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143 results about "Normalized test" patented technology

Portal assessment design system for educational testing

InactiveUS20050170325A1Vehicle can be poweredEasy to createElectrical appliancesTeaching apparatusDomain analysisDesign assessment
A Portal Assessment Design System includes a system for designing assessment models and assessments (e.g., standardized tests). In assessment design, specifications are organized around three basic elements: 1) what knowledge, skill or abilities are important to measure; 2) what is necessary evidence of that knowledge, skill or ability; 3) what performance situations are needed to elicit the required evidence from students and other assessment users. The system includes three modules (i.e., Domain Analysis, Domain Modeling, Conceptual Assessment Framework), each of which targets a specific phase of the design process, for designing an assessment in accordance with the three basic elements. The sequence of modules represents the structure of a design process that helps assessment developers work through successive stages or phases of assessment design, from the gathering of raw information to the creation of a complete set of specifications for an assessment product. Each module has its own set of objects for organizing information, such as knowledge skills and abilities of interest of the students being tested, evidence of these, and situations structured to elicit this evidence. The modules and objects of the system are implemented as a software application executing in a client-server environment.
Owner:EDUCATIONS TESTIG SERVICE

Method for realizing operating state analysis and fault diagnosis of photovoltaic array based on density-based clustering algorithm

The invention relates to a method for realizing operating state analysis and fault diagnosis of a photovoltaic array based on a density-based clustering algorithm. The method comprises the following steps: firstly collecting a plurality of electrical parameters of a maximum power point of a photovoltaic power generation array during daily work so as to obtain an electrical parameter sample combination per day; normalizing the electrical parameter samples so as to obtain a test sample combination; calculating the normalized test sample combination so as to obtain a distance matrix; automatically clustering the test samples by adopting the density-based clustering algorithm so as to obtain a plurality of clusters; respectively calculating the minimum distance between each group of reference data and each cluster based on reference data obtained by a simulation model in advance so as to form a distance vector; and finally, comparing each element in the distance vector with a cutoff distance in the clustering algorithm, and identifying a work type to which each cluster belongs. According to the method disclosed by the invention, accurate fault diagnosis can be directly realized by clustering the daily operation data of the photovoltaic system.
Owner:FUZHOU UNIV

SAR?target variant recognition?method based on multi-information joint dynamic sparse representation

The invention discloses an SAR?target variant recognition?method based on multi-information joint dynamic sparse representation. The method comprises steps: (1) a target training?dictionary with respect to?image?domain target amplitude?information represented by the formula, a shadow?training dictionary with respect to?image?domain target shadow?information represented by the formula and a?frequency domain training dictionary with respect to?frequency domain target amplitude?information represented by the formula are built with an original SAR image of a training sample as the basis, and a multi-information training dictionary D is jointed; (2) a normalized test?target vector shown in the description, a normalized test?shadow vector shown in the description and a normalized frequency domain test?target vector shown in the description are built with an SAR image of a test sample as the basis, and a multi-information test matrix Y shown in the description is obtained after jointing; (3) according to the multi-information training dictionary D and the multi-information test matrix Y, a joint sparse formula is built and a joint sparse coefficient matrix X is solved; and (4) the test sample is restructured by using the obtained joint sparse coefficient matrix X and the final classification result is obtained according to the reconstruction error?minimization principle.
Owner:XIDIAN UNIV

Method for obtaining optimal solid density for coated paper printing

The invention discloses a method for obtaining the optimal solid density for coated paper printing. The method comprises the steps that 1, a CTP process control system is built, and the CTP device calibration work is finished; 2, a printer process control system is built, and the printer device calibration work is finished; 3, a printing test standard version is designed, a printing test is conducted through a standardized test method, and standard test specimen page is obtained; 4, data measurement is conducted on the density and chromaticity parameters of the specimen page; 5, according to the measured result, the optimal solid density for coated paper printing is calculated and obtained. According to the method for obtaining the optimal solid density for coated paper printing, on the basis of calibrating a CTP and a printer, the printing test is standardized, the eligible test specimen page is selected, the density and chromaticity values of a specimen paper designated color piece are measured, and a corresponding relation table for the chromaticity and density is built, so that the optimal density of the printed matter is rapidly determined, the defect that the optimal solid density is obtained through relative contrast is overcome, and accurate reappearance of color reproduction is achieved.
Owner:北京汇林印务有限公司

Unified Web-Based System For The Delivery, Scoring, And Reporting Of On-Line And Paper-Based Assessments

A hardware and software implemented, standardize testing, scoring and reporting system has a network interface, being either LAN or the Internet. A test is selected from a library, assigned to a group of examinees, and a record is made of the assignment. The test is available on-line, or downloaded, or both. Downloaded tests are saved as PDF files and printed into booklets. Examinees record answers on bubble sheets, which are scanned at the customer site or shipped to a processing plant. Individual scanned answer sheets provided data for individual scanned records. Scanning software performs an initial auto-correct and then performs an initial check for errors in scanned records. Tests are batched for later inspection. Scanned records with errors are classified as invalid and the test papers are separated. Prompts are generated for a human test paper inspection and scanned record editing. Accepted batches of scanned records are sent to a scanned records server where a second scanned records error check is performed. Prompts are sent to the appropriate scanning station for further human editing of invalid scanned records. Once all records are valid they are scored and the test results stored in a database, which is accessed by a reporting subsystem associated with an on-line server.
Owner:VANTAGE TECH KNOWLEDGE ASSESSMENT
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