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Capital Investment & financing: a practical guide to financial evaluation

2005年

作者： Agar, Chris f

ISBN: (数字)9780080476384

ISBN: (纸本)9780750665322

The requirement to maximise value for shareholders is at the core of any corporate investment or financing decision. The intrinsic value of proposed investments should be assessed before deciding how much capital to allocate; the benefits and risks associated with each available source of finance should be considered when capital is being raised; and capital, and any associated financial risks, should be managed in a way that continues to maximise value. At every stage, an analysis should be carried out to ensure the decision is optimal for shareholders and other capital *** book provides practical guidance on the application of financial evaluation techniques and methods (mainly covered in Appendices), as well as comprehensive coverage of traditional corporate finance topics, discussed in the context of capital investment, raising and management and financial risk management (using derivatives). Models, formulae and other quantitative techniques are illustrated in over 100 examples (using only basic mathematics). Topics discussed include the following:* business appraisal using financial ratios* corporate valuation (mainly discounted cash flow and real options)*investment appraisal techniques* acquisition structuring and evaluation* the nature of loans and loan agreements* features and pricing of bonds (straight and convertible)* leasing (including leveraged leasing)* equity raising (Initial Public Offerings)* long and short term capital management* basic pricing of derivatives (forwards, futures, options, swaps)* interest rate and currency risk management using derivativesCapital Investment & financing provides a comprehensive, in-depth coverage of concepts, methods and techniques involved when evaluating acquisitions and other investments, assessing financing opportunities, and managing capital. The core chapters provide practical guidance on key corporate finance topics; the Appendices contain more quantitative material, focusing on pricing techniq

关键词： Capital investments.

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Graph Transformer for Communities Detection in Social Networks

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Computers, Materials & Continua 2022年第3期70卷 5707-5720页

作者： G.Naga Chandrika Khalid Alnowibet K.Sandeep Kautish E.Sreenivasa Reddy Adel f.Alrasheedi Ali Wagdy Mohamed Department of Computer Science and Engineering ANU College of Engineering and TechnologyGuntur522510India Statistics and Operations Research Department College of ScienceKing Saud UniversityRiyadh11451Kingdom of Saudi Arabia LBEf Campus Kathmandu44600Nepal Department of Computer Science and Engineering ANUGuntur522510India Operations Research Department Faculty of Graduate Studies for Statistical ResearchCairo UniversityGiza12613Egypt Wireless Intelligent Networks Center(WINC) School of Engineering and Applied SciencesNile UniversityGiza12588Egypt

Graphs are used in various disciplines such as telecommunication,biological networks,as well as social *** large-scale networks,it is challenging to detect the communities by learning the distinct properties of the *** deep learning hasmade contributions in a variety of domains,we try to use deep learning techniques to mine the knowledge from large-scale graph *** this paper,we aim to provide a strategy for detecting communities using deep autoencoders and obtain generic neural attention to *** advantages of neural attention are widely seen in the field of NLP and computer vision,which has low computational complexity for large-scale *** contributions of the paper are summarized as ***,a transformer is utilized to downsample the first-order proximities of the graph into a latent space,which can result in the structural properties and eventually assist in detecting the ***,the fine-tuning task is conducted by tuning variant hyperparameters cautiously,which is applied to multiple social networks(facebook and Twitch).furthermore,the objective function(crossentropy)is tuned by L0 ***,the reconstructed model forms communities that present the relationship between the *** proposed robust model provides good generalization and is applicable to obtaining not only the community structures in social networks but also the node *** proposed graph-transformer shows advanced performance on the social networks with the average NMIs of 0.67±0.04,0.198±0.02,0.228±0.02,and 0.68±0.03 on Wikipedia crocodiles,Github Developers,Twitch England,and facebook Page-Page networks,respectively.

关键词： Social networks graph transformer community detection graph classification

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Perspectives on diagnosis and surgical treatment of congenital cervical malformations

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Science Bulletin 2022年第19期67卷 1935-1938页

作者： Yiying Sun Grigoris f.Grimbizis Lan Zhu Department of Obstetrics and Gynecology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100032China 1st Department of Obstetrics and Gynecology Medical FacultyAristotle University of ThessalonikiPapageorgiou General HospitalThessaloniki 56403Greece

Malformations of the female lower genital tract are congenital deviations from normal anatomy caused by abnormal development of the Müllerian ducts and urogenital *** malformations may cause troublesome symptoms in adolescent girls after puberty and have substantially negative impact on their reproductive potential and mental *** cervical malformations(CCMs)are the most challenging and complicated entity in this *** are caused by abnormal bilateral Mullerian fusion and later canalization,manifested by the absence or underdevelopment of the cervix,leading to the obstruction of the cervical canal for evacuation of menses at *** prevalence ranges from 1/80,000 to 1/100,000[1],and approximately half of patients coexist with congenital vaginal agenesis[2].

关键词： anatomy congenital cervical

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Influence of processing parameters on laser metal deposited copper and titanium alloy composites

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Transactions of Nonferrous Metals Society of China 2015年第8期25卷 2608-2616页

作者： Mutiu f.ERINOSHO Esther T.AKINLABI Sisa PITYANA Department of Mechanical Engineering Science University of Johannesburg Auckland Park Kingsway Campus National Laser Centre Council for Scientific and Industrial Research (CSIR)

The laser metal deposition （LMD） was conducted on copper by varying the processing parameters in order to achieve the best possible settings. Two sets of experiments were conducted. The deposited composites were characterized through the evolving microstructure, microhardness profiling and mechanical properties. It was found that the evolving microstructures of the deposited composites were characterized with primary, secondary and tertiary arms dendrites, acicular microstructure as well as the alpha and beta eutectic structures. from the two sets of experiments performed, it was found that Sample E produced at a laser power of 1200 W and a scanning speed of 1.2 m/min has the highest hardness of HV （190±42） but exhibits some lateral cracks due to its brittle nature, while Sample B produced at laser power of 1200 W and a scanning speed of 0.3 m/min shows no crack and a good microstructure with an increase in dendrites. The strain hardening coefficient of the deposited copper composite obtained in this experiment is 3.35.

关键词： copper composites laser metal deposition mechanical properties strain hardening

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人Ha-ras基因中蛋白质特异结合DNA位点的鉴定

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生物化学杂志 1989年第6期5卷 497-502页

作者：王智 f.f.Becker 中国医学科学院基础医学研究所德州大学 M.D.Anderson肿庙研究所分子病理系

利用迁移率改变法和DNaseⅠ足纹法观察了Ha-ras癌基因5’端上游序列与特异结合蛋白的相互作用。用限制性内切酶XmaⅠ消化6.6kb Ha-ras基因得到约10个片段,进行3’-末端标记,与T24细胞核提取液反应,经低离子强度聚丙烯酰胺凝胶电泳,发现... 详细信息

利用迁移率改变法和DNaseⅠ足纹法观察了Ha-ras癌基因5’端上游序列与特异结合蛋白的相互作用。用限制性内切酶XmaⅠ消化6.6kb Ha-ras基因得到约10个片段,进行3’-末端标记,与T24细胞核提取液反应,经低离子强度聚丙烯酰胺凝胶电泳,发现与蛋白质特异结合的416bp片段,位于Ha-ras基因5’-端上游1230—1646区域内,靠近转录起始点1660bp处(CAP位置)。另一个与蛋白质特异结合的389bp片段,位于转录起始点上游162—551处。

关键词： DNA结合蛋白 Ha-ras癌基因

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CONTROL Of STRONG SHOCK—TURBULENT BOUNDARY LAYER INTERACTION IN RECTANGULAR CHANNELS

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Chinese Journal of Aeronautics 1992年第1期 5-11页

作者： He Z W, Li f B (Nanjing Aeronautical Institute, Nanjing, 210016)

Under initial conditions of Ma= 1.63 and δ= 5.65mm, the controlling techniquesof strong shock-turbulent boundary layer interactions in rectangular channels are investigatedsystematically in this paper. It is found that for an effective improvement on boundarylayer parameters and reducing the turbulence level of flow downstream ofshock-boundary layer interaction, the bleed mass flow G = 2～2.5%, and the width of suctionslot W/δ= 0.88 and its position of L / δ= 1.77 are the most suitable values amongthe G, W /δ, L/ δand B studied. Experiments reveal that for improving the steadyand dynamic characteristics of flow in the channels it is necessary for channels with highvalue of Bto control effectively the strong shock-boundary layer interaction.

关键词： CONTROL Of STRONG SHOCK TURBULENT BOUNDARY LAYER INTERACTION IN RECTANGULAR CHANNELS

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In situ electron holography of the dynamic magnetic field emanating from a hard-disk drive writer

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Nano Research 2015年第4期8卷 1241-1249页

作者： Joshua f. Einsle Christophe Gatel Aurelien Masseboeuf Robin Cours Muhammad A. Bashir Mark Gubbins Robert M. Bowman Etienne Snoeck Centre for Nanostructured Media School of Mathematics and Physics Queen's University Belfast Belfast BT7 1NN UK CEMES-CNRS 29 rueJ. Marvig 31055 Toulouse France Universite de Toulouse Paul Sabatier 118 route de Narbonne 31062 Toulouse Cedex 9 France Seagate Technology I Disc Drive Springtown Industrial Estate Derry City Co. BT48 OBF Londonderry UK

The proliferation of mobile devices in society accessing data via the ＂cloud＂ is imposing a dramatic increase in the amount of information to be stored on hard disk drives （HDD） used in servers. forecasts are that areal densities will need to increase by as much as 35% compound per annum and by 2,020 cloud storage capacity will be around 7 zettabytes corresponding to areal densities of 2 Tb/in^2. This requires increased performance from the magnetic pole of the electromag- netic writer in the read/write head in the HDD. Current state-of-art writing is undertaken by morphologically complex magnetic pole of sub 100 nm dimensions, in an environment of engineered magnetic shields and it needs to deliver strong directional magnetic field to areas on the recording media around 50 nm × 13 nm. This points to the need for a method to perform direct quantitative measurements of the magnetic field generated by the write pole at the nanometer scale. Here we report on the complete in situ quantitative mapping of the magnetic field generated by a functioning write pole in operation using electron holography. The results point the way towards a new nanoscale magnetic field source to further develop in situ transmission electron microscopy.

关键词： electron transmissionmicroscopy off-axis electronholography in situ magnetic field magnetic recording hard disk write pole

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Numerical Simulation of the Tip Aerodynamics and Acoustics Test

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Journal of Thermal Science 2016年第2期25卷 153-160页

作者： f Tejero E P Doerffer O Szulc J L Cross The Szwalski Institute of fluid-flow Machinery Polish Academy of Sciences. Fiszera 14 80-231 Gdansk Poland NASA Ames Research Center (retired) Moffett Field CA USA

The application of an efficient flow control system on helicopter rotor blades may lead to improved aerodynamic performance. Recently, our invention of Rod Vortex Generators(RVGs) has been analyzed for helicopter rotor blades in hover with success. As a step forward, the study has been extended to forward flight conditions. for this reason, a validation of the numerical modelling for a reference helicopter rotor(without flow control) is needed. The article presents a study of the flow-field of the AH-1G helicopter rotor in low-, medium- and high-speed forward flight. The CfD code fLOWer from DLR has proven to be a suitable tool for the aerodynamic analysis of the two-bladed rotor without any artificial wake modelling. It solves the URANS equations with LEA(Linear Explicit Algebraic stress) k-ω model using the chimera overlapping grids technique. Validation of the numerical model uses comparison with the detailed flight test data gathered by Cross J. L. and Watts M. E. during the Tip Aerodynamics and Acoustics Test(TAAT) conducted at NASA in 1981. Satisfactory agreements for all speed regimes and a presence of significant flow separation in high-speed forward flight suggest a possible benefit from the future implementation of RVGs. The numerical results based on the URANS approach are presented not only for a popular, low-speed case commonly used in rotorcraft community for CfD codes validation but preferably for medium- and high-speed test conditions that have not been published to date.

关键词： AH-1G TAAT helicopter rotor forward flight chimera overlapping grid

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Lightning Overvoltages on Rural Distribution Lines

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高电压技术 2008年第12期34卷 2564-2569页

作者： A. Piantini D. M. Duarte f. Romero CENDAT-IEE/USP University of Sao Paulo Av. Prof. Luciano Gualberto 1289 Sao Paulo Brazil

This paper presents information concerning the characteristics of lightning overvoltages on overhead power distribution *** on the protection measures against transients caused by both direct and indirect strokes is a... 详细信息

关键词：农村配电线路雷电过电压保护间接雷击

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为温压工艺设计的混合粉

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粉末冶金技术 1998年第1期16卷 40-51页

作者： S.St-Laurent f.Chagnon 言小雄加拿大魁北克金属粉末有限公司南海永联工业资源有限公司

在工业生产用压机的压制条件下，对为温压设计的经粘结剂处理的材料的性能进行了研究，定量地探讨了粉末温度对压制压力的一致性、稳定性和对零件的生坯与烧结件性能的影响。评价了混合粉对温度波动和生产中断的承受能力。

关键词：温压粘结剂处理性能稳定性混合粉

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