Quality and relevance of domain-specific search: A case study in mental health

When searching for health information, results quality can be judged against available scientific evidence: Do search engines return advice consistent with evidence based medicine? We compared the performance of domain-specific health and depression search engines against a general-purpose engine (Google) on both relevance of results and quality of advice. Over 101 queries, to which the term ‘depression’ was added if not already present, Google returned more relevant results than those of the domain-specific engines. However, over the 50 treatment-related queries, Google returned 70 pages recommending for or against a well studied treatment, of which 19 strongly disagreed with the scientific evidence. A domain-specific index of 4 sites selected by domain experts was only wrong in 5 of 50 recommendations. Analysis suggests a tension between relevance and quality. Indexing more pages can give a greater number of relevant results, but selective inclusion can give better quality.     

豆渣固体发酵生产灵芝菌丝粉条件优化及三萜化合物含量的测定

利用豆渣代料固体发酵灵芝菌丝粉,结果表明菌丝生长势与菌丝培养温度、培养料/糖比密切相关,培养温度在28℃,料/糖比为100：2,菌丝生长势最强;以单位重量菌丝粉含三萜化合物量为目标函数,利用豆渣培养基培养灵芝菌丝体的最佳条件则为料/糖比为100：2;培养温度为24℃;培养时间为菌丝满瓶后12d.每g菌丝粉三萜化合物含量可达2.44mg.灵芝菌丝特有三萜化合物含量可间接反映菌丝粉中纯菌丝含量及灵芝多糖的含量.     

单直管型科氏质量流量计的力学模型研究

本文对单直管型科里奥利质量流量计的测量原理进行了详细论述。基于典型的单检测管结构,将它简化成简支梁,分析其受力,推导了单直管型科氏质量流量计的力学模型、振动频率和旋转角速度的计算公式。另外,本文还给出了检测电路图,对信号进行处理。     

专利技术再创新及其查新

针对目前我国知识产权意识和企业核心竞争力薄弱,科研经费投入不足的现状,提出有必要开展专利技术再创新,从而在已有专利基础上开发出具有自主知识产权的专利技术。介绍日本和国内开展专利技术再创新的情况,特别介绍该专项在上海的开展情况,从查新角度对专利技术再创新的查新与一般查新的异同点进行比较,并介绍项查新具体的操作方法。     

墓室千秋丹青——柿园梁王墓四神壁画

陈列于河南博物院的四神壁画（又名四神云气图）,是河南博物院的九大镇院之宝之一,出自河南永城芒砀山西汉梁国王陵区柿园汉墓。此壁画规模之大,时代之早、保存之完整、文化内涵之丰富、绘画艺术之高超,为汉墓中所罕见,实为古代艺术品中的佳作。     

文白之争的较量兼及对新文学发展的影响

现代文学史上有关文言文与白话文的论争主要有三次,内容则以其优劣、死话、雅俗、正统与非正统等问题而展开。新文学的拥护者与反对者在正反的较量中,也推动了新文学的向前发展,特别是将新文学的观念日益普及深入到中国更多更广的人群里,所谓真理愈辩愈明,此为一显著事例。     

中西方思维方式的差异与翻译

探讨中西方思维方式的差异及其在英汉两种语言中的表现和对翻译的影响。目的是通过这种对比,提高翻译的质量,使译文更自然、更准确、更符合目的语的思维方式。     

Motion characteristics of novel floating foundation for offshore wind turbine

A novel floating foundation to support the NREL offshore 5 MW wind turbine was designed conceptually by combining the characteristics of barge and Spar. The main focus was structural design and hydrodynamic modelling. Based on this novel floating foundation, the hydrodynamic performance was investigated in the frequency domain and time domain by using the wave analysis software HydroD and DeepC from Det Norske Veritas. The frequency domain analysis was conducted to investigate the effects of the incident wave angle and water depth. The time-domain analysis was carried out to evaluate the response of the floating foundation under a selected operational condition. The hydrodynamic performances of this floating foundation with respect to time series and response spectra were also investigated in this study.     

关于会计学科教学改革的思考

当前世界经济正在日新月异地变化着，产业信息化、经济全球化的趋势已不可逆转。新的经济时代对会计人才的需求发生了显变化，迫切要求我们的会计教育，特别是培养高级会计人才的高校会计教育进行全方位的改革，包括教学目标的定位、教学内容的改良，同时也包括教学方法和手段的革新。本通过分析新经济时代对会计的影响与要求以及传统会计教学方法存在的问题，对高校会计教学改革进行探讨，并提出了一些设想和建议。     

中国气候对全球气温增暖的响应

近４０年来，在全球气候变暖的背景下，中国气候也有明显的增暖趋势，北部增暖最明显，与全球平均温度变化相似，长江流域变暖不明显．冬季增暖最突出，夏季在部分地区有降温现象．近４０年，全国平均降水量趋于减少，北部减少最明显，中心在华北及山东半岛；长江中上游降水偏丰．表明近期我国气候对全球气温变暖的响应特点，主要表现表式：北方为暖—干型；长江流域为冷—湿型；华南大部为弱暖—干型