Miracle-dz/UniFAR-FTUs huggingface dataset:
A Stability Analysis of Divergence Damping on a Latitude–Longitude Grid

AbstractThe dynamical core of an atmospheric general circulation model is engineered to satisfy a delicate balance between numerical stability, computational cost, and an accurate representation of the equations of motion. It generally contains either explicitly added or inherent numerical diffusion mechanisms to control the buildup of energy or enstrophy at the smallest scales. The diffusion fosters computational stability and is sometimes also viewed as a substitute for unresolved subgrid-scale processes. A particular form of explicitly added diffusion is horizontal divergence damping.In this paper a von Neumann stability analysis of horizontal divergence damping on a latitude–longitude grid is performed. Stability restrictions are derived for the damping coefficients of both second- and fourth-order divergence damping. The accuracy of the theoretical analysis is verified through the use of idealized dynamical core test cases that include the simulation of gravity waves and a baroclinic wave. The tests .
Fast memory addressing scheme for radix-4 FFT implementation

In this study, an efficient addressing scheme for radix-4 FFT processor is presented. The proposed method uses extra registers to buffer and reorder the data inputs of the butterfly unit. It avoids the modulo-r addition in the address generation; hence, the critical path is significantly shorter than the conventional radix-4 FFT implementations. A significant property of the proposed method is that the critical path of the address generator is independent from the FFT transform length N, making it extremely efficient for large FFT transforms. For performance evaluation, the new FFT architecture has been implemented by FPGA (Altera Stratix) hardware and also synthesized by CMOS 0. 18µm technology. The results confirm the speed and area advantages for large FFTs. Although only radix-4 FFT address generation is presented in the paper, it can be used for higher radix FFT.
Carbon dioxide and methane exchange at a cool-temperate freshwater marsh

Freshwater marshes have been shown to be strong sinks for carbon dioxide (CO2) on an annual basis relative to other wetland types; however it is likely that these ecosystems are also strong emitters of methane (CH4), reducing their carbon (C) sequestration potential. Multiyear C balances in these ecosystems are necessary therefore to determine their contribution to the global C cycle. Despite this, the number of multiyear studies in marshes is few, with, to the best of our knowledge, only one other Northern marsh C balance reported. This study presents five years of eddy covariance flux measurements of CO2, and four years of warm-season chamber measurements of CH4 at a cool-temperate Typha angustifolia marsh. Annual average cumulative net ecosystem exchange of CO2 (NEE) at the marsh was −224 ± 54 g C m−2 yr−1 (±SD) over the five-year period, ranging from −126 to −284 g C m−2 yr−1. Enhancement of the ecosystem respiration during warmer spring, autumn and winter periods appeared the strongest determinant of annual NEE totals. Warm season fluxes of CH4 from the Typha vegetation (avg. 1.0 ± 1.2 g C m−2 d−1) were significantly higher than fluxes from the water surface (0.5 ± 0.4 g C m−2 d−1) and unvegetated mats (0.2 ± 0.2 g C m−2 d−1). Air temperature was a primary driver of all CH4 fluxes, while water table was not a significant correlate as water levels were always at or above the vegetative mat surfaces. Weighting by the surface cover proportion of water and vegetation yielded a net ecosystem CH4 emission of 127 ± 19 g C m−2 yr−1. Combining CO2 and CH4, the annual C sink at the Mer Bleue marsh was reduced to −97 ± 57 g C m−2 yr−1, illustrating the importance of accounting for CH4 when generating marsh C budgets.
Employee relations in small businesses: examining underdeveloped issues

It is becoming increasingly accepted in the academic and practitioner communities that an organisation's human resources are its major source of sustainable competitive advantage. Despite the apparent importance, there is a relatively large unexplained area in the small business management literature on human resource management and labour relations, especially the latter. This project examines 83 small businesses and discusses ways in which various employee relations functions are practised. The focus is specifically on a few under-researched areas, such as diversity, grievances and legal complaints. Recommendations for Small- and Medium-sized Enterprises (SMEs) are proposed and areas for future research are discussed.
The Effect of Negative Equity on Mortgage Default: Evidence from HAMP PRA

The Home Affordable Modification Program’s Principal Reduction Alternative (HAMP PRA) is a government-sponsored program to reduce the principal balances and monthly mortgage payments of borrowers with negative equity (mortgage balances in excess of their home value, or “under water”) who are in danger of default. We use administrative data to examine the impact of principal forgiveness — a permanent mortgage balance reduction — on borrowers’ subsequent mortgage default. The program’s rules imply a kink in the relationship between principal forgiveness and a borrower’s initial equity level ceteris paribus. Our identification strategy exploits the quasi-experimental variation in principal forgiveness generated by this kink using a regression kink design (RKD), which compares the relationship between initial equity and default on either side of the kink. The quarterly hazard — the proportion of loans that become more than 90 days delinquent and consequently exit the program — in our sample is 3.1 percent; we estimate that it would have been 3.8 percent absent principal forgiveness, which averaged 28 percent of the initial mortgage balance.
Injury-related hospital admissions of military dependents compared with similarly aged nonmilitary insured infants, children, and adolescents

BACKGROUND Military deployment of one or both parents is associated with declines in school performance, behavioral difficulties, and increases in reported mental health conditions, but less is known regarding injury risks in pediatric military dependents. METHODS Kid Health Care Cost and Utilization Project 2006 (KID) was used to identify military dependents aged 0.1 year to 17 years through expected insurance payer being CHAMPUS, Tricare, or CHAMPVA (n = 12,310) and similarly aged privately insured nonmilitary in CHAMPUS, Tricare, or CHAMPVA states (n = 730,065). Mental health diagnoses per 1,000 hospitalizations and mechanisms of injury per 1,000 injury-related hospitalizations are reported. Unweighted univariate analyses used Fisher’s exact, &khgr;2, and analysis of variance tests for significance. Odds ratios are age and sex adjusted with 95% confidence intervals. RESULTS Injury-related admissions were higher in military than in nonmilitary dependents (15.5% vs. 13.2%, p < 0.0001). Age- and sex-adjusted motor vehicle occupant and pedestrian injuries were significantly lower in all-age military dependents but not in age-stratified categories. Very young military dependents had higher all-cause injury admissions (p < 0.0001), drowning/near drowning (p < 0.0001), and intracranial injury (p < 0.0001) and showed a tendency toward higher suffocation (p = 0.055) and crushing injury (p = 0.065). Military adolescents and teenagers had higher suicide/suicide attempts (p = 0.0001) and poisonings from medicinal substances (p = 0.0001). Mental health diagnoses were significantly higher in every age category of military dependents. All-cause in-hospital mortality tended to be greater in military than in nonmilitary dependents (p = 0.052). CONCLUSION This study suggests that military dependents are a vulnerable population with special needs and provides clues to areas where injury prevention professionals might begin to address their needs. LEVEL OF EVIDENCE Prognostic/epidemiologic study, level II.
Effects of Constant Darkness and Constant Light on Circadian Organization and Reproductive Responses in the Ram

The relationship between circadian rhythms in the blood plasma concentrations of melatonin and rhythms in locomotor activity was studied in adult male sheep (Soay rams) exposed to 16-week periods of short days (8 hr of light and 16 hr of darkness; LD 8:16) or long days (LD 16:8) followed by 16-week periods of constant darkness (dim red light; DD) or constant light (LL). Under both LD 8:16 and LD 16:8, there was a clearly defined 24-hr rhythm in plasma concentrations of melatonin, with high levels throughout the dark phase. Periodogram analysis revealed a 24-hr rhythm in locomotor activity under LD 8:16 and LD 16:8. The main bouts of activity occurred during the light phase. A change from LD 8:16 to LD 16:8 resulted in a decrease in the duration of elevated melatonin secretion (melatonin peak) and an increase in the duration of activity corresponding to the changes in the ratio of light to darkness. In all rams, a significant circadian rhythm of activity persisted over the first 2 weeks following transfer from an entraining photoperiod to DD, with a mean period of 23.77 hr. However, the activity rhythms subsequently became disorganized, as did the 24-hr melatonin rhythms. The introduction of a 1-hr light pulse every 24 hr (LD 1:23) for 2 weeks after 8 weeks under DD reinduced a rhythm in both melatonin secretion and activity: the end of the 1-hr light period acted as the dusk signal, producing a normal temporal association of the two rhythms. Under LL, the 24-hr melatonin rhythms were disrupted, though several rams still showed periods of elevated melatonin secretion. Significant activity rhythms were either absent or a weak component occurred with a period of 24 hr. The introduction of a 1-hr dark period every 24 hr for 2 weeks after 8 weeks under LL (LD 23:1) failed to induce or entrain rhythms in either of the parameters. The occurrence of 24-hr activity rhythm in some rams under LL may indicate nonphotoperiodic entrainment signals in our experimental facility. Reproductive re sponses to the changes in photoperiod were also monitored. After pretreatment with LD 8:16, the rams were sexually active; exposure to LD 16:8, DD, or LL resulted in a decline in all measures of reproductive function. The decline was slower under DD than LD 16:8 or LL. Conversely, after pretreatment with LD 16:8, the rams were sexually regressed, and exposure to LD 8:16, DD, or LL resulted in redevelopment of the reproductive axis; the rate of development was similar in all three treatments. The overall results illustrate that in the Soay ram the circadian organization of melatonin and activity rhythms is disrupted during pro longed exposure to DD and LL. Reproductive regression or recrudescence occurs under these constant conditions, apparently dictated by the immediate photoperiodic history.
Education policy and social class in England and New Zealand: an instructive comparison

This article explores the ‘middle-class pressure thesis’, the extent to which recent education policy in England under New Labour may be shaped by the need to respond to an increasingly large and anxious middle class. It discusses why the intensification of middle-class pressure on education policy in England could be expected and outlines how New Labour's education policies can be seen as a response to that pressure. In the latter part of the article the case of New Zealand is used to ‘speak back’ to the middle-class pressure thesis in England. New Zealand highlights the potent influence of England's historic and recent class context on policy by demonstrating a setting where market policies have been embraced by policy makers but where class has played a less important role. The article suggests that although the means by which social class at the local level might act back on and help shape the direction of national education policy will be difficult to investigate, it would be a rewarding direction for future policy research related to social class.
N-Linked Glycosylation in Archaea: a Structural, Functional, and Genetic Analysis

SUMMARY N-glycosylation of proteins is one of the most prevalent posttranslational modifications in nature. Accordingly, a pathway with shared commonalities is found in all three domains of life. While excellent model systems have been developed for studying N-glycosylation in both Eukarya and Bacteria, an understanding of this process in Archaea was hampered until recently by a lack of effective molecular tools. However, within the last decade, impressive advances in the study of the archaeal version of this important pathway have been made for halophiles, methanogens, and thermoacidophiles, combining glycan structural information obtained by mass spectrometry with bioinformatic, genetic, biochemical, and enzymatic data. These studies reveal both features shared with the eukaryal and bacterial domains and novel archaeon-specific aspects. Unique features of N-glycosylation in Archaea include the presence of unusual dolichol lipid carriers, the use of a variety of linking sugars that connect the glycan to proteins, the presence of novel sugars as glycan constituents, the presence of two very different N-linked glycans attached to the same protein, and the ability to vary the N-glycan composition under different growth conditions. These advances are the focus of this review, with an emphasis on N-glycosylation pathways in Haloferax, Methanococcus, and Sulfolobus.
Geraniol inhibits murine skin tumorigenesis by modulating COX‐2 expression, Ras‐ERK1/2 signaling pathway and apoptosis

Geraniol (GOH), a naturally occurring monoterpene, has been shown to have antiproliferative, cell cycle arrest and apoptosis‐inducing effects, and represents a promising cancer chemopreventive agent. In the present study, we investigated the chemopreventive potential of GOH (50 and 100 mg kg−1 body weight) against 7,12‐dimethylbenz[a]anthracene (DMBA)/12‐O‐tetradecanoylphorbol 13‐acetate (TPA)‐mediated skin tumorigenesis in Swiss albino mice. The topical treatment of GOH, 30 min prior to TPA (2 µg per 200 µl of acetone) treatment significantly inhibited TPA‐induced skin edema, hyperplasia, COX‐2 induction and oxidative stress response. The GOH treatment also resulted in reduction of TPA‐induced ornithine decarboxylase activity and [3H] thymidine incorporation by 53% (P < 0.001) and 41% (P < 0.001), respectively. We found that GOH treatment significantly inhibited the tumor incidence and number of tumors (P < 0.001) and extended the latency period from 4 weeks in DMBA/TPA treatment group to 10 weeks in GOH‐pretreated mice. Furthermore, we observed that GOH treatment significantly suppressed the Ras/Raf/ERK1/2 signaling pathway in skin tumor. Consistently, GOH‐treated skin tumors showed reduced expression of Bcl‐2 and increased expression of Bax in these lesions. Thus, it was concluded that GOH inhibits DMBA/TPA‐mediated skin tumorigenesis by attenuating the Ras proliferation pathway and inducing pro‐apoptotic state via inhibition of oxidative stress response and inflammation. Copyright © 2012 John Wiley & Sons, Ltd.
Sectoral investigation of management mind-sets and management behaviours

This is the second of two papers examining the responses of senior executives in 682 organizations to a range of total quality management (TQM) related issues. The first paper concentrated on an analysis of their attitudes and perceptions about five topics, namely awareness and understanding of TQM, intentions to improve organizational performance, strategic orientation and knowledge of customer satisfaction levels. Two hypotheses were formulated relating to the continued dominance of the manufacturing sectors in TQM and the influence of export orientation upon sectoral implementation. This second paper follows up these issues, exploring associated implementation behaviours in these organizations. The underlying assumption that behaviours should largely reflect the attitudes and perceptions of the senior executives is shown to be valid. The potential for dysfunctionality between espoused behaviours and actual behaviours in use is also explored and some instances of this phenomenon are highlighted. Many se.
Dual class shares – is India ready for it?

Market evidence suggest that a class of common stock with superior voting rights trades at systematically higher prices than an identical class of stock with inferior voting rights, as control over the firm grants the promoters some opportunity to receive a higher payoff. Differential voting rights class of shares may attract a certain class of investors who are only interested in the economic benefits of a company. It assists management in deterring potential rivals from winning a control and allows raising fresh capital for growth without giving up control. The value of controlling a firm derives from the fact that you believe that you or someone else would operate the firm differently from the way it is being run currently. Differential voting rights shares in different countries have indicated that voting rights are generally worth between 10% and 20% of the value of common stock. This article intends to create awareness about differential voting rights shares, to study the international as well as domestic experience and tries to examine the various factors that affect differential voting rights share prices.
Fiscal policy multipliers: The role of monopolistic competition, scale economies, and intertemporal substitution in labour supply

A dynamic macroeconomic model of monopolistic competition is developed for the closed economy. Forward looking consumers demand differentiated goods, supply labor, and save part of their income in the form of shares. Producers manufacture the differentiated goods by using labor and capital. The author studies the short-run, transition, and long-run effects of fiscal policy. Comparisons with the New Classical case of perfect competition are made. Simple expressions for multipliers are derived. The sensitivity of the multipliers for diversity preference and Ethier productivity effects, intratemporal and intertemporal substitution effects, and markup effects under free and restricted entry are also studied. Copyright 1998 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.
United States – Measures Affecting Trade in Large Civil Aircraft (Second Complaint): some comments

Abstract This paper provides limited comments on portions of the Appellate Body (AB) judgment. With respect to the existence of a subsidy under contracts with NASA and DOD, we find the discussion of whether Boeing has received a financial contribution to be a distraction from the core issue – whether the mix of monetary compensation, access to government personnel and facilities, and IP rights ‘overcompensated’ Boeing for the services it rendered (or whether the government paid more for those services than they were worth to the government). The panel's analysis of this core issue, which focused on whether Boeing was the principal beneficiary of the contracts, is flawed, but the alternative approach of the AB is equally flawed. The analogy between an R&D joint venture and equity infusion is dubious, and the existence of a benefit simply does not turn on how one dimension of the contract (the allocation of the resulting intellectual property rights (IP)) is specified. We also argue that even a contract that confers a ‘benefit’ (or economic rent) on Boeing could still be an efficient arrangement for the allocation of cost and prospective revenues between the two partners. With respect to adverse effects, we argue that the panel and AB failed to develop an adequate counterfactual with respect to product developments; that is, it is not implausible that if Boeing had not received a subsidy and would accordingly have developed the 787 later, Airbus would also have delayed the development of the A350. To determine the existence of adverse effects, the panel and AB should have considered the profit (or sales) of Airbus relative to what would have happened in this counterfactual world. Finally, we observe that the analysis of lost sales and ‘price suppression’ fails to consider the specific features of competition in the aircraft industry. Unlike what happens in the market with posted prices, when contracts are individually negotiated, whether the outcome of competition is affected by a subsidy depends on the relative cost position of the bidders. When Boeing is the lowest cost bidder, the only effect of the subsidy is to increase its rent, with no effect on sales or prices for Airbus.
Infections by human gastrointestinal helminths are associated with changes in faecal microbiota diversity and composition

Investigations of the impact that patent infections by soil-transmitted gastrointestinal nematode parasites exert on the composition of the host gut commensal flora are attracting growing interest by the scientific community. However, information collected to date varies across experiments, and further studies are needed to identify consistent relationships between parasites and commensal microbial species. Here, we explore the qualitative and quantitative differences between the microbial community profiles of cohorts of human volunteers from Sri Lanka with patent infection by one or more parasitic nematode species (H+), as well as that of uninfected subjects (H-) and of volunteers who had been subjected to regular prophylactic anthelmintic treatment (Ht). High-throughput sequencing of the bacterial 16S rRNA gene, followed by bioinformatics and biostatistical analyses of sequence data revealed no significant differences in alpha diversity (Shannon) and richness between groups (P = 0.65, P = 0.13 respectively); however, beta diversity was significantly increased in H+ and Ht when individually compared to H-volunteers (P = 0.04). Among others, bacteria of the families Verrucomicrobiaceae and Enterobacteriaceae showed a trend towards increased abundance in H+, whereas the Leuconostocaceae and Bacteroidaceae showed a relative increase in H- and Ht respectively. Our findings add valuable knowledge to the vast, and yet little explored, research field of parasite—microbiota interactions and will provide a basis for the elucidation of the role such interactions play in pathogenic and immune-modulatory properties of parasitic nematodes in both human and animal hosts.
The Overlooked Assumption Behind the New Keynesian Phillips Curve

The New Keynesian Phillips Curve rests on an assumption not mentioned in the literature. Specifically, firms that are price constrained align their production along the demand curve, ignoring the effects of marginal cost on supply. This paper investigates what happens when the relationship between marginal cost and pricing conforms instead to standard microeconomic theory. It shows that the New Keynesian Phillips Curve is invalid and prices are not procyclical, but acyclical in this case. Therefore, if the assumption in question is necessary to the model, it should be acknowledged for the sake of transparency.
Implementing Environmental Management Systems in Small- and Medium-Sized Hotels: Obstacles

Small- and medium-sized enterprises (SMEs) make up the vast majority of businesses in Hong Kong. However, a review of the literature about environmental management and environmental management systems (EMSs) reveals that very few studies have examined EMS implementation in small- and medium-sized hotels (SMHs). This study aimed to identify the barriers to the adoption and implementation of a formal EMS by SMHs in Hong Kong. Exploratory factor analysis indicated that nine factors can hinder the adoption of such a system by SMHs, five of which are unique to these hotels. In descending order, they are (a) lack of a sense of urgency, (b) ambiguity of EMS standards, (c) lack of qualified verifiers/consultants, (d) conflicting guidance, and (e) inconsistent support. The findings offer some explanation for the limited action taken by these hotels to improve their environmental performance. The policy implications for hotel managers who are committed to implementing an EMS are also discussed.