Current Form Research Articles

Analysis of P-N Junction Length of Drain and Source in MOSFET Transistor Through TCAD Simulation

This paper delves into the convergence of mathematical and computer science principles within the realm of electronics engineering, particularly focusing on device-level transistor restructuring. A pressing challenge confronting the semiconductor sector is the persistent escalation of leakage current alongside technological advancements. At the heart of any chip or semiconductor device lies the transistor, serving as its fundamental building block. Among the various forms of leakage current, subthreshold leakage stands out as a dominant component in transistors. Within this study, a systematic exploration of the numerical association governing the physical configuration of MOSFET and leakage amount specifically the subthreshold one is undertaken. One innovative algorithm is crafted to facilitate the automated tracking of transistor structures, laying the groundwork for subsequent analyses. The simulation framework is meticulously constructed by leveraging mathematical formulations derived from the algorithmic outputs. Remarkably, the results obtained from the simulation conducted through TCAD software exhibit a remarkable proximity to established mathematical models. Given the ubiquity of Complementary Metal Oxide Semiconductor (CMOS) technology in contemporary semiconductor fabrication, it serves as the cornerstone for the simulation endeavours herein.

Analysis Of P-N Junction Length of Drain and Source in MOSFET Transistor Through TCAD Simulation

This paper delves into the convergence of mathematical and computer science principles within the realm of electronics engineering, particularly focusing on device-level transistor restructuring. A pressing challenge confronting the semiconductor sector is the persistent escalation of leakage current alongside technological advancements. At the heart of any chip or semiconductor device lies the transistor, serving as its fundamental building block. Among the various forms of leakage current, subthreshold leakage stands out as a dominant component in transistors. Within this study, a systematic exploration of the numerical association governing the physical configuration of MOSFET and leakage amount specifically the subthreshold one is undertaken. One innovative algorithm is crafted to facilitate the automated tracking of transistor structures, laying the groundwork for subsequent analyses. The simulation framework is meticulously constructed by leveraging mathematical formulations derived from the algorithmic outputs. Remarkably, the results obtained from the simulation conducted through TCAD software exhibit a remarkable proximity to established mathematical models. Given the ubiquity of Complementary Metal Oxide Semiconductor (CMOS) technology in contemporary semiconductor fabrication, it serves as the cornerstone for the simulation endeavours herein.

List of the academic editors of Al-Qadisiyah Journal for Engineering Sciences (QJES) for the period from January 2024 to the present

Al-Qadisiyah Journal for Engineering Sciences (QJES), E-ISSN: (2411-7773), P-ISSN: (1998-4456), was established in 2008. The Journal, in its current form, is intended to contribute to the state of the art in all engineering research fields. The Journal is a peer-reviewed journal published by The University of Al-Qadisiyah, the College of Engineering. The journal is published quarterly (March, June, September, and December). The QJES has been indexed by Scopus recently.

Borne Out with Whalebone: A Late Sixteenth-Century Farthingale Sleeve

An extant farthingale sleeve support and a silk satin sleeve to wear over it form part of a collection of garments still owned by the Willoughby family to which it originally belonged in the 1590s or early 1600s. This paper provides an insight into its history as part of the Willoughby women’s wardrobe and a technical description of its materials, manufacture and current form. Its construction matches contemporary documentary evidence for farthingale sleeves which were assumed to form part of elite dress. Evidence presented here suggests that the fashion moved rapidly through society and became a feature of ordinary women’s dress by the early seventeenth century.

The Foreign-Trade Zone and its Impacts on Neighboring Communities in Mobile, Alabama

abstract: The foreign-trade zone (FTZ) has become an essential part of national trade policy in the United States and an important aspect of promoting local development. Officially opened in its current form in 1983 under the official title of FTZ No. 82, the foreign-trade zone in Mobile, Alabama has become an integral part of the local economy and an important tool used by local councils for attracting overseas firms. Located primarily along the west banks of the Mobile Bay and Mobile River, with several sites dispersed throughout Mobile and Baldwin counties, the zone has been used as a catalyst for regional economic growth policy. The purpose of this study is to analyze the external costs and benefits to the local community using observational data and interviews with local authorities familiar with the zone. Qualitative findings indicate the zone has been a major source of foreign direct investment for Mobile and contributes to local economic development by attracting major transnational firms to the city. However, observations and interviews suggest the zone has primarily benefited large firms at the expense of smaller firms, provided little spillover into neighboring boroughs, and adversely affected the local environment and public health.

Air Quality and Health Impacts of Onshore Oil and Gas Flaring and Venting Activities Estimated Using Refined Satellite-Based Emissions.

Emissions from flaring and venting (FV) in oil and gas (O&G) production are difficult to quantify due to their intermittent activities and lack of adequate monitoring and reporting. Given their potentially significant contribution to total emissions from the O&G sector in the United States, we estimate emissions from FV using Visible Infrared Imaging Radiometer Suite satellite observations and state/local reported data on flared gas volume. These refined estimates are higher than those reported in the National Emission Inventory: by up to 15 times for fine particulate matter (PM2.5), two times for sulfur dioxides, and 22% higher for nitrogen oxides (NOx). Annual average contributions of FV to ozone (O3), NO2, and PM2.5 in the conterminous U.S. (CONUS) are less than 0.15%, but significant contributions of up to 60% are found in O&G fields with FV. FV contributions are higher in winter than in summer months for O3 and PM2.5; an inverse behavior is found for NO2. Nitrate aerosol contributions to PM2.5 are highest in the Denver basin whereas in the Permian and Bakken basins, sulfate and elemental carbon aerosols are the major contributors. Over four simulated months in 2016 for the entire CONUS, FV contributes 210 additional instances of exceedances to the daily maximum 8-hr average O3 and has negligible contributions to exceedance of NO2 and PM2.5, given the current form of the national ambient air quality standards. FV emissions are found to cause over $7.4 billion in health damages, 710 premature deaths, and 73,000 asthma exacerbations among children annually.

Base-extension semantics for modal logic

Abstract In proof-theoretic semantics, meaning is based on inference. It may seen as the mathematical expression of the inferentialist interpretation of logic. Much recent work has focused on base-extension semantics, in which the validity of formulas is given by an inductive definition generated by provability in a ‘base’ of atomic rules. Base-extension semantics for classical and intuitionistic propositional logic have been explored by several authors. In this paper, we develop base-extension semantics for the classical propositional modal systems $K$, $KT$, $K4$ and $S4$, with $\square $ as the primary modal operator. We establish appropriate soundness and completeness theorems and establish the duality between $\square $ and a natural presentation of $\lozenge $. We also show that our semantics is in its current form not complete with respect to euclidean modal logics. Our formulation makes essential use of relational structures on bases.

The roots of polarization in the individual reward system.

Polarization raises concerns for democracy and society, which have expanded in the internet era where (mis)information has become ubiquitous, its transmission faster than ever, and the freedom and means of opinion expressions are expanding. The origin of polarization however remains unclear, with multiple social and emotional factors and individual reasoning biases likely to explain its current forms. In the present work, we adopt a principled approach and show that polarization tendencies can take root in biased reward processing of new information in favour of choice confirmatory evidence. Through agent-based simulations, we show that confirmation bias in individual learning is an independent mechanism and could be sufficient for creating polarization at group level independently of any additional assumptions about the opinions themselves, a priori beliefs about them, information transmission mechanisms or the structure of social relationship between individuals. This generative process can interact with polarization mechanisms described elsewhere, but constitutes an entrenched biological tendency that helps explain the extraordinary resilience of polarization against mitigating efforts such as dramatic informational change in the environment.

Numerical Studies Fatigue Damage From Material Variations Catenary Mooring System FPSO Al Zaafarana

When operating, the FPSO receives environmental loads in the form of currents, wind and waves so mooring ropes are required (mooring line). Mooring line is a way to dampen the movement of the Al Zaafarana FPSO which allows it to move freely in the direction of the load. However, several cases of mooring rope accidents occurred including material fatigue of 20%, deployment 17%, and corrosion 11%. So the aim of this research is to analyze motion trajectory (surge and sway), mooring line stress, and deterministic fatigue on mooring line so you get it fatigue damage material catenary mooring line for FPSO Al Zaafarana. Thus, it is hoped that this research can make a scientific contribution in improving the quality and safety of materials mooring line for the Al Zaafarana FPSO, as well as increasing the efficiency of the oil drilling process. This research method uses a numerical study approach as a secondary data source with modeling and simulation using software as well as literature analysis that will support the numerical simulation results. From the results of numerical studies obtained fatigue damage The highest is the material type chain for FPSO Al Zaafarana. One of the reasons is that the mass of the rope is not proportional to the displacement of the ship, so a larger mass of rope is needed or an increase in the number of ropes. In addition, the numerical study simulation only uses 100 seconds so that the movement process only reaches movement transient namely temporary changes that occur in the transition phase before reaching a stable condition.

Whose Right Is Right? The Dialectics of Remedial Secession and Territorial Sovereignty in the Cameroon Anglophone Crisis

The Cameroon Anglophone crisis which began as a protest by Teachers and Lawyers trade unions toward the end of 2016 has evolved into an intractable conflict that threatens to dismember the West African nation. Most scholarly literature on the conflict so far has been focused on the origins, causes and possible remedies. Very few have touched on its theoretical underpinnings. This paper explores the theoretical foundation one which both parties in the conflict have premised their struggle or counter-struggle. It examines the Cameroon Anglophone crisis through the lenses of a conflict between “Remedial secession” on the one hand and “Territorial sovereignty” on the other. Both of the aforementioned concepts are fundamental to understanding the context and motivation of both sides and the main bone of contention that animates this conflict. The paper argues both international law and empirical evidences in their current form lend more credence to claims of territorial sovereignty than remedial secession. It lays out conditions under which the threshold for remedial secession can be attained.

Plastic borders: on the photographic frame and its virtual experience

During the last decade, a number of media theorists have defended the idea that photography, through its new computational and networked existence, is progressively losing its representational identity. While it is evident that the computational materiality of networked photographs has turned most distributed images into data generating assets, the way most photographs continue to operate in our society suggests that the specificity of the medium remains practically unaltered since modernist times. In an age where immersive virtual worlds will soon dominate our online interactions, this paper discusses the current forms and uses of photography within the emerging virtual spaces. Through practice-led, experimental research on the use of virtual cameras to record immersive, lived experiences, and the analysis of recent works produced by the so-called virtual photographers documenting their gaming interactions, this study investigates the value of the photographic frame as a still, two-dimensional representation, while questioning its function within extended reality environments.

Earthen stories. Cross-craft strategies in raw material procurement and production at the tell site of Arslantepe (Türkiye) during the 4th millennium BCE

Arslantepe, located in south-eastern Turkey, is a multi-period settlement with a rich history of habitation dating back to at least the late 5th millennium BCE and spanning into the Medieval period. Over millennia, the site underwent drastic cultural, socio-economic and political transformations, resulting in its current form as a 30-m-high artificial mound. This mound predominantly consists of earth, encompassing clay-based construction materials, assorted objects and discarded materials. This paper consolidates research on various earthen objects and fixtures from the site, investigating their material properties through X-ray Diffraction (XRD), X-ray Fluorescence (XRF), sediment micromorphology and ceramic petrography. The focus is on characterising the diverse earthen products as well as assessing differences and similarities in the procurement and manipulation of raw materials during the Late Chalcolithic period. Earth emerged as a pivotal resource for Arslantepe communities, showcasing diverse strategies of collection, manipulation and utilisation-a compelling example of cross-crafting strategies. The findings reveal a multifaceted body of knowledge intertwined with the exploitation of this resource, emphasising distinct technological expertise, environmental considerations, as well as cultural preferences and socio-economic factors. Ultimately, the integrated examination of cross-craft strategies in the 4th millennium BCE Arslantepe settlement provides a unique glimpse into communities of practice and social networks centred around the utilisation of earth, contributing to a deeper understanding of past societies.

Evaluation of an SMS Based Alcohol Intervention for Same Sex Attracted Women: A Randomized Controlled Trial to Examine Feasibility, Acceptability, and Efficacy

Purpose The purpose of this randomized controlled trial (Trial registration ID: redacted) was to examine the feasibility, acceptability, and efficacy of the Step One program, an SMS-based alcohol intervention for same-sex attracted women (SSAW). Methods Ninety-seven SSAW who scored ≥8 on the Alcohol Use Disorders Identification Test (AUDIT) were randomly allocated to receive the Step One program (n = 47; mean age = 36.79) or a weekly message containing a link to a website with health information and support services for LGBT individuals (n = 50; mean age = 34.08). Participants completed questionnaires on alcohol use, wellbeing, and help-seeking at baseline (T1), intervention completion (T2; 4 wk after baseline) and 12 wk post-intervention (T3). In addition, participants in the intervention condition completed feasibility and accessibility measures at T2, and a subsample (n = 10) was interviewed about acceptability at T3. Results Across conditions, participants significantly reduced their alcohol intake and improved their wellbeing and help-seeking over time. However, there were no significant differences between the intervention and control condition. Furthermore, frequency of help-seeking was low; only four intervention group participants and three control group participants began accessing support between T1 and T3. Overall, our findings indicate the intervention would benefit from revision prior to implementation. Conclusions Our approach was consistent with best practice in the development of an ecologically valid intervention; however, this intervention, in its current form, lacks the complexity desired by its users to optimally facilitate alcohol reduction among SSAW. Keywords: Alcohol intervention; Intervention mapping framework; Randomized controlled trial (RCT); Same-sex attracted women; Short-message service (SMS).

The overview of social security reforms between the 90's and 2000

The present study aims to study the successive and debatable reforms that the Brazilian Social Security system has undergone since its formatting in its current form and constitutionalization, concluding that despite the variety of speeches in favor and against the 2019 Social Security Reform, it is It is possible to observe that all political parties that assumed the Executive Branch of the Federal Government imposed reforms or changes to the social protection system. It will be analyzed whether the social protection system really needs the reforms introduced. To achieve the intended objective, the methodology applied is the theoretical review of Social State theories.

Inflammatory and neutrophil activation markers in Behcet's disease

Behcet's disease (BD) is a systemic vasculitis characterized by recurrent episodes of inflammation with aphthous stomatitis, genital ulcers, skin, joint and internal organ involvement. Currently, there are no reliable laboratory markers that can be used to monitor BD activity. Erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) have low sensitivity, so the search for new biomarkers continues. Neutrophil reactivity intensity (NEUT-RI), neutrophil granularity intensity (NEUT-GI), immature granulocytes (IG), neutrophil-to-lymphocyte ratio (NLR), systemic immune inflammation index (SII) are new inflammatory indicators whose role in BD is not well studied.Objective: to evaluate and compare the efficacy of the determination of NEUT-RI, NEUT-GI, IG, SII, NLR, ESR and CRP in the diagnosis of active BD.Material and methods. 84 patients with a reliable diagnosis of BD and 38 healthy controls were included in the study. BD activity was assessed using the Behcet’s Disease Current Activity Form (BDCAF). Patients with BD were divided into two groups according to activity: Group I included 41 patients with high activity (BDCAF >5) and Group II included 43 patients with low activity (BDCAF ≤5). A complete blood count with determination of NEUT-RI, NEUT-GI, IG, SII and NLR was performed in all patients and healthy donors using the Sysmex XN 1000 automated haematology analyzer (Sysmex Сorp, Japan). ESR was determined using the Westergren method. High-sensitivity serum CRP level was determined in all patients with BD (normal range ≤5) by immunonephelometric method.Results and discussion. Patients with active BD had significantly higher levels of neutrophils, SII, NLR, NEUT-RI, IG, ESR and CRP compared to patients with low disease activity. ROC analysis was performed to compare the significance of these inflammatory markers in the assessment of BD activity. The SII had the largest area under the ROC curve (AUC =0.816). The sensitivity and specificity of the SII at a value of 509.75 or higher for determining the active form of BD were 79.4% and 71.8%, respectively.Conclusion. The new inflammatory parameters (SII, NLR, NEUT-RI and IG) and the traditional inflammatory parameters (ESR, CRP, neutrophils) can serve as laboratory markers for BD activity. SII is the most informative parameter to determine BD activity with optimal sensitivity and specificity.

The Virtual Reality Radiology Workstation: Current Technology and Future Applications.

Virtual reality (VR) and augmented reality (AR) technology hold potential across many disciplines in medicine to expand the delivery of education and healthcare. VR-AR applications in radiology, in particular, have gained prominence and have demonstrated advantages in many areas within the field. Recently, VR software has emerged to redesign the physical radiology workstation (ie, reading room) to expand the possibilities of diagnostic interpretation. Given the novelty of this technology, there is limited research investigating the potential applications of a simulated radiology workstation. In this review article, we explore VR-simulated reading room technology in its current form and illustrate the practical applications this technology will bring to future radiologists and learners. We also discuss the limitations and barriers to adopting this technology that must be overcome to truly understand its potential benefits. VR reading room technology offers great potential in radiology, but further research is needed to appreciate its benefits and identify areas for improvement. The findings and insights presented in this review contribute to the ongoing discourse on future technological advancements in radiology and healthcare, offering valuable recommendations for further research and practical implementation.

Reflections on the ABC model of flower development.

The formulation of the ABC model by a handful of pioneer plant developmental geneticists was a seminal event in the quest to answer a seemingly simple question: how are flowers formed? Fast forward 30 years and this elegant model has generated a vibrant and diverse community, capturing the imagination of developmental and evolutionary biologists, structuralists, biochemists and molecular biologists alike. Together they have managed to solve many floral mysteries, uncovering the regulatory processes that generate the characteristic spatio-temporal expression patterns of floral homeotic genes, elucidating some of the mechanisms allowing ABC genes to specify distinct organ identities, revealing how evolution tinkers with the ABC to generate morphological diversity and even shining a light on the origins of the floral gene regulatory network itself. Here we retrace the history of the ABC model, from its genesis to its current form, highlighting specific milestones along the way before drawing attention to some of the unsolved riddles still hidden in the floral alphabet.

Fractal calculus in tumor growth simulations: The proof is in the pudding

Mathematical modeling in oncology has a long history. Recently, mathematical models and their predictions have made inroads into prospective clinical trials with encouraging results. The goal of many such modeling efforts is to make predictions, either to clinician's choice therapy or into “optimal” therapy – often for individual patients. The mathematical oncology community rightfully puts great hope into predictive modeling and mechanistic digital twins – but with this great opportunity comes great responsibility. Mathematical models need to be rigorously calibrated and validated, and their predictive performance ascertained, before conclusions about predictions into the unknown can be drawn. The recent article “Modeling tumor growth using fractal calculus: Insights into tumor dynamics” (Golmankhaneh et al., 2023), applied fractal calculus to tumor growth data. In this short commentary, I raise concerns about the study design and interpretation. In its current form, this study is poised to put cancer patients at risk if interpreted as concluded by the authors.

Functional coupling between auditory memory and verbal transformations

The ability to parse sound mixtures into coherent auditory objects is fundamental to cognitive functions, such as speech comprehension and language acquisition. Yet, we still lack a clear understanding of how auditory objects are formed. To address this question, we studied a speech-specific case of perceptual multistability, called verbal transformations (VTs), in which a variety of verbal forms is induced by continuous repetition of a physically unchanging word. Here, we investigated the degree to which auditory memory through sensory adaptation influences VTs. Specifically, we hypothesized that when memory persistence is longer, participants are able to retain the current verbal form longer, resulting in sensory adaptation, which in turn, affects auditory perception. Participants performed VT and auditory memory tasks on different days. In the VT task, Japanese participants continuously reported their perception while listening to a Japanese word (2- or 3-mora in length) played repeatedly for 5 min. In the auditory memory task, a different sequence of three morae, e.g., /ka/, /hi/, and /su/, was presented to each ear simultaneously. After some period (0–4 s), participants were visually cued to recall one of the sequences, i.e., in the left or right ear. We found that delayed recall accuracy was negatively correlated with the number of VTs, particularly under 2-mora conditions. This suggests that memory persistence is important for formation and selection of perceptual objects.

Improving the fire weather index system for peatlands using peat-specific hydrological input data

Abstract. The Canadian Fire Weather Index (FWI) system, even though originally developed and calibrated for an upland Jack pine forest, is used globally to estimate fire danger for any fire environment. However, for some environments, such as peatlands, the applicability of the FWI in its current form, is often questioned. In this study, we replaced the original moisture codes of the FWI with hydrological estimates resulting from the assimilation of satellite-based L-band passive microwave observations into a peatland-specific land surface model. In a conservative approach that maintains the integrity of the original FWI structure, the distributions of the hydrological estimates were first matched to those of the corresponding original moisture codes before replacement. The resulting adapted FWI, hereafter called FWIpeat, was evaluated using satellite-based information on fire presence over boreal peatlands from 2010 through 2018. Adapting the FWI with model- and satellite-based hydrological information was found to be beneficial in estimating fire danger, especially when replacing the deeper moisture codes of the FWI. For late-season fires, further adaptations of the fine fuel moisture code show even more improvement due to the fact that late-season fires are more hydrologically driven. The proposed FWIpeat should enable improved monitoring of fire risk in boreal peatlands.