不唯书、不唯众、不唯上、只唯实--专访广州大学经管学院潘蜀健院长

十五年前，我国房地产业借住房制度改革的契机，刚刚萌芽之际，一位学者就在广州创办了全国最早的房地产经营管理专业，他就是现任广州大学经济管理学院院长——潘蜀健教授。他是“全国高等学校房地产专业指导委员会筹备组”的三位成员之一、“全国高校工程管理专业指导委员会”委员、广东省政府参事、广州市房地产协会副会长、广州市城市科学研究会副会长，他为系统地培育房地产开发及管理人才、为房地产学科     

回宏亮成功在于选择

回宏亮来自深圳，从业15年来，先后在包括全国最大的计算机公司、全国增长最快的保健品公司、全国最大的物业管理公司、全球最大的高尔夫球会等6家国内外一流企业担任职业经理人。他曾经因为一句“没什么大不了的”广告词而成为深圳“广告三剑客”之一，如今，他又顺利晋级如新全国首批销售总监。一个人在一个行业中取得成功已属不易，在多个行业成功更是难得，当我问他原因何在的时候，他自信地回答说——     

“斋月”在埃及

世禅同志: 文明古国埃及有许多异风特俗,其中之一就是传统的宗教祭礼月——“斋月”。伊斯兰教是埃及的国教。全国有百分之九十二的人口信仰伊斯兰教。传说安拉(真主)在伊斯兰教创始人穆罕默德四十岁那年的伊斯兰历九月,把“可兰经”内容传授给他。他受到启示,自称为“安拉的使者”,开始了传教活动。穆斯林为了表示纪念,就在     

高瞻远瞩领航大气科学严谨求真诠释科学道德--记2005国家最高科学技术奖获得者、中国科学院院士叶笃正

在今年1月9日全国科学技术大会上,国科学院叶笃正院士荣获“国家最高科学技术奖”。我作为他在20世纪60年代直接指导的一名研究生,衷心祝贺叶先生在他90大寿之际获此殊荣。叶笃正是世界著名的气象学家,是中国现代大气科学奠基人之一。他在罗斯贝波的能量频     

播“火”记——张成如博士领办高新技术企业报效国家受表彰

说起理学博士张成如,不仅在济南高新区颇有名气,而且在全国“火炬计划”战线上也是声名日盛。他不但取得了许多国际领先水平的学术和科研成果,而且成功地创办了高新技术企业——“星火科学技术研究院”,并荣获“济南市青年学术带头人”和山东省委、省政府授予的“十佳民营科技企业家”称号,成为“中国民营科技促进会”的理事之一。     

不唯书、不唯众、不唯上、只唯实——专访广州大学经管学院潘蜀健院长

十五年前,我国房地产业借住 房制度改革的契机,刚刚萌芽之 际,一位学者就在广州创办了全国 最早的房地产经营管理专业,他就 是现任广州大学经济管理学院院 长——潘蜀健教授。他是“全国高 等学校房地产专业指导委员会筹 备组”的三位成员之一、“全国高 校工程管理专业指导委员会”委 员、广东省政府参事、广州市房地 产协会副会长、广州市城市科学研 究会副会长,他为系统地培育房地 产开发及管理人才、为房地产学科 体系的建设和房地产业的健康发 展,做了卓越的贡献,先后荣获广 州市模范教师、南粤优秀教师、广 州市劳模、广东省劳模、全国模范 教授等称号。 十余年里,潘教授所创办的这     

力图恢复信誉继续“里根革命”——简评里根《国情咨文》

里根这次《国情咨文》是对他“总统竞技状态”的考验。从内容上看,新东西不多,值得注意的是他提出了“加强美国竞争能力的全面建议”,还提出了“一项新的全国福利战略”。但是,里根的形势已今非昔比,他不那么容易实现他的目标。     

控制宏论著春秋

人们只知道他曾经是统领全国科技大军的国务委要员,却很少提及他“两院”院士的头衔。著名科学家钱学森说:“现在中国的控制论权威是宋健”。     

试论郑板桥的“矛盾人格”

郑板桥是“扬州八怪”之一，他的“怪异”除了人们所说的另辟蹊径和离经叛道之外，我认为还有一个重要的原因就是他的“矛盾人格”。本文着重论述他的“矛盾人格”的表现：率真而又伪情、狂放而又收敛、愤世而又随俗。     

绍兴市：注重创新 培育特色

绍兴市是我省唯一的“全国技术创新工程示范城市”、全国首批四个“重要技术标准研究试点城市”之一、“全国制造业信息化工程重点城市”，并已连续五次被授予“全国科技进步先进市”称号，科技综合实力、科技进步水平位居全省第三位……2005年。更是绍兴科技工作的丰收年。     

Influence of Te doping on the dielectric and optical properties of InBi crystals grown by directional freezing

Stoichiometric pure and tellurium (Te) doped indium bismuthide (InBi) were grown using the directional freezing technique in a fabricated furnace. The X-ray diffraction profiles identified the crystallinity and phase composition. The surface topographical features were observed by scanning electron microscopy and atomic force microscopy. The energy dispersive analysis by X-rays was performed to identify the atomic proportion of elements. Studies on the temperature dependence of dielectric constant (?), loss tangent (tanδ), and AC conductivity (σ_ac) reveal the existence of a ferroelectric phase transition in the doped material at 403 K. When InBi is doped with tellurium (4.04 at%), a band gap of 0.20 eV can be achieved, and this is confirmed using Fourier transform infrared studies. The results thus show the conversion of semimetallic InBi to a semiconductor with the optical properties suitable for use in infrared detectors.     

Subsurface macro-inclusions and solidified hook character in aluminum-killed deep-drawing steel slabs

Subsurface macro-inclusions and hooks are detrimental to the surface quality of deep-drawing steel sheets. However, little is known about the relationship between macro-inclusions and hooks. Thus, in this work, two ultralow carbon (ULC) steel slabs and two low carbon (LC) aluminum-killed steel slabs were sampled to study the relationship between hooks and subsurface macro-inclusions, which were detected on the cross-sections of steel samples with an area of 56058 mm2 using an automated scanning electron microscopy/energy-dispersive X-ray spectroscopy system. Results show that subsurface inclusions larger than 200 μm were almost entrapped by hook structures, whereas the location of other inclusions smaller than 200 μm had no obvious dependence on the location of solidified hooks. Furthermore, the number density (ND) of subsurface inclusions larger than 200 μm decreased from 0.02 to 0 cm-2 in ULC steel as the mean hook depth decreased from 1.57 to 1.01 mm. Similar trends were also observed in LC steel. In addition, the detected inclusions larger than 200 μm were concentrated in the region near the slab center (3/8 width-5/8 width), where hook depths were also larger than those at any other locations. Therefore, minimizing the hook depth is an effective way to reduce inclusion-induced sliver defects in deep-drawing steels.     

Effects of basicity and MgO content on the viscosity of the SiO2-CaO-MgO-9wt%Al2O3 slag system

The effects of basicity and MgO content on the viscosity of SiO2-CaO-MgO-9wt%Al2O3 slags with basicity from 0.4 to 1.0 and MgO content from 13wt%to 19wt%were investigated using the rotating cylinder method. A correlation between the viscosity and the slag structure was determined by Fourier transform infrared （FTIR） spectroscopy. It is indicated that the complex network structure of the slag melt is depolymerized into simpler network units with increasing basicity or MgO content, resulting in a continuous decrease in viscosity of the slag. The viscosity is strongly dependent on the combined action of basic oxide components in the slag. Under the present experimental conditions, increasing the basicity is found to be more effective than increasing the MgO content in decreasing the viscosity of the slag. At higher temperatures, the increase of basicity or MgO content does not appreciably decrease the viscosity of the slag, as it does at lower tem-peratures. The calculated activation energy of viscous flow is between 154 and 200 kJ＆#183;mol-1, which decreases with an increase in basicity from 0.4 to 1.0 at a fixed MgO content in the range of 13wt%to 19wt%.     

Exploration on ecological regulation of the reservoirs

Reservoir regulation process in the Yangtze River basin is mainly divided into two types of flood regulation and initiating benefit regulation. The present reservoir management system and operation mode are mainly for dealing with or coordinating of flood control and benefit initiation as well as benefit distribution among various beneficial functions. From the view point of river ecosystem protection, the current regulation mode has two kinds of problems ： firstly, most of the reservoir regulation plans do not consider ecosystem protection at downstream of dams and needs of environment protection in reservoir areas; secondly, integrated regulation or management of water resources is ignored. It is very necessary to improve reservoir regulation mode, bearing problems faced by regulation of the Three Gorges reservoir and issues related to cascade development and regulation in Tuojiang and Minjiang River basins in mind. In accordance with the concept of scientific development, and the philosophy of ＂ensuring a healthy Yangtze River and promoting the harmony between human and water＂, taking flood control, benefit initiation and eco-system as a whole, this paper put forward the basic consideration to improve reservoir regulation as follows ： on the basis of requirements of ecosystem protection at downstream of dams and needs of environment protection in reservoir areas, we should bring the functions of reservoir such as flood control and benefit initiation into full play, control the negative influence to the ecosystem at downstream of dams and the environment in reservoir areas in an endurable scope, and restore the ecosystem and the environment step by step. This paper put forward the relevant regulation process aiming at the idiographic problems such as protection of ecosystem at downstream of dams and environment in reservoir areas, protection of aquatic wildlife species and fish species, regulation of sediment and protection of wetland.     

The principle of minimization of the equivalent load for design of launching vertical shiplift

Launching vertical shiplift is a type of shiplifts which have the advantages in characteristics of dynamics and statics, safety and simplicity in operation. But their applications are limited as the scales of mechanical equipments are too large. This paper puts forward the principle of minimization of the equivalent load for the general layout design of launching vertical shiplifts, based on the analysis of the load probability of the main hoists and their key mechanical equipments. The principle aims at determining the optimal weight of counterweight so that the equivalent loads of the main hoists of shiplifls are minimized, and larger ships are permitted to pass through. The theory and method presented in this paper have been applied in the design of the first step and third step shiplifts of the Goupitan Hydro Power Station. This has resulted in the breakthrough of the design and manufacture of launching vertical shiplifts so that the ships with tonnage of 500 t can pass through hydro dams for this type of shiplifts, comparing with the largest launching shiplift in Yantan Hydro Power Station with the 250 t shiplift.     

Cache performance optimization of irregular sparse matrix multiplication on modern multi-core CPU and GPU

This paper focuses on how to optimize the cache performance of sparse matrix-matrix multiplication （SpGEMM）.It classifies the cache misses into two categories：one is caused by the irregular distribution pattern of the multiplier-matrix,and the other is caused by the multiplicand.For each of them,the paper puts forward an optimization method respectively.The first hash based method removes cache misses of the 1 st category effectively,and improves the performance by a factor of 6 on an Intel 8-core CPU for the best cases.For cache misses of the 2nd category,it proposes a new cache replacement algorithm,which achieves a cache hit rate much higher than other historical knowledge based algorithms,and the algorithm is applicable on CELL and GPU.To further verify the effectiveness of our methods,we implement our algorithm on GPU,and the performance perfectly scales with the size of on-chip storage.     

A study on the characterization of smoke movement in shafts with different fire source positions

In this study, experimental and numerical simulation methods were combined to simulate the changing course of the temperature and velocity fields in nine different fire scenes. The characteristics of smoke movement in shafts with different fire source position factors （h/H） were quantitatively investigated, and the non-dimensional fitting function between the fire source position factors and the maximum temperature was deduced. The results showed that the location of the neutral plane moved upward as the fire source rose, and all the generated smoke spread to the upper areas; however, there was barely any smoke in the lower areas. The maximum temperature was inversely proportional to the fire source position factor; the higher the source position is, i.e. the higher the ra- tio factor is, the lower the maximum temperature is in the shaft. The experimental verification of the fire dynamics simulator （FDS） showed good results.     

Full-scale model tests and nonlinear analysis of prestressed concrete simply supported box girders

Full-scale model tests were carried out on a 30 m span prestressed concrete box girder and a 20 m span prestressed concrete hollow slab. Failure models were prestressed reinforcement tensile failure and crashing of roof concrete, respectively. The ductility indexes of the box girder and hollow slab were 1.99 and 1.23, respectively, according to the energy viewpoint. Based on the horizontal section hypothesis, the nonlinear computation procedure was established using the limited banding law, and it could carry out the entire performance analysis including the unloading, mainly focusing on the ways to achieve the unloading curves computation through stress-strain, moment-curvature and load-displacement curves. Through the procedure, parameters that influence on the bearing capacity, deformation performance and ductility of the structures were analyzed. Those parameters were quantity of prestressed reinforcement and tension coefficients of prestressed reinforcement. From the analysis, some useful conclusions can be obtained.     

A dynamic programming algorithm for network selection in 3G/WLAN

An essential characteristic of the 4th Generation （4G） wireless networks is integrating various heterogeneous wireless access networks.This paper considers the network selection for both admission and handoff strategy problems in heterogeneous network of 3G/WLAN.A novel dynamic programming algorithm is proposed by taking heterogeneous network characteristics,user mobility and different service types into account.The specificity of our approach is that it puts the situations in a new model and makes decisions in stages of different states.Simulation results validate that the proposed scheme can obtain better new call blocking and handoff dropping probability performance than traditional schemes while ensuring quality-of-services （QoS） for both real-time and data connections.