Assessment for Production and Operation Ability of Medium and Small-sized Enterprises Based on Neural Network

In order to improve production and operation ability of medium and small-sized enterprises, an assessment-index system of production and operation ability was proposed, and a corresponding assessment model was established based on BP neural network. The conjunction weights of the neural network were continuously modified from output layer to input layer in the process of neural network training to reduce the errors between the anticipated and actual outputs. The results from an example show that this method is reliable and feasible. The production and operation abilitv of an enterorise with assessed result of 0.833 is fairly oowerful, and that with assessed result of 0.644 is average.

Analysis and Design of Trial Well Mooring in Deepwater of the South China Sea

Mooring systems play an important role for semi-submersible rigs that drill in deepwater.A detailed analysis was carried out on the mooring of a semi-submersible rig that conducted a trial well drilling at a deepwater location in the South China Sea in 2009.The rig was 30 years old and had a shallow platform with a designed maximum operating water depth of 457 m.Following the mooring analysis,a mooring design was given that requires upgrading of the rig’s original mooring system.The upgrade included several innovations,such as installing eight larger anchors,i.e.replacing the original anchors and inserting an additional 600 m of steel wires with the existing chains.All this was done to enhance the mooring capability of the rig in order for the rig to be held in position to conduct drilling at a water depth of 476 m.The overall duration of the drilling was 50 days and the upgraded mooring system proved to be efficient in achieving the goal of keeping the rig stationary while it was drilling the trial well in the South China Sea.This successful campaign demonstrates that an older semi-submersible rig can take on drilling in deep water after careful design and proper upgrading and modification to the original mooring system.

Analysis and Comparison of Five Kinds of Typical Device-Level Embedded Operating Systems

Today, the number of embedded system was applied in the field of automation and control has far exceeded a variety of general-purpose computer. Embedded system is gradually penetrated into all fields of human society, and ubiquitous embedded applications constitute the 'ubiquitous' computing era. Embedded operating system is the core of the em-bedded system, and it directly affects the performance of the whole system. Our Liaoning Provincial Key Laboratory of Embedded Technology has successfully developed five kinds of device-level embedded operating systems by more than ten years’ efforts, and these systems are Webit 5.0, Worix, μKernel, iDCX 128 and μc/os-II 128. This paper mainly analyses and compares the implementation mechanism and performance of these five kinds of device-level embedded operating systems in detail.

A Comparative Overview of Three Gorges Project's Sediment Handling

Water projects’ sediment deposition problems always cause widespread concerns. The gravity of them varies in accordance not only with reservoirs’ natural and socio-economic characteristics but also with their modes of operation. The unique characteristics, configuration and mode of operation of Three Gorges Project (TGP) reservoir are compared with those of several existing large reservoirs in this paper. As many reservoirs are troubling environment by gradually extending coarse sediment deposition at the uppermost end of fluctuating backwater region toward upstream, Gezhouba reservoir on Yangtze and Danjiangkou reservoir on Hanjiang have shown no trace of such upstream extension of sediment deposition in relevant prototype observation data for the past 20 and more years. TGP reservoir’s in-coming flow sediment conditions and configuration in plane are almost the same as those of Gezhouba reservoir, and TGP reservoir’s mode of operation(usually keeping a very low pool level for flood control in flood season and storing up in-coming flow only thenceafter) is similar to that of Danjiangkou reservoir. New findings of sediment research and prototype flow sediment investigations as well as new agenda of large hydro projects’ construction on Jinshajiang in nearest future assure the prospects of TGP sediment handling.

Prediction Ability of Cash Flows, Net Income （NI）, and Auditors

The accounting information should help investors and creditors evaluate the amounts, timing, and uncertainty of firms＇ future cash receipts and disbursements. The Financial Accounting Standards Board （FASB） contends that accrual-based historical earnings are superior to cash flows in predicting future cash flows. But, Bowen, Burgstahler, and Daley （1986） showed that traditional measures of cash flows （net income （NI） plus depreciation and working capital from operations） appear to be better predictors of future cash flows than accrual accounting earnings. Since then, many researchers have articulated the importance of accounting data, especially cash flows and NI, in the predictive and forecasting processes. In this study, we empirically re-examined the ability of cash flows from operating activities （CFO） and accrual-based NI in predicting firms＇ bankruptcy. In the past, the results of this type of research were mixed. Differently from previous research, we focus on the timing of predictive ability, i.e., which indicator, cash flows or NI, is faster in predicting a firm＇s bankruptcy. We also investigate the timing of auditors＇ issuance of a going-concern opinion. The preliminary results show that the accrual-based NI is more accurate and faster than either CFO or audit opinion in predicting firms＇ failures. On average, NI signals a firm＇s bankruptcy 2.41 years before the bankruptcy filing, while CFO signals 1.48 years before filing. Auditors issued a going-concern opinion, another signal for firms＇ failure, to only 16 out of 41 bankrupt firms one year before bankruptcy, and no auditor issued the going-concern opinion two years before bankruptcy.

The RHSA Strategy for the Allocation of Outbound Containers Based on the Hybrid Genetic Algorithm

Secure storage yard is one of the optimal core goals of container transportation;thus,making the necessary storage arrangements has become the most crucial part of the container terminal management systems（CTMS）.This paper investigates a random hybrid stacking algorithm（RHSA） for outbound containers that randomly enter the yard.In the first stage of RHSA,the distribution among blocks was analyzed with respect to the utilization ratio.In the second stage,the optimization of bay configuration was carried out by using the hybrid genetic algorithm.Moreover,an experiment was performed to test the RHSA.The results show that the explored algorithm is useful to increase the efficiency.

Farmers’ Knowledge, Attitude and Practices on Pesticide Safety: A Case Study of Vegetable Farmers in Mount-Bamboutos Agricultural Area, Cameroon

Pesticides are commonly used in Cameroon for farming purposes, especially in the Mount-Bamboutos agricultural area. This study aimed to evaluate the basic knowledge, attitude and practices among pesticide users in the said area in view of assessing the level of safety and health risks due to pesticide exposures or contaminations. Data was collected through survey study on pesticide knowledge, marketing, attitude and practices on spraying skills, toxicity, health issues, management, first aids and literacy of operators. Results revealed that both male and female were involved in agricultural practices with their ages varying from 21 to 60 years. The farmers were generally of low education level. The main crops cultivated are leafy and fruit vegetables, tubers, cereals, roots and fruits. Half the participants purchased pesticides from the neighborhood. Ethylene bis-dithiocarbamate (EBDC) and cypermethrin were the two main pesticides used by the farmers. Seventy percent (70%) of pesticide containers were thrown in the environment after usage. A certain portion of the sprayers (12%) did not know the existence of residues after application while, as routes of penetration up to 42% pointed the mouth as the route for pesticides into human body. Very few respondents (3%) identified the intervention hospital in case of pesticide poisoning. This study highlights poor knowledge on the use and handling of pesticides in Mount-Bamboutos agricultural area. Sensitization campaigns should be put in place, involving different stakeholders, to train farmers in pesticide risks and management.

英语演讲语篇中的常用修辞运用研究——以《高级英语》中Speech on Hitler’s Invasion of the U.S.S.R.为例

在西方英语国家中,演讲一贯受到重视,因为演讲会产生说服人的效果。英语演讲承袭了西方文明的传统,将一些修辞手段恰当地运用于演讲语篇中,这也体现出演讲与修辞的渊源。本文以张汉熙主编的《高级英语》中Speech on Hitler’s Invasion of the U.S.S.R.为例,对英语演讲中的修辞运用进行探析,以增强英语演讲者对英语演讲语篇中修辞运用的感悟及操作能力。

Research of Personnel Operational Ability Evaluation of Large-scale Complex Equipment

The level of personnel operation ability determines the expected effectiveness of large-scale complex equipment. Firstly, this paper constructs the personnel operational ability evaluation index system and analyzes the data source of index. Secondly, the weight of index is determined and the fuzzy comprehensive evaluation model is proposed. Finally, results of instance analysis show that the evaluation model is feasible and effective.

以培养临床操作能力为核心的教学模式在中医骨伤科学的应用

目的评价以培养临床操作能力为核心的教学模式在中医骨伤科学课堂的效果。方法将辽宁中医药大学2017级中医专业的两个班级分为实验组和对照组。实验组(30例)采用以培养临床操作能力为核心的教学模式,对于查体、正骨手法、夹板固定等操作类知识点,教师予以示范操作,学生进行角色扮演,分组进行操作演示,由学生评委评分、教师点评;而对照组(31例)则采用传统教学法。观察比较两组中医骨伤科学期末考试成绩的分段与平均分数情况,并对实验组进行问卷调查。结果实验组期末成绩的分段和平均分数情况均显著优于对照组(P<0.05)。对实验组的问卷调查结果表明以培养临床操作能力为核心的教学模式有助于提高学生的临床操作能力,具有一定的创新性。结论以培养临床操作能力为核心的教学模式优于传统教学,值得在中医骨伤科学教学中推广应用。

Exploration of Children's Language Acquisition and Teaching Based on Piaget's Theory of Cognitive Development

This paper explores children's language acquisition process and its application in educational practice based on Piaget's theory of cognitive development.Piaget's theory emphasizes that children's cognitive abilities develop progressively through different stages,from sensorimotor to concrete operational stages.Children's language acquisition progresses from simple to complex and from concrete to abstract during these stages.The paper integrates theoretical discussions on how to design effective language teaching strategies according to children's cognitive development characteristics to promote their language proficiency and overall cognitive development.

Process intensification of fine coal separation using two-stage flotation column

Flotation column is widely used as the separation equipment for fine mineral due to its high selectivity. However, this device may be unsuitable for the coarse particle flotation and has high handling ability. A two-stage flotation column with dimensions of 2 000 mm×1 000 mm×4 000 mm was designed to enhance the column flotation process. The energy input was modified by adjusting the flow rate and the head of circulating pump. The flotation column was designed with low energy input in the first stage(speed flotation stage) to recover easy-to-float materials quickly, and high energy input in the second stage(recovery stage) to recover difficult-to-float minerals compulsorily. Contrast experiments on the throughput and coarse coal recovery of high ash coal from the Kailuan Mine were conducted using conventional single-stage flotation column and the two-stage flotation column. The results show that the combustible matter recovery of the two-stage flotation column is 5.25% higher than that of the conventional single-stage flotation column. However, the ash contents of clean coal for both columns are similar. Less coarse coals with low ash are obtained using the two-stage flotation column than that using the single-stage column flotation with the same handling ability. The two-stage flotation column process can enhance coal flotation compared with the conventional single-stage column flotation.

Handle系统与域名系统互联互通机制:一种基于标记语言描述协议数据单元的实现

Handle系统和域名系统两种标志解析系统的解析协议和编码规则并不兼容,导致两者之间的数据空间无法共享,信息无法流通,降低了用户体验。为此,通过分析已有解决方案的利弊,发现协议数据单元与协议本身的分离可解决两个系统的解析协议和编码规则不兼容问题。利用这一分离机制,设计并实现了一种基于代理服务器的Handle系统与域名系统互联互通机制。实验结果表明,相对于传统客户端—服务器模式而言,该机制在不同应用场景下解析响应时间增量占比小,均在可接受范围内。

A NEWLY DEVELOPED LIQUID-LIQUID EXTRACTION COLUMN——The Open Turbine Rotating Disc Contactor(OTRDC)

The experimental study on hydrodynamics,axial mixing and mass transfer has been carried out in anewly developed liquid-liquid contactor,the open turbine rotating disc contactor(OTRDC).It has been foundthat the OTRDC is possible to be operated with higher hold-up of dispersed phase,larger interface and hencehigher efficiency of mass transfer comparing with the ordinary RDC.In correlating axial mixing data,a combinedmodel has been used in which both forward mixing due to the drop size distribution and backmixingof droplets are taken into account.The RTD curves of dispersed phase predicted by the model were fit wellwith the experimental data.The comparison of the experimental mass transfer data with thosc predicted by theaxial mixing model and theoretical single drop models shown they are in good agreement.

Discussion on Effective Strategies for Improving Enterprise Operation and Management Abilities

In the current socialist market economy,if an enterprise wants to grow and develop,it must do all kinds of management for its enterprise,and the most important thing for strengthening management of enterprises is to strengthen their own operation and management abilities.Whether it is financial management,management of personnel efficiency,or management of talents,it is necessary to protect from the infrastructure,so as to fundamentally improve the economic benefits of the enterprise,and vice versa if社is not properly managed,it will affect the development of the enterprise.Therefore,improving the operation and management abilities of enterprises at present is an important factor to promote the economic development of enterprises.This paper analyzes the management problems of enterprises and the definition of enterprise operation and management abilities,and analyzes how enterprises can reform and innovate,thus strengthening the operation and management abilities and economic benefits of enterprises.

Some GUI Works of HIRFL

The GUI of the control system of HIRFL adopts Control System Studio(CSS).CSS is a collection of tools:CSS BOY,Alarm handler,archive engine,as well as several operators interface and control system diagnostic tools.Most of the tools deal with Process Variable(PV)in different ways.For example,CSS BOY displays the value of a PV;alarm concentrates on the alarm state of a PV.Each individual tool deserves some attention,and the Experimental Physics and Industrial Control System(EPICS)toolkit,indeed offers each functionality as a separate tool.A key point of CSS is the integration of such functionalities.All the work are completed under the platform of CSS.

城市轨道交通企业财务表现能力研究

[目的]为了系统性地把握企业财务状况,提升城市轨道交通企业的经营决策能力,需研究城市轨道交通企业的财务表现能力。[方法]从营业总成本、盈利能力、偿债能力、营运能力和成长能力五个方面,统计分析了我国10座城市的轨道交通企业的营业总成本及人工成本、偿债能力比率、盈利能力比率、营运能力比率和成长能力比率,并基于此研究了企业的财务表现能力。[结果及结论]天津地铁存量PPP(公私合营)项目盘活资金超150亿元,减轻了政府债务负担。其他城市的轨道交通企业的营业总成本和人工成本整体呈上升趋势,建议通过PPP模式来减轻政府财务压力,提高成本效率。北京、成都、武汉、青岛、南京的轨道交通企业的长期偿债能力较弱。针对2021年成都、武汉、南京的轨道交通企业的负债程度偏高问题,建议采取光伏发电、地源热泵、共享车辆基地、设备国产化等措施减少企业成本。对于企业盈利偏低问题,建议通过提供运营服务咨询、运营管理服务等方式增加收入。

环境污染与食品安全综合性实验探索与实践——以“重金属在土壤基质-食用菌体-人体中的迁移及利用”为例

以“重金属在土壤基质—食用菌体—人体中的迁移及利用”科研素材为例,采集云南省不同地区食用菌及其根际土壤为代表性样本,基于环境污染与食品安全相关理论知识,探究菌体、根际土壤及人体系统中镉的迁移规律,建立具有设计性和研究性的综合实验。采用“预习准备—实验过程—分析总结—拓展思考”的教学方式,开展“基础—进阶—高阶”渐进式教学过程,层层递进难度系数,形成一种具有专业特色的综合实验教学模式,增强学生对环境和食品学科交叉融合知识的理解,提高学生的实践操作能力和创新能力,培养具有社会责任感的高素质人才。

案例教学法结合PBL模式在心内科教学中的应用与探索

目的探讨案例教学法结合问题为基础学习(Problem-Based Learning,PBL)模式在心内科教学中实践效果。方法选取2022年1月—2023年1月新疆医科大学第四附属医院70名心内科学生为研究对象,采取随机数表法分为两组,每组35名,对照组给予常规讲授法教学,研究组采用案例教学法联合PBL模式,定时记录学习效果。结果研究组理论考试、实践操作、病例分析能力、自主学习能力评分均高于对照组,差异有统计学意义(P均<0.05)。结论案例教学法结合PBL模式在心内科教学中具有较好的应用效果,能有效提高学生的学习能力与实践操作能力。

信息化技术结合多模式教学在手术室成长期护士中的应用

目的探讨信息化技术结合多模式教学在手术室成长期护士中的应用价值。方法选择2020年1月—2022年12月聊城市人民医院手术室成长期护士74名。按随机数字表法分为对照组、观察组,各37名。对照组采用常规教学,观察组采用信息化技术结合多模式教学,2组均教学8周。对比分析2组考核成绩、批判性思维能力、护士对教学工作的满意度。结果教学后,观察组理论知识、实践操作技能成绩及加州批判性思维特质量表(California critical thinking disposition inventory,CCTDI)中系统化能力、批判思维的自信心、开放思想等各维度评分及总分高于对照组,差异有统计学意义(P<0.05);观察组手术室成长期护士对教学工作的满意度高于对照组,差异有统计学意义(P<0.05)。结论信息化技术结合多模式教学能够促使手术室成长期护士掌握手术室护理相关理论知识,提高其实践操作能力,增强批判性思维能力,且护士对教学工作的满意度较高,在手术室护理教学中具有实用性。