科创中国

从战场到商场,及时有效的情报系统越来越重要.以前是大鱼吃小鱼,现在更多的则是快鱼吃慢鱼,对市场对竞争对手的了解和反应稍慢一拍,很有可能就陷入被动.

Wood frog Lithobates sylvaticus tadpoles develop in temporary wetlands where high population densities can force tadpoles into aggregations that intensify competition and can lead to cannibalism. However, chemical alarm cues released from injured conspecifics could also dissuade cannibalism. The purpose of this study was to test mechanisms that may influence can- nibalistic behaviour. We tested whether the tendency of tadpoles to consume conspecifics would increase with the presence of competition and/or cues of profitable diets. Tadpoles placed in 1L experimental containers were tested for feeding initiation times of multiple diets, including conspecific tissues and conspecific tissues combined with chemical cues from the alternative diets (brine shrimp and comrneal). Tadpoles were tested in the presence and absence of a competitor, and at multiple times over the course of the study. Tadpoles exhibited an altered response to diets over time; however the presence of a competitor reduced re- sponse times to all diets including conspecific tissues. Similarly, the presence of specific diets also reduced the response time of tadpoles to conspecific tissues. These results suggest competition among feeding tadpoles could result in aggressive behaviour leading to indiscriminate predation and cannibalism [Current Zoology 60 (5): 571-580, 2014 ].

Social challenges from rival conspecifics are common in the lives of animals, and changes in an animal's social environment can influence physiology and behavior in ways that appear to be adaptive in the face of continued social instability (i.e. social priming). Recently, it has become clear that testosterone, long thought to be the primary mediator of these effects, may not always change in response to social challenges, an observation that highlights gaps in our understanding of the proximate me- chanisms by which animals respond to their social environment. Here, our goal is to address the degree to which testosterone me- diates organismal responses to social cues. To this end, we review the behavioral and physiological consequences of social chal- lenges, as well as their underlying hormonal and gene regulatory mechanisms. We also present a new case study from a wild songbird, the dark-eyed junco Junco hyemalis, in which we find largely divergent genome-wide transcriptional changes induced by social challenges and testosterone, respectively, in muscle and liver tissue. Our review underscores the diversity of mechani- sms that link the dynamic social environment with an organisms' genomic, hormonal, and behavioral state. This diversity among species, and even among tissues within an organism, reveals new insights into the pattern and process by which evolution may alter proximate mechanisms of social priming.

上海建工集团股份有限公司在企业实践过程中积极探索和创新干部选拔任用机制,把竞争上岗和择优聘任作为选拔干部的重要方式.经过多年的实践,不仅增强了领导干部的责任意识,也提高了职工群众的关注度,取得了一定的成效.

12月7日,在共同投资华谊兄弟不到半个月后,媒体确认"三马"再次联手投资中国平安.此前,11月底,香港投行圈就传出马云和马化腾将参与中国平安H股定向增发的消息.这是"三马"(马云、马化腾、马明哲)自一同设立互联网保险公司-众安在线、共同投资华谊兄弟之后的第三次合作.知情人士透露,近期,中国平安、阿里及腾讯三方管理层频繁走动、互相拜访,目的是在三方资本纽带关系确立的基础上,进一步寻求业务层面的合作,即如何充分发挥各自所长,在互联网金融的融合上实现深度共赢.此前,马明哲在平安内部讲话时称,未来最大的竞争对手不是其他传统金融企业,而是如阿里巴巴、腾讯等现

在高等教育迅速发展的背景下,由于医学专业的特性,导致医学生的就业形势日趋严峻.如何有效解决医学生就业不理想的问题,已成为医学院校现阶段必须解决的重要问题.本文在分析当前医学生所面临的就业形势的基础上,探讨从政府、学校、学生3个层面提高医学生就业竞争力的现实可能性,即通过政府的政策引导,吸引学生到基层医疗机构就业;通过医学院校的教学改革,提高学生的专业素养;通过医学生择业的观念转变,为其争取更多的就业机会.

通过探讨新建本科院校在目标定位、师资力量、课程开设、专业设置等方面的实际问题,着力分析其社会竞争力处于弱势的根本原因,借用经济学上错位竞争的理念,在目标定位上形成错位定位,在专业设置、课程开设上形成错位转移,走"政、校、企"结合的道路等策略,不断提高其社会竞争力.

时代的发展使地市党报面临的竞争越来越激烈,要在这激烈的竞争之中站稳脚跟,地市党报急需寻觅出一条行之有效的发展途径,而重视加强民生新闻方面的报道是保持并增强其生命力的最有效途径.地市党报的生命力表现在哪里?