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31.
This paper studies what professional forecasters predict. We use spectral analysis and state space modeling to decompose economic time series into trend, business cycle, and irregular components. We examine which components are captured by professional forecasters by regressing their forecasts on the estimated components extracted from both the spectral analysis and the state space model. For both decomposition methods, we find that, in the short run, the Survey of Professional Forecasters can predict almost all of the variation in the time series due to the trend and the business cycle, but that the forecasts contain little or no significant information about the variation in the irregular component.  相似文献   
32.
针对传统的频谱分析和自相关函数反演周期时常出现虚假周期的问题,提出了多重交叉残差法处理空间旋转目标雷达散射截面(Radar Cross Section,RCS)的时间序列。以空间跟踪和监视系统(Space Tracking and Surveillance System,STSS)卫星为例,仿真了空间目标失稳旋转状态,对比了频谱分析、自相关函数和多重交叉残差3种方法的处理结果,发现当目标存在进动运动时多重交叉残差法抗干扰能力更强。在此基础上,进一步研究了不同章动角时多重交叉残差法对旋转周期的反演效果,结果表明章动角大小会影响旋转周期的反演准确度,且章动角达到一定数值后,卫星进动幅度过大导致RCS序列周期性模糊,无法用多重交叉残差法反演出旋转周期。  相似文献   
33.
Outdoor recreation provides a range of health and wellbeing benefits and facilitates engagement with natural environments. We explore older people's participation in outdoor recreation throughout their lives to examine how past experiences shape engagement later in life. A qualitative life history approach, consisting of semi-structured interviews and a focus group in three place-specific (urban, rural, and small town coastal) case studies in Scotland, was adopted. Thematic analysis revealed ways in which childhood experiences shaped adult engagement and highlighted life course transitions where behaviour change was most pronounced. Place and gender were considered as factors which may affect responses. Participants identified the points of getting married, becoming a parent, children entering adolescence, retirement, the onset of disabilities or ill health, and the death of others as “moments of change” in the extent and/or form of their outdoor recreation. The findings highlight potential for targeted interventions to promote outdoor recreation throughout life.  相似文献   
34.
Unequal distribution of fiscal resources and lower prioritization of budget towards healthcare are the most important challenges in achieving universal health coverage in India. This study has examined relationships between government health expenditure and fiscal space (i.e. tax revenue, non-tax revenue, fiscal transfer, and borrowings) in twenty-one states of India for the period of 1980–2014. Our panel regression results imply that mobilization of tax revenue has a positive impact, while borrowings have a negative impact on the allocation of government expenditure on healthcare in the long-run. The panel quantile regression results show that states associated with the low and middle level of revenue growth have been mobilizing finance through central government transfer and borrowings in short-run. Further, the panel vector error correction models show that sum of the lagged coefficients of borrowings have a greater impact on health financing process as compared to other sources of fiscal space at short-run, and the speed of adjustment towards long-run equilibrium is relatively slower. The overall analysis concludes that less domestic revenue mobilization and higher dependency of borrowings for healthcare financing may create fiscal stress on state finances in the long-run, and thereby it could possibly reduce the prioritization of spending. Therefore, improvement in revenue growth and proper utilization of fiscal transfer would be appropriate policy implications from this study.  相似文献   
35.
极点作为谐振区雷达目标的最主要电磁特性,具有很大的空间目标识别前景。但是在使用频域观测数据提取目标极点时,存在虚假极点和估计精度问题。针对上述问题,首先通过加窗和截断改进了后时响应信号的获取流程,抑制了虚假极点影响;然后采用最小描述长度法(MDL)估计极点个数,避免了定阶错误引起的虚假极点;最后采用联合矩阵束法估计极点,有效减少了单角度数据估计极点时存在的遗漏极点和虚假极点问题。FEKO软件验证表明,所提算法具有更高的精度和抗噪能力。  相似文献   
36.
Despite extensive literature on green hotel management and sustainability, scant attention has been given on the role of managers to solve environmental related issues. This study's aim is to assess the effects of managers' green knowledge and green transformational leadership on firms' environmental performance with the mediating effect of green creativity. The study analyzes the perceptions of 363 employees in different managerial positions of the hotel industry employing Partial Last Square Structural Equation Modeling. The findings of the study show a positive effect of green knowledge and green transformational leadership on green creativity and green transformational leadership on environmental performance. Furthermore, green creativity is also found to have significant mediating effect between green knowledge and environmental performance, and green transformational leadership and environmental performance relations. The main implication of the current research is that managers' green concerns might help the stakeholders in the hotel industry to respond through appropriate green initiatives for their organizations. Further suggestions for literature and practice are discussed.  相似文献   
37.
With increasing environmental competitions between companies, there is a pressing need to explore how the environmental pressures from rivals influence focal firms' actions and the subsequent performance consequences. On the basis of social contagion theory and upper echelons theory, we examine whether firms respond to competitors' green success through green supplier integration, which further improves firm performance, and the moderating effect of organizational ambidexterity. The research explores hypothesized relationships adopting hierarchical regression analysis and bootstrapping method by collecting survey data from 206 Chinese manufacturers. Our findings suggest that competitors' green success positively influences green supplier integration. Green supplier integration mediates the impacts of competitors' green success on financial and environmental performance. In addition, the combined dimension of organizational ambidexterity plays a positive moderating role in the impacts of green supplier integration on financial and environmental performance. This study expands previous literature and managers' practices on green supply chain management.  相似文献   
38.
Environmental issues are massively emerging in the current agendas of governments, businesses and consumers all over the globe. Consumers increasingly adopt a more energetic role in the environmental discussion and employ product consumption to manifest their contribution to the debate. Equally, a growing number of businesses try to affect positive social change, whereas others strategically approach green opportunities; at the same time, they persistently intensify their branding offerings to sustain loyalty. This article brings into discussion green consumption values as the authors aim to shed light into the way the latter moderate the effect of brand related factors, namely, brand experiences and brand personality, on brand loyalty. Based on data received from 413 participants and using the wearable technologies industry as the focal context, the study underscores the significance of green consumption values. Findings are discussed, and implications for managers are provided.  相似文献   
39.
This study aims to empirically evaluate the predictors that influence sustainability performance among manufacturing firms. Leadership and management, green and lean practices, and guanxi were examined to determine whether these predictors are directly and/or indirectly affecting sustainability performance; 160 valid responses were collected and partial-least-squares-structural-equation-modeling (PLS-SEM) was used to analyze the data. The results showed that leadership and management positively influenced green and lean practices and green and lean practices positively influenced sustainability performance. Leadership and management also positively influenced guanxi. Interestingly, leadership and management and guanxi do not exert a significant direct influence on sustainability performance. The findings contributed to the development of the resource-based-view theory further by empirically exploring the significance of leadership and management coupled with green and lean practices as competencies and capability to drive sustainability performance. The testing of the dual mediators' effects further added value to this study.  相似文献   
40.
Consumers are increasingly worried that their current consumption patterns have negative environmental impacts, which in turn shapes their green purchase intentions. Based on the signaling theory and stimulus–organism–response model, the purpose of this research is to construct a theoretical framework to understand consumer intentions to buy eco-labeled products. Empirical results from 671 questionnaires show that as expected, green advertising receptivity positively affects intention, and the relationship between green advertising receptivity and intention is also moderated by promotion focus and mediated by system trust and personal trust. However, the relationship between green advertising receptivity and purchase intention is not moderated by prevention focus. Hence, this research suggests that stakeholders should conduct truthful green advertising campaigns to dispel consumer suspicion and target different consumers with different green advertising and marketing campaigns to increase sales.  相似文献   
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