Browsing by Issue Date, starting with "2015-10-03"

Now showing 1 - 20 of 20836

Numerical radii for tensor products of matrices
(2015-10-03)
Gau, Hwa-Long
;
Wang, Kuo-Zhong
;
Wu, Pei Yuan
;
應用數學系
;
Department of Applied Mathematics
For n-by-n and m-by-m complex matrices A and B, it is known that the inequality w(A circle times B) = parallel to A parallel to w(B) holds, where w(center dot) and parallel to center dot parallel to denote, respectively, the numerical radius and the operator norm of a matrix. In this paper, we consider when this becomes an equality. We show that (1) if parallel to A parallel to = 1 and w(A circle times B) = w(B), then one of the following two conditions holds: (i) A has a unitary part, and (ii) A is completely nonunitary and the numerical range W(B) of B is a circular disc centered at the origin, (2) if parallel to A parallel to = parallel to A(k)parallel to = 1 for some k, 1 <= k < infinity, then w(A) >= cos(pi/(k + 2)), and, moreover, the equality holds if and only if A is unitarily similar to the direct sum of the (k + 1)-by-(k + 1) Jordan block J(k+1) and a matrix B with w(B) <= cos(pi/(k + 2)), and (3) if B is a nonnegative matrix with its real part (permutationally) irreducible, then w(A circle times B) = parallel to A parallel to w(B), if and only if either p (A) = infinity or n (B) = p (A) < infinity and B is permutationally similar to a block-shift matrix [GRAPHICS] with k = n (B), where p (A) = sup{l >= 1 : parallel to A(l)parallel to = parallel to A parallel to(l)} and n (B) = sup{l >= 1 : B-l not equal 0}.
Getting Grandma Online: Are Tablets the Answer for Increasing Digital Inclusion for Older Adults in the US?
(2015-10-03)
Tsai, Hsin-yi Sandy
;
Shillair, Ruth
;
Cotten, Shelia R.
;
Winstead, Vicki
;
Yost, Elizabeth
Using information and communication technologies (ICTs) can improve older adults\' quality of life. ICT use is associated with decreased feelings of loneliness and depression, along with increased feelings of independence and personal growth. However, limited access and low technological self-efficacy are key reasons why some groups, especially older adults, are excluded from being fully engaged in the digital world. In this study, we focus on older adults\' technological self-efficacy, which is related to their actual use of technology and the second level digital divide. Specifically, we examine: (a) how older adults decide to use a new technology, tablet computers; (b) how they conquer the barrier of technological self-efficacy through using tablets; and (c) the impacts of using this new technology in their lives. Twenty-one in-depth interviews were conducted with older adults residing in independent living communities in a medium-sized city in the Deep South region of the United States. Observational and enactive learning played important roles for older adults in using tablets. Seeing others use tablets, getting recommendations from family members, or having tablets given to them were the primary reasons they started to use tablet computers. The ease of use feature of tablets helped solve the problem of lacking technological self-efficacy. Using tablets helped increase a sense of connectedness. Tablet computers may be one way to increase digital inclusion among older adults.
科技的樂器　電子音樂
(2015-10-04)
林儒均
;
Department of Communication and Technology
;
傳播與科技學系
隨著科技而變化的電子音樂，不僅僅只是電音舞曲，而是一種獨特、多變且多元的音樂。
前因後果　探索雲圖
(2015-10-04)
許凱智
;
Department of Communication and Technology
;
傳播與科技學系
分析電影【雲圖】不同的說故事方法，讓觀眾理解說故事者的想要闡發的道理。
場邊也精采　最佳第十人
(2015-10-04)
呂安文
;
Department of Communication and Technology
;
傳播與科技學系
棒球並不是只有場中的比賽，球迷大呼口號、啦啦隊勁歌熱舞等場邊文化也是構成職棒的重要因素。
隨處可見　臺灣的機車文化
(2015-10-04)
蕭泳
;
Department of Communication and Technology
;
傳播與科技學系
機車作為臺灣的特色文化，但機車密度過高也成為臺灣需要解決的問題之一。
文創不文創　松菸文創
(2015-10-04)
周書賢
;
Department of Communication and Technology
;
傳播與科技學系
在文化創意產業受到重視的現在，將目標設為創意基地的松菸文創園區卻讓人懷疑其對文創的貢獻。
阿德勒　面對自我的勇氣
(2015-10-04)
林湘芸
;
Department of Communication and Technology
;
傳播與科技學系
《被討厭的勇氣》透過年輕人和哲學家的對話，講述阿德勒心理學的思想。
科技雕塑下的新媒體時代
(2015-10-04)
鄭淇云
;
Department of Communication and Technology
;
傳播與科技學系
現今的社會講求時效性，因此，新聞播送的方式變得更迅速、內容也變得更多元化，以吸引閱聽人的目光。
那些年　初戀的少女時代
(2015-10-04)
蔡家寧
;
Department of Communication and Technology
;
傳播與科技學系
每個人的青春回憶不可能重疊，但我們總會在電影中，找到自己熟悉的味道。
簡單餐車烹煮幸福人生
(2015-10-04)
許心如
;
Department of Communication and Technology
;
傳播與科技學系
落魄大廚凱爾遭逢失意後重新檢視人生，開設快餐車找回初衷與最珍視的親情，為觀眾呈上美好的視覺饗宴。
完美拉鋸戰　理性穿正裝
(2015-10-04)
胡浣莊
;
Department of Communication and Technology
;
傳播與科技學系
男性正裝穿搭的權威，Jimmy最喜歡的風格為混和粗獷的義式性感風，強調表格的運用可幫助規劃穿搭方向。
寂寞夥伴　我的音樂之路
(2015-10-04)
吳和謙
;
Department of Communication and Technology
;
傳播與科技學系
天下沒有不散的筵席。在因緣際會之下，我接觸了流行音樂，也成為我如影隨形的莫逆之交。
我與我的繪圖好夥伴
(2015-10-04)
吳昀蒨
;
Department of Communication and Technology
;
傳播與科技學系
講述我和黑美人的故事。雖然只是一塊繪圖板，但它卻是陪伴我畫圖的最好夥伴。
防彈少年團　引爆韓國樂壇
(2015-10-04)
黃美恩
;
Department of Communication and Technology
;
傳播與科技學系
韓國嘻哈男子團體防彈少年團，用說出自己的故事，走自己的音樂路。
總編輯的話
(2015-10-04)
麻愷晅
;
Department of Communication and Technology
;
傳播與科技學系
本期為二二一期，共三十三篇稿件，種類豐富，其中以文化現象和影評居多。
禁忌之愛　找回迷失自我
(2015-10-04)
黃琪
;
Department of Communication and Technology
;
傳播與科技學系
《外遇的女人》描述琳達如何從婚姻的背叛中重生，帶領讀者找回迷失的愛。
為什麼凌晨四點睡
(2015-10-04)
曾煥富
;
Department of Communication and Technology
;
傳播與科技學系
總會有一首歌，在對的時間出現，貼著心，唱一整夜。
那些年　我與我的快樂夥伴
(2015-10-04)
李宗諺
;
Department of Communication and Technology
;
傳播與科技學系
輕鬆敘述宿舍的生活和室友們的小故事。
創客文化　未來新趨勢
(2015-10-04)
王聖安
;
Department of Communication and Technology
;
傳播與科技學系
引領未來潮流的創客文化，探討其起源、發展和未來。