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独立董事制度与我国上市公司业绩的相关性研究 被引量:16
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作者 肖曙光 《系统工程》 CSCD 北大核心 2006年第8期87-92,共6页
本文大容量(以1998~2003年期间深沪证券交易所全部A股上市公司(1277家,含部分中途退市公司为基础样本),以该期间深沪证券交易所实施过独立董事制度的全部A股上市公司(1264家)为有效样本。)、长周期(1998~2003年间.截至2003... 本文大容量(以1998~2003年期间深沪证券交易所全部A股上市公司(1277家,含部分中途退市公司为基础样本),以该期间深沪证券交易所实施过独立董事制度的全部A股上市公司(1264家)为有效样本。)、长周期(1998~2003年间.截至2003年12月31日止)研究了独立董事制度与我国上市公司业绩关联性问题,得出了我国独立董事制度与上市公司业绩存在较弱的关联性,独立董事制度的确对上市公司业绩产生了一定影响的结论。文章最后,分析了独立董事制度的某些不足并提出了某些对策和建议。 展开更多
关键词 独立董事制度 期间平均 上市公司业绩
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制造业上市公司营运资金管理与企业绩效关系的实证研究——以我国在巴基斯坦的制造业上市公司为例 被引量:2
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作者 费腾 《现代商业》 2014年第32期62-63,共2页
营运资本管理在制造业上市公司中发挥了重要作用。本文分析了我国在巴基斯坦的上市公司在1998年至2013年期间的营运资金管理与企业绩效关系的影响因素。利用平衡面板数据对204家在卡拉奇证交所上市的制造业公司进行调查,运用现金转换周... 营运资本管理在制造业上市公司中发挥了重要作用。本文分析了我国在巴基斯坦的上市公司在1998年至2013年期间的营运资金管理与企业绩效关系的影响因素。利用平衡面板数据对204家在卡拉奇证交所上市的制造业公司进行调查,运用现金转换周期,净贸易周期和库存周转率等指标在计量影响公司的绩效得出结论,对一般的制造企业来说,收集和付款政策、财务杠杆、销售增长和公司大小显著影响公司的盈利能力。我国在巴基斯坦的制造业上市公司运用了保守的营运资本管理政策和积极的收款和付款效率政策。此外,本文分析论证了高效的管理和营运资本融资(流动资产和流动负债)可以增加企业的营业利润率。并证明了为达到有效的营运资本管理,公司应该聘请金融领域的专家对制造业营运资本管理提出合理的建议。 展开更多
关键词 营运资金管理 现金转换周期 净贸易周期 平均收集期间 平均付款期间 固定效应模型
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对北约标准中可用度经验公式的研究
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作者 刘玉明 《船舶标准化工程师》 2012年第5期22-26,共5页
本文对《北约可靠性与维修性要求文件编写指南》(ARMP-4)中提出的"Effective Availability"及其计算的经验公式进行了分析研究。该指南指出"Effective Availability"是使用方用来确定系统和设备的可靠性与维修性指... 本文对《北约可靠性与维修性要求文件编写指南》(ARMP-4)中提出的"Effective Availability"及其计算的经验公式进行了分析研究。该指南指出"Effective Availability"是使用方用来确定系统和设备的可靠性与维修性指标要求的一个计算参数,而不是用于设计与验证系统和设备的可靠性与维修性指标。该经验公式要求系统和设备必须具有极高的任务可靠性(MTTCFnr),才能满足适度的可用度要求。我军装备当前无法单机实现这种极高的任务可靠性,故该公式并不是一个可以广泛应用的公式。 展开更多
关键词 任务期间实用可用度 任务期间平均实用修理时间 预防性维修任务停机时间 平均致命故障前时间
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Sirolimus,bevacizumab,5-Fluorouracil and irinotecan for advanced colorectal cancer:A pilot study 被引量:2
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作者 Francois Ghiringhelli Boris Guiu +1 位作者 Bruno Chauffert Sylvain Ladoire 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第34期4278-4283,共6页
AIM: To evaluate the efficacy and the safety of combined 5-Fluorouracil, irinotecan, bevacizumab and sirolimus in refractory advanced colorectal carcinoma. METHODS: We initiated a regimen with at day 1 an injection ... AIM: To evaluate the efficacy and the safety of combined 5-Fluorouracil, irinotecan, bevacizumab and sirolimus in refractory advanced colorectal carcinoma. METHODS: We initiated a regimen with at day 1 an injection (iv) of bevacizumab at 5 mg/kg, followed by 180 mg/m^2 irinotecan, followed by Leucovorin 400 mg/m^2, followed by a 5-Fluorouracil bolus 400 mg/m^2 and a 46-h infusion 2400 mg/m^2. Sirolimus was given orally as continuous administration of 2 mg twice a day every days. This treatment was repeated every 14 d. RESULTS: A total of 12 patients were enrolled. All patients presented with metastatic disease that had failed at least three lines of chemotherapy that contained oxaliplatin, irinotecan and bevacizumab. Cetuximab failure was also observed in all K-Ras wildtype patients. The median number of cycles was 8.5 (range 2-20) and clinical benefit was observed in eight patients. The median time to progression was 5 mo and the median survival was 8 too. Grade 3 neutropenia developed in four patients, and grade 3 diarrhea and stomatitis in two.CONCLUSION: The combination regimen of 5-Fluorouracil,irinotecan, bevacizumab and sirolimus in advanced colorectal carcinoma after failure of dassical be.absent is feasible and promising. Further evaluation of this combination is required. 展开更多
关键词 Colorectal cancer BEVACIZUMAB 5-FLUOROURACIL IRINOTECAN SIROLIMUS Antineoplastic combinedchemotherapy protocols ANGIOGENESIS
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结算风险的控制对策
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作者 贾创雄 《山西财税》 1998年第8期13-13,共1页
关键词 结算风险 应收帐款周转率 生产经营成果 财务风险 收帐政策 平均收帐期间 控制对策 筹资风险 可避免风险 总体状况
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浅谈决策分析中的机会成本
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作者 李增笑 曾凡德 《黑龙江财会》 1995年第1期20-21,共2页
浅谈决策分析中的机会成本李增笑,曾凡德机会成本是指在决策方案的分析比较中,由于选择了最优方案而放弃次优方案所丧失的潜在利益。简单地说,任何一项经济资源,如存在二种以上的用途,用于其中的一方面,就不能同时用于另一方面,... 浅谈决策分析中的机会成本李增笑,曾凡德机会成本是指在决策方案的分析比较中,由于选择了最优方案而放弃次优方案所丧失的潜在利益。简单地说,任何一项经济资源,如存在二种以上的用途,用于其中的一方面,就不能同时用于另一方面,这样,在评价前者的经济效果时,就应... 展开更多
关键词 决策分析 机会成本 内部转移价格 信用标准 半成品 平均收帐期间 增加投资 总成本 投资报酬率 单位变动成本
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Logarithmic Growth Algorithm of Sleep Mode of Broadband Mobile Access Terminal
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作者 唐朝伟 邵艳清 唐晖 《Transactions of Tianjin University》 EI CAS 2010年第6期452-456,共5页
The sleep mode which works upon low arrival traffic is introduced in IEEE802.16e standard to reduce the power consumption of the mobile access terminal. Due to the rapid growth in the sleep interval in the exponential... The sleep mode which works upon low arrival traffic is introduced in IEEE802.16e standard to reduce the power consumption of the mobile access terminal. Due to the rapid growth in the sleep interval in the exponential growth algorithm prescribed in IEEE802.16e, the power saving efficiency of the mobile access terminal is limited and the average delay time of receiving data frames is prolonged when the arrival rate of data frames is low. To obtain lower power consumption and shorter average delay time, the l... 展开更多
关键词 IEEE802.16E sleep mode mobile access terminal average power consumption average delay time logarithmic growth algorithm
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The analgesic effect of preoperative pregabalin in radical cystectomy for cancer bladder patients
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作者 Ayman A.Ghoneim Mohammed M.Hegazy 《The Chinese-German Journal of Clinical Oncology》 CAS 2013年第3期113-117,共5页
Objective:After the pregabalin has been approved for the treatment of neuropathic pain,preliminary clinical studies suggested a possible role in the perioperative period.To our knowledge,It has never been studied the ... Objective:After the pregabalin has been approved for the treatment of neuropathic pain,preliminary clinical studies suggested a possible role in the perioperative period.To our knowledge,It has never been studied the perioperative analgesic effect of pregabalin in patients with cancer bladder.In this study,we hypothesized that cancer bladder patients undergoing radical cystectomy and received oral pregabalin 75 mg twice daily for ten days preoperatively would get their postoperative pain reduced.Methods:Sixty patients scheduled for elective radical cystectomy were randomly assigned to one of 2 groups(control group or pregabalin group).Patients in the pregabalin group received 75 mg pregabalin twice daily for ten days before surgery.Standard anesthesia protocol was applied to all patients.Pain intensity,opioid consumption,level of sedation and other side effects were regularly assessed for 48h postoperative.Results:Mean time for the first request of analgesia was statistically longer in pregabalin group.Meanwhile,mean morphine consumption,VAS scores at rest(in the first 32h postoperatively),VAS scores during movement(in the first 20h postoperatively) were statistically significant lower in the pregabalin group than those in the control group.Patients in the pregabalin group were statistically more sedated in the first four hours postoperative than the control group.Conclusion:Preoperative pregabalin 75 mg twice daily for ten days resulted in 60% reduction in 24h postoperative morphine requirements in patients undergoing radical cystectomy. 展开更多
关键词 PREGABALIN LYRICA cancer bladder acute postoperative pain
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Comparison of two different kinds of regimens in treatment of advanced non-small cell lung cancer
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作者 Wenwu Wang Xuenong Ouyang 《The Chinese-German Journal of Clinical Oncology》 CAS 2011年第10期563-566,共4页
Objective: The aim of this study was to analyze and compare the recent efficacy and toxicity of a three-drug platinum-based regimen (A regimen): [cisplatin (DDP) + gemcitabine (GEM) + vinorelbine (NVB)] an... Objective: The aim of this study was to analyze and compare the recent efficacy and toxicity of a three-drug platinum-based regimen (A regimen): [cisplatin (DDP) + gemcitabine (GEM) + vinorelbine (NVB)] and a two-drug combination without a platinum drug (B regimen): GEM + NVB, which were used to treat 55 advanced non-small cell lung cancer (NSCLC) patients, in a bid to provide a guidance for clinical treatment. Methods: Twenty-four cases of advanced NSCLC (stage Ill-IV) patients were treated with A regimen (DDP 35 mg/m^2 d1-3; GEM 1250 mg/m^2 d1, 8 ). The other 31 cases were treated with B (GEM 1250 mg/m^2 d1,8; NVB 25 mg/m^2 d1, 8 ). Repeat every 3 weeks for 6 courses. Results: In A regimen group, the overall response rate was 45.8% (CR + PR = 11), median response time was 5.5 months, median survival time was 11 months and 1-year survival rate was 41.7%. In B regimen group, the overall response rate was 48.4% (CR + PR = 15) and median response time, survival time and 1-year survival rate were respectively 6.5 and 10 months and 41.9%. The major toxicities were nausea/vomiting, myelosuppression in A regimen group, myelosuppression and phlebitis in B regimen group, respectively. Conclusion: A regimen and B regimen for advanced NSCLC have similar response rate (P 〉 0.05). B regimen, a two-drug combination without a platinum drug is of less toxicity and more safety than A regimen, a three-drug platinum-based regimen and is recommended to be a regimen in the first-line treatment for advanced NSCLC. 展开更多
关键词 non-small cell lung cancer (NSCLC) gemcitabine (GEM) vinorelbine (NVB) cisplatin (DDP) combined chemotherapy
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Analysis of misdiagnosis in patients with multiple trauma 被引量:5
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作者 YANG Fan BAI Xiang-jun LI Zhan-fei 《Chinese Journal of Traumatology》 CAS 2011年第1期20-24,共5页
Objective: To explore the features, treatment outcomes and reasons for misdiagnosis in patients with multiple trauma, so as to decrease the incidence of misdiagnosis.Methods: A total of 3 163 patients with multiple ... Objective: To explore the features, treatment outcomes and reasons for misdiagnosis in patients with multiple trauma, so as to decrease the incidence of misdiagnosis.Methods: A total of 3 163 patients with multiple trauma who were admitted in our department from August 1997 to August 2008, were retrospectively studied to compare the features of diagnosis and treatment. There were 2 117 males (66.93%) and 1 046 females (33.07%) with the mean age of 36.46 years (range, 14-80 years). Parameters such as general status, traumatic condition, diagnosis and treatment situation, prognosis and mortality were analyzed. The differences between misdiagnosis group and correct diagnosis group were compared in terms of severity of injury, complications and treatment outcomes to elucidate the cause and prevention of misdiagnosis.Results: The misdiagnosis rate of multiple trauma in this study was 16.19%. The major anatomic sites misdiagnosed were limbs and pelvis (299 positions, 39.50%), abdominal region and pelvic organ (148 positions, 19.55%),and thoracic region (109 positions, 14.40%). In misdiagnosis group, ISS, length of hospital stay, rates of disturbance of consciousness, critical cases and shock cases were 33.78± 19.64, (23.59±7.26) days, 49.22%, 33.01% and 47.46%,respectively, which were significantly higher than those of the correct diagnosis group (P〈0.01). And the data showed that the more serious the injury was, the higher the rate of misdiagnosis would be. The rate of primary diagnosis by trauma surgeons in correct diagnosis group was 75.78%, significantly higher than that of the misdiagnosis group ( x2=382.01,P〈0.01). The mortality rate of the mi sdiagnosis group was 2.93%, which was significantly higher than that for all patients ( x2=5.22, P〈0.05).Conclusions: The results indicated that patients with severe multiple trauma are at high risk of misdiagnosis in early treatment. The mortality rate of misdiagnosed patients is higher than the correctly-diagnosed patients. To prevent misdiagnosis, physicians need to take great care to conduct thorough clinical examinations and repeated evaluation. 展开更多
关键词 Delayed diagnosis Diagnostic errors Multiple trauma Prevention and control Treatment outcome
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Seat belt use during pregnancy in Iran: attitudes and practices
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作者 Mojgan Karbakhsh Zahra Ershadi +1 位作者 AliKhaji FatemehRahimi-Sharblaf 《Chinese Journal of Traumatology》 CAS 2010年第5期275-278,共4页
Objective: Seat belt use during pregnancy reduces injury to the mother and her fetus. During recent years, the use of seat belts has been mandated by law in Iran. The purpose of this study was to determine the attitu... Objective: Seat belt use during pregnancy reduces injury to the mother and her fetus. During recent years, the use of seat belts has been mandated by law in Iran. The purpose of this study was to determine the attitudes and practices of pregnant women regarding seat belt use. Methods: In this cross-sectional study, we asked 335 pregnant women at a hospital-based prenatal care clinic on the use of safety belt before and during pregnancy. SPSS version 13.0 was used for data analysis. Results: The mean age of study subjects was 27.3 years±5.3 years with the median of 27 years. Compared with the seat belt use before pregnancy, no change was detectedin 48.7% of the women; seat belt use had increased in 17.5 % of them and decreased in 33.8 %. Eighty-one percent of women knew the correct placing &both lap belt and shoulder belt. Only 4% of women had received education on proper restraint use during pregnancy. Conclusions: The prevalence of seat belt use during pregnancy is lower than reports which are mostly from developed nations. The fact that about one-third of women have decreased their seat belt usage during pregnancy highlights the importance of education of mothers on this topic. 展开更多
关键词 Seat belts PREGNANCY Accident traffic SAFETY
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Daily shoaling patterns in the zebrafish Danio rerio
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作者 Timothy PACIOREK Scott McROBERT 《Current Zoology》 SCIE CAS CSCD 2013年第6期754-760,共7页
Shoaling intensity in zebrafish Danio rerio is believed to vary throughout subjective day and night hours. This experiment examines long term variations in shoaling behavior. Adult zebrafish Dan io rerio were maintain... Shoaling intensity in zebrafish Danio rerio is believed to vary throughout subjective day and night hours. This experiment examines long term variations in shoaling behavior. Adult zebrafish Dan io rerio were maintained under a 12:12 LD cycle (with dim red light serving as reduced visibility during subjective dark hours), and their shoaling behavior was monitored every hour for a three-day period of time. Our results show that zebrafish perform shoaling behavior throughout subjective day and under reduced visibility conditions, although mean shoaling times during the light phase were significantly higher than mean shoaling times during the dark phase. However, on the 3^rd day of the experiment, mean shoaling times during the subjective night had increased and mean shoaling times during the subjective day had decreased. This shift in intensity was not seen on the first two days of the study, and may represent the influence of experience on the behavior of the test fish. We believe this study shows that shoaling behavior changes with light/dark cycles and that fish shoal even during reduced visibility conditions. 展开更多
关键词 Shoaling behavior ZEBRAFISH Danio rerio VARIATION
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