Assessment of corrected time-step method for nominal ionospheric gradient calculation: A comparative analysis with spatial approaches

The effect of ionospheric delay on the ground-based augmentation system under normal conditions can be mitigated by determining the value of the nominal ionospheric gradient(σvig).The nominal ionospheric gradient is generally obtained from Continuously Operating Reference Stations data by using the spatial single-difference method(mixed-pair,station-pair,or satellite-pair)or the temporal single-difference method(time-step).The time-step method uses only a single receiver,but it still contains ionospheric temporal variations.We introduce a corrected time-step method using a fixed-ionospheric pierce point from the geostationary equatorial orbit satellite and test it through simulations based on the global ionospheric model.We also investigate the effect of satellite paths on the corrected time-step method in the region of the equator,which tends to be in a more north–south direction and to have less coverage for the east–west ionospheric gradient.This study also addresses the limitations of temporal variation correction coverage and recommends using only the correction from self-observations.All processes are developed under simulations because observational data are still difficult to obtain.Our findings demonstrate that the corrected time-step method yieldsσvig values consistent with other approaches.

Guide For Authors

INTRODUCTION Types of Contributions Full-length/Research Article(Page limit:20)A complete report on original research,development,or application of control and machine learning methods.All the authors need to provide their biographies and personal photos.Submitted manuscripts should be nominally around 12 pages in Elsevier's double-column format,but no more than 20 pages(including bios and photos).

Exploring Nominalization in English Abstracts of Applied Linguistics Research Articles:A Comparative Study Between Chinese and International Journals

Researchers around the world strive to communicate new knowledge,primarily via publication,with the abstract being crucial in conveying core insights.Previous research has generally analyzed the discourse features of abstracts from a macro perspective and often employed either outdated texts,such as those over a decade old,or papers written by authors with lower English academic writing proficiency as research material.In this study,we analyzed forty abstracts from leading journals in applied linguistics,evenly split between Chinese and international journals.It revealed that the use of nominalization in abstracts by Chinese and international scholars showed similarities due to the universal academic requirement for conciseness.However,due to cultural and educational differences,each group differed in their respective language choices and nominalization usage.By analyzing the application of nominalization in different cultural contexts,the results of our study offered practical suggestions for crafting abstracts that effectively convey information,thereby,contributing to the broader academic community.

Guide For Authors

INTRODUCTION,Types of Contributions,Full-length/ Research Article (Page limit: 20),A complete report on original research, development, orapplication of control and machine learning methods.All the authors need to provide their biographiesand personal photos. Submitted manuscripts should benominally around 12 pages in Elsevier's double-columnformat, but no more than 20 pages (including bios andphotos).

Guide For Authors

INTRODUCTION.Types of Contributions.Full-length/Research Article(Page limit:20).A complete report on original research,development,or application of control and machine learning methods.All the authors need to provide their biographies and personal photos.Submitted manuscripts should be nominally around 12 pages in Elsevier's double-column format,but no more than 20 pages(including bios and photos).

Comparison of the Economic Scale of China and the United States from the Perspective of Exchange Rate Method and Purchasing Power Parity Method

Recently,people have been discussing a heated topic:the gap between China’s gross domestic product(GDP)and that of the United States is getting bigger and bigger.According to statistics from the International Monetary Fund(IMF),calculated by the exchange rate method,in 2021,China’s and the United States’nominal GDPs were 17.7593 trillion US dollars and 23.5941 trillion US dollars respectively,with China’s nominal GDP accounted for 75.27%of the United States’。

1901—1964年度诺贝尔物理学奖提名情况探微(下)

诺贝尔奖是包括自然科学和人文科学在内的权威性国际大奖,每年颁奖一次,号称"天下第一奖"和"万奖之王"。诺贝尔科学奖得主是全球超级科技精英的顶尖人物,享有崇高的国际地位和声望,荣登诺奖得主殿堂是全世界科学家们梦寐以求的夙愿和至高无上的荣誉。因获取诺贝尔奖提名是赢得诺奖的前提和必由之路(杨振宁和李政道极为特殊的情况另议),故对诺奖提名情况进行研究无疑属于诺学范畴。本文主要利用诺奖官网提名数据库中已公开的原始资料对1901—1964年度诺贝尔物理学奖的提名情况进行了系统的全方位统计分析和研究探讨,力求全面深入而严密精准。

1901—1964年度诺贝尔物理学奖提名情况探微(上)

诺贝尔奖是包括自然科学和人文科学在内的权威性国际大奖,每年颁奖一次,号称"天下第一奖"和"万奖之王"。诺贝尔科学奖得主是全球超级科技精英的顶尖人物,享有崇高的国际地位和声望,荣登诺奖得主殿堂是全世界科学家们梦寐以求的夙愿和至高无上的荣誉。因获取诺贝尔奖提名是赢得诺奖的前提和必由之路(杨振宁和李政道极为特殊的情况另议),故对诺奖提名情况进行研究无疑属于诺学范畴。本文主要利用诺奖官网提名数据库中已公开的原始资料对1901—1964年度诺贝尔物理学奖的提名情况进行了系统的全方位统计分析和研究探讨,力求全面深入而严密精准。

Simulation of pavement roughness based on time domain model

In order to describe pavement roughness more intuitively and effectively, a method of pavement roughness simulation, i.e., the stochastic sinusoidal wave, is introduced. The method is based on the primary idea that pavement roughness is denoted as the sum of numerous sines or cosines with stochastic phases, and uses the discrete spectrum to approach the target stochastic process. It is a discrete numerical method used to simulate pavement roughness. According to a given pavement power spectral density （PSD） coefficient, under the condition that the character of displacement frequency based on the time domain model is in accordance with the given pavement surface spectrum, the pavement roughness is optimized to stochastic equivalent vibrations by computer simulation, and the curves that describe pavement roughness under each grade are obtained. The results show that the stochastic sinusoidal wave is suitable for simulation of measured pavement surface spectra based on the time domain model. The method of the stochastic sinusoidal wave is important to the research on vehicle ride comfort due to its rigorous mathematical derivation, extensive application range and intuitive simulation curve. Finally, a roughness index defined as the nominal roughness index （NRI） is introduced, and it has correlation with the PSD coefficient.

新疆红额金翅的记述

记述了在新疆境内记录的红额金翅 。

Metafunctions and stylistic features of nominalization

As an important feature of written language, nominalization is frequently used in formal texts. Using the approach of systemic functional grammar, the paper presents a detailed analysis of the three metafunctions of nominalization, which entails the positive and negative stylistic effects. The paper also discusses the relationship between form, function and stylistic features.

《英语词汇学》练习题(7)

Ⅰ. Each of the Statements below is followed by four alternative answers. Choose the one that would best complete the statement and put the letter in the bracket.1. Jack of all trades is an idiom_.A. nominal in nature B. adjectival in nature C. verbal in nature D. adverbial in nature2. Let the dog see the rabbit is an idiom_.A. nominal in nature B. adjectival in

Is Math Still Just a Man＇s World？

Awards are important markers of success in any career, and in academia they can play an important role in hiring, promotion and tenure decisions. This study compares awards data for disciplinary societies in STEM （science, technology, engineering and mathematics） to the proportion of women in each respective field. By establishing availability pool estimates of women who should be eligible for senior scholarly awards, a comparison can be made between the proportion of female award winners and the percentage of women active in the discipline. The CBMS （conference board of mathematical sciences） survey in 2005 reported that women were 9% of all full-time tenured professors in doctoral-level mathematics departments; yet during the last decade, women received only 4.8% of scholarly awards from the AMS （American mathematical society）. Similar disparities exist for scholarly achievement awards from the MAA （mathematical association of America）, the SIAM （society for industrial and applied mathematics） and the ASA （American statistical association）. The under-recognition of women for scholarly contributions cannot be attributed solely to low numbers of women, so further explanation must be sought elsewhere. Curiously, women received more than their expected proportion of awards for service and teaching. Decades of research in the social sciences points to ＂implicit associations＂ or subconscious social stereotypes as the mechanism by which both men and women de-value women＇s intellectual accomplishments and praise their communal contributions, which may explain the gender disparity between scholarly and service awards. Gender disparities in scholarly recognition can hinder the advancement of women and limit their numbers as leaders in STEM fields. AWIS （association for women in science） is working with seven disciplinary societies （including AMS, ASA, MAA and SIAM） to identify patterns of behavior that perpetuate unconscious bias in the awards selection process and to pinpoint ways to mitigate its deleterious effects.

Application of Nominal Indirect Anaphora in English Teaching and Learning

This paper deals with the application of nominal indirect anaphora to unveil the essence of nominal indirect anaphora and disclose the magic power of cohesion and coherence inside it from the angle of cognitive linguistics.Thus we can apply the resolution mechanism for English teaching and learning for English learners.

Nominal Model-Based Sliding Mode Control with Backstepping for 3-Axis Flight Table

Based on nominal model, a novel global sliding mode controller （GSMC） with a new control scheme is proposed for a practical uncertain servo system. This control scheme consists of two combined controllers, One is the global sliding mode controller for practical plant, the other is the integral backstepping controller for nominal model. Modeling error between practical plant and nominal model is used to design GSMC. The steady-state control accuracy can be guaranteed by the integral backstepping control law, and the global robustness can be obtained by GSMC. The stability of the proposed controller is proved according to the Lyapunov approach. The simulation results both of sine signal and step signal tracking for 3-axis flight table are investigated to show good position tracking performance and high robustness with respect to large and parameter changes over all the response time.

On Definition of Geograghic Variable Scaling

According to the description effect range, the method of scaling system in cartography is with the precision of four grades： nominal scaling, ordinal scaling, interval scaling and ratio scaling. The authors have researched their innate character and inherent relations. The essence of evaluation partialordering set （A ,≤） is the mapping of evaluation object （X, ≤） under fixed condition. The collection and classification of xi ∈ X corresponds how to express Aj ∈ A, i.e. , V xi ∈ X→f（xi ） = Aj → A, Aj is the image of xi under mapping f. The function relation between evaluation partial-ordering set （A, ≤） and evaluation object （X, ≤） is decided by the space character and the way of collection and classification. The different space character and way of collection and classification will produce the different express method and evaluation result, accordingly the authors give out the mathematical definitions for nominal scaling, ordinal scaling, interval scaling and ratio scaling respectively. These results have been proved through the examples.

HEP quantification strategy based on modified CREAM

The accurate quantification of human error probability(HEP) has long been a main pursuit for most human reliability analysis(HRA) methods. This paper proposes a strategy to analyzeand predict human error on the basis of a further modification of theexisting cognitive reliability and error analysis method (CREAM)in HRA. Through providing a broader definition for the key parametersused in the quantification method, this paper produces arelatively flexible strategy to determine the nominal HEP (HEP0).Basing on this strategy, the actual quantification of HEP in CREAMis able to be applied to more verified conditions. To prove the validityof the method proposed, a case study of spacecraft launch isalso introduced, in which the prediction derived from the method isproved consistent with real field data.

Characterization and performance of the Apollon short-focal-area facility following its commissioning at 1 PW level

We present the results of the first commissioning phase of the short-focal-length area of the Apollon laser facility(located in Saclay,France),which was performed with the first available laser beam(F2),scaled to a nominal power of 1 PW.Under the conditions that were tested,this beam delivered on-target pulses of 10 J average energy and 24 fs duration.Several diagnostics were fielded to assess the performance of the facility.The on-target focal spot and its spatial stability,the temporal intensity profile prior to the main pulse,and the resulting density gradient formed at the irradiated side of solid targets have been thoroughly characterized,with the goal of helping users design future experiments.Emissions of energetic electrons,ions,and electromagnetic radiation were recorded,showing good laser-to-target coupling efficiency and an overall performance comparable to that of similar international facilities.This will be followed in 2022 by a further commissioning stage at the multipetawatt level.

Instruction of Nominalization by Applying Enabling of POA

It is noticeable that the academic papers written by Chinese English learners are lacking in academic features largely due to their poor ability to use nominalization.Therefore,the instruction of nominalization in an academic English writing course is badly needed.The author conducted onesemester-long instruction of nominalization to 90 non-English majors under the guidance of the production-oriented approach(POA).This research demonstrated how to apply POA,specifically,the enabling procedure to the teaching of nominalization.By triangulating the data of students’interviews,learning journals and written output,and the data of 4 teachers’class observations and interviews,this study found that the accurate application of the three criteria of effective enabling contributed to the improvement of the quantity and quality of nominalization in academic writing.

Re: Errors in Zhao et al(2015), Impact of enteral nutrition on energy metabolism in patients with Crohn's disease

We report invalidating errors related to the statistical approach in the analysis and data inconsistencies in a published single cohort study of patients with Crohn's disease. We provide corrected calculations from the available data and request that a corrected analysis be provided by the authors. These errors should be corrected.