11,083 results on '"D. A. Welch"'
Search Results
202. Smart Mixture Design Can Steer the Fate of Root-Derived Carbon Into Mineral-Associated and Particulate Organic Matter in Intensively Managed Grasslands.
- Author
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Mortensen EØ, Abalos D, Engedal T, Lægsgaard AK, Enggrob K, Mueller CW, and Rasmussen J
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- Minerals analysis, Minerals chemistry, Fabaceae chemistry, Particulate Matter analysis, Poaceae chemistry, Poaceae growth & development, Grassland, Plant Roots chemistry, Carbon analysis, Soil chemistry, Lolium growth & development, Lolium chemistry
- Abstract
Species choice and richness in intensively managed grassland mixtures regulate soil carbon (C) input via rhizodeposition, with potential consequences for long-term soil organic carbon storage. Based on a field trial with different grass-legume-forb mixtures, we removed roots from the soil, which was then subjected to particle-size fractionation to trace fresh organic carbon (net C rhizodeposition) into particulate organic matter (POM) and mineral-associated organic matter (MAOM). We related these C input fractions to root traits. Using multiple-pulse
13 C-CO2 -labeling, we captured the net formation of mineral-associated organic carbon (MAOC) and particulate organic carbon (POC) at the end of the growing season. Pure stand perennial ryegrass (Lolium perenne) had higher quantities of rhizodeposited C allocated to MAOC and POC (0.21 and 0.13 g C kg-1 dry soil, respectively) compared to grass-legume-forb mixtures (ranging from 0.10 to 0.12 for MAOC and 0.05 to 0.06 g C kg-1 dry soil for POC). However, the proportion of MAOC (%MAOC of net C rhizodeposition) in relation to that of POC was higher in mixtures with legumes. Species richness did not affect the quantity of MAOC or POC, nor %MAOC. The quantities of MAOC and POC were positively associated with root length. In contrast, %MAOC was positively associated with root diameter and a lower root C:N ratio. Despite higher %MAOC in mixtures with legumes, the main driver of MAOC and POC quantities was the total amount of C rhizodeposition. These results highlight the importance of legumes in the formation of MAOC from rhizodeposition and of high root length for increasing both MAOC and POC quantities. Our study shows how plant community design can be used to increase MAOC and/or POC and facilitate soil C storage. By revealing the traits behind the relationships between plant communities and MAOC and POC formation, we provide a guide for species selection in intensively managed grasslands to mitigate climate change., (© 2025 The Author(s). Global Change Biology published by John Wiley & Sons Ltd.)- Published
- 2025
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203. Linguistic Tensions in a Professional Accounting Field: English Linguistic Capital, Hierarchy, Prestige, and Distinction Among Accountants†.
- Author
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Aburous, Dina and Kamla, Rania
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ENTERPRISE resource planning ,INTERNAL friction ,POWER (Social sciences) ,PROFESSIONAL standards ,PROFESSIONAL identity ,PRESTIGE ,SOCIOLINGUISTICS - Abstract
Copyright of Contemporary Accounting Research is the property of Canadian Academic Accounting Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
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204. Coupled particle-in-cell and Monte Carlo transport modeling of intense radiographic sources.
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Rose, D. V., Welch, D. R., Oliver, B. V., Clark, R. E., Johnson, D. L., Maenchen, J. E., Menge, P. R., Olson, C. L., and Rovang, D. C.
- Subjects
DIODES ,ELECTRON transport ,ELECTROMAGNETISM - Abstract
Dose-rate calculations for intense electron-beam diodes using particle-in-cell (PIC) simulations along with Monte Carlo electron/photon transport calculations are presented. The electromagnetic PIC simulations are used to model the dynamic operation of the rod-pinch and immersed-B diodes. These simulations include algorithms for tracking electron scattering and energy loss in dense materials. The positions and momenta of photons created in these materials are recorded and separate Monte Carlo calculations are used to transport the photons to determine the dose in far-field detectors. These combined calculations are used to determine radiographer equations (dose scaling as a function of diode current and voltage) that are compared directly with measured dose rates obtained on the SABRE generator at Sandia National Laboratories. [ABSTRACT FROM AUTHOR]
- Published
- 2002
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205. Metagenome-assembled genomes provide insight into the metabolic potential during early production of Hydraulic Fracturing Test Site 2 in the Delaware Basin.
- Author
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Stemple, Brooke, Gulliver, Djuna, Sarkar, Preom, Tinker, Kara, and Bibby, Kyle
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HYDRAULIC fracturing ,MICROBIAL diversity ,MICROBIAL ecology ,GENOMES ,NATURAL gas ,OIL field brines ,METAGENOMICS - Abstract
Demand for natural gas continues to climb in the United States, having reached a record monthly high of 104.9 billion cubic feet per day (Bcf/d) in November 2023. Hydraulic fracturing, a technique used to extract natural gas and oil from deep underground reservoirs, involves injecting large volumes of fluid, proppant, and chemical additives into shale units. This is followed by a “shut-in” period, during which the fracture fluid remains pressurized in the well for several weeks. The microbial processes that occur within the reservoir during this shut-in period are not well understood; yet, these reactions may significantly impact the structural integrity and overall recovery of oil and gas from the well. To shed light on this critical phase, we conducted an analysis of both pre-shut-in material alongside production fluid collected throughout the initial production phase at the Hydraulic Fracturing Test Site 2 (HFTS 2) located in the prolific Wolfcamp formation within the Permian Delaware Basin of west Texas, USA. Specifically, we aimed to assess the microbial ecology and functional potential of the microbial community during this crucial time frame. Prior analysis of 16S rRNA sequencing data through the first 35 days of production revealed a strong selection for a Clostridia species corresponding to a significant decrease in microbial diversity. Here, we performed a metagenomic analysis of produced water sampled on Day 33 of production. This analysis yielded three highquality metagenome-assembled genomes (MAGs), one of which was a Clostridia draft genome closely related to the recently classified Petromonas tenebris. This draft genome likely represents the dominant Clostridia species observed in our 16S rRNA profile. Annotation of the MAGs revealed the presence of genes involved in critical metabolic processes, including thiosulfate reduction, mixed acid fermentation, and biofilm formation. These findings suggest that this microbial community has the potential to contribute to well souring, biocorrosion, and biofouling within the reservoir. Our research provides unique insights into the early stages of production in one of the most prolific unconventional plays in the United States, with important implications for well management and energy recovery. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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206. Self-evolving persistent luminescence nanoprobes for autofluorescence-free ratiometric imaging and on-demand enhanced chemodynamic therapy of pulmonary metastatic tumors.
- Author
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Xu Zhao, Tian-Yue Gu, You-Peng Xia, Xue-Mei Gao, Li-Jian Chen, Li-Xia Yan, and Xiu-Ping Yan
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- 2024
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207. Bimanual coordination and spinal cord neuromodulation: how neural substrates of bimanual movements are altered by transcutaneous spinal cord stimulation.
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Parhizi, Behdad, Barss, Trevor S., Dineros, Alphonso Martin, Sivadasan, Gokul, Mann, Darren, and Mushahwar, Vivian K.
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SPINAL cord ,NEUROMODULATION ,SENSORIMOTOR cortex ,MOTOR cortex ,NEUROLOGICAL disorders ,SOMATOSENSORY cortex ,BEHAVIORAL assessment - Abstract
Humans use their arms in complex ways that often demand two-handed coordination. Neurological conditions limit this impressive feature of the human motor system. Understanding how neuromodulatory techniques may alter neural mechanisms of bimanual coordination is a vital step towards designing efficient rehabilitation interventions. By non-invasively activating the spinal cord, transcutaneous spinal cord stimulation (tSCS) promotes recovery of motor function after spinal cord injury. A multitude of research studies have attempted to capture the underlying neural mechanisms of these effects using a variety of electrophysiological tools, but the influence of tSCS on cortical rhythms recorded via electroencephalography remains poorly understood, especially during bimanual actions. We recruited 12 neurologically intact participants to investigate the effect of cervical tSCS on sensorimotor cortical oscillations. We examined changes in the movement kinematics during the application of tSCS as well as the cortical activation level and interhemispheric connectivity during the execution of unimanual and bimanual arm reaching movements that represent activities of daily life. Behavioral assessment of the movements showed improvement of movement time and error during a bimanual common-goal movement when tSCS was delivered, but no difference was found in the performance of unimanual and bimanual dual-goal movements with the application of tSCS. In the alpha band, spectral power was modulated with tSCS in the direction of synchronization in the primary motor cortex during unimanual and bimanual dual-goal movements and in the somatosensory cortex during unimanual movements. In the beta band, tSCS significantly increased spectral power in the primary motor and somatosensory cortices during the performance of bimanual common-goal and unimanual movements. A significant increase in interhemispheric connectivity in the primary motor cortex in the alpha band was only observed during unimanual tasks in the presence of tSCS. Our observations provide, for the first time, information regarding the supra-spinal effects of tSCS as a neuromodulatory technique applied to the spinal cord during the execution of bi- and unimanual arm movements. They also corroborate the suppressive effect of tSCS at the cortical level reported in previous studies. These findings may guide the design of improved rehabilitation interventions using tSCS for the recovery of upper-limb function in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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208. Fracture Resistant CrSi2‐Doped Silicon Nanoparticle Anodes for Fast‐Charge Lithium–Ion Batteries.
- Author
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Li, Weiqun, Luo, Chucheng, Fu, Jimin, Yang, Juan, Zhou, Xiangyang, Tang, Jingjing, and Mehdi, B. Layla
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- 2024
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209. Impact of drug-linker on method selection for analytical characterization and purification of antibody–drug conjugates.
- Author
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Santora, Ling C., Hobson, Adrian D., Wang, Lu, and Wu, Kan X.
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- 2024
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210. Vertebral chemistry distinguishes regional populations of Blacktip Sharks in the northern Gulf of Mexico.
- Author
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Hayne, Abigail H. P., Richards, Travis M., Drymon, J. Marcus, Falterman, Brett, Miller, Nathan R., Wells, R. J. David, and Mohan, John A.
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SHARKS ,NONFERROUS metal industries ,FISHERIES ,TERRITORIAL waters ,FISHERY management ,MIGRATORY animals ,ZINC industry - Abstract
Objective: Understanding the spatial connectivity of elasmobranch populations is critical for regional fisheries management. The Blacktip Shark Carcharhinus limbatus is abundant in coastal waters of the Gulf of Mexico (GoM) and important in recreational and commercial fisheries. Based on genetic and tagging studies, GoM Blacktip Sharks are currently managed under separate quotas between the eastern and western GoM (divided at 88°W), but no studies have used vertebral chemistry to assess the population structure of adult Blacktip Sharks. Methods: We compared vertebral elemental signatures (barium [Ba], magnesium [Mg], manganese [Mn], strontium [Sr], and zinc [Zn]) for the first year of life with last occupied habitats (vertebral edges) in Blacktip Sharks collected from the western (Texas and Louisiana) and eastern (Alabama and Florida) coastal waters of the northern GoM. Result: We found significant regional differences in Ba, Mg, Mn, and Sr vertebral edge signatures, suggesting ecological separation of Blacktip Sharks. Significant correlation between first‐year and edge signatures suggested a high degree of residency between life stages. Cross‐validated discriminant function analyses yielded highest regional classification accuracies when Florida sharks were grouped separately west of 88°W (90%), demonstrating the unique elemental signatures of eastern versus western GoM Blacktip Sharks under current management delineations. Conclusion: Combined, these findings demonstrate that trace element markers can distinguish regional populations of Blacktip Sharks and provide a complimentary approach in addition to genetics and physical tagging to support current stock management efforts. Impact statementStocks of Blacktip Sharks are managed under separate quotas in the eastern and western Gulf of Mexico. In this study, elemental signatures in mineralized vertebral cartilage of Blacktip Sharks confirm ecological population separation. Natural chemical tags in shark vertebrae offer an additional tool to characterize population connectivity and stock delineation for highly migratory shark species. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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211. School counselors as agents of peace in the school: a systematic literature review.
- Author
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Eka Saputra, Wahyu Nanda, Rohmadheny, Prima Suci, and Suryanto, Farid
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STUDENT counselors ,SCHOOL children ,CHILD development ,PEACEBUILDING ,SCHOOL violence - Abstract
Adolescence is a critical phase that can raise a problem, one of which is violence. This condition harms the dynamics of academic activities at school if they do not immediately find a solution. One party that has a central role in character development to suppress student violence is school counselors. This research is a systematic literature review that describes the counselor’s role as an agent of peace whose primary focus is to build a culture of peace in the school environment. The results showed that counselors used two pillars of service to create a culture of peace in schools, namely peace guidance and peace counseling. This paper discusses operational descriptions for each of the posts to build a culture of peace in the school environment. This results should serve as a reference for school counselors in supporting their programs to reduce violence in schools. Besides, this study also recommends conducting further research to create a guidance and counseling program to reduce violence among adolescents in schools. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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212. The art of living together: space mining ecosystem, sustainability and accountability.
- Author
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Lee, Yeolan and Fong, Eric A.
- Subjects
ARTS funding ,SUSTAINABILITY ,ECOSYSTEMS ,OUTER space ,PUBLIC spaces ,VALUE (Economics) - Abstract
Purpose: A major obstacle regarding the measurement of an organization's sustainability and accountability in the space economy is defining the context and boundaries of commercial activity in outer space. Here, we introduce an ecosystem framework to address this obstacle. We utilize this framework to analyze the space mining sector. Our ecosystem framework sets the space mining sector's boundaries and helps a firm identify key stakeholders, activities, policies, norms and common pool resources in that sector and the interactions between them; a significant step in structuring how to measure space sustainability and accountability. Design/methodology/approach: Borrowing theories and perspectives from a wide range of academic fields, this paper conducts a comprehensive context analysis of the space mining ecosystem. Findings: Using our ecosystem framework to define the context and set boundaries for the space mining sector allowed us to identify sustainability-related issues in the sector and offer roadmaps to develop sustainability measures and standards. Originality/value: To the best of the authors' knowledge, this is one of the first papers to introduce a framework to define boundaries in the global space economy and provides a tool to understand, measure and evaluate the space mining sector's environmental, social and economic issues. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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213. Mitigating Toxic Metal Exposure Through Leafy Greens: A Comprehensive Review Contrasting Cadmium and Lead in Spinach.
- Author
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Seyfferth, Angelia L., Limmer, Matt A., Runkle, Benjamin R. K., and Chaney, Rufus L.
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HEAVY metals ,LEAD ,ARSENIC ,EDIBLE greens ,SPINACH ,CADMIUM ,EVIDENCE gaps ,SEMIMETALS - Abstract
Metals and metalloids (hereafter, metal(loid)s) in plant‐based foods are a source of exposure to humans, but not all metal(loid)‐food interactions are the same. Differences exist between metal(loid)s in terms of their behavior in soils and in how they are taken up by plants and stored in the edible plant tissue/food. Thus, there cannot be one consistent solution to reducing toxic metal(loid)s exposure to humans from foods. In addition, how metal(loid)s are absorbed, distributed, metabolized, and excreted by the human body differs based on both the metal(loid), other elements and nutrients in the food, and the nutritional status of the human. Initiatives like the United States Food and Drug Administration's Closer to Zero initiative to reduce the exposure of young children to the toxic elements cadmium, lead, arsenic, and mercury from foods warrant careful consideration of each metal(loid) and plant interaction. This review explores such plant‐metal(loid) interactions using the example of spinach and the metals cadmium and lead. This review highlights differences in the magnitude of exposure, bioavailability, and the practicality of mitigation strategies while outlining research gaps and future needs. A focus on feasibility and producer needs, informed via stakeholder interviews, emphasizes the need for better analytical testing facilities and grower and consumer education. More research should focus on minimization of chloride inputs for leafy greens to lessen plant‐availability of Cd and the role of oxalate in reducing Cd bioavailability from spinach. These findings are applicable to other leafy greens (e.g., kale, lettuce), but not for other plants or metal(loid)s. Plain Language Summary: Toxic metals like cadmium and lead in foods can be harmful to our health, especially for babies and young children who are more vulnerable due to their smaller size and rapid development. Leafy greens like spinach can absorb these metals from the soil but in different ways. In addition, how and where they accumulate in edible plant tissues also differs. This review uses spinach as an example to compare and contrast how cadmium and lead differ in how they move through soil and accumulate in plant foods. It also discusses practical pre‐ and post‐harvest techniques to lessen human exposure to these metals that can be adopted by producers and consumers. Finally, it highlights future needs and research directions. Key Points: The toxic elements targeted in the Food and Drug Administration Closer to Zero action plan behave differently in soils and in plant uptakeMitigation strategies to reduce exposure to toxic elements must consider the drivers of soil mobility and accumulation into edible tissuesHealth and nutrition factors that affect metal and metalloid bioavailability upon ingestion should also be considered [ABSTRACT FROM AUTHOR]
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- 2024
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214. Spectral Energy Distribution of Late Stage Stars.
- Author
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Tatarnikov, A. M., Zheltoukhov, S. G., and Malik, E. D.
- Abstract
This paper presents a catalog of the energy distribution in the spectra of 263 stars in the wavelength range from 0.4 to 100 m, which are at late stages of evolution and have been observed by the ISO space observatory. For each object in the catalog, estimates of the observed bolometric fluxes were derived from smoothed energy distribution curves. The catalog is available at https://infra.sai.msu.ru/sai%5flss%5fsed both as a table and in machine-readable format. It is shown that for the specified sample of objects, their ISO SWS spectra in the range 2.4–45 m correspond to the general shape of the continuum in only 60 of cases, and can be used without recalibration. A selection of carbon stars, accessible for the infrared observations from the MSU observatories has been made. For some of them the first brightness estimates in the , and bands were obtained with the new IR camera of the 2.5-m telescope of CMO. [ABSTRACT FROM AUTHOR]
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- 2024
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215. Using explainable machine learning methods to evaluate vulnerability and restoration potential of ecosystem state transitions.
- Author
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Delaney, John T. and Larson, Danelle M.
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RESTORATION ecology ,MACHINE learning ,STREAM restoration ,WATER depth ,WATER use ,LAND use - Abstract
Copyright of Conservation Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
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216. Selection of planning unit size in dynamic management strategies to reduce human–wildlife conflict.
- Author
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Welch, Heather, Liu, Owen R., Riekkola, Leena, Abrahms, Briana, Hazen, Elliott L., and Samhouri, Jameal F.
- Subjects
MARINE heatwaves ,WHALES ,HUMPBACK whale ,BLUE whale - Abstract
Copyright of Conservation Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
- Full Text
- View/download PDF
217. Personal and Contextual Predictors of Information Security Policy Compliance: Evidence from a Low-Fidelity Simulation.
- Author
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Brooks, Ricardo R., Williams, Kevin J., and Lee, So-Yun
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INFORMATION technology security ,INFORMATION policy ,PLANNED behavior theory ,SECURITY systems ,COMPLIANT behavior - Abstract
The objective of this study was to examine the roles that organizational security climate and perceived costs and rewards of compliance play in predicting the extent to which people endorse compliance or violation of specific information security policies (ISP). A low-fidelity simulation placed participants in either a strong or weak information security climate and presented them with four cybersecurity scenarios that assessed their judgments of complying with or violating security policies in those situations. Results indicated that information security climate relates to intent to comply with a company's security policies via attitudes, subjective norms, and perceived behavioral control, in line with the predictions of the theory of planned behavior (Ajzen, 1991). Strong intentions to comply with policies, in turn, were associated with greater endorsement of compliant behaviors and decreased endorsement of policy violations in the specific scenarios. However, whether or not individuals chose to endorse compliance with or violation of specific policies, after initial intentions were formed, was also influenced by their perceived costs and rewards of compliance. The effects of costs were particularly strong: as perceived costs increased, participants were more likely to endorse ISP violations. Our findings suggest that establishing a strong information security climate may reduce the chances of security breaches, but that organizations should also intervene to reduce the perceived burden and inconvenience of security tasks. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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218. Exploring the gut microbiota-hippocampus-metabolites axis dysregulation in sepsis mice.
- Author
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Fangqiang Song, Qinglun Li, Jiyao Cui, Jianhua Wang, Shuai Xiao, Bo Yu, Yanqi Sun, Wenke Song, Linlin Wu, and Yongqin Zhou
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SEPSIS ,LIQUID chromatography-mass spectrometry ,AMINO acid synthesis - Abstract
Background: Sepsis is commonly associated with a sudden impairment of brain function, thus leading to significant rates of illness and mortality. The objective of this research was to integrate microbiome and metabolome to reveal the mechanism of microbiota-hippocampus-metabolites axis dysfunction in a mouse model of sepsis. Methods: A mouse model of sepsis was established via cecal ligation and puncture. The potential associations between the composition of the gut microbiota and metabolites in the hippocampus of mice with sepsis were investigated by combining 16S ribosomal RNA gene sequencing and ultra-highperformance liquid chromatography tandem mass spectrometry. Results: A total of 140 differential metabolites were identified in the hippocampal tissues of mice with sepsis when compared to those of control mice. These differential metabolites in mice with sepsis were not only associated with autophagy and serotonergic synapse, but also involved in the metabolism and synthesis of numerous amino acids. At the phylum level, the abundance of Bacteroidota was increased, while that of Firmicutes (Bacillota) was decreased in mice with sepsis. At the genus level, the abundance of Alistipes was increased, while that of Lachnospiraceae_NK4A136_group was decreased in mice with sepsis. The Firmicutes (Bacillota)/Bacteroidota (F/B) ratio was decreased in mice with sepsis when compared to that of control mice. Furthermore, the F/B ratio was positively correlated with 5'-methylthioadenosine, PC (18:3(9Z,12Z,15Z)/18:0) and curdione, and negatively correlated with indoxylsulfuric acid, corticosterone, kynurenine and ornithine. Conclusion: Analysis revealed a reduction in the F/B ratio in mice with sepsis, thus contributing to the disturbance of 5'-methylthioadenosine, curdione, PC (18:3(9Z,12Z,15Z)/18:0), corticosterone, ornithine, indoxylsulfuric acid and kynurenine; eventually, these changes led to hippocampus dysfunction. Our findings provide a new direction for the management of sepsis-induced hippocampus dysfunction. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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219. Nanostructured CeO2 photocatalysts: optimizing surface chemistry, morphology, and visible-light absorption.
- Author
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Herzog, Austin E., Michael, Tara J., Dunkelberger, Adam D., Johannes, Michelle D., Rolison, Debra R., DeSario, Paul A., and Novak, Travis G.
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- 2024
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220. Investigating the role of network former interactions on charge carrier diffusivity in glasses.
- Author
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Salrin, Tyler C., Bragatto, Caio B., and Wilkinson, Collin J.
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CHARGE carriers ,MACHINE learning ,REAL estate business ,DATABASES ,CHEMICAL bond lengths ,POLYMER networks ,CHARGE carrier mobility - Abstract
Ionic transport is a critical property for the glass industry, since emerging applications such as sensors, batteries, and electric melting are based on the phenomenon. Short-range interactions (anion-charge carrier) have not been able to explain the total activation barrier observed experimentally, and, as such, it is critical to understand the larger role of all ions in a glass, not just the carrier and the 'site' ions. This research focuses on the role of network formers and their impact on diffusion in glasses, something that current models lack an explicit explanation of. Atomistic simulations with randomly generated parameters for the cation potentials and classical simulations were used to determine the diffusion coefficients and activation energies for synthetic network formers. Using this database, explainable machine learning algorithms were employed to explore network former interactions and determine which parameters are the most influential for ion diffusion. Results suggest that the bond length of the cations changes the geometry of the structure contributing the greatest to cation-modifier interactions. [ABSTRACT FROM AUTHOR]
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- 2024
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221. Pseudomonas aeruginosa Isolates from Water Samples of the Gulf of Mexico Show Similar Virulence Properties but Different Antibiotic Susceptibility Profiles than Clinical Isolates.
- Author
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Romero-González, Luis E., Montelongo-Martínez, Luis F., González-Valdez, Abigail, Quiroz-Morales, Sara E., Cocotl-Yañez, Miguel, Franco-Cendejas, Rafael, Soberón-Chávez, Gloria, Pardo-López, Liliana, and Bustamante, Víctor H.
- Subjects
ANTIBIOTIC residues ,WATER sampling ,PSEUDOMONAS aeruginosa ,ANTHROPOGENIC effects on nature ,GREATER wax moth ,DRUG resistance in bacteria ,ANTIBIOTICS - Abstract
Pseudomonas aeruginosa is an opportunistic pathogen found in a wide variety of environments, including soil, water, and habitats associated with animals, humans, and plants. From a One Health perspective, which recognizes the interconnectedness of human, animal, and environmental health, it is important to study the virulence characteristics and antibiotic susceptibility of environmental bacteria. In this study, we compared the virulence properties and the antibiotic resistance profiles of seven isolates collected from the Gulf of Mexico with those of seven clinical strains of P. aeruginosa. Our results indicate that the marine and clinical isolates tested exhibit similar virulence properties; they expressed different virulence factors and were able to kill Galleria mellonella larvae, an animal model commonly used to analyze the pathogenicity of many bacteria, including P. aeruginosa. In contrast, the clinical strains showed higher antibiotic resistance than the marine isolates. Consistently, the clinical strains exhibited a higher prevalence of class 1 integron, an indicator of anthropogenic impact, compared with the marine isolates. Thus, our results indicate that the P. aeruginosa marine strains analyzed in this study, isolated from the Gulf of Mexico, have similar virulence properties, but lower antibiotic resistance, than those from hospitals. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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222. Evaluation of CD4 Count in HIV Infected Pregnant Women at Kibagabaga Level Two Teaching Hospital.
- Author
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Ntezirizaza, Evariste, Prudence, Ishimwe Alain, Habanabakize, Baptiste Jean, and Jean De Dieu, Tuyishime
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CD4 lymphocyte count ,PREGNANT women ,HIV infection transmission ,TEACHING hospitals ,VERTICAL transmission (Communicable diseases) ,IMMUNE reconstitution inflammatory syndrome - Abstract
CD4 count measures the degree of immunosuppression in HIV-positive patients and is used to monitor HIV infection progression in human body. HIV is a virus that attacks the body’s immune system and if not treated, can lead to AIDS The rate of CD4 cells destruction is directly proportional to progressive replication of HIV. Pregnant women infected with HIV have high risk of mother to child transmission of HIV infection and are prone to excessive immunosuppression and increased viral load if their CD4 cell count is not properly maintained. Pregnancy may influence CD4 cells count reduction or don’t, that’s why this study focused on evaluation of CD4 count in HIV infected pregnant women. The objectives of this study were to determine the association between pregnancy trimesters and CD4 count among HIV infected pregnant women at KDH. The study was a cross sectional study which included 46 patients who visited kibagabaga level two teaching hospital in 5 months. Data were obtained by collecting venous blood of patients, testing their CD4 count and use of a questionnaire to evaluate the risk factors associated with changes in CD4 count. Data collected were analysed using statistical package for social sciences (SPSS) software version 22.0 and Microsoft word, the presentation of results was done using tables. Variables with p-value less than or equal to 0.05 were considered statistically significant. The study showed that there is an association between pregnancy trimesters and CD4 count among HIV infected pregnant women where 21(45.6%) women were in third trimester and had the highest CD4 count compared to women in the 2
nd trimester 14(30.4%) followed by women in 1st trimester 11(24%) with p-value of 0.04 which is statistically significant. In evaluated CD4 count changes, associated risk factors were, antiretroviral treatment intake, diet intake, education level, pregnancy trimester, and closely spaced pregnancies. Which were found to have pvalues 0.00, 0.00, 0.04, 0.04 and 0.01 that were statistically significant respectively. [ABSTRACT FROM AUTHOR]- Published
- 2024
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223. Effect of presidential elections on investor herding behaviour in African stock markets.
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Musah, Godwin, Domeher, Daniel, and Alagidede, Imhotep
- Abstract
Purpose: The purpose of this paper is to investigate investor herding behaviour and the effect of presidential elections on investor herding behaviour in African stock markets at the sector level. Design/methodology/approach: The study segregates listed firms into financial, consumer goods, consumer services and basic materials sectors and uses the cross-sectional absolute deviation approach as a metric of detecting herding in each of the sectors. The authors extend the model to tease out the effect of presidential elections on investor herding behaviour. Findings: The study reveals that sectoral differences are fundamental to the evolution of herding. Herding is prominent in a financial services sector dominated by banks. The phenomenon also prevails in markets with smaller consumer goods and services sectors. A post-presidential election effect on investor herding is found for the consumer goods and services sectors of Ghana and a pre-presidential election effect is documented in Nigeria's consumer services sector. The authors conclude that post-presidential election effect is as a result of political connections whilst a pre-presidential election effect is attributable to political business cycles. Research limitations/implications: The study is based on four African countries due to data constraints. Nonetheless, the study is the first in Africa to the best of the authors' knowledge, and the results are very solid and have a lot of practical and policy implications. Practical implications: The study has implications for investors as it guides investment behaviour in pre- and post-presidential election periods. Originality/value: Past studies on investor herding behaviour in African stock markets have largely concentrated on the aggregate market. Knowledge on sectoral differences in investor herding is almost non-existent for African stock markets. Furthermore, premised on the fact that stock markets react to presidential elections, there is no known study that have attempted to examine the effect of presidential elections on investor herding behaviour. This paper contributes to the literature by providing evidence on sectoral differences in investor herding behaviour and the effect of presidential elections on sectoral herding behaviour. [ABSTRACT FROM AUTHOR]
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- 2024
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224. Detecting deception in computer-mediated communication: the role of popularity information across media types.
- Author
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Mirsadikov, Akmal, Vedadi, Ali, and Marett, Kent
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- 2024
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225. A Resilient Marine Protected Area Network Design: A First for the Arafura Timor Seas.
- Author
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Fajariyanto, Yusuf, Green, Alison, Hakim, Lukman, Prananda, Aldo Restu Agi, Susanto, Handoko Adi, Tania, Casandra, Welly, Marthen, and Djohani, Rili
- Subjects
MARINE parks & reserves ,GEOGRAPHIC information systems ,MARINE ecology ,RESILIENT design ,INFORMATION processing - Abstract
The Arafura and Timor Seas (ATS) comprise both near pristine and highly threatened marine ecosystems. There are four littoral nations (Indonesia, Timor-Leste, Australia, and Papua New Guinea), which have independently established Marine Protected Areas (MPAs). We design the first resilient MPA network for the entire region to protect critical habitats and species by considering transboundary features (i.e., connectivity of fisheries, rare, threatened, and protected species), uses and threats (i.e., fishing and climate change). We used Geographic Information System processing to identify gaps in the regional network based on existing and proposed MPAs and Areas of Interest (AOIs: previously identified as potential new MPAs) in each country, followed by systematic conservation planning to identify new AOIs for establishing MPAs to fill these gaps. The ATS MPA Network design (301,055 km
2 ) has been endorsed by all four countries and includes all 93 existing (265,405 km2 ) and proposed (6,264 km2 ) MPAs, 13 previously identified AOIs (14,773 km2 ), and seven new AOIs identified in this study (14,613 km2 ). Of the new AOIs, three have been incorporated in Indonesia's national MPA network plan, one is in a new MPA currently being developed in Timor-Leste, and Australia is considering two as potential areas for new MPAs. [ABSTRACT FROM AUTHOR]- Published
- 2024
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226. ATSEA: A Regional Collaboration to Address Transboundary Threats to Ecosystems for Human Well-Being in the Arafura and Timor Seas.
- Author
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Susanto, Handoko Adi, Tania, Casandra, Narcise, Cristine Ingrid, Aguiling, Kathrine Rose, Triani, Deti, Gautama, Dwi Ariyoga, Yhuanje, Kenneth, and Belo, Expedito Maria
- Subjects
MARINE biodiversity ,MARINE pollution ,MARINE resource management ,UNITED Nations Convention on the Law of the Sea (1982) ,NATURAL gas reserves ,MARINE resources ,ENVIRONMENTAL protection ,WELL-being - Abstract
The Arafura and Timor Seas (ATS) are home to a wealth of both living and non-living marine resources, including major fisheries, significant oil and gas reserves, extensive coastal and marine habitats, and globally-significant populations of migratory, rare, threatened, and endangered marine species. These resources provide goods and services valued at more than US$7.3B to neighboring nations, annually. The waters of the ATS are bounded by Indonesia, Timor-Leste, Papua New Guinea and Australia; and significantly, are defined as a 'semi-enclosed seas' under the 1982 United Nations Convention on the Law of the Sea (UNCLOS). UNCLOS places a responsibility and an obligation on countries bordering enclosed and semi-enclosed seas to cooperate in resource management, the protection of the marine environment and marine scientific research. Recent assessments indicate that the marine environment in the ATS region is in serious decline, primarily as a result of over-harvesting and other direct and indirect impacts of anthropogenic stresses and global climate change. Transboundary issues such as unsustainable and illegal fishing activities, marine and land-based pollution, marine habitat and biodiversity decline, and climate change negatively impact fishery resources, ecosystem quality, and human well-being. Over the past 2 decades ATS littoral countries have progressed toward transboundary management of the region. This paper elaborates on the current status and threats to coastal and marine resources in the ATS region and in particular, the major efforts of the four littoral ATS countries to address transboundary environmental issues at the regional, national, and project site levels through the US$9.7M, 5-year, UN GEF-funded ATSEA-2 program. A key result of the ATSEA Program is regional collaboration that supports stakeholder engagement for meaningful resource management and protection is essential for the sustainable use and development of marine resources in the ATS. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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227. Mastering digital leadership capabilities for business model innovation: the role of managerial decision-making and grants.
- Author
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Faiz, Misbah, Sarwar, Naukhez, Tariq, Adeel, and Memon, Mumtaz Ali
- Abstract
Purpose: Research has shown that business model innovation can facilitate most ventures to innovate and remain competitive, yet there has been limited work on how digital leadership capabilities influence business model innovation. Building on the dynamic capabilities view, we address this gap by linking digital leadership capabilities with business model innovation via managerial decision-making through provision of grants received by new ventures. Design/methodology/approach: The study is cross-sectional research. Data have been collected utilizing purposive sampling from 313 founding members of new ventures in high-velocity markets, i.e. from Pakistan. SPSS has been used to conduct the moderated mediation analysis. Findings: Digital leadership capabilities foster the business model innovation of the new ventures because they enable new ventures to capitalize on digital technologies and create new ways of generating value for the customers and themselves. Moreover, managerial decision-making mediates digital leadership capabilities and business model innovation relationship, whereas, grants moderate the indirect positive effect of digital leadership capabilities on business model innovation via managerial decision-making. The study generates initial evidence on the impact of digital leadership capabilities on business model innovation via managerial decision-making for new ventures. We advance knowledge on new ventures' business model innovation by deep-diving into dynamic capabilities view and emphasizing digital leadership capabilities as a significant driver for business model innovation. Originality/value: With the help of dynamic capabilities theory, this study analyzes how new ventures make use of digital leadership capabilities to promote business model innovation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
228. A systematic review on the role of therapist characteristics in the treatment of eating disorders.
- Author
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Albano, Gaia, Teti, Arianna, Scrò, Arianna, Bonfanti, Rubinia Celeste, Fortunato, Lucia, and Coco, Gianluca Lo
- Subjects
EATING disorders ,PATIENT-professional relations ,PSYCHOTHERAPY ,EMPATHY ,TREATMENT effectiveness - Abstract
Treating patients with eating disorders can be challenging for therapists, as it requires the establishment of a strong therapeutic relationship. According to the literature, therapist characteristics may influence intervention outcomes. The aim of this systematic review was to identify and synthesize existing literature on therapist interpersonal characteristics that could affect psychotherapy relationship or outcomes in the context of eating disorder treatment from both patients' and therapists' perspectives. We conducted a systematic search using electronic databases and included both qualitative and quantitative studies from 1980 until July 2023. Out of the 1230 studies screened, 38 papers met the inclusion criteria and were included in the systematic review. The results indicate that patients reported therapist's warmth, empathic understanding, a supportive attitude, expertise in eating disorders, and self-disclosure as positive characteristics. Conversely, a lack of empathy, a judgmental attitude, and insufficient expertise were reported as therapist negative characteristics which could have a detrimental impact on treatment outcome. Few studies have reported therapist's perceptions of their own personal characteristics which could have an impact on treatment. Therapists reported that empathy and supportiveness, optimism, and previous eating disorder experience were positive characteristics. Conversely, clinician anxiety, a judgmental attitude, and a lack of objectivity were reported as negative characteristics that therapists felt could hinder treatment. This systematic review offers initial evidence on the personal characteristics of therapists that may affect the treatment process and outcomes when working with patients with eating disorders. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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229. Multisectoral analysis of drought impacts and management responses to the 2008–2015 record drought in the Colorado Basin, Texas.
- Author
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Ferencz, Stephen B., Sun, Ning, Turner, Sean W. D., Smith, Brian A., and Rice, Jennie S.
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DROUGHT management ,DROUGHTS ,TECHNOLOGICAL innovations ,WATER security ,URBAN agriculture ,CITY dwellers ,ENVIRONMENTAL infrastructure - Abstract
Drought has long posed an existential threat to society. Engineering and technological advancements have enabled the development of complex, interconnected water supply systems that buffer societies from the impacts of drought, enabling growth and prosperity. However, increasing water demand from population growth and economic development, combined with more extreme and prolonged droughts due to climate change, poses significant challenges for governments in the 21st century. Improved understanding of the cascading multisectoral impacts and adaptive responses resulting from extreme drought can aid in adaptive planning and highlight key processes in modeling drought impacts. The record drought spanning 2008 to 2015 in the Colorado Basin in the state of Texas, United States, serves as an outstanding illustration to assess multisectoral impacts and responses to severe, multi-year drought. The basin faces similar water security challenges to those across the western US, such as groundwater depletion and sustainability, resource competition between agriculture and growing urban populations, limited options for additional reservoir expansion, and the heightened risk of more severe and frequent droughts due to climate change. By analyzing rich, high-quality data sourced from nine different local, state, and federal sources, we demonstrate that characterizing regional multisector dynamics is crucial to predicting and understanding future vulnerability and possible approaches to reduce impacts to human and natural systems in the face of extreme drought conditions. This review reveals that, despite the severe hydrometeorological conditions of the drought, the region's advanced economy and existing water infrastructure effectively mitigated economic and societal impacts. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
230. Mormonism through the Lens of Translation Studies.
- Author
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GONZÁLEZ NÚÑEZ, GABRIEL
- Subjects
RELIGIOUS movements ,CHRISTIAN sects ,SPACE exploration ,CHRISTIANITY ,MORMONS ,MORMONISM - Abstract
Copyright of HIKMA: Revista de Traducción is the property of UCOPRESS Editorial Universidad de Cordoba and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
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- View/download PDF
231. Driving financial results is not the only priority! An exploration of the future role of chief financial officer: a grounded theory approach.
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Chatpibal, Manoj, Chaiyasoonthorn, Wornchanok, and Chaveesuk, Singha
- Published
- 2024
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232. ACUTE EFFECTS OF TRANSCRANIAL DIRECT CURRENT STIMULATION (tDCS) COMBINED WITH AEROBIC EXERCISE IN TREATING FOOD COMPULSION: A RANDOMIZED CONTROLLED TRIAL.
- Author
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Artifon, Milena, Tossi, Gabriel Mayer, Griebler, Nathália, Schestatsky, Pedro, Leal, Rodrigo, Munhoz, Samuel, Beraldo, Lucas, Adachi, Lauren Naomi, and Pietta-Dias, Caroline
- Subjects
TRANSCRANIAL direct current stimulation ,AEROBIC exercises ,RANDOMIZED controlled trials ,BINGE-eating disorder ,FOOD consumption ,LEAN body mass ,PREFRONTAL cortex - Abstract
Copyright of Revista Brasileira de Obesidade, Nutrição e Emagrecimento is the property of Instituto Brasileiro de Pesquisa e Ensino em Fisiologia do Exercicio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2024
233. Digital transformation: a challenging opportunity for the food industry companies.
- Author
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Marczewska, Magdalena
- Abstract
Purpose: Common availability of digital technologies encouraged companies in almost all industries to focus on exploring various ways of benefiting from their adoption and thus taking steps toward their digital transformation. This paper aims to describe the digital transformation of small and medium enterprises (SMEs) as a challenging opportunity and identify ways in which companies from the food industry address it. Design/methodology/approach: The paper presents empirical evidence based on a case study of the Polish freeze-drying market and companies operating on it. This study adopted a single case study research method to describe the digital transformation journey of SMEs. The sample constitutes a single sectoral case study with more than one unit of analysis – sixteen companies. The undertaken approach follows an embedded case study design and allows for an extensive and multidimensional analysis of rich empirical data. Findings: The results of this analysis allowed to identify four significant trends describing human resources involvement in the digital transformation of freeze-drying companies in Poland (i.e. visionary top-down, cooperative task-oriented, persuasive bottom-up, chaotic), a detailed catalog of outcomes of digital transformation from the perspective of food industry companies grouped in seven categories and a list of main barriers to digital transformation. Originality/value: This paper contributes to expanding knowledge on the practices of food industry companies in addressing challenges posed by the development of information technology and the dynamically changing environment after the COVID-19 pandemic. It contributes further to the discussion related to context-, industry- and country-specific barriers to digital transformation, identifying time-related constraints as an essential barrier to digital transformation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
234. Incentivisation of digital technology takers in the construction industry.
- Author
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Ebekozien, Andrew and Samsurijan, Mohamad Shaharudin
- Subjects
DIGITAL technology ,CONSTRUCTION industry ,TELECOMMUNICATION ,DEVELOPING countries - Abstract
Purpose: Studies showed that digital technology applications in the construction industry are low, especially in many developing nations. Construction incentivisation (CI) is one of the long-standing principles adopted to enhance project performance. There is a paucity of studies concerning CI to improve digital technology applications. Thus, this research investigated the relevance and perceived hindrances that may hinder the implementation of CI from promoting digital technologies and proffer ways to improve digital technology applications in the construction sector. Design/methodology/approach: In Nigeria's context, this research is exploratory. Twenty-four semi-structured virtual interviews were conducted in Lagos and Abuja, Nigeria, with knowledgeable participants that indicated interest and were interviewed. The engaged interviewees were drawn from government agencies, academicians in construction consultancy, Internet and communication technology experts, construction contracting firms and construction consulting firms. The collected data were coded and analysed through a thematic method. Findings: Digitalisation of the industry via CI may face some hindrances. The perceived issues that may hinder CI implementation were classified into most severe, severe and fairly severe in Nigeria's construction industry context. Findings proffer feasible policy solutions that can mitigate these issues and improve digital technology applications in the industry via the CI. Research limitations/implications: This study covered the relevance and perceived issues that may hinder the implementation of the CI to improve digital technology applications in the industry. Also, the study proffers policy solutions to enhance digital technology applications in the industry via the CI concept. Practical implications: Findings from this research will support and offer a valuable understanding of the relevance of the "incentivisation concept" to improve digital technology applications in the Nigerian-built environment. Other developing countries with low applications of digital technology in construction may consider the suggested policy solutions from this research. Also, this study will stir policymakers and construction practitioners to support policies tailored towards improving digital technology applications in construction. Originality/value: This research contributes by exploring the effectiveness of the CI concept and informing construction practitioners and policymakers on how to improve digital technology applications in the Nigerian construction industry. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
235. Scaling photonic integrated circuits with InP technology: A perspective.
- Author
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Wang, Yi, Jiao, Yuqing, and Williams, Kevin
- Subjects
INTEGRATED circuits ,PASSIVE components ,INDIUM phosphide - Abstract
The number of photonic components integrated into the same circuit is approaching one million, but so far, this has been without the large-scale integration of active components: lasers, amplifiers, and high-speed modulators. Emerging applications in communication, sensing, and computing sectors will benefit from the functionality gained with high-density active–passive integration. Indium phosphide offers the richest possible combinations of active components, but in the past decade, their pace of integration scaling has not kept up with passive components realized in silicon. In this work, we offer a perspective for functional scaling of photonic integrated circuits with actives and passives on InP platforms, in the axes of component miniaturization, areal optimization, and wafer size scaling. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
236. TOWARDS A MODEL ON JUNK BOND CONTAGION.
- Author
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BELLANDI, FRANCESCO, BELLANDI, LUDOVICO, BOCCALETTI, SIMONE, and CHIACCHIERINI, CLAUDIO
- Published
- 2024
237. A machine learning approach for protected species bycatch estimation.
- Author
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Long, Christopher A., Ahrens, Robert N. M., Jones, T. Todd, and Siders, Zachary A.
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BYCATCHES ,NUMBERS of species ,ENDANGERED species ,FALSE positive error ,FISHERIES ,RANDOM forest algorithms ,MACHINE learning - Abstract
Introduction: Monitoring bycatch of protected species is a fisheries management priority. In practice, protected species bycatch is difficult to precisely or accurately estimate with commonly used ratio estimators or parametric, linear model-based methods. Machine-learning algorithms have been proposed as means of overcoming some of the analytical hurdles in estimating protected species bycatch. Methods: Using 17 years of set-specific bycatch data derived from 100% observer coverage of the Hawaii shallow-set longline fishery and 25 aligned environmental predictors, we evaluated a new approach for protected species bycatch estimation using Ensemble Random Forests (ERFs). We tested the ability of ERFs to predict interactions with five protected species with varying levels of bycatch in the fishery and methods for correcting these predictions using Type I and Type II error rates from the training data. We also assessed the amount of training data needed to inform a ERF approach by mimicking the sequential addition of new data in each subsequent fishing year. Results: We showed that ERF bycatch estimation was most effective for species with greater than 2% interaction rates and error correction improved bycatch estimates for all species but introduced a tendency to regress estimates towards mean rates in the training data. Training data needs differed among species but those above 2% interaction rates required 7-12 years of bycatch data. Discussion: Our machine learning approach can improve bycatch estimates for rare species but comparisons are needed to other approaches to assess which methods perform best for hyperrare species. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
238. Multifactorial effects on bounded rational decision-making.
- Author
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Han, Dun and Li, Xiang
- Abstract
Conventional models of decision-making are predicated upon the notion of rational deliberation. However, empirical evidence has increasingly highlighted the pervasive role of bounded rationality in shaping decisional outcomes. The manifestation of bounded rationality is evident through a spectrum of cognitive biases and heuristics, including but not limited to anchoring, availability, the decoy effect, herd behavior, and the nuanced dynamics of reward and punishment, as well as the implications of weighting and framing effects. This prospective study is dedicated to a comprehensive exploration of such multiple factors together with their impacts to the architecture and functionality of decision-making processes, and their further research potentials as well. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
239. Mitochondrial Localized In Situ Self‐Assembly Reprogramming Tumor Immune and Metabolic Microenvironment for Enhanced Cancer Therapy.
- Author
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Wang, Zhilong, Wang, Qian, Cao, Hongmei, Wang, Zhongyan, Wang, Dianyu, Liu, Jinjian, Gao, Tongxin, Ren, Chunhua, and Liu, Jianfeng
- Published
- 2024
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240. Cryptosporidium infections in Sri Lanka: A Systematic Review.
- Author
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Fareed, F., Thilakarathna, P. T. A., Karunaratne, S. H. P. P., and Noordeen, F.
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CRYPTOSPORIDIOSIS ,EPIDEMIOLOGY ,FECES ,FOOD contamination ,AGRICULTURE ,WATER buffalo - Abstract
Cryptosporidium is a protozoan parasite that causes gastroenteritis in both humans and animals. Cryptosporidium infections in humans and animals have been reported from many parts of Sri Lanka. During the present study, five international electronic databases were extensively searched for peer-reviewed research papers published on the prevalence of Cryptosporidium infections and their occurrence in probable sources in Sri Lanka, within the time frame from 1987 to 2023. Collected information revealed that Cryptosporidium oocysts are more commonly found in surface water compared to well water, and shallow wells have a higher occurrence than deep wells. Contamination of river water with Cryptosporidium is mainly from the faecal matter coming from various domestic, agricultural and wildlife animal species. In Sri Lanka, Cryptosporidium infections in captive non-human primates is possibly due to contaminated food and human interaction. In wild animals, infections are more common in species that feed on the ground, suggesting contaminated soil and water as the source of infection. Most of the infected animals are asymptomatic, and many had co-infections with other enteric parasites. Molecular analysis of Cryptosporidium samples from infected primates revealed the presence of four major clades of C. parvum, with some isolates closely related to zoonotic C. parvum genotypes. Information on the habitats of the infected primates suggests that livestock is the primary source of infection. Several studies have been conducted to investigate the prevalence of Cryptosporidium infection in various livestock animals, particularly in goats, cattle, buffaloes, and swine in Sri Lanka. These studies reveal high prevalence of asymptomatic Cryptosporidium infection in goats and the potential for the transmission of zoonotic C. parvum from goats, cattle and buffaloes to humans. Molecular epidemiological analysis identified new genotypes of Cryptosporidium in domestic bovids (cattle and water buffalo), with no evidence of the commonly reported zoonotic species C. parvum. Waterborne transmission is the most common mode of infection of Cryptosporidium that affect both humans and animals. Studies conducted in human populations are primarily based in hospitals and pre-schools, and conclude that Cryptosporidium infections are a common cause of diarrhoea in children under the age of five. In conclusion, Cryptosporidium infections occur in different species of animals and humans in Sri Lanka and the oocysts have been detected in surface water, which might be an important source of infection for animals and humans in the country. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
241. Comparative Electromagnetic Performance Analysis of Double Stator and Single Stator Superconducting Generators for Direct- Drive Wind Turbines.
- Author
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Elhindi, Mohamed, Ali Abdalla, Modawy Adam, Omar, Abdalwahab, Pranolo, Andri, Mirghani, Abdelhameed, and Omer, Abduelrahman Adam
- Subjects
SYNCHRONOUS generators ,SUPERCONDUCTING magnets ,MAGNETIC flux density ,ELECTROMAGNETISM ,TORQUE control - Abstract
Superconducting synchronous generators, especially for 10-MW direct-drive wind power systems, are gaining prominence due to their lightweight, compact design, lowering energy generation costs compared to conventional generators. With the ability to generate high magnetic fields. various approaches are exist for designing such generators for example modular superconducting generators which allow for easier assembly, maintenance, and scalability by dividing the generator into smaller, interchangeable components and single stator which simplifying the generator's design and reducing manufacturing costs. This study introduces a novel concept of a double-stator superconducting generator alongside a conventional single-stator superconducting generator, aiming to investigate and contrast the electromagnetic performance of both machine types considering different number pole pairs. Booth of the machines has been designed and studied applying 2d finite element model (COMSOL Multiphysics). The compared machine parameters include: the flux linkage and electromagnetic torque. Our study and compression of the two machines reveal that the double stator superconducting generator is characterized by high electromagnetic torque compared to its single-stator counterpart. the analysis also reveals that increasing the pole pairs number leads to high electromagnetic torque and higher magnetic flux density. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
242. Affirmative Action, Paternalism, and Respect.
- Author
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Bengtson, Andreas and Møller Lyngby Pedersen, Viki
- Subjects
AFFIRMATIVE action programs ,PATERNALISM ,PATIENT autonomy ,RESPECT - Abstract
This article investigates the hitherto under-examined relations between affirmative action, paternalism, and respect. We provide three main arguments. First, we argue that affirmative action initiatives are typically paternalistic and thus disrespectful towards intended beneficiaries who oppose them. Second, we argue that not introducing affirmative action can be disrespectful towards these potential beneficiaries because such inaction involves a failure to recognize their moral worth adequately. Third, we argue that the paternalistic disrespect involved in affirmative action is alleviated when the potential beneficiaries' preferences against such initiatives are adaptive. We conclude that, although there is a relevant sense in which paternalistic affirmative action is disrespectful, it may be more disrespectful not to pursue such policies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
243. Unlocking the Anticancer Potential of Ionic Liquids.
- Author
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Mohd Noor, Najihah, Elgharbawy, Amal A. M., Moniruzzaman, Muhammad, and Goto, Masahiro
- Subjects
IONIC liquids ,CYTOTOXINS ,CANCER prognosis ,CANCER treatment - Abstract
Despite advances in cancer treatment, many types of cancer still have high mortality rates, and the existing therapies can cause considerable side effects. Therefore, discovering new therapies, especially ones with fewer side effects, is desirable to improve the outcomes for cancer patients. Ionic liquids (ILs) have emerged as potential candidates for cancer treatment because of their particular physicochemical properties, which can be tailored for specific applications. In recent years, interest in exploring the potential of ILs in cancer treatment has been growing, and several studies have demonstrated the effectiveness of ILs in inhibiting cancer‐cell growth. This review provides insight into the anticancer potential of ILs, exploring the diverse applications and the underlying mechanisms behind the cytotoxicity toward cancer cells of ILs. Understanding the mechanisms behind the cytotoxicity of ILs can aid in the design and optimization of IL‐based cancer therapies. By focusing on specific pathways and targets, IL‐based cancer therapies may be developed that offer new possibilities for treating this devastating disease. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
244. Relational leadership and organizational citizenship behavior: do employee well-being and employee voice matter?
- Author
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Ansong, Abraham, Addison, Rhodaline Abena, Yeboah, Moses Ahomka, and Ansong, Linda Obeng
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EMPLOYEE psychology ,CORPORATE culture ,HEALTH services administration ,PUBLIC hospitals ,SUPERVISION of employees ,CRONBACH'S alpha ,OCCUPATIONAL roles ,LEADERSHIP ,QUESTIONNAIRES ,STRUCTURAL equation modeling ,EMPLOYEE participation in management ,SURVEYS ,MOTIVATION (Psychology) ,ORGANIZATIONAL effectiveness ,SOCIAL skills ,COMMUNICATION ,FACTOR analysis ,WELL-being ,DISCRIMINANT analysis - Abstract
Purpose: This study aims to investigate the mediation effects of employee voice and employee well-being on the relationship between relational leadership and organizational citizenship behavior. Design/methodology/approach: This study used a Web-based survey method to collect data from 301 respondents in the four public hospitals of the Sekondi-Takoradi Metropolis. This study used PLS-SEM (WarpPLS) to test the study's hypotheses. Findings: The findings show that relational leadership has a positive impact on organizational citizenship behavior, and that this link is mediated in part by both employee voice and employee well-being. Practical implications: This study demonstrates the importance of leaders, paying close attention to employees' well-being and opinions when attempting to drive organizational citizenship behavior in the health sector. Originality/value: Based on the review of the extant literature on the impact of leadership on employee behavior and to the best of the authors' knowledge, it is likely that this study will be the first to show how relational leadership, employee voice, employee well-being and organizational citizenship behavior are related in the health sector, thereby advancing the thrusts of the social exchange and relational leadership theories. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
245. Green Synthesis and Theoretical Study of New Azepinodiazepine Derivatives with Biological Activity: Application of Fe3O4/ZnO@MWCNT.
- Author
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Azizi, Zahra, Ghazvini, Maryam, Afrashteh, Siavash, and Hossaini, Zinatossadat
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SUSTAINABLE chemistry ,ALKYL bromides ,GLYCOSIDASE inhibitors ,CATALYTIC activity ,AMMONIUM acetate - Abstract
In this study, we synthesized azepinodiazepine derivatives in high yields using multicomponent reactions of isatins, activated acetylenic compounds, alkyl bromides, methyl aziridine and ammonium acetate in the presence of Fe
3 O4 /ZnO@MWCNT as a high-performance catalyst and teiethyl amine in water at room temperature. The Fe3 O4 /ZnO@MWCNT synthesizes using Petasites hybridus rhizome water extract as a green media and moderate base. Also, the catalytic activity of the green synthesized Fe3 O4 /ZnO@MWCNT MNCs was evaluated in the reduction of organic pollutants such as 4-nitrophenol (4-NP) in water at mild conditions. The results indicated that the biosynthesized NCs have very high and effective catalytic activity for organic pollutants within a few seconds. Investigation of the antioxidant ability of synthesized compounds using radical trapping of diphenyl-picrylhydrazine (DPPH) and ferric reduction power experiment is another purpose of this research. Also, the antimicrobial activity of some synthesized compounds was proved by employing the disk diffusion test on Gram-positive and Gram-negative bacteria. Also, to better understanding reaction mechanism density functional theory (DFT) based quantum chemical methods have been applied. This procedure has some benefits such as short reaction time, products with excellent yields, simple catalyst and product separation. Green chemistry is the use of a set of principles to reduce or eliminate the use or generation of unsafe materials in the design, fabrication and applications of chemical products. Among solvents, water is a green solvents and very suitable for performing organic reaction. The present procedure avoids the use of toxic solvent. Some representatives of this class of azaheterocycles are known as antiviral agents, glycosidase inhibitors, anticancer agents or antidiabetics. Therefore, in view of their medicinal relevance, an increasing number of synthetic methods have been described in recent years for the construction of highly substituted azepine derivatives. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
246. Risk language barriers in a globalized world: insights from female managers from Slovenia.
- Author
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Tomec, Tina and Gričar, Sergej
- Subjects
COMMUNICATION barriers ,WOMEN executives ,RISK management in business ,ORGANIZATIONAL communication ,EXPERTISE - Abstract
Background: In today's interconnected and globalised business environment, effective risk management is essential for organisations to achieve sustainable success. However, communication and understanding risks across cultural and linguistic boundaries pose significant challenges. This paper explores the concept of risk language barriers and their impact on corporate management and performance. Purpose: This research examines the causes, consequences, and potential solutions to overcome risk language barriers in a globalised world. By shedding light on the importance of effective risk communication in a diverse and interconnected business environment, the study seeks to provide insights into the significance of addressing these barriers for successful management outcomes. Study design/methodology/approach: The study conducted in Novo Mesto, Slovenia, in February 2023 uses data from in-depth interviews and a focus group to investigate risk language barriers. The participants are women entrepreneurs with prior experience in cross-cultural communication and managing people in different countries, e.g. a Slovenian sales guru with a penchant for transcending borders and a Maltese digital strategist who, through global collaboration and expertise, ensures that every corner of the Slovenian organisation aligns with its overarching goals. Their experiences explore the challenges of risk language and the need for intercultural communication skills. Findings/conclusions: The research findings indicate that addressing risk language barriers is a strategic imperative for achieving successful management outcomes in a globalised business landscape. Overcoming these barriers requires a collaborative and proactive approach to risk communication. Developing intercultural communication skills allows individuals to navigate diverse environments effectively, provides them with more excellent networking opportunities, broadens their horizons, and fosters personal development. Furthermore, managers can strengthen relationships with clients and partners worldwide by addressing risk language barriers effectively. Limitations/future research: The study has limitations regarding its focus on women entrepreneurs. Future research should include diverse demographics and industries, conduct quantitative analyses, and explore technology's role in bridging the risk language gap and associated challenges. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
247. Gene Expression Profiles of HSP70 and HSP90 Genes and Biochemical Responses in Juvenile Abalone, Haliotis diversicolor squamata in Response to Total Suspended Solids.
- Author
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Yasa, Ngurah Sedana, Purnomo, Sugeng Joko, Anshory, Lutfi, Murwantoko, Isnansetyo, Alim, and Handayani, Niken Satuti Nur
- Published
- 2024
- Full Text
- View/download PDF
248. An integrated review and analysis of urban building seismic disaster management based on BIM-GIS.
- Author
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Maltseva, Irina, Meng, Tianxin, Xiao, Shuoting, Cao, Yizhi, and Zeng, Lingjian
- Published
- 2024
- Full Text
- View/download PDF
249. Adaptive Digital Leadership Approaches for Self-engagement to Overcome Digital Transformation Gaps.
- Author
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Simonek, Andrea Alec, Imhof, Denis, and Grivas, Stella Gatziu
- Subjects
LEADERSHIP ,DESIGN science ,QUALITATIVE research ,EMPLOYEES ,SEMI-structured interviews - Abstract
Digital transformation, forced by a rapidly changing environment and the increasing speed of technological advancements, enables various valuable opportunities in the business context, like increased efficiency, lower costs, and thus enhanced competitiveness, and manifold, complex challenges, like fast-changing customer expectations, increasing job demands, new value creation structures, and disruptive competition from outside the traditional industry boundaries. This often leads to business process reengineering and urges the strategic realignment of management and leadership styles based on competitive positions and corporate goals. In digital transformation, value impedance defines resistances encountered when integrating new digital technologies and processes into existing systems and workflows. Similarly, digital transformation gaps such as the business model gap are discrepancies preventing organizations from fully exploiting benefits and overcoming the challenges of digital transformation. The connection of digital transformation gaps and value impedance is recommended to avoid conflicts when facing digital transformation. However, as many organizations face difficulties with that alignment, this paper introduces the topic of digital transformation gaps, specifically the business model gap, and discusses its bridging with digital leadership aspects regarding self-engagement. Self-engagement enhances employee motivation, innovative work behaviors, performance, and a positive attitude toward change. This research thus answers the following research question: "what digital leadership factors contribute to the development of self-engagement of employees in organizations to bridge the business model gap in digital transformation?" This qualitative research is based on the Design Science Research method and elaborates four matrices with four strategic options each to enhance the self-engagement of employees, based on validated questionnaire items from the existing literature, and iteratively evaluated and further developed through semi-structured interviews with domain experts. Consequently, these four matrices build the basis for bridges to overcome the business model gap in digital transformation. Further research is suggested, on the one hand, to validate the proposed strategic options quantitatively and, on the other hand, to extend the approach with more strategic options also for other focus areas. [ABSTRACT FROM AUTHOR]
- Published
- 2024
250. A Hubble Space Telescope Survey for Novae in M87. II. Snuffing out the Maximum Magnitude–Rate of Decline Relation for Novae as a Non-standard Candle, and a Prediction of the Existence of Ultrafast Novae.
- Author
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Michael M. Shara, Trisha Doyle, Tod R. Lauer, David Zurek, Edward A. Baltz, Attay Kovetz, Juan P. Madrid, Joanna Mikołajewska, J. D. Neill, Dina Prialnik, D. L. Welch, and Ofer Yaron
- Subjects
ASTRONOMICAL surveys ,NOVAE (Astronomy) ,SIMULATION methods & models ,ANDROMEDA Galaxy - Abstract
The extensive grid of numerical simulations of nova eruptions from the work of Yaron et al. first predicted that some classical novae might significantly deviate from the Maximum Magnitude–Rate of Decline (MMRD) relation, which purports to characterize novae as standard candles. Kasliwal et al. have announced the observational detection of a new class of faint, fast classical novae in the Andromeda galaxy. These objects deviate strongly from the MMRD relationship, as predicted by Yaron et al. Recently, Shara et al. reported the first detections of faint, fast novae in M87. These previously overlooked objects are as common in the giant elliptical galaxy M87 as they are in the giant spiral M31; they comprise about 40% of all classical nova eruptions and greatly increase the observational scatter in the MMRD relation. We use the extensive grid of the nova simulations of Yaron et al. to identify the underlying causes of the existence of faint, fast novae. These are systems that have accreted, and can thus eject, only very low-mass envelopes, of the order of 10
−7 –10−8 M⊙ , on massive white dwarfs. Such binaries include, but are not limited to, the recurrent novae. These same models predict the existence of ultrafast novae that display decline times, t2, to be as short as five hours. We outline a strategy for their future detection. [ABSTRACT FROM AUTHOR]- Published
- 2017
- Full Text
- View/download PDF
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