数字图像处理技术在工程地质编录中的应用

文章介绍了数字图像处理(DIP)技术在工程地质编录方面的新应用及其发展动向,讨论了其对传统的地质编录方法和手段带来的改变和冲击,并论述了数字图像处理在工程地质编录中的主要应用有宏观岩芯图像扫描分析系统、数字式全景钻孔摄像处理系统、地质编录信息系统等。     

Levinthal 佯谬到蛋白质结构预测

蛋白质折叠技术是生物工程的新“单元操作”，是生命科学领域的前沿课题之一。为了人们对此方面知识的了解，综述了Levinthal佯谬与蛋白质结构预测等方面的研究技术。     

中国感光材料行业的竞争与发展态势

本文收集了大量世界感光材料行业的资料，并进行了翔实的比较，分析和研究。文章分析了我国感光材料行业的竞争格局和发展趋势，得出在未来10年我国传统银盐与数字成像将相互并存，共同发展的结论。     

女性农民工媒介形象的偏差塑造现象研究

随着城乡统筹步伐的加快,越来越多的女性农民工涌进城市。传媒对女性农民工群体关注不够,在报道规模、报道质量上存在着话语权缺失化、形象类型化、权益浅表化现象。传媒从业人员的偏见和歧视、对商业利益的追求、职业道德的缺失造成了这类传播现象。鉴于此,在报道中广开言论渠道,坚持客观公正,拓展理性报道,是重构女性农民工真实传媒形象的有效途径。     

成像光谱技术及其在土地动态监测中的应用

20世纪80年代出现并于20世纪90年代蓬勃兴起的成像光谱遥感技术已经受到国内外学术界的广泛重视,代表了遥感定量化的发展方向。成像光谱技术提供的连续窄波段成像技术,使它在地质填图、精细农业、资源调查等定量遥感应用中具有极大的潜力。土地动态监测是土地管理工作中的重要环节,研究成像光谱技术在土地动态监测中的应用具有十分重要的意义。本文介绍了成像光谱技术及其在土地动态监测中的应用,并对利用成像光谱技术进行土地动态监测的关键技术进行了阐述。     

Cost effectiveness of a 92-gene assay for the diagnosis of metastatic cancer

Objectives:

To estimate the clinical and economic trade-offs involved in using a molecular assay (92-gene assay, CancerTYPE ID) to aid in identifying the primary site of difficult-to-diagnose metastatic cancers and to explore whether the 92-gene assay can be used to standardize the diagnostic process and costs for clinicians, patients, and payers.

Methods:

Four decision-analytic models were developed to project the lifetime clinical and economic impact of incorporating the 92-gene assay compared with standard care alone. For each model, total and incremental costs, life-years, quality-adjusted life-years (QALYs), incremental cost–effectiveness ratios (ICERs), and the proportion of patients treated correctly versus incorrectly were projected from the payer perspective. Model inputs were based on published literature, analyses of SEER (Surveillance Epidemiology and End Results) data, publicly available data, and interviews with clinical experts.

Results:

In all four models, the 92-gene assay increased the proportion of patients treated correctly, decreased the proportion of patients treated with empiric therapy, and increased quality-adjusted survival. In the primary model, the ICER was $50,273/QALY; thus, the 92-gene assay is therefore cost effective when considering a societal willingness-to-pay threshold of $100,000/QALY. These findings were robust across sensitivity analyses.

Conclusions:

Use of the 92-gene assay for diagnosing metastatic tumors of uncertain origin is associated with reduced misdiagnoses, increased survival, and improved quality of life. Incorporating the assay into current practice is a cost-effective approach to standardizing diagnostic methods while improving patient care. Limitations of this analysis are the lack of data availability and resulting modeling simplifications, although sensitivity analyses showed these to not be key drivers of results.     

兰花的分子标记研究进展

综述了限制性内切酶片段长度多态性、随机扩增多态性、扩增片段长度多态性、简单重复序列、单核苷酸多态性等分子标记技术及其衍生技术在兰花分类鉴定研究中的应用,分析了各个技术的主要特点,阐述了各个技术的应用情况,展望了分子标记技术辅助兰花分类鉴定的未来发展。     

长波红外偏振探测性能分析与成像研究

为了分析研究长波红外偏振探测的原理及探测过程,本文根据偏振成像的原理,设计搭建了一套的长波红外偏振探测装置,在实验室环境下对其进行了性能测试,测试结果表明整个装置具有较好的性能指标,并分析了影响探测结果的因素。同时在外场进行了典型目标的长波红外偏振成像,对人造目标及自然环境分别进行了辐射成像、偏振度成像及偏振角成像,通过对比分析,结果表明长波红外偏振成像具有其独特的优势与特点,对于实际探测应用存在着一定的意义与价值。     

影像人网站建设与规划

高等学校校园网站建设日趋成熟,针对不同特色开创的网站也不计其数,影像人网站是牡丹江医学院医学影像学院根据专业自身特点,为影像人提供一个学习、交流的平台而创办的。目前,网站运营良好,点击率节节升高,累计已过万余次。在百度等大型搜索引擎中输入"影像人",影像人网站排在首位。文章展示了网站建设的现状,更提出未来发展规划。     

Risk choice and emotional experience: a multi-level comparison between active and passive decision-making

Abstract

Previous studies have consistently indicated the important role of emotional experience in decision-making. While both active and passive decision-making coexist in our daily lives, whether and how active and passive decision-making induce different emotional experience remains unclear. In the present research we conduct three studies to examine differences in emotional experience associated with active and passive decisions at multiple levels. First, at the individual level, using both active and passive modes of the Balloon Analog Risk Task in a laboratory behavior study, we demonstrate that active decision-making is associated with more positive emotional experience compared to passive decision-making, including more happiness, less distress, a greater sense of control, and a stronger sense of achievement. Second, at the neural level, we use functional magnetic resonance imaging and find greater activation in the brain’s emotional circuits during active decisions compared to passive decisions, regardless of the decision outcomes. Finally, at the population level, we conduct a large-scale survey to capture the perception of emotional experience during real-world active and passive decisions, and our results confirm that active decisions engender a greater sense of achievement and sense of control and people prefer active decisions to passive decisions. These findings provide valuable insights into the role of emotion experience in decision-making research and practices.