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An empirical analysis of the external factors influencing the listing intention of Chinese enterprises

中国新通信 2019年第15期21卷 142-143页

作者： Jiageng Cao Dan Li Xue wang The Economic College North China University of Science and Technology

Based on the time series data and the actual situation of 1995 ~ 2017, this paper makes an empirical analysis of the external factors of the company’s listed psychology in China. The model which affects the psychological change factors of listed enterprises is obtained, and the test and adjustment are carried out, and some suggestions are put forward for the problems existing in the listing environment of our country.

关键词： listing intention multivariate regression trend extrapolation statistical research

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eBay listing的优化与分析

eBay Listing的优化与分析

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作者：谢杰伟华东师范大学

学位级别：硕士

跨境电商出口作为我国对外出口的新型贸易方式,有望成为中国贸易乃至整个经济的全新增长动力。eBay作为成熟的跨境电商平台,在将我国商品销往国外的进程中起着举足轻重的作用。这几年,随着越来越多的中国卖家在eBay上开店售卖产品,可以... 详细信息

跨境电商出口作为我国对外出口的新型贸易方式,有望成为中国贸易乃至整个经济的全新增长动力。eBay作为成熟的跨境电商平台,在将我国商品销往国外的进程中起着举足轻重的作用。这几年,随着越来越多的中国卖家在eBay上开店售卖产品,可以说中国卖家已成了 eBay卖家中的领先者,然而与之相应的是中国卖家面临的竞争压力也变得越来越大。listing作为eBay订单产生的源头,如何将listing不断优化以获取更多的销量已然成了每个中国eBay卖家的必修课。虽然能够影响listing的因素很多,但如果能抓住其中几个相对来说主要的因素,是否会有不一样的效果呢?然而目前国内研究eBay listing优化的文章几乎没有,本文试图打破这一僵局,希望能给众多eBay卖家在listing的优化上提供一些参考和支持。本文通过研究和分析好评率、价格、上架时间、上架数量、上架类目和竞争对手这六个因素对于eBay订单量的影响,根据订单量的变化来检测listing优化的有效性,得出了如下结论:(1)好评率的增长对销量的变化是呈正向相关的。(2)针对listing同时使用工具Markdown Manager和Promotions对销量的正向影响力并不优于只使用其中一种工具,使用一口定价的方式并不优于使用动态定价的方式。(3)选择在美国当地时间休息日的上午10点至下午6点之间进行listing的刊登,销量优势较为明显。(4)日均listing的上架数量为7到8个时,订单量的增长趋于平缓。(5)不同类目之间的listing销量差异显著,可以根据不同类目的利润差别进行listing刊登的合理配置。(6)跟卖listing需要注意采购、产品质量、侵权、售价等相关问题。

关键词： eBay listing 电商好评率订单量定价

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Diagnostic accuracy and cost-effectiveness of the CAR-OLT score in predicting cardiac risk for liver transplantation

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World Journal of Transplantation 2025年第2期15卷 138-148页

作者： Marco Biolato Luca Miele Alfonso W Avolio Giuseppe Marrone Antonio Liguori Francesco Galati Anna Petti Lidia Tomasello Daniela Pedicino Antonella Lombardo Alessia D'Aiello Maurizio Pompili Salvatore Agnes Antonio Gasbarrini Antonio Grieco Department of Medical and Surgical Sciences Centro Malattie Apparato Digerente(CEMAD)Fondazione Policlinico Universitario Agostino GemelliIstituto di Ricerca e Cura a Carattere Scientifico(IRCCS)Rome 00168LazioItaly Department of Translational Medicine and Surgery Catholic University of Sacred HeartRome 00168LazioItaly General Surgery and Liver Transplantation Unit Fondazione Policlinico Universitario Agostino GemelliIstituto di Ricerca e Cura a Carattere Scientifico(IRCCS)Rome 00168LazioItaly Department of Cardiovascular Sciences Fondazione Policlinico Universitario Agostino GemelliIstituto di Ricerca e Cura a Carattere Scientifico(IRCCS)Rome 00168LazioItaly

BACKGROUND The CAR-OLT score predicts major adverse cardiovascular events 1 year after liver transplant(LT).AIM To test the hypothesis that the CAR-OLT score may help avoid cardiac stress tests in LT *** This retrospective single-center cohort study included all adult patients undergoing elective evaluation for first cadaveric donor orthotopic LT for liver cirrhosis with or without hepatocellular carcinoma at Fondazione Policlinico Universitario Agostino Gemelli Istituto di Ricerca e Cura a Carattere Scientifico in Rome,*** contraindications for LT listing were defined after a center-specific cardiac workup,which included cardiac stress tests for most *** diagnostic accuracy of the CAR-OLT score was evaluated using the area under the receiver operating characteristic(AUROC)*** A total of 342 LT candidates were evaluated between 2015 and 2019,with a moderate cardiovascular risk profile(37%diabetes,34%hypertension,22%obesity).Of these,80(23%)candidates underwent coronary ***-one(6%)candidates were given cardiac contraindications to LT listing,48%of which were due to coronary artery *** CAR-OLT score predicted cardiac contraindications to LT listing with an AUROC of *** optimal cut-off for sensitivity was a CAR-OLT score≤23,which showed a 99%negative predictive value for cardiac contraindications to LT listing.A total of 84(25%)LT candidates with a CAR-OLT score≤23 underwent 87 non-invasive cardiac tests and 13 coronary angiographies pre-listing,with estimated costs of approximately 48000€.The estimated savings per patient was€574.70 for the Italian National Health *** A CAR-OLT score≤23 can identify LT candidates who can be safely listed without the need for cardiac stress tests,providing time and cost *** findings require external validation.

关键词： Transplantation Coronary artery disease Pharmacoeconomic listing Major adverse cardiovascular events

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Solvability identification and feasibility restoring of divergent optimal power flow problems

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Science China(Technological Sciences) 2009年第4期52卷 944-954页

作者： QuanYuan Jiang ZhenXiang Han College of Electrical Engineering Zhejiang University Hangzhou 310027 China

Optimal power flow (OPF) has been considered as an important problem in power systems. Although several excellent algorithms, such as Newton method and interior point method, have been developed to solve the OPF problem, divergences still often occur. Till now, few works have focused on the solv- ability identification and feasibility restoring of divergent OPF problems. In this paper, we propose a systematic approach to identify the solvability of divergent OPF problems, and restore a feasible solu- tion for unsolvable OPF cases. The proposed approach consists of two phases: solvability identifica- tion phase (SIP) and feasibility restoring phase (FRP). In SIP, a novel methodology based on problem transformation and active set is adopted to identify the solvability of divergent OPF problem. If a fea- sible solution can be obtained in SIP, then this divergent OPF problem is solvable, otherwise, FRP is used to restore a feasible or optimal solution by relaxing soft constraints and load shedding. In FRP, a feasibility restoring model is presented, and a priority-listing strategy of restoring actions is proposed to restore the unsolvable OPF problems. Numerical studies indicate that the proposed SIP and FRP are reliable to diagnose the solvability of the divergent OPF problems, give an index to measure the un- solvability, and restore an unsolvable OPF case.

关键词： optimal power flow solvability identification phase feasibility restoring phase active set pseudo transient continuation method priority listing

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Being accompanied to liver discharge clinic: An easy measure to identify potential liver transplant candidates among those previously considered ineligible

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World Journal of Hepatology 2019年第4期11卷 370-378页

作者： Jordan Sack Nilofar Najafian Angela DeLisle Simona Jakab Department of Internal Medicine Yale University School of Medicine Northeast Medical Group Yale New Haven Health Section of Digestive Diseases Yale University School of Medicine

BACKGROUND Patients with cirrhosis deemed ineligible for liver transplantation are usually followed in general hepatology or gastroenterology clinics, with the hope of reevaluation once they meet the appropriate criteria. Specific strategies to achieve liver transplant eligibility for these patients have not been *** To assess clinical and sociodemographic factors associated with future liver transplant eligibility among patients initially considered *** This is a retrospective study of patients with cirrhosis considered non-transplant eligible, but without absolute contraindications, who were scheduled in our transitional care liver clinic(TCLC) after discharge from an inpatient liver *** candidacy was assessed 1 year after the first scheduled TCLC *** on clinical and sociodemographic factors were *** Sixty-nine patients were identified and the vast majority were Caucasian men with alcoholic cirrhosis. 46 patients(67%) presented to the first TCLC visit. Seven of 46 patients that showed to the first TCLC visit became transplant candidates,while 0 of 23 patients that no-showed did(15.2% vs 0%, P = 0.08). Six of 7 patients who showed and became transplant eligible were accompanied by family orfriends at the first TCLC appointment, compared to 13 of 39 patients who showed and did not become transplant eligible(85.7% vs 33.3%, P = 0.01).CONCLUSION Patients who attended the first post-discharge TCLC appointment had a trend for higher liver transplant eligibility at 1 year. Being accompanied by family or friends during the first TCLC visit correlated with higher liver transplant eligibility at 1 year(attendance by family or friends was not requested). Patient and family engagement in the immediate post-hospitalization period may predict future liver transplant eligibility for patients previously declined.

关键词： Cirrhosis Transitional clinic Transplant listing Support Family

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Smart Location-Based Mobile Shopping Android Application

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Journal of Computer and Communications 2014年第8期2卷 54-63页

作者： Günay Gültekin Oguz Bayat Electrical and Computer Engineering Istanbul Kemerburgaz University Istanbul Turkey School of Science and Engineering Istanbul Kemerburgaz University Istanbul Turkey

In the paper, a smart location-based mobile shopping application for Android devices is proposed. The Geo-position of the user’s mobile device is utilized to produce location information in shopping application (SAGO). The flow of the application is that user searches a product, and then SAGO identifies the location and searches the product on the closest electronic local stores. The idea is to get the prices from each local store with in stock information and smartly listed product list. With the proposed smart filtering algorithm, mobile shopping application achieves precise and minimum error based on searching and listing results.

关键词： Mobile Shopping Android Application Unified Modeling Language (UML) Service-Oriented Modeling Framework (SOMF) Location Price Comparison listing Algorithms Filtering Personalization

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