Empirical Economics最新文献_第10页

Mucosal Malignant Melanoma of Head and Neck: A Case Series from a Single Institute and Review of Literature Abstract. 头颈部粘膜恶性黑色素瘤:来自单一研究所的病例系列和文献综述摘要。

IF 1.9 4区经济学

Empirical Economics Pub Date : 2023-12-01 Epub Date: 2023-06-24 DOI: 10.1007/s12070-023-04001-y

Sonal Dilip Trivedi, Shivang Shukla, Shivam V Pandya, Jeet Sandeep Mehta, Shashank J Pandya, Mohit Sharma, Shailesh Patel, Vikas Warikoo, Priyank Rathod, Ketul S Puj, Abhijeet Salunkhe, Keval Patel, Salahudheen Thottiyen, Jebin Aaron, Ajinkya Pawar

{"title":"Mucosal Malignant Melanoma of Head and Neck: A Case Series from a Single Institute and Review of Literature Abstract.","authors":"Sonal Dilip Trivedi, Shivang Shukla, Shivam V Pandya, Jeet Sandeep Mehta, Shashank J Pandya, Mohit Sharma, Shailesh Patel, Vikas Warikoo, Priyank Rathod, Ketul S Puj, Abhijeet Salunkhe, Keval Patel, Salahudheen Thottiyen, Jebin Aaron, Ajinkya Pawar","doi":"10.1007/s12070-023-04001-y","DOIUrl":"10.1007/s12070-023-04001-y","url":null,"abstract":"Malignant melanoma is an aggressive malignancy of melanocytes which is usually found on sun exposed areas of the body. A rare variant of this disease with no etiological association is the mucosal malignant melanoma found on all mucosal surfaces of the body including the oral cavity, respiratory mucosa and anorectal region. In the head and neck region, this disease is almost always diagnosed at an advanced stage and requires a very high index of suspicion for diagnosis. It is more commonly found in females than males.Indians are more prone to this disease as compared to Caucasians.Due to the obscure location within the oral and nasal cavity, it is clinically found at an advanced stage and requires surgical resection with adequate margins for complete eradication. This may be achieved either endoscopically in the nasal cavity or with wide local resection in the oral cavity. this in certain cases may not be feasible due to vicinity of vital structures. In such cases, adjuvant radiotherapy helps in the local control of disease. Histopathological evaluation of the specimen helps to determine aggressive biology of tumor with factors such as presence of ulceration, nodular morphology and perineural invasion being high risk features for development of local and regional recurrence.Supplementary information: The online version contains supplementary material available at 10.1007/s12070-023-04001-y.","PeriodicalId":11642,"journal":{"name":"Empirical Economics","volume":"51 1","pages":"3415-3420"},"PeriodicalIF":1.9,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10646126/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73791870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the time-varying effects of the ECB’s asset purchases 关于欧洲央行资产购买的时变效应

IF 3.2 4区经济学

Empirical Economics Pub Date : 2023-11-28 DOI: 10.1007/s00181-023-02529-0

Andrejs Zlobins

{"title":"On the time-varying effects of the ECB’s asset purchases","authors":"Andrejs Zlobins","doi":"10.1007/s00181-023-02529-0","DOIUrl":"https://doi.org/10.1007/s00181-023-02529-0","url":null,"abstract":"This paper (re-)evaluates the effectiveness of central bank asset purchases in the euro area given their prominent role in the ECB’s response to the pandemic as well as the evidence from the US suggesting diminishing returns of this policy measure over time. We analyse their macroeconomic impact in the euro area using a time-varying parameter structural vector autoregression with stochastic volatility and perform identification via sign and zero restrictions of Arias et al. (Econometrica 86:658–720, 2018), their fusion with high-frequency information approach akin to Jarociński and Karadi (Am Econ Macroecon 12:1–43, 2020) and a novel method which merges high-frequency identification with narrative sign restrictions of Antonlin-Diaz and Rubio-Ramirez (Am Econ Rev 108:2802–2829, 2018). We find that the potency of the ECB’s asset purchases to lift inflation has indeed considerably declined over time with several factors contributing to a more muted response of prices to central bank asset purchases. Our results show that the reanchoring channel is no longer active while the counterproductive effects via the mechanism outlined in Boehl et al. (Working Paper No. 691, 2020), which we dub the capacity utilization channel, have emerged lately and are further complemented with disinflationary effects stemming from the cost channel. Also, the effects passed through more standard transmission channels of central bank asset purchases like portfolio rebalancing and signalling, while still significant, appear to be less persistent recently. Overall, our findings point to a diminishing return of the ECB’s asset purchases to stabilize inflation and its expectations in the euro area.","PeriodicalId":11642,"journal":{"name":"Empirical Economics","volume":"1 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138495638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The effect of SMS nudges on higher education performance 短信推送对高等教育绩效的影响

IF 3.2 4区经济学

Empirical Economics Pub Date : 2023-11-23 DOI: 10.1007/s00181-023-02516-5

Alicia Brandt, Hamid R. Oskorouchi, Alfonso Sousa-Poza

引用次数: 0

Single-firm inference in event studies via the permutation test 通过排列检验的事件研究中的单公司推论

IF 3.2 4区经济学

Empirical Economics Pub Date : 2023-11-23 DOI: 10.1007/s00181-023-02530-7

Phuong Anh Nguyen, Michael Wolf

引用次数: 0

The effects of the investment decisions of telecommunications firms on their financial performance during the COVID-19 pandemic COVID-19大流行期间电信公司投资决策对其财务绩效的影响

IF 3.2 4区经济学

Empirical Economics Pub Date : 2023-11-23 DOI: 10.1007/s00181-023-02525-4

İlhan Çam, Nisa Özge Önal Tuğrul, Kevser Şimşek, Kamil Karaçuha, Ertuğrul Karaçuha, Gökhan Özer

{"title":"The effects of the investment decisions of telecommunications firms on their financial performance during the COVID-19 pandemic","authors":"İlhan Çam, Nisa Özge Önal Tuğrul, Kevser Şimşek, Kamil Karaçuha, Ertuğrul Karaçuha, Gökhan Özer","doi":"10.1007/s00181-023-02525-4","DOIUrl":"https://doi.org/10.1007/s00181-023-02525-4","url":null,"abstract":"In this paper we examine how the financial performance of telecommunications firms is affected by the COVID-19 pandemic, and investigate the role of capital expenditures in this relationship. The full sample consists of 383 unique telecommunications firms from 72 countries. Empirical models are estimated using ordinary least squares regression with the Driscoll–Kraay standard errors method. We find that the financial performance of telecommunications firms, on average, decreased slightly during the pandemic period. However, firms with higher capital expenditures have increased their financial performance in the pandemic era. We attribute this evidence to fewer agency problems and managerial myopia, since managers investing to meet demand surge in uncertainty may prioritize the long-term sustainability of their firms. We further find that telecommunications firms that have been most adversely affected by the repercussions of COVID-19 are those with lower capital expenditures operating in countries with less economic development and weaker institutional environments. Our main findings are robust to potential endogeneity issues, reverse causality, and alternative dependent variables. The findings have implications for company managers, investors, regulatory bodies, and policymakers.","PeriodicalId":11642,"journal":{"name":"Empirical Economics","volume":"2 2","pages":""},"PeriodicalIF":3.2,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138495635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Revisiting the effect of bank deregulation on income inequality 重新审视银行放松管制对收入不平等的影响

IF 3.2 4区经济学

Empirical Economics Pub Date : 2023-11-22 DOI: 10.1007/s00181-023-02527-2

William B. Hankins, Anna-Leigh Stone, Gary Hoover

引用次数: 0

Macroprudential policy and financial system stability: an aggregate study 宏观审慎政策与金融体系稳定:一个综合研究

IF 3.2 4区经济学

Empirical Economics Pub Date : 2023-11-20 DOI: 10.1007/s00181-023-02524-5

Hamdi Jbir, Cornel Oros, Alexandra Popescu

引用次数: 0

Inequality, growth fluctuations, and employment 不平等、增长波动和就业