1,720,997 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
(29(1):1-11)Reevaluation of chemicals for the rice green leafhopper control in Taiwan
No full text本試驗係農林廳交辦，由嘉義農業試驗分所及臺中區農業改良場，將政府歷年來推荐於水稻黑尾葉蟬之防治藥劑於相同環境下進行藥效之比較試驗。試驗分別於民國64年及67年第一期作舉行。結果顯示，目前植物保護手冊所列用於防治黑尾葉蟬藥劑，對黑尾葉蟬之防治效果差異很大。在兩試區防治效果較優者，按其優劣順位為（1）乳劑類：55 % Azodrins , 50 % Tamaron L . C , 40.64 % Furadan F, 27.4 % Bidrins , 24 % Lannate L , 40 % Kilval S 等六種藥劑。（2）可濕性粉劑類：75 % Orthene SP , 50 % Orthene WP , 90 % Lannate WP，及75 % Furadan WP 等四種。（3）粒劑及粉劑類對黑尾葉蟬之防治效果較差，其中以3.5 % Ofunack-M , D , 3 % Furadan G 及5 % RGeofos G 稍佳。在第一期稻作期問防治黑尾葉蟬時可選用上列乳劑類及可濕性粉劑類藥劑，於水稻孕穗至乳熟期施藥1-2 次較為經濟。
Th rice green leafhopper, Nephotettix spp. is an important insect pest of rice in Taiwan. During 1st rice crop, the population of the insect pest in central and southern parts of Taiwan used to reach more than 100 hoppers per sweep net and cause economic damage to rice plant. Besides direct damage, the hopper also act as the vector of virus diseases, such as yellow dwarf and transitory yellowing. Control of this hopper up to present is mainly depend upon insecticidal applications and more than 30 different formulated insecticides have been registered with the government for controlling this insect pest since last 10 years. In order to provide a basis for farmers to select more effective insecticides from such great amount compounds, a field reevaluation of chemicals for the rice green leafhopper control experiment was then conducted in Chiayi and Taichung districts simultaneuously in 1975 and 1978. The plot size of the experiments in two lecations were 50 m2 with four replications and were arranged in a randomized complete block design. The insecticidal application was start while the insect population reach the level above 5 hopper per sweep net (35 cm in dia.) and the effect of insecticides were investigated 3 and 10 days after treatment for foliar application and 7 and 20 days after treatment for granules application. Results of these experiments are summarized as follows.
The effect among chemicals tested on the rice green leafhopper control differed greatly. Based on data obtained from Chiayi and Taichung districts, the following chemicals namely 55% Azodrin S., 50% Tamaron EC., 40.64% Furadan FW., 27.4% Bidrin S., 20% Lannate L., 40% Kilval S., 75% Orthene SP., 50% Orthene WP., 90% Lannate WP. and 75% Furadan WP. had better effect for the control of the rice green leafhopper than the others. Dust and granular formulated compounds tested in these experiment had relative poor effect. According to the pattern of population growth of the rice green leafhopper in Taiwan in first rice crop, one to two foliar-applications in a period of booting to milky stage are need to protect rice plant from an economic damage of this insect pest
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
(27(1):1-11)REEVALUATION OF CHEMICALS FOR THE BROWN PLANTHOPPER CONTROL IN TAIWAN
No full text本試驗係省農廳委由嘉義農業試驗分所及臺中區農業改良場，將政府歷年來推薦於水飛蝨防治用藥劑於相同環境下進行藥效比較試驗。試驗分別於民國64年及66年稻褐兩次舉行。試驗結果表示，目前值物保護手冊所列用於防治褐飛蝨藥劑對褐飛蝨之防治效果差異很大，同時在兩試驗區防治效果較優者，按其優劣順位為(1)乳劑類：40.64% Furadan FW, 40% Hokbal EC, 20% MIPC EC; (2)可濕性粉劑類：75% Furadan WP, 50% Unden WP, 50% MIPC WP, 75% Orthene WP及40% BPMC WP; (3)粉劑類1% Unden D, 3.5% Ofunak-M D.及(4)粒劑頓：3% Furadan G, 5% Unden G., 5% Geofos G.及6% Mipspanon G.等。上述藥劑中，在第二期稻作期間，使用乳劑，可濕性粉劑或粉劑通常需要施藥2至3次方足以抑制褐飛蝨之增殖為害，而粒劑則通常使用1~2次即可獲得相同的防治效果。
A total of 35 insecticides have been registered with the government for the brown planthopper control since last 10 years. Recently, Some of these chemicals have been found by no means satisfactory to control the brown planthopper by the extension workers and farmers. In order to provide a basis for the farmers to select more effective insecticides from among these compounds, a series of experiments were then conducted in Chiayi and Taichung districts simultaneously to reevaluate those chemicals under field conditions in 1975 and 1977. The result of these experiments are sumarized as follows:
The effect among chemicals tested on the brown planthopper control differed greatly. The following chemicals namely 40.64% Furadan FW., 40% Hokbal EC., 20%MIPC EC., 70%Furadan WP., 50 %Unden WP., 50% MIPC WP., 75% Orthene WP., 40% BPMC W P., 1% Unden D., 3.5% Of unak-M D., 3% Furadan G., 5% Unden G., 6% Mipspanon G. and 5% Geofos G. showed better effect on control of the brownplanthopper than the others both in Taichung and Chiayi experiments. The granules in general had longer residual effect than foliar applications and one to two applications during booting to heading stage controlled the brown planthopper satisfactorily throughout a crop. On the other hand, to obtain a better fesult from the foliar application, including emulsions (or solutions ) , wettabe (or soluble) powders and dusts requisted 2-3 or more applications per crop due to the shorter residual effect and the difficulty to deposite the chemicals efficiently in the habitat of the hoppers especially during the middle or later stages of plant growth. Therefore continous applications usually were needed while the application made in case of the population of the brown planthopper in great increase. Based on the pattern of population growth of the brown planthopper in Taiwan, the rice plant can be protected from a severe damage of the insect during maturing stage if the brown planthopper can be controlled satisfactorily at maxinum nymphal stage of 2nd generation after its immigration into paddy field or at the end of booting stage of rice
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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