242results about How to "Balance cost" patented technology

The present invention provides a novel method for culturing cells as well as a novel method for producing a recombinant protein by culturing cells at large scale (up to 1,500 L nominal volume and 750 L working volume), whereby an inflated bag provides a sterile, disposable cultivation chamber. The inflated bag is partially filled with liquid cultivation media and cells, and placed into a containment vessel. The containment vessel is positioned onto an orbitally shaken platform. The orbital shaking moves the containment vessel and thus the bag and induces thereby motion to the liquid contained therein (“shake mixing”). This motion (caused by orbital shaking) induces a dynamic force field that ensures cell suspension, bulk mixing, and oxygen transfer from the liquid surface to the respiring cells without damaging shear or foam generation.

The invention belongs to the technical field of lenses, particularly to a high-definition super wide angle prime lens which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from the object space to the image space, wherein the fourth lens and the fifth lens adopt plastic aspherical lenses; the first lens, the second lens, the third lens and the sixth lens are glass spherical lenses; the first lens is a convex-concave negative focal power lens; the second lens is a bi-concave negative focal power lens; the third lens is a bi-convex positive focal power lens; the fourth lens is a bi-convex positive focal power lens; the fifth lens is a bi-concave negative focal power lens; the sixth lens is a bi-convex positive focal power lens. According to the high-definition super wide angle prime lens, glass lenses and plastic lenses are reasonably combined, so that a large aperture is realized, the imaging quality is good, 4 megapixel can be realized under the precondition that infrared does not focus again, and clear and bright monitoring pictures can be realized even at night with a low illumination level; the lens has a temperature compensation function, and can be used at the temperature of minus 30 DEG C-80 DEG C without being out of focus.

The invention provides an intelligent identity authentication system. The intelligent identity authentication system comprises an authentication client SDK, an authentication server SDK, an authentication service proxy device, an authentication server, an authentication analysis engine and a cloud service platform, wherein the authentication client SDK is used for acquiring client information of authenticated users; the authentication server SDK is used for checking service strategies, and executing and forwarding information of an authentication client; the authentication service proxy device is used for providing a server reverse proxy when the authentication server SDK cannot implement an authentication function; the authentication server is used for managing the service strategies, authentication modes and cases, and displaying authentication analysis results; the authentication analysis engine is used for performing risk analysis based on a risk control model, wherein the risk analysis includes the steps of performing risk level scoring based on predefined rules and implementing big data analysis in combination with a big data analysis engine; and the cloud service platform dynamically adjusts identity authentication modes and requirements according to risk analysis results of the authentication server and the authentication analysis engine, performs identity authentication for the users, and returns an authentication result to the authentication analysis engine. According to the intelligent identity authentication system provided by the invention, an appropriate identity authentication mode can be selected for the users based on a risk analysis method.

The invention discloses a flame-retardant high temperature-resistant epoxy resin composition capable of being used for pultrusion and a preparation method thereof. The flame-retardant high temperature-resistant epoxy resin composition capable of being used for pultrusion comprises three components of A, B, and C, and is characterized in that the A component comprises diglycidyl ether epoxy resin, cycloaliphatic epoxy resin and an epoxy resin active diluents; the B component comprises cycloaliphatic acid anhydride, arene poly(acid anhydride), a thermoplastic phenolic resin curing agent, a maleic anhydride-grafted rubber flexibilizer, a polysiloxane toughening modifier, and an epoxy resin curing accelerator; the C component comprises an inorganic fire retardant which has an ultrafine particle size and is subjected to surface modification by a silane coupling agent and a hydrophobic modifier; the weight ratio of the A, B, and C components is that A:B:C=100:50-250:20-150.

The embodiment of the invention provides a dynamic service migration method and device, and the method comprises the steps: obtaining the probability that a target mobile user moves from the coveragerange of a first edge server to the coverage range of a second edge server according to the moving state of the target mobile user located at the boundary of the first edge server; obtaining the totalmigration cost required for moving the service corresponding to the target mobile user from the first edge server to the coverage range of the second edge server; and constructing a Markov decision process according to the probability and the total migration cost, and iteratively solving a linear equation corresponding to the Markov decision process to obtain a corresponding target dynamic service migration strategy. According to the invention, on the basis of effectively reducing the transmission delay in dynamic communication service migration, the migration data cost can be effectively balanced, so that a more preferable service migration decision can be provided, namely, the accuracy and reliability of dynamic communication service migration of a moving user can be effectively improved.

The invention provides a block chain-based multi-granularity data processing method, system and device, and a storage medium. The method comprises the following steps of receiving stored business databy a block chain node, and determining a data attribute of the business data; if the data attribute of the business data is a rich text type, storing the data in the block chain node; if the data attribute of the business data is a picture type, storing the data in a private storage cloud, and creating second navigation information of a storage path of the business data of the picture type in theprivate storage cloud by the block chain node; and if the data attribute of the business data is a video type, storing the data in a public storage cloud, and creating third navigation information ofa storage path of the business data of the video type in the public storage cloud by the block chain node. A multi-granularity non-structured data trusted storage scheme is introduced for data processing granularity through automatic judgment of the data type, thereby achieving balance between security and performance or expense.

The invention provides an MMC-based multi-port hybrid power electronic transformer and a control method thereof. The power electronic transformer comprises a multi-winding transformer, a hybrid MMC converter, an LC filter, a direct-current output port and the like; the multi-winding transformer is a three-phase transformer, and comprises a primary winding and secondary windings a and b; the hybrid MMC converter is a back-to-back structure, and comprises a hybrid MMC structured AC/DC converter and a hybrid MMC structured DC/AC converter; the AC/DC converter and the DC/AC converter are connected through a direct-current side; and the direct-current side is leaded out, and can be used as a direct-current input/output port. The hybrid power electronic transformer provided by the invention comprises the traditional power transformer and the power electronic transformer, and integrates the advantages of the two; balance between the equipment effect and the cost is realized; the device comprises the direct-current port, so that access of a new energy, an energy storage unit and the like is convenient; furthermore, the device can realize reactive power compensation and dynamic voltage restorer at the same time; the electric energy quality of a power grid is further improved; individual-phase control is adopted in the control strategy aspect; and thus, the control strategy flexibility is improved.

The invention discloses an energy storage capacity optimization method of a large-scale wind farm considering auxiliary service compensation, and relates to the energy storage capacity optimization method field of the wind farm. The method includes: S1, after quantifying the mitigation degree of the auxiliary service cost of the system, taking the auxiliary service compensation as the auxiliary service compensation, and calculating the wind storage combined operation income according to the economic benefit of the wind storage and the wind farm configuration energy storage; S2: Updating the BESS constraint adapted to the dispatching plan after the energy storage provides the reserve for the uncertainty of the wind power; S3: combining BESS constraint with other constraint to construct constraint set, and obtaining the objective function by maximizing revenue, constructing the wind farm energy storage capacity optimization model according to the them. S4, solving the collected power system parameter input model to obtain the optimal capacity; The invention solves the problems that the energy storage capacity optimization of the existing wind farm does not consider the auxiliary service compensation, which leads to the low combined operation income of the wind farm and the low enthusiasm of the wind farm for allocating energy storage, and achieves the effect of effectively encouraging the wind farm to allocate energy storage and realizing the friendly grid-connected absorption of the wind power.

An optical unit for an optical symbol reader comprises an optical scanner for scanning an optical symbol with the laser beam emitted by a light source, by angularly oscillating a reflection face for reflecting the laser beam owing to an electromagnetic force. The optical scanner comprises a loose bearing structure having a shaft and a bearing bore and supporting a rotor having the reflection face to angularly oscillate freely with respect to a base. A certain bearing gap is formed between an outer diameter of the shaft and an inner diameter of the bearing bore. The optical scanner further comprises a coil spring resiliently for urging the rotor in a predetermined direction so that a part of an outer circumferential face of the shaft may be contacted with an inner circumferential face of a bearing bore.

The invention discloses a network-on-chip system for a layered MCC. Computing resource units are connected with router nodes to provide resources such as data of the router nodes during computing; the router nodes turn into an annular topological structure through coordination connection to form into a first layer for a MCC network-on-chip system; the first layer is used for enhancing local characteristics and performance of the network-on-chip system; and the router nodes and super nodes are combined to form into the super nodes which are used for forming into a two-dimensional Mesh topological structure which is simple in structure and low in network cost and has planarity, regularity and good expansibility. According to a MCC interconnection network, a certainty shortest path router is utilized; average communication delay, average handling capacity and link utilization rate are analyzed and simulated; a result indicates that the MCC is good in network performance in light loading or local communication; FPGA indicates that the MCC interconnection network which is simple and efficient is low in network cost; and the network performance and cost are well balanced.

The invention discloses a method and a system for adjusting a discontinuous receiving cycle length. According to the method for adjusting the discontinuous receiving cycle length, user terminals in an RRC (radio resource control) idle state transmit random access requests to a base station, the base station transmits random access responses to the user terminals and counts the number N_rach of the user terminals transmitting the random access requests at preset time intervals, the user terminals are in RRC connection with the base station according to the random access responses, a current state is modified into an RRC connecting state, the base station counts the number N_con of the user terminals in the RRC connecting state at the preset time intervals, and the discontinuous receiving cycle length of each user terminal is adjusted according to the N_rach and the N_con. Signaling overheads of a PUCCH (physical uplink control channel) and a PRACH (physical random access channel) are represented by the N_rach and the N_con respectively and accordingly can be automatically traced, increase of the signaling overheads is effectively balanced without affecting reduction of energy consumption of the terminals, and the use ratio of system resources is increased.

The present invention discloses an ethylene oligomerization method, wherein ethylene is subjected to an oligomerization reaction in a reaction system containing an isobutyryl substituted 1,10-phenanthroline aminal iron (II) complex coordination compound main catalyst represented by a formula (I), an aluminum-containing assisted catalyst, water and a solvent, and the solvent is alpha-olefin of Cn (n is more than 4 and is less than or equal to 10), wherein in the formula (I), R1-R5 are respectively and independently selected from hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy and nitro. According to the present invention, the technical prejudice is overcome, the oligomerization process is optimized, the oligomerization activity is high, and advantages of rapid ethylene oligomerization reaction process initiation, stable operation, low toxicity, environmental protection, good catalytic effect and cost balancing, and strong practicality; and the ethylene oligomerization reaction cost is substantially reduced, the catalysis effect and the production cost are comprehensively considered, and the industrialization prospects are broad.

The invention provides a multifactor-based wireless sensor network trust management model. The model is formed by a trust value computing layer, a trust value management layer and a trust value application layer. The trust value computing layer is basic and includes node direct trust value computing, bad cooperation value computing and energy factor computing. The trust value management layer is a core and comprises cooperation log sheet management, trust value management between nodes, node trust value initialization and trust value update. The trust value application layer is a purpose and comprises malicious node identification, credible node confirmation, low-energy node identification and credible route selection. The model is used for carrying out estimation on the trust value of nodes according to cooperation information between the nodes so as to rapidly identify malicious nodes in the network, balance expense of the nodes in the network and reduce unnecessary resource losses. Consequently, the problem of information leakage caused by internal nodes captured is avoided, and reliable, safe and continuous running of a wireless sensor network is guaranteed.

The invention provides an ethylene oligomerization catalyst composition. The ethylene oligomerization catalyst composition comprises a main catalyst of a 1, 10-phenanthroline amino-iron (II) complex which is substituted by propionyl in a formula (I) and a catalyst promoter of triethyl aluminum, wherein the molar ratio of the metallic aluminium of the catalyst promoter to the central metallic aluminium of the main catalyst is between 30 and 900. According to the ethylene oligomerization catalyst composition, the triethyl aluminum which is used as the catalyst promoter is low in price and only accounts for a small percentage of the price of methylaluminoxane, and the usage of the catalyst promoter is greatly reduced, the catalyst has good catalytic activity of catalyzing ethylene oligomerization, so that the ethylene oligomerization reaction cost is greatly lowered; the selectivity of linear alpha-olefin in an oligomerization product is high; the oligomerization product is distributed reasonably; polyvinyl cannot be generated; and thus, the ethylene oligomerization catalyst composition has a wide industrial prospect.

This invention discloses a channel estimation method and a channel estimation apparatus. The channel estimation method comprises following steps: Firstly, a plurality of symbols is received from a channel. Then, channel frequency responses on the pilot symbols are estimated. Next, linear interpolation is performed in time direction. Next, channel attribute of whether the channel is time invariant or time variant is determined according to the amplitudes of a series of continuous pilot symbols. Therefore, estimated channel frequency responses is passed into a filter when the channel is determined as time invariant, and finally, linear interpolation in frequency direction is performed to obtain a two dimensional channel frequency response in both time direction and frequency direction. When the method estimates that the channel is time invariant, through utilizing IIR filter to filter the high frequency noise prior to executing linear interpolation in frequency direction, thereby achieving better channel estimation results.

The invention discloses a method for oligomerization of ethylene. The ethylene is subjected to oligomerization in a reaction system containing a primary catalyst, an aluminum-containing cocatalyst, water and an organic solvent, wherein the primary catalyst is a complex of 2-acetyl-1,10-phenanthroline (2,6-diisopropylanil)FeCl2, the formula (I) of the complex is as shown in the specification, the organic solvent is the alpha-olefin of Cn (n is more than 4 and less than or equal to 10), and in the chemical formula, R1-R5 are independently selected from hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy and nitryl. The method disclosed by the invention has the advantages that the technical prejudice can be overcome, the process for oligomerization of ethylene can be optimized, the ethylene has high oligomerization activity, the oligomerization of ethylene can be initiated rapidly and operated stably and is hypo-toxic and environment-friendly, the catalytic effect and the production cost can be comprehensively considered and well balanced and the oligomerization cost of ethylene can be reduced greatly. In addition, the method disclosed by the invention is highly practical and has a broad industrial prospect.

The invention provides a virtual number call method, device and system, a piece of electronic equipment and a storage medium. The virtual number call method includes the following steps: a voice signaling gateway receives a call request of a calling terminal based on a called virtual number, and forwards the call request to an IVR platform; the IVR platform obtains the calling original number of the calling terminal according to the call request, and sends at least the calling original number and the called virtual number to a middleware; the middleware requests a binding relation database toquery a called original number associated with the called virtual number and a calling virtual number associated with the calling original number, and returns the called original number and the calling virtual number to the IVR platform; and the IVR platform establishes a call based on the called original number, and sends the calling virtual number to a called terminal for display. The virtual number call method and device provided by the invention take into account compatibility, ease of use and cost requirement.

The invention discloses an event-driven wireless sensor network clustering routing method. The method comprises the following steps: establishing a clustering network; constructing a multi-hop transmission link; guiding link search by adopting an estimation cost function, and obtaining a minimum transmission cost link; optimizing the link so as to reduce the link overhead of the link and obtain the minimum link overhead; in the data transmission stage, grading and gathering data importance to a cluster head, and performing emergency judgment at the cluster head end by adopting a sequential method; taking the link with the minimum transmission cost after optimization as a preferred link for data transmission, and sequentially transmitting the data from high to low according to the emergencydegree. The invention also discloses a network clustering routing system. The method has the advantages that the defects of network congestion, increase of node monitoring and processing expenditure,increase of implementation complexity and the like of a packet loss retransmission method in the prior art are overcome. The multi-path redundant transmission method has the advantages that the datatransmission quantity is increased, the congestion of the whole network is easy to form, the transmission cost ratio is low and the like.

The invention discloses a method for manufacturing a [mu]26 composite magnetic powder core. The technical scheme is as follows: after two or more alloy powders from mechanically crushed sendust, aerosolized sendust, aerosolized iron-silicon, aerosolized iron-nickel and aerosolized iron-nickel-molybdenum are selected and are fully mixed, phosphoric acid passivation treatment and drying are performed, then one or more from silicon oxide, aluminum oxide, calcium oxide and magnesia calcinata, sodium silicate, and deionized water are successively added to the alloy powders subjected to the passivation processing and drying for insulation coating, and afterwards, the [mu]26 composite magnetic powder core is prepared after press molding, heat treatment and surface coating. The alloy powders used in the method have the advantages of mature technology, stable performance and relatively low cost so that the prepared magnetic powder core has quite high cost performance and stability. Such oxides as the silicon oxide, the aluminum oxide, the magnesia calcinata and the like and such inorganic materials as the sodium silicate and the like are used for coating adhesion so that the obtained composite magnetic powder core has the advantages of high stability, high reliability, low cost, high safety and facilitated production.

The invention discloses a double-layer flexible windproof net, which relates to the technical field of windproof nets and comprises column structures and a net structure mounted on the column structures. Each column structure comprises a member in a conical member structure big end down, the longitudinal section of each conical member is in the shape of an isosceles trapezoid, the top of the isosceles trapezoid is smaller than the base thereof, and the cross section of each conical member is regularly polygonal. The net structure includes two structures which are a windproof net and a support net respectively disposed along the wind direction. Each of the windproof net and the support net is composed of a plurality of mesh units. The diameter of an inscribed circle of each windproof net mesh unit is smaller than that of an inscribed circle of each support net mesh unit. The net structure is hooked on an upper support rope and a lower support rope. Using the double-layer flexible windproof net well solves the problems that the existing windproof net in a single-layer net structure is poor in wind proofing effect, existing columns have high wind resistance and are easy to break to disable the windproof net, and vehicle running safety under severe conditions, strong wind and storm, cannot be guaranteed.

The invention discloses an attack detection rule opening method, and equipment. The method includes the steps that network equipment determines whether a current opened attack detection rule has a corresponding trigger opening rule set when flows are made to match the current opened attack detection rule; the network equipment obtains a rule identification in the trigger opening rule set if the current opened attack detection rule has a corresponding trigger opening rule set; and when the default state of the attack detection rule corresponding to the rule identification is a non-set state and the intelligent state of the attack detection rule corresponding to the rule identification is a non-set state or a closed state, the network equipment starts the attack detection rule corresponding to the rule identification, and modifies the intelligent state of the attack detection rule corresponding to the rule identification to be an opening state. According to the embodiment of the invention, the cost and the security of the network equipment can be as balanced as possible.