Heterogeneous Income Profiles and Life-Cycle Bias in Intergenerational Mobility Estimation

Research on intergenerational income mobility is based on current income since data on lifetime income are typically not available for two generations. However, using snapshots of income over shorter periods causes a so-called life-cycle bias if the snapshots cannot mimic lifetime outcomes. Using uniquely long series of Swedish income data, we show that current empirical strategies do not eliminate such bias. We focus on the widely adopted generalized errors-in-variables model and find that the remaining bias is substantial (20% of the true elasticity from left-side measurement error at the most relevant age range). IV estimates suffer from even stronger life-cycle effects and do not provide an upper bound. Inconsistencies stem from the interaction of two factors: heterogeneity in income profiles cannot be fully accounted for, and idiosyncratic deviations from average profiles correlate with individual characteristics and family background. We discuss implications of our findings for other literatures that depend on measurement of long-run income and income dynamics.intergenerational mobility, intergenerational income elasticity, life-cycle bias, non-classical measurement error, generalized errors-in-variables model, heterogeneous income profiles

Untangling the hedge: Genetic diversity in clonally and sexually transmitted genomes of European wild roses, Rosa L.

While European wild roses are abundant and widely distributed, their morphological taxonomy is complicated and ambiguous. In particular, the polyploid Rosa section Caninae (dogroses) is characterised by its unusual meiosis, causing simultaneous clonal and sexual transmission of sub-genomes. This hemisexual reproduction, which often co-occurs with vegetative reproduction, defies the standard definition of species boundaries. We analysed seven highly polymorphic microsatellite loci, scored for over 2 600 Rosa samples of differing ploidy, collected across Europe within three independent research projects. Based on their morphology, these samples had been identified as belonging to 21 dogrose and five other native rose species. We quantified the degree of clonality within species and at individual sampling sites. We then compared the genetic structure within our data to current rose morpho-systematics and searched for hemisexually co-inherited sets of alleles at individual loci. We found considerably fewer copies of identical multi-locus genotypes in dogroses than in roses with regular meiosis, with some variation recorded among species. While clonality showed no detectable geographic pattern, some genotypes appeared to be more widespread. Microsatellite data confirmed the current classification of subsections, but they did not support most of the generally accepted dogrose microspecies. Under canina meiosis, we found co-inherited sets of alleles as expected, but could not distinguish between sexually and clonally inherited sub-genomes, with only some of the detected allele combinations being lineage-specific

Quantifying internal and external influences on Swedish farmers’ strategic choices and performance outcomes

The Swedish agricultural sector is undergoing a period of rationalization and structural change where farms have become fewer and larger. This has created a number of challenges for the remaining farms in terms of how to survive and prosper in the changing competitive landscape. This compilation thesis investigates how the external environment (competitive intensity), social environment (advisors and family) and internal environment (identity) influences farmers’ strategic choices related to strategic orientation and entrepreneurship as well as outcomes related to performance.Based on a sample of 388 randomly selected farmers, paper I revealed that as perceptions of competitive intensity increase, farmers tend to become more market and Lean production oriented, but not entrepreneurial oriented. Fittingly, those farms that adopted a more market or Lean production orientation experienced better overall performance than those who increased their entrepreneurial orientation.In paper II, a three-group between subject experimental design was conducted on 122 Swedish farm management students in order to investigate the influence of “cultural intolerance” on the advice given to a farmer considering different strategic options to develop their farm. As the subject’s cultural intolerance (as measured through their level of “Jante”) increased, their recommendations towards adopting entrepreneurship decreased.Paper III in this thesis used a survey of 269 Swedish farmers to measure social identity and the level of involvement of family members on the farm in order to predict strategic choices related to financial, social and environmental sustainability goals. Findings reveal that family influences sustainability goals, however this influence is limited to social sustainability goals, but not economic or environmental sustainability goals. The findings can be useful to understand farmer’s social justification to be in business.Finally, the kappa in this thesis employs a post-literature scoping review in order to reflect on the choices made in conceptualizing, operationalizing, and positioning the work in order to develop recommendations for future research

Leistung und Wettbewerb – Die Entwicklung des schwedischen Hochschul- und Forschungssystems seit 1945

This paper analyzes the Swedish system of higher education and research with respect to the allocation of research resources. The main findings are a considerable expansion of the system since the post war era as well as a strong trend towards decentralization during the last decades. The earlier visible hand of close governance has left power to an invisible hand of market governance. Also, methods of New Public Management have been introduced. Despite an increasing tendency for research evaluations in Sweden the link to funding has so far been weak, however. Even if resources for research to an increasing extent are allocated through short-term project grants rather than long-term block grants a clear tendency towards funding of fewer and larger programmes rather than many small projects can be observed

Recent Large-Scale Genotyping and Phenotyping of Plant Genetic Resources of Vegetatively Propagated Crops

Several recent national and international projects have focused on large-scale genotyping of plant genetic resources in vegetatively propagated crops like fruit and berries, potatoes and woody ornamentals. The primary goal is usually to identify true-to-type plant material, detect possible synonyms, and investigate genetic diversity and relatedness among accessions. A secondary goal may be to create sustainable databases that can be utilized in research and breeding for several years ahead. Commonly applied DNA markers (like microsatellite DNA and SNPs) and next-generation sequencing each have their pros and cons for these purposes. Methods for large-scale phenotyping have lagged behind, which is unfortunate since many commercially important traits (yield, growth habit, storability, and disease resistance) are difficult to score. Nevertheless, the analysis of gene action and development of robust DNA markers depends on environmentally controlled screening of very large sets of plant material. Although more time-consuming, co-operative projects with broad-scale data collection are likely to produce more reliable results. In this review, we will describe some of the approaches taken in genotyping and/or phenotyping projects concerning a wide variety of vegetatively propagated crops

The Systematics, Reproductive Biology, Biochemistry, and Breeding of Sea Buckthorn—A Review

Both the fruit flesh and seeds of sea buckthorn have multiple uses for medicinal and culinary purposes, including the valuable market for supplementary health foods. Bioactive compounds, such as essential amino acids, vitamins B, C, and E, carotenoids, polyphenols, ursolic acid, unsaturated fatty acids, and other active substances, are now being analyzed in detail for their medicinal properties. Domestication with commercial orchards and processing plants is undertaken in many countries, but there is a large need for improved plant material with high yield, tolerance to environmental stress, diseases, and pests, suitability for efficient harvesting methods, and high contents of compounds that have medicinal and/or culinary values. Applied breeding is based mainly on directed crosses between different subspecies of Hippophae rhamnoides. DNA markers have been applied to analyses of systematics and population genetics as well as for the discrimination of cultivars, but very few DNA markers have as yet been developed for use in selection and breeding. Several key genes in important metabolic pathways have, however, been identified, and four genomes have recently been sequenced

Trichoptera in Finnish biogeographical provinces

The sum of Trichoptera found in Finland is 208 species, after we here report both Crunoecia irrorata (Curtis, 1834) and Apatania stylata Navas, 1916 as new for the country. Out of the 21 biogeographical provinces there is now altogether 2520 finds, an increase of + 40.1% since the earlier paper dealing with the subject (Nybom 1960). Putting into a graph the latitude of the weighted geographical centre of a biogeographical province, and the sum of Trichopteran species found in it, and calculating a regression line, it comes up that in the north of Finland about 50 species less are found than in the south. In addition, when comparing the actual sums with this regression line, the three provinces with most incomplete investigation work are AI = Aland Islands, Oba = northern Ostrobothnia, southern part, and Ka = southern Karelia, in which the sum of finds are - 32%,- 21%, and - 19% below the regression line, respectively. Recently, the only determination key to Finnish caddisflies built up by the late J. Kyrki, Oulu University, was published in a book for fly fishers (Rinne et at. 1995)

Measurement error and rank correlations

This paper characterizes and proposes a method to correct for errors-in-variables biases in the estimation of rank correlation coefficients (Spearman’s ρ and Kendall’s τ ). We first investigate a set of sufficient conditions under which measurement errors bias the sample rank correlations toward zero. We then provide a feasible nonparametric bias-corrected estimator based on the technique of small error variance approximation. We assess its performance in simulations and an empirical application, using rich Swedish data to estimate intergenerational rank correlations in income. The method performs well in both cases, lowering the mean squared error by 50-85 percent already in moderately sized samples (n = 1, 000)

Antibiotics Uptake from Soil and Translocation in the Plants – Meta-analysis

Antibiotics reach agricultural soils via fertilization with manure and biosolids as well as irrigation withwastewater and have the potential to be taken up by growing crops. The fate of antibiotics in terms of uptakefrom soil to plants, as well as translocation from root to leaves, is determined by a combination of antibiotic’sphysio-chemical (e.g. speciation, lipophilicity), soil (e.g. organic carbon content, pH) and plant (e.g.transpiration rates) characteristics. In this meta-analysis, a literature search was executed to obtain an overview of antibiotic uptake to plants, with an aim to identify uptake and translocation patterns of different antibiotic classes. Overall, we found that higher uptake of tetracyclines to plant leaves was observed compared to sulfonamides. Differences were also observed in translocation within the plants, where tetracyclines were found in roots and leaves with close to equal concentrations, while the sulfonamides represented a tendency to accumulate to the root fraction. The antibiotic’s characteristics have a high influence on their fate, for example, the high water-solubility and uncharged speciation in typical agricultural soil pH ranges likely induces tetracycline uptake from soil and translocation in plant. Despite the advances in knowledge over the past decade, our meta-analysis indicated that the available research is focused on a limited number of analytes and antibiotic classes. Furthermore, fastgrowing plant species (e.g. spinach, lettuce, and radish) are overly represented in studies compared to crop species with higher significance for human food sources (e.g. corn, wheat, and potato), requiring more attention in future research