我国国有部门与非国有部门工资决定机制差异的实证研究

本文利用微观调查数据对我国国有部门与非国有部门工资决定机制的差异进行了实证研究。研究发现,在市场化改革过程中,不论是机关事业单位还是国有企业,其人力资本的收益率不断提高,这表明人力资本的报酬机制在国有部门的工资决定中得到了强化。但是与非国有部门工资决定模式相比较,国有部门的工资决定依然带有较强的制度化特征。进一步对工资差异进行的布兰德-瓦哈卡(Blinder-Oaxaca)分解表明,国有部门与非国有部门之间长期存在一定程度的工资溢价。溢价的存在意味着工资对劳动生产率(或者说人力资本水平)的偏离,同时也意味着同质劳动在两个部门得到不同的报酬,即"同工不同酬"。这种现象的存在必然会降低劳动力市场的效率,同时也会带来资源的浪费。     

基于飞机使用可用度的航材二级库存优化配置

从飞机使用可用度与航材库存量的关系入手，阐述库存对保障飞机使用可用度的重要作用。建立基于飞机使用可用度的航材二级库存配置模型，并利用边际分析法进行求解，针对目前备件短缺的普遍状况，对有限航材实现科学配置，算例证明该配置方法可行。     

Managing and operating the reserve market as one insurance system

In this paper, it is suggested that the preference of an individual consumer for its power supply reliability should be considered when scheduling the system reserve. The mechanism of ‘provider insurance’ is introduced and the reserve market is to be managed as an insurance system. In our modeling, the generator who provides the insurance of reliable power supply via its reserve, should always collect the payment (the premium), and be rewarded with the spot market price for its called reserve. The consumer who buys the insurance, pays premium and thus obtains a reliable power supply (the claim). It is argued that such a market mechanism will result in the maximum social welfare. Moreover, it is shown that there is a kind of ‘moral hazard in reverse’ fact that will further improve the market efficiency. Later on, discussions on implementing the proposed method are given, and an illustrative example is provided to show basic features of the proposed method.     

宝钢特殊螺纹接头螺纹加工刀具的设计

刀具研制是宝钢特殊螺纹油管接头开发工作的重要环节之一，基于与现有刀具系统通知,主研制了新型结构的螺纹切削加工刀具；同时探讨了刀具的齿形设计、内冷却嘴技术。     

基于ARIMA模型自动预测我国保险行业保费收入的应用和实践

本文采用ARJMA模型以我国财产险的保费收入的预测为例,对数据预处理、模型的选择、识别、估计、检验等过程进行了详细的分析,得出了预测结果报告,并描述了对我国产寿险的保费收入实现自动预测并得到结果报表的思路和方法。     

Premium honeys: Response of sensory panelists

Four honeys and one synthetic ‘honey’ were ranked by 62 panelists for relative acceptability; willingness to buy was ranked after price information was provided. Data were analyzed with the R-index procedure and Friedman ranked sums test. Honey floral source and production location differed. Panelists completed a questionnaire concerning food selection and perception and selection of honey. Instrumental techniques were used to characterize the honeys.

Honey was perceived by these panelists to have a unique flavor and positive image. Alaska wildflower, a fireweed table honey and Alaska fireweed/clover were the most acceptable. Acceptability did not necessarily correspond to willingness to buy. Similar results were obtained from both the R-index and rank sums analyses. The instrumental assessment of color and acceptability were significantly correlated. Generally, characteristics that distinguish premium from table honeys were unimportant in the selection process used by these panelists.     

计算机仿真和全尺寸实物试验在特殊螺纹接头油套管研究开发中的应用

特殊螺纹接头油套管应用在深井、超深井、高压气井和热采井等油田采油工况.在研究开发中,产品结构和使用性能是两个重要的指标.本文介绍了应用计算机仿真和全尺寸实物试验进行特殊螺纹接头油套管研究开发的方法.在计算机仿真方面,通过模拟不同工况,对特殊螺纹接头的密封面进行了结构优化,减少了样品加工和试验的数量,降低了开发费用;在全尺寸实物试验方面,模拟油田的实际工作情况,掌握了产品的性能,提出了合理的上扣扭矩.两者的结合使开发出的产品在上扣、结构和密封等的完整性方面,完全满足油田用户要求.     

Trademarks and the patent premium value: Evidence from medical and cosmetic products

The determinants of the premium value of patents for medical and cosmetic products are analyzed with respect to a complementary IP strategy such as trademarks. I discuss a novel method and database to gauge combinations of patent and trademark pairs regarding the same innovative project. The premium value is computed through a model of renewal decisions for the patent cohorts 1985–1990 that have been designated in the U.K. and Germany. After taking into the account several firm characteristics and patent indicators typically used in the literature, I find ample evidences that patent and trademark pairs are featured by higher valuations.     

Drip loss of case-ready meat and of premium cuts and their associations with earlier measured sample drip loss, meat quality and carcass traits in pigs

Drip loss of 374 samples taken from porcine M. longissimus dorsi and M. semimembranosus was measured by using the “bag method” (BM), EZ-DripLoss (EZ-DL) from premium cuts (PC) and in retail tray (case-ready meat; CRM). This provided a comparison between these methods and their relationships to other meat quality and carcass traits. Samples were prepared at 24 h post-mortem (pm) and were measured 24 and 48 h after preparation (at 48 and 72 h pm) using the BM and after 48 h (at 72 h pm) with the EZ-DL and PC. Drip loss of meat kept in retail trays was measured after 7 days (CRM₇) and daily within a week (CRM_1–7). Average drip loss was 1.80% and 3.10% using the BM after 24 and 48 h, respectively. EZ-DL and CRM₇ showed higher drip losses of 4.71% and 4.00%. Daily loss of CRM_1–7 showed a concavely shaped curve and increased from 1.57% to 5.64% after 7 days. High correlations were obtained between drip loss of CRM₇ and BM (r = 0.88) or the EZ-DL (r = 0.91). The development of drip loss in case-ready meat fitted by linear-quadratic regression (y = 0.439 + 1.245x − 0.072x²) showed that high drip loss measured earlier by bag and EZ-DripLoss methods was highly associated with a high intercept (r = 0.63–0.72), a high linear increase (r = 0.77–0.81), but larger decrease in increments (r = −0.82 to −0.86) during weekly stored meat in retail trays as supplied at consumer level. Because the positive linear regression coefficient was substantially higher than the negative quadratic regression coefficient, the development of drip loss is mainly dependent on the initial drip loss. Therefore, animals with high drip loss within 72 h post-mortem also showed undesirable high drip loss curves over the entire retail period. Relationships between drip loss and other meat quality traits were similar for BM, EZ-DL and CRM₇. Of these the correlation between pH₂₄ and drip loss was highest with r = −0.54, −0.49 and −0.47 for BM, EZ-DL and CRMH₇, respectively. Interestingly, a correlation of r = −0.35 between blood pH value and CRML₇ was obtained. Carcass traits such as loin, ham, shoulder, belly weight or loin eye area showed only marginal correlations to drip loss. In conclusion, EZ-DL was the most appropriate method to predict drip loss of case-ready meat in retail trays and its development during a 7 day storage period.     

CAN总线在废水处理中的应用

介绍在钢厂废水处理站中Premium PLC与现场ATV31变频器通过CAN总线通讯,以实现设备的远程控制,此种通讯方式具有成本低、传榆距离远、可靠性高的特点。