binary- arithmetic unit for carrying out of additions or subtractions

• 1. 一种二进制算术减法电路 [P] . 中国专利： CN106569775B . 2018.07.06
• 2. 一种二进制算术减法电路 [P] . 中国专利： CN106569775A . 2017-04-19
• 3. binary- arithmetic unit for additions, subtractions of two encrypted decimal numbers [P] . 德国专利： DE1121383B . 1962-01-04

  机译： 二进制算术单元，用于两个加法十进制数的加法和减法

• 4. In the parallel arithmetic central processing unit the carry equipped addition and subtraction processing mode [P] . 日本专利： JP2851192B2 . 1999-01-27

  机译： 并行算术中央处理器中的进位加减法处理方式

• 5. ADDITION/SUBTRACTION PROCESSING SYSTEM WITH CARRY IN PARALLEL ARITHMETIC PROCESSING UNIT [P] . 日本专利： JPH05127902A . 1993-05-25

  机译： 并行算术处理单元中带有加法的加法/减法处理系统

• 1. Optical carry-free addition and borrow-free subtraction using signed-digit numbers [C] . Alam, M.S. . 1994
• 2. The effects of direct instruction in teaching addition and subtraction of decimals and decimal word problems on students at risk for mathematics failure [D] . Small, Heather Hoopes 2011
• 3. Language and Arithmetic: A Failure to Find Cross Cognitive Domain Semantic Priming Between Exception Phrases and Subtraction or Addition [O] . Golnoush Ronasi, Martin H. Fischer, Malte Zimmermann -1
• 4. : "This paper deals with the functionality of the flaked stone assemblages from several Neolithic sites of the NE of the Iberian Peninsula. The chronological framework ranges from the mid-6th to the mid-4th millennium cal. BCE, which corresponds to the Early and Middle Neolithic. This long period ranges from the arrival of the first farming communities in the Iberian Peninsula, around 5600-5500 cal. BCE, to 3600-3500 cal. BCE, two millennia later, when Neolithic communities had stably occupied most of the available territory, from the mountainous areas of the Pyrenees to the coastal areas of the Mediterranean.In this context, the NE of the Iberian Peninsula is one of the areas where a major number of use-wear analyses have been carried out, especially for what concerns the Neolithic period. This is mainly due to the interest shown by the directors of the excavations and by the Spanish use-wear specialists as well; both participated and cooperated in order to enlarge the number of contexts studied, making the NE of the Iberian Peninsula one of the areas of Europe with the largest number of ‘functional studies’. As a result, today we have a reliable picture of the type of lithic tools used by the first farming groups, how they were used, and which needs they were satisfying.The methodology employed for this type of analysis is today broadly shared by most use-wear specialists. A stereoscopic microscope is used together with a reflected-light microscope for the analysis of the archaeological specimens. Afterwards, the observed use-wear traces are compared with the traces from experimental tools. This study primarily made use of the tools preserved at the ‘Traceoteque’ of the Institución Milà y Fontanals of the CSIC of Barcelona.This paper presents the results obtained for the different types of analysed sites and the relative lithic assemblages. In this way, tools from different contexts are compared: open-air sites, caves and rock-shelters, pit-sites, burials, and mining sites. Such a diversity of contexts allowed for the exploration of the existence of recurrences and differences in the functionality of the lithic tools from one site to another. The results obtained have also provided information on some aspects related to the economic processes carried out at the different sites, caves, rock-shelters and open-air contexts. It has been possible to gain fresh data on the types of tasks carried out and their relative importance for each site, their relation with the geographical and environmental context and the natural resources available there. In addition, analysing tools recovered from burials – mainly individual inhumations – provided information on the relationships between the buried individuals and the working tools, in particular exploring the relationships between sex and age patterns and the types of tools deposited as goods.In conclusion, use-wear analysis allowed for the exploration of a variety of issues; from technical aspects related to the production and management of the lithic resources to social aspects related to the subsistence activities and the individuals that carried them out." [O] . Gibaja Bao, Juan Francisco, Mazzucco, Niccolo 2015

• 1. The Treatment of Acne with the Addition and Subtraction of Loquat Qingfei Yin:A Meta-Analysis [J] . Wenjun Xue ,Pengguang Xu . 临床护理研究 . 2021,第004期
• 2. More Exercises of Addition and Subtraction [J] . 王烨 . 疯狂英语:双语世界 . 2020,第001期
• 3. Exercises of Addition and Subtraction [J] . 区佩心1 . 疯狂英语:双语世界 . 2019,第002期
• 4. Calculate addition and subtraction in supply-front reform, and promote innovative development [J] . . 中国纺织：英文版 . 2016,第8期
• 5. Elimination by addition or subtraction after equalizing coefficients加减消元法 [J] . 李连碧 . 数学学习与研究：初一版 . 2005,第003期
• 6. 基于符号执行与实际执行的二进制代码执行路径分析 [C] . 崔宝江 ,国鹏飞 ,王建新 . 第二届信息安全漏洞分析与风险评估大会 . 2009
• 7. 小学数学核心素养导向的单元教学设计个案研究——以《100以内的加法和减法》为例 [A] . 董雪娇 . 2021