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The performance and confidence in fault detection and diagnostic systems can be undermined by data pipelines that feature multiple compounding sources of uncertainty. These issues further inhibit the deployment of data-based analytics in industry, where variable data quality and lack of confidence in model outputs are already barriers to their adoption. The methodology proposed in this paper supports trustworthy data pipeline design and leverages knowledge gained from one fully-observed data pipeline to a similar, under-observed case. The transfer of uncertainties provides insight into uncertainty drivers without repeating the computational or cost overhead of fully redesigning the pipeline. A SHAP-based human-readable explainable AI (XAI) framework was used to rank and explain the impact of each choice in a data pipeline, allowing the decoupling of positive and negative performance drivers to facilitate the successful selection of highly-performing pipelines. This empirical approach is demonstrated in bearing fault classification case studies using well-understood open-source data.
Early adversity increases risk for child mental health difficulties. Stressors in the home environment (e.g., parental mental illness, household socioeconomic challenges) may be particularly impactful. Attending out-of-home childcare may buffer or magnify negative effects of such exposures. Using a longitudinal observational design, we leveraged data from the NIH Environmental influences on Child Health Outcomes Program to test whether number of hours in childcare, defined as 1) any type of nonparental care and 2) center-based care specifically, was associated with child mental health, including via buffering or magnifying associations between early exposure to psychosocial and socioeconomic risks (age 0–3 years) and later internalizing and externalizing symptoms (age 3–5.5 years), in a diverse sample of N = 2,024 parent–child dyads. In linear regression models, childcare participation was not associated with mental health outcomes, nor did we observe an impact of childcare attendance on associations between risk exposures and symptoms. Psychosocial and socioeconomic risks had interactive effects on internalizing and externalizing symptoms. Overall, the findings did not indicate that childcare attendance positively or negatively influenced child mental health and suggested that psychosocial and socioeconomic adversity may need to be considered as separate exposures to understand child mental health risk in early life.
Schistosoma species have traditionally been arranged in groups based on egg morphology, geographical origins, and the genus or family of snail intermediate host. One of these groups is the ‘S. indicum group’ comprising species from Asia that use pulmonate snails as intermediate hosts. DNA sequences were obtained from the four members of this group (S. indicum, S. spindale, S. nasale and S. incognitum) to provide information concerning their phylogenetic relationships with other Asian and African species and species groups. The sequences came from the second internal transcribed spacer (ITS2) of the ribosomal gene repeat, part of the 28S ribosomal RNA gene (28S), and part of the mitochondrial cytochrome c oxidase subunit 1 (CO1) gene. Tree analyses using both distance and parsimony methods showed the S. indicum group not to be monophyletic. Schistosoma indicum, S. spindale and S. nasale were clustered among African schistosomes, while S. incognitum was placed as sister to the African species (using ITS2 and 28S nucleotide sequences and CO1 amino acid sequences), or as sister to all other species of Schistosoma (CO1 nucleotide sequences). Based on the present molecular data, a scenario for the evolution of the S. indicum group is discussed.
The lung fluke, Paragonimus westermani (Kerbert, 1878), is widely distributed in Asia, and exhibits much variation in its biological properties. Previous phylogenetic studies using DNA sequences have demonstrated that samples from north-east Asia form a tight group distinct from samples from south Asia (Philippines, Thailand, Malaysia). Among countries from the latter region, considerable molecular diversity was observed. This was investigated further using additional DNA sequences (partial mitochondrial cytochrome c oxidase subunit 1 (COI) and the second internal transcribed spacer of the nuclear ribosomal gene repeat (ITS2)) from additional samples of P. westermani. Phylogenies inferred from these again found three or four groups within P. westermani, depending on the method of analysis. Populations of P. westermani from north-east Asia use snail hosts of the family Pleuroceridae and differ in other biological properties from populations in south Asia (that use snail hosts of the family Thiaridae). It is considered that the populations we sampled can be divided into two species, one in north-east Asia and the other in south Asia.
The status of the genera Euparagonimus Chen, 1963 and Pagumogonimus Chen, 1963 relative to Paragonimus Braun, 1899 was investigated using DNA sequences from the mitochondrial cytochrome c oxidase subunit I (CO1) gene (partial) and the nuclear ribosomal DNA second internal transcribed spacer (ITS2). In the phylogenetic trees constructed, the genus Pagumogonimus is clearly not monophyletic and therefore not a natural taxon. Indeed, the type species of Pagumogonimus,P. skrjabini from China, is very closely related to Paragonimusmiyazakii from Japan. The status of Euparagonimus is less obvious. Euparagonimus cenocopiosus lies distant from other lungflukes included in the analysis. It can be placed as sister to Paragonimus in some analyses and falls within the genus in others. A recently published morphological study placed E. cenocopiosus within the genus Paragonimus and probably this is where it should remain.
Mixed-layer clays composed of randomly interstratified kerolite/stevensite occur as lake and/or spring deposits of probable Pliocene and Pleistocene age in the Amargosa Desert of southern Nevada, U.S.A. The percentage of expandable layers of these clays, determined from computer-simulated X-ray diffractograms, ranges from almost 0 to about 80%. This range in expandabilities most likely results from differences in solution chemistry and/or temperature at the time of formation. An average structural formula for the purest clay (sample P-7), a clay with about 70% expandable layers, is:
Deposits of sepiolite, trioctahedral smectite (mixed-layer kerolite/stevensite), calcite, and dolomite, found in the Amargosa Flat and Ash Meadows areas of the Amargosa Desert were formed by precipitation from nonsaline solutions. This mode of origin is indicated by crystal growth patterns, by the low Al content for the deposits, and by the absence of volcanoclastic textures. Evidence for low salinity is found in the isotopic compositions for the minerals, in the lack of abundant soluble salts in the deposits, and in the crystal habits of the dolomite. In addition, calculations show that modern spring water in the area can precipitate sepiolite, dolomite, and calcite following only minor evaporative concentration and equilibration with atmospheric CO2. However, precipitation of mixed-layer kerolite/stevensite may require a more saline environment. Mineral precipitation probably occurred during a pluvial period in shallow lakes or swamps fed by spring water from Paleozoic carbonate aquifers.
In this chapter, we point out that private damage suits are not available to all victims of monopsonistic exploitation. In addition to the underpaid employees who have standing to sue, there are five groups that do not have standing: (1) employees who have been priced out of the market, (2) indirect suppliers of labor services, (3) umbrella employees, (4) suppliers of complementary inputs, and (5) buyers from the cartel.
This chapter deals with agreements among rivals not to hire one another’s employees. These agreements are known as “no-poaching” agreements and have been found in a number of labor markets. There have been numerous instances of employers agreeing to refrain from hiring one another’s employees. This, of course, depresses the demand for these employees and thereby puts a lid on compensation. In this chapter, we review some prominent cases involving (1) hardware and software engineers, (2) digital animators, (3) medical school faculty, (4) physical therapists, and (5) professional athletes.
For the most part, the suits filed by the Department of Justice have been resolved. Many of the private suits filed by the antitrust victims have been settled, but some are still pending. The chapter also explores the enforcement policies of the antitrust agencies which are provided in the Antitrust Guidance for Human Resource Professionals. We will also provide an extended analysis of no-poaching agreements in professional sports.
The exercise of monopsony in labor markets is limited to one degree or another by public policy. Employer conduct aimed at creating monopsony power is governed by the Sherman Act of 1890, which forbids collusion among employers as well as competitively unreasonable conduct by a single employer.
This chapter discusses private suits and the prohibition of §1 and the sanctions for violations. Corporations are subject to fines while individuals may be fined and/or imprisoned. Section 1 forbids collusive restraints of trade. In the past, there was some confusion regarding the applicability of §1 to labor markets. These days are gone. The Department of Justice and Federal Trade Commission have issued their Antitrust Guidance for Human Resource Professionals in which the agencies make it crystal clear that they will pursue criminal convictions for collusion in labor markets. In addition to public sanctions, §4 of the Clayton Act provides a private right of action for antitrust victims.
Mergers that involve issues of monopsony are addressed in this chapter. In some cases, a merger may be procompetitive or competitively neutral. In others, however, a merger may be anticompetitive and, therefore, should be barred. Horizontal mergers combine two (or more) firms that operate in the same output market. Since they employ similar workers, the merger may create monopsony power. Antitrust policy regarding horizontal mergers is provided by §7 of the Clayton Act and its judicial interpretation. Typically, the focus is on concentration in the output market, but there has been some recent recognition that a merger may have ill effects in the labor market. We examine this recent concern and provide some examples.
In this chapter, we turn our attention to labor unions and their role in providing countervailing power. Congress recognized the consequences of individual employees having to negotiate with large employers. For the most part, individual employees have no bargaining power and face all-or-nothing offers that reflect monopsony power. Consequently, Congress passed legislation that would permit employees to unionize and thereby create a labor monopoly. The idea was to level the playing field so workers could not be abused. This chapter provides a brief review of the statutes and the scope of the labor exemption.
The formation of a union converts a monopsony into a bilateral monopoly. The economic effects of a bilateral monopoly are generally positive. Employment and output expand. Thus, both employees and consumers are better off. We explain this analysis and illustrate it with reference to professional sports. This chapter also explores the antitrust conundrum arising from bilateral monopoly.
We provide an overview of the empirical results with ample references to the literature. There is a substantial body of research that establishes the pervasive presence of monopsony in labor markets. The root cause of monopsony power lies in the fact that labor markets are imperfect. In other words, labor supply functions are positively sloped, which allows the dominant employers to depress compensation by reducing employment. Moreover, there are various frictions that reduce an employee’s ability to respond to alternative employment opportunities. These include costs of job search, turnover, and mobility barriers.