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493 results about "Size difference" patented technology

Mechanisms for avoiding problems associated with network address protocol translation

Disclosed are methods and apparatus for avoiding problems caused by converting between two different protocols, such as IPv4 and IPv6. These problems may include, but are not limited to, fragmentation of packets, dropping of packets, and retransmission of packets. Avoiding these problems will reduce the incidence of transmission delays, bandwidth degradation, and additional processing in the packet's transmission path due to such problems. In general terms, the present invention provides mechanisms for modifying a protocol parameter, such as a TCP or UDP parameter, to avoid problems associated with protocol translation, such as fragmentation. In one implementation, the protocol parameter limits the size of a particular portion of the a packet transmitted by a sending computer node or device. For example, a packet size indicator is communicated to the sending computer node so that the sending computer node sends packets limited by the packet size indicator to thereby avoid associated with the size of such packets. In specific TCP embodiments, the size indicator specifies a window size and/or a maximum segment size. For example, if packets transmitted by a sending node to a receiving node are converted from IPv4 to IPv6 and the window size indicated to the sending node (e.g., by the receiving node) is 512 bytes, the window size is adjusted to 500 bytes before reaching the sending node. The adjustment amount may be based on an estimated size increase resulting from converting from IPv4 to IPv6. In this example, the window size is decreased by 12 bytes since a conversion from IPv4 to IPv6 where one 4 byte IPv4 address is changed to a 16 byte Ipv6 address has an associated size difference of 12 bytes. In a specific embodiment, actual changes in packet size may tracked and the adjusted size indicator may be dynamically based on such tracked changes. In other embodiments, the changes in packet size are predicted, and the adjusted size is preemptively changed as needed.
Owner:CISCO TECH INC

Multi-terminal flexible DC grid DC line quick protection method and system based on single-terminal voltage

The invention discloses a multi-terminal flexible DC grid DC line quick protection method and system based on single-terminal voltage. The method comprises the following steps: collecting the voltagesignals on the two sides of DC positive and negative line current limiting reactors in real time; forming a low voltage starting criterion; performing wavelet transform on the calculated line mode voltage on the current limiting reactors and calculating the wavelet transform modulus maximum; performing the data validity test and recording the size and the symbol of the first wavelet transform modulus maximum meeting the data validity condition; establishing the fault identification criterion to identify the fault based on the symbol and amplitude difference of the single-terminal voltage traveling wave wavelet transform modulus maximum; and constructing the fault pole identification criterion to identify the fault pole based on the size difference of the voltage traveling wave transient energy. According to the line protection method, the fault direction can be reliably and quickly identified under various initial fault conditions, and the transition resistance, the fault location andthe fault of the AC system and other factors have little influence on the protection criterion so as to have high reliability and sensitivity.
Owner:SHANDONG UNIV +2

Polymer composite material with double-network structure and preparation method thereof

The invention provides a polymer composite material with a double-network structure and a preparation method thereof. The composite material contains fillers A and fillers B, wherein the size of the fillers A is 30 to 500 microns and the size of the fillers B is 1.0 to 20 microns; the size ratio of the fillers A to the fillers B is at least 20; the fillers A and the fillers B are uniformly distributed in a polymer base material, are in mutual overlap joint and penetrate through to form a conductive and heat-conducting access with a staggered network structure; the fillers B with the smaller size are distributed in grids of a loose network structure formed by the fillers A with the large size and are in mutual overlap joint to form a relatively dense network, and the inner part of the obtained composite material has a double-network structure which is good for moving electrons and reducing interface heat resistance, so that the conductive and heat-conducting performances are greatly improved at the same time. A method for constructing double networks by using the size difference of the two types of fillers has an ingenious concept and an operation method is simple; existing high molecular material modified machining equipment is used for realizing production; the method has low cost and is easy to popularize and apply.
Owner:SICHUAN UNIV

Manufacturing method for glass molded products

In a method for molding glass products having a fine structure as of an optical fiber holder with a high size precision, a mold used for the molding has the fine structure in a size such that a size difference occurring when the glass product is cooled down to a room temperature where at the end of molding with a pressure a size of the fine structure of the mold for glass product and a size of a fine structure of the glass product formed by transfer of the fine structure of the mold are the same as one another is so adjusted that a size of the fine structure of the completed glass product falls within a permissive size precision range. The mold may has a size satisfying, as a size of a fine structure at a room temperature, a formula [1+( alpha g- alpha m)x DELTA T+ alpha g'x DELTA T']xSg, wherein Sg denotes a size of a fine structure of thc glass product at the room temperature; alpha g denotes a mean thermal expansion coefficient of the glass to be molded in a temperature range from the room temperature to the glass transition temperature of the glass to be molded; alpha m denotes a mean thermal expansion coefficient of the mold in a temperature range from the room temperature to the glass transition temperature of thc glass to be molded; DELTA T denotes a difference between the room temperature and the glass transition temperature of the glass to be molded; DELTA T' denotes a difference between a temperature at which the mold's pressure exerted to the glass product is released and the glass transition temperature, in a case where the mold's pressure exerted to the glass product is released at a temperature higher than the glass transition temperature after pressing the mold with a high pressure; and alpha g' is a thermal expansion coefficient of the glass to be molded at a mean temperature of summation of the glass sag temperature and the glass transition temperature.
Owner:HOYA CORP +1

Method for producing feed grade ferrous sulfate monohydrate from titanium pigment waste acid condensed slag

The invention discloses a production method of feed grade ferrous sulfate monohydrate. Titanium white waste acid condensed slag is used as the raw material, and is subject to the processes of deacidification, pexitropy, separation, crystal transform and the like to produce the feed grade ferrous sulfate monohydrate, thereby realizing the comprehensive utilization of the titanium pigment waste acid condensed slag as the byproduct for the sulfuric acid method. The method comprises the following steps: mixing mother solutions generated in the ferrous sulfate monohydrate production processes by condensed slag and wet method, using iron powder to reduce the sulfuric acid content to 4% or so, slowly cooling and crystallizing the slurry to generatecoarse ferrous sulfate heptahydrate crystals, and separating impurities from the ferrous sulfate by using the particle size differences between the ferrous sulfate heptahydrate crystals and the impurity particles, thereby purifying the ferrous sulfate in the condensed slag and widening the application field of the condensed slag. The ferrous sulfate heptahydrate is transformed into ferrous sulfate monohydrate at high temperature to produce the qualified feed grade ferrous sulfate monohydrate in huge market demands, thereby changing the waste slag into valuable resources.
Owner:SICHUAN LOMON TITANIUM IND CO LTD

Same-direction forming mode based forming morphology control method for GMAW material increase manufacturing

InactiveCN105880808AHigh forming dimension accuracySuppression of height size differencesArc welding apparatusSize differenceQuality control
The invention provides a same-direction forming mode based forming morphology control method for GMAW material increase manufacturing. The control method includes the steps that arc starting and quenching movement I / O control and given electric signal D / A control of forming current and voltage are completed in the GMAW material increase manufacturing process, and when the forming process is close to the arc quenching end, the forming current, forming speed and forming voltage are gradually decreased within the length range of the arc quenching end; a GMAW welding gun is increased for one layer height and is controlled to return to the forming arc starting end; the upper surface temperature of a formed part is reduced to be 20-300 DEG C; forming of a residual layer is completed till the forming size of the whole structural part meets the requirements. The same-direction forming mode based forming morphology control method can effectively inhibit the height size difference produced by the part end in the same-direction forming process, decreases the defects produced in the forming process, ensures that higher forming size precision is obtained in GMAW material increase manufacturing in the same-direction forming mode and provides a reliable technical support for forming quality control of GMAW material increase manufacturing.
Owner:SOUTHWEST JIAOTONG UNIV

Fabric fuzzing and pilling image segmentation method based on wavelet transformation and morphological algorithm

The invention discloses a fabric fuzzing and pilling image segmentation method based on wavelet transformation and the morphological algorithm. The method comprises the steps that firstly, histogram equalization is carried out on an acquired fabric fuzzing and pilling image, and eight-stage multi-resolution wavelet decomposition is carried out; secondly, after the coefficient of a first-stage wavelet decomposition layer, the coefficient of a second-stage wavelet decomposition layer and the coefficient of an approximate wavelet decomposition layer are set to be zero, the image is reconstructed, wherein the first-stage wavelet decomposition layer and the second-stage wavelet decomposition layer express the highest-frequency information, and the approximate wavelet decomposition layer expresses low-frequency information; thirdly, binaryzation is carried out on the constructed image according to the maximum between-cluster variance method, and erosion is carried out on the image through a horizontal linear structure element, a 45-degree linear structure element, a vertical linear structure element and a 135-degree linear structure element in sequence; fourthly, dilation is carried out on the eroded image through structure elements with the sequence opposite to that of the structure elements applied to erosion, namely, the 135-degree linear structure element, the vertical linear structure element, the 45-degree linear structure element and the horizontal linear structure element in sequence. By means of the method, the influence of the texture of fabric, illumination unevenness, the surface roughness of the fabric and the size difference and shape difference of fuzzy balls on fuzzing and pilling grade assessment on the fabric can be effectively avoided.
Owner:江苏世纪燎原针织有限公司

Preparation method of nanometer zinc oxide composite dispersion liquid

The invention discloses a preparation method of a nanometer zinc oxide composite dispersion liquid. The method is characterized by comprising the following steps: mixing an oil phase component and an emulsifier according to certain proportion in an oil phase system; adding a dispersion stabilizing agent, a surfactant and a nano zinc oxide powder according to a certain ratio into water in a water dispersion system; and respectively uniformly mixing the two phases and heating to a certain temperature, rapidly stirring the two phases for homogeneous mixing, and cooling to room temperature to form a stable emulsion dispersion system. The nanometer zinc oxide composite dispersion liquid prepared by the above method, the particle size difference of zinc oxide particle and nano zinc oxide powder raw material is within 20%; in the dispersion liquid, nano zinc oxide particles are suspended in the liquid in a monodispersed form; and placing for more than 60 days, the nano zinc oxide composite dispersion liquid does not generate the phenomena of layering, demulsification or caking. Moreover, the preparation method has the advantages of simple operation, wide adjustable range of parameters, low energy consumption and short cycle, and is suitable for pilot plant test amplification and industrial large-scale production.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH

Continuous fiber-manufacturing device

The invention discloses a continuous fiber-manufacturing device, relates to an electrostatic spinning device, and provides the fiber-manufacturing device capable of overcoming the shortcomings that liquid supply is not continuous and large in jet flow size difference, and surface solution solidifies and the like, and capable of guaranteeing uniformity of diameters of fiber and continuity of electrospinning nanometer fiber. The continuous fiber-manufacturing device is provided with a motor, a connector, a rotating shaft, an inducing rolling wheel, a needle tip array, an annular liquid-storage groove, a direct-current high-voltage power supply, a collection plate and a liquid-supplying device. An output shaft of the motor is connected with the rotating shaft through the connector. The inducing rolling wheel is connected with the rotating shaft in a rotating mode. Gear rings are arranged on the surface of the inducing rolling wheel. The needle tip array is arranged on the surface of the inducing rolling wheel. Annular racks are arranged inside the annular liquid-storage groove and are meshed with the gear rings of the inducing rolling wheel. The positive electrode of the direct-current high-voltage power supply is connected with an annular solution groove, and the negative of the direct-current high-voltage power supply is connected with the collection plate. The collection plate is arranged above the annular solution groove. The collection plate is grounded. The liquid-supplying device is communicated with the annular liquid-storage groove through a liquid-conveying pipe.
Owner:XIAMEN UNIV

Enhanced resynchronization in a storage-based mirroring system having different storage geometries

Resynchronization of data between a primary (production) data site and a secondary (recovery) site following a failure is enhanced when the size of a data track at the production site is different from the size of a data track at the recovery site. The recovery site reads an out-of-sync (OOS) bitmap created at the production site and expands or contracts the bitmap to accommodate the size difference. The resulting production site bitmap is merged with a OOS bitmap maintained at the recovery site to indicate those tracks which are to be transferred from the recovery site to the production site. Thus, only those tracks which are required to be transferred are transferred. Buffer space may be allocated in which to expand or contract the production site OOS bitmap. Buffer space may be conserved by sequentially reading portions of the production site OOS bitmap into a small buffer. In a first operation, half of the bitmap portion is discarded and the remaining half is expanded into the buffer and merged with a corresponding section of the recovery site OOS bitmap. In a second operation, the portion is re-read into the buffer and the other half discarded. The remaining half is then expanded into the buffer and merged with the corresponding section of the recovery site OOS bitmap. The process continues until the entire production site OOS bitmap has been merged with the recovery site OOS bitmap.
Owner:IBM CORP

Construction method of slant-well pulling into main tunnel for three-line long-span tunnel

The invention discloses a construction method of slant-well pulling into main tunnel for a three-line long-span tunnel. The method comprises following steps: first: excavating a slant well to junctionwith a main tunnel, installing a reinforcing support at the intersection of the slant well and the main tunnel, wherein the end of the reinforcing support is provided with a door frame which is vertically provided with a connecting board; second: entering the main tunnel through top brushing upwards by means of the pilot tunnel method, obliquely upward excavating the climbing pilot tunnel until the pilot tunnel is positioned at the same elevation with the main tunnel top, continuing construction of pilot tunnel to a left sideline of the main tunnel; third: installing main line arch and constructing primary support of the main tunnel; fourth: constructing the main line tunnel according to double side wall pilot tunnel method and timely supporting and protecting temporary support to form the double side wall pilot tunnel method construction technology. Reinforcing supports are installed at the intersection of the slant well and the main tunnel; the end of the reinforcing support is provided with a door frame which is vertically provided with a connecting board; the structure at the reinforcing intersection is stable, the structure is simple, the construction is convenient, safe andreliable, which effectively solves the problems that size difference between the slant well and the main line section is large and the construction is difficult.
Owner:SHENZHEN MUNICIPAL DESIGN & RES INST +1

3D simulation matching processing method and system based on mobile terminal

ActiveCN103871099AAvoid the trouble of back and forth exchangeWith 3D simulation matching functionBuying/selling/leasing transactions3D modellingSize differencePhysical model
The invention discloses a 3D simulation matching processing method and system based on a mobile terminal. The method includes the steps that when a user conducts online clothes shopping, an operation instruction of the user is received to select clothes with the corresponding style, and according to the selected clothes with the corresponding style, a 3D physical model base is searched for a 3D physical model corresponding to the selected clothes with the style; simulation matching is conducted on the found 3D physical model of the clothes and a preset user physical 3D model, and the size range and contour data of the matched external contour are referred, compared and analyzed; after matching is finished, a matching effect picture is displayed, size difference data are fed back, and a corresponding matching result is output in a matching mode. By the adoption of the 3D simulation matching processing method and system, when the user conducts online shopping through the mobile terminal, matching of individual physical 3D information with an object can be synchronized, the individual 3D information is provided for simulation matching, and corresponding prompts are given; the user can buy fitted clothes without going out, and convenience is brought to the user.
Owner:HUIZHOU TCL MOBILE COMM CO LTD

High-specific-strength high-plasticity refractory high-entropy alloy and preparing method thereof

ActiveCN108677077AStrong plastic matchingHigh strengthSize differenceValence electron
The invention relates to a high-specific-strength high-plasticity refractory high-entropy alloy and a preparing method thereof, and belongs to the technical field of metal materials. The expression isVaNbbZrcTidMeNfPg, wherein M, N, P can be the elements such as Cr, Al, Ni, Fe, Si, O, B, C, and N; a is no less than 15% and no more than 20%, b is no less than 15% and no more than 25%, c is no lessthan 30% and no more than 50%, d is no more than 30% and no less than 50%, e is no less than 0 and no more than 5%, f is no less than 0 and no more than 5%, g is no less than 0 and no more than 5%, and the sum of a, b, c, d, e, f and g is 100%; and meanwhile, the valence electron concentration VEC of the alloy is no less than 4.1 and no more than 4.4, and the atomic radius size difference Delta is no less than 5.5% and no more than 6.4%. The alloy is prepared by various methods, the density of the VaNbbZrcTidMeNfPg alloy is less than 6.5 g*cm<-3>, the room temperature tensile strength is morethan 900 MPa, the plastic deformation is more than 15%, and the high specific strength and high plasticity are achieved; and after the temperature is increased to 600 DEG C, the weakening of the material is not very obvious, after the temperature is increased to 800 DEG C, the material can still maintain a certain strength, and the alloy has a certain storage ability for H2 and can be used in thefield of energy materials.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
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