Hubungan Harga Diri Dengan Depresi Pada Mahasiswa Pengguna Media Sosial Ditinjau Dari Jenis Kelamin

Depression is a psychological disorder characterized by mood swings, withdrawal from the environment, and disturbances in one's activities. Depression often occurs in social media users. One of the factors that can cause depression is low self-esteem. This study aims to (1) examine the relationship between self- esteem and depression among students using social media, (2) examine the contribution of self-esteem to depression, (3) examine differences in depression among students using social media in terms of gender, (4) determine the level of self-esteem and depression in college students using social media. The population in this study are students at the Muhammadiyah University of Surakarta and actively use social media. The sample in this study were 401 students using a random sampling technique and a data collection tool using the Beck Depression Inventory and the Rosenberg Self-Esteem Scale. The results showed: (1) There is a negative relationship between self-esteem and depression in students who use social media as evidenced by the coefficient value (rxy) -0.664 sig. (2 tiled) 0.000 (p < 0.05). (2) Self-esteem affects depression in students who use social media by 44.1% which can be seen from R = 0.664. (3) There is no difference in depression between students who use social media in terms of gender as evidenced by the results of the t-test -0.987 with sig (2-tiled) = 0.324 (p > 0.05). (4). Students' self- esteem (10.5%) is low, (31.4%) is moderate, and (58.1%) is high. Meanwhile, the level of depression was (39.9%) normal, (20.2%) mild, (21.7%) moderate, and (18.2%) severe

Swift Observatory Space Simulation Testing

The Swift Observatory is a Middle-Class Explorer (MIDEX) mission that is a rapidly re-pointing spacecraft with immediate data distribution capability to the astronomical community. Its primary objectives are to characterize and determine the origin of Gamma Ray Bursts (GRBs) and to use the collected data on GRB phenomena in order to probe the universe and gain insight into the physics of black hole formation and early universe. The main components of the spacecraft are the Burst Alert Telescope (BAT), Ultraviolet and Optical Telescope (UVOT), X-Ray Telescope (XRT), and Optical Bench (OB) instruments coupled with the Swift spacecraft (S/C) bus. The Swift Observatory will be tested at the Space Environment Simulation (SES) chamber at the Goddard Space Flight Center from May to June 2004 in order to characterize its thermal behavior in a vacuum environment. In order to simulate the independent thermal zones required by the BAT, XRT, UVOT, and OB instruments, the spacecraft is mounted on a chariot structure capable of maintaining adiabatic interfaces and enclosed in a modified, four section MSX fixture in order to accommodate the strategic placement of seven cryopanels (on four circuits), four heater panels, and a radiation source burst simulator mechanism. There are additionally 55 heater circuits on the spacecraft. To mitigate possible migration of silicone contaminants from BAT to the XRT and UVOT instruments, a contamination enclosure is to be fabricated around the BAT at the uppermost section of the MSX fixture. This paper discuses the test requirements and implemented thermal vacuum test configuration for the Swift Observatory

Clinicopathological features of the rare form of Creutzfeldt-Jakob disease in R208H-V129V PRNP carrier

Genetic transmissible spongiform encephalopathy (TSE) diseases are always associated with one of the more than 50 disease-associated point or insert mutations of the PrP gene (PRNP) [12] and represent approximately 10 to 20% of all forms of TSE diseases [9]. Each mutation is often associated with specific clinic-pathological phenotype [12] that are generally represented by Creutzfeldt-Jakob disease (CJD) [3, 8], Gerstmann–Sträussler–Scheinker disease or inherited prion protein cerebral amyloidoses [5], and fatal familial insomnia [4]. The methionine/valine polymorphism at codon 129 of PRNP plays also a role in determining the disease phenotype, especially when co-segregates with the pathogenic mutation [3]. Most PRNP mutations responsible for the CJD phenotype, including the R208H, are extremely rare and often there is no evidence of CJD in other family members. In particular, the R208H mutation co-segregates either with methionine or valine at codon 129 and it has been fully described in only 12 patients carrying M129 and 4 patients with V129 [8]. Here, we report clinical and neuropathological details of the fourth worldwide case of CJD carrying the rare R208H-129 Val PRNP genotype with a suggestive positive family history for dementia

Color discrimination is affected by modulation of luminance noise in pseudoisochromatic stimuli

Pseudoisochromatic stimuli have been widely used to evaluate color discrimination and to identify color vision deficits. Luminance noise is one of the stimulus parameters used to ensure that subject´s response is due to their ability to discriminate target stimulus from the background based solely on the hue between the colors that compose such stimuli. We studied the influence of contrast modulation of the stimulus luminance noise on threshold and reaction time color discrimination. We evaluated color discrimination thresholds using the Cambridge Color Test (CCT) at six different stimulus mean luminances. Each mean luminance condition was tested using two protocols: constant absolute difference between maximum and minimum luminance of the luminance noise (constant delta protocol, CDP), and constant contrast modulation of the luminance noise (constant contrast protocol, CCP). MacAdam ellipses were fitted to the color discrimination thresholds in the CIE 1976 color space to quantify the color discrimination ellipses at threshold level. The same CDP and CCP protocols were applied in the experiment measuring RTs at three levels of stimulus mean luminance. The color threshold measurements show that for the CDP, ellipse areas decreased as a function of the mean luminance and they were significantly larger at the two lowest mean luminances, 10 cd/m2 and 13 cd/m2, compared to the highest one, 25 cd/m2. For the CCP, the ellipses areas also decreased as a function of the mean luminance, but there was no significant difference between ellipses areas estimated at six stimulus mean luminances. The exponent of the decrease of ellipse areas as a function of stimulus mean luminance was steeper in the CDP than CCP. Further, reaction time increased linearly with the reciprocal of the length of the chromatic vectors varying along the four chromatic half-axes. It decreased as a function of stimulus mean luminance in the CDP but not in the CCP. The findings indicated that visual performance using pseudoisochromatic stimuli was dependent on the Weber´s contrast of the luminance noise. Low Weber´s contrast in the luminance noise is suggested to have a reduced effect on chromatic information and, hence, facilitate desegregation of the hue-defined target from the background.Fil: Cormenzana Méndez, Iñaki. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Laboratorio de Luminotecnia; ArgentinaFil: Martín, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Investigación en Luz, Ambiente y Visión. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Instituto de Investigación en Luz, Ambiente y Visión; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Laboratorio de Luminotecnia; ArgentinaFil: Charmichael, Teaire L.. Christian Brothers University; Estados UnidosFil: Jacob, Mellina M.. Universidade Federal do Pará; BrasilFil: Lacerda, Eliza M. C. B.. Universidade Federal do Pará; BrasilFil: Gomes, Bruno D.. Universidade Federal do Pará; BrasilFil: Fitzgerald, Malinda E. C.. Christian Brothers University; Estados Unidos. University of Tennessee; Estados UnidosFil: Ventura, Dora F.. Universidade de Sao Paulo; BrasilFil: Silveira, Luiz C. L.. Universidade do Ceuma; Brasil. Universidade Federal do Pará; BrasilFil: O´donell, Beatriz Maria. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Laboratorio de Luminotecnia; ArgentinaFil: Souza, Givago S.. Universidade Federal do Pará; Brasi

EFEKTIVITAS EDUKASI KOGNITIF ANTARA CERAMAH DANSHARING VIDEO VIA ANDROID TERHADAP TINGKATPENGETAHUAN PENCEGAHAN VERTIGO DI WILAYAH KERJAPUSKESMAS GAYAMSARI SEMARANG

Latar Belakang : Tingkat pengetahuan pada pencegahan vertigo masih rendahmaka dari itu diperlukan edukasi kepada masyarakat. Upaya yang dilakukan padapenelitian ini menggunakan upaya promotif yaitu edukasi, dalam penelitian inimenggunakan dua metode yaitu sharing video via android dan ceramah.Tujuan : Penelitian ini bertujuan untuk mengetahui efektivitas edukasi kognitifpencegahan vertigo menggunakan metode sharing video via android dan ceramah.Metode : Desain penelitian quasy experiment dengan menggunakan pre testposttest nonequivalent with control grup design. Variabel independen adalahedukasi kognitif berupa sharing video dan ceramah, variabel dependen adalahtingkat pengetahuan. Sampel sebanyak 54 orang yaitu responden yang mengikutikegiatan prolanis. Instrumen pengambilan data menggunakan kuesioner. Analisisini menggunakan Uji Wilcoxon untuk mengetahui perbedaan antara pengetahuansebelum dan sesudah. Untuk mengetahui efektivitas antara ke dua metode tersebutmenggunakan uji beda dua variabel tidak berpasangan yaitu Uji Mann-Whitney.Hasil : Hasil penelitian menggunakan Uji Wilcoxon menunjukkan ada perubahantingkat pengetahuan pada Grup A sebelum dan sesudah diberi perlakuandidapatkan sebesar 0,000 (p < 0,05), dan Uji Mann-Whitney sesudah diberiperlakuan metode sharing video lebih besar sebesar 32,98% daripada rata-ratametode ceramah 22,02% dengan nilai p = 0,008 (p < 0,05) sesudah diberiperlakuan menunjukkan ada perbedaan yang signifikan sesudah diberi perlakuanpada kedua kelompok.Kesimpulan dan Saran : Metode sharing video via android lebih efektifterhadap edukasi kognitif pencegahan vertigo pada anggota prolanis daripadametode ceramah. Metode sharing video via android ini dapat disebarluaskansebagai upaya promotif pencegahan vertigo pada masyarakat