DOMES—一个已开发的调度操作管理专家系统

本文介绍了东南大学与安徽省调度中心用PROLOG语言合作研制开发的调度操作管理专家系统—DOMES,它能正确开出安徽省调所必需的各类调度命令票与操作票,并已在IBM-AT-286上成功地投入运行。本文描述了DOMJJ的结构、性能与功能,介绍了其数据库与规则库,简要讨论了该专家系统的进一步扩展与作用。

Seabed domes with circular depressions in the North Yellow Sea

Numerous isolated shallow seabed domes with depressions were discovered in the North Yellow Sea in a high-resolution multibeam echosounder survey. Twelve domes were located within a 11 km by 17 km survey area. The domes in this area were between 0.1 m and 1.0 m high with diameters ranging from 250 to 1 700 m. They were surrounded by corresponding depressions and displayed characteristic shapes ranging from circular to elliptical. The acoustic anomalies displayed on the high resolution sub-bottom profile images demonstrated that shallow gas accumulated just beneath these domes, suggesting that the migration and accumulation of the shallow gas caused the formation of these features. Accumulation atop the seabed domes and erosion within the depressions, as indicated by the lithological features of the sediment cores, suggested that seabed bottom currents also played a role in the formation and evolution of these features. In addition, the simultaneous decrease in the chlorite and sulfate content in core d pore water samples confirmed the presence of submarine fresh/brackish groundwater, which is of interest for hydrological budgets and may be a significant component of the regional hydrologic balance. Our findings suggested that shallow gas accumulation and migration are likely coupled to localized groundwater discharge at this domed site.

The PTst Evolution of Metamorphism and Development Mechanism of the Thermal-Structural-Gneiss Domes in the Chinese Altaides

A series of thermal-structural-gneiss domes (briefly TSG domes) are developed in the Chinese Altaides. Sericite-chlorite zone, biotite zone, garnet zone, staurolite zone, kyanite (andalusite)zone, sillimanite- cordierite (sillimanite-garnet)zone, migmatite zone and migmatic granite- gneiss field are developed from the low-grade metamorphic area to the centre of the TSG domes. The succession of the formation and evolution of the progressive metamorphic zone, migmatite zone and migmatic granite-gneiss corresponds to the spatial sequence from the outer part to the centre of the TSG domes. The peak temperature of the metamorphism and granitization increases progressively from 400℃ to 800℃ while the pressure decreases progressively from 1.05 GPa to 0.10 GPa from the biotite zone to the migmatic granite-gneiss field. The metamorphism of the erogenic belt may be described by the pressure-temperature-space-time model (PTst). In the main episode of orogeny, the deep heat flow and structural flow upsurged along a series of the centres of the regional thermodynamic anomalies, giving rise to the progressive metamorphism, granitization, and the differential uplift and the formation of TSG domes.

Non-Diapiric Salt Domes in the West Zanjan, Central Iran

The salt domes of the west Zanjan (Central Iran) are the most important structures in the study area. They have been formed by the uplifting and erosion together under low humidity and dry and warm climate condition. The salt rocks with near to 200 meters thickness are related to lower member of the Upper Red Formation (Early Miocene) that deposited in the inverted back arc basin. They have been formed in the Central Iran basin after the Arabian-Eurasian convergence. Based on filed works and preparation of geologic map, salt domes have been cropped out during regional uplifting and erosion along hinge zone of a longitudinal anticline. Also, there is no evidence for salt diapirism and so, they are different from some salt diapirs in the southwestern margin of Zanjan that is investigated by other researchers.

The Impact of Geometrical Structure of Domes on the Acoustic Performance within Mosques

Mosques are considered as one of the most significant architectures for Muslim,where they have evolved to attain the Islamic requirements.Various worship activities are done within these public architectures and these activities required various acoustical needs.The geometry of mosques and their ceiling is largely impacted on the acoustical characteristics.The domes are the most shape that utilized to construct the mosque ceiling.The geometric architecture of the domes represents one of the key factors that impact on the performance of acoustics within the mosque.Thus,this paper aims to determine the impact of geometric architecture of domes on the quality of acoustical characteristics within the mosque.The mosque of King Abullah has been selected as a case study to address this issue.Further,many mosques have been studied from the literature to determine the impact of the geometrical structure of the domes on the acoustic characteristics and speech intelligibility.Many parameters have been utilized to measure the acoustical performance like RT,clarity,dome volume,dome shape,dome height and the material utilized to cover the dome surfaces.Based on the studies within the literature and the case study within this paper,the impact of the geometrical structure of the domes has been determined,also the impact of these parameters on the sound quality within the mosque has been determined at the end of this paper.

Dynamic Response of 100m, 200m, 300m Lattice Domes with LRB Seismic Isolator

The objective of this study is to analyze the seismic response characteristics of 100 m, 200 m, 300 m spanned lattice domes under both horizontal and up-down ground motion of El Centro earthquake. For the analysis of earthquake response of lattice domes, the time history analysis is used for the estimation of the dynamic response. Horizontal and up-down earthquake ground motions cause a large asymmetric vertical deformation in the large spatial domes. This study is to investigate the seismic characteristics of lattice domes for eigenvalue modes, displacement and acceleration response. The earthquake response of lattice domes with LRB (lead rubber bearing) isolation device by the horizontal and up-down combined ground motion is significantly reduced for the asymmetric vertical deformation and accelerations of domes.

Technical reports and theoretical studies about the structural behaviour of masonry domes in the 18th century

The development of the scientific theory on the stability of vaulted structures was driven mainly during the 18th century based on applying the laws of Mechanics and the knowledge of the properties of materials.In the specific case of structures such as domes,the development of the theory is closely related to the theory of arches and vaults.Still,the main contributions are made in technical reports on the construction,stability,and repair of domes,such as the dome of Saint Peter’s in Rome and Sainte-Genevie`ve or Pantheon in Paris.This article,therefore,analyses the relationship between theory and practice and the development achieved in the specific subject of masonry domes during the 18th century from the point of view of the Limit Analysis of Masonry Structures.In a more general sense,the objective of this research is to study in greater depth the theory of Limit Analysis itself,that is,to learn from the work carried out in the 18th century by mathematicians,architects,and engineers,who,although unaware of the existence of the theoretical framework of Limit Analysis as such,moved within it.

全国统一大市场赋能经济高质量发展作用机制研究

建设全国统一大市场是推进经济高质量发展的重要途经。从全国统一大市场的角度研究经济高质量发展的问题,能有效把握经济发展中市场与政府的关系,提高质量和效益,推动经济持续健康发展。在分析统一大市场对高质量经济发展影响机理的基础上,本文利用2003~2020年全国30个省(区、市)的面板数据构建高质量经济发展水平指数,并利用双固定效应模型、SYS-GMM模型和中介效应模型,对全国统一大市场建设对高质量发展的影响机理进行了实证和考察。结果表明:全国统一大市场建设可以助力高质量发展的实现;机制分析发现,全国统一大市场建设可以通过推动市场化促进经济高质量发展;相较于中、西部地区,这种助力作用只在东部地区显著。高质量发展分项检验结果显示,全国统一大市场建设可以有效促进创新驱动和绿色环保。最后,根据研究结论提出相应的政策建议。

The Legend of “Atlantis Legend” on Santorini Contribution to the Geology of Santorini

Santorini has attracted the attention of both Geoscientists and Archeologists. The numerous high-angle faults of small dip-slip displacement were ignored by the geoscientists. The formations of domes by high-angle faults were also ignored. The discovery of a buried town, Akrotiri-with excellent buildings and artifacts, by Archaeologists and the destruction of the flourishing Minoan civilization and Knossos (Crete) in c. the same era caused a lot of interest. Plato in his “Dialogues” of Socrates with Kritias and Timaeus talked about a catastrophe of the island of Atlantis. Galanopoulos, who was the first and Archeologists suggested that the “Legend of Atlantis” was associated with the fall of huge Areas in Santorini, due to the “vacuum” after the gigantic amounts of ejecta. They miscalculated the amount of volcanic ejecta and misinterpreted the lineaments on the walls of the so-called “Caldera (s)” due to pseudo-layering. The author using the importance of the high-angle faults proves that the topography is mainly the result of faulting and neither of erosion nor of volcanism. The juxtaposed slopes of Thira-Thiresia formed fold-like structures and there was not any caldera collapse.

External blast flow field evolution and response mechanism of single-layer reticulated dome structure

Single-layer reticulated dome structure are commonly high-profile building in the public and can be attractive targets for terrorist bombings,so the public can benefit from enhanced safety with a stronger understanding of the behavior of single-layer reticulated dome structure under explosion.This paper investigates the fluid-structure interaction process and the dynamic response performance of the singlelayer reticulated dome under external blast load.Both experimental and numerical results shown that structural deformation is remarkably delayed compared with the velocity of blast wave,which advises the dynamic response of large-span reticulated dome structure has a negligible effect on the blast wave propagation under explosion.Four failure modes are identified by comparing the plastic development of each ring and the residual spatial geometric of the structure,i.e.,minor vibration,local depression,severe damage,and overall collapse.The plastic deformation energy and the displacement potential energy of the structure are the main consumers of the blast energy.In addition,the stress performance of the vertex member and the deep plastic ratio of the whole structure can serve as qualitative indicators to distinguish different failure modes.

南极Dome A地区低温低压环境下智能照明控制技术探索

南极内陆Dome A地区极端恶劣的环境对科考人员的生理极限及作业效率构成了严峻挑战,而无人观测站可突破人类生理限制,持续高效工作,其关键运维技术,包括智能照明控制技术等越发受到各国重视。本文在总结Dome A地区遥远、低温、极夜、白化天等不利影响因素的基础上,探索适应该区域极端环境、满足科考人员工作需求、便于远程及现场操作的智能照明系统运维模式,进行满足极昼极夜环境下无人观测站室内监测及维护需求的智能照明适宜技术选型。通过对铱星传输模块、Wi-Fi无线网关等子系统的组合,提出可耐受Dome A地区低温低压环境的现场照明监控设备控制方案,对南极无人站区的建设及相关智能照明控制技术的发展具有指导意义。

Sensitivity analysis and probability modelling of the structural response of a single-layer reticulated dome subjected to an external blast loading

The structural response of a single-layer reticulated dome to external explosions is shaped by many variables,and the associated uncertainties imply non-deterministic results.Existing deterministic methods for predicting the consequences of specific explosions do not account for these uncertainties.Therefore,the impact of the uncertainties associated with these input variables on the structures’response needs to be studied and quantified.In this study,a parametric uncertainty analysis was conducted first.Then,local and global sensitivity analyses were carried out to identify the drivers of the structural dynamic response.A probabilistic structural response model was established based on sensitive variables and a reasonable sample size.Furthermore,some deterministic empirical methods for explosion-resistance design,including the plane blast load model of CONWEP,the curved blast load model under the 50%assurance level,and the 20%mass-increased method,were used for evaluating their reliability.The results of the analyses revealed that the structural response of a single-layer reticulated dome to an external blast loading is lognormally distributed.Evidently,the MB0.5 method based on the curved reflector load model yielded results with a relatively stable assurance rate and reliability,but CONWEP did not;thus,the 1.2MB0.5 method can be used for making high-confidence simple predictions.In addition,the results indicated that the structural response is very sensitive to the explosion parameters.Based on these results,it is suggested that for explosion proofing,setting up a defensive barrier is more effective than structural strengthening.

Mineralization of the Liwu large-scale stratiform copper deposits in Sichuan Province, China: Constraints from fluid inclusions

The Liwu stratiform copper deposit is located in the northwestern Jianglang dome,western China.Current studies mainly focus on the genetic type and mineralization of this deposit.Detailed fluid inclusion characteristics of metallogenic period quartz veins were studied to reveal the ore-forming fluid features.Laser Raman analysis indicates that the ore-forming fluids is a H_(2)O-NaCl-CH_(4)(-CO_(2))system.Fluid inclusions microthermometry shows a homogenization temperature of 181-375°C and a salinity of 5.26%-16.99%for the disseminated-banded Cu-Zn mineralization;but a homogenization temperature of 142-343°C and a salinity of 5.41%-21.19%for the massive-veined Cu-Zn mineralization.These features suggest a medium-high temperature and a medium salinity for the ore-forming fluids.H-O isotopic data indicates that the ore-forming fluids were mainly from the metamorphic and magmatic water,plus minor formation water.And sulfur isotopic data indicates that sulfur was mainly derived from the formation and magmatic rocks.Metallogenesis of the disseminated-banded mineralization was mainly correlated with fluid mixing and water-rock reaction;whereas that of the massive-veined mineralization was mainly correlated with fluid boiling.The genetic type of the deposit is a medium-high temperature hydrothermal deposit related to magmatism and controlled by shear zones.This study is beneficial to understand the stratiform copper deposit.

Space physics and astronomy research from Chinese polar stations: current and future directions

Space weather has a remarkable effect on modern human activities,e.g.,communication,navigation,space exploration etc.Space physics study from polar stations is as an important part of the entire solar-terrestrial space,and conducts quantitative research from the perspective of overall space plasma behavior.One of the most important issues is to identify the dominant processes that transfer plasma and momentum from the solar wind to Earth’s magnetosphere.Thus,it is necessary to carry out research for combination the observations from polar ground stations and spacecraft observations in the space.Observations at polar regions can be as a window to the space for satellite traffic controls.The operation of the observation chain―Zhongshan-Taishan-Kunlun Station could monitor polar space debris in a large area with high temporal and spatial resolution.Also,night-time measurements of astronomical seeing at Dome A in Antarctica make it less challenging to locate a telescope above it,thereby giving greater access to the free atmosphere because of a thinner boundary layer.

青少年高度近视Dome征伴黄斑区视网膜下积液的多模式影像特征

目的:观察青少年高度近视圆顶样黄斑(简称Dome征)伴黄斑区视网膜下积液(SRF)的多模式影像特征,探讨其典型特征与鉴别方法。方法:回顾性研究。选取2021-01/2022-05于我院确诊为高度近视Dome征伴黄斑区SRF的青少年患者21例39眼,行彩色眼底照相(CFP)、眼底自发荧光(FAF)、频域光学相干断层扫描(SD-OCT)、光学相干断层扫描血管成像(OCTA)及眼电图(EOG)检查,其中18例36眼患者行荧光素眼底血管造影(FFA)检查,随访12mo,记录中心凹下视网膜厚度(CMT)变化情况。结果:眼底检查可见患眼均呈高度近视豹纹状改变,中心凹可见颗粒样物质沉积;SD-OCT检查显示黄斑区全层呈圆顶样隆起,中心凹下神经上皮层局限性脱离,外界膜内表面可见中高反射附着,视网膜色素上皮(RPE)层反射不均匀;FAF检查显示黄斑区呈轻度“牛眼征”改变;FFA检查显示黄斑区拱环周围环绕颗粒状透见荧光;OCTA检查的En face图中可见清晰的神经上皮脱离区边界,切线对应椭圆体带-RPE分层面,可见神经上皮脱离区内散在大小不一的颗粒状高反射,未见明显脉络膜新生血管(CNV)形成,OCTA检查随访可见黄斑区SRF可存在无规律的自行增多或吸收;EOG检查显示光峰与暗谷(LP/DT,或称Arden比)比值正常,均>1.55。基线、随访1、3、6、12mo,纳入患者CMT(246.95±11.46、247.10±13.03、246.62±12.23、248.05±14.00、247.92±11.66μm)无显著差异(F=0.144,P=0.965)。结论:多模式影像检查有助于青少年高度近视Dome征伴黄斑区SRF的临床诊断,并且在与典型Best病病变前期的鉴别诊断中发挥重要作用。

Construction Technology of Biodigesters in Senegal

Faced with the depletion of fossil energy resources and given the current context of the fight against climate change, Renewable Energies (RE) represent an increasingly growing challenge. Of all these energies, those resulting from the biomethanization of biomass now provide an opportunity in the world of farmers and breeders. The treatment of agro-pastoral residues by anaerobic digestion has been the subject of renewed interest in recent years, thanks in particular to the production of energy from biomass, not to mention the production of fertilizers from effluents. Expelled from the digesters. This method of transformation offers many environmental, socio-economic and agricultural interests. Indeed, the biogas obtained from organic matter allows, among other things, to cook, light houses, and produce electricity and heat. The objective of this study is to compare the construction techniques and costs of the biodigester models that exist in Senegal. There are many biodigesters, the choice of an installation depends on the available space and the nature of the soil. Several types of biodigester technologies are installed in Senegal. The GGC 2047 fixed dome, the RMB geomembrane and the BEG geomembrane. First we will describe the construction techniques of the modified GGC model fixed dome biodigester, then of the RMB model geomembrane and finally of the BEG model geomembrane.

ICESat卫星及其在南极Dome A地区的应用

概述了GLAS高度计的在轨性能,分析了其数据产品的精度。利用高精度的ICESat卫星测高数据,以及第21次中国南极科学考察内陆冰盖考察GPS的实测资料,验证了此次考察中南极内陆冰盖Dome A最高点可能区域选取的正确性,并分析了Dome A最高点位置测定的准确性。