866 resultados para One parameter family


Relevância:

30.00% 30.00%

Publicador:

Resumo:

Genomic selection (GS) has been used to compute genomic estimated breeding values (GEBV) of individuals; however, it has only been applied to animal and major plant crops due to high costs. Besides, breeding and selection is performed at the family level in some crops. We aimed to study the implementation of genome-wide family selection (GWFS) in two loblolly pine (Pinus taeda L.) populations: i) the breeding population CCLONES composed of 63 families (5-20 individuals per family), phenotyped for four traits (stem diameter, stem rust susceptibility, tree stiffness and lignin content) and genotyped using an Illumina Infinium assay with 4740 polymorphic SNPs, and ii) a simulated population that reproduced the same pedigree as CCLONES, 5000 polymorphic loci and two traits (oligogenic and polygenic). In both populations, phenotypic and genotypic data was pooled at the family level in silico. Phenotypes were averaged across replicates for all the individuals and allele frequency was computed for each SNP. Marker effects were estimated at the individual (GEBV) and family (GEFV) levels with Bayes-B using the package BGLR in R and models were validated using 10-fold cross validations. Predicted ability, computed by correlating phenotypes with GEBV and GEFV, was always higher for GEFV in both populations, even after standardizing GEFV predictions to be comparable to GEBV. Results revealed great potential for using GWFS in breeding programs that select families, such as most outbreeding forage species. A significant drop in genotyping costs as one sample per family is needed would allow the application of GWFS in minor crops.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Rather often we have to confront with the pessimistic views on the future of the family business. Contrary to these prognosis, the FB is not only present but also improving its position in the global economy and playing a key role in the European economy too. They represent 60 % of employment and more than 60 million jobs in the private sector. Among many internal challenges of FB in the five years’ time, the importance of the ‘company succession’ is increasing together with the renewing technology and ‘attracting the right sills/ talents’ (Global Family Survey, 2015). This article is focusing on the transfer of socio-economic wealth (SEW) as a key intangible asset within the intergenerational changes in the FB. The paper outlines the various concepts (narrow vs. broad) of the SEW and special attention is paid to the risk prone [taken] and risk adverse entrepreneurial attitudes. In this relation, the authors made distinction between the ‘opportunity’ and ‘necessity entrepreneurs’. Using empirical experiences based on multi-site company case studies in the three INSIST project countries, the various sub-sections are focusing on the transfer of the following key components of the SEW to the next generation: trust-based social-system, generic human values (i.e. openness, mutual respect, correctness, reliability, responsibility etc.) and ‘practice based – embedded collective knowledge’. Key lesson of this analysis is the following: transferring physical assets in the succession process seems to us less important than the transfer of the intangible one embedded in the company’s culture community. Further systematic national and international investigations – combining quantitative and qualitative research tools – are necessary to acquire more accurate picture on the impacts of transferring both intangible and tangible assets in the succession process in the FB.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The transfer of businesses contributes to the dynamics and the development of the economy in Austria. Successful transfers generate numerous positive impacts. Securing both employment and investment, creating new jobs and stimulating growth are some of these effects. Failed transfers can contribute to negative effects, including the loss of jobs and an economic slowdown. Over recent years the number of business handovers in Austria has been rising. The forecasts show that this number will remain high over the next few years. Between 2015 and 2024 more than 42,000 economically sound SMEs will face the challenge of finding an appropriate successor. This means that 26 % of all Austrian SMEs (excluding one-person businesses) and 29 % of all employees in these companies will be affected. The aim of this paper is to provide a multi-faceted discussion of the relevance of affective components in family business transfers. A “good” relationship between the successor and the departing owner fosters the success of a transfer. This relationship involves, among others, the willingness to share relevant information, openness and respect. The satisfaction (with the completed business transfer) is closely interrelated with the relationship between the successor and the departing owner. Consequently, we can assume that affective and emotional components can indeed shape the success of business transfers. Based on that, new future research opportunities are outlined.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Family businesses are special in many respects. By examining their financial characteristics one can come to unique conclusions/results. This paper explores the general characteristics of the financial behaviour of family businesses, presents the main findings of the INSIST project’s company case studies concerning financing issues and strategies, and intends to identify the financial characteristics of company succession. The whole existence of family businesses is characterized by a duality of the family and business dimensions and this remains the case in their financial affairs. The financial decisions in family businesses (especially SMEs) are affected by aspects involving a duality of goals rather than exclusively profitability, the simultaneous presence of family and business financial needs, and the preferential handling of family needs at the expense of business needs (although it has to be said that there is evidence of family investments being postponed for the sake of business, too. Family businesses, beyond their actual effectiveness, are guided by individual goals like securing living standards, ensuring workplaces for family members, stability of operation, preservation of the company’s good reputation, and keeping the company’s size at a level that the immediate family can control and manage. The INSIST project’s company case studies revealed some interesting traits of family business finances like the importance of financial support from the founder’s family during the establishment of the company, the use of bootstrapping techniques, the financial characteristics of succession, and the role of family members in financial management.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The study focuses on two features of family businesses (FBs), namely familiness and paternalism. These two concepts are inseparable in two ways: inseparable from family businesses and also from each other. Family businesses differ from one another in the degree of family involvement, leadership and management in the business. Paternalism as a leadership attitude is naturally present in FBs, especially in the founding stage of development. This feature provides the solid bases for establishing a strong and proud culture built around the personality and success of the founder. This characteristic however can become a major hindering factor upon succession. Through a review of the literature and the INSIST studies for Central Europe this study aims to identify the supportive and limiting factors of both phenomena and examine the case studies of the INSIST research project for signs of the existence of these supportive and limiting factors. It is found that the degree of familiness in these firms is a sliding scale and a lack of familiness is not a precursor for failure. Paternalism is found to be broken down into authoritarian, benevolent, moral and enlightened. After discovering studies claiming that paternalism is a stage in the process of leadership style changing from participative to autocratic (or vice versa) and that Central Europe and the current era of instability and uncertainty lead to employees preferring a more autocratic or paternalistic style, our findings suggest that there are more driving than restraining forces for family firms adopting a paternalistic style. Furthermore many cases appear to be on the path from an authoritative towards a more enlightened paternalistic leadership style either out of choice in the search to shake off the drawbacks of other types of paternalism or as part of a natural evolution of this particular leadership style within the context of this study.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Technological advances during the past 30 years have dramatically improved survival rates for children with life-threatening conditions (preterm births, congenital anomalies, disease, or injury) resulting in children with special health care needs (CSHCN), children who have or are at increased risk for a chronic physical, developmental, behavioral, or emotional condition and who require health and related services beyond that required by children generally. There are approximately 10.2 million of these children in the United States or one in five households with a child with special health care needs. Care for these children is limited to home care, medical day care (Prescribed Pediatric Extended Care; P-PEC) or a long term care (LTC) facility. There is very limited research examining health outcomes of CSHCN and their families. The purpose of this research was to compare the effects of home care settings, P-PEC settings, and LTC settings on child health and functioning, family health and function, and health care service use of families with CSHCN. Eighty four CSHCN ages 2 to 21 years having a medically fragile or complex medical condition that required continual monitoring were enrolled with their parents/guardians. Interviews were conducted monthly for five months using the PedsQL TM Generic Core Module for child health and functioning, PedsQL TM Family Impact Module for family health and functioning, and Access to Care from the NS-CSHCN survey for health care services. Descriptive statistics, chi square, and ANCOVA were conducted to determine differences across care settings. Children in the P-PEC settings had a highest health care quality of life (HRQL) overall including physical and psychosocial functioning. Parents/guardians with CSHCN in LTC had the highest HRQL including having time and energy for a social life and employment. Parents/guardians with CSHCN in home care settings had the poorest HRQL including physical and psychosocial functioning with cognitive difficulties, difficulties with worry, communication, and daily activities. They had the fewest hours of employment and the most hours providing direct care for their children. Overall health care service use was the same across the care settings.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Regulatory Focus Theory predicts that the motivation to self-regulate goal-directed thought and behavior depends on two distinct regulation strategies: a promotion focus based on attaining gains and a prevention focus based on avoiding losses. This study took a social-cognitive approach predicting that regulatory focus has an impact on how family startups (several family related founders) explore “new ideas”, exploit “old certainties” and achieve the balance of both (ambidexterity), compared to lone founder startups (only one founder present). It was proposed that the social context of family ties among founders leads them to a prevention focus concerned with avoiding the loss of the socio-emotional benefits of those ties. In order to avoid such a loss, family founders were expected to increase their risk perceptions and thus, explore less than lone founders, who lack such socio-emotional ties. It was also proposed that two commonly used psychological traits in entrepreneurship research --achievement motivation and internal locus of control, predispose entrepreneurs to a promotion focus. Founders with a promotion focus, in turn, were hypothesized to lead startups to more risk-seeking behaviors and to more explorative orientation. The previous argument was used as a springboard to derive hypotheses about ambidexterity (the ability to exploit and explore simultaneously) and survival hazards. Using Regulatory Focus Theory, exploitative orientation, conceptualized as the motivational strength to continue on previous paths of action, was hypothesized to be not significantly different from that of lone founder startups. Taking previous arguments together, lone founder startups were hypothesized to be more ambidextrous than family startups. Finally, ambidexterity and internal locus of control were hypothesized to reduce survival hazards in family startups. The findings suggested that family startups explore less than lone founder startups even after controlling for group effects. Interesting but contradictory findings revealed that internal locus of control have both a positive direct effect and a positive interaction that increases the explorative and ambidextrous orientation gap of family startups over lone founder startups. As expected, ambidexterity and internal locus of control reduced survival hazards on family startups. Implications for practitioners were derived based on a sample of 470 nascent entrepreneurs.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The calcitonin gene-related peptide (CGRP) family of G protein- coupled receptors (GPCRs) is formed through the association of the calcitonin receptor-like receptor (CLR) and one of three receptor activity-modifying proteins (RAMPs). Binding of one of the three peptide ligands, CGRP, adrenomedullin (AM), and intermedin/adrenomedullin 2 (AM2), is well known to result in aGαs-mediated increase in cAMP. Here we used modified yeast strains that couple receptor activation to cell growth, via chimeric yeast/Gα subunits, and HEK-293 cells to characterize the effect of different RAMP and ligand combinations on this pathway. We not only demonstrate functional couplings to both Gαs and Gαq but also identify a Gαi component to CLR signaling in both yeast and HEK-293 cells, which is absent in HEK-293S cells. We show that the CGRP family of receptors displays both ligand- and RAMPdependent signaling bias among the Gαs, Gαi, and Gαq/11 pathways. The results are discussed in the context of RAMP interactions probed through molecular modeling and molecular dynamics simulations of the RAMP-GPCR-G protein complexes. This study further highlights the importance of RAMPs to CLR pharmacology and to bias in general, as well as identifying the importance of choosing an appropriate model system for the study of GPCR pharmacology.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The human gut is host to a diversity of microorganisms including the single-celled microbial eukaryote Blastocystis. Although Blastocystis has a global distribution, there is dearth of information relating to its prevalence and diversity in many human populations. The mode of Blastocystis transmission to humans is also insufficiently characterised, however, it is speculated to vary between different populations. Here we investigated the incidence and genetic diversity of Blastocystis in a US population and also the possibility of Blastocystis human-human transmission between healthy individuals using family units (N = 50) living in Boulder, Colorado as our sample-set. Ten of the 139 (~ 7%) individuals in our dataset were positive for Blastocystis, nine of whom were adults and one individual belonging to the children/adolescents group. All positive cases were present in different family units. A number of different Blastocystis subtypes (species) were detected with no evidence of mixed infections. The prevalence of Blastocystis in this subset of the US population is comparatively low relative to other industrialised populations investigated to date; however, subtype diversity was largely consistent with that previously reported in studies of European populations. The distribution of Blastocystis within family units indicates that human-human transmission is unlikely to have occurred within families that participated in this study. It is not unexpected that given the world-wide variation in human living conditions and lifestyles between different populations, both the prevalence of Blastocystis and its mode of transmission to humans may vary considerably.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The purpose of this article is to investigate how ownership structure, especially family and/or venture-capital involvement, as well as entrepreneurial activities, defined as strategic change and renewal, help explain the involvement of independent members on boards of directors. The CEOs of 2,455 small and medium-sized, private enterprises from practically all industries were contacted in a telephone survey, resulting in an exceptionally high response rate. The findings reveal that family firms are more reluctant to involve independent directors on their boards than non-family firms that presence of venture capitalists increases the frequency of independent board members and that ownership has an impact on board roles. The results do not support the hypothesised relationship that independent directors enhance entrepreneurial activities. One implication of our study is that the often-argued-for strategic contribution of outsiders to the boards in family firms may be overemphasised. Another implication is that family firms that choose to acquire additional capital should be aware that this could result in a change in the board composition and the loss of control of the business. However, new and external owners’ inclusion on the board seems to be negotiable since there are also venture capitalists that do not insist on board representation.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The conceptual domain of agency theory is one of the dominant organisational theory perspectives applied in current family business research (Chrisman et al., 2010). According to agency theory (Jensen and Meckling, 1976), agency costs generally arise due to individuals’ selfinterest and decision making based on rational thinking and oriented toward own preferences. With more people involved in decision making, such as through the separation of ownership and management, agency costs occur due to different preferences and information asymmetries between the owner (principal) and the employed management (agent) (Jensen and Meckling, 1976). In other words, agents take decisions based on their individual preferences (for example, short term, financial gains) instead of the owners’ preferences (for example, long term, sustainable development).

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Fifty years have passed since Cyert and March’s 1963 A Behavioral Theory of the Firm. During this time, BTOF has been adopted across different research domains to investigate how organizations set goals, how they determine aspirations and how they finally react to performance aspiration discrepancies. Cyert and March’s framework has also recently emerged as one of the dominant paradigms to understand the ways in which family business organizations make decisions. In this chapter, I review the theoretical development and empirical results of BTOF and its application in the family business field of study in order to identify theoretical and empirical gaps and propose suggestions for future research. The conclusions suggest that BTOF is both a theoretically and empirically valid perspective in family business research, particularly when combined with other theoretical frameworks. The principal recommendation is to apply behavioral theory to enhance scholarly understanding of  how family organisations define their aspiration levels and respond to organizational problems. 

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Anaerobic digestion (AD) of wastewater is a very interesting option for waste valorization, energy production and environment protection. It is a complex, naturally occurring process that can take place inside bioreactors. The capability of predicting the operation of such bioreactors is important to optimize the design and the operation conditions of the reactors, which, in part, justifies the numerous AD models presently available. The existing AD models are not universal, have to be inferred from prior knowledge and rely on existing experimental data. Among the tasks involved in the process of developing a dynamical model for AD, the estimation of parameters is one of the most challenging. This paper presents the identifiability analysis of a nonlinear dynamical model for a batch reactor. Particular attention is given to the structural identifiability of the model, which considers the uniqueness of the estimated parameters. To perform this analysis, the GenSSI toolbox was used. The estimation of the model parameters is achieved with genetic algorithms (GA) which have already been used in the context of AD modelling, although not commonly. The paper discusses its advantages and disadvantages.