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1.
Summary Adults have tried to identify and to seek complex explanations for Potter's success. She explained it simply: “It is much
more satisfactory to address a real live child. I often think that was the secret of the success of Peter Rabbit; it was written
to a child—not made to order” (Lane, 1976, p. 183). She felt the more spontaneous the pleasure, the better the result.
You are encouraged to heed Potter's advice. Address the real live child as you enjoy the pleasure of this adventure into the
life and times of Beatrix Potter and all her animal friends. 相似文献
2.
Optical computing 总被引：3，自引：0，他引：3
Researchers are using new conducting polymers to make transistor-like switches that are smaller and thousand times faster
than the silicon transistors. Electricity-conducting organic molecules that are much thinner than semiconductor wires, are
being teased into self-assembling. These advances promise super-tiny all-optical chips. In fact, progress in optical storage
devices can now shrink an entire Library’s book collection down to sugar-cube size. Optical computers could be leaving silicon
number crunchers choking in the dust by decade’s end. 相似文献
3.
New Zealand has had a national school science curriculum for more than 80 years. In the past the evolution content of this
document has varied, and has at times been strongly influenced by creationist lobby groups. The ‘new’ science curriculum,
to be fully implemented in 2010, places much greater emphasis than before on understanding evolution, and also on teaching
the nature of science. Interplay between the two can potentially improve student understanding of the culture and processes
of science in general and evolutionary theory in particular. While the explicit use of the word ‘evolution’ highlights its
significance, it is necessary to provide both resources and pedagogical guidelines to support teachers in dealing with this
important topic. 相似文献
4.
Aaron Wildavsky 《Academic Questions》1993,7(1):77-79
Aaron Wildavsky, a founder and president of the California Association of Scholars, died on September 4, at the much too early
age of 63.
Professor Wildavsky's life exemplified a total commitment to the university, and his achievements were prodigious. He authored
or edited, alone or with colleagues, some three dozen books, and he wrote hundreds of articles. In the thirty years he spent
at Berkeley, he was at various times chairman of the Department of Political Science and founding Dean of the Graduate School
of Public Policy. He also found time to serve as president of the American Political Science Association and the Policy Studies
Association, and to be active in myriad other organizations. When Yale, where he had earned his doctorate in 1959, earlier
this year made him an honorary Doctor of Social Science, it stated, “You have improved every institution with which you have
been associated.”
Aaron Wildavsky was profoundly concerned about the future of the university, the institution that he loved so much and served
so well. At the Fourth National Conference of the NAS, held in San Francisco this past April, he expressed his fears about
the effect of politically correct faculty hiring practices on the long-range future of education.
Academic Questions here reproduces his remarks in the hope—one that, in fact, he shared—that for once his predictions will be proved wrong.
Aaron Wildavsky was Class of 1940 Professor of Political Science and Public Policy, University of California at Berkeley. 相似文献
5.
赵荣乐 《上海大学学报(英文版)》2000,4(2):171-174
1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｓｑｕａｓｈｍｏｓａｉｃｖｉｒｕｓ (ＳｑＭＶ)ｉｓｏｎｅｏｆｔｈｅｍｏｓｔｉｍ ｐｏｒｔａｎｔｃｕｃｕｒｂｉｔｖｉｒｕｓｅｓ[1～ 3] ,ａｎｄｉｔｃａｕｓｅｓｇｒｅａｔｌｏｓｓｅｓｉｎｍｕｓｋｍｅｌｏｎｐｒｏｄｕｃｔｉｏｎ[4 ] .Ｏｎｅｏｆｔｈｅｍａｉｎｗａｙｓｔｏｃｏｎｔｒｏｌｐｌａｎｔｖｉｒｕｓｄｉｓｅａｓｅｓｉｓｔｈｅｉｎｄｕｃｅｍｅｎｔｏｆｒｅｓｉｓ ｔａｎｃｅｔｏｖｉｒｕｓｅｓ[5] ｂｙｓｏｍｅｂｉｏｌｏｇｉｃａｌａｎｄｎｏｎ ｂｉｏｌｏｇｉｃａｌｆａｃｔｏｒｓ[6～ 9… 相似文献
6.
This article compares the costs of four assessment formats: multiple choice, open ended, laboratory station, and full investigation. The amount of time spent preparing the devices, developing scoring consistency for the devices, and scoring the devices was tracked as the devices were developed. These times are presented by individual item and by complete device. Times are also compared as if 1,000 students completed each assessment. Finally, the times are converted into cost estimates by assuming a potential hourly wage. The data show that a multiple choice item costs the least, and that it is approximately 80 times as much for an open ended item, 300 times as much for a content station, and 500 times as much for a full investigation item. The very large discrepancies in costs are used as a basis to raise several policy issues related to the inclusion of alternative assessment formats in large scale science achievement testing. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 615–626, 2000 相似文献
7.
This study investigated whether intuitive, naive conceptions of “living things” based on objects’ mobility (movement = alive)
persist into adolescence and affect 10th graders’ accuracy of responses and reaction times during object classification. Most
of the 58 students classified the test objects correctly as living/nonliving, yet they demonstrated significantly longer reaction
times for classifying plants compared to animals and for classifying dynamic objects compared to static inanimate objects.
Findings indicated that, despite prior learning in biology, the intuitive conception of living things persists up to age 15–16 years,
affecting related reasoning processes. Consideration of these findings may help educators in their decisions about the nature
of examples they use in their classrooms. 相似文献
8.
The study of gas clouds orbiting in the outer regions of spiral galaxies has revealed that their gravitational attraction is much larger than the stars alone can provide. Over the last twenty years, astronomers have been forced to postulate the presence of large quantities of ‘dark matter’ to explain their observations. They are still in the ‘dark’ as to its true nature. 相似文献
9.
Michael I. Krauss 《Academic Questions》2000,13(2):38-47
A Russian, a Cuban, an American, and a layer are seated in the same compartment on a train. The Russian takes a bottle of
vodka out of his luggage, pours some into a glass, drinks it, and firmly states: “In Russia, we have best wodka in the vorld,
nowhere in the vorld you can find wodka as good as one we make in mother Russian. And, we have much of it, so much we can
just throw it away like vater.” That said, the Russian opens the train's window and hurls the vodka out of the train. The
others in the compartment are quite impressed. Then the Cuban removes a box of Havana cigars from his luggage, takes one,
lights it, and begins to smoke. “In Kooba, we have de best cigars of de world, habanas, nowhere in de world are dere such
many and good cigars, and we have much of dem also, such many dat we can just trow dem away.” Making that bold statement,
the Cuban sends the box of Havanas the way of the vodka. Once again, the compartment's occupants are quite impressed. Then,
not to be outdone, the American abruptly stands up, opens the window wide, and throws out the lawyer. 相似文献
10.
Felicia M. Moore 《Research in Science Education》2008,38(5):589-610
Using multiple theoretical frameworks, reflective writings and interviews, this study explores preservice elementary teachers’
emerging identities as science teachers and how this identity is connected to notions of critical agency and a stance toward
social justice. The study addresses two central questions pertaining to preservice teachers’ conceptions as “agents of change”
and how their perceptions as change agents frame their science teacher identities and understanding of teaching science in
urban elementary classrooms. Their identity in the moment as elementary preservice teachers—not yet teachers—influences how
they view themselves as teachers and how much agency or power they feel they have as agents of change in science classrooms.
Findings suggest that science teacher education must play a more immediate, fundamental and emancipatory role in preparing
preservice teachers in developing science teacher identities and a stance toward social justice. 相似文献
11.
Mark Mason 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2011,84(1):443-455
This paper situates the philosophy and politics of partnership in educational development cooperation in the context of wider
epistemological and axiological shifts in contemporary social theory. Partnerships in development cooperation are also considered
in the light of the alleged failure of international development assistance, a claim that has received much attention with
the publication of, among others, William Easterly’s The White Man’s Burden: Why the West’s efforts to aid the rest have done so much ill and so little good (2006) and of Dambisa Moyo’s Dead Aid: Why aid is not working and how there is another way for Africa (2008). Partnership as a development strategy offers one response to these claims, but if shared development objectives and policies,
shared ownership, shared decisions about where aid is targeted, shared rights, shared responsibilities, and shared implementation
strategies still leave the education development community facing challenges as big as ever, it might be time, the paper concludes,
to consider whether the concept of partnership has not been expanded too far as a modality in development cooperation. 相似文献
12.
Lead concentrations in roots, stems and leaves of accumulating and non-accumulating ecotypes ofSedum alfredii (Hance) were studied through a hydroponic experiment with different Pb concentrations supplied as Pb(NO3)2. Lead concentrations in leaves and stems of the accumulating ecotype were 4–9 times and 3–5 times those of the non-accumulating
ecotype, and Pb-accumulated amounts in stems and leaves of the accumulating ecotype were 4–9 times and 8–11 times higher than
those of the non-accumulating ecotype, respectively. The results indicated that the accumulating ecotype had better ability
to transport Pb from roots to shoots. The subcellular distributions of Pb in the root, stem and leaf tissues were studied
using sucrose differential centrifugation. Approximately 50% of Pb contents was found to be associated with the cell wall
fraction in stems of the accumulating ecotype and the percentage increased to 80% both in roots and leaves, no matter when
plants were grown with different levels of Pb. The results indicated that the distribution of Pb on cell walls of the accumulating
ecotype could mainly account for the high tolerance to Pb.
Project supported by a Key Project from the Educational Ministry of China (No:02180) and by the Outstanding Young Scientist
Grant from the National Natural Science Foundation of China (No: 39925024). 相似文献
13.
Objective: To investigate the cytokine response pattern (IL-4/IFN-γ) in infants with RSV infections and bronchiolitis during the acute phase. Methods: Four-color flow cytometry was used to measure intracellular IL-4 and IFN-γ expressions in peripheral blood CD3+ and CD8+ lymphocytes from RSV-infected and bronchiolitis infants. Serum IL-4 and IFN-γ levels were also determined. Results: RSV-infected and bronchiolitis infants showed no statistical differences from not-RSV-infected or pneumonia infants and control in the frequency of IL-4 and IFN-γ expressions in CD3+CD8- lymphocytes, showed no obvious Th1/Th2 imbalance, while IFN-γ was expressed much more frequently in CD3+CD8+ lymphocytes. Systematically, RSV-infected and bronchiolitis infants showed much lower levels of serum IL-4 and IL-4/IFN-γ ratios and much higher serum IFN-γ levels than control. However, there were no statistical differences in the above three indices between RSV-infected and not-RSV infected infants or between bronchiolitis and pneumonia infants, except that bronchiolitis infants had a higher level of serum IFN-γ than pneumonia infants statistically. Conclusions: There is no type-2 cytokine response predominance in the acute phase of RSV infection and bronchiolitis. IL-4 production is suppressed and IFN-γ production upregulated, the latter being most prominent in bronchiolitis infants. 相似文献
14.
Rachel E. Wilson Amber R. Jarrard Deborah J. Tippins 《Cultural Studies of Science Education》2009,4(4):945-950
Few twentieth century scientists have generated as much interest as Albert Einstein and Marie Currie. Their lives are centrally
depicted in numerous children’s biographies of famous scientists. Yet their stories reflect interesting paradoxes and tacit
sets of unexplored sociocultural assumptions about gender in science education and the larger society. Trevor Owens’ analysis
of common Einstein and Currie biographies for children provides a context for us to consider a deeper reading of these scientists’
stories in ways that can be both empowering and liberating. In the process, we consider some interesting tensions surrounding
the gendered nature of their stories. 相似文献
15.
In the People’s Republic of China and England, the Government has devoted much attention in recent years to environmental
education. the approaches taken in both countries differ, however. The paper looks at some of the similarities and differences
that exist and the reasons for them. In particular the paper looks at policy issues as well as practical aspects of environmental
education. The idea of Education for Sustainable Development, which is referred to more in England than in China, is critically
examined.
Project(D09702) supported by the State Education Ministry for the “Ninth Five-Year” Plan. 相似文献
16.
N. Port Saravanan 《Resonance》2004,9(1):6-11
Human exposure to pollutants within home exceeds the recommended limits set by the World Health Organisation (WHO). Unfortunately,
indoor pollution has not been given much importance although most people spend as much as 80–90% of their time indoors. The
health effects from indoor air pollutants may be experienced soon after exposure or, possibly, years later. 相似文献
17.
P. Radhakrishnamurty 《Resonance》2010,15(6):548-560
A century and a half ago, Maxwell introduced a thought experiment to illustrate the difficulties which arise in trying to
apply the second law of thermodynamics at the level of molecules. He imagined an entity (since personified as ‘Mawell’s demon’)
which could sort molecules into hot and cold and thereby create differences of temperature spontaneously, apparently violating
the second law. This topic has fascinated physicists and has generated much discussion and many new ideas, which this article
goes over. Particularly interesting is the insight given by deeper analysis of the experiment. This brings out the relation
between entropy and information, and the role of irreversibility in computing as we understand it — topics still under discussion
today. 相似文献
18.
刘寅初的诗歌主张是传统诗歌“为人生”主张的当代化,但又有其侧重点,即诗歌要歌颂时代建设成就,符合时代精神,要有真性情。与此诗歌理论相一致的是,其诗歌具有鲜明的时代性、题材选用的现实美以及与时俱进的音韵美。刘寅初的诗歌理论对近体诗歌当代化探索有着积极的启示意义。 相似文献
19.
This paper examines the media coverage of the murder of a young Muslim girl in Mississauga, Ontario in December 2007. We examine
how that coverage moved from concerns for a terrible family event to the use of the language of Samuel Huntington’s “Clash
of Civilizations.” We explore the nature of this exaggeration that occurs in times of threat and the “hardening” and eventual
clashing of identities that can follow. We interweave with these matters considerations of the pedagogical and familial consequences
of such identity-exaggeration under threat. We propose that the provisional, negotiated, and casual conviviality of identities
that precedes times of threat are cast into what Ivan Illich called “a zone of deep shadow.” We propose, also, that it is
this locale of an interdependent, co-determining conviviality of identities that can profitably be the locus of rich and intellectually
vital classroom conversations. 相似文献
20.
Ofra Korat 《Education and Information Technologies》2009,14(1):39-53
The effects of reading a CD-ROM storybook on children’s early literacy were examined as a function of their age group and
the number of times they used the software. The investigation was carried out on 214 children: 108 pre-kindergarten children
(aged 4:2 to 5:3) and 106 kindergarten children (aged 5:3–6:4). This population included 107 girls and 107 boys. The children
in each group were randomly assigned to one of three groups. The first intervention group was afforded three CD-ROM storybook
reading sessions. The second group was afforded five reading sessions and the third group served as a control and was afforded
the regular kindergarten program. Pre- and post-intervention early literacy measures included vocabulary, word recognition
and phonological awareness. No age group differences were found between the children’s early literacy progress after using
the software and no interaction was found between age group and the number of reading sessions. Children from both age groups
exhibited a similar level of story comprehension. Children who used the software five times exhibited greater progress in
word meaning than those who used it three times and children in both of these groups did better than the control group. Children
who used the software five times exhibited greater progress in word reading and phonological awareness than children in the
control group. Implications for future research and education are discussed. 相似文献