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6 results on '"Luff, M."'

1. Entrepreneurial Finance and HRM practices in Small Firms

Author

Di Pietro, F, Monaghan, S, O’Hagan-Luff, M, Di Pietro F, Monaghan S, O’Hagan-Luff M, Di Pietro, F, Monaghan, S, O’Hagan-Luff, M, Di Pietro F, Monaghan S, and O’Hagan-Luff M

Abstract

As new ventures grow, they face significant challenges to their internal operations and organizational structure. These challenges are particularly evident in small, entrepreneurial firms, who have limited resources, under-developed capabilities and often seek funding from external investors to enable growth. We draw on institutional theory, particularly institutional logics, to explore the role of different investors on human resource management (HRM) in small, entrepreneurial firms. Using qualitative multiple-case study analysis of seven firms within the Irish agrifood industry, our study shows how external investors can prompt changes to HRM, illustrating three approaches to HRM practice: operational – aimed at improving efficiency and internal functioning through human resources; strategic – aimed at improving firm performance and competitive advantage; and transformational – leading to a fundamental redirection of the firm. These findings facilitate the development of a framework for how investor logic prompts changes to HRM practices of small, entrepreneurial firms. By examining the interaction of institutional logics, this paper contributes a more nuanced understanding of entrepreneurial finance and its implications on HRM practices in small, entrepreneurial firms.

Published
2022

2. Entrepreneurial Finance and HRM practices in Small Firms

Author

Di Pietro, F, Monaghan, S, O’Hagan-Luff, M, Di Pietro F, Monaghan S, O’Hagan-Luff M, Di Pietro, F, Monaghan, S, O’Hagan-Luff, M, Di Pietro F, Monaghan S, and O’Hagan-Luff M

Abstract

As new ventures grow, they face significant challenges to their internal operations and organizational structure. These challenges are particularly evident in small, entrepreneurial firms, who have limited resources, under-developed capabilities and often seek funding from external investors to enable growth. We draw on institutional theory, particularly institutional logics, to explore the role of different investors on human resource management (HRM) in small, entrepreneurial firms. Using qualitative multiple-case study analysis of seven firms within the Irish agrifood industry, our study shows how external investors can prompt changes to HRM, illustrating three approaches to HRM practice: operational – aimed at improving efficiency and internal functioning through human resources; strategic – aimed at improving firm performance and competitive advantage; and transformational – leading to a fundamental redirection of the firm. These findings facilitate the development of a framework for how investor logic prompts changes to HRM practices of small, entrepreneurial firms. By examining the interaction of institutional logics, this paper contributes a more nuanced understanding of entrepreneurial finance and its implications on HRM practices in small, entrepreneurial firms.

Published
2022

3. Genetic analyses identify widespread sex-differential participation bias

Author

Pirastu, N, Cordioli, M, Nandakumar, P, Mignogna, G, Abdellaoui, A, Hollis, B, Kanai, M, Rajagopal, V, Parolo, P, Baya, N, Carey, C, Karjalainen, J, Als, T, Van der Zee, M, Day, F, Ong, K, Agee, M, Aslibekyan, S, Bell, R, Bryc, K, Clark, S, Elson, S, Fletez-Brant, K, Fontanillas, P, Furlotte, N, Gandhi, P, Heilbron, K, Hicks, B, Huber, K, Jewett, E, Jiang, Y, Kleinman, A, Lin, K, Litterman, N, Luff, M, Mcintyre, M, Mcmanus, K, Mountain, J, Mozaffari, S, Noblin, E, Northover, C, O'Connell, J, Petrakovitz, A, Pitts, S, Poznik, G, Sathirapongsasuti, J, Shelton, J, Shringarpure, S, Tian, C, Tung, J, Tunney, R, Vacic, V, Wang, X, Zare, A, Mortensen, P, Mors, O, Werge, T, Nordentoft, M, Hougaard, D, Bybjerg-Grauholm, J, Baekvad-Hansen, M, Morisaki, T, de Geus, E, Bellocco, R, Okada, Y, Borglum, A, Joshi, P, Auton, A, Hinds, D, Neale, B, Walters, R, Nivard, M, Perry, J, Ganna, A, Pirastu N., Cordioli M., Nandakumar P., Mignogna G., Abdellaoui A., Hollis B., Kanai M., Rajagopal V. M., Parolo P. D. B., Baya N., Carey C. E., Karjalainen J., Als T. D., Van der Zee M. D., Day F. R., Ong K. K., Agee M., Aslibekyan S., Bell R. K., Bryc K., Clark S. K., Elson S. L., Fletez-Brant K., Fontanillas P., Furlotte N. A., Gandhi P. M., Heilbron K., Hicks B., Huber K. E., Jewett E. M., Jiang Y., Kleinman A., Lin K. -H., Litterman N. K., Luff M. K., McIntyre M. H., McManus K. F., Mountain J. L., Mozaffari S. V., Noblin E. S., Northover C. A. M., O'Connell J., Petrakovitz A. A., Pitts S. J., Poznik G. D., Sathirapongsasuti J. F., Shelton J. F., Shringarpure S., Tian C., Tung J. Y., Tunney R. J., Vacic V., Wang X., Zare A., Mortensen P. B., Mors O., Werge T., Nordentoft M., Hougaard D. M., Bybjerg-Grauholm J., Baekvad-Hansen M., Morisaki T., de Geus E., Bellocco R., Okada Y., Borglum A. D., Joshi P., Auton A., Hinds D., Neale B. M., Walters R. K., Nivard M. G., Perry J. R. B., Ganna A., Pirastu, N, Cordioli, M, Nandakumar, P, Mignogna, G, Abdellaoui, A, Hollis, B, Kanai, M, Rajagopal, V, Parolo, P, Baya, N, Carey, C, Karjalainen, J, Als, T, Van der Zee, M, Day, F, Ong, K, Agee, M, Aslibekyan, S, Bell, R, Bryc, K, Clark, S, Elson, S, Fletez-Brant, K, Fontanillas, P, Furlotte, N, Gandhi, P, Heilbron, K, Hicks, B, Huber, K, Jewett, E, Jiang, Y, Kleinman, A, Lin, K, Litterman, N, Luff, M, Mcintyre, M, Mcmanus, K, Mountain, J, Mozaffari, S, Noblin, E, Northover, C, O'Connell, J, Petrakovitz, A, Pitts, S, Poznik, G, Sathirapongsasuti, J, Shelton, J, Shringarpure, S, Tian, C, Tung, J, Tunney, R, Vacic, V, Wang, X, Zare, A, Mortensen, P, Mors, O, Werge, T, Nordentoft, M, Hougaard, D, Bybjerg-Grauholm, J, Baekvad-Hansen, M, Morisaki, T, de Geus, E, Bellocco, R, Okada, Y, Borglum, A, Joshi, P, Auton, A, Hinds, D, Neale, B, Walters, R, Nivard, M, Perry, J, Ganna, A, Pirastu N., Cordioli M., Nandakumar P., Mignogna G., Abdellaoui A., Hollis B., Kanai M., Rajagopal V. M., Parolo P. D. B., Baya N., Carey C. E., Karjalainen J., Als T. D., Van der Zee M. D., Day F. R., Ong K. K., Agee M., Aslibekyan S., Bell R. K., Bryc K., Clark S. K., Elson S. L., Fletez-Brant K., Fontanillas P., Furlotte N. A., Gandhi P. M., Heilbron K., Hicks B., Huber K. E., Jewett E. M., Jiang Y., Kleinman A., Lin K. -H., Litterman N. K., Luff M. K., McIntyre M. H., McManus K. F., Mountain J. L., Mozaffari S. V., Noblin E. S., Northover C. A. M., O'Connell J., Petrakovitz A. A., Pitts S. J., Poznik G. D., Sathirapongsasuti J. F., Shelton J. F., Shringarpure S., Tian C., Tung J. Y., Tunney R. J., Vacic V., Wang X., Zare A., Mortensen P. B., Mors O., Werge T., Nordentoft M., Hougaard D. M., Bybjerg-Grauholm J., Baekvad-Hansen M., Morisaki T., de Geus E., Bellocco R., Okada Y., Borglum A. D., Joshi P., Auton A., Hinds D., Neale B. M., Walters R. K., Nivard M. G., Perry J. R. B., and Ganna A.

Abstract

Genetic association results are often interpreted with the assumption that study participation does not affect downstream analyses. Understanding the genetic basis of participation bias is challenging since it requires the genotypes of unseen individuals. Here we demonstrate that it is possible to estimate comparative biases by performing a genome-wide association study contrasting one subgroup versus another. For example, we showed that sex exhibits artifactual autosomal heritability in the presence of sex-differential participation bias. By performing a genome-wide association study of sex in approximately 3.3 million males and females, we identified over 158 autosomal loci spuriously associated with sex and highlighted complex traits underpinning differences in study participation between the sexes. For example, the body mass index–increasing allele at FTO was observed at higher frequency in males compared to females (odds ratio = 1.02, P = 4.4 × 10−36). Finally, we demonstrated how these biases can potentially lead to incorrect inferences in downstream analyses and propose a conceptual framework for addressing such biases. Our findings highlight a new challenge that genetic studies may face as sample sizes continue to grow.

Published
2021

4. A genome-wide association study with 1,126,563 individuals identifies new risk loci for Alzheimer’s disease

Author

Wightman, D. P., Jansen, I. E., Savage, J. E., Shadrin, A. A., Bahrami, S., Holland, D., Rongve, A., Børte, S., Winsvold, B. S., Drange, O. K., Martinsen, A. E., Skogholt, A. H., Willer, C., Bråthen, G., Bosnes, I., Nielsen, J. B., Fritsche, L. G., Thomas, L. F., Pedersen, L. M., Gabrielsen, M. E., Johnsen, M. B., Meisingset, T. W., Zhou, W., Proitsi, P., Hodges, A., Dobson, R., Velayudhan, L., Agee, M., Aslibekyan, S., Babalola, E., Bell, R. K., Bielenberg, J., Bryc, K., Bullis, E., Cameron, B., Coker, D., Partida, G. C., Dhamija, D., Das, S., Elson, S. L., Filshtein, T., Fletez-Brant, K., Fontanillas, P., Freyman, W., Gandhi, P. M., Hicks, B., Hinds, D. A., Huber, K. E., Jewett, E. M., Jiang, Y., Kleinman, A., Kukar, K., Lane, V., Lin, K. -H, Lowe, M., Luff, M. K., McCreight, J. C., McIntyre, M. H., McManus, K. F., Micheletti, S. J., Moreno, M. E., Mountain, J. L., Mozaffari, S. V., Nandakumar, P., Noblin, E. S., O’Connell, J., Petrakovitz, A. A., Poznik, G. D., Schumacher, M., Shastri, A. J., Shelton, J. F., Shi, J., Shringarpure, S., Tian, C., Tran, V., Tung, J. Y., Wang, X., Wang, W., Weldon, C. H., Wilton, P., Sealock, J. M., Davis, L. K., Pedersen, N. L., Reynolds, C. A., Karlsson, Ida K., Magnusson, S., Stefansson, H., Thordardottir, S., Jonsson, P. V., Snaedal, J., Zettergren, A., Skoog, I., Kern, S., Waern, M., Zetterberg, H., Blennow, K., Stordal, E., Hveem, K., Zwart, J. -A, Athanasiu, L., Selnes, P., Saltvedt, I., Sando, S. B., Ulstein, I., Djurovic, S., Fladby, T., Aarsland, D., Selbæk, G., Ripke, S., Stefansson, K., Andreassen, O. A., Posthuma, D., Team, 23andMe Research, Wightman, D. P., Jansen, I. E., Savage, J. E., Shadrin, A. A., Bahrami, S., Holland, D., Rongve, A., Børte, S., Winsvold, B. S., Drange, O. K., Martinsen, A. E., Skogholt, A. H., Willer, C., Bråthen, G., Bosnes, I., Nielsen, J. B., Fritsche, L. G., Thomas, L. F., Pedersen, L. M., Gabrielsen, M. E., Johnsen, M. B., Meisingset, T. W., Zhou, W., Proitsi, P., Hodges, A., Dobson, R., Velayudhan, L., Agee, M., Aslibekyan, S., Babalola, E., Bell, R. K., Bielenberg, J., Bryc, K., Bullis, E., Cameron, B., Coker, D., Partida, G. C., Dhamija, D., Das, S., Elson, S. L., Filshtein, T., Fletez-Brant, K., Fontanillas, P., Freyman, W., Gandhi, P. M., Hicks, B., Hinds, D. A., Huber, K. E., Jewett, E. M., Jiang, Y., Kleinman, A., Kukar, K., Lane, V., Lin, K. -H, Lowe, M., Luff, M. K., McCreight, J. C., McIntyre, M. H., McManus, K. F., Micheletti, S. J., Moreno, M. E., Mountain, J. L., Mozaffari, S. V., Nandakumar, P., Noblin, E. S., O’Connell, J., Petrakovitz, A. A., Poznik, G. D., Schumacher, M., Shastri, A. J., Shelton, J. F., Shi, J., Shringarpure, S., Tian, C., Tran, V., Tung, J. Y., Wang, X., Wang, W., Weldon, C. H., Wilton, P., Sealock, J. M., Davis, L. K., Pedersen, N. L., Reynolds, C. A., Karlsson, Ida K., Magnusson, S., Stefansson, H., Thordardottir, S., Jonsson, P. V., Snaedal, J., Zettergren, A., Skoog, I., Kern, S., Waern, M., Zetterberg, H., Blennow, K., Stordal, E., Hveem, K., Zwart, J. -A, Athanasiu, L., Selnes, P., Saltvedt, I., Sando, S. B., Ulstein, I., Djurovic, S., Fladby, T., Aarsland, D., Selbæk, G., Ripke, S., Stefansson, K., Andreassen, O. A., Posthuma, D., and Team, 23andMe Research

Abstract

Late-onset Alzheimer’s disease is a prevalent age-related polygenic disease that accounts for 50–70% of dementia cases. Currently, only a fraction of the genetic variants underlying Alzheimer’s disease have been identified. Here we show that increased sample sizes allowed identification of seven previously unidentified genetic loci contributing to Alzheimer’s disease. This study highlights microglia, immune cells and protein catabolism as relevant to late-onset Alzheimer’s disease, while identifying and prioritizing previously unidentified genes of potential interest. We anticipate that these results can be included in larger meta-analyses of Alzheimer’s disease to identify further genetic variants that contribute to Alzheimer’s pathology.

Published
2021
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5. The effect of footrot on body weight and wool growth of sheep

Author

Marshall, D. J, Walker, R. I, Cullis, Brian R, Luff, M. F, Marshall, D. J, Walker, R. I, Cullis, Brian R, and Luff, M. F

Abstract

Body weight and traits associated with production of wool were measured over a 2-year period between 1985 and 1987 in south-western New South Wales in a flock of Merino wethers experimentally infected with footrot. The disease was allowed to spread freely amongst 150 of the flock but kept at very low prevalence in the remaining 50 by preventive footbathing during transmission periods. Severe, underrunning footrot had a significant adverse effect on body weight, for each year of the trial. Body weight was most severely reduced at times of the year when footrot was spreading among animals and lesions were severe. The mean body weight of the infected group at the end of the 2 years of observation was 7.3 kg (11.6%) below that of the control group. Footrot also depressed wool growth, with the mean clean fleece weight of the infected group being 0.4 kg (8%) lighter than that of the controls at each of the 2 annual shearings. There were no consistent differences between the groups for the other wool characteristics measured.

Published
1991

6. The effect of footrot on body weight and wool growth of sheep

Author

Marshall, D. J, Walker, R. I, Cullis, Brian R, Luff, M. F, Marshall, D. J, Walker, R. I, Cullis, Brian R, and Luff, M. F

Abstract

Body weight and traits associated with production of wool were measured over a 2-year period between 1985 and 1987 in south-western New South Wales in a flock of Merino wethers experimentally infected with footrot. The disease was allowed to spread freely amongst 150 of the flock but kept at very low prevalence in the remaining 50 by preventive footbathing during transmission periods. Severe, underrunning footrot had a significant adverse effect on body weight, for each year of the trial. Body weight was most severely reduced at times of the year when footrot was spreading among animals and lesions were severe. The mean body weight of the infected group at the end of the 2 years of observation was 7.3 kg (11.6%) below that of the control group. Footrot also depressed wool growth, with the mean clean fleece weight of the infected group being 0.4 kg (8%) lighter than that of the controls at each of the 2 annual shearings. There were no consistent differences between the groups for the other wool characteristics measured.

Published
1991

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