4,566 research outputs found
Planning greenway along the abandoned railway in Gwangju City, Korea: key components to successful greenway plan
The term greenway in Korea can identify in the word "green" a network only for pedestrians and non-motorized vehicles mobility. The attention should be focused on the possibility of using greenways as a part of a "slow" mobility plan. The greenway of Gwangju can be seen an example of an important change in the Korean urban and transport planning that can use networks for "slow" mobility as one of the most important element for a higher quality level of life. With these considerations in mind this study deals with planning greenways along abandoned rail lines for sustainable community in Gwangju city, Korea. This is aimed at suggesting policy strategies and future directions for constructing greenways along abandoned rail lines of 11km in Gwangju city, Korea. This paper consists of three main sections: concepts of greenways; rail system and transport problems in Gwangju; strategies and directions for constructing greenways in Gwangju. This paper is mainly based on a review of current research reports/papers and an analysis of secondary data.
Impact of Direct Income Payments on Productive Efficiency of Korean Rice Farms
This paper examines the impact of direct income payments on productive efficiency of Korean rice farms, using farm-level cross sectional data in 2006. For representation of efficiency and its determinants, this paper uses a model that estimates the deviations of farms from a translog distance function and the determinants of these deviations. This paper especially estimates a stochastic frontier production function to explain deviations from best-practice productivity with a two-part error term including statistical noise from measurement error and technical inefficiency arising from farms not reaching the production frontier boundary. The empirical evidence finds that farms that get a higher share of direct payments in farm revenue are less efficient than others. This inefficiency is reduced by increases in farm size. Another result indicates that farms received greater direct payments on aggregate are more efficient than other farms since fixed payment, one part of rice direct payment, is tied to the amount of a farm's cropland that has been enrolled in programs, as well as yield histories.direct income payments, productive efficiency, stochastic frontier production function, Korea, Agribusiness, Agricultural and Food Policy, Crop Production/Industries,
OPTIMAL REGRESSION MODEL FOR PREDICTING THE WINNING GAME AND CONTRIBUTING FACTORS IN ICE HOCKEY WORLD CHAMPIONSHIP
The purpose of this study was to present the statistical model to predict the winning of ice hockey game and determine the contributing factors for win in the world ice hockey championship. In order to find the optimal regression model for ice hockey, we compared two regression model (logistic and linear model) with the database of all games and the separate databases of top/bottom teams. The logistic regression model using the separate database was most accurately predicted the actual outcome of games. This model and database further revealed that goalkeeping and scoring efficiencies and the number of shots on goal were significantly contributing factors to win. In addition, the results for prediction analysis of winning rate for each team indicated that offensive skills were more important factors than defense power to increase winning rate for teams
S/W Fault-tolerant OFP System for UAVs based on Partition Computing
AbstractPartition computing of the new Integrated Modular Avionics architecture reduces the heavy cabling of traditional federated architecture. On the other hand, fault-tolerant Operational Flight Programs (OFP) for unmanned aerial vehicles have usually been implemented as primary-backup systems based on dual nodes. However, in the case of a small UAV, it is preferred to implement a S/W fault-tolerant system that runs primary and recovery systems together in a single flight control computer to reduce the payload. In this case, because the primary and backup must not interfere with each other in using CPU and memory, it is common to use virtualization-based partitions. In this paper, a new S/W fault-tolerant OFP based on the real-time-object partition, TMO.p, is presented to overcome the large overheads of virtualization approaches
Influences of Parental Attachment and Life Satisfaction on Social Tanning Behaviors among College Students
The goal of this study is to assess the effect of parental attachment and life satisfaction on social tanning behaviors. Due to the perceived attractiveness of tanned skin, body-tanning behavior via outdoor and indoor tanning bed use is increasingly popular. The evidence supporting appearance-motive tanning indicates that indoor UV tanning is highly motivated by social influences (Hillhouse, Turrisi, Holwiski, & McVeigh, 1999). Previous studies have identified the significance of social tanning (i.e., tanning with others) in that people define the self-concept in terms of groups with whom individuals associate (Rubin, Bukowski, & Parker, 2007). An in-depth analysis of factors influencing social tanning behavior is critical for the development of effective, yet novel interventions designed to reduce harmful tanning behaviors. Therefore, the specific questions are addressed as follows: âWhat influences do parental attachment and life satisfaction have on college studentsâ social tanning behavior?
Promoting young adolescentspothesis-development performance in a computer-supported and problem-based learning environment
In the study, young adolescentsâ hypothesis development in a computer-supported and
problem-based learning environment was examined in terms of two empirical studies.
The first study examined the effect of metacognitive scaffolds to strengthening
hypothesis development as well as the influence of hypothesis development in the
promotion of young adolescentsâ problem solving performance in an ill-structured
problem solving environment, Animal Investigator. Data was collected from sixth grade
students (N = 172). The findings of the study indicated that participants using
metacognitive scaffolds attained significantly higher hypothesis-development
performance. Results also revealed that the hypothesis-development performance
showed the predictive power of the solution development performance.
In the second study, the researcher examined three factors, motivation,
metacognition, and prior domain knowledge, as a predictor for childrenâs hypothesisdevelopment
performance in the problem-based learning environment. A hypothesized
model was evaluated using structural equation modeling, which is a statistical method of causal relationships. Data were collected from sixth grade students (N = 101) in
treatment groups. Two significant factors toward childrenâs hypothesis-development
performance in an ill-structured problem solving environment were determined: Prior
domain knowledge and metacognition.
Implications and limitations of the present study and issues including the
experimental design are discussed
Adverse childhood experiences and the associations with depression and anxiety in adolescents
Objectives There has been increasing attention to adverse childhood experiences (ACEs) among adolescents in the U.S because ACEs may result in severe mental health issues. Although associations between ACEs and mental health have been explored, research on how different types or combinations of ACEs render different impacts on adolescents is limited. Therefore, this study aims to (a) examine latent classes of ACEs among adolescents who have experienced at least one ACE and (b) investigate associations of each latent group of ACEs with mental health problems, depression and anxiety. Method Questionnaires on ACEs and depression/anxiety from the 2016 National Survey of Childrenâs Health (NSCH) were used, and a total of 11,437 adolescents aged 10â17 years were included in this study. For analyses, latent class analysis (LCA) was implemented to identify the number and types of classes, which are pertinent to represent the heterogenous combinations of ACEs. Moreover, chi-square tests and ordinal regression were performed to investigate the associations of class memberships within ACEs with depression/anxiety. Results The LCA found four class memberships within ACEs: Multiple High-Risk, Broken Family, Income Hardship, and Multiple Low-Risk. These classes displayed differences in depression/anxiety. For both pre-existing and current conditions of depression/anxiety, the most prominence has been found in the Multiple High-Risk, followed by the Multiple Low-Risk, the Broken Family, and the Income Hardship, in order. Conclusions These differences among the classes indicate that understanding of ACEs and interventions should be based on considering latent classes of ACEs
Phosphorylation of α-syntrophin is responsible for its subcellular localization and interaction with dystrophin in muscle cells
Syntrophin is a well-known adaptor protein that links intracellular proteins with the dystrophin-glycoprotein complex (DGC) at the sarcolemma. However, little is known about the underlying mechanism that regulates the intracellular localization of α-syntrophin and its interaction with dystrophin. In this study, we demonstrate that α-syntrophin phosphorylation determines its intracellular localization and interaction with dystrophin in muscle cells. α-Syntrophin, a predominant isoform in skeletal muscles, directly interacts with ion channels, enzymes, receptors, and DGC proteins. Despite α-syntrophin being a potential signaling molecule, most studies focus on its function as a dystrophin-associated protein. However, we previously reported that α-syntrophin has a variety of DGC-independent functions to modulate cell migration, differentiation, survival, and protein stability. According to the results of the in vitro phosphorylation assays using subcellular fractions, the phosphorylated α-syntrophin accumulated only at the plasma membrane, and this event occurred regardless of dystrophin expression. However, the α-syntrophin interacting with dystrophin at the membrane was not in a phosphorylated state. We also identified that protein kinase C (PKC) was involved in the phosphorylation of α-syntrophin, which restricted α-syntrophin to interact with dystrophin. In conclusion, we demonstrate that the phosphorylation of α-syntrophin by PKC regulates its intracellular localization and interaction with dystrophin
Phosphorylation of α-syntrophin is responsible for its subcellular localization and interaction with dystrophin in muscle cells
79-85Syntrophin is a well-known adaptor protein that links intracellular proteins with the dystrophin-glycoprotein complex (DGC) at the sarcolemma. However, little is known about the underlying mechanism that regulates the intracellular localization of α-syntrophin and its interaction with dystrophin. In this study, we demonstrate that α-syntrophin phosphorylation determines its intracellular localization and interaction with dystrophin in muscle cells. α-Syntrophin, a predominant isoform in skeletal muscles, directly interacts with ion channels, enzymes, receptors, and DGC proteins. Despite α-syntrophin being a potential signaling molecule, most studies focus on its function as a dystrophin-associated protein. However, we previously reported that α-syntrophin has a variety of DGC-independent functions to modulate cell migration, differentiation, survival, and protein stability. According to the results of the in vitro phosphorylation assays using subcellular fractions, the phosphorylated α-syntrophin accumulated only at the plasma membrane, and this event occurred regardless of dystrophin expression. However, the α-syntrophin interacting with dystrophin at the membrane was not in a phosphorylated state. We also identified that protein kinase C (PKC) was involved in the phosphorylation of α-syntrophin, which restricted α-syntrophin to interact with dystrophin. In conclusion, we demonstrate that the phosphorylation of α-syntrophin by PKC regulates its intracellular localization and interaction with dystrophin
Propensity to Undergo Cosmetic Surgery and Risky Body Modification among Indoor Tanning Bed Users: An Illustration from Female College Students
The goal of this research is to identify the motivation to undergo cosmetic surgery and to engage in specific types of risky body-modification behaviors that counteract the well-being of frequent tanning bed users. Individuals who engage in indoor tanning bed use are more likely to engage in risky, yet voluntary, body modification such as plastic surgery and risky weight management behaviors. These findings are in line with the previous research that body shape and weight concerns have been associated with frequent indoor tanning, perhaps due to individuals\u27 belief that a tanned appearance makes oneĂąâŹâąs body shape appear more attractive. Presently, tanning and plastic surgery are perceived by many as body modification behaviors. Given their apparent increase and interconnection, identification of the characteristics of people who engage in tanning and other risky body modification is important to develop the comprehensive understanding of body-tanners
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