Dual Concept Research Articles

Experimenting with a strong dual necessity approach to social progress

Different social progress indices assess well-being and development differently and thus reflect distinct conceptions of social progress. Broadly, these conceptions fall into two categories: ‘subjective’—the attitudes of individuals; and ‘objective’—external standards. Our starting point is a strong ‘dual necessity’ claim, namely that the two categories of conception have joint-special significance. Such a strong dual necessity conception, when operationalized, demands very low compensability/degree of substitution between the two independent indices, objective and subjective. Experimenting with this idea, we hypothesize that implementing low substitution empirically influences outcomes. Previous research presented this concept and exemplified initial empirical outcomes. The present work enhances and broadens this research by employing the constant elasticity of substitution (CES) function, which allows for the adjustment of substitution levels and comparison of resulting rankings. Furthermore, we demonstrate the results using two different well-known and commonly used indices: Human Development Index (HDI) and Sustainable Development Goals Index (SDGI). Our findings show that using a low substitution approach alters the social progress rankings of many countries in comparison to the original components’ rankings and to a high substitution combination of the two. This holds particularly true for countries in the middle of the original rankings. The paper’s original contribution is that it establishes the CES function as a useful device for implementing the idea of ‘dual necessity.’ Importantly, by experimenting with low substitution, and exemplifying its empirical significance with the CES function, the paper also contributes to further validating a strong dual necessity conception and justifies its own measurement. Such measurement should be of value to social scientists, practitioners and policymakers who care for balanced social progress: social progress that does not neglect either of the two aspects (subjective or objective).

Scintillation light in SBND: simulation, reconstruction, and expected performance of the photon detection system

SBND is the near detector of the Short-Baseline Neutrino program at Fermilab. Its location near to the Booster Neutrino Beam source and relatively large mass will allow the study of neutrino interactions on argon with unprecedented statistics. This paper describes the expected performance of the SBND photon detection system, using a simulated sample of beam neutrinos and cosmogenic particles. Its design is a dual readout concept combining a system of 120 photomultiplier tubes, used for triggering, with a system of 192 X-ARAPUCA devices, located behind the anode wire planes. Furthermore, covering the cathode plane with highly-reflective panels coated with a wavelength-shifting compound recovers part of the light emitted towards the cathode, where no optical detectors exist. We show how this new design provides a high light yield and a more uniform detection efficiency, an excellent timing resolution and an independent 3D-position reconstruction using only the scintillation light. Finally, the whole reconstruction chain is applied to recover the temporal structure of the beam spill, which is resolved with a resolution on the order of nanoseconds.

12466 Dual Bone Defect In Patients With Charge Syndrome

Abstract Disclosure: N. Reyes: None. R.J. Santen: None. S.M. Jan De Beur: None. R. Balasubramanian: None. Chromodomain Helicase DNA-binding protein 7 (Chd7) is an ATP-dependent chromatin modifier that mediates nucleosome remodeling. Chd7 mutations result in CHARGE syndrome characterized by coloboma, heart defects, choanal atresia, growth/developmental delay, ear abnormalities, and hypogonadotropic hypogonadism/Kallmann syndrome (IHH/KS). Testosterone has direct and indirect effects (through estrogen), to increase bone formation and decrease bone resorption. Untreated hypogonadism is associated with decreased bone density and fractures. Reports of fractures and low bone density in CHARGE syndrome patients have been attributed to sex hormone deficiency associated with hypogonadism. However, recent data from a Chd7 mouse knockout model suggests an intrinsic Chd7-related bone defect. In wild-type mice, Chd7 promotes osteogenic differentiation of mesenchymal stem cells. Chd7 deficient mice show markedly reduced osteoblasts. Thus, we propose, a dual bone defect in CHARGE syndrome resulting from impaired osteogenesis from CHD7 and sex steroid deficiency; and increased bone resorption due to lack of sex steroids. Here we present two individuals with CHARGE syndrome with markedly low bone density and literature review supporting the dual bone defect concept. Case 1 is a 30 yo male with a pathogenic CHD7 mutation, multiple congenital anomalies of CHARGE syndrome and hypogonadotropic hypogonadism. He had multiple fractures in his teen age years and a bone density Z score of -5.2 at the lumbar spine and -3.3 at the left femoral neck. Because he did not tolerate androgen therapy, a single infusion of zoledronic acid was administered with no further fractures for eight years following infusion. Case 2 is a male evaluated for IHH/KS and ultimately diagnosed with CHARGE Syndrome based on a pathogenic CHD7 mutation. Despite 7 years of testosterone therapy with full virilization, his bone density remained low at Z-score of -1.9 at the spine and -2.6 at the total hip. Results: Both patients had low bone density, one while untreated and the other after full virilization with exogenous androgens. This raises the question whether the bone defects were related to the CHD7 mutation, to androgen deficiency or both. To answer this question, a literature search examined bone density data in untreated patients with CHARGE syndrome versus IHH/KS. We found substantially lower bone density in untreated CHARGE patients Z score -3.46±0.36 (SEM) (n=13) versus IHH/KS -2.16 ±1.0 (n=4). Furthermore, the bone density was also lower in treated CHARGE patients -2.46±0.28 (n=6) versus IHH/KS -0.94±0.26 (n=140). Conclusion: These data, taken together, provide direct human evidence to support the concept that the CHD7-related CHARGE syndrome patients have a defect in both osteogenesis as well as an effect of sex steroid deficiency on bone. Presentation: 6/3/2024

Introducing the Third-Order Fuzzy Superordination Concept and Related Results

Third-order fuzzy differential subordination studies were recently initiated by developing the main concepts necessary for obtaining new results on this topic. The present paper introduces the dual concept of third-order fuzzy differential superordination by building on the known results that are valid for second-order fuzzy differential superordination. The outcome of this study offers necessary and sufficient conditions for determining subordinants of a third-order fuzzy differential superordination and, furthermore, for finding the best subordinant for such fuzzy differential superordiantion, when it can be obtained. An example to suggest further uses of the new outcome reported in this work is enclosed to conclude this study.

Physician-dentist dual referral model concept for coordinated bone anabolic therapy

BackgroundBone anabolic drugs used for the pharmacologic treatment of osteoporosis have the potential to enhance alveolar bone regeneration to improve implant success. There are no US Food and Drug Administration–approved drugs indicated to improve oral bone density around teeth or implants. MethodsThe authors summarized expert opinions on a novel coordinated treatment approach leveraging the effects of systemic bone anabolic drugs to enhance dental implant therapy in patients with osteoporosis and a dual referral model for physicians and dentists to address the clinical needs of patients with osteoporosis from a comprehensive perspective of oral-systemic health. Interviews of key opinion leaders were conducted with a bone health specialist group consisting of specialists in orthopedic surgery, internal medicine, geriatrics, endocrinology, and clinical densitometry and a surgical dental specialist group consisting of periodontists and oral surgeons. ResultsOverall, both groups shared positive feedback on the idea of strategically timing administration of anabolic osteoporosis drugs with dental treatment. Both groups expressed interest in the dual referral model. ConclusionsThe feedback of key opinion leaders supported the coordinated bone anabolic therapy concept and identified a need for improved interdisciplinary collaboration, education, and communication to realize the synergies of physician-dentist clinical cooperation. Practical ImplicationsStrategic timing of osteoporosis therapy could improve skeletal bone health and reduce fracture risk while offering adjunctive dental benefits.

Accountability as a mechanism and a virtue in Irish public sector recordkeeping

Purpose Although legislation and regulations form an important foundation for recordkeeping and for accountability, questions of transparency and openness must be addressed in a wider context. Oliver and Foscarini have argued for the importance of recognising differing cultures and the ways in which they value records and recordkeeping. In addition to reporting mechanisms and relationships, accountability must encompass a culture and a mindset which is transparent, responsive and focused on self-improvement. This paper aims to apply a dual interpretation of accountability in the context of Irish public sector recordkeeping to identify shortcomings and suggest potential remedies with a view to improving the accountability of Irish recordkeeping itself, and the extent to which it contributes to wider accountability in society. Design/methodology/approach This paper assesses accountability in Irish public sector recordkeeping using a model suggested by Mark Bovens, which views accountability as both a mechanism and a virtue. The model emphasises that both interpretations are necessary but that mechanisms (laws, regulations and checklists) on their own cannot be sufficient to satisfy accountability requirements. As noted by Onora O’Neill, the aim of accountability should not be checklists or artificial metrics, but the nurturing of behaviours and cultures which make public institutions more deserving of our trust. Reference will be made to Irish legislation, to records management policies in government departments, to relevant annual reports and to current practice with regard to appraisal and other recordkeeping functions to measure Irish public sector recordkeeping against Bovens' model. Findings This paper suggests that Irish public sector recordkeeping has a range of shortcomings under both the narrow (mechanism) and broad (virtue) interpretations of accountability. Lack of reporting requirements and oversight mechanisms in existing legislation allows for major gaps in public sector recordkeeping, facilitating a lack of accountability in the citizen–state relationship. Meanwhile, an absence of records management policies and an overall lack of appreciation of the value of records leads to opaque practices and a lack of transparency. The recordkeeping profession itself adopts processes and practices, which are not aligned with the concept of accountability as a virtue, and which do not reflect a commitment to transparency and meeting the legitimate interests of stakeholders. This paper suggests changes in relevant legislation but also suggests that these must be accompanied by a more open and responsive working culture within the recordkeeping profession. Originality/value By applying Bovens’ dual concept of accountability, this paper provides a new and more comprehensive assessment of public sector recordkeeping in Ireland, which can equally be applied in other contexts. It identifies ways in which revised legislation can contribute to greater accountability, but emphasises that regulations must be accompanied by a culture of transparency and responsiveness, and that recordkeepers have a crucial role to play in terms of their own commitment to transparency and professional accountability.

Spatio-temporal analysis of land use and land cover dynamics in a part of Southern Nigeria

Agriculture, industrialization, transportation, urbanization and other anthropogenic activities have impacted on the natural cover of the earth surface, hence the dual concepts of land use and land cover (LULC). This study analyses spatio-temporal dynamics in LULC in part of southern Nigeria (path 189 and row 056) between 2002 and 2023using satellite imageries: namely, Landsat Enhanced Thematic Mapper Plus ETM+ of 2023, 2014 and 2002. The classification of land coverwas done with the aid of ArcGIS.The study revealed spatial dynamics in LULC over the study period. The percentage of the study area under cultivation increased from 7.96% in 2002, 17.79% in 2014 to 30.67% in 2023. Also, built-up area increased from 4.36% in 2002, 8.29% in 2014 but decreased to 7.06% in 2023. While areas of dense forest were 34.59% in 2002, 21.42% in 2014 and 11.57% in 2023, bare surface was 4.94% in 2014, 1.19% in 2002 and 25.34% in 2023.Oil spill was 6.13% in 2002, 6.42% in 2014 and 2.07% in 2023. Secondary regrowth/Plantation was 0.19%, 4.22% and 5.53% in 2002, 2014 and 2023 respectively. Water bodieswere 3.37% (2002), 7.06% (2002) and 11.27% (2023). The study recommends enactment of an enabling law or enforcement of existing laws governing forest protection and raising awareness and education of inhabitants on the need to preserve the natural land cover.

Integrated line-field optical coherence tomography and scheimpflug imaging for corneal imaging

Previously we demonstrated a combined scanning-point optical coherence tomography (OCT) and Scheimpflug Imaging (SI) system, to provide cross-section images of the corneal layers and the whole anterior segment of the eye simultaneously. However, to fully realise the benefits of this dual imaging modality concept towards clinical practice, it is required that the OCT part of the system can achieve ultra-high axial resolution (<3 µm in air) and faster imaging speeds, without using prohibitively expensive components. To achieve this, a new imaging device integrating line-field OCT and SI, using a supercontinuum light source, is demonstrated. This line-field configuration enables both OCT and SI B-scan to be captured using the same light illumination in a single shot, which is the most significant improvement over single point scanning. This achieves an OCT axial resolution down to 2.1 µm in air (1.6 µm in corneal tissue) and an imaging speed up to 213 kA-Scans/s. Since the OCT and SI capture the identical corneal position and serve as cross-validation, this technique offers a great method for accurately determining the individual corneal thickness and refractive index, thereby minimizing individual variations, which can help determine the extent of cutting or correction needed in vision correction. Moreover, the precise measurement of corneal thickness provided by this technique allows for a better understanding of the biomechanical properties of the cornea. We demonstrate the efficacy of the proposed system by evaluating porcine and bovine eyes ex-vivo for determining the corneal refractive index and thickness.

Rhinestone Cowboys: The Problem of Country Music Costuming

Abstract In this paper, I attempt to answer the problem of country music costuming. That is, how can we reconcile the practical identity associated with country music with the image of the male country singer as the “rhinestone cowboy.” This is the question of how to make sense of the rural, working-class, ruggedly, and traditionally masculine persona common to the genre and seemingly endorsed by it with the elaborately embroidered, brightly colored, and highly embellished fashion of the genre. The intractability of this problem has led some to argue that the simplest solution is to just deny country music authenticity discourse altogether. I argue that by accounting for country music authenticity in terms of the genre’s being a dual character concept, we can fully address the skeptic’s worries. Beyond merely rendering the rhinestone encrusted “Nudie” suit compatible with country music aesthetic practice, this account also helps us make sense of the aesthetic value of country music costuming, and its potentially gender queer function.

Modulating charge distribution of MIL@CuFe-Se by in-situ interface engineering for high performance supercapacitors

Designing hybrid materials with ideal interfacial interactions derived from metal-organic frameworks (MOFs) remains significant but challenging for the realm of energy storage. Herein, a controllable dual interface engineering concept is proposed with the objective of eliminating the non-ideal effects by augmenting the interfacial contact area, enhancing the efficacy of charge transfer across interfaces. Specifically, electrode materials with dual interface (FeSe/Cu2Se and MIL/CuFe-Se) were well-designed by co-precipitation and in-situ selenide, where the FeSe/Cu2Se heterogeneous interface by in-situ selenitisation of CuFe prussian blue analogue (PBA) increases the surface roughness of nanocubes, enlarging the dual interfacial contact area of MIL/CuFe-Se and eliminating non-interfacial effects. Density Functional Theory (DFT) calculations confirm that the prepared electrodes exhibit both excellent rate performance and the ability to regulate interfacial charge transfer. Based on these advantages, the synthesised nanomaterials have a specific capacity of 913C/g at 1 A/g and a capacity retention of 86 % after 10,000 charge/discharge tests at 20 A/g. In addition, a hybrid supercapacitor (HSC) made of MIL@CuFe-Se (cathode) and activated carbon (AC, anode) has an energy density of 90 Wh kg−1 at 800 W kg−1 and a capacitance retention of 85.24 % after 10,000 cycles at 20 A/g. Remarkably, two MIL@CuFe-Se//AC HSC in series can illuminate a light emitting diode (LED) lamp, implying the potential application prospects. This study aims to identify a viable method for advancing the development of high-performance supercapacitor applications.

Minimal cover groups

Let F be a set of finite groups. A finite group G is called an F-cover if every group in F is isomorphic to a subgroup of G. An F-cover is called minimal if no proper subgroup of G is an F-cover, and minimum if its order is smallest among all F-covers. We prove several results about minimal and minimum F-covers: for example, every minimal cover of a set of p-groups (for p prime) is a p-group (and there may be finitely or infinitely many, for a given set); every minimal cover of a set of perfect groups is perfect; and a minimum cover of a set of two nonabelian simple groups is either their direct product or simple. Our major theorem determines whether {Zq,Zr} has finitely many minimal covers, where q and r are distinct primes. Motivated by this, we say that n is a Cauchy number if there are only finitely many groups which are minimal (under inclusion) with respect to having order divisible by n, and we determine all such numbers. This extends Cauchy's theorem. We also define a dual concept where subgroups are replaced by quotients, and we pose a number of problems.

Investigation of Reliability Issues in a hybrid Extended Dual Source Double Gate Tunnel FET

This paper presents the design and analysis of an enhanced tunnel field-effect transistor (TFET) structure. The proposed structure comprises a dual source and a double gate, aiming to enhance the DC characteristics of the TFET. The dual source concept is used in the structure with two homogeneous gates, which play a major role in boosting the tunneling parameters. It also examines the affectability of source dimensions and drain doping on the performance of the proposed device. Furthermore, we have compared our proposed structure with the single source device. The proposed device after optimization exhibits an extraordinary I ON/I OFF ratio of 2.33 × 1013, with an I OFF of 6.25 × 10−19A/µm, and decent I on of 1.46 × 10−5A/µm along with a subthreshold swing (SS) of 43 mV/dec. The device characteristics have been analyzed in the presence of interface traps. The electrical parameters have been quantified against various types and concentrations of traps. The performance of the proposed device has been compared with the existing TFET structures.

Teaching Reform of Materials Science and Engineering Foundation under the Background of "Carbon Peak and Carbon Neutral"

Universities have always been pioneers, advocates and leaders of economic and social reform, and should play a key role in this systematic change. In July 2021, the Ministry of Education issued the Action Plan for Carbon-neutral Scientific and Technological Innovation in Institutions of Higher Learning, which clarified the major tasks for universities to provide scientific and technological support and talent support for the dual-carbon target. The first to realize the campus carbon neutral, and promote the carbon neutral scientific and technological innovation and the training of high-quality talents with the construction of campus environment, is a positive response to the national strategy and the action plan of the Ministry of Education. In the Work Plan for Strengthening the Construction of the Training System for Higher Education issued in May 2022, the Ministry of Education particularly stressed that universities should strengthen green and low-carbon education, strengthen the construction of teaching resources in the field of "dual-carbon", and promote the high-quality training of "dual-carbon" related professionals. The key to controlling dual carbon lies in material technology. Therefore, it is particularly important to cultivate materials professionals with dual carbon concepts and related technologies. Based on this, the members of our teaching group have carried out a series of teaching reforms for the course "Fundamentals of Materials Science and Engineering" based on years of frontline teaching experience. They have combined theoretical teaching and practical teaching, providing strong guarantees for cultivating competitive talents in the field of dual carbon control.

Dual Feuerbach Theorem in an Isotropic Plane

The dual Feuerbach theorem for an allowable triangle in an isotropic plane is proved analytically by means of the so-called standard triangle. A number of statements about relationships between some concepts of the triangle and their dual concepts are also proved. 2000 Mathematics Subject Classification. 51N25

Field tests of square and double exponential pulses for transient resistivity measurements using Wenner arrays and hemispheres

Models of frequency-dependent soil resistivity ρ(f) suggest the dual concept of time-dependent resistivity ρ(t) that, for high resistivity soil, increases from 100 ns to 100 μs, a range of time relevant for lightning backflashover performance calculations. Measurements of ρ(t) can be made by impressing impulse or step current and monitoring voltage rise. Time-dependent resistivity can be established with Wenner or Schlumberger probe arrays and also with oblique fall-of-potential measurements from buried hemispheres. Tests show that rectangular and double-exponential pulse currents both have value. Specialized evaluation using “Drained Net Charge” concepts may yield estimates of low-frequency resistivity ρo.

Monomer Equilibrium and Transport in Emulsion and Miniemulsion Polymerization.

The dual concepts of monomer equilibrium and monomer transport in emulsion and miniemulsion polymerization are discussed in depth. The concepts must be considered together since, first, dispersed-phase polymerizations (in this case emulsion and miniemulsion polymerizations) are by their nature multiphase systems that function only due to interphase mass transfer; and second, because phase equilibrium determines the driving force for monomer transport in these (and all heterophase reaction) systems. Concepts of polymer particle swelling are reviewed, and the question first addressed by Paul Flory in the 1950s: Are emulsion polymerizations transport or reaction limited? is revisited in detail.

Hidden dual mathematical symmetry in the genetic code

We describe the genetic code in terms of numbers that help us to find several dual symmetries. Our formulation can even be rewritten regarding the up-down and right-left dual concepts. We argue that our work may bring many topological tools to studying the DNA molecule, including the Grassmann-Plücker coordinates, which are important in mathematical and physical contexts.

Dual harvesting from exhaust gas of diesel generators using thermoelectric generators and cold water tank

The present work concerns a dual harvesting concept applied to exhaust gas of Diesel generators using thermoelectric generators and cold water tank. To proceed, a simplified thermal modelling is developed and appropriate parametric analysis of power generation with the TEGs and heat recovered is conducted in function of the Diesel generator power and the TEG thermal conductivity and thickness. It was shown that powers up to 534 W can be generated with the TEGs and heat recovery rates up to 4463 W can be obtained for a Diesel generator power of 125 kW. Also, it was shown that the temperature difference across the TEGs and the power generated increase exponentially when the Diesel generator power and ratio of thickness to thermal conductivity of TEGs increase.

A Short Survey on Biharmonic Riemannian Submersions

The study of biharmonic submanifolds, initiated by B. Y. Chen and G. Y. Jiang independently, has received a great attention in the past 30 years with many important progress (see the reference for some recent books with vast references therein). This note attempts to give a short survey on the study of biharmonic Riemannian submersions which are a dual concept of biharmonic submanifolds (i.e., biharmonic isometric immersions).

Lawful, but not Really: The Dual Character of the Concept of Law

Disagreement on law’s relationship to morality has long been driven by disagreement about our ordinary concept. Until recently, however, there had been no systematic investigation of lay intuitions. In this paper, we advance this nascent effort. Across two studies (N = 697), our findings reveal that most people consider law to be more than a matter of political circumstance alone. Contrary to the expectations of most contemporary philosophers, morality (both substantive and procedural) emerges as a key influence on judgments of legal validity: many people say that conduct prohibited by immoral statutes is not truly illegal, and that immoral conduct which was never explicitly prohibited is truly illegal. This suggests that people often treat law as a dual character concept that, like the concepts of scientist or of artist, features autonomous concrete and abstract dimensions.