Changing Nature of Copyright Law: Impact on Information Access (ความเปลี่ยนแปลงในกฎหมายลิขสิทธิ์: ผลกระทบต่อการเข้าถึงสารนิเทศ)
ในขณะทกฎหมายลขสทธไดใหสทธเดดขาดแกผทรงสทธเพอปองกนการใชทไมไดรบการอนญาต กฎหมายลขสทธกไดใหขอยกเวนและขอจำกดในลขสทธ ซงเรยกกนโดยทวไปวา “การใชงานโดยธรรม” แกสาธารณชนเพอลดการใชสทธเดดขาดของผทรงสทธ   จากการเปลยนแปลงทรวดเรวของเทคโนโลย  จงทำใหเกดผลกระทบตอความสมดลในผลประโยชนระหวางผทรงสทธและผใชสทธ  ผทรงสทธไดสรางเครองมอปองกนทางเทคนค หรอ Digital Right Management (DRM) ขน   เพอปกปองงานของตนจากการเขาถงโดยไมไดรบอนญาตในสภาวะแวดลอมทเปนดจทล  อยางไรกด  DRM ไดกลายเปนประเดนททาทายตอวตถประสงคหลกของหลกการใชงานโดยธรรม โดยเฉพาะในเรองการเขาถงสารนเทศของสถาบนการศกษา  หองสมด  และสงคมสารนเทศและความร Copyright law grants the right holders the exclusive rights in order to prohibit the unauthorized use on one hand and on the other hand, it provides the public the exceptions to and limitations on copyright, as generally called “fair use”, in order to cut down the right holders’ exclusive rights. Due to the rapid change of technology, the balancing interests between the right holders and users are affected. The right holders create a technical protection device, Digital Right Management (DRM), to control unauthorized access in the digital environment. Nevertheless, DRM becomes a challenging issue for the core purpose of the fair use doctrine, especially information access of educational institutions, libraries, and information and knowledge society.
Every Library’s Nightmare? Digital Rights Management, Use Restrictions, and Licensed Scholarly Digital Resources
This study explored use restrictions found in licensed scholarly resources from the fields of history/art history, engineering, and health sciences. The analysis developed a framework of use restrictions that distinguishes between soft restrictions—which discourage use—and hard restrictions—which strictly prevent use. Soft restrictions include: extent of use, obfuscation, omission, amalgamation, frustration, and warning. The study concludes that these soft restrictions are relatively common in licensed scholarly resources. Further, while hard restrictions are less common, they are not unknown. The study questions whether librarians should be doing more to challenge use restrictions.
Multi-directional spatial error concealment using adaptive edge thresholding
In this paper, a new method for spatial concealment of missing areas in image and video signals transmitted over error prone infrastructures, is presented. The concealment process is performed in three steps. First, a novel technique is used to estimate the significant edges of missing areas after performing a directional edge analysis on the correctly received neighboring blocks of the missing areas. This technique uses the moments of the neighboring edge magnitudes to obtain an adaptive threshold for rejecting non-significant directions. Second, based on the predicted significant directions, an approximation is obtained for each missing pixel. Finally, for each pixel, we compute a weighted average by using two edge correspondence measures as weighting factors. Moreover, the adaptive thresholding of the edges let us include as many edges as necessary in the interpolation process. Experiments show that the proposed method outperforms the previous state of the art methods based on both subjective and objective measures.