理管机的研究与设计

阐述了国内外理管机的研究现状以及缺点,在理管机基本原理基础上重新设计,并设计了相应的辅助机构。

理管机颜色识别算法的研究

各工业领域中对机器视觉技术越来越青睐,在纺纱工业领域,理管机对纱管的识别技术的运用关键在于纱管颜色的识别,纱管的颜色特征容易辨别,并且颜色特征不会随传送带的运动而发生较大的改变,因此颜色信息被作为纱管主要的识别信息,这就要选取合适的颜色空间和颜色识别算法实时地进行纱管识别。文章主要研究RGB颜色空间模型到HSI颜色空间模型的转换,以及算法选择的判断。

理管机机器视觉摄像机结构设计

针对目前纺织业中理管机效率低、准确率和响应速度慢等问题,以理管机为研究对象,通过分析理管机的工作原理和机器视觉检测技术在理管机的应用,完成视觉系统结构设计以及软件设计。利用光学、摄像机理论知识根据纱管的特征以及理管机的机械特征,应用光学知识设计新的摄像机采集视频图像的位置和角度。该优化设计能够根据纱管和背景的移动采集到清晰的图像,利用图像处理软件,通过背景差分法获取前景图,以此对理管机的理管动作快速验证。结果表明,所设计的理管机机器视觉光源和摄像机可以采集到清晰有效的视频图像,使理管机能高效、准确、快速地进行理管动作,结构系统稳定。

HM-LG380B型集体落纱细纱机集中理管机的研制

为了减少集体落纱细纱工序用工,降低工人劳动强度,针对集体落纱细纱机的优点,分析了其理管系统的不足,介绍了HM-LG380B型集体落纱细纱机集中理管机及升级改造的系列产品的研制、特点及应用。指出:该系列理管机可根据用户需求,量身定制,且运行平稳,操作简单,能有效减少用工,降低工人劳动强度,经济效益良好。

多色自动理管机的设计与应用

在当今纺织企业用工困难的情况下,对传统自动络筒机生产出来的细纱纱管的收集整理工作,亟需一套自动化的设备来实现。为此,论述多色自动理管机的原理、组成特点以及在纺织企业中的实际应用情况。

呼吸机管理中心模式与常见的认识误区

针对既往医院呼吸机管理中存在的问题,就呼吸机的重要性,广泛性,突击性,贵重性、复杂性和风险性加以分析,采用呼吸机管理中心的方法,包括设备配置,网络人员培训并对其运行模式等加以探讨,确定各合作部门的功能定位和分工职责,以及今后发展规划,还利用本身实践经验,对几种常见的认识误区加以澄清,医工部门应是管理中心的倡导者,实践者和管理者。

Vermiform Ni@CNT derived from one-pot calcination of Ni-MOF precursor for improving hydrogen storage of MgH_(2)

The Ni-coated carbon nanotubes(Ni@CNT)composite was synthesized by the facile“filtration+calcination”of Ni-based metal−organic framework(MOF)precursor and the obtained composite was used as a catalyst for MgH_(2).MgH_(2)was mixed evenly with different amounts of Ni@CNT(2.5,5.0 and 7.5,wt.%)through ball milling.The MgH_(2)−5wt.%Ni@CNT can absorb 5.2 wt.%H_(2)at 423 K in 200 s and release about 3.75 wt.%H_(2)at 573 K in 1000 s.And its dehydrogenation and rehydrogenation activation energies are reduced to 87.63 and 45.28 kJ/mol(H_(2)).The in-situ generated Mg_(2)Ni/Mg_(2)NiH4 exhibits a good catalytic effect due to the provided more diffusion channels that can be used as“hydrogen pump”.And the presence of carbon nanotubes improves the properties of MgH_(2)to some extent.

Study of Diesel Engine Management System

Aim To study the diesel engine management spstem (DEMS). The DEMS can consider many engine parameters and so it can acquire the optimum system performance. Methods On the basis of analyzing the characteristics of diesel engine electronic system, the real-time, multi-tasks system design methods were used for the heavy duty vehicular diesel engine electronic control system . The hardware and software of DEMS were developed. Results and Conalusion By the test on dieSel engine bed, the system was verified and the foundation of the fully developed DEMS was laid.

Juvenile Xanthogranuloma Presenting as a Solitary Tracheal Mass in a Child: A Case Report and Literature Review

Juvenile xanthogranuloma （JXG） is an uncommon benign disease, which usually occurs on the skin of head and neck region, as a single or multiple nodular lesions. Tracheal involvement of JXG is extremely rare, and only few cases have been reported in literature. Herein we presented an additional new case and discussed the optimal management of this uncommon disease.

Wear mechanism and serious wear position of casing pipe in vertical backfill drill-hole

Vertical backfill drill-hole is usually a key project in an underground mine with backfill method and can be easily damaged by impact of backfill slurry.Observation of the damaged vertical backfill drill-holes in Jinchuan Nonferrous Metal Corporation（JNMC）,Gansu Province,China,given by a digital drill-hole video camera,indicated that there usually exist serious wear zones in casing pipe in vertical backfill drill-hole（CVBH）.It was suggested that serious wear position of CVBH should be located at an interface between air and solid-liquid mixture within CVBH.Backfill slurry falls freely and impacts the wall of CVBH near the interface with great momentum and energy coming from high speed free fall of backfill slurry.The depth of serious wear position of CVBH,i.e.,free fall height of backfill slurry in CVBH,can be estimated by the height of vertical backfill drill-hole,the length of horizontal pipeline,the density of slurry and the hydraulic gradient of pipeline system.A case study indicated that the estimation equation of serious damage depth of CVBH was of enough accuracy and was helpful for daily maintenance and management of vertical backfill drill-hole.

细纱集落改造形式选择与实践

为实现老旧设备的升级改造,达到减少用工、降低劳动强度、节约成本的目的,通过对细纱短车集落改造形式进行比较,对改造后的使用情况进行对比分析,并结合生产实际提出了具体的优化建议。研究认为,短车集落改造后系统运行稳定,实施后有效降低用工成本、减轻工人劳动强度;建议与电子升降系统进行同步改造,确保机台生产效率。

Management Strategies and Their Evaluation for Carbon Sequestration in Cropland

In order to deal with the global change and to reduce emission of greenhouse gas, a number of countries have strengthened studies on carbon sequestration in cropland. Carbon sequestration in cropland is not only an important component for the global carbon stock, but also is the most active part to sequestrate the carbon in soil from atmosphere. In this sense, it is of necessity and significance to strengthen the study on management of carbon sequestration in cropland. Based on the main factors affecting carbon cycle in agro-ecosystems, this paper summarizes the relevant management measures to strengthen the capacity of reducing emission of carbon and increasing the carbon sequestration in cropland, and evaluates the effects of these measures after being implemented at a regional extent.

Supply chain coordination mechanisms under asymmetric information with retailer cost disruptions

A two-level supply chain model involving one supplier and one retailer with linear demand is developed, and supply chain coordination mechanisms under asymmetric information （the retailer＇ s cost structure is asymmetric information） are proposed by employing game theory in two scenarios： coordination mechanisms under asymmetric information in a regular scenario （without disruption）; and coordination mechanisms under asymmetric information in an irregular scenario （ with retailer cost disruptions）. It is optimal for the supply chain to maintain the original production plan and to guarantee a steadily running system if variations of retailer costs are sufficiently low and do not exceed an upper bound. This shows that the original production plan has certain robustness under disruptions. Decisions must be re-made if a retailer＇ s cost change is greater and exceeds an upper bound. Impacts of retailer cost disruptions on the order quantity, the retail price, the wholesale price and each party＇ s as well as the system＇ s expected profits are investigated through numerical analyses.

Study on Driving Technology Innovation Using Patent Management Mechanism

In order to improve the cigarette enterprise technology innovation and patent management status, the macro work should start from the four aspects of patent ideology introduction, patent organization design, perfecting patent system and implementation of specific measures, and attention should be attached to strengthen the cooperation of the cigarette enterprise management departments. On the other hand, Jn the microscopic work level, it should build the culture atmosphere of the entire tobacco industry respect intellectual property rights, actively cultivate the na- tional patent agents and patent engineers, and gradually promote the patent work to develop in the direction of specialization, self-independence, so as to construct a scientific mechanism for patent management, and enhance the core competitiveness of the tobacco industry.

Effects of Different Land Use Types on Soil Organic Carbon and Carbon Management Index in Karst Area

[Objective] The aim was to reveal changes of soil organic matter fraction and their corresponding carbon management indexes as affected by different land use types.[Method]Soil organic carbon,active soil organic carbon and soil carbon management index（CMI）of different land use types in Guilin Maocun karst area were studied.Sampling with field investigation and laboratory testing was carried out.Heavy potassium chromate method was adopted to determine soil organic matter.333 mmol/L KMnO4 oxidation method was used to determine active organic carbon.[Result]With active soil organic matter increasing,the differences of CMI between different land use types were bigger.The CMI value of different land uses was shrubforest paddy fielddry farmland.The statistical analysis showed that labile organic matter was related with major soil properties at a significant level.[Conclusion]Labile organic matter could be used to reveal the influence of different land use types on soil organic matter and carbon management index in karst area.

Multistage Stochastic Programming Model for the Portfolio Problem of a Property-Liability Insurance Company

The current portfolio model for property-liability insurance company is only single period that can not meet the practical demands of portfolio management, and the purpose of this paper is to develop a multiperiod model for its portfolio problem. The model is a multistage stochastic programming which considers transaction costs, cash flow between time periods, and the matching of asset and liability; it does not depend on the assumption for normality of return distribution. Additionally, an investment constraint is added. The numerical example manifests that the multiperiod model can more effectively assist the property-liability insurer to determine the optimal composition of insurance and investment portfolio and outperforms the single period one.

An Analysis of the Structure of Carbide-tool Utilization Expert System

The necessity and feasibility of an expert system for carbide-tool utilization are analyzed and a practical system named CUES(carbide-tool utilization expert system ) is developed and realized. The system concept, module structure, data management, inference strategy and the interface design of the system are discussed in.detail. The system would be useful not only for the preparation of tool bank of FMS or CIMS, but the for the proper application of cemented carbide tools in conventional machining Processes.

Application of Inventory Theory in Service Stations

A service station plays an important role in the petroleum product distribution terminal. With the increase in petroleum consumption in China, the inventory theory should be applied in the stock control of service stations. In this paper the inventory theory including its background and characteristics is introduced. At the same time, the application of the theory in some trades today, especially in petroleum trade, is analyzed. Then (s, S) stochastic model is advanced, which is established according to the principle of operational research and, based on this model, a sample is given, which discusses the details of application in the stock control of service stations. The sample is simplified but implies the validity of the model in optimizing the storage of petroleum products in the market.

Soil Carbon Pool Management Index under Different Straw Retention Regimes

[Objective] To clarify the effects of different straw retention regimes on soil fertility in double cropping paddy field. [Method] The effects of different straw reten- tion regimes on total organic carbon （CToc）, active carbon （CA） and mineralized carbon （CM） were analyzed, and carbon pool active （A）, carbon pool active index （A/）, carbon pool index （CPI） and carbon pool management index （CPMi） for each treat- ment were calculated. [Result] Compared with the unfertilized treatment （CK）, CToc, CA, CM and the available ratio of soil carbon were increased in the treatment of re- turning early season and late season rice straws to field. With the same nutrient application, CToc, CA and the available ratio of soil carbon in the field with straw re- turned to field were higher than that of straw incineration and no straw returning, and the change in soil CA content was more significant. The difference in CPMI be- tween different treatments reached significant or very significant level, and the value was in the order of straw directly returned to field 〉 straw returned to field after in- cineration 〉 no straw returned to field. [Conclusion] This study provided theoretical bases for the increase of soil CA content and soil fertility in double rice fields.

老机改造是金矿,也是跳板!

在新华字典里,'凯'字解释是军队得胜回来奏的乐曲,'瑞'是古代作为凭信的玉器,得胜凯旋而归,经营诚信为本,都代表着美好的兆头.出于这样的愿景,金小星将公司命名为'如皋市凯瑞纺织机械有限公司'。除了凯瑞公司,江阴凯业纺织机械制造有限公司、凯嘉智纺科技(深圳)有限公司也都是代表如此的寓意。据金小星介绍,这三家公司为兄弟联合公司.