Digital Commons Network^™

Ultra-Wideband Notched Characteristic Fed By Coplanar Waveguide, Rastanto Hadinegoro, Yuli Kurnia Ningsih, Indra Surjati

Makara Journal of Technology

In this paper, a novel Ultra-Wide Band (UWB) notch patch antenna with co-planar waveguide (CPW) fed is presented. This antenna only used one layer and the patch antenna is constructed on the first layer and back to back with CPW fed and bottom part is ground plane. The width notch is used to achieve the UWB characteristic. The results shown that the impedance bandwidth is 1130 MHz (1.662–2.792 GHz) or about 50.7% for VSWR <2.

Development Of The Soekarno–Hatta International Airport Rail Link Project Using The Value Engineering Method: Creating Value For Money, Mohammed Ali Berawi, Bambang Susantono, Suyono Dikun, Tommy Ilyas, Herawati Zetha Rahman, Abdur Rohim Boy Berawi, Teuku Yuri Zagloel, Perdana Miraj, Jade Sjafrecia Petroceany

Makara Journal of Technology

Soekarno–Hatta Airport is the main gateway for international flights to Greater Jakarta. Its accessibility depends on the inter-city and Sedyatmo toll roads, which causes congestion in peak hours, leading to uncertainty about travel times. The Soekarno–Hatta International Airport Rail Link (SHIARL) is proposed as an alternative mass transportation project, which is expected to provide accessibility and mobility for people and goods to and from the airport. Previously, the project was unattractive to private investors as it was technically and financially unfeasible. Therefore, this research aims to improve the feasibility of the Soekarno-Hatta International Airport Rail Link (SHIARL) by using a …

The Mechanical And Tribology Properties Of Sputtered Titanium Aluminum Nitride Coating On The Tungsten Carbide Insert Tool In The Dry Turning Of Tool Steel, Esmar Budi, Mohd. Razali Bin Muhamad, Md. Nizam Bin Abdul Rahman

Makara Journal of Technology

The effect of the sputtering parameters on the mechanical tribology properties of Titanium Aluminum Nitride coating on the tungsten cabide insert tool in the dry turning of tool steel has been investigated. The coating was deposited using a Direct Current magnetron sputtering system with various substrate biases (-79 to -221 V) and nitrogen flow rates (30 to 72 sccm). The dry turning test was carried out on a Computer Numeric Code machine using an optimum cutting parameter setting. The results show that the lowest flank wear (~0.4 mm) was achieved using a Titanium Aluminum Nitride-coated tool that was deposited at …

Continuous Production Of Nanotubes And Carbon Clusters By Use Of The Revolver-Injection-Type Arc Jet Producer, Tetsu Mieno, Naoki Matsumoto, Takahashi Tomie, H. Inoue

Makara Journal of Technology

Efficient and continuous production of fullerenes, single-walled carbon nanotubes (SWNTs), and carbon nano-particles has been developed by the JxB arc jet method, where the Lorentz force of magnetic field jets out gaseous carbon particles to the JxB direction. In order to realize continuous mass production of these carbon clusters, the revolverinjection- type arc jet producer (RIT-AJP) has been developed. Production of fullerenes, endohedral metallo-fullerenes, SWNTs, metal-encapsulated carbon nano particles has been examined.

Banner News, Rose Sibbel, Megan Olson, Makayla Carlson, Gian Buzzell, Amanda Betz, Bo Shen

Banner News

No abstract provided.

Control Of Responses Of Smart Plate Structures Under Non-Stationary Random Excitations, Xiaojian Yang

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

This thesis is concerned with an investigation of the control of responses of plate structures with piezoelectric layers and under complicated excitations modeled as a non-stationary random process. The plate structures and piezoelectric layers are both discretized by the mixed formulation finite element method (FEM).

The investigation consists of three parts. The first part is a literature survey and theoretical development. The second part is the eigenvalue solution and computation of uncontrolled response statistics of laminated plate structures under nonstationary random excitations. The final part is the introduction and application of the stochastic central difference (SCD) method that was presented …

Heat Transfer Enhancement And Applications Of Femtosecond Laser Processed Metallic Surfaces, Corey M. Kruse

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

In the present work, functionalized 304 stainless steel metallic surfaces were created with the use of a Femtosecond Laser Surface Processing (FLSP) technique. The laser processing technique produces self-organized micro/nanostructures on the surface. The heat transfer performance of various FLSP functionalized surfaces were characterized through pool boiling and Leidenfrost experiments. Enhancement in both the nucleate and film boiling heat transfer were observed through an increase of the critical heat flux and heat transfer coefficient as well as shifts in the Leidenfrost temperature respectively. For both experiments, a polished reference sample was used as a baseline line to compare against the …

The Mitigating Effect Of Strategic Behavior On The Net Benefits Of A Direct Load Control Program, Corey Lang, Edson Okwelum

Environmental and Natural Resource Economics Faculty Publications

Demand response is an important tool for utilities to manage load during peak periods. While the effects of demand response programs on peak load reductions are well studied and intuitive, assessments typically fail to recognize the potential for off-peak behavioral responses that may mitigate the total benefits of the program. Using smart meter consumption data on residential air conditioning units enrolled in a direct load control program, this paper examines changes in consumption prior to and after curtailment events. The results suggest substantial increases in off-peak consumption, which reduce energy, monetary, and environmental benefits of the program by over 40%.

Management Of Channel Catfish Ictalurus Punctatus In The Missouri River, Nebraska, Brandon L. Eder

School of Natural Resources: Dissertations, Theses, and Student Research

The popularity of catfish Ictaluridae nationally as a sport fish is well documented and angling for catfish on the Missouri River in Nebraska (NMR) is especially popular. Catfish monitoring program by the Nebraska Game and Parks Commission (NGPC) began in 1974 and several short-term evaluations of Channel Catfish population dynamics have been performed. However, no long term analyses of population characteristics have been conducted since the early 1990s. The focus of this research was to summarize the status of Channel Catfish populations in the NMR and give recommendations for future management. I summarized population characteristics, modeled length limit regulations, and …

Managing Wireless Security Risks In Medical Services, Brian Cusack, Akar Kyaw

Australian eHealth Informatics and Security Conference

Medical systems are designed for a range of end users from different professional skill groups and people who carry the devices in and on their bodies. Open, accurate, and efficient communication is the priority for medical systems and consequently strong protection costs are traded against the utility benefits for open systems. In this paper we assess the vulnerabilities created by the professional and end user expectations, and theorise ways to mitigate wireless security vulnerabilities. The benefits of wireless medical services are great in terms of efficiencies, mobility, and information management. These benefits may be realised by treating the vulnerabilities and …

Volume 52, Number 16: December 03, 2014, University Of North Dakota

University Letter Archive

No abstract provided.

The Economy Changes Trajectory, Anderson Center For Economic Research

Anderson Center Press Releases

No abstract provided.

Single- And Dual-Porosity Calibration And Long-Term Modeling Of Highly Conductive Floodplain Soils In The Ozark Ecoregion, Ryan P. Freiberger

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Phosphorus (P) is a critical nutrient for agriculture, but is also responsible for surface water enrichment that leads to algal growth. While P loading to surface waters has traditionally been thought to occur from surface runoff, contributions from subsurface transport can also be significant. Subsurface transport through gravelly soils in the Ozark ecoregion can have a significant, yet poorly-documented effect on P movement to groundwater.

Long-term P modeling was performed in HYDRUS-1D and 2D using data collected from short-term plot experiments featuring gravelly soils. Seven model levels were developed to illustrate a wide variety of laboratory and field conditions. Calibration …

Analysis Of Vibration Generated By The Rubbing Of Flat Surfaces, Zahrul Fuadi

Makara Journal of Technology

Among the phenomena that occur as a result of contact between two surfaces is friction sound, in which surface roughness is of great importance. In this study, the parameter of contact stiffness is used to explain the frequency characteristic of vibration generated by the rubbing of flat surfaces under a small load. A 3-disk configuration rubbing method was used, which provides a unique characteristic of the system's frequency response function containing specific information about the rubbing vibrations. It is shown that the peak frequency of the rubbing vibration can be explained by using a two-degrees-of-freedom model incorporating the parameter of …

Modified Design Of Pin-On-Ring Tribometer For Hip Joint Prostheses Measurement; Case Study On Salat Activity, Muhammad Khafidh, Jamari Jamari, Sulardjaka Sulardjaka, Mohamad Tauviqirrahman, Emile Van Der Heide

Makara Journal of Technology

Total hip replacement (THR) is one of the most successful orthopedic surgical procedures for replacing a broken hip joint. In THR, wear may occur at the articulating surface of the acetabular cup and the femoral head. In Indonesia, the country with the largest Muslim population in the world, most of the inhabitants do salat (praying) every day. THR users are banned from doing salat for fear it will damage the hip joint prostheses. The previous wear calculation methods on the hip joint prostheses use the gravimetric, coordinate measuring machine (CMM), profiler, and geometric method. The disadvantages of the previous methods …

Metabolic Engineering Of Oilseed Crops To Produce High Levels Of Novel Acetyl Glyceride Oils With Reduced Viscosity, Freezing Point And Calorific Value, Jinjie Liu, Adam Rice, Kathleen Mcglew, Vincent Shaw, Hyunwoo Park, Thomas E. Clemente, Mike Pollard, John Ohlrogge, Timothy P. Durrett

Department of Agronomy and Horticulture: Faculty Publications

Seed oils have proved recalcitrant to modification for the production of industrially useful lipids. Here, we demonstrate the successful metabolic engineering and subsequent field production of an oilseed crop with the highest accumulation of unusual oil achieved so far in transgenic plants. Previously, expression of the Euonymus alatus diacylglycerol acetyltransferase (EaDAcT) gene in wild-type Arabidopsis seeds resulted in the accumulation of 45 mol% of unusual 3-acetyl-1,2- diacyl-sn-glycerols (acetyl-TAGs) in the seed oil (Durrett et al., 2010 PNAS 107:9464). Expression of EaDAcT in dgat1 mutants compromised in their ability to synthesize regular triacylglycerols increased acetyl-TAGs to 65 mol%. Camelina and soybean …

Using Leaf-Off Lidar In Modeling Forest Canopy Structure And Assessing The Effect Of Spatial Resolution In Landscape Analyses, Jason R. Parent

Doctoral Dissertations

In recent years, the increasing availability of airborne Light Detection and Ranging (LiDAR) has allowed landscapes to be studied in unprecedented detail. These data are primarily acquired during leaf-off canopy conditions because it is optimal for modeling the bare earth terrain in deciduous forests. However, there has been limited research investigating the utility of leaf-off data for modeling forest canopy structure and land cover. Furthermore, given the far greater spatial and temporal abundance of moderate- and coarse-resolution remote sensing data, it would be advantageous to determine when coarser data can serve as a useful proxy for finer data in landscape …

Nocturnal Spotlight Surveys For Monitoring Scripps's Murrelets In At-Sea Congregations At Anacapa Island, California, Darrell L. Whitworth, Harry R. Carter

Monographs of the Western North American Naturalist

Concealed nest sites, mostly inaccessible breeding habitats, and nocturnal colony visitation have long hindered studies of Scripps’s Murrelets (Synthliboramphus scrippsi); but conspicuous and seasonally predictable at-sea congregations adjacent to nesting areas provide a valuable index for assessing murrelet colony size and population trends at all 12 breeding islands. We developed a boat-based nocturnal spotlight survey for counting murrelets in at-sea congregations at Anacapa Island, California. A high-intensity spotlight was used to count murrelets during standard surveys conducted on 2 parallel transects (1.9 km each) located 200 m (“inshore”) and 500 m (“offshore”) from shore. We conducted 130 standard …

The Current Volume 25 : Issue 14, Nova Southeastern University

Student Newspapers

No abstract provided.

Examining The Influence Of Shared Leadership And Political Skill On The Relationship Between Project Management Complexity And Project Team Effectiveness In Organizations, Cathy Cockrell

Human Resource Development Theses and Dissertations

Organizations are experiencing increasing complexity due to global competition, technological advances, and dynamic political and environmental circumstances. Therefore, organizations are driven to find new ways to stay competitive, including the increased use of project teams and the formulation of new types of project team leadership structures to manage complex and innovative work. The aim of this study was to examine shared leadership and political skill in project teams within the context of project management complexity, and the influence of these factors on project team effectiveness. A quantitative cross-sectional survey design was used as the approach for data collection. A pilot …

Taking The War To The Enemy: The Story Of Major Richard Clement, Travis Ueckert

Honors Theses

From the late 1930’s to the final moments of 1941, ordinary citizens of the United States witnessed the illusion of an isolated nation shatter with the global presence of Axis Nations. The U.S. took the initiative in eliminating international threats before they reached U.S. borders, resulting in everyday men and women having to learn about war along the way with usually little to no experience. Scholars who study war and memory face the challenge to capture the entirety and significance of a veteran’s experience, even those of the family members. Though the sacrifice demanded much, memories fade or are suppressed; …

Endoscopic Application Of A Compact Compound-Eye Camera, Keiichiro Kagawa, Shoji Kawahito

Makara Journal of Technology

A multi-functional compound-eye endoscope enabling multi-spectral imaging and variable field-of-view is presented, which is based on a compact compound-eye camera called TOMBO (thin observation module by bound optics). Narrow-band filters attached to some lenses provide snap-shot multi-band images. Fixed and movable mirrors are introduced to control the field of view, which realizes several observation modes such as three-dimensional shape measurement, wide field-of-view, and close-up observation.

Lateral Load Resistance Of Laminated Veneer Lumber Sengonwooden Joints With Wooden Dowels, Niken Palaeowati, Ali Awaludin, Suprapto Siswosukarto

Makara Journal of Technology

Analytical models for wooden-doweled joints need to be developed. The objective of this research is to determine whether the strength of wooden-doweled joints can be well predicted by equations developed for steel-doweled joints. In this experiment, various connection parameters, such as dowel diameter, species of the wooden dowel, and angle of joints, are studied. The joint specimens are loaded in a quasi-static state with four replications each. A5% offset diameter method is used to determine the lateral load resistance of the tested joints, while the predictions are evaluated by equations given in Indonesian National Standard (SNI) 7973-2013 and the European …

Proof Of Concept Test For Dual-Axis Resonant Phase-Locked Excitation (Phlex) Fatigue Testing Method For Wind Turbine Blades, Jenna Austin Beckwith

Doctoral Dissertations and Master's Theses

The installed capacity of wind turbines has grown steadily for the past decade with wind energy now providing 3.6-percent of the U.S.’s electricity supply [13]. This trend can be attributed to advancements in wind turbine technology and the ability to increase wind turbine sizes. As wind turbines grow in size, so do the loads experienced by the turbine. One of the most significant load increases is in the lead-lag direction of the wind turbine blades. The increase in lead-lag load is due to the increase in weight of the larger blades. Current wind turbine blades have lead-lag and flapwise loads …

Blast-Off: Determining Glioblastoma Goi Sequence Conservation Across Model Organisms, Joseph K. Kaplan

Theses

Glioblastoma multiforme (GBM) are aggressive brain tumors found in the nervous system of humans. Derived from glia such as astrocytes, oligodendrocytes and Schwannn cells, glioblastomas can develop throughout the nervous system, but are most commonly found in the brain. Prognosis following glioblastoma diagnosis is often very grim; only 3-5% of patients diagnosed with glioblastoma live beyond 36 months, therefore early detection and proper treatment are imperative. Scientists have studied the genetic factors linked to GBM development in humans and model organisms and determined a number of glioblastoma GOI. Many of the glioblastoma GOI have been previously identified as oncogenes such …

December 3, 2014, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Religion, Public Life And The State In Putin's Russia, Alexey D. Krindatch

Occasional Papers on Religion in Eastern Europe

No abstract provided.

Mechanisms Of Infrared Neural Stimulation, Vicente Lumbreras Cruz

Open Access Dissertations

Cochlear implants are currently the most effective solution for profound sensorineural hearing loss, and vestibular prostheses are under development to treat bilateral vestibulopathies. Electrical current spread in these neuroprostheses limits channel independence, and in some cases may impair device performance. In comparison to conventional electrical stimulation, optical stimuli that are spatially confined may result in a significant functional improvement. Pulsed infrared radiation (IR) allows direct stimulation of tissue without genetic or pharmacological manipulation, and has been shown to excite neurons. This study analyzes if pulsed IR (λ = 1863 nm) elicits intracellular Ca2+ ([Ca2+]i) transients in cultured neonatal rat spiral …

25 Year Club: 33rd Annual Gala, Western Michigan University

25 Year Club

25 Year Club: 33rd Annual Gala

December 2, 2014

• New Inductees
• Members
• Retirees

The Relationship Between Pain Sensitivity And Motor Adaptations, Irina Fedulow, Katherine S. Rudolph

Research Report Papers

The purpose of this study is to investigate the relationships between measures of central sensitization and CPM and how they impact motor adaptations in individuals without chronic pain conditions. To conduct this research, we decided to incorporate the “broken escalator phenomenon,” which is the unusual feeling that occurs when an individual steps onto an escalator or moving walkway that is broken and therefore not moving. The body responds with an anticipatory response that includes increased trunk sway and increased forward speed. The body adapts to the stationary walkway by reducing trunk sway and speed. Following that period of adaptation, if …