22,100 research outputs found
Data-Driven Ensemble Modeling of Equatorial Ionospheric Electrodynamics: A Case Study During a Minor Storm Period Under Solar Minimum Conditions
No full textThis project contains the main data of Hsu et al., (2020). All data is contributed by Chih-Ting Hsu. Please contact the contributor for further assistant
The poetry of Hsu Chih-Mo.
No full textHsu Chih-mo was an influential poet in China in 1920’s but his works have not been thoroughly studied either in or outside China. In this thesis the main features of Hsu's poetry are examined and attention is given to the influence he received from others and the impact of family life and social and political environment on his thoughts and works. His prose writings which supply valuable sources to the understanding of his poetry are often drawn upon.
Chapter I (Background) provides some basic information about the poet's life and the Chinese social and political conditions in his days. Chapters II (Woman), III (Love), IV (Revolution) and V (Religion) may be regarded as what the poet has to say and Chapter VI (Diction) and VII (Imagery), the ways he says them. On account of the scope of this paper, prosody, which requires extensive studies in the case of Hsu, is not treated as a separate topic, and in the last chapter (Conclusion), a brief summation and appreciation is given with emphasis on the role played by Hsu as an ever sincere and zealous promoter and experimenter of modern Chinese poetry ("new" poetry).Arts, Faculty ofAsian Studies, Department ofGraduat
Hsu Chih-mo, a literary biography.
Full text linkThis paper attempts to give a relatively accurate picture of Hsu Chih-mo's life with emphasis on the literary side as the title suggests. A generally chronological order is observed throughout the discussion. Chapter one covers the first period of Hsu's life, stressing his Cambridge days. Chapter two gives an account of Hsu's love life, literary works and activities in the first two to three years after he returned to Peking from abroad in 1922. Chapter three is a continuation of the previous one, up to the year 1926. Chapter four deals with Hsu's last years in Shanghai, with a special note on his disillusionment with love and life, and the final "revival" shortly before his death. Hsu is treated primarily as a poet rather than an essayist in this paper and his poetical works are examined separately in the relevant sections, i.e., chapters two, three and four. Some incidents and activities in Hsu's life are investigated in greater detail than others with a view to either (1): correcting erroneous or inaccurate impressions which have almost been perpetuated in both journalistic writings and even scholarly works concerning Hsu, or (2): demonstrating facts hitherto little known to the world so as to illustrate some important points which would otherwise remain unclear. Quite a number of Hsu's poems and articles, long forgotten or practically unknown because they have not been included in any of his collections, have been exhumed, and dozens of unpublished letters by him have been used in this biography
Joint subcarrier pairing and power allocation for OFDM transmission with decodeand-forward relaying
No full texta
Configuraciones de buena enseñanza a partir del marco de enseñanza para la comprensión
Full text linkFil: López, Jennifer. Universidad Nacional de Villa María; Argentina.Fil: Yan, Hsu Chih. Universidad Nacional de Villa María; Argentina.Fil: Bruzzo, Carolina. Universidad Nacional de Villa María; Argentina.Fil: Pérez Andrada, Mónica. Universidad Nacional de Villa María; Argentina.Fil: Civarolo, María Mercedes. Universidad Nacional de Villa María; Argentina
Joint Subcarrier Pairing and Power Allocation in OFDM Two-Hop systems
No full text正交分頻多工存取(OFDM)可以在無線通訊中克服多路徑效應並且提供頻率分集，當使用轉傳通訊的時候，頻率分集可以更充分得被利用。在這篇論文中，假設傳送端知道頻道狀態，我們想要在給定總和功率限制的情況下，藉由共同最佳化兩個接連時間區段的子載波搭配與每個子載波的功率分配來最大化 OFDM轉傳系統下的權重總和速率，我們限制在每個子載波上只有一個節點可以傳送。當轉傳使用的時候，我們考慮解碼前送(DF)策略，除此之外當我們不使用轉傳的時候，會有兩種模式的傳輸，他們的差別是傳送源是否被允許在第二個時間區段傳送。首先我們將問題闡述成一個混和整數規劃問題，這是一個非多項式難題，接著我們利用了連續放寬，並且在對偶域利用次梯度方法解決了放寬過的問題。放寬過的問題對於其中一種模式是凸面的，另一種則不是。雖然有一個原本的問題是凸面的，但是限制評定並沒有滿足，這就是說對偶性缺口在兩種模式中都不是零，所以對偶最佳解對於每種模式提供了一個可達成速率的上界。然而，對偶性缺口在子載波的數量趨近於無限大的時候差不多是零的。因此我們可以達到接近最佳的解。最後我們延伸到使用獨立功率限制的系統上。Orthogonal Frequency Division Multiplexing (OFDM) can overcome multi-path effect and provide frequency diversity in wireless transmission. Frequency diversity can be further utilized when relayed transmission is employed. In this thesis, it is assumed that the channel state information (CSI) is known to the source. We aim to maximizehe weighted sum rate of OFDM relaying system under total power constraint by jointly optimizing subcarrier pairing in two consecutive time slots and power allocation on eachubcarrier in each time slot. We restrict that there is only one node transmitting on each subcarrier. Decode-and-forward (DF) strategy is considered when the relay is used. Besides, there are two types of transmissions when relay is not used, the difference is whether the source is permitted to transmit in the second time slot or not. First we formulate the problem as a mixed integer programming (MIP) problem which is NP-hard. Then we make continuous relaxation and solve the relaxed problem in dual domain by sub-gradient method. The relaxed problem is convex for one type and non-convex for the other type. Although one primal problem is convex, the constraint qualification is not satisfied. It means that the duality gaps for both types are not zero, and the dual optimal solution for each type provides an upper bound of the achievable rate. However, the duality gaps are virtually zero when the number of subcarriers goes to infinity. Thus we can achieve nearptimal solution. Finally we extend the system to have individual power constraint.1 Introduction 1.1 Thesis Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Relay 4.1 Introduction to Relayed Transmission . . . . . . . . . . . . . . . . . . . 4.2 Relay System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3 Relaying Protocol and Strategy . . . . . . . . . . . . . . . . . . . . . . . 7.3.1 Relaying Protocol . . . . . . . . . . . . . . . . . . . . . . . . . 7.3.2 Relaying strategy . . . . . . . . . . . . . . . . . . . . . . . . . . 8.4 Capacity Theorem on Relayed Transmission . . . . . . . . . . . . . . . . 9.5 Achievable Rate of Different Models . . . . . . . . . . . . . . . . . . . . 10.6 Summary for Chapter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Single User Subcarrier Pairing and Power Allocation under Total Power Constraint4.1 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.1.1 Subcarrier Pair Channel Model . . . . . . . . . . . . . . . . . . . 15.1.2 Transmission Mechanism . . . . . . . . . . . . . . . . . . . . . 16.1.3 Achievable Rate for One Subcarrier Pair . . . . . . . . . . . . . . 17.2 Weighted Sum Rate Maximization for Type I Transmission . . . . . . . . 18.2.1 Primal Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.2.2 Dual Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.2.3 Interpretation of Weighting Factor as Quality of Service . . . . . 23.2.4 Analysis of Duality Gap . . . . . . . . . . . . . . . . . . . . . . 24.2.5 Achievability of the Optimal Value . . . . . . . . . . . . . . . . 25.2.6 Summary of Procedure . . . . . . . . . . . . . . . . . . . . . . . 26.2.7 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.3 Weighted Sum Rate Maximization for Type II transmission . . . . . . . . 27.4 Simulation Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.5 Summary for Chapter 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Single User Subcarrier Pairing and Power Allocation under Individual Poweronstraint 34.1 System Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.1.1 Major Effect on Individual Power Constraint . . . . . . . . . . . 34.1.2 Analysis of the system with fixed pairing . . . . . . . . . . . . . 35.2 Weighted Sum Rate Maximization for type I transmission . . . . . . . . . 38.2.1 Primal Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.2.2 Dual Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39.3 Simulation Result . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.4 Summary for Chapter 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Conclusion 45.1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45.2 Future Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46ibliography 4
Xinjiang (China), folk dancing of Uyghurs
No full textFolk-dance of UighursImage is part of research conducted by Chang Chih-Yi for the article: Land Utilization and Settlement Possibilities in Sinkiang
Author(s): Chang Chih-Yi
Source: Geographical Review, Vol. 39, No. 1 (Jan., 1949), pp. 57-75
Published by: American Geographical Society
Stable URL: http://www.jstor.org/stable/211157http://www.jstor.org/stable/211157Grayscal
sj-docx-1-taj-10.1177_20406223221098114 – Supplemental material for The comparative effectiveness of antidepressants for youths with major depressive disorder: a nationwide population-based study in Taiwan
No full textSupplemental material, sj-docx-1-taj-10.1177_20406223221098114 for The comparative effectiveness of antidepressants for youths with major depressive disorder: a nationwide population-based study in Taiwan by Sheng-Yu Lee, Liang-Jen Wang, Yao-Hsu Yang and Chih-Wei Hsu in Therapeutic Advances in Chronic Disease</p
- …
