Current COVID-19 pandemic and previous SARS/MERS outbreaks have caused a series of major crises to global public health. We must integrate the large and exponentially growing amount of heterogeneous coronavirus data to better understand coronaviruses and associated disease mechanisms, in the interest of developing effective and safe vaccines and drugs. Ontologies have emerged to play an important role in standard knowledge and data representation, integration, sharing, and analysis. We have initiated the development of the community-based Coronavirus Infectious Disease Ontology (CIDO). (...) As an Open Biomedical Ontology (OBO) library ontology, CIDO is an open source and interoperable with other existing OBO ontologies. In this article, the general architecture and the design patterns of the CIDO are introduced, CIDO representation of coronaviruses, phenotypes, anti-coronavirus drugs and medical devices (e.g. ventilators) are illustrated, and an application of CIDO implemented to identify repurposable drug candidates for effective and safe COVID-19 treatment is presented. (shrink)

This study conducted a cross-sectional investigation of facial appearance dissatisfaction between patients before undergoing orthognathic surgery and a non-surgical sample to evaluate the potential influencing factors of facial appearance dissatisfaction. A sample of 354 participants completed a set of questionnaires concerning facial appearance dissatisfaction, interpersonal pressure, media pressure, and fear of negative appearance evaluation (112 patients, 242 controls). The patients reported higher facial appearance dissatisfaction, more media pressure, more interpersonal pressure, and a greater fear of negative appearance evaluation among others (...) than the control group. Moreover, regression analyses identified interpersonal pressure and fear of negative appearance evaluation as the main influencing factors on facial appearance dissatisfaction whether in the orthognathic patients or in the control groups. The associations between the perceptions of interpersonal pressure, fear of negative appearance evaluation, and facial appearance dissatisfaction support the possible utility of strengthening social experiences and psychological intervention in preventing and treating these appearance-concerns, especially for the orthognathic patients. (shrink)

This article suggests a new field of curriculum studies called “Curriculum Studies as Post Oriental Text” as an emerging inquiry of the global postcolonial curriculum studies. Based on readings of postcolonial theories, analysis of empirical studies of Asian curriculum practices, and author’s longtime postcolonial observation of South Korean curriculum scholarship, the article discusses five topics in details with a hope that more diverse and transgressive inquiry of Asian postcolonial curriculum studies will be developed and expanded among scholars of education in (...) Asia. (shrink)

The environmental quality and subjective environmental evaluations in urban open spaces are essential. In this study, the effects of building, green, and water landscapes, which are typical visual landscapes, on the subjective environmental evaluations in different seasons were analyzed by conducting questionnaire surveys and field measurements in a severely cold city. It was found that the visual landscapes significantly affected subjective environmental evaluations in winter and summer, but there were no effects in the transitional season. In summer, compared with the (...) building and green landscape, the thermal sensation vote in the water landscape was the lowest at 0.4, and the differences were 0.3∼1.0. However, the thermal comfort vote in the water landscape was found to be 0.6 times higher. In winter, the thermal sensation and comfort votes in the water landscape were the lowest, the average evaluation under different UTCI was –2.2, and the results were similar for the overall comfort evaluation. In addition, the subjects believed that green and water landscapes improved thermal comfort and had more significant effects on improving the environmental temperature in the three seasons. Additionally, visual landscape evaluations significantly affect subjective environmental evaluations in summer than in the winter and transitional season; the higher the visual landscape evaluation, the better the thermal and overall comfort. (shrink)

Objectives: The corona virus disease-2019 pandemic spread globally, and we aimed to investigate the psychosocial impact on healthcare workers in China during the pandemic.Methods: In this systematic review and meta-analysis, we searched seven electronic databases for cross-sectional studies on psychosocial impact on HWs in relation to COVID-19 from January 1, 2020 to October 7, 2020. We included primary studies involving Chinese HWs during the pandemic, and data were extracted from the published articles. Our primary outcome was prevalence of anxiety, depression, (...) and stress disorders. We pooled prevalence value with their 95% confidence interval using random effect models and assessed study quality on the basis of an 11-item checklist recommended by the Agency for Healthcare Research and Quality. The study protocol was registered in PROSPERO.Results: We identified 25 articles comprising a total of 30,841 completed questionnaires and 22 studies for meta-analysis. The prevalence of anxiety, depression, and stress disorders was 34.4%, 31.1%, and 29.1% for HWs. The pooled prevalence of anxiety disorders for HWs from late January to early February was 46.4%, significantly higher than those in mid-term February and after late February. The pooled prevalence of depression disorders for HWs from late January to early February was 46.5%, significantly higher than those in mid-term February and after late February. HWs working in Hubei Province had a higher prevalence of anxiety and a lower prevalence of depression than those working in other regions. Nurses had a higher prevalence of anxiety and depression than other HWs.Conclusions: About one-third of HWs in China suffered anxiety, depression, and stress at the early epidemic of COVID-19. HWs in Hubei Province, especially nurses, had a higher prevalence of psychological disorders. During the pandemic, a negative psychological state may persist in a proportion of Chinese HWs, fluctuating with the control of the pandemic. The long-term impact should continue to be observed. Attention should be paid to HWs for their psychological impact due to the pandemic.Systematic Review Registration: The study protocol was registered with PROSPERO. (shrink)

With the outbreak of the COVID-19 crisis, the public keeps getting epidemic-related information on the media. News reports on the increasing number of fatalities have exposed individuals to death, which causes negative emotional experiences such as tension, anxiety, and fear. This study aimed to investigate whether creativity could serve as an anxiety-buffer when mortality is salient. Based on previous findings, the present study utilized type of creative task and personal search for meaning as moderators. In Study 1, a 2 × (...) 2 between-subject design was utilized, and 168 subjects were randomly assigned to four experimental conditions. In Study 2, 221 subjects were recruited. The experimental procedure was similar to Study 1, except that the priming paradigm of mortality was changed and search for meaning was included as an additional moderating variable. State anxiety was measured as the dependent variable in both studies. Results of Study 1 showed that, while the benevolent creative task could buffer anxiety in the mortality salience condition, the malevolent creative task did not have the same effect. Furthermore, there was a significant interaction between mortality salience, type of creative task, and search for meaning in life on anxiety. In Study 2, the buffering function of benevolent creativity was more intense for participants with a higher level of search for meaning. Together, these findings reveal the influence of different types of creative tasks on individual anxiety levels under death priming conditions and the moderating effect of search for meaning in this relationship. Further, they suggest the need to focus on the role of creativity in terror management. (shrink)

Compared with the large number of studies on reading of children with hearing loss in alphabetic languages, there are only a very limited number of studies on reading of Chinese-speaking children with HL. It remains unclear how phonological, orthographic, and semantic skills contribute to reading fluency of Chinese school-age children with HL. The present study explored this issue by examining the performances of children with HL on reading fluency and three linguistic skills compared with matched controls with normal hearing. Specifically, (...) twenty-eight children with HL and 28 chronological-age-matched children with NH were tested on word/sentence reading fluency, phonological awareness which was composed of onset/vowel/lexical tone awareness, orthographic knowledge, and semantic competence which comprised animal word identification, pseudo-homophone detection, and word segmentation. Results showed that children with HL lagged behind their peers with NH in WRF/SRF and most of the phonological, orthographic, and semantic subskills except onset awareness and pseudo-homophone detection. Furthermore, the significant contributors to WRF differed between the two groups with PA being the significant contributor in the children with NH while OK being the significant contributor in the children with HL. However, the significant contributor to SRF did not differ between the two groups with SC being the only significant contributor. These results revealed not only between-group differences but also similarities in the relative contributions of PA, OK, and SC to reading fluency at both word and sentence levels, which has practical implications for developing better training programs to improve reading for children with HL. (shrink)

Slagging-off is an important preprocessing operation of steel-making to improve the purity of iron. Current manual-operated slag removal schemes are inefficient and labor-intensive. Automatic slagging-off is desirable but challenging as the reliable recognition of iron and slag is difficult. This work focuses on realizing an efficient and accurate recognition algorithm of iron and slag, which is conducive to realize automatic slagging-off operation. Motivated by the recent success of deep learning techniques in smart manufacturing, we introduce deep learning methods to this (...) field for the first time. The monotonous gray value of industry images, poor image quality, and nonrigid feature of iron and slag challenge the existing fully convolutional networks. To this end, we propose a novel spatial and feature graph convolutional network module. SFGCN module can be easily inserted in FCNs to improve the reasoning ability of global contextual information, which is helpful to enhance the segmentation accuracy of small objects and isolated areas. To verify the validity of the SFGCN module, we create an industrial dataset and conduct extensive experiments. Finally, the results show that our SFGCN module brings a consistent performance boost for a wide range of FCNs. Moreover, by adopting a lightweight network as backbone, our method achieves real-time iron and slag segmentation. In the future work, we will dedicate our efforts to the weakly supervised learning for quick annotation of big data stream to improve the generalization ability of current models. (shrink)

Working speed as a latent variable reflects a respondent’s efficiency to apply a specific skill, or a piece of knowledge to solve a problem. In this study, the common assumption of many response time models is relaxed in which respondents work with a constant speed across all test items. It is more likely that respondents work with different speed levels across items, in specific when these items measure different dimensions of ability in a multidimensional test. Multiple speed factors are used (...) to model the speed process by allowing speed to vary across different domains of ability. A joint model for multidimensional abilities and multifactor speed is proposed. Real response time data are analyzed with an exploratory factor analysis as an example to uncover the complex structure of working speed. The feasibility of the proposed model is examined using simulation data. An empirical example with responses and response times is presented to illustrate the proposed model’s applicability and rationality. (shrink)

Teacher education students, as an important reserve in the field of education, their growth and development are related to the future of science, economy, sustainable development of education. Through participation in the educational practice of STEAM, which integrates science, technology, engineering, art, and mathematics is more beneficial for them to acquire 21st century skills like communication, collaboration, learning innovation and critical thinking. However, little has been seen about the use and effectiveness of short videos in STEAM education activities and how (...) they can be used to support and promote teacher education students STEAM learning performance and sustainable inquiry behaviors. Therefore, this study combines the framework of triadic reciprocity determinism theory and technology acceptance theory to propose six research hypotheses and develop a research model to explore the relationship between collaborative self-efficacy, perceived usefulness of short videos, perceived ease of use, STEAM learning performance and teacher education students’ sustainable inquiry behavior. To achieve the purpose of this study, this study used purposive sampling and invited teacher education students from five classes of preschool education at a university in Guangxi Zhuang Autonomous Region, China, to participate in this study. A total of 8 h of instructional guidance was provided over a four-week period, in which participants used short videos for collaborative group learning and independent inquiry and applied STEAM concepts to kindergarten science activities. Participants’ STEAM performance was measured and surveyed during the fourth week. The results of the study validation showed that teacher education students CS-E had a positive effect on the PU and PEOU of short videos; Teacher’s education students PEOU of short videos had a positive effect on usefulness; Teacher’s education students PU and PEOU of short videos had a positive effect on STEAM learning performance; Teacher’s education students’ STEAM learning performance had a positive effect on sustainable inquiry behavior. (shrink)

It has been shown that reward motivation can facilitate proactive control, a cognitive control mode that is characterized of prior preparation and sustained holding of the goal-relevant information in working memory. However, it remains to be established the neural networks that may be involved in this promotion effect. In this study, participants underwent the AX-Continuous Performance Task (AX-CPT) that measures relative proactive control during functional magnetic resonance imaging (fMRI) scanning. We employed independent component analysis to decompose multiple brain networks and (...) identified the task related network. Results showed that the salience network (SN) was engaged in the AX-CPT protocol. Importantly, our data demonstrated that reward modulated the association between task engagement of SN and proactive control, whereby the positive correlation was particularly observed in the reward condition. Moreover, reward modulated task engagement of the SN in a proactive manner, which may contribute to the behavioral proactive performance. Overall, our data suggest the involvement of SN in the reward facilitation effect of proactive control. (shrink)

Purpose: Sensory feedback for prosthetics is an important issue. The area of forearm stump skin that has evoked tactile sensation of fingers is defined as the projected finger map, and the area close to the PFM region that does not have ETS is defined as the non-projected finger map. Previous studies have confirmed that ETS can restore the tactile pathway of the lost finger, which was induced by stimulation of transcutaneous electrical nerve stimulation on the end of stump skin. This (...) study aims to reveal EEG features between the PFM and the NPFM regions of the stumps under the same TENS stimulation condition.Methods: The PFM and NPFM regions of the two subjects were stimulated with the same intensity of TENS, respectively. TENS as target stimuli are modulated according to the Oddball paradigm to evoke the P300 components.Result: The PFM regions of both subjects were able to elicit P300 components, while their NPFM regions were not able to elicit P300 components. However, this P300 appears early and has continuous positive peaks in front of it.Discussion: N30 and P300 can prove that the two subjects with PFM can perceive and recognize ETS. The heteromorphisms of the P300 waveform may be related to the difficulty in subjects’ cognition of ETS or caused by the fusion of P150, P200, and P300. (shrink)

This study aims to decode the hemodynamic responses evoked by multiple sound-categories using functional near-infrared spectroscopy. The six different sounds were given as stimuli. The oxy-hemoglobin concentration changes are measured in both hemispheres of the auditory cortex while 18 healthy subjects listen to 10-s blocks of six sound-categories. Long short-term memory networks were used as a classifier. The classification accuracy was 20.38 ± 4.63% with six class classification. Though LSTM networks’ performance was a little higher than chance levels, it is (...) noteworthy that we could classify the data subject-wise without feature selections. (shrink)

This paper uses the Multidimensional Fatigue Inventory to investigate the fatigue status of pilots, and the reliability and validity of the scale are tested by Cronbach’s α and exploratory factor analysis. The founding shows that mild fatigue and above accounted for 67.7%. For further quantify the impact of different flights on pilots’ fatigue, research improves the fatigue coefficient model based on the results of pilot fatigue feeling questionnaire. Combined with multifactor analysis of variance and multiple linear regression, it is found (...) that the independent variables have different and positive effects on the dependent variables, and there is no multicollinearity. Through the actual test, its accuracy is improved by 16.7% compared with the original model. (shrink)

This paper investigates the transformative influence of generative AI on the arts, connecting it with Walter Benjamin's insights regarding the aura of art in the mechanical reproduction era. It scrutinizes how generative AI not only redefines art's traditional aura but also introduces a dynamic interplay between technological liberation and dependency. The analysis extends to the democratization of artistic expression and its broader societal impacts, highlighting a shift in art creation, perception, and interpretation in the digital age. This research encapsulates the (...) evolving nature of authenticity, creativity, and human–machine collaboration, marking a significant paradigm shift in art's conception and its role in society. (shrink)

洪耀勳是誰？是否有臺灣哲學？何謂臺灣哲學？何以洪耀勳的思想與實存哲學、日本哲學有深刻的關聯？哲學在東亞的接受與發展脈絡和洪耀勳的哲學思想有何關聯？洪耀勳的哲學思想能以何種形式和東亞的哲學發展產生關聯？ 其哲學思想有何種當代性意義？ 本書收錄洪耀勳日治時期的八篇哲學文章，撰寫年代在1934至1943十年之間，其中或隱或顯地援用日本京都學派哲學作為其哲學思索的資源。洪耀勳援引西田幾多郎「我和你」的理論，針對當時哲學發展的脈動，提出貼 近當代哲學需求的歷史實存概念。此外，他在探索臺灣文學創作的哲學理論時，亦以實存概念出發，主張新康德學派的價值哲學應與歷史實存形成呼應，藉以超越形而上學的價值世界。實存概念經洪耀勳的哲學探索，使得和辻哲 郎的風土論、務臺理作「表現世界的邏輯」、田邊元的「種的邏輯」等哲學資源，以一種「個別、特殊、普遍」的臺灣歷史實存姿態出現，並在異文化的臺灣，得到特殊性的發展。 Who is Hung Yao-hsün? Is there Taiwanese philosophy? What is Taiwanese philosophy? Why is Hung Yao-hsün’s thought deeply related to philosophy of existence and Japanese philosophy? What is the relationship between the reception and development of philosophy in East Asia and Hung Yao-hsün’s philosophical thought? In what form can Hung Yao-hsün’s philosophical thoughts be related to the development of philosophy in East Asia? What is the contemporary significance of his philosophical thinking? This book contains eight philosophical articles written (...) by Hung Yao-hsün between1934-1943, when Taiwan was under Japanese rule. These papers show implicit and explicit references to Kyoto School philosophy, which is a resource for his philosophical thinking. In response to the philosophical development at that time, Hung develops the notion of historical existence by citing Nishida’s theory of I and Thou. Besides, he explores the concept of existence as the philosophical foundation of Taiwanese literature, and argues the philosophy of value of Neo-Kantianism should echo the historical reality in order to overcome the metaphysical world of value. Hung’s philosophy deepens the concept of existence, and transforms the philosophical resources of Watsuji’s theory of Fūdo, Mutai Risaku’s logic of world expression and Tanabe’s logic of species into Taiwan’s historical reality of “individuality, particularity and universality;” these philosophies developed into a new dimension in Taiwan, a culture alien to Japan. (shrink)

In response to the COVID-19 pandemic, Korean society has sought to vaccinate most of its population. Consequently, the Korean government has attempted to make vaccination compulsory by promoting awareness of its benefits. The administration has pushed for mandatory vaccination by claiming that vaccination is more beneficial than harmful, based on a utilitarian view. However, this view is difficult to justify based on the two levels of utilitarianism presented by R. M. Hare. Compulsory vaccination cannot satisfy the universalizability, nor the satisfaction (...) of preference, and exposes the difficulties of utilitarianism. In addition, mandatory vaccination is difficult to justify based on the perspective of fairness theory, that is, “justice as the fairness” of John Rawls and H. L. A. Hart’s principle of fairness. From the point of view of Hare’s utilitarianism and fairness theory, it has been shown that mandatory vaccination is not easily justified. In reality, the power of the state continues to strengthen, and we should examine this situation from a critical point of view. (shrink)

This study attempts to examine the relationship between environment, social, and governance management and financial performance and the role of socially responsible investment in the National Pension Fund, Korea’s largest institutional investor. This study tries to provide evidence for the slack resource hypothesis by verifying whether companies with higher financial performance make more efforts to improve ESG performance. In addition, we tried to validate whether NPF is expanding its investments in corporations with high economic performance and high ESG performance. Based (...) on our analysis, Korean companies with good financial performance actively participate in ESG. When we compared the performance between 2019 and 2020, companies with high ESG performance increased regardless of financial performance level, whereas companies with high financial performance and low ESG performance decreased. This represents that the perception and attitude of Korean companies toward ESG management are evolving. NPF has a high investment ratio for firms having a high ratio in both financial and ESG performance. NPF further invested in companies with high ESG performance, even if the financial performance is not decent. This study provides evidence that Korean companies’ interest in ESG management as well as the behavior of socially responsible investment of NPF are rising. (shrink)

According to the reports in the past decade, some Asian subcontractors, mainly Taiwan, Hong Kong and Korea transnational corporations, tend to be labor abusive in their overseas investment destinations like China or Southeast Asia. Taking Vietnam as an example, this paper raises questions as to why Taiwanese transnational companies can control workplace unions in a trade-union-supportive regime. Given the government s constraint of political rights, and the individualized workplace unions, the function of trade unions in Vietnam is destined to (...) be limited. The trade unions turn out be an arm of management, rather than representing workers interests in these transnational companies. This article also explores the influence of the newly developed codes of conducts from Western buyers. In the survey of three companies which are required to follow the codes of conduct by buyers, trade unions had no more freedom than those in companies without codes of conduct. The paper discusses the implications of this research, offering strategies for labor rights improvements. (shrink)

The following framework of theses, roughly hewn, shapes contemporary discussion of the problem of mental causation: (1) Non-Identity of the Mental and the Physical Mental properties and states cannot be identified with specific physical properties and states. (2) Causal Closure (Completeness) of the Physical The objective probability of every physical event is fixed by prior physical events and laws alone. (This thesis is sometimes expressed in terms of explanation: In tracing the causal history of any physical event, one need not (...) advert to any non-physical events or laws. To the extent that there is any explanation available for a physical event, there is a complete explanation available couched entirely in physical vocabulary. We prefer the probability formulation, as it should be acceptable to any physicalist, though some reject the explanation formulation.) (3) Causal Exclusion There is at most one complete and wholly independent explanation for any given event or sequence of events. (shrink)

It has been contended that ostracism is prevalent in the workplace, and there has been increasing research interest in its potential effects. This paper extends the theoretical framework of workplace ostracism by linking it with affective commitment and intention to leave from the perspective of job embeddedness. Using time-lagged data from China, we apply job embeddedness theory to confirm that workplace ostracism decreases the cultivation of job embeddedness, which in turn undermines affective commitment and induces intention to leave. We also (...) find that intrinsic work motivation strengthens the detrimental effects of workplace ostracism on job embeddedness such that the negative relationship is stronger when intrinsic motivation is high rather than low. We further discuss the theoretical and practical implications of our findings and offer future research directions. (shrink)

Due to the current COVID-19 pandemic, colleges and universities have implemented network teaching. E-learning engagement is the most important concern of educators and parents because this will directly affect student academic performance. Hence, this study focuses on students’ perceived family support and their e-learning engagement and analyses the effects of e-learning normative consciousness and behaviours and self-efficacy on the relationship between family support and e-learning engagement in college students. Prior to this study, the relationship between these variables was unknown. Four (...) structural equation models revealed the multiple mediating roles of e-learning normative consciousness and behaviours and self-efficacy in the relationship between family support and e-learning engagement. A total of 1317 college students (mean age = 19.51; 52.2% freshman) voluntarily participated in our study. The results showed that e-learning normative consciousness and behaviours and self-efficacy played significant and mediating roles between students’ perceived family support and their e-learning engagement. Specifically, these two individual variables fully mediated the relationship between students’ perceived family support and their e-learning engagement. The multiple mediation model showed that family members can increase family support of their children by creating a household environment conducive to learning, displaying positive emotions, demonstrating the capability to assist their children, advocating the significance of learning normative consciousness and behaviours and encouraging dedicated and efficient learning. The findings complement and extend the understanding of factors influencing student e-learning engagement. (shrink)

This paper investigates the drivers and inhibitors of Internet privacy concern. Applying the Multidimensional Development Theory to the online environment, we identify the important factors under four dimensions—i.e., environmental, individual, information management, and interaction management. We tested our model using data from an online survey of 2417 individuals in Hong Kong. The results show that the factors under all four dimensions are significant in the formation of Internet privacy concern. Specifically, familiarity with government legislation, Internet knowledge, benefit of information (...) disclosure, privacy protection, and social presence reduce Internet privacy concern, while individuals’ previous privacy invasion experience, risk avoidance personality, and sensitivity of information requested by websites increase Internet privacy concern. We conducted an analysis of unobserved heterogeneity to confirm the significance of these factors. A follow-up moderation analysis shows that the individual factors moderate the effects of the information management factor and the interaction management factors. The findings provide an integrated understanding of the formation of Internet privacy concern. (shrink)

Recent research suggests there may be a link between religiousness and business ethics. This study seeks to add to the understanding of the relationship through a questionnaire survey on Malaysian Christians in business. The questionnaire taps into three different constructs. The religiousness construct is reflected in the level of participation in various common religious activities. The love of money construct is captured through the Love of Money Scale as used in Luna-Arocas and Tang [Journal of Business Ethics 50 (2004) 329]. (...) Response to 25 business vignettes taken from Conroy and Emerson [Journal of Business Ethics 50 (2004) 383] would surface ethical attitudes. A convenience sample of 300 was drawn from three large churches in the Kuala Lumpur area each with a congregation exceeding 1000 together with some representation from the smaller churches. The study finds some differences in the ethical attitudes of Malaysian Christians in business with different levels of religiousness. The study also finds that those longer in the faith are less accepting of unethical behavior. As such it can be concluded that there are ethical attitude differences between Christians in business with different levels of religiousness. This lends support to the claim of a positive relationship between religion and business ethics. The more significant finding is that even within a somewhat homogenous religious group there are different love of money profiles resulting in significant differences in ethical attitudes. This suggests that moderating money attitudes can contribute towards stronger ethical attitudes. (shrink)

Hong Kong is undergoing a public debate on the need to reform and future directions of reforming its health care system. This paper highlights the debates and considerations brought up by the Hospital Authority, the largest provider of public health care in Hong Kong, on the ethical principles and societal values underlying the upcoming reform. It is recognized that the exact meanings behind each ethical principle and value must be debated and clarified during the reform process. In a (...) modern day society like Hong Kong, societal values are likely to be diversified. A health care system also has to fulfil different and often conflicting objectives of equity, efficiency, quality and choice. It would be difficult for a health care system to satisfy these different values and objectives based on a single value parameter. The Hong Kong experience shows that a society may prefer a combination of strategies in addressing different societal values. The re-structuring of the health care system in Hong Kong should therefore be based on a balanced and optimum combination of various financing and delivery strategies. (shrink)