Radiative entropy production

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76465/1/AIAA-9535-710.pd

Managing Public Innovation: Toward Developing A New Model For Public Organizations

Models of innovation take a number of forms, each of which is helpful in highlighting particular aspects and enabling better understanding and practice. There are some models are designed for public organizations in the literature. However, they are not appropriate for Turkish public organizations because dynamics of the innovation process such as drivers, sources, and barriers show significant differences among different regions. In addition, in Turkey, no comprehensive technological innovation model has emerged for public organizations. The research study attempts to address this gap through the development of a new technological innovation model for Turkish public sector. Ongoing innovation projects that are performed by public organizations are analyzed to identify technological innovation process. In the scope of the study total twenty public organizations; all of the ministries and pioneer public organizations that perform technological innovation projects are analyzed. Case study is used as a research strategy and interviews, documentation, and observations are used as data collection methods. In accordance with the findings achieved by the analysis, technological innovation process is identified. Moreover stakeholders of the process, inputs and outputs of the process are identified. The results of the study will light the way for innovation projects and enable successful management of innovation process in public organizations

Numerical investigations of planar solidification of an undercooled liquid

We investigate evolution of a planar interface during unstable solidification of a pure undercooled liquid between two parallel plates. The governing equations are solved using a front tracking/finite difference technique that allows discontinuous material properties between the phases and interfacial anisotropy. The simulations produce some of the futures of the dendritic solidification which are in good qualitative agreement with the works of the previous investigators. The effects of the physical parameters on the crystal growth and interface instability are also examined. © 1997 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87387/2/629_1.pd

On interface dynamics

An intuitive study is presented for unstable interfacial waves. The maximum wavelength obtained for the most rapid unstable growth is shown to have a universal part which also characterizes the isotropic scales of buoyancy-driven turbulence. © 2000 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70336/2/PHFLE6-12-5-1244-1.pd

Entropy production in radiation-affected boundary layers

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76157/1/AIAA-1988-2640-236.pd

A Novel On-chip Three-dimensional Micromachined Calorimeter with Fully Enclosed and Suspended Thin-film Chamber for Thermal Characterization of Liquid Samples

A microfabricated calorimeter (μ-calorimeter) with an enclosed reaction chamber is presented. The 3D micromachined reaction chamber is capable of analyzing liquid samples with volume of 200 nl. The thin film low-stress silicon nitride membrane is used to reduce thermal mass of the calorimeter and increase the sensitivity of system. The μ-calorimeter has been designed to perform DC and AC calorimetry, thermal wave analysis, and differential scanning calorimetry. The μ-calorimeter fabricated with an integrated heater and a temperature sensor on opposite sides of the reaction chamber allows to perform thermal diffusivity and specific heat measurements on liquid samples with same device. Measurement results for diffusivity and heat capacitance using time delay method and thermal wave analysis are presented

Leaks in the IT Workforce Pipeline: Investigating IT Students and Their Plans to Leave or Stay in the IT Profession

To remain competitive in the fast-paced information technology (IT) industry, companies will have to rely heavily on the next generation of IT professionals. Yet we know little about future IT professionals’ career plans: Are contemporary career attitudes tempting IT students to leave the IT profession? And can early professional identification prevent potential exit plans? Based on a survey with 180 IT students, we investigate how their turnaway intention from IT is shaped by their boundaryless career attitudes (BCAs), namely the desire for interdisciplinary work and the desire for inter-organizational mobility, and how professional identification influences this relationship. We find divergent effects of the two BCA forms on turnaway intention. In addition, we find a reducing effect of professional identification on turnaway intention, but also surprising interaction effects with BCAs. Our findings indicate that IT students with different BCAs follow distinct career paths across organizations and professions. Our study contributes to research on IT careers and provides guidance for organizations on how to employ future, boundaryless IT professionals

Radiative deformation

An infinitesimal change δQδQ in heat flux Q is shown, in terms of entropy flux Ψ=Q/T,Ψ=Q/T, to have two parts, δQ=TδΨ+ΨδT.δQ=TδΨ+ΨδT. The first part being the thermal displacement and the second part being the thermal deformation. Only the second part dissipates into internal energy and generates entropy. Thermodynamic arguments are extended to transport phenomena. It is shown that the thermal part of the rate of local entropy generation is related to the local rate of thermal deformation by s′′′=−ψi/T(∂T/∂xi),s′′′=−ψi/T(∂T/∂xi), where ψi=qi/T,ψi=qi/T, ψiψi being the rate of entropy flux vector, and qiqi the rate of heat flux vector. The part of this generation related to radiation is illustrated in terms of an example. © 2000 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/70807/2/JAPIAU-87-6-3093-1.pd

Entropy production in boundary layers

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/77333/1/AIAA-197-774.pd