1,721,135 research outputs found
(2(1):101-102)A Disccusion on the Chinese Interpretation of the "Self Topping" Habit in Tomato Plant
No full text(16(4):59-61)FIELD ACARICIDE TESTS AGAINST TWO-SPOTTED SPIDER MITE (TETRANYCHUS TELARIUS (L.)) ON COTTON
No full text本試驗共試5種殺蟎劑，防治田間棉紅蜘蛛（Tetranyohus Telarius (L.)）分設2處試驗田，在55年舉行。防治棉紅蜘蛛、幼蟲，以Delnav E.C（2.3-P-Dioxanedithiol S.S- bis〔0.0-die-phosphorodithioate〕之效果最好。棉紅蜘蛛卵期防治，Delnar，BS-2525（2.4-Dine，tro-ofluaro-acetamide）Milbex（4-Chlorophenyl 2．4．5-trichlorophengsazosulfide），chlo-robenzilaue等效果均甚良好。
The Acaricide used in this experiment consist of 5 kinds of chemicals. For the field test of protecting red spider mites (Tetranychus telarius L.) there were two localities to conduct the experiment in 1966. For protecting the cotton from red spider mites nemphs, the most effective pesticide is Delnav E. C. (2.3-P-dioxanedithiol S. S.bis- (0,0)-diethyl phosphorodithioate). For protecting the cotton from the eggs of red spider mittes, the effective pesticides are Delnav, Bs-2525 (2.4-Dine, tro-4-cyclohexyl phernolta nene sulfomate). Nissel (N-Methyl-N(I-naphthyl monofluaroacetamide), Milbex (4-chlorophenyl 2.4.5-trichlorophenylazo sulfide), and chlorobenzilate
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
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
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
(3(2):47-57)A Study on the Thrifty Use of Seed Potatoes in South Taiwan Ⅰ. Comparative Test on the Size of Seed Pieces and the Spacing between Seed Pieces
No full text1．本試驗就臺灣南部冬季栽培馬鈴薯之條件，光依種薯大小及株距疏密，探討節約馬鈴薯之合理方法。
2．試驗材料爲男爵(Irish Cobber)品種之種薯。
3．試驗方法採用複因子隨機區組設計，種薯處理分57g．及85g．二平準，株距處理分20cm．及60cm．三平準，共6處理組合，隨機排列，重複四次。
4．臺灣南部栽培馬鈴薯，於時期及時間上，適可利用水田與水稻行輪栽。
5．試驗結果以變量分析法分析各處理間產量之差異，雖在株距處理間及種薯處理間均表顯著，但此並非即證明栽培上屬於有利，而如差異不顯著時，卻即可證明用大種薯密株距之不利；又連應間差異不顯著，正說明種薯愈大而株距愈密者愈爲不利。
6．種薯之大小以用85g．者較57g．者不經濟，其間又以株距密者爲甚，蓋產量雖依85g．區有較多之傾向，然其產量之增加並不隨種薯重量成正比例增加85g．區之產量減去大量種薯之後，則其增產量及增產率遠遜於57g．區。
7．株距之疏密以20cm．區之種薯用量及產量均最高，然以同大之種薯，如僅增加株距密度，對於增產量而言，並無若何效果，對於增產率而言，則株距愈密者愈低，其趨勢正如上述增大種薯之傾向相同，散株距以20cm．者最不合算，尤以大種薯區更不合算。
8．產品等級參照臺灣馬鈴薯市場商情而論，無論種薯大小，均以株距60cm．區之上等薯百分比最高，下等薯百分比最低，20cm．區則反之。
9．以本試驗之結果，與在臺彎南部冬季栽培馬鈴薯條件而論，以57g．種薯植於60cm.×60cm.=360平方公分．之植距內較其他各種處理爲適合；即在節約種薯之前提下，吾人已獲有一概念：寧以較小之種薯植於較大之植距，使各植株根部有充分之生育環境，以發揮種薯之能力爲得策。（四十年七月於鳳山）1. This experiment deals with the reasonable method of the thrifty use of seed potatoes, according to the size of seed pieces and the spacing between seed pieces, under condition of the winter time in South Taiwan.
2. The variety of the potato used in this experiment is Irish Cobber.
3. Rondomized block design was adopted. The sizes of seed pieces were treated in to two levels, 57 gram and 85 gram. The spacing between seed pieces was divided into three levels, viz: 20 cm, 40 cm. and 60 cm. Altogether 6 treatment combinations comprise a block, and were Random arranged, replicated 4 times.
4. In planting Irish potato in South Taiwan, winter is a proper season as well as a suitable growing pericd to utilize the field by rotation with rice.
5. As to the size of seed piece, the 85 gram one is uneconomic as compared with the 57 gram, the smaller the spacing the great the uneconomic. The yield in the 85 gram plot higher; however, the increase in yield is not proportional to the increased amount of the seed potato used. After minus the large amount of seed potato from the yield of the 85 plot, it increasement in yield and the percentage of in creasement is, as compared with the 57 gram plot, is much lower.
6. In the 20 cm. spacing plot, both the amount of seed potato used and its yield are the highest. By using the same size tuber, that increasing the density of crops per unit gives no effect to the increasement of yield. As for the percentage of yield increasement, the 60 cm. plot is the largest. The closer the spacing the lower the yield. This tendency is just the same as that of the seed pieces already stated before. Therefore the 20 cm. plot is the most unprofitable, especially the large sized tuber plot.
7. Tuber are graded according to the marketing of the Taiwan potato market, either the 57 gram seed piece plot or the 85 gram plot, the 60 cm. spaced plot gives high percentage of first-graded tuber and the 20 cm. plot vice versa.
8. From the result of the experiment and under the condition in winter time of South Taiwan, the raising of Irish potato is wisely suggested by using 57 gram seed pieces and spacing 60 cm. ×60 cm. under this principle of the thrifty use of seed tubers, e have got a general idea: It is prefer to use smaller seed pieces and plant in large spaced area, giving each crop's root a best growing environment to enlarge the energy of the seed tuber is a good policy
(16(3):44-54)STUDIES ON DISEASES IN POST STAGE OF COTTON PLANT DEVELOPMENT FOR RESEARCHING CONTROL
No full text1. 五十六年度棉作生育後期病害之發生有黑化病要、炭疽病、角斑病、葉燒病、黑斑病、及紅腐病等葉部病害尤以黑斑病最嚴重，平均發生率達44.43%，棉鈴以黑化病最厲害，平均發病率達33.79%。
2. 棉鈴黑化病是最具有破壞性之一種病害，病原菌由傷口侵入，加速棉鈴之腐爛阻礙正常之開絮，並污染纖維與種子之腐壞，影響產量與品質至巨。
3. 田間防治試驗共使用殺菌劑Granosan M，Difolatan，Polyram combi，Copper san-doz，Mercuric Bordeaux，Pan mercuric Bordeaux，Sin mercuric Bordeaux等七種，Granosan M 1000倍防治黑斑病最有效，Difolatan 1000倍防治炭疽病與黑化病效果最優異，其餘各試藥均在伯仲之間，但都比對照區良好，各殺菌劑防治黑化病藥效順序為：Difolatan > Copper sandoz > Polyram combi > Granosan M > Mercuric Bordeaux > Sin mercuric Bordeaux > Pan mercuic Bordeaux > Check。
Cotton is one of the important fiber crops of Taiwan, where the crop occupying about 2000 hectares. According to recent investigation, cotton plant is subject to a number of diseases in the later period of growth such as Diplodia boll rot, Alternaria leaf spot, Anthracnose, Fusarium boll rot, Angular leaf spot, and cercospora leaf spot, etc. Among them, cotton boll rot incited by Dipodia gossypina and Alternatia leaf spot incited by Alternaria. macrospora Zimm. are considered to be the most serious diseases of cotton boll and leaves. The average rate of cotton boll rot occurance in later period of Growth is 38.97% and Alternaria leaf spot is 44.43%.
Diplodia boll rot has been recognized as one of the destructive diseases of cotton in Taiwan. It is caused by Diplodia gossypina cook which may enter through wounds or opening made by insects in jury such as sping bollworm, pink bollworm, pink boliworm, cotton boliworm. Initial symptom shows discolored spots on the outside of the boll. Then the damaged bolls turn black and, after a short time, become thickly covered with pycnidia. Black pycnidiospores exude out of the pycnidia, making the whole surface of the boll to be smutty, followed frequently by staining and rotting of the seed and fiber.
Several fungicides, such as Granosan M. Difolatan, Polyram combi, copper Sandoz, mercuric Bordeaux, Pan mercuric Bordeaux and Sin mercuric Bordeaux were tested for controlling those diseases. The results revealed that Granosan M. was the best one for effective controlling of Alternaria leaf spot. Difolatan 0.1% was proved to be significantly effective for controlling Anthracnose and Diplodia boll rot. The effectiveness of the fungicidal controlling of Diplodia boll rot may be listed in descending order as in the following: Difolatan, Copper sandoz, Polyram combi, Granosan M, Mercuric Bordeaux, Sin mercuric Bordeaux, Pan mercuric Bordeaux.
Diplodia boll rot is the most disastrous one. It causes great losses by reducing yield, staining and reducing the strength of the lint. According to the results of Investigation, Occurance of the disease in the field is closely related With insect injury. Hence the application of fungicides in combination with insecticide may give the economic and significant effect for controlling Diplodia boll rot
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