有源Non-Foster负阻匹配网络及其天线应用

传统的匹配网络通过串联电感实现,往往只能在点频实现理想匹配,使得天线带宽受到极大的限制。针对小型化天线的宽带匹配问题展开研究,利用有源非福斯特(non-foster)网络实现等效负阻抗匹配网络,打破电小天线的品质因数限制,可以在很宽的频带内抵消电小天线的电容,实现小型化天线的宽带匹配。设计并加工测试了一种针对手持设备的终端天线负阻匹配网络,实现了单极子天线高度为1/10波长的情况下,不附加任何结构,驻波比在400~700 MHz频段内小于2.5,天线辐射效率大于75%。

Robust stability characterizations of active metamaterials with non-Foster loads

Active metamaterials incorporating with non-Foster elements have been considered as one of the means of overcoming inherent limitations of the passive counterparts, thus achieving broadband or gain metamaterials. However, realistic active metamaterials, especially non-Foster loaded medium, would face the challenge of the possibility of instability. Moreover,they normally appear to be time-variant and in unsteady states, which leads to the necessity of a stability method to cope with the stability issue considering the system model uncertainty. In this paper, we propose an immittance-based stability method to design a non-Foster loaded metamaterial ensuring robust stability. First, the principle of this stability method is introduced after comparing different stability criteria. Based on the equivalent system model, the stability characterization is used to give the design specifications to achieve an active metamaterial with robust stability. Finally, it is applied to the practical design of active metamaterial with non-Foster loaded loop arrays. By introducing the disturbance into the nonFoster circuit（NFC）, the worst-case model uncertainty is considered during the design, and the reliability of our proposed method is verified. This method can also be applied to other realistic design of active metamaterials.

From Fostering to Delusional Disorder of Filiation

Introduction: Fostering is a widespread practice in West Africa. It played an essential role in the circulation of children. The failure of its community regulation, not compensated by a legal framework, has made its practice precarious. Observation: A case study was conducted on Dior, who was hospitalised in a psychiatric ward for a delusional disorder of filiation. Dior was entrusted to her maternal grandmother and aunt at ages 2 and 9. During these fosterings, the place of the symbolic father was not substituted, causing a void that challenged her imagination. The outcome was an inscription in a genealogy where she had found herself with prestigious parents. Discussion: Fostering has strongly disrupted the family dynamics in Dior’s case. One of her options was to assume the paternal function, the use of which was perceived as a defiance or even a transgression. This same function would be a starting point of a psychosis whose filial character would only be an attempt at rectification where reality and imagination collide. Conclusion: Our study reveals the importance of stable parental figures at stake in fostering contexts, which constitute a risk factor for the development of a subsequent psychosis.

Characteristics of Emission Non-nulling Pulsars Through Simulation

We investigate the population and several properties of radio pulsars whose emission does not null(non-nulling)through simulation of a large pulsar sample.Emission from a pulsar is identified as non-nulling if(i)the emission does not cease across the whole pulse profile,and(ii)the emission is detectable.For(i),we adopt a model for switching in the plasma charge density,and emission persists if the charge density is non-zero.For(ii),we assume that detectable emission originates from source points where it is emitted tangentially to the magnetic field-line and parallel to the line-of-sight.We find that pulsars exhibiting non-nulling emission possess obliquity angles with an average of 42°.5,and almost half the samples maintain a duty cycle between 0.05 and 0.2.Furthermore,the pulsar population is not fixed but dependent on the obliquity angle,with the population peaking at 20°.In addition,three evolutionary phases are identified in the pulsar population as the obliquity angle evolves,with the majority of samples having an obliquity angle between 20°and 65°.Our results also suggest that emission from a pulsar may evolve between nulling and non-nulling during its lifetime.

Fostering New Productive Forces to Empower Drivers of New Growth

The latest CPC Central Committee plenum laid out measures to foster new and quality productive forces in pursuit of high-quality development.HIGH-quality development is China’s primary task in building a modern socialist country in all respects.For this purpose,at its third plenary session in July this year,the 20th Central Committee of the Communist Party of China(CPC)declared its resolve to“improve the institutions and mechanisms for fostering new quality productive forces in line with local conditions…Relevant rules and policies will be improved to accelerate the formation of relations of production that are more compatible with new quality productive forces,and to channel various types of advanced production factors toward the development of new quality productive forces.These steps will help realize a significant increase in total factor productivity.”

International Exhibitions of Cultural Property Fostering Exchanges and Mutual Learning among Civilizations China Tour of Masterpieces in Miniature:Treasures from the Rosalinde and Arthur Gilbert Collection in the Victoria and Albert Museum

The two-year"Masterpieces in Miniature"tour across seven major museums in China has fully demonstrated the role of museums as grand platforms for intercultural dialogue and the blending of world civilizations.This tour has successully opened a new chapter in cultural exchanges between China and the UK,contributing to global museum collaboration and the mutual enrichment of world civilizations.

Advances in treatment strategies for non–clear cell renal cell carcinoma

Renal cell carcinoma is the sixth most commonly diagnosed cancer in men and the tenth in women,with clear cell renal cell carcinoma accounting for nearly 75%of cases.The remaining 25%consists of non–clear cell renal cell carcinoma,a diverse and less prevalent group.Although current treatments for clear cell types are well-defined,progress in treating non–clear cell renal cell carcinoma has been limited owing to its heterogeneity and rarity,relying primarily on findings from small-scale phase Ⅱ clinical trials.This review examined recent advancements in the treatment of non–clear cell renal cell carcinoma,particularly in the areas of immunotherapy and targeted therapy.

Non-HDL-C水平和ApoB/ApoA1比值与初发心肌梗死的相关性研究

目的探究不同非高密度脂蛋白胆固醇(non-HDL-C)水平初次急性心肌梗死患者的临床特征及载脂蛋白B(Apo B)和载脂蛋白A1(Apo A1)比值以及non-HDL-C与冠状动脉(冠脉)病变程度的相关性。方法选取2021年12月至2023年4月于重庆医科大学附属第一医院心内科入院治疗的首次诊断为急性心肌梗死且行冠脉造影的患者410例。计算Apo B/Apo A1比值及non-HDL-C,根据non-HDL-C三分位数分为低non-HDL-C组(≤2.89 mmol/L)、中non-HDL-C组(2.9~4.16 mmol/L)、高non-HDL-C组(≥4.17 mmol/L),比较三组患者一般临床资料及冠脉病变特点的差异性。另采用Spearman秩相关和二元Logistics回归分析non-HDL-C水平、Apo B/Apo A1对冠脉病变严重程度的影响。结果与低non-HDL-C组相比,中non-HDL-C组和高non-HDL-C组患者年龄更小(P<0.05);高non-HDL-C组较另外两组具有更高水平的体质指数(BMI)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、ApoB、ApoA1、ApoB/ApoA1、白蛋白、γ-谷酰转移酶、尿酸(P<0.05)。三组间左前降支病变、回旋支病变、多支血管病变、Gensini评分相比,差异有统计学意义(P<0.05)。偏相关分析显示Apo B/Apo A1和non-HDL-C均与多支血管病变、Gensini评分呈正相关(P<0.05);多因素二元Logistics回归分析显示ApoB/ApoA1比值(OR=3.149,95%CI:1.209~8.201,P=0.019)、non-HDL-C≥4.17 mmol/L(OR=4.199,95%CI:1.524~11.565,P=0.006)是多支血管病变的独立危险因素。结论在初次急性心肌梗死青年患者有冠脉病变或(冠状动脉粥样硬化性心脏病)危险因素中,更应关注ApoB/ApoA1及non-HDL-C,同时严格控制non-HDL-C是心肌梗死患者潜在的降脂目标。

基于Non stationary-CNN-Transformer的海浪有效波高预测

针对海浪有效波高序列波动性、随机性较强,难以精确预测以及模型无法高效挖掘深层特征间关系的问题,提出一种基于Non stationary-CNN-Transformer模型的海浪有效波高预测方法。首先,使用平稳化模块减弱海浪时序数据的非平稳性;其次,利用一维卷积神经网络(CNN)提取相关数据间的深层特征并构建特征向量;最后,使用含有平稳性注意力的Transformer描述波高序列的时间依赖性捕捉到序列之间的全局关系,通过逆归一化处理后获得有效波高预测结果。该方法可消除海浪时序数据的非平稳性,提升数据的预测效果,并具有优异的特征提取能力且善于处理大规模时间序列数据。在实验中应用澳大利亚的浮标实测数据,通过7组对比实验分别预测0.5、3、6、12和24 h的有效波高,对所提模型进行全方位、多角度的验证。算例研究结果表明,该文所提模型在不同时间段精度有明显提升。

建设高质量职业教育体系增强教育强国人才竞争力——学习贯彻落实全国教育大会精神笔谈

习近平总书记在全国教育大会上强调,我们要建成的教育强国是中国特色社会主义教育强国,应当具有强大的思想引领力、人才竞争力、科技支撑力、民生保障力、社会协同力、国际影响力。在教育强国建设中,人才是职业教育支撑教育强国建设的基础力量。培养大国工匠、能工巧匠、高技能人才,是职业教育的人才培养目标和重要着力点;立德树人、德技并修是职业教育人才培养的根本要求;构建职普融通、产教融合的职业教育体系,是职业教育服务支撑教育强国建设的核心任务和重要路径。本刊聚焦建设高质量职业教育体系,增强教育强国人才竞争力,邀请专家学者从不同侧面阐述见解和建议,以期为职业教育领域学习贯彻落实全国教育大会精神提供参考。

Progress in the Use of Glucocorticoids and Biological Agents in Non-Infectious Uveitis

One of the main immune-mediated diseases that lead to avoidable blindness is non-infectious uveitis. Glucocorticoids are the first-line therapy choice for noninfectious uveitis;however, biologics are also showing promise in the management of this condition. The description of glucocorticoid and biologic usage in non-infectious uveitis is the main topic of this paper.

Research Progress on Different Endoscopic Hemostatic Regimens for the Treatment of Acute Non-Varicose Upper Gastrointestinal Bleeding

Acute upper gastrointestinal hemorrhage is a highly prevalent clinical condition, with the majority of cases representing acute non-variceal upper gastrointestinal hemorrhage. With the advancement of modern medicine, endoscopy has become an indispensable tool in the diagnosis and treatment of various diseases. In order to achieve optimal results in the endoscopic treatment of non-variceal upper gastrointestinal bleeding, it is essential to make an accurate and timely diagnosis and select the most appropriate treatment method. This article introduces the definition of acute non-variceal upper gastrointestinal bleeding (ANVUGIB) and the importance of endoscopic treatment for this disease. It then presents an overview of various assessment systems for ANVUGIB and an overview of endoscopic advances in thermal coagulation, mechanical hemostasis, and topical pharmacological injection hemostasis for three aspects of ANVUGIB-related bleeding. In particular, this article discusses the therapeutic efficacy and safety of different treatment options for non-variceal upper gastrointestinal bleeding, as well as the advantages and limitations of these treatment options in managing this disease.

研究生教育立德树人成效评价工具初探——基于学生过程体验的视角

立德树人成效是检验研究生教育工作的根本标准。研究生教育的立德树人在育人目标、育人价值及育人途径上具备特殊性,其成效可从学生体验的教育过程要素对其学习和发展的促进作用中得到评价。本文基于严格的量表设计程序,从过程体验视角开发出包含导师育人、课程育人、管理服务育人三个分量表的研究生教育立德树人成效综合评价工具,并通过了系列检验程序。建议科学使用本评价工具,并服务于形成性和诊断性评价的目的。

创新驱动发展 思政引领未来——船舶与海洋工程流体力学课程思政教学改革与实践探索

思政教育是高校立德树人之根本,也是培养学生综合素质和能力的有效途径。该文以船舶与海洋工程流体力学课程为例,探索在新工科背景下将思政教育模式应用于专业课教学的途径,从学科背景、教学理念、教学目标和教学途径四个方面展开实践研究,实现知识传授与思政引领相结合。将思政教育模式应用于专业课教学,能在传授知识的同时更好地激发学生的爱国主义情怀与文化自信,为国家培育栋梁之才。

新时代高校“一站式”学生社区党支部建设探研

高校基层党支部既是贯彻落实党中央决策部署的“神经末梢”,落实高校立德树人根本任务的基本组织保障,又是做好“一站式”学生社区各项工作的“战斗堡垒”,但高校基层党支部在“一站式”学生社区建设中发挥作用尚有需加强、改进之处。高校要进一步思考加强党支部基础性建设工作的方法,通过顶层设计、支部建设、管理与服务融合,探索以高质量、高标准助推“一站式”学生社区建设发展的途径,以更好地发挥党支部战斗堡垒作用。

新时代全面建成教育强国的指导思想——学习习近平总书记在全国教育大会上的重要讲话

新时代第二次全国教育大会在第四十个教师节到来之际召开,强调紧紧围绕立德树人根本任务,朝着建成教育强国战略目标扎实迈进。习近平总书记发表重要讲话,站在党和国家事业发展全局的战略高度,全面总结了新时代教育事业取得的历史性成就、发生的格局性变化,系统阐释了教育强国的科学内涵和基本路径,深刻阐述了教育强国建设要正确处理好的重大关系,统一部署了全面推进教育强国建设的战略任务和重大举措。习近平总书记的重要讲话是指导新时代新征程教育工作的纲领性文献,深刻回答了“为什么建设教育强国”“建设什么样的教育强国”“怎样建设教育强国”等重大理论与实践命题,为建设教育强国指明了前进方向、提供了根本遵循。

Investigating Non-Compliance with COVID-19 Vaccination through Hesitancy, Refusal, and Access Limitation: A Community-Based Survey from the Democratic Republic of the Congo

Introduction: Vaccination plays a pivotal role in mitigating the repercussions of the COVID-19 pandemic. However, vaccination campaigns encounter obstacles, especially in developing countries like the Democratic Republic of the Congo (DRC). This study aimed at investigating the roles of vaccine hesitancy, refusal, and access barriers, while identifying individual-level factors associated with non-vaccination in Mbujimayi, DRC. Methods: A community-based cross-sectional survey was conducted in three health districts and included 1496 residents. Attitudes and behaviors related to seeking COVID-19 vaccination were assessed using a standardized questionnaire. Hierarchical logistic regression modeling was used to assess factors potentially affecting non-compliance with vaccination. Results: Among participants (median age = 33, IQR = 23.3, M/F sex ratio = 0.7), 60% displayed misconceptions about COVID-19 or its vaccine, while only 35.2% perceived COVID-19 as a significant health threat. Vaccination coverage was estimated at 49.1% (95% CI: 47.5;52.6), with 71.8% of vaccinated individuals having received one dose. Among the unvaccinated individuals, 50.9% expressed no intention to be vaccinated in the future, citing hesitation (30.4%) or refusal (39.6%) mainly due to side effects or distrust of vaccines. Conversely, 32.7% of the unvaccinated persons expressed access barriers despite willingness to be vaccinated. Misconceptions about COVID-19 and its vaccines were the main drivers of vaccination non-compliance. Conclusion: These findings demonstrate significant vaccine non-compliance driven by hesitancy, refusal, and access barriers. Strategies to enhance vaccination coverage and pandemic preparedness should address misconceptions, sociodemographic barriers, and geographic disparities.

The Interventional Capacity of Community Health Volunteers for Screening and Linkages of Non-Communicable Diseases in Nyeri County, Kenya

Non-communicable diseases (NCDs) account for 63% of mortalities. Approximately 80% of these NCD-related deaths occur in LMICs. A quasi-experimental study utilizing a non-equivalent pre-and post-test was conducted from May 2022 to March 2023 with 370 study participants. Multistage cluster and random sampling were used to select ten community units, and therefore, 150 CHVs were chosen for the control unit, and 150 were used to form the interventional group. Data was collected from the KOBO app. Six (6) homogenous FGDs comprised ten members, and 10 KII were conducted across study sites. Quantitative data was analyzed using SPSS version 28.0, and qualitative data was audio-recorded, transcribed, and analyzed via N-Vivo 12. The study shows that 59.3% of respondents have minimal information, and 92.7% (n = 139) have no clear understanding of NCDs, with a pre-intervention capacity of 48.8%. Independent sample t-test showed a significant difference in capacity from a pre-intervention average of 48.75 (SD ± 5.7)%, which increased to 68.28 (SD ± 7.6)%, p < 0.001. A well-designed community interventional model plays a pivotal role in grassroots healthcare delivery but requires optimization for NCD management.

基于CIPP模型的新时代高校思政教育评价体系构建研究

CIPP评价体系的构建与应用,对于新时代高校思政教育大有裨益。当前,高校思政教育评价体系存在的功利化倾向导致思政课教学评价地位弱化、片面性评价引发思政课教学评价主体的单一化、重结果轻过程现象造成评价方式的静态化等问题。高校思政课应当在目标导向上强化价值引领,践行立德树人根本使命;在内容要素上聚焦关键问题,构建科学精准的考核评价体系;在评价机制上突出高效兼顾,深化多元协同评价;在优化反馈上注重持续完善,提升育人综合成效;在输入评价上满足资源配置,完善综合评价方法;在过程评价中促成动态育人,凸显思政课程特色。

Roles of Community Pharmacists in Screening and Disseminating of Information about Non-Steroidal Anti-Inflammatory Drugs Risks: Implications for Drug Safety Assessment

Background: The increasing use of non-steroidal anti-inflammatory drugs (NSAIDs) both on prescription and over the counter raises a major global health concern because of the risks associated with their use if no proper guidance is given by the health care provider. This study assessed the roles of community pharmacists in screening and disseminating information about the risks associated with NSAID use in Zambia. Methodology: This was a national cross-sectional study in which a structured self-administered questionnaire was administered to 245 registered community pharmacists in Zambia. Stata/BE, version 15.1 (Stata Corporation, College Station, Texas, USA) and multivariate logistic regression model was used to determine factors associated with information dissemination about ADRs of NS-NSAIDs. Results: 231 of the 245 distributed questionnaires were returned giving a response rate of 94.3%. All (100%) participating community pharmacists claimed to have practiced dispensing NSAIDs. However, only 26 (11.0%) and 71 (30.8%) regularly screened for risk factor of selective COX-2 NSAIDS (SC2-NSAIDS) and non-selective NSAIDS (NS-NSAIDs) respectively. Information dissemination on adverse drug reactions (ADRs) of SC2-NSAIDS was regularly provided by only 22 (9.5%) of pharmacists while that of NS-NSAIDs was regularly provided by 49 (21.2%). In the multivariate logistic regression model, being the owner of a pharmacy (AOR: 5.4, CI: 1.84 - 16.4) was significantly associated with information dissemination about ADRs of NS-NSAIDs while an hour increase in the working hours per day (AOR: 0.9, CI: 0.64 - 0.95) was associated with less likelihood of information dissemination. Conclusion: Pharmacists working in community pharmacies in Zambia did not regularly screen and disseminate information about the risks associated with NSAID use. Therefore, pharmacists should be able to screen and monitor patients at risk and be aware of the majority of risk factors while dispensing NSAIDs to minimize the associated complications.