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Medication for Birth Control in Bitch at Battambang City,Battambang Province,Cambodia
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作者 Nal Si Sokun Khoeurn +1 位作者 Manay It Kouch Theng 《Journal of Environmental Science and Engineering(A)》 CAS 2024年第2期61-67,共7页
The observation study was conducted in Battambang City,Battambang province,by interviewing the 88 dog owners,who came to the animal pharmacy stores and clinics by using convenience sampling method of nonrandomized sam... The observation study was conducted in Battambang City,Battambang province,by interviewing the 88 dog owners,who came to the animal pharmacy stores and clinics by using convenience sampling method of nonrandomized sampling.Though the results of the interviews,showed that the dog owners were selected in different range of age and gender,however,most of them were in middle age from 21-40 years old,with medium and rich living wellbeing.The confinement in premise/house was primarily applied by dog owners.The number of bitches per household was from 1 to 3 batches,and there was no association with the wellbeing of the owners,and the age was from 2 to 4 years old,but some bitches had older age.Most of the bitches were dewormed in last 3 months and 6 months,however,there were some bitches last more than 6 months after deworming.The bitch vaccination was applied by owner around for 60.00%.There were two popular types of vaccination,Rabies and DHLPP(Distemper,Hepatitis,Leptospirosis,Parvovirus,and Parainfluenza).For dog population management,about 94.29%of the owners apply nonsurgical method with applying medicine.The reasons for using nonsurgical method were not only the cheapest price and easy way,but also there was no information on the consequence of using medication for birth control.The medication was highly used before heat.But,almost half of them got health problem in less than 3 months after administration,also some got long-term effect.Among clinical signs observed,the enlargement of belly was the most evidence,since 54.76%of affected bitches had shown it,then followed by discharge blood from vulvar,clear discharge and thick white pus from vulvar,accounting for 38.10%,35.71%and 26.71%,respectively. 展开更多
关键词 BITCH VACCINATION birth control clinical signs
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Mixed Reaction to Proposed Dual Standards for Birth Control
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《China Population Today》 2002年第Z1期19-20,共2页
关键词 Mixed Reaction to Proposed Dual Standards for birth control
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Relaxing Birth Control
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作者 Zheng Yang 《ChinAfrica》 2014年第6期24-25,共2页
ONE child or two? This is the question soon to be pondered by more than 15 million couples across China's mainland. They will become eligible later this year to have two children if one of the parents is an only chi... ONE child or two? This is the question soon to be pondered by more than 15 million couples across China's mainland. They will become eligible later this year to have two children if one of the parents is an only child. The new population policy, issued in November 2013, has already seen the choice given to couples in 22 provincial-level regions by the end of April this year. 展开更多
关键词 Relaxing birth control
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CHINA'S RADICAL BIRTH CONTROL POLICY AND IMPLICATIONS FOR INDIA
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作者 金玉献 《Chinese Geographical Science》 SCIE CSCD 1994年第3期210-218,共9页
China has been firmly carried out her birth control policy for over 2 decades, and this has been very srccessful in practice. India is the second populous country in the world. Although overpopulation problem was ide... China has been firmly carried out her birth control policy for over 2 decades, and this has been very srccessful in practice. India is the second populous country in the world. Although overpopulation problem was identified in the 1950s, and birth control policy was implemented since then, the situation has not yet been improved. The aim of this paper is to make comparisons between these two countries, in terms of social and cultural background, geographical distribution of population, national minority structure, in order to reveal the reasons behind the China's success, and implications for India. 展开更多
关键词 China INDIA birth control COMPARISON IMPLICATIONS
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More Rights but Less Gains:Relaxed Birth Control Policyand the Loss for Women 被引量:2
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作者 Ying Zhao Lin Zhang +1 位作者 Yuanping Lu Bo Wen 《China & World Economy》 2023年第2期159-191,共33页
In view of its aging population,China initiated in 2012 a relaxed birth control policy after a three-decades-long implementation of the restrictive one-child policy.This paper examines how China's relaxed birth co... In view of its aging population,China initiated in 2012 a relaxed birth control policy after a three-decades-long implementation of the restrictive one-child policy.This paper examines how China's relaxed birth control policy leads to gender inequality.It specifically focuses on migrant workers because they account for a significant portion of the working group.Using the National Migrant Population Dynamic Monitoring Survey from 2014 to 2016,we found that China's two-child pilot policy reduced female labor force participation by 1.4 percentage points.This negative effect was more pronounced for women with higher educational levels or working in the private sector because employers foresee greater risks of productivity decline.We demonstrated that the gender pay gap increased from RMB956 to RMB1,053 during this same period.Pinpointing these unintended consequences brought about by the relaxation of the one-child policy helps provide a more complete picture of inequality and make sense of persistent relative poverty in Chinese society.To counteract gender discrimination,females are advised to work outside their home jurisdictions and take advantage of positive peer effects. 展开更多
关键词 birth control gender inequality migrant worker two-child policy wage gap
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Wealthy Flou Birth Control
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作者 FENG JIANHUA 《Beijing Review》 2007年第7期18-20,共3页
China’s family planning policies have come under criticism for failing to con birth rates among wealthy families A ccording to the family planning policies, Hong Youfu, a restaurant owner in Fangcun District
关键词 Wealthy Flou birth control
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Birth Control and Family Planning in China
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作者 XIAO HUAN PAN ZHONGMING 《Women of China》 1996年第12期20-21,共2页
THIS year, Women of China asked two 30-year-old women from the Yimeng mountain area in Shandong Province about their chosen methods of birth control. Both women reported using intrauterine devices (IUDs), which they h... THIS year, Women of China asked two 30-year-old women from the Yimeng mountain area in Shandong Province about their chosen methods of birth control. Both women reported using intrauterine devices (IUDs), which they had placed by local gynecologists at the hospital 40 days after giving birth. Are these women aware of other contraceptive methods? Some rural women tell us they know of other methods such as oral contraception, contraceptive implants and tubal ligation. 展开更多
关键词 In IUD birth control and Family Planning in China
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If Mom OKs Birth Control,Teen Sex More Likely
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作者 裘金尧 《当代外语研究》 2000年第10期17-18,共2页
美国的科技领先世界一步,而该国的unwed mothers的人数恐怕也为世界之最。所谓unwed mothers指未婚先孕者,多系十多岁的学生娃。 国人视“未婚先孕”为见不得人之事,这是我们的文化。而美国的unwedmothers却少有羞耻感,她们落落大方,将... 美国的科技领先世界一步,而该国的unwed mothers的人数恐怕也为世界之最。所谓unwed mothers指未婚先孕者,多系十多岁的学生娃。 国人视“未婚先孕”为见不得人之事,这是我们的文化。而美国的unwedmothers却少有羞耻感,她们落落大方,将自己的孩子带到学校里来,同学围观,就如同围观已婚夫妇所生的小孩一样,根本谈不上是什么social stigma(社会的耻辱)! 本文提出了一个非常重要的问题:父母是否应该向其十多岁的子女公开自己避孕的措施?父母是否应该和他们谈“性”?本文在对万名学生调研的基础上对此问题作出了辨证回答: 1/这种“公开”和“谈论”,会令子女more likely to become sexually active,或者twice as likely to lose their virginity(处女性)。 2/这种“公开”和“谈论”利大于弊。因为其子女将less likely to have sex overthe study period.And when they did have sex,these kids were more likely to usebirth control and less likely to become pregnant. 我国青少年的性知识从哪里获得?笔者没有读到过这方面的调查,“无师自通”者也许不乏其人。为人父母者是否应该和自己的子女谈性论爱,这也许不是一个简单的“应该/不应该”的问题。真正在起作用的还有我们的文化传统。 展开更多
关键词 未婚先孕 If Mom OKs birth control Teen Sex More Likely
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Risk Factors for Low Birth Weight and Preterm Birth:A Population-based Case-control Study in Wuhan,China 被引量:3
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作者 汪静 曾云 +6 位作者 倪泽敏 王姽 刘淑运 李灿 余朝利 王齐 聂绍发 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2017年第2期286-292,共7页
Low birth weight(LBW) and preterm birth(PB) are associated with newborn mortality and diseases in adulthood.We explored factors related to LBW and PB by conducting a population-based case-control study from Januar... Low birth weight(LBW) and preterm birth(PB) are associated with newborn mortality and diseases in adulthood.We explored factors related to LBW and PB by conducting a population-based case-control study from January 2011 to December 2013 in Wuhan,China.A total of 337 LBW newborn babies,472 PB babies,and 708 babies with normal birth weights and born from term pregnancies were included in this study.Information of newborns and their parents was collected by trained investigators using questionnaires and referring to medical records.Univariate and logistic regression analyses with the stepwise selection method were used to determine the associations of related factors with LBW and PB.Results showed that maternal hypertension(OR=6.78,95% CI:2.27–20.29,P=0.001),maternal high-risk pregnancy(OR=1.53,95% CI:1.06–2.21,P=0.022),and maternal fruit intake ≥300 g per day during the first trimester(OR=1.70,95% CI:1.17–2.45,P=0.005) were associated with LBW.BMI ≥24 kg/m^2 of mother prior to delivery(OR=0.48,95% CI:0.32–0.74,P=0.001) and gestation ≥37 weeks(OR=0.01,95% CI:0.00–0.02,P〈0.034) were protective factors for LBW.Maternal hypertension(OR=3.36,95% CI:1.26–8.98,P=0.016),maternal high-risk pregnancy(OR=4.38,95% CI:3.26–5.88,P〈0.001),maternal meal intake of only twice per day(OR=1.88,95% CI:1.10–3.20,P=0.021),and mother liking food with lots of aginomoto and salt(OR=1.60,95% CI:1.02–2.51,P=0.040) were risk factors for PB.BMI ≥24 kg/m^2 of mother prior to delivery(OR=0.66,95% CI:0.47–0.93,P=0.018),distance of house from road ≥36 meters(OR=0.72,95% CI:0.53– 0.97,P=0.028),and living in rural area(OR= 0.60,95% CI:0.37–0.99,P=0.047) were protective factors for PB.Our study demonstrated some risk factors and protective factors for LBW and PB,and provided valuable information for the prevention of the conditions among newborns. 展开更多
关键词 case-control low birth weight newborn preterm birth risk factors
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Determinant of Low Birth Weight Infants: A Matched Case Control Study 被引量:3
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作者 Rosnah Sutan Mazlina Mohtar +1 位作者 Aimi Nazri Mahat Azmi Mohd Tamil 《Open Journal of Preventive Medicine》 2014年第3期91-99,共9页
Background: Low birth weight (LBW) is a well-known factor associated with neonatal mortality and has contributed to a range of poor health outcomes. Thus, the objective of this study was to determine factors associate... Background: Low birth weight (LBW) is a well-known factor associated with neonatal mortality and has contributed to a range of poor health outcomes. Thus, the objective of this study was to determine factors associated with LBW infants. Methods: A matched case control study was conducted in Universiti Kebangsaan Malaysia. Data of deliveries were obtained from Total Hospital Information System and medical records. All registered deliveries from January to June 2012 were used as sample populations. There were 180 pairs of cases and controls matched on babies’ gender. Fourteen variables were analyzed: maternal age, ethnicity, gravida, parity, gestational age, maternal booking weight, height and body mass index (BMI), history of low birth weight infants, birth interval, booking hemoglobin levels, hypertension, diabetes mellitus and mode of delivery. Results: Younger mother (t = 6.947, p < 0.001), lower booking BMI (t = 3.067, p = 0.002), prematurity (t = 12.324, p < 0.001), history of LBW infants (OR = 3.0, p = 0.001), LSCS (OR = 0.06, p = 0.001) and current hypertension (OR = 3.1, p = 0.008) were found significant in bivariate analysis. Multivariable conditional logistic regression identified younger maternal age (AOR = 2.9, 95% CI = 1.86 -4.51, p 13.58, p = 0.045), prematurity (AOR = 2.4, 95% CI = 1.79 -3.26, p < 0.001), and current hypertension (AOR = 4.5, 95% CI = 1.06 -19.22, p = 0.041) as significant factors associated with LBW infants. Conclusion: Younger maternal age, history of LBW infants, prematurity and hypertension have been recognized as predictors of LBW infants. The importance of pre-pregnancy screening, early antenatal booking and proper identification of high risk-mother needs to be strengthened and enforced in effort to reduce incidence of LBW infants. 展开更多
关键词 Low birth WEIGHT MATERNAL FACTORS Matched CASE control
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APPROXIMATE OPTIMAL BIRTH CONTROL OF POTULATION SYSTEMS
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作者 W.L.Ohan 郭宝珠 《Systems Science and Mathematical Sciences》 SCIE EI CSCD 1990年第1期46-52,共7页
We consider optimal birth control for the McKendrick equation of population dyna-mics.It consists of optimizing a system described by a first order partial differential equationwith nonlo-cal bilinear boundary control... We consider optimal birth control for the McKendrick equation of population dyna-mics.It consists of optimizing a system described by a first order partial differential equationwith nonlo-cal bilinear boundary control.Approximate minimum principles are obtained usingEkeland’s vari ational principle. 展开更多
关键词 OPTIMAL birth control McKendrick equation population dynamics nonlocal BILINEAR boundary control APPROXIMATE minimum PRINCIPLE Ekeland’s variational PRINCIPLE
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Risk Factors for Birth Defects: A Conditional LogisticRegression Analysis of a Case-Control Study in Guang-dong Province of China
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作者 王志瑾 穆荔 《Journal of Reproduction and Contraception》 CAS 1999年第3期170-175,共6页
Information was obtained from the same questionnaire (23 risk factors listed) of cases and controls. We used a multivariate logistic model, which described variables significantly increased risk of birth defects.... Information was obtained from the same questionnaire (23 risk factors listed) of cases and controls. We used a multivariate logistic model, which described variables significantly increased risk of birth defects. The risk factors included maternal educational levels, medicine taken during pregnancy and antenatal care. It was suggested to strengthen antenatal care was the main preventive measure against birth defects. 展开更多
关键词 birth defects Risk factors Case control study Conditional logistic regression Antenatal care
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Birth outcomes and pregnancy complications of women with uterine leiomyoma—a population-based case-control study
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作者 Ferenc Bánhidy Nándor ács +1 位作者 Erzsébet H. Puhó Andrew E. Czeizel 《Health》 2010年第6期566-574,共9页
Objective Uterine leiomyoma is not a rare pathological condition in pregnant women;thus the aim of the study was to evaluate the recent progress in the treatment of these pregnant women on the basis of the association... Objective Uterine leiomyoma is not a rare pathological condition in pregnant women;thus the aim of the study was to evaluate the recent progress in the treatment of these pregnant women on the basis of the association of leiomyoma in pregnancy (LP) with pregnancy complications and birth outcomes including structural birth defects, i.e. congenital abnormalities (CA) in the offspring. Design Cases with CA and matched controls without CA in the population-based Hungarian Case-Control Surveillan- ce System of Congenital Abnormalities (HCC SCA) were evaluated. Only women with prospectively and medically recorded LP in prenatal maternity logbook and medically recorded birth outcomes (gestational age, birth weight, CA) were included to the study. Setting the HCCSCA, 1980-1996 contained 22,843 cases with CA and 38,151 matched controls without CA. Population Hungarian pregnant women and their informative offspring: live births, stillbirths and prenatally diagnosed malformed fetuses. Methods Comparison of birth outcomes of ca- ses with matched controls and pregnancy com- plications of pregnant women with or without LP. Main outcome measures Pregnancy complications, mean gestational age at delivery and birth weight, rate of preterm birth, low birthweight, CA. Results A total of 34 (0.15%) cases had mothers with LP compared to 71 (0.19%) controls. There was a higher incidence of threatened abortion, placental disorders, mainly abruption placentae and anaemia in mothers with LP. There was no significantly higher rate of preterm birth in the newborns of women with LP but their mean birth weight was higher and it associated with a higher rate of large birthweight newborns. A higher risk of total CA was not found in cases born to mothers with LP (adjusted OR with 95% CI = 0.7, 0.5-1.1), the spe- cified groups of CAs were also assessed versus controls, but a higher occurrence of women with LP was not revealed in any CA group. Con- clusions Women with LP have a higher risk of threatened abortion, placental disorders and anaemia, but a higher rate of adverse birth outcomes including CAs was not found in their offspring. 展开更多
关键词 Uterine LEIOMYOMA in Pregnant WOMEN Pregnancy Complications PRETERM birth Large birth Weight Congenital Abnormalities POPULATION-BASED CASE-control Study
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基于“五脏生克制化辨证模式”的心律失常病机及组方探讨
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作者 丛紫东 苏宇情 +3 位作者 陈金红 邓芳隽 李晓凤 杜武勋 《天津中医药》 2025年第7期849-854,共6页
“五脏生克制化辨证模式”是在气化理论、五运六气理论指导下,建立的五脏功能兼顾的辨证模式。该模式以气化为基础,整合自然气化、人体气化、愈病气化过程,通过审视五脏之间的生、克、复关系,准确把握疾病的病机核心,指导临床疾病诊疗... “五脏生克制化辨证模式”是在气化理论、五运六气理论指导下,建立的五脏功能兼顾的辨证模式。该模式以气化为基础,整合自然气化、人体气化、愈病气化过程,通过审视五脏之间的生、克、复关系,准确把握疾病的病机核心,指导临床疾病诊疗。基于“五脏生克制化辨证模式”概括心律失常核心病机为“中轴不健,心肾不交”,即心悸非独心病,实则五脏之气皆病,而以中轴窒塞,水火交通无路为要。治疗以“斡旋中土,交通心肾,枢转气机”为主,连桂宁心汤随证加减,以期为临床辨治心律失常提供参考。五脏生克制化辨证模式全面统筹天人的气化过程,可为临床诊疗心律失常及其他内科疾病提供新的理论指导。 展开更多
关键词 心悸 心律失常 连桂宁心汤 五运六气 五脏生克制化辨证模式
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我国出生缺陷防控领域的进展、机遇与挑战
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作者 田亚平 张蔓丽 周红辉 《解放军医学院学报》 2025年第1期16-21,共6页
我国是出生缺陷高发国家,出生缺陷防控对提高出生人口质量、保障生育政策落实落地具有重大意义。近年来随着我国出生缺陷高危风险因素扩增,如何制定适合中国现阶段不同地域特色的出生缺陷防控策略是未来出生缺陷防控领域面临的共同挑战... 我国是出生缺陷高发国家,出生缺陷防控对提高出生人口质量、保障生育政策落实落地具有重大意义。近年来随着我国出生缺陷高危风险因素扩增,如何制定适合中国现阶段不同地域特色的出生缺陷防控策略是未来出生缺陷防控领域面临的共同挑战。我国一直致力于出生缺陷防控能力的提升,在该领域取得了一系列重要进展。笔者结合自身工作,总结了我国出生缺陷防控工作在医疗检测技术、社会管理等方面的新进展,并对该领域未来的机遇和挑战进行述评。 展开更多
关键词 出生缺陷 出生缺陷防控 遗传学检测技术 妇幼健康服务 社会服务
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两阶段生产服务库存系统的性能分析与库存策略的优化控制
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作者 岳德权 迟艳伟 魏伊宁 《工程数学学报》 北大核心 2025年第5期806-822,共17页
研究了一个由生产中心和分销中心组成的两阶段生产–库存排队系统,针对生产中心提出了一个新的生产策略—(rQ+m,KQ)生产策略,分销中心采取(s,Q)库存补货策略。顾客到达过程为泊松过程,补货时间、服务时间和生产时间均服从指数分布。首先... 研究了一个由生产中心和分销中心组成的两阶段生产–库存排队系统,针对生产中心提出了一个新的生产策略—(rQ+m,KQ)生产策略,分销中心采取(s,Q)库存补货策略。顾客到达过程为泊松过程,补货时间、服务时间和生产时间均服从指数分布。首先,建立连续时间Markov模型,利用拟生灭过程理论,求出了系统稳态平衡条件。其次,通过求解修正系统模型的稳态概率分布,获得了系统的稳态概率分布的乘积解,进而给出了系统的稳态性能指标的计算公式。最后,以系统平均费用最小为目标,利用遗传算法计算系统的最优库存策略和平均费用。通过数值算例对系统采取的4种生产库存策略进行了比较分析,结果显示:在一定的条件下,生产中心采取(m,KQ)策略时,系统的平均费用更小。 展开更多
关键词 生产库存系统 排队系统 (s Q)策略 拟生灭过程 损失销售 库存控制
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不同促排卵方案在卵巢预期低反应患者中的应用效果分析
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作者 邓卉卉 窦倩 +5 位作者 郭沛沛 刘欢欣 项云改 耿旭景 李朋粉 张丹 《医学研究与战创伤救治》 北大核心 2025年第6期625-631,共7页
目的比较短效长方案、拮抗剂方案、高孕激素促排卵(PPOS)在卵巢预期低反应患者中的应用效果,为临床卵巢低反应人群促排卵方案的选择上提供参考。方法采用回顾性队列研究,收集2015年1月至2023年12月在郑州大学第二附属医院生殖医学部行... 目的比较短效长方案、拮抗剂方案、高孕激素促排卵(PPOS)在卵巢预期低反应患者中的应用效果,为临床卵巢低反应人群促排卵方案的选择上提供参考。方法采用回顾性队列研究,收集2015年1月至2023年12月在郑州大学第二附属医院生殖医学部行体外受精(IVF)或卵胞质内单精子注射(ICSI)助孕的患者资料,按波塞冬(POSEIDON)标准分组,纳入POSEIDON 3组和4组,促排卵采用短效长方案、拮抗剂方案、PPOS方案,分析3种促排卵方案的患者基础数据和临床结局及达妊娠时间,应用Kaplan-Meier分析比较3种方案之间达妊娠时间的长短。结果共纳入IVF/ICSI助孕1330个周期,其中POSEIDON 3组328个周期(其中短效长方案组79个周期,拮抗剂方案组128个周期,PPOS方案组121个周期),POSEIDON 4组1002个周期(其中短效长方案组100个周期,拮抗剂方案组380个周期,PPOS方案组522个周期)。在POSEIDON 3组和4组人群中,短效长方案组的周期取消率、达妊娠时间均低于拮抗剂方案组与PPOS方案组(P<0.05),不同方案的累积活产率差异无统计学意义(P>0.05)。结论促排卵方案选择短效长方案可能缩短卵巢低反应人群妊娠时间,为临床中卵巢低反应人群的治疗策略制定提供参考。 展开更多
关键词 POSEIDON分组 预期低反应 累积活产率 达妊娠时间 控制性超促排卵
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兰州市2017—2023年婚前医学检查趋势及空间聚集性特征分析
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作者 潘丽 梁芳 +2 位作者 王春萍 侯少莹 李萍 《中国优生与遗传杂志》 2025年第1期243-247,共5页
目的通过分析兰州市2017—2023年婚前医学检查趋势及空间聚集性特征,为全市下一步做好出生缺陷一级防控工作提供一定的科学依据。方法收集全国妇幼卫生年报中《婚前保健年报》数据,分析全市婚前医学检查率、疾病检出率及不同性别下疾病... 目的通过分析兰州市2017—2023年婚前医学检查趋势及空间聚集性特征,为全市下一步做好出生缺陷一级防控工作提供一定的科学依据。方法收集全国妇幼卫生年报中《婚前保健年报》数据,分析全市婚前医学检查率、疾病检出率及不同性别下疾病检出情况,采用Geoda软件对婚前医学检查水平进行全局自相关和空间局部自相关分析。结果全市2017—2023年婚前医学平均检查率21.70%,且呈逐年升高趋势(χ^(2)=2004.735,P<0.000);疾病平均检出率为4.00%,呈波动性升高趋势(χ^(2)=102.97,P<0.001);检出疾病以生殖系统疾病和指定传染病为主,男性疾病检出占比明显低于女性。2017—2023年全市婚检情况存在空间负相关,但差异均无统计学意义(P<0.05)。结论兰州市婚前医学检查率较低,下一步需要继续加强社会宣传引导和健康科普力度,同时要加强民政、卫生行政部门之间的沟通协调共同创建一站式婚育服务模式,做好出生缺陷的一级防控工作。 展开更多
关键词 婚检率 疾病检出 出生缺陷防控 空间聚集性
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面向无人机辅助边缘计算的卸载任务准入控制机制
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作者 徐渊博 任静 +2 位作者 王亮 符宁 於志文 《计算机工程》 北大核心 2025年第2期54-64,共11页
针对边缘计算网络中用户需求的动态性以及大量用户卸载任务导致的通信阻塞问题,以最大化服务商收益且保证用户服务质量(QoS)为目标,提出一种面向无人机(UAV)辅助边缘计算系统的卸载任务准入控制机制。首先,根据用户信道质量、基站通信... 针对边缘计算网络中用户需求的动态性以及大量用户卸载任务导致的通信阻塞问题,以最大化服务商收益且保证用户服务质量(QoS)为目标,提出一种面向无人机(UAV)辅助边缘计算系统的卸载任务准入控制机制。首先,根据用户信道质量、基站通信带宽等因素设置服务器通信阈值,以避免任务的传输时延过高,其中未与基站建立连接的用户可以选择将任务卸载到UAV或在终端设备上直接处理任务。其次,考虑UAV资源的有限性及运行成本,设置UAV接收任务的最优阈值,且UAV仅对任务进行预处理,将预处理后的任务进一步卸载到基站,以降低任务的处理时延。将用户卸载过程建模为生灭过程,使用矩阵几何方法推导出系统稳定状态的概率分布及用户的预期收益,进而求解出UAV接收任务的最优阈值,最终求解出任务高并发情况下UAV最优价格及其最大收益。仿真实验结果表明,求解算法在服务商收益、用户QoS等方面具有显著的优势。 展开更多
关键词 边缘计算 任务卸载 准入控制 无人机(UAV) 生灭过程
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宫腔镜下子宫内膜息肉切除术后应用左炔诺孕酮宫内节育系统的临床效果
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作者 宁下 《中外医药研究》 2025年第9期19-21,共3页
目的:探究宫腔镜下子宫内膜息肉切除术后应用左炔诺孕酮宫内节育系统的效果。方法:选取北海市第二人民医院2023年3月—2024年3月收治的60例行宫腔镜下子宫内膜息肉切除术的患者,利用随机抽签法将其分为观察组(30例)与对照组(30例)。两... 目的:探究宫腔镜下子宫内膜息肉切除术后应用左炔诺孕酮宫内节育系统的效果。方法:选取北海市第二人民医院2023年3月—2024年3月收治的60例行宫腔镜下子宫内膜息肉切除术的患者,利用随机抽签法将其分为观察组(30例)与对照组(30例)。两组均行宫腔镜下子宫内膜息肉切除术治疗,术后观察组实施左炔诺孕酮宫内节育系统治疗,对照组给予地屈孕酮片。对比两组治疗后的子宫内膜改善情况,子宫内膜组织雌激素受体(ER)、孕激素受体(PR),血清性激素水平及治疗后并发症发生率。结果:治疗后,观察组子宫内膜厚度、血红蛋白水平改善效果优于对照组,ER及PR水平均低于对照组,血清性激素指标水平均优于对照组,术后并发症发生率相对对照组更低(P<0.05)。结论:宫腔镜下子宫内膜息肉切除术后应用左炔诺孕酮宫内节育系统可降低子宫内膜厚度,改善机体功能,进而减少不良事件的发生。 展开更多
关键词 宫腔镜 子宫内膜息肉切除术 左炔诺孕酮宫内节育系统
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