期刊论文读书笔记范例(小源笔记（八）：论文精读系列二)

Posted 2023-05-29

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期刊论文读书笔记范例(小源笔记（八）：论文精读系列二)

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今日内容要点：

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本期小编结合论文中模型建立和假设等方法内容，继续为大家分享期刊论文《Remanufacturing authorization strategy for competition among OEM, authorized remanufacturer, and unauthorized remanufacturer》的第三节内容：模型假设和符号，请读者跟着小编一起来学习吧！

In this issue, the editor will continue to share the third section of the journal paper "Remanufacturing authorization strategy for competition among OEM, authorized remanufacturer, and unauthorized remanufacturer": model assumptions and symbols, please readers Learn with me!

正文：

Body part：

图 1 Figure 1

图 2 Figure 2

图 3 Figure 3

第三节中主要是介绍关于模型的假设与符号内容，图1和图2显示为英文原文内容，由于翻译问题，图3中做出了一些公式符号的修正笔记。第一段对本文研究对象以及研究背景进行简要说明，市场上可能同时存在三种类型的产品，包括新产品、授权和未经授权的再制造产品，设置他们的零售价格分别为Pn、Par、Pur。

The third section mainly introduces the assumptions and symbolic content of the model. Figures 1 and 2 show the original content in English. Due to translation problems, some correction notes for formula symbols are made in Figure 3. The first paragraph briefly explains the research object and research background of this paper. There may be three types of products in the market at the same time, including new products, authorized and unauthorized remanufactured products, and their retail prices are set as Pn, Par, Pur.

第二段强调顾客根据产品的质量和价格进行购买，并愿意购买效用最高的产品。首先假设客户对产品的估值是θ，在区间[0,1]上均匀分布；其次采用S下标n、ar、ur分别表示新产品、授权再造品和未经授权再造品的质量水平，并且文章假设AR再制造可以将废旧产品恢复到新产品的质量水平，而未经授权的再制造商实施再制造活动只能将废旧产品恢复到新产品的部分质量水平，记为λ，0 < λ≤1，未授权再造品与新产品在λ = 1时质量无差异；最后根据行业惯例，作者认为授权的再制造产品与新产品具有相同的质量水平，在不失一般性的前提下，将新授权再造品的质量等级归一化(即Sn = Sar = 1)，因此，未经授权再造品的质量等级为Sur = λSn = λ，其中λ是UR的一个决策变量。

The second paragraph emphasizes that customers buy based on the quality and price of the product and are willing to buy the product with the highest utility. First, it is assumed that the customer's valuation of the product is θ, which is uniformly distributed in the interval [0,1]; secondly, the S subscripts n, ar, and ur are used to denote the quality levels of new products, authorized remanufactured products and unauthorized remanufactured products, respectively. And the article assumes that AR remanufacturing can restore used products to the quality level of new products, while the implementation of remanufacturing activities by unauthorized remanufacturers can only restore used products to part of the quality level of new products, denoted as λ, 0 < λ≤1, there is no difference in quality between unauthorized remanufactured products and new products when λ = 1; finally, according to industry practice, the author believes that authorized remanufactured products have the same quality level as new products, without loss of generality, The quality level of newly authorized remanufactures is normalized (i.e., Sn = Sar = 1), so that the quality level of unauthorized remanufactures is Sur = λSn = λ, where λ is a decision variable of UR.

第三段中认为无论再造品是由AR还是UR生产，客户对于再制造产品的支付意愿只是新产品支付意愿的δ的零头，δ是一个参数，可以捕捉客户对再制造产品的感知质量。接着给出了客户对于新产品的净效用（见图4），对于授权再制造产品的净效用（见图5），以及对于未经授权的再制造产品的净效用（见图6）。第四段和第五段分别阐述了两种情况，一种是客户只会在授权前选择新产品和未经授权的再制造产品，因为目前不存在授权的再制造产品，给出其需求函数和逆需求函数如图7和图8所示。另一种是OEM授权再制造商再制造后，客户可以在新产品、授权再制造产品和未经授权的再制造产品中进行选择，给出了这种情况下的需求函数和逆需求函数如图9和图10所示。

The third paragraph argues that regardless of whether the remanufactured product is produced by AR or UR, the customer's willingness to pay for the remanufactured product is only a fraction of the willingness to pay for the new product, and delta is a parameter that can capture the customer's perceived quality of the remanufactured product. It then presents the customer's net utility for the new product (see Figure 4), the net utility for the authorized remanufactured product (see Figure 5), and the net utility for the unauthorized remanufactured product (see Figure 6). The fourth and fifth paragraphs respectively illustrate two cases, one is that the customer will only choose new products and unauthorized remanufactured products before authorization, because there are currently no authorized remanufactured products, give its demand function The and inverse demand functions are shown in Figures 7 and 8. The other is that after the OEM authorizes the remanufacturer to remanufacture, the customer can choose among new products, authorized remanufactured products and unauthorized remanufactured products. The demand function and inverse demand function in this case are given as 9 and 10.

图 4 Figure 4

图 5 Figure 5

图 6 Figure 6

图 7 Figure 7

图 8 Figure 8

图 9 Figure 9

图 10 Figure 10

第六段假设可用于再制造的核心总是丰富的，意味着再制造的产品总数不应该大于可用于再制造的核心数，并详细说明了假设合理的几点原因。

The sixth paragraph assumes that the cores available for remanufacturing are always abundant, implying that the total number of remanufactured products should not be greater than the number of cores available for remanufacturing, and details several reasons why the assumption is reasonable.

第七段依旧进行模型符号的设置，令Cn、Car和Cur分别表示新产品、授权产品和未经授权的再制造产品的单位生产成本，新产品的生产成本以及授权和未经授权的再制造产品的生产成本与产品的质量水平以二次元形式联系在一起：Cur=λ2αCn，其中再制造产品的生产成本与新产品成本成正比，比例常数定义为α。

The seventh paragraph still sets the model symbols, so that Cn, Car and Cur represent the unit production cost of new products, authorized products and unauthorized remanufactured products, the production cost of new products, and authorized and unauthorized remanufacturing, respectively. The production cost of the product is linked to the quality level of the product in a two-dimensional form:Cur=λ2αCn, where the production cost of the remanufactured product is proportional to the cost of the new product, and the proportionality constant is defined as α.

最后三段内容阐述了进一步的两个假设，一是假设未经授权的再制造先于授权的再制造；二是其次，UR企业可以决定是否进入再制造市场。并指出了本研究的重点并不是UR，而是授权以及授权会如何影响其他决策。

The last three paragraphs elaborate two further assumptions, one assumes that unauthorized remanufacturing precedes authorized remanufacturing; and second, that UR companies can decide whether to enter the remanufacturing market. And pointed out that the focus of this study is not UR, but authorization and how authorization affects other decisions.

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参考资料：谷歌翻译

参考文献：Zhou Qin and Meng Chao and Yuen Kum Fai. Remanufacturing authorization strategy for competition among OEM, authorized remanufacturer, and unauthorized remanufacturer[J]. International Journal of Production Economics, 2021, 242

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