Children and Workers Well-Being in Belgian French-Speaking Primary Schools during the COVID-19 Pandemic

Purpose: During the COVID-19 pandemic, a significant number of measures were taken worldwide to limit the transmission of SARS-CoV-2, and in many ways, changed human life. All these measures had harmful consequences and impacted the well-being of many people. Children were one of the most vulnerable groups. We conducted the present study to assess children’s and staff’s well-being in French-speaking primary schools in Belgium during the COVID-19 pandemic. Methods: A 37-question questionnaire for each child based on the Revised Children’s Manifest Anxiety Scale (RCMAS), and a 14-question questionnaire for each staff based on the Hospital Anxiety and Depression (HAD) scale was undertaken in order to assess the well-being. Multiple logistic regressions were performed to assess the relationship between RCMAS or HAD and other explanatory variables. Staff reported their perception of their current life and their future life in 5 years on a Visual Analogue Scale (VAS). Results: A total of 231 children and 221 staff in 11 primary schools answered the well-being questionnaire between January and May 2021. 53% (122/231) of children had symptoms of anxiety. Girls reported more anxiety symptoms than boys (≥10: 59%;Adj OR = 2.25;95% CI [1.28;4.03]). 52% (120/231) of children had a definite state of social desirability. According to age, the youngest (6 - 7 years) children were more likely to have social desirability (≥5: 71%;Adj OR = 3.44;95% CI [1.53;8.09]) compared to the oldest (10 - 12 years). Children who did not practice outdoor/street activities were more likely to have social desirability (≥5: 60%;Adj OR = 2.59;95% CI [1.38;4.99]). In schools with a higher local incidence of SARS-CoV-2, children were more likely to have social desirability (≥5: 64%;Adj OR = 2.15;95% CI [1.13;4.17]). In schools with a lower socioeconomic status, children were more likely to have social desirability (≥5: 72%;Adj OR = 2.74;95% CI [1.23;6.37]). Higher RCMAS anxiety (r = −0.18;p −0.23;p −0.20;p Conclusion: Our results showed that the well-being of children was impacted during the COVID-19 pandemic. Special attention must be focused on the most vulnerable groups, as the consequences can be catastrophic in the long term.

A Study of Hie and LBP: The First Step to Improve Subjective Well-Being

Backgrounds: Health does not only physical health, therefore, we need to study it from various viewpoints. Many Japanese female complain of a Hie or a low back pain (LBP), which they reduce their subjective well-being. We analyze. Those patients often have acupuncture therapy. In this study, we analyze the characteristics of Hie and LBP, the satisfaction level of alternative therapy and we pursue a tip to improve subjective well-being. Methods: Of 1000 women, Hie (+)/Hie (−) or LBP (+)/LBP (−), we compared their body temperature (BT) (axilla) and body mass index (BMI). Furthermore, the Chi test identified ten factors of “body” and seven “mind” information. Results: In the result of BT (axilla) while LBP indicated a significant difference. Both Hie and LBP showed difference in the opposite direction. Hie did now show such clear differences in “body” information. However, interestingly, all seven questions in the “mind” information showed statistical difference. Discussion and conclusion: One reason why those patients have acupuncture therapy may acupuncture therapy traditionally has not separate “mind” and “body” and it has the concept of “mind-body unity”. To improve subjective well-being, first we need to focus on “Mind” as well as “mind-body unity”. Mental-health support is important for patients with Hie or LBP to reduce physiological stress.

The Well-Posed Operators with Their Spectra in Lpw-Spaces

In this paper, we have considered the general ordinary quasi-differential operators generated by a general quasi-differential expression τp,q in Lpw-spaces of order n with complex coefficients and its formal adjoint τ+q',p' in Lpw-spaces for arbitrary p,q∈[1,∞). We have proved in the case of one singular end-point that all well-posed extensions of the minimal operator T0 (τp,q) generated by such expression τp,q and their formal adjoint on the interval [a,b) with maximal deficiency indices have resolvents which are Hilbert-Schmidt integral operators and consequently have a wholly discrete spectrum. This implies that all the regularly solvable operators have all the standard essential spectra to be empty. Also, a number of results concerning the location of the point spectra and regularity fields of the operators generated by such expressions can be obtained. Some of these results are extensions or generalizations of those in the symmetric case, while others are new.

基于Well-Being理论的风储混合电力系统充裕度评估

基于Well-being理论对风储混合电力系统进行了充裕度评估。所采用的Well-being充裕度指标中考虑了N-1确定性准则,不仅能计及发电系统的充裕性,还能计及输电系统的充裕性,因此更加合理且适用于发输电系统的充裕度评估。以简单的RBTS(Roy Billinton test system)以及规模稍大的IEEE-RTS79为算例,仿真分析了风电及电池储能系统(battery energy storage system,BESS)并网对电力系统充裕度的影响。结果表明,与风电场的集中布置相比,分散布置更有利于系统的充裕性;BESS对含风电场的电力系统充裕度提升作用明显,在电力系统瞬时备用控制中具有重要的作用。

电池储能运行策略对系统Well-being指标及风电消纳能力的影响

提出了一种电池储能系统有序放电运行策略,考虑风电出力不确定性、尾流效应、电池故障率等因素,对风储联合发电系统进行Well-being分析。算例表明,在风电超出允许接入比例,而系统吸收允许接入的风电后仍处于缺电状态时,该策略能提高系统的风电消纳能力,并进一步提高系统可靠性。此外,还进一步研究了该储能运行策略下,储能系统容量、电池最大充放电功率以及风电允许接入比例等因素对发电系统Well-being指标的影响。

Well-Pex药物与传统根充糊剂乳牙根管术疗效的比较研究

目的对比传统根充糊剂与Well-Pex药物对乳牙根管的治疗效果。方法将本院采取乳牙根管治疗的126例患儿随机均分为对照组与观察组,对照组采取传统根充糊剂氢氧化钙进行牙根管填充治疗,观察组采取Well-Pex药物进行牙根管填充治疗。应用SPSS 18.0统计软件对治疗后的临床疗效及远期疗效进行秩和检验分析。结果观察组总有效率为96.83%,对照组为79.37%,观察组的临床疗效优于对照组,两组比较差异有统计学意义(u=5.310,P<0.05);1年后进行复查,观察组总有效率为96.83%,对照组为77.78%,观察组远期疗效优于对照组,两组比较差异有统计学意义(u=5.069,P<0.05)。结论以Well-Pex药物进行根管填充治疗乳牙牙根疾病可更好地保存牙乳头的活性,有助于牙根生长,明显提升疗效。

三维不可压Maxwell-Navier-Stokes方程组局部强解的适定性

利用先验估计与Friedrichs方法,得到了三维不可压Maxwell-Navier-Stokes方程组解的局部适定性.此结果是已有结果中解的存在空间正则性的部分改进.

适用于发电系统Well-being评估的改进交叉熵方法

交叉熵法CEM(cross entropy method)用于电力系统Well-being评估时可能出现临界指标收敛速度低于风险指标收敛速度且差距较大,导致出现系统状态抽样效率低下的问题。针对此问题,提出了一种兼顾风险指标和临界指标收敛性的多目标交叉熵方法 MCEM(multi-objective cross entropy method)。该方法通过分别计算针对风险指标和临界指标的随机变量最优分布参数,引入权重系数获取兼顾多指标收敛特性的随机变量综合分布参数,再基于综合分布参数抽取系统状态。同时针对含多状态随机变量的电力系统Well-being评估问题,提出了扩展多目标交叉熵法EMCEM(extended multi-objective cross entropy method)。最后,以IEEE RTS79系统为例进行算例分析,算例结果验证了所提出的MCEM和EMCEM的有效性。

基于well-being分析的电网设备重要度评估与排序方法

设备重要度评估是电网风险评估与管控的重要内容,现有的方法无法考虑天气条件等不确定因素的影响,同时存在评价角度单一、实用性不强的问题。为此,提出一种电网设备重要度评估与排序的新方法。在well-being风险分析的框架下结合风险追踪模型和三状态天气模型,研究了单个设备对系统运行风险贡献程度的量化方法。在推导系统well-being风险指标分配模型的基础上,定义了设备紧急重要度指标(emergency importance indicator,EII)和警戒重要度指标(alert importance indicator,AII),分别从不同角度表征设备的重要程度。通过状态枚举法选取具有代表性的预想故障集,逐次将预想故障的运行风险分配给各个设备,最终完成考虑天气状态下的设备重要度评估与排序。RBTS系统和IEEE-RTS系统的仿真结果验证了所提方法的科学性和可靠性。

基于Well-being理论的风储混合电站可靠性分析

为确保发电系统可靠运行,将电池储能装置接入风电场,构建风储混合电站。基于Wellbeing理论,采用序贯蒙特卡洛模拟分析可靠性,得到系统的健康概率、边界概率与风险概率。分析中严格限制电池不完整充放电循环,并且设置2种电池运行策略,控制电池充放电行为。基于IEEE Roy Billinton测试系统(RBTS)的仿真结果表明:电池储能设备的接入可以显著提高含风电场发电系统的可靠性;优化的电池运行策略降低了系统的风险概率,并且显著提高了系统运行舒适度;风电场配置合适容量的电池可在确保可靠性的基础上提高经济性;采用基于Well-being理论的可靠性指标,对含储能装置发电系统的可靠性分析具有一定的优势。

基于序贯蒙特卡罗和well-being模型的风/柴/储能发电系统可靠性分析

介绍了序贯蒙特卡罗模拟法和well-being模型两种可靠性评估方法。通过研究储能容量和峰值负荷对系统的可靠性的影响,对两种可靠性评估方法进行比较分析。研究结果表明,采用well-being模型对系统进行可靠性评估较蒙特卡罗模拟法对系统的各个运行状态更加全面。

Potential risks of spectrum whitening deconvolution——compared with well-driven deconvolution

Deconvolution is widely used to increase the resolution of seismic data. To compare the resolution ability of conventional spectrum whitening deconvolution to thin layers with that of welldriven deconvolution, a complex sedimentary geological model was designed, and then the simulated seismic data were processed respectively by each of the two methods. The amplitude spectrum of seismic data was almost white after spectrum whitening, but the wavelet resolution was low. The amplitude spectrum after well-driven deconvolution deviated from white spectrum, but the wavelet resolution was high. Further analysis showed that if an actual reflectivity series could not well satisfy the hypothesis of white spectrum, spectrum whitening deconvolution had a potential risk of wavelet distortion, which might lead to a pitfall in high resolution seismic data interpretation. On the other hand, the wavelet after well- driven deconvolution had higher resolution both in the time and frequency domains. It is favorable for high resolution seismic interpretation and reservoir prediction.

Study of sedimentary sequence cycles by well-seismic calibration

In order to solve the problems of the fine division of sedimentary sequence cycles and their change in two-dimensional space as well as lateral extension contrast, we developed a method of wavelet depth-frequency analysis. The single signal and composite signal of different Milankovitch cycles are obtained by numerical simulation. The simulated composite signal can be separated into single signals of a single frequency cycle. We also develop a well-seismic calibration insertion technology which helps to realize the calibration from the spectrum characteristics of a single well to the seismic profile. And then we determine the change and distribution characteristics of spectrum cycles in the two-dimensional space. It points out the direction in determining the variations of the regional sedimentary sequence cycles, underground strata structure and the contact relationship.

Efficacy of the structured life review and the short-term life review on the spiritual well-beingof terminally ill cancer patients

GOALS: The aims of this study were to evaluate the treatment efficacy of the structured life review interviews and the Short-Term Life Review on the spiritual well-being of terminally ill cancer patients, in order to improve patients’ quality of life. SUBJECTS and METHODS: Participants were patients in palliative care units in Japan. In the study 1, the structured life review interviews were conducted with 12 patients. They completed the QOL scale of the SELT-M (Skalen zur Erfassung von Lebens qualitat bei Tumor- kranken–Modified Version) questionnaire before and after the interviews. In the study 2, the Short-Term Life Review was conducted with 30 patients. They reviewed their lives in the first session and they confirmed the contents in the album based on the life review in the second session. Duration of the treatment was one week. Measurement instruments included Func- tional Assessment Chronic Illness Therapy- Spiritual (FACIT-Sp). RESULTS: After the structured life review, the mean overall QOL score and Spirituality subscale score of the SELT-M significantly increased, from 2.57 ± 0.61 to 3.58 ± 1.0 (p=0.013) and 2.57 ± 0.61 to 3.14 ± 2.25 (P=0.023), respectively. After the Short-Term Life Review, the mean FACIT-Sp scores significantly increased from 16 ± 8.2 to 24 ± 7.1. CONCLUSION: Both the structured life review and the Short-Term Life Review may be effective in improving the spiritual well-being of terminally ill cancer patients, being higher feasibility for the Short-Term Life Review. We need to use these therapies understanding characteristics of each therapy.

A Novel Method of Fabricating a Well-Faceted Large-Crystal Diamond Through MPCVD

A novel method was developed to deposit a large crystal diamond with good facets up to 1000 μm on a tungsten substrate using a microwave plasma enhanced chemical vapor deposition （MPCVD）. This method consists of two steps, namely single-crystal nucleation and growth. Prior to the fabrication of the well-faceted, large crystal diamond, an investigation was made into the nucleation and growth of the diamond which were affected by the O2 concentration and substrate temperature. Deposited diamond crystals were characterized by scanning electron microscopy and micro-Raman spectroscopy. The results showed that the conditions of single-crystal nucleation were appropriate when the ratio of H2/CH4/O2 was about 200/7.0/2.0, while the sub- strate temperature Ts of 1000℃ to 1050℃ was the appropriate range for single-crystal diamond growth. Under the optimum parameters, a well-faeeted large crystal diamond was obtained.

GLOBAL WELL-POSEDNESS OF THE STOCHASTIC 2D BOUSSINESQ EQUATIONS WITH PARTIAL VISCOSITY

This paper deals with the stochastic 2D Boussinesq equations with partial viscosity. This is a coupled system of Navier-Stokes/Euler equations and the transport equation for temperature under additive noise. Global well-posedness result of this system under partial viscosity is proved by using classical energy estimates method.

THE WELL-POSEDNESS AND ASYMPTOTICS OF MULTI-DIMENSIONAL QUANTUM HYDRODYNAMICS

The multi-dimensional quantum hydrodynamic equations for charge transport in ultra-small electronic devices like semiconductors, where quantum effects （like particle tunnelling through potential barriers and built-up in quantum wells） take place, is considered in the present paper, and the recent progress on well-posedness, stability analysis, and small scaling limits are reviewed.

The Impacts of Physical Exercise on Stress Coping and Well-Being in University Students in the Context of Leisure

This study aims at investigating the in-depth information regarding impacts of physical exercise on psychological well-being in university students with an emphasis on coping with stress in the context of leisure. A qualitative research, based on interview to draw findings in an inductive way, was conducted. Nine university students (N = 9) in a large mid-west university took part in a face- to face, semi-structured interviews using ten open-ended questions with respect to benefits of leisure time physical exercise. The interview on the basis of phenomenological research examined what the participants experienced with leisure time physical exercise in conjunction with stress coping and mental health. Meaningful units of themes were induced with 24 initially drawn themes. These themes were reduced to 8 comprehensive constituent themes: self-efficacy, positive emotion, mind and body, health-behaviors, self-esteem, leisure, problem-focused coping, and positive expectancy. These reduced themes were finally boiled down to 6 integrated themes: positive emotion, unity of mind and body, heightened self-esteem, leisure, problem-focused coping, and self-regulation of health behavior. This research may shed a light in illuminating potential mechanism of how regular physical exercise is conducive to enhanced health behavior as well as effective stress coping in university students in the context of leisure. In particular, this research appears to be meaningful in suggesting that regular leisure-time physical exercise can lead to an effective problem-focused coping through elicitation of positive emotion.

GLOBAL WELL-POSEDNESS OF THE 2D INCOMPRESSIBLE MICROPOLAR FLUID FLOWS WITH PARTIAL VISCOSITY AND ANGULAR VISCOSITY

This paper is concerned with the two-dimensional equations of incompress- ible micropolar fluid flows with mixed partial viscosity and angular viscosity. The global existence and uniqueness of smooth solution to the Cauchy problem is established.

The Narrative strategies in A Clean,Well-Lighted Place

Ernest Hemingway was a well-known writer in modern literary world.He brought a hard-bitten realism into American fiction.His distinctively crisp,unadorned style left American literature permanently changed.His short novel A Clean,Well-Lighted Place was considered as one of his representative short novels.This paper will make an analysis to this short novel from aspects of focalization and narrative discourse.