Background:Reconstruction of large scalp defects after tumor resection is common and challenging.Free skin grafting or free flap transfer is always performed.However,these techniques can result in poor functional and ...Background:Reconstruction of large scalp defects after tumor resection is common and challenging.Free skin grafting or free flap transfer is always performed.However,these techniques can result in poor functional and cosmetic outcomes.Methods:In the Second Affiliated Hospital of Soochow University and the Second Affiliated Hospital of Chengdu Medical College,35 patients underwent jigsaw puzzle flap procedures based on a free-style perforator to repair large scalp defects after tumor resection from May 2013 to November 2022.The key to this procedure was to divide a large defect into several smaller parts that correspond to adjacent free-style perforators around the scalp defect.The free-style perforator flaps were designed in different ways,such as propeller flaps,rotation flaps,and V-Y advancement flaps,which were pedicled with free-style perforators.All of the small flaps were then mobilized to the defect and sutured to each other to create a new,large jigsaw puzzle-like flap to cover the large scalp defect.Finally,all the donor sites were closed directly.Results:Overall,35 patients were treated.The average defect size was 72 cm^(2)(range,25-91 cm^(2)).All flaps had a satisfactory appearance after follow-up periods of 6 months-10 years.Local tumor recurrence occurred in one case.Conclusion:The application of a jigsaw puzzle flap based on a free-style perforator is a suitable option for the reconstruction of large scalp defects after resection,yielding satisfactory functional and cosmetic results.展开更多
Guided by the ternary leadership theory from the perspective of social psychology,this paper explores the impacts of authoritarian,benevolent,and moral leadership on the top design of the Grand Canal of China in terms...Guided by the ternary leadership theory from the perspective of social psychology,this paper explores the impacts of authoritarian,benevolent,and moral leadership on the top design of the Grand Canal of China in terms of its water management practice,while providing reference for resolving the“Matteo Ricci Puzzle”.The research findings are threefold:first,authoritarian as it is,the central government of China formulates relevant laws and regulations to provide legal system insurance for the construction of the Grand Canal Cultural Belt,thus providing the blueprint for constructing the“bright cultural belt,green ecological belt and colorful tourism belt of the Grand Canal”.Second,led by the Central Government,sticking to benevolent and moral leadership,China advocates scientific water management concepts and methods,and gives long-term and comprehensive care to the well-being of the people along the banks of the Grand Canal.Finally,the top-level design of the Grand Canal of China is based on the ternary leadership theory rooted in social psychology and has formulated a set of properly-scheduled,reasonably-coordinated,and flexibly-operated management system for the fundamental interests of the people and long-term goals of the country.展开更多
公有链无集中控制节点、去中心化和允许任意节点加入的特点使其拥有高效、低成本和高数据安全性的优势,但由于其允许任意节点接入,因此将增加公有链网络的脆弱性。基于Client Puzzle,提出一种节点接入控制模型CPACM(Client Puzzle based...公有链无集中控制节点、去中心化和允许任意节点加入的特点使其拥有高效、低成本和高数据安全性的优势,但由于其允许任意节点接入,因此将增加公有链网络的脆弱性。基于Client Puzzle,提出一种节点接入控制模型CPACM(Client Puzzle based Access Control Model),使新节点接入公有链前利用算力进行工作量证明,完成工作量证明后才可接入公有链。该模型在维持公有链去中心化的同时,增加了接入控制。实验证明,该模型在不影响诚实节点加入的情况下,能以较高成功率限制低诚意节点和低算力节点的加入,并且能防止节点间的伙同,防范了恶意行为,提高了公有链网络的安全性。展开更多
Benign prostatic hyperplasia(BPH)is a common condition affecting over 50% of men as they reach the 5th decade of their life[1].While over half of these patients have symptoms,it is not clear why some of these men do w...Benign prostatic hyperplasia(BPH)is a common condition affecting over 50% of men as they reach the 5th decade of their life[1].While over half of these patients have symptoms,it is not clear why some of these men do while others do not.The article Solving the benign prostatic hyperplasia puzzle by Keong Tatt Foo[2],delves into the different conundrums urologists face when trying to treat their patients.展开更多
From 1985, an increasing gap has emerged between the official statistical measures of meat production and meat consumption in China, which has raised concerns from many researchers using such data. In this paper we re...From 1985, an increasing gap has emerged between the official statistical measures of meat production and meat consumption in China, which has raised concerns from many researchers using such data. In this paper we report the results of 428 observations（survey of 107 urban and rural households×4 quarters） from 7 provinces conducted in 2010, and compare them with the official statistical data from the National Bureau of Statistics of China（NBSC）. We conclude that the main reason for the discrepancy is due to the underreporting of consumption, which is due mainly to the omission of consumption away from home.展开更多
Current image steganography methods are working by assigning an image as a cover file then embed the payload within it by modifying its pixels,creating the stego image.However,the left traces that are caused by these ...Current image steganography methods are working by assigning an image as a cover file then embed the payload within it by modifying its pixels,creating the stego image.However,the left traces that are caused by these modifications will make steganalysis algorithms easily detect the hidden payload.A coverless data hiding concept is proposed to solve this issue.Coverless does not mean that cover is not required,or the payload can be transmitted without a cover.Instead,the payload is embedded by cover generation or a secret message mapping between the cover file and the payload.In this paper,a new coverless image steganography method has been proposed based on the jigsaw puzzle image generation driven by a secret message.Firstly,the image is divided into equal rows then further divided into equal columns,creating blocks(i.e.,sub-images).Then,according to secret message bits and a proposed mapping function,each block will have tabs/blanks to get the shape of a puzzle piece creating a fully shaped jigsaw puzzle stego-image.After that,the generated jigsaw puzzle image is sent to the receiver.Experimental results and analysis show a good performance in the hiding capacity,security,and robustness compared with existing coverless image steganography methods.展开更多
BACKGROUND Microcystic adnexal carcinoma(MAC)is a rare malignant tumor of the skin that is commonly found on the face.It grows slowly and has a low mortality rate.However,for various reasons,including strong histologi...BACKGROUND Microcystic adnexal carcinoma(MAC)is a rare malignant tumor of the skin that is commonly found on the face.It grows slowly and has a low mortality rate.However,for various reasons,including strong histological invasiveness,clinical inexperience and inadequate procedure design,immediate or permanent facial deformity may occur after surgical operations.CASE SUMMARY This article describes a middle-aged female artist who was diagnosed with MAC on the left upper lip.She declined the recommended treatment plan,which included two-stage reconstruction,skin grafting,or surgery that could have resulted in obvious facial dysfunction or esthetic deformity.We accurately designed a personalized procedure involving a“jigsaw puzzle advancement flap”for the patient based on the lesion location and the estimated area of skin loss.The procedure was successful;both pathological R0 resection and immediate and long-term esthetic reconstruction effects were achieved.CONCLUSION This study suggests that when treating facial MAC or other skin malignancies,a surgical team should have sufficient plastic surgery-related knowledge and skills.An optimal surgical plan for an individual is needed to achieve good facial esthetics and functional recovery and shorten the treatment course.展开更多
基金supported by the National Natural Science Foundation of China(grant nos.32071238,82073477,and 82103773)Natural Science Project of Chengdu Medical College(grant nos.CYZZD20-01 and CYZ19-31)+3 种基金Science and Technology Project of Health Commission of Sichuan Province(grant no.21PJ158)Scientific Research Fund Project of China Baoyuan Investment Co.,Ltd.(grant no.CBYI202104)Nuclear Medical Science and Technology Innovation Project of China National Nuclear Corporation Medical Industry Management Co.,Ltd.(grant no.ZHYLTD2021002)Young Talent Project of China National Nuclear Corporation.
文摘Background:Reconstruction of large scalp defects after tumor resection is common and challenging.Free skin grafting or free flap transfer is always performed.However,these techniques can result in poor functional and cosmetic outcomes.Methods:In the Second Affiliated Hospital of Soochow University and the Second Affiliated Hospital of Chengdu Medical College,35 patients underwent jigsaw puzzle flap procedures based on a free-style perforator to repair large scalp defects after tumor resection from May 2013 to November 2022.The key to this procedure was to divide a large defect into several smaller parts that correspond to adjacent free-style perforators around the scalp defect.The free-style perforator flaps were designed in different ways,such as propeller flaps,rotation flaps,and V-Y advancement flaps,which were pedicled with free-style perforators.All of the small flaps were then mobilized to the defect and sutured to each other to create a new,large jigsaw puzzle-like flap to cover the large scalp defect.Finally,all the donor sites were closed directly.Results:Overall,35 patients were treated.The average defect size was 72 cm^(2)(range,25-91 cm^(2)).All flaps had a satisfactory appearance after follow-up periods of 6 months-10 years.Local tumor recurrence occurred in one case.Conclusion:The application of a jigsaw puzzle flap based on a free-style perforator is a suitable option for the reconstruction of large scalp defects after resection,yielding satisfactory functional and cosmetic results.
基金the research funding from the National Planning Office of Philosophy and Social Science Grant of P.R.China(18BGJ086).
文摘Guided by the ternary leadership theory from the perspective of social psychology,this paper explores the impacts of authoritarian,benevolent,and moral leadership on the top design of the Grand Canal of China in terms of its water management practice,while providing reference for resolving the“Matteo Ricci Puzzle”.The research findings are threefold:first,authoritarian as it is,the central government of China formulates relevant laws and regulations to provide legal system insurance for the construction of the Grand Canal Cultural Belt,thus providing the blueprint for constructing the“bright cultural belt,green ecological belt and colorful tourism belt of the Grand Canal”.Second,led by the Central Government,sticking to benevolent and moral leadership,China advocates scientific water management concepts and methods,and gives long-term and comprehensive care to the well-being of the people along the banks of the Grand Canal.Finally,the top-level design of the Grand Canal of China is based on the ternary leadership theory rooted in social psychology and has formulated a set of properly-scheduled,reasonably-coordinated,and flexibly-operated management system for the fundamental interests of the people and long-term goals of the country.
文摘公有链无集中控制节点、去中心化和允许任意节点加入的特点使其拥有高效、低成本和高数据安全性的优势,但由于其允许任意节点接入,因此将增加公有链网络的脆弱性。基于Client Puzzle,提出一种节点接入控制模型CPACM(Client Puzzle based Access Control Model),使新节点接入公有链前利用算力进行工作量证明,完成工作量证明后才可接入公有链。该模型在维持公有链去中心化的同时,增加了接入控制。实验证明,该模型在不影响诚实节点加入的情况下,能以较高成功率限制低诚意节点和低算力节点的加入,并且能防止节点间的伙同,防范了恶意行为,提高了公有链网络的安全性。
文摘Benign prostatic hyperplasia(BPH)is a common condition affecting over 50% of men as they reach the 5th decade of their life[1].While over half of these patients have symptoms,it is not clear why some of these men do while others do not.The article Solving the benign prostatic hyperplasia puzzle by Keong Tatt Foo[2],delves into the different conundrums urologists face when trying to treat their patients.
基金supported by the Earmarked Fund for Modern Agro-Industry Technology Research System,China(CARS-42-G24)the Agricultural Science and Technology Innovation Program,China(ASTIP-IAED-2015-01)+1 种基金the Project of Construction of Innovative Teams and Teacher Career Development for Universities and Colleges Under Beijing Municipality,China(IDHT20140510)the Project of Strategy of Ensuring China’s Animal Products Eatable Safety(13BGL098)
文摘From 1985, an increasing gap has emerged between the official statistical measures of meat production and meat consumption in China, which has raised concerns from many researchers using such data. In this paper we report the results of 428 observations（survey of 107 urban and rural households×4 quarters） from 7 provinces conducted in 2010, and compare them with the official statistical data from the National Bureau of Statistics of China（NBSC）. We conclude that the main reason for the discrepancy is due to the underreporting of consumption, which is due mainly to the omission of consumption away from home.
基金funded by“Taif University Researchers Supporting Project No.(TURSP-2020/160),Taif University,Taif,Saudi Arabia.”。
文摘Current image steganography methods are working by assigning an image as a cover file then embed the payload within it by modifying its pixels,creating the stego image.However,the left traces that are caused by these modifications will make steganalysis algorithms easily detect the hidden payload.A coverless data hiding concept is proposed to solve this issue.Coverless does not mean that cover is not required,or the payload can be transmitted without a cover.Instead,the payload is embedded by cover generation or a secret message mapping between the cover file and the payload.In this paper,a new coverless image steganography method has been proposed based on the jigsaw puzzle image generation driven by a secret message.Firstly,the image is divided into equal rows then further divided into equal columns,creating blocks(i.e.,sub-images).Then,according to secret message bits and a proposed mapping function,each block will have tabs/blanks to get the shape of a puzzle piece creating a fully shaped jigsaw puzzle stego-image.After that,the generated jigsaw puzzle image is sent to the receiver.Experimental results and analysis show a good performance in the hiding capacity,security,and robustness compared with existing coverless image steganography methods.
文摘BACKGROUND Microcystic adnexal carcinoma(MAC)is a rare malignant tumor of the skin that is commonly found on the face.It grows slowly and has a low mortality rate.However,for various reasons,including strong histological invasiveness,clinical inexperience and inadequate procedure design,immediate or permanent facial deformity may occur after surgical operations.CASE SUMMARY This article describes a middle-aged female artist who was diagnosed with MAC on the left upper lip.She declined the recommended treatment plan,which included two-stage reconstruction,skin grafting,or surgery that could have resulted in obvious facial dysfunction or esthetic deformity.We accurately designed a personalized procedure involving a“jigsaw puzzle advancement flap”for the patient based on the lesion location and the estimated area of skin loss.The procedure was successful;both pathological R0 resection and immediate and long-term esthetic reconstruction effects were achieved.CONCLUSION This study suggests that when treating facial MAC or other skin malignancies,a surgical team should have sufficient plastic surgery-related knowledge and skills.An optimal surgical plan for an individual is needed to achieve good facial esthetics and functional recovery and shorten the treatment course.
