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【项目管理】4套大型项目投标文件案例
0 个回复 - 377 次查看内容完整扎实，很有参考价值 +---1、首创投标文件 | | 投标文件--海口.rar | | 西安投标文件.zip 投标文件\第五部分接受招商程序的承诺函.doc 投标文件\第十部分前瞻性战略投资诚意.doc 投标文 ...2022-12-2 16:43 - wz151400 - 现金交易版

全球亚洲各国中国道路数据集交通道路水系城市建筑广场自然环境矢量shp格式
0 个回复 - 1333 次查看全球亚洲各国中国道路数据集交通道路河流水系城市建筑广场自然环境矢量shp格式一、NASA道路数据1、数据来源：NASA2、时间跨度：1980-2010(取决于国家)3、区域范围：亚洲4、指标说明：数据格式：shp矢量数据平面坐标系 ...2022-5-22 17:06 - yusb - 现金交易版

道路数据集
0 个回复 - 785 次查看一、NASA道路数据1、数据来源：NASA2、时间跨度：1980-2010(取决于国家)3、区域范围：亚洲4、指标说明：数据格式：shp矢量数据平面坐标系：WGS-84全球公路开放获取数据集(1980-2010)第一版，Global Roads Open Acces ...2022-5-10 04:11 - hwwhss - 现金交易版

平均方差提取值（Average Variance Extracted, AVE）怎样求解
8 个回复 - 50936 次查看各位高水好：请问平均方差提取值（Average Variance Extracted, AVE）怎样求解，用什么软件计算2012-5-17 22:58 - zf251 - 计量经济学与统计软件

Discrete Wavelet Transform-Based Feature Extraction
1 个回复 - 522 次查看【作者(必填)】【文题(必填)】 Discrete Wavelet Transform-Based Feature Extraction of Experimental Voltage Signal for Li-Ion Cell Consistency 【年份(必填)】【全文链接或数据库名称(选填)】https: ...2022-9-8 10:52 - ticket1988 - 求助成功区

Optimized Automotive Fault-Diagnosis based on Knowledge Extraction from Web Reso
2 个回复 - 326 次查看【作者(必填)】【文题(必填)】 Optimized Automotive Fault-Diagnosis based on Knowledge Extraction from Web Resources 【年份(必填)】【全文链接或数据库名称(选填)】https://ieeexplore.ieee.org/abs ...2022-5-25 22:55 - ticket1988 - 求助成功区

Miff human mobility extractions with cellular signaling data
1 个回复 - 710 次查看【作者(必填)】 Song 【文题(必填)】 Miff human mobility extractions with cellular signaling data under spatio-temporal uncertainty 【年份(必填)】 2020 【全文链接或数据库名称(选填)】https://dl.acm ...2021-11-11 08:16 - peterxu1969 - 求助成功区

Rural tax reform and the extractive capacity of local state in China
2 个回复 - 487 次查看【作者(必填)】【文题(必填)】Rural tax reform and the extractive capacity of local state in China 【年份(必填)】【全文链接或数据库名称(选填)】https://www.sciencedirect.com/science/article/ab ...2021-10-23 08:44 - 日新少年 - 求助成功区

求助《Multiview PCA: A Methodology of Feature Extraction and Dimension Reduction
2 个回复 - 637 次查看【作者(必填)】Zhiming Xia, Yang Chen, Chen Xu 【文题(必填)】Multiview PCA: A Methodology of Feature Extraction and Dimension Reduction for High-Order Data及其附件材料【年份(必填)】2021 【全文链 ...2021-9-3 15:58 - xmok77 - 求助成功区

Surgical protocols for ridge preservation after tooth extraction. A systematic r
1 个回复 - 426 次查看【作者(必填)】Vignoletti, F., Matesanz, P., Rodrigo, D.,Figuero, E., Martin, C., & Sanz, M. (2012) 【文题(必填)】Surgical protocols for ridge preservation aftertooth extraction. A systematic review ...2021-2-20 13:38 - nalan22 - 文献求助专区

Effect of alveolar ridge preservation after tooth extraction: A systematic revie
1 个回复 - 312 次查看【作者(必填)】Avila-Ortiz, G., Elangovan, S., Kramer, K.W., Blanchette, D., & Dawson, D.V. (2014). 【文题(必填)】 Effect of alveolar ridgepreservation after tooth extraction: A systematic review an ...2021-2-20 13:12 - nalan22 - 求助成功区

Porous bovine bone mineral in healing of human extraction sockets. Part 1: Histo
1 个回复 - 289 次查看【作者(必填)】Artzi, Z., Tal, H., & Dayan, D. (2000) 【文题(必填)】Porous bovine bone mineral in healing of humanextraction sockets. Part 1: Histomorphometric evaluations at 9 months. Journalof Per ...2021-2-20 13:19 - nalan22 - 求助成功区

predatory value extraction - the looting of the business corporation (2020)
1 个回复 - 668 次查看 predatory value extraction - how the looting of the business corporation became the US norm (2020)2021-2-2 14:55 - loneshark - 投资人（实务版）

[专题系列] 白宫经济顾问教你分析宏观数据 Extracting the Signal from the Noise
149 个回复 - 19645 次查看想要随时跟踪最新好书，请点击头像下方“加关注”。关注成功后，查看这里即可：三步走把千本好书“一网打尽”！。 Extracting the Signal from the Noise Oct 19, 2016, by Jason Furman In the early ...2016-12-18 02:22 - wwqqer - 宏观经济学

通过str_extract提取市县信息
1 个回复 - 4018 次查看通过如下代码从执行法院中提取市和县的信息，但出现了最后一行的这种情况，“绵阳市江油市”，怎么写才能保留第一次出现的市呢？2022-3-13 19:01 - zhaohao4466 - R语言论坛

How the market makers extract millions of dollars a day
4 个回复 - 909 次查看 How the market makers extract millions of dollars a day & How to grab your share 英文版本Martin Cole2021-12-7 07:38 - vigo625 - 悬赏大厅

GAM模型提示ExtractVars里的模型公式不对
2 个回复 - 7233 次查看用glm或者不含自由度的模型都可以回归，但是一旦加入自由度，则提示错误 model0 summary(model0) model1 summary(model1) model2 model12018-3-13 22:53 - hubombo - R语言论坛

A Micro-Geography of State Extractive Power-the Case of Rural China
3 个回复 - 633 次查看【作者(必填)】Daniel Koss[/backcolor] & Hiroshi Sato[/backcolor] 【文题(必填)】A Micro-Geography of State Extractive Power: the Case of Rural China 【年份(必填)】【全文链接或数据库名称(选填 ...2021-1-15 02:27 - 日新少年 - 求助成功区

【学习笔记】# 提取称谓 data[\'N\'] = data.Name.str.extract(\'([A-Z ...
1 个回复 - 732 次查看 # 提取称谓 data[\'N\'] = data.Name.str.extract(\'([A-Za-z]+)\\.\')2020-9-2 16:45 - 34578_pxapp - Forum

Home Equity Extraction by Homeowners: 2000–2006
1 个回复 - 417 次查看【作者(必填)】 Michael LaCour-Little, Eric Rosenblatt and Vincent Yao 【文题(必填)】 Home Equity Extraction by Homeowners: 2000–2006【年份(必填)】 2010 【全文链接或数据库名称(选填)】 https://ww ...2020-1-21 19:09 - roddicktwq - 文献求助专区

求Analysis of symbolic data: exploratory methods for extracting statistical info
4 个回复 - 431 次查看【作者(必填)】【文题(必填)】Analysis of symbolicdata: exploratory methods for extracting statistical information from complexdata 【年份(必填)】【全文链接或数据库名称(选填)】https://www.taodo ...2019-12-6 09:46 - xiaoshiyue - 求助成功区

The regional extraction method: EC input-output comparisons.
2 个回复 - 396 次查看【作者(必填)】Dietzenbacher E, Van Der Linden JA. [/backcolor] 【文题(必填)】The regional extraction method: EC input-output comparisons. [/backcolor] 【年份(必填)】1993[/backcolor] 【全文链接或 ...2019-7-13 16:46 - feiye2006 - 求助成功区

Using extracted forward rate term structure information to forecast foreign exch
1 个回复 - 503 次查看【作者(必填)】 4 【文题(必填)】 Using extracted forward rate term structure information to forecast foreign exchange rates【年份(必填)】 23 【全文链接或数据库名称(选填)】https://www.sciencedirect ...2019-5-30 21:14 - internet.hzx - 求助成功区

Practical Computer Vision: Extract insightful information from images using
2 个回复 - 382 次查看【作者(必填)】 Abhinav Dadhich 【文题(必填)】 Practical Computer Vision: Extract insightful information from images using TensorFlow, Keras, and OpenCV【年份(必填)】 2018 【全文链接或数据库名称(选 ...2019-5-16 09:22 - 20115326 - 求助成功区

Extract, Transform, and Load with SQL Server Integration Services
4 个回复 - 359 次查看 Extract, Transform, and Load with SQL Server Integration Services: With Microsoft SQL Server, Oracle, and IBM DB2By 作者: Thomas Snyder – Vedish ShahISBN-10 书号: 1583478809 ISBN-13 书号: 9781583478 ...2018-12-15 11:59 - 13950050756 - 经管书评

A primer on theory-driven web scraping: Automatic extraction of big data from th
1 个回复 - 481 次查看【作者(必填)】 Richard N. LandersOld Dominion UniversityRobert C. BrussoICF and Old Dominion UniversityKatelyn J. CavanaughOld Dominion UniversityAndrew B. CollmusOld Dominion University 【文题(必填 ...2019-3-12 13:23 - 323191599 - 求助成功区

Feature Extraction: Foundations and Applications
2 个回复 - 1280 次查看 2016-2-20 10:05 - Nicolle - winbugs及其他软件专版

find it fast - extracting expert information from social networks, big data
5 个回复 - 876 次查看 find it fast - extracting expert information from social networks, big data, tweets, and more (.pdf)2017-6-7 09:44 - loneshark - 投资人（实务版）

Machine Learning and Knowledge Extraction
1 个回复 - 1880 次查看 Machine Learning and Knowledge Extraction: First IFIP TC 5, WG 8.4, 8.9, 12.9 International Cross-Domain Conference, CD-MAKE 2017, Reggio, Italy, … (Lecture Notes in Computer Science)ISBN-10 书号: 33 ...2018-12-15 19:19 - 13950050756 - Forum

[C++ Library]MITIE: library and tools for information extraction
9 个回复 - 1670 次查看 2018-11-12 06:19 - Nicolle - winbugs及其他软件专版

extracted - how the quest for mineral wealth is plundering the planet (2014)
1 个回复 - 730 次查看 extracted - how the quest for mineral wealth is plundering the planet (2014) (.epub)2018-11-2 08:59 - loneshark - 投资人（实务版）

Extraction of Prosody for Automatic Speaker, Language, Emotion
1 个回复 - 371 次查看 Author(s): Leena MarySeries: SpringerBriefs in Speech TechnologyPublisher: Springer International Publishing, Year: 2019ISBN: 978-3-319-91170-0,978-3-319-91171-7 Description: This updated book e ...2018-10-19 07:12 - scout但但 - 经管书评

[R Music Package]chorrrds: Music Chords Extraction
3 个回复 - 760 次查看 https://cran.r-project.org/web/packages/chorrrds/index.html2018-10-3 09:24 - Nicolle - winbugs及其他软件专版

Text Processing with Ruby: Extract Value from the Data That Surrounds You
0 个回复 - 762 次查看 https://www.amazon.ca/Text-Processing-Ruby-Extract-Surrounds/dp/16805007082016-11-29 10:00 - ReneeBK - winbugs及其他软件专版

International_Taxation_and_the_Extractive_Industries
0 个回复 - 344 次查看 The taxation of extractive industries exploiting oil, gas, or minerals is usually treated as a sovereign, national policy and administration issue. This book offers a uniquely comprehensive overview ...2018-6-22 16:03 - xdfhz - 经管书评

Investigating Cryptocurrencies: Understanding, Extracting, and Analyzing Blockch
15 个回复 - 492 次查看 English | 26 Jun. 2018 | ISBN: 1119480582 | 320 Pages | EPUB Investigate crimes involving cryptocurrencies and other blockchain technologies Bitcoin has traditionally been the payment system o ...2018-5-16 15:58 - igs816 - 经管书评

Mining big data to extract patterns and predict real-life outcomes
1 个回复 - 561 次查看【作者(必填)】 Kosinski, M., Wang, Y., Lakkaraju, H., & Leskovec, J 【文题(必填)】 Mining big data to extract patterns and predict real-life outcomes【年份(必填)】 2016 【全文链接或数据库名称(选填 ...2018-4-14 21:16 - 323191599 - 求助成功区

商业与经济周期 Cycle extraction: a comparison
1 个回复 - 392 次查看 TJ_12_2010_002 商业与经济周期 OECD Cycle extraction: a comparison of the phase-average trend method, the Hodrick-Prescott and Christiano-Fitzgerald filters OECD2018-4-13 04:32 - 虎皮11 - 经济统计专版

商业与经济周期 Cycle extraction: a comparison of the phase-average trend method
0 个回复 - 323 次查看 TJ_12_2010_002 商业与经济周期 OECD Cycle extraction: a comparison of the phase-average trend method, the Hodrick-Prescott and Christiano-Fitzgerald filters OECD2018-4-13 04:33 - 虎皮11 - 经济统计专版

Optimization of Principal Component Analysis in Feature Extraction
2 个回复 - 1084 次查看 Gao Haibo; Hong Wenxue; Cui Jianxin; Xu Yonghong; Univ. of Yanshan, Qinhuangdao This paper appears in: Mechatronics and Automation, 2007. ICMA 2007. International Conference on Issue D ...2011-7-23 22:45 - 匿名 - 求助成功区

Feature Extraction Using an Unsupervised Neural Network
0 个回复 - 414 次查看摘要：A novel unsupervised neural network for dimensionality reduction that seeks directions emphasizing multimodality is presented, and its connection to explor...http://ieeexplore.ieee.org/xpl/artic ...2018-2-6 11:30 - a智多星 - 人工智能论文版

Data Mining as Selective Theory Extraction in Probabilistic Logic
0 个回复 - 370 次查看摘要：There has been much recent work investigating the reinforcement of glassy polymers with nanoparticles, and much excitement has been generated by some appar...http://www.researchgate.net/publicat ...2018-2-5 02:29 - 论文库 - 人工智能论文版

Real time selection of scheduling rules and knowledge extraction via dynami..
0 个回复 - 368 次查看摘要：A new scheduling system for selecting dispatching rules in real time is developed by combining the techniques of simulation, data mining, and statistical p...http://www.tandfonline.com/doi/full/ ...2018-2-2 04:00 - AIworld - 人工智能论文版

Natural Language Processing Method Accurately Classifies and Extracts Unstr..
0 个回复 - 306 次查看摘要：Develop and test natural language processing tools for the evaluation and automated processing of electronic medical records for patients presenting with acute infarctsWith the advent of electro ...2018-1-30 20:59 - 论文库 - 人工智能论文版

Machine Learning for Information Extraction from Online Documents
1 个回复 - 352 次查看摘要：Abstract Introduction The experiment described here was designed for two things: to test the feasibility of a learning approach to information extraction i...http://www.researchgate.net/publicat ...2018-1-28 10:30 - AIworld - 人工智能论文版

Hybrid quantum-inspired genetic algorithm for extracting association rule i..
0 个回复 - 405 次查看摘要：Abstract Data mining is most commonly used in attempts to induce association rules from transaction data. This paper proposes a novel data mining algorithm...http://www.researchgate.net/publicat ...2018-1-28 07:00 - 人工智能-AI - 人工智能论文版

Toward an automatic method for extracting cancer- and other disease-related..
0 个回复 - 377 次查看摘要：ABSTRACT A major goal of biomedical research in personalized medicine is to find relationships between mutations and their corresponding disease phenotype...原文链接:http://pubmedcentralcanada. ...2018-1-26 03:29 - DL-er - 人工智能论文版

Finite-state transducer cascades to extract named entities in texts
0 个回复 - 422 次查看摘要：A lot of Named Entity Extraction Systems were created in English thanks to the impulse of MUC conferences. This article describes a Finite-State Transducer...原文链接:http://dl.acm.org/citation. ...2018-1-25 16:30 - 人工智能-AI - 人工智能论文版

Automatically extracting cancer disease characteristics from pathology repo..
0 个回复 - 439 次查看摘要：We introduce an extensible and modifiable knowledge representation model to represent cancer disease characteristics in a comparable and consistent fashion...原文链接:http://dl.acm.org/citation. ...2018-1-25 15:00 - AIworld - 人工智能论文版

Overview of the protein-protein interaction annotation extraction task of B..
0 个回复 - 360 次查看摘要：Background: The biomedical literature is the primary information source for manual protein-protein interaction annotations. Text-mining systems have been ...原文链接:http://link.springer.com/ar ...2018-1-25 12:00 - 人工智能-AI - 人工智能论文版

A text processing pipeline to extract recommendations from radiology report..
0 个回复 - 387 次查看摘要：Communication of follow-up recommendations when abnormalities are identified on imaging studies is prone to error. The absence of an automated system to id...原文链接:http://europepmc.org/abstra ...2018-1-24 13:00 - AIworld - 人工智能论文版

Natural language processing to extract medical problems from electronic cli..
0 个回复 - 380 次查看摘要：In this study, we evaluate the performance of a Natural Language Processing (NLP) application designed to extract medical problems from narrative text clin...原文链接:http://jamia.oxfordjournals ...2018-1-20 04:30 - 人工智能-AI - 人工智能论文版

METIS: multiple extraction techniques for informative sentences
0 个回复 - 383 次查看摘要：METIS is a web-based integrated annotation tool. From single query sequences, the PRECIS component allows users to generate structured protein family repor...原文链接:http://www.ncbi.nlm.nih.gov ...2018-1-16 07:00 - 人工智能-AI - 人工智能论文版

Analysis and Evaluation of Techniques for the Extraction of Classes in the ..
0 个回复 - 387 次查看摘要：This paper analyzes and evaluates, in the context of Ontology learning, some techniques to identify and extract candidate terms to classes of a taxonomy. B...原文链接:http://www.springerlink.com ...2018-1-7 23:30 - 人工智能-AI - 人工智能论文版

Rules Extraction using Data Mining in Historical Data
0 个回复 - 331 次查看摘要：Ecological common sense says that decreased solar energy should reduce herbivore production because of reduced energy flow through primary producers. Howev...原文链接:http://www.igi-global.com/c ...2018-1-7 21:30 - DL-er - 人工智能论文版

Strategies for Medical Data Extraction and Presentation Part 1: Current Lim..
0 个回复 - 343 次查看摘要：Data overload is a burgeoning challenge for the medical imaging community; with resulting technical, clinical, and economic ramifications. A primary concer...原文链接:http://link.springer.com/ar ...2018-1-7 13:00 - a智多星 - 人工智能论文版

Knowledge Extraction from Transducer Neural Networks
1 个回复 - 477 次查看摘要：Previously neural networks have shown interesting performance results for tasks such as classification, but they still suffer from an insufficient focus on...原文链接:http://link.springer.com/ar ...2018-1-6 19:30 - 人工智能-AI - 人工智能论文版

Extracting timing and status descriptors for colonoscopy testing from elect..
0 个回复 - 336 次查看摘要：Colorectal cancer (CRC) screening rates are low despite confirmed benefits. The authors investigated the use of natural language processing (NLP) to identi...原文链接:http://jamia.oxfordjournals ...2018-1-6 10:30 - a智多星 - 人工智能论文版

Learning Information Extraction Rules for Semi-Structured and Free Text
0 个回复 - 314 次查看摘要：A wealth of on-line text information can be made available to automatic processing by information extraction (IE) systems. Each IE application needs a sepa...原文链接:http://link.springer.com/ar ...2018-1-5 21:59 - AIworld - 人工智能论文版

Extract Rules by Using Rough Set and Knowledge—Based NN
0 个回复 - 384 次查看摘要：In this paper,rough set theory is used to extract roughly-correct inference rules from information systems.Based on this idea,the learning algorithm ERCR is presented.In order to refine the lear ...2018-1-4 18:20 - 人工智能-AI - 人工智能论文版

GENIES: a natural-language processing system for the extraction of molecula..
0 个回复 - 644 次查看摘要：Systems that extract structured information from natural language passages have been highly successful in specialized domains. The time is opportune for de...原文链接:http://bioinformatics.oxfor ...2018-1-4 12:30 - 人工智能-AI - 人工智能论文版

Using Natural Language Processing to Extract Drug-Drug Interaction Informat..
0 个回复 - 350 次查看摘要：Competitive swimmers require a high aerobic capacity to support the sustained performance of severe exercise. Maximal oxygen uptake values and blood lactat...原文链接:http://www.aclweb.org/antho ...2018-1-4 05:00 - 人工智能-AI - 人工智能论文版

A natural language processing (NLP) program effectively extracts key pathol..
0 个回复 - 444 次查看摘要：Natural language processing (NLP) software programs have been widely developed to transform complex free text into simplified organized data. Potential applications in the field of medicine incl ...2018-1-3 01:59 - 论文库 - 人工智能论文版

Automated Extraction of BI-RADS Final Assessment Categories from Radiology ..
0 个回复 - 326 次查看摘要：The objective of this study is to evaluate a natural language processing (NLP) algorithm that determines American College of Radiology Breast Imaging Repor...原文链接:http://pubmedcentralcanada. ...2018-1-2 18:00 - AIworld - 人工智能论文版

Using natural language processing to extract mammographic findings
0 个回复 - 378 次查看摘要：Our NLP system successfully extracts clinically useful information from mammography reports. Moreover, SAS is a feasible platform for implementing NLP algo...原文链接:http://www.ncbi.nlm.nih.gov ...2018-1-2 16:00 - AIworld - 人工智能论文版

Extracting data from electronic medical records: validation of a natural la..
0 个回复 - 371 次查看摘要：Abstract OBJECTIVE: The extraction of specific data from electronic medical records (EMR) remains tedious and is often performed manually. Natural language...原文链接:http://link.springer.com/ar ...2018-1-1 21:00 - a智多星 - 人工智能论文版

Extracting important information from Chinese Operation Notes with natural ..
0 个回复 - 391 次查看摘要：Extracting information from unstructured clinical narratives is valuable for many clinical applications. Although natural Language Processing (NLP) methods...原文链接:http://europepmc.org/abstra ...2018-1-1 15:00 - DL-er - 人工智能论文版

Extracting information on pneumonia in infants using natural language proce..
0 个回复 - 428 次查看摘要：Abstract Natural language processing (NLP) is critical for improvement of the healthcare process because it can encode clinical data in patient documents. ...原文链接:http://www.europepmc.org/ab ...2018-1-1 06:30 - DL-er - 人工智能论文版

Unsupervised neural network learning procedures for feature extraction and ..
0 个回复 - 384 次查看摘要：In this article, we review unsupervised neural network learning procedures which can be applied to the task of preprocessing raw data to extract useful fea...原文链接:http://link.springer.com/ar ...2017-12-30 14:00 - 人工智能-AI - 人工智能论文版

Social Media Data Extraction and Content Analysis
28 个回复 - 1921 次查看 by Shalin Hai-Jew English | 2017 | ISBN: 1522506489 | 526 Pages | PDF | 185 MB In today's society, the utilization of social media platforms has become an abundant forum for individuals to post, ...2017-10-26 13:50 - igs816 - 经管书评

Interest Rates and Equity Extraction during the Housing Boom
1 个回复 - 813 次查看【作者(必填)】Bhutta, Neil, and Benjamin J. Keys 【文题(必填)】Interest Rates and Equity Extraction during the Housing Boom 【年份(必填)】American Economic Review, 106(7): 1742-74 【全文链接或 ...2017-10-11 17:44 - xzguan - 求助成功区

Juicer, a data mining approach to information extraction from the WWW
0 个回复 - 474 次查看摘要：We present a novel approach to automatic text mining on the World Wide Web. Considering the fact that the enormously dynamic growth of the WWW results in a...原文链接:http://www.researchgate.net ...2017-9-28 17:00 - 论文库 - 人工智能论文版

Three-objective genetics-based machine learning for linguistic rule extraction
0 个回复 - 553 次查看摘要：This paper shows how a small number of linguistically interpretable fuzzy rules can be extracted from numerical data for high-dimensional pattern classific...原文链接:http://www.sciencedirect.co ...2017-9-15 17:00 - a智多星 - 人工智能论文版

Machine Learning for Information Extraction in Informal Domains
0 个回复 - 366 次查看摘要：We consider the problem of learning to perform information extraction in domains where linguistic processing is problematic, such as Usenet posts, email, a...原文链接:http://link.springer.com/ar ...2017-9-15 16:00 - AIworld - 人工智能论文版

Housing Supply Elasticity and Rent Extraction by State and Local Governments
1 个回复 - 670 次查看【作者(必填)】Rebecca Diamond 【文题(必填)】Housing Supply Elasticityand Rent Extraction by State and Local Governments 【年份(必填)】American EconomicJournal: Economic Policy Vol. 9,Issue 1 F ...2017-7-2 11:08 - 飞天玄舞6 - 求助成功区

A simple and sensitive method to extract bacterial, yeast and fungal DNA from bl
2 个回复 - 1014 次查看【作者(必填)】Beverley C. Millara, Xu Jirua, John E. Moorea, b, , , John A.P. Earleb 【文题(必填)】A simple and sensitive method to extract bacterial, yeast and fungal DNA from blood culture materi ...2012-2-28 21:08 - wyship - 求助成功区

Environmental Costs of Shale Gas Extraction in China
6 个回复 - 880 次查看【作者(必填)】H Zhang，S Li，H Li 【文题(必填)】Environmental Costs of Shale Gas Extraction in China 【年份(必填)】2014 【全文链接或数据库名称(选填)】中国地球科学联合学术年会, 2014 来自万方2017-4-17 10:27 - 41251314hh - 求助成功区

Extracting Inflation from Stock Returns to Test Purchasing Power Parity
2 个回复 - 658 次查看【作者(必填)】 Chowdhry, Bhagwan, Richard Roll and Yihong Xia. 【文题(必填)】 Extracting Inflation from Stock Returns to Test Purchasing Power Parity 【年份(必填)】 2005 【全文链接或数据库名称( ...2017-4-3 09:03 - peter - 求助成功区

The China Journal之4 The Politics of Fee Extraction from Private Enterprises
4 个回复 - 1109 次查看【作者(必填)】Eun Kyong Choi 【文题(必填)】The Politics of Fee Extraction from Private Enterprises, 1996-2003【年份(必填)】No. 62, Jul., 2009 【全文链接或数据库名称(选填)】http://www.jstor.org/s ...2013-12-31 12:01 - 青青子矜 - 求助成功区

The China Journal 之2 The Politics of Fee Extraction from Private Enterprises
3 个回复 - 1000 次查看【作者(必填)】Eun Kyong Choi 【文题(必填)】 The Politics of Fee Extraction from Private Enterprises, 1996-2003 【年份(必填)】 No. 62, Jul., 2009 【全文链接或数据库名称(选填)】 http://www. ...2013-12-31 11:56 - 青青子矜 - 求助成功区

关于字符串操作stringr中的str_extract的问题
6 个回复 - 6262 次查看看到字符串操作的一下代码： str_extract(x ,'[0-9]+~[0-9]+|[0-9]+') 其中，x表示要截取的字符串名称，“[0-9]+~[0-9]+”表示要截取出一段用~连接的数字，但|是什么意思？我试了下去掉|后面的结果也是一样的啊。。 ...2016-12-26 09:44 - bangmingshaw - R语言论坛

求助解释：unlist(str_extract(are,'[0-9]+~[0-9]+|[0-9]+'))
1 个回复 - 1227 次查看 unlist(str_extract(are,'[0-9]+~[0-9]+|[0-9]+')) 这个里面的|表示啥意思啊？求大神解释啊2016-12-22 17:00 - bangmingshaw - R语言论坛

Alignment vs rent-extraction effects of stock options. A conceptual model
1 个回复 - 623 次查看【作者(必填)】S Catuogno, S Catuogno, S Saggese 【文题(必填)】Alignment vs rent-extraction effects of stock options. A conceptual model 【年份(必填)】2016 【全文链接或数据库名称(选填)】http:/ ...2016-12-7 21:20 - fxq2327 - 求助成功区

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