Hartford

哈特福德
  • 文章类型: Journal Article
    众包在线食物图片,当与食品图像识别技术相结合时,有潜力为餐厅营养环境的评估提供具有成本效益和可扩展的解决方案。虽然先前的研究已经探索了这种方法并验证了食品图像识别技术的准确性,关于众包食物图像作为大规模评估的主要数据来源的有效性仍然未知。在本文中,我们从多个来源收集数据,并全面检查使用众包食物图像评估大哈特福德地区餐厅营养环境的有效性。我们的结果表明,虽然众包食品图像在餐厅营养质量的初步评估和流行食品的识别方面是有用的,它们在多个层面上受到选择偏差的影响,不能完全代表餐厅的营养质量或顾客的饮食行为。如果被雇用,食物图像数据必须补充替代数据源,例如实地调查,商店审计,和商业数据,提供更具代表性的餐厅营养环境评估。
    Crowdsourced online food images, when combined with food image recognition technologies, have the potential to offer a cost-effective and scalable solution for the assessment of the restaurant nutrition environment. While previous research has explored this approach and validated the accuracy of food image recognition technologies, much remains unknown about the validity of crowdsourced food images as the primary data source for large-scale assessments. In this paper, we collect data from multiple sources and comprehensively examine the validity of using crowdsourced food images for assessing the restaurant nutrition environment in the Greater Hartford region. Our results indicate that while crowdsourced food images are useful in terms of the initial assessment of restaurant nutrition quality and the identification of popular food items, they are subject to selection bias on multiple levels and do not fully represent the restaurant nutrition quality or customers\' dietary behaviors. If employed, the food image data must be supplemented with alternative data sources, such as field surveys, store audits, and commercial data, to offer a more representative assessment of the restaurant nutrition environment.
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  • 文章类型: Journal Article
    深度学习模型可以识别图像中的食物,并获得它们的营养信息。包括卡路里,大量营养素(碳水化合物,脂肪,和蛋白质),和微量营养素(维生素和矿物质)。该技术尚未用于餐厅食品的营养评估。在本文中,我们在Tripadvisor和GooglePlace上众包了大哈特福德地区470家餐厅的15,908张食物图像。这些食物图像被加载到专有的深度学习模型(CalorieMama)中进行营养评估。我们使用手动编码来验证基于膳食研究的食物和营养数据库的模型准确性。所得到的营养信息在餐厅级别和普查区级别都被可视化。与手动编码相比,深度学习模型的准确率为75.1%。它为民族食品提供了更准确的标签,但无法识别份量,某些食品(例如,特色汉堡和沙拉),和图像中的多个食物项目。基于派生的营养信息进一步提出了餐厅营养(RN)指数。通过众包食物图像和深度学习模型识别餐厅食物的营养信息,该研究为社区食物环境的大规模营养评估提供了试点方法。
    Deep learning models can recognize the food item in an image and derive their nutrition information, including calories, macronutrients (carbohydrates, fats, and proteins), and micronutrients (vitamins and minerals). This technology has yet to be implemented for the nutrition assessment of restaurant food. In this paper, we crowdsource 15,908 food images of 470 restaurants in the Greater Hartford region on Tripadvisor and Google Place. These food images are loaded into a proprietary deep learning model (Calorie Mama) for nutrition assessment. We employ manual coding to validate the model accuracy based on the Food and Nutrient Database for Dietary Studies. The derived nutrition information is visualized at both the restaurant level and the census tract level. The deep learning model achieves 75.1% accuracy when compared with manual coding. It has more accurate labels for ethnic foods but cannot identify portion sizes, certain food items (e.g., specialty burgers and salads), and multiple food items in an image. The restaurant nutrition (RN) index is further proposed based on the derived nutrition information. By identifying the nutrition information of restaurant food through crowdsourced food images and a deep learning model, the study provides a pilot approach for large-scale nutrition assessment of the community food environment.
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  • 文章类型: Journal Article
    Substance abuse is a complex and challenging public health problem. In order to better address substance abuse, it is vital to understand the perspectives of people whose communities are disproportionately impacted by it. This photovoice study aimed to understand how community members perceive the relationship between place, health, and substance abuse in Hartford, Connecticut, one city grappling with substance abuse and its related challenges. Findings revealed three themes: perceived place-based environmental risk factors for substance abuse; coping strategies to maintain sobriety in this challenging environmental context; and participants\' recommendations for addressing substance abuse. Implications are discussed.
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  • 文章类型: Journal Article
    OBJECTIVE: People retain culinary customs when they migrate. We tested this commitment via the study of Puerto Rican fresh produce markets in the continental United States over time, 18 yr, and space, by comparisons with source markets in Puerto Rico (PR).
    METHODS: A survey of Puerto Rican markets in Hartford (HT), Connecticut in 1993-1994 was repeated in 2009-2010. A comparative study was made at open-air markets in PR in 2009. Surveys recorded fresh crops, and interviews with vendors and Hartford Puerto Rican residents provided context.
    RESULTS: We recorded 84 plant crops (64 species; 32 families) for seven categories. The largest category was viandas (fresh, starchy \"root\" crops and immature fruits), followed by saborizantes (flavorings). In the second HT survey, 80% of the crops were still present. And ∼90% of the HT 1993-1994 crops and ∼75% of the HT 2009-2010 crops were shared with markets in PR.
    CONCLUSIONS: On the basis of our results, we suggest two new concepts. The persistence of these largely tropical foods in a temperate market far removed from tropical PR shows the importance of basic foods as an element of cultural identification. We recognize this stability as an example of \"culinary cultural conservation\". Second, analysis of these fresh produce markets leads to the conclusion that viandas are the most prominent in diversity, persistence over time and distance, volume, and in terms of consumers\' \"willingness to pay\". Accordingly, we consider the viandas a good example of a \"cultural keystone food group\", a food group that is emblematic of a community\'s culinary conservation.
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