The Effect of Varied Dietary Crude Protein Levels with Balanced Amino Acids on Performance and Egg Quality Characteristics of Layers at First Laying Phase

Four diets were formulated to study the influence of varying crude protein levels on the performance, egg quality, serum and haematological characteristics at the first phase of laying cycle of sixty Bovan Nera laying birds that were randomly allotted to dietary treatments. The four experimental diets had five replicates each and three birds per repli-cate. Diet 1 contained 14% crude protein (CP), while diet 2 contained 15% CP, diets 3 and 4 contained 16% and 17% CP respectively. The experimental birds were fed for 10 weeks and the data collected were statistically analysed. Apparent variations recorded for all the performance characteristics such as Egg number, Hen-day production, Feed Conversion Ratio (FCR) and weight gain were significantly different (p < 0.05). The best FCR value were recorded by birds fed 17% CP (3.45), while the highest weight gain mean value were also recorded by birds fed 17% CP value. Findings indicated a direct relationship between dietary crude protein values and performance.

Effects of Different Dietary Energy and Protein Levels on Meat Performance and Meat Quality of Jinghai Yellow Chickens

To investigate the effect of different dietary energy and protein levels on meat performance and meat quality of Jinghai yellow chickens, 480 43-day old Jinghai yellow chickens with similar weight were randomly divided into four experimental groups： experimental group 1 （protein 15%, metabolic energy 9.95 MJ/kg）, experimental group 2 （protein 16%, metabolic energy 10.95 MJ/kg）, experimental group 3 （protein 17%, metabolic energy 12.65 MJ/kg） and experimental group 4 （ protein 18%, metabolic energy 13.95 MJ/kg）, respectively. All chickens were slaughtered at 112-day old. The breast and leg muscles of Jinghai yellow chickens were collected, to determine the slaughter performance, conventional meat quality and muscle chemical indicators. The results indicated that dressing-out percentage and eviscerated yield percentage in four experimental groups were above 87.27% and 67.00%, respectively; other slaughter performance indicators exhibited no significant differences among various groups （P 〉 0.05 ） ; breast muscle color of hens in experimental group 4 varied significantly from that in other three groups （ P 〈 0.05 ） ; leg muscle color of hens in experimental group 2 varied extremely significantly from that in other three groups （ P 〈 0.01 ） ; water-holding capacity of breast muscles of hens in experimental group 3 was significantly higher than that in experimental group 4 （P 〈 0.05 ） ; thiamine content of breast muscles of cocks in experimental group 3 was significandy higher than that in experimental group 2 （ P 〈 0.05 ） ; however, other properties exhibited no significant differenees among various groups （P 〉 0.05 ）.

Fragility Curves of Existing RC Buildings Based on Specific Structural Performance Levels

In seismic risk mitigation policies, fragility functions of existing buildings play a fundamental role. In this paper, a procedure to develop analytical fragility curves for Moment Resisting Frame Reinforced Concrete buildings is presented. The design of the selected building typologies was performed according to the codes at the time of construction using force-based methods and the state of the practice at the time of construction. A total of 216 building classes were defined, considering different ages, number of storeys, infill panels, plan dimensions, beam stiffness, and concrete strength. The investigated buildings can be considered low-engineered buildings, using no seismic codes or old seismic codes. The seismic capacity of the selected models representing the existing RC buildings has been evaluated through non-linear dynamic simulations. Seismic response has been analyzed, considering various peak and integral intensity measures and various response parameters, such as ductility demands and Interstorey Drift Ratio (IDR). A new relationship among structural performance, damage levels and interstorey drift ratios for each studied type is introduced, which is calibrated using the damage levels described in EMS98. It is important to highlight that in this study, different thresholds of IDR have been associated with different typologies, considering their different ductility member levels after their different structural responses. Fragility Curves (FCs) for the studied structural types are set up, developed and discussed.

Limb symmetry index in competitive alpine ski racers:Reference values and injury risk identification according to age-related performance levels

Purpose: The aims of this study were to assess differences of limb symmetry index(LSI) in strength-and coordination-related tasks between high-level, competitive, noninjured ski racers of different age-related performance levels and to prospectively assess limb differences as a possible risk factor for traumatic and overuse injury in youth ski racers.Methods: The study(Study 1) included 285 high-level competitive ski racers(125 females, 160 males) of 3 age-related performance levels and based on the school system: 95 youth(10à14 years, secondary modern school), 107 adolescent(15à19 years, grammar school), and 83 elite athletes(20à34 years). To investigate the second aim(Study 2), 67 of the 95 youth athletes were included and any traumatic or overuse injuries were prospectively recorded over 2 seasons. All athletes performed 4 unilateral tests(strength related: one-leg counter movement jump(OL-CMJ) and one-leg isometric/isokinetic press strength test(OL-ILS); coordination related: one-leg stability test(OL-ST) and one-leg speedy jump test(OL-SJ)). The LSI was calculated by dividing the dominant leg by the nondominant leg and multiplying by 100. Kruskal-Wallis H tests and binary logistic regression analyses were conducted.Results: There were significant differences between the LSI of the 3 age-related performance-level groups only in the strength-related tests: the OL-CMJ(x2(2, 285) = 9.09; p = 0.01) and the OL-ILS(x2(2, 285) = 14.79; p < 0.01). The LSI for OL-ILS was found to be a significant risk factor for traumatic injury in youth ski racers(Wald = 7.08; p < 0.01). No significant risk factors were found for overuse injuries.Conclusion: Younger athletes display slightly greater LSI values only in the strength-related tests. The cut-off value of limb differences of <10%for return to sport decisions seems to be appropriate for elite athletes, but for youth and adolescent athletes it has to be critically discussed. It seems to be necessary to define thresholds based on specific performance tasks(strength vs. coordination related) rather than on generalizations,and age-related performance levels must be considered. Limb differences in unilateral leg extension strength represent a significant injury risk factor in youth ski racers.

Effects of Crude Protein Level of Concentrate Supplement on Production Performance and Serum Biochemical Parameters in Post-fattening Hainan Yellow Cattle

[Objective]The paper was to investigate the effects of crude protein level of concentrate supplement on production performance and serum biochemical parameters of post-fattening Hainan Yellow Cattle.[Method]Twelve Hainan Yellow Cattles with the same genetic backgrounds and similar initial weight of(168.13±0.55)kg were randomly divided into three treatments.Cattle were fed with concentrate supplement containing different levels of crude protein.The trial lasted 60 d.[Result]The daily gain of 17.56%crude protein group was significantly higher than those of 15.55%and 13.56%crude protein groups(P<0.05),and the gross profit of 17.56%crude protein group was markedly higher than that of 13.56%crude protein group(P<0.05),but the feed gain ratio of 17.56%crude protein group was significantly lower than that of 13.56%crude protein group(P<0.05).Compared with 15.55%and 13.56%crude protein groups,the serum total protein content markedly increased(P<0.05),but the urea nitrogen level significantly decreased(P<0.05).[Conclusion]When crude protein level of concentrate supplement was 17.56%,post-fattening Hainan Yellow Cattle could obtain better production performance.

Loon Nest Viability Model: A Performance Indicator for Improving Water-Level Regulation of Large Water Bodies

Rule curves dictating target water levels for management have been implemented in several water bodies in North America over the last 70 years or more. Anthropogenic alterations of water levels are known to affect several components of wetland ecosystems. Evaluating the influence of rule curves on biological components with simple performance indicators could help harmonize water level management with wetland integrity. We assessed the potential of using the probability of common loon nest viability as a performance indicator of long-term impacts of rule curves on nesting wetland birds. We analyzed the outcome of rule curves on the probability of loon nest viability in Rainy Lake and Namakan Reservoir, 2 regulated water bodies located along the Ontario-Minnesota border. The analysis was focused on 4 hydrological time series between 1950 and 2013: 2 sets of time series simulating rule curves used to manage the water bodies in the past decades (referred to as the 1970RC and 2000RC), one of the historical measured water levels, and one of computed natural water levels. The probability of loon nest viability under the 1970RC was 2× higher than under natural conditions in both water bodies. The probability was also 2× higher under the 2000RC than under the 1970RC in the Namakan Reservoir but not in Rainy Lake. The rule curves generally improved conditions for nesting loons in both water bodies. The presented performance indicator can be used to evaluate future rule curves before they are implemented in the Rainy-Namakan or other similar systems.

The Relationship Between Cross-Cultural Conflict Management Levels and Employee Organizational Performance in Cross-Border E-Commerce Corporations in China

This research focuses on the cross-cultural conflict management of cross-border e-commerce corporations in companies on employee organizational performance under conflict management such as power distance conflict,individualism,long-term orientation,indulgence and avoidance of uncertainty as the independent variables and employee organizational performance such as quality,efficiency,and profitability of organizational tasks as the dependent variable.With the advancement of China’s reform and opening up and the implementation of the“One Belt,One Road”strategy,the globalized economy has penetrated into various countries and regions.China trade exchanges with other countries have become more frequent,and have also set up branch factories and branches abroad.However,there are certain differences between the branch company and the domestic culture in the actual operation process.If the cross-border e-commerce corporations cannot handle these contradictions and differences well,the company may face difficulties such as cultural conflicts.For this reason,this paper makes a deep analysis of this,taking the cross-border e-commerce corporations in Guangxi as an example,and points out the problems existing in cross-cultural management in this region and putting forward personal opinions and solutions to related problems,and putting forward feasible solutions,enhances the understanding of involving conceptualizations of cross-cultural communication conflict and its management in the frame of cross-cultural conflicts management theory and provides references for the formulation of cultural conflict management measures for cross-border e-commerce corporations.So that enterprises can gain a firm foothold in the international market competition,enrich and enhance their soft power,and enhance their international status in the development of multinational regions.The result of this research will not only answer existing research questions,but also introduce new ideas and new questions for future research.

System-Level Performance Evaluation of Very High Complexity Media Applications : A H264/AVC Encoder Case Study

Given the substantially increasing complexity of embedded systems, the use of relatively detailed clock cycle-accurate simulators for the design-space exploration is impractical in the early design stages. Raising the abstraction level is nowadays widely seen as a solution to bridge the gap between the increasing system complexity and the low design productivity. For this, several system-level design tools and methodologies have been introduced to efficiently explore the design space of heterogeneous signal processing systems. In this paper, we demonstrate the effectiveness and the flexibility of the Sesame/Artemis system-level modeling and simulation methodology for efficient peformance evaluation and rapid architectural exploration of the increasing complexity heterogeneous embedded media systems. For this purpose, we have selected a system level design of a very high complexity media application;a H.264/AVC (Advanced Video Codec) video encoder. The encoding performances will be evaluated using system-level simulations targeting multiple heterogeneous multiprocessors platforms.

Performance prediction of expressway pavement in high maintenance level areas based on cosine deterioration equation: A case study of Zhejiang Province in China

Accurate prediction of performance decay law is an important basis for long-term planning of maintenance strategy.The statistical regression prediction model is the most widely employed method to calculate pavement performance due to its advantages such as the small amount of calculation and good accuracy,but the traditional prediction model seems not applicable to the high maintenance level areas with excellent pavement conditions.In this paper,the service life and the cumulative number of the axle load were determined as the independent variables of prediction models of pavement performance.The pavement condition index(PCI)and rutting depth index(RDI)were selected as maintenance decision control indexes to establish the unified prediction model of PCI and RDI respectively by applying the cosine deterioration equation.Results reveal that the deterioration law of PCI presents an anti-S type or concave type and the deterioration law of RDI shows an obvious concave type.The prediction model proposed in this study added the pavement maintenance standard factor d,which brings the model parameterα(reflecting the road life)and the deterioration equations are more applicable than the traditional standard equations.It is found that the fitting effects of PCI and RDI prediction models with different traffic grades are relatively similar to the actual service state of the pavements.

不同粗蛋白质水平对白王种鸽繁殖性能和乳鸽生长性能的影响

试验旨在探究“2+2”生产模式下不同粗蛋白质水平对白王种鸽繁殖性能和乳鸽生长性能的影响。试验选取产蛋性能相近的300日龄健康种鸽168对,随机分为4组,每组7个重复,每个重复6对种鸽,每对种鸽哺育2只乳鸽。试验Ⅰ组、Ⅱ组、Ⅲ组和Ⅳ组分别饲喂粗蛋白质水平为13.43%、15.04%、16.64%和18.25%的饲粮。试验期46 d,其中孵化期18 d (1~18 d),哺乳期28 d (19~46 d)。结果显示,试验Ⅱ组、Ⅲ组产蛋间隔显著低于试验Ⅰ组(P<0.05),试验Ⅲ组种蛋受精率显著高于试验Ⅰ组、Ⅳ组(P<0.05),试验Ⅲ组入孵蛋孵化率极显著高于试验Ⅰ组、Ⅱ组、Ⅳ组(P<0.01)。试验Ⅲ组乳鸽28日龄体重显著高于试验Ⅰ组(P<0.05),乳鸽屠宰率极显著高于试验Ⅰ组(P<0.01),乳鸽胸肌率显著高于试验Ⅰ组、Ⅱ组、Ⅳ组(P<0.05)。试验Ⅱ组、Ⅲ组、Ⅳ组窝料重比1极显著低于试验Ⅰ组(P<0.01)。研究表明,不同粗蛋白质水平影响了种鸽的繁殖性能、乳鸽的生长性能以及窝料重比,在“2+2”生产模式下,建议白王种鸽饲粮适宜粗蛋白质水平为16.64%。

The Accuracy Levels of Vehicle Detectors Commonly Used in Korea Based on the Results of Quality Certification Test

The Ministry of Land, Infrastructure and Transport of Korea introduced the ITS system performance evaluation about six and a half years ago. The main purpose is to make sure that accurate and reliable real-time traffic data are collected from the ITS system installed. There are three types of performance evaluations, which are Quality Certification Test, Pre-Delivery Test and Periodic Check in Operation. In this paper the accuracy levels of vehicle detectors commonly used in Korea are analyzed based on the results of quality certification tests conducted during 2008-2012. The test items consist of volume, speed and occupancy. The analysis shows that loop detectors have the best levels of accuracy in all three test items and their levels of accuracy have been steady. Video image detectors do not have so good levels of accuracy as loop detectors, but the levels of accuracy have improved as time passes. Radar detectors do not have good levels of accuracy. However, their levels of accuracy have improved as time passes. The last vehicle detectors, geomagnetism detectors have the worst accuracy in the occupancy item.

研究生自主学习、交际沟通能力与学业表现的影响研究

硕士研究生阶段十分强调学生的自主学习,要求学习者保持积极的学习心态,做到学习自律,以达到预期的学习目标。然而,硕士研究生的学习意愿、学习自律容易受到各种因素的影响。该文主要研究硕士研究生交际沟通能力、自主学习共同对学业的影响。研究发现,硕士研究生的交际沟通能力对自主学习具有促进作用,强化硕士研究生的努力程度,进而提升学业成就,特别是在学习团队中发挥重要作用。此外,研究还发现,研究生参与社会实践有助于强化自主学习意愿。因此,研究生教育应当培养学生的交际沟通能力、增加学生社会实践和优化研究生学业评价,从而提高研究生教育的质量。

高水平专业群建设产出绩效评价指标体系构建研究

高水平专业群建设绩效评价既是衡量“双高”建设成效的必然要求,也是促进高职院校内涵式发展的迫切需要,还是下一轮双高计划建设单位遴选的重要举措。依据教育部和财政部相关文件,提出了高水平专业群建设绩效评价体系框架。在对产出指标选用原则分析的基础上,选出了9个二级指标下的备选三级指标;运用DEMATEL分析法,对备选三级指标进行优化,确定了产出指标下的评价体系和权重。通过高水平专业群建设绩效评价体系的构建,引导专业群建设方向始终指向“双高计划”总体目标,有效提升专业群的人才培养质量与服务能力。

数字化转型能否促进企业绿色创新绩效的提高?——基于我国A股上市公司数据

以2016—2021年沪深两市A股上市公司的数据作为研究样本,运用固定效应面板模型就数字化转型对企业绿色创新绩效的影响进行实证分析,同时探究融资约束的中介效应及风险承担水平、政府补助的调节作用。研究发现:数字化转型能显著促进企业绿色创新绩效的提高,且该作用在国有企业、非重污染企业及市场化程度较低的企业中更明显。进一步分析发现:融资约束在数字化转型对企业绿色创新绩效影响的过程中发挥了部分中介作用;风险承担水平和政府补助均发挥了正向调节作用。因此,企业层面应积极进行数字化转型,通过缓解融资约束来促进绿色创新绩效的提高,并积极发挥风险承担水平和政府补助的调节作用;政府层面应完善补助政策,推动企业绿色创新绩效的持续提高。

不同性能水平下600 MPa级高强钢筋混凝土柱位移角限值研究

基于性能抗震设计思想的600 MPa级高强钢筋混凝土柱位移角限值研究,对于推广高强钢筋混凝土柱的应用至关重要。通过17根HTRB630高强钢筋混凝土柱试件和3根HRB400钢筋混凝土柱试件的拟静力试验研究了其抗震性能。与HRB400钢筋混凝土柱相比,HTRB630高强钢筋混凝土柱的滞回曲线的形状没有发生明显改变,试件具有较好的承载能力和延性。将基于Kunnath损伤模型计算的损伤指数与试验中测量的损伤指数范围进行了比较,结果表明,Kunnath损伤模型可以准确计算HTRB630高强钢筋混凝土柱的损伤指标。根据HTRB630高强钢筋混凝土柱的破坏特点,以屈服点、峰值点和极限点作为高强钢筋混凝土柱的性能水平控制点。基于性能抗震设计的思想,将600 MPa级高强钢筋混凝土柱的性能水平划分为5个性能水平,即正常使用、暂时使用、修复后使用、生命安全和接近倒塌性能水平。结合参考文献中600 MPa级高强钢筋混凝土柱的试验数据,对65个600 MPa级高强钢筋混凝土柱各特征点的位移角进行了相对频率统计分析,得到了600 MPa级高强钢筋混凝土柱在暂时使用、修复后使用和接近倒塌3个性能水平下具有超过90%安全保证率的位移角限值分别为1/150、1/80和1/60。

基于智能文本挖掘的技术水平预测研究——以声呐技术为例

[目的/意义]从开源文献中挖掘关于未来技术水平预测的观点信息,为我国前瞻预判科技风险、吸收利用国外技术专家智慧提供支撑。[方法/过程]设计“未来时间戳”词典,结合该词典和技术领域关键词,制定包含未来技术水平预测信息的文献检索策略。利用搜索引擎和学术文献检索平台获取文献全文,或批量下载文献关键字段信息(标题、摘要、关键词等)。利用模式匹配方法和“技术性能三元组”智能文本挖掘软件,从文献中抽取“未来时间戳”+“技术性能三元组”,并对不同国家、机构的预测结果进行总结归纳。[结果/结论]经过开展声呐技术领域未来技术水平预测实证分析,认为基于文本智能挖掘方法开展技术水平预测是可行的,且相对于趋势外推法、专家咨询法等具有结论权威、可靠、能够利用竞争对手国家专家智慧等优势。[局限]受限于文献全文的可获得性等因素,人工判读工作仍必不可少;在此基础上还可以进一步开展中外未来技术水平对比、技术威胁识别等研究工作。

四川大学华西医院四位一体中层干部考核体系构建实践

目的:综合运用多种考核方法构建平时考核、年度考核、专项考核、任期考核四位一体的适宜公立医院高质量发展的中层干部考核体系。方法:通过改良专家咨询法,结合工作实际,确定不同维度中层干部的考核指标及权重赋值。结果:以团队业绩体现干部个人业绩,实绩量化建立中层干部四位一体的考核体系。咨询专家对一级指标的重要性、合理性、可测量性、可考核性评分和认可度均较高。结论:统筹兼顾、综合运用各类考核评价,使其相互补充、相互印证,可增强考核体系的完整性和系统性。科学合理、客观公正的干部考核体系有利于培育一支忠诚、干净、担当的高素质专业化干部队伍。

饲粮纤维水平对肉鸡生长性能、血清生化、免疫器官及小肠发育的影响

为研究饲粮纤维(玉米酒糟粕、米糠、麸皮等比例混合物)对肉鸡生长性能、血清生化指标、免疫器官指数及小肠发育的影响,选取1日龄罗斯308肉用仔鸡480只,随机分为4组,对照组饲喂基础日粮,试验组分别在基础日粮基础上添加不同水平(3.0%、4.5%、6.0%)的饲粮纤维,饲养42 d。结果表明:1)与对照组相比,添加饲粮纤维降低肉鸡1~21日龄体重、平均日增重、平均日采食量(P<0.05),但6.0%纤维组提高了肉鸡42日龄体重和22~42日龄平均日增重,并降低了22~42日龄和1~42日龄的料重比(P<0.05)。2)不同水平纤维饲粮均显著提高了血清中白蛋白水平(P<0.05),与对照组相比,3.0%、6.0%纤维组血清甘油三酯和总蛋白水平在21日龄时显著升高(P<0.05),但42日龄时显著降低(P<0.05)。3)21日龄时,4.5%纤维组脾脏指数显著高于其他各组(P<0.05),42日龄时6.0%纤维组法氏囊指数显著低于对照和4.5%纤维组(P<0.05)。4)3%纤维组显著降低了肉鸡21日龄回肠绒隐比和42日龄十二指肠隐窝深度(P<0.05),提高了42日龄十二指肠绒隐比(P<0.05);6.0%纤维组显著提高了21日龄和42日龄空肠绒毛高度以及21日龄回肠绒毛高度(P<0.05),4.5%纤维组显著降低了21日龄空肠隐窝深度(P<0.05)。综上,6.0%饲粮纤维可提高肉鸡生长性能,降低血清胆固醇、甘油三酯水平,并促进小肠发育。

肥猪散对育肥猪生长性能、血清生化指标、抗氧化水平和生长激素水平的影响

为了解肥猪散对育肥猪生长性能、血清生化指标、抗氧化水平和生长激素水平的影响,试验选取160头体重相近的育肥猪,随机分为4组,对照组饲喂基础饲粮,试验1、2、3组分别在饲粮中添加1%、2%、4%肥猪散,试验期35 d。试验期间对育肥猪的生长情况进行测定和记录,检测第0、35天的血清生化指标、抗氧化水平和生长激素水平。结果显示:与对照组相比,试验1、2、3组增重和平均日增重极显著增加(P<0.01),试验2、3组平均日采食量显著增加(P<0.05),各组间的料重比差异不显著(P>0.05);使用肥猪散35 d后,试验1、2、3组血清尿素氮含量显著降低(P<0.05),葡萄糖含量极显著升高(P<0.01),超氧化物歧化酶活性有上升的趋势(0.05<P<0.10),皮质醇含量显著降低(P<0.05)。综上,育肥猪饲料中添加肥猪散具有提高生长性能,改善血清生化指标,提高抗氧化水平和生长激素水平的作用,推荐添加剂量为2%。