摘要:
The present invention relates to a method for providing internal server with reduced IP addresses, comprising: first, configure the corresponding relationship information between external address as well as other characteristic information and internal address as well as other characteristic information in the internal server; then, match the relevant information carried by the input messages received by the internal network and the output messages from the internal network with the configured corresponding relationship information respectively; finally, process the message according to the matching result. According to the present invention, WEB server and FTP server in the LAN can be easily provided without occupying too much valid IP addresses, thus, the present invention saves limited public IP addresses resource. Furthermore, the present invention implements port-level support to the internal server, and guarantees the security of network equipments.
摘要:
This invention provides novel fuel cell catalysts comprising new series of catalytically active thin-film metal alloys with low platinum concentration supported on nanostructured materials (nanoparticles). In certain embodiments, an integrated gas-diffusion/electrode/catalyst layer can be prepared by processing catalyst thin films and nanoparticales into gas-diffusion media such as Toray or SGL carbon fiber papers. The catalysts can be placed in contact with an electrolyte membrane for PEM fuel cell applications.
摘要:
Multimedia communications with cross-layer optimization in multimedia communications with different user terminals. Various optimization for the delivery of multimedia content across different channels are provided concurrently to a plurality of user terminals.
摘要:
The present invention relates to a method for assigning frequency spectrum bandwidth of an OFDM and OFDMA coexistence system, and the base station system combines uplink and downlink data containing OFDM sub-frames and OFDMA sub-frames in a time division fashion, assigns the frequency spectrum reasonably according to the different bandwidth requirements of the OFDM and the OFDMA and the use condition of the frequency band, and constitutes a frame structure realizing the coexistence of the OFDM and the OFDMA, so as to send the OFDMA uplink/downlink data and the OFDM uplink/downlink data. The method for assigning frequency spectrum bandwidth according to the present invention can achieve a higher frequency spectrum utilization efficiency of an OFDM and OFDMA coexistence system, avoid the waste of the frequency spectrum resource of a service provider; and can also realize more flexible networking.
摘要:
Ferroelectric rare-earth manganese-titanium oxides and methods of their manufacture. The ferroelectric materials can provide nonvolatile data storage in rapid access memory devices.
摘要:
Ferroelectric rare-earth manganese-titanium oxides and methods of their manufacture. The ferroelectric materials can provide nonvolatile data storage in rapid access memory devices.
摘要:
NMR data are acquired using a phase-alternation of the tipping pulse. Averaged properties are estimated over a window length. The averaged properties are inverted to undo the effects of the averaging. A matrix defined in terms of Walsh functions is used in the inversion.
摘要:
Language learning systems and methods may be provided. An interactive lesson module may be provided. The interactive lesson module may be configured to provide an interactive language lesson that prompts a user to repeat, translate, or define words or phrases, or to provide words corresponding to images, at a controllable difficulty level. An interactive social simulation module may be provided. The interactive social simulation module may be configured to provide an interactive environment that requires the user to use the language to communicate with a virtual character to achieve a goal at a controllable difficulty level. A learner model module may be provided. The learner model may be configured to control the difficulty level of the interactive language lesson and the interactive social simulation based on a lesson progress report and a simulation progress report.
摘要:
An electrical connector includes an insulative housing (1), a plurality of terminals (2) retained in the insulative housing, a shell (3) and a pair of strengthened members (4). The insulative housing comprises a base portion (10) and a terminal supporting portion (12) extending forwardly from the base portion. Each terminal has a contact portion (20) extending along the terminal supporting portion. The shell is attached to the insulative housing and has a mating frame (31) surrounding the contact portions and the terminal supporting portion to define a mating cavity therebetween. Strengthened members are buried at opposite ends of the terminal supporting portion.
摘要:
Novel green phosphors are disclosed having the comprise silicate-based compounds having the formula (Sr,A1)x(Si,A2)(O,A3)2+x:Eu2+, where A1 is at least one divalent cation (a 2+ ion) including Mg, Ca, Ba, or Zn, or a combination of 1+ and 3+ cations; A2 is a 3+, 4+, or 5+ cation, including at least one of B, Al, Ga, C, Ge, N, and P; A3 is a 1−, 2−, or 3− anion, including F, Cl, Br, and S; and x is any value between 1.5 and 2.5, both inclusive. The formula is written to indicate that the A1 cation replaces Sr; the A2 cation replaces Si, and the A3 anion replaces O. These green phosphors are configured to emit visible light having a peak emission wavelength greater than about 480 nm. They have applications in green illumination systems, red-green-blue backlighting systems, white LEDs, and plasma display panels (PDPs).
摘要翻译:公开了新的绿色荧光体,其具有包含具有式(Sr,A 1 H 2)x Si(Si,Al 2)的硅酸盐基化合物 O,A 3 + 2 + x 2:Eu 2+,其中A 1至少是一个二价阳离子 (2+离子),包括Mg,Ca,Ba或Zn,或1+和3+阳离子的组合; A 2是3+,4+或5+阳离子,包括B,Al,Ga,C,Ge,N和P中的至少一种; A 3是1-,2-或3-阴离子,包括F,Cl,Br和S; x是1.5到2.5之间的任何值,包括两者之间的值。 该公式被写为表示A 1阳离子取代Sr; A 2阳离子取代Si,并且A 3 N阴离子取代O.这些绿色磷光体被配置为发射具有大于约480nm的峰值发射波长的可见光。 它们在绿色照明系统,红绿蓝色背光系统,白色LED和等离子显示面板(PDP)中都有应用。