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1.
针对在日常使用和维护MD110程控交换机时,经常需要进行话务限制的情况,主要介绍了MD110程控交换机进行话务限制时所需的3个参数(TCD类别、话务连接矩阵、用户组CUST),给出了话务限制数据的设置原则和编写步骤,对实际工作中存在的问题加以举例说明,并给出了相应的解决方法,力求做到全局话务持续限制合理有效,使系统运行可靠稳定。  相似文献   

2.
为了解决程控交换机生产和维护中的质量检测及故障诊断问题,本文从实用的角度出发,针对CY院自行研制开发的CIPT─2000型数字程控交换机,提出了交换机用户板故障检测的方法,设计了其测试系统的硬件结构及软件结构,并用汇编语言和C语言得u实现。经实际应用表明,该系统性能可靠,方法实用,井使用户板的生产和维护效率大大提高。  相似文献   

3.
叙述了七号信令的第4级——电话用户部分(TUP)功能,以及基于DES-3数字程控交换机配置的七号信令系统第4级功能的软件设计及实现,并在H省实现了DES-3数字程控交换机七号信令系统与S1240、E10B七号信令系统的对接。运行结果表明,第4级TUP功能运行稳定,故障率低,大话务呼叫呼损率小于4×10-4,达到了设计要求。  相似文献   

4.
针对在日常使用和维护MD110程控交换机时,经常需要进行话务限制的情况,主要介绍了MD110程控交换机进行话务限制时所需的3个参数(TCD类别、话务连接矩阵、用户组CUST),给出了话务限制数据的设置原则和编写步骤,对实际工作中存在的问题加以举例说明,并给出了相应的解决方法,力求做到全局话务持续限制合理有效,使系统运行可靠稳定。  相似文献   

5.
本文给出了一种程控交换机呼叫模拟的有效方法——事件表驱动模拟法。该方法克服了传统的模拟呼叫发生器必须与话路设备相接、话务量不高、参数调节不灵活等局限性,采用事件表的形式由软件直接将话务注入交换处理机,利用“时间冻结“技术确保模拟机和系统机之间的实时同步,实现了在没有话路硬件的条件下对程控交换机进行各种呼叫的实时模拟。该方法已成功地应用于国产中大容量数字程控交换机环境模拟器的研制,为程控交换机软件系统级检测和处理机的BHCA值的精确测定提供了有效的手段。  相似文献   

6.
针对程控用户交换机与PC机通信数据库中对数据可靠性、实时性要求,提出一种实时关系数据库管理系统中实时事务并发控机制在程控用户交换机与PC机通信中应用的方法.  相似文献   

7.
刘猛 《科技信息》2007,(17):47-47
程控交换机在大中型企事业单位广泛使用,如何和程控机进行接口数据交换、将电话管理功能集成到单位内部管理信息系统中是目前程控交换机用户迫切关注的问题。本文介绍了程控交换机的接口方式,探讨了电话计费系统的功能模块设计和实现方法,并以桑达程控交换机为例,给出了该程控交换机与电话计费系统的一种实用接口实现方法。  相似文献   

8.
为适应多种通信设备的接续,对不同的设备配备不同的接口,以满足不同用户的需求,本文在对几种常用的数字程控交换机硬件控制结构分析比较的基础上,提出了CIPT-2000数字程控交换机硬件控制结构的设计方案及实现方法,并通过实践得以验证。  相似文献   

9.
介绍一种新型的程控交换机用户线测试系统。本系统可以自动完成受理、测试、派工等一系列112测量台的日常工作,同时还可对本地电话网的用户线路资料进行集中管理  相似文献   

10.
鉴于传统人工线路测试方式效率差,强度大,准确性差,设计实现了一种全新通用的工本普通PC微机的程控交换机线路自动测试系统,系统以邮电部国际为准则,提出了系统的测试功能目标与内容分析了设计系统的主要技术问题,给出了系统的实现方法。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

16.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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