Results 61 to 70 of about 66,871 (246)

The effect of tube diameter on vertical two-phase flow regimes in small tubes [PDF]

, 2006
Flow boiling flow patterns in four circular tubes with internal diameters of 1.10, 2.01, 2.88 and 4.26 mm were investigated in the present project. The experiments were conducted in vertical upward two-phase flow using R134a as the working fluid.
Chen, L, Karayiannis, TG, Tian, YS
core  

Ensembles of probability estimation trees for customer churn prediction [PDF]

, 2010
Customer churn prediction is one of the most, important elements tents of a company's Customer Relationship Management, (CRM) strategy In tins study, two strategies are investigated to increase the lift. performance of ensemble classification models, i.e
A. Lemmens, A. Prinzie, B. Larivière, D. Cieslak, E. Bauer, F. Provost, F. Provost, J. Burez, J.J. Rodríguez, L. Breiman, L.I. Kuncheva, M.J. Shaw, N. Glady, P. Panov, R. Bryll, R. Quinlan, S. Clemençon, T.K. Ho, W. Reinartz, Y. Freund, Y.S. Kim   +20 more
core   +3 more sources

Invasive goldfish trigger a regime shift in experimental lake ecosystems of varying trophic state

Journal of Animal Ecology, EarlyView.
The pet trade distributes exotic animals around the globe that enrich human lives. However, some pets become pests when released into the wild. This study provides experimental evidence that goldfish will negatively affect native freshwater organisms and ecosystems.
William D. Hintz, Hannah Barrett, Rick A. Relyea   +2 more
wiley   +1 more source

A New Model for the Calculation of Customer Life-time Value in Iranian Telecommunication Companies [PDF]

International Journal of Management, Accounting and Economics, 2015
In this paper, we proposed a new model to evaluate a customer's lifetime value, considering non-financial elements such as the customer’s churn probability, cooperation capability, willingness to refer, willingness to recommend, and innovation. We tested
Reza Samizadeh, Hamidreza Koosha, Soudabeh Zangeneh, Sahar Vatankhah   +3 more
doaj  

An Analytical Study of a Structured Overlay in the presence of Dynamic Membership [PDF]

, 2005
In this paper, we present a complete analytical study of dynamic membership (aka churn) in structured peer-to-peer networks. We use a master-equation-based approach, which is used traditionally in non-equilibrium statistical mechanics to describe ...
Aurell, Erik, El-Ansary, Sameh, Haridi, Seif, Krishnamurthy, Supriya   +3 more
core   +1 more source

Shuffling with a Croupier: Nat-Aware Peer-Sampling [PDF]

, 2012
Despite much recent research on peer-to-peer (P2P) protocols for the Internet, there have been relatively few practical protocols designed to explicitly account for Network Address Translation gateways (NATs).
Dowling, Jim, Payberah, Amir H.
core   +3 more sources

Churn Possibilities and Impossibilities [PDF]

, 2019
Churn is processes joining or leaving the peer-to-peer overlay network. We study handling of various churn variants. Cooperative churn requires leaving processes to participate in the churn algorithm while adversarial churn allows the processes to just quit. Infinite churn considers unbounded number of churning processes throughout a single computation.
Foreback, Dianne, Nesterenko, Mikhail, Tixeuil, Sébastien   +2 more
openaire   +2 more sources

Student Income Support and Participation in Higher Education: A Cohort Analysis

Australian Economic Review, EarlyView.
ABSTRACT Background The 2008 Bradley Review introduced major reforms to Australian higher education, including a demand‐driven funding system and changes to student income support, aimed at expanding participation and improving equity outcomes. Aims This study examines how student income support receipt and higher education participation evolve across ...
Deborah A. Cobb‐Clark, Hayley Fisher, Sura Majeed   +2 more
wiley   +1 more source

A Comprehensive Evaluation of Machine Learning and Deep Learning Models for Churn Prediction

Information
Churn prediction has become one of the core concepts in customer relationship management within the insurances, telecom, and internet service provider industries, which is essential in customer retention.
Nabil M. AbdelAziz, Mostafa Bekheet, Ahmad Salah, Nissreen El-Saber, Wafaa T. AbdelMoneim   +4 more
doaj   +1 more source

An analytical framework for the performance evaluation of proximity-aware structured overlays [PDF]

, 2008
In this paper, we present an analytical study of proximity-aware structured peer-to-peer networks under churn. We use a master-equation-based approach, which is used traditionally in non-equilibrium statistical mechanics to describe steady-state or ...
Ardelius, John, Krishnamurthy, Supriya
core   +1 more source