Understanding cooling towers: The route to energy savings

Why do we use cooling towers? The answer is simple. Cooling towers allow us to efficiently reject heat to the atmosphere at a lower temperature than other available processes. The key words in that last sentence are “at a lower temperature”.     

On Explaining Individual and Corporate Culpability in the Global Climate Change Era

Humans are causing global climate change (GCC), and such climate change causes harms. Robin Attfield explained how individuals should be understood to be culpable for these harms. In this paper, I use a critical analysis of Attfield’s explanatory framework to explore further difficulties in accounting for corporate responsibility for these harms. I begin by arguing that there are some problems with his framework as it is applied to individuals that emit greenhouse gases (GHGs). I then show that it will be very difficult to extend this framework to corporations. This is not a criticism of Attfield’s work (as he does not discuss corporate responsibility for those harms associated with GCC), but it will serve to show the difficulty in philosophically explaining corporations’ moral culpability when it comes to these harms. In fact, one positive conclusion of this paper is that it highlights a new area of concern that has been ignored in discussions of corporate responsibilities—that of mediated responsibilities—which is how Attfield understands our responsibilities regarding GCC. The discussion of this concern will draw attention to another positive conclusion of this paper: the harms associated with CO₂ are very unlike the harms associated with other airborne-emitted substances, which will indicate that we will need new ways of understanding how individuals and corporations are philosophically responsible for these harms. The final positive conclusion of this paper will be a discussion of what the constraints should be on new approaches to explaining our culpability.     

Using Laboratory Experiments in Logistics and Supply Chain Research

Laboratory experiments provide an underutilized methodology for subjecting research in logistics and supply chain management to rigorous scientific scrutiny. As discussed in this paper, by following established procedures researchers can create an economic system in which behavior can be observed and replicated. With the ability to control the institution and the environment, researchers have complete information and can exogenously manipulate treatment variables, neither of which may be feasible in field work. We also address many of the reservations that skeptics of laboratory experiments often express including issues of realism, participant sophistication, and payoff stakes. We then provide several examples where experiments have been used to study issues relevant to logistics and supply chain management including auctions, wholesale practices in gasoline markets, inventory replenishment, liberalization of the electric power industry, and deregulation of the natural gas markets. Finally, we identify several additional areas where laboratory experiments could be informative.     

The Future of Privacy: A Consumer‐Oriented Approach to Managing Personal Data Online

Beginning with Facebook's recent controversial “tweaks” to its privacy policy and its promise to support users against employers and others who attempt to compel users to divulge passwords, we critically review European Union (EU) and US digital privacy initiatives. Whereas the EU proposal relies on legislative regulation, the United States proposes industry self‐regulation partially enforceable by the Federal Trade Commission (FTC). We conclude that not only do the sharply differing EU and US approaches present significant problems of global digital interoperability, but neither proposal promises to result in practical and feasible consumer protection, at least not in the near term. Moreover, the EU proposal poses serious threats to the profitability of digital commerce. As an alternative, we propose a “third approach,” empowering the individual digital consumer/user through a personal online strategy we call “wide‐open privacy,” which provides security without sacrificing the transformative economic, cultural, and personal benefits of the Internet. © 2013 Wiley Periodicals, Inc.     

Poverty and unemployment: A cultural approach

For years, policymakers, business leaders, human resources professionals, and economists have attempted to explain the existence of unemployment. Unemployment inhibits the economic growth of a nation and contributes to the problem of ongoing poverty, which cannot be lessened without that growth. Understanding the causes of unemployment and developing policies and programs to decrease it are vitally important for nations around the world, but one key variable in the study of unemployment has been overlooked. That variable is culture. This article will show that culture can significantly explain cross‐national differences in unemployment rates and offers a link to understanding the global problem of poverty that plagues nations today. © 2012 Wiley Periodicals, Inc.     

Services Offshoring and its Impact on Productivity and Employment: Evidence from Germany, 1995–2006

Economists have recently recognised services offshoring as an important influence on domestic labour market outcomes. Services are of particular interest since their significance has grown in terms of both quantity and quality. Only one and a half decades ago, most services were considered non‐tradable, but the emergence and development of new information and communication technologies has made many services internationally tradable. The liberalisation of international trade in services trade has further accelerated the volume of services trade. Our econometric estimations focus on services offshoring by German manufacturing sectors. We use revised input–output data from 1995 to 2006. We first estimate the impact of services offshoring on labour productivity. We then measure the effects of services offshoring on labour demand. The results show that services offshoring increased sectoral labour productivity, but reduced German manufacturing employment. The overall results suggest that labour demand decreased over 1995–2006, because labour‐reducing productivity and substitution effects dominated labour‐augmenting scale effects from services offshoring.     

Processing and Retrieval of Inferences and Descriptive Advertising Information: The Effects of Message Elaboration

Abstract

Two issues make advertising effectiveness difficult to assess: (1) advertising effects occur both during ad processing and when ad information is retrieved, and (2) the information that consumers derive from advertisements is likely to be some combination of explicit information and inferences. The study reported in this paper addresses these issues, examining the effects of encoding and time delay on advertising processing. Results indicate that while some types of inferences (product features) are more likely to be made under strong than weak encoding conditions, other types of inferences (consumption situation) are not affected by encoding. In addition, at the time of a decision (after a time delay), memory information use depends both upon individual brand accessibility and the relative accessibility of alternative brands in the memory set. Implications for both advertising researchers and managers are offered.     

The Exploitation of Inside Information at the Wall Street Journal: A Test of Strong Form Efficiency

The study examines if tradings on stocks based on the inside information about the “Heard on the Street” column of the Wall Street Journal could generate abnormal returns. We found significant abnormal returns on days t =?1 and t= 0 (publication date) for the stocks related to insider trading. For a comparable control group of noninsider traded stocks, the abnormal returns were not significant on day t=?1 but were significant on day t= 0. The abnormal returns for the insider trade group on days t=?1 and t= 0 were greater than the returns for the control group. The results indicate that the inside information was the cause for the differences.     

Taxpayer resistance,guarantee uncertainty,and housing finance subsidies

In the absence of external guarantees, a private firm's debt trades in the market at rates reflective of its private default risk. Not all firms go it alone, however. There are entities, government-sponsored enterprises (GSEs), whose debt obligations enjoy federal guarantees. Federal guarantees affect housing finance indirectly in that they tend to enhance the creditworthiness of the debt obligations of the housing intermediary which lessens the debtholder's exposure to default. The market investor then becomes a willing buyer of GSE debt at a lower (subsidized) rate as a result of the government guarantee.Due to the fact that the subsidy rests on the presumption that the GSE debt will be bailed out by the government it can be seen that the subsidy in turn rests upon the presumption by the GSE debtholder that the taxpayers will honor the guarantee in the event of a GSE default. Hence, government subsidies to the housing intermediaries rest not on ongoing government outlays but rather on the confidence that the taxpayers will be willing, if called upon, to cover GSE losses, i.e., the confidence of a bailout.This article analyzes the effects on the GSE subsidy and on the taxpayer, if the debt markets charge for bailout risk. Bailout risk pricing is an economic event. When debtholders seek to protect themselves by pricing for bailout risk, this increases GSE borrowing costs and cuts into both GSE borrowers' subsidies and stockholder earnings. Higher borrowing costs leave the GSE in a weakened condition and increase the ex ante bailout cost to the taxpayer. When bailout risk premiums become priced by the market, it substantially lessens the government's ability to subsidize housing finance or other GSE activities.     

可修复单元备件储备量计算方法研究

本文讨论了考虑原件修复时,可修复单元备件储备量的计算方法,并给出了该方法在印制电路板备件储备量计算中的应用实例。