Digital Commons Network^™

การพยากรณ์ความต้องการและการกำหนดนโยบายพัสดุคงคลังผู้ผลิตยากรณีศึกษาบริษัท Aaa, ธราเทพ คำมูล

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษานี้มีวัตถุประสงค์เพื่อสร้างรูปแบบโมเดลการพยากรณ์ที่เหมาะสมให้กับสินค้าที่ทำรายได้หลักให้กับบริษัทกรณีศึกษา เนื่องจากในปัจจุบันบริษัทกรณีศึกษาไม่มีรูปแบบการพยากรณ์ยอดขายสินค้าไม่ชัดเจนโดยทำการพยากรณ์ความต้องการล่วงหน้าและทำการวัดค่าความคลาดเคลื่อน (Error) เพื่อเลือกรูปแบบที่เหมาะสมกับแต่ละสินค้า อีกทั้งยังทำการศึกษานโยบายพัสดุคงคลังในปัจจุบันของบริษัทกรณีศึกษา โดยมุ่งเน้นเป้าหมายไปที่การลดต้นทุนพัสดุคงคลัง โดยในปัจจุบันพบว่าบริษัทกรณีศึกษามีระดับพัสดุคงคลังสูงซึ่งมีความไม่สอดคล้องไปในแนวเดียวกับความต้องการทำให้บริษัทกรณีศึกษามีค่าการเก็บรักษาสินค้าสูงตามไปด้วยเช่นกัน โดยนำค่าพยากรณ์ที่ได้มาช่วยในการกำหนดนโยบายพัสดุคงคลังรูปแบบใหม่ขึ้นมาเพื่อเปรียบเทียบกับนโยบายพัสดุคงคลังรูปแบบปัจจุบันรวมทั้งใช้วิธีการจำลองสถานการณ์เพื่อสร้างนโยบายพัสดุคงคลังที่มีประสิทธิภาพมากขึ้น ผลการศึกษาพบว่าภายใต้ขอบเขตการวิจัยสินค้าแต่ละชนิดมีรูปแบบการพยากรณ์ที่แตกต่างกันโดยต้องคำนึงถึงหลายปัจจัย การวิจัยนี้สามารถแก้ปัญหาระดับพัสดุคงคลังของบริษัทกรณีศึกษาได้โดยนโยบายพัสดุคงรูปแบบใหม่สามารถลดต้นทุนรวมต่อปีได้หากเทียบกับนโยบายพัสดุคงคลังในรูปแบบปัจจุบัน

ความพร้อมของผู้ให้บริการด้านโลจิสติกส์ต่อการปรับใช้มาตรฐาน Gsdp, ธนวรรณ เกษแก้ว

Chulalongkorn University Theses and Dissertations (Chula ETD)

การวิจัยครั้งนี้มีวัตถุประสงค์เพื่อศึกษา 1) เพื่อศึกษาผลกระทบจากการบังคับใช้มาตรฐาน GSDP ต่อการจัดการการกระจายสินค้า 2) เพื่อวิเคราะห์ความพร้อมของผู้ประกอบการขนส่งในประเทศไทย 3) เพื่อสรุปประเด็นที่ผู้ประกอบการมีความพร้อมและที่ไม่พร้อมในการดำเนินงานตามมาตรฐาน GSDP การวิจัยครั้งนี้เป็นการวิจัยเชิงสำรวจกลุ่มตัวอย่างได้แก่ กลุ่มผู้ให้บริการโลจิสติกส์ทั้งรถขนส่งและคลังสินค้า จำนวน 77 ราย โดยใช้แบบสอบถามเป็นเครื่องมือเก็บรวบรวมข้อมูล และในส่วนของการวิเคราะห์ข้อมูลใช้สถิติค่าร้อยละค่าเฉลี่ย และส่วนเบี่ยงเบนมาตรฐาน โดยผลการวิจัยพบว่า 1) กลุ่มผู้ให้บริการโลจิสติกส์ของบริษัทแห่งหนึ่งในประเทศไทย มีความรู้พื้นฐานเกี่ยวกับตัวมาตรฐาน GSDP ในระดับสูงมาก เนื่องจากร้อยละ 76 สามารถทำแบบสอบถามได้ถูกต้องครบทั้ง 6 ข้อ 2) กลุ่มผู้ให้บริการโลจิสติกส์ของบริษัทแห่งหนึ่งในประเทศไทย มีความพร้อมในการปรับใช้มาตรฐาน GSDP เข้ากับการทำงานได้เป็นอย่างดี คือผลลัผธ์ออกมาที่ระบบมาก 3) แต่มีอยู่หนึ่งหัวข้อที่ กลุ่มผู้ให้บริการโลจิสติกส์ของบริษัทแห่งหนึ่งในประเทศไทยได้คะแนนความพร้อมอยู่ในระดับปานกลางต่างออกมาจากหัวข้ออื่น คือด้านความเหมาะสมของสถานที่ปฏิบัติงาน

The Garden Oasis: Observations In A Southern California Garden, Chris Tankersley

Department of Entomology: Distance Master of Science Projects

A garden can be a special place of relaxation and a corridor from which one can connect with the natural world and observe the complex relationships among the many organisms that make it their home. These organisms include a vast array of insects that contribute to the diversity of even the smallest garden. We purchased an unassuming house in a quiet Southern California suburban neighborhood that included about half an acre of property made up of mostly lawn and a dense menagerie of backyard shrubs and trees on a steep hillside, along with a pond that was in desperate need …

Overview Of The Insect Food And Feed Industry, Daniel J. Seckman

Department of Entomology: Distance Master of Science Projects

The entomophagy field is one that when you immerse yourself in it, you will feel like the entire world is talking about insects as food and feed. Yet, from the outside, the industry is virtually nonexistent. In the United States, the North American Coalition for Insect Agriculture (NACIA) is the leading organization dedicated to growing the insect food and feed sector. While the organization has grown extensively in recent years, most individuals in the food, feed, and entomological industry have never heard of the organization. The Wall Street Journal presents the annual Food Forum, which aims to “tackle the critical …

Forensic Entomology: Insect Succession, Northern Colorado, Thomas Nissen

Department of Entomology: Distance Master of Science Projects

Forensic entomology is considered a relatively new field of entomology yet insects have been around for millions of years. Insects have been associated with dead animals and humans for centuries. The remains of insects have been recorded from Ancient Egypt to the present time. Recent advancements have been with data presented to the courts that show that there is a specific order to insects arriving on a corpse and that order helps to determine time of death. This study investigates the order of insect succession in the northern front range area of Colorado.

Distribution Of Green Spaces In Omaha, Nebraska, Sofia Gavia

Department of Environmental Studies: Undergraduate Student Theses

The distribution of parks often depends on the races, ethnicity, and socioeconomic class of a community’s households. Parks and green spaces provides community residents recreational opportunities, economic benefits, and improves community public health. The unequal distribution of parks and green spaces in a city is a social issue found across the country. Limited research has been done on the relationship between green spaces and park access and social justice in Omaha, Nebraska. This study discusses whether there is a difference in how parks are distributed in Omaha, NE in terms of social justice and equitable distribution. Research is done using …

Analysis Of Drinking Water Disinfection Options, Bryce Carlen

Department of Environmental Studies: Undergraduate Student Theses

This thesis utilizes existing research to provide a framework that can be used for community and disaster planning. It analyses the critical process of water disinfection for drinking water. It focuses on chemical, distillation, and ultraviolet treatments in both centralized and point-of-use treatment. This thesis aims to provide a method for communities to determine the optimal water treatment, utilizing a framework based on weighted criteria. The decision-making framework is an easy-to-use and flexible process that communities can tailor for their specific needs to find the optimal treatment relative to their needs. In this study’s generalized example, ultraviolet treatment and distillation …

Audit Of Waste Collected Over One Week From Superior Dental Health Of Lincoln, Bryclin Alstrom

Department of Environmental Studies: Undergraduate Student Theses

A waste audit of Superior Dental Health of Lincoln was conducted in order to propagate the implementation of sustainable waste management practices within the company. Differentiating between hazardous waste and solid waste is necessary for environmentally friendly waste management and ceasing the spread of infectious pathogens. The audit identified nine different materials contributing to the biomedical waste stream of the company. Of which, personal protective equipment (PPE) is of major concern due to the financial commitment necessary to acquire / dispose of these products, as well as the strain in supply due to the current COVID-19 pandemic. The results of …

Long-Term Impacts Of 2019 Flood Experiences On Nebraskans’ Climate Change Perceptions, Caitlin Kingsley

Department of Environmental Studies: Undergraduate Student Theses

This study examines climate change perceptions in Nebraskans who experienced or witnessed flooding in March 2019. The purpose is to determine the impacts of 2019 flood experiences on Nebraskans’ climate change perceptions. The objectives are to determine the influence of flood proximity on changes in climate change perceptions, determine whether 2019 flooding had long-term impacts on Nebraskans’ climate change perceptions, and determine the influence of personal background factors on perceptions. A three-phase interview was utilized to collect background information, climate change perceptions, 2019 flood experiences, and relationships between 2019 flood experiences and climate change perceptions. Background information and climate change …

The Effect Of Urban Forests On Air Quality And Human Health, Chance Wilken

Department of Environmental Studies: Undergraduate Student Theses

Following the industrial revolution, the impacts of climate change have been increasingly impactful on both rural and urban populations around the world. As population density and urbanization increase throughout the globe, the influences of climate change will continue to play a dangerous role in its influence on people's lives. Due to negative health impacts on humans and the economic costs in cities, climate change is one of the most important issues to understand in the 21st century. Air quality and human health are two components of climate change that are impacted most significantly. The bulk of this work is to …

Designing A Mobile App And Online Directory To Increase The Visibility Of Environmental Organizations In A Community, Kayla Vondracek

Department of Environmental Studies: Undergraduate Student Theses

Concern for environmental degradation, natural resource depletion, and public health has long been a necessary part of a strongly developed and sophisticated society. Humans are primarily responsible for the depletion of the natural environment as it supplies the commodities required to ensure the long-term survival of civilizations. As cultures continue to evolve, so does the practice of land stewardship and protection of resources. With the necessary expansion of industry and housing needed to support a rising human population, the management of natural resources, pollution control, and the environment has become increasingly important to people worldwide. Bernstein and Szuster (2019) suggest …

Investigating Predation Risk Experienced By Wintering Birds At A Supplied-Food Garden, Madison Smart

Department of Environmental Studies: Undergraduate Student Theses

Wintering birds are particularly susceptible to predation while foraging at feeders. The ‘starvation vs. predation’ survival trade-off is felt most acutely in winter because energy demands are higher compared to milder seasons. This study investigated sense of predation risk experienced by members of a wintering mixed-species flock. The objective was to determine which species take on increased predation risk in order to forage at feeders, and if there was bias for one species over another. A raptor (experimental) and non-raptor (control) model were presented to a mixed-flock at feeders within Pioneers Park Nature Center. The first species to return to …

Precipitation Impact On Crop Yield, Ian Ritchie

Department of Environmental Studies: Undergraduate Student Theses

Climate change is a massive force impacting and changing many weather trends, including precipitation rates. This thesis will study the relationship between crop yield and changes in precipitation. Understanding crop yield is important in determining overall crop supply every year as well as crop prices. Many factors can have either a negative or a positive impact on crop yields. One of these many factors is precipitation. This thesis looks directly at the impacts of changes in precipitation on corn yield in Iowa from 1991-2020. To do this, a regression analysis was performed to compare changes in yearly precipitation rates for …

Analyzing The Effect Of Second-Class Currents On Neutron Beta Decay Observables And The Effect Of Thomas Rotation On The Relativistic Transformations Of Electromagnetic Fields, Lakshya Malhotra

Theses and Dissertations--Physics and Astronomy

The next generation of neutron beta decay measurements will attempt to analyze various beta decay observables of up to O(10^-4) precision. At this level of experimental precision, the effects of second-class currents will contribute theoretical uncertainties to the interpretation of these measurements. Therefore, it is important to investigate the effects of these second-class currents on decay parameters, such as the Fierz interference term b which is linear in beyond standard model couplings. A maximum likelihood statistical framework and Rfit techniques are employed to study these second-class currents effects. Inputs to the Rfit technique are obtained through …

Strongly Correlated Phases In Quantum Hall Systems, Amartya Saha

Theses and Dissertations--Physics and Astronomy

Quantum Hall systems have a one-body energy spectrum consisting of dispersion-less Landau levels. Electron-electron interactions thus dominate in partially filled Landau levels, which exhibit a myriad of strongly correlated phases such as quantum hall ferromagnets and fractional quantum Hall phases. We study two examples of these phenomena.

In the first project, we explore the ground state of a system with an interface between two semi-infinite regions with fillings ν= 4 and ν= 3 respectively. The width of the interface can be controlled by varying the background potential, which provides an additional tuning parameter. For a certain range of …

Effective Field Theory Applications: From Dark Matter To Neutrino Nucleon Scattering, Qing Chen

Theses and Dissertations--Physics and Astronomy

Weakly-interacting-massive-particles (WIMPs) are a large class of viable dark matter candidates. We compute cross sections for electroweak-doublet WIMPs scattering on atomic nuclei, at leading and subleading order using heavy WIMP effective field theory. Neutrino-nucleon charged current elastic scattering is an important process in the detectors of long baseline accelerator neutrino oscillation experiments. We compute QED radiative corrections to this process employing soft-collinear effective field theory.

Magnetization Dynamics In Kagome Artificial Spin Ice Considering The Effect Of Vertex And Geometrical Lattice Distortion, Ali Frotanpour

Theses and Dissertations--Physics and Astronomy

Artificial spin ices (ASI) have been shown to exhibit dynamic magnetic responses that are dramatically different from plane magnetic thin films. A number of magnetic ASI have been fabricated and measured in recent years. However, some important effects including influence of vertex and geometrical distortion on their dynamic response have not been addressed. This dissertation adopts Ferromagnetic Resonance (FMR) spectroscopy to study magnetization dynamics in fabricated artificial spin ices with a contentiously distorted Honeycomb geometry with the specific goal of exploring how the vertex and lattice distortion affect the dynamic magnetic response. Samples were patterned using electron beam lithography techniques. …

Topics In Quantum Quench And Entanglement, Sinong Liu

Theses and Dissertations--Physics and Astronomy

The dissertation includes two parts.

In Part I, we study non-equilibrium phenomena in various models associated with global quantum quench. It is known that local quantities, when subjected to global quantum quench across or approaching critical points, exhibit a variety of universal scaling behaviors at various quench rates. To investigate if similar scaling holds for non-local quantities, we consider the scaling behavior of circuit complexity under quantum quench across the critical massless point in Majorana fermion field theory of the one-dimensional integrable transverse field Ising model and find it obeys such scaling. To investigate if similar scaling holds for non-relativistic …

Optical Metasurfaces, Fatih Balli

Theses and Dissertations--Physics and Astronomy

Traditional optical elements, such as refractive lenses, mirrors, phase plates and polarizers have been used for various purposes such as imaging systems, lithographic printing, astronomical observations and display technology. Despite their long-term achievements, they can be bulky and not suitable for miniaturization. On the other hand, recent nanotechnology advances allowed us to manufacture micro and nanoscale devices with ultra-compact sizes. Metasurfaces, 2D engineered artificial interfaces, have emerged as candidates to replace traditional refractive lenses with ultra-thin miniaturized optical elements. They possess sub-wavelength unit cell structures with a specific geometry and material selection. Each unit cell can uniquely tailor the phase, …

Exploring The X-Ray Universe In The Microcalorimeter Era, Priyanka Chakraborty

Theses and Dissertations--Physics and Astronomy

Next-generation microcalorimeter missions like XRISM and Athena will revolutionize X-ray spectroscopy by offering a plethora of high-resolution X-ray spectra. Interpreting these observations requires a complete understanding of how matter interacts with light through such microphysical processes as absorption and excitation. I developed a framework describing the atomic processes for both collisionally-ionized and photoionized plasmas over a wide range of column densities. Through various line-intensity and line-ratio spectral diagnostics, I established four asymptotic limits; Cases A, B, C, and D. These apply to the formation of lines in H- and He-like systems. This is the first work describing these limits in …

Axial Symmetry Tests Of Milky Way Disk Stars Probe The Galaxy's Matter Distribution, Austin Hinkel

Theses and Dissertations--Physics and Astronomy

In Galactic dynamics, various assumptions have been employed for mathematical ease. These assumptions are approximately valid, but departures reveal perturbations on our Galaxy. In this dissertation, we select a complete, Gaia DR2 data set, and using this data, we find evidence for axial symmetry breaking in the Galaxy, away from the spiral arms and the Galactic bar. This asymmetry is compatible with a prolate dark matter halo tilted with respect to the disk, with a long axis pointing in the direction of the Magellanic Clouds, and this matches an inventory of nearby torques. These asymmetries vary North and South of …

Business Week Program, March 22-25, 2021, Illinois State University, College Of Business

Business Week

No abstract provided.

Voices Of Chinese International Students: A Critical Understanding Of Their Experiences In The United States, Shudao Zhang

Doctoral Dissertations

This qualitative study investigated the lived experiences of Chinese international students in the United States. It focused on their academic learning, sociocultural relationship, self-reflection and their identity development. This study addressed the active role of international students as participants who can manage cross-cultural difficulties as well as make new interpretations of their life in the host country. This study adopted three theoretical frameworks - transnationalism, transformative learning theory, and social identity theory - to present the intricate educational and social context in study abroad. Through in-depth interviews with eight Chinese students at a private university in California, together with the …

Interests Served And Interests Converged: A Mixed-Methods Critical Policy Analysis Of The California Math Placement Act, Chalesea Schuler

Doctoral Dissertations

The California Mathematics Placement Act was created to eliminate bias within math placement and increase advanced math enrollment, particularly for subgroups who have been historically excluded. Using a Critical Race Theory lens, this study compared the stated goals of policy proponents with whose interests are actually served, and whose are not served, by the policy. This study used a mixed-methods research design to conduct a critical policy analysis of the California Math Placement Act. The qualitative portion of this study used archival document analysis to determine the origins of the act and the interests that converged to pass it. The …

Effects Of Microcystis Aeruginosa On New Jersey Aquatic Benthic Macroinvertebrates, Stephanie Beck

Theses, Dissertations and Culminating Projects

As increases in anthropogenic eutrophication and climate change contribute to more severe and frequent cyanobacterial harmful algal blooms in freshwater ecosystems worldwide, understanding the effects and consequences cyanobacterial blooms have on aquatic organisms is crucial. Microcystis aeruginosa is one of the most common cyanobacteria taxa found in cyanobacterial blooms, producing a number of toxins including Microcystins. This study examined the effects of Microcystis aeruginosa on aquatic benthic macroinvertebrates, specifically the pollution intolerant taxa Ephemeroptera, the pollution moderately intolerant taxa Zygoptera, and the pollution tolerant taxa Chironomidae. In a controlled lab environment, macroinvertebrates were exposed to approximately 100,000 cells/ml of Microcystis …

Bipartite, Size, And Online Ramsey Numbers Of Some Cycles And Paths, Eliyahu Schudrich

Theses, Dissertations and Culminating Projects

The basic premise of Ramsey Theory states that in a sufficiently large system, complete disorder is impossible. One instance from the world of graph theory says that given two fixed graphs F and H, there exists a finitely large graph G such that any red/blue edge coloring of the edges of G will produce a red copy of F or a blue copy of H. Much research has been conducted in recent decades on quantifying exactly how large G must be if we consider different classes of graphs for F and H. In this thesis, we explore several Ramsey- type …

Double Pulse Mosfet Tester, Craig Simpson

Electrical and Computer Engineering

The Double Pulse MOSFET tester is a system used to characterize losses in Silicon-Carbide (SiC) high-power MOSFET semiconductor devices.

• Improve characterization of SiC switching losses
• Allow for better educated design decisions for power converters using these devices
• Perform automated sweeps of operating conditions across voltage, current, and temperature

Objectives:

• Test switching losses for SiC XM3 half bridge MOSFET modules
• Improve understanding of losses in SiC MOSFETs
• Allow for more informed decisions for power converters using these devices

A Survey Of Overlapping Surgery Policies At U.S. Hospitals, Margaret B. Mitchell, Catherine Hammack-Aviran, Ellen W. Clayton, Alexander Langerman

Law Faculty Scholarship

The authors surveyed hospitals across the country on their policies regarding overlapping surgery, and found large variation between hospitals in how this practice is regulated. Specifically, institutions chose to define “critical portions” in a variety of ways, ultimately affecting not only surgical efficiency but also the autonomy of surgical trainees and patient experiences at these different hospitals.

Front Matter

SMU Law Review

No abstract provided.

Howdy, Partner: Challenges With State Takeovers And Charter Partnerships In Texas School Districts, Hannah Luke

SMU Law Review

Since President Johnson passed the first federal education legislation in the 1960s, lawmakers at both the state and federal level have been searching for effective ways to hold public schools accountable. The 2015 amendments to the Elementary and Secondary Education Act gave states increased flexibility to implement their own innovative accountability measures, and with this newfound authority, Texas passed two laws: House Bill 1842 (HB 1842) in 2015 and Senate Bill 1882 (SB 1882) in 2017. The stringent measures in HB 1842 threaten struggling schools with state takeover if they consistently fail to meet standards, while SB 1882 incentivizes schools …