152 research outputs found

    trans-Chlorido{3-chloro-2-[(1-naphth­yl)imino­meth­yl]phenyl-κ2 C 1,N}bis­(trimethyl­phosphane)nickel(II)

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    The title compound, [Ni(C17H11ClN)Cl(C3H9P)2], was obtained as a product of the reaction of [Ni(PMe3)4] with a molar equivalent of 2,6-dichloro-N-naphthyl­benzaldehyde­amine in diethyl ether. The τ parameter is 0.3, indicating that the coordination geometry is square-pyramidal. The NiII atom lies in the center of a square pyramidal in which one C, one Cl and two P atoms form the basal plane, with the imine N atom in an apical position. Two P-atom donors are located in trans positions

    trans-Bis(4-methoxy­thio­phenolato-κS)bis­(trimethyl­phosphine-κP)nickel(II)

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    The title compound, [Ni(C7H7OS)2(C3H9P)2], was obtained as a product of the reaction of [NiMe2(PMe3)3] with two molar equivalents of 4-methoxy­thio­phenol in diethyl ether. The compound is stable in the air for several hours, but rapidly decomposes at room temperature in solution. The Ni atom displays a square-planar coordination with two P-donor atoms lying in trans positions. The benzene rings of the thio­phenolate ligands are almost perpendicular to the square coordination plane, making dihedral angles of 80.43 (4) and 72.60 (4)°

    Razina industrijskog održivog razvoja u Kini i faktori utjecaja

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    This research aims to set up a comprehensive index system to evaluate the sustainable development level of the industrial sector in China and to determine the key influencing factors that hinder the sector’s sustainable development. To achieve these research goals, we build a theoretical model with 26 indexes selected from resource, environment, economy, and society subsystems. An empirical analysis is conducted through Principal Component Analysis and Structural Equation Modeling. Results indicate that the sustainable development level of China’s industrial sector became positive in 2007 and peaked in 2012. The environment subsystem has the largest effect on the sustainable development level. The sustainable development level is also greatly influenced by solid wastes, production of non-renewable resources, energy consumption per unit of gross domestic product (GDP), and industrial research and development (R&D) expenditure. The basic conclusion is that the sustainable development level of the industrial sector in China can be enhanced through improving the utilization efficiency of resources, increasing the contribution of technology progress to GDP, and developing renewable resources.Cilj ovog istraživanja je uspostaviti sveobuhvatan indeks sustava za procjenu razine održivog razvoja industrijskog sektora u Kini i odrediti ključne čimbenike koji sprječavaju održivi razvoj tog sektora. Za postizanje ovih znanstvenoistraživačkih ciljeva, izgradili smo model od 26 indeksa odabranih iz resursa, okoliša, gospodarstva i društvenih podsustava. Empirijska analiza provodi se pomoću analize glavnih komponenti i modeliranja strukturnih jednadžbi. Rezultati pokazuju da je razina održivog razvoja kineskog industrijskog sektora postao pozitivan 2007.godine, a vrhunac dosegnuo 2012. godine. Podsustav okoliša ima najveći utjecaj na razinu održivog razvoja. Razina održivog razvoja također je pod velikim utjecajem krutog otpada, proizvodnje neobnovljivih resursa, potrošnje energije po jedinici bruto domaćeg proizvoda (BDP-a) i troškova za industrijsko istraživanje i razvoj. Osnovni zaključak je da se razina održivog razvoja industrijskog sektora u Kini može poboljšati povećanjem učinkovitosti korištenja resursa, većim doprinosom tehnologijskog napretka u BDP-u i razvijanjem obnovljivih resursa

    Dichloridotris(trimethyl­phosphine)nickel(II)

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    The title compound, [NiCl2(C3H9P)3], was obtained as a product of the reaction of [NiCl2(PMe3)2] with an equivalent trimethyl­phosphine in diethyl ether. It easily loses trimethyl­phosphine at room temperature to give NiCl2(PMe3)2. There are two independent mol­ecules in the asymmetric unit, and their bond lengths and angles are similar. The Ni environment is trigonal bipyramidal. One Ni, one P and two Cl atoms lie in the equatorial plane, with the remaining two P atoms occupying axial positions. The equatorial Ni—P bond length is shorter than the axial bond lengths

    Change in marital satisfaction among Chinese couples during the early years of marriage: the roles of individual characteristics, couple interactive processes, and social network factors

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    Understanding couple relationship well-being and its key determinants is paramount given the substantial costs of marital distress to individuals, families, as well as the society. However, some groups of couples have been historically underrepresented in prior marriage research (e.g., Non-Western couples). Without investigating these groups of couples systematically, the diversity inherent within marriage cannot be adequately acknowledged. Furthermore, from a cultural sensitivity perspective, empirical findings and theoretical perspectives derived from studies of one certain group of couples are likely to be poorly suited to or even irrelevant to the life experiences of another group of couples. To somewhat fill this gap, a series of empirical studies were conducted in the present body of work to particularly examine how the variation in Chinese couples’ marital well-being over time could be accounted for by the complex, dynamic interplay among factors of different levels (e.g., individual characteristics, couple dyadic adaptive processes, and external contextual factors) based on the data from a recent longitudinal research project named Chinese Newlyweds Longitudinal Study (CNLS). The first study in the present body of work focused on the associations between spouses’ personal characteristics (i.e., neuroticism) and marital satisfaction and the mechanisms explaining why such associations might occur. Specifically, based on three annual waves of data obtained from 268 Chinese couples during their early years of marriage, this study tested an actor-partner interdependence mediation model in which spouses’ neuroticism was linked to the changes in their own and their partners’ marital satisfaction through both intrapersonal (i.e., marital attribution) and interpersonal (i.e., marital aggression) processes. Considering both intra and interpersonal processes simultaneously in a single model, a series of indirect pathways were identified: Wave 1 Husbands’ Neuroticism ? Wave 2 Husbands’ Negative Marital Attribution ? Wave 1 to Wave 3 Changes in Husbands’ Marital Satisfaction; and Wave 1 Wives’ Neuroticism ? Wave 2 Wives’ Negative Marital Attribution or Aggression ? Wave 1 to Wave 3 Changes in Wives’ or Husbands’ Marital Satisfaction. As such, this study not only adds to a limited body of research examining why neuroticism affects conjugal well-being, but also extends prior research by focusing on Chinese couples, utilizing a longitudinal, dyadic mediation model, and testing intra and interpersonal processes simultaneously. The findings also have important practical implications. That is, couples involving highly neurotic partners may benefit the most from interventions based on the cognitive-behavioral approaches. When working with couples bothered by neuroticism, practitioners need to help them address both dysfunctional interactive patterns and distorted cognitive styles. The second study in the present body of work sought to understand the associations between couple dyadic interactive processes (i.e., marital hostility) and marital satisfaction and the conditions under which such associations might vary. Specifically, based on both observational and self-report survey data obtained from 106 Chinese couples during their early years of marriage, this study linked marital hostility observed from multiple couple interactions to both the concurrent levels of and the subsequent changes in spouses’ reports of relationship satisfaction, and also examined how intrapersonal traits (i.e., self-esteem), relationship features (i.e., commitment), external environment factors (i.e., life event stress), and spouses’ avoidance tendency in marital problem resolutions may contextualize such associations. Results indicated that both the concurrent and the longitudinal actor and/or partner effects of marital hostility on marital satisfaction were moderated by spouses’ own and/or their partner’s self-esteem, commitment, life event stress, and avoidance. Furthermore, in general, whereas spouses’ own factors as moderators explained under what circumstances hostility may be harmful for relationship satisfaction, spouses’ partner’s factors as moderators determined when hostility can be beneficial for relationship satisfaction. Such findings highlight the importance of approaching the association between marital hostility and conjugal well-being from a dyadic, multilevel, and contextual perspective. The third study in the present body of work examined the associations between external contextual factors (i.e., parents’ attitude and in-law relationship quality) and marital satisfaction and how different social network factors might operate in conjunction with each other to shape conjugal well-being over time in Chinese marriage. Based on three annual waves of data obtained from 265 Chinese couples during the early years of marriage and utilizing an actor-partner interdependence mediation model with latent difference scores, this study examined the associations among parental attitude toward their adult children’s marriage, in-law relationship quality, and adult children’s marital satisfaction. Results indicated that when both husbands’ and wives’ parents’ attitude and relationship quality with mothers-in-law and with fathers-in-law were considered simultaneously in a single model, only two indirect pathways were still significant: husbands’ parents’ satisfaction with their adult children’s marriage was positively associated with the changes in both husbands’ and wives’ marital satisfaction via wives’ relationship quality with their mothers-in-law. Such findings not only suggest the particularly salient roles of husbands’ parents’ attitude and the relationship between daughters-in-law and mothers-in-law in predicting Chinese adult children’s marital well-being, but also highlight the importance of conceptualizing families as configurations of interdependent relationships across multiple households and examining marital well-being from ecological and social network perspectives. Taken altogether, the present body of work represents one of the very first steps in systematically understanding marital well-being and its determinants among Chinese couples. Findings of the three aforementioned studies have clearly demonstrated that Chinese couples’ relationship development over time is a product of the complex, dynamic intersections of individual characteristics, relational dynamics, and external contextual factors. Furthermore, findings of the present body of work may promote cultural sensitivity in marriage research by yielding important insights for developing culturally relevant frameworks for understanding marital issues in Asian countries

    DyTed: Disentangled Representation Learning for Discrete-time Dynamic Graph

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    Unsupervised representation learning for dynamic graphs has attracted a lot of research attention in recent years. Compared with static graph, the dynamic graph is a comprehensive embodiment of both the intrinsic stable characteristics of nodes and the time-related dynamic preference. However, existing methods generally mix these two types of information into a single representation space, which may lead to poor explanation, less robustness, and a limited ability when applied to different downstream tasks. To solve the above problems, in this paper, we propose a novel disenTangled representation learning framework for discrete-time Dynamic graphs, namely DyTed. We specially design a temporal-clips contrastive learning task together with a structure contrastive learning to effectively identify the time-invariant and time-varying representations respectively. To further enhance the disentanglement of these two types of representation, we propose a disentanglement-aware discriminator under an adversarial learning framework from the perspective of information theory. Extensive experiments on Tencent and five commonly used public datasets demonstrate that DyTed, as a general framework that can be applied to existing methods, achieves state-of-the-art performance on various downstream tasks, as well as be more robust against noise

    Interparental conflict and infants’ behavior problems: The mediating role of maternal sensitivity

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    Although the negative effect of interparental conflict on child behavior problems has been well established, few studies have examined this association during infancy. This study examined the associations between mother-reported interparental conflict and young children’s behavior problems over the first 2 years of their lives in a sample of 212 mothers and infants. Two aspects of maternal sensitivity, sensitivity during distressing and nondistressing contexts, were examined as possible mediators between interparental conflict and infants’ behavior problems. Results indicated that interparental conflict was associated directly with infants’ externalizing problems over time but was associated indirectly with infants’ internalizing problems over time via compromised maternal sensitivity within distressing contexts but not through maternal sensitivity within nondistressing contexts. No significant child gender differences were found. Such findings add to a limited body of research suggesting that the early interparental relationship context is relevant for infant adjustment. The salient mediating role of maternal sensitivity within distressing contexts provides important theoretical and practical insights for future studies

    Towards Cyber Security for Low-Carbon Transportation: Overview, Challenges and Future Directions

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    In recent years, low-carbon transportation has become an indispensable part as sustainable development strategies of various countries, and plays a very important responsibility in promoting low-carbon cities. However, the security of low-carbon transportation has been threatened from various ways. For example, denial of service attacks pose a great threat to the electric vehicles and vehicle-to-grid networks. To minimize these threats, several methods have been proposed to defense against them. Yet, these methods are only for certain types of scenarios or attacks. Therefore, this review addresses security aspect from holistic view, provides the overview, challenges and future directions of cyber security technologies in low-carbon transportation. Firstly, based on the concept and importance of low-carbon transportation, this review positions the low-carbon transportation services. Then, with the perspective of network architecture and communication mode, this review classifies its typical attack risks. The corresponding defense technologies and relevant security suggestions are further reviewed from perspective of data security, network management security and network application security. Finally, in view of the long term development of low-carbon transportation, future research directions have been concerned.Comment: 34 pages, 6 figures, accepted by journal Renewable and Sustainable Energy Review
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