Search results

The recent global COVID-19 pandemic has forced many institutions of higher education to place added consideration and focus on their virtual instruction, causing instructors to rethink their pedagogical approaches (Murphy, et al., 2020). While new pedagogical technologies are being introduced in higher education (Baker, et al. 2008), not all approaches have produced beneficial results (Heilesen, 2010). Could this new learning medium serve as an effective tool for student learning outcomes and comprehension of course concepts? The current study presents attempts to answer these questions through its exploration of student perceptions and impact of podcasting as an instructional tool within four undergraduate leadership courses. Through the use of podcasting as a means of supplemental content and assessment, these cases provide educators with foundational guidance and recommendations on how to most effectively implement different ways of podcasting into the classroom to achieve student learning outcomes. As we celebrate the 20th anniversary of JOLE and look ahead to the next twenty years, the authors suggest that one of the most important tasks for leadership educators will not only be to recognize opportunities presented by technological advances in teaching and learning (Gigliotti & Ruben, 2017), but also the use of these new technologies to meet the needs of a changed student population in a post-global pandemic world.

The purpose of this paper is to investigate the changes in posttraumatic stress disorder (PTSD) symptomatology during treatment in a drug and alcohol therapeutic community.

A repeated measures design was employed that looked at PTSD, depression, anxiety, and stress at a pre- and post-timepoint. A second sample was then evaluated at time of program completion to seven months post-treatment.

PTSD symptomatology significantly decreased in individuals who had undertaken treatment, and continued to decline post-treatment. This finding was irrespective of any PTSD-specific treatment.

PTSD specific treatment is not necessary to lower the symptomatology. Furthermore, this provides evidence that PTSD and substance use disorders are so highly intertwined that the comorbidity can almost be considered a single, diagnosis.

This is a partial replication of previous research which had not previously been replicated. This research also adds to the limited research which looks at PTSD from the perspective of drug and alcohol rehabilitation.

This study aims to present a new web page recommendation system that can help users to reduce navigational time on the internet.

The proposed design is based on the primacy effect of browsing behavior, that users prefer top ranking items in search results. This approach is intuitive and requires no training data at all.

A user study showed that users are more satisfied with the proposed search methods than with general search engines using hot keywords. Moreover, two performance measures confirmed that the proposed search methods out‐perform other metasearch and search engines.

The research has limitations and future work is planned along several directions. First, the search methods implemented are primarily based on the keyword match between the contents of web pages and the user query items. Using the semantic web to recommend concepts and items relevant to the user query might be very helpful in finding the exact contents that users want, particularly when the users do not have enough knowledge about the domains in which they are searching. Second, offering a mechanism that groups search results to improve the way search results are segmented and displayed also assists users to locate the contents they need. Finally, more user feedback is needed to fine‐tune the search parameters including α and β to improve the performance.

The proposed model can be used to improve the search performance of any search engine.

First, compared with the democratic voting procedure used by metasearch engines, search engine vector voting (SVV) enables a specific combination of search parameters, denoted as α and β, to be applied to a voted search engine, so that users can either narrow or expand their search results to meet their search preferences. Second, unlike page quality analysis, the hyperlink prediction (HLP) determines qualified pages by simply measuring their user behavior function (UBF) values, and thus takes less computing power. Finally, the advantages of HLP over statistical analysis are that it does not need training data, and it can target both multi‐site and site‐specific analysis.

A three-dimensional finite element (FE) model is developed to design a vibrating bimorph piezoelectric cantilever beam with lead zirconate titanate (PZT-5H) for energy harvesting. The paper aims to discuss these issues.

A parametric study of electric power generated as a function of the dielectric constant, transverse piezoelectric strain constant, length and thickness of the piezoelectric material, is conducted for a time-harmonic surface pressure load. Transversely isotropic elastic and piezoelectric properties are assigned to the bimorph layers with brass chosen as the substrate material in the three-dimensional FE model. Using design of experiments, a study was conducted to determine the sensitivity of power with respect to the geometric and material variables.

The numerical analysis shows that a uniform decrease in thickness and length coverage of the piezoelectric layers results in a nonlinear reduction in power amplitude, which suggests optimal values. The piezoelectric strain coefficient, d31 and the thickness of PZT-5H, tp, are the most important design parameters to generate high electric energy for bimorph vibration harvesting device.

The work demonstrates that, through a sensitivity analysis, the electro-mechanical piezoelectric coupling coefficient (d31) and the thickness of the piezoelectric strips (tp) are the most important parameters which have a significant effect on power harvested.

Purpose — Since a couple of years, we are confronted with the phenomenon of information overload. In particular, the web provides a rich source of a variety of information mainly in textual, i.e. unstructured form. Thus, web search faces new challenges that are how to make the user aware of the variety of content available and how to satisfy users best with such manifold content.

Methodology — This variety of content is considered as diversity, i.e. the reflection of a result set's coverage of multiple interpretations of a query. Diversification within web search aims on the one hand at adapting the ranking in a way that the top results are diverse. Increasingly important becomes on the other hand the organization and classification of content within diversification.

Findings — Various approaches to diversification are available or currently focus on research activities. They range from an adapted ranking by means of similarity measures or diversity scores to a comprehensive diversity analysis which determines topics and classifies text according to opinions etc.

Implications — Given the high diversity of web content, approaches for diversification are extremely important. Web search tries to address this problem from different perspectives. For the future, combination with image search result diversification is important. Further, benchmarks and standard data sets for evaluations need to be established to ensure comparability of results from various approaches.

Originality/value — This chapter provides an overview on diversity in web search from two directions: (a) Diversity is introduced with its notions and dimensions. (b) Methods to assess diversity within web search are presented.

Purpose — This chapter illustrates and explains the ambiguity and vagueness of the term social search and aims at describing and classifying the heterogeneous landscape of social search implementations on the WWW.

Methodology/approach — We have looked at different definitions as well as the context of social search by carrying out an extensive literature review, and tried to unify and enhance existing ideas and concepts. Our definition of social search is illustrated by a general review of existing social search engines, which are analyzed and described by their specific features and social aspects.

Findings — The chapter presents a discussion of social search as well as a comparison of existing social search engines.

Social implications — The definition of social search and the comparison of social search engines summarize the many ways people can search the web together and allow for an assessment of future developments in this area.

Originality/value of paper — Although different attempts to define social search have been made in the past, we present an argumentation that unifies some existing definitions and which is different from other interpretations of the social search concept. We present an overview and a comparison of the different genres of social search engines.

Research has shown mindfulness-based therapies to be an effective therapeutic intervention for a wide range of illnesses and disorders. However, little is known about how it may be helpful to individuals with addiction problems. The purpose of this paper is to evaluate by qualitative approach the impact of the newly introduced mindfulness-based relapse prevention programme (MBRP) programme on the TC to which it was introduced and to explore clients perception of and attitude to the programme. More specifically it aimed to examine how it may be helpful for individuals with substance abuse problems.

A qualitative approach was drew upon using both focus group methods and individual semi-structured interviews with clients of the TC to which it was introduced. Thematic analysis was performed on data collected.

Notwithstanding implementation issues, findings suggest MBRP to be a valuable and worthwhile programme with real perceived benefits.

Clients’ detoxing cited real perceived gains as a result of participating which has clear implications for a TC which offers methadone detoxification.

It is noted that MBRP research is in its infancy, and whilst a number of quantitative studies have been carried out, little qualitative research exists. If MBRP is to be considered an effective relapse prevention strategy, research must clarify the process underlying participant’s use of mindfulness in a drug-free setting.

The purpose of this paper is to present a case study of a programme aimed at raising standards of care and levels of professionalism in private, drug-free therapeutic communities (TCs) in Santa Catarina, Brazil.

The paper describes the Reviver intervention in detail and draws on subjective insights collected during its implementation.

Over 100 TCs applied to the Reviver project, of which 83 qualified to participate. The large majority of TCs were found to combine community-as-method, religious worship and abstinence in their treatment model.

The paper highlights the significant role religious organisations have in the treating substance dependency in Brazil and raises ethical and practical questions regarding the incorporation of religious TCs into mainstream public mental health provision.

The paper outlines the qualification process, control systems and monitoring procedures employed by the Reviver project.

The paper attends to the gap in English language publications regarding TCs in Brazil and raises important questions regarding the role of religion, faith and spirituality in the treatment of substance dependency.

Even though there is much information available with regard to the development of the therapeutic community (TC) for addictions in Europe, little is known about the particular situation in Denmark.The paper aims to discuss this issue.

In order to address this dearth, the methodology of the following historical account is largely based on an interview and personal contacts with Hanne Holm Hage-Ali, current director of TC Opbygningsgården and star witness of the development of TC in Denmark.

In 1971, the Freetown “Christiania”, Copenhagen, where TC Opbygningsgården started up, was based on communal, anarchic and hippie ideas and values. In the beginning, TC Opbygningsgården was not well accepted by TC pioneers promoting the classic hierarchical TC, as it was seen as a social experiment with anti-authoritarian roots. Later, in its turn, it became influenced by TCs Veksthuset and Phoenix House Haga, Norway, which were part of the common European TC movement. At this moment, TC Opbygningsgården functions as a well-accepted member of the European Federation of Therapeutic Communities.

The interview revealed information that it is line with current trends in and challenges for TC throughout Europe, as outlined in a recent EMCDDA study: TC in Europe can be considered as “children of the late sixties”; TCs are embedded in the anti-psychiatric movement, existentialism and the promotion of alternative community living; European TC leaders had different origins and professional background; and the TC never belonged to one religion or ideology. The common human value system always transcended the different visions.

This paper aims at addressing the dearth in knowledge on the development of TCs in Denmark.

To analyze networks of social interactions between the residents of a therapeutic community (TC) for women and the way, in which such interactions predict the discussion of issues that arise in treatment.

In total, 50 residents of a corrections-based TC for women were surveyed on the peers with whom they socialized informally, shared meals, shared letters from home and discussed issues that arose in treatment over a 12 h period. The data were analyzed using exponential random graph models (ERGM).

Reciprocity occurred in all networks while transitivity (a tendency of two residents who are connected to both connect to a third peer) occurred in all networks measuring informal social interactions. When controlling for reciprocity and transitivity, residents avoided spending social time or sharing meals with the same peers. There was no evidence of homophily by race, age or years of education. Homophily by entrance time and case manager occurred in social time. Case manager homophily occurred in the discussion of treatment issues but disappeared when controlling for social time and sharing letters from home.

Social networks in this TC arise from factors endogenous to the TC itself. It should be possible to determine the characteristics of optimal social networks in TCs. External validity is limited.

It should be possible to intervene to optimize the social networks of TC residents.

This is the first ERGM analysis of both informal and formal interactions in a TC.