Miracle-dz/UniFAR-FTUs huggingface dataset:
Offshoring and the Skill‐Premium: Evidence from Individual Workers’ Data

During the 1980s the United States has experienced an increase in both international trade and the skill‐premium. The association between these two phenomena has proven elusive in the early empirical literature on the subject. Indeed, the consensus among labour economists seems to be that trade has not been the main cause of such increase in the skill‐premium. This view has been challenged by Feenstra and Hanson (1999, Quarterly Journal of Economics, 114, 3, 907) who find that offshoring sizably affects the skill‐premium. I revisit this debate using individual workers’ data from the March Current Population Survey combined with industry‐level trade data. This strategy improves upon the work of Feenstra and Hanson who do not control for the demographic characteristics of the labour force. In my results, offshoring can explain between 9 and 30 per cent of the increase in the college wage premium, relative to high‐school workers. In addition, I find that offshoring can explain 21 per cent of the increase in the relative employment of skilled labour. These results suggest that offshoring may play an important role in the increase in the relative demand of skilled workers.
Competing through operations and supply: The role of classic and extended resource‐based advantage

Purpose – The paper seeks to analyze the evolution of competitive advantage using both “classic” and “extended” resource‐based theory (RBT). The aim is to examine the different ways in which “classic” and “extended” resource‐based advantage develops and how they might combine to create long‐term advantage.Design/methodology/approach – A single case study method is used to examine the process by which competitive advantage has accumulated over a 50‐year period at Food Services Group Inc., a highly successful food service company based on the West Coast of the USA with an annual growth rate currently running at 10 percent.Findings – Preliminary conclusions suggest support for the sequential, iterative, and slow‐cycle development model associated with proprietary bounded resources and, the strategic resource‐rigidity paradox. The work also highlights preliminary evidence for a faster cycle development process possible with inter‐firm resources associated with extended resource‐based theory (ERBT) and, long‐r.
Consumer Willingness to Pay for “Second-Generation” Genetically Engineered Products and the Role of Marketing Information

Environmental and consumer groups have called for mandatory labeling of genetically engineered (GE) food products in the United States, stating that consumers have the “right to know. ” Herein, we use a nonhypothetical field experiment to examine the willingness to pay for GE-labeled products, using the only second-generation GE product currently on the U.S. market—GE cigarettes. Our results suggest consumers pay less for GE-labeled cigarettes when marketing information is absent. But, when presented with marketing information on the attributes of the cigarette, we find no evidence that consumers pay less for GE-labeled cigarettes.
Cloning and expression analysis in mature individuals of two chicken type-II GnRH (cGnRH-II) genes in common carp (Cyprinus carpio)

Gonadotropin-releasing hormone (GnRH) is a conservative neurodecapeptide family, which plays a crucial role in regulating the gonad development and in controlling the final sexual maturation in vertebrate. Two differing cGnRH-II cDNAs of common carp, namely cGnRH-II cDNA1 and cDNA2, were firstly cloned from the brain by rapid amplification of cDNA end (RACE) and reverse transcriptionpolymerase chain reaction (RT-PCR). The length of cGnRH-II cDNA1 and cDNA2 was 622 and 578 base pairs (bp), respectively. The cGnRH-II precursors encoded by two cDNAs consisted of 86 amino acids, including a signal peptide, cGnRH-II decapeptide and a GnRH-associated peptide (GAP) linked by a Gly-Lys-Arg proteolytic site. The results of intron trapping and Southern blot showed that two differing cGnRH-II genes in common carp genome were further identified, and that two genes might exist as a single copy. The multi-gene coding of common carp cGnRH-II gene offered novel evidence for gene duplication hypothesis. Using semi-quantitative RT-PCR, expression and relative expression levels of cGnRH-II genes were detected in five dissected brain regions, pituitary and gonad of common carp. With the exception of no mRNA2 in ovary, two cGnRH-II genes could be expressed in all the detected tissues. However, expression levels showed an apparent difference in different brain regions, pituitary and gonad. According to the expression characterization of cGnRH-II genes in brain areas, it was presumed that cGnRH-II might mainly work as the neurotransmitter and neuromodulator and also operate in the regulation for the GnRH releasing. Then, the expression of cGnRH-II genes in pituitary and gonad suggested that cGnRH-II might act as the autocrine or paracrine regulator.
Pareto improving interventions in a general equilibrium model with private provision of public goods

Most of the literature on government intervention in models of voluntary public goods supply focuses on interventions that increase the total level of a public good, which is considered to be typically underprovided. However, an intervention that is successful in increasing the public good level need not benefit everyone. In this paper we take a direct approach to welfare properties of voluntary provision equilibria in a full blown general equilibrium model with public goods and study interventions that have the goal of Pareto improving on the voluntary provision outcome. Towards this end, we study a model with many private goods and non-linear production technology for the public good, and hence allow for relative price effects to serve as a powerful channel of intervention. In this setup we show that Pareto improving interventions generally do exist. In particular, direct government provision financed by “small” , or “local” , lump-sum taxes can be used generically to Pareto improve upon the voluntary provision outcome.
Macrofinance Model of the Czech Economy: Asset Allocation Perspective

The paper developes a VAR macrofinance model of the Czech economy. It shows that yield misalignments from the yields implied by the macrofinance model partially determine subsequent yield changes over three to nine months. These yield misalignments tend to persist for a number of months. This persistence of the misalignments was explained by (a) the fact that the macro-economy influences asset markets only at lower frequencies, (b) the liquidity effect particularly during the times of capital inflows to Czech Republic, and (c) the fact that not all misalignments were greater than their historical one standard deviation.
Improving the Cost‐Effectiveness of Ecosystem Management: An Application to Waterfowl Production

Species conservation is an important global policy issue. The design of cost-effective species conservation programs requires resource managers to choose from a suite of conservation activities and sites. This article determines cost-effective conservation strategies for waterfowl using a bioeconomic modeling framework, which is developed using a biological simulation model for waterfowl and regression analysis. The model accounts for (a) a broad range of land-use and direct wildlife conservation activities, (b) the effect of landscape heterogeneity, and (c) interactions between conservation activities. Results indicate that accounting for the three factors listed above can improve the cost-effectiveness of waterfowl conservation on agricultural land.
Confidence Intervals for Estimates of Elasticities

Elasticities are often estimated from the results of demand analysis however, drawing inferences from them may involve assumptions that could influence the outcome. In this paper we investigate one of the most common forms of elasticity which is defined as a ratio of estimated relationships and demonstrate how the Fieller method for the construction of confidence intervals can be used to draw inferences. We estimate the elasticities of expenditure from Engel curves using a variety of estimation models. Parametric Engel curves are modelled using OLS, MM robust regression, and Tobit. Semiparametric Engel curves are estimated using a penalized spline regression. We demonstrate the construction of confidence intervals of the expenditure elasticities for a series of expenditure levels as well as the estimated cumulative density function for the elasticity evaluated for a particular household.
Altered natural killer cell subset distributions in resolved and persistent hepatitis C virus infection following single source exposure

Background: Natural killer (NK) cells may be impaired in patients with persistent hepatitis C virus (HCV) infection, but studies to date have yielded inconsistent findings due to patient and virus heterogeneity and difficulties obtaining appropriate controls. Aims: To overcome these variables, we have examined numbers, phenotypes, cytotoxic activities and cytokine profiles of circulating NK cells from Irish women who acquired infection through administration of HCV genotype 1b-contaminated anti-D immunoglobulin from a single source and matched controls. Results: Comparing 29 women who developed persistent infection with 21 who spontaneously resolved infection and 26 controls, we found that NK cell numbers were consistently lower in the persistently infected group (p = 0.02 and 0.002). This decrease was due to depletions of NK cells expressing low levels of CD56 (CD56dim NK cells; p = 0.004 and 0.0001), whilst CD56bright NK cells were expanded (p = 0.004 and 0.0001). Compared to HCV resolvers, CD56dim NK cells from persistently infected patients less frequently expressed CD16 and more frequently expressed NKG2A/C/E. These phenotypic changes did not significantly affect natural or interleukin-2-induced cytotoxicity by peripheral blood mononuclear cells against K562 and Daudi targets. Greater frequencies of CD56bright NK cells from chronic HCV patients produced interferon-γ compared with HCV responders (p = 0.05) and controls (p = 0.0001) after phorbol ester stimulation in vitro. Conclusions: Alterations in NK subset distributions in chronic HCV infection may explain why previous reports of impaired NK cell functions were difficult to confirm. Altered NK cell functions may contribute to impaired cellular immune responses and chronicity of disease following HCV infection.
Using Utility Functions to Model Risky Bonds

This paper prices defaultable bonds by incorporating inherent risks with the use of utility functions. By allowing risk preferences into the valuation of bonds, nonlinearity is introduced in their pricing. The utility‐function approach affords the advantage of yielding exact solutions to the risky bond pricing equation when familiar stochastic models are used for interest rates. This can be achieved even when the default probability parameter is itself a stochastic variable. Valuations are found for the power‐law and log utility functions under the interest‐rate dynamics of the extended Vasicek and CIR models.
Irritable bowel syndrome in twins: heredity and social learning both contribute to etiology.

BACKGROUND & AIMS Heredity has been suggested to explain the finding that irritable bowel syndrome (IBS) tends to run in families. Research in this area has been limited. The aim of the present study was to assess the relative contribution of genetic and environmental (social learning) influences on the development of IBS by comparing concordance rates in monozygotic and dizygotic twins to concordance between mothers and their children. METHODS Questionnaires soliciting information on the occurrence of more than 80 health problems, including IBS, in self and other family members were sent to both members of 11,986 twin pairs. RESULTS Analysis is based on 10,699 respondents representing 6060 twin pairs. Concordance for IBS was significantly greater (P = 0.030) in monozygotic (17.2%) than in dizygotic (8.4%) twins, supporting a genetic contribution to IBS. However, the proportion of dizygotic twins with IBS who have mothers with IBS (15.2%) was greater than the proportion of dizygotic twins with IBS who have co-twins with IBS (6.7%, P < 0.001), and logistic regression analysis showed that having a mother with IBS and having a father with IBS are independent predictors of irritable bowel status (P < 0.001); both are stronger predictors than having a twin with IBS. Addition of information about the other twin accounted for little additional predictive power. CONCLUSIONS Heredity contributes to development of IBS, but social learning (what an individual learns from those in his or her environment) has an equal or greater influence.
Overall governance, firm value and deviation from one share: one vote principle

Purpose - The objective of this study is to investigate further the interplay between corporate governance and firm performance with special focus on a situation expected to bring larger agency costs to the firm, that is, when voting rights of the dominant shareholder exceed his/her cash flow rights. Design/methodology/approach - The research is conducted in Canada over a four-year period from 2002 to 2005 and uses a balanced sample of 130 firms or 520 firm-year observations. Corporate governance is measured based on the ROB corporate governance index published by Findings - The results clearly show a positive and significant relationship between the ROB governance scores and Tobin's Q, when there is a separation between voting and cash flow rights. In the absence of any excess voting rights, no significant relation is found between governance and performance. Practical implications - The findings suggest that regulators need to exercise caution before deciding whether or not to recommend or impose corporate governance rules for all firms, since the benefits of these rules may vary among the firms. Originality/value - The study contributes to explaining mixed international evidence on the governance-performance relationship, while directing attention to the moderating effect of the deviation from the one share-one vote principle. To the best of the authors' knowledge, no other study using corporate governance indices has taken into account the impact of excess voting rights despite the widespread use of that practice outside the USA.
DNA methylation changes elicited by social stimuli in the brains of worker honey bees

Social environments are notoriously multifactorial, yet studies in rodents have suggested that single variables such as maternal care can in fact be disentangled and correlated with specific DNA methylation changes. This study assesses whether non‐detrimental social environmental variation in a highly plastic social insect is correlated with epigenomic modifications at the DNA methylation level. Honey bee workers perform tasks such as nursing and foraging in response to the social environment in the hive, in an age‐linked but not age‐dependent manner. In this study, the methylation levels of 83 cytosine–phosphate–guanosine dinucleotides over eight genomic regions were compared between the brains of age‐matched bees performing nursing or foraging tasks. The results reveal more changes correlated with task than with chronological age, and also hive‐associated methylation at some sites. One methylation site from a gene encoding Protein Kinase C binding protein 1 was consistently more methylated in foragers than nurses, which is suggested to lead to production of task‐specific protein isoforms via alternative splicing. This study illustrates the ability of the neural epigenome to dynamically respond to complex social stimuli.
Development of a video game that teaches the fundamentals of computer programming

In this paper we present CodeCraft, an educational video game we are developing to teach the fundamentals of computer programming. Similar to other educational tools such as Scratch, Alice, Project Spark, and Code Spells; CodeCraft provides users with an intuitive graphical interface for writing programs. However, CodeCraft is a video game that uses a problem-based learning approach in which players learn programming concepts by solving individual puzzles in an immersive 3D environment. Moreover, CodeCraft is intended to be an autonomous learning game that can be played without teacher support, thereby potentially reaching students in all economic, ethnic, and gender groups. Using an iterative development process and evidence-centered design, this work proposes to further develop CodeCraft and evaluate how it can improve performance in acquiring programming skills.
Falsification of Safety Properties in Multi-Rigid-Body Mechanical Systems with Hybrid Automata and Constraint Satisfaction

We propose a computational reinterpretation of the modelling and analysis of some dynamical properties of complex mechanical systems. In particular, we consider the problem of automatically falsifying safety properties in multirigid-body systems with multiple impacts and friction. The main result is the design and implementation of the Dyverse Bounded Model Checker (DyverseBMC). Due to the complexity of the systems considered, the approach of DyverseBMC is falsification of properties, and is based on a lazy SMT (Satisfiability Modulo Theories) methodology especially designed for mechanical systems with multiple impacts and friction. The model used in the analysis is a type of hybrid automata, called the multi-rigid-body hybrid automaton, which captures continuous dynamics and discrete transitions due to contacts, impacts and discontinuous friction. The input of DyverseBMC is a dynamical transition system generated by DyverseRBT (Dyverse Rigid Body Toolbox), another tool produced to generate automatically a general-purpose dynamical transition system that defines the computational semantics of the multi-rigid-body system. We describe our implementation of the automated analysis method and show how it works for several examples.
Somatic loss of p53 leads to stem/progenitor cell amplification in both mammary epithelial compartments, basal and luminal

Mammary epithelium comprises a layer of luminal cells and a basal myoepithelial cell layer. Both mammary epithelial compartments, basal and luminal, contain stem and progenitor cells, but only basal cells are capable of gland regeneration upon transplantation. Aberrant expansion of stem/progenitor cell populations is considered to contribute to breast tumorigenesis. Germline deletions of p53 in humans and mice confer a predisposition to tumors, and stem cell frequency is abnormally high in the mammary epithelium of p53‐deficient mice. However, it is unknown whether stem/progenitor cell amplification occurs in both, basal and luminal cell populations in p53‐deficient mammary tissue. We used a conditional gene deletion approach to study the role of p53 in stem/progenitor cells residing in the mammary luminal and basal layers. Using two‐ and three‐dimensional cell culture assays, we showed that p53 loss led to the expansion of clonogenic stem/progenitor cells in both mammary epithelial cell layers. Moreover, following p53 deletion, luminal and basal stem/progenitor cells acquired a capacity for unlimited propagation in mammosphere culture. Furthermore, limiting dilution and serial transplantation assays revealed amplification and enhanced self‐renewal in the basal regenerating cell population of p53‐deficient mammary epithelium. Our data suggest that the increase in stem/progenitor cell activity may be, at least, partially mediated by the Notch pathway. Taken together, these results strongly indicate that p53 restricts the propagation and self‐renewal of stem/progenitor cells in both layers of the mammary epithelium providing further insight into the impact of p53 loss in breast cancerogenesis. Stem Cells 2013;31:1857‐1867
Determinants of Corporate Diversification: Evidence from the Property–Liability Insurance Industry

Using a sample of property-liability insurers over the period 1995-2004, we develop and test a model that explains performance as a function of line-of-business diversification and other correlates. Our results indicate that undiversified insurers consistently outperform diversified insurers. In terms of accounting performance, we find a diversification penalty of at least 1 percent of return on assets or 2 percent of return on equity. These findings are robust to corrections for potential endogeneity bias, alternative risk measures, alternative diversification measures, and an alternative estimation technique. Using a market-based performance measure (Tobin's Q) we find that the market applies a significant discount to diversified insurers. The existence of a diversification penalty (and diversification discount) provides strong support for the strategic focus hypothesis. We also find that insurance groups underperform unaffiliated insurers and that stock insurers outperform mutuals. Copyright (c) The Journal of Risk and Insurance, 2008.
Complexity science approaches to the application foresight

Purpose – This paper aims to present an exploration of recent work in complexity theory to explain why and how disruptive events happen in systems and how responses could be better, particularly in the policy‐making arena.Design/methodology/approach – The main method applied is critical thinking combined with a review of selected aspects of complexity theory and a general experience of applying foresight. Several new and practical implications for foresight techniques and their application are derived. Promoting variation is examined as one way to make policies more resilient in a complex system.Findings – Complexity science demonstrates that disruptive events do not need an associated trigger, as they are a normal part of a complex system. This insight implies that if we are always looking for weak signals we will certainly be caught unawares.Practical implications – The assumption that disruptive events can be managed by planning and forecasting is not a workable option. Instead, policy making needs to .
The Influence of Foreign Direct Investment, Intrafirm Trading, and Currency Undervaluation on US Firm Trade Disputes

The authors investigate a puzzling decline in US firm antidumping (AD) filings in an era of persistent foreign currency undervaluations and increasing import competition. Firms exhibit heterogeneity both within and across industries regarding foreign direct investment (FDI). Firms making vertical, or resource-seeking, investments abroad are less likely to file AD petitions and firms are likely to undertake vertical FDI in the context of currency undervaluation. Hence, the increasing vertical FDI of US firms makes trade disputes far less likely. Data on US manufacturing firms reveals that AD filers generally conduct no intrafirm trade with filed-against countries. Persistent currency undervaluation is associated over time with increased vertical FDI and intrafirm trade by US multinational corporations (MNCs) in the undervaluing country. Among larger US MNCs, the likelihood of an AD filing is negatively associated with increases in intrafirm trade. The authors confirm that undervaluation is associated with more AD filings. However, high levels of intrafirm imports from countries with undervalued currencies significantly decrease the likelihood of AD filings. The study also highlights the centrality of firm heterogeneity in international trade and investment in understanding political mobilization over international economic policy.