108 results about "Question mark" patented technology

A mouth cushion for a mask system includes a side wall, an undercushion extending away from the side wall, and a membrane provided to substantially surround the undercushion and adapted to form a continuous seal around an exterior of a patient's mouth in use. The side wall includes spaced-apart prong support structures that provide annular recesses adapted to support respective nasal prongs, and at least a portion of the undercushion includes a question-mark or sickle-shape configuration when in cross-section.

This invention relates generally to a body pillow and support system. Due to the need for additional support, pregnant women often encounter difficulty sleeping. The support pregnant women typically need is not just for their head, but for their abdomen, back and/or legs. Many pregnant women find themselves hot or cold as well as hot on one part of their body and cold on a different part of their body. All of these conditions are usually met by the pregnant woman finding several pillows and stuffing those same pillows all around her when she is trying to get some rest. This invention also is useful for a diverse group of people who need soft support to rest or recuperate and is not limited to women who are pregnant.

The invention relates to a highly wear-resistant and high-rigidity reinforced nylon 66 compound. The invention is characterized in that the compound consists of materials of the following weight portions: 66 portions to 100 portions of nylon, 0.1 portions to 15 portions of nucleater, 5 portions to 30 portions of wear-resistant agent, 0.5 portion to 3 portions of heat stabilizer and processing aid, and 15 portions to 105 portions of glass fiber. The invention has the advantage that each index all reaches or surpasses the scheduled requirements; the bending modulus of the material reach above 11000MPa; the hardness reaches to 135 N/mm2. Under the condition of no lubrication, surface pressure of 1.5 kg/m2, speed of 29 m/min and a temperature of 23 DEG C, the maximum static friction coefficient is 0.11; the maximum dynamic friction coefficient is 0.07. Under the condition of no lubrication, surface pressure of 100kg/cm<2> and speed of 23m/min, the PV value reaches above 2270kg/cm<2> question mark m/min.

The invention relates to an automatic examination paper marking method for examination papers. The method comprises the following steps that S1. images of the examination papers are acquired, extraction and identification of examination question mark points, option mark points, answer mark points and image cutting mark points are performed on the images, the identified examination question mark points are ordered, and the answer mark points are answer boxes filled by examinees; S2, the examination question mark points and the option mark points correlated to the examination question mark points are ordered, distance between the answer mark points correlated to the examination question mark points and all the correlated option mark points is calculated, the option mark points which are minimum in distance and meet the design proportion are answers of the examines, the ordered numbers of the option mark points and standard answers are compared, and correctness of the answers of the examinees is judged according to the comparison results; and S3. after the image cutting mark points are identified, the images are cut and subjective questions are marked according to the cut images. The invention provides a method that all the examination questions are answered on the examination papers, the subjective questions are automatically marked and the subjective questions are automatically cut.

The invention discloses a producing method for copper coated aluminum row profile, and the method comprises following steps in turn: 1) cleaning, 2) drying, 3) head rolling, 4) clearance drawing, 5) bimetal combining furnace heating, 6) high frequency induction heating, 7) hot drawing, 8) heat preserving, 9) oxide layer washing and 10) packing. Beneficial effects of the invention are: the metal is not oxidized during drawing. The high frequency induction skin effect enables two kinds of metal with significantly different melting points reaching the critical point of composite metal metallurgy integrating temperature simultaneously, so a permanent compact metallurgical combining is realized between the two kinds of metals. The density of the profile in the invention is only 36.5% to 41.6% of that of pure copper rows, the length of the profile is 2.45 to 2.70 times of that of pure copper rows, the tensile strength of the profile is over 1.6 to 2 times of that of pure copper rows, and the specific resistance is between 0.027310 ohm question mark mm2/m(-40 Celsius system) and 0.041506 ohm question mark mm2/m(70 Celsius system).

The invention discloses an azotetrazole-based energetic compound with the composition of M(ATZ)(L)n question mark mH2O, wherein, M refers to Mn, Co, Ni, Cu, Zn or Pb; ATZ refers to 5, 5'-azotetrazole ion, L refers to 1, 10-o-phenanthroline or 2, 2'-dipyridyl, n refers to 1 or 2, and m refers to an integer or a decimal between 0 and 10. In the invention, the 1, 10-o-phenanthroline or the 2, 2'-dipyridyl is introduced into the M(ATZ) as an ancillary ligand to obtain a novel compound, thus integrating the characteristics of high efficiency, insensibility and environmental protection of a catalyst on the premise of the combustibility improvement of composite propellants. The azotetrazole-based energetic compound has the advantages of simple preparation method and accessible raw materials.

A Beam Clamp comprised of a pair of similar opposing clamp bodies (1) that preferably has a cross section on the interior surface of each clamp body shaped generally like a “question mark” (?) and is arranged in an assembly where the opposing clamp bodies (1) generally mirror each other where the open portion of each faces each other. The two clamp bodies (1) are connected and pulled toward each other with a fastener such as a bolt (7). The clamp bodies (1) capture a member (16) or (17) such as a pipe or channel and a portion of a structure member (12). A structure flange (13) of a structure member (12) such as an I-Beam is captured with the clamp bodies (1) hooking over opposite edges of the structure flange (13) to leverage and secure the structure member (12), the round member (16) or rectangular members (17) and the 2 clamp bodies (1) together.

A drapery mounting system comprised of a drapery rod member, a drapery hanger element, and a support member for the rod. The support member is positioned below and intermediate the respective opposed ends of the drapery rod. The support member includes a saddle, a support arm, and a retainer. The saddle is shaped to support a lower external portion of said drapery rod. The saddle extends laterally of the drapery rod for less than about the cross-sectional width of the rod to permit a drapery hanger to pass unimpeded over the saddle. The saddle element preferably has longitudinally opposed edges disposed along the drapery rod. The longitudinally opposed edges are generally convexly arcuate relative to a longitudinal axis of the drapery rod. The support and retention functions are separated. The saddle supports the rod and the retainer releasably retains the drapery rod in engagement with the saddle. A support arm supports from below the saddle. The drapery hanger is slidably supported on the drapery rod member for substantially unimpeded movement past the support member. The drapery hanger typically has a generally question mark shaped form including a hook portion with an open mouth and a depending leg portion, with the open mouth preferably being of sufficient width to pass the drapery rod member laterally therethrough.

A keyboard or keypad driver and method that, by monitoring and analyzing user keystrokes (input), introduces it's own keystrokes to the data stream, thereby reducing the need for the user to hit the Shift, Period, Question mark, Apostrophe and Num keys.

The invention relates to the field of electronics, in particular to analysis systems. A teaching difficult point big-data analysis system includes an examination paper reviewing system, a knowledge point classifying system and a teaching difficult point statistical system; the examination paper reviewing system is used for reviewing students' examination papers and extracting mark numbers of examination questions which are wrongly answered in each student's examination paper, and the extracted mark numbers serve as mistake question mark numbers; statistical operation is conducted on the examination papers of all students, and the error rate of each mistake mark number is extracted; the knowledge point classifying system is provided with an examination-question-classifying category list, and mark numbers of examination questions based on the same knowledge point are classified into a knowledge point item in the examination-question-classifying category list; the teaching difficult point statistical system is used for adding up the error rate of each examination question mark number in one knowledge point item, and the overall error rate of the knowledge point item is obtained; the knowledge point items of which the overall error rates are 50% or above serve as teaching difficult points. According to the teaching difficult point big-data analysis system, the teaching difficult points are found out through teaching difficult point big-data analysis, so that it is convenient for teachers to learn about the teaching difficult points, and therefore the teachers can further explain the teaching difficult points to the students.

The invention provides a sequence distribution method and a corresponding sequence transmitting and receiving method and a device thereof. Sequences in each sequence group are divided into a plurality of subgroups; the sequences in each subgroup are obtained by being selected from a candidate sequence set corresponding to the subgroup according to certain rules; the determined sequences are allocated to a subarea by the system. As for the subgroup m, a function fm(question mark) corresponding to the subgroup is determined and the definition domain of the function is the candidate sequence set corresponding to the subgroup; wherein, the sequences in the subgroup m of the sequence group k are determined by selecting n sequences in the candidate sequence set while the sequences cause values of a function d (fm (question mark), Gk) to be smaller, wherein, k is a group number of the sequence group, m is a sequence number of the subgroup, n is a natural number depending on m, d(a, b) is a binary function and Gk is a value determined by the group number k. The occurrence of the sequence highly correlative to a certain length of the sequence can be avoided in other sequence groups, thus reducing strong interference. No tables for storing the large-scale sequence group are required, thus the complexity of the system is reduced.

The invention discloses a test paper automatic processing system and method based on OpenCV. The system is used for automatically processing a specified test paper, and comprises a test paper automatic identification unit based on OpenCV and a paper inspection management unit based on a B/S framework; the specified test paper is provided with a plural number of question number figures, a rectangular answer frame is arranged between each pair of adjacent question number figures, and a boundary area of the periphery of the specified test paper is provided with a plural number of question mark points used for marking positions of the question number figures; the test paper automatic identification unit comprises a test paper image acquisition and preprocessing module, a mark point processingand identification module, a question number identification and location module, an answer area identification and cutting module and a full-filling content identification module; the paper inspectionmanagement unit comprises a paper inspection logic control module, a paper inspection task distributing module, a user information management module, a content management module and a user interfacemodule. The test paper automatic processing system and method based on the OpenCV have the advantages that answers exceeding the answer area can be displayed, manual work is saved, and the paper inspection efficiency is improved.

The invention provides a wrong question management method and system, a server and a storage medium thereof. The wrong question management method provided by the invention is applied to the server connected with a terminal network and comprises the following steps that: obtaining an examination question which is wrongly answered by a user through a terminal and a knowledge point corresponding to the examination question, wherein the user is a registration user of the server, and the examination question marks at least one knowledge point; and according to the priority of the knowledge point production corresponding to the knowledge point, pushing a learning file to a terminal which is used by the user, wherein the learning file is marked by the knowledge point production. By use of the wrong question management method provided by the invention, the learning file which aims at the defective knowledge points of the user can be pushed to the user, the learning efficiency of students is improved, and the teaching burden of teachers is lowered.

The invention relates to the electronic technology field. The online real-time student work review system comprises a work review system, a knowledge point classification system and a teaching difficulty statistics system, wherein the work review system is used for reviewing works of students and extracting mark numbers of wrongly-answered questions of each student work as wrongly-answered question numbers, statistics of all the student works is carried out, and an error rate of each wrongly-answered question mark number is extracted; the knowledge point classification system is provided with a question classification category list, and question mark numbers based on one knowledge point are classified to one knowledge point item of the question classification category list; the teaching difficulty statistics system is used for summing error rates of all the question mark numbers of one knowledge point item to acquire a total error rate of the knowledge point item; knowledge point items of which the total error rates are respectively greater than 60% are taken as teaching difficulties. The system is advantaged in that statistics of work wrongly-answered question rates is convenient, teachers are facilitated to know about knowledge point mastery conditions of students, and the teachers are facilitated to carry out focused instruction of the teaching difficulties.

The invention discloses a method for catalyzing phenylethylene oxide to synthesize epoxy ethylbenzene, which is characterized in that under the condition of the temperature of 0 DEG C to 180 DEG C and the pressure of 0.1MPa to 3.0MPa, phenylethylene, oxygen, hydrogen, diluents, a solvent and a catalyst are mixed and contacted for reaction; the mole ratio of the phenylethylene, the oxygen, the hydrogen and the diluents is 1 : (0.1 to 10) : (0.1 to 10 ): (0 to 100); the mass ratio between the phenylethylene and the catalyst is (0.5 to 50) : 1; the mass ratio between the solvent and the catalyst is (20 to 1000) : 1; the catalyst refers to a cellular titanium silicon material or a composition containing the cellular titanium silicon material; the composition of the cellular titanium silicon material expressed in the manner of oxides is xTiO2 question mark 100SiO2 question mark yEmOn question mark zE, wherein, the value of X is between 0.001 and 50.0; the value of (y plus z) is between 0.005 and 20.0 and y/z is less than 1; E represents one or more noble metals selected from Ru, Rh, Pd, Re, Os, Ir, Pt and Au; m and n are numbers meeting the need of E at oxidation state; and the grains of the material are partially hollow and completely hollow.

The invention discloses a method, a device and a system for protein knowledge mining and discovery in a Chinese bibliographic database and can achieve mining and discovery of protein knowledge in the Chinese life-science bibliographic database. The technical scheme includes that the method comprises constructing the Chinese bibliographic database and a scientific data type database, performing translation and compiling of a protein-relevant text mining tool dictionary on the basis of a standard control vocabulary of the scientific data type database and with protein nouns in the Chinese bibliographic database as mining and discovery objects; converting identification number into hyperlink information according to protocols provided by the scientific data type database, and generating the Chinese bibliographic database facing to themes and application; and removing false-positive protein mining results in data mining and information integration results and modifying Chinese bibliographic text mining results.

The invention relates to an intelligent recognition system based on a legal knowledge graph, which belongs to the field of fusion of technologies such as knowledge graphs and natural language processing and laws, and comprises a word vector representation module, a model training module, a question annotation module, a candidate entity set acquisition module and an emotion recognition module; theword vector representation module is trained by adopting Skip-gram model; the model training module is used for starting to train an entity recognition model by utilizing tensorflow; the question annotation module is used for extracting user question features by utilizing word vectors and inputting the user question features into a trained model to obtain a question sequence annotated by the model; the candidate entity set obtaining module is used for obtaining entity tags marked in a question sequence through the question marking module and obtaining candidate entity names through the entitytags; and the emotion recognition module is used for extracting user emotion from the question description statement of the user. According to the invention, the labor cost can be greatly reduced, andthe intelligent legal semantic recognition speed is increased.

The invention discloses a coating water repellent agent and a preparation method thereof. The coating water repellent agent is a polyamide polyurea epichlorohydrin resin water solution with the solid content (mass content) of 50 percent to 60 percent, wherein, the mass percentage of organic chloride is less than 0.1 percent, the pH is equal to 6 to 8, viscosity is 150mP question mark s to 450mP question mark s. 10 percent of acid is added as a reaction additive in the reaction, which causes the product weight solid content generated at the final stage of the reaction and the coating property to be improved. Furthermore, low temperature reaction is adopted during the cross-linked reaction process with epichlorohydrin, then slight heating is carried out and ethanolamine is added for further reaction, thus reducing the organic chloride content of the generated byproduct, and reducing the organic chloride content of the whole product, which is kept at the level of less than 0.1 percent.

The embodiment of the invention provides a question and answer matching method and device, and the method comprises the steps: carrying out the extraction of a sentence trunk for a current user question, and generating a current sentence trunk corresponding to the current user question; searching a current knowledge point title corresponding to the current sentence trunk from a pre-established mapping table according to the current sentence trunk; wherein the mapping table is established based on historical questions marked as answering errors; if a current knowledge point title correspondingto the current sentence trunk is found, obtaining a current knowledge point; if so, taking the current knowledge point title as the input of a pre-trained general question and answer model, and obtaining a first target answer corresponding to the question of the current user through the output of the general question and answer model, so that errors in the question and answer matching process canbe efficiently repaired.

The invention relates to a preparation method of an ultraviolet and aging resistant poly (p-phenylenebenzobisoxazole) (PBO) fiber, which comprises the steps that: DAR question mark 2HCl (DAR), terephthalic acid (TA), phosphoric anhydride (P2O5) and polyphosphoric acid (PPA) (wherein, the mole ratio between the DAR and the TA is 1 to 1) are heated for dissolving under the protection of inert gases, added with an ultraviolet resisting agent, TM, for reaction for 5 hours to 7 hours under the pressure of 0.2MPa to 1.0MPa and the temperature of 110 DEG C to 120 DEG C; the pressure in a reaction kettle is eliminated and reaction is carried out for 6 hours to 7 hours in vacuum; then reaction materials are extruded by adopting a two-screw or single-screw extruder, and the dry jet-wet spinning technique is adopted. The PBO fiber obtained by the method has better ultraviolet resisting performance without affecting the mechanical property of the PBO fiber and the preparation method improves and promotes the light stability of the PBO fiber as well as composite materials thereof.

The embodiment of the invention provides a sequence distribution and processing method in a communication system and a corresponding device thereof. Sequences in each sequence group are divided into a plurality of subgroups; the sequences in each subgroup are obtained by selecting from a candidate sequence set corresponding to the subgroup according to a certain rule; definite sequences are distributed to a subarea by the system. As for the subgroup i, a function fi (question mark) corresponding to the subgroup is determined and a domain of definition of the function is the candidate sequenceset corresponding to the subgroup; the sequences in the subgroup i of the sequence group k are determined by selecting n sequences in the candidate sequence set while the sequences cause values of a function d (fi (question mark), Gk) to be smaller, wherein, k is a group number of the sequence group, i is a sequence number of the subgroup, n is a natural number, d(a, b) is a binary function and Gk is a value determined by the group number k. The occurrence of the sequence highly correlative to a certain length of the sequence can be avoided in other sequence groups, thus reducing strong interference. No substantial tables of the sequence group are required to be stored so as to reduce the complexity of the system.

The invention discloses a knowledge sharing service method based on crowdsourcing and map technology. The method comprises the steps of: 1, building a knowledge map and calculating the importance of each knowledge point in the knowledge map and storing the same in a database; 2, according to the topic task published by the user, converting the topic task into a logical expression through semanticanalysis, and querying the relevant knowledge points in the knowledge map; 3, look for users of Topk before grasp that corresponding knowledge points of the task and recommending the user to the usersthrough crowdsourcing; 4, a plurality of user who accept that task of the question record their answers on the platform according to the answering time; 5, the user publishing the title and the userbrowsing the question mark the answers of different respondents according to the answers of different respondents; 6, the reward issued by the publishing title us is rewarded by weight according to the satisfaction degree of the publishing title us to the answers under the condition that the answers do not exceed the answering time.

The invention provides a method for realizing parameter configuration by using a command line, comprising the following steps of: a, customizing a format matching table of a command line with command parameters supporting a space and/or question mark; b, inputting the command parameters in the command line; and c, calling the format matching table by a command line module to carry out command parameter matching, and carrying out meaning transferring and analysis processing on the customized command parameters. According to the method disclosed by the invention, by customizing a matching format commanded by the command line with the parameters needing to support the space and/or question mark, carrying out command format matching by the command line module during command input and carrying out special processing on a command which can be matched with the customized format, the space and/or question mark can be added when the user configures parameters, such as passwords, user names, and the like by using the command line, so that the diversity of parameter configuration is increased; meanwhile, the intensity of the passwords is also improved, and the passwords are difficult to crack.

The invention provides a softener of the scale that is difficult to be removed from a boiler used in a power station and a two-step washing scale removing method. The softener consists of the raw materials as follows based on the mass ratio: 0.5 to 7 percent of sodium ethylenediamine tetramethylene phosphonate, 0.6 to 8 percent of sodium polyacrylate, 10 to 40 percent of Na3PO4 question mark 12H2O, 8 to 35 percent of NaOH, 15 to 65 percent of Na2CO3, 2 to 10 percent of sodium humate and 0.5 to 5 percent of disodium ethylenediamine tetraacetate. The two-step scale removing method comprises the steps as follows: the softener for removing the scale is added during the operation of the boiler till the pH value is 10 to 12, the pH value of the water in the boiler is kept for 5 to 7 days under normal waste discharging situation to lead the scale of the boiler to fall off after being softened and dissolved; a corrosion inhibiting hydrochloride cleaning agent bought from market is used for cleaning at normal temperature according to a technique of Chemical Cleaning Rules of Boilers, thereby greatly shortening operation time with good cleaning effect. The scale cleaning time can be shortened to 2 to 3 days from the original 8 to 10 days. The softener for removing the scale has the advantages of innocuity, no harm and no corrosion, and can completely soften and dissolve the scale that is difficult to be removed. The problem that difficult scale of boilers of medium and low voltage power stations can not be cleaned in the prior art. The softener is also applicable to industrial boilers.

The invention relates to the electronic technology field. The school teaching quality big data analysis system comprises a test paper review system, a knowledge point classification system, a wrongly-answered question statistics system and a teaching quality evaluation system, wherein the test paper review system is used for extracting mark numbers of wrongly-answered questions of each student test paper, statistics of all the student test papers is carried out, and an error rate of each wrongly-answered question mark number is extracted; the knowledge point classification system is provided with a question classification category list, and question mark numbers based on one knowledge point are classified to one knowledge point item of the question classification category list; the wrongly-answered question statistics system is used for summing error rates of all the question mark numbers of one knowledge point item to acquire a total error rate of the knowledge point item; the teaching quality evaluation system is used for evaluating teaching quality of each knowledge point explained by a teacher. The system is advantaged in that teaching quality of a certain knowledge point explained by the teacher can be visually known by the teacher, an explanation mode of the teaching for explaining the knowledge point can be changed at the next time, and the teacher is facilitated to improve teaching quality.

The invention relates to a light weight acid resistant brick which is characterized in that: the components of the light weight acid resistant brick comprise by weight percentage 35 to 45 percent of diatomite, 30 to 40 percent of pottery clay aggregate and 25 to 30 percent of pulverized fuel ash. The granularity of the diatomite is 120 to 150 meshes, the granularity of the pottery clay aggregate is 8 to 10 meshes and the pulverized fuel ash is screened by a 12-mesh sieve. The preparation method of the light weight acid resistant brick is characterized in that the raw materials are smashed, screened and added with water to make pug which is then milled, molded, dried (under temperature of 60 to 100 DEG C) and burned under temperature of 1100 plus or minus 10 DEG C to obtain finished products. The light weight acid resistant brick of the invention has reasonable and uniform proportioning, strictly controlled burning temperature and beautiful color of the finished products, light weight (the bulk density is 0.8 to 1.0 g/m <3>) and good heat insulating property (the heat conductivity coefficient is 0.3 to 0.4 W/m question mark k), the cost of which is lowered by 30 percent, compared with the prior art.