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111.
选择体重30kg左右的太行山野猪与长白猪、汉普夏、上海白猪的杂种猪分为9组,每组12只,公母各半,进行饲养试验,测定太行山野猪不同杂交组合的生长性能。饲养试验结束后,每组随机选择4头屠宰,进行屠宰性能测定。结论:①野猪血缘含量越高,生长性能越低。②长白猪与野猪的杂交组合比其他杂交组合有较好的生长性能。③野猪血缘含量越高,瘦肉率越高。④汉普夏猪与野猪的杂交组合比其他杂交组合有较好的屠宰性能。 相似文献
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文章研究了集电环在油电混合动力汽车双转子电机中的应用,在混合动力系统转速高、电流大、可用空间小等条件约束下,实现集电环的高寿命、低温升,而且故障少,可靠性高。 相似文献
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As clinics strive to select information technology contractors that meet their particular outsourcing needs, the medical sector
urgently needs evaluation criteria for outsourcing to information technology contractors to alleviate unnecessary risks and
achieve an excellent performance. Therefore, this work presents an entropy combined technique for order preference by similarity
to ideal solution (TOPSIS)-based decision-making method for clinics to objectively assess the quality of an information technology
supplier when outsourcing their medical information needs, as an alternative to previous decision-making approaches based
on subjective evaluations. Each sub-criterion for outsourcing vendors is evaluated using the Delphi method. Moreover, results
of interviews with experts are integrated with the entropy method to calculate each criterion of an objective evaluation weight
for medical information system (MIS) vendors. Furthermore, a TOPSIS-based survey is designed using comparison to effectively
respond to MIS outsourcing demand scores for each item. Furthermore, the proposed entropy and TOPSIS-based decision-making
method can provide administrators in hospital clinics with a decision-making and evaluation criteria that actively encourage
the medical sector to outsource its information technology needs to contractors. 相似文献
116.
文章运用TOPSIS法研究安徽省“两山一湖”旅游区经济总量的有关指标,同时TOPSIS法也是系统工程中有限方案多目标决策分析中比较常用的方法,通过对指标的选择可以得出TOPSIS法是研究经济总量指标的有效方法。 相似文献
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Abstract: Over the last decade, electronic limit-order trading systems have been sweeping securities exchanges around the world. This paper studies a transitional case, namely, the commencement of trading of a group of moderately liquid stocks on SETS of the London Stock Exchange. The evidence reveals that the liquidity of those stocks dropped substantially after the introduction of the limit order book and the removal of the market makers' obligations. This transition provides an example that a hybrid market with a limit order book and voluntary dealers may not perform as well as a dealership market with obligatory market makers. 相似文献
119.
Accommodation accounts for one of the biggest expenses while traveling, and deciding where to stay is often confusing and time-consuming. Fortunately, travelers have more options than ever before because of the substantial growth of the peer-to-peer (P2P) short-term rentals in the sharing economy. Designing a user-friendly system that considers travelers’ preferences in choosing the right accommodation can enhance customer satisfaction and increase profitability. We propose a dynamic decision support system based on the theory of multi-criteria decision making to assist travelers in personalizing their preferences and finding quality accommodations in the dominant P2P market that aligns with those preferences. We use the fuzzy best-worst method to measure the intensity of the user’s preferences and the fuzzy technique for order of preference by similarity to the ideal solution (TOPSIS) to score and evaluate alternative P2P rental properties. We present a case study in the P2P rental accommodations industry to demonstrate the applicability of the method proposed in this study. 相似文献
120.
Tomaž Kolar 《旅游业当前问题》2019,22(4):400-408
This study provides preliminary empirical insight into the contemporary tourist phenomenon of sightrunning. This combined offering simultaneously concurs with and evades theoretical perspectives of hybrid tourists, sport tourism, cultural tourism and urban tourism, favouring examination of such phenomena through first-hand experiences of the participants. For the purpose of the empirical study, automated content analysis was applied in order to analyse 858 reviews of sightrunning tours extracted from Tripadvisor web pages. Results reveal that running is the dominant concept, which refers to a gratifying ‘way to see and experience the city’ (rather than the sights). Additional concepts and themes, such as knowledgeable guides and proper pace, further mediate and effect participant experiences. Findings suggest that sport tourists might be concurrently interested in involving cultural experiences, and this offers some preliminary theoretical and managerial implications. They namely identify the potentially neglected tourist segment, which is of relevance for conceptualization, research and management of tourist offerings and experiences from (and beyond) the perspective of ‘running shoes’. 相似文献