Academic literature on the topic '10-K reports'
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Journal articles on the topic "10-K reports"
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Bamber, E. Michael, and Linda Smith Bamber. "Using 10-K Reports Brings Management Accounting to Life." Issues in Accounting Education 21, no. 3 (August 1, 2006): 267–90. http://dx.doi.org/10.2308/iace.2006.21.3.267.
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The accounting profession and business community have called for educators to present accounting in more realistic business contexts. Annual reports and 10-Ks provide a wealth of information that brings accounting to life, but use of these reports is typically confined to financial accounting courses. The first objective of this paper is to describe a process by which instructors can use a real companya's 10-K to create a series of mini-cases for cost and management accounting courses. These cases are intended to bridge the gap between typical end-of-chapter problems and full-blown Harvard-style cases. A series of cases based on the same company not only increases student interest, but is also an efficient way to help students understand and start to grapple with the ambiguity and complexity inherent in real-world management accounting (factors absent from most structured textbook problems). Applying a variety of different management accounting tools and techniques to the same company helps students integrate what can appear to be a large set of loosely related topics, and better appreciate the broad role management accounting plays in supporting strategic business decisions. Our second objective is to provide a specific illustration of a series of 10-K-based cases. We have successfully used these cases in both the undergraduate junior level cost/management accounting course, and in M.B.A. introductory core and elective courses.
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Kim, Chansog (Francis), Ke Wang, and Liandong Zhang. "Readability of 10‐K Reports and Stock Price Crash Risk." Contemporary Accounting Research 36, no. 2 (April 26, 2019): 1184–216. http://dx.doi.org/10.1111/1911-3846.12452.
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Karapandza, Rasa. "Stock returns and future tense language in 10-K reports." Journal of Banking & Finance 71 (October 2016): 50–61. http://dx.doi.org/10.1016/j.jbankfin.2016.04.025.
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Wang, Changjiang, K. Raghunandan, and Ruth Ann McEwen. "Non-Timely 10-K Filings and Audit Fees." Accounting Horizons 27, no. 4 (August 1, 2013): 737–55. http://dx.doi.org/10.2308/acch-50591.
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SYNOPSIS The SEC requires that firms failing to file their annual reports within the specified deadlines file a Form NT 10−K with the Commission. In this paper, we examine the impact of non-timely filings on audit fees. We find that in the case of accelerated filers, audit fees are 26 (12) percent higher for those firms that had a Form NT 10-K filing in the previous (current) year. There is no such statistically significant association between non-timely filing and audit fees in the case of non-accelerated filers, but this result is driven by the clients of non-Big 4 auditors. Our results add to the stream of research related to non-timely filings of annual reports, and provide additional evidence about differences in audit quality/risk between Big 4 and non-Big 4 audit firms. The results also reinforce findings from recent studies about the significant differences in the market for audit services of accelerated and non-accelerated filer firms.
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Cooper, Holly B., Michael T. Ewing, and Sagarika Mishra. "Text-mining 10-K (annual) reports: A guide for B2B marketing research." Industrial Marketing Management 107 (November 2022): 204–11. http://dx.doi.org/10.1016/j.indmarman.2022.10.001.
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Hasan, Mostafa Monzur. "Readability of Narrative Disclosures in 10-K Reports: Does Managerial Ability Matter?" European Accounting Review 29, no. 1 (September 27, 2018): 147–68. http://dx.doi.org/10.1080/09638180.2018.1528169.
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Singh, Purva. "Intelligent Portfolio Management via NLP Analysis of Financial 10-k Statements." International Journal of Artificial Intelligence & Applications 11, no. 6 (November 30, 2020): 13–25. http://dx.doi.org/10.5121/ijaia.2020.11602.
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The paper attempts to analyze if the sentiment stability of financial 10-K reports over time can determine the company’s future mean returns. A diverse portfolio of stocks was selected to test this hypothesis. The proposed framework downloads 10-K reports of the companies from SEC’s EDGAR database. It passes them through the preprocessing pipeline to extract critical sections of the filings to perform NLP analysis. Using Loughran and McDonald sentiment word list, the framework generates sentiment TF-IDF from the 10-K documents to calculate the cosine similarity between two consecutive 10-K reports and proposes to leverage this cosine similarity as the alpha factor. For analyzing the effectiveness of our alpha factor at predicting future returns, the framework uses the alphalens library to perform factor return analysis, turnover analysis, and for comparing the Sharpe ratio of potential alpha factors. The results show that there exists a strong correlation between the sentiment stability of our portfolio’s 10-K statements and its future mean returns. For the benefit of the research community, the code and Jupyter notebooks related to this paper have been open-sourced on Github1.
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Li, Edward Xuejun, and K. Ramesh. "Market Reaction Surrounding the Filing of Periodic SEC Reports." Accounting Review 84, no. 4 (July 1, 2009): 1171–208. http://dx.doi.org/10.2308/accr.2009.84.4.1171.
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ABSTRACT: Using data from the EDGAR era, we find a significant market reaction surrounding quarterly periodic reports only when their filing coincides with the first public disclosure of earnings, although that for 10-K reports is not subsumed by earnings releases. However, after eliminating incidence of concurrent earnings releases, the 10-K market reaction is restricted to a quarter of the reports that are filed around calendar quarter-ends. The calendar quarter-end price and volume effects are unrelated to the filing of periodic reports and are not explained by self-selection. However, while the quarter-end volume reaction is indistinguishable between filers and non-filers, we find an incremental price reaction to 10-K filings at calendar quarter-ends in recent times. We provide evidence that the calendar-time effect is partially due to an intraindustry information transfer that is a function of the incidence of 10-K reports at quarter-ends. Finally, equity analyst reactions are muted around periodic filings, with no evidence that they contribute to quarter-end information transfer.
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Cazier, Richard A., and Ray J. Pfeiffer. "Why are 10-K Filings So Long?" Accounting Horizons 30, no. 1 (July 1, 2015): 1–21. http://dx.doi.org/10.2308/acch-51240.
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SYNOPSIS This study provides evidence on relative magnitudes of factors that appear to drive 10-K length. We employ statistical analysis and text analysis software to partition 10-K length into the portions explained by each of three fundamental determinants: (1) firms' operating complexity, (2) disclosure redundancy, and (3) residual disclosure. Our primary analyses shed light on the relative magnitudes of each of these components and on the extent to which each varies across firms. Disclosure redundancy and operating complexity explain roughly equal amounts of variation in 10-K length within our sample. However, 10-K length unexplained by redundancy or firms' operating complexity (residual disclosure) accounts for the largest degree of variation in 10-K length. Our results are consistent with the notion that a substantial amount of disclosure volume contained in 10-K reports is attributable to managerial discretion in how firms respond to mandatory disclosure requirements. Our study expands prior literature that has focused largely on the consequences of 10-K length and provides important insights for policy makers and regulators seeking to improve disclosure requirements. Data Availability: Data available upon request.
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Qi, Daqing, Woody Wu, and In-Mu Haw. "The Incremental Information Content of SEC 10-K Reports Filed under the EDGAR System." Journal of Accounting, Auditing & Finance 15, no. 1 (January 2000): 25–46. http://dx.doi.org/10.1177/0148558x0001500102.
Full textDissertations / Theses on the topic "10-K reports"
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Daruty, Matthew. "The Fall of the 10-K Report: Measuring the Impact of Accounting Ratios on Financial Performance." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/cmc_theses/2225.
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The annual 10-K report has historically been the most important aspect in assessing the position of a publicly held company. However, as the flow of information has increased with the dawn of new technologies, less and less attention has been paid to these audited financial statements. In order to assess if investors are still reacting to the information contained in the annual report, this paper examines the relationship between accounting ratios and stock price in banks traded on United States stock exchanges. By examining accounting ratios instead of simply looking at Earnings Per Share, new information was revealed regarding what aspects of the annual report investors react to. Ratios that incorporate information that is difficult to predict, such as leverage or allowance accounts were more likely to affect a stock’s performance, while those that contained information that is more readily available from other sources had less of an effect.
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Hsiu-NingYang and 楊秀寧. "Readability of 10-K reports and corporate tax avoidance." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/29r77u.
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(9576107), Ananya B. Sheth. "PATHWAYS TO ENTERPRISE RESILIENCE." Thesis, 2021.
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Resilience is studied as a systemic property in several disciplines such as engineering, psychology, systems biology, and ecological sciences. Yet, the system view on resilience is not pervasive in management science. This dissertation is on Enterprise Resilience, which is an emerging topic within the fields of organization and management science. Corporate enterprises are viewed as type 1 complex adaptive systems (CAS) operating within an external business environment. Thus, perturbations occurring in the environment affect enterprises, whose resilience then depends on their adaptive response to them. Therefore, the focus is on system perturbances and on investigating drivers of the enterprises’ adaptive response. As a result, enterprise resilience is more granularly defined as an enterprise’s ability to continually remain valuable to stakeholders by simultaneously managing short-term shocks and long-term stressors. This re-definition brings forth an actionable pathway to enterprise resilience- the pursuit of improved management of the enterprise’s risk and growth management functions.
Two challenging issues plaguing the risk and growth functions are the lack of a comprehensive understanding of risks (especially of unknowns) and their inter-connections, and a weak link between risk management and the enterprise’s growth strategy intended to continually and increasingly generate value. This work addresses both issues via the development of an enterprise-agnostic comprehensive risk typology, and by building a conceptual link between risk and growth strategy through the business model construct and its use in the study of repeatable patterns of innovation. Therefore, this work develops one pathway toward enterprise resilience i.e., via improved risk management and systematic growth management. Furthermore, it advances knowledge by bridging the theoretical conceptualization of an enterprise as a CAS1 into actionable methods for practice in the form of risk management tools and systematic innovation frameworks that aid the enterprise’s adaptive response.
The interdisciplinary dissertation develops hypotheses and employs appropriate qualitative and quantitative methods to test them. Overall, a theory building process is undertaken using the constructionist school of thought and using methods based in inductive logic such as the scholarship of integration, thematic analysis, and case studies. Additionally, to achieve wide and comprehensive coverage, data-driven quantitative methods using advanced computing such as data mining, machine learning, and natural language processing are employed.
Books on the topic "10-K reports"
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United States. Securities and Exchange Commission., ed. Annual, quarterly, and current reports: Forms 8-K, 10-Q, 10-K, and 11-K, under the Securities Exchange Act of 1934 : Regulation S-K information integrated as required. Philadelphia (10th & Spring Garden Streets, Philadelphia 19123): Packard Press, 1985.
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N, Gates Megan, and Massachusetts Continuing Legal Education, Inc. (1982- ), eds. Preparation of the annual report and form 10-K: Best practices and practical tips. [Boston, Mass.]: MCLE, 2004.
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Disclosure & other lessons learned after Enron: What you need to know now to file your 10-K & other forms. New York, N.Y: Practising Law Institute, 2002.
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Benestad, Rasmus. Climate in the Barents Region. Oxford University Press, 2018. http://dx.doi.org/10.1093/acrefore/9780190228620.013.655.
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The Barents Sea is a region of the Arctic Ocean named after one of its first known explorers (1594–1597), Willem Barentsz from the Netherlands, although there are accounts of earlier explorations: the Norwegian seafarer Ottar rounded the northern tip of Europe and explored the Barents and White Seas between 870 and 890 ce, a journey followed by a number of Norsemen; Pomors hunted seals and walruses in the region; and Novgorodian merchants engaged in the fur trade. These seafarers were probably the first to accumulate knowledge about the nature of sea ice in the Barents region; however, scientific expeditions and the exploration of the climate of the region had to wait until the invention and employment of scientific instruments such as the thermometer and barometer. Most of the early exploration involved mapping the land and the sea ice and making geographical observations. There were also many unsuccessful attempts to use the Northeast Passage to reach the Bering Strait. The first scientific expeditions involved F. P. Litke (1821±1824), P. K. Pakhtusov (1834±1835), A. K. Tsivol’ka (1837±1839), and Henrik Mohn (1876–1878), who recorded oceanographic, ice, and meteorological conditions.The scientific study of the Barents region and its climate has been spearheaded by a number of campaigns. There were four generations of the International Polar Year (IPY): 1882–1883, 1932–1933, 1957–1958, and 2007–2008. A British polar campaign was launched in July 1945 with Antarctic operations administered by the Colonial Office, renamed as the Falkland Islands Dependencies Survey (FIDS); it included a scientific bureau by 1950. It was rebranded as the British Antarctic Survey (BAS) in 1962 (British Antarctic Survey History leaflet). While BAS had its initial emphasis on the Antarctic, it has also been involved in science projects in the Barents region. The most dedicated mission to the Arctic and the Barents region has been the Arctic Monitoring and Assessment Programme (AMAP), which has commissioned a series of reports on the Arctic climate: the Arctic Climate Impact Assessment (ACIA) report, the Snow Water Ice and Permafrost in the Arctic (SWIPA) report, and the Adaptive Actions in a Changing Arctic (AACA) report.The climate of the Barents Sea is strongly influenced by the warm waters from the Norwegian current bringing heat from the subtropical North Atlantic. The region is 10°C–15°C warmer than the average temperature on the same latitude, and a large part of the Barents Sea is open water even in winter. It is roughly bounded by the Svalbard archipelago, northern Fennoscandia, the Kanin Peninsula, Kolguyev Island, Novaya Zemlya, and Franz Josef Land, and is a shallow ocean basin which constrains physical processes such as currents and convection. To the west, the Greenland Sea forms a buffer region with some of the strongest temperature gradients on earth between Iceland and Greenland. The combination of a strong temperature gradient and westerlies influences air pressure, wind patterns, and storm tracks. The strong temperature contrast between sea ice and open water in the northern part sets the stage for polar lows, as well as heat and moisture exchange between ocean and atmosphere. Glaciers on the Arctic islands generate icebergs, which may drift in the Barents Sea subject to wind and ocean currents.The land encircling the Barents Sea includes regions with permafrost and tundra. Precipitation comes mainly from synoptic storms and weather fronts; it falls as snow in the winter and rain in the summer. The land area is snow-covered in winter, and rivers in the region drain the rainwater and meltwater into the Barents Sea. Pronounced natural variations in the seasonal weather statistics can be linked to variations in the polar jet stream and Rossby waves, which result in a clustering of storm activity, blocking high-pressure systems. The Barents region is subject to rapid climate change due to a “polar amplification,” and observations from Svalbard suggest that the past warming trend ranks among the strongest recorded on earth. The regional change is reinforced by a number of feedback effects, such as receding sea-ice cover and influx of mild moist air from the south.
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United States. National Aeronautics and Space Administration., ed. Issues in the development of a 10 MBPS K=15 Viterbi decoder: Semi-annual status report, period covered, February 1994 through June 1994. Las Cruces, N.M: New Mexico State University, Electrical and Computer Engineering, 1994.
Find full textBook chapters on the topic "10-K reports"
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"Constructing and Filing the Quarterly 10-Q and Annual 10-K Reports." In Running a Public Company, 267–83. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119203254.ch25.
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Taber, Douglass F. "Establishing Arrays of Stereogenic Centers: The Sato/Chida Synthesis of (-)-Kainic Acid." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0046.
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Benjamin List of the Max-Planck-Institut, Mülheim, devised (J. Am. Chem. Soc. 2010, 132, 10227) a catalyst system for the stereocontrolled epoxidation of a trisubstituted alkenyl aldehyde 1. Takashi Ooi of Nagoya University effected (Angew. Chem. Int. Ed. 2010, 49, 7562; see also Org. Lett. 2010, 12, 4070) enantioselective Henry addition to an alkynyl aldehyde 3. Madeleine M. Joullié of the University of Pennsylvania showed (Org. Lett. 2010, 12, 4244) that an amine 7 added selectively to an alkynyl aziridine 6. Yutaka Ukaji and Katsuhiko Inomata of Kanazawa University developed (Chem. Lett. 2010, 39, 1036) the enantioselective dipolar cycloaddition of 9 with 10. K. C. Nicolaou of Scripps/La Jolla observed (Angew. Chem. Int. Ed. 2010, 49, 5875; see also J. Org. Chem. 2010, 75, 8658) that the allylic alcohol from enantioselective reduction of 12 could be hydrogenated with high diastereocontrol. Masamichi Ogasawara and Tamotsu Takahashi of Hokkaido University added (Org. Lett. 2010, 12, 5736) the allene 14 to the acetal 15 with substantial stereocontrol. Helen C. Hailes of University College London investigated (Chem. Comm. 2010, 46, 7608) the enzyme-mediated addition of 18 to racemic 17. Dawei Ma of the Shanghai Institute of Organic Chemistry, in the course of a synthesis of oseltamivir (Tamiflu), accomplished (Angew. Chem. Int. Ed. 2010, 49, 4656) the enantioselective addition of 21 to 20. Shigeki Matsunaga of the University of Tokyo and Masakatsu Shibasaki of the Institute of Microbial Chemistry developed (Org. Lett. 2010, 12, 3246) a Ni catalyst for the enantioselective addition of 23 to 24. Juthanat Kaeobamrung and Jeffrey W. Bode of ETH-Zurich and Marisa C. Kozlowski of the University of Pennsylvania devised (Proc. Natl. Acad. Sci. 2010, 107, 20661) an organocatalyst for the enantioselective addition of 27 to 26. Yihua Zhang of China Pharmaceutical University and Professor Ma effected (Tetrahedron Lett. 2010, 51, 3827) the related addition of 27 to 29. There have been scattered reports on the stereochemical course of the coupling of cyclic secondary organometallics. In a detailed study, Paul Knochel of Ludwig-Maximilians- Universität München showed (Nat. Chem. 2020, 2, 125) that equatorial bond formation dominated, exemplified by the conversion of 31 to 33.
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Barbrey, John W. "Evaluating Campus Safety Messages at 99 Public Universities in 2010." In Using Social and Information Technologies for Disaster and Crisis Management, 1–19. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2788-8.ch001.
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In 2009, the U.S. Department of Education published an Action Guide for Emergency Management at Institutions of Higher Education (U.S. Department of Education, 2009). In 2006, the Virginia State Crime Commission issued a prescient “Final Report: Study on Campus Safety (HJR 122)” regarding Virginia’s colleges and universities (Virginia State Crime Commission, 2006). Gray (2009) provided results from a “Columbine 10-Year Anniversary Survey”, which reviewed recent campus safety improvements of 435 K-12 and university respondents. From the three documents, prescribed campus safety activities were identified that could be consistently found in the stated programs and policies on university websites. Of these activities, 18 separate criteria upon which a university’s online emergency preparedness/safety/security messages could be evaluated through content analysis were conceptualized (coding: 1= school has criterion, 0= does not), to estimate the quality of the overall preparedness message of each institution in the small sample (n = 99) of universities, representing all 50 states in 2010.
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Kumar Kambila, Vijaya. "Structural, Optical, and Electrical Studies of PAN-Based Gel Polymer Electrolytes for Solid-State Battery Applications." In Management and Applications of Energy Storage Devices. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.98825.
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Gel polymer electrolyte films (GPEs) based on polyacrylonitrile (PAN) complexed with NaF salt and an Al2O3 nanofiller were prepared via solution cast method. Structural studies were performed to investigate the order of conductivity under the influence of salt and nanofillers. The prepared films were characterized using energy dispersive x-ray spectrometry (EDS) to determine the chemical composition in wt%. EDS studies reveal that PAN–NaF with Al2O3 ceramic filler decreases the degree of crystallinity with increasing concentration of the nanofiller. The UV–Vis spectrum was recorded by a Hewlett-Packard HP8452A diode array spectrometer. The structural effect of salt and nanoparticles on the conductivity was also confirmed by UV–Vis spectroscopy. The mechanical properties of the prepared polymer electrolytes were determined using a Universal Tensile Machine (Instron Model 5565, Canada) with a constant crosshead speed of 10 mm/min. The addition of nanoparticles increased both the modulus and the strength of the polymer nanocomposites. Both the tensile strength and Young’s modulus increased with increasing functionalized nanoparticle loading. The change in transition temperature caused by the incorporation of the Al2O3 nanofiller and plasticizer into the PAN+NaF complex was studied by differential scanning calorimetry (DSC) analysis. Additionally, DSC thermograms were recorded to measure the glass transition temperature and melting temperature of PAN-based electrolytes using a Mettler instrument. Conductivity studies were carried out for all the prepared polymer electrolytes to understand the conduction mechanism. The role of the ceramic phase is to reduce the melting temperature, which is ascertained from DSC. The sample containing PAN:NaF (70:30) exhibits the highest conductivity of 1.82 x 10−4 S cm−1 at room temperature (303 K) and 2.96 x 10−3 S cm−1 at 378 K. The polymer electrolytes considered in the present study exhibited an Arrhenius type of conduction. The polymer electrolyte containing 3 wt% Al2O3 nanofiller showed an ionic conductivity of 5.96 × 10−3 S cm−1. To determine transfer numbers, Wagner’s polarization method can be used. From these studies, it is observed that the conduction mechanism is predominantly due to ions. Using this (PAN–NaF– Al2O3) (70:30:3) electrolyte, a solid-state electrochemical cell was fabricated, and its discharge profiles were studied under a constant load of 100 kΩ. Finally, several cell profiles associated with this cell were evaluated and reported.
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B. V., Ravindra, Sriraam N., and Geetha M. "A Decision Tree on Data Mining Framework for Recognition of Chronic Kidney Disease." In Biomedical and Clinical Engineering for Healthcare Advancement, 78–95. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0326-3.ch005.
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The term chronic kidney disease (CKD) refers to the malfunction of the kidney and its failure to remove toxins and other waste products from blood. Typical symptoms of CKD include color change in urine, swelling due to fluids staying in tissue, itching, flank pain, and fatigue. Timely intervention is essential for early recognition of CKD as it affects more than 10 million people in India. This chapter suggests a decision tree-based data mining framework to recognize CKD from Non chronic kidney disease (NCKD). Data sets derived from open source UCI repository was considered. Unlike earlier reported work, this chapter applies the decision rules based on the clustered data through k-means clustering process. Four cluster groups were identified and j48 pruned decision tree-based automated rules were formatted. The performance of the proposed framework was evaluated in terms of sensitivity, specificity, precision, and recall. A new quantitative measure, relative performance, and MCC were introduced which confirms the suitability of the proposed framework for recognition of CKD from NCKD.
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Taber, Douglass. "Stereocontrolled Carbocyclic Construction: The Trauner Synthesis of the Shimalactones." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0080.
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Benjamin List of the Max Planck Institute, Mülheim devised (J. Am. Chem. Soc. 2008, 130, 6070) a chiral primary amine salt that catalyzed the enantioselective epoxidation of cyclohexenone 1 . Larger ring and alkyl-substituted enones are also epoxidized with high ee. Three- and four-membered rings are versatile intermediates for further transformation. Tsutomu Katsuki of Kyushu University developed (Angew. Chem. Int. Ed. 2008, 47, 2450) an elegant Al(salalen) catalyst for the enantioselective Simmons-Smith cyclopropanation of allylic alcohols such as 3. Kazuaki Ishihara of Nagoya University found (J. Am. Chem. Soc. 2007, 129, 8930) chiral amine salts that effected enantioselective 2+2 cycloaddition of α-acyloxyacroleins such as 5 to alkenes to give the cyclobutane 7 with high enantio- and diastereocontrol. Gideon Grogan of the University of York overexpressed (Adv. Synth. Cat. 2008, 349, 916) the enzyme 6-oxocamphor hydrolase in E. coli . The 6-OCH so prepared converted prochiral diketones such as 8 to the cyclopentane 9 in high ee. Richard P. Hsung of the University of Wisconsin found (Organic Lett. 2008, 10, 661) that the carbene produced by oxidation of the ynamide 10 cyclized to 11 with high de. Teck-Peng Loh of Nanyang Technological University extended (J. Am. Chem. Soc. 2008, 130, 7194) butane-2,3-diol directed cyclization to the preparation of the cyclopentane 15. Note that sidechain relative configuration is also controlled. We established (J. Org. Chem. 2008, 73, 3467) that the thermal ene reaction of 17 delivered the tetrasubstituted cyclopentane 18 as a single diastereomer. Tony K. M. Shing of the Chinese University of Hong Kong devised (J. Org. Chem. 2007, 72, 6610) a simple protocol for the conversion of carbohydrate-derived lactones such as 19 to the highly-substituted, enantiomerically-pure cyclohexenone 21. Hiromichi Fujioka and Yasuyuki Kita of Osaka University established (Organic Lett. 2007, 9, 5605) a chiral diol-mediated conversion of the cyclohexadiene 22 to the diastereomerically pure cyclohexenone 24. Dirk Trauner, now of the University of Munich, reported (Organic Lett. 2008, 10, 149) an elegant assembly of the neuritogenic polyketide shimalactone A 28.
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Lambert, Tristan H. "C–O Ring Formation." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0044.
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The enantioselective bromocyclization of dicarbonyl 1 to form dihydrofuran 3 using thiocarbamate catalyst 2 was developed (Angew. Chem. Int. Ed. 2013, 52, 8597) by Ying-Yeung Yeung at the National University of Singapore. Access to dihydrofuran 5 from the cyclic boronic acid 4 and salicylaldehyde via a morpholine-mediated Petasis borono-Mannich reaction was reported (Org. Lett. 2013, 15, 5944) by Xian-Jin Yang at East China University of Science and Technology and Jun Yang at the Shanghai Institute of Organic Chemistry. Chiral phosphoric acid 7 was shown (Angew. Chem. Int. Ed. 2013, 52, 13593) by Jianwei Sun at the Hong Kong University of Science and Technology to catalyze the enantioselective acetalization of diol 6 to form tetrahydrofuran 8 with high stereoselectivity. Jan Deska at the University of Cologne reported (Org. Lett. 2013, 15, 5998) the conversion of glutarate ether 9 to enantiopure tetrahydrofuranone 10 by way of an enzymatic desymmetrization/oxonium ylide rearrangement sequence. Perali Ramu Sridhar at the University of Hyderabad demonstrated (Org. Lett. 2013, 15, 4474) the ring-contraction of spirocyclopropane tetrahydropyran 11 to produce tetrahydrofuran 12. Michael A. Kerr at the University of Western Ontario reported (Org. Lett. 2013, 15, 4838) that cyclopropane hemimalonate 13 underwent conversion to vinylbutanolide 14 in the presence of LiCl and Me₃N•HCl under microwave irradiation. Eric M. Ferreira at Colorado State University developed (J. Am. Chem. Soc. 2013, 135, 17266) the platinum-catalyzed bisheterocyclization of alkyne diol 15 to furnish the bisheterocycle 16. Chiral sulfur ylides such as 17, which can be synthesized easily and cheaply, were shown (J. Am. Chem. Soc. 2013, 135, 11951) by Eoghan M. McGarrigle at the University of Bristol and University College Dublin and Varinder K. Aggarwal at the University of Bristol to stereoselectively epoxidize a variety of aldehydes, as exemplified by 18. The amine 20-catalyzed tandem heteroconjugate addition/Michael reaction of quinol 19 and cinnamaldehyde to produce bicycle 21 with very high ee was reported (Chem. Sci. 2013, 4, 2828) by Jeffrey S. Johnson at the University of North Carolina, Chapel Hill. Quinol ether 22 underwent facile photorearrangement–cycloaddition to 23 under irradiation, as reported (J. Am. Chem. Soc. 2013, 135, 17978) by John A. Porco, Jr. at Boston University and Corey R. J. Stephenson, now at the University of Michigan.
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Taber, Douglass F. "C–H Functionalization." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0021.
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Konstantin P. Bryliakov of the Boreskov Institute of Catalysis devised (Org. Lett. 2012, 14, 4310) a manganese catalyst for the selective tertiary hydroxylation of 1 to give 2. Note that the electron-withdrawing Br deactivates the alternative methine H. Bhisma K. Patel of the Indian Institute of Technology, Guwahati selectively oxidized (Org. Lett. 2012, 14, 3982) a benzylic C–H of 3 to give the corresponding benzoate 4. Dalibor Sames of Columbia University cyclized (J. Org. Chem. 2012, 77, 6689) 5 to 6 by intramolecular hydride abstraction followed by recombination. Thomas Lectka of Johns Hopkins University showed (Angew. Chem. Int. Ed. 2012, 51, 10580) that direct C–H fluorination of 7 occurred predominantly at carbons 3 and 5. John T. Groves of Princeton University reported (Science 2012, 337, 1322) an alternative manganese porphyrin catalyst (not illustrated) for direct fluorination. C–H functionalization can also be mediated by a proximal functional group. John F. Hartwig of the University of California, Berkeley effected (J. Am. Chem. Soc. 2012, 134, 12422) Ir-mediated borylation of an ether 9 in the position β to the oxygen to give 10. Uttam K. Tambar of the UT Southwestern Medical Center devised (J. Am. Chem. Soc. 2012, 134, 18495) a protocol for the net enantioselective amination of 11 to give 12. Conversion of a C–H bond to a C–C bond can be carried out in an intramolecular or an intermolecular sense. Kilian Muñiz of the Catalan Institution for Research and Advanced Studies cyclized (J. Am. Chem. Soc. 2012, 134, 15505) the terminal alkene 13 directly to the cyclopentene 15. Olivier Baudoin of Université Claude Bernard Lyon 1 closed (Angew. Chem. Int. Ed. 2012, 51, 10399) the pyrrolidine ring of 17 by selective activation of a methyl C–H of 16. Jeremy A. May of the University of Houston found (J. Am. Chem. Soc. 2012, 134, 17877) that the Rh carbene derived from 18 inserted into the distal alkyne to give a new Rh carbene 19, which in turn inserted into a C–H bond adjacent to the ether oxygen to give 20.
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Taber, Douglass F. "Metal-Mediated Carbocyclic Construction:The Kobayashi Synthesis of (+)-Fomitellic Acid B." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0073.
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Jin K. Cha of Wayne State University described (J. Org. Chem. 2009, 74, 5528) the diastereoselective intramolecular cyclopropanation of nitriles with homoallylic alcohols such as 1 . Valery V. Fokin of Scripps/La Jolla found (J. Am. Chem. Soc. 2009, 131, 18034) that the diazoimine derived from 4 could add with high enantioselectivity to aryl alkenes, including styrene 5. Andreas Gansäuer of the University of Bonn optimized (Angew. Chem. Int. Ed. 2009, 48 , 8882; Tetrahedron 2009, 65, 10791) the Ti catalyst to enable efficient cyclization of substrates such as 7 to the corresponding cyclobutanes. F. Dean Toste of the University of California, Berkeley, devised (J. Am. Chem. Soc. 2009, 131, 9178) a gold catalyst for the enantioselective ring expansion of a prochiral allene such as 9 to the cyclobutanone 10. David J. Procter of the University of Manchester developed (J. Am. Chem. Soc. 2009, 131, 15467) the SmI2 -mediated cyclization of a lactone such as 11 to the cyclopentanone 12. Shigeki Matsunaga and Masakatsu Shibasaki of the University of Tokyo designed (Chem. Commun. 2009, 5138) a Ni catalyst for the enantioselective condensation of 13 with formaldehyde. Some acyclic β-keto esters could also be hydroxymethylated with high enantiocontrol. Darren J. Dixon, also of the University of Manchester, devised (J. Am. Chem. Soc. 2009, 131, 9140) a Cu catalyst for the enantioselective Conia cyclization of 15 to 16 . K. C. Nicolaou, also of Scripps/La Jolla, reported (Angew. Chem. Int. Ed. 2009, 48, 6293) a Rh catalyst for the related cyclization of 17 to 18. Ryo Shintani and Tamio Hayashi of Kyoto University showed (J. Am. Chem. Soc. 2009, 131, 13588) that a Rh catalyst could effect enantioselective conjugate addition of a tetraaryl borate even to a 3-methyl cyclohexenone 19, to establish the cyclic quaternary center. Alexandre Alexakis of the University of Geneva established (Chem. Commun . 2009, 3868) that with the easily ionized allylic bromide 21, Cu-mediated coupling with the alkyl Grignard 22 proceeded with substantial asymmetric induction. Jon D. Rainier of the University of Utah devised (Organic Lett. 2009, 11, 38774) conditions for effecting Ti-mediated intramolecular metathesis between an alkene and a lactam carbonyl, giving the cyclic enamide 24.
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Lambert, Tristan H. "Functional Group Reduction." In Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0010.
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The reduction of azobenzene 1 with catalyst 2 was reported (J. Am. Chem. Soc. 2012, 134, 11330) by Alexander T. Radosevich at Pennsylvania State University, representing a unique example of a nontransition metal-based two-electron redox catalysis platform. Wolfgang Kroutil at the University of Graz found (Angew. Chem. Int. Ed. 2012, 51, 6713) that diketone 4 was converted to piperidinium 5 with very high stereoselectivity using a transaminase followed by reduction over Pd/C. Dennis P. Curran at the University of Pittsburgh reported (Org. Lett. 2012, 14, 4540) that NHC-borane 7 is a convenient reducing agent for aldehydes and ketones, showing selectivity for the former as in the monoreduction of 6 to 8. A catalytic reduction of esters to ethers with Fe3(CO)12 and TMDS, as in the conversion of 9 to 10, was developed (Chem. Commun. 2012, 48, 10742) by Matthias Beller at the Leibniz-Institute for Catalysis. Meanwhile, iridium catalysis was used (Angew. Chem. Int. Ed. 2012, 51, 9422) by Maurice Brookhart at the University of North Carolina at Chapel Hill for the reduction of esters to aldehydes with diethylsilane (e.g., 11 to 12). As an impressive example of selective reduction, Ohyun Kwon at UCLA reported (Org. Lett. 2012, 14, 4634) the conversion of ester 13 to aldehyde 14, leaving the malonate moiety intact. The cobalt complex 16 was found (Angew. Chem. Int. Ed. 2012, 51, 12102) by Susan K. Hanson at Los Alamos National Laboratory to be an effective catalyst for C=O, C=N, and C=C bond hydrogenation, including the conversion of alkene 15 to 17. The use of frustrated Lewis pair catalysis for the low-temperature hydrogenation of alkenes such as 18 was developed (Angew. Chem. Int. Ed. 2012, 51, 10164) by Stefan Grimme at the University of Bonn and Jan Paradies the Karlsruhe Institute of Technology. Guanidinium nitrate was found (Chem. Commun. 2012, 48, 6583) by Kandikere Ramaiah Prabhu at the Indian Institute of Science to catalyze the hydrazine-based reduction of alkenes such as 20. The hydrogenation of thiophenes is difficult for a number of reasons, but now Frank Glorius at the University of Münster has developed (J. Am. Chem. Soc. 2012, 134, 15241) an effective system for the highly enantioselective catalytic hydrogenation of thiophenes and benzothiophenes, including 22.
Conference papers on the topic "10-K reports"
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Soong, Gim Hoy, and Chye Cheah Tan. "Sentiment Analysis on 10-K Financial Reports using Machine Learning Approaches." In 2021 IEEE 11th International Conference on System Engineering and Technology (ICSET). IEEE, 2021. http://dx.doi.org/10.1109/icset53708.2021.9612552.
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Hsieh, Hsin-Ting, and Diana Hristova. "Transformer-based Summarization and Sentiment Analysis of SEC 10-K Annual Reports for Company Performance Prediction." In Hawaii International Conference on System Sciences. Hawaii International Conference on System Sciences, 2022. http://dx.doi.org/10.24251/hicss.2022.218.
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Chen, Shuzhen, Beichen Lin, Li Shen, Jianghuai Cai, Yancheng You, and Wenjiang Xu. "Single-Shot Spontaneous Raman Scattering Measurements In A Reverse-Flow Aeroengine Model Combustor Under Elevated Inlet Temperature And Pressure." In GPPS Xi'an21. GPPS, 2022. http://dx.doi.org/10.33737/gpps21-tc-270.
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Monitoring scalar fields within aero-engine combustor is of particular importance for performance promotion and engine failure diagnostics. Due to harsh operating conditions and quite limited space, direct measurements of combustion state within near-real conditioned engine combustor were rarely reported. Therefore, this paper reports spontaneous Raman scattering (SRS) measurements of temperature and major species, such as CO2, H2O, CO, N2, within a reverseflow model combustor fueled by kerosene under elevated incoming temperature of 500 K and pressure of 5 bar. The model combustor was on purposely designed to reserve both outer shell and inner liner, and the liquid kerosene was fueled with a customized atomizer. The SRS measurement were conducted at 10 characteristic spatial locations and varying equivalence ratio. The measured species and temperature revealed strong effects of turbulence-chemistry interaction and deviation from chemical equilibrium. Together with the CFD simulation, the SRS data was used to evaluate the performance of the model combustor.
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Baheri, S., B. A. Jubran, and S. P. Alavi Tabrizi. "The Effect of Turbulence Intensity on Film Cooling of Gas Turbine Blade From Trenched Shaped Holes." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50318.
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This paper reports a computational investigation on the effects of mainstream turbulence intensity on film cooling effectiveness from trenched holes over a symmetrical blade. Computational solutions of the steady, Reynolds-Averaged Navier-Stokes equations are obtained using a finite volume method with k – ε Turbulence model. Whenever possible, computational results are compared with experimental ones from data found in the open literature. Computational results are presented for a row of 25 deg forward-diffused film hole within transverse slot injected at 35 deg to AGTB symmetrical blade. Four blowing ratios, M = 0.3, 0.5, 0.9 and 1.3 are studied together with four mainstream turbulence intensities of Tu = 0.5%, 2%, 4% and 10%. Results indicate that the trenched shaped holes tend to give better film cooling effectiveness than that obtained from discrete shaped holes for all blowing ratios and all turbulence intensities. The trenching of shaped holes has changed the optimum blowing ratio and also the location of re-attachment of separated jet at high blowing ratios. Moreover, it has been found that the effect of mainstream turbulence intensity for trenched shaped holes is similar to that obtained for discrete shaped holes with the exception that the sensitivity of film cooling effectiveness to turbulence intensity has decreased for trenched shaped holes.
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Stepnova, Liudmila, and Elizaveta Prokopenko. "Susceptibility to Internet Addiction in Russia: Geography, Age, And Frustrated Existential Values." In The Public/Private in Modern Civilization, the 22nd Russian Scientific-Practical Conference (with international participation) (Yekaterinburg, April 16-17, 2020). Liberal Arts University – University for Humanities, Yekaterinburg, 2020. http://dx.doi.org/10.35853/ufh-public/private-2020-47.
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The article is the first in Russia to present sociologically correct (relative to the general population) and simultaneously psychologically profound results of 2 All-Russian Internet surveys: screening-diagnostics of the level of resistance/vulnerability to Internet addiction in Russia and its federal districts (2017: n = 3 007, ages 10-40); identification of words - markers of values for norm and risk groups (2018: n = 144, ages 18-28). Methods: Internet addiction test (A. E. Zichkina), self-reports on the duration of the offline period per year, 16-FLO (R. Kettell, MD self-evaluation scale, B intellect scale), ‘Short portrait questionnaire of the Big Five (B5-10)’ (M.S. Egorova, O.B Parshikova), ‘Existence’ (A. Langle, K. Orgler, S.V. Krivtsova), author’s questionnaire, Deception scale. Results: 3/4 citizens of the Russian Federation fall within a normal range, but only 1/4 have no signs of internet addiction. Contrary to social prejudice and statistics from English-language studies, Internet addiction is least pronounced among 18-21-year-old Russian respondents (when they are virtually active). Normally young people are characterised by the needs for Career, Care, the ability to Manage/Control and Influence events/decisions, anticipate internet escapism when they lose their Meaning, Wisdom or Interest. The risk group includes 8.6 % males, and 23.6 % females. Internet addicts 2.3 % (coinciding with global statistics): twice as many women (different from global statistics). Girls under 14, teenagers, men aged 22-25 and women aged 30-35 are at risk and among those considered to be Internet addicts. Adults in this group develop existential indecisiveness, have unmet status-related claims (specifically Respect) and a strongly overestimated willingness to use coping strategies in reality instead of virtually. Internet addicts are most numerous in the Central Federal District (4.6 %), with the highest risk group in the Far East (37.8 %).
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Noble, David R., Qingguo Zhang, Akbar Shareef, Jeremiah Tootle, Andrew Meyers, and Tim Lieuwen. "Syngas Mixture Composition Effects Upon Flashback and Blowout." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90470.
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This paper reports experimental data on flashback and lean blowout characteristics of H2/CO/CH4 mixtures. Data were obtained over a range of fuel compositions at fixed approach or burned flow velocity, reactant temperature, and combustor pressure at several conditions up to 4.4 atm and 470 K inlet reactants temperature. Consistent with prior studies, these results indicate that the percentage of H2 in the fuel dominates the mixture blowout characteristics. These blowout characteristics can be captured with classical Damko¨hler number scalings to predict blowoff equivalence ratios to within 10%. Counter-intuitively, the percentage of hydrogen had far less effect on flashback characteristics, at least for fuels with hydrogen mole fractions less than 60%. This is due to the fact that two mechanisms of “flashback” were noted: rapid flashback into the premixer, presumably through the boundary layer, and movement of the static flame position upstream along the centerbody. The former and latter mechanisms were observed at high and low hydrogen concentrations. In the latter mechanism, flame temperature, not flame speed, appears to be the key parameter describing flashback tendencies. We suggest that this is due to an alteration of the vortex breakdown location by the adverse pressure gradient upstream of the flame, similar to the mechanism proposed by Sattelmayer and co-workers [1]. As such, a key conclusion here is that classical flashback scalings derived from, e.g., Bunsen flames, may not be relevant for many parameter regimes found in swirling flames.
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El-Genk, Mohamed S., and Amir F. Ali. "Saturation and Subcooled Boiling on Copper Nano-Dendrites Surfaces." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22108.
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Nucleate boiling of PF-5060 liquid on nano-dendrites surfaces is investigated at saturation and ΔTsub = 10, 20 and 30 K. The electrochemically deposited surfaces layers on 10 × 10 mm Cu substrates are ∼ 139, 171 and 220 μm thick. CHF and hMNB are significantly higher and occur at lower ΔTsat than has been reported on plane, macro-, micro- and nano-structured surfaces. CHF increases linearly 4.5%/K, while hMNB, occurring at end of the fully developed nucleate boiling region, decreases and corresponding ΔTsat increases with increased subcooling. For the 171 μm-thick surface: CHFsat of 27.8 W/cm2 increases to 63.25 W/cm2 at ΔTsub = 30 K, while saturation hMNB of 13.5 W/cm2.K decreases to 12.7 W/cm2.K at 30 K subcooling. ΔTsat at hMNB and CHF increases from 2.0 K and 2.16 K at saturation to 4.2 and 6.42 K at 30 K subcooling.
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Vial, Karine, and Dhananjay Kumar. "Shape Anisotropy Study of Nickel and Iron/Cobalt Nanoparticles." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12631.
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Shape anisotropy of Nickel and Iron/Cobalt nanoparticles embedded respectively in gold and Titanium/Nitride thin film matrix on a sapphire substrate has been study. The samples have been fabricated using a pulsed laser deposition. The measurements of magnetic moment per cm2 versus magnetic field at different temperatures (10 K and from 50 K to 300 K every 50 K) and with a magnetic field applied parallel to the sample or perpendicularly have been made in order to determine the coercivity of the material for these parameters. We also report our investigation on the magnetoresistance effect per cm2, where measurements have been lead for different temperatures (10 K, 100 K, 200 K, and 300 K) and two positions of the sample (parallel and perpendicular to the magnetic field). The comparison of the two cases, magnetic field parallel and magnetic field perpendicular to the sample, has shown that the difference of coercivity between them decreases when the temperature increases for all samples. For gold/nickel monolayer samples the difference varies from 120 Oe at 10 K to 6 Oe at 300 K for coercivities of about 200 Oe to 450 Oe at 10 K depending on the sample to coercivities of about 80 Oe to 150 Oe at 300K depending on the sample. For Titanium-Nitride/ Iron-Cobalt monolayer and trilayers samples the difference of coercivities varies between 10 Oe to 500 Oe depending on the temperature and the sample for coercivities between 30 Oe and 750 Oe. The difference in the percentage of magnetoresistance at 0 Oe is between 5 to 40% for Au/Ni sample and 0% to 10% for TiN/FeCo samples.
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Schooley, Ben, Akanksha Singh, Sarah Floyd, Stephan Pill, and John Brooks. "Direct Weighting Interactive Design of Patient Preferences for Shared Decision Making in Orthopaedic Practice." In 13th International Conference on Applied Human Factors and Ergonomics (AHFE 2022). AHFE International, 2022. http://dx.doi.org/10.54941/ahfe1002105.
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Patients need the ability to accurately and efficiently communicate their preferences across outcome domains to their healthcare providers.1-7 No existing system provides an efficient and timely approach to collect and communicate patient preferences across outcome domains to support shared decision making (SDM) in orthopaedic practice.2-4,8-19 The overarching goal of this research is to design, build, and test an app that collects baseline patient preferences and health status across orthopaedic outcomes and reports this information to the provider for use in patient care. A core component of the app is a Direct-Weighting (DW) preference assessment approach, originated from our prior research, and applied in a touchscreen based interactive design. It is envisioned that patients will use the app after scheduling a first visit to a surgeon for a new orthopaedic condition. Direct weighting (DW) approaches calculate patient-specific preference weights across outcomes by asking patients to disperse portions of a hypothetical “whole” across outcomes in a manner that reflects a patient’s preferences.20 DW has low respondent burden but it requires respondents to make “implicit” comparisons which may be difficult to conceptualize.20 However, the DW approach has become generally accepted in the quality-of-life literature and it has been shown that patients dividing up pieces of a “pie” across quality-of-life domains yields valid representations of patient preferences across the domains.20-22 However, the DW approach has not been validated with specific clinical scenarios using a clinically focused set of outcomes or by using a mobile software app. Drawing on prior research, we iteratively design and develop the app with input from prior DW research, informaticians, and clinicians. We use a qualitative approach to pilot test the app with 20 first-time visit patients presenting with joint pain and/or function deficiency. Participants were interviewed about their outcome preferences for care, used the app to prioritize outcome preferences, answered interview questions about their experience using the app, and completed a mHealth App Usability Questionnaire (MAUQ). Interview questions focused on the utility and usability of the mobile app for communicating with their provider, and capability of the app to capture their outcome preferences. Results validated five core preference domains, with most users dividing their 100-point allocation across 1-3 domains. The tool received moderate to high usability scores. Patients with older age and lower literacy found the DW approach more difficult in terms of allocating 100 points across 5 domains. Suggestions for DW interface interaction improvement included instantiation of a token/points oriented DW preference scoring methodology rather than a 1-10 sliding scale approach for improved preference weighting cognition and SDM with a provider. As more patient reported outcome (PRO) apps hit the marketplace across a broad spectrum of health conditions, these results provide evidence for a DW approach and interactive design for patients to communicate their treatment preferences to their providers.References:1.Baumhauer JF, Bozic KJ. Value-based Healthcare: Patient-reported Outcomes in Clinical Decision Making. Clin Orthop Relat Res. 2016;474(6):1375-1378.2. Slim K, Bazin JE. From informed consent to shared decision-making in surgery. J Visc Surg. 2019;156(3):181-184.3. Damman OC, Jani A, de Jong BA, et al. The use of PROMs and shared decision-making in medical encounters with patients: An opportunity to deliver value-based health care to patients. J Eval Clin Pract. 2020;26(2):524-540.4. Sorensen NL, Hammeken LH, Thomsen JL, Ehlers LH. Implementing patient-reported outcomes in clinical decision-making within knee and hip osteoarthritis: an explorative review. BMC Musculoskelet Disord. 2019;20(1):230.5. Kamal RN, Lindsay SE, Eppler SL. Patients Should Define Value in Health Care: A Conceptual Framework. J Hand Surg Am. 2018;43(11):1030-1034.6. Charles C, Gafni A, Whelan T. Decision-making in the physician-patient encounter: revisiting the shared treatment decision-making model. Social Science & Medicine. 1999;49(5):651-661.7. Niburski K, Guadagno E, Mohtashami S, Poenaru D. Shared decision making in surgery: A scoping review of the literature. Health Expect. 2020.8. Selten EM, Geenen R, van der Laan WH, et al. Hierarchical structure and importance of patients' reasons for treatment choices in knee and hip osteoarthritis: a concept mapping study. Rheumatology (Oxford). 2017;56(2):271-278.9. Kannan S, Seo J, Riggs KR, Geller G, Boss EF, Berger ZD. Surgeons' Views on Shared Decision-Making. J Patient Cent Res Rev. 2020;7(1):8-18.10. Briffa N. The employment of Patient-Reported Outcome Measures to communicate the likely benefits of surgery. Patient Relat Outcome Meas. 2018;9:263-266.
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Burheim, Odne S., Jon G. Pharoah, Hannah Lampert, Preben J. S. Vie, and Signe Kjelstrup. "Through-Plane Thermal Conductivity of PEMFC Porous Transport Layers." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33215.
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We report the through-plane thermal conductivities of the several widely used carbon porous transport layers (PTLs or GDLs) and their thermal contact resistance to an aluminium polarisation plate. We report these values both for wet and dry samples and at different compaction pressures. We show that depending on the type of PTL and possible residual water, the thermal conductivity of the materials varies from 0.15 to 1.6 W K−1 m−1 — one order of magnitude. This behaviour is the same for the contact resistance varying from 0.8 to 11 10−4 m2 K W−1. For dry PTLs the thermal conductivity decreases with increasing PTFE content and increases with residual water. These effects are explained by the behaviour of air, water and PTFE in between the PTL fibres.
Reports on the topic "10-K reports"
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Rahman, Mohammad, Ahmed Ibrahim, and Riyadh Hindi. Bridge Decks: Mitigation of Cracking and Increased Durability—Phase III. Illinois Center for Transportation, December 2020. http://dx.doi.org/10.36501/0197-9191/20-022.
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Early-age cracking in concrete decks significantly reduces the service life of bridges. This report discusses the application of various concrete mixtures that include potential early mitigation ingredients. Large-scale (7 ft × 10 ft) experimental bridge prototypes with similar restraint conditions found in actual bridges were poured with different concrete mixtures to investigate mitigation techniques. Portland cement (control), expansive Type K cement, internally cured lightweight aggregate (LWA), shrinkage-reducing admixture (SRA), and gypsum mineral were investigated as mitigating ingredients. Seven concrete mixtures were prepared by using individual ingredients as well as a combination of different ingredients. The idea behind combining different mitigating techniques was to accumulate the combined benefit from individual mitigating materials. The combined Type K cement and LWA mixture showed higher concrete expansion compared with mixtures containing Portland cement, Type K cement, LWA, and SRA in the large-scale experimental deck. Extra water provided by LWA significantly enhanced the performance of Type K cement’s initial expansion as well as caused larger total shrinkage over the drying period. A combination of Type K cement and gypsum mineral showed insignificantly higher expansion compared with the individual Type K mixture. Overall, the experimental deck containing SRA showed the least total shrinkage compared with other mixtures. Finite-element modeling was performed to evaluate and predict concrete stress-strain behavior due to shrinkage in typical bridges. A parametric study using finite-element analysis was conducted by altering the structure of the experimental deck. More restraint from internal reinforcement, less girder spacing, larger girder flange width, and more restrictive support conditions increased the concrete tensile stress and led to potential cracking in the concrete deck.
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Raymond, Kara, Laura Palacios, and Evan Gwilliam. Status of climate and water resources at Big Bend National Park: Water year 2019. Edited by Tani Hubbard. National Park Service, September 2022. http://dx.doi.org/10.36967/2294267.
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Climate and hydrology are major drivers of ecosystem structure and function, particularly in arid and semi-arid ecosystems. Understanding changes in climate, groundwater, streamflow, and water quality is central to assessing the condition of park resources. This report combines data collected on climate, groundwater, and springs at Big Bend National Park (NP) to provide an integrated look at climate and water conditions during water year (WY) 2019 (October 2018–September 2019). However, this report does not address the Rio Grande or its tributaries. Annual precipitation was higher than normal (1981–2010) for Big Bend NP at four of the five National Oceanic and Atmospheric Administration Cooperative Observer Program weather stations: 111% of normal for Chisos Basin, 122% of normal for Panther Junction, 155% of normal for Persimmon Gap, and 124% of normal for Rio Grande Village. Castolon had 88% of normal annual precipitation. All five stations had higher than normal rainfall in October and December, while rainfall totals were substantially below normal at all stations in November, February, and March. Monthly precipitation totals for April through September were more variable from station to station. Mean monthly maximum air temperatures were below normal in the fall months, with Panther Junction as much as 7.5°F below normal in October. Monthly temperatures from January through July were more variable. Temperatures in August and September were warmer than normal at every station, up to +9.4°F at Rio Grande Village and +8.7°F at Chisos Basin in July. The reconnaissance drought index values indicate generally wetter conditions (based on precipitation and evaporative demand) at Chisos Basin since WY2016 and at Panther Junction and Persimmon Gap since WY2015, except for WY2017. This report presents the manual and automatic groundwater monitoring results at nine wells. Five wells had their highest water level in or just before WY2019: Panther Junction #10 peaked at 99.94 ft below ground surface (bgs) in September 2018, Contractor’s Well peaked at 31.43 ft bgs in November 2018, T-3 peaked at 65.39 ft bgs in December 2018, K-Bar #6 Observation Well peaked at 77.78 ft bgs in February 2019, and K-Bar #7 Observation Well peaked at 43.18 ft bgs in February 2019. This was likely in response to above normal rainfall in the later summer and fall 2018. The other monitoring wells did not directly track within-season precipitation. The last measurement at Gallery Well in WY2019 was 18.60 ft bgs. Gallery Well is located 120 feet from the river and closely tracked the Rio Grande stage, generally increasing in late summer or early fall following higher flow events. Water levels in Gambusia Well were consistently very shallow, though the manual well measurement collected in April was 4.25 ft bgs—relatively high for the monitoring record—and occurred outside the normal peak period of later summer and early fall. The last manual measurement taken at TH-10 in WY2019 was 34.80 ft bgs, only 0.45 ft higher than the earliest measurement in 1967, consistent with the lack of directional change in groundwater at this location, and apparently decoupled from within-season precipitation patterns. The last water level reading in WY2019 at Oak Springs #1 was 59.91 ft bgs, indicating an overall decrease of 26.08 ft since the well was dug in 1989. The Southwest Network Collaboration (SWNC) collects data on sentinel springs annually in the late winter and early spring following the network springs monitoring protocol. In WY2019, 18 sentinel site springs were visited at Big Bend NP (February 21, 2019–March 09, 2019). Most springs had relatively few indications of natural and anthropogenic disturbances. Natural disturbances included recent flooding, drying, and wildlife use. Anthropogenic disturbances included flow modifications (e.g., springboxes), hiking trails, and contemporary human use. Crews observed one to seven facultative/obligate wetland plant...