3,941 results on '"Pentagon"'
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2. N‐Doped Nonalternant Nanoribbons with Excellent Nonlinear Optical Performance.
- Author
-
Song, Ying, Sun, Jibin, He, Xi, Liao, Miaoli, Zhao, Jie, Zeng, Weixuan, Zhou, Shuyun, and Chen, Huajie
- Subjects
- *
DOPING agents (Chemistry) , *NANORIBBONS , *CHEMICAL affinity , *ELECTRON affinity , *POLAR effects (Chemistry) - Abstract
Two novel N‐doped nonalternant nanoribbons (NNNR‐1 and NNNR‐2) featuring multiple fused N‐heterocycles and bulky solubilizing groups were prepared via bottom‐up solution synthesis. NNNR‐2 achieves a total molecular length of 33.8 Å, which represents the longest soluble N‐doped nonalternant nanoribbon reported to date. The pentagon subunits and doping of N atoms in NNNR‐1 and NNNR‐2 have successfully regulated their electronic properties, achieving high electron affinity and good chemical stability enabled by the nonalternant conjugation and electronic effects. When applied a laser pulse of 532 nm, the 13‐rings nanoribbon NNNR‐2 shows outstanding nonlinear optical (NLO) responses, with the nonlinear extinction coefficient of 374 cm GW−1, much higher than those of NNNR‐1 (96 cm GW−1) and the well‐known NLO material C60 (153 cm GW−1). Our findings indicate that the N‐doping of nonalternant nanoribbons is an effective strategy to access another type of excellent material system for high‐performance NLO applications, which can be extended to construct numerous heteroatom‐doped nonalternant nanoribbons with fine‐tunable electronic properties. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
3. Insights into Structural, Electronic, and Transport Properties of Pentagonal PdSe 2 Nanotubes Using First-Principles Calculations.
- Author
-
Tien, Nguyen Thanh, Thao, Pham Thi Bich, Dang, Nguyen Hai, Khanh, Nguyen Duy, and Dien, Vo Khuong
- Subjects
- *
NANOTUBES , *ELECTRONIC band structure , *ELECTROMECHANICAL devices , *ELECTRONIC equipment , *CARBON nanotubes , *DENSITY functional theory , *INDUCTIVE effect - Abstract
One-dimensional (1D) novel pentagonal materials have gained significant attention as a new class of materials with unique properties that could influence future technologies. In this report, we studied the structural, electronic, and transport properties of 1D pentagonal PdSe2 nanotubes (p-PdSe2 NTs). The stability and electronic properties of p-PdSe2 NTs with different tube sizes and under uniaxial strain were investigated using density functional theory (DFT). The studied structures showed an indirect-to-direct bandgap transition with slight variation in the bandgap as the tube diameter increased. Specifically, (5 × 5) p-PdSe2 NT, (6 × 6) p-PdSe2 NT, (7 × 7) p-PdSe2 NT, and (8 × 8) p-PdSe2 NT are indirect bandgap semiconductors, while (9 × 9) p-PdSe2 NT exhibits a direct bandgap. In addition, under low uniaxial strain, the surveyed structures were stable and maintained the pentagonal ring structure. The structures were fragmented under tensile strain of 24%, and compression of −18% for sample (5 × 5) and −20% for sample (9 × 9). The electronic band structure and bandgap were strongly affected by uniaxial strain. The evolution of the bandgap vs. the strain was linear. The bandgap of p-PdSe2 NT experienced an indirect–direct–indirect or a direct–indirect–direct transition when axial strain was applied. A deformability effect in the current modulation was observed when the bias voltage ranged from about 1.4 to 2.0 V or from −1.2 to −2.0 V. Calculation of the field effect I–V characteristic showed that the on/off ratio was large with bias potentials from 1.5 to 2.0 V. This ratio increased when the inside of the nanotube contained a dielectric. The results of this investigation provide a better understanding of p-PdSe2 NTs, and open up potential applications in next-generation electronic devices and electromechanical sensors. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
4. НОВА ФОРМУЛА ЗА ЛИЦЕ НА ЧЕТИРИЪГЪЛНИК (ЧЕТИВО ЗА VII КЛАС).
- Author
-
Табов, Йордан, Велчев, Асен, Стефанов, Станислав, and Хаимов, Хаим
- Subjects
- *
HEXAGONS , *PENTAGONS , *TRIANGLES , *ANGLES , *QUADRILATERALS - Abstract
Here we derive formula for the area of a quadrilateral with angle 45º between the diagonals, which is a special case of a more general formula for the area of a quadrilateral (Haimov 2022). Along the way we obtain formulas for the area of triangles with angle of 45º/135º. We also give formulas for the area of specific kinds of pentagons and hexagons, in the form of problems. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
5. Militarized Civic Ritual: Pentagon, Police, and US Professional Football
- Author
-
Schimmel, Kimberly S., Maguire, Joseph, editor, Liston, Katie, editor, and Falcous, Mark, editor
- Published
- 2021
- Full Text
- View/download PDF
6. Geometric and Aesthetic Concepts Based on Pentagonal Structures
- Author
-
Leopold, Cornelie, Sriraman, Bharath, Section editor, Lee, Kyeong-Hwa, Section editor, and Sriraman, Bharath, editor
- Published
- 2021
- Full Text
- View/download PDF
7. Cutting, Gluing, Squeezing, and Twisting: Visual Design of Real Algebraic Surfaces
- Author
-
Klaus, Stephan, Sriraman, Bharath, Section editor, Lee, Kyeong-Hwa, Section editor, and Sriraman, Bharath, editor
- Published
- 2021
- Full Text
- View/download PDF
8. Insights into Structural, Electronic, and Transport Properties of Pentagonal PdSe2 Nanotubes Using First-Principles Calculations
- Author
-
Nguyen Thanh Tien, Pham Thi Bich Thao, Nguyen Hai Dang, Nguyen Duy Khanh, and Vo Khuong Dien
- Subjects
nanotube ,pentagon ,palladium diselenide (PdSe2) ,structural properties ,electronic properties ,transport properties ,Chemistry ,QD1-999 - Abstract
One-dimensional (1D) novel pentagonal materials have gained significant attention as a new class of materials with unique properties that could influence future technologies. In this report, we studied the structural, electronic, and transport properties of 1D pentagonal PdSe2 nanotubes (p-PdSe2 NTs). The stability and electronic properties of p-PdSe2 NTs with different tube sizes and under uniaxial strain were investigated using density functional theory (DFT). The studied structures showed an indirect-to-direct bandgap transition with slight variation in the bandgap as the tube diameter increased. Specifically, (5 × 5) p-PdSe2 NT, (6 × 6) p-PdSe2 NT, (7 × 7) p-PdSe2 NT, and (8 × 8) p-PdSe2 NT are indirect bandgap semiconductors, while (9 × 9) p-PdSe2 NT exhibits a direct bandgap. In addition, under low uniaxial strain, the surveyed structures were stable and maintained the pentagonal ring structure. The structures were fragmented under tensile strain of 24%, and compression of −18% for sample (5 × 5) and −20% for sample (9 × 9). The electronic band structure and bandgap were strongly affected by uniaxial strain. The evolution of the bandgap vs. the strain was linear. The bandgap of p-PdSe2 NT experienced an indirect–direct–indirect or a direct–indirect–direct transition when axial strain was applied. A deformability effect in the current modulation was observed when the bias voltage ranged from about 1.4 to 2.0 V or from −1.2 to −2.0 V. Calculation of the field effect I–V characteristic showed that the on/off ratio was large with bias potentials from 1.5 to 2.0 V. This ratio increased when the inside of the nanotube contained a dielectric. The results of this investigation provide a better understanding of p-PdSe2 NTs, and open up potential applications in next-generation electronic devices and electromechanical sensors.
- Published
- 2023
- Full Text
- View/download PDF
9. Is There a Deep State?
- Author
-
Burchill, Scott and Burchill, Scott
- Published
- 2020
- Full Text
- View/download PDF
10. Ring Fusion Elevates the Electronic Mobility of Azabenzannulated Perylene Diimide.
- Author
-
Yang F, Wang C, Liang L, Wang Z, You X, Shao G, Wu D, and Xia J
- Abstract
The backwardness of n-type organic semiconductors still exists compared with the p-type counterparts. Thus, the development of high-performance n-type organic semiconductors is of great importance for organic electronic devices and their integrated circuits. In recent years, azabenzannulated perylene diimide (PDI), as one of immense bay-region-annulated PDI derivatives, has drawn considerable attentions. However, the electronic mobilities of azabenzannulated PDI derivatives are barely satisfactory. In this contribution, the peripheral benzene ring in azabenzannulated PDI 2 was fused to the ortho position by intermolecular C-H arylation cyclization. This endows the resultant azabenzannulated PDI 4 a planar configuration as well as electron deficient pentagonal ring. As a result, the electronic mobility of 4 is almost two orders of magnitude higher than that of the nonfused azabenzannulated PDI 2. This work shall pave a new avenue in elevating the performance of azabenzannulated PDI in organic electronics., (© 2024 Wiley‐VCH GmbH.)
- Published
- 2024
- Full Text
- View/download PDF
11. Myths of automation and their implications for military procurement.
- Author
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Hoffman, Robert R., Sarter, Nadine, Johnson, Matthew, and Hawley, John K.
- Subjects
- *
ARTIFICIAL intelligence , *TECHNOLOGICAL innovations , *HUMAN-machine relationship , *MACHINE learning , *HUMAN-computer interaction - Abstract
Several mythical beliefs surround military automation, including the belief that automation reduces manpower needs, that it requires less training for operators, and that it reduces errors. The unbridled enthusiasm for automation exhibited by some technologists -- and, consequently, by some technology acquisition programs -- extends to claims that computers will achieve and even surpass human-like reasoning capabilities. Such attitudes must be balanced by a recognition that automation's reality rarely matches its promise. When automation is introduced, human operators must assume the additional tasks of monitoring and coordinating with the technology. When automation "takes over," human operators -- instead of having fewer things to do -- have new things to do. Automation requires that operators be trained to high proficiency. Even the most well-intentioned systems trigger new problems, different kinds of problems, and unanticipated problems. Procurement processes for automated military technology could be improved by awareness of, and efforts to escape from, the mythical beliefs that surround military automation. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
12. Pentagons and Pentagrams : An Illustrated History
- Author
-
Eli Maor, Eugen Jost, Eli Maor, and Eugen Jost
- Subjects
- Mathematics--History, Pentacles, Pentagon
- Abstract
A fascinating exploration of the pentagon and its role in various culturesThe pentagon and its close cousin, the pentagram, have inspired individuals for the last two and half millennia, from mathematicians and philosophers to artists and naturalists. Despite the pentagon's wide-ranging history, no single book has explored the important role of this shape in various cultures, until now. Richly illustrated, Pentagons and Pentagrams offers a sweeping view of the five-sided polygon, revealing its intriguing geometric properties and its essential influence on a variety of fields.Traversing time, Eli Maor narrates vivid stories, both celebrated and unknown, about the pentagon and pentagram. He discusses the early Pythagoreans, who ascribed to the pentagon mythical attributes, adopted it as their emblem, and figured out its construction with a straightedge and compass. Maor looks at how a San Diego housewife uncovered four previously unknown types of pentagonal tilings, and how in 1982 a scientist's discovery of fivefold symmetries in certain alloys caused an uproar in crystallography and led to a Nobel Prize. Maor also discusses the pentagon's impact on many buildings, from medieval fortresses to the Pentagon in Washington, D.C. Eugen Jost's superb illustrations provide sumptuous visual context, and the book's puzzles and mazes offer fun challenges for readers, with solutions given in an appendix.
- Published
- 2022
13. An Effective Approach Based on a Subset of Skeleton Joints for Two-Person Interaction Recognition
- Author
-
Ammar, Sirine, Zaghden, Nizar, Neji, Mahmoud, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Vera-Rodriguez, Ruben, editor, Fierrez, Julian, editor, and Morales, Aythami, editor
- Published
- 2019
- Full Text
- View/download PDF
14. Pentagon Inside the Circle of Willis and the Golden Ratio.
- Author
-
Mahakul, Dibya Jyoti and Agarwal, Jaya
- Subjects
- *
GOLDEN ratio , *CIRCLE of Willis , *ARCHITECTURAL designs , *ARCHITECTURAL design - Abstract
The Golden ratio ("phi" or "Ф") has been known to us for ages and its use in art and architectural designs has enhanced its exquisiteness. Even some of the astounding creations of nature do follow this principle of Golden or divine proportions. Three centuries ago the circle of Willis at the base of the brain was first described and illustrated by Thomas Willis. Classically it was described as being circular in shape, however, the gross anatomy reveals a slightly different picture. The components of this complex neurovascular structure are so arranged that it appears more like a pentagon than a circle. A regular pentagon, unlike a circle, is a Golden shape that mathematically obeys the laws of Golden proportions. Like most other marvelous structures in nature, the close resemblance of the circle of Willis to a pentagon is more of a conscious effort of nature to establish consonance with aesthetic perception, rather than just a mere coincidence. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
15. Unveiling bonding states and roles of edges in nitrogen-doped graphene nanoribbon by X-ray photoelectron spectroscopy.
- Author
-
Yamada, Yasuhiro, Tanaka, Haruki, Kubo, Shingo, and Sato, Satoshi
- Subjects
- *
X-ray photoelectron spectroscopy , *NITROGEN , *GRAPHENE , *CONJUGATED systems , *EDGES (Geometry) - Abstract
X-ray photoelectron spectroscopy (XPS) is among the most utilized analytical methods for nitrogen-doped carbon materials. Clarifying the assignments of nitrogen-doped carbon materials with different degrees of carbonization, which relates to conjugated systems, is essential to correlate structures with the performance of various applications, but such precise assignments were challenging. In this work, precise analyses were conducted to overcome the difficulty to assign the peaks of carbon materials with different degrees of carbonization, different edges, and various nitrogen-containing functional groups in graphene nanoribbons (GNRs), such as nitrile, pyridinic, primary with/without charges, secondary with/without charge, tertiary without charges (graphitic nitrogen), and quaternary nitrogen. Electrons donated from hydrogen and Madelung potentials showed a higher correlation to the peak shift of C1s and N1s XPS spectra than Mulliken charges on nitrogen. Zigzag edges showed a greater influence on the peak shift of tertiary amine (graphitic nitrogen) than armchair edges on XPS spectra. Besides, as the degree of carbonization is increased from aromatic compound-like structures to GNRs, the peak positions of C–N in C1s and N1s XPS spectra shifted to higher binding energies. This research proved that XPS could be applied to the precise structural analyses of nitrogen-containing carbon materials. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
16. A spectral condition for the existence of a pentagon in non-bipartite graphs.
- Author
-
Guo, Hangtian, Lin, Huiqiu, and Zhao, Yanhua
- Subjects
- *
BIPARTITE graphs - Abstract
A graph G is F -free, if it contains no F as a subgraph. A Brualdi-Solheid-Turán type problem asks what is the maximum spectral radius of an F -free graph of order n ? Let K a , b • K 3 denote the graph obtained by identifying a vertex of K a , b belonging to the part of size b and a vertex of K 3. In this paper, we consider about a Brualdi-Solheid-Turán type problem on non-bipartite graphs. We prove that if G is a non-bipartite graph with order n ≥ 21 and ρ (G) ≥ ρ (K ⌈ n − 2 2 ⌉ , ⌊ n − 2 2 ⌋ • K 3) , then G contains a pentagon unless G ≅ K ⌈ n − 2 2 ⌉ , ⌊ n − 2 2 ⌋ • K 3. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
17. Chromophobia in the 'Smart' City.
- Subjects
ARCHITECTURAL history ,ENLIGHTENMENT ,ARTIFICIAL intelligence ,COLD War, 1945-1991 - Abstract
What is it with architects and their obsession with white, clean and neat architecture? The world is, after all, colourful and messy. Carolyn L Kane runs us through some of her recent research and analysis on light, colour, contemporary real and virtual urban aesthetics and their joyful animation, while exposing a problematic architectural history that has persisted for over a century. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
18. Counting Non-Convex 5-Holes in a Planar Point Set
- Author
-
Young-Hun Sung and Sang Won Bae
- Subjects
Erdős–Szekeres problem ,counting algorithm ,polygon ,pentagon ,discrete geometry ,computational geometry ,Mathematics ,QA1-939 - Abstract
Let S be a set of n points in the general position, that is, no three points in S are collinear. A simple k-gon with all corners in S such that its interior avoids any point of S is called a k-hole. In this paper, we present the first algorithm that counts the number of non-convex 5-holes in S. To our best knowledge, prior to this work there was no known algorithm in the literature except a trivial brute force algorithm. Our algorithm runs in time O(T+Q), where T denotes the number of 3-holes, or empty triangles, in S and Q that denotes the number of non-convex 4-holes in S. Note that T+Q ranges from Ω(n2) to O(n3), while its expected number is Θ(n2logn) when the points in S are chosen uniformly and independently at random from a convex and bounded body in the plane.
- Published
- 2022
- Full Text
- View/download PDF
19. THE NEW ECONOMIC WARFARE
- Author
-
Sebastian SÂRBU
- Subjects
trade war ,steel ,oil ,aluminium ,national security ,China ,Iran ,European Union ,Pentagon ,Department of Defense ,North Stream II Project ,U.S. Census Bureau ,U.S trade deficit ,Bureau of Economic Analysis ,NATO ,Intermarium ,Military Science - Abstract
In this paper, a conceptual analysis is developed about the trade wars, the new economic war and the risk of escalation with the consequence of a military global war. The trade wars are viewed in the context of geopolitics movements and security interest with the analysis of opportunities.
- Published
- 2018
20. The Harmful Effects of Wasteful Spending.
- Author
-
Friedman, Hershey H., Fischer, Dov, and Schochet, Sholom
- Subjects
EXECUTIVE compensation ,FRAUD ,MUNICIPAL government ,HIGHER education ,AUDITORS - Abstract
This paper examines the significant problems that result from wasteful spending, which include fiscal irresponsibility, deferred maintenance, and excessive executive compensation. Waste in areas such as health care, defense, higher education, and municipal government are studied. The authors conclude that executives and auditors should be as concerned with wasteful spending as fraud because the former can be as devastating to an organization as the latter. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
21. Frequency Reconfigurable Pentagon Patch Antenna Using PIN Diode for Wireless Applications.
- Author
-
Ferouani, Souheyla and Moulessehoul, Wassila
- Subjects
PIN diodes ,WIRELESS communications ,ANTENNAS (Electronics) - Abstract
A new design of a frequency reconfigurable pentagon patch antenna for wireless communications is presented in this paper. Four PIN diodes, BAR63-02V, have been used on the ground plane to achieve the desired reconfigurability. The proposed patch antenna having dimensions of 26mm x 15mm has been designed using CST Microwave. The antenna is alimented by coaxial-probe and Rogers 3003 has been used as a substrate. Center frequencies are 2.44 and 4.52 GHz in operating Mode M1, 2.83 and 7.11 GHz in operating Mode M2, 2.68 and 4.66 GHz in operating Mode M3, 3.24 and 6.19 for operating Mode M4, 3.32, 6.32 and 6.62 GHz for operating Mode M5. [ABSTRACT FROM AUTHOR]
- Published
- 2021
22. Ukraine Might Be Getting $34 Billion In American Weapons—And Soon.
- Author
-
Axe, David
- Subjects
WEAPONS ,ARTILLERY - Abstract
Assuming Speaker of the House Mike Johnson honors his word, a lot of money and a lot of badly-needed weapons are about to arrive at the front line in Ukraine. [ABSTRACT FROM AUTHOR]
- Published
- 2024
23. This Startup Wants To 3D-Print Military Drones On The Front Lines Of Ukraine.
- Author
-
Brewster, Thomas
- Subjects
SHIPPING containers ,MARITIME contracts ,NEW business enterprises ,CONTAINER ships ,THREE-dimensional printing - Abstract
The startup has raised $12 million from the likes of Lockheed Martin and scored Pentagon contracts to develop a shipping container size drone factory. [ABSTRACT FROM AUTHOR]
- Published
- 2024
24. The Home Front: Norman Mailer's The Armies of the Night.
- Author
-
Moreira da Rocha, Luiz Carlos
- Subjects
- *
ARMIES , *WAR - Abstract
This paper aims to analyze the novel The Armies of the Night, by Norman Mailer, as a record of a march on the Pentagon held on October 1967 in a great protest against the Vietnam War. But, before approaching the novel itself, it is important to present some social and historical data in order to contextualize Mailer's narrative within the historical frame. It is relevant to stress that some facts quoted in the beginning of this paper are cited in the novel. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
25. Unlocking the Secrets of PTSD.
- Author
-
Thompson, Mark
- Subjects
- *
POST-traumatic stress disorder , *BRAIN research , *PSYCHOLOGY of military personnel , *PSYCHOLOGICAL stress , *FAMILIES of military personnel , *EMOTIONAL trauma - Abstract
The article discusses neuropathologist Dr. Ann McKee and her work in trying to unlock the secrets of post-traumatic stress disorder (PTSD). According to the article, as many as 500,000 U.S. military members who served in the nation's wars in Afghanistan and Iraq have been diagnosed with PTSD. The impacts that untreated PTSD can have on the families of military personnel are mentioned. Brain research and emotional responses to stress and trauma are examined, along with brain cell interactions.
- Published
- 2015
26. КОНФИГУРАЦИИ ОТ ПЕДАЛНИ ОКРЪЖНОСТИ НА ПРОИЗВОЛНА ТОЧКА В РАВНИНАТА НА МНОГОЪГЪЛНИК
- Author
-
Ненков, Веселин, Стефанов, Станислав, and Хаимов, Хаим
- Subjects
- *
TRIANGLES , *CIRCLE , *QUADRILATERALS - Abstract
In this paper it is described the mutual location of the pedal circles of an arbitrary point in the plane of an arbitrary quadrilateral and pentagon with respect to the triangles determined by their sides and diagonals. As a result it is defined Simson circle of a point in the plane of an arbitrary pentagon. Simson lines are found for points on determined lines in the plane of the pentagon. [ABSTRACT FROM AUTHOR]
- Published
- 2020
27. The complete characterization of tangram pentagons.
- Author
-
Pohl, Sarah Sophie and Richter, Christian
- Abstract
The old Chinese puzzle tangram gives rise to serious mathematical problems when one asks for all tangram figures that satisfy particular geometric properties. All 13 convex tangram figures are known since 1942. They include the only triangular and all six quadrangular tangram figures. The families of all n-gonal tangram figures with n ≥ 6 are either infinite or empty. Here we characterize all 53 pentagonal tangram figures, including 51 non-convex pentagons and 31 pentagons whose vertices are not contained in the same orthogonal lattice. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
28. 'A relationship of mutual exploitation': the evolving ties between the Pentagon, Hollywood, and the commercial gaming sector.
- Author
-
Kaempf, Sebastian
- Subjects
- *
COMPUTER war games , *WAR films , *DIGITAL technology ,UNITED States armed forces - Abstract
This article examines the close historical and contemporary ties between the Pentagon and Hollywood from the 1920s until today. Drawing on the US military as an in-depth case study, the article shows the extent to which key military actors view the conduct of war as an arena that stretches well beyond the actual battlefields and includes the production of war movies, film documentaries, computer simulations and first person shooter video games. The article begins with an examination of the 'Military-Industrial Complex' and its evolution into what experts have dubbed 'The Military-Industrial-Media-Entertainment Network (MIME-Net).' It then focuses on the military's relationship with the filming industry, with the production of reality TV, and the commercial gaming industry. It thereby investigates, through in-depth interviews with key stakeholders, how this phenomenon has evolved over time and into new areas where games, simulators, and game technologies cross the boundaries between militaries, the defense industry, Hollywood and the commercial gaming sector. And it shows how the advent of digital new technologies have opened new platforms through which militaries seek to boost recruitment, to (re)write military history, and to influence the portrayal of the armed forces in the eyes of the public. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
29. Two Person Interaction Detection Using Kinect Sensor
- Author
-
Saha, Sriparna, Konar, Amit, Janarthanan, Ramadoss, Chakraborty, Mihir K., editor, Skowron, Andrzej, editor, Maiti, Manoranjan, editor, and Kar, Samarjit, editor
- Published
- 2015
- Full Text
- View/download PDF
30. How Rebellion Defense, The $1 Billion Military AI Startup Hyped By Silicon Valley, Wound Up In A Nosedive.
- Author
-
Jeans, David
- Subjects
ARTIFICIAL intelligence ,NEW business enterprises ,PUBLIC contracts - Abstract
Launched with funding from former Google CEO Eric Schmidt, Rebellion Defense promised to deliver cutting-edge AI for the U.S.-U.K. alliance. But after losing its founders and shuttering its British arm, the company's U.S. operation is trying to survive. [ABSTRACT FROM AUTHOR]
- Published
- 2023
31. Pentagon Defends Osprey Aircraft After Fatal Crash—As Japan Pushes For Flight Pause.
- Author
-
Nguyen, Britney
- Subjects
OSPREY - Abstract
Japan's Chief Cabinet Secretary Hirokazu Matsuno said the continued flying of the Ospreys over Japan is "deeply regrettable." [ABSTRACT FROM AUTHOR]
- Published
- 2023
32. Pentagon Fraud Analysis in Detecting Fraudulent Financial Reporting Using the Fraud Score Model
- Author
-
Fita Rani Aulia, Roza Mulyadi, and Mega Arum
- Subjects
Pentagon ,business.industry ,Accounting ,Business - Abstract
This study was conducted to determine the effect of pentagon fraud (pressure, opportunity, rationalization, capability and arrogance) in detecting fraudulent financial reporting using F-Score in financial companies listed on the Indonesia Stock Exchange in 2017-2019. Using associative quantitative research methods. The population of this study are 100 companies with 49 sample of companies for 3 periods, so the sample total is 147 samples was obtained which was taken by purposive sampling technique. The testing method of this research is through multiple regression analysis with the SPSS 22 program. The results of the partial test analysis show that pressure and opportunity has significant effect in detecting fraudulent financial reporting. Whereas rationalization, capability and the arrogance variable has insignificant effect in detecting fraudulent financial reporting. The test results simultaneously are pressure, opportunity, rationalization, capability and arrogance has significant effect in detecting fraudulent financial reporting.
- Published
- 2021
33. Pentagon fraud perspective analysis in detecting indications of financial statement fraud
- Author
-
Ni Putu Winda Ayuningtyas, I Putu Sudana, I Wayan Suartana, and Ni Putu Sri Harta Mimba
- Subjects
Pentagon ,Political science ,Perspective (graphical) ,Financial statement ,Law and economics - Abstract
This study aims to obtain empirical evidence regarding the elements of fraud pentagon theory on indications of financial statement fraud. This research was conducted on banking companies listed on the Indonesia Stock Exchange (IDX) for the 2017-2020 period. The method of determining the sample used is non-probability sampling with purposive sampling technique. The number of samples that meet the sample selection criteria are 140 samples, namely 35 banking companies during the four years of observation 2017-2020. The data analysis technique used is multiple linear regression. Based on the results of the analysis, it is stated that the nature of industry and change of directors have a negative effect on indications of financial statement fraud, while personal financial need, rationalization, and CEO duality have no effect on indications of financial statement fraud. This study has implications for investors, creditors, the government and other parties who need financial statement information to consider the elements of the fraud pentagon theory to detect indications of fraudulent financial statements in banking companies.
- Published
- 2021
34. Whistleblowing by accountants: an integration of the fraud pentagon and the extended theory of planned behavior
- Author
-
Fahime Ebrahimi and Mehdi Sarikhani
- Subjects
Pentagon ,business.industry ,Accounting ,Economics, Econometrics and Finance (miscellaneous) ,Theory of planned behavior ,Psychology ,business - Abstract
Purpose The purpose of this study is to investigate the factors affecting the whistleblowing intentions (WBI) by Iranian accountants by integrating the fraud pentagon and the extended theory of planned behavior. Design/methodology/approach The population was made up of accountants from all of the 400 companies listed in the Tehran Stock Exchange and the authors used a quantitative survey-based method. Out of a total of 300 questionnaires administered, 171 valid responses were used for analysis. This research used the partial least squares structural equation modeling analysis using SmartPLS 3.3.3 to examine the proposed hypotheses and to analyze the research model. Findings The results indicated that the extended theory of planned behavior components (perceived behavioral control, perceived subjective norms (PSN), perceived moral obligation and attitudes toward whistleblowing) have positive effects on accountants’ internal WBI. The results of investigating the moderating effect of perceived moral intensity (PMI) on the relationship between components of the extended theory of planned behavior and WBI show that PMI moderates the effect of PSN on WBI. Originality/value This study develops the whistleblowing literature by bringing together the components of the fraud pentagon and the extended theory of planned behavior and providing an integrated model. This model, which incorporates many variables from previous research, seeks to provide a comprehensive model for whistleblowing with the expansion of the Brown et al. (2016) model.
- Published
- 2021
35. MODERATING OF POLLITICAL CONNECTION ON FACTORS AFFECTING FRAUDULENT FINANCIAL STATEMENT FROM THE PENTAGON FRAUD MODEL PERSPECTIVE
- Author
-
Helmiansyah Irawan and Titik Aryati
- Subjects
Pentagon ,Environmental Engineering ,Perspective (graphical) ,Business ,Financial statement ,Law and economics ,Connection (mathematics) - Abstract
The Purpose of this research is to analyze the effect of the factors that effect of fraud in financial statements that occur in companies. And also analyzes the impact of political connections as a moderating variable that strengthens or weakens the factors that influences fraud in the financial statements.The author collects empirical study data from manufacture industry companies, using secondary data taken from annual reporting of companies listed in the Indonesia Stock Exchange and analyzes them using the SPSS program. A total of 60 units of data analysis that meet the criteria and can be used as sample in the research. This research reveals that effective monitoring and change of director has a positive and significant effect on financial statement of fraudulent. A set of financial targets, changes of auditors, and the frequencies of CEO pictures have not effect on fraudulent of financial statement. Whatever, the impact on political connection as oderating variable only strengthens the influence between effective monitoring and change of BOD on fraudulent financial statement from before being moderated by the political connection. This study only takes data of secondary from the annual reporting of companies and financial reports of firm from BEI, especially the manufacturing industry which only covers three sectors. Meanwhile, the Indonesia Stock Exchange consists of nine existing industrial sectors. Originality/value for this research is Political Connection as a moderator between financial stability, in effectively monitoring, change of auditor, change of director and frequencies of number commissioner’s pictures on financial statement of fraudulent in the context of manufacture companies listed in BEI is still little researched. So this research will not only fill in the current gaps in the literature but also spark new academic debates, but this study will also contribute to the practice of fraudulent financial. Keywords: financial stability, ineffectively monitoring, changes of auditor, changes of director, financial statement of fraudulent
- Published
- 2021
36. Fraud Pentagon and Fraudulent Financial Reporting: Evidence from Manufacturing Companies in Indonesia and Malaysia
- Author
-
Gupita Anggarani and Erni Suryandari Fathmaningrum
- Subjects
Finance ,education.field_of_study ,Financial stability ,business.industry ,media_common.quotation_subject ,HF5601-5689 ,Population ,Audit ,External auditor ,Pentagon ,pentagon fraud ,Accounting. Bookkeeping ,Stock exchange ,Originality ,fraudulent financial reporting ,Quality (business) ,Business ,education ,media_common - Abstract
Research aims: This study aims to examine the influence of fraud pentagon concept on fraudulent financial reporting.Design/Methodology/Approach: This study’s population was manufacturingcompanies listed in Indonesia Stock Exchange and Malaysia Stock Exchange. 120 manufacturing companies in Indonesia and 118 manufacturing companies in Malaysia were involved as samples. The data analysis method used in this study is multiple linear regression.Research findings: The results showed that financial target, financial stability, quality of external auditor, external pressure, and nature of industry variables influenced fraudulent financial reporting. In contrast, personal financial need, ineffective monitoring, change in auditor, change in director, and frequent number of CEO’s pictures variables had no effect on fraudulent financial reporting. For Indonesia, it was found that financial target, financial stability, and the quality of external auditor influenced fraudulent financial reporting. While, in Malaysia, the results showed that financial stability, external pressure, and nature of industry variables influenced fraudulent financial reporting in Malaysia.Theoretical contribution/Originality: These results support the financial target and quality of external auditor hypothesis in Indonesia, financial stability hypothesis in Indonesia and Malaysia, external pressure and nature of industry hypotheses in Malaysia, stating that fraud pentagon factors affect fraudulent financial reporting. It is also proved that there are different levels of fraudulent financial reporting in Indonesia and Malaysia. Indonesia has fraudulent financial reporting cases higher than Malaysia.
- Published
- 2021
37. Building for the American Age: The Pentagon
- Author
-
T.R. Witcher
- Subjects
Pentagon ,Political science ,Economic history ,General Medicine - Published
- 2021
38. Tilings of the sphere by congruent pentagons I: Edge combinations a2b2c and a3bc
- Abstract
We develop the basic tools for classifying edge-to-edge tilings of the sphere by congruent pentagons. Then we prove that, for the edge combination a2b2c, such tilings are three two-parameter families of pentagonal subdivisions of the Platonic solids, with 12, 24 and 60 tiles. We also prove that, for the edge combination a3bc, such tilings are two unique double pentagonal subdivisions of the Platonic solids, with 48 and 120 tiles.
- Published
- 2022
39. Tilings of the sphere by congruent pentagons III: Edge combination a5
- Abstract
There are exactly eight edge-to-edge tilings of the sphere by congruent equilateral pentagons: three pentagonal subdivision tilings with 12, 24, 60 tiles; four earth map tilings with 16, 20, 24, 24 tiles; and one flip modification of the earth map tiling with 20 tiles. © 2021 Elsevier Inc.
- Published
- 2022
40. Tilings of the sphere by congruent pentagons II: Edge combination a3b2
- Abstract
There are fifteen edge-to-edge tilings of the sphere by congruent pentagons with the edge combination a3b2: five one-parameter families of pentagonal subdivision tilings, and ten flip modifications of three special cases of two pentagonal subdivision tilings. © 2021 Elsevier Inc.
- Published
- 2022
41. A Study on IFM/IFG/1 Vacation Queueing System with Breakdown, Repair and Server Timeout in (Triangular, Trapezoidal & Pentagon) Intuitionistic Fuzzy Set using α-Cuts
- Author
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Y. Saritha
- Subjects
Set (abstract data type) ,Pentagon ,Computer science ,Intuitionistic fuzzy ,Queueing system ,Timeout ,Topology - Abstract
In this, we studied and investigated IFM/IFG/1 vacation queueing system/waiting line with server breakdowns, repair and server timeout, “by using (Triangular Trapezoidal and Pentagonal) IF (Intuitionistic Fuzzy) numbers with the application of IFS (Intuitionistic fuzzy set). Here we operate single server vacation queueing system in the following manner; when the system finds empty, the server waits for fixed time ’c’ known as server timeout. At the expiration of this time, if no one arrives into the system, then server takes the vacation. If anyone arrived in the system during the timeout period as well as in vacation the server commences the service otherwise, he will go for another vacation. If the system had occurred with a breakdown, just after a break down the server undergoes for repair. After the repaired process is completed the server restarts the service to the arrived customer. By the approach of IFS properties, we develop the membership function of the system performance are of fuzzy nature. Based on IFS α-cut approach the Intuitionistic fuzzy queues are reduced to a family of ICS (Intuitionistic Crisp Set). The numerical results are illustrated to the model.
- Published
- 2021
42. APPLICATION FRAUD PENTAGON FOR DETECTING SYMPTOMS OF SHORTFUL FINANCIAL STATEMENTS
- Author
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Driya Sudaryono
- Subjects
Nonprobability sampling ,Finance ,Pentagon ,Environmental Engineering ,Earnings management ,Financial stability ,business.industry ,Stock exchange ,Sampling (statistics) ,Sample (statistics) ,Business ,Rationalization (economics) - Abstract
The purpose of this study is to determine the effect of fraud pentagon toward fraudulent financial reporting sympton using modified Jones model to the mining companies. The method of sampling used purposive sampling method. The sample consists of 30 companies was listed on the Indonesia Stock Exchange in 2013-2016. The result of this research concluded that pressure which proxied by financial target and financial stability has a positive and significant effect on fraudulent financial reporting. Opportunity has a negative and significant effect on fraudulent financial reporting. Rationalization, capability, and arrogance has not significant effect on fraudulent financial reporting.
- Published
- 2021
43. Mark Bingham
- Author
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J. B. Mayo
- Subjects
Pentagon ,History ,Dismissal ,Transgender ,Media studies ,Queer ,HERO ,Mainstream ,Making-of ,Social studies - Abstract
In this article, the author recounts some of the events that occurred on September 11, 2001, when four doomed airlines crashed after being hijacked by 19 Al-Qaeda terrorists, resulting in the deaths of 2,977 people in New York, New York, at the Pentagon in Arlington, Virginia, and on an empty field in Shanksville, Pennsylvania. It is at this latter location, where United Flight 93 crashed killing everyone onboard, including 31-year-old Mark Bingham, an openly gay businessman and member of a small group of people who, it is believed, wrested control from the hijackers and brought the plane down. In the years post-September 11, Bingham has become known as a modern-day hero by the various queer communities, while also garnering a high level of notoriety among many mainstream people as well. The author maintains, however, that Bingham’s hero status simultaneously contributes to the dismissal and erasure of countless other queer people, primarily Black, Brown, and transgender, who have also performed heroic acts throughout modern U.S. history. Without diminishing the actions Bingham and the others took on board United Flight 93, the author questions why this particular gay man is remembered, while countless other queer/trans people of color remain largely unknown.
- Published
- 2021
44. The Effect of Fraud Pentagon and F-Score Model in Detecting Fraudulent Financial Reporting in Indonesia
- Author
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Agung Dinarjito and Ardhi Nugraha Putra
- Subjects
Pentagon ,Accounting. Bookkeeping ,Actuarial science ,HF5001-6182 ,HF5601-5689 ,Business ,F1 score ,health care economics and organizations ,humanities - Abstract
This study analyzes the effect of fraud pentagon and the efficacy of the F-score model in detecting fraudulent financial reporting in Indonesia. The sample used is the company’s annual report subject to Financial Service Authority (OJK) sanctions and a twofold comparative annual study from companies not subject to sanctions in the same reporting year and industry type. The sample was selected using a purposive sampling method. The data was analyzed using the logistic regression analysis. The test results prove that pressure, opportunity, and rationalization in the fraud pentagon can be used to detect bogus financial reporting. The results reveal that the F-score model is unsuitable for hypothesis testing; consequently, some variables should be eliminated. Therefore, the F-score model has limited usefulness in detecting counterfeit financial reporting in Indonesia. Keywords: F-Score, accounting fraud, fraud detection, fraud pentagon, fraudulent financial reporting
- Published
- 2021
45. HOW TO SAVE A TRILLION DOLLARS.
- Author
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Thompson, Mark
- Subjects
- *
MILITARY spending , *BUDGET cuts , *MILITARY budgets , *DEFENSE industry laws , *MILITARY policy , *EARMARKING (Public finance) - Abstract
The article discusses how the U.S. government can save a trillion dollars by cutting defense spending, such as reducing the size of the U.S. aircraft carrier, using more unmanned aircraft, and shrinking the number of missiles in the U.S. missile defense system. Topics include an overview of the amount of money the U.S. government allocates to defense spending, the controversy of cutting defense spending while the U.S. is at war in Afghanistan, Iraq, and Libya, and the impact on U.S. military capability as a result of cuts in defense spending. Also discussed is the economic impact of earmarking in the U.S. Congress for the construction of military ships and aircraft in states with a military interests, such as Virginia and Florida.
- Published
- 2011
46. The case for decolonizing the Chagos islands: A response to Bashfield
- Author
-
Peter Harris
- Subjects
Pentagon ,Indian ocean ,Military Base ,Geography ,geography.geographical_feature_category ,Archipelago ,Management, Monitoring, Policy and Law ,Oceanography ,Base (topology) ,Diego Garcia ,Archaeology ,Water Science and Technology - Abstract
The US military base on the British-controlled island of Diego Garcia in the Chagos Archipelago is a lynchpin of the USA’s Indo-Pacific Strategy. As the Pentagon’s only base in the Indian Ocean pro...
- Published
- 2021
47. Discovery of Non-Isolated-Pentagon-Rule Fullerenes from Computational Characterization of U2O@C72
- Author
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Xiaojiao Gu, Le Yang, Peng Jin, Kai Niu, and Bo Li
- Subjects
Fullerene ,010405 organic chemistry ,Chemistry ,Atom (order theory) ,Electronic structure ,010402 general chemistry ,01 natural sciences ,0104 chemical sciences ,Inorganic Chemistry ,Pentagon ,Atomic orbital ,Chemical physics ,Covalent bond ,Endohedral fullerene ,Density functional theory ,Physical and Theoretical Chemistry - Abstract
The reported actinide-based endohedral clusterfullerenes (ECFs) are rather scarce thus far. Though several members have been detected in mass spectra, their exact structures and properties mostly remain unclear. Herein, density functional theory calculations revealed that the U2O@C72 observed in recent experiments should be U2O@D2(10611)-C72, U2O@C1(10610)-C72, or U2O@Cs(10616)-C72. Featuring two pairs of fused pentagons, their outer cages all break the well-known isolated pentagon rule. U2O@D2(10611)-C72 is the first clusterfullerene based on the D2(10611)-C72 cage, which only encapsulated dimetals (Sc2, La2, Ce2, Pr2) before. It is also the first time to reveal that C1(10610)-C72 and Cs(10616)-C72 can serve as the parent cage of an endohedral fullerene. Interestingly, the three isomers could interconvert with each other via Stone-Wales transformation with one internal U atom dynamically changing its orientation according to the position of pentagon adjacencies. A common electronic structure of (U4+)2(O)2-@C726- can be formally assigned to the three ECFs but with obvious covalent character for both U-O and U-C bonds. Their spatially extended U-5f orbitals substantially enhance the metal-cage interactions. Their various spectra were also simulated to assist future experiments. Moreover, our work shows that the careful choice of exchange-correlation functionals is rather critical for the structural characterization of ECFs.
- Published
- 2021
48. Tolerating Soft Errors with Horizontal-Vertical-Diagonal-N-Queen (HVDNQ) Parity
- Author
-
Muhammad Sheikh Sadi, Mouly Dewan, Sumaiya Sumaiya, and Atikur Rahman
- Subjects
Discrete mathematics ,020208 electrical & electronic engineering ,Diagonal ,Data_CODINGANDINFORMATIONTHEORY ,02 engineering and technology ,Equilateral triangle ,020202 computer hardware & architecture ,Queen (playing card) ,Pentagon ,TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,Error detection and correction ,Parity (mathematics) ,Mathematics - Abstract
A new error detection and correction methodology, defined as Horizontal-Vertical-Diagonal-N-Queen-Parity (HVDNQ), is proposed in this paper. This approach relies on five different types of parities: horizontal parity, vertical parity, forward diagonal parity, backward diagonal parity, and queen parity. This method works on an N X N cell area and can correct multi-bit upsets. The experimental analysis validates the effectiveness of the proposed methodology by comparing its efficiency with existing methodologies. In different varieties of error patterns such as equilateral triangle, pentagon, hexagon etc., the capability of error detection and correction of HVDNQ is much better than existing methods.
- Published
- 2021
49. Analysis of The Influence of Pentagon Fraud in Detecting Financial Statement Fraud Using Method F- Score
- Author
-
Amrizal Amrizal, Vina Yusniarti, and Henny Mulyati
- Subjects
Pentagon ,050208 finance ,Actuarial science ,0502 economics and business ,05 social sciences ,050201 accounting ,Business ,F1 score ,Financial statement - Abstract
This study aims to examine the elements of fraud in the fraud pentagon theory in detecting financial statement fraud. Pentagon fraud is variables from the pressure element, opportunity, rationalization, capability, and elements of arrogance, namely political relationships which are hypothesized to affect financial statement fraud. The F-Score method is used to determine financial statement fraud. This research sample was selected using the purposive sampling method from 47 manufacturing companies in the basic industry and chemicals industry listed on the Indonesia Stock Exchange (BEI) in the period 2015 to 2019. Hypothesis testing uses multiple regression analysis models using SPSS 22 to test the effect of the target. finance, financial stability, external pressure, institutional share ownership, ineffective supervision, influence on the nature of the industry, quality of external auditors, replacement of auditors, change of directors and political relations to financial statement fraud. The results showed that the quality of external auditors and auditor turnover had a significant positive effect on financial statement fraud. Meanwhile, financial targets, financial stability, external pressure, institutional share ownership, ineffective supervision, the influence of the nature of the industry, the change of directors, and political relations have no effect on financial statement fraud.
- Published
- 2021
50. Nice pairs of disjoint pentagons in fullerene graphs
- Author
-
Yaxian Zhang and Heping Zhang
- Subjects
Fullerene ,010304 chemical physics ,Series (mathematics) ,Applied Mathematics ,010102 general mathematics ,General Chemistry ,Disjoint sets ,01 natural sciences ,Graph ,Combinatorics ,Pentagon ,0103 physical sciences ,0101 mathematics ,Mathematics - Abstract
A subgraph H of a graph G with a perfect matching is called nice, if $$G-V(H)$$ has a perfect matching. Very recently, Doslic (JMC 58:2204-2222, 2020) pointed out that every fullerene graph contains a nice pair of disjoint odd cycles and proposed a series of problems on whether such a pair of odd cycles can be chosen as pentagons. In this paper, we show that any fullerene graph always contains a nice pair of disjoint pentagons, which solves completely Problems 1 and 2. Further, we prove that if a fullerene graph satisfies that each pentagon is adjacent to at most two other pentagons, then any pair of disjoint pentagons is nice except for only one fullerene graph on 36 vertices. As a consequence, for the IPR fullerenes (any two pentagons are disjoint), the result also holds, which thus answers positively Problems 4 and 6.
- Published
- 2021
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