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Dispersant and surfactant additives, although used in minor amounts, exert a major influence in latex paints, controlling, for example, long‐term and freeze‐thaw stability in the can, application properties, and the opacity, gloss, and scrub resistance of the dry film. In such complicated multiphase systems, exact knowledge of the role played by these dispersants and surfactants and their distribution is vital to optimum formulation. For instance, the amount of dispersant required to ensure pigment deaggregation during ‘grinding’, and to ensure stability of the resultant mill base, has been one of the principal concerns of paint formulators. Several techniques to determine this have been reported‐i.e., Daniels Flow Point measurements in resin or dispersant solutions, or Brookfield viscosity measurements at various dispersant levels after dispersion, and titration of pigment with dispersant solutions with a Brabender Plastigraph‐type sigma blade mixer.

Water soluble vehicles based on unsaturated fatty acids and oils have been prepared which have gloss and are air‐drying. Resin blends have also been prepared to improve certain characteristics. Comparison of the prepared compositions regarding their evaluation as a paint vehicle has also been taken into consideration.

March 12, 1971 Compressed air work — Breach of statutory duty — Negligence — Caisson disease in form of bone necrosis — Causation — Faulty decompression procedure and equipment — Whether risk reasonably foreseeable by employers — The Work in Compressed Air Special Regulations, 1958 (SJ. 1958,No. 61),regs. 4(1), 6,8(1), 8(2) (a), 10(1) and 10(3).

This chapter analyzes a geographic quasi-experiment embedded in a cluster-randomized experiment in Honduras. In the experiment, average treatment effects of conditional cash transfers on school enrollment and child labor were large – especially in the poorest experimental blocks – and could be generalized to a policy-relevant population given the original sample selection criteria. In contrast, the geographic quasi-experiment yielded point estimates that, for two of three dependent variables, were attenuated. A judicious policy analyst without access to the experimental results might have provided misleading advice based on the magnitude of point estimates. We assessed two main explanations for the difference in point estimates, related to external and internal validity.

We study research designs where a binary treatment changes discontinuously at the border between administrative units such as states, counties, or municipalities, creating a treated and a control area. This type of geographically discontinuous treatment assignment can be analyzed in a standard regression discontinuity (RD) framework if the exact geographic location of each unit in the dataset is known. Such data, however, is often unavailable due to privacy considerations or measurement limitations. In the absence of geo-referenced individual-level data, two scenarios can arise depending on what kind of geographic information is available. If researchers have information about each observation’s location within aggregate but small geographic units, a modified RD framework can be applied, where the running variable is treated as discrete instead of continuous. If researchers lack this type of information and instead only have access to the location of units within coarse aggregate geographic units that are too large to be considered in an RD framework, the available coarse geographic information can be used to create a band or buffer around the border, only including in the analysis observations that fall within this band. We characterize each scenario, and also discuss several methodological challenges that are common to all research designs based on geographically discontinuous treatment assignments. We illustrate these issues with an original geographic application that studies the effect of introducing copayments for the use of the Children’s Health Insurance Program in the United States, focusing on the border between Illinois and Wisconsin.

This paper aims to explore team learning processes used by soccer players in a professional training context by focusing on their identification and evolution for 22 months.

A soccer team from a professional academy participated to this study based on six training sessions. Qualitative data on training sessions were collected. Data analysis followed four steps: reporting the game timeline and behaviours connected to each situation; coding verbal data by delineating meaningful units of activity; classifying meaningful units of activity according to team learning processes derived from previous studies; and providing a temporal graph representing occurrences of team learning processes at each training session.

Results showed that soccer players used 13 team learning processes during training sessions. Two processes are mainly mobilized to visualize the situation and to plan. A temporal graph was edited to represent processes evolve over training sessions. The latter illustrated a stability in team learning processes mobilization during the 22 months follow-up.

This study complete knowledges about team learning by providing a fine-grained understanding of how players learn in teams and how team learning processes evolve over time.

This paper can help practitioners who manage teams in high temporal pressure situations to design adapted training programs.

This exploratory study highlights that the team learning processes usually mobilized “off-field” could also be used by team members in high temporal pressure situations, “on-field”. This study offers an original longitudinal approach that fits with some recent calls for contribution about team activity and could benefit to other research fields.

If initial attempts to incorporate reusable multimedia into university teaching were characterised by the efforts of enthusiasts, the growth of the “Learning Object” economy in recent years requires a more strategic and systems‐based approach. While all reusable learning materials have a value, both financial and educational, multimedia in particular is expensive to produce. Systematic production (based on ISO 14915 standards (2002a, 2002b, 2003) and evaluation of fitness for purpose, are paramount. Human‐centred design (HCD) methodologies, based on the ISO 13407 standard (1999), are now well‐established for ensuring that investments in technology result in benefits, and in particular lay heavy emphasis on the frequent use of evaluation. This paper reviews literature in educational multimedia production, interaction design, HCD, and pedagogy, and summarises ongoing attempts to standardise a definition of reusable learning objects (RLOs), with multimedia learning objects (MLOs) as a specific example. We conclude that evaluation must be central to the production and deployment of MLOs. We report on experiences applying an existing framework for effective production of multimedia learning resources, and propose revisions to this framework to add effective evaluation mechanisms.

In the five years that have elapsed since Sloane reported on the changing patterns of working hours in Britain, the rate of change has increased and the pattern of change has become more complex. This paper sets out to update thinking about patterns of change, proposes a research model and poses a number of research issues. Since terminology can be confusing, we start with some definitions.

This paper aims to present issues of deterrence related to stalking.

The authors have combined recent mixed method research findings and existing general deterrence literature with their practitioner experiences of working with this population, to provide a novel viewpoint paper intending to influence advancements in knowledge in this area.

Recent qualitative research investigating the function of stalking in a small sample (see Wheatley et al., 2020a) noted the participants’ focus on the lack of deterrence. For example, participants described feeling emotionally stuck in their pursuits, experiencing poor access to help and support, being ignorant of the potential custodial consequences of their offending and even stating that imprisonment provided a harsh yet necessary moment of reality.

This novel discussion paper reviews these findings in relation to both the available research based on deterrence generally and deterrence related to stalking and the experience of working with stalking cases in clinical practice. This paper explores what we know about the motivations that underlie stalking behaviour and how that relates to the effectiveness of deterrence, including the role of traditional criminal justice approaches to this type of offending.