新《清单计价规范》合同类型研究

入世后中国工程造价业呈现出前所未有的繁荣和生机,2008版新《清单计价规范》的实施带来了机遇和挑战。首先对比了五种合同类型和国际常用合同,继而解析了新《清单计价规范》的相关条款,最后依托具体的工程案例,力证单价合同有利于风险的合理分担,惠及承发包双方。     

沉管灌注桩在工程计量与计价过程中的难点分析

结合沉管灌注桩施工工艺,针对桩在定额计价模式和清单计价模式下的工程量计算内容、计算规则和计价特点进行研究,剖析这类桩在工程计量与计价过程中的难点、容易出现的错漏点以及注意事项。     

市售15个产区黑木耳营养品质综合评价

以市售15个产区黑木耳为研究对象,以13种营养成分作为品质评价指标,利用主成分分析法及隶属函数法对市售黑木耳进行品质综合评价,并利用聚类分析法进行黑木耳品质分类。结果表明：从13种营养成分中提取出4个主成分,其累计贡献率达81.52%,可较好地反映黑木耳品质的综合信息;铁、锌、总脂肪酸、粗多糖和灰分含量可作为15个产区黑木耳品质综合评价的指标;隶属函数法评价出15个产区黑木耳品质的优劣;聚类分析将15个产区黑木耳营养品质划分为四大类。     

模具选材中的模糊综合评价模型

论述了模具选材的模糊综合评价问题,讨论了评价指标体系的确定及其结构,提出了用于模具选材方案评价的多目标多层次模糊综合评价的一般模型,并以塑料模具型芯材料选择为例,进行计算说明。     

Public perspective on co-firing hydrogen with natural gas in power plants in South Korea

The South Korean government plans to gradually change existing power generation from natural gas (NG) to hydrogen co-fired with NG to help abate emissions of greenhouse gases (GHGs). This research aims to explore people's additional willingness to pay (AWTP) for consuming one kWh of electricity generated from a mixture of 35% hydrogen and 65% NG compared to electricity generated from 100% NG. Contingent valuation (CV) was applied to obtain data on the AWTP. A CV survey of 1000 randomly chosen people was conducted to obtain data, a one-and-one-half-bounded model was adopted to elicit the AWTP from interviewees, and a spike model was used to analyze the AWTP observations with zeros. The average AWTP was obtained as KRW 24.3 (USD 0.022) per kWh. Since the electricity price was KRW 107.9 (USD 0.096) per kWh, the value that people place on co-firing, which means the sum of the price and the AWTP, was KRW 132.2 (USD 0.118) per kWh. Because the total cost of the power supply for hydrogen co-fired with NG is KRW 145.7 (USD 0.130) per kWh, a subsidy of at least KRW 13.5 (USD 0.012) per kWh must be provided to encourage co-firing to mitigate GHG emissions.     

新形势下给排水科学与工程特色专业建设探讨

分析给排水科学与工程特色专业建设所面临的形势,指出特色专业建设应该充分考虑专业评估认证背景、学生能力培养达成的新挑战、"新工科"工程教育发展新要求、创新教育新驱动、"六卓越一拔尖"计划2. 0新战略等时代新需求。从培养体系、教师队伍、知识体系、课程建设、教学环节、实践实训与创新体系等方面,介绍安徽工业大学给排水科学与工程特色专业的建设情况,并就给排水科学与工程特色专业建设的实际案例进行阐析。认为给排水工程能力实训是学生从掌握专业理论知识到培养创新能力之间的重要桥梁,提出理论—虚拟仿真—实践实训—创新特色的高素质人才培养体系。     

On the p-Adic Complexity of the Ding-Helleseth-Martinsen Binary Sequences

The purpose of this paper is to determine the p-adic complexity of the Ding-Helleseth-Martinsen (DHM) sequences with period N = 2q, where q ≡ 5 (mod 8) is a prime number. We firstly use the p-adic exponential valuation, cyclotomic numbers of order four,"Gauss periods"and"quadratic Gauss sums"on finite field Fq and valued in ZpN?1 to determine the p-adic complexity of the DHM sequences.     

The impact of honey fraud information on the valuation of honey origin: Evidence from an incentivized economic experiment

While the adulteration or mislabeling of products as honey, or honey fraud, is a major concern for industry and regulators—leading to a burgeoning research literature on documenting characteristics of authentic, place-specific honey and developing new methods of detecting honey fraud, there is little evidence about the impact of honey fraud occurrence on consumer preferences. Studying consumer response to honey fraud is complicated by the unpredictable nature of detection of fraud and consumer exposure to information about fraud, which makes consumer experiments a valuable tool for understanding consumer response to honey fraud. In this binding valuation experiment, we examine consumer willingness to pay for four types of honey before and after exposure to honey fraud information (versus a control group): imported, domestic (US), local (Lincoln, Nebraska), and organic (no origin specified) honey. When consumers do not have information about honey fraud, they do not value US honey any more than imported honey, though they are willing to pay a premium for both organic and local honeys. When consumers read information about honey fraud, their valuation of imported honey decreases significantly—by over 20%. Valuation of the organic honey also decreases, though by a smaller amount (4%). On the other hand, valuation of both US and local honey increases. The combined effect of the decreased valuation of imported honey and increased valuation of US-produced honey yields a significant increase in the premiums that consumers are willing to pay for US and local honey over the imported honey. The results suggest that increased consumer awareness about honey fraud may lead to stronger preferences for honey produced in the US.