Digital Commons Network^™

Distributed Digital Forensics On Pre-Existing Internal Networks, Jeremiah Jens Nielsen

Open Access Theses

Today's large datasets are a major hindrance on digital investigations and have led to a substantial backlog of media that must be examined. While this media sits idle, its relevant investigation must sit idle inducing investigative time lag. This study created a client/server application architecture that operated on an existing pool of internally networked Windows 7 machines. This distributed digital forensic approach helps to address scalability concerns with other approaches while also being financially feasible. Text search runtimes and match counts were evaluated using several scenarios including a 100 GB image with prefabricated data. When compared to FTK 4.1, a …

Text-Based Phishing Detection Using A Simulation Model, Gilchan Park

Open Access Theses

Phishing is one of the most potentially disruptive actions that can be performed on the Internet. Intellectual property and other pertinent business information could potentially be at risk if a user falls for a phishing attack. The most common way of carrying out a phishing attack is through email. The adversary sends an email with a link to a fraudulent site to lure consumers into divulging their confidential information. While such attacks may be easily identifiable for those well-versed in technology, it may be difficult for the typical Internet user to spot a fraudulent email.

The emphasis of this research …

Community As Client: Defining Social Design As A Means Of Designing For Good, Ryan Kough Gibboney

Open Access Theses

Approaching the design field today is a significant quantity of societal needs that have potential to be resolved through systematic design initiatives. There is increasing curiosity around the designer's role and responsibility within society; a belief that designers have the power to make social change happen in their own communities. Many neighborhoods with driven community members and professional designers are working together to turn to design as problem solving, as social activism on a local scale. But how do we make this sustainable?

To create a systematic change, designers must rethink the processes in which they view the problems and …

The Attachment-Satisfaction Relationship On Facebook: Emotional Intelligence And Conflict, Jarred Michael Caldwell

Open Access Dissertations

Caldwell, J. M., Ph.D. Purdue University, February 2013. The Attachment-Satisfaction Relationship on Facebook: Emotional Intelligence and Conflict. Major Professor: M. Carole Pistole, Ph.D.

Because of the unique interpersonal nature of social networking sites, as well as the vast number of people using them, this study examines how attachment differences and other factors, including social networking site romantic conflict behavior and emotional intelligence, link to romantic relationship satisfaction. College students who were in romantic relationships and users of social networking sites (N = 274), completed the following measures: (a) the Experiences in Close Relationship Scale-Short Form (ECR-S; Wei, Russell, Mallinckrodt, & …

Fate Of 17Α-Estradiol, 17Β-Estradiol, And Estrone In Agricultural Soils And Sediments, Michael L. Mashtare Jr

Open Access Dissertations

The shift to concentrated animal production facilities and increasing rural-urban migration has increased the localized land application of nearly 1 billion tons of manure and biosolids annually. Although these applications provide nutrients and contribute to soil tilth, they also serve as a source for an estimated 49 tons of the natural manure-borne estrogens, 17α-estradiol (17α-E2), 17β-estradiol (17β-E2), and estrone (E1). While these estrogens are critical to endocrine systems, the low concentrations observed in the environment can disrupt endocrine function in non-target organisms, e.g., altering secondary sex characteristics which can lead to changes in wildlife communities.

Research presented here focuses on …

"I Thought I'D Put That In To Amuse You": Tutor Reports As Organizational Narrative, Rita Malenczyk

The Writing Center Journal

No abstract provided.

Solution Combustion Synthesis Of Cobalt Oxide For Use As A Catalyst Precursor In The Hydrolysis Of Sodium Borohydride, Teandra Leigh Pfeil

Open Access Theses

Solution combustion synthesized (SCS) cobalt oxide (Co₃O₄) powder has been studied as a catalyst precursor for the hydrolysis of sodium borohydride (NaBH₄). Synthesis is completed in less than two minutes and results indicate SCS is capable of reproducibly synthesizing 98.5-99.5% pure Co₃O₄ nano-foam materials. SCS materials demonstrate an as-synthesized specific surface area of 24 m²/g, a crystallite size of 15.5 nm, and fine surface structures on the order of 4 nm. Despite having similar initial surface areas and sample purities, SCS-Co₃O₄ outperforms commercially available Co_{3 …}

Technological Drivers In Data Centers And Telecom Systems: Multiscale Thermal, Electrical, And Energy Management, S V. Garimella, T. Persoons, J. Weibel, L.-T. Yeh

CTRC Research Publications

including thermal, electrical and energy management challenges, based on discussions at the 2nd Workshop on Thermal Management in Telecommunication Systems and Data Centers in Santa Clara, California, on April 25–26, 2012. The relevance of thermal management in electronic systems is reviewed against the background of the energy usage of the information technology (IT) industry, encompassing perspectives of different sectors of the industry. The underlying drivers for progress at the business and technology levels are identified. The technological challenges are reviewed in two main categories – immediate needs and future needs. Enabling cooling techniques that are currently under development are also …

Identifying And Developing Students’ Ability To Reason With Concepts And Representations In Biology, Trevor R. Anderson, Konrad J. Schönborn, Lynn Du Plessis, Abindra S. Gupthar, Tracy L. Hull

PIBERG Publications

External representations (ERs) and their constituent symbolism are of enormous pedagogical value to instructors, especially in the teaching of the submicroscopic world of biology, inherent in disciplines such as biochemistry, immunochemistry, molecular biology and physiology. Whereas symbolic conventions are rigorously applied in physics and chemistry to enhance learning, this is not always true in biology where inappropriate use of symbolic language often leads to confusing ER designs and a range of conceptual, visual, and reasoning difficulties. In this chapter, we present a synthesis of research conducted by our group within these important areas of biology education. We commence by describing …

Development Of A Game‐Based‐Learning App For Exposing Students To Chemistry And Life Science As A Research Endeavor, Thanuci Silva, Eduardo Galembeck, Nancy Pelaez, Trevor R. Anderson

PIBERG Presentations

We have developed a gamified Virtual Learning Environment (VLE), called 3DClass, to deliver homework to chemistry and life science students through a user-­‐friendly and enjoyable interface. Homework from four courses was delivered using the 3DClass, a computer app that acts as an interface between Moodle and the Apple Game Center. This App allows users to play while learning or to learn while playing. The results show that this App can be used in a flexible manner with designs that can be customized to courses with different characterisOcs, such as with online collaboraOon or face-­‐to-­‐face lectures, and for parOcipant numbers that …

Engineering Childhood: Knowledge Transmission Through Parenting, Brianna L. Dorie, Monica Cardella

School of Engineering Education Graduate Student Series

Parents are the front line when it comes to the education and development of their children, and are important agents in the educational achievement of their child in a formal setting (Yun et al, 2010; Catsambis, 1995; Fan & Chen, 2001; Seyfried & Chung,2003). Parents purchase toys, read books, take children to museums, and interact with their child on a daily basis. Particular background with a subject, such as science or engineering, can affect the parent’s strategies for educating their children and subsequent understanding of main concepts (Yun et al., 2010). However, many adults and children alike have a minimal …

Critical Literacy And Intercultural Awareness Through The Reading Comprehension Strategy Of Questioning In Business Language Education, Per Urlaub

Global Business Languages

This article is situated at the nexus between critical thinking, literacy, and intercultural awareness, and its goal is to extend the curricular and methodological repertoire of business language programs and instructors. To that end, the article introduces an instructional technique for business language classes that will elevate the learners’ level of criticality toward second language texts. The approach is based on the reading comprehension strategy of self-generating questions. Instead of responding to questions raised by the instructor or the textbook, students self-generate questions vis-à-vis the assigned texts. After providing a working definition of critical literacy and an outline of previous …

The Global Case Studies Textbook Project: Faculty-Student Research Collaboration In The Business French Classroom, Steven J. Sacco, Dakota E. Senne

Global Business Languages

Despite the need for a new generation of entrepreneurs, higher education continues to train new cadres of employees while neglecting entrepreneurship as a viable career path. In this article, the senior author (a Business French instructor and an entrepreneur) and the junior author (an International Business undergraduate) describe an entrepreneurial class project that culminated in a published book of multimedia Business French (BF) case studies. The Business French class, French 423—divided into five research teams—researched, designed, and created five case studies each in English and French. The cases, published using Articulate Storyline, included a one-page case statement, YouTube videos depicting …

Systematic Identification Of Tor Downstream Effectors Using Random-Walks On The Yeast Interactome, Shahin Mohammadi, Ananth Grama, Shankar Subramaniam

Department of Computer Science Technical Reports

No abstract provided.

Gis And Data Curation Librarianship: Mobile Dissemination Of Gis Resources, Benjamin D. Branch, Nicole Kong, Michael Fosmire, Antti M. Rousi

Libraries Faculty and Staff Presentations

The Purdue University Libraries’ GIS department is working to advance geospatial services campus wide. In addition to conducting data curation profiles research in an IRB approved manner, we aim to validate new ways and means to make GIS services viable for large and diverse student and faculty community of over 40,000 students, all departments and along interdisciplinary boundaries. Here is a prototype of our mobile dissemination GIS of services and development in collaboration with Aalto University Library. Here, we discuss in a 3-fold manner how the GIS Dept. has prototyped a means of mobile GIS knowledge dissemination towards the development …

The Anisotropic Hyperelastic Biomechanical Response Of The Vocal Ligament And Implications For Frequency Regulation: A Case Study, Jordan E. Kelleher, Thomas Siegmund, Mindy Du, Elhum Naseri, Roger W. Chan

School of Mechanical Engineering Faculty Publications

No abstract provided.

Greenpatch® - Cold Mix Asphalt, Purdue Ect Team

ECT Fact Sheets Archive

GreenPatch® is environmentally friendly cold asphalt that is a direct replacement for traditional cold patch in repairing asphalt pavements. This revolutionary breakthrough in the cold asphalt industry contains no petroleum based softeners such as diesel, toluene, kerosene, and naphthalene found in conventional cold asphalt that pose serious threats to human health and the environment.

Evaporative Heat Transfer From An Electrowetted Liquid Ribbon On A Heated Substrate, Chris P. Migliaccio, S V. Garimella

CTRC Research Publications

Evaporation of narrow water ribbons (of 5 and 7 lL volume) formed on a heated surface is investigated. Chemical and structural patterning of a silicon substrate is employed to fabricate a hydrophilic stripe that bisects hydrophobic pillar arrays of varied geometric roughness. Electrical heating of a 100 nm titanium layer on the back side of the device provides a constant heat flux. In the absence of electrical actuation, water introduced onto the substrate takes a bulging ribbon shape that is constrained to the immediate vicinity of the hydrophilic stripe. Electrowetting of the water ribbon spreads it into the hydrophobic pillar …

Cyclic Operation Of Molten-Salt Thermal Energy Storage In Thermoclines For Solar Power Plants, Z. Yang, S V. Garimella

CTRC Research Publications

The cyclic operation of molten-salt thermal energy storage thermoclines for solar thermal power plants is systematically investigated. A comprehensive, two-temperature model is first developed for the cyclic operation of a thermocline operating with a commercially available molten salt as the heat transfer fluid and quartzite rock as the filler. Volume-averaged mass and momentum equations are employed, with the Brinkman–Forchheimer extension to the Darcy law used to model the porous-medium resistance. Energy equations for the molten salt and the filler are coupled by an interstitial Nusselt number representing the heat transfer between the phases. A finite-volume approach is employed to solve …

Recent Advances In Vapor Chamber Transport Characterization For High Heat Flux Applications, J. A. Weibel, S V. Garimella

CTRC Research Publications

Owing to their high reliability, simplicity of manufacture, passive operation, and effective heat transport, flat heat pipes and vapor chambers are used extensively in the thermal management of electronic devices. The need for concurrent size, weight, and performance improvements in high-performance electronics systems, without resort to active liquid-cooling strategies, demands passive heat spreading technologies that can dissipate extremely high heat fluxes from small hot spots. In response to these daunting application-driven trends, a number of recent investigations have focused on the design, characterization, and fabrication of ultra-thin vapor chambers for proximate heat spreading away from these hot spots. The predominant …

Nucleate Boiling From Smooth And Rough Surfaces--Part 1: Fabrication And Characterization Of An Optically Transparent Heater-Sensor Substrate With Controlled Surface Roughness, J. P. Mchale, S V. Garimella

CTRC Research Publications

devised to conduct detailed heat transfer and bubble measurements during boiling on a heater surface with controlled roughness. This first of two companion papers discusses details of the fabrication, construction, and operation of the experimental facility. Test pieces are fabricated from 50.8 mmx50.8 mmx3.18 mm borosilicate glass squares that are roughened by abrading with diamond compound with particles of known size and then annealed in order to control small-scale roughness features. Heater/sensor devices are fabricated by depositing indium tin oxide (ITO), a transparent electrically conductive material, on top of the roughened glass surfaces. A method for calibrating the ITO devices …

Metal Functionalization Of Carbon Nanotubes For Enhanced Sintered Powder Wicks, A. S. Kousalya, J A. Weibel, S V. Garimella, T. S. Fisher

CTRC Research Publications

Phase change cooling schemes involving passive heat spreading devices, such as heat pipes and vapor chambers, are widely adopted for thermal management of high heat-flux technologies. In this study, carbon nanotubes (CNTs) are fabricated on a 200 micrometer thick sintered copper powder wick layer using microwave plasma enhanced chemical vapor deposition technique. A physical vapor deposition process is used to coat the CNTs with a varying thickness of copper to promote surface wetting with the working fluid, water. Thermal performance of the bare sintered copper powder sample (without CNTs) and the copperfunctionalized CNT-coated sintered copper powder wick samples is compared …

Review Of Molten-Salt Thermocline Tank Modeling For Solar Thermal Energy Storage, S. M. Flueckiger, Z. Yang, S V. Garimella

CTRC Research Publications

Molten-salt thermocline tanks are a low-cost option for thermal energy storage in concentrating solar power systems. A review of previous experimental and numerical thermocline tank studies is performed to identify key issues associated with tank design and performance. Published models have shown that tank discharge performance improves with both larger tank height and smaller internal filler diameter due to increased thermal stratification and sustained outflow of molten salt with high thermal quality. For well-insulated (adiabatic) tanks, low molten-salt flow rates reduce the axial extent of the heat-exchange region and increase discharge efficiency. Under nonadiabatic conditions, low flow rates become detrimental …

Evaporation Analysis Of Sintered Wick Microstructures, K. K. Bodla, J. Y. Murthy, S V. Garimella

CTRC Research Publications

Heat pipes offer passive transport of heat over long distances without incurring a significant drop in temperature. Topological and microstructural details of the wick material embedded in a heat pipe help determine its thermal performance. A good understanding of pore-scale transport phenomena is crucial to enhancing heat pipe performance. In this study, pore-scale analysis of thin-film evaporation through sintered copper wicks is performed. X-ray microtomography is employed to generate geometrically faithful, feature-preserving meshes. Commercial sintered wicks with particle sizes in the range of 45–60 lm, 106–150 lm and 250–355 lm and with approximately 61% porosity are considered. The capillary pressure, …

Advances In Fluid And Thermal Transport Property Analysis And Design Of Sintered Porous Wick Microstructures, K. K. Bodla, J. A. Weibel, S V. Garimella

CTRC Research Publications

Sintered porous structures are ubiquitous as heat transport media for thermal management and other applications. In particular, low-porosity sintered packed beds are used as capillary-wicking and evaporation-enhancement structures in heat pipes. Accurate prediction and analysis of their transport characteristics for different microstructure geometries is important for improved design. Owing to the random nature and geometric complexity of these materials, development of predictive methods has been the subject of extensive prior research. The present work summarizes and builds upon past studies and recent advances in pore-scale modeling of fluid and thermal transport within such heterogeneous media. A brief review of various …

Robust Polyhedral Minkowski Sums With Gpu Implementation, Min-Ho Kyung, Elisha P. Sacks, Victor Milenkovic

Department of Computer Science Technical Reports

No abstract provided.

Roles Of Jnrap2.6-Like From The Transition Zone Of Black Walnut In Hormone Signaling, Zhonglian Huang, Peng Zhao, Jose Medina, Richard Meilan, Keith E. Woeste

Department of Forestry & Natural Resources Faculty Publications

An EST sequence, designated JnRAP2-like, was isolated from tissue at the heartwood/sapwood transition zone (TZ) in black walnut (Juglans nigra L). The deduced amino acid sequence of JnRAP2-like protein consists of a single AP2-containing domain with significant similarity to conserved AP2/ERF DNA-binding domains in other species. Based on multiple sequence alignment, JnRAP2-like appears to be an ortholog of RAP2.6L (At5g13330), which encodes an ethylene response element binding protein in Arabidopsis thaliana. Real-time PCR revealed that the JnRAP2-like was expressed most abundantly in TZ of trees harvested in fall when compared with other xylem tissues harvested in the …

Business Language Studies And Study Abroad In “A Changed World”, Deb S. Reisinger

Global Business Languages

Postsecondary institutions increasingly focus their efforts on internationalization, but foreign language faculty and language and literature departments are conspicuously absent from the great majority of these discussions (Knight 2006, Gerndt 2012). The emerging field of Business Language Studies (Doyle 2012) offers an important path to participating in these decisions and thus to helping shape the discussions about developing our students’ global and intercultural competencies. The purpose of this article is twofold. On the one hand, we will show how BLS aligns with recent pedagogical trends put forth by national associations (MLA, ACTFL, AAUC), underscoring the importance of showcasing its work …

Experimental Pedagogy In A Course On International Business In French, Marie-Pascale Pieretti

Global Business Languages

This article showcases “International Business in French,” a course developed at Drew University, with a special focus on ways in which students use their experience to construct knowledge of the world of business and economics in a variety of Francophone contexts. To illustrate the value experiential pedagogy can add to a business language course, it examines in particular the ways in which a trip to Quebec, the study abroad component embedded in the course, reinforces, challenges, and reveals ambiguities concerning the knowledge acquired in class prior to the trip. In conclusion, it outlines and discusses the challenges such a pedagogy …

The Sudden Selector's Guide To Physics Resources, Michael Fosmire

Libraries Faculty and Staff Scholarship and Research

This book provides a foundation to the resources and services unique to physics librarianship that will help you work successfully with your users. The first part of the book includes an overview of the discipline, including current hot topics of research (chapter 1), a brief introduction to the library liaison role (chapter 2), an analysis of the life cycle of information in physics and how physicists use different kinds of information (chapter 3). The second part of the book delves into the different types of information resources (books, journals, websites, and data sets) and describes which resources you need to …