Relaxed Stability Criteria for Time-Delay Systems:A Novel Quadratic Function Convex Approximation Approach

This paper develops a quadratic function convex approximation approach to deal with the negative definite problem of the quadratic function induced by stability analysis of linear systems with time-varying delays.By introducing two adjustable parameters and two free variables,a novel convex function greater than or equal to the quadratic function is constructed,regardless of the sign of the coefficient in the quadratic term.The developed lemma can also be degenerated into the existing quadratic function negative-determination(QFND)lemma and relaxed QFND lemma respectively,by setting two adjustable parameters and two free variables as some particular values.Moreover,for a linear system with time-varying delays,a relaxed stability criterion is established via our developed lemma,together with the quivalent reciprocal combination technique and the Bessel-Legendre inequality.As a result,the conservatism can be reduced via the proposed approach in the context of constructing Lyapunov-Krasovskii functionals for the stability analysis of linear time-varying delay systems.Finally,the superiority of our results is illustrated through three numerical examples.

Tailoring MXene Thickness and Functionalization for Enhanced Room‑Temperature Trace NO_(2) Sensing

In this study,precise control over the thickness and termination of Ti3C2TX MXene flakes is achieved to enhance their electrical properties,environmental stability,and gas-sensing performance.Utilizing a hybrid method involving high-pressure processing,stirring,and immiscible solutions,sub-100 nm MXene flake thickness is achieved within the MXene film on the Si-wafer.Functionalization control is achieved by defunctionalizing MXene at 650℃ under vacuum and H2 gas in a CVD furnace,followed by refunctionalization with iodine and bromine vaporization from a bubbler attached to the CVD.Notably,the introduction of iodine,which has a larger atomic size,lower electronegativity,reduce shielding effect,and lower hydrophilicity(contact angle:99°),profoundly affecting MXene.It improves the surface area(36.2 cm^(2) g^(-1)),oxidation stability in aqueous/ambient environments(21 days/80 days),and film conductivity(749 S m^(-1)).Additionally,it significantly enhances the gas-sensing performance,including the sensitivity(0.1119Ωppm^(-1)),response(0.2% and 23%to 50 ppb and 200 ppm NO_(2)),and response/recovery times(90/100 s).The reduced shielding effect of the–I-terminals and the metallic characteristics of MXene enhance the selectivity of I-MXene toward NO2.This approach paves the way for the development of stable and high-performance gas-sensing two-dimensional materials with promising prospects for future studies.

Skopos:The Central Theory of Functional Approach

Skopos is the central theory of functional approach. In this article, firstly, it will discuss Katharina Reiss's Skopostheorie. Secondly, it will explain Has. J. Vermeer's Skopostheorie. Thirdly, it will analyze Justa Holz-Manttari and Chrisriane Nord's Skopostheorie. Finally, it will give some opinions the importance and practicality of Skopostheorie in the translating.

Functional Approach to the C-E Translation of Tourist Material

Tourist material has its own text features.To translate tourist material is to achieve its purpose by transferring its pragmatic force,which is determined by text features and functions of tourist material.Which strategies exactly should be used in a certain circumstance is not important provided the pragmatic force is transmitted successfully.

On Proverb Translation: A Functional Equivalence Approach

Translation is regarded as a cross-cultural,cross-social,and cross-linguistic communicative activity.In this light,the process of translation is perceived as one of establishing functional equivalence between the source text and the target text in order for the latter to be as faithful as possible to the former in both meaning and function.Proverbs are language-and culture-specific expressions,which often cause difficulties in translation.This paper aims to approach proverb translation from the functional equivalence perspective.

The Development of Meta-functional Approaches in Translation Studies

Functional linguistics has exerted an increasing impact on modern linguistic studies.Functional approaches,especially metafunctions have undergone a process of development and improvement.The affirmation of the metafunctions of language has aroused more and more scholars'concern on the"functional"facet of language,especially in Translation studies.The formation and improvement of functional approaches are introduced separately.

The Application of Cognitive-Functional Approach in College English Teaching

The Cognitive-Functional Approach combines the linguistic views of two major linguistic theories,formalism linguistics and functional linguistics.This approach fully exerts the innate language competence of foreign language learners,help learners to set the language parameter of the target language and explore the rules of target language actively.On the other hand,this approach also advocates the ability of foreign language learners to choose the proper language form in a specific language environment and to train learners'communicative competence.

Mapping equivalent approach to analysis and realization of memristor-based dynamical circuit

A novel mapping equivalent approach is proposed in this paper, which can be used for analyzing and realizing a memristor-based dynamical circuit equivalently by a nonlinear dynamical circuit with the same topologies and circuit parameters. A memristor-based chaotic circuit and the corresponding Chua＇s chaotic circuit with two output differentiators are taken as examples to illustrate this approach. Equivalent dynamical analysis and realization of the memristor-based chaotic circuit are performed by using Chua＇s chaotic circuit. The results indicate that the outputs of memristor-based chaotic circuit and the corresponding outputs of Chua＇s chaotic circuit have identical dynamics. The proposed approach verified by numerical simulations and experimental observations is useful in designing and analyzing memristor-based dynamical circuits.

Approaches to Pendent Groups' Functionalization of Polyimide

Pendent groups' functionalization of polyimide is an optimum approach to improve its processability and achieve functionalized polyimide materials. There are two types of modification routes for pendent groups' functionalization of polyimide: monomer route and macromolecular route. In this paper, various approaches for pendent groups' functionalization of polyimide are introduced. At the same time, a new method to achieve functional polyimide materials without decreasing its thermal stability and mechanical properties is mentioned.

FUZZY APPROACHING SET AND FUZZYAPPROACHING FUNCTIONAL MAPPING

By establishing the concepts of fuzzy approaching set and fuzzy approaching functional mapping and making research on them, a new method for time series prediction is introduced.

Comparative study of functional optical zone:small incision lenticule extraction versus femtosecond laser assisted excimer laser keratomileusis

AIM:To investigate the size of functional optical zone(FOZ)after small incision lenticule extraction(SMILE)versus femtosecond laser assisted excimer laser keratomileusis(FS-LASIK)for myopia correction and potential associated factors for FOZ.METHODS:A total of 133 patients who received corneal refractive surgery in our hospital between November 2018 and July 2021 were retrospectively enrolled.There were 63 patients(123 eyes)in SMILE group and 70patients(139 eyes)in FS-LASIK group.The size of FOZ was measured using Pentacam 3-dementional anterior segment analyzer before and 3mo after surgery,so as to analyze postoperative achieved functional optical zone(AFOZ)and its contributing parameters.RESULTS:When planned functional optical zone(PFOZ)was 6.5 mm for both groups,AFOZ was 1.45±0.27 and 1.67±0.25 mm smaller than preoperative FOZ in SMILE group and FS-LASIK group 3mo after surgery.AFOZ in SMILE group was significantly larger than that in FS-LASIK group(P<0.001).Variation of FOZ was negatively correlated with preoperative spherical equivalent(SE)and positively correlated with variation of mean keratometry value(△Km),variation of spherical aberration(△SA),and variation of Q-value(△Q,all P<0.001)in both groups.Multiple variable linear regression equations were△FOZ=1.354-0.1×pre-SE+0.336×△Q+1.462×△SA in SMILE group and△FOZ=1.512+0.137×△Q+0.468×△SA in FS-LASIK group.CONCLUSION:AFOZ is significantly smaller than preoperative FOZ in both SMILE and FS-LASIK groups.With the same PFOZ,larger AFOZ is achieved in SMILE group than in FS-LASIK group.

An Analysis of Lyrics Translation Based on Functional Approaches of Reiss——A case study of Qian Li Zhi Wai

As a bridge for cross-cultural communication, Chinese songs, which lay considerable emphasis on literary value of lyrics,play a critical role in promoting Chinese culture. High-qualitytWraanis lation of lyrics is of great importance in cross-cultural process.By conducting a case study of lyrics translation of Qian Li Zhibased on Functional approaches of Reiss—Functional charac-teristics of text types and its links to translation methods, this paper explores practical methods and principles in lyrics translation.

Effect of two surgical approaches on the lung function and prognosis of patients with combined esophagogastric cancer

BACKGROUND Adenocarcinoma of the esophagogastric junction has a center of origin within 5 cm of the esophagogastric junction.Surgical resection remains the main treatment.A transthoracic approach is recommended for Siewert I adenocarcinoma of the esophagogastric junction and a transabdominal approach is recommended for Siewert III adenocarcinoma of the esophagogastric junction.However,there is a need to determine the optimal surgical approach for Siewert II adenocarcinoma of the esophagogastric junction to improve lung function and the prognosis of patients.AIM To investigate and compare the surgical effects,postoperative changes in pulmonary function,and prognoses of two approaches to treating combined esophagogastric cancer.METHODS One hundred and thirty-eight patients with combined esophagogastric cancer treated by general and thoracic surgeries in our hospital were selected.They were divided into group A comprising 70 patients(transabdominal approach)and group B comprising 68 patients(transthoracic approach)based on the surgical approach.The indexes related to surgical trauma,number of removed lymph nodes,indexes of lung function before and after surgery,survival rate,and survival duration of the two groups were compared 3 years after surgery.RESULTS The duration of surgery,length of hospital stay,and postoperative drainage duration of the patients in group A were shorter than those of the patients in group B,and the volume of blood loss caused by surgery was lower for group A than for group B(P<0.05).At the one-month postoperative review,the first second,maximum ventilation volume,forceful lung volume,and lung volume values were higher for group A than for group B(P<0.05).Preoperatively,the QLQ-OES18 scale scores of the patients in group A were higher than those in group B on re-evaluation at 3 mo postoperatively(P<0.05).The surgical complication rate of the patients in group A was 10.00%,which was lower than that of patients in group B,which was 23.53%(P<0.05).CONCLUSION Transabdominal and transthoracic surgical approaches are comparable in treating combined esophagogastric cancer;however,the former results in lesser surgical trauma,milder changes in pulmonary function,and fewer complications.

A Functional-Equivalence Approach to Two English Versions of Hao’liao’ge

The understanding of Hao’liao’ge is very important for the understanding of Hong’lou’meng so Hao’liao’ge can be said to be the key point of the whole novel.Therefore,it is necessary to pay attention to the comparative study of English translation of Hao’liao’ge in the English translation studies of Hong’lou’meng.Nida's Functional Equivalence Theory will be used to com⁃pare and analyze the two translations of Hao’liao’ge and explore the different translation strategies of the two translators,hoping to have some inspiration for poetry translation and give Chinese and English readers a deeper understanding of Hao’liao’ge.

建筑空间最优节能设计模型仿真研究

由于建筑结构主体较多,空间能耗难以合并控制,导致目前建筑空间能源耗用量较大。为此,构建基于等效转换法的建筑空间最优节能模型,并对其仿真研究。提出建筑总体能耗作为初始优化的“尺度”概念,该尺度为建筑空间的外墙、内墙、屋顶、分户楼板以及门窗等参数,求解这些尺度的最佳标准值。采用等效转换法计算在节能条件下所能接受的最大能耗范围。在此基础上,以上述范围值为约束条件,建立控制函数。将上述提到标准尺度值和最大能耗范围设置为最优解,建立最优节能设计模型,设定温差调节因子,对每一次室内外温差实施有效调节控制,保证建筑体参数符合最佳能耗范围。仿真结果证明,所提方法对冬季采暖和夏季制冷的能耗控制效果均较佳,节能效果最优且算法收敛性高,鲁棒性较好。

颈侧方入路手术在治疗原发性甲状旁腺功能亢进症中的临床研究

目的探讨颈侧方切口经胸锁乳突肌肌间入路手术(SMIA)在治疗原发性甲状旁腺功能亢进症中的可行性及其临床效果。方法回顾性分析2019年1月-2022年6月浙江大学医学院附属第一医院行单侧甲状旁腺手术的64例原发性甲状旁腺功能亢进症患者的临床资料,根据手术切口及入路分为颈侧方切口SMIA组及正中切口颈白线入路组(LACA组)。比较两组间临床特征、手术相关结果及术后颈前区功能的差异。采用EQ-5D-5L量表评估术后颈部不适主观感受,Hollander伤口评估量表评定切口愈合情况。结果两组患者在年龄、性别、术中出血、手术前后甲状旁腺激素及血钙水平等方面均无统计学差异(P>0.05)。SMIA组平均手术时间[(39.77±5.69)min]明显少于LACA组[(54.41±4.66)min]。术后1月及12月,两组在颈前区功能保护方面有统计学差异(1月:84.67±3.74 vs.79.47±5.38,P<0.001;12月:93.80±2.52 vs.89.94±2.39,P<0.001),且SMIA组均优于LACA组;SMIA组术后6月及12月的Hollander切口评估量表得分优于LACA组,差异有统计学意义(6月:1.93±0.58 vs.2.41±0.66,P=0.003;12月:1.03±0.67 vs.1.74±0.62,P<0.001)。结论颈侧方切口经胸锁乳突肌肌间入路行甲状旁腺切除是简便、安全及有效的手术方式,较于传统切口更易寻找甲状旁腺病变,缩短手术时间,且对颈前区功能保护的作用优势明显。

探讨额外侧锁孔入路与翼点入路夹闭术在前交通动脉瘤的应用效果

目的探讨于前交通动脉瘤中分别应用额外侧锁孔入路和翼点入路夹闭术的临床效果。方法回顾性选择2020年3月-2023年5月邳州市中医院行开颅动脉瘤夹闭手术的62例前交通动脉瘤破裂患者的临床资料,根据手术入路方式将其分为对照组(n=31)和观察组(n=31)。对照组行翼点入路开颅治疗,观察组行额外侧锁孔入路开颅治疗。比较两组手术情况、术后日常生活能力、神经及认知功能改善程度,统计两组并发症发生情况。结果治疗后,观察组患者的术中出血量(260.16±75.27)mL少于对照组,手术时间(206.78±28.07)min及住院时间(7.34±1.84)d均短于对照组,差异有统计学意义(t=7.578、7.405、7.404,P均<0.05);观察组术中动脉瘤破裂出血率、脑直回切除率均比对照组低,观察组神经功能缺损评分、日常生活能力评分优于对照组,观察组认知功能评分高于对照组,差异有统计学意义(P均<0.05);治疗后,两组患者出现术后新增颅内出血、短暂性缺血、感染、神经症状及脑积水等并发症的总发生率比较,差异无统计学意义(P>0.05)。结论前交通动脉瘤患者分别接受额外侧锁孔入路术和翼点入路夹闭术治疗均具有一定效果,但额外侧锁孔入路术的效果更理想,在改善神经及认知功能、日常生活能力方面存在显著优势,且不会产生严重并发症。