摘要:
Described is a technology including an evaluation methodology by which a set of privileged code such as a platform's API method may be marked as being security critical and/or safe for being called by untrusted code. The set of code is evaluated to determine whether the code is security critical code, and if so, it is identified as security critical. Such code is further evaluated to determine whether the code is safe with respect to being called by untrusted code, and if so, is marked as safe. To determine whether the code is safe, a determination is made as to whether the first set of code leaks criticality, including by evaluating one or more code paths corresponding to one or more callers of the first set of code, and by evaluating one or more code paths corresponding to one or more callees of the first set of code.
摘要:
A line ascender for enabling a person to ascend a line including a receiver which tapers laterally to the line to receive the line laterally and a clamp provided for clamping the received line responsive to weight of the person. Advantageously, an errant rope can be readily received within the tapered receiver for re-engagement by the clamp.
摘要:
A trailer hitch ground connector apparatus includes a first positive clamping and electrically conductive instrument that has at least one penetrating clamp surface; and a cable operatively electrically connected with the first instrument at a first end of said cable.
摘要:
Electro-hydraulically boosted hydraulic braking system comprising a master cylinder (100) comprising a thrust chamber (105) and on command receiving pressurized brake fluid from an accumulator (300) via an electrically operated valve (200) controlled by a computer (400) on the basis of the signal supplied by the brake pedal (411) sensor (410), and an electrical power source (450) powering at least the electrically operated valve (200), the computer (400) and the sensor (410).An auxiliary generator (470) is connected in a manner that is controlled (472) by the computer (400) to the circuit (L0, L1, L2, L3) powering the computer (400), the sensor (410) and the electrically operated valve (200) if failure of the main source (450) is detected so as to allow emergency operation of the electrically operated valve (200) and allow the brake circuit (C1, C2) to be powered for a limited number of braking actions.
摘要:
The subject disclosure relates to a method and system for synchronizing a repository with a declarative definition. The method and system includes receiving the declarative definition in which the declarative definition represents a constraint-based execution model. A script is also created that translates the declarative definition into machine code. At least one function is then performed on the repository in which the script provides instructions for the at least one function.
摘要:
A master cylinder with increased safety having a piston produced by molding a plastic or aluminum alloy. The piston slides in a bore blocked off by an end wall. A valve for the master cylinder bears at rest against a pin that is fixedly mounted in the body of the master cylinder passes through the piston via a longitudinal slot. The dimensions of the master cylinder are determined such that the piston bears against the pin before coming into contact with the end wall of the master cylinder body.
摘要:
The process of producing ethynyl aromatic compounds which are useful as intermediates in the preparation of 3-dimensional carbon-carbon structures for aerospace and military applications and as starting materials in the preparation of organic semi-conductors. The ethynyl aromatic compounds may be any of the classes illustrated in FIGS. 1, 2 and 3 of the drawing. Starting compounds for the process may by any compound from the classes illustrated in FIGS. 4, 5 and 6. The starting compound is reacted in the presence of a Friedel-Crafts catalyst in a suitable solvent with an acyl compound from the class illustrated in FIG. 7 to yield a compound within the classes illustrated in FIGS. 8, 9 and 10. The carbonyl groups in this compound are reduced to yield a corresponding alcohol. Each hydroxy group in the alcohol is converted to an easily eliminatable group, e.g., by reacting it with methane sulfonyl chloride, when subjected to basic conditions. The chlorine and the easily eliminatable groups are then eliminated under basic conditions to yield the desired ethynyl aromatic compound.Illustrative examples of products produced by the process of the invention include 4-4'-diethynyldiphenyl methane; 1,2-(4,4'-diethynyldiphenyl) ethane; 1,1-(4,4'-diethynyldiphenyl) ethane; tris(4-ethynyl phenyl) methane; 4-ethynyl toluene; 2,2'-(4,4'-diethynyldiphenyl) propane; and 4-ethynyl biphenyl.