摘要:
A content delivery method directs a request by a client for an object to a first server in a content delivery network (CDN), regardless of whether the first server has the requested object. If the first server has the requested object, then it is served to the client from the first server; otherwise, the first server redirects the client request to a second server in the CDN to handle the request. The second server may be a peer server of the first server. The first and second servers may be edge servers in the CDN.
摘要:
A content delivery method directs a request by a client for an object to a first server in a content delivery network (CDN), regardless of whether the first server has the requested object. If the first server has the requested object, then it is served to the client from the first server; otherwise, the first server redirects the client request to a second server in the CDN to handle the request. The second server may be a peer server of the first server. The first and second servers may be edge servers in the CDN.
摘要:
A method, system and computer program product for managed object replication and delivery redirects, directly or indirectly, a client's request for an object that is not available at a best or optimal handling edge server of a network to a parent server that has the requested object. So, where the requested object is not available at the handling edge server, the client's request is redirected directly to the parent server that can provide the requested object to the client or indirectly via one or more parent servers to a parent server that can provide the requested object to the client. The method, system and computer program product further intelligently replicates the object to the edge server if the object is popular enough. Likewise, an object is removed from an edge server when it is no longer popular. All redirection and replication operations are preferably transparent to the end-user and do not degrade the quality of service.
摘要:
A damper assembly including a spherical elastomer bearing member, wherein the spherical elastomer bearing member is operable for accommodating relative motion and/or vibration, and a flat elastomer bearing member, wherein the flat elastomer bearing member is operable for accommodating relative motion and/or vibration. The damper assembly also including a substantially rigid transition shim disposed between the spherical elastomer bearing member and the flat elastomer bearing member, wherein the substantially rigid transition shim is operable for coupling the spherical elastomer bearing member to the flat elastomer bearing member. The damper assembly further including a tension member attached to the substantially rigid transition shim, wherein the tension member is operable for precompressing the spherical elastomer bearing member and increasing the cocking stiffness of the damper assembly.
摘要:
The invention provides in preferred aspects architectural lighting structures that comprise a plurality of tubular elements at least partially embedded into an at least substantially transparent lens structure of a lighting fixture. The lighting fixture is typically a device employed for interior use, particularly residential buildings or commercial buildings such as office buildings. By partially embedding the array or plurality of tubular elements into the transparent lens structure, the fixture can appear as if it is substantially a part of the surrounding surface when the lighting fixture is turned off. Nevertheless, when the light is turned on, light coming from the fixture can still be directed or modified in an appropriate manner, e.g. without detrimental light output reductions), and without the need of an expensive, sophisticated reflector or any necessity of the fixture extending beyond the surrounding surface as has been utilized in certain prior attempts to mask architectural lighting fixtures. Still further, while the light fixture is turned on, an unsightly bulb or glaring reflector can be masked from a viewer's eye as a result of the partially embedded tubular elements.
摘要:
Data from the pyrolytic analysis of rock samples obtained from drilling operations in an existing oil field are used to characterize the quality and condition of reservoir rock by comparison of the values of an index for the unknown reservoir rock samples with the value of the index for a known type and quality of petroleum reservoir rock sample, the index being denominated Pyrolytic Oil Productivity Index ("POPI") and defined by the expression:ln(LV+TD+TC).times.(TD.div.TC)=POPI (I),where the terms of the equation are determined empirically and the resulting POPI values can be used to direct horizontal drilling operations in real time to optimize the position of the drilling bit in the reservoir.
摘要:
In the oxidation of a substituted aromatic compound such as p-xylene using a heavy metal catalyst promoted by bromine the effluent gases from the oxidation contain methyl bromide and are treated for the recovery of bromine. A variety of methods are described whereby the bromine may be recovered, preferably in a form suitable for reuse in the oxidation process.
摘要:
Methods for processing pyrolytic characterizing data (pcd) from reservoir rock samples obtained from known geographical locations under circumstances that are encountered during the drilling of wells provide information that is important for assessing the relative amounts of various hydrocarbon and organic matter types found in the reservoir and for characterizing the reservoir quality and preparing compositional modeling data, and include the steps of comparing the pcd for known end-member components typically found in the geographical location with the pcd derived from test samples and applying mathematical analyses to identify the predicted composition and quantitative measure of end-members. The method is applied to model hydrocarbon moveability, reservoir injectivity; contaminants and soil an aquifer pollutants.
摘要:
A marine vehicle mooring and security device comprising bow and stern securing mechanisms connected to a mooring structure on one end and to existing boat hardware at the other. The securing mechanisms include extension arms and a secondary support member bracing at least one of the bow or stern extension arms, and an attachment apparatus to connect the securing mechanisms to a marine vehicle. Damping for both tensile and compressive forces is provided in the secondary support member by way of an elastic element.
摘要:
A method for calculating the volume of various predetermined organic end-members in samples of rock at various depths in oil reservoir rock is utilized to produce one or more graphic displays that are use to interpret the data to identify, e.g., tar mats, in order to improve the efficient production of hydrocarbons from the well. Data is collected from the samples by known pyrolysis and compositional modeling methods; additional data is obtained by elemental analysis to determine weight percentages of C, H, N, S and O in the selected end-members and characterization of physical properties of representative samples of the reservoir rock, e.g., from core samples; the data is then processed in accordance with the method to provide a series of data points used to produce the graphic displays for visual interpretation.