347 results about "Segment structure" patented technology

A method for efficiently and accurately inventorying image features such as timber, including steps of segmenting digital images into tree stands, segmenting tree stands into tree crowns, each tree crown having a tree crown area, classifying tree crowns based on species, and analyzing the tree crown classification to determine information about the individual tree crowns and aggregate tree stands. The tree crown area is used to determine physical information such as tree diameter breast height, tree stem volume and tree height. The tree crown area is also used to determine the value of timber in tree stands and parcels of land using tree stem volume and market price of timber per species.

A system and method includes passive screening of transient messages in a distributed computing environment. A transient packet stream is passively monitored at a network boundary. Incoming datagrams structured in compliance with a network protocol layer are received. One or more of the incoming datagrams are reassembled into a segment structured in compliance with a transport protocol layer. Contents of the reassembled segment are scanned for a presence of at least one of a computer virus and malware to identify infected message contents.

A technique is provided for automatically generating a bone mask in CTA angiography. In accordance with the technique, an image data set may be pre-processed to accomplish a variety of function, such as removal of image data associated with the table, partitioning the volume into regionally consistent sub-volumes, computing structures edges based on gradients, and / or calculating seed points for subsequent region growing. The pre-processed data may then be automatically segmented for bone and vascular structure. The automatic vascular segmentation may be accomplished using constrained region growing in which the constraints are dynamically updated based upon local statistics of the image data. The vascular structure may be subtracted from the bone structure to generate a bone mask. The bone mask may in turn be subtracted from the image data set to generate a bone-free CTA volume for reconstruction of volume renderings.

Methods and systems for detecting trees in aerial imagery are provided. A method for detecting trees in aerial imagery may include training a pixel-level classifier to assign a tree or non-tree label to each pixel in an aerial image. The method may further include segmenting tree and non-tree regions of the labeled pixels. The method may also include locating individual tree crowns in the segmented tree regions using one or more tree templates. A system for detecting trees in aerial imagery may include a trainer, a segmenter and a tree locator.

A peer-to-peer cache architecture stores peer address certificates in different cache segments according to the number of IDs being stored and their relative distance in the peer name space. The cache instantiates regions of decreased range and increased granularity as additional information from close peers is learned. In a large peer cloud where the number of instantiated IDs is not known, each succeeding cache region covers one tenth of the preceding cache region. For peers with multiple IDs registered locally, the segmented cache of the present invention combines overlapping segments of the same granularity to eliminate the duplication of information that would otherwise occur. A cache tree, an instantiated segment tree, and an uninstantiated segment tree are arranged in red-black trees to simplify the search and proper placement and instantiation of information.

The invention discloses a rapid prototyping shape memory high polymer material and a preparation method and application thereof. The high polymer material comprises a physical cross-linking hard-segment structure which can be rapidly cooled and formed and a high polymer soft-segment structure which can be fixed and temporarily deformed, wherein the hard-segment structure is formed by combining diisocyanate and a crystallization type chain extender; the soft-segment structure is formed by combining polyester type or polyether type polyhydric alcohol with the crystallization type chain extender; and the molar ratio of hydroxyl in the polyhydric alcohol to diisocyanate group in the diisocyanate is 1:2-1:5. The material is functional, and the printed 3D product has the capability of self-deforming and restoring the time dimensionality; the material has good cooling forming performance, and the hard-segment part can rapidly form a physical cross-linking point in the temperature difference range of melt extrusion; the contained stationary phase and restoration phase double components are wide in material selection and low in price, a preparation process is simple, the defects that synthetic raw materials are expensive, the process is complex and the like in the prior art can be overcome, and the material is suitable for large-scale production.

A method and system of defining a boundary of a part of a blood vessel in an image captured by an ex vivo imager, where such part of the blood vessel is free from contrast material.

The invention discloses a method for predicating a homologous recombination deficiency (HRD) mechanism and a method for predicating response of patients to cancer therapy and relates to the field of biological information predication. The method comprises the step of judging whether a tumor sample has homologous recombination deficiency or not according to one or more comprehensive values in a large-segment INDEL (Insertion / Deletion) fraction, a copy number variation fraction and a tumor mutation load fraction, wherein the comprehensive values can also comprise a loss of heterozygosity variation fraction. By adopting the method disclosed by the invention, predication of a chromosome large-segment structure, a chromosome gene type number, a chromosome gene copy number, a chromosome variation interval and abnormal loss of heterozygosity and chromosome telomeric imbalance is realized, so that an evaluation range is more complete and HRD can be accurately predicated; the comprehensive values also can be used for determining whether the patients have response to a therapeutic regimen containing one or more of a PARP (Poly Adenosine Diphosphate Ribose Polymerase) inhibitor, an DNA (Deoxyribonucleic Acid) injury inhibitor, a topoisomerase II / II+inhibitor, a topoisomerase I inhibitor and radiotherapy; the method is simple and has wide general applicability.

An apparatus, system, and method are disclosed for automatically generating an Information Management System (IMS) hierarchical database description from an arbitrary Extensible Markup Language (XML) schema. The apparatus, system, and method may include the steps of: parsing an XML schema including a single root element; generating an XML schema tree that corresponds to the XML schema; generating an IMS segment tree such that each XML schema node is represented by a corresponding IMS segment node; reducing the number of IMS segment nodes from the IMS segment tree based on reduction rules, such that the IMS segment tree corresponds to IMS hierarchical database constraints; and generating IMS database description corresponding to the reduced IMS segment tree.

A technique is provided for automatically generating a bone mask in CTA angiography. In accordance with the technique, an image data set may be pre-processed to accomplish a variety of function, such as removal of image data associated with the table, partitioning the volume into regionally consistent sub-volumes, computing structures edges based on gradients, and / or calculating seed points for subsequent region growing. The pre-processed data may then be automatically segmented for bone and vascular structure. The automatic vascular segmentation may be accomplished using constrained region growing in which the constraints are dynamically updated based upon local statistics of the image data. The vascular structure may be subtracted from the bone structure to generate a bone mask. The bone mask may in turn be subtracted from the image data set to generate a bone-free CTA volume for reconstruction of volume renderings.

The invention relates to a method for expanding excavation of a large-diameter shield tunnel for subway station construction through a pile arch wall support. The method comprises the steps that a single-hole double-track tunnel of a station portion is used as a part of the station structure, pipe segment structures at the bottom and the top of a shield are reserved, and a bottom longitudinal beam, a middle partition wall and a top longitudinal beam of the station structure are constructed; the remaining station structures on the two sides of the shield tunnel are formed through expanding excavation, an air flue at the end of the station is used as a working plane, expanding excavation is carried out on the two sides of the large-diameter shield tunnel by the adoption of a hole pile method, the pipe segment structures on the two sides of the shield are removed in the expanding excavation process, and meanwhile the connection measure between a cast-in-place structure and the remaining pipe segments is taken to form the single-layer double-span side platform subway station. The method for expanding excavation of the large-diameter shield tunnel for subway station construction through the pile arch wall support has the advantages of being definite in stress, reasonable in conversion, convenient to construct and the like.

The invention provides a generation method for a preamble symbol and a receiving method. The method comprises: on the basis of an obtained time-domain main body signal, a time domain symbol having any one of two three-segment structures; and a preamble symbol is generated based on one or two time domain symbols. The two three-segment structures are as follows: one three-segment structure is formed by a main body, a prefix generated based on the rear part of the main body, and a postfix generated and modulated based on the rear part of the main body; and the other three-segment structure is formed by a main body, a prefix generated based on rear part of the main body, and a super prefix generated and modulated based on the rear part of the main body. A common preamble symbol is generated based on one time domain symbol; and a reinforced preamble symbol is generated in a splicing mode based on two time domain symbols having the different three-segment structures. Besides, the receiving method of a receiving terminal includes: a physical frame is processed to obtain a baseband signal; whether an expected common or reinforced preamble symbol exists in the baseband signal is determined; and if so, the position of the preamble symbol in the physical frame is determined and carried signaling information is solved.

A multi-use mobile support assembly structured to be selectively used as a walker or a wheelchair including a frame having at least one adjustable frame segment structured to be disposed in either a first orientation or a second orientation. The frame may be foldable and includes at least a first front leg and at least a first rear leg, having wheel assemblies connected thereto for travel of the frame, whether used as a walker or wheelchair, over a different ground or support surfaces. In one embodiment, the first rear leg includes an upper member having a first end a second end and a lower member having a first end and a second end. The first end of the upper member may be pivotally connected to the first end of the lower member, and the lower member is removable with a corresponding wheel assembly or pivotal between an extended use position and a folded storage position.

A simple and fast algorithm for multi-dimensional packet classification by solving the best matching filter problem. The substantial part of the algorithm includes the search of filters being concurrently stabbed by the packet using a KD-tree data structure. Another aspect of the present invention includes the classification of the packet according to its destination address using a second data-structure which preferably consists of a one dimensional segment tree. In a preferred embodiment of the present invention, the packet is first classified according to its protocol type, then the packet is classified according to its destination address using a one dimensional segment tree data structure, and finally, a 6 dimension KD-tree is used to find the filters being stabbed by the remaining 3 parameters of the packet. Among the filters, which comply with the packet, the filter which applies to the packet is the filter with the highest pre-determined priority. Theoretical analysis predicts and experimental results verify that in practice, the proposed data-structure can handle a lot of "difficult" filters quickly and efficiently.< / PTEXT>

An embodiment of the invention provides a video segment structured query method and device and electronic equipment. The method includes: acquiring input data containing a to-be-queried target; extracting structural features of the to-be-queried target in the input data, wherein the structural data includes the category of the target, sub-property in the target category and category identity characteristics of the target; querying target characteristic database corresponding to a video database according to the structural characteristics of the to-be-queried target, and determining video segments corresponding to the structural characteristics of the to-be-queried target in the video database, wherein the target characteristic database is composed of structural characteristics extracted from the video data in the video database. By the aid of the embodiment, search efficiency of the video segments corresponding to the target is improved.

Provided are a preamble symbol receiving method and device, characterizing in that the method comprises the following steps: processing a received signal; judging whether the processed signal obtained contains the preamble symbol desired to be received; and if a judgement result is yes, determining the position of the preamble symbol and resolving signalling information carried by the preamble symbol, wherein the received preamble symbol comprises at least one time-domain symbol generated by a transmitting end using a free combination of any number of first three-segment structures and / or second three-segment structures according to a predefined generation rule, the first three-segment structure containing: a time-domain main body signal, a prefix generated based on the entirety or a portion of the time-domain main body signal, and a postfix generated based on the entirety or a portion of a partial time-domain main body signal, and the second three-segment structure containing: the time-domain main body signal, a prefix generated based on the entirety or a portion of the time-domain main body signal, and a hyper prefix generated based on the entirety or a portion of the partial time-domain main body signal.

The invention provides a generating method and a receiving method of leading symbols, and a generating device and a receiving device of the leading symbols. Since a time domain symbol has a first kind of three-segment structure, or a second kind of three-segment structure, or the free combination of a plurality of the first kind of three-segment structures and a plurality of the second kind of three-segment structures which are arranged in a random order, so that coherent detection is realized, the problem of decreasing noncoherent detection performance is solved. In addition, a predetermined sequence generation rule of a frequency domain main sequence comprises: giving different root values to predetermined sequences; and / or giving the same root value to the predetermined sequences, and carrying out circulating shifting on the generated sequences. The obtained frequency domain main sequence is utilized to transmit signaling needed by the system, and the transmission efficiency is improved.

The invention belongs to the technical field of shield tunnel segment structure safety monitoring, and provides a subway shield tunnel segment structural stress visual warning device and an operating method thereof. The device comprises a structural stress sensor, a micro data acquiring device, a visual display terminal, a multi-channel data transmitting device and a safety warning device. By the aid of the device and the operating method, subway shield tunnel segment reinforcement stress values and concrete strain values can be acquired continuously, acquired results can be displayed in real time on the inner annular face of a segment to the detected to provide convenience to operators in a tunnel for observing in real time, real-time warning of segment stress can be realized in a manner of photochromic warning, requirements of grasping segment structure stress data information by the operators in the tunnel are met, and automatic safety warning is realized.

The invention discloses a memory allocation method, comprising the following steps: S1, establishing and initializing a segment tree structure for a memory to be managed; S2, applying for the memory by a kernel or an application program; and S3, recovering the memory released by the kernel or the application program by a segment tree. Physical memory management is performed by adopting the segment tree mode, thereby ensuring that the provided memory address is in physical continuity, efficiently applying for the memory with the specific physical address without influencing the overall performance, and overcoming the defects that the common memory management is easy to generate memory fragments, the efficiency is low, the continuity of the physical address can not be ensured and the like.

The invention discloses a shield segment structure and a shield tunnel. The shield segment structure comprises a plurality of segments, wherein the segments are defined and spliced to form an integral ring; a cross section of the integral ring is a centrosymmetric and axisymmetric special-shaped face; the special-shaped face is formed by defining eight inferior arcs; the eight inferior arcs are a top inverted arch and a bottom inverted arch which are arranged vertically, oppositely and symmetrically, a left arch and a right arch which are arranged horizontally, oppositely and symmetrically, and four corners respectively; the segments are centrosymmetrically distributed on the integral ring; spliced seams, located on the cross section, of the adjacent segments are staggered with maximum internal force parts of the corners, and symmetry axes; a plurality of shield segment structures are butted to form the shield tunnel; and the spliced seams of the segments of the adjacent shield segment structures are arranged in a staggered manner. The shield segment structure and the shield tunnel can well integrate factors such as transverse internal force distribution of the shield tunnel, and connection of the longitudinal segments, so that the shield segment structure and the shield tunnel have good integrity, high efficiency and implementability.

The invention discloses a non-rolled novel tobacco product containing a tobacco particle material. The product is composed of a cigarette holder segment, a cooling segment and a tobacco particle segment which are sequentially wrapped with a paper hollow tube from a front end to a tail end; a tail end port of the paper empty tube is plugged by a breathable sheet material; the cigarette holder segment and the cooling segment are provided with axial running-through ventilation holes, and the tobacco particle segment is filled with the tobacco particle material. The non-rolled novel tobacco product has the following advantages that the special cigarette holder segment structure is adopted, during use, the paper empty tube can be externally caught, the direct contact with the hard outer wall ofthe paper empty tube is avoided, and the comfort is better; the tobacco particle material is adopted as a smoke releasing material, and the taste is better; a specially-made breathable nano-materialcapable of preventing liquid permeation is adopted as the breathable sheet material, not only can the normal use of heated tobacco be ensured, but also it can be ensured that tobacco liquid does not leak, and the product is safe and reliable.

A method and system of defining a boundary of a part of a blood vessel in an image captured by an ex vivo imager, where such part of the blood vessel is free from iodine-based contrast material.

A foldable stroller includes a frame, a front wheel component, and a rear wheel component; the frame includes side frames symmetrically positioned on the left and right; a multiple of cross bars are connected between the two side frames; the side frame comprises a front wheel support, a rear wheel support and a push-hold rod; the front wheel support is pin-jointed at the rear end with a sliding sleeve, which is sheathed around the rear wheel support, whose front end is rotatably connected with the front end of the push-hold rod through a rotating seat; a front support rod is pin-jointed between foreparts of the front wheel support and the rear wheel support; a rear support rod is pin-jointed between the push-hold rod and the sliding sleeve; when the frame is in an unfolding state, the sliding sleeve moves on the rear wheel support up to the highest position, and is locked by the locking mechanism on the rear wheel support; and the whole frame of the stroller is of a three-segment structure when folded, with a smaller volume after folding that is convenient to place and carry, which is more convenient to use, and improved in safety.

The invention discloses a lining segment structure of city subway up-down section overlapping shield tunnels. The structure can satisfy construction loads such as the weight of a shield tunneling machine, the pressure supplied by the shield tunneling machine and stratum excavation stress relief under construction and structure safety and deformation under the effect of water and soil pressure and subway train loads during operation, satisfy construction performance of secondary slip casting on the back of a lining segment structure wall and synchronous and uniform slip casting of interlayers between the up-down overlapping tunnels, and at last satisfy the waterproofness and durability of tunnel use. The lining segment structure can be applied to V-level and VI-level strata in a city subway, the separation distance of the up-down overlapping section tunnels is 2 m-3 m, the shield excavation order of down first and then up is used for supplying technical assurance to the segment structure of the city subway up-down section overlapping shield tunnels under the conditions of up-down overlapping complex lines, and the section overlapping tunnels can better solve the problems of limit of surrounding environment, narrow boundary lines of roads and requirements for a net operation transfer function and is applied widely.

The invention relates to a shield tunnel segment structure considering municipal cable pipelines and an installing method. According to the adopted technical scheme, pre-buried channels are formed in segments, needing laying of cable supports, in a shield tunnel; the fixed ends on the front sides of cable support rods are fixed to the segments on the side walls through the pre-buried channels, and the rear sides of the cable support rods point to the interior of the tunnel in a jetting-out mode; arc-shaped supports are connected to the rear middle portions of the cable support rods, and the other ends of the arc-shaped supports are connected to a track base; the municipal cable pipelines are placed on the cable support rods. The shield tunnel segment structure has the advantages of achieving the multi-purpose effect and being good in structural performance. The shield tunnel segments, the track base and the supports are pre-manufactured components, and therefore quality is easy to guarantee. The supports and the pre-buried channels are high in strength, resistant to electricity and fire, capable of being produced on a large scale, high in technology reliability, easy to construct and short in construction period.

A multi-use mobile support assembly structured to be selectively used as a walker or a wheelchair including a frame having at least one adjustable frame segment structured to be disposed in either a first orientation or a second orientation. The frame may be foldable and includes at least a first front leg and at least a first rear leg, having wheel assemblies connected thereto for travel of the frame, whether used as a walker or wheelchair, over a different ground or support surfaces. In one embodiment, the first rear leg includes an upper member having a first end a second end and a lower member having a first end and a second end. The first end of the upper member may be pivotally connected to the first end of the lower member, and the lower member is removable with a corresponding wheel assembly or pivotal between an extended use position and a folded storage position.

The invention discloses a topic modeling method based on a selected cell. The method includes extracting words, segment structures and word features contained in searching results in a database according to a query request; determining topics adopted by modeling; producing each segment structure topic, word topic and binary choice through random allocation; determining the variables through the Gibbs sampling process iteratively; feeding significant documents, words of each topic and capacities for words with various features to express the topic of the located segment structure to users according to final allocating results of the variables. The method has the advantages that topic modeling can be performed on various modal data; implicit structural information of the data is utilized fully, and disadvantages due to strong structural constraints are eliminated; information of correlation between the word features and the segment structural constraints can be provided, and the users are assisted to understand the data; the method has good extensibility and can serve as algorithm basis of various applications.

The embodiment of the application discloses a data query method and device of a time interval and an index construction method and device of a time interval. The data query method includes: acquiring a to-be-queried time interval; using the to-be-queried time interval to obtain a first result set of index interval objects in intersection and containing association relationships with the to-be-queried time interval by querying in a first sorted index constructed on the basis of key value pairs of the index interval objects; using the to-be-queried time interval to obtain a second result set of index interval objects in an overlaying association relationship with the to-be-queried time interval by querying in a second segment tree index constructed on the basis of key value pairs of the index interval objects; and combining the first result set of the index interval objects and the second result set of the index interval objects obtained by querying, and then using the combined index interval objects as a query result of the to-be-queried time interval. According to the embodiment of the application, a reverse indexing manner and a segment-tree-type indexing manner are combined, retrieval requirements of the high expansibility and the high concurrency of big data based on a cloud platform can be met, and the retrieval efficiency can also be greatly improved.