Search results

Through content analysis, the study traces the relative prominence of “biomedical” and “public health” approaches in congressional bills aimed at improving the health of racial and ethnic minorities over a 28-year period. It documents a surge of interest in minority health during the late 1980s and early 1990s and highlights the dominance of biomedical initiatives during this period. Drawing on historical methods and interviews with key informants, the paper explains these patterns by detailing the ways in which policy legacies shaped the interests, opportunities, and ideas of interest groups and policy-makers.

Malnutrition is widespread and affects about one-third of humanity. Increasing production and consumption of vegetables is an obvious pathway to improve dietary diversity, nutrition and health. This chapter analyses how climate change is affecting vegetable production, with a special focus on the spread of insect pests and diseases. A thorough literature review was undertaken to assess current global vegetable production, the factors that affect the spread of diseases and insect pests, the implications caused by climate change, and how some of these constraints can be overcome. This study found that climate change combined with globalization, increased human mobility, and pathogen and vector evolution has increased the spread of invasive plant pathogens and other species with high fertility and dispersal. The ability to transfer genes from wild relatives into cultivated elite varieties accelerates the development of novel vegetable varieties. World Vegetable Center breeders have embarked on breeding for multiple disease resistance against a few important pathogens of global relevance and with large evolutionary potential, such as chili anthracnose and tomato bacterial wilt. The practical implications of this are that agronomic practices that enhance microbial diversity may suppress emerging plant pathogens through biological control. Grafting can effectively control soil-borne diseases and overcome abiotic stress. Biopesticides and natural enemies either alone or in combination can play a significant role in sustainable pathogen and insect pest management in vegetable production system. This chapter highlights the importance of integrated disease and pest management and the use of diverse production systems for enhanced resilience and sustainability of highly vulnerable, uniform cropping systems.

The purpose of this paper is to present a criterion for global asymptotic stability of state-space direct-form digital filters employing saturation arithmetic.

An elegant use of induced l _∞ approach (also known as a peak-to-peak approach) is made to develop a criterion for the overflow stability of state-space direct-form digital filters.

The criterion not only guarantees asymptotic stability but also reduces the effect of external interference. The presented method yields better interference attenuation level as compared to a recently reported method. Numerical examples are given to illustrate the effectiveness of the proposed method.

Digital filters are important dynamical systems in signal processing which are used for the processing of discrete signals. During the implementation of higher-order digital filter in hardware or software, introduction of external interference is unavoidable. Therefore, stability analysis of digital filters in the presence of external interference is of much practical importance.

The main result of the paper is reported for the first time and it is useful to establish the asymptotic stability of digital filters in the presence of external disturbances.

The use of extended reality (XR) to create memorable experiences has attracted considerable attention, especially in tourism. Multisensory XR offers a new way of virtually previewing a destination before physical holidays. This study aims to explore how multisensory XR can be used at each stage of the tourism experience journey. This study established a model for how destination-image formation is affected by multisensory XR in each phase of tourism experience.

The authors followed the preferred reporting items for systematic reviews and meta-analyses guidelines to review studies published between 2013 and 2020, gathered from four research databases. The authors identified the predominant XR technology and sensory stimuli based on the characteristics of various tourism domains. The authors synthesized the previous studies to explain destination-image formation by using multisensory XR.

This study summarized the XR study distribution among the three stages of the tourism experience journey. The authors identified the predominant sensory stimuli and dominant XR application and developed a destination-image formation model by using multisensory XR.

This study highlights the holistic approach of multisensory XR in the tourism experience journey in relation to various tourism domains. It also contributes to destination-image formation in the virtual environment by providing multisensory experiences of predominant sensory stimuli at each stage.

多感官扩展现实对旅游体验的影响

运用扩展现实（XR）来创造令人印象深刻的体验在旅游领域得到了瞩目。多感官XR提供了用虚拟方式预览景区的新途径。本研究探讨了多感官XR是怎样在旅游体验的各个阶段进行运用。我们建立了一个关于目的地形象行程是怎样收到多感知XR在每一个旅游体验阶段影响模型。

本研究遵循了系统评价的首选的报告项目对由四份数据库综合提取的2013 到2020 年间发表的文章用系统文献综述和荟萃分析方法进行了梳理。基于不同旅游领域我们发现了首要的XR技术和感官刺激因素。本研究综合了之前文章用多感官XR来解释目的地形象的产生的文章。

我们总结了XR 基于旅游体验三个阶段的研究的分布. 我们确定了主导的感官刺激因素和主导的XR应用技术并且用多元感知XR研发了目的地形象形成的模型。

本研究突出了多元感官XR在旅游体验跨越多层旅游领域的整体性方式。本研究并且通过提供每阶段的主打感官刺激元素在多感官体验过程中对虚拟环境下的目的地形象产生做出了贡献。

This paper aims to examine the effect of music tempo on impatience in intertemporal tradeoff decisions. It finds that fast (vs slow) tempo music increases impatience. This occurs because fast (vs slow) tempo music makes temporal distance, and hence the waiting time until the receipt of delayed benefits, feel subjectively longer.

The study tests the hypotheses through four laboratory experiments.

In Studies 1a (N = 88) and 1b (N = 98), the results demonstrate that when participants listen to fast (vs slow) tempo music, they judge temporal distance to be longer. In Study 2 (N = 94), the results demonstrate that when participants listen to fast (vs slow) tempo music, they become more impatient when considering a smartphone purchase. In Study 3 (N = 218), the results demonstrate that when participants listen to fast (vs slow) tempo music, they become more impatient when considering a gift certificate, and that this delay discounting effect is attributable to the change in their temporal distance judgment.

The current research reports a novel factor that influences impatience in intertemporal decisions and temporal distance judgment.

This research provides useful guidelines for retail managers and marketers regarding the effect of background music in stores.

This is the first study demonstrating a music tempo effect on temporal distance judgment and impatience in intertemporal tradeoff decisions.

People believe that they know who they are and that who they are matters for what they do. These core beliefs seem so inherent to conceptualizations of what it means to have a self as to require no empirical support. After all, what is the point of a concept of self if there is no stable thing to have a concept about and who would care if that concept was stable if it was not useful in making it through the day? Yet the evidence for action-relevance and stability are surprisingly sparse.

This paper outlines the identity-based motivation theory, a theoretical approach that takes a new look at these assumptions and makes three core predictions as to when an accessible self-concept influences behavior. These are termed “dynamic construction”, “action-readiness”, and “interpretation of difficulty”. That is, rather than being stable, which identities come to mind and what they mean are dynamically constructed in context.

People interpret situations and difficulties in ways that are congruent with the currently active identities and prefer identity-congruent to identity-incongruent actions. When action feels identity-congruent, experienced difficulty highlights that the behavior is important and meaningful. When action feels identity-incongruent, the same difficulty suggests that the behavior is pointless and “not for people like me.”

The usage of additive manufacturing (AM) technology in industries has reached up to 50 per cent as prototype or end-product. However, for AM products to be directly used as final products, AM product should be produced through advanced quality control process, which has a capability to be able to prove and reach their desire repeatability, reproducibility, reliability and preciseness. Therefore, there is a need to review quality-related research in terms of AM technology and guide AM industry in the future direction of AM development.

This paper overviews research progress regarding the QC in AM technology. The focus of the study is on manufacturing quality issues and needs that are to be developed and optimized, and further suggests ideas and directions toward the quality improvement for future AM technology. This paper is organized as follows. Section 2 starts by conducting a comprehensive review of the literature studies on progress of quality control, issues and challenges regarding quality improvement in seven different AM techniques. Next, Section 3 provides classification of the research findings, and lastly, Section 4 discusses the challenges and future trends.

This paper presents a review on quality control in seven different techniques in AM technology and provides detailed discussions in each quality process stage. Most of the AM techniques have a trend using in-situ sensors and cameras to acquire process data for real-time monitoring and quality analysis. Procedures such as extrusion-based processes (EBP) have further advanced in data analytics and predictive algorithms-based research regarding mechanical properties and optimal printing parameters. Moreover, compared to others, the material jetting progresses technique has advanced in a system integrated with closed-feedback loop, machine vision and image processing to minimize quality issues during printing process.

This paper is limited to reviewing of only seven techniques of AM technology, which includes photopolymer vat processes, material jetting processes, binder jetting processes, extrusion-based processes, powder bed fusion processes, directed energy deposition processes and sheet lamination processes. This paper would impact on the improvement of quality control in AM industries such as industrial, automotive, medical, aerospace and military production.

Additive manufacturing technology, in terms of quality control has yet to be reviewed.