ObjectiveThe goal of the study was to explore the relationship between parent–children relationships related to using the internet among kids and potentially associated factors.Materials and MethodsA sample of 1.216 Vietnamese students between the ages of 12 and 18 agreed to participate in the cross-sectional online survey. Data collected included socioeconomic characteristics and internet use status of participants, their perceived changes in relationship and communication between parents and children since using the internet, and parental control toward the child’s internet use. An (...) Ordered Logistic Regression was carried out to determine factors associated with parent–children relationship since using the internet.ResultsThe characteristics of the relationship between children and their parents since using the Internet were divided into three levels: deterioration, stability, and improvement. The topics that children most often communicate with their parents include learning, housework, and future directions. Two-way interactive activities, such as supporting parents to use the Internet, have a positive impact on the parent–child relationship. Stubborn parental control, such as establishing rules about contact or allowing Internet access and setting up global positioning system to track negatively affecting parent–child relationships.ConclusionFindings indicated that changes in the quality of the parent–child relationship were self-assessed by participants regard to kids’ internet use, especially in the COVID-19 epidemic context. Educational campaigns and programs to raise awareness of parents as to the dangers and negative influences that their children may encounter online, psychology of children’s behaviors and effects of different responding strategies are recommended. (shrink)

Engineering ethics can be divided into three spheres, namely the technical, the professional, and the social. Ideally, engineering students should engage with all three spheres of ethics, but the literature suggests that this might not be the case. How do engineering students engage with the three spheres of engineering ethics during a global pandemic? The COVID-19 pandemic represents a dramatic and ongoing real-world challenge affecting many students personally. This research explores the extent to which engineering students engage with each sphere (...) of engineering ethics by examining how engineering students understand their roles in addressing the pandemic and its implications. We conducted a survey with undergraduate engineering students (n = 410) at a university in the Midwest. Qualitative analysis suggests that there was low engagement with both social ethics and professional ethics among respondents, while there was higher engagement with technical ethics. Quantitative analysis suggests that non-conservative engineering students from less wealthy families in our study show higher engagement with technical ethics as compared to conservative engineering students from less wealthy families. Non-conservative engineering students from wealthy families, however, show similar engagement with technical ethics as compared to conservative engineering students from wealthy families. In addition, engineering students from both wealthy and less wealthy families show higher engagement with technical ethics if they reside in urban areas as compared to engineering students from both wealthy and less wealthy families in non-urban areas. In addition, the difference in terms of engagement with technical ethics between non-urban engineering students from less wealthy families and urban engineering students from less wealthy families is larger than the difference in terms of engagement with technical ethics between non-urban engineering students from wealthy families and urban engineering students from wealthy families. Further investigation will be needed to explain these findings. However, qualitative results confirm that, despite the potential for the pandemic to encourage engagement with all three spheres of ethics, there continues to be low engagement with ethics beyond the technical level. (shrink)

This article develops a discursive explanation of mixed constitution: mixed constitutional ideas and discourse generate mixed constitutional design and practice. On that base, it explores the nature, factors, and functions of the mixed constitution in Vietnam. The emergence of competing constitutional ideas (Confucian, socialist, liberal, universal) animates a constitutional discourse in which different actors adhere to different ideas. Consequently, the 2013 Constitution of Vietnam embodies a mixture of the ideas in its provisions on political institutions, economy, and especially human rights. (...) The enforcement of the constitution induces competing claims to constitutional meanings. The mixed constitution is shaped by path dependency and global diffusion of constitutional ideas. It functions as the base to constrain ideational monopoly and widen the public discourse on constitutional development. (shrink)

On November 7, 1594, an Assembly was held in the Monastery of St. Mary in Mat, and was attended by “Governors and General Guardians of the Macedonian and Albanian Kingdoms”. The Assembly was attended by leaders representing the Albanian provinces, such as: Gjergj Skura from Rodoni, Gjek Lalësi from Dukagjini, Vlash Koreshi from Kruja, Domenik Jonima from Mati, Jeronim Mamëli from Elbasan, and bishops of Stefaniakë and Sapas etc. A detailed project was drafted for the liberation of the country from (...) the Ottoman invaders, addressed to the Western nations, to the Pope, the Kingdom of Naples etc. in order to seek material and military support. The action plan and the demands examined during the assembly meeting were entrusted to Tomë Plezha as the almighty delegate of the Pope to the king of Spain and other European princes. It was thought that he had authority over the peoples of these parts. (shrink)

Traditional engineering courses typically approach teaching and problem solving by focusing on the physical dimensions of those problems without consideration of dynamic social and ethical dimensions. As such, projects can fail to consider human rights, community questions and concerns, broader impacts upon society, or otherwise result in inequitable outcomes. And, despite the fact that students in engineering receive training on the Professional Code of Ethics for Engineers, to which they are expected to adhere in practice, many students are unable to (...) recognize and analyze real-life ethical challenges as they arise. Indeed, research has found that students are typically less engaged with ethics—defined as the sensitivity and judgment of microethics and macroethics, sensitivity to diversity, and interest in promoting organizational ethical culture—at the end of their engineering studies than they were at the beginning. As such, many studies have focused on developing and improving the curriculum surrounding ethics through, for instance, exposing students to ethics case studies. However, such ethics courses often present a narrow and simplified view of ethics that students may struggle to integrate with their broader experience as engineers. Thus, there is a critical need to unpack the complexity of ethical behavior amongst engineering students in order to determine how to better foster ethical judgment and behavior. Promoting ethical behavior among engineering students and developing a culture of ethical behavior within institutions have become goals of many engineering programs. Towards this goal, we would like to present an overview of the current scholarship of engineering ethics and propose a theoretical framework of ethical behavior using a review of articles related to engineering ethics from 1997-2020. The review engages in theories across disciplines including philosophy, education, and psychology. In this work-in-progress paper, we present a subset of initial results based on a review of the first 50 articles out of the systematically selected 409 articles from Springer, Engineering Village, and EBSCO-Education Full Text. Preliminary results identify two major kinds of drivers of ethical behavior, namely individual level ethical behavior drivers and institutional drivers. Our preliminary results indicate that a sensitivity to both microethics and macroethics as well as the implicit and explicit understanding of ethics are essential in promoting ethical behavior amongst students. Furthermore, while drivers of ethical behavior at the individual level is important, one should not ignore the roles of the drivers of ethical behavior at the institutional level in promoting a collective ethical culture within organizations. The review also points to a need to focus on increasing students’ macroethical sensitivity to topics such as sustainability and protection of human rights. This research thus addresses the need, driven by existing scholarship, 2 to identify a conceptual framework for explaining how ethical judgment and behavior in engineering can be further promoted. (shrink)

Vietnam is a communist country. For a Marxist ideologue, “religion is the opium of the masses.” But many communist countries—over the years—have evolved from a strictly atheistic persuasion to a tolerance for religious practices. Except probably in North Korea, this transformation from an atheistic perspective to religious tolerance has become a phenomenon in communist countries like Russia and China.Vietnam did not have that experience. This paper will show that religious pluralism was tolerated, even accepted, in communist Vietnam. I will show (...) how vibrant this religious amalgamation is in Vietnam and demonstrate, as in the case of market economics thriving in communist countries, that Vietnamese communism and religious pluralism can robustly coexist with each other. (shrink)

Resumo: Arthur Schopenhauer possui uma concepção acerca da natureza do conceito que atravessa o seu pensamento, desde o início de sua produção filosófica. Inicialmente abordado a partir de sua acepção racional abstrata, em O mundo como vontade e como representação, o conceito adquire traços mais profundos em função do sentimento. O conceito “não-conceito” sentimento determinará os rumos da filosofia de Schopenhauer, ao evidenciar os limites da linguagem. A linguagem filosófica, por consequência, exprime um paradoxo, pois pretende expressar em linguagem abstrata (...) um conteúdo concreto cuja natureza não pode ser por ela determinado. Por ser um construto conceitual abstrato, a linguagem filosófica possui um estatuto ontológico secundário e, portanto, incompleto, em relação ao conteúdo da realidade concreta. Este artigo pretende mostrar que os sentimentos são, nesse sentido, o meio não conceitual que esclarece a própria natureza dos conceitos e, por consequência, a via não-filosófica que paradoxalmente melhor expressa o conteúdo da filosofia. No registro do sentimento, Schopenhauer reconhece na linguagem musical o âmbito de justificação adequado da linguagem filosófica.: Arthur Schopenhauer has a notion about the nature of the concept that runs through his thinking since the beginning of his philosophical production. Initially approached from its abstract rational meaning, in The world as will and representation, the concept acquires deeper traces from sentiment. The “non-concept” concept of sentiment will determine the direction of Schopenhauer”s philosophy by highlighting the limits of language. The philosophical language, therefore, expresses a paradox, since it intends to manifest, in abstract language, a concrete content, whose nature cannot be determined by it. As an abstract conceptual construct, philosophical language has a secondary and, thus, incomplete ontological status in relation to the content of concrete reality. Sentiments are the non-conceptual medium that clarifies the nature of concepts itself, and, consequently, the non-philosophical way that paradoxically best expresses the content of philosophy. In the recording of sentiment, Schopenhauer recognizes in musical language the proper justification scope of philosophical language. (shrink)

Religious beliefs are defined as thinking, feeling and behaving in accordance with the beliefs and teachings of a religious system. In other words, religious beliefs are indicative of the role of religion in the individual and social life of people, as well as adherence to values and beliefs in daily life, performing religious practices and rituals and participating in activities of religious organisations. Religious beliefs are a set of dos and don'ts, and values are considered one of the most important (...) psychological supports that can provide meaning in all moments of life and save a person from meaninglessness by providing explanatory support in specific situations. In addition, work conscience is defined as a feeling of inner commitment to comply with agreed-upon requirements for work. In other words, work conscience means heartfelt satisfaction and practical commitment to the tasks that a person is supposed to perform properly, in a way that there will be no negligence in performing the duty even if no supervisor oversees the activity. Given the significant role of nurses in hospitals, especially during the coronavirus disease 2019 (COVID-19) pandemic, the religious beliefs of healthcare employees have become more important. Therefore, the present study aimed to evaluate the effect of religious beliefs on the work conscience of 1800 Muslim nurses in Iraq during the COVID-19 pandemic in 2021. Standard questionnaires were applied to assess the respondents' religious beliefs and work conscience. In addition, data analyses (Cronbach's alpha, Pearson's correlation, etc.) were performed in Statistical Package for the Social Sciences (SPSS). According to the results, religious beliefs have a positive effect on nurses' work conscience (p = 0.822). CONTRIBUTION: The findings of this study showed that the employees of an organisation, especially nurses and healthcare staff, can rely on their religious beliefs and benefit from their advantages in order to strengthen their work conscience during a hard time such as the COVID-19 pandemic. (shrink)

Borrowed from metallurgy, the concept of fusion casting is a method in the study of the humanities. In light of fusion-casting, this paper reviews the longstanding weakness of comparative studies and the limitations of its naming. Because of the superficiality and farfetchedness in comparative studies, fusion-casting studies are imperative remedies so as to break the bondage of empiricism and analogies. In the trend of globalization, comparative studies will continue to play a role, but the inherent weakness, excessive use and the (...) low quality of such studies must be overcome. The case of fusion-casting studies is not intended to get rid of comparative studies. Rather, it is intended to increase the depth of the latter so that there shall be ground-breaking progresses and innovations. (shrink)

RESUMO O presente artigo tem por objetivo caracterizar a “metafísica prática ” em Schopenhauer. Segundo essa caracterização, a metafísica prática corresponde ao correlato prático da “metafísica teórica” e, desse modo, ao correlato empírico do discurso filosófico. Para Schopenhauer, isto equivale a afirmar a possibilidade de comprovação, via experiencia, da tese metafísica fundante de “O mundo como vontade e como representação”, a saber, da identidade metafísica da vontade subjacente aoplano da multiplicidade aparente. Por funcionar como uma espécie de prova empírica desta (...) tese metafísica, a metafísica prática é também Experimentalmetaphysik, isto é, “metafísica experimental”. ABSTRACT This article aims to characterize the “practicalmetaphysics” in Schopenhauer. According to this characterization, the practical metaphysics corresponds to the practical correlate of the “theoretical metaphysics” and thus to the empirical correlate of the philosophical discourse. For Schopenhauer, this is equivalent to affirm the possibility of proving, via experience, the metaphysical founding thesis of “The World as Will and Representation”, namely, the metaphysical identity of the will underlying the plane of apparent multiplicity. Due to the fact that itfunctions as a kind of empirical proof of this metaphysical thesis, the practical metaphysics is also Experimentalmetaphysik, that is, “experimental metaphysics”. (shrink)

This paper argues that the principles of spiritual traditions provide normative ‘standards of goodness’ within which practitioners evaluate meaningful work. Our comparative study of practitioners in the Buddhist and Quaker traditions provide a fine-grained analysis to illuminate, that meaningfulness is deeply connected to particular tradition-specific philosophical and theological ideas. In the Buddhist tradition, meaningfulness is temporal and rooted in Buddhist principles of non-attachment, impermanence and depending-arising, whereas in the Quaker tradition, the Quaker testimonies and theological ideas frame meaningfulness as eternal. (...) Surprisingly, we find that when faced with unethical choices and clashes between organizational normativity and spiritual normativity, Buddhist practitioners acknowledge the temporal character of meaningfulness and compromise their moral values, whereas in contrast, Quaker practitioners morally disengage from meaningless work. Our study highlights how normative commitments in different spiritual traditions can influence different levels of adaptability in finding work meaningful and stresses the central importance of normative commitments in meaningful work. Our study concludes with practical implications and future pathways for inter-disciplinary research. (shrink)

Scholars have paid so much academic attention to UPB in the past decade. However, there is lacking a quantitative review to uncover the relationship between UPB and its antecedents. To address this, we make a meta-analytic review about UPB. Specifically, we propose a theoretical framework of antecedents of UPB and test it using meta-analysis technology (k = 67, n = 20,957). We found moral disengagement, organizational identification, identification with supervisors, leader UPB, ethical judgments, psychological entitlement, transformational leadership, and job satisfaction (...) are positively related to UPB. Moral identity and taking responsibility are negatively related to UPB. Besides, ethical leadership, abusive supervision, and authoritarian leadership have double-edged sword effects on UPB. For ethical leadership, it increases UPB via LMX, on the other hand, it decreases UPB via moral disengagement. For abusive supervision and authoritarian leadership, they increase UPB via moral disengagement and decrease UPB via LMX meanwhile. We discuss the results of the current meta-analysis and put some future research directions. (shrink)

As a transitional economy, Vietnam has undergone tremendous changes over recent decades within a ‘fusion’ context that blends both traditional and modern values from its complex history. However, few studies have explored how contemporary issues in the context of Vietnam have brought both obstacles and skillful initiatives to managerial approaches to doing business. We draw on the concepts of social trust and institutional theory to explore how informal institutions such as religious forces can contribute to the development of individual trust (...) and whether individuals are willing to extend trust beyond familial networks. We contribute to the notion of a moral conception of trust by exploring how Buddhism in particular has initiated distinctive managerial approaches in the context of Vietnam, in response to dilemmas of social trust. Our findings highlight that as an informal institution, engaged Buddhism yields significant impact on the formation of social trust. We carried out in-depth interviews in Vietnam with 33 organizational leaders who were Buddhist practitioners, using thematic analysis to elucidate our findings and arguments. The study reveals how the incorporation of Buddhist principles has fostered context-sensitive, non-extreme, and reflexive managerial approaches to enhance morality as a response to social trust issues. (shrink)

We present our method for tackling a legal case retrieval task by introducing our method of encoding documents by summarizing them into continuous vector space via our phrase scoring framework utilizing deep neural networks. On the other hand, we explore the benefits from combining lexical features and latent features generated with neural networks. Our experiments show that lexical features and latent features generated with neural networks complement each other to improve the retrieval system performance. Furthermore, our experimental results suggest the (...) importance of case summarization in different aspects: using provided summaries and performing encoded summarization. Our approach achieved F1 of 65.6% and 57.6% on the experimental datasets of legal case retrieval tasks. (shrink)

This study explores the role of an informal institution—engaged Buddhism—in leadership responses to issues of bribery at the firm level in the context of Vietnam. In-depth interviews were carried out in Vietnam with 26 organizational leaders who were Buddhist practitioners. The leaders expressed a Buddhist-enacted utilitarian approach based on three context-associated mechanisms: karmic consequences, community and social well-being, and total detachment. These mechanisms manifest in leadership approaches based on the Middle Way, Skillful Means, and Emptiness. They are involved in forming (...) leaders’ perceptions about bribery issues and their enacting of contextual approaches to balance organizational means and ends in tackling ethical issues associated with bribery. The study also sheds light on moral struggles involved in the process of shaping and enacting a Buddhist-enacted utilitarian approach. (shrink)

We assessed the attitudes, perceptions, and stereotypes toward Latino immigrants among 247 mental health professionals across 32 U.S. states. We also randomly presented two versions of an attitude measure that varied in their references to immigrants. Participants reported that they did not agree with the anti-immigration law Arizona SB 1070 and other similar bills. Also, greater multicultural awareness was related to positive attitudes and fewer stereotypes toward immigrants. Furthermore, participants who were asked to think about “undocumented immigrants” viewed Latino immigrants (...) more positively than those who were asked think about “illegal aliens.” Findings show the continued need for multicultural awareness and competence training for mental health professionals, which align with the American Psychological Association’s Ethical Principles of Psychologists and Code of Conduct. Limitations and future directions for research are discussed. (shrink)

In Technology and the Lifeworld, Don Ihde advances what he calls “formalisms” for the ways in which we experience or relate to technology. In this article, I seek to clarify the grammar of Ihde’s formalisms. Ihde’s formalisms have not been the focus of scrutiny. Rather, they have largely been received in the literature as merely aphoristic or epigrammatical devices serving to clarify what can be explained in prose. My hypothesis is that Ihde’s formalisms do not merely serve an epigrammatical function (...) but rather admit of a generative grammar that extends his postphenomenological framework. I propose a notation that adheres to six rules of syntax that can be derived from Ihde’s framework. I show that the proposed notation makes explicit the inter-relations among hidden dimensions of human–technology relations. Relying on my notation, I also suggest that the so-called cyborg turn is actually a turn away from the unharnessed syntax of Ihde’s formalisms. (shrink)

Associated with the sharing economy, collaborative consumption behaviors often take place among customers. Different from the traditional consumption that customers purchase the product and own it, in the sharing economy, customers can access the product only for a particular period and the ownership of the product also belongs to the firm. In this paper, we develop a theoretical analysis model, and investigate the intrinsic connection between collaborative consumption and the sharing channel strategy. Adopting the sharing channel strategy, the firm has (...) a chance to expand the market demand and improve its profit. In addition, we examine the impacts of other influential factors on a firm’s decisions, such as the unit product cost, surplus-value, and service capability coefficient. (shrink)

Este trabalho consiste em um plano de aula elaborado através do projeto Residência Pedagógica. Ele está divido em três etapas. Na primeira etapa faço uma breve introdução, onde irei abordar a justificativa pedagógica, a metodologia e os materiais necessários para construir a aula. Em um segundo momento, apresento o plano de aula que foi divido em duas perspectivas a respeito da possibilidade de discutirmos os juízos de gosto (objetivismo estético e subjetivismo estético). Na terceira e última parte, trago um sucinto (...) relato de experiência da aplicação do plano, bem como algumas conclusões e reflexões que a experiência provocou. (shrink)

O presente ensaio tem por objetivo fazer apontamentos ontológicos acerca dos fundamentos da educação. Para tal, seguiremos a via do pensamento de Martin Heidegger, adentrando no âmbito da questão do ser. Para cumprir tal tarefa, subdividiremos o trabalho em três momentos distintos. Primeiramente, apresentaremos algumas críticas à educação como transmissão de conhecimento, como ensino humanista e como educação técnica. Após, apresentaremos alguns elementos basilares do pensamento heideggeriano. Por fim, faremos algumas reflexões e indicações de ordem hermenêutica e de ordem prática (...) sobre a educação afim de pensarmos a sua essência como um perpétuo exercício de espanto. (shrink)

In this chapter, we aimed at further characterizing the functional neuroanatomy of the human rapid eye movement (REM) sleep at the population level. We carried out a meta-analysis of a large dataset of positron emission tomography (PET) scans acquired during wakefulness, slow wave sleep and REM sleep, and focused especially on the brain areas in which the activity diminishes during REM sleep. Results show that quiescent regions are confined to the inferior and middle frontal cortex and to the inferior parietal (...) lobule. Providing a plausible explanation for some of the features of dream reports, these findings may help in refining the concepts, which try to account for human cognition during REM sleep. In particular, we discuss the significance of these results to explain the alteration in executive processes, episodic memory retrieval and self representation during REM sleep dreaming as well as the incorporation of external stimuli into the dream narrative. (shrink)

It is well known that the computational complexity of propositional knowledge base revision is at the second level of polynomial hierarchy. A way to solve this kind of problems is to introduce approximate algorithms. In this paper, an approximate approach is introduced for belief change. Operators, which satisfy the AGM rational postulates, are defined to change belief sets or belief bases. Furthermore, approximate algorithms to implement the revision of finite belief bases are presented. The time complexities of the approximate algorithms (...) shown in this paper are at lower level than the time complexities of the existed approaches in literatures, although they may not generate the optimal solution, and this is meaningful from the theoretical point of view. (shrink)

In this paper we present some algorithms for computing minimal conflicts. First of all we discuss the relationship between minimal conflicts and minimally inconsistent subsets. Then we introduce an algorithm for computing all minimally inconsistent subsets, which is applied to generating all minimal conflicts. Furthermore, an algorithm for computing all minimal conflicts using structured description is introduced, and its correctness is proved; its time complexity is also shown. The algorithm using structured description terminates in polynomial time for some special system, (...) such as the tree–structured systems. The algorithms are also complared with related works. (shrink)

Previous corporate social responsibility studies at the employee level have focused on the influence of CSR on employees’ positive attitudes and behavior. However, little attention has been paid to the relationship between CSR and unethical behavior and the underlying mechanism. Based on social information processing theory, this study investigates how CSR affects employee cheating via employees’ organizational identification and perceived supervisor moral decoupling. Additionally, this study discusses the moderating effect of employee bottom-line mentality on these relationships. We test this two-path (...) model using a sample of MBA students in China. The results indicate that both organizational identification and perceived supervisor moral decoupling mediate the relationship between CSR and cheating, and employee bottom-line mentality moderates the effect of CSR on perceived supervisor moral decoupling. Specifically, for employees low in bottom-line mentality, CSR has a significantly negative impact on perceived supervisor moral decoupling, but the same relationship is insignificant for employees with a strong bottom-line mentality. Overall, our results uncover the relationship between CSR and employee cheating and extend the understanding of the influence of CSR on employees. (shrink)

The original version of this article unfortunately contains an incorrect sentence.

BackgroundAdolescents’ engagement in daily physical activity brings multiple benefits, including reduction in obesity, improvement of mental health, and enhancement of cognitive function. While prior studies have examined the link between physical activity and cognitive function, little is known regarding the extent to which this relationship is shaped by health and wellbeing factors. This study examines how subjective wellbeing and general health mediate the relationship between adolescents’ physical activity and cognitive function.MethodsThis study estimates a parallel structural equation model using the Program (...) for International Student Assessment 2018 dataset. Specifically, a total of 63,228 15-year-old subjects in nine countries/economies satisfied the study inclusion criteria, including in Bulgaria, Georgia, Hong Kong, Ireland, Mexico, Panama, Serbia, Spain, and United Arab Emirates. Frequency of moderate physical activity was reported weekly; SWB and GH were assessed using an internationally validated multi-item standardized questionnaire. SWB was measured by students’ self-evaluated satisfaction with their health, life, and schooling. GH was measured by students’ physical health and mental health status. Cognitive function was modeled as a latent function consisting of plausible values derived using item response theory on reading, mathematics, and science achievement tests.ResultsFindings indicated that increase in weekly MPA was positively associated with higher levels of SWB, GH, and CF among the study subjects. Parallel mediation analyses revealed that more frequent weekly MPA had relatively large direct effects on CF, and indirect effects channeling through improvements in SWB and GH were non-trivial. Heterogeneity results showed that boosts to CF, associated with MPA, were larger for mathematics and science than for reading.ConclusionThis study used a large-scale international dataset to show that the positive relationship observed between MPA and CF among adolescents was robust, and that SWB and GH were two critical mediators through which physical activity positively bolster CF. (shrink)

This paper describes the investigations performed to better understand two-stage rotor speed matching in a contrarotating fan. In addition, this study develops a comprehensive measuring and communication system for a contrarotating fan using ZigBee network. The investigation method is based on three-dimensional RANS simulations; the RANS equations are solved by the numerical method in conjunction with a SST turbulence model. A wireless measurement system using big data method is first designed, and then a comparison is done with experimental measurements to (...) outline the capacity of the numerical method. The results show that when contrarotating fan worked under designed speed, performance of two-stages rotors could not be matched as the designed working condition was deviated. Rotor 1 had huge influences on flow rate characteristics of a contrarotating fan. Rotor 2 was influenced by flow rates significantly. Under large flow rate condition, the power capability of rotor 2 became very weak; under working small flow rate condition, overloading would take place to class II motor. In order to solve the performance mismatch between two stages of CRF under nondesigned working conditions, under small flow rate condition, the priority shall be given to increase of the speed of rotor 1, while the speed of rotor 2 shall be reduced appropriately; under large flow rate condition, the speed of rotor 1 shall be reduced and the speed of rotor 2 shall be increased at the same time. (shrink)