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摘要： In this article the author explains how advisors handle the lonely feeling if one is the only black or brown advisor in the financial planning profession. Topics discussed include confidence is sinking due to microaggressions in the financial planning profession; feeling of being overwhelmed by the idea of fighting employers and clients; and leader in terms of diversity and inclusion in this profession.

关键词： Cognitive science   Cognitive Science Society   Cognitive psychology   Computer science   Artificial intelligence   Human-centered computing   Human-robot interaction  

摘要： Although cognitive science started in the 1970s as a multidisciplinary field with the goal of becoming an interdisciplinary one over time, it is now dominated by cognitive psychology. The question becomes whether this matters, and if it does, what should cognitive scientists do about it? I propose that the multidisciplinarity and interdisciplinarity of cognitive science does matter because it leads to potential generation of new ideas, models, and methods. I offer a few recommendations for reforming cognitive science based, in part, on the recent 41st annual meeting of the Cognitive Science Society that sought to reopen cognitive science to minority disciplines comprising cognitive science.

关键词： Artificial intelligence   Computer science   Evolutionary computation   Mathematical optimization   Exchange market   PARTICLE SWARM OPTIMIZATION   DIFFERENTIAL EVOLUTION   SEARCH ALGORITHM   OPTIMAL-DESIGN   FLOW TIME   INTEGER  

摘要： In this paper, a novel meta-heuristic method called the Optimization Booster Algorithm (OBA) is presented. It incorporates existing optimization methods with human-inspired intelligence, which applies particularly while conducting business in exchange markets. A key objective in exchange markets is to increase wealth over time, which is typically the same objective when performing optimizations. Moreover, optimization is about finding a way to increase the fitness value of a system, by spending adequate computation time. The OBA is founded on the core idea that a key reason behind the rapid evolution of human societies compared to the tortoise-like natural evolution is the forward-looking approach. In exchange markets, analysts have learned to make decisions based on forecasted prices, rather than the current prices; and this is an illustrative example of the application of such forward-looking approaches, which form the essence of the OBA. Following extensive numerical experiments, and applications of fourteen well-known heuristic and meta-heuristic methods to solve seventy-one nonlinear unconstrained and constrained, single-objective and multi-objective benchmarks, before and after receiving a boost, the OBA performance is investigated. It has proven - in both theory and practice - to quite significantly improve existing optimization methods. In most cases, boosting resulted in much better quality of outputs, while requiring less computation time.

关键词： E-learning  

摘要： With the advent of technology, electronic learning (e-learning) has become a key aspect of distance learning, making it easier, faster, and more global. With e-learning, teachers have found it easy to deliver education, while students have found new opportunities to learn. There have been several advances to e-learning as a resource for distance learning, with its major features being the use of electronic mediums to facilitate learning. This study is the first of its kind in Iraq that aims to explore the instructional needs of teachers with regards to e-learning for computer science at the secondary school level in Iraq. The study aims to identify the perceptions of secondary school teachers of computer science towards the use of e- learning methods and to also investigate the training needs of teachers for the use of e-learning for teaching of computer science in Iraq. Results indicated that e-learning resources available in the schools surveyed are not enough and the teachers are not making adequate use of e-learning resources. Also, while teachers were aware of the efficiency of e-learning for pedagogy, the schools do not have adequate support mechanisms in place. Teachers were also aware of the competitive edge that e-learning offers them, but did not have adequate training to enable them to use it effectively. Therefore, authorities have to establish a training plan to get teachers comfortable with technology. Such training should start with the basics of e-learning, so that teachers with no knowledge of technology can be carried along. © 2019 Science Press. All rights reserved.

关键词： Computer science education   Professional development   Experienced teachers   Electronic-textiles   Transformative learning   ELECTRONIC TEXTILES   COMMUNITIES  

摘要： Recent international efforts have focused on broadening opportunities for students to learn computer science (CS) in schools, prompting expansion of professional development (PD) programs for educators. But there is little research supporting the ongoing professional needs of computing teachers. This qualitative study examined how in-service CS teachers approached, learned, and anticipated teaching a hands-on electronic-textiles unit. Our findings illustrate that "problems of practice" from the classroom served as a compass to guide CS educators' learning in PD. We also share implications for key features of PD programs that can transform the pedagogical knowledge and classroom practices of experienced teachers. (C) 2019 Elsevier Ltd. All rights reserved.

关键词： Social and psychological needs   Facebook addiction   Self-regulation   Social anxiety   Depression   Life satisfaction   CHINESE COLLEGE-STUDENTS   QUALITY-OF-LIFE   MEDIATING ROLE   ONLINE COMMUNICATION   SMARTPHONE USAGE   ADOLESCENTS   NETWORKING   GRATIFICATIONS   ASSOCIATION   PERSONALITY  

摘要： Concern about the addictive use of Facebook has caused numerous studies to examine the causes of such addiction as well as its consequences. The objective of this study was to examine the impacts of individuals' needs on Facebook addiction (FA) by considering the moderating effect of self-regulation. Furthermore, it investigated the indirect effect of FA on life satisfaction through social anxiety and depression. A total of 358 Malaysian Facebook users took part in this cross-sectional study via an online survey. The hypothesized model was tested using the Partial Least Squares technique. The results revealed that the effects of recognition and entertainment needs on FA were significant, while information and social needs had no effect on FA. The results also indicated that self-regulation moderates negatively the relationship between entertainment needs and FA. The results provided evidence of indirect effects of FA on life satisfaction, mediated by social anxiety and depression. These findings contribute to the literature by providing an explanation for the relationship between FA and life satisfaction. Moreover, the current study is the first known attempt to investigate the moderating effect of self-regulation on the relationship between social and psychological needs and FA.

关键词： Computer science   Earth sciences   Single-image super-resolution   Upscaling   Bathymetry   SEA-FLOOR TOPOGRAPHY   GRAVITY   SPLINES   MODEL  

摘要： We present research using single-image super-resolution (SISR) algorithms to enhance knowledge of the seafloor using the 1-minute GEBCO 2014 grid when 100m grids from high-resolution sonar systems are available for training. We performed numerical experiments of x15 upscaling along three midocean ridge areas in the Eastern Pacific Ocean. We show that four SISR algorithms can enhance this low-resolution knowledge of bathymetry versus bicubic or Splines-In-Tension algorithms through upscaling under these conditions: 1) rough topography is present in both training and testing areas and 2) the range of depths and features in the training area contains the range of depths in the enhancement area. We quantitatively judged successful SISR enhancement versus bicubic interpolation when Student's hypothesis testing show significant improvement of the root-mean squared error (RMSE) between upscaled bathymetry and 100m gridded ground-truth bathymetry at p < 0.05. In addition, we found evidence that random forest based SISR methods may provide more robust enhancements versus non-forest based SISR algorithms.

关键词： g-C3N4   black titanium oxides   environmental pollutant   photocatalysis   visible-active   GRAPHITIC CARBON NITRIDE   LIGHT PHOTOCATALYTIC ACTIVITY   RHODAMINE-B   DIOXIDE PHOTOCATALYSTS   TIO2   DEGRADATION   CONSTRUCTION   WATER   PERFORMANCE   PHOTODEGRADATION  

摘要： Research on the synthesis of advanced composite materials is an important area of research on the visible-active photodegradation of environmental pollutants. Novel hybridized structures of graphitic carbon nitride (g-C3N4) are synthesized by a facile one-step in-situ method. Black titanium oxides, TiO, Ti2O3, a mixture of TiO + Ti2O3, and a reference material, white TiO2 P25, are used for the synthesis of the hybridized g-C3N4 and further decorated with Ag nanoparticles. Physicochemical and optical properties of the obtained materials are characterized by various techniques. XRD patterns revealed that the structural regularity of g-C3N4 and titanium oxide(s) is maintained in the composites. However, the main diffraction peak for g-C3N4 is prominently shifted to a lower 2-theta along with a decrease in the intensity, indicating the formation of g-C3N4 nanosheet heterojunction. Vibrational spectra of the composites showed signature IR peaks for g-C3N4 and demonstrated an enhancement in the vibrations after modifications, and further supported the XRD results. A distinct red-shift in the optical spectra of g-C3N4 upon modifications with black titanium oxide(s) demonstrated an enhanced absorbance of visible light, yet on the contrast white TiO2 P25 showed a blue-shift. Under the experimental conditions of simulated solar light, pristine g-C3N4, and its composites g-C3N4/TiO and g-C3N4/Ti2O3 showed moderate activity for the photodegradation of an organic pollutant, rhodamine B. Interestingly, a synergistic enhancement in the photoactivity is demonstrated by the g-C3N4 modified with a mixture of black titanium oxides (g-C3N4/TiO + Ti2O3). On the other hand, the composite synthesized by a post-synthesis method is found less effective in photodegradation reaction.

关键词： Computer science   Medical imaging   Image processing   Edge detection   X-ray   PSNR   MSE   RMSE   Orthopaedics   MEDICAL IMAGES  

摘要： Edge detection is the prior stage to object recognition and considered as a pillar for image processing task. It is a process to detect such locations from images in terms of pixels where their intensity changing is abruptly. There are many types of images such as medical images, satellite images, articular images, industrial images, general purpose images etc. X-Ray is a type of medical image in which electronic radiation is passed into the human body to capture image of inner parts for better disease diagnoses by orthopaedics or radiologist. In this research paper, we have proposed an improved method to detect edges from human being's X-Ray images based on Gaussian filter and statistical range. Gaussian filter is used for image preprocessing and enhancement. Whereas, Statistical range is used to calculate difference between maximum and minimum pixels from every 3X3 image matrix partition. These two can work to detect edges from X-Ray images. We have also presented a comprehensive comparison of our proposed method with four existing latest methods/algorithms of edge detection. Apart from X-Ray images, experiments have also been conducted on human X-Ray images to detect edges. Further, we have found that our proposed method is superior in terms of MSE, RMSE, PSNR and computation time to detect edges from X-Ray images of human being.

关键词： Computer science   Physics   Materials science   Chemistry   Copper   Titanium   Grain size   Grain morphology   Silicon   Conductivity   NI-SI ALLOYS   ELECTROCHEMICAL PERFORMANCE   THIN-FILMS   MICROSTRUCTURE   STRENGTH   CU3SI   CR  

摘要： The main objective of this research is to explore the influence of trace additions of titanium on grain characteristics (morphology and size), conductivity, and mechanical properties of copper-silicon-titanium alloys. The alloys compositions were designed using response surface optimal design (RSOD). The designed alloy compositions were melted, cast, and subjected to normalizing heat treatment at 900 degrees C for 0.5 hr. The grain characteristics and the elemental constituents of the produced alloys were analyzed using an optical microscope (OM), scanning electron microscopy (SEM), and x-ray fluorescence spectroscopy. The average grain size and distribution were also determined. The properties investigated were percentage elongation, tensile strength, hardness, electrical conductivity, and density. The results were analyzed statistically using analysis of variance (ANOVA) to obtain the significance of titanium content on the tested properties and to generate statistical model equations for future applications. The experimental results were optimized to ascertain the optimal alloy composition and properties. The OM and SEM results revealed a decrease in the average grain size of the parent alloy (Cu-3Si) from approximate to 10.1 mu m to approximate to 4.4 mu m and change in grain morphology after adding titanium, leading to improvement of properties. The results were confirmed to be statistically significant. The optimization results revealed Cu-3Si-0.47wt%Ti as the optimal alloy composition.