5,989 research outputs found
Analysis of consumer behaviour in market and transitional economies : applications to Britain and China
No full textThis thesis is a microeconometric analysis of consumer behaviour in both market economies and economies in transition from a centrally planned to a market system. As examples, we take the UK (in Part One) and China (in Part Two) respectively.In Part One we make use of Family Expenditure Surveys (FES) to test the relevance of different models of consumer behaviour for the UK. In Chapter 1 we test the Frisch demand model in the life-cycle context using pseudo-panel data constructed from FES of 1978-84 and also extend the Frisch model to incorporate the durables, together with non-durables and labour supply decisions. We find that the life-cycle theory cannot simultaneously offer a satisfactory explanation of the behaviour of household hour/wage decisions over both the life cycle and the business cycle. This is consistent with results based on earlier compatible data. Based on a less restrictive model we do not find evidence rejecting symmetry restrictions.Chapter 2 is a cross-section analysis (using 1978 FES) of the effect of demographic variations on household commodity and leisure demand. The continuous representation of family age composition using cubic spline interpolation successfully explains the age effect on consumption of food, clothing, service, fuel, head of household leisure, but not for transport and vehicle consumption. The assumption imposed in Chapter 1 in the construction of pseudo-panel data, i.e. the constant marginal utility income among households whose heads fall into particular age cohorts, is also tested using seven cross-section FES data. We find that the marginal utility of income is not only related to the age of the head of household but also to other socio-demographic characteristics such as their educational attainment and occupation. This suggests that this crude assumption, implicit in aggregation, is not appropriate.</p
Online supplementary file 1 - Supplemental material for Facilitating and Assessing Academic Writing to Graduate Students in a Pilot English for Academic Purposes Course: An Activity Theoretical Perspective
No full textSupplemental material, Online supplementary file 1, for Facilitating and Assessing Academic Writing to Graduate Students in a Pilot English for Academic Purposes Course: An Activity Theoretical Perspective by Jianli Wang and Limin Tony Qin in International Journal of Educational Reform</p
Three new species of Scalida (Blattodea: Blattellidae) from Yunnan, China
No full textQiao, Limin, Li, Qianqian, Yao, Wenwen, Wang, Zongqing, Che, Yanli (2023): Three new species of Scalida (Blattodea: Blattellidae) from Yunnan, China. Zootaxa 5306 (1): 144-150, DOI: 10.11646/zootaxa.5306.1.8, URL: http://dx.doi.org/10.11646/zootaxa.5306.1.
Denial-of-Service Attacks on Host-Based Generic Unpackers
No full textChina National Science FoundationThis research was mostly done when the first three authors, Limin Liu, Jiang Ming, and Zhi Wang, were researchers working in Singapore Management University. It was partially supported by National Science Foundation (NSF) China under the agreements 90718005, 70890084/G021102, and 60573015.</p
sj-pdf-1-imr-10.1177_03000605221108102 - Supplemental material for Portable electronic bronchoscopy for clinical application: a multi-institutional randomized instrument validation study
No full textSupplemental material, sj-pdf-1-imr-10.1177_03000605221108102 for Portable electronic bronchoscopy for clinical application: a multi-institutional randomized instrument validation study by Yuanhua Qiu, Ganzhu Feng, Zhen Yu, Limin Wang and Enguo Chen in Journal of International Medical Research</p
supplemental_material_clean – Supplemental material for Motor Imagery Training After Stroke Increases Slow-5 Oscillations and Functional Connectivity in the Ipsilesional Inferior Parietal Lobule
No full textSupplemental material, supplemental_material_clean for Motor Imagery Training After Stroke Increases Slow-5 Oscillations and Functional Connectivity in the Ipsilesional Inferior Parietal Lobule by Xu Wang, Hewei Wang, Xin Xiong, Changhui Sun, Bing Zhu, Yiming Xu, Mingxia Fan, Shanbao Tong, Limin Sun and Xiaoli Guo in Neurorehabilitation and Neural Repair</p
FIGURE 2. A–H in Three new species of Scalida (Blattodea: Blattellidae) from Yunnan, China
No full textFIGURE 2. A–H. Scalida spinosa Qiao & Che sp. nov., holotype, male. A. habitus, dorsal view; B. habitus, ventral view; C. front femur, ventral view; D. seventh abdominal tergite, dorsal view; E. left wing, dorsal view; F. left tegmen, dorsal view; G. supra-anal plate, ventral view; L. subgenital plate, dorsal view. Scale bars = 5.0 mm (A, B), 2.0 mm (E, F), 0.5 mm (C, D, G, H).Published as part of Qiao, Limin, Li, Qianqian, Yao, Wenwen, Wang, Zongqing & Che, Yanli, 2023, Three new species of Scalida (Blattodea: Blattellidae) from Yunnan, China, pp. 144-150 in Zootaxa 5306 (1) on page 148, DOI: 10.11646/zootaxa.5306.1.8, http://zenodo.org/record/805440
Clarifying the nature of the Johari-Goldstein β-relaxation and emphasising its fundamental importance
No full textSince 1998 the primitive relaxation time tau(0)(T,P) of the Coupling Model (CM) and the Johari-Goldstein (JG) beta-relaxation time tau(JG)(T,P) are shown approximately equal in many glass-formers. The CM relation between tau(0)(T,P) and tau(alpha)(T,P) at anyTandPis exact. Additionally from the CM relation tau(alpha)(T,P)/tau(0)(T,P) isexactlyinvariant to variations ofTandPwhile tau(alpha)(T,P) is kept constant, and tau(0)isexactlya function of rho(gamma)/Tlike tau(alpha). However, since tau(JG)(T,P) approximate to tau(0)(T,P), the exact invariance of tau(alpha)(T,P)/tau(0)(T,P) leads toapproximateinvariance of tau(alpha)(T,P)/tau(JG)(T,P), and tau(JG)isapproximately afunction of rho(gamma)/T. Notwithstanding, the CM prediction of the approximate relations between tau(beta)and tau(alpha)were mistaken asexactrelations by some researchers. In this paper, we remove this misunderstanding by demonstrating via simulations and experiments that the JG beta-relaxation is comprised of processes with different length-scales and degrees of cooperativity, and the process is heterogeneous. The distribution of processes makes tau(JG)(T,P) equivocal, because it is just a single relaxation time used to represent the different processes within the distribution, which may change on varyingTandP, at constant tau(alpha)(T,P). The problem is compounded if the beta-relaxation is not resolved, and fitting procedure used to extract tau(JG)(T,P) and tau(alpha)(T,P). Despite the relations of tau(JG)(T,P) to tau(alpha)(T,P) are approximate, we show these properties of tau(JG)(T,P) are truly remarkable, fundamental, general, and important
Scalida hamata Qiao & Li & Yao & Wang & Che 2023, sp. nov.
No full text1. <i>Scalida hamata</i> Qiao & Che sp. nov. <p>Description. Male: pronotum length×width 2.1× 3.1 mm, body length including tegmen 11.2 mm.</p> <p>Body yellowish brown. Head reddish brown. Face with two brown stripes. Ocellar spots yellowish white. Antennae brown, lighter at base. Pronotum blackish brown and slightly lighter in the middle, anterior and two side borders yellowish white. Tegmina blackish brown with costal field and part of radial field yellowish white. Vertex with interocular space equal to the distance of antennal sockets. Third and fifth maxillary palpomeres about equal in length, each distinctly longer than the fourth. Pronotum nearly trapezoidal, hind margin slightly arched (Fig. 1A–B). Tegmina and hind wings fully-developed, extending beyond end of abdomen. M of hind wing unbranched and distinctly curved near middle. CuA with 2 complete branches and 1 incomplete branch (Fig. 1E). Front femur Type B3 (Fig. 1C). T7 specialized with a pair of symmetrical glands in the middle, hind margin with a broad and conspicuous concavity, and a knob on each posterolateral corner (Fig. 1D).</p> <p>Supra-anal plate symmetrical, middle of hind margin slightly knobbed with many bristles and a spine-like process on each side (Fig. 1G). Paraprocts asymmetrical; spine-like branch of right paraproct longer, bending forward at right angle; spine-like branch of left paraproct small and slightly curved (Fig. 1G). Subgenital plate nearly symmetrical, posterior margin rounded. Right stylus curved to the right. Left stylus curved to the left. Hooked phallomere on the left of subgenital plate, median phallomere slender and rodlike, with an irregular sclerite, right phallomere with an S-shaped sclerite (Fig. 1H).</p> <p> Diagnosis. This species is similar to <i>S. pyrrhocephala</i> in the shape of subgenital plate and styli. It differs from the species as follows: 1) pronotum with broad and indistinct U-shaped macula in the former, while pronotum with narrower and conspicuous U-shaped macula in the latter; and 2) left paraproct with a spine-like branch, slightly curved in the former, while left paraproct without a spine-like branch, only with three minute spines near apex in the latter (see Wang et Che 2010: 45 Figs. 32, 37).</p> <p>Etymology. The species name is derived from the Latin word “hamatus”, referring to the spine-like branch of right paraproct being hooked shape.</p> <p> <b>Holotype.</b> Male, Yunnan Province, Mongla County, Shangyong Township, Longmen Village, 8-V-2015, Jianyue Qiu leg. <b>Paratype.</b> 1 male, same collection data as holotype.</p>Published as part of <i>Qiao, Limin, Li, Qianqian, Yao, Wenwen, Wang, Zongqing & Che, Yanli, 2023, Three new species of Scalida (Blattodea: Blattellidae) from Yunnan, China, pp. 144-150 in Zootaxa 5306 (1)</i> on pages 146-147, DOI: 10.11646/zootaxa.5306.1.8, <a href="http://zenodo.org/record/8054406">http://zenodo.org/record/8054406</a>
Scalida ramiformis Qiao & Li & Yao & Wang & Che 2023, sp. nov.
No full text3. Scalida ramiformis Qiao & Che sp. nov. Description. Male: pronotum length×width 2.8–3.4× 3.7–4.2 mm, tegmen length 11.8–12.2 mm, body length including tegmen 14.2–14.5 mm. Body yellowish brown. Head yellowish brown, eyes dark or dark brown. Ocellar spots white. Antenna with first two segments yellowish brown; other segments dark brown. Fourth and fifth maxillary palpomeres brown, remainder of maxillary palpomere yellowish brown. Pronotum yellowish brown with a few sporadic, brown and symmetrically distributed spots. Tegmina pale reddish brown in middle part and lighter in the side borders. Vertex with interocular space equal to the distance between antennal sockets. Third and fifth maxillary palpomeres about equal length, each distinctly longer than the fourth. Pronotum nearly trapezoidal, hind margin slightly arched (Fig. 3A–B). Tegmina and hind wings fully-developed, extending beyond end of abdomen. M of hind wing unbranched and distinctly curved near middle. CuA with 3 complete branches and 2 incomplete branches (Fig. 3I). Front femur Type B3 (Fig. 3G). T7 specialized with a pair of nearly circular symmetrical glands in the middle, extending beyond the anterior margin of T7, and a small thumb-shaped knob with bristles at tips on each posterolateral corner (Fig. 3J). Supra-anal plate symmetrical, hind margin produced into two spine-like processes with 3–4 small teeth on each side, middle of hind margin slightly knobbed with two small teeth (Fig. 3E). Paraprocts asymmetrical; end of left paraproct with some small teeth; right paraproct irregular, front margin of right paraproct with small, stout and dense spines (Fig. 3E). Subgenital plate subsymmetrical with long and scattered setae around it. Hind margin of subgenital plate narrow with two big bifurcated styli. Hooked phallomere on the left of subgenital plate, median phallomere slender, rodlike, apex acute; right phallomere with an S-shaped sclerite (Fig. 3F). Diagnosis. This species is slightly similar to S. ectobiodes in the shape of pronotum and paraprocts. It differs from that species as follows: 1) two circular glands extending beyond the anterior margin of T 7 in the former, while two short and wide glands of T 7 in middle in the latter; and 2) both knobs of T7 with a cluster of setae in the former, while two knobs of T7 without setae in the latter (see Wang et Che 2010: 41 Fig. 17, 18). Etymology. The species name is derived from the Latin words “ramus” meaning “branch” and “forma” meaning “shaped” referring to the apex of the styli being bifurcated. Holotype. Male, Yunnan Province, Mongla County, Wangtianshu Scenic Area, 23-V-2016, Lu Qiu & Zhiwei Qiu leg. Paratypes. 1 male and 1 female, same collection data as holotype.Published as part of Qiao, Limin, Li, Qianqian, Yao, Wenwen, Wang, Zongqing & Che, Yanli, 2023, Three new species of Scalida (Blattodea: Blattellidae) from Yunnan, China, pp. 144-150 in Zootaxa 5306 (1) on pages 148-149, DOI: 10.11646/zootaxa.5306.1.8, http://zenodo.org/record/805440
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