This work reports the synthesis and fluorescence of a series five Cd(II) coordination polymers with variety structure topologies. Homoterephthalic acid (H2htpa) reacts Cd(OAc)2 to produce polymer [Cd(htpa)(H2O)]n (1). If kind dipyridyl-type second linear ligand is introduced into synthetic system, three interpenetrating complexes are isolated, namely, [Cd(htpa)(bpp)]n (2), [Cd(htpa)(bpe)]n (3), [Cd3(htpa)2(bpa)2(OAc)2]n (4) (bpp = 1,3-di(4-pyridyl)propane, bpe 1,2-di(4-pyridyl)ethylene, bpa...

The aim of this study was to investigate the chest CT manifestations COVID-19 and its evolving process explore inherent outcomes.Inpatients diagnosed with at Enze Hospital from January 17, 2020 February 15, were included. characteristics treatment outcomes analyzed.Twenty-two patients included in study. Clinical symptoms time onset fever (n=19) cough (n=8). first findings mainly ground-glass opacities (GGOs) (n=18), lung consolidation (n=7), interlobular septal thickening (n=5),...

With the rapid development of network, more and digital images need to be stored communicated. Due openness network sharing, problems image security become an important threat In this paper, we propose a novel gray encryption algorithm based on chaotic mapping DNA (Deoxyribonucleic Acid) encoding. We solve error irreversibility previous work, which can only encrypt plain image, cannot decrypt cipher with correct secret key attacked by chosen plaintext. To make invertible, encode input...

People nowadays care more about the source and outcome of English instruction, resulting in an improvement quality instruction. As a result, majority students’ reading writing levels increase steadily, but their listening ability does not, extremely unbalanced development “listening, reading, writing” four skills. The use language real-world situations is reflection human creativity, content tone same speaker’s speech at different times, places, occasions can vary significantly. Language...

The accuracy of Bayesian inference can be negatively affected by the use inaccurate forward models. In case gravitational-wave inference, accurate but computationally expensive waveform models are sometimes substituted with faster approximate ones. model error introduced this substitution mitigated in various ways, one which is interpolating and marginalizing over using Gaussian-process regression. However, regression limited curse dimensionality, makes it less effective for analyzing...

A cloud server spent a lot of time, energy and money to train Viola-Jones type object detector [1] with high accuracy. Clients can upload their photos the find objects. However, client does not want leakage content his/her photos. In meanwhile, is also reluctant leak any parameters trained detectors. 10 years ago, Avidan & Butman introduced Blind Vision, which method for securely evaluating ViolaJones detector. Vision uses standard cryptographic tools painfully slow compute, taking couple...

The characteristics of the nanostructure on surface highly oriented pyrolytic graphite (HOPG) involving field emitted electrons is examined with scanning tunneling microscopy (STM). A simple model based continuum electron diffusion proposed and compared experimental results. It suggests that process could be associated at vicinity injection position. also implies as-produced nanometer sized craters correlated to anisotropy degree transport properties HOPG.

Fingerprint matching process is identical to the generation of equivalent triangular frameworks with minutiae at their vertices. Triangle descriptor introduced evaluate similarity two triangles that integrates characteristic components triangle global orientation field information. To reduce computational complexity finding correspondent triangles, fingerprint image separated into a series circular areas utilizing belief function singular points. Seed are searched in limited regions...

Summary We propose a novel AR CAPTCHA that first uses Augmented Reality to design CAPTCHA. Users should use their cameras on mobile devices capture marker in the 3D physical world or PC screens find appropriate angle recognize each character rendered registration manner, which is very hard for machines robots do same thing. Besides, we add many random 2D characters make state‐of‐the‐art scene text recognition methods fail target characters. To ensure availability, dual‐channel scenario...

Column generation (CG) is a powerful technique for solving optimization problems that involve large number of variables or columns. This begins by smaller problem with subset columns and gradually generates additional as needed. However, the often requires difficult subproblems repeatedly, which can be bottleneck CG. To address this challenge, we propose novel method called machine learning enhanced ant colony (MLACO), to efficiently generate multiple high-quality from subproblem....

The construction of health service platform for the elderly must attach great importance to demands ,basing on innovation and whole process by taking full advantage IOT technology, data warehousing, mining analysis cloud computing technology other modern information technologies, widely applying trans-regional remote collection transmission equipment, setting up with close connection between production research so as enhance ability level elderly.

With the continuous deepening of higher education reform, building a curriculum ideological and political teaching system improving students’ comprehensive literacy have gradually become key task for current leaders teachers. Meanwhile, with development social economy, artificial intelligence technology is constantly upgrading, bringing new opportunities ideas innovation various industries. Therefore, college English teachers can rely on to construct an model courses. This integrate...

The fabrication process on a graphite surface is investigated using scanning tunneling microscopy, with emphasis the effects of high electric field associated voltage pulse. We have demonstrated that two distinct types features can be repeatedly produced and are found to correlated tip–sample separation, displaying threshold behavior. By correlating observation general trend barrier height versus it suggested emission electrical breakdown driving mechanisms for generating craters mounds,...