明矾石精矿焙烧脱水机理研究

以明矾石精矿为原料,通过热重-差热分析和热力学分析,表明明矾石在807 K左右开始分解脱水,焙烧脱水前后样品的XRD、SEM图谱分析表明,焙烧脱水后,明矾石的晶体结构遭到破坏,明矾石矿物发生分解,生成了硫酸铝钾和氧化铝。通过非等温热重法研究了脱水过程的动力学参数：表观活化能E≈270 kJ/moL。通过实验研究,确定了明矾石脱水工艺参数,在温度873 K,焙烧时间7 min,明矾石精矿的失重率达10%,达到明矾石精矿失去结构水的理论失重率。     

New services margin/high success discriminators

The present range of services, particularly financial, is subject to high privatisation and competition. Anticipating the future return of new projects is a critical challenge that confronts marketing managers at present. However, the transfer of success models from new products to services has not allowed a global vision of the internal and external environment that best set up the success of new services. Using a sample of 120 new Portuguese financial services (67 successful/57 failures), this study examines the relationships foreseen by a global model of success determinants of new services, i.e., formulates and tests hypotheses relative to the differentiated impact of the strategic and environmental factors on the multiple return indicators. The results of a binary logistic regression analysis suggest that a group of factors that best discriminate between new services of average and high return, through its different indicators that distinguishes the factors, is slightly different and less than one that distinguishes between successful and failed innovations.     

Innovation in services – how different from manufacturing?

Using standardised firm data a comparative analysis of the determinants of product and process innovation in manufacturing and services is performed. Results show that in services there are significant differences in innovation behaviour, in terms of intramural and extramural R&D. It is also found that size matters less in services than in manufacturing. Although youth has a positive effect in both cases, young service firms are more likely than young manufacturing of being pioneer innovators. The results reveal the importance of learning by doing in service process innovations, as young service firms are less likely to introduce process innovations.     

How Latin American Students Perceive American Advertising

The study reported here was designed to examine the attitudes of Latin American students toward American advertising. The attitudes of 188 Latin American students were investigated, and comparisons were made with a matched sample of 193 American students. The results showed that the Latin American students' attitudes toward advertising were different from those of their American counterparts. Latin American students were more likely to have stronger attitudes, both favorable and unfavorable, toward specific social and economic dimensions of advertising. Attitudes expressed by Latin American students were not related to their length of stay in the United States.     

The influence of strategic patterns of internationalization on the accuracy and bias of earnings forecasts by financial analysts

This paper examines how financial analysts’ earnings per share forecasts are affected by strategic patterns that multinational firms have used to expand abroad. Prior empirical studies have examined a firm's internationalization level as a one-dimensional construct involving increased task complexity for financial analysts’ forecasting and therefore resulting in lower accuracy and greater optimistic bias in earnings forecasts. In contrast, we use two strategic patterns of internationalization associated with geographic dispersion and cross-border integration to characterize a firm's international strategy, and find different empirical results using a sample of U.S. public companies with domestic and international operations. The empirical evidence suggests that geographic dispersion contributes to increases in forecasting accuracy and decreases in optimistic bias. Further, the results support that cross-border integration leads to decreases in forecasting accuracy. The two strategic patterns of internationalization are a consequence of managerial choices and therefore these results are important for managers, investors and shareholders as they help explain the linkages between international strategies and earnings forecasts by financial analysts.     

Consumer involvement and acceptance of biotechnology in the European Union: a specific focus on Spain and the UK

Biotechnology stands out as a clear‐cut example of an industry where legislation on new technologies has been shown to be linked with public attitudes. Indeed, consumer consultation has played a leading role in the acceptance of genetically modified (GM) food as well as in government policy and legislation. This paper examines the issue of consumer consultation by analysing how public opinion has conditioned the acceptance of GM food in the European Union in general and specifically in Spain and the UK. We draw upon the evidence of two Eurobarometer surveys (46.1 and 52.1) to argue that consumer decision making on new technologies is an information‐dependent factor explaining consumer rejection to non‐transparent introduction of GM food. Individuals feel ill‐prepared to make decisions and rely on trusted information advisors such as consumer organizations. Findings suggest significant information dependency as well as widespread heterogeneity in attitudes towards the applications of biotechnology. Finally, the role played by information channels indicates that consumer participation should precede the adoption of communication policies, as they might need to adapt to the specific cultural characteristics of each country.     

Stakeholder involvement in strategic HRD aligning: the impact on HRD effectiveness

The study reported here focusses on the question to what extent stakeholder involvement in HRD policymaking (here referred to as strategic HRD aligning) predicts effective HRD programmes. The study involved 44 large companies in the industrial, financial and commercial services sectors. The findings indicate that involvement of stakeholders in the strategic HRD aligning process, and their opinions on the quality of this aligning process in particular, have a positive effect on perceived HRD effectiveness. The perceived effectiveness is even more positive when the mean company score on the quality of strategic aligning is higher.     

Do innovation spillovers impact employment and skill upgrading?

So far, the research on impact of innovation on employment and skills focused on effects within firms and sectors. Little attention was paid to the influence of interlinkages between sectors as a source of employment change. The main contribution of this paper to the field refers to broadening the analysis of innovation impacts to innovation spillovers from vertically linked sectors on firms' employment and skill change in user industries. The empirical analysis conclusively demonstrates an important role of innovation spillovers in the economy. Firms' employment growth is shown to benefit significantly from spillovers of product innovations in manufacturing and knowledge-intensive services. Similarly, firms that are subject to increased spillovers of product innovations as well as marketing and organisational innovations are more likely to upgrade their skill composition. Conversely, employment growth and skill composition of firms seem to be negatively affected by spillovers of process innovations in vertically linked sectors.