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641 results about "Land use" patented technology

Land use involves the management and modification of natural environment or wilderness into built environment such as settlements and semi-natural habitats such as arable fields, pastures, and managed woods. Land use by humans has a long history, first emerging more than 10,000 years ago. It also has been defined as "the total of arrangements, activities, and inputs that people undertake in a certain land cover type."

Computer based system to generate data for implementing regional and metropolitan economic, land use and transportation planning

The present invention comprises a method for forecasting future economic conditions, land utilization and transportation network utilization and performance of a metropolitan area having a plurality of economic zones, the method includes the steps of: a) receiving a set of calibration values from a first input device; b) calculating a set of calibration constants with a first arithmetic logic unit; c) receiving a set of initial values for a set of desired outputs from a second input device, wherein the set of desired outputs includes regional economic, land use and transportation outputs; d) calculating the regional economic and land use outputs with a second arithmetic logic unit, wherein the regional economic and land use outputs include a first group of variable travel demands; e) calculating an origin to destination matrix with a third arithmetic logic unit, wherein the origin to destination matrix includes two-way daily person trips between an origin economic zone and a destination economic zone; f) calculating the transportation outputs with a fourth arithmetic logic unit, wherein the transportation outputs include a second group of variable travel demands; h) repeating steps d) through f) until the first group of variable travel demands is substantially the same as the second group of variable travel demands; and, g) providing the set of desired outputs to an output device.
Owner:ANAS ALEX

Construction method for enhancing extraction effect of ground coal bed gas

The invention relates to a construction method for enhancing the extraction effect of a ground coal bed gas, comprising the following steps of: (1) constructing a vertical cave well, forging caves on coal beds with coal bed gases needed to extract, and placing fiberglass casings into the caves; (2) constructing a vertical well section and a lower branched main horizontal well hole of a horizontal well, respectively forwards constructing the lower branched main horizontal well hole and a horizontal branched well hole positioned in front of a lower branched cave after butting with the vertical cave well, returning to a position nearby the rear end of the vertical cave well and then constructing a horizontal branched well hole positioned at the rear of the lower branched cave; (3) after a lower branched well hole is constructed, carrying out side drilling to construct an upper branched well hole; (4) after an uppermost branched well hole is constructed, plugging inclined well sections of main horizontal well holes inside the horizontal well from a side drilling windowing point to a coal seeing point by using cementing cement; (5) drilling and flushing the vertical cave well, installing discharge and extraction equipment, and extracting the coal bed gas by discharging water and reducing pressure on the ground. The invention can shorten the construction period, reduce the construction and production cost, decrease the lands used for construction and extraction and enhance the extraction effect of the ground coal bed gas.
Owner:XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP

Method for classifying multi-spectral remote sensing data land use based on semi-supervisor manifold learning

InactiveCN102129571ALow costRealize Land Use ClassificationCharacter and pattern recognitionHat matrixSensing data
The invention discloses a method for classifying multi-spectral remote sensing data land use based on semi-supervisor manifold learning, relating to a land use classification method. The method comprises the following steps of: taking the multi-spectral remote sensing data as a sample data set according to a wave band generator matrix of the data; selecting a part of sample data from the sample data set, marking sample class labels according to priori knowledge, and randomly selecting a part of sample data as unmarked data from the sample data set; establishing a similarity graph and a difference graph to measure the similarity and the difference of data points, and calculating a weight matrix; calculating according to an optimal target function to obtain a projection matrix; projecting the whole multi-spectral remote sensing data; and executing the land use classification by using a K-adjacent classification algorithm. The invention adds the randomly selected unmarked sample data by utilizing a semi-supervisor manifold learning method, calculates the projection matrix by the optimal target function so as to increase the precision of the land use classification and effectively saves the cost of marking the training sample classes at the same time.
Owner:CHONGQING UNIV

Safety assessment system for river water environment of plain river network

The invention discloses a safety assessment system for a river water environment of a plain river network, and belongs to the field of water environment safety assessment. By taking a DPSIR model as a theoretical basis, water environment safety assessment indexes are divided into five aspects of social and economic driving force, a pollution source and water resource development pressure, a water environment health present condition, a river service function and an environment supervision capability, and twenty assessment indexes including permanent population density, GDP per capita, a building land use proportion and the like are established. The water environment safety assessment process comprises the specific steps of obtaining a survey value for assessing an index of each layer of a river; determining an assessment standard value of the index; performing standardization processing of the survey value of the index; calculating an index score of a river water environment safety assessment index layer; calculating an index score of a river water environment safety assessment criterion layer; and calculating and assessing a river water environment safety index. According to the system, a scientific assessment method is established for the plain river network, and the water environment safety condition and problem of the plain river network can be quickly and effectively identified.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

Domestic waste comprehensive treatment technology based on the pre-processing

A technology based on the household garbage of the biology pretreatment, belongs to the environmental protection technical field, which is characterized by including a garbage manual presorting, the biology pretreatment, the garbage compost and the refuse burning technology. After the household garbage is sorted manually, the garbage is divided into four kinds: the tile stone component is used for roadbuilding or filling the pit, the recoverable component is reclaimed to use; the hazardous waste is sent to the hazardous waste disposal work for centralized disposition; after the residual garbage processes the biology pretreatment, and is sorted into the biodegradable component and the combustible constituent by the machine, while the biodegradable component processes the land use after composting, and the combustible constituent is fired for process. The effect and the benefit of the invention are to make the domestic garbage for a rational utilization after sorting, without processing the percolate and setting the sanitary landfill field. The invention realizes the 'innocuity, decrement, resource', reduces the cost of investment and the operating cost, which accords with the situation of China, and a reliable and effective household garbage comprehensive approach.
Owner:DALIAN UNIV OF TECH

Quantitative analysis method for river runoff change caused by climate change and human activity

The invention discloses a quantitative analysis method for river runoff change caused by climate change and human activities. The method comprises the steps of collecting hydrological and meteorological information, water resource evaluation data and human activity information in a basin, judging a mutation point of an annual runoff process, wherein the part before the mutation point is a natural stage of the basin and the part after the mutation point is an influence stage of the basin, the entire natural runoff sequence is reconstructed by using the hydrological and meteorological information of the natural stage, using hydrological model rating model parameters and then using meteorological information of the whole period, and analyzing the contribution of climate change and human activities to the river runoff change by using the difference between the reconstructed natural runoff and the actually measured runoff. By adopting the quantitative analysis method for river runoff change caused by climate change and human activities, in combination with situations such as hydrological and meteorological factor changes, land use changes and water use in the basin, the binary attribution analysis of the river runoff change caused by climate change and human activities is extended to quaternary attribution analysis of the river runoff change caused by rainfall change, climate change, land use change and water use.
Owner:NANJING HYDRAULIC RES INST
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