Shahid Rahman¹, Fahad Masood², Wajid Ullah Khan², Niamat Ullah¹, Fazal Qudus Khan³, Georgios Tsaramirsis³, Sadeeq Jan^{4, *}, Majid Ashraf⁵

CMC-Computers, Materials & Continua, Vol.64, No.1, pp. 31-61, 2020, DOI:10.32604/cmc.2020.09186

Abstract Steganography aims to hide the messages from unauthorized persons for various purposes, e.g., military correspondence, financial transaction data. Securing the data during transmission is of utmost importance these days. The confidentiality, integrity, and availability of the data are at risk because of the emerging technologies and complexity in software applications, and therefore, there is a need to secure such systems and data. There are various methodologies to deal with security issues when utilizing an open system like the Internet. This research proposes a new technique in steganography within RGB shading space to achieve enhanced security compared with existing systems. We… More >

Mi Kyoung Song¹, Gi Beom Kim¹, Eun Jung Bae¹, Young Ah Lee¹, Hyun-Young Kim², Seung-Kee Min³, Jung Hee Kim⁴, Jae-Kyung Won⁵

Congenital Heart Disease, Vol.13, No.4, pp. 608-616, 2018, DOI:10.1111/chd.12625

Abstract Objective: Pheochromocytoma and paraganglioma (extra-adrenal pheochromocytoma) are rare neuroendocrine tumors that arise from the neuroendocrine cells. Chronic hypoxia is known as a possible cause, and a strong link between cyanotic congenital heart disease and these tumors has been reported. However, reports of phechromocytoma/paraganglioma in Fontan patients were scarce. We herein report seven cases of phechromocytoma/paraganglioma after Fontan operation at a single tertiary center.
Methods: We retrospectively reviewed medical records and imaging studies who diagnosed as phechromocytoma/paraganglioma after Fontan operation in Seoul National University Children’s Hospital.
Results: Seven patients were identified during follow-up after Fontan operation, and the prevalence was 2.5%… More >

Chien-Jung Lin¹, Eric Novak¹, Michael W. Rich¹, Joseph J. Billadello^1,2

Congenital Heart Disease, Vol.13, No.3, pp. 384-391, 2018, DOI:10.1111/chd.12582

Abstract Background: Adults with congenital heart disease (ACHD) have traditionally been viewed as an underinsured population. Whether this is true in the Affordable Care Act era is unknown. We determined insurance patterns in ACHD patients compared to the non-ACHD cardiology population in a contemporary cohort.
Methods: All cardiology outpatient visits between July 2016 and February 2017 to a large referral center in the United States were reviewed. The primary payer was categorized as health maintenance organization (HMO), preferred provider organization (PPO), Medicare, Medicaid, self-pay, or other. Diagnosis and lesion severity of ACHD were extracted from ICD-10 diagnostic codes and assigned according… More >

Hongqiong Tang^{1, 2}, Xiaoyuan Yang^{1, 2, *}, Yingnan Zhang¹, Ke Niu^{1, 2}

CMC-Computers, Materials & Continua, Vol.63, No.3, pp. 1205-1219, 2020, DOI:10.32604/cmc.2020.010075

Abstract H.264/AVC video is one of the most popular multimedia and has been widely used as the carriers of video steganography. In this paper, a novel motion vector (MV) based steganographic algorithm is proposed for the H.264/AVC compressed video without distortion. Four modules are introduced to eliminate the distortion caused by the modifications of motion vectors and guarantee the security of the algorithm. In the embedding block, the motion vector space encoding is used to embed a (2n+1)-ary notational number into an n-dimension vector composed of motion vectors generated from the selection block. Scrambling is adopted to disturb the order of… More >

Jia Xu¹, Baoguo Xie^2,*, Yi Yang³, Dhandevi Maharjan⁴

International Journal of Mental Health Promotion, Vol.21, No.2, pp. 69-80, 2019, DOI:10.32604/IJMHP.2019.010708

Abstract Employee well-being has received considerable attention over the past decades. Little has been done to examine the linkage between organizational socialization and work engagement, one of the most important indicators of wellbeing at work. Drawing upon the conservation of resources (COR) theory, we propose and test relationships between organizational socialization, employee psychological capital, work engagement, and leader psychological capital. Using data from 268 newcomers nested within 36 teams, the results show that (1) organizational socialization is positively related to work engagement; (2) employee psychological capital mediates the relationship between organizational socialization and work engagement; (3) leader psychological capital moderates the… More >

Mingze Li, Huili Ye, Guanglei Zhang^*

International Journal of Mental Health Promotion, Vol.20, No.3, pp. 83-97, 2018, DOI:10.32604/IJMHP.2018.010806

Abstract This study aims to understand how leader narcissism predicts employees’ organizational citizenship behaviors to supervisor (OCB-S). Based on the transactional model of stress, we argue that perceived leader narcissism triggers employees’ OCB-S through hindrance stress. We also consider how employees’ self-monitoring moderates the relationship between perceived leader narcissism and OCB-S. By collecting data from a matching questionnaire survey 48 leaders and 183 employees, we tested our conceptual model using adopted hierarchical regression method and plug-in Process. The results showed that perceived leader narcissism imposed a negative effect on employees’ OCB-S through hindrance stress. Moreover, we found that self-monitoring moderated the… More >

Zijing Wang¹, Min (Maggie) Wan², Huaying Wang^3,*, Yuchen Wei⁴

International Journal of Mental Health Promotion, Vol.20, No.1, pp. 1-13, 2018, DOI:10.32604/IJMHP.2018.010732

Abstract Workplace deviance is an important problem in organization management. Previous studies focused too much on the influence of various factors in the workplace and ignored the interference of family factors. We integrate emotional social function theory and emotional labor theory, and examine the effect of (in) congruence between work and family status on workplace deviance. Using longitudinal data and polynomial regression, we find that: (1) Emotional exhaustion is higher when work and family status are congruent; (2) In the case of work-family congruence, emotional exhaustion is higher when work and family status are aligned at a low level than when… More >

Lujie Chen¹, Liang Zheng¹, Maosen Lian¹, Shouhua Luo^1,*

Molecular & Cellular Biomechanics, Vol.17, No.2, pp. 85-92, 2020, DOI: 10.32604/mcb.2019.07386

Abstract Micro-CT provides a high-resolution 3D imaging of micro-architecture in a non-invasive way, which becomes a significant tool in biomedical research and preclinical applications. Due to the limited power of micro-focus X-ray tube, photon starving occurs and noise is inevitable for the projection images, resulting in the degradation of spatial resolution, contrast and image details. In this paper, we propose a C-GAN (Conditional Generative Adversarial Nets) denoising algorithm in projection domain for Micro-CT imaging. The noise statistic property is utilized directly and a novel variance loss is developed to suppress the blurry effects during denoising procedure. Conditional Generative Adversarial Networks (C-GAN)… More >

Ruohan Meng^{1, 2}, Qi Cui^{1, 2}, Zhili Zhou^{1, 2}, Chengsheng Yuan^{1, 2, 3}, Xingming Sun^{1, 2, *}

CMC-Computers, Materials & Continua, Vol.63, No.1, pp. 183-196, 2020, DOI:10.32604/cmc.2020.05317

Abstract Information hiding tends to hide secret information in image area where is rich texture or high frequency, so as to transmit secret information to the recipient without affecting the visual quality of the image and arousing suspicion. We take advantage of the complexity of the object texture and consider that under certain circumstances, the object texture is more complex than the background of the image, so the foreground object is more suitable for steganography than the background. On the basis of instance segmentation, such as Mask R-CNN, the proposed method hides secret information into each object's region by using the… More >

Weiwei Lu^1,*, Yirui Zhang¹, Yixian Yao¹, Yuying Wu¹, Han Y. H. Chen², Hailin Zhang³, Jia Yu⁴, Caiqin Shen⁵, Qi Liu⁶, Honghua Ruan^1,*

Phyton-International Journal of Experimental Botany, Vol.89, No.1, pp. 13-26, 2020, DOI:10.32604/phyton.2020.09125

Abstract The priming effect (PE) induced by biochar provides a basis for evaluating its carbon (C) sequestration potential in soils. A 60 days’ laboratory incubation was conducted, which involved the amendment of biochar (1% of soil mass) produced from rice straw at 300ºC (B300) and 500ºC (B500) to young (Y) and old (O) poplar plantation soils, with the aim of studying the responses of biochar-induced PEs to poplar plantation ages. This incubation included six treatments: Y + CK (control), Y + B300, Y + B500, O + CK, O + B300, and O + B500. Carbon dioxide (CO₂) emissions were significantly… More >