首页 > 最新文献

Ewing Marion Kauffman Foundation Research Paper Series最新文献

英文 中文
Skilled Human Capital and High-Growth Entrepreneurship: Evidence from Inventor Inflows 熟练人力资本与高增长创业:来自发明家流入的证据
Pub Date : 2020-07-01 DOI: 10.3386/w27605
B. Balsmeier, L. Fleming, M. Marx, S. R. Shin
To what extent does high-growth entrepreneurship depend on skilled human capital? We estimate the impact of the inflow of inventors into a region on the founding of high-growth firms, instrumenting mobility with the county-level share of millions of inventor surnames in the 1940 U.S. Census. Inventor immigration increases county-level high-growth entrepreneurship; estimates range from 29-55 immigrating inventors for each new high-growth firm, depending on the region and model. We also find a smaller but significant negative effect of inventor arrival on entrepreneurship in nearby counties.
高增长的企业家精神在多大程度上依赖于熟练的人力资本?我们用1940年美国人口普查中数以百万计的发明家姓氏在县级所占的比例来衡量发明家流入一个地区对高增长公司创立的影响。发明家移民增加了县级高增长创业;根据地区和模式的不同,估计每家高增长公司的移民发明家数量在29-55人之间。我们还发现,在邻近的县,发明家到来对创业有较小但显著的负面影响。
{"title":"Skilled Human Capital and High-Growth Entrepreneurship: Evidence from Inventor Inflows","authors":"B. Balsmeier, L. Fleming, M. Marx, S. R. Shin","doi":"10.3386/w27605","DOIUrl":"https://doi.org/10.3386/w27605","url":null,"abstract":"To what extent does high-growth entrepreneurship depend on skilled human capital? We estimate the impact of the inflow of inventors into a region on the founding of high-growth firms, instrumenting mobility with the county-level share of millions of inventor surnames in the 1940 U.S. Census. Inventor immigration increases county-level high-growth entrepreneurship; estimates range from 29-55 immigrating inventors for each new high-growth firm, depending on the region and model. We also find a smaller but significant negative effect of inventor arrival on entrepreneurship in nearby counties.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130340380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
2019 Early-Stage Entrepreneurship in the United States: National and State Report 2019年美国早期创业:国家和州报告
Pub Date : 2020-06-01 DOI: 10.2139/ssrn.3607936
R. Fairlie, S. Desai
The Kauffman Indicators of Early-Stage Entrepreneurship is a set of measures that represents new business creation in the United States, integrating several high-quality, timely sources of information on early-stage entrepreneurship. This report presents four indicators tracking early-stage entrepreneurship for the years 1996–2019: rate of new entrepreneurs reflects the number of new entrepreneurs in a given month, opportunity share of new entrepreneurs is the percentage of new entrepreneurs who created their businesses out of opportunity instead of necessity, startup early job creation is the total number of jobs created by startups per capita, startup early survival rate is the one-year average survival rate for new employer establishments. National and state level trends are reported for all four indicators. In addition, demographic trends are reported for the rate of new entrepreneurs and opportunity share of new entrepreneurs. National Trends in Early-Stage Entrepreneurship in 2019: • Nationally, the rate of new entrepreneurs in 2019 was 0.31 percent, meaning that an average of 310 out of every 100,000 adults became new entrepreneurs in a given month. - The rate of new entrepreneurs was 0.23 percent among women and 0.38 percent among men, reflecting a slight decline for men and an essentially no change for women from the previous year. - In 2019, the rate of new entrepreneurs was the highest among Latinos (0.44 percent) and lowest among African Americans (0.24 percent). It decreased for Latinos and decreased slightly for Asians, but remained constant for African Americans and whites. - The rate of new entrepreneurs was 0.44 percent for immigrants, which is substantially higher than for native-born Americans (0.28 percent). Immigrants started businesses at a lower rate than they did in the previous year. - The rate of new entrepreneurs was highest among Americans aged 45–54 (0.36 percent) and lowest among Americans aged 20–34 (0.24 percent). It declined slightly in 2019 among all age groups except for the aged 20–34 group. • The opportunity share of new entrepreneurs nationally in 2019 was 86.9 percent. - The opportunity share of new entrepreneurs increased for women and remained roughly constant for men in 2019. - African Americans and Asians experienced increases in the opportunity share of new entrepreneurs in 2019, continuing upward trends over the past few years. The opportunity share for Latinos and whites remained roughly constant but showed a similar general positive trend over the past few years. - The opportunity share of new entrepreneurs increased for immigrants in 2019. - All age groups, except ages 45–54, experienced increases in the opportunity share, continuing upward trends since the Great Recession. • National startup early job creation in 2019 was 5.2 jobs, meaning that the average startup that hired would hire a little over 5 jobs for every 1,000 people. • Startup early survival rate was 79.6 percent in 2019, meaning that
考夫曼早期创业指标是一套反映美国新企业创建情况的指标,它整合了几个关于早期创业的高质量、及时的信息来源。本报告提出了1996-2019年跟踪早期创业的四个指标:新企业家的比率反映了一个月内新企业家的数量,新企业家的机会份额是由于机会而不是必要性而创建企业的新企业家的百分比,创业早期创造的就业机会是人均创业创造的就业机会总数,创业早期存活率是新雇主机构的一年平均存活率。报告了所有四项指标的国家和州一级趋势。此外,报告了新企业家的比率和新企业家的机会份额的人口趋势。2019年全国早期创业趋势:•2019年全国新企业家率为0.31%,这意味着平均每10万名成年人中有310人在一个月内成为新企业家。——新企业家女性占比为0.23%,男性占比为0.38%,男性占比略有下降,女性占比基本没有变化。- 2019年,拉美裔新企业家比例最高(0.44%),非洲裔最低(0.24%)。拉丁美洲人的死亡率下降,亚洲人略有下降,但非洲裔美国人和白人的死亡率保持不变。-移民的新企业家率为0.44%,大大高于本土美国人(0.28%)。与前一年相比,移民创业的比例有所下降。——新企业家的比率在45-54岁的美国人中最高(0.36%),在20-34岁的美国人中最低(0.24%)。2019年,除了20-34岁的人群外,所有年龄段的人都略有下降。•2019年全国新企业家的机会份额为86.9%。2019年,女性新企业家的机会份额有所增加,而男性的机会份额基本保持不变。- 2019年,非洲裔美国人和亚洲人在新企业家中所占的机会份额有所增加,延续了过去几年的上升趋势。拉丁裔和白人的就业机会份额大致保持不变,但在过去几年中也呈现出类似的总体积极趋势。- 2019年移民新企业家的机会份额增加。-除45-54岁外,所有年龄组的就业机会份额都有所增加,延续了自大衰退以来的上升趋势。•2019年,全国初创企业早期创造的就业岗位为5.2个,这意味着平均每1000人雇佣的初创企业将雇佣5个多一点的工作岗位。•2019年初创公司的早期存活率为79.6%,这意味着近80%的初创公司在第一年存活下来。•KESE综合指数——四个指标的同等权重的综合指数——全国为1.2。索引在零处归一化。考夫曼早期创业指标是一套反映美国新企业创建情况的指标,它整合了几个关于早期创业的高质量、及时的信息来源。
{"title":"2019 Early-Stage Entrepreneurship in the United States: National and State Report","authors":"R. Fairlie, S. Desai","doi":"10.2139/ssrn.3607936","DOIUrl":"https://doi.org/10.2139/ssrn.3607936","url":null,"abstract":"The Kauffman Indicators of Early-Stage Entrepreneurship is a set of measures that represents new business creation in the United States, integrating several high-quality, timely sources of information on early-stage entrepreneurship. This report presents four indicators tracking early-stage entrepreneurship for the years 1996–2019: rate of new entrepreneurs reflects the number of new entrepreneurs in a given month, opportunity share of new entrepreneurs is the percentage of new entrepreneurs who created their businesses out of opportunity instead of necessity, startup early job creation is the total number of jobs created by startups per capita, startup early survival rate is the one-year average survival rate for new employer establishments. National and state level trends are reported for all four indicators. In addition, demographic trends are reported for the rate of new entrepreneurs and opportunity share of new entrepreneurs. National Trends in Early-Stage Entrepreneurship in 2019: • Nationally, the rate of new entrepreneurs in 2019 was 0.31 percent, meaning that an average of 310 out of every 100,000 adults became new entrepreneurs in a given month. - The rate of new entrepreneurs was 0.23 percent among women and 0.38 percent among men, reflecting a slight decline for men and an essentially no change for women from the previous year. - In 2019, the rate of new entrepreneurs was the highest among Latinos (0.44 percent) and lowest among African Americans (0.24 percent). It decreased for Latinos and decreased slightly for Asians, but remained constant for African Americans and whites. - The rate of new entrepreneurs was 0.44 percent for immigrants, which is substantially higher than for native-born Americans (0.28 percent). Immigrants started businesses at a lower rate than they did in the previous year. - The rate of new entrepreneurs was highest among Americans aged 45–54 (0.36 percent) and lowest among Americans aged 20–34 (0.24 percent). It declined slightly in 2019 among all age groups except for the aged 20–34 group. • The opportunity share of new entrepreneurs nationally in 2019 was 86.9 percent. - The opportunity share of new entrepreneurs increased for women and remained roughly constant for men in 2019. - African Americans and Asians experienced increases in the opportunity share of new entrepreneurs in 2019, continuing upward trends over the past few years. The opportunity share for Latinos and whites remained roughly constant but showed a similar general positive trend over the past few years. - The opportunity share of new entrepreneurs increased for immigrants in 2019. - All age groups, except ages 45–54, experienced increases in the opportunity share, continuing upward trends since the Great Recession. • National startup early job creation in 2019 was 5.2 jobs, meaning that the average startup that hired would hire a little over 5 jobs for every 1,000 people. • Startup early survival rate was 79.6 percent in 2019, meaning that ","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122975962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The Gender Gap in Tech & Competitive Work Environments? Field Experimental Evidence from an Internet-of-Things Product Development Platform 科技与竞争工作环境中的性别差异?物联网产品开发平台的现场实验证据
Pub Date : 2020-05-01 DOI: 10.3386/w27154
K. Boudreau, Nilam Kaushik
Many technology companies struggle to fill all their positions and to achieve gender parity in their ranks. One explanation for gender disparities is the possibility that men and women differ in their willingness to work under competitive organizational environments of tech firms. To investigate this question, this paper reports on a large platform-based field experiment in which 97,696 U.S. university-educated individuals were given the opportunity to join a tech-related product development activity. Individuals were randomly assigned to treatments emphasizing either competitive or collaborative interactions with other participants. We find that (1) in non-STEM fields, the competition treatment leads to a 27% drop in participation for females in comparison to males. However, in our main finding, (2) in STEM fields, we find no statistical differences in men and women’s responses to competition. The patterns are consistent with (3) men in non-STEM fields exhibiting overconfidence in their likelihood of succeeding under competition. We also find that, while participation in highest in STEM fields, (4) the ratio of female to male participation in a field is better predicted by whether the field is male- or female-dominated, than it is by whether it is a STEM field or not. We discuss theoretical interpretations and implications for organizations.
许多科技公司都在努力填补所有职位空缺,并在员工队伍中实现性别平等。性别差异的一种解释是,在竞争激烈的科技公司组织环境中,男性和女性的工作意愿可能存在差异。为了调查这个问题,本文报告了一个基于平台的大型现场实验,其中97,696名受过大学教育的美国人有机会参加与技术相关的产品开发活动。个体被随机分配到强调与其他参与者竞争或合作互动的治疗中。我们发现(1)在非stem领域,与男性相比,竞争待遇导致女性的参与度下降了27%。然而,在我们的主要发现中,(2)在STEM领域,我们发现男性和女性对竞争的反应没有统计学差异。这些模式与(3)非stem领域的男性对自己在竞争中取得成功的可能性表现出过度自信是一致的。我们还发现,虽然STEM领域的参与率最高,但(4)一个领域的男女参与率更能通过该领域是男性主导还是女性主导来预测,而不是通过该领域是否是STEM领域来预测。我们讨论理论解释和对组织的影响。
{"title":"The Gender Gap in Tech & Competitive Work Environments? Field Experimental Evidence from an Internet-of-Things Product Development Platform","authors":"K. Boudreau, Nilam Kaushik","doi":"10.3386/w27154","DOIUrl":"https://doi.org/10.3386/w27154","url":null,"abstract":"Many technology companies struggle to fill all their positions and to achieve gender parity in their ranks. One explanation for gender disparities is the possibility that men and women differ in their willingness to work under competitive organizational environments of tech firms. To investigate this question, this paper reports on a large platform-based field experiment in which 97,696 U.S. university-educated individuals were given the opportunity to join a tech-related product development activity. Individuals were randomly assigned to treatments emphasizing either competitive or collaborative interactions with other participants. We find that (1) in non-STEM fields, the competition treatment leads to a 27% drop in participation for females in comparison to males. However, in our main finding, (2) in STEM fields, we find no statistical differences in men and women’s responses to competition. The patterns are consistent with (3) men in non-STEM fields exhibiting overconfidence in their likelihood of succeeding under competition. We also find that, while participation in highest in STEM fields, (4) the ratio of female to male participation in a field is better predicted by whether the field is male- or female-dominated, than it is by whether it is a STEM field or not. We discuss theoretical interpretations and implications for organizations.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131261462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
SME: Apparently Small but of Great Derivative Value! Literature Review of Tourism SMEs to Create Employment and Access to Finance 中小企业:看起来很小,但衍生价值很大!旅游中小企业创造就业与融资渠道的文献综述
Pub Date : 2020-03-22 DOI: 10.5296/ber.v10i2.16574
G. Nure, E. Bazini, F. Madani
Contributions from various tourism SMEs to improve socio-economic development in developed countries include employment creation, improved living standards and increased family income. Despite this, you have great deals on the direct link between job creation, but there is also some controversy over who creates jobs and how they do it. Various documents say that Tourism SMEs play an important role in training young people, covering the labour deficit and generating benefits to the efficiency of the economy, innovation and overall growth. Therefore, this study will help us build the evidence needed to create Tourism SME policies and understand the core operational values of SMEs that maximize results in terms of achieving basic objectives such as job creation, increasing employee productivity and what are the financial challenges facing tourism SMEs. Policy initiatives to encourage the financial sector to be more proactive in securing tourism financing SMEs can also be envisaged, including taking steps to improve the knowledge and understanding of the tourism sector.
各种旅游中小企业对改善发达国家社会经济发展的贡献包括创造就业、提高生活水平和增加家庭收入。尽管如此,你在创造就业之间的直接联系上做了很多交易,但在谁创造就业以及他们如何创造就业方面也存在一些争议。各种文件指出,旅游中小企业在培训年轻人、弥补劳动力短缺、提高经济效率、创新和整体增长方面发挥着重要作用。因此,本研究将帮助我们建立所需的证据,以制定旅游中小企业政策,并了解中小企业的核心经营价值,从而在实现创造就业机会、提高员工生产力等基本目标方面取得最大成果,以及旅游中小企业面临的财务挑战。还可以设想采取政策举措,鼓励金融部门更积极主动地为中小企业提供旅游融资,包括采取措施提高对旅游部门的认识和了解。
{"title":"SME: Apparently Small but of Great Derivative Value! Literature Review of Tourism SMEs to Create Employment and Access to Finance","authors":"G. Nure, E. Bazini, F. Madani","doi":"10.5296/ber.v10i2.16574","DOIUrl":"https://doi.org/10.5296/ber.v10i2.16574","url":null,"abstract":"Contributions from various tourism SMEs to improve socio-economic development in developed countries include employment creation, improved living standards and increased family income. Despite this, you have great deals on the direct link between job creation, but there is also some controversy over who creates jobs and how they do it. Various documents say that Tourism SMEs play an important role in training young people, covering the labour deficit and generating benefits to the efficiency of the economy, innovation and overall growth. Therefore, this study will help us build the evidence needed to create Tourism SME policies and understand the core operational values of SMEs that maximize results in terms of achieving basic objectives such as job creation, increasing employee productivity and what are the financial challenges facing tourism SMEs. Policy initiatives to encourage the financial sector to be more proactive in securing tourism financing SMEs can also be envisaged, including taking steps to improve the knowledge and understanding of the tourism sector.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"207 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114393456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
2018 New Employer Business Report: National and State Trends 2018年新雇主商业报告:全国和州趋势
Pub Date : 2020-03-01 DOI: 10.2139/ssrn.3375009
S. Desai, B. T. Howe, Hayden Murray
The Kauffman New Employer Business Indicators series has been compiled in an effort to provide information on new employer businesses, a subset of all entrepreneurial activity. The series provides users with measures to track trends in the emergence of these businesses, their representation in the population and among all firms, and the time it takes these businesses to become employers. This report presents indicators for the United States and all 50 states and Washington, D.C., beginning in 2005 and through the most recent year of data available for each metric. Rate of new employer business actualization: This indicator reflects the proportion of all new business applications that become employer businesses within eight quarters. In 2018, the national rate of new employer business actualization was 11.33%, meaning that for every 100 new business applications, about 11 businesses made a first payroll within eight quarters. For the same year, the value of this indicator ranged from 6.59% in Delaware to 17.36% in Washington, with a median of 11.30% across states. Rate of new employer businesses: The rate of new employer businesses reflects new employer businesses in the population. The national rate of new employer businesses was 0.12 in 2018, meaning there were 120 new employer businesses for every 100,000 people. This ranged from 0.07 in West Virginia to 0.31 in Wyoming in 2018, with a median of 0.12 across states. New employer business velocity: New employer business velocity is the average amount of time it takes, in quarters, for a new business application to become an employer, assuming it does so within eight quarters. In 2014, the national new employer business velocity was 1.92, indicating that, on average, approximately six months pass between business application and first payroll. For the same year, the value of this indicator ranged from 1.46 in North Dakota to 2.37 in Washington, D.C., with a median of 1.83. Employer business newness: Employer business newness captures new employer businesses as a share of employer firms, regardless of age. In 2016, national employer business newness was 6.8%, meaning that almost 7 out of every 100 employer businesses were new businesses that made a first payroll within the first eight quarters. This ranged from 4.44% in Washington, D.C. to 8.67% in Nevada in 2016, with a median of 5.99%. We also calculate the New Employer Business Actualization Speed (NEBAS) Index, a snapshot reflecting both the emergence (actualization) and speed (velocity) of new employer businesses. In 2014 (the most recent year for which data are available), the national NEBAS index was 0.76. The value of this measure in 2014 ranged from 0.60 in Washington, D.C., to 0.93 in South Dakota, with a median of 0.79 across states. The Kauffman New Employer Business Indicators series has been compiled in an effort to provide information on new employer businesses and provides users with measures to track trends in th
考夫曼新雇主商业指标系列的编制是为了提供关于新雇主商业的信息,这是所有创业活动的一个子集。该系列为用户提供了跟踪这些企业出现趋势的措施,它们在人口和所有公司中的代表性,以及这些企业成为雇主所需的时间。本报告介绍了美国、所有50个州和华盛顿特区的指标,从2005年开始,一直到每项指标可获得的最近一年的数据。新雇主业务实现率:该指标反映了所有新业务申请在8个季度内成为雇主业务的比例。2018年,全国新雇主创业实现率为11.33%,这意味着每100个新企业申请中,约有11个企业在8个季度内首次发放工资。同年,该指标的值从特拉华州的6.59%到华盛顿州的17.36%不等,各州的中位数为11.30%。新雇主企业比率:新雇主企业比率反映了人口中新雇主企业的比例。2018年,全国新雇主企业比率为0.12,每10万人有120家新雇主企业。2018年,这一比例从西弗吉尼亚州的0.07到怀俄明州的0.31不等,各州的中位数为0.12。新雇主业务速度:新雇主业务速度是一个新业务应用程序成为雇主所需的平均时间,以季度为单位,假设它在8个季度内完成了这一过程。2014年,全国新雇主业务速度为1.92,这表明,从企业申请到首次发放工资平均大约需要6个月的时间。同年,该指标的数值从北达科他州的1.46到华盛顿特区的2.37不等,中位数为1.83。雇主业务新颖性:雇主业务新颖性捕获了新雇主业务在雇主公司中的份额,无论其年龄如何。2016年,全国雇主企业新创率为6.8%,这意味着每100家雇主企业中有近7家是在前8个季度发放首次工资的新企业。2016年,这一比例从华盛顿特区的4.44%到内华达州的8.67%不等,中位数为5.99%。我们还计算了新雇主业务实现速度(NEBAS)指数,这是反映新雇主业务出现(实现)和速度(速度)的快照。2014年(可获得数据的最近年份),全国NEBAS指数为0.76。2014年,该指标的值从华盛顿特区的0.60到南达科他州的0.93不等,各州的中位数为0.79。考夫曼新雇主业务指标系列的编制旨在提供有关新雇主业务的信息,并为用户提供跟踪这些业务出现趋势的措施,它们在人口和所有公司中的代表性,以及这些业务成为雇主所需的时间。
{"title":"2018 New Employer Business Report: National and State Trends","authors":"S. Desai, B. T. Howe, Hayden Murray","doi":"10.2139/ssrn.3375009","DOIUrl":"https://doi.org/10.2139/ssrn.3375009","url":null,"abstract":"The Kauffman New Employer Business Indicators series has been compiled in an effort to provide information on new employer businesses, a subset of all entrepreneurial activity. The series provides users with measures to track trends in the emergence of these businesses, their representation in the population and among all firms, and the time it takes these businesses to become employers. This report presents indicators for the United States and all 50 states and Washington, D.C., beginning in 2005 and through the most recent year of data available for each metric. \u0000 \u0000Rate of new employer business actualization: This indicator reflects the proportion of all new business applications that become employer businesses within eight quarters. In 2018, the national rate of new employer business actualization was 11.33%, meaning that for every 100 new business applications, about 11 businesses made a first payroll within eight quarters. For the same year, the value of this indicator ranged from 6.59% in Delaware to 17.36% in Washington, with a median of 11.30% across states. \u0000 \u0000Rate of new employer businesses: The rate of new employer businesses reflects new employer businesses in the population. The national rate of new employer businesses was 0.12 in 2018, meaning there were 120 new employer businesses for every 100,000 people. This ranged from 0.07 in West Virginia to 0.31 in Wyoming in 2018, with a median of 0.12 across states. \u0000 \u0000New employer business velocity: New employer business velocity is the average amount of time it takes, in quarters, for a new business application to become an employer, assuming it does so within eight quarters. In 2014, the national new employer business velocity was 1.92, indicating that, on average, approximately six months pass between business application and first payroll. For the same year, the value of this indicator ranged from 1.46 in North Dakota to 2.37 in Washington, D.C., with a median of 1.83. \u0000 \u0000Employer business newness: Employer business newness captures new employer businesses as a share of employer firms, regardless of age. In 2016, national employer business newness was 6.8%, meaning that almost 7 out of every 100 employer businesses were new businesses that made a first payroll within the first eight quarters. This ranged from 4.44% in Washington, D.C. to 8.67% in Nevada in 2016, with a median of 5.99%. \u0000 \u0000We also calculate the New Employer Business Actualization Speed (NEBAS) Index, a snapshot reflecting both the emergence (actualization) and speed (velocity) of new employer businesses. In 2014 (the most recent year for which data are available), the national NEBAS index was 0.76. The value of this measure in 2014 ranged from 0.60 in Washington, D.C., to 0.93 in South Dakota, with a median of \u00000.79 across states. \u0000 \u0000The Kauffman New Employer Business Indicators series has been compiled in an effort to provide information on new employer businesses and provides users with measures to track trends in th","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116576095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Platform Economy and Geography: Restructuring the Space of Capitalist Accumulation 平台经济与地理学:资本积累空间的重构
Pub Date : 2019-12-03 DOI: 10.2139/ssrn.3497978
M. Kenney, J. Zysman
Digital online platform firms are reorganizing the geography of how value is created, who captures it, and where. This essay argues that economic geographers have underestimated the power of platform and the firms that control them. We further demonstrate the remarkable concentration of these firms on the U.S. West Coast even while they organize global ecosystems. We suggest that a new spatial fix for the core of the global capitalist economy is emerging. We build upon a taxonomy of platform economy labor types and the location of the various types of labor and the implications of the ability of platforms to extract value from this labor. To illustrate, the impact on the geography of value creation, we undertake cases studies of two platforms, Amazon and Google Maps to explicate their effects upon the location of economic activity. Platforms are increasingly reorganizing labor and the location of value creation We argue that platforms are a new organizational form that is the result of an asymmetric power relationship between a platform and an ecosystem of complementers and users that interact and transact through platform. These platform leaders have the largest data sets and have created enormous teams of the best AI, machine learning researchers, and, finally, have enormous reservoirs of capital with which to capture new technologies that may threaten them.
数字在线平台公司正在重新组织价值如何创造、谁获得价值以及在哪里创造价值的格局。本文认为,经济地理学家低估了平台和控制平台的公司的力量。我们进一步展示了这些公司在美国西海岸的显著集中,尽管它们组织了全球生态系统。我们认为,全球资本主义经济核心的一个新的空间定位正在出现。我们建立了一个平台经济劳动类型的分类,以及各种劳动类型的位置,以及平台从这种劳动中提取价值的能力的含义。为了说明对价值创造地理位置的影响,我们对亚马逊和谷歌地图这两个平台进行了案例研究,以解释它们对经济活动地点的影响。我们认为,平台是一种新的组织形式,是平台与通过平台进行互动和交易的互补者和用户组成的生态系统之间不对称权力关系的结果。这些平台领导者拥有最大的数据集,并创建了由最优秀的人工智能和机器学习研究人员组成的庞大团队,最后,他们拥有巨大的资本储备,可以利用这些资本获取可能威胁到他们的新技术。
{"title":"The Platform Economy and Geography: Restructuring the Space of Capitalist Accumulation","authors":"M. Kenney, J. Zysman","doi":"10.2139/ssrn.3497978","DOIUrl":"https://doi.org/10.2139/ssrn.3497978","url":null,"abstract":"Digital online platform firms are reorganizing the geography of how value is created, who captures it, and where. This essay argues that economic geographers have underestimated the power of platform and the firms that control them. We further demonstrate the remarkable concentration of these firms on the U.S. West Coast even while they organize global ecosystems. We suggest that a new spatial fix for the core of the global capitalist economy is emerging. We build upon a taxonomy of platform economy labor types and the location of the various types of labor and the implications of the ability of platforms to extract value from this labor. To illustrate, the impact on the geography of value creation, we undertake cases studies of two platforms, Amazon and Google Maps to explicate their effects upon the location of economic activity. Platforms are increasingly reorganizing labor and the location of value creation We argue that platforms are a new organizational form that is the result of an asymmetric power relationship between a platform and an ecosystem of complementers and users that interact and transact through platform. These platform leaders have the largest data sets and have created enormous teams of the best AI, machine learning researchers, and, finally, have enormous reservoirs of capital with which to capture new technologies that may threaten them.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124015895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
The Close Relationship Between Management Practices and Corporate Culture 管理实践与企业文化的密切关系
Pub Date : 2019-09-30 DOI: 10.2139/ssrn.3462116
D. Sull, Hyosuk Kang, Neil C. Thompson
A growing body of literature finds that a healthy corporate culture is associated with superior financial performance. A separate stream of research has found that a firm’s adoption of management “best practices” is correlated with higher efficiency and productivity. To date, the cultural and management practices literatures have proceeded in parallel, with few studies considering the relationship between an organization’s processes and its culture. This paper uses data from a carefully-designed survey of 370 organizations and nearly ten thousand managers to simultaneously measure corporate culture and management practices. Our key finding is that the quality of a company’s management practices and health of its corporate culture are highly correlated. This implies that studies which measure either culture or processes in isolation are likely to overstate their impact on performance. We also provide suggestive evidence that management practices may cause changes in corporate culture, or at least that this effect is stronger than the reverse.
越来越多的文献发现,健康的企业文化与卓越的财务业绩有关。另一项独立的研究发现,公司采用管理“最佳实践”与更高的效率和生产力相关。迄今为止,文化和管理实践的文献是并行进行的,很少有研究考虑到组织的过程和文化之间的关系。本文使用的数据来自一个精心设计的调查370个组织和近万名管理者,同时衡量企业文化和管理实践。我们的主要发现是,公司管理实践的质量与其企业文化的健康程度是高度相关的。这意味着,孤立地衡量文化或流程的研究可能夸大了它们对绩效的影响。我们还提供了启发性的证据,证明管理实践可能会导致企业文化的变化,或者至少这种影响比相反的影响更强。
{"title":"The Close Relationship Between Management Practices and Corporate Culture","authors":"D. Sull, Hyosuk Kang, Neil C. Thompson","doi":"10.2139/ssrn.3462116","DOIUrl":"https://doi.org/10.2139/ssrn.3462116","url":null,"abstract":"A growing body of literature finds that a healthy corporate culture is associated with superior financial performance. A separate stream of research has found that a firm’s adoption of management “best practices” is correlated with higher efficiency and productivity. To date, the cultural and management practices literatures have proceeded in parallel, with few studies considering the relationship between an organization’s processes and its culture. This paper uses data from a carefully-designed survey of 370 organizations and nearly ten thousand managers to simultaneously measure corporate culture and management practices. Our key finding is that the quality of a company’s management practices and health of its corporate culture are highly correlated. This implies that studies which measure either culture or processes in isolation are likely to overstate their impact on performance. We also provide suggestive evidence that management practices may cause changes in corporate culture, or at least that this effect is stronger than the reverse.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127755386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Business Creation, Incorporation, and the Role of Personal Bankruptcy Protection: Evidence from the BAPCPA 企业创建、注册和个人破产保护的作用:来自美国破产法协会的证据
Pub Date : 2019-09-30 DOI: 10.2139/ssrn.3461785
Rafael P. Ribas
This paper investigates how business creation, earnings, and survival are related to incorporation and personal bankruptcy codes. In theory, individual debtor protection might either affect entrepreneurship or just prevent the incorporation of household firms. To examine this issue, I exploit the bankruptcy reform of 2005 as an exogenous reduction in the protection granted by homestead exemptions. Generous exemptions are found to encourage low-skilled entrepreneurs to sustain unincorporated firms. However, these exemptions also encourage high-skilled entrepreneurs to undertake profitable ventures. The evidence is consistent with new entrepreneurs often relying on unincorporated forms as the stepping-stone to a successful business.
本文研究了企业创建、盈利和生存与公司和个人破产法的关系。理论上,个人债务人保护可能会影响企业家精神,或者只是阻止家庭企业的成立。为了研究这个问题,我利用了2005年的破产改革,作为对宅地豁免所给予的保护的外生减少。慷慨的豁免鼓励低技能的企业家维持未注册的公司。然而,这些豁免也鼓励高技能企业家从事有利可图的企业。有证据表明,新企业家往往依靠非公司形式作为成功企业的垫脚石。
{"title":"Business Creation, Incorporation, and the Role of Personal Bankruptcy Protection: Evidence from the BAPCPA","authors":"Rafael P. Ribas","doi":"10.2139/ssrn.3461785","DOIUrl":"https://doi.org/10.2139/ssrn.3461785","url":null,"abstract":"This paper investigates how business creation, earnings, and survival are related to incorporation and personal bankruptcy codes. In theory, individual debtor protection might either affect entrepreneurship or just prevent the incorporation of household firms. To examine this issue, I exploit the bankruptcy reform of 2005 as an exogenous reduction in the protection granted by homestead exemptions. Generous exemptions are found to encourage low-skilled entrepreneurs to sustain unincorporated firms. However, these exemptions also encourage high-skilled entrepreneurs to undertake profitable ventures. The evidence is consistent with new entrepreneurs often relying on unincorporated forms as the stepping-stone to a successful business.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115390567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Occupational Impact of Artificial Intelligence: Labor, Skills, and Polarization 人工智能对职业的影响:劳动力、技能和两极分化
Pub Date : 2019-09-08 DOI: 10.2139/ssrn.3368605
E. Felten, Manav Raj, Robert C. Seamans
Although artificial intelligence (AI) promises to spur economic growth, there is widespread concern that it may replace human labor. We investigate the link between AI and labor by creating a new measure that we call the AI Occupational Impact (AIOI). The AIOI measure links advances in specific applications of AI, such as image recognition, translation, or the ability to play strategic games, to workplace abilities and occupations. We use this measure to study the relationship between AI and wages, employment, and labor market polarization. We provide evidence that, on average, occupations impacted by AI experience a small but positive change in wages, but no change in employment. We also provide evidence that the positive correlation with wages is driven primarily by occupations with higher software skill requirements, and that higher-income occupations have a strong positive relationship between our measure of AI impact and both employment and wages. These findings suggest that access to complementary skills and technologies may play an important role in determining the impact of AI, and that AI has the potential to exacerbate labor market polarization.
尽管人工智能(AI)有望刺激经济增长,但人们普遍担心它可能会取代人类劳动。我们通过创建一个我们称之为人工智能职业影响(AIOI)的新指标来调查人工智能与劳动力之间的联系。AIOI指标将人工智能的具体应用,如图像识别、翻译或玩战略游戏的能力,与工作能力和职业联系起来。我们使用这一指标来研究人工智能与工资、就业和劳动力市场两极分化之间的关系。我们提供的证据表明,平均而言,受人工智能影响的职业在工资方面经历了微小但积极的变化,但在就业方面没有变化。我们还提供证据表明,与工资的正相关主要是由对软件技能要求较高的职业驱动的,高收入职业在我们对人工智能影响的衡量与就业和工资之间存在强烈的正相关关系。这些发现表明,获得互补技能和技术可能在决定人工智能的影响方面发挥重要作用,人工智能有可能加剧劳动力市场的两极分化。
{"title":"The Occupational Impact of Artificial Intelligence: Labor, Skills, and Polarization","authors":"E. Felten, Manav Raj, Robert C. Seamans","doi":"10.2139/ssrn.3368605","DOIUrl":"https://doi.org/10.2139/ssrn.3368605","url":null,"abstract":"Although artificial intelligence (AI) promises to spur economic growth, there is widespread concern that it may replace human labor. We investigate the link between AI and labor by creating a new measure that we call the AI Occupational Impact (AIOI). The AIOI measure links advances in specific applications of AI, such as image recognition, translation, or the ability to play strategic games, to workplace abilities and occupations. We use this measure to study the relationship between AI and wages, employment, and labor market polarization. We provide evidence that, on average, occupations impacted by AI experience a small but positive change in wages, but no change in employment. We also provide evidence that the positive correlation with wages is driven primarily by occupations with higher software skill requirements, and that higher-income occupations have a strong positive relationship between our measure of AI impact and both employment and wages. These findings suggest that access to complementary skills and technologies may play an important role in determining the impact of AI, and that AI has the potential to exacerbate labor market polarization.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121576467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Network Trust and Trust Behaviors Among Executives in Supply Chain Interactions 供应链互动中的网络信任与高管信任行为
Pub Date : 2019-08-31 DOI: 10.2139/ssrn.3256571
Emily W. Choi, Ö. Özer, Yanchong Zheng
We integrate the results of a social network survey and a forecast information sharing experiment to examine the roles of trust and trustworthiness in impacting high-ranking executives’ decisions in supply chain interactions. The members of our executive sample have, on average, 17 years of work experience. A significant portion of them holds positions at the C-level in world-leading organizations that span a wide range of industries. By examining the roles of trust and trustworthiness in the decision making of high-ranking executives, we find strong external validation for as well as demonstrate how these nonpecuniary, behavioral factors impact the outcomes of business interactions. We employ a multimethod research design that allows us to investigate the extent to which the executives’ trust beliefs toward a relevant network of exchange partners (which we define as their “network trust”) impact their trust behaviors when engaging in business interactions with members of this network. We determine the conditions pertaining to the executives’ professional experiences that strengthen or weaken the impact of network trust on the executives’ trust behaviors in supply chain interactions. For example, executives with more diverse professional experiences rely more on network trust to shape their trust behaviors. Conversely, executives with prior positive trust experiences rely less on network trust in their trusting behaviors. We quantify that improved trust and trustworthiness can yield up to 41%, 6%, and 5% gain in the expected profit of the supplier, the retailer, and the supply chain. Our results offer tangible implications for how organizations can better leverage executives’ knowledge about how much to rely on network trust in business interactions to achieve better outcomes. This paper was accepted by Serguei Netessine, operations management.
我们整合了社会网络调查和预测信息共享实验的结果,以检验信任和可信度在影响供应链互动中高层管理人员决策中的作用。我们的高管样本成员平均有17年的工作经验。他们中的很大一部分人在世界领先的组织中担任c级职位,这些组织涵盖了广泛的行业。通过研究信任和可信度在高层管理人员决策中的作用,我们发现了强有力的外部验证,并证明了这些非金钱的行为因素如何影响业务互动的结果。我们采用了一种多方法研究设计,使我们能够调查高管对相关交换伙伴网络的信任信念(我们将其定义为他们的“网络信任”)在与该网络成员进行业务互动时影响其信任行为的程度。我们确定了与高管职业经历相关的条件,这些条件会增强或减弱网络信任对供应链互动中高管信任行为的影响。例如,职业经历越多样化的高管更依赖网络信任来塑造他们的信任行为。相反,具有正向信任经验的高管在信任行为中较少依赖网络信任。我们量化发现,提高信任和可信赖度可以使供应商、零售商和供应链的预期利润分别增加41%、6%和5%。我们的研究结果为组织如何更好地利用高管的知识提供了切实的启示,这些知识是关于在业务交互中依赖网络信任的程度,以实现更好的结果。这篇论文被Serguei Netessine,运营管理接受。
{"title":"Network Trust and Trust Behaviors Among Executives in Supply Chain Interactions","authors":"Emily W. Choi, Ö. Özer, Yanchong Zheng","doi":"10.2139/ssrn.3256571","DOIUrl":"https://doi.org/10.2139/ssrn.3256571","url":null,"abstract":"We integrate the results of a social network survey and a forecast information sharing experiment to examine the roles of trust and trustworthiness in impacting high-ranking executives’ decisions in supply chain interactions. The members of our executive sample have, on average, 17 years of work experience. A significant portion of them holds positions at the C-level in world-leading organizations that span a wide range of industries. By examining the roles of trust and trustworthiness in the decision making of high-ranking executives, we find strong external validation for as well as demonstrate how these nonpecuniary, behavioral factors impact the outcomes of business interactions. We employ a multimethod research design that allows us to investigate the extent to which the executives’ trust beliefs toward a relevant network of exchange partners (which we define as their “network trust”) impact their trust behaviors when engaging in business interactions with members of this network. We determine the conditions pertaining to the executives’ professional experiences that strengthen or weaken the impact of network trust on the executives’ trust behaviors in supply chain interactions. For example, executives with more diverse professional experiences rely more on network trust to shape their trust behaviors. Conversely, executives with prior positive trust experiences rely less on network trust in their trusting behaviors. We quantify that improved trust and trustworthiness can yield up to 41%, 6%, and 5% gain in the expected profit of the supplier, the retailer, and the supply chain. Our results offer tangible implications for how organizations can better leverage executives’ knowledge about how much to rely on network trust in business interactions to achieve better outcomes. This paper was accepted by Serguei Netessine, operations management.","PeriodicalId":325993,"journal":{"name":"Ewing Marion Kauffman Foundation Research Paper Series","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125837333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
期刊
Ewing Marion Kauffman Foundation Research Paper Series
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1