923results about How to "Solve the shortage" patented technology

The invention relates to a classroom teaching recording and video-on-demand method and a system thereof and aims at increasing effects of course review and studying consolidation. During a course recording process, through a time stamp identification, recorded classroom teaching data is segmented; each segment of recorded data corresponds to at least one corresponding course key point; according to the course key point, after each segment of data is recorded or a whole course is recorded, a problem corresponding to each course key point is additionally arranged; further, each course key point and after-class homework or each test question of a classroom test are established corresponding associations, and corresponding relations of the course key points, the segmented identification data, problems and test questions are used to construct a corresponding association database so that if a student has a problem when answering each problem or the test questions after watching a segment of content or all the contents of the online video-on-demand recorded course, he/she can realize high-efficiency course review and the studying consolidation of the recorded course only through the corresponding association of the key points and the segmented identification data and only through reviewing the corresponding segment of recorded data.

The invention discloses a face multi-area fusion expression recognition method based on depth learning, which comprises the following steps of detecting a face position with a detection model; obtaining the coordinates of the key points by using the key point model; aligning the eyes according to the key points of the eyes, then aligning the face according to the coordinates of the key points of the whole face, and clipping the face region by affine transformation; cutting the eye and mouth areas of the image to a certain proportion; dividing the convolution neural network into one backbone network and two branch networks; carrying out the feature fusion in the last convolution layer, and finally obtaining the expression classification results by the classifier. The method of the inventionutilizes the priori information, besides the whole face, the eyes and mouth regions are also used as the input of the network, and the network can learn the whole semantic features of facial expressions and the local features of facial expressions through model fusion, so that the method simplifies the difficulty of facial expression recognition, reduces the external noise, and has strong robustness, high accuracy, low complexity of the algorithm and so on.

The invention discloses a combined cold heat and power supply microgrid multi-objective dynamic optimal operation method; characteristics of translatable electrical load are firstly considered in an optimization process, then schedulability of source side and energy storage system are considered, contribution in each period in three kinds of controllable units serves as optimization variables, minimum system operation cost and minimum pollutant emission control expense serve as optimal operation targets, and a mathematical model of current multi-objective optimal operation problem is established; an excellent particles leading multi-objective particle swarm optimization algorithm is adopted to solve the optimization problem, that is, a single objective genetic algorithm is utilized to respectively find two points including minimum system operation cost and minimum pollutant emission control expense, and the two points serving as excellent particles is utilized to lead an optimal direction of the multi-objective particle swarm algorithm; the invention provides an effective multi-objective dynamic optimal operation method, and the method is significant for improving energy source comprehensive utilization efficiency of a multiple energy coupled system and promoting renewable energy source development.

The present invention provides undifferentiated human embryonic stem cells, methods of cultivation and propagation and production of differentiated cells. In particular it relates to the production of human ES cells capable of yielding somatic differentiated cells in vitro, and committed progenitor cells such as neural progenitor cells capable of giving rise to mature somatic cells including neural cells and/or glial cells and uses thereof. The invention also provides methods that generate in vitro and in vivo models of controlled differentiation of ES cells towards the neural lineage. The model and the cells generated along the pathway of neural differentiation may be used for the study of the cellular and molecular biology of human neural development, for the discovery of genes, growth factors, and differentiation factors that play a role in neural differentiation and regeneration, for drug discovery and for the development of screening assays for teratogenic, toxic and neuroprotective effects.

The invention discloses a method for cultivating white mushrooms by straw mushroom waste. The method comprises the following steps of: determining components of a culture medium, building a heap, performing primary fermentation, performing secondary fermentation, sowing, cultivating to grow mushrooms, managing the growing mushrooms and picking the mushrooms. The straw mushroom waste used for the culture medium takes the place of straw and cow dung stack retting. According to the method for cultivating the white mushrooms by the straw mushroom waste, the problems that the culture medium is lacking in raw material and high in cost and is limited by regions are solved; the utilization value of the straw mushroom waste is improved; the cultivation cost of the white mushrooms is reduced; the yield of the white mushrooms is improved; and the problems that the straw and the cow dung stack retting cannot be easily turned when being fermented, the operation labor strength is high, and the fermentation is not time-saving and labor-saving are solved.

The invention relates to the field of plant protection and the technology of insect cultivation, and in particular relates to a method for breeding frankliniella occidentalis by using water planting soya bean seedlings as fodder. According to the conventional method, kidney beans are used as the fodder, while the soya bean seedlings are used for feeding the frankliniella occidentalis according to the method, and therefore, the defect of feeding the frankliniella occidentalis caused by the problem of the fodder per se is changed. As the water planting soya bean seedlings have a short growth cycle, a low production environment requirement and low production cost and can be supplied throughout the year, according to the method for breeding the frankliniella occidentalis, the fodder basis for feeding the frankliniella occidentalis in a large scale can be provided and an excellent feeding effect can be realized.

The present invention relates to composite hydrogels comprising at least one non-peptidic polymer and at least one peptide having the general formula: Z—(X)_m—(Y)_n—Z′_p, wherein Z is an N-terminal protecting group; X is, at each occurrence, independently selected from an aliphatic amino acid, an aliphatic amino acid derivative and a glycine; Y is, at each occurrence, independently selected from a polar amino acid and a polar amino acid derivative; Z′ is a C-terminal protecting group; m is an integer selected from 2 to 6; n is selected from 1 or 2; and p is selected from 0 or 1. The present invention further relates to methods of producing the composite hydrogels, to uses of the composite hydrogels for the delivery of drugs and other bioactive agents/moieties, as an implant or injectable agent that facilitates tissue regeneration, and as a topical agent for wound healing. The present invention further relates to devices and pharmaceutical or cosmetic compositions comprising the composite hydrogels and to medical uses of the composite hydrogels.

The invention provides a wind turbine generator health management method based on machine learning algorithm platform. The health management method includes: theoretical power generation balance analysis, performance grade evaluation, fault diagnosis model and health management model design, health evaluation and health analysis, health management is the realization of condition-based maintenance.According to the deep application of the theoretical electric quantity balance analysis method, Combining Big Data Technology, through the combination of machine learning and artificial intelligence,to realize the prediction and evaluation of the health status of the fan and its accessories and main equipment, finally, the maintenance mode of wind turbine generator system is transited from planned maintenance and fixed maintenance to condition-based maintenance, so as to reduce the power loss of planned maintenance, unplanned maintenance and performance loss of wind turbine generator system,so as to achieve the goal of increasing the power generation of wind farm station and improving the economic benefit of wind farm station.

The invention relates to a method for assessing a tide energy resource through a numerical simulation of sea model. The technological steps are as follows: a target sea area is selected; sea chart splicing work of the target sea area is completed, and a high-precision terrain data product of the target sea area is manufactured; water depth terrain data measured through a field investigation are combined with satellite data, so that water depth terrain data of the target sea area are obtained; non- structural grid is performed on a calculation area of the target sea area, and the sea model is constructed; number value simulation calculation is performed with the sea model; a simulation calculation result and actually measured data are compared and verified; the energy flow density is calculated; the standing stock is calculated by selecting a section with a larger energy flow density; the developable tide energy power and the resource category are acquired according to the obtained standing stock; and an assessment result is displayed through a visualization technology. The method provides an important way for accurately assessing the tide energy level of the target sea area and solving the problem that the energy in coastal and sea island areas of our country is short.

The invention provides a random access method, comprising that receiving an ascending pilot code sent from terminal, confirming the type of the received code, when the code is strengthen random access pilot code, sending a strengthen quick physical access channel message to the terminal, when the code is common random access pilot code, sending a common quick physical access channel message to the terminal. The invention can reduce the impact possibility between strengthen random access and common random access when processes random access, and reduce calculation. The inventive also provides an expansion method of pilot code, which rotates the pilot code to obtain an expanded pilot code, while part bits of the expanded pilot code can be turned further. Via the expansion of the pilot code, the invention can confirm the system can easily extinguish terminal access type at the start of terminal access, to reduce system consumption of whole access.

The invention relates to realization method for communication between IPv4 net and IPv6 net. When node of IPv4 communicate to node of IPv6, converses the objective address according to IPv4 address and corresponding port number, and realizes communication between node of IPv4 aforementioned and node of IPv6. Thereby, the invention is that when node of IPv4 communicate to node of IPv6, corresponding multiple objective IPv6 address can be mapped to a IPv4 address simultaneously based on corresponding port number, realizes the good use of IPv4 address during the address mapping process, solves the short problem of IPv4 address, saves efficiently the utilization of IPv4 address; besides, the invention has the advantage of realization process simple.

A method and an apparatus are provided which enable a local system using a link local address to communicate with an external system. The local system can communicate with the external system by using a MAC address of a router found through an ARP packet. The local system transfers an ARP packet for the external system to a sub network by designating an IP address of a default gateway as an IP address of the local system.

A method for somatic cell embryo generation and plant regeneration of a hybrid of a slash pine and a Caribbean pine is characterized in that the invention relates to a method which adopts a immature zygotic embryos of the hybrid of the slash pine and the Caribbean pine to carry out somatic cell embryo generation and plant regeneration and uses liquid and slide improved P6 mediums to alternatively combine for adjustment and control culture during the process of the somatic cell embryo generation and plant regeneration for a plurality of times and is appended with proper auxin combination. The invention provides a packaged technology for fast breeding the hybrid seedlings of the slash pine and the Caribbean pine industrializedly and can solve the current problem of short supply of the seedlings during the hybrid afforestation of the slash pin and the Caribbean pine.

The invention discloses a method for building a leaf in vitro regeneration system of begonia rex. The method comprises the following steps of: (1) selecting an explant and sterilizing the explant; (2) carrying out adventitious bud induced cultivation after cutting the processed leaves; (3) carrying out high-voltage electrostatic field treatment; (4) carrying out subculture proliferation cultivation on the adventitious bud induced by the leaves; (5) carrying out rooting culturing on a test-tube plantlet after the subculture proliferation cultivation; and (6) cutting and rooting. The begonia rex is subjected to tissue culturing by adopting the propagation method; the reproduction rate of a culturing period (51d) is 243.1 times; the propagation speed is fast; and the problem of seeding propagation of the begonia rex is effectively solved.

The invention relates to a method for culturing finless eel and freshwater crayfish in a pond, which includes (1) selecting pond or low-level pond, or opening ditches such as 'curve', 'well' or 'field' font, keeping sluice above 1.5m in the pond or ditch; (2) clearing and sterilizing the pond, keeping the water depth for 30cm, fertilizing and planting aquatic; (3)the net box of finless eel being an open style, planting water peanut in the box; (4) regulating water quality by stocking silver carp and bighead carp, putting healthy fingerlings of the freshwater crayfish one off in the last decades of April (100kg/666m²), or putting mature fingerlings of the freshwater crayfish whose female and male ratio is 2:1 in the autumn; (5) stocking young finless eels from the last ten-day of April to the first ten-day of May or the last decades of July (1kg/ m²); (6) feeding food per day, the amount of which are 5-8% of the weight of freshwater crayfish; (7)subduing feeds after young finless eels are put in the box and hungry for 3 days, the weight ratio of minced earthworm or fresh fish and finless eel is 5:1, 4:1, 3:1 and 2:1; (8) strengthening water quality management, fertilizing management and prophylaxis osamu work of the aquaculture water and inside the net box.