Bee and floral traits affect the characteristics of the vibrations experienced by flowers during buzz pollination

During buzz pollination, bees use their indirect flight muscles to produce vibrations that are transmitted to the flowers and result in pollen release. Although buzz pollination has been known for >100 years, we are still in the early stages of understanding how bee and floral characteristics affect the production and transmission of floral vibrations. Here, we analysed floral vibrations produced by four closely related bumblebee taxa (Bombus spp.) on two buzz-pollinated plants species (Solanum spp.). We measured floral vibrations transmitted to the flower to establish the extent to which the mechanical properties of floral vibrations depend on bee and plant characteristics. By comparing four bee taxa visiting the same plant species, we found that peak acceleration, root mean-squared acceleration (RMS) and frequency vary between bee taxa, but that neither bee size (intertegular distance) nor flower biomass (dry mass) affects peak acceleration, RMS or frequency. A comparison of floral vibrations of two bee taxa visiting flowers of two plant species showed that, while bee species affects peak acceleration, RMS and frequency, plant species only affects acceleration (peak acceleration and RMS), not frequency. When accounting for differences in the transmission of vibrations across the two types of flower, using a species-specific ‘coupling factor’, we found that RMS acceleration and peak displacement do not differ between plant species. This suggests that bees produce the same initial acceleration in different plants but that transmission of these vibrations through the flower is affected by floral characteristics

Dual-Phase Steels Modeling -A Strain Gradient Approach

Abstract To obtain the behaviour of dual-phase microstructures, a three-dimensional (3D) strain gradient finite element model has been developed. The effect of grain size on flow stress has been investigated in polycristalline dual-phase steels. A strong size-dependence of plastic deformation in the micron range is observed. To describe the work hardening process in polycrystalline materials, two models, a gradient-one-internal-variable model and a gradient-total dislocation density evolution model, constructed in the basis of the Kocks-Mecking model are proposed. Results demonstrate that more dislocations are stored in specimens with finer grains and that the total dislocation density is not a single function of strain. Ferrite and martensite individual mechanical behaviour calculated into the dual-phase composite structure are presented. The effect of plastic deformation gradients imposed by the microstructure is clearly observed. An attempt is made to determine the mathematical expressions which best describe the strain hardening behaviour of crystalline materials in uniaxial deformation

DHE Statewide OER Advisory Council: Course Marking Implementation

This panel will explore the Course Marking Implementation Guidelines that were developed by the Statewide OER Advisory Council for public higher education. The panel will be led by Dr. Robert Awkward who is the Assistant Commissioner for Academic Effectiveness at the Mass. Department of Higher Education and OER Statewide Coordinator. The panel includes faculty, staff, and administrators that will talk about their experience with course marking at their colleges. The Course Flagging Guidelines are important guidelines that help colleges and universities to flag OER courses in the state of Massachusetts. In this session, the panel will review the guidelines, look at the faculty perspective (why should they use OER in their classes), look at how colleges have implemented OER programs, and give advice on how to develop an OER plan. The panel will have a question and answer session at the end of the session.

Hållbart lärande åt alla. Hur bör skolan vara utformad för att alla individer ska kunna utveckla sina styrkor och bli aktivt deltagande samhällsmedborgare?

ABSTRAKTEkdahl, Ceit & Helleblad, Gosia (2010). Hållbart lärande åt alla. Hur bör skolan vara utformad för att alla individer ska kunna utveckla sina styrkor och bli aktivt deltagande samhällsmedborgare? (Sustainable learning for all. How should the educational system be designed in order to allow all individuals to develop their talents and strengths and in becoming actively participating citizens?). Skolutveckling och ledarskap, Specialpedagogik, Lärarutbildningen, Malmö högskola.I detta examensarbete har vi undersökt hur skolan skulle kunna utvecklas för att skapa ett hållbart lärande för alla individer, vilket innebär en utvecklingsprocess där all energiåtgång under skolgången syftar till människans positiva utveckling som individ, demokratisk, aktivt deltagande samhällsmedborgare och aktör på arbetsmarknaden. Med utgångspunkt i kunskapsfält innefattande forskning, deklarationer, undersökningar, politiska direktiv och sakkunnigas uttalanden genomförde vi en undersökning baserad på kvalitativa djupintervjuer med personer som vi ansåg representera olika utbildningar, arbetspositioner och socioekonomiska förhållanden. Undersökningen resulterade i uppfångade av ett utvecklingsområde som dagens skola skulle behöva genomgå för att alla individer ska kunna ges förutsättningar för ett hållbart lärande

Hållbart lärande åt alla. Hur bör skolan vara utformad för att alla individer ska kunna utveckla sina styrkor och bli aktivt deltagande samhällsmedborgare?

ABSTRAKT Ekdahl, Ceit & Helleblad, Gosia (2010). Hållbart lärande åt alla. Hur bör skolan vara utformad för att alla individer ska kunna utveckla sina styrkor och bli aktivt deltagande samhällsmedborgare? (Sustainable learning for all. How should the educational system be designed in order to allow all individuals to develop their talents and strengths and in becoming actively participating citizens?). Skolutveckling och ledarskap, Specialpedagogik, Lärarutbildningen, Malmö högskola. I detta examensarbete har vi undersökt hur skolan skulle kunna utvecklas för att skapa ett hållbart lärande för alla individer, vilket innebär en utvecklingsprocess där all energiåtgång under skolgången syftar till människans positiva utveckling som individ, demokratisk, aktivt deltagande samhällsmedborgare och aktör på arbetsmarknaden. Med utgångspunkt i kunskapsfält innefattande forskning, deklarationer, undersökningar, politiska direktiv och sakkunnigas uttalanden genomförde vi en undersökning baserad på kvalitativa djupintervjuer med personer som vi ansåg representera olika utbildningar, arbetspositioner och socioekonomiska förhållanden. Undersökningen resulterade i uppfångade av ett utvecklingsområde som dagens skola skulle behöva genomgå för att alla individer ska kunna ges förutsättningar för ett hållbart lärande

buzzdata_20181214

Dataset of recorded floral vibrations for: Arroyo-Correa, Beattie and Vallejo-Marin. Bee and floral traits affect the characteristics of the vibrations experienced by flowers during buzz-pollination

Multi-scale meta-governance strategies for addressing social inequality in resource dependent regions

Social inequality in resource‐dependent regions is a growing problem. Increasingly both state and private actors are acting as meta‐governors to address the issue. In this article, we focus on housing inequality as ‘the canary in the coalmine’ for broader social inequality. While affordable housing has been the subject of growing attention in urban scholarship, relatively few studies have considered the governance of affordable housing in rural regions. We report on a case analysis of affordable housing governance in the Gladstone‐Surat Region, a traditional agricultural area of Australia that has experienced a dramatic increase in housing inequality due to significant coal seam gas development in recent years. We show that networked arrangements for affordable housing delivery were the product of strategic policy structuring, resourcing, and hands‐off framing by the state government. Private meta‐governance was exercised only in relation to process management forms of meta‐governance, with private companies facilitating local ‘arenas’ for stakeholder discussion and connecting stakeholders in a synergistic manner. The dynamics of the case‐study examined demonstrate that meta‐governance in rural regions is not just about coordinating and mobilising horizontal (e.g., regional) cooperation, but about coalescing action within multiscale ‘exogenous’ networks and structures. These findings have important implications for future efforts to address social inequality in rural areas

Pedagogical Innovation to Establish Partnerships in Adolescent Health Promotion: Lessons From a Scottish Undergraduate Nursing Program

Nurses have an established and expanding role in health promotion in support of public health strategies to reduce health inequalities, refocus health care on prevention, and rebalance responsibility for health toward individuals. However, evidence suggests that nurses may be unclear about the content and lack the skills to conduct health promotion. Education has been identified as an important vehicle to increase nurses’ competence and confidence in health promotion, and health promotion is a required component of undergraduate nurse education in the United Kingdom. This article presents a pedagogical innovation that enabled undergraduate student nurses in Scotland to research and rehearse health promotion to raise adolescents’ awareness of risk-taking behaviors. Student nurses completed a 2-week group-work project to develop a resource (e.g., mobile app, poster, lesson plan) targeted toward an adolescent risk behavior (e.g., self-harm, unsafe sex, alcohol misuse). The project culminated with a public “marketplace” event where students showcased their resource and obtained professional, peer, and public feedback. Opportunities afforded by the national curriculum for high school pupils enabled partnerships in adolescent health promotion to be established through involvement of pupils from a local secondary school with an interest in health care careers. School pupils participated in focus groups where students “pitched” their resource and appraised students’ work at the marketplace. This article shares the design and delivery of this project to enable replication or adaptation by health educators elsewhere and offers reflections on perceived project outcomes from the perspective of student nurses, school pupils, and nursing faculty

User analysis report

ECP-2008-GEO-318007, eContentplu