Development, evaluation, and selection of a dodge continuous sampling plan when the recitifying operation is not perfect

H.F. Dodge developed a widely used sampling plan for the rectifying inspection of a continuous output. This paper considers the development, evaluation and selection of a Dodge continuous sampling plan when this portion of the rectifying operation is not perfect

Stock Repurchases And False Signals

Each year many firms repurchase shares of their common stock. Research evidence shows that when firms announce the repurchase of common stock, their share prices typically rise.  Numerous studies attribute these increases to a signaling effect.  But some firms that announce their intention of repurchasing shares of common stock either repurchase no shares at all or repurchase fewer shares than initially announced. Although the practice of firms intentionally announcing the repurchase of more shares than they expect to repurchase is illegal, the expected increase in share prices may give firms an incentive to make such false announcements. This study surveys top financial executives to learn the extent that firms repurchase fewer shares than announced, identify the reasons for this activity, and learn how managers view this activity.  We surveyed 642 firms that conducted common stock repurchases from January 1998 to September 1999.  Based on 218 responses, we find that while managers are uncertain about the legality of this activity, they believe that the intentional repurchase of fewer shares than announced is unethical, sends a false signal to the market, and damages the firm’s credibility with its stockholders.  Managers also believe that firms repurchasing fewer shares than announced should publicly reveal both the reason for not repurchasing all shares and the amount by which the repurchase fell short of the firm’s announced intentions.  Despite these beliefs, managers report that repurchasing fewer shares than announced is a common practice

Distributing excess cash: the role of specially designated dividends

This study explores why firms distribute excess cash as specially designated dividends (SDDs) instead of using regular dividends or repurchasing shares. We survey top managers of NASDAQ, AMEX, and NYSE firms issuing at least one SDD between 1994 and 2001. The results show that firms tend to pay SDDs when they experience strong earnings and cash flows and want to increase at least temporarily the yield to shareholders. Having strong earnings and cash flows also provide an impetus for regular dividend increases, but paying regular dividends is part of a firm\u27s standard dividend policy. The primary motives for repurchasing shares are to take advantage of perceived market undervaluation of the firm\u27s shares and to improve performance measures, especially. Overall, the results lend support to the signaling explanation for the disbursement of excess funds, but not the free cash flow or wealth transfer explanations

An investigation of Pseudomonas aeruginosa biofilm growth on novel nanocellulose fibre dressings

Nanocellulose from wood is a novel biomaterial, which is highly fibrillated at the nanoscale. This affords the material a number of advantages, including self-assembly, biodegradability and the ability to absorb and retain moisture, which highlights its potential usefulness in clinical wound-dressing applications. In these in vitro studies, the wound pathogen Pseudomonas aeruginosa PAO1 was used to assess the ability of two nanocellulose materials to impair bacterial growth (<48 h). The two nanocelluloses had a relatively small fraction of residual fibres (<4%) and thus a large fraction of nanofibrils (widths < 20 nm). Scanning electron microscopy and confocal laser scanning microscopy imaging demonstrated impaired biofilm growth on the nanocellulose films and increased cell death when compared to a commercial control wound dressing, Aquacel®. Nanocellulose suspensions inhibited bacterial growth, whilst UV-vis spectrophotometry and laser profilometry also revealed the ability of nanocellulose to form smooth, translucent films. Atomic force microscopy studies of the surface properties of nanocellulose demonstrated that PAO1 exhibited markedly contrasting morphology when grown on the nanocellulose film surfaces compared to an Aquacel® control dressing (p < 0.05). This study highlights the potential utility of these biodegradable materials, from a renewable source, for wound dressing applications in the prevention and treatment of biofilm development

Michael addition of thiols with 4-methyleneglutamic acid: Preparation of adducts, their properties and presence in peanuts

The thioethers, S-(4-amino-2,4-dicarboxybutyl)cysteamine, S-(4-amino-2,4-dicarboxybutyl)cysteine and S-(4-amino-2,4-dicarboxybutyl)glutathione, were synthesized by a Michael addition between 4-methyleneglutamic acid and the respective thiol. In dilute aqueous solution, the reactions exhibit second order kinetics; glutathione reacts much slower than cysteine or cysteamine. The adducts were characterized chromatographically, electrophoretically, and by their infra-red and nuclear magnetic resonance spectra. None of these thioethers was detected in peanut plants (Arachis hypogaea L.), even though large amounts of 4-methyleneglutamic acid, its amide, and glutathione are synthesized during peanut germination.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/24005/1/0000254.pd

CASES: A Smart, Compact GPS Software Receiver for Space Weather Monitoring

A real-time software-defined GPS receiver for the L1 C/A and L2C codes has been developed as a low-cost space weather instrument for monitoring ionospheric scintillation and total electron content. The so-called CASES receiver implements several novel processing techniques not previously published that make it well suited for space weather monitoring: (A) a differencing technique for eliminating local clock effects, (B) an advanced triggering mechanism for determining the onset of scintillation, (C) data buffering to permit observation of the prelude to scintillation, and (D) data-bit prediction and wipe-off for robust tracking. The receiver has been tested in a variety of benign and adverse signal conditions (e.g., severe ionospheric scintillation, both real and simulated); the results are presented here. The custom hardware platform on which the software runs is compact while remaining flexible and extensible. The CASES platform consists of a digital signal processor, an ARM microcontroller, and a custom-built narrow-band dualfrequency front end. Because the receiver is softwaredefined, it can be remotely reprogrammed via the internet or another communications link.Aerospace Engineering and Engineering Mechanic

The interaction of wood nanocellulose dressings and the wound pathogen P. aeruginosa

Chronic wounds pose an increasingly significant worldwide economic burden (over £1 billion per annum in the UK alone). With the escalation in global obesity and diabetes, chronic wounds will increasingly be a significant cause of morbidity and mortality. Cellulose nanofibrils (CNF) are highly versatile and can be tailored with specific physical properties to produce an assortment of three-dimensional structures (hydrogels, aerogels or films), for subsequent utilization as wound dressing materials. Growth curves using CNF (diameter 0.05) over 24 h. These data demonstrate the potential of nanocellulose materials in the development of novel dressings that may afford significant clinical potential

Parasitism perturbs the mucosal microbiome of Atlantic Salmon

Interactions between parasite, host and host-associated microbiota are increasingly understood as important determinants of disease progression and morbidity. Salmon lice, including the parasitic copepod Lepeophtheirus salmonis and related species, are perhaps the most important problem facing Atlantic Salmon aquaculture after feed sustainability. Salmon lice parasitize the surface of the fish, feeding off mucus, scales and underlying tissue. Secondary bacterial infections are a major source of associated morbidity. In this study we tracked the diversity and composition of Salmo salar skin surface microbiota throughout a complete L. salmonis infection cycle among 800 post-smolts as compared to healthy controls. Among infected fish we observed a significant reduction in microbial richness (Chao1, P = 0.0136), raised diversity (Shannon, P &#60; 7.86e-06) as well as highly significant destabilisation of microbial community composition (Pairwise Unifrac, beta-diversity, P &#60; 1.86e-05; P = 0.0132) by comparison to controls. While undetectable on an individual level, network analysis of microbial taxa on infected fish revealed the association of multiple pathogenic genera (Vibrio, Flavobacterium, Tenacibaculum, Pseudomonas) with high louse burdens. We discuss our findings in the context of ecological theory and colonisation resistance, in addition to the role microbiota in driving primary and secondary pathology in the host

The 100 most eminent psychologists of the 20th century.

A rank-ordered list was constructed that reports the first 99 of the 100 most eminent psychologists of the 20th century. Eminence was measured by scores on 3 quantitative variables and 3 qualitative variables. The quantitative variables were journal citation frequency, introductory psychology textbook citation frequency, and survey response frequency. The qualitative variables were National Academy of Sciences membership, election as American Psychological Association (APA) president or receipt of the APA Distinguished Scientific Contributions Award, and surname used as an eponym. The qualitative variables were quantified and combined with the other 3 quantitative variables to produce a composite score that was then used to construct a rank-ordered list of the most eminent psychologists of the 20th century. The discipline of psychology underwent a remarkable transformation during the 20th cen-tury, a transformation that included a shift away from the European-influenced philosophical psychology of the late 19th century to th