DPR Debate: Growth Identification and Facilitation: The Role of the State in the Dynamics of Structural Change

This DPR Debate is based on the contribution by Justin Lin, Chief Economist at the World Bank, and his colleague Célestin Monga, on ‘Growth Identification and Facilitation: The Role of the State in the Dynamics of Structural Change’. The article under consideration is important and timely as it articulates a number of new policy implications from Justin Lin's earlier work on New Structural Economics, which was discussed in a previous DPR debate (Lin and Chang, 2009). This symposium contains the article and comments on it from five distinguished specialists, and closes with a rejoinder by Lin and Monga. This introduction discusses the article, the comments and the rejoinder. The historical record indicates that, in all successful economies, the state has always played an important role in facilitating structural change and helping the private sector sustain it across time. This article puts forward a new approach to help policy‐makers in developing countries identify those industries that may hold latent comparative advantage, and recommends ways of removing binding constraints to facilitate private firms' entry into those industries. Two types of government interventions are distinguished: first, policies that facilitate structural change by overcoming information, co‐ordination and externality issues, which are intrinsic to industrial upgrading and diversification; and second, policies aimed at protecting certain selected firms and industries that defy the comparative advantage determined by the existing endowment structure.     

Scheduling of raw-material unloading from ships at a steelworks

Formulating a schedule for unloading raw material from ships at the seaport of a steelworks is a difficult task. Even in its simplest possible form, finding an optimum solution for the problem is nondeterministic polynomial time (NP)-hard. The problem at a steelworks gets more complicated due to several factors, such as the difference in capacities of unloading equipment, the requirement of keeping ships balanced and the dynamic nature of berthing eligibility of each ship, as governed by the weight of the remaining payload. Moreover, the raw material must be transported through a network of belt conveyor units to designated storage yards while being discharged from ships. The combinatorial nature of this belt conveyor operation is analysed in this article. A heuristic approach to the raw-material unloading problem is proposed and its effectiveness was tested with real-world examples.     

Interprofessional collaboration between social workers and school counsellors in tackling youth at-risk behaviour

In Singapore, although youths are engaged in school, at-risk behaviours still prevail. This study discovers the experiences of collaboration between social workers and school counsellors when working together to tackle the multi-dimensional problems that youths face. It is posited that the collaborative processes have strengthened as seen in the role clarity, flexibility and tight communicative processes amongst professionals. There are also issues of concerns raised, such as confidentiality and clashes in agenda. These are discussed in light of the processes and orientations that influenced professionals in their practise. Last, relevant recommendations are given to develop collaborative work.     

The Effects of Blog-Mediated Public Relations (BMPR) on Relational Trust

Key features of blog-mediated public relations are conducive to initiating and nurturing relationships with publics. As a result, blogs have emerged as a new venue for public relations in recent years. Many public relations practitioners have come to realize that blogging is not just a fad and have recognized a growing trend of blogging adoption in the industry—suggesting a need for common principles of successful public relations blogging practices. This study selected the following critical features of effective blog-mediated public relations: salience of narrative structure, dialogical self, blogger credibility, and interactivity. Using these concepts, the researchers proposed a theoretical model in explaining relational trust as a central outcome of effective blog-mediated public relations. Findings showed that dialogical self in blog posts enhanced interactivity, which, in turn, led to an increase in relational trust. Additionally, this study found that blogger credibility played a positive role in relational trust.     

E-learning methodologies in practice: similarities and differences between North American countries and New Zealand

In this cross-national qualitative study, tertiary instructors from North America (Canada and the USA) and New Zealand were asked to share their perceptions regarding effective e-learning methodologies. The purpose of the research was to identify what similarities and differences in perceptions existed, and what implications, if any, such similarities and differences would have for the development of national and tertiary digital strategies for New Zealand. A comparison of the responses to four primary research questions indicated that while both similarities and differences in perception do exist, the similarities far outweigh the differences.     

South Korean women leaders’ struggles for a work and family balance

The purpose of this study was to explore the lived experience of women in leadership in Korea and to identify challenges and opportunities that they face in the process of balancing work and family life and developing leadership as women in the uniquely challenging Korean workplace where they face organizational and cultural constraints. Critical to this investigation was the understanding of concepts frequently represented in the previous literature about women in leadership: work–family life balance, women’s leadership development, and the cultural context. In-depth interviews were conducted with 18 women leaders selected through a purposeful and snowball sampling method. A thematic analysis of the interview data generated six themes including: (a) commitment to work, (b) struggles for a balance, (c) defining success, (d) gender identity, (e) being a role model, and (f) need for support. Based on the findings, we provide implications for research and practice.     

A note on the optimal number of centre runs in a second phase design of response surface methods

In searching for optimum conditions, the response surface methods comprise two phases. In the first phase, the method of the steepest ascent with a 2 k-p design is used in searching for a region of improved response. The curvature of the response surface is checked in the second phase. For testing the evidence of curvature, a reasonable design is a 2 k-p fractional factorial design augmented by centre runs. Using c-optimality criterion, the optimal number of centre runs is investigated. Incorporating c-efficiencies for the curvature test with D-efficiencies and G-efficiencies of CCDs for the quadratic response surfaces and then, adopting the Mini-Max principle, i.e. maximizing the worst efficiency, we propose robust centre runs with respect to the three optimality criteria to be chosen.     

Does it matter who answers the race question? Racial classification and income inequality in Brazil

Previous studies ofracial inequality have relied on official statistics that presumably use self-classification of race. Using novel data from a 1995 national survey in Brazil, we find that the estimates of racial income inequality based on self-classification are lower than those based on interviewer classification. After human capital and labor market controls, whites earn 26% more than browns with interviewer classification but earn only 17% more than browns with self-classification. Black-brown differences hardly change: Blacks earn 13% and 12% less than browns with interviewer classification and self-classification, respectively. We contend that interviewer classification of race is more appropriate because analysts of racial inequality are interested in the effects of racial discrimination, which depends on how others classify one's race.     

Cross‐Cultural Consistency of the Demand/Withdraw Interaction Pattern in Couples

In order to examine the cross‐cultural consistency of several patterns of couple communication, 363 participants from four different countries (Brazil, Italy, Taiwan, and the United States) completed self‐report measures about communication and satisfaction in their romantic relationships. Across countries, constructive communication was positively associated with relationship satisfaction, whereas demand/withdraw communication was negatively associated with relationship satisfaction. Woman demand/man withdraw communication was significantly more likely than man demand/woman withdraw communication. Also, some evidence suggested women wanted greater closeness versus independence in their relationships than did men. Differences between partners in desire for closeness versus independence were associated with greater demand/withdraw communication. The possible bases for the demand/withdraw pattern of communication and its gender linkage are discussed.     

Optimal stopping for Brownian motion with applications to sequential analysis and option pricing

Herman Chernoff made fundamental contributions to analytical and computational methods for solving optimal stopping problems for Brownian motion. He also showed how these optimal stopping problems are closely related to some basic problems in sequential analysis and singular stochastic control. This paper gives a survey of these and related developments and describes some recent applications to option valuation in financial economics.