Negative Characteristics Research Articles

WSe2 Negative Capacitance Field-Effect Transistor for Biosensing Applications.

Field-effect transistor (FET) biosensors based on two-dimensional (2D) materials are highly sought after for their high sensitivity, label-free detection, fast response, and ease of on-chip integration. However, the subthreshold swing (SS) of FETs is constrained by the Boltzmann limit and cannot fall below 60 mV/dec, hindering sensor sensitivity enhancement. Additionally, the gate-leakage current of 2D material biosensors in liquid environments significantly increases, adversely affecting the detection accuracy and stability. Based on the principle of negative capacitance, this paper presents for the first time a two-dimensional material WSe2 negative capacitance field-effect transistor (NCFET) with a minimum subthreshold swing of 56 mV/dec in aqueous solution. The NCFET shows a significantly improved biosensor function. The pH detection sensitivity of the NCFET biosensor reaches 994 pH-1, nearly an order of magnitude higher than that of the traditional two-dimensional WSe2 FET biosensor. The Al2O3/HfZrO (HZO) bilayer dielectric in the NCFET not only contributes to negative capacitance characteristics in solution but also significantly reduces the leakage in solution. Utilizing an enzyme catalysis method, the WSe2 NCFET biosensor demonstrates a specific detection of glucose molecules, achieving a high sensitivity of 4800 A/A in a 5 mM glucose solution and a low detection limit (10-9 M). Further experiments also exhibit the ability of the biosensor to detect glucose in sweat.

High-performance negative differential resistance characteristics in homoepitaxial AlN/GaN double-barrier resonant tunneling diodes

In this work, high-performance negative differential resistance (NDR) characteristics are demonstrated in homoepitaxial AlN/GaN double-barrier resonant tunneling diodes (RTDs). The devices are grown by plasma-assisted MBE on bulk GaN substrates and exhibit robust and repeatable NDR at RT. A high peak current density of 183 kA cm−2 is simultaneously demonstrated with a large peak-to-valley current ratio of 2.07, mainly benefiting from the significantly reduced dislocation density and improved hyper-abrupt heterointerfaces in the active region, which boosts the electron quantum transport in the resonant tunneling cavity. The achievement shows the promising potential to enhance the oscillation frequency and output power of GaN-based RTD oscillators, imperative for next-generation high-power solid-state compact terahertz oscillators application.

Additional damping control for multi-terminal AC-DC hybrid system based on reachability analysis

Abstract The application proportion of multi-terminal AC-DC hybrid power distribution systems is constantly increasing. In order to describe the operation status and trajectory of the system and judge whether the system can maintain stable and safe operation, in this paper, the differential algebraic equation is firstly established by mathematical and physical methods for a typical multi-terminal AC-DC hybrid power distribution system. Then, the reachable set in the operation process is analyzed according to the reachability analysis calculation method to judge the stable operation status. An additional damping control method is proposed, which can effectively restrain the negative impedance characteristics of the DC micro-grid and improve the operation stability of the system. Finally, the improvement performance of the control method is verified by combining the reachability analysis results.

Cushioning performance of origami negative poisson's ratio honeycomb steel structure

The honeycomb structure with a negative Poisson's ratio, inspired by the Miura origami unit, exhibits three-dimensional negative Poisson's ratio characteristics and effective energy dissipation performance. This unique property provides significant potential in the field of protection applications. This study aims to comprehensively understand the impact of auxetic and origami structures on the cushioning performance of honeycomb structures. For this purpose, 316 L stainless steel specimens were fabricated using 3D printing technology and subjected to drop hammer impact tests, and the results were verified by finite element simulation. This paper focuses on assessing the deformation mode and energy dissipation performance of origami auxetic honeycomb structures with varying width-to-thickness ratios and folding angles under different impact energy levels. The results indicate that the negative Poisson's ratio origami specimens exhibit higher plateau stress and specific energy absorption compared to their positive and zero Poisson's ratio origami counterparts with the same geometry. In addition, a smaller width-to-thickness ratio and higher input impact energy enhance the cushioning performance of honeycomb structures.

Patterns of environmental regulation and green innovation in China

Green technology innovation is an important means to achieve sustainable development. The study is an exploration of the bilateral perspective on the relationship between different types of environmental regulations and green innovation. Based on the data set of 30 provinces in China from 2006 to 2018, the two-sided effects of command-and-control environmental regulation and market-based environmental regulation on green innovation are analysed and the net effects are calculated by using the two-tier stochastic frontier models. First, empirical research shows that the effects of command-and-control environmental regulation and market-based environmental regulation on green innovation are both highlighted by negative characteristics. Command-and-control environmental regulation has a smaller effect on green innovation, with an average positive effect of 0.00005, which is smaller than the average negative effect of 0.0008. Meanwhile, the positive effect of market-based environmental regulation on green innovation is 0.00291, smaller than the negative effect of 0.00461. Second, the negative impact of command-and-control environmental regulation on green innovation underwent a "back-to-N" change process in 2006–2018, while the negative effect of market-based environmental regulation on green innovation did not decline until after 2011. Third, the provinces where command-and-control environmental regulation policies have a greater negative effect are concentrated in the energy-intensive regions of central and western China, while the provinces where market-based environmental regulation policies can promote green innovation are from the energy-intensive or developed eastern regions of China. Based on the research conclusions, to better promote green innovation, there is a need to implement environmental regulatory policies that address regional differences and to establish a national system of green innovation markets.

Changing for the worse: The effects of attachment anxiety on perceived self-adulteration

In romantic relationships, people’s self-concepts (i.e., a person’s conceptualization of themselves) change. They expand to incorporate partners’ characteristics and contract to eliminate no longer relevant self-characteristics. This process is a sign that a couple is growing closer and is associated with positive outcomes. However, not all incorporated characteristics are positive. Some individuals are more likely to have selves that expand to incorporate negative characteristics, and as such they engage in the process of self-adulteration. As a result, they may fail to reap the positive outcomes of self-concept change. In one study and a direct replication (total N = 821), we predicted and found that people high in attachment anxiety are more likely to perceive greater self-adulteration in their relationship. In a third longitudinal study ( N = 122), we found people high in attachment anxiety at Time 1 perceived greater self-adulteration at Time 2.

Handles with Reentrant Cells for Use as Oar Handles: Design Considerations, Physical Characteristics, and End‐Users’ Perceptions

Rowing is a sport that requires athletes to perform the action of pulling and rotating an oar by hand, applying forces of considerable magnitude. Herein, inspired by the notion that auxetic materials and metamaterials behave differently compared to their conventional counterparts, it is examined how a handle prototype, specifically designed to incorporate the classic re‐entrant motif, behaves and how end‐users perceive it. Physical experiments conducted on such prototype, which measured the contact pressures, suggest that on average, higher pressures are measured when pulling with this reentrant grip compared to its non reentrant counterpart, indicating that this re‐entrant prototype should feel firmer. More importantly, respondents of a survey are asked to give their feedback, and different views on which handle they would prefer to use are provided. The ones who preferred the prototype with the reentrant features report that they preferred it because it felt firmer and allowed for a better grip. This suggests that there is potential for further investigation into whether handles, oar handles in particular, made from auxetic components, re‐entrant cells, or other motifs which are well known for their negative Poisson's ratio characteristics, could provide a better and more secure grip and be used in sports applications.

A quasi-harmonic voltage compensation control of current-controlled battery energy storage systems for suppressing mid-frequency oscillations and harmonics

In grid-connected mode, current-controlled battery energy storage systems (BESS) face the issues of harmonic caused by nonlinear loads and interactive instability under weak grids. Firstly, the mechanisms of mid-frequency oscillations (MFO) and mid-frequency harmonics (MFH) are revealed by the impedance network theory and the circuit principle. Because harmonic currents of nonlinear loads tend to interact with the mid-frequency impedance of BESS to produce harmonic voltage drops, the grid is susceptible to MFH. Worse still, the grid-connected system based on BESS tends to exhibit negative damping characteristics in the mid-frequency band as the grid stiffness decreases, which triggers MFO. Aiming at the above problems, this paper proposes a quasi-harmonic voltage compensation control strategy without any harmonic extractor and provides a detailed parameter design rule. The proposed control strategy can effectively suppress MFO by enhancing the damping between BESS and weak grids. Meanwhile, the disturbance resistance of BESS to nonlinear loads is significantly improved because the impedance magnitude of BESS in the mid-frequency band is obviously reduced. Finally, the effectiveness of the proposed strategy is verified by simulation and experiment.

Stigma of Binge-Eating Disorder in Hong Kong Chinese Adults: Effects of Weight Status, Diagnostic Labeling, and Etiological Explanations.

Binge-eating disorder (BED) is a strongly stigmatized condition and is often complicated by weight stigma. Research on the intersection between BED and weight stigma is scarce especially in Chinese populations. The present study examined BED stigma in Chinese, whether BED stigma was independent from weight stigma, and whether diagnostic labeling and etiological explanations influenced the degree of BED stigma. Using a between-subject experimental vignette study, 642 participants (mean age = 29.74 years, SD = 11.34) were randomly assigned to read one of the 18 vignettes, describing a character with information on BED symptoms, weight status, diagnostic labeling, and etiological explanations, followed by measures of stigma and help-seeking intentions. The character with BED symptoms was ascribed more negative personality characteristics, elicited more negative affective reactions, and triggered greater desired social distance compared to the character without BED symptoms. No evidence for weight stigma was found nor for its interaction with BED stigma. The Cantonese diagnostic label of BED, kwong sik zing, was associated with lower levels of volitional stigma and greater help-seeking intentions than the diagnostic label of eating disorders, jam sik sat tiu, and the absence of labeling. The effect of etiological explanations was only significant in the univariate test, indicating that providing either a psychosocial or a biogenetic etiological explanation lessened the negative evaluations of personality characteristics. The present study provided first evidence for BED stigma in Chinese. BED stigma appeared to be attributable to the presence of disordered eating behavior rather than the BED diagnosis.

Temperature dependent Raman spectroscopy and sensing performance of 2D black phosphorus.

Temperature is an important parameter to be monitored in new wearable electronic devices. Layered black phosphorus (BP) has inherent good thermal stability and semiconductor properties and has a promising application as a temperature sensing layer. Here, we investigate the temperature sensing properties of BP, using in situ Raman spectroscopy and x-ray diffraction techniques. Flexible sensors are constructed, and temperature response is investigated in the range of 6-38 °C. The prospect application for monitoring the temperature of human body parts is demonstrated. The results show that the BP-based temperature sensors demonstrate good negative temperature coefficient characteristics and display high sensitivity and reproducible sensing performance. The temperature-dependent performance suggests the feasibility of BP as a sensitive layer in a wide temperature range. This work paves the way for exploring new applications of amazing layered materials, such as BP, in wearable electronic devices.

A systematic review on the role of therapist characteristics in the treatment of eating disorders.

Treating patients with eating disorders can be challenging for therapists, as it requires the establishment of a strong therapeutic relationship. According to the literature, therapist characteristics may influence intervention outcomes. The aim of this systematic review was to identify and synthesize existing literature on therapist interpersonal characteristics that could affect psychotherapy relationship or outcomes in the context of eating disorder treatment from both patients' and therapists' perspectives. We conducted a systematic search using electronic databases and included both qualitative and quantitative studies from 1980 until July 2023. Out of the 1230 studies screened, 38 papers met the inclusion criteria and were included in the systematic review. The results indicate that patients reported therapist's warmth, empathic understanding, a supportive attitude, expertise in eating disorders, and self-disclosure as positive characteristics. Conversely, a lack of empathy, a judgmental attitude, and insufficient expertise were reported as therapist negative characteristics, which could have a detrimental impact on treatment outcome. Few studies have reported therapist's perceptions of their own personal characteristics which could have an impact on treatment. Therapists reported that empathy and supportiveness, optimism, and previous eating disorder experience were positive characteristics. Conversely, clinician anxiety, a judgmental attitude, and a lack of objectivity were reported as negative characteristics that therapists felt could hinder treatment. This systematic review offers initial evidence on the personal characteristics of therapists that may affect the treatment process and outcomes when working with patients with eating disorders.

The simultaneous impact of interventions on optimism and depression: A meta‐analysis

AbstractThe positive psychology approach to mental‐health‐related interventions suggests that a dual focus on positive and problematic characteristics is beneficial and that positive and negative characteristics interact. The present study explored the link between optimism and depression outcomes in intervention studies that assessed both optimism and depression outcomes. A meta‐analysis examined effect sizes for depression and optimism and links between depression and optimism outcomes. Eighteen studies with a total of 2153 participants were included. Across studies the weighted effect sizes for the impact of interventions on both depression (g = 0.46) and optimism (g = 0.38) were significant. Optimism and depression outcomes were associated with one another (r(17) = 0.58). Meta‐regression analyses also indicated linkages between the two outcomes in that the optimism effect sizes moderated depression effect sizes and depression effect sizes moderated optimism effect sizes. The results of the study lend support to a dual focus on positive and problematic characteristics.

Erasmus Batavus: The Auris Batava (1508) Between Ancient Heritage and Italian Disdain

ABSTRACT A 1508 adage by Erasmus about the Batavian ear is often interpreted as an expression of nationalism. Serious doubts can be raised against such interpretations since there was no such thing as nationalism in the early sixteenth century. Besides this, the interpretation is inconsistent with Erasmus’s degenerative expressions about Batavians and Hollanders elsewhere; nor does the adage describe the Batavians or Hollanders in a truly positive way. I propose an alternative to the nationalistic interpretation of the adage. Based on the Auris Batava, his correspondence, and the rest of his broad oeuvre, I argue that the references to Batavians throughout Erasmus’s works are instead a response to humanist Italy, where a negative stereotype of Northerners was prevalent and where one prided oneself on an ancient lineage. Born in Rotterdam, Erasmus could not appropriate this ancient Roman heritage and therefore took recourse to the Batavians. He appropriated biases against the supposed negative characteristics of the Northerners and Batavians as well, but used these to emphasize his own achievements. Erasmus’s establishment of a Batavian identity can thus be deemed a form of Erasmian modesty, a type of rhetoric that is evident more broadly in his oeuvre.

First impressions: Do faces with scars and palsies influence warmth, competence and humanization?

A glance is enough to assign psychological attributes to others. Attractiveness is associated with positive attributes ('beauty-is-good' stereotype). Here, we raise the question of a similar but negative bias. Are people with facial anomalies associated with negative personal characteristics? We hypothesized that biases against faces with anomalies arise because of negative stereotypes (less warmth and competence) and forms of dehumanization (animalistic and mechanistic). We enrolled 1493 mTurk participants (N = 1306 after exclusion) to assess 31 traits of photographed people using 60 pairs of photographs of the same person before and after plastic surgery. Half anomalous faces had a scar and the other half had a palsy. To calculate warmth and competence, we conducted a principal components analysis of the 31 attributes. Animalistic dehumanization was assessed by averaging reverse-scored ratings corresponding to moral sensibility and rationality/logic, and mechanistic dehumanization by averaging across reverse-scored ratings corresponding to emotional responsiveness and interpersonal warmth. We found that both kinds of anomalous faces were seen as less warm, competent and were dehumanized. Our findings suggest that an 'anomalous-is-bad' stereotype generalizes regardless of the aetiology of the anomaly. This effect may be related to a reverse halo effect, that is, the horn effect.

Ionization processes of negative corona discharge. Part 2. Theory. Comparison with experiment

The purpose of the research is a theoretical analysis of ionization processes in the air, which are initiated by a high-voltage field generated by the negative needle-flat electrode electrode system. Methods. Fe, Cu, Al electrodes are used. Calculations are carried out using the methods of quantum mechanics and mathematical physics. Results. The processes of cold and thermoelectron emission of electrons, enhanced by an external high-voltage field (Schottky emission), are analyzed. The conditions under which the generation of charges from the cathode surface due to plasma-chemical reactions and the capture of surface electrons by electronegative oxygen molecules are decisive are investigated. Based on the PE theory, a theory of injection of negative ions from the cathode into an electronegative gas is constructed and the theory is compared with experiment. It has been shown that at small radii of curvature of needle tips, when E ≥ 106 V/cm, the generation of charges is due to cold emission of electrons. In average fields E ≈ 105 V/cm, electron emission is due to the Schottky effect. In fields E ≈ 104 V/cm and below, injection is caused by electrochemical processes and PE capture. A theory has been developed for PEs that appear at electric field intensities on the electrode of the order of several tens of kV/cm, that is, on flat and slightly curved negative electrodes. The capture of PE by electron-withdrawing molecules causes an injection current and, as a consequence, the ignition of a corona discharge. Analytical expressions for the surface density as a function of the local electric field strength, as well as an expression for the injection current, are obtained. The agreement between theory and experiment is satisfactory. Conclusion. An analysis of the development of CR on negative needles is given. A theory of PE at the cathode in strong electric fields was developed. Based on the results of measuring dark negative current-voltage characteristics, it is possible to determine the patterns of surface processes involving electronic transitions, in particular, determine the concentration of PE and injection currents.

HISTORICAL ANALYSIS OF SPECIES AND COLOR IN ANTHROPOCENTRIC PROVERBS

The world around us is always colored in one way or another, and then, of course, we need to use terms to define color. The dictionary of any language always contains a limited number of color names (usually 100-150). In this case, the human eye can distinguish several times more colors (up to 100,000 shades). Color is of great importance in the life of a modern person. Often, people’s mood, emotions, and even physical well-being directly depend on this. This explains why research in the field of color is so popular among psychologists. However, when considering certain aspects, experts often overlook the deep historical and cultural experience of a person who constantly strives to name the objects and phenomena that surround him. This article examines the conceptual features of flowers in proverbs and sayings. The article examines from a historical point of view the poetic features of anthropocentric proverbs with black and white colors and concludes that they form the basis of a stable antonymy that helps to understand the features of the artistic image of the world, as well as clarify philosophical and aesthetic points of view. The relevance of the study lies in the fact that black and white colors are little studied in proverbs and sayings. To continue and complement these studies, the authors focus on the color palette of proverbs when conducting the study. The color scheme is ideological and thematic, attracts characteristic sharp contrasts, and most importantly performs certain functions. It is proved that the values «black» and «white» can have both positive and negative characteristics.

Children With Cerebral Palsy And Family Functioning In Greece And Italy

ABSTRACT Cerebral palsy (CP) is a serious disorder that affects a person’s life, their parents, and the entire family. CP’s impact on the family is long term, complex, and multifactorial. This study explored family functioning in families raising children with CP in Greece and Italy. A total of 120 married parents participated in the study: 60 mothers and 60 fathers who had biological children with CP. All families were nuclear. A self-report questionnaire, a semi-structured interview, and the Family Adaptability and Cohesion Evaluation Scale (FACES-III) were used for data collection. Results highlighted that parents had a different comprehension of CP, presenting a variety of positive and negative family characteristics. The existence of CP in families was reported primarily as a full and ongoing engagement. Parents, in both countries, perceived the real and ideal functioning of their families as balanced. This represents healthy family functioning, according to the revised edition of the Olson Circumplex Model. Findings suggested parents had distinct notions about CP and a variety of views on family functioning, which were estimated to be functional.

Коммуникативная трансформация образа России в недружественных СМИ в контексте современных межцивилизационных обострений

The article examines the transformation of the communicative image of Russia in the British media in the context of a special military operation in Ukraine. The scientific problem lies in the fact that in the conditions of the global information space, the communicative dialogue of states is carried out not only through factual information, but also through the prism of the linguistic features of a particular civilization, through which a negative image is built. Based on a comprehensive linguistic analysis key trends and means of constructing a negative image of Russia have been identified. The research methodology includes content analysis, which made it possible to determine the most frequent contexts of the use of the lexeme "Russia", and critical discourse analysis aimed at identifying the deep meanings and ideological attitudes behind specific language forms. The results show that the lexical and semantic level is dominated by militaristic discourse At the level of rhetoric and stylistics, negatively colored metaphors play a key role. At the syntactic level, attention is drawn to the abundance of parallel constructions that escalate the series of negative characteristics of Russia. It is concluded that the communicative image of Russia in the British media is undergoing a radical negative transformation.

СРАВНЕНИЕ КАК СПОСОБ СОЗДАНИЯ КОМИЧЕСКОГО ОБРАЗА ПОЛИТИКА В АМЕРИКАНСКИХ СМИ (НА МАТЕРИАЛЕ АМЕРИКАНСКИХ НОВОСТНЫХ СТАТЕЙ)

The relevance of the article is due, on the one hand, to the interest of linguists in the study of linguistic means and techniques of creating the comic in the media discourse, and, on the other, to the insufficient knowledge of comparison as a way of creating comic images of politicians. The paper identifies the types of comparative constructions involved in the creation of negative images of American politicians, classifies the objects of comparison and identifies the reasons for choosing these objects, which serve as a way of accentuating the negative characteristics of politicians.

Spatiotemporal dynamics and influencing factors of CO2 emissions under regional collaboration: Evidence from the Beijing-Tianjin-Hebei region in China

Against the backdrop of global climate change and the “dual carbon” target, cities have a significant responsibility to achieve carbon reduction targets. As a crucial urban agglomeration in northern China, effectively balancing economic growth with CO2 emission reduction to achieve high-quality economic development remains a significant challenge that the Beijing-Tianjin-Hebei region should address both presently and in the future. The objective of this study is to utilize nighttime lighting data and energy consumption information to quantify the CO2 emissions of diverse cities within the Beijing-Tianjin-Hebei region spanning from 2006 to 2020. The research aims to analyze the spatial progression patterns of CO2 emissions across these urban centers, identify key determinants and their interrelations, and delve into the underlying mechanisms pivotal for advancing carbon mitigation strategies within urban agglomerations. The results indicate that: with an exception in Beijing where CO2 emissions slightly decreased compared to 2006, CO2 emissions increased across cities in the Beijing-Tianjin-Hebei region by 2020. High-value CO2 emission areas are primarily concentrated in central of the study area, exhibiting negative spatial correlation characteristics. Based on its urban development positioning, it is imperative for the Beijing-Tianjin-Hebei urban agglomeration to formulate and implement carbon reduction strategies on innovative development, industrial upgrading, and ecological protection among other aspects towards coordinated low-carbon development.