16 resultados para REUSE
em Chinese Academy of Sciences Institutional Repositories Grid Portal
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Software Engineering Society of Korean; Institute for Information Scientists and Engineers; IEEE Reliability Society; KAIST (Korea Advanced Institute of Science and Technology); Korea Information Promotion Agency; Samsung SDS
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为给软件产品线决策者应用软件产品线模型提供理论上的参考,综合分析比较了近年来的20种软件产品线模型,在对软件产品线模型的投资循环、重用方式、货币时间价值、经济函数、成本因子和重用成本等方面因素进行细致分析的基础上提出了软件产品线模型的比较框架,在该框架内着重分析了其中5种典型的软件产品线模型,对应用软件产品线开发方式的成本估算和投资分析做了细致分析,并对当前软件产品线模型时存在的问题和发展方向进行了探讨.
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当前的CAD工具缺乏对构思活动中各种设计知识的有效建模,造成设计方案难以在后续工作中灵活、快速地复用.采用基于草图界面的自然交互方式,通过对设计过程中草图信息的分析与建模实现对设计过程的描述;在复用过程中向用户提供推荐方案,支持设计意图的自然表达和方案的灵活复用,从而降低用户认知负担.实验结果表明,这种基于草图信息分析与建模的设计方案能满足敏捷设计的需要,实现了设计方案的灵活复用.
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针对当前CAD软件对设计知识重用支持不足且大多基于WIMP交互方式等问题,设计并实现一个基于知识重用的服装工艺设计系统。该系统框架主要包括知识推荐和知识编辑2个模块。针对知识推荐和知识编辑,分别提出基于草图相似性的实时知识推荐算法和基于笔手势的知识编辑方法,给出系统的应用实例。该系统已应用于北京某羊绒企业的生产中,实践表明该系统能改善人机交互,提高设计效率。
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Scan test can be inserted around hard IP cores that have not been designed with DFT approaches. An 18x18 bits Booth Coding-Wallace Tree multiplier has been designed with full custom approach with 0.61 m CMOS technology. When we reuse the multiplier in another chip, scan chain has been inserted around it to increase the fault coverage. After scan insertion, the multiplier needs 4.7% more areas and 24.4% more delay time, while the fault coverage reaches to 95%.
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氮杂环化合物大多数都是具有生理活性的物质,例如喹喔啉化合物与苯二氮卓类化合物,因此研究氮杂环化合物骨架的构建方法具有一定意义。绿色化学的迅速发展迫切要求化学家发展清洁、经济和环境较友好条件下的有机合成方法。其中,水相反应与绿色固体酸催化剂的使用都是实现绿色有机合成的重要途径,它们非常具有潜力,近些年受到了广泛关注。本论文的主要工作是围绕水相及固体酸催化条件下两类具有生物活性的含氮杂环小分子的合成方法而开展的,具体包括以下内容: 1. 研究和探索出了两类绿色固体酸催化剂蒙脱土(Mont. K-10)和杂多酸(H4SiW12O40), 在水相条件下成功合成出喹喔啉化合物的有效方法。两个催化体系都以无毒无公害的水作反应溶剂,实验条件温和,操作安全简便,反应速度快,底物普适性强,产率高,且产物易分离收集。两类固体酸催化剂,对设备腐蚀性小,可回收循环使用,对环境无公害; 蒙脱土催化大部分底物能得到当量产率的产物,硅钨酸催化催化剂负载量小。 2. 实现了无溶剂条件下,以杂多酸(H3PW12O40)作催化剂,高效合成1,5-苯二氮卓衍生物的合成方法。该催化体系具有以下一些优势:实验条件温和,反应速度较快,底物普适性良好,产物易分离收集,反应过程中没有加入其它有机溶剂,绿色环保。 ‘Green Chemistry’ is currently a major issue of modern chemistry. It is widely acknowledged that there is a growing need for more environmentally acceptable processes in the chemical industry. New green catalysts and green reaction media are the important and efficient strategies in green chemistry. New green catalysts include solid acid catalysts, solid base catalysts, metal catalysts not only possess higher activity and selectivity, but also are easily separated from reaction system. Green reaction media include water, supercritical fluids and ionic liquids can not only substitute traditional toxic and harmed organic solvents, but also improve reaction activity and selectivity. Meanwhile water is a promising green reaction medium for use in modern chemistry because it has a number of advantages such as the cheapest solvent available on earth, being non-hazardous and non-toxic to the environment. Solid acids had also attracted much attention for realizing green chemistry due to their unique acidity, high activity and efficiency as organic catalysts. Nitrogen-containing heterocyclic compounds of different ring sizes such as quinoxaline and benzodiazepine are the important pharmacologically active compounds. Due to the wide biological significance of these compounds, the synthesis of these types of compounds have received a great deal of attention. Despite the large availability of methods to construct nitrogen-containing heterocyclic compounds, there is still a strong need to further explore green methods to efficiently and safely synthesize these compounds. Thus, we aim at developing efficient and green methodology for the synthesis of quinoxaline and benzodiazepine carried out under water condition with solid acid catalysts. The contents of this dissertation are listed as the following: 1. We have developed two catalytic systems for the synthesis quinoxaline via the condensation of an aryl 1,2-diamine with a 1,2-diketone compound in the presence of Mont. K-10 or H4SiW12O40 as a catalyst in water solvent. Both of these two methods can be applied to wide range of substrates, tolerating aryl 1,2-diamine/1,2-diketone with the electron donating/drawing substituent. Operational simplicity, the ambient conditions, use of an economically convenient catalyst, use of water as a desirable solvent, high yields and short reaction times are the key features of these two protocols. 2. We developed a convenient and efficient protocol for the synthesis of a variety of 1,5-benzodiazepines in high yields via condensation of aryl o-phenylenediamine derivatives with a variety of ketones using H3PW12O40 as a green recyclable and heterogeneous catalyst under solvent-free condition. The simple experiment procedure combined with ease of recovery and reuse of this catalyst make this procedure quite simple, more convenient and environmentally benign.
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制革行业是轻工行业中仅次于造纸业的高耗水、重污染行业,作为劳动密集型行业,在解决大量人口就业问题的同时,也对所在地区环境造成了严重污染。目前我国制革行业每年排放废水8,000~12,000万吨,废水中含铬约3,500 t,SS为1.2×105 t,COD为1.8×105 t,BOD为7×104 t,对水体污染严重。 本研究在对厌氧酸化工艺进行研究、一级好氧处理段进行工艺比选研究的基础上,获得了匀质调节—SBBR—BAF的生物处理工艺,并依托该工艺进行了生物强化处理的研究,考察了菌剂的强化运行效果及其处理水回用的可行性。 研究表明,在进水COD>3,000 mg/L,厌氧酸化具有很好的抗冲击作用,保证了好氧工艺出水COD<200 mg/L;在进水COD<3,000 mg/L,可只通过好氧处理实现出水COD<200 mg/L。厌氧酸化停留时间选择不当,会导致厌氧出水硫化物浓度升高,严重影响好氧系统,会使好氧活性污泥因中毒而解絮。 研究表明,当进水COD为2,000~2,500 mg/L,NH4+-N为130~146 mg/L时,COD、NH4+-N去除率SBBR分别为93.8%~96.6%和14.5%~55.9%,SBR分别为88.8%~94.9%和13%~50.7%,表明SBBR优于SBR。同时,研究发现SBBR污泥增长率为0.05 kgVSS/kgCOD,仅为SBR0.57 kgVSS/kgCOD的8.8%。此外,研究发现SBBR在停止运行后经3个运行周期可回复原油能力,而SBR池经9个周期培养也不能恢复,说明SBBR恢复能力明显优于SBR。 研究表明,以匀质调节—SBBR—BAF为主的制革废水处理工艺,出水水质稳定,进水COD 801~2,834 mg/L、NH4+-N 87~203 mg/L,出水COD<80 mg/L、NH4+-N<10 mg/L,基本达到中水回用标准;操作简单灵活,没有污泥回流系统,污泥产率低,污泥处理费用低;工艺基本不需要添加化学药剂,既节约成本、又避免了二次污染;两级生物膜使得该工艺具有很强的耐冲击负荷能力,特别适合制革废水水质水量波动大的特点。 研究表明,高效菌对系统的启动具有一定的促进作用,强化系统生物膜6天可以成熟,对照系统生物膜9天可以成熟。同时高效菌能加速COD降解,缩短停留时间,强化系统6~8 h可使COD<200 mg/L,对照系统8~10 h可使COD<200 mg/L。长期运行表明,强化系统的SBBR在COD和NH4+-N的去除率都优于对照系统的SBBR。最终出水COD强化系统平均为53 mg/L、对照系统为74 mg/L。在模拟循环过程中,强化系统均有更高的稳定性。可实现8次理论循环,而对照系统只能实现4次理论循环。 研究表明,通过合理的工艺设计,可以实现猪皮制革废水达到《污水综合排放标准GB8976-1996》一级标准,同时满足工厂部分用水要求。通过添加高效微生物,可提高生物处理系统处理能力,使处理水能够满足工厂的多次回用。 As a labour-intensive industry, tanning has created large amount of working opportunities as well as caused severe contamination to environment. And it is one of the highest water-consuming and polluting industry, only second to manufacturing. At present time, Chinese leather industry emits wastewater about 80,000,000~120,000,000 t annually, which contains chromium about 3,500 t, SS 1.2×105 t, COD 1.8×105 t, BOD 7×104 t and ambient riverhead has been polluted greatly. Based on the research of anaerobic acidification and comparison of SBBR and SBR, biotreatment process (Homogenization—SBBR—BAF) had been established to amend the disadvantages of traditional sewage treatment such as too much sludge, high cost of advanced treatment and NH4+-N can not reach the emission standard. Research on the bioaugmentation was also been carried out. Researches showed, when COD of influent was beyond 3,000 mg/L, anaerobic acidification could resist strong impact, thus COD of effluent was less than 200 mg/L; when COD of influent was less than 3,000 mg/L, only throughout aerobic sewage treatment could COD of effluent beless than 200 mg/L. False residence tiome of anaerobic acidification would lead to the higher effluent concentration of sulfide and disintegration of aerobic activated sludge. Researches showed SBBR worked a better than SBR: when influent between 2,000 and 2,500 mg/L, NH4+-N between 130 mg/L and 146 mg/L, COD, NH4+-N removal rate of SBBR was 93.3%~96.6%, 14.5%~55.9% respectively while COD, NH4+-N removal rate of SBR was 88.8%~94.9%, 13%~50.7% respectively. Sludge growth rate of SBBR was 8.8% of that of 0.05 kgVSS/kgCOD. Besides, SBBR could recovered after 3 operating periods while SBR worked no better after 9 operating periods.Therefore, SBBR excelled SBR. Researches showed, effluent quantity of tannery wastewater treatment process (Homogenization—SBBR—BAF) was stable. When COD of influent was between 801 and 2,834 mg/L, NH4+-N was between 87 mg/L and 203 mg/L, COD of effluent was less than 80 mg/L, NH4+-N was less than 10 mg/L, which achieved the standard of reuse. This biotreatment was featured in low cost, easy and flexible management, less sludge, no inverse sludge system. Besides, this technique required no chemical, which could lower the cost and avoid secondary pollution. Great resistant of impact due to two membranes and was suitable for tannery wastewater which was featured by fluctuation of influent quality and quantity. Researches showed effective microorganisms promotes the startup of the process.Biofilm in the bioaugmentation process matured with 6 days while biofilm in normal process matured with 9 days. Effective microorganisms could accelerate the degradation of COD and shorten the residence time. Aggrandizement system could make COD<200 mg/L with 6 to8 hours while cntrolling system could make COD<200 mg/L with 8 to 10 hours. Long-term operating shows that SBBR in the bioaugmentation system worked better than the normal system in the treatment of COD and NH4+-N. The average COC of effluent in bioaugmentation system was 53 mg/L, normal system was 74 mg/L. In the simulative circulation process,aggrandizement process, which could fulfill 8 times theoretical circulation, works more stably than controlling process which could only fulfill 4 times theoretical circulation. Researches showed that reasonable design could make the wastewater meet the first grade of discharging standard of National Integrated Wastewater Discharge Standard (GB8976-1996), and partially meet the demand of water using of the factory. Adding effective microorganisms could enhance the biotreatment and make the effluents reuse many times.
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目前针织服装设计领域面临着日益加剧的市场竞争,传统的基于手工设计的研发模式已不能适应当前多品种、小批量、交货期短的市场需求。传统的计算机辅助设计软件(Computer Aided Design, 简称CAD)在服装行业得到广泛应用,但效果与期望值相差较远。传统设计软件多关注于设计结果的表达与重用,对于设计过程中的计算知识重用机制缺乏有效的支持;另外这些设计软件大多基于传统的WIMP范式的菜单或命令行交互方式,不符合人们用纸笔勾画的习惯,不利于计算机操作水平普遍较低的服装行业从业人员的使用。本文拟基于知识重用的设计思想,将笔交互技术引入到传统针织服装工艺设计过程中,设计并实现一个基于知识重用的针织服装工艺快速设计系统,进而提高服装设计的效率。 论文主要研究内容包括: (1)通过分析传统针织服装工艺设计过程特点,提出了基于知识重用的针织服装工艺快速设计过程模型,并分析了该过程模型的特点,建立了系统业务流程和系统框架; (2)针对设计案例形状知识的重用,研究了形状知识的表达和提取方法,针对典型款式的针织服装设计,提出了设计轮廓图的实例化算法实现了尺寸驱动功能,提出了基于草图相似度的设计案例推荐技术,该推荐技术分别采用特征点匹配和形状匹配实现了设计案例的推荐; (3)针对设计案例计算知识的重用,研究了计算知识的表达方法,设计了面向计算知识编辑的基于手势的笔式用户界面,改进了传统Radial布局算法对计算知识进行可视化呈现,以辅助设计者对计算知识的理解和编辑; (4)在上述研究的基础上,设计并实现了一个基于知识重用的针织服装工艺快速设计系统,经过实验评估,该系统相比于传统的CAD软件能显著提高设计效率。
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为了解决行业应用软件开发存在的问题,在全面分析研究行业应用软件和大量实践的基础上,提出了与组件业务建模(CBM)不同的组装业务建模(ABM)和样本程序,并设计了一个企业级的基于样本程序的领域开发平台来支持行业应用的开发和提升行业应用的开发效率与效果。平台通过组装业务建模(ABM)与组件业务建模(CBM)来驱动行业应用软件的开发,并通过样本程序来对行业应用软件的开发工作进行实际指导。实验结果表明了该平台能够有效地提高软件复用率,极大地缩短行业应用软件的开发周期,减少信息系统的成本支出。
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While Histograms of Oriented Gradients (HOG) plus Support Vector Machine (SVM) (HOG+SVM) is the most successful human detection algorithm, it is time-consuming. This paper proposes two ways to deal with this problem. One way is to reuse the features in blocks to construct the HOG features for intersecting detection windows. Another way is to utilize sub-cell based interpolation to efficiently compute the HOG features for each block. The combination of the two ways results in significant increase in detecting humans-more than five times better. To evaluate the proposed method, we have established a top-view human database. Experimental results on the top-view database and the well-known INRIA data set have demonstrated the effectiveness and efficiency of the proposed method. (C) 2010 Elsevier B.V. All rights reserved.
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The reuse of holdfasts for regeneration of young seedlings or using wild juvenile plants as the seedling source has played the major role in commercial cultivation of the brown alga Hizikia fusiformis in East Asia over the past 20 years. The possibility of employing zygote-derived germlings for producing seedlings has been discussed in the literature, but has not yet become a reality. Three main obstacles have limited the use of zygotes as a main source of seedlings, (1) the dioecious nature of the algal life cycle which may lead to asynchronous male and female receptacle development and thus different timing of egg and spermatozoa expulsion, (2) the low attachment rate when using zygote-derived germlings with developed rhizoids from wild parental plants for seeding production, and (3) the problem of culturing young germlings in regions where water temperature is high in summer. In this investigation, shifting the timing of receptacle formation earlier than in nature was performed by tumbling the algae in a long-day tank (16-h light per day). Synchronization of egg and spermatozoa expulsion and thereafter fertilization were conducted in indoor tanks. Receptacle formation in constant long days could be shifted by 20 days earlier than in plants cultured on long lines in the open sea, or I month earlier than in plants growing on intertidal rocks. Synchronized expulsion of eggs and spermatozoon led to a high rate of fertilization. This was achieved by tumbling the male and female receptacle-bearing branchlets in the same tank at low density in high irradiance. In two independent trials, a total of 1,400,000 zygote-derived germlings were obtained from 620 g (fresh weight) female sporophytes. The germlings shed from the receptacles were at an identical developmental stage indicating high synchronization of expulsion of eggs and spermatozoon followed by fertilization. Approximately 63% ( +/-9.6%) of the germlings were shed from the receptacle between 16 and 24 It after fertilization and 20% ( +/-11.9%) remained on the receptacle for 3 days after fertilization. Germlings were seeded on string collectors before rhizoids started to elongate and the attachment efficiency was enhanced. Young seedlings reached 800 ( +/-50) mum in length in 25 days at 25 degreesC before they were transferred to open sea cultivation. These results provide the basis of a practical way of seedling production by use of zygote-derived germlings in the commercial cultivation of Hizikia fusiformis. (C) 2004 Elsevier B.V All rights reserved.
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考虑一类同时具有再分销、再制造和再利用的闭环供应链在逆向物流流量不确定环境下的运作问题.采用具有已知概率的离散情景描述逆向物流流量的不确定性,利用基于情景分析的鲁棒线性优化方法建立该闭环供应链的多目标运作模型.设计了一个数值算例,其结果验证了运作策略的鲁棒性.在该算例基础上,分析了逆向物流流量的大小对闭环供应链系统运作性能的影响.
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提出了一种新的集成的I2 DEF方法 ,并介绍了与之配套的设计开发工具 ,用以支持大型复杂信息系统的设计与开发 ,它可以成功地解决计算机集成制造系统设计开发过程中遇到的许多问题。本文指出了我国CIMS工程存在的问题 ,分析了这些问题产生的原因 ,并结合企业实际给出了应用I2 DEF方法的解决方案。