit factor is used to determine a range of delays from which a delay is selected. A transmission back-off time is then determined based on the selected delay.

The invention discloses a multi-parallel capacity optimal distributing method for an active harmonic suppression device. The method is characterized in that a multi-unit redundancy and main and secondary control structure is adopted, and the complete set system is switched under two running modes according to the load harmonic content. The method comprises the following steps: 1) distributing the compensating capacity according to the principle of minimizing the number of running power units when the harmonic capacity is less than the complete set compensating capacity, and coordinating the switching of each power unit to realize the fullest utilization of the complete set compensating capacity; (2) considering three capacity limiting factors, namely, the rated compensating capacity, the effective utilization range of the voltage at the DC side, and the running temperature of a main circuit device when the harmonic capacity is more than the complete set compensating capacity; outputting the capacity limiting coefficient according to the variable step size strategy; preferentially compensating the low-frequency harmonic wave with relatively high compensating content, so as to realize the maximum utilization of the complete set compensating capacity. According to the method, the upper and lower main and secondary controllers are coordinated and matched to realize the optimal utilization of the multi-parallel APF (Active Power Filter) compensating capacity; the feasibility and practical value are raised.

Priority-based access systems and methods for shared communication media are provided. The priority and a corresponding weight of traffic to be transmitted on a shared communication medium are determined. This determination may be made, for example, before a first attempt to transmit the traffic, or before a subsequent traffic transmission attempt following an unsuccessful transmission attempt. The weight controls a rate of change of an exponential delay range limit factor in proportion to a number of attempts to transmit the traffic. The resultant weighted delay range limit factor is used to determine a range of delays from which a delay is selected. A transmission back-off time is then determined based on the selected delay.

The invention relates to a normal-temperature normal-pressure femto-second CARS (Coherent Anti-stokes Raman Spectroscopy) time-resolved spectrum measuring system which relates to the technical field of nonlinear optics and solves the problem of multiple limiting factors of traditional femto-second CARS time-resolved spectrum measuring experiment. Beams output by a femto-second laser are adjusted through a series of reflectors and optical delay lines by the system to form three bundles of beams which have approximate energy and are respectively positioned on three peaks of a square on the vertical direction of the beams, the beams are focused to a sample pool and then emit a new beam along a specific angle, i.e. a CARS signal, the CARS signal is filtered through a filter plate, then received by a probe and input to a monochromator, the data acquisition of an electrical signal converted by a photomultiplier is carried out by utilizing BOCCAR, and the data are input to a computer for data processing. The invention can carry out femto-second CARS time-resolved spectrum measurement under the experimental conditions of normal temperature and normal pressure and is applicable for the femto-second CARS spectrum measurement of gas samples and liquid samples in a static sample pool.

A limiting factor in the operation of EUV lithographic devices is the lifetime or the reflectivity of the reflective optics that is reduced by contamination with carbon-containing substances. Protective coatings that are resistant to oxidation or are inert against water are already known. According to the invention it is proposed to deposit protective coatings on, for example, multilayers that suppress the growth of carbon-containing substances in combination with layers that are inert against residual gas atmosphere and energy input. Even with a long operating time a high reflectivity is thereby retained. The protective coatings may be deposited by electron-beam vaporization, magnetron- or ion-beam sputtering.

The invention discloses a single-mode substrate hybrid laser light source output by a silicon waveguide. The laser light source comprises a Tapper gain structure and an SOI ridge type waveguide structure which are arranged in a stacked mode. The Taper gain structure is attached to the SOI ridge type waveguide structure in an inverted mode through a reflow soldering technology. According to the single-mode silica substrate hybrid laser light source output by the silicon waveguide, an III-V group Taper structure is introduced into a periodicity microgroove hybrid laser, and an optical lower limiting layer is grown on the hybrid laser, so that active area limiting factors are improved, and the mode gains in the III-V group are increased. Meanwhile, the introducing of the Taper structure guarantees high-efficiency coupling of the III-V group structure and the silicon waveguide, and outputting of single longitudinal laser from the silicon waveguide is achieved. The single-mode substrate hybrid laser light source output by the silicon waveguide is low in manufacturing cost, can be used for silicon laser interconnection, the laser light source in optical communication improves the coupling efficiency of an III-V group light source and the silicon waveguide, and a high-efficiency coupling single-mode hybrid silicon semiconductor laser light source is achieved.

The invention discloses a vision robot which is capable of replacing workers to conduct regular inspection on pipes with different pipe diameters. The robot is composed of a mechanical power system and an image transmission system. In the mechanical power system, engagement of a worm gear and a gear and engagement of the gear and a driving wheel are utilized to achieve movement of the robot after a power supply provides energy, a control circuit is utilized to control the advancing direction of the robot, and the advancing direction is transmitted to a receiving screen through a data line for workers to observe. The robot has extremely significant meaning on helping the workers to conduct various pipe regular inspections and explorations. Further, limit factors of a trolley are few in number, and the trolley can adapt to pipes with different pipe diameters through a wheel type diameter reducing system. In the image transmission system, various pipes can be adapted through a vehicle-mounted camera, the robot is strong in power, all gear groups are of engagement structure, and the robot is simple and reliable in structure and high in working efficiency.

The invention discloses a standard face generation method based on a generative adversarial mechanism and an attention mechanism, and the method comprises the steps: a data set design step: building face codes with a plurality of non-limiting factors for a face image according to the related annotation data of a database, and enabling the codes and the face image to serve as the input of a model;A model design and training step: designing a corresponding network structure by utilizing a generative adversarial mechanism and an attention mechanism, and carrying out model training by utilizing the constructed data pair so as to obtain a network model weight; And a model prediction step: predicting the acquired face image through the model. According to the invention, a deep learning networktechnology is applied to standard face generation to generate color, forward and normal illumination standard face images; An accurate standard front face image can be obtained through a deep learningnetwork method, the matching difficulty of the standard front face image and data in a single sample database is reduced, and a solid foundation is laid for subsequent face feature extraction and single sample face recognition.

A symmetrically loaded, shallow suspension speaker with stiff diaphragm having a minimum dimension that is greater than the diameter of the magnet that drives the diaphragm thus allowing the suspension of the diaphragm to extend nearly to the bottom of the speaker basket on the maximum inward excursion of the voice coil and diaphragm such that the suspension operational depth is not the limiting factor of the overall height of the speaker. The elements of the suspension system are designed to maximize the spacing between the inner and outer portions of the suspension, thus minimizing the possibility of wobble in the speaker. The speaker design maximizes air movement in a given mounting depth with a configuration that optimizes the operation of the moving parts that complements the fixed mechanical structural configuration of the non-moving parts in either an overhung or underhung configuration. The design also accommodates user replacement of the voice coil or cone.

The invention relates to a combined data compression algorithm based on effect optimization. The combined data compression algorithm comprises the following steps of forming a compression algorithm set by selecting multiple compression algorithms according to to-be-compressed data types, main characteristics and / or time limiting factors, and obtaining an average decompression speed Di of decompression algorithms to which the multiple compression algorithms correspond; analyzing to-be-compressed data requirements, dividing to-be-compressed data into multiple data blocks, and obtaining public parameters of a computer system; calculating the compression effect values of the multiple compression algorithms used by each data block; comparing the compression effect values of the multiple compression algorithms, and selecting the algorithms with smallest compression effect value as optimal algorithms; implementing data compression calculation according to the optimal algorithm to which each data block corresponds. According to the combined data compression algorithm based on the effect optimization, the advantages of the multiple compression algorithms are fused; meanwhile, the influences of data reading speeds and disk space resources are considered; the data compression effect can be furthest improved, and the performance of practical data reading can also be improved.

A laser radar sensor includes a photoreceptor, a dummy circuit, an amplifier, a selector, and the first and the second detection circuits. A photoreception signal outputted from the photoreceptor and an output signal of the dummy circuit are amplified by the amplifier, and inputted to the second detection circuit. A noise component included in the photoreception signal based on the output signal of the dummy circuit when distance detection is not performed. The distance detection is performed based on the reception signal from which the noise component is removed. As a result, a reduction in detectable distance of the laser radar sensor is less likely to occur. Furthermore, the noise component is detected using the dummy circuit and the selector. Thus, the consideration of the predetermined rotation angle is not required in optical system design and limiting factors in the optical system design can be reduced.

The invention discloses a VMD and CNN-based cable early fault identification and classification method. The method comprises the following steps: step 1, obtaining a to-be-tested analog signal; step 2, selecting a bandwidth limiting factor alpha, a noise tolerance tau and a mode decomposition number K as parameters, and setting parameter values; step 3, performing variational mode decomposition onvarious analog signals, obtaining each mode and the center frequency thereof, and realizing frequency band division; step 4, extracting decomposition modal features and constructing feature vectors;step 5, inputting various signal feature vectors into the convolutional neural network, carrying out parameter modulation training and obtaining a classification result. By using the method, early faults and over-current disturbance of the cable can be accurately distinguished, cable maintenance is completed in time before the early faults become permanent faults, and stable operation of a power grid is maintained.

The invention discloses a calculation method of a tilt corridor of a tilt four-rotor aircraft with periodic variable pitch at constant rotational speed, which comprises the following steps: establishing flight mechanics models of various parts of the aircraft, converting all forces and moments into a body shaft system, and establishing a six-degree-of-freedom balance equation; determining the tiltcontrol mode; solving the upper and lower boundaries of the pitch angle by taking the lift characteristics of the wing as the limiting factor; obtaining the control variables and attitude angles under different state conditions by optimal trimming; finding the corresponding wing lift characteristic limit minimum speed boundary and wing lift characteristic limit high speed boundary; obtaining theavailable power limiting high-speed boundary by solving the required power at different state points. The invention is based on a flight mechanics model, takes into account the parameters of each aspect of the aircraft design, and reflects the specific attributes of each feasible flight point. The invention is also applicable to the tilt corridor calculation of tilt four-rotor aircraft under different control modes.

Due to an ever growing shortage of conventional energy sources, there is an increasingly intense interest in harnessing solar energy. This invention deals with method and apparatus for the direct conversion of solar energy to alternating current power by an active spinning mini-optics system. A limiting factor in the utilization of solar energy in the past has been the high cost of power conversion from dc to ac. By directly producing alternating current power, this invention substantially reduces the cost of generating photovoltaic electricity. This system utilizes a dynamic spinning ensemble of mini-mirrors to both concentrate and modulate rays from the sun onto a photovoltaic collector array. The focusing with superimposed spinning action produces single phase and multiphase alternating current (ac) with substantially higher power output than the direct current (dc) power resulting from the direct incidence of sunlight on the photovoltaic collector.

The utility model discloses a bandwidth control method and a device, which are used on a route switching device with a plurality of interfaces. The method is to field-divide the interfaces according to the physical network structure; wherein each field comprises a group of internal interfaces and a group of external interfaces and the number of the interfaces in each group is one or more; the field bandwidth strategy is established for each field; when the packet is received from an interface, the bandwidth is controlled according to the field bandwidth strategy in the affiliated field and then the packet passing through the bandwidth controlling process is sent to the other group of interfaces in the affiliated field. The utility model considers the interface hardware limiting factors and the logical managing factors sufficiently so as to get rid of the dependency on the single interface, ensure the bandwidth stability of the conversational individual and be propitious to realize the multilayer and fine-grain interface bandwidth control.