The synthesis of 2',2'-difluoro KRN7000 is described. In vivo evaluation demonstrates that this fluorinated glycolipid induces CD1d-dependent TCR activation of NKT cells, with a bias towards Th2 cytokine production.

There is now an increased understanding of the need for realistic link layer models in the wireless sensor networks. In this paper, we have used mathematical techniques from communication theory to model and analyze low power wireless links. Our work provides theoretical models for the link layer showing how Packet Reception Rate vary with Signal to Noise Ratio and distance for different modula...

We present a stochastic two-population model that describes the migration and growth of semisedentary foragers and sedentary farmers along a river valley during the Neolithic transition. The main idea is that random migration and transition from a sedentary to a foraging way of life, and backwards, is strongly coupled with the local crop production and associated degradation of land. We derive ...

We model the economic incentives surrounding opium crop production in Afghanistan. Specifically, we examine the impact of eradication policies when opium is used as a means of obtaining credit, and when the crops are produced in sharecropping arrangements. The analysis suggests that when perfect credit markets are available, an increased risk of eradication will lead to less land being allocate...

2 Architecture In this paper, firstly we discuss the architecture of a flexible automated production system under which all components are well-modulized. Then, a solution, EMFAK(Event-driven Multi-tasking Flexible Automation Kernel) is proposed to speed up the construction of system control. At last, a flexible assembly system using EMFAK is described to show how to apply it to a real flexible...

Comment on 'Optimal inventory replenishment policy for the EPQ model under trade credit derived without derivatives' Jinn-Tsair Teng a; S. K. Goyal b a Department of Marketing and Management Sciences, The William Paterson University of New Jersey, Wayne, New Jersey 07470-2103, USA b Department of Decision Sciences & MIS, John Molson School of Business, Concordia University, Montreal, Quebec, Ca...

Geoengineering has been proposed to stabilize global temperature, but its impacts on crop production and stability are not fully understood. A few case studies suggest that certain crops are likely to benefit from solar dimming geoengineering, yet we show that geoengineering is projected to have detrimental effects for groundnut. Using an ensemble of crop-climate model simulations, we illustrat...

Manna and Chaudhuri (Eur. J. Oper. Res. 171(2):557–566, 2006) presented a production-inventory system for deteriorating items with demand rate being a linearly ramp type function of time and production rate being proportional to the demand rate. The two models without shortages and with shortages were discussed. Both models were studied assuming that the time point at which the demand is stabil...

Using cinematography to identify the drive and recovery phases in wheelchair racing, it has been reported that the drive phase was approximately 33% of each propulsive cycle time, with remaining time devoted to the recovery phase. In this study, an electronic timing device has been developed to accurately measure the drive phase time and recovery phase time in each cycle of wheelchair racing. S...