Changes in travelers’ booking habits and the evolution of technology have come to threaten existence traditional travel agents (TAs). However, cruise industry still relies heavily on TAs as its main distribution channel. A qualitative study was conducted investigate networks, relationships, power between companies using a triangulation method via tourism supply chain model. Principal–agent (P-A...

In randomized studies, treatment comparisons conditional on intermediate post-randomization outcomes using standard analytic methods do not have a causal interpretation. An alternate approach entails treatment comparisons within principal strata defined by the potential outcomes for the intermediate outcome that would be observed under each treatment assignment. In this paper, we develop method...

the present paper is devoted to a new critical state based plasticity model able to predict drained and undrained behaviour of granular material. it incorporates a bounding surface plasticity model describing in multilaminate framework to capitalize on advantages of this mathematical framework. most of the models developed using stress/strain invariants are not capable of identifying the parame...

A series of glycan-coated quantum dots were prepared to probe the effect of glycan presentation in intracellular localization in HeLa and SV40 epithelial cells. We show that glycan density mostly impacts on cell toxicity, whereas glycan type affects the cell uptake and intracellular localization. Moreover, we show that lactose can act as a "Trojan horse" on bi-functionalized QDs to help intrace...

In causal inference, principal stratification is a framework for dealing with posttreatment intermediate variable between treatment and an outcome. this framework, the strata are defined by joint potential values of variable. Because not fully observable, effects within them, also known as effects, identifiable without additional assumptions. Several previous empirical studies leveraged auxilia...