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  • In-situ measurement of dimensional changes during supercritical fluid impregnation of white spruce lumber

    Creator:
    Kim, Gyu Hyeok and Morrell, Jeffrey J.
    Abstract:
    Supercritical fluids can markedly enhance preservative treatment of wood, but the high pressures employed can lead to collapse. We investigated the effects of the rates of pressure application and release on displacement of white spruce lumber during supercritical impregnation with carbon dioxide. Displacement was greatest when pressure was rapidly increased...
    Resource Type:
    Article
    Full Text:
    SIJPERCRITICAL FLUID IMPREGNATION OF WHITE SPRUCE LUMBER Gyu Hyeok Kim? Associate Professor Department of

  • Low-power design techniques for low-voltage analog-to-digital converters

    Creator:
    Kim, Min Gyu
    Abstract:
    The demand for portable electronic systems and the continued down-scaling of device dimensions resulted in rapid improvement in the performance of integrated systems. Several low-voltage design techniques have been proposed to operate analog circuits with sub-1V supply. However, these techniques require higher power consumption to achieve large dynamic range while...
    Resource Type:
    Dissertation
    Full Text:
    1 AN ABSTRACT OF THE THESIS OF Min Gyu Kim for the degree of Doctor

  • Synthesis, properties and structural characterization of novel oxo, nitrido molybdenum compounds with alkoxy and siloxy ligands

    Creator:
    Kim, Gyu Shik
    Resource Type:
    Dissertation
    Full Text:
    Gyu Shik Kim for the degree of Doctor of Philosophy in Chemistry presented on February 24, 1989

  • Connectivity among straits of the northwest Pacific marginal seas

    Creator:
    Cho, Yang-Ki, Seo, Gwang-Ho, Choi, Byoung-Ju, Kim, Sangil, Kim, Young-Gyu, Youn, Yong-Hoon, and Dever, Edward P.
    Abstract:
    The connectivity among straits of the northwest Pacific marginal seas is investigated with a primitive-equation ocean circulation model simulated for 10 years from 1994 to 2003. Over the simulation interval the temporal and spatial means and variations of the model sea surface temperature are comparable to those of the satellite...
    Resource Type:
    Article
    Full Text:
    Pacific marginal seas Yang-Ki Cho,1 Gwang-Ho Seo,1 Byoung-Ju Choi,2 Sangil Kim,3 Young-Gyu Kim,4 Yong

  • Exciton dynamics in atomically thin MoS2: Interexcitonic interaction and broadening kinetics

    Creator:
    Sim, Sangwan, Park, Jusang, Song, Jeong-Gyu, In, Chihun, Lee, Yun-Shik, Kim, Hyungjun, and Choi, Hyunyong
    Abstract:
    We report ultrafast pump-probe spectroscopy examining exciton dynamics in atomically thin MoS2. Spectrally and temporally resolved measurements are performed to investigate the interaction dynamics of two important direct-gap excitons (A and B) and their associated broadening kinetics. The two excitons show strongly correlated interexcitonic dynamic, in which the transient blue-shifted...
    Resource Type:
    Article
    Full Text:
    -Gyu Song,1 Chihun In,1 Yun-Shik Lee,2 Hyungjun Kim,1,* and Hyunyong Choi1,† 1School of Electrical and

  • Performance-based seismic design of light-frame shearwalls

    Creator:
    Kim, Jun Hee
    Abstract:
    Performance-based design has gained interest in recent years among structural designers and researchers. Performance-based design includes selection of appropriate building sites, structural systems and configurations, as well as analytical procedures used in the design process, to confirm that the structure has adequate strength, stiffness and energy dissipation capacity to respond...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Jun Hee Kim for the degree

  • International students as educational migrants : east and southwest Asian perspectives

    Creator:
    Visconti, Lauren A.
    Abstract:
    Projected to reach one million people next year, international students in the United States are undergoing a transformative educational migration. Moving away from the existing study abroad paradigm is the first step to more accurately understand the lived experience of an educational migrant. Discovering the perceptions of what value an...
    Resource Type:
    Masters Thesis

  • 1996-98 Biennial report / Forest Research Laboratory

    Creator:
    Oregon State University. Forest Research Laboratory
    Resource Type:
    Technical Report

  • Terahertz transmission & spectroscopy of vertically grown multi-walled carbon nanotube forests

    Creator:
    Maizy, Louis
    Abstract:
    In this thesis, I present studies in the field of terahertz [THz] spectroscopy. It covers both the generation and detection of ultra-fast broadband THz pulses, as well as the transmission properties of vertically grown multi-walled carbon nanotube forests [MWCNTs]. We have found that these vertically grown MWCNTs respond strongly to...
    Resource Type:
    Masters Thesis
    Full Text:
    Hyeok An, and Young Hee Lee. Terahertz electrical and optical characteristics of double-walled carbon

  • Nonlinear Terahertz Spectroscopy and imaging of Carbon Nanomaterials

    Creator:
    Lee, Byounghwak
    Abstract:
    This dissertation presents nonlinear terahertz (THz) properties of carbon nanomaterials investigated by time-resolved high-field THz spectroscopy. In order to determine THz characteristics of nanomaterials, we performed THz power spectrum measurement, THz raster imaging, THz time-domain spectroscopy (THz-TDS) and time-resolved pump-probe experiment on two different types of single layer graphene and...
    Resource Type:
    Dissertation

  • Enhancing and profiling the AE32000 cycle accurate embedded processor simulator

    Creator:
    Megarajan, Balaji
    Abstract:
    The AE32000 processor core, developed by Advanced Digital Chips Inc., Korea, is used primarily in the embedded processing environment. The AE32000 simulator models this embedded processor core having high code density. An enhanced simulator was developed to study the performance of the present Instruction Set Architecture after comparison with the...
    Resource Type:
    Masters Thesis
    Full Text:
    . William Hetherington for serving on my defense committee. I also want to thank John Mark, Savi and Kim

  • Design techniques for clocking high performance signaling systems

    Creator:
    Hanumolu, Pavan Kumar
    Abstract:
    Scaling of CMOS technology has progressed relentlessly for the past several decades. In order for this unprecedented scaling to benefit the performance of large digital systems, the communication bandwidth between integrated circuits (ICs) must scale accordingly. However, interconnect technology does not scale as aggressively, making communication between chips the major...
    Resource Type:
    Dissertation
    Full Text:
    wizardry with computers and saved me from insanity! Min Gyu Kim showed me the value of simplicity both in

  • LPBF and Post Processing of H13 Tool Steel

    Creator:
    Alabdulali, Ali
    Abstract:
    Laser powder bed fusion (LPBF) is an innovative method where metal powder is fused together to generate complex geometries. LPBF is used as a technology to reduce material waste, and extensive labor that are often linked to conventional subtractive manufacturing. H13 tool steel is one of the widely used materials...
    Resource Type:
    Masters Thesis
    Date Created:
    2023-08-31
    Full Text:
    Technology 219 (2015): 181-192. [21] Ahn, Dong-Gyu. "Directed energy deposition (DED) process: State of the

  • Growth, Characterization and Applications of Zinc Sulfide Thin Films by Solution-Based Processes

    Creator:
    Chiu, Dick
    Abstract:
    Zinc Sulfide (ZnS) thin film, with a wide band gap, has been used for many applications, such as buffer layer for CIGS solar cells, light emitting diodes and thin film electroluminescent devices. In this work, ZnS thin films were prepared using two different deposition processes. In the first method, ZnS...
    Resource Type:
    Dissertation
    Full Text:
    and discussion in my research and a wide range of other topics, Dr. Ki-Joong Kim for many BBQ and

  • Low noise clocking for high speed serial links

    Creator:
    Brownlee, Merrick
    Abstract:
    As the functionality of digital chips continues to increase dramatically, chip- to-chip communication bandwidths must scale accordingly to avoid constraining the overall system performance. Therefore, high speed transceiver design has be- come an important research topic. In particular, the performance of the circuits that are responsible for timing accuracy are...
    Resource Type:
    Dissertation
    Full Text:
    , Min-Gyu Kim, Charlie Myers, Vova Kratyuk, Ting Wu, Jose Ceballos, Martin Vandepas, Kerem Ok, Dong

  • Low-voltage data converters

    Creator:
    Meng, Qingdong
    Abstract:
    With the growing demand for portable/consumer electronics, such as digital audio/video (AV), the downscaling of device dimensions, which enables the integration of an increasing number of transistors in a single chip, is mandatory. This trend also continuously pushes the power supply voltage down to reduce the power consumption and improve...
    Resource Type:
    Dissertation
    Full Text:
    , Gil-cho Ahn, Ting Wu, Jose Ceballos, Min-gyu Kim, Pavan Kumar Hanumolu, Yuhan Xie, Minfang Su

  • Terahertz Imaging and Nonlinear Spectroscopy of Semiconductors using Plasmonic Devices

    Creator:
    Thompson, Zachary James
    Abstract:
    In this dissertation, a series of studies in the field of terahertz (THz) science are presented, specifically using nonlinear THz spectroscopy. We exploit huge field enhancement and subwavelength confinement in plasmonic structures. There are three distinct projects which will be discussed: nonlinear THz spectroscopy using plasmonic induced transparency (PIT), THz-triggered...
    Resource Type:
    Dissertation

  • A multi-bit delta sigma audio digital-to-analog converter

    Creator:
    Wang, Ruopeng
    Abstract:
    Digital-to-analog converters (DACs) with wide dynamic range and high linearity are required for high-end audio applications. A multi-bit delta sigma audio DAC, using a novel gain-correction technique, is described in this thesis. For widely varying on-chip RC time constant, the DAC gain can be accurately controlled by the correction circuitry....
    Resource Type:
    Dissertation
    Full Text:
    signal group members. The discussions with Vivek Sharma, Pavan Hanumolu and Min-Gyu Kim are very

  • Energy and area efficient techniques for data converters

    Creator:
    Venkatram, Hariprasath
    Abstract:
    Data converters are ubiquitous building blocks of a signal chain. The rapid increase in communication and connectivity devices presents new avenues for pushing the state of the art analog to digital converters. Techniques for improving resolution, bandwidth, linearity and bit-error rate, while reducing the power, energy and area is the...
    Resource Type:
    Dissertation
    Full Text:
    , Min Gyu Kim, Todd Brooks, Sherif Galal, Felix Cheung, Sasikumar Arunachalam, Jianlong Chen, Vinod

  • A multi-bit hybrid DSM over full-scale range without feedback DEM

    Creator:
    Kwon, Sunwoo, 1974-
    Abstract:
    Evolution of the mobile communication standards and proliferation of hand-held devices mandate stringent Analog-to-Digital Converter (ADC) specifications. Among various ADCs, a ∆Σ ADC is best known as a power-efficient ADC when more than 12b is required. However, a conventional discrete-time (DT) ∆Σ Modulator (∆ΣM) is inadequate for low-power wideband applications...
    Resource Type:
    Dissertation
    Full Text:
    Hanumolu (at that time, a graduate student), Christopher and Amy Hanken, Min-Gyu Kim, Jim and Thuy Le

  • Low-power high-resolution delta-sigma ADC design techniques

    Creator:
    Wang, Tao
    Abstract:
    This dissertation presents a low-power high-resolution delta-sigma ADC. Two new architectural design techniques are proposed to reduce the power dissipation of the ADC. Compared to the conventional active adder, the direct charge transfer (DCT) adder greatly saves power by keeping the feedback factor of the active adder unity. However, the...
    Resource Type:
    Dissertation
    Full Text:
    , Tao Jiang, Youngho Jung, Seokmin Jung, Po-Yao Ke, Qadeer Khan, Min-Gyu Kim, Ming-Hung Kuo, Ho-Young

  • High-speed CMOS dual-modulus presalers for frequency synthesis

    Creator:
    Desikachari, Ranganathan
    Abstract:
    Phase-locked loop (PLL) frequency synthesizers lie at the heart of most radio transceivers. An important objective of the electronics and communications industry is to design high-speed building blocks which dissipate the lowest possible power, and to ac- complish this with the cheapest technology. The dual-modulus prescaler is one of the...
    Resource Type:
    Masters Thesis
    Full Text:
    -Cho Ahn, José Ceballos, Jipeng Li, Anurag Pulincherry, Yoshio Nishida and Min-Gyu Kim have been

  • Design techniques for PVT tolerant phase-locked loops

    Creator:
    Wu, Ting
    Abstract:
    The continued scaling of deep-submicron CMOS technology enables low-voltage high-frequency phase-locked loops (PLLs) to be fully integrated in complex mixed-signal systems. However, fluctuations due to the manufacturing process and variations in environmental conditions, such as supply voltage and temperature, are also significantly increased. As a result, the performance of PLLs...
    Resource Type:
    Dissertation
    Full Text:
    friendship of Dr. Merrick Brownlee, Dr. Volodymyr Kratyuk, Dr. Min-Gyu Kim, Dr. Youn-Jae Kook, Dr. Gil-Cho

  • Low voltage techniques for pipelined analog-to-digital converters

    Creator:
    Carnes, Joshua Kenneth
    Abstract:
    To realize pipelined ADCs in deep-submicron processes, low voltage techniques must be developed to work around problems created by limited supply voltages such as the floating switch dead zone, reduced SNR, and reduced OpAmp performance. This thesis analyzes standard and low voltage design issues for pipelined ADCs and proposes a...
    Resource Type:
    Masters Thesis
    Full Text:
    over my stay at OSU including Dr. Pavan Hanumolu, Dr. Gil-Cho Ahn, Dr. YounJae Kook, Dr. Min-Gyu

  • OSU theses and dissertations : 1983-1992

    Creator:
    Glenn, Judith A.
    Abstract:
    Departmental and author index of Masters' theses and doctoral dissertations accepted by the Graduate School.
    Resource Type:
    Book
    Full Text:
    economic costs of self-sufficiency. 5 Nielsen, Kim C. Risk/return analysis of irrigation system design and

  • Comparison and impact of substrate noise due to clocked and clockless circuitry

    Creator:
    Le, Jim K.
    Abstract:
    Delay insensitive asynchronous circuitry provides significant advantages with respect to substrate noise due to localized switching. The differences between the substrate noise from NULL Convention Logic (NCL) and traditional Clocked Boolean Logic (CBL) are described and analyzed based on measured results. A test chip fabricated in the TSMC 0.25 um...
    Resource Type:
    Masters Thesis
    Full Text:
    grateful to Pavan Hanumolu and Ming-Gyu Kim for being wonderful friends and mentors. These guys along with

  • Evolutionary and Biochemical Studies of C₇-cyclitol Synthases and their Sunscreen Gene Clusters

    Creator:
    Osborn, Andrew
    Abstract:
    Sugar phosphate cyclases (SPCs) are enzymes involved in the biosynthesis of many important natural products. SPCs form a unique cyclitol during the early steps in the biosynthesis of many natural products. These natural products include rifamycin, which is chemically modified to rifampicin and used clinically as an antituberculosis drug, and...
    Resource Type:
    Dissertation

  • Simulation and modeling of substrate noise generation from synchronous and asynchronous digital logic circuits

    Creator:
    Hanken, Christopher
    Abstract:
    Efficient methods for simulating the substrate noise generated by complex synchronous and asynchronous digital logic circuits are presented. By simulating digital logic at the gate level, and precharacterizing the gates, the substrate noise generation can be predicted and used in a transistor level simulation of the sensitive analog blocks. This...
    Resource Type:
    Masters Thesis
    Full Text:
    Robert Batten, Vova Kratyuk, Min Gyu Kim, Merrick Brownlee, James Ayers, and Thomas Brown for all their

  • Design of a 14-bit continuous-time Delta-Sigma A/D modulator with 2.5MHz signal bandwidth

    Creator:
    Li, Zhimin
    Abstract:
    In recent years, there has been growing interest in both industry and academia to use continuous-time (CT) Δ-Σ A/D converters for wideband wireless and wireline communication applications. So far no reported CT Δ-Σ A/D modulator achieves 14-bit or higher dynamic range (DR) with more than 2MHz signal bandwidth (equivalently 4MS/s)....
    Resource Type:
    Dissertation
    Full Text:
    EECS, especially José Silva, Jipeng Li, Xuesheng Wang, Pavan Hanumolu, Min-Gyu Kim, Gil-Cho Ahn and

  • Biochemical Studies of Pactamycin Biosynthesis in Streptomyces pactum

    Creator:
    Eida, Auday
    Abstract:
    Ribomimetic natural products have long been known for their important biological activities. Structurally, they contain a densely functionalized cyclopentane unit that resembles ribose. Pactamycin, the prominent member of this class of natural products, is a potent protein synthesis inhibitor produced by the soil bacterium Streptomyces pactum. In pactamycin, the aminocyclopentitol...
    Resource Type:
    Dissertation

  • Estimating the Size of Clustered Hidden Populations

    Creator:
    Gamble, Laura J.
    Abstract:
    Successive sampling population size estimation (SS-PSE) is a method used by government agencies and aid organizations around the world to estimate the size of hidden populations using data from respondent-driven sampling (RDS) surveys. SS-PSE ad-dresses a specific need in estimation and helps us evaluate the vulnerability of areas to HIV...
    Resource Type:
    Dissertation
    Full Text:
    , increasing their practical use (Kim and Handcock, 2021; Johnston et al., 2013; Chabata et al., 2020

  • Studies in molybdenum oxide catalysts : I. Metal vapor reactions of molybdenum trioxide with various alkoxy silanes : II. Investigation of oxide supported molybdenum catalysts prepared from molybdenum(VI)dioxodiethoxide

    Creator:
    Huffman, David Earl
    Abstract:
    The cocondensation reactions of molybdenum trioxide vapor with tetraalkoxysilanes, trimethylalkoxysilanes, and hexamethyldisiloxane at -196°C were investigated. The products from the metal vapor reactions of tetramethoxysilane, tetraethoxysilane, and tetrapropoxysilane were characterized as molybdenum(VI)dioxodialkoxy compounds. The isolated compounds were found to be polymeric in the solid state by bridging through alkoxide groups....
    Resource Type:
    Dissertation
    Full Text:
    ; to James Krueger, John Yoke, Joe Nibler and Mike Schuyler for their guidance; to Gyu-Shik Kim

  • Algorithms for massive biological datasets

    Creator:
    Bryant, Douglas W. (Douglas Wesley)
    Abstract:
    Within the past several years the technology of high-throughput sequencing has transformed the study of biology by offering unprecedented access to life's fundamental building block, DNA. With this transformation's potential a host of brand-new challenges have emerged, many of which lend themselves to being solved through computational methods. From de...
    Resource Type:
    Dissertation

  • Understanding school bullying and workplace abuse in a Taiwanese context

    Creator:
    Lin, Yu-Hui
    Abstract:
    Bullying prevents its targets from enjoying a safe, stress-free living, learning, and working environment. For most children, bullying experiences will be merely unpleasant childhood memories. This remains the same in adult's working environment. During the past decade, the concept of workplace abuse has had an increasing resonance within western countries....
    Resource Type:
    Dissertation

  • A Computational Framework for Resilience-Informed Design

    Creator:
    Hulse, Daniel E.
    Abstract:
    It is desirable for complex engineered systems to perform missions efficiently and economically, even when these missions' complex, variable, long-term operational profiles make it likely for hazards to arise. It is thus important to design these systems to be resilient so that they will actively prevent and recover from hazards...
    Resource Type:
    Dissertation