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Articles 49861 - 49890 of 721030
Full-Text Articles in Entire DC Network
Density-Dependence Inside A Marine Protected Area Increases Natural Mortality And Stunts The Growth Of A Spiny Lobster, Emma-Jade Tuffley, Simon De Lestang
Density-Dependence Inside A Marine Protected Area Increases Natural Mortality And Stunts The Growth Of A Spiny Lobster, Emma-Jade Tuffley, Simon De Lestang
Fisheries Research Articles
Sustainable fisheries management often requires the modelling of stocks under unfished conditions, when the influence of population densities on animal growth and mortality can be substantial. This can be especially true for species such as spiny rock lobster, which are very habitat specific. Using western rock lobster (Panulirus cygnus) tag-recapture data from adjacent and similar fished and unfished areas, the key life history parameters of natural mortality and growth were examined and compared under different population density scenarios. In an area representative of virgin biomass levels, lobsters exhibited reduced growth rates and a substantially higher rate of natural mortality …
C-H Amination Chemistry Mediated By Trinuclear Cu(I) Sites Supported By A Ligand Scaffold Featuring An Arene Platform And Tetramethylguanidinyl Residues, Meenakshi Sharma, Reece M. Fritz, Himanshu Bhatia, Joseph O. Adebanjo, Zhou Lu, Mohammad A. Omary, Thomas R. Cundari, Amitava Choudhury, Pericles Stavropoulos
C-H Amination Chemistry Mediated By Trinuclear Cu(I) Sites Supported By A Ligand Scaffold Featuring An Arene Platform And Tetramethylguanidinyl Residues, Meenakshi Sharma, Reece M. Fritz, Himanshu Bhatia, Joseph O. Adebanjo, Zhou Lu, Mohammad A. Omary, Thomas R. Cundari, Amitava Choudhury, Pericles Stavropoulos
Chemistry Faculty Research & Creative Works
Tripodal ligands that can encapsulate single or multiple metal sites in C3-symmetric geometric configurations constitute valuable targets for novel catalysts. Of particular interest in ligand development are efforts toward incorporating apical elements that exhibit little if any electron donicity, to enhance the electrophilic nature of a trans positioned active oxidant (e.g., metal-oxo, -nitrene). The tripodal ligand TMG3trphen-Arene has been synthesized, featuring an arene platform 1,3,5-substituted with phenylene arms possessing tetramethylguanidinyl (TMG) residues. Compound [(TMG3trphen-Arene) Cu3(μ-Cl)3] has been subsequently synthesized by extracting a Cu3(μ-Cl)3 cluster from anhydrous CuCl and shown to encapsulate a crown-shaped …
Size Fractionation Informs Microbial Community Composition And Interactions In The Eastern Tropical North Pacific Ocean, Madeleine A. Thompson, David L. Valentine, Xuefeng Peng
Size Fractionation Informs Microbial Community Composition And Interactions In The Eastern Tropical North Pacific Ocean, Madeleine A. Thompson, David L. Valentine, Xuefeng Peng
Faculty Publications
Marine microorganisms are drivers of biogeochemical cycles in the world’s oceans, including oxygen minimum zones (OMZs). Using a metabarcoding survey of the 16S rRNA gene, we investigated prokaryotic communities, as well as their potential interactions with fungi, at the coastal, offshore, and peripheral OMZ of the eastern tropical North Pacific. Water samples were collected along a vertical oxygen gradient, and large volumes were filtered through three size fractions, 0.22, 2, and 22 µm. The changes in community composition along the oxygen gradient were driven by Planctomycetota, Bacteroidota, Verrucomicrobiota, and Gammaproteobacteria; most are known degraders of marine polysaccharides and usually associated …
The Role Of Artificial Intelligence Techniques In Enhancing Project Completion Speed: A Study On Using Lstm Networks For Predicting Delay Times, Abdulrahman Ragheb Abdulrazak, Awss Hatim Mahmoud
The Role Of Artificial Intelligence Techniques In Enhancing Project Completion Speed: A Study On Using Lstm Networks For Predicting Delay Times, Abdulrahman Ragheb Abdulrazak, Awss Hatim Mahmoud
Journal of Economics and Administrative Sciences
This study aimed to investigate mechanisms for enhancing project completion speed through the application of artificial intelligence techniques. The study adopted the approach of "Using LSTM Networks for Predicting Project Delay Times," and the researchers utilized data from 3530 residential units for training, testing, and prediction. Selecting project delay times as a focus was driven by their significant impact on vital project completion. The research problem centers around the main question, "Can LSTM networks be successfully used to predict project delay times?" The significance of the study lies in utilizing Long Short-Term Memory (LSTM) neural network techniques to improve the …
The Fuzziness Models With The Proposed New Conjugate Gradient Method For The Classification Of High-Dimensional Data In Bioinformatics, Omar Qusay Alshebly, Suhail Najm Abdulla
The Fuzziness Models With The Proposed New Conjugate Gradient Method For The Classification Of High-Dimensional Data In Bioinformatics, Omar Qusay Alshebly, Suhail Najm Abdulla
Journal of Economics and Administrative Sciences
The development of the subject of bioinformatics may be attributed to the exponential growth of biological data, namely the huge amount of high-dimensional gene expression data. The discipline of bioinformatics efficiently tackles issues in molecular biology through the use of optimization, computer science, and statistical methods. The present study introduces a new optimization strategy, namely the proposed conjugate gradient method (PNCG), for the purpose of learning a fuzzy neural network model using the Takagi-Sugeno approach. This study presented a novel algorithm that addresses the issue of delayed convergence seen in the Polak Ribière Polyak (PRP) and Liu-Storey (LS) techniques by …
A Comparison Between Speckman And Bayesian Estimation Method Of A Semiparametric Balanced Longitudinal Data Model, Ahmed Abdulsamad Habeeb, Qutaiba N. Nayef Al-Qazaz
A Comparison Between Speckman And Bayesian Estimation Method Of A Semiparametric Balanced Longitudinal Data Model, Ahmed Abdulsamad Habeeb, Qutaiba N. Nayef Al-Qazaz
Journal of Economics and Administrative Sciences
This paper aims to use semi-parametric regression to balanced longitudinal data model, where the parametric regression models suffer from the problem of strict constraints, while non-parametric regression models, despite their flexibility, suffer from the problem of the curse of dimensionality. Consequently, semi-parametric regression is an ideal solution to get rid of the problems that parametric and non-parametric regression suffer from. The great advantage of this model is that it contains all the positive features included in the previous two models, such as containing strict restrictions in its parametric component, complete flexibility in its non-parametric component, and clarity of the interaction …
Some Fuzzy Least Squares Estimators For Regression Model Using Different Kernel Functions, Areej Ibrahim Tawfeeq, Emad Hazim Aboudi
Some Fuzzy Least Squares Estimators For Regression Model Using Different Kernel Functions, Areej Ibrahim Tawfeeq, Emad Hazim Aboudi
Journal of Economics and Administrative Sciences
This paper presents a method for addressing the issue of outliers in fuzzy data. The method involves calculating a new distance between fuzzy numbers using various kernel functions, based on the fuzzy least squares method. The parameters of the fuzzy regression model were estimated in cases where the explanatory variables were non-fuzzy, the parameters were fuzzy, and the response variable was both fuzzy and an outlier. These estimators were then compared to the Fuzzy Least Squares method (FLS) using Mean Square Error (MSE) through simulations with different sample sizes (25, 50, 100, 150) and levels of outliers (0, 0.10, 0.20, …
A Hybrid Model For Financial Forecasting Based On Maximal Overlap Discrete Wavelet Transform: Evidence From Chinese Exchange Rates, Bouraida Burhan, Firas A. Mohammed Almohana
A Hybrid Model For Financial Forecasting Based On Maximal Overlap Discrete Wavelet Transform: Evidence From Chinese Exchange Rates, Bouraida Burhan, Firas A. Mohammed Almohana
Journal of Economics and Administrative Sciences
In some time series, especially financial time series, the high/low frequency sometimes occurs in short time scale, or for a specific period, the phenomena happen such that not observed in the rest of the time series; in the situation, decomposition of the time series into constitutive series can be very useful ,because the wavelet transform has the ability to transform the time series into low-and-high-frequency information, which allows detecting trends, breakdown points, and discontinuities in the data that may it is lost when other analysis methods are used. to cope with non-stationary time series forecasting and with the aim of …
A Linear Programming Method For Finding The Critical Path And The Desired Time To Complete The Project, Muna Shaker Salman
A Linear Programming Method For Finding The Critical Path And The Desired Time To Complete The Project, Muna Shaker Salman
Journal of Economics and Administrative Sciences
The Nineveh Grain Store project is considered one of the important projects in the Ministry of Commerce/General Company for Grain Trade in general and Nineveh Governorate in particular. The research problem focused on the fact that many projects are slow and not completed on time, and the reason is the lack of keeping pace with the technological development of developed countries at the present time, which leads to delaying the duration of project completion, and this in turn leads to high costs and thus failure to complete the project on time.The main objective of this research is to use the …
Role Of Financial Reporting On Carbon Emissions In Enhancing The Relevance Of Accounting Information, Sana Tuama Kudair, Lubna Zaid Ibrahim
Role Of Financial Reporting On Carbon Emissions In Enhancing The Relevance Of Accounting Information, Sana Tuama Kudair, Lubna Zaid Ibrahim
Journal of Economics and Administrative Sciences
In an effort to enhance the applicability of accounting data for international oil corporations operating in Iraq, this study delves into the role of Financial Reporting on Carbon Emissions (FRCE). The researchers explore the overarching concept and significance of the Relevance of Accounting Information (RAI) in general, with a specific focus on its application to accounting information related to carbon emissions. The study also addresses the financial reporting of carbon emissions in industrial companies. Using two mathematical models, namely the Informational Content Model (ICM) and Autoregressive Integrated Moving Average (ARIMA), the researchers conduct an in-depth analysis of eleven years' worth …
Mechanics Cognitive Diagnostic: Mathematics Skills Tested In Introductory Physics Courses, Vy Le, Ben Van Dusen, Jayson M. Nissen, Xiuxiu Tang, Yuxiao Zhang, Hua Hua Chang, Jason Morphew
Mechanics Cognitive Diagnostic: Mathematics Skills Tested In Introductory Physics Courses, Vy Le, Ben Van Dusen, Jayson M. Nissen, Xiuxiu Tang, Yuxiao Zhang, Hua Hua Chang, Jason Morphew
School of Engineering Education Faculty Publications
Physics instructors and education researchers use research-based assessments (RBAs) to evaluate students' preparation for physics courses. This preparation can cover a wide range of constructs including mathematics and physics content. Using separate mathematics and physics RBAs consumes course time. We are developing a new RBA for introductory mechanics as an online test using both computerized adaptive testing and cognitive diagnostic models. This design allows the adaptive RBA to assess mathematics and physics content knowledge within a single assessment. In this article, we used an evidence-centered design framework to inform the extent to which our models of skills students develop in …
Characterising Stem Ways Of Thinking In Engineering Design (Ed)-Based Tasks, Ravishankar Chatta Subramaniam, Caden L’Fontaine, Amir Bralin, Jason Morphew, Carina M. Rebello, Sanjay Rebello
Characterising Stem Ways Of Thinking In Engineering Design (Ed)-Based Tasks, Ravishankar Chatta Subramaniam, Caden L’Fontaine, Amir Bralin, Jason Morphew, Carina M. Rebello, Sanjay Rebello
School of Engineering Education Faculty Publications
Investigating students' thinking in routine classroom tasks, especially in science and engineering, is crucial. Given the rising interest in STEM Ways of Thinking (SWoT), in this exploratory study, we focus on two multi-week Engineering Design tasks within an undergraduate physics laboratory. Given that the term 'ways of thinking' has varied interpretations, we aim to further the discourse by identifying four SWoTs: Design Thinking, Physics Concepts, Mathematical Constructs, and Metacognitive Reflection. Analyzing discussions from 14 student-groups reveals notable differences in how students solve an instructor-assigned challenge given earlier in the semester and a student-generated challenge later in the semester. Students considered …
Development And Benchmark Of Polarizable Models For Ions, Luke Landry
Development And Benchmark Of Polarizable Models For Ions, Luke Landry
Dissertations
Metalloproteins are ubiquitous in biology, playing crucial roles in diverse processes. Meanwhile, molecular simulations have become an important tool in scientific research. To accurately simulate metalloprotein systems, accounting for polarization and charge transfer effects is required. The fluctuating charge (FQ) model can effectively simulate the charge transfer effect, but the existing models often lack specificity for metalloproteins. In our research, a tailored FQ model for zinc-containing metalloproteins, leveraging the extended charge equilibration (EQeq) scheme, was introduced. CM5 charges were used as the target in our model parameterization, which offers advantages over RESP/CHELPG charges. Most notably, CM5 charges hold independence over …
The Role Of Digital Marketing Tools In Marketing Literacy: An Exploratory Study From Some Customer's Perspective Of Earthlink Internet Services Company, Mohammed Edan Al Khazraje
The Role Of Digital Marketing Tools In Marketing Literacy: An Exploratory Study From Some Customer's Perspective Of Earthlink Internet Services Company, Mohammed Edan Al Khazraje
Journal of Economics and Administrative Sciences
Purpose: This research discusses the nature of the relationship between digital marketing tools and marketing literacy. Theoretical framework: The topic of marketing literacy is a modern marketing topic, (Rahmanto et al., 2023). Several researchers have reported good results on the impact of social media on digital literacy (Arafah and Hasyim, 2022), digital marketing, and digital literacy (Suparno et al., 2023). However, there is a scarcity of research addressing the impact of digital marketing tools on marketing literacy. Design/methodology/approach: This study relied on the descriptive analytical approach in collecting and analyzing data and arriving at the results. Earthlink Company was chosen …
The Bi-Level Programming Approach To Improve The Inventory Control System With A Practical Application, Othman Atiya Wardil, Samera Khaleel Ibrahim
The Bi-Level Programming Approach To Improve The Inventory Control System With A Practical Application, Othman Atiya Wardil, Samera Khaleel Ibrahim
Journal of Economics and Administrative Sciences
In this research, we investigated addressing the challenges associated with the seasonal allergic medical drug inventory system. The focus was on determining the optimal demand by calculating the Economic Order Quantity (EOQ) and achieving the lowest cost within the Pharmaceutical Industries and Medical Supplies company in Samarra. The primary objective was to efficiently meet the demand for seasonal allergy medications by identifying the optimal demand for medical drugs. The study encompassed two types of seasonal allergy medications, namely Samatifen drink and VALIAPAM 2 pills. The calculation of the lowest cost involved two methods: the multi-component production model without deficit, with …
Comparison Of Some Wavelet Transformations To Estimate Nonparametric Regression Function, Saad Kadem Hamza
Comparison Of Some Wavelet Transformations To Estimate Nonparametric Regression Function, Saad Kadem Hamza
Journal of Economics and Administrative Sciences
The purpose of this article is to improve and minimize noise from the signal by studying wavelet transforms and showing how to use the most effective ones for processing and analysis. As both the Discrete Wavelet Transformation method was used, we will outline some transformation techniques along with the methodology for applying them to remove noise from the signal. Proceeds based on the threshold value and the threshold functions Lifting Transformation, Wavelet Transformation, and Packet Discrete Wavelet Transformation. Using AMSE, A comparison was made between them , and the best was selected. When the aforementioned techniques were applied to actual …
Morphometric And Meristic Differentiation Among Five Populations Of Delminichthys Ghetaldii (Actinopterygii, Cyprinidae) From Five Karst Fields In Eastern Herzegovina, Dušanka Berak Čihorić, Ana Marić, Danilo Mrdak, Predrag Simonović
Morphometric And Meristic Differentiation Among Five Populations Of Delminichthys Ghetaldii (Actinopterygii, Cyprinidae) From Five Karst Fields In Eastern Herzegovina, Dušanka Berak Čihorić, Ana Marić, Danilo Mrdak, Predrag Simonović
Turkish Journal of Zoology
The primary objectives of this study were to advance our understanding of the morphological intricacies exhibited by the endemic fish species, Delminichthys ghetaldii, commonly known as the Trebinje minnow, and to determine intraspecific morphological variability. The study involved the examination of 76 mature specimens collected from five distinct karst fields located within the Dinaric region of Eastern Herzegovina, Bosnia and Herzegovina, since the year 2018. A comprehensive analysis of 22 morphometric and 8 meristic characters was conducted to unravel the underlying patterns of variation. Discriminant Function Analysis was employed for the thorough investigation of morphometric traits, whereas Canonical Correspondence Analysis …
Saas Application Maturity Assessment Model, Saiqa Aleem, Rabia Batool, Shayma Alkobaisi, Faheem Ahmed, Asad Masood Khattak
Saas Application Maturity Assessment Model, Saiqa Aleem, Rabia Batool, Shayma Alkobaisi, Faheem Ahmed, Asad Masood Khattak
All Works
Software-as-a-service (SaaS), as a software delivery model, has received substantial attention from software providers and users alike. In recent years, it has become one of the most promising service delivery models in cloud computing. Many existing companies are transferring their business into the SaaS delivery model. Network vendors also migrate to a SaaS business model by offering on-demand remote IT support. This increasingly competitive landscape and the variety in markets have imposed many challenges for SaaS developers and vendors and made it difficult to find a consensus on the factors contributing to the positive performance of SaaS businesses. This paper …
Unpublished Letters Of John James Audubon And Spencer F Baird, Ruthven Deane
Unpublished Letters Of John James Audubon And Spencer F Baird, Ruthven Deane
The Auk
No abstract provided.
An Astronomical Determination Of The Heights Of Birds During Nocturnal Migration, Frederic W. Carpenter
An Astronomical Determination Of The Heights Of Birds During Nocturnal Migration, Frederic W. Carpenter
The Auk
No abstract provided.
The International Catalogue Of Scientific Literature, J. A. Allen
The International Catalogue Of Scientific Literature, J. A. Allen
The Auk
No abstract provided.
The Nocturnal Flight Of Migrating Birds, O. G. Libby
Notes And News, The Auk
Newton's Dictionary Of Birds: Part Iv, E. C.
Notes And News, The Auk
The Evolution Of The Colors Of North American Land Birds-- A Reply To Criticism, The Auk
The Evolution Of The Colors Of North American Land Birds-- A Reply To Criticism, The Auk
The Auk
No abstract provided.
Birds Of British Columbia And Washington, The Auk
Notes And News, The Auk
Mysopeds: A Need For Increased Awareness, Understanding, And Training, Jerrod Brown, Cody Charette
Mysopeds: A Need For Increased Awareness, Understanding, And Training, Jerrod Brown, Cody Charette
Forensic Scholars Today
No abstract provided.
Fetal Alcohol Spectrum Disorder (Fasd) In Detoxification Centers: A Call On Withdrawal Management Professionals To Become Fasd-Informed, Jerrod Brown, Rae Mitten, Cody Charette, Bob Rohret
Fetal Alcohol Spectrum Disorder (Fasd) In Detoxification Centers: A Call On Withdrawal Management Professionals To Become Fasd-Informed, Jerrod Brown, Rae Mitten, Cody Charette, Bob Rohret
Forensic Scholars Today
This article explores the challenges associated with identifying and diagnosing fetal alcohol spectrum disorder (FASD) in detoxification centers throughout the United States. Detoxification centers are natural entry points to the health care system for many individuals with complex health conditions. These facilities continue to be under utilized as a portal for screening, identifying, diagnosing, and treating patients with FASD. The purpose of this article is to increase awareness about the tremendous potential detoxification centers have for addressing these needs through the services they offer. Additionally, strategies for improving FASD services within these settings are discussed. This article assumes the reader …