Method to calculate fatigue fracture life of control fissure in perilous rock

Rupture and safety of perilous rock are dominated by control fissure behind perilous rock block. Based on model-Ⅰ and model-Ⅱ stress strength factors of control fissure under acting of weight of perilous rock, water pressure in control fissure and earth- quake forces, method to calculate critical linking length of control fissure is established. Take water pressure in control fissure as a variable periodic load, and abide by P-M criterion, when control fissure is filled with water, establish the method to calculate fatigue fracture life of control fissure in critical status by contributing value of stress strength factor stemming from water pressure of control fissure in Paris＇s fatigue equation. Further, parameters （C and m） of sandstone with quartz and feldspar in the area of the Three Gorges Reservoir of China are obtained by fatigue fracture testing.

Life Extending Control of Helicopter Based on Dynamic Inversion

The purpose of using life extending control for Black Hawk UH-60 helicopter is to make a trade-off between the handling qualities and the service life of critical components. An increase in service life span results in enhanced safety and the reduction in maintenance costs. This paper presents a design methodology of life extending control for structural durability and high performance of mechanical system, which is based on an explicit dynamic inversion control scheme. A real-time nonlinear fatigue crack growth model is built to predict fatigue damage resulting from the impact of cyclic bending stress on rotor shaft, which serves as an indicator of service life. The 4-axis gainscheduled flight controller, whose gains are adjusted as a function of damage and flight velocity, is designed to regulate roll attitude, pitch attitude, vertical velocity and yaw rate. The nonlinear system simulation results show that the responses can meet the requirements on ADS-33 Level 1 handling qualities and that the 4-axis decoupling control is realized. As the damage increases, the tracking performance is slightly degraded, which results in smaller transients in bending moment response.

Effect of long-acting testosterone undecanoate treatment on quality of life in men with testosterone deficiency syndrome： a double blind randomized controlled trial

This study aimed to investigate the effect of intramuscular injection of testosterone undecanoate on overall quality of life （QoL） in men with testosterone deficiency syndrome （TDS）. A randomized controlled trial over a 12-month period was carried out in 2009. One hundred and twenty men aged 40 years and above with a diagnosis of TDS （serum total testosterone 〈12 nmol 1-1 and total Aging Male Symptom （AMS） scores ≥ 27） were invited to participate. Interventions comprised intramuscular injection of either placebo or 1000 mg testosterone undecanoate, given at weeks O, 6, 18, 30 and 42. This paper presents the secondary analysis of QoL changes measured in the scores of Short-Form-12 （SF-12） scale at baseline, weeks 30 and 48 after the first injection. A total of 56/60 and 58/60 men from the active treatment and placebo group, respectively, completed the study. At week 48, before adjusting for baseline differences, the QoL of men in the treatment group improved significantly in five out of the eight domains on SF-12. The physical health composite scores improved 4.0 points from a baseline of 41.9±7.0 in the treatment group compared to 0.8 point from a baseline of 43.7--7.1 in the placebo group （F=3.652, P=0.027）. The mental health composite scores improved 4.4 points from a baseline of 37.1±9.0 in the treatment group compared to 1.0 points from a baseline of 37.6±7.9 in the placebo group （F=4.514, P=-0.018）. After adjusting for baseline differences, significant improvement was observed in mental health composite scores, but not in physical health composite scores. LQng-acting testosterone undecanoate significanUy improved the mental health component of QoL in men with TDS.

The Relationship between the Trade Life Circle and the Takeover Type --The Inspection of the Efficiency of the Market for Corporate Control in China

According to the differences between operation and correlationship by both sides of the takeover in the market for corporate control, the takeover can be divided into three types--transverse takeover, longitudinal takeover and mixed takeover. Meanwhile, due to the activities of takeover taken by the companies in the different trade life circles adopting different takeover types, so their performances are different. Seeing about this relationship, you can effectively inspect the efficiency of the market for corporate control. Adopting298 stylebook data from the market for corporate control in China, and through empirical analyzing, it can see that because of the existing of the stock holding, the efficiency of the market for corporate control in China is not very high. The government tempts to adjust the industrial structure through merger and acquisition （M＆A）, but it urged the aim of state-owned economy forward strategic transfer difficult to come true. To solve the contradiction of ＂setting up of the stock holding＂ comes to no time to delay. ＇

Relationship of trait anger with quality of life and anger control among alcohol users

Background: Abstinence and anger control are promoted as ways to improve quality of life. Trait anger has been seen as one casual factor for alcohol related aggression and poor quality of life. The present study assesses anger control, quality of life and its relation with trait anger among alcohol dependents, abstainers & social drinkers. Material & Method: 150 subjects (50 subjects in each group) in the age range of 20 - 45 years were taken for the study. Semi-structured interview schedule, State-Trait Anger Expression Inventory-2, WHOQOL-BREF were administered in individual setting. Results: Dependent alcohol users and abstainers reported the significant impact of alcohol use on family & occupational functioning. Quality of life has correlation with anger control (in/out), trait anger, temperament & reaction in the control & abstainers group, whereas quality of life has negative correlation with trait anger expression among the alcohol group. Conclusions: Alcohol use has been associated with the trait anger expression and poor quality of life. It has implications for promoting alcohol abstinence, in improving quality of life and in anger control.

A Case Control Study of Subjective Quality of Life in Outpatients with Depression

Background: Depression is one of the leading causes of disability including impairment in the subjective Quality of Life (QOL) of the patient. Unfortunately, only a fraction receives the correct diagnosis and treatment in general practice. This study aims to determine the subjective Quality of Life of depressed patients. Method: A representative sample of adults, 18 years and above (100 each for cases and controls), were assessed for QOL using the World Health Organization Quality of Life instrument (WHOQOL-BREF). Respondents were also evaluated for socio-demographic factors. Major depressive disorder was assessed using the Mini International Neuropsychiatric Interview. Severity of depression was measured using Hamilton’s Rating Scale for Depression and global functioning was assessed with the Global Assessment of Functioning scale. Results: Majority of the participants were females (62.0%) and young with a mean age of 39.11 ± 12.40 years. Overall subjective QOL (P P P P P P Conclusion: The finding of the study showed that depression is a serious illness that affects the patient’s perception of the quality of his/her life. It is therefore very necessary to innovate better treatment modalities to reduce its burden.

An Investigation into the Life Cycle Cost of a Typical Computer Numerical Control Machine

This paper relates to a typical computer numerical control (CNC) machine, model FDXNC 128, and analyzes the payoff period quantitatively and forecasts the future maintenance cost and the evaluation of the economic benefit by using Life Cycle Cost (LCC) method and grey theory. The discussion shows conclusions that are beneficial to the production, management, and decision making of the enterprise.

The effects of an exercise program on health-related quality of life in postpartum mothers: A randomized controlled trial

Background and Objective: There is controversy on the psychological effects of postpartum exercise. The study aimed to evaluate the effectiveness of a postpartum exercise program on health-related quality of life and psychological well-being. Methods: We conducted a randomized controlled trial in Tokyo, Japan. The intervention groups participated in ball-exercise classes (weekly exercise of 90 minutes for four weeks) at three months postpartum. The exercise class included the following: 1) greeting and warm-up;2) aerobic exercise involving bouncing on an exercise ball 55 or 65 cm in diameter;3) rest and self-introduction;4) stretching and cooling down. The primary outcome measure was health-related Quality of Life (QOL) assessed using the MOS Short-Form 36-Item Health Survey (SF-36v2). The secondary outcome measures were Rosenberg Self-Esteem Scale (RSES) and Edinburgh Postnatal Depression Scale (EPDS) scores. The intervention group was compared to the control group at four months postpartum. Results: Of the 120 women screened, 110 women met the study criteria. Nine could not be included and the remaining 101 were allocated randomly into intervention and control groups (50 and 51 participants respectively). Analysis of covariance adjusting for baseline values indicated that the SF36 subscales of physical functioning (p = 0.018) and vitality (p = 0.016) significantly improved in the intervention group compared to the control group, although there were no significant differences between the groups in the SF36 Physical Component Summary (PCS) and Mental Component Summary (MCS) scores. The RSES increased in the intervention group (p = 0.020) compared to the control group. No significant group differences were observed in EPDS scores. Conclusions: The postpartum exercise class program provided to healthy postpartum women appears to have contributed to promoting health-related QOL and self-esteem.

药食同源理论及其在航天营养健康研究中的应用

载人航天飞行中面临的重力场变化、辐射、狭小空间孤闭隔离、噪声及生物节律变化等航天特因环境给维持航天员机体营养健康带来了挑战。根据载人航天实践,综述了航天特因环境下机体适应性变化,阐述了药食同源在航天营养健康保障中的应用预先研究现状,分析并提出了药食同源在支持未来载人深空探测方面的潜在应用价值。

三电平辅助变流器寿命优化控制

辅助变流系统是动车组车辆上关键的电气组成部分,主要为空调机组、风机、照明等交流负载提供稳定的三相电源。结温是影响动车组三电平辅助变流器IGBT(Insulated-gate Bipolar Transistor)模块寿命的主要因素。为了提高动车组三电平中点钳位(Neutral-Point Clamped,NPC)型辅助变流器寿命,提出一种降低结温的模型预测电流控制(Model Predictive Current Control,MPCC)策略。首先,考虑传统MPCC在每个采样周期需要代入27个电压矢量循环计算,计算量较大,因此将三电平基本电压矢量划分在间隔60°的6个扇区中,通过计算电压矢量在两相静止坐标下的相角,进而判断参考电压矢量所处扇区,将备选矢量数目从27缩减至10,减少了计算量;其次,传统MPCC直接应用于动车组辅助变流器会使IGBT模块的结温较高,老化速度加快,对变流器安全稳定运行产生不可预测的损害,本文对IGBT模块的开关损耗和导通损耗进行近似等效,得到了和集射极电压、集电极电流相关的功率损耗因子。通过预测每相电流的方向,进而预测IGBT模块的开关和导通情况,动态加入功率损耗因子,并在代价函数中约束每相IGBT及其续流二极管(Free Wheeling Diode,FWD)的功率损耗,使得最优电压矢量在降低功率损耗的同时保证一定的控制性能。通过仿真与实验验证,本文所提方法相比传统MPCC策略降低了功率器件的结温,提高了变流器寿命。

政府审计与国有企业ESG表现

以2010—2021年我国沪深A股国有上市公司为研究样本,基于审计署央企审计活动,对政府审计与国有企业ESG表现的影响效应进行实证研究。研究结果显示:政府审计对国有上市公司的ESG表现具有明显的促进作用,这一结论在经过一系列稳健性检验后没有发生变化。机制检验发现,政府审计可以通过提升企业ESG关注度、驱动企业绿色创新和改善公司治理水平来提升其ESG表现。同时,在污染行业企业、内部控制水平较差企业和成熟期企业中,政府审计对ESG表现的促进作用更加明显。

生命共同体视野下人与自然关系的伦理考量

西方伦理文化从古希腊开始就隐含着人与自然主客对立的思维模式,经过“现代性”的建构,确立了“控制自然”的西方伦理话语,预制出人类中心主义与自然中心主义之间无法统一的生态伦理困境。我国是“后发现代性”国家,缺少一些实际的治理现代化经验;但在解决生态危机这一问题上,拥有丰富的伦理文化传统资源,经过“现代性”的自主重构,创造性地提出了“生命共同体”理念,对人与自然之间的关系进行伦理考量,形成符合中国伦理文化特征的生态伦理观念、原则和实践方式。在“生命共同体”的中国伦理文化语境视野下,生态伦理不再是处于割裂状态的两难选择,而是融入社会生活中的有机整体,遵守生态道德规范,遵循生态正义,养成生态德性,达到尊重自然与完善人自身的内在统一,为文明的顺利转型和生态文明建设提供充分的理论支持和伦理考量。

Bone Marrow Transplant Long-Term Survivors’ Satisfaction with Quality of Life: Comparison with a Control Group

Purpose: To evaluate the global quality of life (QoL) of survivors with 10-year or more post-transplant, and to identify risk factors that interfere with well-being. Methods: This is a prospective analytic transversal study with 214 survivors of Bone Marrow Transplant (BMT) and 264 healthy people identified among blood donors, treated as the control group, of both sexes, 18 years or older. The protocol includes a demographic-socioeconomic questionnaire, World Health Organization Quality of Life (WHOQOL) and the Karnofsky Performance Status Scale. Results: 53.7% of the survivor group members are satisfied with their QoL. A similar result can be found in the control group (54.2%). Chronological maturity, anxiety, sexual difficulty, and being a provider are factors that interfere negatively in the QoL of male survivors. In female survivors, the risk factors are anxiety, low educational level, not having a stable partner, being a provider, and not being Caucasian. Conclusions: Survivors are as satisfied with their QoL as the control group. QoL is understood as a perceptive process composed of objective (functional and relational capacity) and subjective phenomenon (perceptive composition).

基于电池寿命控制策略的交流充电桩设计

针对充电电流对动力电池寿命和性能的影响,提出一种基于电池寿命控制策略的交流充电方式。考虑整个充电系统存在较强的非线性与延迟,采用模糊神经网络控制算法,以马斯最佳充电电流曲线为充电过程中充电电流的实时控制目标,对充电过程中整个充电电流进行实时监测并控制。此外,推导模糊神经网络算法的3个控制参数△k_(p)、△k_(i)、△k_(d),完成实时控制充电电流I_(c)的理论推导,并设计整个控制策略的软件程序框架,搭建整个充电桩的架构,可为家用新能源汽车的充电桩设计提供新的思路和参考。

自然保护地立法维护国家生态安全的法理与机制

《关于建立以国家公园为主体的自然保护地体系的指导意见》确立自然保护地在维护国家生态安全中居于首要地位,并要求加快推进自然保护地相关法律法规和制度建设作为保障措施,因此,维护国家生态安全应作为自然保护地立法的价值目标。自然保护地立法通过维护国家生态安全以贯彻总体国家安全观、落实“生态文明”宪法目标,这是国家生态安全作为自然保护地立法目的的法律逻辑。预期以维护国家生态安全为价值目标展开规范体系,前提是厘清“国家生态安全”的法理构造,总体国家安全观体系要求重视从主体、时间、空间3个维度阐释国家生态安全立法需求的层次结构。研究的基本结论为,国家生态安全目标诉求下自然保护地立法,应从主体、时间、空间这3个维度展开维护国家生态安全的法律制度设计:①国家生态安全主体维度下的自然保护地立法重点包括3个方面,在立法目的条款中彰显“生命共同体”的主体定位,在立法体例结构上以自然生态系统内在规律为逻辑主线,在立法逻辑上并重生态规律与行为控制二元标准并据此展开制度设计;②国家生态安全时间维度下的自然保护地法律机制选择包括构建自然保护地动态调整制度、创设自然保护地季节性差别管控制度;③国家生态安全空间维度下的自然保护地法律制度创新包括构建以自然生态空间为核心的分级管理制度、制定大尺度生态空间下的分区管控制度和创设自然保护地保护与管理跨行政区域协作制度。

以IKAP理论为指导的延续性护理对老年前列腺癌术后患者尿失禁及生活质量的影响

目的探讨基于信息知识信念行为(IKAP)理论的延续性护理对老年前列腺癌术后患者尿控功能和生活质量的影响。方法选取2022年5—10月行机器人辅助腹腔镜前列腺癌根治术的120例患者为研究对象。按照组间基本特征具有可比性的原则将患者分为对照组和观察组,每组60例,对照组患者实施常规延续性护理,观察组患者在此基础上实施以IKAP理论为指导的延续性护理,比较两组患者术前、术后1个月尿控功能恢复效果及汉密尔顿焦虑量表(HAMA)评分、生命质量核心量表(QLQ-C30)评分的变化。结果术后1个月,观察组患者尿控功能恢复有效率高于对照组,差异有统计学意义(P<0.05)。术前两组患者HAMA评分比较,差异无统计学意义(P>0.05);术后1个月,观察组患者HAMA评分低于对照组,差异有统计学意义(P<0.05)。术前,两组患者QLQ-C30评分比较差异无统计学意义(P>0.05);术后1个月,观察组患者QLQ-C30的总体健康状况、功能领域评分高于对照组,差异有统计学意义(P<0.05);观察组患者症状领域及单一条目评分低于对照组,差异有统计学意义(P<0.05)。结论基于IKAP理论的延续性护理可改善患者的尿控功能,促进患者心理健康,提高术后生活质量。

生活方式对心血管病高危人群血压控制的影响—基于5年面板数据

目的评价心血管病高危对象血压控制效果,分析生活方式对血压控制的影响。方法对高危人群进行随访和干预,得到连续5年记录完整的高危对象1151人。采用Stata15.0软件,使用面板Logit模型分析生活方式对血压控制的影响。结果干预后高危人群血压控制率从2016的23.8%提高到2020年的38.7%,收缩压和舒张压均值明显下降(P<0.05)。干预后吸烟、饮酒、超重或肥胖等生活方式变化不明显,体育锻炼情况明显改善,“每天锻炼”比例从2016年的22.8%上升到2020年的50.6%。面板Logit模型显示,饮酒(OR=1.523,95%CI:1.159~2.003)、超重或肥胖(OR=2.208,95%CI:1.696~2.874)是血压未控制的危险因素,运动是血压未控制的保护因素,每天运动让血压未控制的危险减低41.9%。结论干预对心血管病高危对象血压控制取得较好效果,饮酒、超重或肥胖等不良生活方式是未来要加强干预的重点。

消费意识形态:当代资产阶级日常生活的改变——列斐伏尔《当代世界的日常生活》研究

列斐伏尔意识到,今天的资本主义社会中出现了一些新情况,资本主义并没有像马克思、列宁所预测的那样走向灭亡,而是出现了“垂而不死”的情况。其中最重要的改变,是原先马克思预设在社会主义和共产主义中,通过自觉认识生产规律所进行的“计划化观念”现在被资本主义有效整合到了自身的生产方式之中。今天的资本主义可以被指认为消费被控制的官僚社会,资本主义社会日常生活中作为消费动机的欲望本身,是资本通过软性的广告制造出控制人们的无意识中的虚假需要,由此再生产出盲目跟风消费的“他者欲望”。这个所谓的“消费社会”中已经生成了一种新的意识形态,即现代资产阶级世界中特有的消费意识形态。

计及灵活经济环保运行的火电-飞轮储能系统容量配置与调频参数协同优化

提出了一种计及灵活经济环保运行的火储系统容量配置与调频参数协同优化方法。首先,设计了一种基于低通滤波自动分配火储功率和考虑储能荷电状态自恢复的火储联合一次调频协调控制策略;综合考虑系统调频性能、投入运行成本、污染物排放等,建立了火储容量配置与调频参数协同优化模型,并给出了基于粒子群算法的求解方法。最后,以某火储系统为例进行仿真验证。结果表明:协调控制策略和协同优化方法具有有效性。

日本鲭的保鲜技术研究进展

为解决日本鲭捕捞后极易出现的品质劣化问题,更好地满足消费者对高品质日本鲭产品的食用需求,国内外研究者采用微冻、冰温、冻藏、冷海(盐)水和流化冰等低温保鲜技术以及添加保鲜剂、涂膜、电解水、外加电场、低温等离子体和高压处理等辅助技术对日本鲭资源进行质量控制,并对其致腐因素进行了研究。结果显示,低温保鲜技术虽然在一定程度上可以达到控制鱼体品质劣化、延长产品货架期的目的,但单独使用这些技术的保鲜效果并不理想;将其与低温保鲜辅助技术联用后,不仅可以有效延长日本鲭产品的货架期,还可以在一定程度上维持产品的风味和感官特性。然而,日本鲭捕获后仍然会受到鱼体中内源酶、体外微生物和氧化作用等致腐因素的多重影响,进而导致腐败。研究表明,应充分了解日本鲭的致腐原因,以便针对性地采取保鲜措施来遏制腐败行为的发生。本文系统综述了日本鲭低温保鲜及其辅助技术的研究进展,并对鱼体的致腐因素进行了深入总结,以期为日本鲭资源有效的质量控制与高值化利用提供参考依据。