241 research outputs found
The management of volunteers – what can human resources do? A review and research agenda
There is an increasing interest from scholars and practitioners in understanding how non-profit organizations can design and implement human resources (HR) practices to enhance desirable volunteer attitudes and behaviors. This paper presents a comprehensive overview of existing studies on the relationship between HR practices and volunteering outcomes. We use the ability-motivation-opportunity model (AMO) as a guiding framework to systematically integrate current knowledge on this topic. We identify gaps in existing research and offer detailed suggestions on how scholars can further enhance knowledge on how HR practices can lead to beneficial outcomes for both volunteers and non-profit organizations
Mechanical tuning of the evaporation rate of liquid on crossed fibers
We investigate experimentally the drying of a small volume of perfectly
wetting liquid on two crossed fibers. We characterize the drying dynamics for
the three liquid morphologies that are encountered in this geometry: drop,
column and a mixed morphology, in which a drop and a column coexist. For each
morphology, we rationalize our findings with theoretical models that capture
the drying kinetics. We find that the evaporation rate depends significantly on
the liquid morphology and that the drying of liquid column is faster than the
evaporation of the drop and the mixed morphology for a given liquid volume.
Finally, we illustrate that shearing a network of fibers reduces the angle
between them, changes the morphology towards the column state, and so enhances
the drying rate of a volatile liquid deposited on it
Impact of Controlling the Site Distribution of Al Atoms on Catalytic Properties in Ferrierite-Type Zeolites
Zeolites with the ferrierite (FER) topology are synthesized using a combination of tetramethylammonium
(TMA) cations with differently sized cyclic amines (pyrrolidine (Pyr), hexamethyleneimine (HMI), and 1,4-
diazabicyclo[2.2.2]octane (DAB)). Using these organic structure-directing agents (SDAs), low Si/Al ratios
and concentrated synthesis mixtures favor the crystallization of FER materials. Increasing the size of the
cyclic amine or decreasing the aluminum content leads to the crystallization of other phases or the creation
of excessive amounts of connectivity defects. TMA cations play a decisive role in the synthesis of the FER
materials, and their presence allows the use of HMI to synthesize FER. Proton MAS NMR is used to quantify
the accessibility of pyridine to acid sites in these FER samples, where it is found that the FER + HMI + TMA
sample contains only 27% acid sites in the 8-MR channels, whereas FER + Pyr and FER + Pyr + TMA
contain 89% and 84%, respectively. The constraint index (CI) test and the carbonylation of dimethyl ether
(DME) with carbon monoxide are used as probe reactions to evaluate how changes in the aluminum distribution
in these FER samples affect their catalytic behavior. Results show that the use of Pyr as an SDA results in
the selective population of acid sites in the 8-MR channels, whereas the use of HMI generates FER zeolites
with an increased concentration of acid sites in the 10-MR channels
Enhancing volunteer engagement to achieve desirable outcomes: what can non-profit employers do?
Abstract Engagement is a positive psychological state that is linked with a range of beneficial individual and organizational outcomes. However, the factors associated with volunteer engagement have rarely been examined. Data from 1064 volunteers of a wildlife charity in the United Kingdom revealed that both task- and emotion-oriented
organizational support were positively related to volunteer engagement, and volunteer engagement was positively related to volunteer happiness and perceived social worth and negatively related to intent to leave the voluntary organization.
Consistent with theory, engagement acted as a mediator between these factors. The implications for future research and the relevance of the findings for voluntary organizations are discussed
Educational archaeology and the practice of utopian pedagogy
This paper explores the idea, and some elements of the (potential) practice, of utopian pedagogy. It begins by outlining the general aims of ‘utopian pedagogy’ and notes the shift within contemporary writings away from the metaphor of the architect (armed with a utopian ‘blueprint’) towards that of the archaeologist. The ontological underpinnings of educational archaeology are discussed before attention turns to a critical examination of the pedagogical process of excavation. The key questions here are (to labour the metaphor) where to dig and how to identify a utopian find. The paper argues that, without a substantive normative vision to serve as a guide, utopian archaeology is conceptually flawed and practically ineffectual, romanticising an endlessly open process of exploration. The final section suggests that the fears associated with utopian architecture (authoritarian imposition, totalising closure) are misplaced and that drawing up a ‘blueprint’ should be the aim and responsibility of utopian pedagogy
A Brokering Framework for Assessing Legal Risks in Big Data and the Cloud
“Cloud computing” and “Big Data” are amongst the most hyped-up terms and buzzwords of the moment. After decades in which individuals and companies used to host their data and applications using their own IT infrastructure, the world has seen the stunning transformation of the Internet. Major shifts occurred when these infrastructures began to be outsourced to public Cloud providers to match commercial expectations. Storing, sharing and transferring data and databases over the Internet is convenient, yet legal risks cannot be eliminated. Legal risk is a fast-growing area of research and covers various aspects of law. Current studies and research on Cloud computing legal risk assessment have been, however, limited in scope and focused mainly on security and privacy aspects. There is little systematic research on the risks, threats and impact of the legal issues inherent to database rights and “ownership” rights of data. Database rights seem to be outdated and there is a significant gap in the scientific literature when it comes to the understanding of how to apply its provisions in the Big Data era. This means that we need a whole new framework for understanding, protecting and sharing data in the Cloud. The scheme we propose in this chapter is based on a risk assessment-brokering framework that works side by side with Service Level Agreements (SLAs). This proposed framework will provide better control for Cloud users and will go a long way to increase confidence and reinforce trust in Cloud computing transactions
Strike, occupy, transform! Students, subjectivity and struggle
This article uses student activism to explore the way in which activists are challenging the student as consumer model through a series of experiments that blend pedagogy and protest. Specifically, I suggest that Higher Education is increasingly becoming an arena of the postpolitical, and I argue that one of the ways this student-consumer subjectivity is being (re)produced is through a series of ‘depoliticisation machines’ operating within the university. This article goes on to claim that in order to counter this, some of those resisting the neoliberalisation of higher education have been creating political-pedagogical experiments that act as ‘repoliticisation machines’, and that these experiments countered student-consumer subjectification through the creation of new radical forms of subjectivity. This paper provides an example of this activity through the work of a group called the Really Open University and its experiments at blending, protest, pedagogy and propaganda
Epigenetic Activation of a Subset of mRNAs by eIF4E Explains Its Effects on Cell Proliferation
BACKGROUND: Translation deregulation is an important mechanism that causes aberrant cell growth, proliferation and survival. eIF4E, the mRNA 5′ cap-binding protein, plays a major role in translational control. To understand how eIF4E affects cell proliferation and survival, we studied mRNA targets that are translationally responsive to eIF4E. METHODOLOGY/PRINCIPAL FINDINGS: Microarray analysis of polysomal mRNA from an eIF4E-inducible NIH 3T3 cell line was performed. Inducible expression of eIF4E resulted in increased translation of defined sets of mRNAs. Many of the mRNAs are novel targets, including those that encode large- and small-subunit ribosomal proteins and cell growth-related factors. In addition, there was augmented translation of mRNAs encoding anti-apoptotic proteins, which conferred resistance to endoplasmic reticulum-mediated apoptosis. CONCLUSIONS/SIGNIFICANCE: Our results shed new light on the mechanisms by which eIF4E prevents apoptosis and transforms cells. Downregulation of eIF4E and its downstream targets is a potential therapeutic option for the development of novel anti-cancer drugs
Introduction
Why do parent\u2013child argumentative interactions matter? What is the reason for such an interest? This chapter provides the reasons that motivated the study of parent\u2013child argumentation with the aim to understand the function of this type of interactions. Focusing on the activity of family mealtime, in the first part, the chapter draws attention to the distinctive features of parent\u2013child conversations. A second section of the chapter is devoted to discussing whether and, eventually, when children have the competence to construct arguments and engage in argumentative discussions with the aim to convince their parents to change opinion. In the last part of the chapter, research questions and structure of the volume are presented
Subliminal influence on generosity
We experimentally subliminally prime subjects prior to charity donation decisions by showing words that have connotations of pro-social values for a very brief time (17ms). Our main fnding is that, compared to a baseline condition, the pro-social prime increases donations by approximately 10-17 percent among subjects with strong pro-social preferences (universalism values). We find a similar effect when interacting the prime with the Big 5 personality characteristic of agreeableness. We furthermore introduce a novel method for testing for priming, "subliminity". This method reveals that some subjects are capable of recognizing prime words, and the overall results are weaker when we control for this capacity
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