BACKGROUND Low phosphorus (P) availability is a major constraint to soybean growth and production. Developing P-efficient soybean varieties that can efficiently utilize native P and added P in the soils would be a sustainable and economical approach to soybean production. SCOPE This review summarizes the possible mechanisms for P efficiency and genetic strategies to improve P efficiency in so...

This paper presents the technique to dynamically enhance the power efficiency of PWM class-D amplifier over a wide range of modulation indexes. The power stage of amplifier is segmented into several small stages and selectively enabled according to the power demand (i.e. modulation indexes). The capability of power delivery is dynamically adjusted to minimize the power loss in case of different...

ACKNOWLEDGMENT I would like to express my sincere and deep appreciation to my major professor and academic advisor, Dr. Un-Ku Moon, for his encouragement and guidance throughout the project. I am honored to have had the opportunity to work under his supervision. Without his help and support, this thesis would not have been possible. I would like to express my appreciation to Dr. Gabor C. Temes ...

This paper discusses the perspectives of using a wake-up receiver (WUR) in wireless body area network (WBAN) applications with event-driven data transfers. First we compare energy efficiency between the WUR-based and the duty-cycled medium access control protocol based IEEE 802.15.6 compliant WBAN. Then, we review the architectures of state-of-the-art WURs and discuss their suitability for WBAN...

In this study an envelopment form of NDEA model is used for efficiency measurement of bank branches. So, a slack based NDEA model introduced by Tone and Tsutsui (SBM-NDEA) is nominated for its mathematical model. But according to the new categorization of the efficiency measurement factors introduced in this paper and also regarding some previous reviews on SBM-NDEA model, the model will be mod...

Since the Ministry of Construction decided the development of the effective aerator for oxidation ditch (OD) process as the theme of construction technique in 1988, the application of OD process for small scale domestic waste water treatment plant have been increasing in Japan. Authors were engaged in the development of down draft aerator, planned several actual plants and experienced the opera...

Achievement of diverse economic, social, environment conservation etc. goals development greatly depends on the specific system of governance in different countries, industries, regions, communities, etc. [1-7]. Having in mind the importance of agrarian sector (in terms of employed resources, contribution to individuals and social welfare, positive and/or negative impacts on environment, etc.),...

BACKGROUND The goal of this study was to determine the length of operative time and its effect on surgeon productivity with the use of intraoperative digital specimen mammography (IDSM) compared to standard specimen mammography (SSM). METHODS A retrospective chart review was performed on 344 consecutive patients from a single breast surgeon from 2003 to 2010. Operative time was compared betwe...

Feasibilities of heat and cold storage technologies for vehicles were discussed for improvement of vehicle fuel efficiency. Energy performance of a plug-in cold thermal energy storage system, in which ice slurry is produced at a stationary chiller and charged into a tank in a vehicle for cabin and cargo cooling, was discussed. Energy balance of the plug-in system was compared with onboard heat ...