9 results on '"A, Naumann"'
Search Results
2. Perceived Work Uncertainty and Creativity During the COVID-19 Pandemic: The Roles of Zhongyong and Creative Self-Efficacy.
- Author
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Tang, Chaoying, Ma, Huijuan, Naumann, Stefanie E., and Xing, Ziwei
- Subjects
COVID-19 pandemic ,EMPLOYEE motivation ,SELF-efficacy ,JOB stress ,COVID-19 - Abstract
Research on the relationship between work stress and employee creativity has been mixed. This study on 823 female attorneys in China identifies employee creative self-efficacy and employees' value of Zhongyong as moderators in this relationship. In this study, work stress is assessed by the perceived work uncertainty brought on by the COVID-19 pandemic. Our study found that although Zhongyong, which involves an employee's ambidextrous thinking, can be helpful for employee creativity, low levels of Zhongyong are better for employee creativity in an uncertain context such as the COVID-19 pandemic, due to the fact that high levels of Zhongyong result in an overemphasis on compromise and giving in when times are uncertain. Instead, low levels of Zhongyong will decrease employees' concern about others' acceptance in an uncertain environment. In addition, creative self-efficacy motivates employees to engage in creative efforts during times of work uncertainty. In sum, this study found that employee perceived work uncertainty brought on by COVID-19 enhances employee creativity when an employee's value of Zhongyong is low and creative self-efficacy is high. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
3. The effects of creative personality on scientist creativity.
- Author
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Tang, Chaoying, Xu, Jiabing, Mao, Shibo, and Naumann, Stefanie E.
- Subjects
CREATIVE ability ,PERSONALITY ,CREATIVE ability in science ,SOCIAL scientists ,PERSONALITY studies ,GROUP identity - Abstract
• Creativity is not solely determined by traits. • Creative people require certain contexts to fully realize their potential to create. • Personality interacts with social factors to affect creativity. Does a creative personality make scientists more creative? Previous research on creative personality, creative behavior, and performance has been mixed, with not all studies reporting a consistent positive relationship. We propose that this is, in part, because creativity is not solely determined by traits; instead, creative individuals require a specific context to fully realize their potential to create. Using trait activation theory, we show that, as scientific creativity is becoming more dependent on teamwork, creative personality interacts with scientists' social identities and collaborative behavior to affect scientists' creativity. Multisource data collected from 547 scientists from 36 research institutes in China revealed that two dimensions of scientists' creative personality (research ability and uniqueness) exhibited a positive effect on their creativity whereas two other dimensions of their creative personality had a negative effect (self-discipline) or no effect (self-verification) on their creativity. In addition, the breadth of research communication, expertise identity, and organizational identity exhibited positive moderating effects on creative personality and scientist creativity. Specifically, when research communication breadth was high, self-discipline boosted scientist creativity; when expertise identity was high, self-verification boosted scientist creativity; and when organizational identity was high, the uniqueness dimension of scientist personality boosted scientist creativity. We discuss implications for theory and practice. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Group Citizenship Behaviour: Conceptualization and Preliminary Tests of its Antecedents and Consequences.
- Author
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Xiao-Ping Chen, Lam, Simon S. K., Naumann, Stefanie E., and Schaubroeck, John
- Subjects
ORGANIZATIONAL behavior ,GROUP problem solving ,TEAMS in the workplace ,INTERGROUP relations ,COOPERATION ,INDUSTRIAL relations ,BANKING industry - Abstract
Group citizenship behaviour (GCB) is conceptualized as a distinct group-level phenomenon concerning the extent to which work groups engage in behaviours that support other work groups and the organization as a whole. These behaviours are different from task performance; they enhance and maintain the social and psychological environment in which task performance occurs. Based on the referent-shift consensus model ( ), we developed a GCB scale and examined its nomological network. In a sample of 148 work groups in the Hong Kong office of a multinational bank (a total of 743 employees), between-group differences in GCB were greater than within-group differences. GCB was positively associated with procedural justice climate and work group leadership support. Work group cohesiveness and group-organizational goal congruence interactively predicted GCB, as did the negative affective tone of the group and the group's negative affectivity homogeneity. In addition, GCB was positively related to group performance, and negatively related to employee turnover intentions. The theoretical and empirical implications of this study are discussed in the context of Chinese organizations. [ABSTRACT FROM AUTHOR]
- Published
- 2005
- Full Text
- View/download PDF
5. Occurrence and ecological risk assessment of neonicotinoids and related insecticides in the Bohai Sea and its surrounding rivers, China.
- Author
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Naumann, Tanja, Bento, Célia P.M., Wittmann, Andreas, Gandrass, Juergen, Tang, Jianhui, Zhen, Xiaomei, Liu, Lin, and Ebinghaus, Ralf
- Subjects
- *
NEONICOTINOIDS , *ECOLOGICAL risk assessment , *INSECTICIDES , *PHENYLPYRAZOLES , *FIPRONIL , *THIACLOPRID , *IMIDACLOPRID - Abstract
• Pollution of coastal areas with neonicotinoids and fipronil originate from riverine inputs. • Acetamiprid and thiacloprid were abundant in seawater, indicating their persistence in surface waters. • Photodegradation products of fipronil and imidacloprid were highly abundant in seawater. • Fipronil and its TPs represent a potential high risk to freshwater and marine species. • This study is the first to assess an ecological risk of the investigated insecticides in marine ecosystems. Systemic insecticides like neonicotinoids and the phenylpyrazole insecticide fipronil are the most widely applied insecticides around the world. Multiple studies analyzed insecticide residues in freshwater systems, but data on seawater contamination levels are scarce. This study investigates the spatiotemporal distribution and ecological risk assessment of fipronil, neonicotinoids, sulfoxaflor and selected transformation products (TPs) in the Chinese Bohai Sea and its surrounding rivers. Well-established neonicotinoids (acetamiprid, clothianidin, imidacloprid, thiacloprid and thiamethoxam) and TPs of fipronil and imidacloprid were frequently detected (detection frequency (DF): 42-100%) in freshwater. The median total insecticide concentration in freshwater was significantly higher in summer (72.4 ng•L-1) than in fall (23.4 ng•L-1), with major contributions from neonicotinoids, suggesting that pollution originates mostly from diffuse sources. In 2018, acetamiprid, desnitro-imidacloprid, fipronil-desulfinyl and thiacloprid were abundant in seawater (DF: 47–100%), indicating a high stability of acetamiprid and thiacloprid and a rapid photodegradation of fipronil and imidacloprid in surface waters. These results indicate that the continued use of these parent compounds may lead to their accumulation and/or of their TPs in shallow coastal seas. Consequently, this may lead to their transport to open seas, increasing their potential risk to marine organisms. Similarities between contaminant fingerprints in freshwater and seawater strongly suggest riverine discharges as main pollution source of adjacent coastal areas. This is the first study to perform an ecological risk assessment of fipronil, neonicotinoids, sulfoxaflor and selected TPs on marine ecosystems. Fipronil and its TPs demonstrated to be environmentally relevant with potential high risks for aquatic species. Our study provides novel insights into the fate and ecological risk of fipronil, neonicotinoids, sulfoxaflor and their TPs to marine species in shallow coastal seas. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
6. Standing out in China's private equity market: An interview with Frank Su.
- Author
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Baan, Wouter and Naumann, Ivo
- Subjects
STOCK exchanges ,PRIVATE equity ,BUSINESS education ,EXECUTIVES ,BUSINESS development - Published
- 2020
7. A playbook for private equity success in China: An interview with Jean Salata.
- Author
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Baan, Wouter and Naumann, Ivo
- Subjects
PRIVATE equity ,BUSINESSPEOPLE ,BEHAVIOR ,INDUSTRIAL management ,FINANCIAL leverage - Published
- 2020
8. In search of alpha: Updating the playbook for private equity in China.
- Author
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Baan, Wouter, Leung, Nick, Naumann, Ivo, Pandit, Vivek, and Ramsbottom, Oliver
- Subjects
PRIVATE equity ,BEHAVIOR ,VENTURE capital - Published
- 2020
9. Phytochemical and antimicrobial characterization of Macleaya cordata herb
- Author
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Kosina, Pavel, Gregorova, Jana, Gruz, Jiri, Vacek, Jan, Kolar, Milan, Vogel, Mathias, Roos, Werner, Naumann, Kathrin, Simanek, Vilim, and Ulrichova, Jitka
- Subjects
- *
ALKALOIDS , *PLANTS , *PAPAVERACEAE , *MEDICINAL plants , *BIOLOGICAL assay , *ALTERNATIVE medicine , *ANALYSIS of variance , *ANTI-infective agents , *BIOPHYSICS , *ESCHERICHIA coli , *FRUIT , *HIGH performance liquid chromatography , *LEAVES , *LIQUID chromatography , *MASS spectrometry , *RESEARCH methodology , *MICROBIAL sensitivity tests , *POLYPHENOLS , *PSEUDOMONAS , *RESEARCH funding , *SEEDS , *STAPHYLOCOCCUS aureus , *STREPTOCOCCUS , *VEGETABLE oils , *PHYTOCHEMICALS , *PLANT extracts , *PHARMACODYNAMICS - Abstract
Abstract: Macleaya cordata (plume poppy) is a source of bioactive compounds, mainly isoquinoline alkaloids which are used in phytopreparations with anti-inflammatory and antimicrobial activities. In this study, the alkaloids sanguinarine, chelerythrine, their dihydro derivatives, protopine and allocryptopine and phenolics, gallic, protocatechuic, p-hydroxybenzoic, m-hydroxybenzoic, gentisic, p-coumaric, caffeic, ferulic and sinapic acids were determined in extracts prepared from M. cordata aerial part, seeds, and seed capsules using HPLC with UV detection and/or LC/MS with electrospray ionization. The highest content of sanguinarine and chelerythrine was found in capsules. Protopine and allocryptopine were major alkaloids in leaves including footstalks. The seed oil contained dihydrosanguinarine, dihydrochelerythrine and twelve fatty acids of which linoleic, oleic, palmitic and stearic acids predominated. In addition, sanguinarine reductase, a key enzyme in sanguinarine/dihydrosanguinarine equilibrium in plants, was found for the first time, in the soluble proteins of leaves. Finally, extracts were tested for antimicrobial activity using the microdilution method on standard reference bacterial strains. [Copyright &y& Elsevier]
- Published
- 2010
- Full Text
- View/download PDF
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