This paper presents a frequency-tunable bandpass filter with constant absolute bandwidth and improved linearity. The proposed resonator is composed of an open-ended transmission line with back-to-back varactor diodes loaded at one end. The back-to-back varactor diodes are used to enhance the linearity of the filter, which is better than that of the single varactor counterparts. A mixed electric...

Decision trees have been well studied and widely used in knowledge discovery decision support systems. One of the applications binary integer programming to form or making is knapsack problem. The problem an that involves only one constraint. generally illustrated with a bag item. be solved maximize price goods certain capacity can loaded by too. In solving problem, it done directly. this paper...

OBJECTIVE The aim of this study was to analyze the biomechanical alterations during unilateral backpack carriage in adolescents and to compare the kinematic parameters of the loaded and unloaded sides. METHODS Twenty adolescents (mean age: 13 ± 1.2 years) were assessed during walking with no backpack and with a backpack on one shoulder. The kinematic parameters of a gait at a self-selected sp...

We study electronic bidding and contracting for nonstorable goods such as electric power using multi-GA agents and game theoretical approaches. In this framework, there is a long-term contract market as well as a back-stop spot market. Seller agents bid into an electronic bulletin board their contract offers in terms of price or capacity, while Buyer agents decide how much to contract with Sell...

Cluster-based server architectures combine good performance and low cost, and are commonly used for applications that generate heavy loads. Essentially, a cluster-based server consists of a front-end dispatcher and several back-end servers. The dispatcher receives incoming requests, and then assigns them to back-end servers, which are responsible for request processing. The many benefits of clu...

Some analysts and business executives are becoming concerned that recent increases in the consumer debt burden, defined as the level of consumer debt relative to ability to repay, may foreshadow an economic slowdown. Higher debt increases the risk that a household may experience financial distress in the event of an adverse economic shock, such as the loss of a job or large uninsured medical ex...

Counterfeit pharmaceutical products are a real threat to the health of patients, and to the reputation and commercial success of legitimate producers of genuine products. NIR chemical imaging provides a rapid method for detecting and comparing suspected counterfeit products with no sample preparation. With appropriate choice of operating conditions, multiple samples can be compared simultaneous...

We consider a (not necessarily complete) continuous-time security market with semimartingale prices and general information filtration. In such a setting, we show that the first-order conditions for optimality of an agent maximizing a ‘smooth’ (but not necessarily additive) utility can be formulated as the martingale property of prices, after normalization by a ‘state-price’ process. The latter...