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Articles 1 - 24 of 24
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Channel, Phase Noise, And Frequency Offset In Ofdm Systems: Joint Estimation, Data Detection, And Hybrid Cramér-Rao Lower Bound, Omar Hazim Salim, Ali A. Nasir, Hani Mehrpouyan, Wei Xiang, Salman Durrani, Rodney A. Kennedy
Channel, Phase Noise, And Frequency Offset In Ofdm Systems: Joint Estimation, Data Detection, And Hybrid Cramér-Rao Lower Bound, Omar Hazim Salim, Ali A. Nasir, Hani Mehrpouyan, Wei Xiang, Salman Durrani, Rodney A. Kennedy
Hani Mehrpouyan
Oscillator phase noise (PHN) and carrier frequency offset (CFO) can adversely impact the performance of orthogonal frequency division multiplexing (OFDM) systems, since they can result in inter carrier interference and rotation of the signal constellation. In this paper, we propose an expectation conditional maximization (ECM) based algorithm for joint estimation of channel, PHN, and CFO in OFDM systems. We present the signal model for the estimation problem and derive the hybrid Cramér-Rao lower bound (HCRB) for the joint estimation problem. Next, we propose an iterative receiver based on an extended Kalman filter for joint data detection and PHN tracking. Numerical …
Tensile Gaas(111) Quantum Dashes With Tunable Luminescence Below The Bulk Bandgap, Paul J. Simmonds
Tensile Gaas(111) Quantum Dashes With Tunable Luminescence Below The Bulk Bandgap, Paul J. Simmonds
Paul J. Simmonds
Strain-based band engineering in quantum dots and dashes has been predominantly limited to compressively strained systems. However, tensile strain strongly reduces the bandgaps of nanostructures, enabling nanostructures to emit light at lower energies than they could under compressive strain. We demonstrate the self-assembled growth of dislocation-free GaAs quantum dashes on an InP(111)B substrate, using a 3.8% tensile lattice-mismatch. Due to the high tensile strain, the GaAs quantum dashes luminesce at 110–240 meV below the bandgap of bulk GaAs. The emission energy is readily tuned by adjusting the size of the quantum dashes via deposition thickness. Tensile self-assembly creates new opportunities …
Catching Their Attention: Slide Shows As Outreach, Elizabeth Ramsey
Catching Their Attention: Slide Shows As Outreach, Elizabeth Ramsey
Elizabeth Ramsey
Albertsons Library at Boise State University has found slide shows to be an essential and easy to manage component in its outreach efforts and branding strategy. The slide shows run continually on a TV monitor in the library lobby as well as on all the computers in the library labs. This presentation focuses on the strategies used in the selection of topics, images and text, presenting examples of some of the most popular slides used at Albertsons Libraries categorized under recommended best practices.
The Effects Of Ambient Media: What Unplugging Reveals About Being Plugged In, Jessica Roberts, Michael Koliska
The Effects Of Ambient Media: What Unplugging Reveals About Being Plugged In, Jessica Roberts, Michael Koliska
Jessica Roberts
An ever-increasing number of us live in a world rich in information and media that provide us with constant access to that information. Besides television, radio, newspapers, and computers, we now carry communication devices with us. Mobile devices with digital content — phones, iPods, PDAs — have become ubiquitous around the world, creating an information environment with as yet unknown consequences for the way we function and the way we think and feel. This study examines responses from students at 12 universities from 10 nations who tried to avoid all “media” for 24 hours and reflect on their experience, and …
A Test Of The Intergenerational Conflict Model In Indonesia Shows No Evidence Of Earlier Menopause In Female-Dispersing Groups, Kristin Snopkowski, Cristina Moya, Rebecca Sear
A Test Of The Intergenerational Conflict Model In Indonesia Shows No Evidence Of Earlier Menopause In Female-Dispersing Groups, Kristin Snopkowski, Cristina Moya, Rebecca Sear
Kristin Snopkowski
Menopause remains an evolutionary puzzle, as humans are unique among primates in having a long post-fertile lifespan. One model proposes that intergenerational conflict in patrilocal populations favours female reproductive cessation. This model predicts that women should experience menopause earlier in groups with an evolutionary history of patrilocality compared with matrilocal groups. Using data from the Indonesia Family Life Survey, we test this model at multiple timescales: deep historical time, comparing age at menopause in ancestrally patrilocal Chinese Indonesians with ancestrally matrilocal Austronesian Indonesians; more recent historical time, comparing age at menopause in ethnic groups with differing postmarital residence within Indonesia …
Reasoning & Proof In The Hs Common Core, Laurie O. Cavey
Reasoning & Proof In The Hs Common Core, Laurie O. Cavey
Laurie O. Cavey
No abstract provided.
A Synthetic Biosocial Model Of Fertility Transition: Testing The Relative Contribution Of Embodied Capital Theory, Changing Cultural Norms, And Women's Labor Force Participation, Kristin Snopkowski, Hillard Kaplan
A Synthetic Biosocial Model Of Fertility Transition: Testing The Relative Contribution Of Embodied Capital Theory, Changing Cultural Norms, And Women's Labor Force Participation, Kristin Snopkowski, Hillard Kaplan
Kristin Snopkowski
This article presents a biosocial model of fertility decline, which integrates ecological-economic and informational-cultural hypotheses of fertility transition in a unified theoretical framework. The model is then applied to empirical data collected among 500 women from San Borja, Bolivia, a population undergoing fertility transition. Using a combination of event history analysis, multiple regression, and structural equation modeling, we examine the pathways by which education responds to birth cohort, parental education and network ties, and how age at first birth and total fertility, in turn, respond to birth cohort, social network ties, education, expectations about parental investment, work, and contraceptive use. …
Father Absence And Reproduction-Related Outcomes In Malaysia, A Transitional Fertility Population, Paula Sheppard, Kristin Snopkowski, Rebecca Sear
Father Absence And Reproduction-Related Outcomes In Malaysia, A Transitional Fertility Population, Paula Sheppard, Kristin Snopkowski, Rebecca Sear
Kristin Snopkowski
Father absence is consistently associated with children’s reproductive outcomes in industrialized countries. It has been suggested that father absence acts as a cue to particular environmental conditions that influence life history strategies. Much less is known, however, about the effects of father absence on such outcomes in lower-income countries. Using data from the 1988 Malaysian Family Life Survey (n=567), we tested the effect of father absence on daughters’ age at menarche, first marriage, and first birth; parity progression rates; and desired completed family size in Malaysia, a country undergoing an economic and fertility transition. Father absence during later …
Child Health And Parental Paid Work, Peter Burton, Kelly Chen, Lynn Lethbridge, Shelley Phipps
Child Health And Parental Paid Work, Peter Burton, Kelly Chen, Lynn Lethbridge, Shelley Phipps
Kelly Chen
We ask how the paid work of Canadian married mothers and fathers is affected when a child has a physical/mental condition or health problem that leads to restrictions in daily activities. Using the Statistics Canada National Longitudinal Survey of Children and Youth, we find that married mothers of children with disabilities are less likely to engage in paid work and/or work fewer paid hours per week. No statistically significant changes in paid work participation or hours are apparent for fathers of the same children. We find, moreover, evidence that the degree of specialization within families increases when there is a …
Joint Phase Noise Estimation And Data Detection In Coded Mimo Systems, Arif O. Isikman, Hani Mehrpouyan, Ali A. Nasir, Alexander G. Amat, Rodney A. Kennedy
Joint Phase Noise Estimation And Data Detection In Coded Mimo Systems, Arif O. Isikman, Hani Mehrpouyan, Ali A. Nasir, Alexander G. Amat, Rodney A. Kennedy
Hani Mehrpouyan
In this paper, the problem of joint oscillator phase noise (PHN) estimation and data detection for multi-input multi-output (MIMO) systems using bit-interleaved coded modulation (BICM) is analyzed. A new MIMO receiver that iterates between the estimator and the detector, based on the expectation-maximization (EM) framework, is proposed. It is shown that at high signal-to-noise ratios, a maximum a posteriori estimator (MAP) can be used to carry out the maximization step of the EM algorithm. Moreover, to reduce the computational complexity of the proposed EM algorithm, a soft decision-directed extended Kalman filter-smoother (EKFS) is applied instead of the MAP estimator to …
Goal Setting And Rewards For Addressing Nonresponse To Empirical Intervention, Jeremy W. Ford
Goal Setting And Rewards For Addressing Nonresponse To Empirical Intervention, Jeremy W. Ford
Jeremy W. Ford
Reread-Adapt and Answer-Comprehend (RAAC) is an intervention targeting difficulties with reading fluency and comprehension. Previous research has demonstrated RAAC to be effective for students with and without disabilities. This study extended research using RAAC by using goal setting and rewards. Participants will learn how to use these strategies to implement less intrusive changes for when a student does not respond to an empirically-based intervention prior to more intrusive changes (e.g., duration, frequency, different intervention).
Cbms And Postsecondary Students With Developmental Disabilities: Examining Technical Adequacy, John L. Hosp, Jeremy W. Ford, Kiersten Hensley, Sally M. Huddle
Cbms And Postsecondary Students With Developmental Disabilities: Examining Technical Adequacy, John L. Hosp, Jeremy W. Ford, Kiersten Hensley, Sally M. Huddle
Jeremy W. Ford
For students with developmental disabilities (DD), postsecondary education opportunities are increasing and they require focused academic skill instruction. Tools for progress monitoring (e.g., Curriculum-Based Measurement; CBM) are needed however, research with CBM and students with DD is limited. Participants will be able to evaluate the technical adequacy of these instruments.
Improving Bandwidth Efficiency In E-Band Communication Systems, Hani Mehrpouyan, M. Reza Khanzadi, Michail Matthaiou, Akbar M. Sayeed, Robert Schober, Yingbo Hua
Improving Bandwidth Efficiency In E-Band Communication Systems, Hani Mehrpouyan, M. Reza Khanzadi, Michail Matthaiou, Akbar M. Sayeed, Robert Schober, Yingbo Hua
Hani Mehrpouyan
The allocation of a large amount of bandwidth by regulating bodies in the 70/80 GHz band, that is, the E-band, has opened up new potentials and challenges for providing affordable and reliable gigabit-per-second wireless point-to-point links. This article first reviews the available bandwidth and licensing regulations in the E-band. Subsequently, different propagation models (e.g., the ITU-R and Cane models) are compared against measurement results, and it is concluded that to meet specific availability requirements, E-band wireless systems may need to be designed with larger fade margins compared to microwave systems. A similar comparison is carried out between measurements …
New Quantum Dot Nanomaterials To Boost Solar Energy Harvesting, Paul J. Simmonds
New Quantum Dot Nanomaterials To Boost Solar Energy Harvesting, Paul J. Simmonds
Paul J. Simmonds
Sequential photon absorption processes in semiconductor solar cells represent a route to improving their efficiency.
Employee Internet Privacy: A Proposed Act That Balances Legitimate Employer Rights And Employee Privacy, Susan Park J.D.
Employee Internet Privacy: A Proposed Act That Balances Legitimate Employer Rights And Employee Privacy, Susan Park J.D.
Susan Park
No abstract provided.
A Fresh Bestiary: Writing Animals Into Latin American History (Book Review Of Centering Animals In Latin American History, Martha Few, Zeb Tortorici, Eds.), Emily Wakild
Emily Wakild
Review of: Martha Few, Zeb Tortorici, eds. Centering Animals in Latin American History. Durham: Duke University Press, 2013. 408 pp. $94.95 (cloth), ISBN 978-0-8223-5383-6; $26.95 (paper), ISBN 978-0-8223-5397-3.
Ethnoarchaeology As A Strategy For Building Frames Of Reference For Research Problems, Pei-Lin Yu
Ethnoarchaeology As A Strategy For Building Frames Of Reference For Research Problems, Pei-Lin Yu
Pei-Lin Yu
Ethnoarchaeology is a powerful strategy for structuring archaeological research questions that uses ethnographic information to make inferences about the material residues of past human activities. Ethnoarchaeology is not a theoretical approach per se, so it can investigate research questions generated from a wide variety of theoretical perspectives. Ethnoarchaeological scopes and scales of research are expanding rapidly in geography, chronology, method, and theoretical stance, from variables conditioning the manufacture of traditional technology to the evolution of symbolic expression and ritual behaviors.
Ice Patch Archaeology And Paleoecology In Glacier National Park, Pei-Lin Yu
Ice Patch Archaeology And Paleoecology In Glacier National Park, Pei-Lin Yu
Pei-Lin Yu
A fragment of basket. The tip of a digging stick. The shaft of an ancient spearthrower. Very rarely do such items preserve in the archeological record, but these works of ingenuity and craftsmanship, reflective of past human presence and lifeways in sub-alpine and alpine environments, have been preserved in nearly perfect condition in ice and snow patches for hundreds—or even thousands—of years. Also locked in the ice are traces of vanished ecosystems: animal scat, bones, horns, antlers, fragments of ancient wood, even entire “frozen forests.”
Implications Of Upper Columbia River Lithic Technology For Prehistoric Fishing In The Rockies, Pei-Lin Yu, Jackie M. Cook
Implications Of Upper Columbia River Lithic Technology For Prehistoric Fishing In The Rockies, Pei-Lin Yu, Jackie M. Cook
Pei-Lin Yu
Lithic tools used for fish processing in North America range from hafted lanceolate bifaces and microlithic blades to handheld lunate tools. Despite use wear and residue analysis, archaeologists still lack diagnostic means to identify archaeological fish processing tools at larger scales, resulting in a dearth of knowledge about past fishing behavior. This paper describes and predicts variability in tool shape using ethnographic fish processing data and functional morphology of tabular quartzite tools from Kettle Falls, a major Columbia River salmon fishery. Gender-specific organization of labor during intensive fish harvest and technological behavior associated with large-scale processing practiced by aquatic-focused foragers …
Channel Estimation And Carrier Recovery In The Presence Of Phase Noise In Ofdm Relay Systems, Rui Wang, Hani Mehrpouyan, Meixia Tao, Yingbo Hua
Channel Estimation And Carrier Recovery In The Presence Of Phase Noise In Ofdm Relay Systems, Rui Wang, Hani Mehrpouyan, Meixia Tao, Yingbo Hua
Hani Mehrpouyan
In this paper, we analyze joint channel, carrier frequency offset (CFO), and phase noise estimation in orthogonal frequency division multiplexing (OFDM) relaying networks. To achieve this goal, a detailed transmission framework involving both training and data symbols is first presented. Next, a novel algorithm that applies the training symbols to jointly estimate the channel responses, CFO, and phase noise parameters based on the maximum a posteriori criterion is proposed. Additionally, to evaluate the performance of the proposed channel estimation and carrier recovery algorithms, we analyze the ambiguities among the estimated parameters. Based on this analysis, a new Hybrid Cramér-Rao Lower …
Enhanced List-Based Group-Wise Overloaded Receiver With Application To Satellite Reception, Zohair Abu-Shaban, Bhavani Shankar Mysore R., Hani Mehrpouyan, Björn Ottersten
Enhanced List-Based Group-Wise Overloaded Receiver With Application To Satellite Reception, Zohair Abu-Shaban, Bhavani Shankar Mysore R., Hani Mehrpouyan, Björn Ottersten
Hani Mehrpouyan
The market trends towards the use of smaller dish antennas for TV satellite receivers, as well as the growing density of broadcasting satellites in orbit require the application of robust adjacent satellite interference (ASI) cancellation algorithms at the receivers. The wider beamwidth of a small size dish and the growing number of satellites in orbit impose an overloaded scenario, i.e., a scenario where the number of transmitting satellites exceeds the number of receiving antennas. For such a scenario, we present a two stage receiver to enhance signal detection from the satellite of interest, i.e., the satellite that the dish is …
How To Pack A Room: 3d Printing At Albertsons Library, Deana Brown, Amy Vecchione
How To Pack A Room: 3d Printing At Albertsons Library, Deana Brown, Amy Vecchione
Amy E. Vecchione
Libraries have a history of helping their communities create, whether it’s writing a paper or acquiring new information on a topic. Libraries have always helped communities learn new skills, and sometimes those skills are best acquired through creating. As technology has advanced, libraries too have evolved to boost individual’s digital fluency skills by providing tools and resources to help understand and experience new technology. Albertsons Library strives to helps students, staff, and faculty innovate by encouraging collaborative opportunities that promote information access and digital fluency skills. Providing campus-wide access to a 3D printer fits perfectly with this aim by bringing …
Corporate Ventriloquism: Corporate Advocacy, The Coal Industry, And The Appropriation Of Voice, Peter K. Bsumek, Jen Schneider, Steve Schwarze, Jennifer Peeples
Corporate Ventriloquism: Corporate Advocacy, The Coal Industry, And The Appropriation Of Voice, Peter K. Bsumek, Jen Schneider, Steve Schwarze, Jennifer Peeples
Jen Schneider
In the second decade of the 21st century, the U.S. coal industry is facing unprecedented challenges. While for many years coal provided nearly half of the U.S. electricity, in the spring of 2012 that share dropped to below 40% and is expected to continue falling (Energy Information Administration, 2012).1 Coal production is increasing not in Appalachia, the primary U.S. source for coal historically, but in Wyoming's Powder River Basin (Goodell, 2006). Market competition from the natural gas industry combined with well organized climate and anti-nountaintop removal (MTR) campagins have significantly curtailed the production of new coal-fired power plants in …
Industrial Apocalyptic: Neoliberalism, Coal, And The Burlesque Frame, Jennifer Peeples, Pete Bsumek, Steve Schwarze, Jen Schneider
Industrial Apocalyptic: Neoliberalism, Coal, And The Burlesque Frame, Jennifer Peeples, Pete Bsumek, Steve Schwarze, Jen Schneider
Jen Schneider
Rhetorical scholarship and cultural commentary have demonstrated that environmentalist voices are consistently associated with apocalyptic rhetoric. However, this association deflects attention from the apocalyptic rhetoric that comes from industry and countermovements to environmentalism. This essay seeks to remedy that oversight by proposing the concept of "industrial apocalyptic" as a significant rhetorical form in environmental controversy. Based on analysis of the rhetoric of the U.S. coal industry, we find that these industrial apocalyptic narratives rely on a burlesque frame to disrupt the categories of establishment and outsider and thus thwart environmental regulation. Ultimately, we argue that industrial apocalyptic co-opts environmentalist appeals …