Combinatorial RNA Design: Designability and Structure-Approximating Algorithm

In this work, we consider the Combinatorial RNA Design problem, a minimal instance of the RNA design problem which aims at finding a sequence that admits a given target as its unique base pair maximizing structure. We provide complete characterizations for the structures that can be designed using restricted alphabets. Under a classic four-letter alphabet, we provide a complete characterization of designable structures without unpaired bases. When unpaired bases are allowed, we provide partial characterizations for classes of designable/undesignable structures, and show that the class of designable structures is closed under the stutter operation. Membership of a given structure to any of the classes can be tested in linear time and, for positive instances, a solution can be found in linear time. Finally, we consider a structure-approximating version of the problem that allows to extend bands (helices) and, assuming that the input structure avoids two motifs, we provide a linear-time algorithm that produces a designable structure with at most twice more base pairs than the input structure.Comment: CPM - 26th Annual Symposium on Combinatorial Pattern Matching, Jun 2015, Ischia Island, Italy. LNCS, 201

Delivering Occupation-Based Practice in Stroke Rehabilitation of Hospital Settings: Thai Occupational Therapists’ Experiences

Occupation-based practice (OBP) is central to the practice of occupational therapists where occupations or meaningful activities become the focus of the assessment, intervention, and outcomes measurement process. Although occupational therapists practising in Thailand claim that they engage in OBP, this claim warrants empirical investigation. This study aimed to investigate the experiences and perceptions of hospital-based occupational therapists of OBP within stroke rehabilitation. Utilizing a qualitative design, fourteen occupational therapists were recruited through purposive sampling. Data were collected through semi-structured interviews until data saturation was reached. Each interview was recorded and transcribed verbatim, and data were analyzed using thematic analysis. Five themes were identified (1) Perspective towards OBP, (2) OBP as professional value and cultural identity, (3) Implementing OBP for stroke rehabilitation in hospital settings, (4) Environmental factors of using OBP in stroke rehabilitation, and (5) OBP in the service management. Occupational therapists perceived that OBP is important for professional identity. Using OBP provides positive changes in stroke clients. This study provides evidence that will help implement OBP into occupational therapy in Thailand

Gauss-Bonnet-Chern theorem on moduli space

In this paper, we proved the Gauss-Bonnet-Chern theorem on moduli space of polarized Kahler manifolds. Using our results, we proved the rationality of the Chern-Weil forms (with respect to the Weil-Petersson metric) on CY moduli. As an application in physics, by the Ashok-Douglas theory, counting the number of flux compactifications of the type IIb string on a Calabi-Yau threefold is related to the integrations of various Chern-Weil forms. We proved that all these integrals are finite (and also rational).Comment: Final version, Journal ref adde

Psychometric testing of three Chinese online-related addictive behavior instruments among Hong Kong university students

Objective: To validate the Chinese version of the nine-item Internet Gaming Disorder Scales- Short Form (IGDS-SF9), Bergen Social Media Addiction Scale (BSMAS), and Smartphone Application-Based Addiction Scale (SABAS) among Hong Kong university students. Participants and Methods: Participants aged between 17 and 30 years participated in the present study (n=307; 32.4% males; mean [SD] age=21.64 [8.11]). All the participants completed the IGDS-SF9, BSMAS, SABAS, and the Hospital Anxiety and Depression Scale (HADS). Confirmatory factor analyses (CFAs) were used to examine the factorial structures and the unidimensionality for IGDS-SF9, BSMAS, and SABAS. Results: CFAs demonstrated that the three scales were all unidimensional with satisfactory fit indices: comparative fit index = 0.969 to 0.992. In addition, the IGDS-SF9 and BSMAS were slightly modified based on the modification index in CFA. Conclusions: The Chinese IGDS-SF9, BSMAS, and SABAS are valid instruments to assess the addiction levels of internet-related activities for Hong Kong university students

Giant Electroresistance in Edge Metal-Insulator-Metal Tunnel Junctions Induced by Ferroelectric Fringe Fields

An enormous amount of research activities has been devoted to developing new types of non-volatile memory devices as the potential replacements of current flash memory devices. Theoretical device modeling was performed to demonstrate that a huge change of tunnel resistance in an Edge Metal-Insulator-Metal (EMIM) junction of metal crossbar structure can be induced by the modulation of electric fringe field, associated with the polarization reversal of an underlying ferroelectric layer. It is demonstrated that single three-terminal EMIM/Ferroelectric structure could form an active memory cell without any additional selection devices. This new structure can open up a way of fabricating all-thin-film-based, high-density, high-speed, and low-power non-volatile memory devices that are stackable to realize 3D memory architectureope

The dark side of technologies: Technostress among users of information and communication technologies

This paper tests the structure and the predictors of two psychological experiences of technostress associated with the use of information and communication technologies (ICT), i.e., technostrain (users report feelings of anxiety, fatigue, scepticism and inefficacy beliefs related to the use of technologies) and technoaddiction (users feel bad due to an excessive and compulsive use of these technologies). The study included a sample of 1072 ICT users (N = 675 nonintensive ICT users and N = 397 intensive ICT users). Results from multigroup confirmatory factor analyses among non-intensive and intensive ICT users showed, as expected, the four-factor structure of technostrain in both samples. Secondly, and also as expected, confirmatory factorial analyses revealed that technostress experiences are characterized not only by technostrain but also by an excessive and compulsive use of ICT. Moreover, multiple analyses of variance showed significant differences between non-intensive and intensive ICT users (1) in the dimensions of technostress and (2) in specific job demands and job/personal resources. Finally, linear multiple regression analyses revealed that technostrain is positively predicted by work overload, role ambiguity, emotional overload, mobbing and obstacles hindering ICT use, as well as by lack of autonomy, transformational leadership, social support, ICT use facilitators and mental competences. Work overload, role ambiguity and mobbing, as well as the lack of emotional competences, positively predict technoaddiction. Theoretical and practical implications, in addition to future research, are discussed

Delivering Occupation-Based Practice in Stroke Rehabilitation of Hospital Settings: Thai Occupational Therapists’ Experiences

Occupation-based practice (OBP) is central to the practice of occupational therapists where occupations or meaningful activities become the focus of the assessment, intervention, and outcomes measurement process. Although occupational therapists practising in Thailand claim that they engage in OBP, this claim warrants empirical investigation. This study aimed to investigate the experiences and perceptions of hospital-based occupational therapists of OBP within stroke rehabilitation. Utilizing a qualitative design, fourteen occupational therapists were recruited through purposive sampling. Data were collected through semi-structured interviews until data saturation was reached. Each interview was recorded and transcribed verbatim, and data were analyzed using thematic analysis. Five themes were identified (1) Perspective towards OBP, (2) OBP as professional value and cultural identity, (3) Implementing OBP for stroke rehabilitation in hospital settings, (4) Environmental factors of using OBP in stroke rehabilitation, and (5) OBP in the service management. Occupational therapists perceived that OBP is important for professional identity. Using OBP provides positive changes in stroke clients. This study provides evidence that will help implement OBP into occupational therapy in Thailand