基于D-S证据理论的农作物气候品质预测方法研究:以晚熟杂交柑橘春见为例

【目的】基于多源气象数据构建果实品质(糖含量等级)预测模型,为科学评价果实气候品质及深入挖掘农产品气候资源提供科学依据。【方法】以晚熟柑橘春见果实为研究对象,利用多源数据融合技术、人工神经网络(BP神经网络、RBF神经网络和Elman神经网络)和D-S证据理论,包括气象数据质量控制、特征选取、特征级融合、决策级融合4个步骤,构建基于多源气象数据的果实品质(糖含量等级)预测模型。【结果】春见果实品质预测模型采用BP神经网络预测结果总体准确率为87.50%,平均绝对误差(MAE)为0.150,均方根误差(RMSE)为0.447;RBF神经网络预测结果总体准确率为85.00%,MAE为0.175,RMSE为0.474;Elman神经网络预测结果总体准确率为87.50%,MAE为0.150,RMSE为0.447;D-S证据理论决策融合总体预测准确率达95.20%,分别较BP神经网络、RBF神经网络和Elman神经网络提升7.7百分点、10.2百分点和7.7百分点,MAE和RMSE分别为0.040和0.214,均明显降低。【结论】D-S证据理论决策融合后的果实品质预测准确率相比单一神经网络预测更高、误差更小。

经验小波变换和改进S变换结合的电能质量检测与识别方法

为分析不确定干扰因素影响下的实际电力网络电能质量问题,提出一种经验小波变换(EWT)和改进S变换相结合的电能质量检测与识别方法。该方法一方面利用EWT联合归一化直接正交(NDQ)算法和奇异值分解(SVD)算法准确提取调幅-调频分量的频率、幅值和时间参数,另一方面考虑到EWT算法在高噪声环境下瞬时幅值波动的问题,引入改进S变换提取高噪声干扰下的电能质量扰动时频信息,最后,基于EWT和改进S变换提取的扰动特征向量,利用基于改进粒子群优化算法(IPSO)优化支持向量机(SVM)的电能质量扰动识别分类器实现扰动类型的精确识别。仿真和实验表明所提方法在复合扰动识别分类时平均识别准确率为93.23%,且能够准确识别4种实测扰动信号。

Factors influencing quality of life in Chinese patients with dementia: a systematic review

Background:Dementia is a group of nervous system diseases characterized by progressive cognitive decline,leading to a loss of self-care ability and a decline in well-being.This places a significant burden on the global healthcare system,with Chinese patients accounting for approximately one-quarter of the world’s dementia cases.Therefore,it is crucial to identify factors that impact the quality of life(QOL)among elderly Chinese individuals with dementia.Method:To achieve this,we conducted a comprehensive search of several databases,including PubMed,Embase,Web of Science,the Cochrane Library,China National Knowledge Infrastructure,Wanfang Data,China VIP Database and China Biomedical Literature Database.We reviewed cross-sectional studies from the inception of these databases until March 27,2022.QOL outcomes were assessed using standardized scales in the studies included in this review.Results:The search yielded a total of 1,235 relevant articles,from which we finally included 21 cross-sectional studies and one longitudinal study after rigorous quality assessment.Among these,10 studies were classified as high quality,while 12 were classified as fair quality.Through our analysis,we identified 28 patient-rated QOL factors and 14 caregiver-rated QOL factors.These factors were categorized into three groups:patient,disease-related and caregiver.Factors commonly found to influence patient-rated QOL included age,education,marital status,depression,self-care ability,dementia severity,cognitive function,behavioral and psychological symptoms of dementia and caregiver burden.Similarly,factors commonly influencing caregiver-rated QOL included economic status,depression,self-care ability,dementia severity,cognitive function,behavioral and psychological symptoms of dementia and caregiving time.Conclusion:This review clarifies the factors that influence the QOL of Chinese individuals with dementia.When implementing interventions,it is crucial to consider the differences between patient-rated QOL and caregiver-proxy-rated QOL,as well as their respective influencing factors.

Introduction of PIC/S Accession Procedure and Suggestions for Establishing a Unified Quality Management System in China

Objective To introduce the accession procedure and evaluation of PIC/S,and help relevant departments in China to understand the requirements of PIC/S in detail,and to promote the process of China’s entry into PIC/S.Methods The procedures and steps of joining PIC/S,the evaluation process of PIC/S,and the experience of several countries in joining PIC/S were introduced and analyzed,which could help the relevant personnel in China understand the specific contents.Results and Conclusion According to the requirements of PIC/S,it is necessary to establish a unified GMP quality management system.

Expectations and Level of Satisfaction of the Patient with Parkinson’s Disease Undergoing Deep Brain Stimulation Surgery at the National Institute of Neurology and Neurosurgery

Background: Deep brain stimulation (DBS) is an established treatment for patients with advanced Parkinson’s disease (PD). Reports show continued patient satisfaction after surgery despite not maintaining clinical improvement as measured by evolution scales. Objectives: The present study sought to explore expectations and level of satisfaction in patients after DBS surgery with a semi-structured questionnaire and subsequent correlation with functional scales, Quality of Life (QoL), and motor and non-motor symptoms. Methods: We performed descriptive statistics to represent demographic data, Wilcoxon rank tests to determine significant differences, and Spearman correlation between the applied scales. Results: We evaluated 20 patients with a history of DBS surgery. 45% were female, with a mean age of 55.7 ± 14.15 years, a mean disease duration of 13.42 ± 8.3 years, and a mean time after surgery of 3.18 ± 1.86 years. Patients reported surgery meeting expectations in 85.5% and continued satisfaction in 92%. These two variables showed a significant correlation. Conclusions: This sample of patients remained satisfied after DBS surgery, although we found no differences in motor and non-motor clinimetric scales. Further studies are needed to confirm the importance of assessing quality of life in patients with DBS.

Life′s Simple 7干预减轻Her⁃2阳性乳腺癌患者化疗相关心血管系统损害的研究

目的探讨Life′s Simple 7(LS7)干预减轻Her⁃2阳性乳腺癌患者根治术后化疗相关心血管系统损害的作用。方法将120例Her⁃2阳性并接受标准化乳腺癌化疗的患者随机等量分为对照组及LS7组,对照组为标准化疗方案,LS7组为对照组基础上给予LS7干预12个月,后续通过比较两组治疗前后心血管系统损伤程度、焦虑、抑郁及生活质量等指标评价其对心血管系统损害的改善作用。结果相较于对照组,LS7组LS7总评分及7项心血管健康指标均优于对照组(P<0.05),LS7组LVEF较高(P<0.05)、NT⁃proBNP较低(P<0.05),焦虑和抑郁评分较低(P<0.05)、生活质量评分较高(P<0.05)。结论LS7干预可显著减轻Her⁃2阳性乳腺癌化疗相关心血管系统损害并改善乳腺癌患者的心理状况和生活质量,值得在临床推广。

基于神经网络与改进D-S证据理论的水质评价模型研究

针对水质监测数据多源、非线性、不确定性大的特点,提出了一种基于神经网络与改进D S证据理论相结合的水质评价模型。该模型首先利用3种前馈神经网络对水质监测数据进行初步评价,将初步评价结果归一化后作为基本概率分配,然后引入证据权重修正冲突证据,根据D-S合成规则得到融合评价结果,最后利用迭代思想修正评价结果。其中,基于证据权重修正冲突证据并进行融合结果的迭代修正,能有效解决传统D-S证据理论无法处理高冲突证据的缺陷。冀南地区5个监测断面水质评价结果表明,该水质评价模型能够提高水质评价准确性。

高温扩散法制备B-S共掺杂单晶金刚石

利用高纯度的硼粉和硫粉,在1300℃的高温真空环境下,通过扩散装置制备出硼(B)、硫(S)共掺杂单晶金刚石。扫描电子显微镜、X射线能谱、拉曼光谱等测试结果表明,随着两种元素的掺入,金刚石的形貌和晶体质量发生变化。掺杂后的金刚石形貌复杂,蚀坑和沟壑内部形貌呈阶梯状,随着掺杂量的增加出现断层,并在蚀坑处检测出较高的硼原子和硫原子含量,掺杂B-S质量比为0.5的金刚石蚀坑处的硼原子和硫原子含量最高。随着杂质原子的渗入,拉曼半峰全宽值增大,金刚石的晶体质量下降。室温下进行霍尔检测结果表明,掺杂后的金刚石电阻率降低。B-S质量比为1和2的样品导电类型表现为p型;B-S质量比为0.5时,样品的霍尔系数为负值,导电类型为n型。

Influence of nitrogen and sulfur fertilization on quality of canola(Brassica napus L.) under rainfed conditions

Field experiments were conducted at Cereal Crops Research Institute, Pirsabak, Nowshera, Pakistan, during winter 2003~2004 and 2004~2005 to evaluate the effect of nitrogen and sulfur levels and methods of nitrogen application on canola (Brassica napus L. cv. Bulbul-98) under rainfed conditions. Four levels of S (0, 10, 20, and 30 kg/ha) and three levels of N (40, 60, and 80 kg/ha) and a control treatment with both nutrients at zero level were included in the experiments. Sulfur levels were applied at sowing while N levels were applied by three methods (100% soil application, 90% soil+10% foliar application, and 80% soil +20% foliar application). The experiments were laid out in randomized complete block (RCB) design having four replications. Oil content increased significantly up to 20 kg S/ha but further increase in S level did not enhance oil content. Glucosinolate content increased from 13.6 to 24.6 μmol/g as S rate was increased from 0 to 30 kg/ha. Protein content increased from 22.4% to 23.2% as S rate was increased from 0 to 20 kg/ha. Oil content responded negatively to the increasing N levels. The highest N level resulted in the highest values for protein (23.5%) and glucosinolate (19.9 μmol/g) contents. Methods of N application had no significant impact on any parameters under study.

Assessment and mapping of environmental quality in agricultural soils of Zhejiang Province, China

Heavy metal concentrations in agricultural soils of Zhejiang Province were monitored to indicate the status of heavy metal contamination and assess environmental quality of agricultural soils. A total of 908 soil samples were collected from 38 counties in Zbejiang Province and eight heavy metal （Cd, Cr, Pb, Hg, Cu, Zn, Ni and As） concentrations had been evaluated in agricultural soil. It was found 775 samples were unpolluted and 133 samples were slightly polluted and more respectively, that is approximately 14.65% agricultural soil samples had the heavy metal concentration above the threshold level in this province by means of Nemerow＇s synthetical pollution index method according to the second grade of Standards for Soil Environmental Quality of China （GB15618- 1995）. Contamination of Cd was the highest, followed by Ni, As and Zn were lower correspondingly. Moreover, Inverse Distance Weighted （IDW） interpolation method was used to make an assessment map of soil environmental quality based on the Nemerow＇s pollution index and the soil environmental quality was categorized into five grades. Moreover, ten indices were calculated as input parameters for principal component analysis （PCA） and the principal components （PCs） were created to compare environmental quality of different soils and regions. The results revealed that environmental quality of tea soils was better than that of paddy soils, vegetable soils and fruit soils. This study indicated that GIS combined with multivariate statistical approaches proved to be effective and powerful tool in the mapping of soil contamination distribution and the assessment of soil environmental quality on provincial scale, which is beneficial to environmental protection and management decision-making by local government.

Interventions and targets aimed at improving quality in inflammatory bowel disease ambulatory care

Over the past decade,there has been increasing focus on improving the quality of healthcare delivered to patients with chronic diseases,including inflammatory bowel disease.Inflammatory bowel disease is a complex,chronic condition with associated morbidity,health care costs,and reductions in quality of life.The condition is managed primarily in the outpatient setting.The delivery of high quality of care is suboptimal in several ambulatory inflammatory bowel disease domains including objective assessments of disease activity,the use of steroid-sparing agents,screening prior to anti-tumor necrosis factor therapy,and monitoring thiopurine therapy.This review outlines these gaps in performance and provides potential initiatives aimed at improvement including reimbursement programs,quality improvement frameworks,collaborative efforts in quality improvement,and the use of healthcare information technology.

Faecal incontinence and health related quality of life in inflammatory bowel disease patients: Findings from a tertiary care center in South Asia

AIM: To analyze the frequency and severity of faecal incontinence(FI) and its effect on the quality of life(QOL) in inflammatory bowel disease(IBD) patients. METHODS: All patients who attended surgical and medical gastroenterology outpatient clinics in a tertiary care center with an established diagnosis of either ulcerative colitis(UC) or Crohn's disease(CD) over a period of 10 mo were included in this study. Before enrollment into the study, the patients were explained about the study and informed consent was obtained. The patients with unidentified colitis were excluded. The data on demographics, disease characteristics, FI(Vaizey score), and quality of life(IBD-Q) were collected. Data were analyzed using SPSS version 21.RESULTS: There were 184 patients(women = 101, 54.9%; UC = 153, 83.2%) with a female preponderance for UC(male/female ratio = 1:1.5) and a male preponderance for CD(male/female = 2:1). Forty-eight(26%) patients reported symptoms of FI. Among the patients with FI, 70.8% were women(n = 34) and 29.2% were men(n = 14) with an average age of 52.7 years(range, 20-78 years). Average age of onset of FI was 48.6(range, 22-74) years. Ten percent(n = 5) reported regular FI. Incontinence to flatus was seen in 33.3%(n = 16), to liquid faeces in 56.2%(n = 27), to solid faeces in 6.2%(n = 3) and to all three in 4.1%(n = 2). Twenty-one percent(n = 10) complained of disruption of their physical and social activity. There was no association between FI and type of IBD. Significant associations were found between FI and age(P = 0.005) and gender(P < 0.001). QOL in our cohort of patients was significantly affected by FI.CONCLUSION: In our study, nearly a quarter of patients reported FI. There was a significant correlation between FI and QOL. Therefore, enquiring about FI in IBD patients can lead to identification of this debilitating condition. This will enable early referral for continence care in this group of patients.

Quality improvement in pediatric inflammatory bowel disease: Moving forward to improve outcomes

In recent years,pediatric health care has embraced the concept of quality improvement to improve patient outcomes.As quality improvement efforts are implemented,network collaboration(where multiple centers and practices implement standardized programs)is a popular option.In a collaborative network,improvement in the conduct of structural,process and outcome quality measures can lead to improvements in overall health,and benchmarks can be used to assess and compare progress.In this review article,we provided an overview of the quality improvement movement and the role of quality indicators in this movement.We reviewed current quality improvement efforts in pediatric inflammatory bowel disease (IBD),as well as other pediatric chronic illnesses.We discussed the need to standardize the development of quality indicators used in quality improvement networks to assess medical care,and the validation techniques which can be used to ensure that process indicators result in improved outcomes of clinical significance.We aimed to assess current quality improvement efforts in pediatric IBD and other diseases,such as childhood asthma,childhood arthritis,and neonatal health.By doing so,we hope to learn from their successes and failures and to move the field forward for future improvements in the care provided to children with IBD.

Advancing the quality of care and nursing practice through emancipatory reflection

Reflection is a fundamental skill of health-care professionals and plays an important role in ensuring the quality of care in health-care practice. It is believed that undertaking reflection in practice can help nurses develop an awareness of a sense of personal power and agency, cultivate their critical thinking ability and help them promote their professional development. However, reflection has not been introduced widely as a nursing curriculum in China, and literature shows that some clinical nurses lack critical thinking skills and critical reflective practice skills by reason of not receiving systematic education on reflection when they were at nursing college.Therefore, we present a series of seven articles focused on prevalent and interesting practice-based events to reflect on in this special issue. The main aim is to disseminate reflective methodology and techniques and present examples of reflective writing for nurses.It is expected that these articles will help to lead Chinese nurses to adopt critical emancipatory reflective processes to bring about transformative actions.

Quality of life, work productivity impairment and healthcare resources in inflammatory bowel diseases in Brazil

BACKGROUND Inflammatory bowel diseases(IBD)have been associated with a low quality of life(QoL)and a negative impact on work productivity compared to the general population.Information about disease control,patient-reported outcomes(PROs),treatment patterns and use of healthcare resources is relevant to optimizing IBD management.AIM To describe QoL and work productivity and activity impairment(WPAI),treatment patterns and use of healthcare resources among IBD patients in Brazil.METHODS A multicenter cross-sectional study included adult outpatients who were previously diagnosed with moderate to severe Crohn’s disease(CD)or ulcerative colitis(UC).At enrolment,active CD and UC were defined as having a Harvey Bradshaw Index≥8 or a CD Activity Index≥220 or calprotectin>200μg/g or previous colonoscopy results suggestive of inadequate control(per investigator criteria)and a 9-point partial Mayo score≥5,respectively.The PRO assessment included the QoL questionnaires SF-36 and EQ-5D-5L,the Inflammatory Bowel Disease Questionnaire(IBDQ),and the WPAI questionnaire.Information about healthcare resources and treatment during the previous 3 years was collected from medical records.Chi-square,Fisher’s exact and Student’s t-/Mann-Whitney U tests were used to compare PROs,treatment patterns and the use of healthcare resources by disease activity(α=0.05).RESULTS Of the 407 patients in this study(CD/UC:64.9%/35.1%,mean age 42.9/45.9 years,54.2%/56.6%female,38.3%/37.1%employed),44.7%/25.2%presented moderate-to-severe CD/UC activity,respectively,at baseline.Expressed in median values for CD/UC,respectively,the SF-36 physical component was 46.6/44.7 and the mental component was 45.2/44.2,the EQ-visual analog scale score was 80.0/70.0,and the IBDQ overall score was 164.0/165.0.Moderate to severe activity,female gender,being unemployed,a lower educational level and lower income were associated with lower QoL(P<0.05).Median work productivity impairment was 20%and 5%for CD and UC patients,respectively,and activity impairment was 30%,the latter being higher among patients with moderate to severe disease activity compared to patients with mild or no disease activity(75.0%vs 10.0%,P<0.001).For CD/UC patients,respectively,25.4%/2.8%had at least one surgery,38.3%/19.6%were hospitalized,and 70.7%/77.6%changed IBD treatment at least once during the last 3 years.The most common treatments at baseline were biologics(75.3%)and immunosuppressants(70.9%)for CD patients and 5-ASA compounds(77.5%)for UC patients.CONCLUSION Moderate to severe IBD activity,especially among CD patients,is associated with a substantial impact on QoL,work productivity impairment and an increased number of IBD surgeries and hospitalizations in Brazil.

Quality Assessment of Frozen Solenocera crassicornis Treated with Sodium Metabisulphite by Soaking or Spraying

The present work was carried out to evaluate the safety of shrimp(Solenocera crassicornis)treated with different concentrations of sodium metabisulfite(SMB)by soaking or spraying during frozen storage.Shrimps soaked in higher concentrations of SMB showed higher sensory scores,lower total color differences,and better anti-melanosis effects than shrimps in the control and other treatment groups throughout frozen storage(−18℃).Lower total volatile basic nitrogen and thiobarbituric acid reactive substances and higher salt soluble protein contents were detected in shrimp soaked with high doses of SMB compared with other samples.In addition,lower counts of total aerobic plates and psychrotrophic bacteria were observed in shrimp treated by soaking with higher doses of SMB than those in control shrimp and shrimp treated with other methods during frozen storage(−18℃).However,the SO2 content of 5%SMB-soaked samples exceeded the maximum allowable limit of 100mgkg−1.Overall,the use of 1.5%SMB soaking to treat shrimp results in good antioxidant and antimicrobial effects and,thus,may be suggested to preserve S.crassicornis under frozen conditions.The results of this study present important guidance on the use of SMB to maintain the quality of marine-trawling shrimp from manufacturing to consumption.

Quality of care delivered to hospitalized inflammatory bowel disease patients

Hospitalized patients with inflammatory bowel disease(IBD)are at high risk for morbidity,mortality,and health care utilization costs.While the literature on trends in hospitalization rates for this disease is conflicting,there does appear to be significant variation in the delivery of care to this complex group,which may be a marker of suboptimal quality of care.There is a need for improvement in identifying patients at risk for hospitalization in an effort to reduce admissions.Moreover,appropriate screening for a number of hospital acquired complications such as venous thromboembolism and Clostridium difficile infection is suboptimal.This review discusses areas of inpatient care for IBD patients that are in need of improvement and outlines a number of potential quality improvement initiatives such as payfor-performance models,quality improvement frameworks,and healthcare information technology.

Association between Caregiver Quality of Life and the Care Provided to Persons with Alzheimer’s Disease: Systematic Review

We reviewed the literature to examine whether an association exists between the quality of life (QoL) of primary informal Alzheimer's disease (AD) caregivers and the level and quality of care that these caregivers provide to their loved ones with AD. We obtained studies focusing on the care that these caregivers provide for their family members with AD. Our outcome of interest was level or quality of care and the independent variable was caregiver QoL. We extracted data in tabular form and used a narrative synthesis approach to describe our findings. Only one relevant study was included in the review. Overall, the evidence was equivocal regarding the associations between caregiver QoL and the level/quality of care in AD.

The Fuzzy Synthesizing Evaluation of City's Environmental Quality Based on GIOWA Operator:A Case of 13 Cities of Jiangsu Province

In this paper, the generally induced ordered weighted averaging (GIOWA) operator is used to construct the fuzzy evaluating system of the quality of a city’s environment including air, water and noise. Based on the part data of air, water and noise of the 13 cities under the jurisdiction of Jiangsu provincial government in 2002, a case study is given. The evaluating results show that the evaluating system of the quality of a city’s environment based on the GIOWA operator can reflect the condition of pollution controlled and environmental quality of a city in a period of time.

Addressing quality of life in the patient with interstitial cystitis/bladder pain syndrome

Interstitial cystitis/bladder pain syndrome(IC/BPS)is a debilitating,chronic condition characterized by chronic pelvic pain,urinary urgency,and frequency and is well-known to be associated with a decrease in work productivity,emotional changes,sleep,sexual dysfunction,and mobility.Many metrics of quality of life(QoL)in this patient population have been developed;however,a unified,standardized approach to QoL in these patients has not been determined.The effects of IC/BPS and co-morbid conditions on QoL are described using current validated metrics.Next,data regarding successful treatment of IC/BPS in terms of QoL improvement are reviewed.While QoL is the single most important clinical measure of success in the treatment of patients suffering from IC/BPS,addressing QoL in this patient population remains a significant challenge,as its effects on QoL are highly variable and unable to be differentiated from the effects of comorbid conditions on QoL,including depression,poor sleep,and inability to work.Future studies will need to address treatment efficacy on the basis of IC/BPS specific QoL metrics,and multi-modal assessment and therapy to address comorbid disease will also play an important role in the future to ensure comprehensive management of these patients.