814 research outputs found

    The effect of dynamic range compression on the psychoacoustic quality and loudness of commercial music

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    It is common practice for music productions to be mastered with the aim of increasing the perceived loudness for the listener, allowing one record to stand out from another by delivering an immediate impact and intensity. Since the advent of the Compact Disc in 1980, music has increased in RMS level by up to 20dB. This results in many commercial releases being compressed to a dynamic range of 2–3 dB. Initial findings of this study have determined that amplitude compression adversely affects the audio signal with the introduction of audible artifacts such as sudden gain changes, modulation of the noise floor and signal distortion, all of which appear to be related to the onset of listener fatigue. In this paper, the history and changes in trends with respect to dynamic range are discussed and findings will be presented and evaluated. Initial experimentation, and both the roadmap and challenges for further and wider research are also described and discussed. The key aim of this research is to quantify the effects (both positive and negative) of dynamic range manipulation on the audio signal and subsequent listener experience. A future goal of this study is to ultimately define recommended standards for the dynamic range levels of mastered music in a similar manner to those associated with the film industry

    Stigma, Social Comparison and Self-Esteem in Adults with an Intellectual Disability

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    Background: The paper examines the perception of stigma in 43 adults with an intellectual disability, the relationship this has with their psychological well-being and whether the process of social comparison has a moderating effect on this relationship. Materials and Methods: A questionnaire-based, within-participant design was used. Participants completed three self-report measures of perception of stigma, self-esteem and social comparison. Results: Perception of stigma was found to be significantly related to negative social comparisons, which in turn was significantly related to low self-esteem. No difference was found between social comparisons made with other service users and those made with people in the community. Social comparison was not found to have a moderating effect on the relationship between stigma and self-esteem. Conclusion: This study provides support for the influence of the perception of stigma and social comparison on the self-concept of individuals with an intellectual disability

    Corporate Social Responsibility in Professional Sports: Perceptions and Demographics

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    In America, businesses are looking for ways to truly connect with their customers and key publics. This concept is especially prevalent in sports organizations such as the National Football League (NFL), Major League Baseball (MLB), the National Basketball Association (NBA), and professional tennis. These leagues utilize corporate social responsibility (CSR) messaging to encourage engagement both in the stadium and at home, all the while trying to promote something everyone can enjoy. But, how effective is this messaging? Does utilizing these messaging strategies correlate with increased positive attitudes and greater engagement in sports? There has been some research done into the sociology of sports, which discusses why sports organizations are believed to carry so much weight. The purpose of this research is to determine if certain types of CSR messaging will resonate differently with various groups, which vary with respect to personality, psychographic disposition, or demographics. A survey was conducted where change in attitude about a sports team was measured. Respondents were asked a series of questions related to their engagement with sports. They were then shown a series of CSR promotions developed by the NFL. Upon seeing those promotions, they were asked the same survey questions. The goal was to determine if the CSR messaging influenced participants’ likelihood to watch the sports team. Business owners and social media professionals can benefit from this study because it gives them insight into consumer preferences and what types of messaging motivates consumers to continue engaging with a certain business or team. This knowledge could aid in guiding businesses decisions with respect to consumer engagement via CSR messaging. The methodology is a survey that will be sent to members of the student body, the faculty and the alumni who accepted to take part in the survey. The survey analyzes questions about social causes the participant feels close to, and then they are asked questions about their feelings toward the National Football League’s use of corporate social responsibility (CSR) messaging. They are then shown multiple examples of NFL messages featuring CSR initiatives, and they are asked to comment on them (their effectiveness, their likeability, etc.)

    Some aspects of the mathematical modelling of fixed bed chemical reactors

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    Altering world order: The alter-globalization movement and the World Trade Organization

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    This thesis analyses the relationship between the World Trade Organization (WTO) and the alter-globalization movement through the theoretical framework of Robert W. Cox. A Coxian perspective highlights that the WTO is a central international organization of the current nebuleuse, and one integral to enforcing, promoting and defending transnational corporate hegemony. The emergence of the protest movement inaccurately labelled the ‘anti-globalization movement’ can be described as a Coxian counter-hegemonic structure. From the plethora of protesters making up this ‘anti-globalization movement’ who dispute the legitimacy of the WTO, a distinct alter-globalization movement can be identified. It prescribes the alternative principles of public accountability, the rights of people and the protection of the environment as guides to reforming the WTO towards a Coxian ‘new multilateralism’. This thesis asks: to what extent has this alter-globalisation movement succeeded in altering the policies and processes of the WTO in accordance with these principles? In Coxian terms the questions of how far the campaign for ‘new multilateralism’ has successfully altered the hegemony of the current world order and avoided trasformismo are asserted. After illustrating corporate structural power within the WTO’s policies and procedures, the alter-globalisation movement is defined as an entity of overlapping social movements and Non-Governmental Organizations (Alter-NGOs). The thesis identifies and evaluates three strategies employed by the alter-globalisation movement to place its values at the heart of the WTO: demonstrations on the street; assisting developing states during negotiations; and submitting amicus briefs to the WTO’s Dispute Settlement Body (DSB). The obstacles presented by the WTO’s policy of trasformismo are then detailed, namely: political elites coopting the alter-globalization movement’s principles into their own rhetoric; the cooption of NGOs by political elites from the developing world, and the cooption of NGOs and the fierce rejection of any NGO influence within the WTO. In its conclusions the thesis details the manner in which trasformismo is a significant tool in the armoury of corporate hegemony for resisting reform, and thereby informs existing literature on the problems faced by all social movements and NGOs engaging with reforming the world order

    Halogenation effects in Intramolecular Furan Diels-Alder reactions:broad scope synthetic and computational studies

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    For the first time a comprehensive synthetic and computational study of the effect of halogen substitution on both furan and dienophile for the intramolecular Furan Diels-Alder (IMDAF) reaction has been undertaken. Contrary to our initial expectations, halogen substitution on the dienophile was found to have a significant effect, making the reactions slower and less thermodynamically favourable. However, careful choice of the site of furan halogenation could be used to overcome dienophile halogen substitution, leading to highly functionalised cycloadducts. These reactions are thought to be controlled by the interplay of three factors: positive charge stabilisation in the transition state and product, steric effects and a dipolar interaction term identified by high level calculations. Frontier orbital effects do not appear to make a major contribution in determining the viability of these reactions, which is consistent with our analysis of calculated transition state structural data

    A Life More Ordinary? Ten theses on a normalization of Germany's role in the EU

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    This paper presents a set of theses to argue that, two decades after German re-unification and the end of the Cold War, Germany is playing a changed role in the European Union. It argues that changes in the European Union, German domestic politics and in its bilateral diplomacy have resulted in the emergence of a normalized European policy. The paper explores the sources of these changes from enlargement, strains in the euro-zone and bilateral relations with France, through changed processes of policy-making to public opinion. Since Germany has played a leading role in the integration process, the paper‘s findings have wide implications for the future of the EU itself

    Recovery of the critically endangered river pipefish, Syngnathus watermeyeri, in the Kariega Estuary, Eastern Cape province

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    An intensive ichthyofaunal survey in the permanently open Kariega Estuary along the Eastern Cape coast has identified a breeding population of the critically endangered river pipefish, Syngnathus watermeyeri, within the middle and upper reaches of the system. This is the first recorded capture of this species in the estuary for over four decades. We suggest that the presence of S. watermeyeri is the result of the heavy rainfall within the region, which contributed to the establishment of optimum habitat requirements (mesohaline conditions and increased food availability) of the pipefish
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