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279results about How to "Avoid direct access" patented technology

Terminal access method and terminal access device

The invention discloses a terminal access method and a terminal access device. The terminal access method comprises the following steps: on the basis of a bit value of a corresponding Access Class (AC) within an Enhanced Access Barring (EAB) parameter configured by a system, determining whether to allow the AC terminal to access; if the bit value of the corresponding AC within the EAB parameter is barred, then, on the basis of a barred time within the existing Access Class Barring (ACB) parameter, calculating a barred time for re-accessing the system and ending the process; and if the bit value of the corresponding AC within the EAB parameter is not barred, then, according to an existing system-broadcasted common ACB parameter, determining that access is allowed. According to the terminal access method and the terminal access device, the EAB and an existing ACB mechanism are combined for processing so as to solve the problem of possible impact on the system when the network is accessed concurrently by large numbers of delay-insensitive or low-priority services or terminals. Also, during the occurrence of an unexpected event, as the EAB applicable terminal is provided with appropriate control, the terminal is prevented from directly accessing the system without constraint, thereby shortening the delays and the duration of system congestion during the unexpected event.
Owner:ZTE CORP

Virtual machine security isolation system and method oriented to multi-security-level virtual desktop system

The invention discloses a virtual machine security isolation system and method oriented to a multi-security-level virtual desktop system and belongs to the field of information security. According to the virtual machine security isolation system and method, three implementation stages including detection of abnormal user behaviors, migration of virtual machines and security isolation are conducted. The virtual machine security isolation method comprises the steps that firstly, users of networks of the same security classification and virtual machines are bound together, and a user behavior feature library is established through the similarity between the operation behaviors of the users of the networks of the same security classification; secondly, matching between real-time actual user behavior features and a historical user behavior feature liberty is conducted, the threat level of the current operation of each user is worked out, a target host is selected and migrated, and the virtual machines with potential threats are migrated to a virtual machine security isolation model for execution; finally, the virtual machine security isolation model replaces the virtual machines to execute system call required by the virtual machine process. By the adoption of the virtual machine security isolation method oriented to the multi-security-level virtual desktop system, the situation that the virtual machine process directly has access to resources of a host machine system is avoided, the dependence of the virtual machine process on a kernel is reduced, the safety of the host machine system is improved, and the purpose of security isolation of the virtual machines is achieved.
Owner:CHONGQING UNIV OF POSTS & TELECOMM +1

Mold bag grouting method and device for quickly and uniformly reinforcing soft stratum

The invention belongs to reinforcement and improvement technology of soft surrounding rocks of tunnels and underground engineering, and mainly provides a mold bag grouting method and a mold bag grouting device for quickly and uniformly reinforcing a soft stratum. The device is provided with a primary grouting unit and a secondary grouting unit; the pipe wall of a grouting pipe (1) of the secondary grouting unit is provided with a plurality of slurry outlets (2), a mold bag (3) is sleeved on the grouting pipe (1) of the secondary grouting unit, and two ends of the mold bag are hooped on the grouting pipe; a pre-tightening unit consisting of a cushion plate (7) and a nut (8) is sleeved on the grouting pipe (1) of the secondary grouting unit at the orifice position, and the other end of the grouting pipe (1) of the secondary grouting unit is connected with a secondary grouting pipeline through two ball valves; and the primary grouting unit is provided with a grouting device consisting of a double-bag grouting plug (14), a primary grouting unit slurry conveying steel pipe (17) and a hand pump. The method and the device can realize quick and uniform reinforcement of the soft surrounding rocks, improve the physical and mechanical indexes of the soft surrounding rocks, increase the stability of the soft surrounding rock, meanwhile, realize region controlled grouting and avoid slurry loss.
Owner:CHINA RAILWAY TUNNEL GROUP CO LTD

Optical sensor for high-flux dust particle counter

The invention relates to an optical sensor of large flux dust particle counter, comprising a laser source, wherein the light path of the laser source is provided with an aspheric lens, an indicant stop, an outgoing stop and a light trap in turn; a light path surface mirror, field stop and a photoelectric detector are arranged between the incident stop and the outgoing stop and vertical to the light path; a light sensitive zone and the light sensitive surface of the photoelectric detector are respectively arranged at two sides of the spherical center of the spherical mirror; the rectangle field stop is arranged at the front of the photoelectric detector and fit with the shape of the light sensitive zone. The illumination light path and scattered light collection light path of the optical sensor have simple design and easy adjustment. A stop is arranged at the front of the light sensitive zone to reduce the scattered light entering into the chamber, and a stop is arranged between the light sensitive zone and the light trap to prevent the light beam entering into the light trap from being reflected back to the chamber, thereby improving the signal noise ratio of the sensor. The field stop adopts a horn mouth type obscuration stop for preventing scattered light on the light path from directly entering into the detector.
Owner:NANJING UNIV OF SCI & TECH

Elevator remote debugging method, application terminal and debugging system

The embodiment of the invention discloses an elevator remote debugging method. The elevator remote debugging method comprises the steps that a long connection is established with a server; communication is established with an elevator debugger of an elevator to be debugged; actual elevator information of the elevator to be debugged is obtained from the elevator debugger; whether the actual elevator information is matched with preset associated elevator information or not is judged; if the actual elevator information is matched with the preset associated elevator information, a verification information input interface is output; verification information input by a user is sent to the elevator debugger to be verified; if verifying-passing information is received, an on-line debugging specialist is selected; and the actual elevator information of the elevator to be debugged is sent to the sever, and the sever selects a corresponding adjustable parameter according to the actual elevator information of the elevator to be debugged and send the adjustable parameter to a setting terminal corresponding to the selected debugging specialist to enable the debugging specialist to remotely regulate the adjustable parameter in the elevator debugger. The embodiment of the invention further discloses an application terminal and a debugging system. According to the elevator remote debugging method, the application terminal and the debugging system, the elevator debugging efficiency and debugging safety are improved.
Owner:INVT ELEVATOR CONTROL TECH WUXI

Satellite attitude rapid maneuver switching control method

ActiveCN103279036AAvoid the problem of not being able to enter closed-loop controlAvoid direct accessAttitude controlAdaptive controlHandoff controlLoop control
The invention discloses a satellite attitude rapid maneuver switching control method. A used switching parameter delta is used for judging an amplitude of an angular speed to carry out switching, so that compared with an angular position judging method, the rapid and flexible satellite attitude switching control method can avoid the problem that a satellite attitude cannot enter closed-loop control stage due to factor influence of external interference, inertia perturbation and the like; a used switching parameter gamma can avoid partial time during which a small angular speed is included in when maneuver is started, and avoids the satellite attitude directly entering a closed loop stage during the time when maneuver is started, wherein the partial time meets the condition that the absolute value of omega is less than or equal to delta; and a used switching parameter eta can be used to consider engineering constraint and implement automatic switching of acceleration, constant speed, deceleration and closed loop of the attitude maneuver according to received relative attitude quaternion information. The satellite attitude rapid maneuver switching control method realizes accurate switching; rapid attitude maneuver control can be implemented; maneuver around a quaternion Euler axis is implemented; and path planning and time optimization of attitude maneuver are implemented.
Owner:SHANGHAI XINYUE METER FACTORY

Application software business control method and system based on business componentization

The embodiment of the invention discloses an application software business control method and an application software business control system based on business componentization. The method comprises the following steps: acquiring a data buffer area according to a business connecting request transmitted by a channel, wherein the business connecting request carries a business function mark; acquiring an action sequence list which corresponds to a business according to the business function mark; acquiring first business data from the channel according to the action sequence list and acquiring second business data from a database; storing the first business data and the second business data into the data buffer area; after all business components which correspond to the business execute relevant businesses, feeding the first business data and the second business data with changed contents in the data buffer area back to the channel and writing the first business data and the second business data into the database. The method fundamentally prevents the direct access of all the business components in application software on the database, thereby fundamentally solving the problem of database overloading and even deadlock in the running process of the application software.
Owner:DALIAN NEWCHOILINK SOFTWARE GROUP

Method for separating acetic acid from water by rectification of acetic acid dehydrating tower

The invention relates to a method for separating acetic acid from water by rectification of an acetic acid dehydrating tower, mainly solving the problems of high energy consumption, high equipment manufacture cost and high operation cost in a process of dehydrating acetic acid in the prior art. The method comprises the steps of: carrying out azeotropic distillation by adopting the acetic acid dehydrating tower for dehydrating, adopting water or cyclohexane in a heat pump circulation as a heat exchange medium, absorbing heat released by condensation of top discharged materials of the acetic acid dehydrating tower through a heat exchange medium in a closed heat pump process, raising the temperature after the heat exchange medium absorbs the heat of the top discharged materials and then compressed, desuperheating high-temperature overheat steam by a desuperheating device to form saturated steam, introducing into a kettle reboiler and exchanging heat with bottom discharged materials; throttling and decompressing the steam subjected to kettle heat exchange and then entering into a gas and liquid separation tank, enabling the separated liquid phase to a tower top condenser for exchanging heat, mixing the separated gas phase with gas at an outlet of the tower top condenser together to enter into a compressor for exchanging heat with a kettle again. According to the technical scheme, the problem is better solved, thus the invention can be applied to industrial production of separating the acetic acid from the water.
Owner:CHINA PETROLEUM & CHEM CORP +1

USB flash disk virus isolator and working method thereof

The invention relates to the technical field of USB flash disk virus isolation, in particular to a USB flash disk virus isolator and a working method thereof.The USB flash disk virus isolator comprises a main control chip used for strictly controlling and checking data access; the storage module is used for caching the isolated virus files; the network interface module is accessed to a local areanetwork by adopting an international general network protocol; the USB interface module is used for being externally connected with a USB flash disk; the display module is used for visually displayingthe equipment operation state; the storage module, the network interface module, the USB interface module and the display module are respectively connected with the main control chip through corresponding lines; uSB flash disk data is filtered and screened through a built-in system program of the main control chip; the system program automatically detects and identifies the safety file of the white list and the virus file of the black list, the safety content on the white list is allowed to be connected with the PC through the local area network to be read and written, and once the system program scans the content on the black list, the corresponding content is immediately isolated and hidden, so that virus spreading caused by misoperation of a client is avoided.
Owner:福州浩恒影音工程有限公司

Gentle dip medium-thick ore body safety and low-cost combined segmented mining method

The invention discloses a gentle dip medium-thick ore body safety and low-cost combined segmented mining method. Lower segmented stopes (2) and upper segmented stopes (3) are alternately arranged in the ore body vertical direction at each interval of 10-15 m, one recovery unit (1) is formed through combination of each lower segmented stope (2) and the corresponding upper segmented stope (3), and studs (4) are scratched at the end portions of the recovery units (1). In each lower segmented stope (2), a cutting groove is formed with a cutting open yard (10) as the free face, and ore falls into atrench (9). A shoveling and conveying machine is utilized for conducting ore loading in an ore loading access road (8), carries the ore into an ore drop shaft (11) through an ore discharging roadway(7) and then lowers the ore into a conveying roadway (12) for car loading and conveying-out. According to the gentle dip medium-thick ore body safety and low-cost combined segmented mining method, every two segmented stopes are gathered into one recovery unit for exploitation, the ore discharging roadway, the ore drop shaft, a slope ramp linking way and other projects are commonly used, the stopepreparation cost is reduced, the preparing time for the stope preparation work is saved, and the exploitation efficiency is improved. Exploited waste stone can be machined into building materials to be sold, and the stockpiling space is additionally arranged for tailing filling.

Seawater source water ring heat pump device for air-conditioning system

The invention provides a water ring heat pump device for exchanging heat by using seawater heat. The device comprises a seawater plate-type heat exchanger, at least one water-water heat pump unit, a heat exchange medium storage device, at least one magnetic valve and a heat exchange medium transportation pipeline, wherein when one magnetic valve is provided, the magnetic valve is positioned on one side of the seawater plate-type heat exchanger; and when two or more magnetic valves are provided, the magnetic valves are positioned on the two sides of the seawater plate-type heat exchanger respectively. The low-grade energy of seawater is subjected to two heat exchange processes through the water ring heat pump device and is transferred to indoor air or hot water, so that the aims of supplying heat, cold, household hot water to the inside of a room are achieved. In the device, heat exchange between a heat exchange medium and the seawater is performed through the seawater plate-type heat exchanger; the water-water heat pump unit is prevented from being corroded when the seawater enters the heat pump unit; and due to the adoption of the mode, the evaporator and the condenser which are made of anticorrosion materials are not required to be used, the initial investment of equipment is reduced and the device is convenient to popularize and apply in reality.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY +1
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