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  1. 1
    دورية أكاديمية

    المؤلفون: 徐昊亮, 靳攀润, 姜继恒, 鲁宗相, 乔颖

    المصدر: 全球能源互联网, Vol 3, Iss 4, Pp 393-403 (2020)

    الوصف: 火电灵活性改造,特别是降低机组最小稳定功率,可有效增强系统调峰能力,缓解弃风弃光问题。但灵活调节需求随风光电源、负荷和电网运行特性动态变化而难以准确估计,火电厂易陷入过度投资或无序竞争的两难抉择而延迟乃至放弃改造,导致实际改造容量远低于国家规划预期。因此,如何在保证可再生能源消纳目标前提下科学规划火电机组的灵活性改造容量成为地区能源管理部门和火电厂共同关注的问题。首先建立了包括机组改造成本、调峰市场交易成本、售电收益损失、深调状态发电成本增量和系统弃电成本五部分费用在内的火电机组灵活性改造广义成本模型,基于随机生产模拟方法在中长期时间尺度下给出了机组年度发电量和广义成本计算方法。以全体火电机组灵活性改造广义成本最低为目标,建立了火电机组灵活性改造容量规划模型,并利用遗传算法求解所提优化模型。仿真算例验证了灵活性改造规划方法的可行性,同时分析了新能源电价等外部条件对规划结果的影响。

    وصف الملف: electronic resource

  2. 2
    رسالة جامعية

    المؤلفون: Hao-Ping Hsu, 徐昊平

    مرشدي الرسالة: Shwu-Ing Wu, 吳淑鶯

    الوصف: 106
    In recent years, many tour operators have entered to the ecotourism market aiming at the trend of ecotourism. In combination of local ecological and environmental resources, these tour operators have promoted a series of themed ecotourism paths and activities to attract tourists from different places. This study conducted literature review and empirical research to explore the influences of consumers’ tourism involvement, tourism values, perception of ecotourism and affection toward ecotourism on attitude toward ecotourism, perceived value of ecotourism, willingness of consumers and actual ecotourism action. Furthermore, association models were established, and the differences on the association models of tourist groups with different tourism frequencies were compared. Convenience sampling was used to survey the consumers who had participated in ecotourism. A total of 787 valid samples were collected. The results showed that:(1) The involvement of the consumers has significantly negative influence on the attitude towards ecotourism.(2) The involvement of consumers has significantly positive influence on perceived value of ecotourism. (3) The consumers' tourism values have significantly positive influence on attitude towards ecotourism. (4) The consumers' tourism values has no significant influence on perceived value towards ecotourism. (5) The consumers' perception of ecotourism has significantly positive influence on attitude towards ecotourism. (6) The consumers' perception of ecotourism has significantly negative influence on perceived value towards ecotourism. (7) The consumers' emotion on ecological environment has significantly positive influence on ecotourism attitude and perceived value. (8) The consumers' perceived value of ecotourism has significantly positive influence on attitude toward ecotourism and consumers' willingness. (9) The consumers' attitude towards ecotourism has significantly positive influence on consumers' willingness.(10) The consumers' willingness has significantly positive influence on actual ecotourism action.

    وصف الملف: 105

  3. 3
    رسالة جامعية

    المؤلفون: Hsu, Hao, 徐昊

    مرشدي الرسالة: Lee, Ken-Fang, 李根芳

    الوصف: 104
    Video games have come a long way since the first electronic game‭ ‬"Spacewar‭!‬‭" ‬was invented at MIT in 1962‭. ‬With amazing animation‭, ‬sophisticated storylines and wild fantasy worlds for players to freely explore‭, ‬modern video games are no longer just entertainment‭, ‬but a cultural phenomenon‭, ‬exerting influence on literature‭, ‬movies‭, ‬music and other areas‭. ‬In a globalized society‭, ‬video games are not only sold in their country of origin‭, ‬but the world over as well‭, ‬creating the need for localization‭. ‬Game localization has existed since the 1980s‭, ‬but was not a focus of translation theorists until the year 2000‭. ‬While many related articles and books have been published in English since then‭, ‬Taiwan has yet seen academic research on this topic‭. ‬This thesis first analyzes game texts through case study and discusses text types and translation strategies through functionalist approaches‭. ‬Moreover‭, ‬a case study of‭ ‬a‭ ‬game localization center is used to introduce the game localization industry in Taiwan and is the basis for discussion on Taiwan’s role in the Asian and world markets‭.‬

    وصف الملف: 155

  4. 4
    رسالة جامعية

    المؤلفون: Ho-Jin Seo, 徐昊辰

    مرشدي الرسالة: Iou-Zen Chen, 陳右人

    الوصف: 103
    Three experiments were conducted to improved high quality pear production at lowland areas in Taiwan. I. Effect of altitude on flower bud formation and necrosis in ‘Shinko’ pears in subtropical Region. Time-specific responses of flower bud formation were investigated in ‘Shinko’ (Pyrus pyrifolia Nakai) pear grown at two altitudes from July through December 2013 in order to determine the suitability of using them as scions in the top-grafting system. Flower bud formation and bud necrosis were determined on each of three sections of one-year-old shoots: terminal, middle, and basal. Flower bud visible started in September in the highland of Li-Shan area, whereas in July in the lowland of Zhou-Lan area. In Li-Shan area, flower bud formation was higher in the middle and basal segments during growing season. However, flower bud formation occurred rapidly in the terminal segment after leaf fall. Flower buds began to development from the terminal segment of the shoot and severe flower bud necrosis was noted in Zhou-lan area. Flower buds developed normally in July however, some of the buds at the basal segment showed browning in early August. During leaf fall, some flower buds showed the symptoms of necrosis with rapid and complete browning. Flower bud necrosis began at the basal segment and progressed rapidly towards middle and terminal sections. Before leaf fall, flower buds fell off when scales swelled. The terminal and middle parts of the current-year shoots Collected on October or later from Li-Shan area, with some flower buds, could be used as scions for top-grafting of ''Shinko'' pear. Each grafting scion is a 3-5cm shoot with one flower bud. Those shoot collected from Zhou-Lan area show necrosis and might not be suitable as scions. II. Effect of cold storage duration on bud-burst and flowering of ‘Shinko’ pear scion. Current year shoot of ‘Shinko’ pear were collected in January, November and December, 2013, respectively, from Li-Shan and Zhou-Lan. Materials were sterilized by 8-HQS for 10 minutes, then stored in 5°C for 0, 2, 4, 6, 8 weeks for those collected in January 2013, and 0, 2, 4, 6 weeks for those collected in November and December Bud burst and flowering ratio were investigated after storage. Ten one-bud-cutting with similar length were incubated in growth chamber at 20/15°C condition for each treatment. The results showed that the bud from Li-Shan sprouted after one week in all treatments and had 90% bud burst rate for those stored for 4 and 6 weeks in the material collected in January, Those collected in November and December after 4-weeks cold storage was the best treatment, which had almost 90% bud bursting. The highest flowering rate of the materials from Li-Shan area was 60%, 40% and 40% for January, November, and December samples, respectively. Both bud burst and flowering rate of shoots collected from Zhou-Lan were low. The shoots from Zhou-Lan area are not suggested to be used due to the low flowering rate and high chilling requirement. III. The potassium to magnesium ratio enables the prediction of water core during cold storage of asian pears Taichung No. 2’ is a new Asian pear cultivar developed in Taiwan with low chilling requirement; however, is likely to develop water core under low temperature storage conditions. The impact of storage time on flesh water core in pears were investigated fruits were harvested from 22 orchards in 2010 and 2011, and analyzed the levels of nutrients in different fruit parts such as the peel, flesh, and core. Calcium and potassium contents were higher in the flesh and peel, respectively, of more severely browned fruits, whereas a lower magnesium content was recorded in the peel and core of these fruits. Nitrogen and potassium contents in the peel, and calcium content in the flesh were positively correlated with the water core severity level. In contrast, the magnesium content in the core was negatively correlated with the water core severity level. However, the nutrient contents in fruits varied between the two sampling years considered. Only the K/Mg ratio was an effective predictor of the water core severity and showed a positive linear correlation in the two years. We recommend that the K/Mg ratio should be lower than 10 to avoid severe water core in pears.

    وصف الملف: 84

  5. 5
    دورية أكاديمية

    العنوان البديل: Electromagnetic vibration analysis of Halbach permanent magnet motor based on sensitivity stratification optimization. (English)

    المصدر: Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban; Jul2024, Vol. 56 Issue 7, p142-153, 12p

    الملخص (بالإنجليزية): In order to solve the problem of electromagnetic vibration caused by radial electromagnetic force of interior permanent magnet synchronous motor, a motor topology structure with Halbach magnetizing mode for piecework permanent magnet and auxiliary slots for rotor was proposed. Firstly, the principle of air gap magnetic density, radial electromagnetic force and electromagnetic vibration of the motor is deduced and analyzed, and the finite element model is established. Secondly, an electromagnetic vibration analysis scheme based on the coupling of electromagnetic field and mechanical field is proposed, and the time and space order Fourier decomposition of the radial electromagnetic force of the motor is carried out. In the mechanical field, the amplitude of the vibration acceleration of the motor stator at different frequencies is analyzed, and the modes of the stator are calculated. On this basis, the hierarchical optimization scheme of motor parameter sensitivity was constructed based on response surface method and multi-objective genetic algorithm, and the Pareto frontier of sample points was obtained to determine the optimal parameters of the motor. Comparing the optimized motor with the ordinary V-type interior motor. Finally, the equivalent stress and total deformation of the rotor were simulated in the mechanical field, and the proposed motor structure was verified to meet the mechanical design requirements. The analysis results show that the radial electromagnetic force amplitude of the proposed structure motor is greatly reduced on the basis of no loss of electromagnetic torque, which restrains the groove torque, improves the air gap magnetic density and the sinusoidal degree of back potential, improves the electromagnetic performance of the motor and restrains the electromagnetic vibration. [ABSTRACT FROM AUTHOR]

    Abstract (Chinese): 为解决内置式永磁同步电机径向电磁力引起的电磁振动问题, 提出-种分段永磁体采用 Halbach 充磁方式同时转子 开设辅助槽的电机拓扑结构。 首先, 对电机气隙磁密, 径向电磁力, 电磁振动原理进行推导与分析, 并建立有限元模型。 其次, 提出基于电磁场和机械场耦合的电磁振动分析方案, 对电机径向电磁力进行时间空间阶次傅里叶分解, 在机械场中, 分析电 机定子在不同频率下的振动加速度幅值大小, 并计算出定子各阶模态。 在此基础上, 基于响应面法和多目标遗传算法构建电 机参数敏感度分层优化方案, 并求得样本点帕累托前沿从而确定电机最优参数, 将优化后的电机与普通 V 型内置式电机进行 比较。 最后, 在机械场中仿真得到转子所受等效应力和总变形, 验证得所提电机结构符合机械设计要求。 分析结果表明:所 提出结构电机在不损失电磁转矩的基础上, 径向电磁力幅值大幅度降低, 抑制了齿槽转矩, 改善了气隙磁密和反电势的正弦 度, 在提高电机电磁性能的同时抑制了电磁振动的发生. [ABSTRACT FROM AUTHOR]

    : Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

  6. 6
    دورية أكاديمية

    العنوان البديل: Adaptive energy management strategy for hydrogen fuel cell trams taking into account driving styles. (English)

    المؤلفون: 高锋阳, 强雅昕, 高智山, 徐昊, 史志龙

    المصدر: Journal of Railway Science & Engineering; Apr2024, Vol. 21 Issue 4, p1379-1390, 12p

    الملخص (بالإنجليزية): In semi-independent right-of-way operation mode, the driver’s driving style of a hydrogen fuel cell hybrid electric tram has a great impact on the vehicle’s operation economy by influencing the state of charge of the lithium battery. An adaptive energy management strategy combining drivers’ driving styles was proposed to improve the adaptability of the energy management strategy to working conditions and driving styles. First, considering the influence of different road conditions on drivers' driving styles, the K-means clustering algorithm was used to identify driving conditions, and driving conditions were divided into low-speed, medium-speed, and high-speed. The impact degree and the standard deviation of acceleration were introduced to construct the fuzzy logic algorithm to identify the driving style, and the driving style was divided into moderate, standard, and aggressive. Second, by taking the optimal instantaneous hydrogen consumption of the system as the objective function, under the premise of meeting the constraint conditions, the correction coefficient of the equivalent factor of the charged state of the lithium battery was introduced, and the corresponding equivalent factor in the traditional equivalent hydrogen consumption minimization strategy was adjusted according to different driving styles so as to realize the real-time change of the equivalent factor with the driving style. Finally, the proposed strategy was compared with the traditional Equivalent Consumption Minimization Strategy and Minimum Principle. The results show that the proposed strategy can achieve the optimal power distribution of the three power sources in the selected working conditions. Compared with the other two strategies, the charge state fluctuation curves of the lithium battery and supercapacitor are the smoothest. At the end of the driving range, the hydrogen consumption of the hybrid system is 1.39 kg, which has the best fuel economy. The maximum deviation rate of bus voltage is minimal, the three power sources are stable, and the system stability is strong. The research results provide a reference for further improving the driving adaptability of trams in actual operation. [ABSTRACT FROM AUTHOR]

    Abstract (Chinese): 半独立路权运行模式下,氢燃料电池混合动力有轨电车驾驶员的驾驶风格影响锂电池荷电状态,从而对整车运行 经济性有较大影响。提出一种结合驾驶员驾驶风格的自适应能量管理策略,以提高能量管理策略对工况和驾驶风格的适应 性。首先,考虑不同的道路工况对驾驶员驾驶风格的影响,通过K-均值聚类算法对行驶工况进行识别,将行驶工况分为低 速、中速、高速3类;引入冲击度和加速度标准差构建基于模糊逻辑的算法,对驾驶风格进行识别,将驾驶风格分为迟钝 型、标准型、激进型3类。其次,建立系统瞬时氢耗量最优的目标函数,在满足约束条件的前提下,引入锂电池荷电状态 等效因子修正系数,针对不同驾驶风格调整传统等效氢耗最小策略中相应的等效因子,以实现等效因子随驾驶风格的改变 实时变化。最后,将该策略与传统等效氢耗最小策略、庞特里亚金极小值策略进行仿真对比分析,结果表明:该策略能实 现3个动力源功率分配最优;锂电池和超级电容荷电状态波动曲线相较于其他2种策略最为平滑;在续驶里程结束时混合动 力系统氢耗量为1.39 kg,具有最为优越的燃油经济性;母线电压最大偏移率最小;能使3个动力源平稳出力,具有较强的 系统稳定性。研究结果为进一步提高有轨电车实际运行中对驾驶风格的适应性提供参考。 [ABSTRACT FROM AUTHOR]

    : Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

  7. 7
    دورية أكاديمية

    العنوان البديل: Review of clinical effects of disk-up sinus reamer(DSR)-based internal sinus floor elevation with implantation in 10 years. (English)

    المؤلفون: 张凯悦, 韩泽禹, 姜帅, 徐昊, 李凡, 赵保东

    المصدر: Shanghai Journal of Stomatology; Feb2024, Issue 1, p64-70, 7p

  8. 8
    رسالة جامعية
  9. 9
    دورية أكاديمية

    العنوان البديل: Identification of gardenia yellow plant dyes and their dyed silk fabrics. (English)

    المصدر: Advanced Textile Technology; Nov2023, Vol. 31 Issue 6, p1-8, 8p

    الملخص (بالإنجليزية): In recent years, with the improvement of people's awareness of environmental protection, ecological textiles have been increasingly favored by people. Because of their non-toxic, biodegradable and other characteristics, plant dyes are widely used to study the dyeing and printing of textiles. Dyeing and printing with plant dyes can not only reduce the harm of dyes to the human body and make full use of natural renewable resources, but also greatly reduce the toxicity of printing and dyeing wastewater, playing a role in protecting the environment indirectly. At present, the development and utilization of plant dyes is under the active exploration and research, and the plant dye demonstration system engineering has been launched officially. In order to fill the deficiency of the world plant dye standard system, and lay a solid foundation for China to lead the development of the global plant dye industry, it is necessary to establish the identification methods and standards of plant dye series of products. In order to ensure the quality of plant dyeing products on the market, crack down on fake and shoddy products, and standardize market operation, so that consumers can rest assured and buy satisfactory plant dyeing products, it is very important to identify the corresponding vegetable dyes and dyeing textiles. In order to identify plant dyes and their dyed textiles, this paper takes gardenia yellow plant dyes and dyed silk fabrics as the research objects. Firstly, the gardenia yellow plant dyes were tested by ultraviolet spectrophotometer, and the markers of gardenia yellow plant dyes were indentified by combining with the descriptions in the literature. Then the markers, gardenia yellow plant dyes and their dyed silk fabric extract were detected by using liquid mass combination instrument under negative ion mode. By comparing the retention time and mass spectrometry of the dyes, dyed silk fabric extract and the dyed silk fabric, whether the dye and fabric were gardenia yellow plant dye and its dyed silk fabric was determined. The results showed that crocin Ⅰ and crocin acid could be used as markers to distinguish gardenia yellow plant dyes and their dyed silk fabrics. The molecular ion peaks m/z=975.3472 and m/z=327.1553 were detected in the mass spectrum of gardenia yellow plant dyes, and the retention times were 0.61 min and 1.38 min, respectively. The molecular ion peaks m/z=975.396 and m/z=327.1489 were detected in the mass spectrum of dyed silk fabric extract, and the retention times were 0.61 min and 1.38 min, respectively. The retention times were similar to the peak time of the crocin Ⅰ standard substance (0.61 min) and crocin acid standard substance (1.36 min), and the deviations were within the allowable deviation range of ±2.5%. Therefore, it was determined that the dye and the dyed silk fabric are respectively the gardenia yellow plant dye and its dyed silk fabric. At present, many textile colleges and universities have established relatively complete database of vegetable dyes and comprehensive vegetable dye color cards. However, there are certain deficiencies in the relevant standards of plant dyeing in every link in the current market, and consumers have insufficient awareness of them and cannot verify the conformity of products. Therefore, identifying the corresponding plant dyes and their dyed fabrics is a priority in the development of plant dyeing. [ABSTRACT FROM AUTHOR]

    Abstract (Chinese): 栀子黄植物染料因色光靓丽、性能优良而被广泛应用于纺织品的染色印花,但目前市场上还没有规范的检测方法及标准对其进行鉴别;为填补植物染标准体系的缺失,现需要建立对栀子植物染系列产品的鉴别方法和标准。因此,文章通过紫外分光光度计对鉴别栀子黄植物染料的标志物进行了确定,并采用液质联用仪对栀子黄植物染料及其染色真丝面料上萃取的染料进行了鉴别。结果表明:藏红花素Ⅰ、藏红花酸可以作为鉴别栀子黄植物染料及其染色真丝面料的标志物。栀子黄植物染料的质谱中检测到分子离子峰 m/z=975.3472和 m/z=327.1553,保留时间分别为0.61 min和1.38 min;染色真丝面料萃取液的质谱中检测到分子离子峰 m/z=975.396和m/z=327.1489,保留时间分别为0.61 min和1.38 min;两者均与藏红花素Ⅰ标准品0.61 min和藏红花酸标准品1.36 min的出峰时间相近,在允许的±2.5%偏差范围内,由此可确定该染料和染色真丝面料为栀子黄植物染料及其染色真丝面料。 [ABSTRACT FROM AUTHOR]

    : Copyright of Advanced Textile Technology is the property of Zhejiang Sci-Tech University Magazines and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

  10. 10
    دورية أكاديمية

    العنوان البديل: OBSERVATION OF EMBRYONIC DEVELOPMENT OF THE ASIAN YELLOW POUND TURTLE (MAUREMYS MUTICA) BASED ON SHELLLESS INCUBATION. (English)

    المصدر: Journal of Hydrobiology; Nov2023, Vol. 47 Issue 11, p1869-1876, 8p

    الملخص (بالإنجليزية): Shellless hatching technology has been widely used in the field of bird artificial hatching, but it is rarely reported in reptiles. In this paper, the fertilized eggs of the Asian yellow pound turtle (Mauremys mutica) were used as the material, the embryo development of Mauremys mutica was observed in vivo and the whole process of embryo development was recorded. When the incubation temperature is (32±0.5)℃, the incubation period is 54d on average. Under the condition of shellless, without external water and oxygen, the embryos of Mauremys mutica can complete the whole process of development and successfully hatch young turtles. According to the morphological characteristics and time of embryonic development, the whole development process is divided into 19 stages. Stages 1--7 are based on the vascular plexus of the yolk sac, the shape and beating of the heart as staging criteria; and the main staging criteria for stages 8--19 are the head, limbs, back armor, color, and allantoic sac. This study demonstrates that the calcium source of the egg shell is not essential for embryonic development of turtles. The water content of the egg itself can meet the needs of the entire embryonic development process. Moreover, turtle embryos have extremely strong resistance to hypoxia. The successful application of shellless hatching technology in the observation of turtle embryo development shows that it has a broad potential application prospect. Shellless hatching technology is expected to become a new ideal experimental model. Based on the simple and convenient operation methods, turtle embryo models can be mass-produced for application in basic and applied scientific research fields. [ABSTRACT FROM AUTHOR]

    Abstract (Chinese): 文章以黄喉拟水龟(Mauremys mutica)受精卵为材料, 通过无壳孵化技术, 对黄喉拟水龟胚胎发育进行活 体观察, 并记录胚胎发育全过程。在孵化温度为(32±0.5)℃时, 孵化期平均为54d。在没有卵壳、没有外界水 分和氧气的情况下, 黄喉拟水龟胚胎能够完成发育全过程并成功孵出稚龟。根据胚胎发育的形态特征、时间 将整个发育过程划分为1--19期。1--7期以卵黄囊血管丛、心脏形态与跳动作为分期依据; 而8--19期主要以 头部、四肢、背甲、颜色和尿囊等作为分期依据。无壳孵化技术在龟类胚胎发育观察中的成功应用, 显示其 有广泛的潜在应用前景. [ABSTRACT FROM AUTHOR]

    : Copyright of Journal of Hydrobiology is the property of Editorial Department of Journal of Hydrobiology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)