Dual Face Research Articles

The dual face of structural object case: on Lithuanian genitive of negation

We analyze genitive of negation (GN) in Lithuanian. When the verb is negated, GN is realized on an object that would otherwise be realized as accusative. We demonstrate that Lithuanian GN is a syntactic (in line with Arkadiev 2016) and morphological phenomenon in contrast to Russian GN, whose realization is influenced by semantic factors (e.g. Kagan 2013). It differs from Russian (Pesetsky 1982) in that (i) it is always assigned to a DP which would otherwise bear structural accusative regardless of its semantic properties, and (ii) it cannot affect a structural nominative DP regardless of whether it is an external or internal argument. Lithuanian GN, in this respect, is similar to Polish GN (e.g. Przepiórkowski 2000, Witkoś 2008). We offer a three-layered approach to case, arguing that GN is a reflection of structural object case, assigned in syntax, then translated to morphological genitive case at PF and, finally, realized at Vocabulary Insertion (Halle & Marantz 1993). Thus, structural object case has two morphological realizations: as genitive under negation or as accusative in the absence of negation. Lithuanian also exhibits long-distance GN (Arkadiev 2016), showing that case boundaries can cross non-finite clauses without an overt CP element, suggesting these are not phases.

Single registered midwives contributing care for general patients: a scoping study

Background: Midwifery vacancies persist in small maternity units in Australian rural and private settings where midwives are expected to also care for general (non-maternity) patients when midwifery activity is low. Recruiting dual registered nurse/midwives over single registered midwives is preferred, as single registered midwives are seen as inflexible to assist with nursing work. Little is known about single registered midwives’ contribution to care of general patients in small maternity units. Objective: This scoping study aimed to consult single registered midwives and managers of single registered midwives to determine perspectives on single registered midwives’ contribution in small maternity units where the workload encompasses both midwifery and care of general patients, to inform further research. Study design and methods: This study used a qualitative description design. Two online focus groups were held, one containing three single registered midwives, the other three managers of single registered midwives. Similar questions were posed to each group about single registered midwives’ contribution to care in small maternity units. Data analysis was conducted collaboratively through coding and thematic categorisation processes. Results: Four major categories were found. Single registered midwives’ scope of practice concerning general patients is undefined; single registered midwives possess transferrable clinical skills applicable to general patients; practical, professional, and emotional barriers exist for single-registered midwives in small maternity units; and future research recommendations include scope of practice and workplace experiences. Discussion: Persistent midwifery vacancies are implicated in the closure of small maternity units to the detriment of childbearing families. Understanding the contribution of single registered midwives in small maternity units will inform future research and midwifery recruitment strategies to improve access to services. Conclusion: The experiences of single registered midwives working in small maternity units warrants further investigation. This scoping study contributes to the literature about single registered midwives’ experiences in small maternity units and suggests considerations for future research. Implications for research, policy and practice: Findings from this study provide information about the contribution of single registered midwives to small maternity units where there is an expectation to contribute to care of general patients in addition to midwifery. Future research into the experiences of single registered midwives working in these settings will generate information to inform recruitment strategies, potentially improving access to maternity care in small maternity units and may be used in the review of midwifery regulation and educational standards. What is already known about the topic? Midwifery vacancies persist in small maternity units in rural and regional areas where the workload comprises both midwifery and nursing practice, despite strategies to recruit dual registered nurse/midwives. Dual registrants face challenges in maintaining both nursing and midwifery professional obligations in small maternity units. There are increasing numbers of single registered midwives registering each year in Australia and educational opportunities to become a single registered midwife exist in rural settings. What this paper adds: Single registered midwives make a useful contribution to care in small maternity units, and they assist with the care of general patients. The scope of practice for single registered midwives in assisting with general patients is not defined. Recommendations for future research include scope of practice for assisting with general patients and workplace challenges faced by single registered midwives because of their midwife-only qualification.

Automatic surface mesh generation by a binary-tree method

In order to realize the automation of surface mesh generation for arbitrary complex models, this paper proposes a binary-tree method (BTM) which can generate discontinuous grids. Compared with continuous grids, the adjacency relationship between discontinuous grids generated by BTM is more flexible, so it is easier to discretize “dirty” geometry without geometry repair than continuous grids. The BTM can adaptively generate meshes by features based on the curvature of curves and surfaces, and thus it does not need to construct a sizing field. Anisotropic meshes can also be directly generated by selecting the direction of subdividing meshes. Moreover, according to the periodic characteristics of periodic surfaces, the topological structure of the initial mesh can be designed to achieve mesh generation on periodic surfaces. Successful numerical examples are used to illustrate the effectiveness and robustness of the presented methods for meshing various types of geometric surfaces and reveal the excellent performance of the BTM. In addition, the BTM has been employed by the dual interpolation boundary face method (DiBFM) to solve 3D problems.

Dynamics Modeling and Load-Sharing Performance Optimization of Concentric Face Gear Split-Torque Transmission Systems

The concentric face gear split-torque transmission system (CFGSTTS) has the advantages of a large reduction ratio and high power density. The CFGSTTS has considerable potential to be applied in helicopter main reducers. As such, in this study, we analyzed the load distribution characteristics of a dual input–dual output concentric face gear split-torque transmission system. A load-dependent time-varying meshing stiffness surrogate model was designed based on a feedforward neural network. The difference in the meshing stiffness between the pinion driving and face gear driving was analyzed. The coupled lumped parameter dynamic model of the bending–torsion–axis–pendulum was developed through Newton’s second law, and the influences of the time-varying meshing stiffness, backlash, comprehensive transmission error, support stiffness, and damping were considered. Finally, the impact of the support stiffness on the load-sharing coefficient was analyzed. An optimization model was constructed with the objective function of minimizing the sum of the load-sharing coefficients and was solved by the marine predator algorithm. In addition, the validity of the optimization results was verified with a finite element model. The results indicate that (1) smaller support stiffnesses of input gears benefit the corresponding load balance; (2) the support stiffnesses of the face gears have different laws of influence on the load-sharing coefficient at the input gear and idler, and the support stiffnesses of the other gears need to be comprehensively considered; (3) the larger supporting stiffnesses of the idler gears and tail gear are beneficial for decreasing the load-sharing coefficient at the input gear; and (4) the optimized load-sharing coefficients at Input Gears 1 and 2 and the idler gear decrease by 23.7%, 24.2%, and 4.6%, respectively.

Dual interpolation boundary face method for 3-D acoustic problems based on binary tree grids

A dual interpolation boundary face method (DiBFM) based on binary tree grids is presented to solve 3-D acoustic problems in this paper. The boundary element method (BEM) is widely used to solve acoustic problems for its advantage of only discretizing boundaries and satisfying Sommerfeld radiation condition. Combining boundary integral equations with computer graphics, the boundary face method (BFM) is the enrichment of the BEM and is able to avoid the geometric errors between CAD and CAE models. By adding virtual nodes on the vertices and edges of tradition discontinuous elements, the dual interpolation elements are introduced and have higher interpolation accuracy. What's more, since there is no need for grids continuity, the binary tree grids can be applied to the implementation of the DiBFM, and have the ability to make mesh generation more automatic and easier. The Burton-Miller formulation is employed to remove the non-uniqueness issue. Several numerical examples are given to demonstrate the practicability and superiority of the proposed method.

Dual diagnosis, social work and the perspective of a social work student

PurposeThis paper reports a social work student’s experience of a mental health rehabilitation placement. The term “dual diagnosis” in this context includes people who experience both a mental health diagnosis and a substance use disorder. The purpose of this paper is to highlight the student experience as the author learnt about some of the challenges that people with dual diagnoses face during the recovery process.Design/methodology/approachThe author kept a journal during the placement. Critical reflection was used to interrogate the journal entries for key themes and events that contributed to the author’s learning about social work practice and dual diagnosis.FindingsThis study found that social workers are in a fortunate position to work in this multi-disciplinary setting and contribute the social work perspective to care for people with dual diagnosis. However, there are still some gaps in achieving optimal care.Practical implicationsSuggestions for further practice development include a more integrated approach between services, further training for clinicians and a focus on a community-based setting as opposed to an institutionalised one.Originality/valueAccording to the author, the student experience is important because students see situations and settings with fresh eyes that can highlight things that experienced practitioners take for granted.

The influence of fiber on salt frost resistance of hydraulic face slab concrete

AbstractAs an important antiseepage structure of concrete face rockfill dam, the durability of concrete face slab is very important for the long‐term safe operation of the dam. Polypropylene fiber (PPF) and polyacrylonitrile fiber (PANF) are used as research objects to study the salt frost resistance of dual fiber Face slab concrete. The corrosion resistance of PPF and PANF concrete under different fiber volume was compared. The mass loss, residual compressive strength, relative dynamic modulus of elasticity and microstructure were evaluated in salt freezing environment. The results show that adding PPF and PANF to concrete can effectively improve the frost resistance of concrete, and the performance law is similar under the coupling failure of chloride and freeze–thaw cycles. Under the same volume, the effect of PPF concrete is more significant than PPF concrete, and the effect of adding two kinds of fibers at the same time is better than adding one fiber alone. Within the evaluation range, choosing 0.5% PPF and 0.5% PPF as additives is the best choice to improve the salt frost resistance. The results of scanning electron microscopy microstructure analysis of corrosion products are consistent with that of macro property analysis.

A multi-domain BEM based on the dual interpolation boundary face method for 3D potential problems

A multi-domain BEM based on the dual interpolation boundary face method for 3D potential problems

Environmental, economical, and machinability based sustainability assessment in hybrid machining process employing tool textures and solid lubricant

Different techniques can be employed to improve the sustainability and machinability characteristics of a machining process. The sustainability assessment analyzes different aspects and indicators of an operation, including environment (energy consumption and carbon emission), economy (cost and production rate), and social (operator health and safety). The comparison of machining techniques based on sustainability assessment requires quantitative evaluation of indicators and sustainability index (SI) based on machining characteristics.Current research employs two main techniques of tool textures (on dual tool faces) and solid lubricant during the external grooving operation to make a sustainable hybrid process. Tool textures include pit-shape and linear patterns fabricated on rake and clearance faces.Results showed that in the case of energy consumption, the linear textured tool with solid lubricant consumed the minimum value by about 10.7 kJ. In the case of carbon emission, linear textured tool in dry machining conditions emitted about 0.008 kg-CO2 which was the minimum value. In the case of cost, a linear textured tool in dry machining conditions required 0.118 $ which was the cheapest process. In the case of production rate, the linear textured tool with solid lubricant presented the highest production rate by about 1773 parts/shift. On average, textures achieved about 23 higher SI values whereas solid lubricant reduced SI by about 13. Finally, linear texture in the dry condition achieved the most considerable value of the SI (52.5) and was selected as the best sustainable machining operation.

A High Performance Dual Stage Face Detection Algorithm Implementation using FPGA Chip and DSP Processor

A dual stage system architecture for face detection based on skin tone detection and Viola and Jones face detection structure is presented in this paper. The proposed architecture able to track down human faces in the image with high accuracy within time constrain. A non-linear transformation technique is introduced in the first stage to reduce the false alarms in second stage. Moreover, in the second stage pipe line technique is used to improve overall throughput of the system. The proposed system design is based on Xil¬inx’s Virtex FPGA chip and Texas Instruments DSP processor. The dual port BRAM memory in FPGA chip and EMIF (External Memory Interface) of DSP processor are used as interface between FPGA and DSP processor. The proposed system exploits advantages of both the computational elements (FPGA and DSP) and the system level pipelining to achieve real time perform¬ance. The present system implementation focuses on high accurate and high speed face detec¬tion and this system evaluated using standard BAO image database, which include images with different poses, orientations, occlusions and illumination. The proposed system attained 16.53 FPS frame rate for the input image spatial resolution of 640X480, which is 23.4 times faster detection of faces compared to MATLAB implementation and 12.14 times faster than DSP implementation and 2.1 times faster than FPGA implementation.

A multi-domain BEM based on dual interpolation boundary face method for 3D elasticity problem

The dual interpolation boundary face method with Hermite-type moving-least-squares approximation (DiBFM-HMLS), presented recently, has certain advantages in simulating the discontinuous fields. Based on the DiBFM-HMLS and the matrix condensation technique, we proposed a multi-domain method for 3D elasticity problems in this paper. This method ensures an accurate interpolation for the multi-domain models with short edges or small chamfers. In the multi-domain DiBFM-HMLS, the virtual points in each subdomain, not as collocation points in the boundary integral equation (BIE), are eliminated by the HMLS approximation separately. Then, only the interfacial source points are reserved by the matrix condensation technique. The node-to-node interfacial condition in previous research is unemployed; instead of the former, a node-to-element format is constructed based on the moving-least-squares approximation (MLS). This mapping scheme possesses the potential for free mesh in the interface. Several numerical examples are used to reflect these advantages mentioned above.

Analysis and Design of Novel Axial Field Flux-Modulation Permanent Magnet Machines for Direct Drive Application

Axial field flux-modulation permanent magnet (AF-FMPM) machines have been developed for direct drive applications such as wind power generation, HEVs, and railway traction. However, the existing studies on AF-FMPM machines are limited to the PM rotor structure, and less research has been carried out on AF-FMPM machines with PM stator structure. This paper studies two axial field flux-modulation permanent magnet (AF-FMPM) machines, i.e., NS or NN type, which all consist of the same stator and rotor structures but the dual identical outer surface-mounted PM stators face each other in different position. A comprehensive theoretical analysis and global optimization of the AF-FMPM machine based on ANSYS Maxwell 3-D FEA is presented. The performance comparisons between the AF-FMPM machine (NS) and AF-FMPM machine (NN) are presented, including the influence of the critical structural dimensions on the machine performance, phase flux linkage, phase back EMF, cogging torque, and average torque performance. The results show that the phase back EMF and average torque of the AF-FMPM machine (NS) are more sinusoidal and higher than that of the AF-FMPM machine (NN). Furthermore, the NS type machine shows the non-saliency characteristics, while the NN type machine is the salient machine.

A comprehensive assessment of electrical performance and mismatch losses in bifacial PV module under different front and rear side shading scenarios

Bifacial modules are expected to enable greater energy generation at reduced cost owing to their dual face absorption nature, however this requires an in-depth understanding of the inherent self-shading of module. A cumulative effect of front and rear side inhomogeneity of irradiance may lead to difference in electrical performance of a bifacial module with respect to monofacial module, under similar shading scenarios. In this research work, an extensive analysis has been carried out through ray tracing simulations and a cell level electrical model of a bifacial module to evaluate the effect of front and rear side inhomogeneity in irradiance. The results for front side shading present a likeness to monofacial modules under similar shading conditions. The more critical and inherent rear-side inhomogeneity along with associated mismatch losses have been quantified through a novel linear model, developed to predict the mismatch loss in a bifacial PV module with high accuracy (R2 91.4%, MAE 1.63% and RMSE 1.91%). Using the model, discussion has been presented on mismatch losses in a 3x3 bifacial PV array, demonstrating the impact of rear inhomogeneity induced mismatch losses on overall system performance. A novel sensitivity study is also carried out to assess the impact of installation parameters on mismatch losses. The significance of this study is the importance of such in-depth assessment for future reliability studies as well as developing standard procedures for hotspot testing and mitigation for a bifacial PV module.

Dual face of HRM formalization in SME: A gift exchange approach

L’objectif principal de cette étude est de montrer le rôle de la formalisation de la GRH sur les relations d’échanges entre acteurs dans une PME appartenant au secteur de l’Economie Sociale et Solidaire. A partir de la théorie du don/contre-don, nous avons mené une étude qualitative longitudinale au sein d’une PME française. Les résultats montrent le double visage de la formalisation de la GRH : lorsqu’elle découle des valeurs humanistes du dirigeant, elle favorise les relations de don/contre-don ; lorsqu’elle répond à des contraintes environnementales, elle détériore les relations de don/contre-don. Plus précisément, les effets de la formalisation de la GRH sont à nuancer en fonction du sens conféré à celle-ci par le dirigeant.

Managing the Dual Faces of International–Civil Militarized Conflict (I-CMC): The Interstate Dimension

AbstractThis study examines how different conflict-management attempts over a broad time period affect the dynamics of one dimension of international–civil militarized conflict (I-CMC): the hostility–peace levels of relationships between states involved in those conflicts as well as the frequency and severity of their interactions. Using new data compilations on these conflicts and the management efforts embedded in them, we assess how effective each of the approaches and various contextual influences are in moderating state–state hostilities as well as the relative effectiveness (e.g., mediation versus military intervention). Our empirical analysis confirms that conflict-management efforts generally, and with respect to different management types, do not alter the overall hostile–peaceful relationships between states involved in I-CMCs. The empirical results on micro effects of conflict management produced clearer impacts from conflict-management approaches and contextual factors. In terms of mitigating conflict frequency, negotiation, military intervention, and peace operations had some negative effects on the time density of future militarized disputes. All approaches (the above three and mediation) were able to delay the onset of new disputes. Various contextual factors enhanced or mitigated the effects of conflict-management approaches.

Covid-19 Monitoring System Using Social Distancing Face Mask Detection and Classification on Live Video

Abstract: The spread of the Coronavirus has prompted individuals to remain indoors and adhere to COVID- appropriate practices, which include social distance, the use of face masks, hand sanitizers, and other measures to protectthemselves against infection. In heavily populated locations with limited resources, it is impossible to physically supervise compliance with these standards. As a result, an automated, lightweight, and powerful video monitoring system is required to make the process more efficient. This paper proposes an extensive and productive solution for performing person detection, social distance detection, face mask detection, and face mask classification using object detection, clustering, and Convolution Neural Networks (CNN) On video datasets, in addition to YOLOv3, density-based spatial clustering of applications with noise (DBSCAN), Dual Shot Face Detector (DSFD), and MobileNetV2 based binary classifier other techniques have also been used to achieve the predicted outcomes. This study also provides parallels for numerous face mask detection and classification models. Keywords: COVID-19, DBSCAN, DSFD, YOLOv3, MobileNetV2, CNN, clustering, Social Distance, Face Masks

Living Experiences with Maintenance Hemodialysis: A Qualitative Content Analysis.

Assessing and providing interventions to improve the comfort status of the patients' needs to be a priority of nursing practice and further research. We did this study to explore the living experiences with maintenance HD among these patients. This qualitative study was conducted using a conventional content analysis approach on 12 HD patients from February 10, 2019 to July 30, 2019. The data were collected through in-depth and semi-structured interviews and were analyzed using Grenham and Landman approach. The main theme was "dialysis therapies with dual face." Three main categories were included: "Dual mood by dialysis," "Dual feelings with dialysis, " and "Relying on the family and health care workers." The results showed that patients' dependence on HD was accompanied by both good and bad moods and created dual emotions both positive and negative. Influenced by these feelings, these patients had shown a variety of reactions such as trying to adjust to life on HD, relying on supports and beliefs. In this study, a dual face was seen in HD in the eyes of these patients. Therefore, "dual face HD therapy" was identified as the essence of the experiences of HD patients. Health-care providers should try to eliminate the bad and unpleasant face of HD.

Schubert calculus from polyhedral parametrizations of Demazure crystals

One approach to Schubert calculus is to realize Schubert classes as concrete combinatorial objects such as Schubert polynomials. Through an identification of the cohomology ring of the type A full flag variety with the polytope ring of the Gelfand–Tsetlin polytopes, Kiritchenko–Smirnov–Timorin realized each Schubert class as a sum of reduced (dual) Kogan faces. In this paper, we explicitly describe string parametrizations of opposite Demazure crystals, which give a natural generalization of reduced dual Kogan faces. We also relate reduced Kogan faces with Demazure crystals using the theory of mitosis operators, and apply these observations to develop the theory of Schubert calculus on symplectic Gelfand–Tsetlin polytopes.

Dual interpolation boundary face method for 3-D potential problem based on binary tree grids

This paper presents the dual interpolation boundary face method (DiBFM) based on a binary tree grid for solving the 3-D potential problems. The subdivision method based on binary tree algorithm is capable to generate both continuous and discontinuous grids, and to achieve the grids​ generation for arbitrary complex model much easier and automatically. By adding virtual nodes on the vertices and edges of traditional discontinuous element, the dual interpolation elements are introduced while the order is increased by two. The values of physical variables are approximated by Lagrange interpolation polynomial in the first-layer interpolation, and meshless interpolation is used to condense the degree of freedom of virtual nodes in the second-layer interpolation. Since no requirement is needed for the continuity of grids in the DiBFM, the dilemma of discontinuous grids are avoidable. In this paper, the DiBFM is implemented based on the binary tree grids to solve general problems with thin-wall structures and “geometrical construction noise”.

Politics of delegated governance: reforming vocational education and training

AbstractFollowing decades-long inertia, many countries started reforming vocational education and training (VET). Yet, respective reform processes that entail certain traits of the German dual system face challenges linked to domestic constraints. Focusing on secondary education and drawing on the Turkish case, this article examines VET’s transformation from a centralized, school-based, state-dominated system to a system based on school–industry collaboration. It suggests that effective adoption of VET reforms may be facilitated by bipartite coordination between government and employers’ organizations representing small- and medium-sized enterprises (SMEs). It unveils how such coordination led an institutional transformation, fostered by a broad cross-class VET coalition formed in a polarized fashion. Highlighting the role of political ownership and organizational capacity in VET reforms, it traces how the Justice and Development Party (AKP) accommodated SMEs’ demands, while sidelining labor. The article undertakes a power-distributional analysis tackling political conflicts and coalitions as drivers of institutional change and continuity.