Investigation on strength safety conservation of the roller coaster car support structures

In general, the long-term use of the support structure of roller coaster cars consisting of steel structures presents a safety problem with dynamic loading. In the past we have solved this problem in various ways. In this paper, after measuring and simulation using mobile acceleration sensors, motion simulation program ADAMS, and structural analysis program ANSYS, the support structure is considered as a system of connectivity, and the most suitable displacement and the optimal section of support structural brace to ensure the strength of the roller coaster car support structure is determined

Strategy and bias in comprehension of multiple texts: How do readers with topic beliefs use strategies when reading controversial documents?

Research on multiple text comprehension reveals key principles and elements of comprehension: readers' mental representation, cognitive text processing, and strategy use while reading multiple texts (Goldman, 2004; Rouet, 2006). However, many studies of multiple text comprehension fail to investigate the influence of reader bias. Grounded in both the literature on reading strategies and the social psychology literature on bias (e.g., Edwards & Smith, 1996), this study investigated how readers' topic beliefs influence comprehension strategies in relation to bias. The participants for this study were 15 undergraduate students, chosen as they represented three distinct topic beliefs related to the Israeli-Palestinian conflict. There were 5 pro-Israel, 5, pro-Palestine, and 5 neutral participants. While thinking-aloud, participants read two maps and five texts about Israeli settlements in the West Bank, and the ongoing Palestinian-Israeli conflict. The texts and maps were presented in the iMTC (internet-embedded Multiple-Text Comprehension measurement tool) environment (Kim & Cho, 2011). In addition, measures of participants' prior knowledge and topic beliefs were gathered, while their reading times and Internet searches were recorded by the iMTC. Participants' verbal reports were coded based on existing coding schemes for reading strategies (Goldman et al., 2012; Pressley & Afflerbach, 1995). Five families of strategy were determined: Considering text content, Acceptance and resistance, Monitoring, Evaluation, and Information need and search. The study has three major findings. First, initial belief differences between groups of different beliefs increased after reading, meaning that participants showed biased assimilation processing during reading. Second, the participants' biased processing was not detected in the three types of reading measures: reading times, reading orders, and Internet searches. Finally, the study found that participants with different topic beliefs showed different strategic patterns in relation to bias. In particular, acceptance and resistance distinguished the three participant groups' strategic processing. Participants accepted belief-consistent text information and resisted belief-inconsistent text information. In addition, three cases of participants' biased strategy use were qualitatively analyzed. The analyses demonstrated that participants' topic beliefs played a role in creating an interpretive framework that evaluated, accepted, or resisted information during reading. The findings, limitations, implications for future research and instructional practices are discussed

Effects of Dexmedetomidine on Serum Interleukin-6, Hemodynamic Stability, and Postoperative Pain Relief in Elderly Patients under Spinal Anesthesia

The beneficial effects of dexmedetomidine (DEX) have not been extensively investigated in elderly patients receiving spinal anesthesia. This study evaluated the effects of intravenous DEX infusion on stress and hemodynamic response, as well as on postoperative analgesia in elderly patients undergoing total knee arthroplasty (TKA). We randomly allocated 45 adult patients to 3 patient groups (n=15 each): uni-saline group patients underwent unilateral TKA with saline administration, uni-DEX group patients underwent unilateral TKA with DEX administration, and bilateral-DEX group patients underwent bilateral TKA with DEX administration. Serum interleukin-6 (IL-6) levels were significantly lower in the bilateral-DEX group than in the uni-saline group 6 and 24h postoperatively, and were negatively correlated with total DEX dosage 24h postoperatively. Bradycardia occurred more frequently in the uni-DEX and bilateral-DEX groups than in the uni-saline group. The total dose of required supplementary analgesics was significantly higher in the uni-saline group than in the uni-DEX and bilateral-DEX groups 6h postoperatively. The results indicate that perioperative intravenous DEX administration decreases postoperative serum IL-6 levels in patients undergoing bilateral TKA, and has a postoperative analgesic effect in patients undergoing unilateral or bilateral TKA

Percutaneous radiofrequency ablation: A novel treatment of facial venous malformation

We performed radiofrequency ablation to treat a symptomatic facial venous malformation of a 24-year-old woman under ultrasound scan-guidance. The 20.25-cm sized original facial venous malformation in her right cheek markedly reduced without any scar formation and was grossly not visible after 1 month of the procedure. In the 3-month follow-up magnetic resonance imaging, original venous malformation reduced in volume to 5.40 cm. Radiofrequency ablation may provide an alternative treatment for facial venous malformations

Stability of a Jensen type equation in the space of generalized functions

AbstractWe reformulate and solve the stability problem of a Jensen type functional equation3f(x+y+z3)+f(x)+f(y)+f(z)−2f(x+y2)−2f(y+z2)−2f(z+x2)=0, in the spaces of some generalized functions such as tempered distributions and Fourier hyperfunctions

A new species of torrent catfish, Liobagrus geumgangensis (Teleostei, Siluriformes, Amblycipitidae), from Korea

In a recent survey of populations of the Korean torrent catfish Liobagrus, a distinctive species was discovered from the Geum River and its tributaries flowing into the western coast of Korea, and here described as a new species, L. geumgangensis sp. nov. It is distinguishable from other congeners by a combination of the following characters: I, 8 pectoral fin-rays; 52–56 caudal-fin rays; a relatively short occiput to dorsal-fin origin distance (6.9–9.8% SL); a short pelvic-fin insertion to anal-fin origin distance (11.9–17.3% SL); a long dorsal-fin base (10.6–13.5% SL); 8–9 gill rakers; 5–8 serrations on the pectoral fin; the body and fins are dark yellow, the margins of the dorsal, anal, and caudal fins are dark brown, but the outermost rim is faintly yellow. Analysis of the cytb gene also confirmed that L. geumgangensis is a monophyletic lineage distinct from other congeners