Design and Implementation of Student Evaluation System in Secondary Vocational School

教育评价在教学活动中是非常重要的，不过教育评价一直以来都是中等职业学校教学活动中薄弱的一环。产生这个问题的一个重要原因是，传统的信息收集方法收集到的信息数量有限。中等职业学校教职员工数量比较少，要收集的信息数量又非常多，如何高效率的收集学生信息就成为了一个重要的问题。 本文在分析了中等职业学校的教育目标、教学特点和学生特点的情况下，结合先进的教育评价理论制定出了符合实际的学生评价指标。在信息的收集方面采用了先进的计算机技术，大大提高了信息收集的效率。 中等职业学校学生评价系统采用先进的B/S结构，将信息收集工作化整为零，大大减少了信息收集工作的难度。由于采用了分散收集信息，集中管理信息的策...Educational evaluation is very important in teaching activities, but it is one of weak links in secondary vocational school. An important reason for this is that data collected through traditional method are quantitatively limited. A large amount of data must be collected by a small number of employees in secondary vocational schools, which makes the efficiency in data collection an important prob...学位：工学硕士院系专业：信息科学与技术学院计算机科学系_计算机技术学号：X200633000

The Construction of Student Information System on Secondary Vocational School

描述了建设学生信息系统对实现教育目标的重大意义。说明了基于b/S结构的学生信息系统的优点。给出了建设和使用学生信息系统的注意事项。This paper describes the great importance of student information system construction to achieve the education goal,and shows the advantages of student information system based on B/S structure.At last,the author puts emphasis on the points to which the attention should be given

Thermodynamics and kinetics of D-glyceric acid adsorption on ion exchange resin

D-甘油酸是一种重要的甘油衍生物,具有解酒护肝的功能。关于D-甘油酸生产方法的研究已有不少,但对其分离方法及分离机理的研究却鲜见报道。通过静态吸附实验,研究了D-甘油酸在201×7阴离子交换树脂上的等温热力学和动力学特性。结果表明,D-甘油酸在201×7阴离子交换树脂上的最大平衡吸附容量随p H的增加而降低,其吸附等温线符合Freundlich模型。在293~308 K下,吸附焓变为14.77 k J·mol-1,表明该吸附过程为吸热过程。升高温度有利于提高吸附速率,但对最大平衡吸附容量影响不大。同时,采用动边界模型描述D-甘油酸在该树脂上的交换行为,分别考察了料液浓度、树脂粒径和温度对交换过程的影响。交换过程的吸附速率随D-甘油酸浓度和温度的增加而增大,但随树脂粒径的增大而减小。研究表明该离子交换过程的速率控制步骤为颗粒扩散过程,交换过程的反应速率常数k0为1.22×10-3,反应级数a为0.631,表观活化能Ea为14.90 k J·mol-1,并得到了动力学总方程。D-glyceric acid, one of the promising glycerol derivatives, has various biological functions such as accelerating ethanol and acetaldehyde oxidation. Plenty studies on the synthesis but few studies on downstream processes to recover D-glyceric acid were available. A static equilibrium adsorption was performed to study isothermal thermodynamics and kinetics of D-glyceric acid adsorption onto 201×7 strong basic anion exchange resin. The results showed that the adsorption process followed the Freundlich isothermal model at different p H and temperature conditions, which the maximum adsorption capacity decreased with increasing initial p H. The change of adsorption enthalpy was 14.77 k J·mol-1 at 293—308 K, suggesting an endo-thermic adsorption process. Raising temperature improved adsorption rate with limited influence on equilibrium adsorption capacity. The Dynamic Boundary Model was used to investigate adsorption kinetics with a focus on effects of D-glyceric acid concentration, resin particle diameter and adsorption temperature. The results suggested the particle diffusion was rate-limiting step of the adsorption process. The adsorption rate increased with the increase of D-glyceric acid concentration and temperature, but decreased with the increase of resin particle diameter. The general kinetics equation was obtained with the rate constant of exchange(k0), reaction order(a) and the apparent activation energy of reaction(Ea) as following k0=1.22×10-3, a=0.631, Ea=14.90 k J·mol-1.福建省高校产学合作项目(2015N5006);; 福建省教育厅中青年教师教育科研项目(JA15393);; 泉州师范学院青年博士预研基金项目(2015QBKJ04)~

食品重量の目測における学習効果

The ability to estimate the weight of ingredients by the eye is required of students in the nutrition course. We made 50 freshmen estimate the weight of an egg and a potato once a week. Every time they had to write down their own estimates, and after that they were told the actual weights. We performed a multivariate-analysis of the date. Our results show that students ability to estimate the weight of ingredients improves with practice

Chemical Recycling of Polyethylene be Catalytic Degradation into Chemical Feedstocks

In order to develop a new recycling technology for waste plastics, catalytic degradation of low-density polyethylene has been investigated using a batch reactor system, in which the polymer thermally degraded first and the resulting decomposed fragments underwent further cracking on H-borosilicate catalyst. The presence of the boron catalyst was highly effective for converting the polymer into such lower alkenes as propene, butenes, and pentenes. Propene was more produced with decreasing thermal degradation temperature and increasing catalytic degradation temperature. However, the yield of the alkenes produced in the batch system was lower than that obtained in a fixed-bed flow reactor system. An excessive occurrence of the thermal degradation of polyethylene in the former might lead to a lowering of the alkenes yield, suggesting that the primary thermal reaction should be properly controlled to produce lower alkenes selectively in the subsequent catalytic process.特集 : 「環境調和型社会を指向して

A DC Location Model for global SCM in IPC industry

摘要 當企業規劃全球配送中心的地點選擇時，常常僅考慮地區性內的因素，如當地勞工成本、交通環境、建置配送中心成本等等，並沒有探討其對於整體供應鏈的影響，這樣可能會造成了供應鏈個體最適化而非總體最適化。基於問題對於不同產業的重要性存在著差異，學者們曾利用模型最適化的方法來解決問題。本研究針對於工業電腦產業特性，企圖建構一個符合工業電腦產業特性的全球配送中心規劃模型。 對於工業電腦產品需求特性來說，需求變異大的特色使得安全庫存為重要考慮之因素，針對工業電腦產業的產品特性，配合其變動需求大，產品價值高的特色，建構的混合整數規劃模型，並考慮其運送頻率、運送方式、運送時間及多項成本，如運送成本、持有成本、存貨成本、建置成本、課稅成本等。 本研究利用i-Log軟體對於模型求解，並可以得到最適化配送中心的數量及位置，以及各個產品群的運送方式及路徑。同時也針對海空運價差、客戶服務水準等重要因素進行敏感度分析。企業透過本研究之模型，得到最適的配送中心位置、運送方式及運送路徑，使得整體物流總成本降低，發揮供應鏈的最佳效益。從結果也可以了解到持有成本與空運成本的權衡關係。使得當企業對於低價值、需求變異小、重量較重的產品可能進行海運配送。而其他高價值，需求變異大、重量較輕的產品可能考慮進行空運運送。Abstracthen choosing a location of distribution center, most practice only consider about the local factors, such as labor cost, traffic environment, development cost and so on, but seldom discuss the impact on global supply chain regarding. However, it’s not a globally optimal situation. Therefore, scholars formulate the problem as an mathematic models to find the global optimal location based on the practice of different industries. This research aims at the practice of industrial computer industry, to construct a mix-integer linear programming(MILP) model for locating DCs globally. Regarding the characteristic of product demand in industrial computer industry, the variation is relative high, such that safety stock plays an important role when the structure of supply chain network is planned. After reviewing scholar''s past research, in views of the industrial computer industry’s product characteristics, include larger demand variation, and higher product value and so on, an mix integer programming model (MILP model) was constructed. Which shipment frequency, shipping modes, shipping time and relative costs, including transportation cost, carrying cost, inventory cost, development cost, duty cost, are considered. This research uses the i-Log software to solve the MILP model, the approximate optimal solution from the model, which is obtained the best distribution center location, the optimal shipping quantity of the routes, as well as the appropriate shipping mode for each product are identified. Also, the important factors, such as the difference of fare between air and water and the customer’s service level, are analyzed using sensitivity analysis. By utilizing the optima shipping the model of this research, the firm can reduce total logistic cost, and obtains the best distribution center location, shipping mode, and shipping routes. The enterprise can also learn a lesson from the tradeoff between carrying cost and transportation cost.目錄 I目錄 III目錄 IV一章 緒論 1.1 研究背景與動機 11.2 研究目的 31.3 研究架構 41.4 論文架構 5二章 文獻探討 6 2.1 全球供應鏈管理 6 2.2 庫存管理 8 2.3 策略性的供應鏈規劃模型 9三章 模型建立與求解 12 3.1 模型情境說明 12 3.2 模型建立 15四章 情境分析 22 4.1 A公司現況與資料敘述 22 4.2 情境分析 32 4.3 敏感度分析 37 4.4 運送方式比較 42 4.5 管理意涵 43五章 結論與未來研究方向 44 5.1 研究結論 44 5.2 研究貢獻 45 5.3 研究限制 46 5.4 未來研究方向 47考文獻 4