With the development of the Internet,image encryption technology has become critical for network security.Traditional methods often suffer from issues such as insufficient chaos,low randomness in key generation,and po...With the development of the Internet,image encryption technology has become critical for network security.Traditional methods often suffer from issues such as insufficient chaos,low randomness in key generation,and poor encryption efficiency.To enhance performance,this paper proposes a new encryption algorithm designed to optimize parallel processing and adapt to images of varying sizes and colors.The method begins by using SHA-384 to extract the hash value of the plaintext image,which is then processed to determine the chaotic system’s initial value and block size.The image is padded and divided into blocks for further processing.A novel two-dimensional infinite collapses hyperchaotic map(2DICHM)is employed to generate the intra-block scrambling sequence,while an improved variable Joseph traversal sequence is used for inter-block scrambling.After removing the padding,3D forward and backward shift diffusions,controlled by the 2D-ICHM sequences,are applied to the scrambled image,producing the ciphertext.Simulation results demonstrate that the proposed algorithm outperforms others in terms of entropy,anti-noise resilience,correlation coefficient,robustness,and encryption efficiency.展开更多
Sister Mary Joseph’s结节(Sister Mary Joseph’s nodule,SMJN)是指腹腔内恶性肿瘤导致的脐部转移性结节,1949年由Hamilton Bailey命名以纪念St.Mary’s Hospital的护士Sister Joseph。SMJN并不多见,但个案报道屡屡见诸文献。这种脐...Sister Mary Joseph’s结节(Sister Mary Joseph’s nodule,SMJN)是指腹腔内恶性肿瘤导致的脐部转移性结节,1949年由Hamilton Bailey命名以纪念St.Mary’s Hospital的护士Sister Joseph。SMJN并不多见,但个案报道屡屡见诸文献。这种脐部转移可以与腹腔内肿瘤同时出现或异时出现,是预后极差的表现。SMJN最常见原发肿瘤为胃癌及卵巢癌,结肠癌特别是右侧结肠癌引起的SMJN极其罕见。另外右侧结肠癌转移至腹股沟淋巴结未见文献报道。本文报道一例右侧结肠癌同时伴有SMJN及腹股沟淋巴结转移,并对相关文献进行综述。展开更多
报告1例可能为胃癌转移的Sister Mary Joseph结节1例。患者男,44岁。脐部出现暗红色大小不等的结节7个月。皮损组织病理检查:真皮全层胶原束间散在呈腺样分化的肿瘤细胞,免疫组化染色:癌胚抗原(CEA)阳性、细胞角蛋白(CK)20阳性、CK7阳...报告1例可能为胃癌转移的Sister Mary Joseph结节1例。患者男,44岁。脐部出现暗红色大小不等的结节7个月。皮损组织病理检查:真皮全层胶原束间散在呈腺样分化的肿瘤细胞,免疫组化染色:癌胚抗原(CEA)阳性、细胞角蛋白(CK)20阳性、CK7阳性、甲状腺转录因子(TTF)-1阴性。糖链抗原(CA)19-9、CA72-4、CA24-2均升高。腹部B超检查示:胃幽门部胃壁增生性病变,肝右叶多发偏强回声结节,腹水。展开更多
In Catch-22, Joseph Heller shows his ethical concern behind absurdity, which is manifested from his attitude toward individualism and utilitarianism, religious belief, sexual promiscuity, interpersonal relationship, etc.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.62105004 and 52174141)the College Student Innovation and Entrepreneurship Fund Project(Grant No.202210361053)+4 种基金Anhui Mining Machinery and Electrical Equipment Coordination Innovation Center,Anhui University of Science&Technology(Grant No.KSJD202304)the Anhui Province Digital Agricultural Engineering Technology Research Center Open Project(Grant No.AHSZNYGC-ZXKF021)the Talent Recruitment Special Fund of Anhui University of Science and Technology(Grant No.2024yjrc175)the Graduate Innovation Fund Project of Anhui University of Science and Technology(Grant Nos.2024cx2067,2024cx2107,and 2024cx2064)Seed Support Project for Postgraduate Innovation,Entrepreneurship and Practice at Anhui University of Science and Technology(Grant No.2024cxcysj084).
文摘With the development of the Internet,image encryption technology has become critical for network security.Traditional methods often suffer from issues such as insufficient chaos,low randomness in key generation,and poor encryption efficiency.To enhance performance,this paper proposes a new encryption algorithm designed to optimize parallel processing and adapt to images of varying sizes and colors.The method begins by using SHA-384 to extract the hash value of the plaintext image,which is then processed to determine the chaotic system’s initial value and block size.The image is padded and divided into blocks for further processing.A novel two-dimensional infinite collapses hyperchaotic map(2DICHM)is employed to generate the intra-block scrambling sequence,while an improved variable Joseph traversal sequence is used for inter-block scrambling.After removing the padding,3D forward and backward shift diffusions,controlled by the 2D-ICHM sequences,are applied to the scrambled image,producing the ciphertext.Simulation results demonstrate that the proposed algorithm outperforms others in terms of entropy,anti-noise resilience,correlation coefficient,robustness,and encryption efficiency.
文摘Sister Mary Joseph’s结节(Sister Mary Joseph’s nodule,SMJN)是指腹腔内恶性肿瘤导致的脐部转移性结节,1949年由Hamilton Bailey命名以纪念St.Mary’s Hospital的护士Sister Joseph。SMJN并不多见,但个案报道屡屡见诸文献。这种脐部转移可以与腹腔内肿瘤同时出现或异时出现,是预后极差的表现。SMJN最常见原发肿瘤为胃癌及卵巢癌,结肠癌特别是右侧结肠癌引起的SMJN极其罕见。另外右侧结肠癌转移至腹股沟淋巴结未见文献报道。本文报道一例右侧结肠癌同时伴有SMJN及腹股沟淋巴结转移,并对相关文献进行综述。
文摘报告1例可能为胃癌转移的Sister Mary Joseph结节1例。患者男,44岁。脐部出现暗红色大小不等的结节7个月。皮损组织病理检查:真皮全层胶原束间散在呈腺样分化的肿瘤细胞,免疫组化染色:癌胚抗原(CEA)阳性、细胞角蛋白(CK)20阳性、CK7阳性、甲状腺转录因子(TTF)-1阴性。糖链抗原(CA)19-9、CA72-4、CA24-2均升高。腹部B超检查示:胃幽门部胃壁增生性病变,肝右叶多发偏强回声结节,腹水。
文摘In Catch-22, Joseph Heller shows his ethical concern behind absurdity, which is manifested from his attitude toward individualism and utilitarianism, religious belief, sexual promiscuity, interpersonal relationship, etc.
