不要争竞追求与人和睦

争竞嫉妒是神所禁止的,基督的国乃是公义和平之国。他名称为和平的君,“以公平公义使国坚定稳固,从今直到永远。”(赛9:7)主耶稣曾经宣告:“使人和睦的人有福了,因为他们必称为上帝的儿子。”(太5:9)多么尊贵的称呼!信心之父亚伯拉罕的儿子以撒正具这样的美德,是我们后人效法的榜样。

讴声引尾与剧种流派——“花雅争竞”背景中的河南梆子演剧艺术

清代乾隆、嘉庆年间,"花部"与"雅部"戏曲声腔相互较量、争胜求存,史称"花雅之争"。在"花雅争竞"的艺术氛围催生下,河南梆子以"梆罗卷"的草台演剧艺术形式悄然滋生,至清朝末年,在曾经与之同台演唱的罗戏、卷戏等剧种走向衰落以致消亡的时候,河南梆子戏却以旺盛的生命力崛起于民间,以"祀神"之面貌出现,而行"娱人"之能事,依靠节庆庙会而繁衍、生存,凸现出鲜明的广场艺术的特征,昂首步入艺术的青春期。本文拟从班社、名角、用嗓、传承和流派等方面论述其演唱艺术特征。

Live-streaming selling strategies for competitive firms

The booming live-streaming commerce has significantly changed the traditional e-commerce model,thus attracting much attention from both industry and academia.In recent years,an increasing number of scholars have applied analytical models to explore live-streaming strategies for firms in different scenarios.However,the previous literature mainly considers monopolists,while in the real world,competition is not rare.To fill this gap between the literature and practical observations,this paper applies a game theoretical model to study live-streaming adoption and pricing strategy for firms under competitive environments.The results show that,for competitive firms,the equilibrium strategy depends on the relation between the commission rate and the intensity of the market expansion effect.Additionally,compared to the case in which no firm adopts live-streaming,competitive firms do not always benefit from the adoption of live-streaming selling.The paper also shows that competition plays a negative role in inducing a firm to adopt live-streaming.

Optimal Control for Age Distribution and Weighted Size Competitive Species in a Polluted Environment

In the paper,we study an optimal control for a system representing a competitive species model with fertility and mortality depending on a weighted size in a polluted environment.A fixed point theorem is applied to obtain the existence and uniqueness exhibited by a non-negative solution of above mentioned model.A maximum principle helps to carefully verify the existence of the optimal control policy,and tangent-normal cone techniques help to obtain the optimal condition specific to control issue.

Enhancing selectivity in acidic CO_(2)electrolysis:Cation effects and catalyst innovation

The electrochemical reduction of CO_(2)(eCO_(2)R)under ambient conditions is crucial for reducing carbon emissions and achieving carbon neutrality.Despite progress with alkaline and neutral elec-trolytes,their efficiency is limited by(bi)carbonates formation.Acidic media have emerged as a solution,addressing the(bi)carbonates challenge but introducing the issue of the hydrogen evolu-tion reaction(HER),which reduces CO_(2)conversion efficiency in acidic environments.This review focuses on enhancing the selectivity of acidic CO_(2)electrolysis.It commences with an overview of the latest advancements in acidic CO_(2)electrolysis,focusing on product selectivity and electrocatalytic activity enhancements.It then delves into the critical factors shaping selectivity in acidic CO_(2)elec-trolysis,with a special emphasis on the influence of cations and catalyst design.Finally,the research challenges and personal perspectives of acidic CO_(2)electrolysis are suggested.

从“蕉下客”视角看探春

从道家“蕉鹿难求”观点看，探春不能真妄两忘，得失两忘，痴迷于主奴、嫡庶、义利、兴衰、治乱上的争竞，志大才高，然值未世，有功无运，不能回天。

试论汉乐府中的生命态度

死亡是个体存在的必然归宿。汉乐府中充盈着对死亡的冥索与反思。人们面对死亡,分别采取了争竞人世、服食求仙、放情游乐的人生态度。它们的特点分别是战胜死亡焦虑,推迟死期和忘却死亡。这些不同的人生态度有一个共同的核心,都是对人生真谛的思索和内在人格的追求,是对生命强烈的欲求与留恋。

中西体育赛会的文化比较——以古中国射礼赛会与古希腊奥林匹克赛会为例

以射礼赛会和奥林匹克赛会为代表的中西体育赛会,均是各自文明中重要的社会活动。对其比较发现:中西体育赛会均有社会秩序教化意义,开展场所均是学校的雏形;参赛人员均有道德层面的要求,体现社会秩序教化和个人德性教化的价值。认为:在古中国射礼赛会的"君子之争"中,强调"反求诸己",创造出内省式"以德引争"的文化价值;古希腊文化侧重自由人的平等有序,突出"自我超越",创造出外扬式"以争竞荣"的文化价值;两者具有互补的当代意义和文化价值。

Tree shrew models:A chronic social defeat model of depression and a one-trial captive conditioning model of learning and memory

Recent genome studies indicate that tree shrew is in the order or a closest sister of primates,and thus may be one of the best animals to model human diseases.In this paper,we report on a social defeat model of depression in tree shrew（Tupaia belangeri chinensis）.Two male tree shrews were housed in a pair-cage consisting of two independent cages separated by a wire mesh partition with a door connecting the two cages.After one week adaptation,the connecting door was opened and a brief fighting occurs between the two male tree shrews and this social conflict session consisted of 1 h direct conflict（fighting） and 23 h indirect influence（e.g.smell,visual cues） per day for 21 days.The defeated tree shrew was considered the subordinate.Compared with na？ve animals,subordinate tree shrews at the final week of social conflict session showed alterations in body weight,locomotion,avoidance behavior and urinary cortisol levels.Remarkably,these alterations persisted for over two weeks.We also report on a novel captive conditioning model of learning and memory in tree shrew.An automatic trapping cage was placed in a small closed room with a freely-moving tree shrew.For the first four trials,the tree shrew was not trapped when it entered the cage and ate the bait apple,but it was trapped and kept in the cage for 1 h on the fifth trial.Latency was defined as the time between release of the tree shrew and when it entered the captive cage.Latencies during the five trials indicated adaptation.A test trial 24 h later was used to measure whether the one-trial trapping during the fifth trial could form captive memory.Tree shrews showed much longer trapping latencies in the test trial than the adaptation trials.The N-methyl-d-aspartate（NMDA） receptor antagonist MK-801（0.2 mg/kg,i.p.）,known to prevent the formation of memory,did not affect latencies in the adaptation trails,but did block captive memory as it led to much shorter trapping latencies compared to saline treatment in the test trial.These results demonstrate a chronic social defeat model of depression and a novel one-trial captive conditioning model for learning and memory in tree shrews,which are important for mechanism studies of depression,learning,memory,and preclinical evaluation for new antidepressants.

Reliability assessment considering dependent competing failure process and shifting-threshold

The reliability assessment problem for products subject to degradation and random shocks is investigated. Two kinds of probabilistic models are constructed, in which the dependent competing failure process is considered. First, based on the assumption of cumulative shock, the probabilistic models for hard failure and soft failure are built respectively. On this basis, the dependent competing failure model involving degradation and shock processes is established. Furthermore, the situation of the shifting-threshold is also considered, in which the hard failure threshold value decreases to a lower level after the arrival of a certain number of shocks. A case study of fatigue crack growth is given to illustrate the proposed models. Numerical results show that shock has a significant effect on the failure process; meanwhile, the effect will be magnified when the value of the hard threshold shifts to a lower level.

Depression effect of pseudo glycolythiourea acid in flotation separation of copper-molybdenum

Pseudo glycolythiourea acid（PGA） was synthesized and used as depressant for flotation separation of Cu and Mo.The results indicate that a low amount of PGA has strong depression effect on chalcopyrite.Mo grade of 26.17% and recovery of 89.83% were achieved with rougher and scavenger one time and cleaners twice,while the recovery of Mo was deceased by 2% when Na2S was used as depressant.Measurement on adsorption of PGA on the mineral surface indicates that PGA and xanthate were adsorbed on mineral surface by competition,and PGA was adsorbed on chalcopyrite surface much stronger than on molybdenite surface.FTIR results indicate a chemical absorption process for PGA on chalcopyrite surface and a physical adsorption process on molybdenite surface.The frontier orbital calculation shows that the S atom is an active center,and the depression of PGA can be explained with the Fermi level of energy based on the electrochemical mechanism.

Status quo and Enhancement of Competitiveness of Cut Flower Industry in China

The research reviewed status quo and problems of China＇s cut flowers and proposed countermeasures and suggestions in improving its competitiveness in order to provide theoretical references for its development.

Competitive Strategies of Two Species of Co-occuring Tadpoles

We examined the competitive ability of larval toads （Bufo gargarizans ） and frogs （Rana kukunoris ） which co-occur in natural pools in the Jiuzhaigou Nature Reserve. We measured the activity level, growth rate, mass at metamorphosis and larval period in a laboratory experiment. Tadpoles of B. gargarizans were significantly more active when food was abundant than scarce, while there was no significant difference in the activity of R. kukunoris tadpoles at different food levels. At low food availability, mass at metamorphosis and growth rate of R. kukunoris were significantly increased in the presence of B. gargarizans, whereas the presence of R. kukunoris had no significant effect on the mass and growth rate of B. gargarizans. In all treatments, the larval period of B. gargarizans at low food availability was the shortest. These results suggest that B. gargarizans can adapt to different food levels by changing their activity rate. At high food level, B. gargarizans increased activity to gain more food. At low food level, B. gargarizans decreased activity and achieved early metamorphosis. However, when food resources were limited, R. kukunoris could gain more food than B.gargarizans .

Test of Resource Competition Theory Between Microalga and Macroalga Under Phosphate Limitation

Short_term batch cultures were used to measure the phosphate_dependent growth kinetics for a marine microalga, Tetraselmis subcordiformis (Wille) Hazen, and a marine macroalga, Ulva pertusa Kjellm. Results were fitted to the Monod model. U. pertusa had a lower half_saturation constant and maximum growth rate, which were 0.016 μmol/L and 0.16 d -1 respectively, while the growth kinetics of T. subcordiformis were 0.021 μmol/L and 0.83 d -1 . Long_term semicontinuous nutrient competition experiments were performed between T. subcordiformis and U. pertusa under phosphate limitation in laboratory. Loss rates were manipulated to get the same or different resource requirement values ( R * ) of the two species. Comparison between the theoretical predictions derived from Monod kinetics and the outcome of competition experiments indicated that the Monod model could predict the results only when the R * values of the two species were significantly different, and T. subcordiformis displaced U. pertusa when they had the same resource requirements. The Monod model can only partly predict the competition results between microalga and macroalga.

亲和短肽用于快速检测转基因蛋白Cry3Bb

本研究利用竞争洗脱法淘选与Cry3Bb毒素具有亲和力的特异性短肽,以此建立间接竞争酶联免疫吸附检测方法(IC-ELISA)。经过4轮淘选、富集,获得与靶蛋白具有较高亲和力的B10克隆(ACIHSPTALCGGG)。所建立的检测方法稳定性较好,变异系数在5%以内;线性检测范围为0.03~29.95μg/ml,线性回归方程为(Y=20.044x+50.407,R2=0.983 4),检测限为0.009 6μg/ml,在玉米样品中提取回收率为92.26%~101.22%。本研究所建立的ELISA检测方法为粮食中Cry3Bb蛋白的定量检测提供了有效的手段,在转基因产品的检验检疫中有较高的应用价值。

β-伴大豆球蛋白间接竞争ELISA检测方法建立

β-伴大豆球蛋白是引起过敏现象发生的主要大豆蛋白过敏原之一，建立β-伴大豆球蛋白过敏原的检测为研究大豆中过敏原降低程度奠定了良好的基础。采用自制的兔抗β-伴大豆球蛋白多克隆抗体，并以标准β-伴大豆球蛋白为抗原、辣根过氧化物酶标记的羊抗兔IgG为酶标二抗，建立了定量检测β-伴大豆球蛋白的间接竞争ELISA方法。并对该方法进行了条件优化及精密度的测定。结果为：抗原包被浓度为0.3μg/mL，一抗最佳稀释度为1∶3200，酶标二抗稀释度为1∶10000；板内误差2.19%，板间误差9.61%。回归直线方程为y=-2.4392x-1.8718，相关系数R2=0.9957，其检测的线性范围为0.1~2μg/mL。表明所建方法具有一定的重复性和灵敏度，可用于大豆制品过敏原的检测。

Effects of Interspecific Competition on the Population Dynamics of Four Stored Grain Insect Pests

The effects of interspecific competition on the population dynamics of four insect grain Insecp pests （ Sitophilus zeamais, Rhizopertha dominica, Tribolium castaneum and Cryptolestes ferrugineus ） was studied at 30℃, 75% relative humidity. A regression analysis of the population dynamics was conducted. The results showed that population growth of S. zeamais , R. dominica, T. castaneum and C. ferrugineus was restrained under mixed rearing. Population growth of T. castaneum and C. ferrugineus was remarkably accelerated when they coexisted with S. zeamais or R. dominica, while that of S. zeamais and R. dominica was restrained to some extent. Regression analysis results showed that the population growth potential of S. zeamais was the largest and that of C. ferrugineus was the smallest, and the changing trends of population growth rates were not distinct.

System reliability assessment based on Wiener process and competing failure analysis

Considering the dependence and competitive relation-ship between traumatic failure and degradation,the reliability assessment of products based on competing failure analysis is studied.The hazard rate of traumatic failure is regarded as a Weibull distribution of the degradation performance,and the Wiener process is used to describe the degradation process.The parameters are estimated with the maximum likelihood estimation（MLE）method.A reliability model based on competing failure analysis is proposed.A case study of the GaAs lasers is given to validate the effectiveness of the model and its solving method.The results indicate that if only the degradation failure is considered,the estimated result will be comparably optimistic.Meanwhile,the correlation between the degradation and traumatic failure has a great influence on the accuracy of reliability assessment.

Performance evaluation of wavelet scattering network in image texture classification in various color spaces

The optimized color space is searched by using the wavelet scattering network in the KTH_TIPS_COL color image database for image texture classification. The effect of choosing the color space on the classification accuracy is investigated by converting red green blue （RGB） color space to various other color spaces. The results show that the classification performance generally changes to a large degree when performing color texture classification in various color spaces, and the opponent RGB-based wavelet scattering network outperforms other color spaces-based wavelet scattering networks. Considering that color spaces can be changed into each other, therefore, when dealing with the problem of color texture classification, converting other color spaces to the opponent RGB color space is recommended before performing the wavelet scattering network.

Development of Vegetable Industry in Summer in Cool Areas in Qinghai Plateau

The research surveyed advantages of summer vegetabIe production and status quo of summer vegetabIe industry in Qinghal PIateau, analyzed comparative advantages and existing probIems of summer vegetabIe production, and proposed suggestions of summer vegetabIe deveIopment in Qinghal Province according to market demands.