101,766 research outputs found

    Monitoring and classification of lakes in Finland

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    In Finland, as in other member countries of the European Union, preparations for implementing the EC Water Framework Directive (WFD) have begun. The article describes the current monitoring and classification strategies for Finnish Lakes

    Hubungan Kebiasaan Menonton Tayangan Action Di Televisi Terhadap Perilaku Agresif Dan Prestasi Belajar Pada Anak Laki-Laki Usia Sekolah Di Sukodadi Palembang

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    Background: Aggressive behavior is the behavior of the individual with the aim of injuring or injuring other individuals both physically and verbally, while the learning achievement is the result of interaction in the individual against various factors that affect both internal and external. Based on the preliminary results of 5 children expressed likes a kind of action film and 3 of them perform aggressive actions such as fighting, shouting and talking roughly and found 3 children who have less report cards. Purpose: This study aims to determine the relationship between watching action habits on television to aggressive behavior and learning achievement in school-age boys in Sukodadi. Method: This research method used analytic survey design with cross sectional approach. Sample study of all school age boys in Sukodadi as many as 45 people. Sampling using total sampling. Result: Positive aggressive behavior (55,6%), negative aggressive behavior (44,4%), learning achievement less (55,6%), learning achievement less (44,4%). The result of chi square statistic shows that there is a relationship between television action on aggressive behavior (p = 0,001) and learning achievement (p = 0,001). Conclusion: There is a relationship between the habit of watching action impressions against aggressive behavior, there is a relationship between the action and the learning achievement. Suggestion: Based on the results of the research, it is expected that parents can supervise, assist, and limit the hours of children watching and selecting the appropriate impressions with the age of the child, the next researcher in order to add other variables besides action such as child abuse, bulliying

    Global dynamics of the chemostat with variable yields

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    In this paper, we consider a competition model between nn species in a chemostat including both monotone and non-monotone response functions, distinct removal rates and variable yields. We show that only the species with the lowest break-even concentration survives, provided that additional technical conditions on the growth functions and yields are satisfied. LaSalle's extension theorem of the Lyapunov stability theory is the main tool.Comment: 7 page

    A Semi-analytic Formulation for Relativistic Blast Waves with a Long-lived Reverse Shock

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    This paper performs a semi-analytic study of relativistic blast waves in the context of gamma-ray bursts (GRBs). Although commonly used in a wide range of analytical and numerical studies, the equation of state (EOS) with a constant adiabatic index is a poor approximation for relativistic hydrodynamics. Adopting a more realistic EOS with a variable adiabatic index, we present a simple form of jump conditions for relativistic hydrodynamical shocks. Then we describe in detail our technique of modeling a very general class of GRB blast waves with a long-lived reverse shock. Our technique admits an arbitrary radial stratification of the ejecta and ambient medium. We use two different methods to find dynamics of the blast wave: (1) customary pressure balance across the blast wave and (2) the "mechanical model". Using a simple example model, we demonstrate that the two methods yield significantly different dynamical evolutions of the blast wave. We show that the pressure balance does not satisfy the energy conservation for an adiabatic blast wave while the mechanical model does. We also compare two sets of afterglow light curves obtained with the two different methods.Comment: 33 pages, 9 figures, published in Ap


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    The objectives of this research are (1) to describe the types of refusal expression, (2) to describe the strategies refusal expressions, and (3) to describe the functions of refusal expression in the conversations of the family characters in the Orphan movie. This research applied descriptive-qualitative and quantitative approach. The data were taken from the utterances spoken by the family characters in the Orphan movie. The source of the data was the conversations of the characters. The data were collected from the English subtitle of the movie by re-reading the English subtitle, noting the data and categorizing the data into the features. The trustworthiness was achieved by using credibility, dependability and conformability. The result of this research can be concluded as follows. Firstly, there are two types of refusal expression which occur in the movie, indirect refusal expression (avoidance, attempt to dissuade interlocutor, reason and explanation, statement of alternative, statement of principle, promise of future acceptance and acceptance that functions as refusal) and direct refusal expression (non-performative). Indirect refusal expression has the highest frequency in the occurrence in the family characters’ conversation especially avoidance strategy. It is used for avoiding a conflict from the interlocutor. Secondly, there are four strategies to employ refusal expression, namely, negative politeness (indicating reluctance, being indirectness, using question and using hedge), positive politeness (giving reason, seek agreement, promise, avoid disagreement and avoid reciprocity), bald on-record (on-record) and off record (giving hints). Negative politeness has the highest occurrence to employ refusal expression. Thirdly, there are three functions of refusal expression which occur in the movie, that is, request, suggestion and offer


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    Novel is a written long story which contains a complex lesson about human life. The readers can get a better view of things that happen in human life and human’ mind from the novel. The readers can find the description of human personality, so many characters of people and human behavior can be found in it. The novel which was analyzed by the writer tells about having prejudice toward other. Therefore the writer was interested in focusing her study on An Analysis of Elizabeth’s Prejudice to Mr. Darcy in Jane Austen’s Novel entitled “Pride and Prejudice”.\ud The objectives of this study were 1) to know Elizabeth’s prejudice to Mr. Darcy in Jane Austen’s novel “Pride and Prejudice”. 2) to find the reason of Elizabeth’s prejudice to Mr. Darcy in Jane Austen’s novel “Pride and Prejudice”. And 3) to analyze the effects of her prejudice toward herself.\ud The design of this study was descriptive research with the emphasis on the Elizabeth’s Prejudice to Mr. Darcy in the novel “Pride and Prejudice”. In collecting the data, the writer read and understood the novel, then chose the data dealing with the problems. After that, she selected the data which were related to the purposes of the study and rewrote all of the data which had been chosen and selected based on the original quotation in the novel.\ud The finding showed there were three negative prejudices that Elizabeth had to Mr. Darcy, namely Mr. Darcy was arrogant and cruel. He also saw someone from his or her economic status. Those negative prejudices had two reasons. The first reason is emotion because those prejudices derived from Elizabeth's dissatisfaction feeling and anger to Mr. Darcy's attitude. The second reason is social because its related to the different of social status between them. Then, prejudices belonged to Elizabeth toward Mr. Darcy brought two effects. Those were feeling embarrassed and feeling regret.\u


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    The ability to compose an argumentative text is important for ESL and EFL learners. In terms of the communicative nature of writing, cohesion is regarded as an essential textual component, not only to create organized text but also to the comprehensiveness of the text. Therefore, the use of cohesive devices is really important. Based on Halliday and Hasan Cohesion theory (1976)this study is intended to investigate the use of cohesive devices and also the relationship between the frequency of cohesive devices using and the quality of argumentative writing. An analysis of 30 students’ argumentative writing showed that the students were familiar with various cohesive devices and used them in their writing. Among the cohesive devices, reference had the largest percentage of the total number cohesive devices, followed by lexical devices and conjunction devices. Furthermore, it was found that there was no significant relationship between the number of cohesive devi ces used and the quality of writing. The findings of the study have some important implications for EFL writing teachers and learners
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