方向的转变

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

Abstract〕in network environments,information services and core works of university libraries have alternated,while the cataloging of university libraries has changed,which characterizes the socialization of cataloging service,diversification of cataloging objects,and normalization and standardization of cataloging data.catalogers have to perform their new roles such as quality control for cataloging data,cataloging of non-book resources, and building special databases.in order to adapt to the new demand in the library's cataloging,catalogers should transform their roles,improve their special quality,and be active in innovation.

摘 要〕网络环境下，高校图书馆信息服务功能和核心业务的发生转变，编目工作也向编目服务的社会化、编目对象的多元化和编目数据的规范化和标准化等方向发展。编目人员的职能转向书目数据的质量控制、非书资源的编目、特色数据库的建设与信息服务等新的领域。编目人员必须调整专业知识结构，提高业务水平，才能适应网络环境下编目工作的要求。

Looking back on the past and|00king into the future, we will be in line with the goal of SIRI's Deepening Reform Scheme and the need of socialist market economy, set up new p「0cessir19 system and management model which is in accordance with the law of science and technology development, carry out overall reform of organization, personnel affairs, distribution, scientific research, direction of development, and the contents and style of management, bring the two superiorities-science and technology and the land of SIRI into full play and transform our institute from pure scientific research institute into a scientific research entity on the way of self-improvement and self- development.

回顾历史，展望未来，我们将按照所的深化改革方案的大目标，根据社会主义市场经济发展的需要，建立适应科技自身发展规律的运行新机制和管理模式，对机构、人事、分配、科研和开发方向以及经营内容方式等进行全方位的改革，充分发挥本所科技和土地两大优势，尽快将我所由纯科研型的研究所转变为走&四自&道路的科研型经济实体。

From a perspective of equal rights to education,an analysis covering the latest development,challenges for curriculum offered by Hong Kong Vocational Training Council,and new requirements for employees from rapidly changing workshop is made after a summary of the literature and interview with instructors and employees.

从教育机会均等的角度入手，透过文献整理及对教师和雇主的访问，对香港职业训练局课程的最新发展情况、课程发展面对的困难、急速转变的工作间对员工素质的要求进行了分析，并提出未来发展的可行方向。

In addition to strengthening the socialism honor versus dishonor view education, the family must value the family moral education, change the family idea, paying attention to with the child"s communication, respecting the minor"s corpus position, attaining speech to spread and the body teach of unify; The school wants to strengthen the virtuous construction of teacher, set up the minor"s moral education mode to make people the center, improve the teaching method and means, change the form of the moral education, strengthen the development to the student studies the ability and creative ability, strengthen the mental health education, slice to strengthen the school actually to the farmer work son and daughter of moral educate the work, extend the national school does to learn the scale, strengthening to take charge of the work to the private school, build up a series contact system and improve the peripheral environment of campus etc; The all pay attention to the minor"s moral education together, carry on the right value leading, strengthen the market management that sells the book, guide the campus folk song toward healthy direction development, strengthen the management to the bad advertisement and the low level cultural amusement amenity, meanwhile , enlarge the strength to cure the net cafe, open the public cultural facilities, carry out 2004" central No.1 documents" hard, the department concerned can unite the community to open the exhibition cultural activity to accept the farmer work son and daughter, make widely available the moral knowledge and moral norm etc.

最后针对各类问题，寻求改进和加强未成年人道德教育的对策，除了加强社会主义荣辱观教育之外，家庭必须重视家庭道德教育、转变家庭观念，注重与孩子的沟通，尊重未成年人的主体地位，做到言传和身教的统一；学校要加强师德建设，构建以人为本的未成年人道德教育模式，改进教学方法和手段，变革道德教育的形式，加强对学生学习能力和创新能力的培养，加强心理健康教育，切实加强学校对农民工子女的道德教育工作，扩大公立学校的办学规模，加强对私立学校监管工作，建立一系列联系制度以及改善校园周边环境等；全体共同关注未成年人的道德教育，进行正确的价值观引导，加强对图书销售市场的管理，引导校园歌谣向健康方向发展，加强对不良广告和低层次文化娱乐场所的管理，同时加大对网吧的整治力度，开放公共文化设施，认真落实2004&中央一号文件&，有关部门可联合社区居委会开展文化活动接纳农民工子女以及普及道德知识和道德规范等。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。