Spin frustration and magnetic ordering in triangular lattice antiferromagnet Ca_3CoNb_2O_9

We synthesized a quasi-two-dimensional distorted triangular lattice antiferromagnet Ca3CoNb2O9, in which the effective spin of Co2＋is 1/2 at low temperatures, whose magnetic properties were studied by dc susceptibility and magnetization techniques. The x-ray diffraction confirms the quality of our powder samples. The large Weiss constant θCW --55 K and the low Neel temperature TN- 1.45 K give a frustration factor f =｜ θCW/TN｜≈ 38, suggesting that Ca3 Co Nb2O9resides in strong frustration regime. Slightly below TN, deviation between the susceptibility data under zero-field cooling（ZFC）and field cooling（FC） is observed. A new magnetic state with 1/3 of the saturate magnetization Ms is suggested in the magnetization curve at 0.46 K. Our study indicates that Ca3 Co Nb2O9is an interesting material to investigate magnetism in triangular lattice antiferromagnets with weak anisotropy.

Effects of Doping on the Magnetic Properties and Frustration of Hexagonal YMn0.9A0.1O3（A=Al,Fe,and Cu）

The doping effects on the frustration and the magnetic properties in hexagonal compounds ot YMn0.9A0.1O3 （A=A1, Fe and Cu） are investigated. Experimental results indicate that both the non-magnetic and magnetic ion dopants lead to the increase of magnetic moments and the decrease of the absolute value of Curie-Weiss temperature （｜θcw｜）- Compared with pure YMnOa, the geometrical frustration of YMn0.9 A0. 1O3 is greatly suppressed and the magnetic coupling in that exhibits dopant-dependent. In addition, for the doped YMno.gAo.103, the antiferromagnetic transition temperature （TN） is also suppressed slightly, which shows an abnormal dilution effect and it may be ascribed to the reduction of frustration due to the chemical substitution.

Morphine attenuates frustration-like behavior induced by sucrose reward deprivation in rats

In this study, a T-maze-based frustration model in rats was established using sucrose-reward deprivation, The results revealed that rats maintained a 75% preference for the sucrose-reward arm in the reward phase. During the sucrose-deprivation frustration phase, both the preference for the sucrose-deprivation arm （62.5%） and time spent waiting in the sucrose-deprivation arm decreased. Acute injection of morphine increased the preference in a dose-dependent fashion, and prolonged the waiting duration in the sucrose-deprivation arm. These findings indicate that morphine specifically inhibited the frustration response induced by sucrose reward deprivation. To further elucidate the pharmacological mechanisms involved, the opioid receptor antagonist naloxone was given to model rats prior to the injection of morphine. The results revealed that naloxone administration markedly attenuated the anti-frustration-like effects of 3 mg/kg morphine treatment. These findings suggest that morphine attenuates the frustration-like response to reward deprivation in rats through the opioid receptor.

Strong spin frustration and magnetism in kagoméantiferromagnets LnCu_(3)(OH)_(6)Br_(3)(Ln=Nd,Sm,and Eu)

To study the effects of lanthanide ions on the geometrically frustrated antiferromagnets and their magnetic properties,we grew high-quality single crystals of LnCu_(3)(OH)_(6)Br_(3)(Ln=Nd,Sm,and Eu)by hydrothermal method and studied their crystal structures and magnetic properties.The refinements of the crystal structure referred to the powder x-ray diffraction data show that LnCu_(3)(OH)_(6)Br_(3)adopt a Kapellasite-type layer structure,which is isostructural to their chlorine analogue.Magnetic susceptibilities demonstrate that LnCu_(3)(OH)_(6)Br_(3)have strong antiferromagnetic coupling and a pronounced magnetic frustration effect.Magnetization measurements indicate canted antiferromagnetic ordering of Cu^(2+)ions around 16 K within the kagoméplane and weak ferromagnetic coupling.Moreover,shoulder-like anomalies in specific heat around 16 K could be a signature of emergent of magnetic ordering.The low-temperature negative magnetization and specific heat of LnCu_(3)(OH)_(6)Br_(3)(Ln=Nd,Sm,and Eu)indicate that Ln^(3+)ions induce more exotic magnetic ground state properties.

Frustration and intermediate dimerized phase in spin ladder system

This paper studies a spin ladder model which possesses frustrating interactions. By using both the bosonization and the density matrix renormalization group techniques, it shows that the intermediate columnar dimerized phase, which exists in a narrow parameter region of the so-called ~/1 - J2 model, vanishes if the interchain frustration is weak and anisotropic. Therefore, it concludes that the frustrating interaction indeed plays an important role in producing such a phase. As a complementary to our previous investigation, it reaches a more complete picture of the quantum phase transition in the frustrated spin ladder systems.

Does the gap between health workers’expectations and the realities of implementing a performance-based financing project in Mali create frustration?

Background:Performance-Based Financing(PBF),an innovative health financing initiative,was recently implemented in Mali.PBF aims to improve quality of care by motivating health workers.The purpose of this research was to identify and understand how health workers’expectations related to their experiences of the first cycle of payment of PBF subsidies,and how this experience affected their motivation and sentiments towards the intervention.We pose the research question,“how does the process of PBF subsidies impact the motivation of health workers in Mali?”Methods:We adopted a qualitative approach using multiple case studies.We chose three district hospitals(DH 1,2 and 3)in three health districts(district 1,2 and 3)among the ten in the Koulikoro region.Our cases correspond to the three DHs.We followed the principle of data source triangulation;we used 53 semi-directive interviews conducted with health workers(to follow the principle of saturuation),field notes,and documents relating to the distribution grids of subsidies for each DH.We analyzed data in a mixed deductive and inductive manner.Results:The results show that the PBF subsidies led to health workers feeling more motivated to perform their tasks overall.Beyond financial motivation,this was primarily due to PBF allowing them to work more efficiently.However,respondents perceived a discrepancy between the efforts made and the subsidies received.The fact that their expectations were not met led to a sense of frustration and disappointment.Similarly,the way in which the subsidies were distributed and the lack of transparency in the distribution process led to feelings of unfairness among the vast majority of respondents.The results show that frustrations can build up in the early days of the intervention.Conclusion:The PBF implementation in Mali left health workers frustrated.The short overall implementation period did not allow actors to adjust their initial expectations and motivational responses,neither positive nor negative.This underlines how short-term interventions might not just lack impact,but instil negative sentiments likely to carry on into the future.

Frustration recognition from speech during game interaction using wide residual networks

Background Although frustration is a common emotional reaction while playing games,an excessive level of frustration can negatively impact a user's experience,discouraging them from further game interactions.The automatic detection of frustration can enable the development of adaptive systems that can adapt a game to a user's specific needs through real-time difficulty adjustment,thereby optimizing the player's experience and guaranteeing game success.To this end,we present a speech-based approach for the automatic detection of frustration during game interactions,a specific task that remains under explored in research.Method The experiments were performed on the Multimodal Game Frustration Database(MGFD),an audiovisual dataset-collected within the Wizard-of-Oz framework-that is specially tailored to investigate verbal and facial expressions of frustration during game interactions.We explored the performance of a variety of acoustic feature sets,including Mel-Spectrograms,Mel Frequency Cepstral Coefficients(MFCCs),and the low-dimensional knowledge-based acoustic feature set eGeMAPS.Because of the continual improvements in speech recognition tasks achieved by the use of convolutional neural networks(CNNs),unlike the MGFD baseline,which is based on the Long Short Term Memory(LSTM)architecture and Support Vector Machine(SVM)classifier-in the present work,we consider typical CNNs,including ResNet,VGG,and AlexNet.Furthermore,given the unresolved debate on the suitability of shallow and deep networks,we also examine the performance of two of the latest deep CNNs:WideResNet and EfficientNet.Results Our best result,achieved with WideResNet and Mel-Spectrogram features,increases the system performance from 58.8%unweighted average recall(UAR)to 93.1%UAR for speech-based automatic frustration recognition.

Frustration Education Among Middle school students in QingYuan:A Social Skills Development Program

The aim of this study was to evaluate the relationship between frustration education and frustration level of middle school students in a city during the 2022-2023 school year.Descriptive correlation analysis was applied to 270 students.Chi-square is a statistical tool used in the study.According to the findings,there are more women than men,and most are from rural areas.The findings suggest that understanding the significant correlation between frustration and educational assessments of social dimensions and overall frustration can provide insight into potential areas for intervention and support.While the academic and instructional dimensions may not be directly related to the level of frustration in this study,it is important to explore other factors that may be contributing to academic frustration or areas where instructional strategies could be improved.A social skills development program aims to address this problem.

Effects of frustration on explosive synchronization

In this study, we consider the emergence of explosive synchronization in scale-free networks by considering the Kuramoto model of coupled phase oscillators. The natural frequencies of oscillators are assumed to be correlated with their degrees and frustration is included in the system. This assumption can enhance or delay the explosive transition to synchronization. Interestingly, a de-synchronization phenomenon occurs and the type of phase transition is also changed. Furthermore, we provide an analytical treatment based on a star graph, which resembles that obtained in scale-free networks. Finally, a self-consistent approach is implemented to study the de-synchronization regime. Our findings have important implications for controlling synchronization in complex networks because frustration is a controllable parameter in experiments and a discontinuous abrupt phase transition is always dangerous in engineering in the real world.

Teacher Frustration and Emotion Regulation in University Language Teaching

Few jobs come without irritations, and foreign language instruction comes with its own particular set of frustrations which, when accumulated, can lead to stress and eventual burnout for teachers.One mechanism for reducing such frustrations is that of emotion regulation, the cognitive and behavioral strategies individuals employ to manage the emotions they experience or display. To date,no known studies have reported specifically on the in-class frustration experienced by language teachers, or on how teachers regulate their feelings of frustration. Herein, the authors discuss the experiences of seven EFL teachers at a university in Japan obtained through a series of semistructured interviews, classroom observations and corresponding stimulated-recall sessions. The authors discuss four salient thematic frustrations: student apathy, classroom silence, misbehavior in the context of relational strain, and working conditions. The results reveal that participants applied contextually-dependent emotion regulation behaviors, the success of which was often contingent on the participants’ levels of confidence and control over the stressors. Thus, participants showed more success in managing pervasive low-level stressors such as apathy and silence, and more support would be welcome to aid them to manage more debilitating stressors such as student misbehavior.The authors offer suggestions for teachers, trainers and institutions on reducing frustration.

Control the Self-assembly of Block Copolymers by Tailoring the Packing Frustration

The concept of"packing frustration"has been used to understand the self-assembly behaviors of block copolymers for decades.However,rare attention has been paid to tailoring the packing frustration.This account provides a review of our recent endeavor of controlling the self-assembly of block copolymers via tailoring the packing frustration.The basic idea is to release the packing frustration of chains through the local segregation between different blocks of the same component filing different spaces of near and far.Two different majority blocks are designed to release their packing frustration in the matrix.In particular,this effect of released packing frustration has been successfullycombined with other effectss such as the stretched bridging block to stabilize many unusual low.coordinated phases.We have also proposed to release the packing frustration of minority blocks within the interface curva-ture by designing the architectures of minority blocks.The effect of released packing frustration of minority blocks is aplied to drastically expand the region of spherical phases and thus to obtain significant regions of complex Frank Kasper phases.In brief,the self.assembly of block copolymers can be largely contrlled by tailoring the packing frustration of blocks,even leading to the formation of many unusual ordered phases.

Frustration考

一、自我保护冲动和性冲动:在Freud的著作中用德语词Versagung。词根versagen Versagen vi不顶事(物作主语)不起作用vt不同意;拒绝委身于;不准备为….效力;versagungn失灵在英文翻译中把Versagung译为Frustration(受挫)。

From Frustration To Admiration

Many times, my Chinese col- leagues, students and friends have told me how fortunate they are and how much they have ben- efited from me. Not so. I’m theone who has benefited by teaching English inChina. I have met many people and mademany friends. I

从弗洛伊德、克菜因到拉康理论中的Frustration概念考证

在人格结构的基础模型中，母亲亲性的欲望支撑着人格结构的复制，其中Frustration这个概念作为连接实在界和符号界的枢纽，一直没有得到精神分析界广泛的注意，本文着重从时间的发展上，从理论和临在床的角度考证了这个基础的概念。

OJU Peyronie’s Disease in an Elderly Ghanaian Gentleman—A Case-Report and Literature Review

Background: Peyronie’s disease is characterized by fibrous plaque formation in the tunica albuginea, leading to penile curvature and sexual dysfunction. Surgical correction is often required in cases of severe deformity or significant functional impairment. Aim: To present the case of a patient with severe Peyronie’s disease who underwent surgical correction using an autologous fascia lata graft. Case Presentation: We report the case of a 77-year-old Black-African gentleman with Peyronie’s disease, presenting with a self-reported penile curvature of 70 degrees and significant sexual frustration. He was managed surgically with plaque excision followed by a tunica albuginea patch using a subcutaneously harvested autologous fascia lata graft, all performed in a single surgical session. Conclusion: This case highlights the importance of individualized surgical planning and patient-specific considerations in achieving optimal outcomes in the management of Peyronie’s disease, particularly in cases requiring grafting for severe curvature.

A hybrid method integrating Green's function Monte Carlo and projected entangled pair states

This paper introduces a hybrid approach combining Green’s function Monte Carlo(GFMC)method with projected entangled pair state(PEPS)ansatz.This hybrid method regards PEPS as a trial state and a guiding wave function in GFMC.By leveraging PEPS’s proficiency in capturing quantum state entanglement and GFMC’s efficient parallel architecture,the hybrid method is well-suited for the accurate and efficient treatment of frustrated quantum spin systems.As a benchmark,we applied this approach to study the frustrated J_(1)–J_(2) Heisenberg model on a square lattice with periodic boundary conditions(PBCs).Compared with other numerical methods,our approach integrating PEPS and GFMC shows competitive accuracy in the performance of ground-state energy.This paper provides systematic and comprehensive discussion of the approach of our previous work[Phys.Rev.B 109235133(2024)].

梯形Frustrated伊辛模型的低温热力学性质

导出了梯形Ｆｒｕｓｔｒａｔｅｄ伊辛模型配分函数的叠代公式，研究了三种模型的低温热力学性质，发现当温度趋于零时，其热力学函数在某些参数值发生尖锐的变化，详细分析了三种模型在不同参数范围内的基态构形。

广义Fibonacci准周期Frustrated伊辛链的热力学特性

本文应用叠代法分别求出了两种广义 Fibonacci 准周期伊辛链的配分函数。研究了它们的低温热力学性质,发现当温度超于零时,其热力学函数在某些参数值发生尖锐的变化。详细分析了零温时两种系统在不同参数范围内的基态构形,解释了系统出现奇异性的原因。

Multistable Mechanical Metamaterials:A Brief Review

Over the past decade,multistable mechanical metamaterials have been widely investigated because of their novel shape reconfigurability and programmable energy landscape.The ability to reversibly reshape among diverse stable states with different energy levels represents the most important feature of the multistable mechanical metamaterials.We summarize main design strategies of multistable mechanical metamaterials,including those based on self-assembly scheme,snap-through instability,structured mechanism and geometrical frustration,with a focus on the number and controllability of accessible stable states.Then we concentrate on unusual mechanical properties of these multistable mechanical metamaterials,and present their applications in a wide range of areas,including tunable electromagnetic devices,actuators,robotics,and mechanical logic gates.Finally,we discuss remaining challenges and open opportunities of designs and applications of multistable mechanical metamaterials.

Pain acceptance in cancer patients with chronic pain in Hunan, China:A qualitative study

Objective: The purpose of this qualitative study was to describe the experiences of pain acceptance in Chinese cancer patients with chronic pain.Methods: Twelve hospitalized cancer patients with chronic pain participated in this qualitative descriptive study from August to November 2017.In-person semi-structured interviews were conducted,recorded,transcribed,and analyzed using Colaizzi's seven-step method.Results: The following four main themes and 15 subthemes emerged.Theme 1 (adaptation): pain is overwhelming and pain relief is a top priority,avoidance of pain-inducing factors,and resignation;theme 2 (emotional reactions to pain): feeling misunderstood,hopelessness,frustration,irritability,and concern for loved ones;theme 3 (functional limitations): daily life activities,social communication,and work;theme 4 (coping strategies): pharmacological therapies,behavioral strategies,social support strategies,and spiritual strategies.Conclusions: This study provides a description of cancer patients' experiences related to the need for pain acceptance.These findings provide insight into the essential role of pain acceptance and underline the need to apply acceptance-based cognitive behavioral interventions as adjunctive non-pharmacological alternatives for chronic cancer pain.