Part of Speech Tagging Guidelines for Penn Korean Treebank

This document describes the Part-of-Speech (POS) tagging guidelines for the Penn Korean Treebank Project. The corpus used for this project consists of around 54,000 words and 5,000 sentences. This document starts with a summary of the tagset used in the Penn Korean Treebank, followed by a more detailed discussion of each tag with examples. Then pairs of tags that are easily confused with each other are discussed and guidelines on how to distinguish one from the other for a given base forms and inflections are presented. The document concludes with a list of specific problematic examples with guidelines on how to handle such cases

Photometric defocus observations of transiting extrasolar planets

We have carried out photometric follow-up observations of bright transiting extrasolar planets using the CbNUOJ 0.6m telescope. We have tested the possibility of obtaining high photometric precision by applying the telescope defocus technique allowing the use of several hundred seconds in exposure time for a single measurement. We demonstrate that this technique is capable of obtaining a root-mean-square scatter of order sub-millimagnitude over several hours for a V $\sim$ 10 host star typical for transiting planets detected from ground-based survey facilities. We compare our results with transit observations with the telescope operated in in-focus mode. High photometric precision is obtained due to the collection of a larger amount of photons resulting in a higher signal compared to other random and systematic noise sources. Accurate telescope tracking is likely to further contribute to lowering systematic noise by probing the same pixels on the CCD. Furthermore, a longer exposure time helps reducing the effect of scintillation noise which otherwise has a significant effect for small-aperture telescopes operated in in-focus mode. Finally we present the results of modelling four light-curves for which a root-mean-square scatter of 0.70 to 2.3 milli-magnitudes have been achieved.Comment: 12 pages, 11 figures, 5 tables. Submitted to Journal of Astronomy and Space Sciences (JASS

Measurement of Adhesion Energy of Electrospun Polymer Membranes Using a Shaft-loaded Blister Test

This study aims to examine the adhesion work of electrospun polymer nano- and micro-fibers. The adhesion energy at the interface of electrospun membrane and a rigid substrate is characterized by a shaft-loaded blister test (SLBT). By controlling the processing parameters, polyvinylidene fluoride (PVDF) fibrous membranes are prepared with fiber diameters ranging from 201 ± 86 nm to 2,724 ± 587 nm. The adhesion energy between electrospun membrane and rigid substrate increases from 8.1 ± 0.7 mJ/m2 to 258.8 ± 43.5 mJ/m2 by use of smaller fiber diameters. Adhesion energies between electrospun PVDF membranes and SiC substrates made of different grain sizes are evaluated. Fibrous membrane produces an adhesion energy as high as 420.1 ± 62.9 mJ/m2 in contact with SiC substrate with a 68 μm grit size. The SLBT methodology is extended to understand the adhesion energy between electrospun membranes. The increase in adhesion work is attributed to an increased area between fiber delaminated surfaces and surface asperities

Bracketing Guidelines for Penn Korean TreeBank

This document describes the syntactic bracketing guidelines for the Penn Korean Treebank, which is an online corpus of Korean texts annotated with morphological and syntactic information. The corpus consists of around 54,000 words and 5,000 sentences. The Treebank uses a phrase structure style of annotation, making head/phrasal node distinctions, argument/adjunct distinctions, and identifying empty arguments and traces for moved constituents. This document is organized as follows. In section 2, the basic syntactic ingredients of a clause structure are presented. Some notational conventions are introduced in section 3, including different types of syntactic tags, such as head level tags, phrase level tags and function tags used in the Treebank. In section 4, the bracketing guidelines for various types of clauses are discussed, including simple clauses, subordinate clauses, and clauses with coordination. Several types of subcategorizaion frames found in the Treebank are then presented in section 5, followed by bracketing guidelines for various linguistic phenomena in sections 6 to 21, including guidelines for annotating punctuation. The document ends with guidelines for handling some bracketing ambiguities and for handling some confusing examples

Posttraumatic stress on Chinese adolescents’ posttraumatic growth: The role of trauma centrality and emotion regulation

The current 6-month follow-up study investigated 1) the relationship between posttraumatic stress disorder (PTSD) at baseline (T1), trauma centrality and two types of cognitive emotion regulation (CER) at 3-month follow-up (T2), and psychiatric co-morbidity and posttraumatic growth (PTG) at 6-month follow-up (T3), 2) whether trauma centrality at T2 would mediate the impact of initial PTSD on psychiatric co-morbidity and PTG at T3, and 3) whether the two types of CER at T2 (i.e., adaptive CER and maladaptive CER) would respectively mediate the effect of initial PTSD on psychiatric co-morbidity and PTG at T3. Seven hundred and fifty-seven traumatized Chinese adolescents (Male = 400, Female = 357) from two secondary schools participated in the study and completed a demographic page, the Posttraumatic Stress Disorder Checklist for DSM-5, the Centrality of Events Scale, the Posttraumatic Growth Inventory, the General Health Questionnaire-28, the Cognitive Emotion Regulation Questionnaire, and the Educational Stress Scale for Adolescents. After controlling for demographic variables and academic stress, PTSD at baseline was positively associated with trauma centrality at T2, two types of CER at T2, and PTG at T3, but negatively related to psychiatric co-morbidity at T3. Trauma centrality at T2 did not mediate the impact of initial PTSD on psychiatric co-morbidity and PTG at T3. Both types of cognitive emotion regulation at T2 (i.e., adaptive CER and maladaptive CER) respectively mediated the effect of initial PTSD on PTG at T3 and but not that on psychiatric co-morbidity at T3. Following past trauma, Chinese adolescents might experience psychological distress as well as positive changes over time. These traumatic outcomes could be affected by adolescents’ thinking patterns about trauma, as opposed to by their concept of self. Adaptive thinking patterns promoted the positive effect of trauma onto personal growth, whereas the maladaptive patterns impaired the development of growth

Heterosexist events and psychological problems: internalized homophobia as a mediator and perceived parental support as a moderator

Introduction: Past research focusing on Western samples has demonstrated that heterosexist harassment, rejection, and discrimination (HHRD) were associated with psychological problems. How and when this relation would occur, however, remains unclear, especially for understudied Chinese sexual minorities. Method: A convenience sample of 1,453 Chinese lesbian, gay, and bisexual (LGB) individuals aged 18–50 participated in this study. They provided demographic information and completed measures of HHRD, internalised homophobia, perceived parental support for sexual orientation, anxiety, and depression. Structural equation modelling was conducted for data analyses. Results: Internalised homophobia partially accounted for the positive relation between HHRD and psychological problems (i.e. anxiety and depression). The indirect effect of HHRD on psychological problems through internalised homophobia was smaller when Chinese LGB persons had higher levels of perceived parental support for sexual orientation. Conclusions: Internalised homophobia might be an underlying mechanism for the relation between HHRD and psychological problems, and perceived parental support for sexual orientation may play a critical role in disrupting the pathway from HHRD to psychological problems through internalised homophobia

Network analysis on the relationship between posttraumatic stress disorder, psychiatric co-morbidity and posttraumatic growth among Chinese adolescents

Background This study investigated the association between posttraumatic stress disorder (PTSD), psychiatric co-morbidity and posttraumatic growth (PTG) among Chinese adolescents using network analysis. Methods 867 Chinese adolescents (male = 424, female = 443) were recruited from three secondary schools. They completed the Posttraumatic Stress Disorder Checklist for DSM-5, the Posttraumatic Growth Inventory, and the General Health Questionnaire-28. Results Domains of each construct mainly clustered within their respective communities with several bridging edges identified. The prominent roles of bridging nodes and edges (positive and negative) were highlighted. Key bridging nodes were negative alterations in cognitions and mood for PTSD, anxiety and insomnia for psychiatric co-morbidity and appreciation of life for PTG. Limitations The cross-sectional nature of the present study may preclude the identification of real causal relationships between nodes. Conclusions Following a trauma, adolescents displayed posttraumatic stress along with general psychological disorder symptoms. These distress reactions could affect the way they appreciated life and their motivation to seek future life possibilities. Findings from the current study may provide some clue for the facilitation of posttraumatic growth among clinical patients

Linking posttraumatic stress disorder with eating disorders among Emirati university female students: The role of self-concealment

The link between posttraumatic stress disorder (PTSD) from past trauma, eating disorders, and psychiatric co-morbidity has been established. Whether self-concealment could influence these distress outcomes among traumatised Emirati university female students remains unclear. This study aimed to investigate whether the co-existing profiles of PTSD and self-concealment could impact eating disorder and psychiatric co-morbidity among female Emirati students. Using a convenience sampling method, the research was made known to students studying at a university in the United Arab Emirates. Four hundred and twenty-one female students completed questionnaires measuring PTSD, self-concealment, eating attitudes, and psychiatric co-morbidity in class. Latent profile analysis and multivariate analysis of variance were used respectively to identify the profiles for students and examine the differences between profile groups in distress outcomes. 38% met the criteria for PTSD. Using Latent Profile Analysis, profile 1 (moderate PTSD and self-concealment with high avoidance) had moderate PTSD symptoms with a high level of avoidance, and a moderate level of self-concealment. Profile 2 (moderate PTSD and self-concealment with low avoidance) had moderate PTSD symptoms with a low level of avoidance, and a similar level of self-concealment to profile 1. Profiles 3 (low PTSD group) and 4 (high PTSD group) had the lowest and highest levels of PTSD symptoms and self-concealment, respectively. Profile 4 showed significantly higher eating disorder symptoms compared to profile 3, and higher levels of psychiatric co-morbidity than the other three profiles. Having PTSD with a tendency to hide self-related secret could increase eating disorder symptoms along with other psychological difficulties