A course of study in number concepts to be taught in the Arlington kindergartens

Thesis (M.A.)--Boston University, 1948. This item was digitized by the Internet Archive

On the potential temperature in the abyssal Pacific Ocean

A new map of the potential temperature at the bottom of the Pacific Ocean has been prepared It allows a more detailed description of the abyssal flow than has been possible before. In addition to the generally northward flow of the Pacific Bottom Water, some evidence is presented for the manner of modification of the Bottom Water, by vertical mixing and geothermal heating, into Pacific Deep Water, which must return southward above the Bottom Water layer...

Physical, chemical and biological structure of a coastal eddy near Cape Mendocino

We sampled mesoscale physical, chemical and biological structure in the coastal region of northern California in May, 1987. The circulation was dominated by an equatorward-flowing coastal jet and by a set of mesoscale eddies. High-velocity flow in the core of the coastal jet was composed of low-salinity, low-nutrient water, Cyclonic coastal eddies were observed near Cape Mendocino and Pt. Arena. The Cape Mendocino eddy is examined in detail. This eddy is a common feature which was present both before and after the spring transition, suggesting a relatively weak coupling between the eddy and the local wind field.The coastal circulation strongly affected the chemical and biological structure of the region. The coastal jet and cyclonic eddy increased primary production and phytoplankton biomass by increasing the nutrient supply to the euphotic zone. The change in slope of density surfaces in association with high-velocity flow in the jet and eddy raised isopycnals carrying nutrients to the surface layer. The inshore edge of the coastal jet marked the boundary between rich coastal water and oligotrophic offshore water. Since the jet was not carrying nutrients in the surface layer, advection by this feature was not an important nutrient source for the coastal ocean. The cyclonic flow and secondary circulation associated with the eddy appeared to act as a nutrient pump which provided a continuing input of high nutrient, low chlorophyll water to the center of the eddy. This resulted in low chlorophyll in the eddy center, and high chlorophyll and a large excess in dissolved oxygen at its outer edge. The coupling between physical and biological structure in the study region differs from that described for systems dominated by wind-driven coastal upwelling

On the subduction of upwelled waters in the California Current

We use 20 years of hydrographic data from the California Cooperative Oceanic Fisheries Investigations (CalCOFI) program off southern California to search for water mass signatures of subducted upwelled waters. A search for secondary oxygen maxima in more than 6000 water column profiles identified 629 cases of deep oxygen inversions. The additional criteria of a minimum magnitude of the deep oxygen inversion and an accompanying reduction in dissolved nutrients identified 106 (∼17%) of these as subduction signatures. The physical and chemical characteristics of these water masses suggest that they had been photosynthetically modified in the euphotic zone, and perhaps ventilated at the surface, before being subducted and eventually advected downstream within the California Current. Surface waters with similar physical characteristics as the subduction signatures (∼8.5°C, S∼34.0 psu, σ∼26.4 kg m−3) were observed during the spring-summer upwelling period at a shore station upstream from the CalCOFI grid. Even with conservative search criteria and coarse spatial-temporal sampling, subduction signatures were observed in all seasons and in each year of the record. These results imply that the processes leading to the subduction, cross-shore transport, and downstream advection of upwelled water masses are common and persistent in the California Current. This has important implications for the transport of coastal waters, and resident planktonic organisms and organic carbon, out of the coastal euphotic zone, and provides a mechanism for frequent ventilation of the upper thermocline of the California Current

Constraint-bounded design search

The design process requires continual checking of the consistency of design choices against given sets of goals that have been fulfilled. Such a check is generally performed by comparing abstract representations of design goals with these of the sought real building objects (RBO) resulting from complex intellectual activities closely related to the designer's culture and to the environment in which he operates. In this chapter we define a possible formalization of such representations concerning the goals and the RBO that are usually considered in the architectural design process by our culture in our environment. The representation of design goals is performed by expressing their objective aspects (requirements) and by defining their allowable values (performance specifications). The resulting system of requirements defines the set of allowable solutions and infers an abstract representation of the sought building objects (BO) that consists of the set of characteristics (attributes and relations) which are considered relevant to represent the particular kind of RBO with respect to the consistency check with design goals. The values related to such characteristics define the performances of the RBO while their set establishes its behaviour. Generally speaking, there is no single real object corresponding to an abstract representation but the whole class of the RBO that are equivalent with respect to the values assumed by the considered characteristics. The more we increase the number of these, as well as their specifications, the smaller the class becomes until it coincides with a single real object - given that the assessed specifications be fully consistent. On the other hand, the corresponding representation evolves to the total prefiguration of the RBO. It is not therefore possible to completely define a BO representation in advance since this is inferred by the considered goals and is itself a result of the design process. What can only be established in advance is that any set of characteristics assumed to represent any RBO consists of hierarchic, topological, geometrical and functional relations among the parts of the object at any level of aggregation (from components to space units, to building units, to the whole building) that we define representation structure (RS). Consequently the RS may be thought as the elementary structures that, by superposition and interaction, set up the abstract representation that best fit with design goals

Individual differences limit predicting well-being and productivity using software repositories : a longitudinal industrial study

Reports of poor work well-being and fluctuating productivity in software engineering have been reported in both academic and popular sources. Understanding and predicting these issues through repository analysis might help manage software developers' well-being. Our objective is to link data from software repositories, that is commit activity, communication, expressed sentiments, and job events, with measures of well-being obtained with a daily experience sampling questionnaire. To achieve our objective, we studied a single software project team for eight months in the software industry. Additionally, we performed semi-structured interviews to explain our results. The acquired quantitative data are analyzed with generalized linear mixed-effects models with autocorrelation structure. We find that individual variance accounts for most of the R-2 values in models predicting developers' experienced well-being and productivity. In other words, using software repository variables to predict developers' well-being or productivity is challenging due to individual differences. Prediction models developed for each developer individually work better, with fixed effects R-2 value of up to 0.24. The semi-structured interviews give insights into the well-being of software developers and the benefits of chat interaction. Our study suggests that individualized prediction models are needed for well-being and productivity prediction in software development.Peer reviewe

Time takes space: selective effects of multitasking on concurrent spatial processing.

Many everyday activities require coordination and monitoring of complex relations of future goals and deadlines. Cognitive offloading may provide an efficient strategy for reducing control demands by representing future goals and deadlines as a pattern of spatial relations. We tested the hypothesis that multiple-task monitoring involves time-to-space transformational processes, and that these spatial effects are selective with greater demands on coordinate (metric) than categorical (nonmetric) spatial relation processing. Participants completed a multitasking session in which they monitored four series of deadlines, running on different time scales, while making concurrent coordinate or categorical spatial judgments. We expected and found that multitasking taxes concurrent coordinate, but not categorical, spatial processing. Furthermore, males showed a better multitasking performance than females. These findings provide novel experimental evidence for the hypothesis that efficient multitasking involves metric relational processing

Developing and piloting a self-assessment tool for medication review competence of practicing pharmacists based on nationally set competence criteria

Background New competence requirements have emerged for pharmacists as a result of changing societal needs towards more patient-centred practices. Today, medication review competence can be considered as basic pharmaceutical competence. Medication review specific competence criteria and tools for self-assessing the competence are essential in building competences and a shared understanding of medication reviews as a collaborative practice. The aim of this study was to develop and pilot a self-assessment tool for medication review competence among practicing pharmacists in Finland. Methods The development of the self-assessment tool was based on the national medication review competence criteria for pharmacists established in Finland in 2017 and piloting the tool among practicing pharmacists in a national online survey in October 2018. The pharmacists self-assessed their medication review competence with a five-point Likert scale ranging from 1 for "very poor/not at all" to 5 for "very good". Results The internal consistency of the self-assessment tool was high as the range of the competence areas' Cronbach's alpha was 0.953-0.973. The competence areas consisted of prescription review competence (20 items, Cronbach's alpha 0.953), additional statements for medication review competence (11 additional items, Cronbach's alpha 0.963) and medication review as a whole, including both the statements of prescription review and medication review competence (31 items, Cronbach's alpha 0.973). Competence items closely related to routine dispensing were most commonly self-estimated to be mastered by the practicing pharmacists who responded (n = 344), while the more clinical and patient-centred competence items had the lowest self-estimates. This indicates that the self-assessment tool works logically and differentiates pharmacists according to competence. The self-assessed medication review competence was at a very good or good level among more than half (55%) of the respondents (n = 344). Conclusion A self-assessment tool for medication review competence was developed and validated. The piloted self-assessment tool can be used for regular evaluation of practicing pharmacists' medication review competence which is becoming an increasingly important basis for their contribution to patient care and society.Peer reviewe

Community pharmacists' knowledge of COPD, and practices and perceptions of medication counseling of COPD patients

Background and purpose: COPD is one of the leading causes of morbidity and mortality worldwide. Although medication counseling interventions by pharmacists have been found to support the management of COPD, little is known about pharmacists' knowledge concerning COPD and regular practices and perceptions concerning medication counseling of COPD patients. The purpose of this study was to research these topics among Finnish community pharmacists. Materials and methods: In January 2017, an electronic survey was e-mailed to Finnish community pharmacies (n=741) via the Association of the Finnish Pharmacies. One pharmacist from each pharmacy, preferably a specialist in asthma, was invited to answer the survey. Results: Completed responses were received from 263 pharmacists (response rate =35%), of whom 196 pharmacists were specialists in asthma. Response rate among asthma pharmacists was 42%. Pharmacists were positive about their role in medication counseling and in support of the self-management of COPD patients. COPD-related knowledge was self-assessed as being good and was on a good level in respect of basic facts. However, almost half (46%) of the pharmacists did not know that COPD is considered a national public health issue, and similar to 50% of the pharmacists were not familiar with the current care guideline on COPD. Medication counseling was found to be more medicinal product-driven and less advisory concerning lifestyle changes such as smoking cessation and physical exercise. Conclusion: Although the pharmacists' knowledge of COPD was good on general topics, there were some gaps in their knowledge on the current care guideline and status of the disease. Pharmacists should more systematically individually target medication counseling according to patients' needs. In addition, lifestyle treatments, including smoking cessation and physical exercise, should be part of the medication counseling.Peer reviewe

Leaf cold acclimation and freezing injury in C3 and C4 grasses of the Mongolian Plateau

The scarcity of C4 plants in cool climates is usually attributed to their lower photosynthetic efficiency than C3 species at low temperatures. However, a lower freezing resistance may also decrease the competitive advantage of C4 plants by reducing canopy duration, especially in continental steppe grasslands, where a short, hot growing season is bracketed by frost events. This paper reports an experimental test of the hypothesis that cold acclimation is negligible in C4 grasses, leading to greater frost damage than in C3 species. The experiments exposed six C3 and three C4 Mongolian steppe grasses to 20 d chilling or control pre-treatments, followed by a high-light freezing event. Leaf resistance to freezing injury was independent of photosynthetic type. Three C3 species showed constitutive freezing resistance characterized by <20% leaf mortality, associated with high photosynthetic carbon fixation and electron transport rates and low leaf osmotic potential. One freezing-sensitive C4 species showed the expected pattern of chilling-induced damage to photosynthesis and >95% leaf mortality after the freezing event. However, three C3 and two C4 species displayed a cold acclimation response, showing significant decreases in osmotic potential and photosynthesis after exposure to chilling, and a 30–72% reduction of leaf freezing injury. This result suggested that down-regulation of osmotic potential may be involved in the cold acclimation process, and demonstrated that there is no inherent barrier to the development of cold acclimation in C4 species from this ecosystem. Cold acclimation via osmoregulation represents a previously undescribed mechanism to explain the persistence of C4 plants in cool climates