PENGARUH BAHAN DIELEKTRIK DALAM UNJUK KERJA WAVEGUIDE

Makalah ini menyajikan hasil studi pengukuran nilai Voltage Standing Wave Ratio (VSWR) dan power reflection factor (PRF) untuk berbagai jenis bahan dielektrik yang akan disisipkan pada saluran transmisi yang beroperasi di frekuensi 9 GH dan dibandingkan dengan saluran transmisi tanpa bahan dielektrik. Pengukuran dilakukan di laboratorium antena Politeknik Negeri Padang dengan menggunakan alat ukur penunjang komponen waveguide yang berfungsi menghasilkan nilai VSWR dan PRF sehingga didapatkan grafik gelombang berdiri dengan parameter tegangan dan jarak. Pengukuran dilakukan dengan menjadikan bahan dielektrik berbagai jenis dengan kondisi rangkaian terbuka. Pengukuran pertama dilakukan untuk bahan dielektrik jenis teflon berwarna putih diperoleh hasil VSWR sebesar 28,50 dengan PRF 86,90% sedangakan bahan dielektrik jenis plexiglass berwarna transparan nilai VSWR sebesar 12,39 PRF 72,35 % dan bahan dielektrik jenis PVC berwarna abu-abu VSWR 7,97 dengan PRF 60,39 %. Sedangkan untuk saluran transmisi tanpa bahan dielektrik ( tidak disisipi bahan dielektrik ) nilai VSWR 1,50 dengan PRF 4,01%

Attentional Bias to Body-Related Stimuli in Younger and Middle-Aged Females: The Role of Eating Disorders and Thin Ideal Priming

Research has shown individuals with an eating disorder selectively attend to stimuli related to their concerns, and this attentional component might be one way in which eating disorders are maintained. Research using a variant of the Stroop task has demonstrated that women with an eating disorder have a stronger Stroop interference effect for words related to body shape than controls. The conclusion is individuals with an eating disorder have an information processing bias for stimuli related to their disorder, and thus, slower responses. A main objective of this study was to investigate this effect in both younger and middle age females. In Experiment 1, younger and middle age females with an eating disorder were compared with females without an eating disorder. In Experiment 2, younger and middle age females who had been exposed to thin media images were compared with females exposed to control images. The predictions were reflected through the color naming of body related words in a variation of the Stroop task. Computer mouse tracking was used to examine processing in both experiments. I predicted participants with an eating disorder (Experiment 1) or those exposed to the thin ideal prime (Experiment 2) would be more distracted by the presence of body related words relative to the controls. In both experiments, the middle age participants took longer to complete the task than the younger participants. In Experiment 1, age differences interacted with the eating disorder, a new finding with important implications. The RT data from the priming manipulation in Experiment 2 suggested that the thin prime facilitated responses to the body related words, opposite from the predictions. However, when examining the raw trajectory data using mouse tracking, age differences and interactions with prime began to emerge. The results showed, when looking at the role of an eating disorder in Experiment 1, middle age females with an eating disorder exhibited large attentional deficits. In Experiment

Upaya Kepala Sekolah dalam Meningkatkan Kedisiplinan Guru

The purpose of this research is to describe the principal's effort in increasing discipline of teacher of Public Vocational High School in Tugumulyo. The research method was designed as descriptive method. The main source of data was the principal, vise of principal and teachers. The technique of collecting data were interview, observation, and documentations. The results ofanalisis show that the effort of principals in increasing discipline of teacher has the right to do, so that the result is discipline of teacher become quite satisfactory

The Effect of Priming a Thin Ideal on the Subsequent Perception of Conceptually Related Body Image Words

There is a substantial amount of empirical evidence in support of the claim that the thin ideal portrayed by the mass media leads to body image dissatisfaction. Furthermore, a disturbance in the perception of body image is an essential feature of eating disorders. The Stroop task has been adapted to provide a measure of selective processing for body image related words in eating disordered individuals. Building upon this previous work, the present study was designed to examine the effect of priming the thin ideal on the subsequent perception of body image related words in participants without an eating disorder. In both Experiments 1 and 2, half of the participants were primed by viewing slim female models, and half by viewing advertisements for gender-neutral shoes. In Experiment 1, all participants completed a Stroop task for three categories of stimuli: neutral words (BOOKS), shoe words (CLOGS), and body image words (THIGHS). It was hypothesized that the group primed with the thin ideal would exhibit delayed color-naming times for the body image words relative to the group primed with gender-neutral shoe ads. In Experiment 2, the eye-tracking paradigm was used to further investigate the hypothesized priming effect. In particular, this paradigm was chosen for its ability to provide fine-grained temporal information in order to examine how the predicted effect unfolds over time. It was hypothesized that participants primed by the thin ideal would spend more time fixating body image related distractor words relative to the group primed with gender-neutral shoe ads. The results demonstrate a pattern that is consistent with the predictions, but the analyses failed to reach significance. While the lack of findings is disappointing, it was encouraging to discover that the eye-tracking paradigm is a sound methodology for investigating information processing in studies with clinical implications. The results of this study encourage future research using the eye-tracking methodology for investigations of information-p

An Investigation into the Relationship between Mobility and Reading Comprehension of Junior High Pupils

This study investigated the relationship between mobility and achievement in reading comprehension. The cumulative records of 78 junior high students were reviewed to obtain the data needed. Intelligence test scores for the Otis-Lennon School Ability Test and the achievement subtest score in reading comprehension for the Stanford Achievement Test were obtained from those student records. The cumulative records yielded additional information regarding the types of schools attended (parochial versus public), the grade level at which the transfer occurred (grades 1-3 versus grades 4-8), and sex. A significant difference was found between the reading comprehension scores of mobile and non-mobile students. No difference was found between reading comprehension scores of mobile pupils and the types of schools attended or the grade level at which the transfers occurred. A significant relationship was found between reading comprehension scores of mobile pupils and IQ, but no relationship was found between reading comprehension scores and sex. This analysis led to the conclusion that in this testing population of junior high students, the non-mobile students scored higher in the reading comprehension area than those students who had one or more moves between schools. In addition, intelligence was positively related to reading comprehension

Structure of nearshore fish assemblages in relation to varying levels of habitat complexity

Thesis (M.S.) University of Alaska Fairbanks, 2007Complex kelp and rocky habitats can be beneficial to fishes, however, their use of these habitats is poorly understood in northern latitudes. This study examined nearshore kelp habitats to examine the potential effects of kelp density and substrate topography on nearshore fish communities in Kachemak Bay, Alaska. Fish were collected from multiple sand, understory kelp, and understory and canopy kelp sites, along with kelp and substrate complexity measurements. Standard Monitoring Units for the Recruitment of Fish (SMURFs), light traps, shrimp pots, and SCUBA visual surveys were all employed in these collections. Relative fish abundance and community composition varied temporally in all habitats. The dominant fish families were gadids, pleuronectids, hexagrammids, and sebastids. Habitat use differed significantly temporally and spatially in relation to size class. These differences were family specific. Community analysis of the dominant fish families showed that different habitat complexities supported distinct fish assemblages. Low complexity sand habitats were particularly important for juvenile pleuronectids in this region and complex nearshore kelp habitats may be essential fish habitat for juvenile Pacific cod. Although these high complexity nearshore environments may be challenging to sample, they support large fish assemblages and may be essential to a variety of fish families and species

Attentional Bias to Body-Related Stimuli in Younger and Middle-Aged Females: The Role of Eating Disorders and Thin Ideal Priming

Research has shown individuals with an eating disorder selectively attend to stimuli related to their concerns, and this attentional component might be one way in which eating disorders are maintained. Research using a variant of the Stroop task has demonstrated that women with an eating disorder have a stronger Stroop interference effect for words related to body shape than controls. The conclusion is individuals with an eating disorder have an information processing bias for stimuli related to their disorder, and thus, slower responses. A main objective of this study was to investigate this effect in both younger and middle age females. In Experiment 1, younger and middle age females with an eating disorder were compared with females without an eating disorder. In Experiment 2, younger and middle age females who had been exposed to thin media images were compared with females exposed to control images. The predictions were reflected through the color naming of body related words in a variation of the Stroop task. Computer mouse tracking was used to examine processing in both experiments. I predicted participants with an eating disorder (Experiment 1) or those exposed to the thin ideal prime (Experiment 2) would be more distracted by the presence of body related words relative to the controls. In both experiments, the middle age participants took longer to complete the task than the younger participants. In Experiment 1, age differences interacted with the eating disorder, a new finding with important implications. The RT data from the priming manipulation in Experiment 2 suggested that the thin prime facilitated responses to the body related words, opposite from the predictions. However, when examining the raw trajectory data using mouse tracking, age differences and interactions with prime began to emerge. The results showed, when looking at the role of an eating disorder in Experiment 1, middle age females with an eating disorder exhibited large attentional deficits. In Experiment

The laminar/turbulent transition in a sludge pipeline

Globally, wastewater treatment plants are under pressure to handle high concentration sludge in a sludge treatment line. Unawareness of the non-Newtonian behaviour of the thickened sludge has the potential to cause unexpected problems when the fluid behaviour changes from turbulent to laminar flow. In this study, sludge apparent viscosity was plotted as a function of total suspended solids concentration (TSS) and shear rate. Then, the transition velocity based on several predictive models in the literature was determined. This analysis provides a practical basis for the prediction of the pipe flow behaviour of thickened sludge in troubleshooting and engineering design

TEKNIK ESTIMASI DAN KOMPENSASI GERAK PADA VIDEO CODING FGS (Fine Granularity Scalability)

Motion estimation is a process to determine the movement of an object on video sequential. The movement of objects is known as motion vector. A motion vector indicates a shift point between the current frame with the reference frame. Of motion vector is obtained, it would seem that the movement of the dots between the observed frame. In this study using the algorithm block maching SAD (Sum of Absolute Different), the search process is done per pixel. To determine the quality of the movement of objects in each frame interpolation is obtained by calculating the PSNR value. PSNR values range from 35 to 40 dB. From the research conducted using the 90 frame interpolation obtained PSNR value decreases.   &nbsp