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Four new species of free-living marine nematode from the sea areas of China

Journal of Oceanology and Limnology 2021年第4期39卷 1547-1558页

作者： Jing SUN mian huang Yong huang College of Life Sciences Liaocheng UniversityLiaocheng 252059China Department of Marine Organism Taxonomy and Phylogeny Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

Two new species of genus Diplopeltoides Gerlach,1962 and two new species of genus Minolaimus Vitiello,1970 were described based on recently collected specimens from marine sediments of the South China Sea and the East China Sea,*** conoicaudatus *** characterized by annulated cuticle;tiny terminal buccal cavity;short cephalic setae about 2-μm long;loop-shaped amphideal fovea without sclerotized plate;slender and arcuate spicules;triangular gubernaculum possessing a small dorso-caudal apophysis;female with two opposed and reflexed *** longifoveatus *** characterized by its papilliform cephalic sensilla;long and narrow amphideal fovea with fine transverse striations;inverse S-shaped spicules with a dorsally bent manubrium;gubernaculum with dorso-caudal apophysis;cylindrical tail with round terminal *** multisupplementatus *** characterized by cuticle with lateral differentiation of three longitudinal rows of large dots,spiral amphideal fovea with seven turns,pharynx cylindrical without posterior bulb,spicules arcuated with central lamella,gubernaculum arcuate and parallel to spicule,without dorso-caudal apophysis,a papilliform and 29 cup-shaped precloacal supplement;tail conical with long flagelliform *** apicalis *** characterized by cuticle with lateral differentiation of three longitudinal rows of larger dots from the middle of pharynx to the conical portion of tail and a longitudinal row of pores in the pharyngeal region and precloacal region;spiral amphidial fovea with four turns and close to anterior end;pharynx cylindrical with oval posterior bulb,spicules arcuated and proximal end bent dorsally,gubernaculum with a broad curved dorsal apophysis;two sucked-like and six cup-shaped cuticularized precloacal supplements;tail conico-cylindrical with slightly enlarged *** keys to species of Diplopeltoides and Minolaimus were provided.

关键词： Diplopeltoides conoicaudatus sp.nov. Diplopeltoides longifoveatus sp.nov. Minolaimus multisupplementatus sp.nov. Minolaimus apicalis sp.nov. East China Sea South China Sea

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Statistical inference for the nonparametric and semiparametric hidden Markov model via the composite likelihood approach

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Science China Mathematics 2023年第3期66卷 601-626页

作者： mian huang Yue huang Weixin Yao School of Statistics and Management Shanghai University of Finance and EconomicsShanghai 200433China Department of Statistics University of CaliforniaRiversideRiversideCA 92521USA

In this paper, we propose a new estimation method for a nonparametric hidden Markov model(HMM), in which both the emission model and the transition matrix are nonparametric, and a semiparametric HMM, in which the transition matrix is parametric while emission models are nonparametric. The estimation is based on a novel composite likelihood method, where the pairs of consecutive observations are treated as independent bivariate random variables. Therefore, the model is transformed into a mixture model, and a modified expectation-maximization(EM) algorithm is developed to compute the maximum composite *** systematically study asymptotic properties for both the nonparametric HMM and the semiparametric HMM. We also propose a generalized likelihood ratio test to choose between the nonparametric HMM and the semiparametric HMM. We derive the asymptotic distribution and prove the Wilk’s phenomenon of the proposed test statistics. Simulation studies and an application in volatility clustering analysis of the volatility index in the Chicago Board Options Exchange(CBOE) are conducted to demonstrate the effectiveness of the proposed methods.

关键词： nonparametric HMM nonhomogeneous HMM semiparametric estimate composite likelihood generalized likelihood ratio test

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A new free-living marine nematode species of Rhinema from the South China Sea

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Journal of Oceanology and Limnology 2020年第2期38卷 545-549页

作者： ZHAI Hongxiu huang mian huang Yong College of Life Sciences Liaocheng UniversityLiaocheng 252059China Department of Marine Organism Taxonomy and Phylogeny Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

A new free-living marine nematode species of the genus Rhinema belonging to the family Monoposthiidae was collected from marine sediments in the Qiongzhou Strait of the South China Sea,and it is described here as Rhinema longispicula *** new species is characterized by coarsely annulated cuticle with 12 longitudinal ridges(alae)marked as reversed *** first and second annuli broader and form a kind of a cephalic *** amphideal fovea circular,situated in the middle of the broad second annulus,not surrounded by dense *** cavity cylindrical with a large dorsal *** with a prominent anterior pharyngeal bulb and an elongated terminal *** spicules strongly curved,with cephalated proximal end and pointed distal *** boat-shaped,without apophysis.A long and blunt precloacal seta *** with two opposed,outstretched ovaries.

关键词： Rhinema longispicula sp.nov. free-living marine nematode taxonomy

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Daptonema parabreviseta sp. nov.(Xyalidae, Nematoda) from the Jiaozhou Bay of the Yellow Sea, China

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Journal of Oceanology and Limnology 2019年第1期37卷 273-277页

作者： huang mian SUN Jing huang Yong College of Life Sciences Liaocheng University Key Laboratory of Ecology and Biodiversity of Shandong Colleges and University

A new species of free-living marine nematode of the genus Daptonema Cobb, 1920 is described from the sublittoral sediment of the Jiaozhou Bay, Qingdao. Daptonema parabreviseta sp. *** characterized by having narrowed anterior end; small funnel-shaped buccal cavity; short cephalic setae;spicules with bulbiform proximal end and pointed distal end; gubercunalum tubular shape with a blunt dorsal apophysis. The female genital system presents a spacious postvulval sac. The new species closely resembles Daptonema brevisetosum Thanh & Gagarin, 2009. However, it differs from Daptonema brevisetosum by having relatively narrowed head(10 μm vs 20 μm); spicules with bulbiform proximal end and pointed distal end, not bifurcated at distal end. Female genital system with a spacious postvulval sac(vs absent).

关键词： new species free-living marine nematode taxonomy

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Two new species of free-living nematodes from the East China Sea

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Acta Oceanologica Sinica 2018年第10期37卷 148-151页

作者： SUN Yan huang mian huang Yong College of Life Sciences Liaocheng University

Two new species of free-living marine nematodes of the genera Hopperia and Nemanema are described from the sublittoral sediment of the East China Sea. Hopperia macramphida sp. nov. is characterized by having large amphidial fovea with five turns; arcuate spicules with enlarged proximal end and central internal lamella extending one third of spicule length from proximal end; gubernaculum with bent apophyses, six papilliform precloacal supplements; and conico-cylindrical tail with swollen tip and terminal setae. Nernanema minutum sp, nov. is characterized by relatively smaller body size in the genus; large oval amphidial fovea; conical tail; slender spicules with alae and hooked proximal end; ring-like gubernaculum; and papilliform precloacal supplements with three short setae. An updated dichotomous key is provided for the 17 species of Hopperia.

关键词： Hopperia macramphida sp. nov. Nemanema minium sp. nov. marine nematode taxonomy

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Two new species of the genus Wieseria (Nematoda:Enoplaida:Oxystominidae) from the Jiaozhou Bay

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Acta Oceanologica Sinica 2018年第10期37卷 157-160页

作者： huang mian SUN Jing huang Yong College of Life Sciences Liaocheng University

Two new species of free-living marine nematodes of the genus Wieseria are described from the sublittoral sediment of the Jiaozhou Bay in Qingdao. Wieseria sinica sp. nov. is characterized by having short labial and cephalic setae in a backward direction; oblong amphidial foveas with double contour; arcuate spicules with alea; ring-like guberculum; and clavated tail. Wieseria tenuisa sp. nov. is characterized by its very large ＂a＂ value （133.6）, long labial setae in a forward direction; spicules with alea and hooked proximal end; rodlike gubernaculums; and relatively longer clavated tail （7.9 a.b.d, long）. It differs from Wieseria sinica sp. nov. mainly by the longer labial setae, slightly straight spicules with hooked proximal end, and its thinner body. Amended dichotomous key to male species of Wieseria is provided.

关键词： Wieseria sinica sp. nov. Wieseria tenuisa sp. nov. free-living marine nematode taxonomy

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Does College Location Affect the Location Choice of New College Graduates in China?

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China & World Economy 2022年第3期30卷 135-160页

作者： mian huang Chunbing Xing Xiaoyong Cui Research Institute of Economics and Management Southwestern University of Finance and EconomicsChina School of Agricultural Economics and Rural Development Renmin University of ChinaChina School of Economics Peking UniversityChina

Based on a representative survey of new college graduates in China,we present a job location choice model that allows for a self-selection effect in college regions by considering region-dependent heterogeneous preference for job locations and unobservable location *** also treat endogenous housing costs using the method developed by Berry et al.(1995).Our estimation results show that college education significantly increases graduates'likelihood of working in the city where their college is ***,a model that does not consider the self-selection effect overestimates this *** impact of college location on a graduate's migration decision varies considerably across *** is significant heterogeneity between students from universities of dijferent tiers and rural versus urban ***,the graduates show a marked home preference when choosing their job locations,and they tend to avoid working in cities with high housing *** findings shed light on debates on place-based higher education policies and spatial distribution of human capital with a high level of education.

关键词： college graduates higher education human capital location choice regional development

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反语新论

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外语教学 2008年第3期29卷 18-23页

作者：黄缅广东外语外贸大学外国语言学及应用语言学研究中心广东广州510420

语用学研究反语是围绕着其机理展开的。过去的研究主要有含义论、假装论、回声论等。本文以常规关系理论为框架,提出反语研究的新进路。反语的运用(生成和理解)实质上是人们在大脑中知识结构的关系性知识的制约下,在特定的语境中对不同... 详细信息

语用学研究反语是围绕着其机理展开的。过去的研究主要有含义论、假装论、回声论等。本文以常规关系理论为框架,提出反语研究的新进路。反语的运用(生成和理解)实质上是人们在大脑中知识结构的关系性知识的制约下,在特定的语境中对不同程度反向相邻关系的本能感知。反语涉及同一个认知域(范畴)下的两个次认知域(范畴)之间的投射,可以被看作隐喻的一个特例。

关键词：反语心理模型相邻关系

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语言模仿之谜——幂姆的认知研究

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外语研究 2007年第3期24卷 13-17,23页

作者：黄缅广东外语外贸大学广东广州510420

本文以语言的“幂姆”现象为例,对语言复制与模仿之谜做一些认知机理的研究。作为语言的幂姆,只要是被复制模仿,必定涉及两种表达形式:被复制(模仿)前的表达形式和作为复制(模仿)结果的表达形式。前者已被定义为“幂姆”,后者我们称为... 详细信息

本文以语言的“幂姆”现象为例,对语言复制与模仿之谜做一些认知机理的研究。作为语言的幂姆,只要是被复制模仿,必定涉及两种表达形式:被复制(模仿)前的表达形式和作为复制(模仿)结果的表达形式。前者已被定义为“幂姆”,后者我们称为“仿体”。我们提出自主依存分析框架来解释语言复制于模仿的认知机理。语言使用者的意向性是对幂姆进行不同形式、不同手段和不同程度模仿的动因,通过体现相邻/相似性的拈连操作是实现幂姆模仿的机制,从一般是隐性的幂姆推衍出显性的仿体是幂姆模仿可能的路径,幂姆模仿的结果是形成与幂姆有不同程度的相邻/相似性或称亲代相似性的仿体。

关键词：幂姆仿体自主-依存意向性相邻和相似

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观念·方法·应用——《认知语言学》简评

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外语教学与研究 2006年第2期38卷 154-157页

作者：黄缅广东外语外贸大学 510420

认知语言学的发展已有三十年的历史（p．1），系统的教科书还不多见。2004年，剑桥大学出版社出版了***和***合著的剑桥语言学系列教材之一Cognitive Linguistics。教材不同于专著。个人的专著可以尽情表达研究者的最新研究成果和独特... 详细信息

认知语言学的发展已有三十年的历史（p．1），系统的教科书还不多见。2004年，剑桥大学出版社出版了***和***合著的剑桥语言学系列教材之一Cognitive Linguistics。教材不同于专著。个人的专著可以尽情表达研究者的最新研究成果和独特学术见解，它的合理性和科学性可交由读者去评论。教材作为教学用书，却一般应为该课程的讲和学提供能反映本学科新的、较为稳妥的学术信息。当然，教材也不是学术信息的堆积，一本好的教材应从观念、方法、应用三个方面加以概括。《认知语言学》一书正是在概括和讲解认知语言学主要学科信息的基础上，着重引导学生掌握能体现这一学科本质特点的基本观念和方法，从而有助于根据这些观念和方法应用有关的理论来研究语言。本文想围绕这一点对该书作一评述。

关键词：认知语言学应用剑桥大学出版社系列教材简评学术信息学术见解研究成果教学用书本质特点

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