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The presence of cracks reduces egg quality and safety, and can easily cause food safety hazards to consumers. Machine vision-based methods for cracked egg detection have achieved significant success on in-domain egg data. However, the performance of deep learning models usually decreases under practical industrial scenarios, such as the different egg varieties, origins, and environmental changes. Existing researches that rely on improving network structures or increasing training data volumes cannot effectively solve the problem of model performance decline on unknown egg testing data in practical egg production. To address these challenges, a novel and robust detection method is proposed to extract max domain-invariant features to enhance the model performance on unknown test egg data. Firstly, multi-domain egg data are built on different egg origins and acquisition devices. Then, a multi-domain trained strategy is established by using Maximum Mean Discrepancy with Normalized Squared Feature Estimation (NSFE-MMD) to obtain the optimal matching egg training domain. With the NSFE-MMD method, the original deep learning model can be applied without network structure improvements, which reduces the extremely complex tuning process and hyperparameter adjustments. Finally, robust cracked egg detection experiments are carried out on several unknown testing egg domains. The YOLOV5 (You Only Look Once v5) model trained by the proposed multi-domain training method with NSFE-MMD has a detection mAP of 86.6% on the unknown test Domain 4, and the YOLOV8 (You Only Look Once v8) model has a detection mAP of 88.8% on Domain 4, which is an increase of 8% and 4.4% compared to the best performance of models trained on a single domain, and an increase of 4.7% and 3.7% compared to models trained on all domains. In addition, the YOLOV5 model trained by the proposed multi-domain training method has a detection mAP of 87.9% on egg data of the unknown testing Domain 5. The experimental results demonstrate the robustness and effectiveness of the proposed multi-domain training method, which can be more suitable for the large quantity and variety of egg detection production. [ABSTRACT FROM AUTHOR]

As the melting of Arctic Sea ice because of global warming creates new shipping routes and energy resources, the post-Cold War peace and stability of the Arctic has been shattered. It has once again become a strategic location for multinational rivalries, attracting widespread attention in international geopolitical circles. Compared to other regions of the world, studying the Arctic region from a Western geopolitical perspective is at the forefront of international research. Although China, as a near-Arctic country, has developed geopolitical research on the Arctic in response to its practical needs, domestic research in this field started late, with room for improvement in its breadth and depth. Therefore, 98 papers in the Web of Science core database that are highly relevant to Arctic geopolitics are selected as the object of the study. Through a literature review, we summarize the development of Arctic research from a Western geopolitical perspective, and the shift in perspective and hot topics; we adopt a forward-looking perspective of future research development trends to provide reference for innovative research in this field in China. The results reveal the following: (1) Research on the geopolitics of the Arctic has been conducted in a wide range of fields and topics in Western academia, with some correlation among the topics, although the links among the studies are not strong, and the research scale generally shows a fluctuating growth trend. (2) The research content, composed of six major fields (boundary and territorial politics, Arctic shipping routes, Arctic resource development, Arctic geo-strategy, Arctic security and governance, and indigenous population issues), focus on politics and economics but is lack of cultural research. (3) Under the influence of aesthetic humanism and the "cultural and institutional turn," the trend in the cross-fertilization of geopolitical, geo-economic, and geo-cultural perspectives has increasingly become more obvious. (4) Research on the Arctic from a geopolitical perspective has been relatively fruitful, although there remain shortcomings in the depth of theoretical research, breadth of research scale, diversity of research methods, and geo-economic and geo-cultural research paradigms, which require further development. Future research will generate new ideas and directions in immaterial areas such as theoretical framework studies, interdisciplinary studies, and emotional culture, and will focus more on the role of multiple actors, such as indigenous peoples and NGOs, in geopolitical knowledge production and power competition.

Background: There is mounting evidence for the health benefits of aromatic scents for the older people with dementia. However, existing research has focused on indoor aromatherapy using essential oils. It is necessary to explore the health benefits of smellscapes in the outdoor environment for older people with dementia. Aims and Objectives: This scoping review aims to examine existing evidence for smellscape as a healing factor in institutional garden for older people with dementia, try to bridge the knowledge gaps between outdoor sensory garden scents and aromatherapy to develop green care techniques that incorporate outdoor activities. Methods: Seven databases (Scopus, PubMed, PsycINFO, CINAHL, MEDLINE, Embase and Web of Science) were searched with English language articles published between 1990 and 2022. The PRISMA‐ScR Checklist was used. Results: Out of 1013 articles, 11 meet the inclusion criteria. The comprehensive health outcomes include five aspects: mental health; physical health; reduced agitation behaviour; improved cognitive function; and well‐being. These aspects are part of the rehabilitation model comprising the person (older people with dementia), environment (garden smellscapes) and outdoor activities (active or passive interventions or a combination). Conclusions: The smellscape, as a healing factor in the garden, not only benefits from evidence on indoor aromatherapy but also creates a sensory environment for older people with dementia by compensating for functional impairment, activity support and environmental creation, thereby promoting enhanced health and well‐being. Relevance to Clinical Practice: The research on the healing effects of smellscapes presented in this review offers a novel environmental intervention technique for transferring evidence on essential oils to outdoor sensory gardens. This green care technique is suggested to assist in the creation of healing environments and interventions for people with dementia who cannot be cured. No Patient or Public Contribution: This scoping review did not directly involve patient or public contributions to the manuscript. [ABSTRACT FROM AUTHOR]

The proposed China - Nepal Railway starts in Shigatse City, Tibet, China, and reaches Kathmandu, Nepal, through the Yaluzangbu River, Pengqu River and Gyirong Basins. It is about 600 km. About 2/3 of the length of the line is located in the Yaluzangbu River and Pengqu River Basins. The large number of debris flow gullies is a disaster type that has a controlling effect on the route scheme. Firstly, based on the river knickpoint theory of the uplift of the Qinghai-Tibet Plateau, it is determined that the Yaluzangbu River section of the China - Nepal Railway is in the early stage of geomorphic rejuvenation, and the Pengqu River section is still in the old-age geomorphic stage. Based on the phenomenon that the proportion of planation surface in the Pengqu River Basin is much larger than that in the Yaluzangbu River Basin, it is analyzed that the existence of planation surface will affect the time of surface confluence and reduce the connectivity of debris flow basin. Based on this, it is concluded that the movement conditions of debris flow in the Yaluzangbu River Basin are better than those in the Pengqu River Basin. Finally, combined with the characteristics that the riverbed of the Yaluzangbu River Basin railway will continue to rise, and there is a broad sloping zone of diluvial gravel in the piedmont of the Pengqu River Basin, it is proposed the key points of disaster-reduction route selection that the Yaluzangbu River Basin needs to improve the design elevation of the line as a whole, and the Pengqu River Basin should adopt route selection to avoid the same bank. The research of this paper can provide scientific basis for the optimization of China-Nepal railway line scheme, and the work of promoting the macroscopic theory of plateau uplift to the level of engineering application is expected to produce exemplary effect. [ABSTRACT FROM AUTHOR]