Relevant bibliographies by topics / Destructive behaviour

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Destructive behaviour'

Author: Grafiati
Published: 10 September 2021
Last updated: 27 April 2022

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Journal articles on the topic "Destructive behaviour"

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Yeruham, I., and A. Hadani. "Self-destructive behaviour in ruminants." Veterinary Record 152, no. 10 (March 8, 2003): 304–5. http://dx.doi.org/10.1136/vr.152.10.304.

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Yeruham, I., and O. Markusfeld. "Self destructive behaviour in dairy cattle." Veterinary Record 138, no. 13 (March 30, 1996): 308. http://dx.doi.org/10.1136/vr.138.13.308.

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Cichecka-Wilk, Małgorzata. "Anorexia Nervosa as a Manifestation of Self-Destructive Tendencies in the Light of Selected Psychodynamic Concepts – Towards the Promotion of Knowledge among Parents and Caregivers." Yearbook of Pedagogy 43, no. 1 (December 1, 2020): 227–40. http://dx.doi.org/10.2478/rp-2020-0014.

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Summary Anorexia nervosa, which is one of the forms of eating disorders, can be considered as a manifestation of a long and very complex process of self-destruction. Although its genesis is usually associated with puberty problems, it is rarely a rapid phenomenon. It should be treated rather as a kind of epilogue of one’s personal history. Malnutrition and weight control appearing in its context are in fact a manifestation of an attempt to cope with the hardships experienced by individual. Therefore, the anorexia nervosa is not just a problem of weight or eating habits, but it’s a way of manifesting the internal problem of the individual. Its form, defined by the otherwise valid canons of beauty or success, and consolidated by behaviours learned during the use of slimming diets, is revealed, however, in connection with specific personality traits. That is why the importance of people with this disorder, to a large extent, of tendencies to self-destructive behaviour, leading more or less consciously to self-destruction and in extreme cases to death, is emphasized. The article deals with the problem of anorexia nervosa as a manifestation of self-destructive tendencies and the issue of factors and mechanisms conditioning the occurrence of self-destructive behaviour from the perspective of selected psychodynamic concepts, indicating the importance of the issue for the care and educational processes.
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Nyman, A. K., and H. Jonsson. "Patterns of self-destructive behaviour in schizophrenia." Acta Psychiatrica Scandinavica 73, no. 3 (March 1986): 252–62. http://dx.doi.org/10.1111/j.1600-0447.1986.tb02682.x.

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Shaw, James B., Anthony Erickson, and Farzaneh Nassirzadeh. "Destructive leader behaviour: A study of Iranian leaders using the Destructive Leadership Questionnaire." Leadership 10, no. 2 (April 8, 2014): 218–39. http://dx.doi.org/10.1177/1742715013476082.

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Einarsen, Ståle, Merethe Schanke Aasland, and Anders Skogstad. "Destructive leadership behaviour: A definition and conceptual model." Leadership Quarterly 18, no. 3 (June 2007): 207–16. http://dx.doi.org/10.1016/j.leaqua.2007.03.002.

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Sutton, Adrian. "Psychodynamics of self-directed destructive behaviour in adolescence." Advances in Psychiatric Treatment 4, no. 1 (January 1998): 31–38. http://dx.doi.org/10.1192/apt.4.1.31.

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The Government white paper ‘Health of the Nation’ set a target for reduction of suicide rates by 15% by the year 2000. Although the document did not make specific reference to adolescence, it is no less important an issue in this age group than in adulthood since, along with accidental death and malignancy, suicide is one of the most common causes of death in late adolescence and early adulthood and there is an upward trend (Diekstra, 1993; McClure, 1994; Diekstra et al, 1995). How the reduction should be achieved is not clear, since suicide is a rare event which is the culmination of complex processes, and present knowledge does not give a firm foundation for evidence-based practice (Gunnell & Frankel, 1994).
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Narayanan, Kanimozhi, and Susan E. Murphy. "Conceptual Framework on Workplace Deviance Behaviour: A Review." Journal of Human Values 23, no. 3 (July 28, 2017): 218–33. http://dx.doi.org/10.1177/0971685817713284.

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This article aims to highlight the importance of organizational climate with both destructive and constructive deviance behaviour in different cultural setting with workplace as a common ground. First, we discuss the need for research in workplace deviance especially destructive and constructive deviance behaviour with the review of previous studies from deviance literature. Next, we present the importance of climate and culture with both destructive and constructive deviance by proposing relationship among them with the help of a framework. The presented theoretical framework can be useful for conducting future empirical research. Finally, we present the conclusion and future research in conducting cross-national research with respect to deviance.
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Ishii, Ryuta. "Conflict management in dual distribution channel systems: the moderating role of learning capabilities." Journal of Asia Business Studies 14, no. 4 (February 12, 2020): 525–40. http://dx.doi.org/10.1108/jabs-02-2019-0052.

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Purpose In dual distribution channel systems, integrated channels (manufacturer-owned) and independent channels (distributor-owned) are likely to adopt destructive behaviours. To suppress such behaviours, manufacturers need to implement conflict management systems. The purpose of this study is to examine the moderating role of conflict-learning capability (CLC) in the relationship between conflict management system and destructive behaviour. This study also investigates whether interactions between conflict management systems and CLC improve the overall channel performance. Design/methodology/approach Using survey data from 157 Japanese industrial manufacturers, this study conducted regression analyses and mediation analyses. Findings The results show that boundary and compensation systems have different effects on destructive behaviours. On the one hand, compensation systems with strong CLC have a larger impact, although those with weak CLC can also suppress destructive behaviours to some degree. On the other hand, boundary systems with strong CLC suppress destructive behaviours, but those with weak CLC do not. In addition, this study reveals that manufacturers with strong CLC can indirectly improve overall channel performance by implementing conflict management systems and suppressing destructive behaviours. Originality/value Previous studies reveal that boundary and compensation systems suppress destructive behaviours. However, these studies neglect the importance of organisational capability in the successful implementation of conflict management systems. By focusing on CLC, this study advances our understanding of dual distribution and channel conflict.
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Dubo, Elyse D., Mary C. Zanarini, Ruth E. Lewis, and Amy A. Williams. "Childhood Antecedents of Self-Destructiveness in Borderline Personality Disorder." Canadian Journal of Psychiatry 42, no. 1 (February 1997): 63–69. http://dx.doi.org/10.1177/070674379704200110.

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Objective: To assess the relationship between lifetime patterns of self-destructive behaviour and various parameters of childhood abuse and neglect in patients with borderline personality disorder (BPD) compared with other personality disorder (OPD) controls. Method: The subjects were 42 inpatients with the diagnosis of BPD and 17 OPD controls. Lifetime patterns of self-destructive behaviour were assessed using the Lifetime Borderline Symptom Index. Childhood experiences were assessed using a semistructured interview by raters who were blind to diagnosis. Results: Chronic self-destructive behaviour discriminated patients with BPD from OPD controls. In the borderline group, parental sexual abuse was significantly related to suicidal behaviour and both parental sexual abuse and emotional neglect were significantly related to self-mutilation. Conclusion: Both parental sexual abuse and emotional neglect appear to play a role in the etiology of self-destructive behaviour in BPD. The results highlight the importance of considering the effects of sexual abuse within its environmental context and suggest that the etiology of borderline symptoms is likely multifactorial.
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Dissertations / Theses on the topic "Destructive behaviour"

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Lee, I.-Ling. "Self-destructive behaviour among Taiwanese young people." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/2150/.

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This research aims to find out the factors as well as the mechanism of young people’s self-destructive behaviour in Taiwan. The research employed a mixed methodology- both quantitative and qualitative research methods. In the quantitative study, a self-reported questionnaire survey was carried out to investigate the individual and social factors that affected suicidality and self-harm among young people (N= 1043) aged 14-18. In the qualitative study, 20 semi-structured in-depth interviews were conducted with professionals to find out the mechanism of self-destructive behaviour. The results show that females are more vulnerable to self-destructive behaviours than males, but male suicide attempt is increasing. Self-destructive behaviour is shaped by a range of social, cultural and individual factors. General mental health and beliefs about death are the two individual factors that are highly related to young people’s self-destructive behaviour. Better general health and positive belief about death indicate lower risk of self-destructive behaviour. Social factors such as family interaction, peer relationship, traditional value, economic optimism and social-political security are five important factors to affect young people’s self-destructive behaviour. Close and supportive family interactions help reduce the risk of self-destructive behaviour. However, closer peer relationship may increase the likelihood of self-destructive behaviour because of copycat behaviour, imitation or altruistic behaviour. Holding more traditional values, young people may result in bearing many pressures during the current economic recession period.
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Celse, Jérémy. "Inequalities and destructive decisions : four essays on envy." Thesis, Montpellier 1, 2011. http://www.theses.fr/2011MON10067/document.

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A travers cette thèse, nous étudions l'envie et explorons l'impact de cette dernière sur le bien-être et le comportement individuel. Cette thèse se compose de quatre chapitres. Dans un premier chapitre, nous définissons l'envie en nous référant à des travaux réalisés en philosophie et en psychologie. Nous concluons que l'envie est une émotion déclenchée par la prise de conscience d'un attribut désiré, possédé par autrui et qui se caractérise par une douloureuse tristesse incluant des sentiments d'hostilité. Ensuite nous élaborons un protocole expérimental dont l'objectif est d'étudier l'impact de l'envie sur le bien-être et sur le comportement individuel. Nous capturons l'envie à travers des méthodes d'évaluation subjective et nous examinons si l'envie incite les sujets à réduire la dotation de leur partenaire malgré le coût personnel induit par la réduction. Nous observons que l'envie est fortement présente mais n'explique pas pourquoi les sujets réduisent la dotation des autres. Les inégalités de dotations mesurées en termes relatifs modulent les décisions des sujets à réduire la dotation d'autrui. Dans le chapitre trois, nous nous intéressons à l'impact de l'effort sur l'envie. Pour cela nous élaborons deux traitements. Dans un traitement, les sujets reçoivent des dotations de manière aléatoire alors que dans l'autre traitement les dotations sont attribuées en fonction de la performance de chaque sujet lors d'une tache effectuée avant l'expérience. Nous trouvons que l'effort n'affecte pas la satisfaction des sujets mais partiellement leur comportement : les sujets ne sont pas plus nombreux a réduire les gains des autres mais ils en réduisent une plus grande partie. Enfin, nous nous intéressons à un type de sujets particulier dans lequel l'envie est susceptible d'être ressentie fortement : les sportifs. Nous concluons que la pratique d'activités sportives pousse les agents à ressentir de l'envie et les incite à entreprendre des actions de réduction
Throughout this dissertation we aim at identifying envy and investigating its impacts on both individual well-being and behaviour. This dissertation consists of four chapters. The first chapter is devoted to the definition of envy by referring to both researches on philosophy and psychology. We convey that envy can be defined as an emotion triggered by the awareness of a desired attribute enjoyed by another person characterised by a painful sadness including feelings of hostility. In the second chapter, we implement an experiment so as to investigate the impact of envy on individual well-being and behaviour. We capture envy through referring to self-report methods and explore whether envy pushes subjects to reduce their opponent's endowment at a personal cost. We observe that envy is highly present but does not explain why subjects reduce others' income. Inequalities between subjects' endowments measured in relative terms modulate subjects' decisions to reduce others' income. In chapter three, we study how effort affects envy and whether the impact of envy on both individual well-being and behaviour is amplified or weakened by effort. To fulfil our purpose, we implement two different conditions. In one condition endowments are randomly attributed to subjects and in the other condition endowments are allocated according to each subject's performance in a task. We observe that effort does not affect subjects' satisfaction and partially their behaviour : subjects do not reduce more often their opponent's endowment but they cut a higher portion of their opponent's endowment when endowments are attributed according to individual effort. In the final chapter, we focus on a specific category of subjects in which envy is ought to be experienced intensively : subjects practicing sport activities. We observe that sport practice pushes subjects to experience envy and exerts them to engage in reduction decisions
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Stanistreet, Deborah Lynn. "Deaths from suicide and self-destructive behaviour among young men." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250584.

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Meissner, Birte Linda. "Attitudes, beliefs and myths about suicidal behaviour : a qualitative investigation of South African male students." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80464.

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Thesis (MSc) -- Stellenbosch University, 2013.
ENGLISH ABSTRACT: Suicidal behaviour is a serious public health problem. Globally and in South Africa a gendered pattern of suicide rates has been observed, with males being more likely to kill themselves than females. To date little quantitative and qualitative research is available on young male suicidal behaviour in South Africa. This study investigated the attitudes, beliefs and myths young male students hold about suicidal behaviour. Thirteen male university students (ages 20 to 25 years; with and without a history of suicidal behaviour), who volunteered to take part in the present study in response to an email invitation, were interviewed. The attitudes, beliefs and myths identified from the qualitative data are grouped into four themes: 'Moral acceptability of suicidal behaviour', 'Perceived causes and risk factors of suicidal behaviour', 'Perceived motives of suicidal behaviour', and 'Perceived prevention and protective factors of suicidal behaviour'. Besides these four themes, two underlying narratives are identified and discussed: (1) 'Apart or a part: Belonging and suicidal behaviour' is centred on the idea that perceiving oneself to be an integral part of a social system is protective against suicidal behaviour, while a thwarted sense of belonging increases vulnerability to suicidal behaviour. (2) 'Dying to be a man: (Re) negotiating masculinity and suicidal behaviour' is concerned with participants' views that men's relational position to hegemonic (socially most dominant) forms of masculinity is a factor in male suicidal behaviour. Participants regard hegemonic forms of masculinity to be both a part of the problem of suicidal behaviour and a potential solution to suicidal behaviour. These findings are interpreted through a social constructionist lens of gender as performance. Finally, implications of findings for future research, prevention and treatment are discussed.
AFRIKAANSE OPSOMMING: Selfmoordgedrag is 'n ernstige openbare gesondheidsprobleem. Wêreldwyd en in Suid-Afrika is mans meer geneig as vrouens om selfmoord te pleeg. Tot op hede is daar min kwantitatiewe en kwalitatiewe navorsing beskikbaar van jong manlike selfmoordgedrag in Suid-Afrika. Hierdie studie ondersoek die houdings, oortuiging en mites oor selfmoordgedrag van jong manlike studente. Dertien manlike universiteitstudente (ouderdomme 20 tot 25 jaar, met en sonder 'n geskiedenis van selfmoordgedrag) het vrywillig aan die huidige studie deel geneem in reaksie op 'n e-pos uitnodiging. Die houdings, oortuiging en mites wat vanaf die kwalitatiewe data geïdentifiseer is, is in vier temas gegroepeer: 'Morele aanvaarbaarheid van selfmoordgedrag', 'Siening van die oorsake en risiko faktore van selfmoordgedrag', 'Waargenome motiewe van selfmoordgedrag', en 'Waargenome voorkoming en beskermende faktore van selfmoordgedrag'. Naas hierdie vier temas, is twee onderliggende temas geïdentifiseer en bespreeek: (1) 'Samehorigheid en selfmoordgedrag' is gemoeid met die idee dat om 'n integrale deel van 'n sosiale sisteem te wees is beskermend teen selfmoordgedrag, terwyl 'n persepsie van isolasie tot selfmoordgedrag kan lei. (2) 'Onderhandeling van manlikheid en selfmoordgedrag' is gemoeid met die deelnemers se sienings dat mans se verhouding tot hegemoniese vorme (sosiaal mees dominante vorme) van manlikheid 'n faktor in manlike selfmoordgedrag is. Deelneemers beskou hegemoniese vorme van manlikheid as beide 'n deel van die probleem en 'n moontlike oplossing vir selfmoordgedrag. Hierdie bevindinge is geïnterpreteer deur middel van 'n sosiale konstruksionistiese lens van geslag as prestasie. Die implikasies van die bevindings vir toekomstige navorsing, voorkoming en behandeling word ten slotte bespreek.
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Narayanan, Kanimozhi. "Workplace destructive and constructive deviance behaviour in India and the USA : scale development, validation, theoretical model development and testing." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31428.

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Workplace deviance behaviour has resulted in 20% of business failure and annual loss of $6-$200 billion in US organizations and it was found that 33% to 75% of employees engage in deviant activities like withdrawal, theft, production deviance, abuse of co-workers etc., (Coffin, 2003; Diefendorff & Mehta, 2007). In addition, several researchers have concentrated on constructive deviance that would benefit the organizations. Thus, deviance has been a topic of interest for many researchers. However, previous research on deviance behaviour has concentrated predominantly in the USA despite proof that Indian organizations are indeed affected by workplace deviance (Pradhan & Pradhan, 2014) and on destructive or constructive deviance. In addition, from the deviance perspective, surprisingly no study so far has examined the presence and effects of individualism and collectivism within the same culture at the individual level. To contribute towards the extant deviance literature and to fill in the aforementioned gaps, this PhD thesis develops and tests a model using social cognitive theory as a lens to determine the relationship between environment, personality and behavioural outcomes of an individual. It incorporates workplace destructive and constructive deviance in the same study with individualistic and collectivistic orientation of individuals as moderators in India and the USA. What is the relationship of organizational and individual determinants with workplace destructive and constructive deviance when individual cultural orientation acts as a moderator? For this purpose, this research first determines the various factors that will be considered in the model by reviewing previous research done on workplace deviance. It was found that organizational climate, though it contributes to deviance behaviour in the workplace, has not yet been extensively researched so, climate was one of the factors examined in the research. In addition and despite its importance, an individual witness perspective towards deviance is still in its infancy. What are the behavioural responses of an individual while being a witness to supervisor, organizational, co-worker involvement in workplace destructive deviance? Therefore, the present study extended, developed and validated a construct to define and measure the witness behaviour towards workplace deviance behaviour using the theory of planned behaviour as its theoretical lens. This construct formed the second factor to be included in the model. This research makes use of the multi-strategy research paradigm that consists of two main studies: Study 2, 3 and 4 involves the development and validation of the witness behaviour towards workplace deviance scale; Study 5 involves the development and testing of a theoretical framework. Study 2 to 4 made use of a mixed methods strategy and inductive approach where the results from analysing the qualitative one-to-one interviews conducted in India and the USA formed the basis of scale construction. The scale, after undergoing rigorous analysis by using the quantitative data collected from India and the USA, resulted in a two-dimensional self-serving and intervening behaviour 9-item measure that proved to be a universal construct. It was then validated for construct, discriminant and predictive validity to classify it within the nomological network. It was found to sit closer to the phenomenon of voluntary behaviours, thus contributing to deviance and scale development literature. Study 5 involved the development of a conceptual framework that was tested with the quantitative data collected from India and the USA. The results provided support that when an individual has high organizational climate experience as well as more self-serving and less intervening behaviour, he/she would be involved in more constructive and destructive deviance behaviour providing support that organizations should focus on these factors and a clear distinction should be made between negative and positive deviance accepted within the organization. The results also provided support that individualistic and collectivistic orientation of an individual did moderate the effect of organizational climate, self-serving and intervening behaviour with destructive and constructive deviance. Therefore, an individual's orientation to individualism and collectivism would influence the relationship of organizational climate and witness behaviour towards workplace deviance so that organizations may benefit from implementing the study findings and suggestions. This would then prevent individuals from becoming involved in destructive deviance and enhance their involvement in constructive deviance.
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Grudzinskaitė, Jonė. "Destruktyvaus mokinių elgesio valdymas kaip ugdymo kokybės prielaida." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080924_175940-47814.

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Vadovaujantis prof. B. Bitino (2004) mintimis, galima labai aiškiai atskirti moksleivių destruktyvaus elgesio vadybinį (valdymo) lygmenį ir jo praktinio realizavimo (pedagoginį) lygmenį. Visgi vadybinis - administracinis lygmuo negali būti atskirtas nuo tiesioginio pedagoginio proceso jau vien todėl, kad vadybinės priemonės turi remtis konkrečiais auklėjimo uždaviniais, įvertinant tiek teorines šio proceso prielaidas, tiek ir konkrečių taikytinų priemonių efektyvumą. Kitaip tariant, mokinių destruktyvaus elgesio vadyba turi remtis konkrečiais edukologijos, psichologijos ir kitų mokslo sričių, tiriančių asmenybę ir jos raidą, pasiekimais. Tik tuomet ji bus rezultatyvi ir efektyvi. Kita vertus, labai svarbu, kad taikomi vadybiniai modeliai būtų tinkami keliamiems pedagoginiams uždaviniams. Atliktas tyrimas parodė, kad ir mokiniai, ir mokytojai mato nemažai galimybių gerinti auklėjamąjį darbą.. Tačiau mokytojai įvairias vadybines priemones dažniausiai vertina kaip daug efektyvesnes nei mano mokiniai. Ir mokiniai, ir mokytojai vieningai akcentuoja didesnio dėmesio svarbą mokinių tarpusavio santykiams. Tyrimas parodė, kad 6-8 klasių mokiniai nėra pakankamai įsisąmoninę netinkamo (destruktyvaus) elgesio žalą pačiam mokiniui, mokymosi rezultatams ir tarpusavio santykiams su bendraamžiais ir mokytojais. Destruktyvi mokinio elgsena neretai priklauso nuo jo nesugebėjimo realizuoti savąjį „Aš“ pozityviais būdais. Tam turi įtakos ir mokytojo bei kitų specialistų dalykinė kompetencija... [toliau žr. visą tekstą]
According to the prof. B. Bitinas it is possible clearly distinguish between the managerial level of schoolchildren destructive behaviour and it’s practical realization (pedagogical) level. However managerial–administrative level can not be separated from direct pedagogical process because the managerial instruments shall go entirely with the concrete educational tasks, assessing the theoretical preconditions for this process and effectiveness of possible to apply concrete tools. In other words, the management of schoolchildren destructive behaviour has appeal to the concrete achievements of science analysing personality and it’s evolution as educology, psychology and etc. Only then it could be effective and useful. But also it is very important that applied managerial models would be appropriate for raised pedagogical tasks. The accomplished research showed that schoolchildren of 6-8 class do not realize clearly the harm of bad (destructive) behaviour for themselves, learning results and relations between contemporaries and teachers. The appearance of schoolchild destructive behaviour usually depends on incapacity to realize his ego in positive ways. The teacher’s and other specialist’s competence, communication with schoolchildren skills also have influence. Both teachers and schoolchildren often assess similarly the appearance of schoolchildren destructive behaviour, it reasons and effective education methods. But also there are some essential differences. Knowing of... [to full text]
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Martens, Jeremy C. ""So destructive of domestic security and comfort", settler domesticity, race and the regulation of African behaviour in the colony of Natal, 1843-1893." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63437.pdf.

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Johansson, Malin. ""Wrist-cutters" : En explorativ studie över socionomstudenters bild av en person med självskadebeteende och den följande problematiken." Thesis, Linnéuniversitetet, Institutionen för socialt arbete, SA, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-21769.

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The purpose of this study is to analyse and describe social work students’ view on a person with self-injurious behaviour and the following issues. The aim and focus is on the general depiction. The theoretical perspectives have been intersectionality and its focus on social constructivism, and gender perspectives. The method was semi-structured interviews with eight social work students at Linnaeus University Kalmar. The collected data was the social work students’ opinions and it was contrasted with the previous research and was analysed from the above perspectives. The main conclusion is that social work students’ view on a person with self-injurious behaviour generally not consistent with the previous research. Previous research says that a person with self-injurious behaviour generally is a young, blonde, normal female. The majority of the social work students say that a person with self-injurious behaviour is a depressed, young female with dark hair and dark clothes. The social work students focus more on why a person goes to such extremes and hurts themselves.
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Clark, Brian. "The behaviour of rollover protective structures subjected to static and dynamic loading conditions." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16292/.

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The Rollover of heavy vehicles operating in the construction, mining and agricultural sectors is a common occurrence that may result in death or severe injury for the vehicle occupants. Safety frames called ROPS (Rollover Protective Structures) that enclose the vehicle cabin, have been used by heavy vehicle manufacturers to provide protection to vehicle occupants during rollover accidents. The design of a ROPS requires that a dual criteria be fulfilled that ensures that the ROPS has sufficient stiffness to offer protection, whilst possessing an appropriate level of flexibility to absorb some or most of the impact energy during a roll. Over the last four decades significant research has been performed on these types of safety devices which has resulted in the generation of performance standards that may be used to assess the adequacy of a ROPS design for a particular vehicle type. At present these performance standards require that destructive full scale testing methods be used to assess the adequacy of a ROPS. This method of ROPS certification can be extremely expensive given the size and weight of many vehicles that operate in these sectors. The use of analytical methods to assess the performance of a ROPS is currently prohibited by these standards. Reasons for this are attributed to a lack of available fundamental research information on the nonlinear inelastic response of safety frame structures such as this. The main aim of this project was to therefore generate fundamental research information on the nonlinear response behaviour of ROPS subjected to both static and dynamic loading conditions that could be used to contribute towards the development of an efficient analytical design procedure that may lessen the need for destructive full scale testing. In addition to this, the project also aspired to develop methods for promoting increased levels of operator safety during vehicle rollover through enhancing the level of energy absorbed by the ROPS. The methods used to fulfil these aims involved the implementation of an extensive analytical modelling program using Finite Element Analysis (FEA) in association with a detailed experimental testing program. From these studies comprehensive research information was developed on both the dynamic impact response and energy absorption capabilities of these types of structures. The established finite element models were then used to extend the investigation further and to carry out parametric studies. Important parameters such as ROPS post stiffness, rollslope inclination and impact duration were identified and their effects quantified. The final stage of the project examined the enhancement of the energy absorption capabilities of a ROPS through the incorporation of a supplementary energy absorbing device within the frame work of the ROPS. The device that was chosen for numerical evaluation was a thin walled tapered tube known as frusta that was designed to crush under a sidewards rollover and hence lessen the energy absorption demand placed upon the ROPS. The inclusion of this device was found to be beneficial in absorbing energy and enhancing the level of safety afforded to the vehicle occupants.
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Tholf, Sofia. "Självskadande beteende : Ett sociologiskt perspektiv." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-245.

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Den här uppsatsen är en litteraturstudie som behandlar problemet självdestruktivitet ur ett sociologiskt perspektiv. Jag har valt detta för att det är ett aktuellt problem och det är intressant att se det ur en sociologisk synvinkel istället för en psykologisk som kanske är vanligare att inta. Vilka sociologiska faktorer kan spela in gällande detta problem? Den litteratur som har legat till bakgrund för studien behandlar vilka som skadar sig, varför de gör det och olika definitioner samt vilka avgränsningar som bör göras för att ringa in fenomenets innebörd. Att skära, bränna och slå sig själv visar på ett självdestruktivt beteende och en orsak kan vara depression eller ångest.

Problemställningen som jag sökte ett svar på löd: Vilka ungdomar är det som skadar sig och varför? I den teoretiska genomgången så ligger fokus på kategorierna modernitet, kropp och ungdom. Utifrån detta tas olika sociologiska begrepp upp och analyseras i diskussionsfasen. I undersökningen så har jag bl.a. kommit fram till att dagens konsumtionssamhälle samt individualiseringen är en sannolikt bidragande faktor till att vissa unga människor utvecklar ett självdestruktivt handlande.


This study is an attempt to adress the problem of self-destructive behaviour from a sociological point of view. I feel that this is an important isssue in contemporary society, and that a sociological perspecitve may have something to offer that the more common psychological perspective may miss out on. The literature upon which the study is based deals with questions such as: What definition of the problem is most suitable? What are the characteristics of self-destructive behaviour and why do people hurt themself deliberately?

The specific question I approached was: Who are the young people that hurt themselves and why? The theoretical framework focuses on modernity, body and youth, and I make use of sociological concepts in the discussion. Some of my conclusions were that the consumeristic society of today and the individualization could be relevant factors in developing a self-destructive pattern.

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Books on the topic "Destructive behaviour"

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Going mad to stay sane: The psychology of self-destructive behaviour. London: Duckworth, 1996.

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Freimuth, Marilyn. Addicted?: Recognizing destructive behavior before it's too late. Lanham: Rowman & Littlefield, 2008.

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Freimuth, Marilyn. Addicted?: Recognizing destructive behavior before it's too late. Lanham: Rowman & Littlefield, 2008.

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Freimuth, Marilyn. Addicted?: Recognizing destructive behavior before it's too late. Lanham: Rowman & Littlefield, 2008.

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Freimuth, Marilyn. Addicted?: Recognizing destructive behavior before it's too late. Lanham: Rowman & Littlefield, 2008.

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Stevens, Jenny. A study of the experience and counselling treatment of self poisoning patients admitted to a general hospital, and the attitude of medical staff towards them. Birmingham: School of Continuing Studies, The University of Birmingham, 1998.

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Voice therapy: A psychotherapeutic approach to self-destructive behavior. New York, N.Y: Human Sciences Press, 1988.

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Hersen, Michel, Robert T. Ammerman, and Lori A. Sisson, eds. Handbook of Aggressive and Destructive Behavior in Psychiatric Patients. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2403-8.

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Klug, Coletta A. Suicide: The constructive/destructive self. Lewiston: E. Mellen Press, 1996.

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Barrett, Thomas C. Teens in crisis: Preventing suicide and other self-destructive behavior. Arlington, Va: American Association of School Administrators, 1989.

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Book chapters on the topic "Destructive behaviour"

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Dawson, R. L. "Destructive Children." In Teacher Information Pack 1: Behaviour, 137–44. London: Macmillan Education UK, 1985. http://dx.doi.org/10.1007/978-1-349-08997-0_14.

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Hosseini, Charissa, Jessica Walsh, and Lisa M. Brown. "Indirect Self-destructive Behaviour Across the Lifespan." In Handbook of Suicidal Behaviour, 239–54. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4816-6_13.

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Okasha, Ahmed. "The Self-Destructive Behaviour of Everyday Life." In Clinical Psychopathology Nomenclature and Classification, 883–87. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4899-5049-9_146.

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Hochkirchen, Bernward H., and Wolfgand G. Jelek. "Psychodynamics of Self-Destructive Behaviour in Native Americans (West Coast)." In Psychiatry The State of the Art, 519–25. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4757-1853-9_83.

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Morgan, Michael M., MacDonald J. Christie, Luis De Lecea, Jason C. G. Halford, Josee E. Leysen, Warren H. Meck, Catalin V. Buhusi, et al. "Self-Destructive Behavior." In Encyclopedia of Psychopharmacology, 1202. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-68706-1_3554.

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Ikeda, Shinsuke. "Coping with Self-Destructive Behavior." In Advances in Japanese Business and Economics, 153–80. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55793-7_6.

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Greenberg, Tamara McClintock. "Self-Destructive Behaviors and Illness." In Psychodynamic Perspectives on Aging and Illness, 137–54. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24289-7_7.

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Stern, Paul C. "Understanding and Changing Environmentally Destructive Behavior." In Ökologisches Handeln als sozialer Prozess, 89–96. Basel: Birkhäuser Basel, 1995. http://dx.doi.org/10.1007/978-3-0348-5045-2_7.

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Ikeda, Shinsuke. "Hyperbolic Discounting and Self-Destructive Behaviors." In Advances in Japanese Business and Economics, 43–65. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55793-7_3.

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Dahlström, Carl, and Lena Wängnerud. "How Institutions Constrain Elites from Destructive Behavior." In Elites, Institutions and the Quality of Government, 3–12. London: Palgrave Macmillan UK, 2015. http://dx.doi.org/10.1057/9781137556288_1.

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Conference papers on the topic "Destructive behaviour"

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Gerasimenko, Julia A. "Prevention Of Risky Destructive Behaviour Of Teenagers." In Psychology of subculture: Phenomenology and contemporary tendencies of development. Cognitive-Crcs, 2019. http://dx.doi.org/10.15405/epsbs.2019.07.24.

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Evseenkova, Elena Vyatcheslavovna. "Prevention Of Self-Destructive Behaviour Among Adolescents In School." In International Scientific Congress «KNOWLEDGE, MAN AND CIVILIZATION». European Publisher, 2021. http://dx.doi.org/10.15405/epsbs.2021.05.66.

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Anyakwo, A., C. Pislaru, A. Ball, and F. Gu. "Modeling the dynamic behaviour of the wheel rail interface using a novel 3D wheel-rail contact model." In 5th IET Conference on Railway Condition Monitoring and Non-Destructive Testing (RCM 2011). IET, 2011. http://dx.doi.org/10.1049/cp.2011.0616.

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Fedorenko, Marina, Marina Belousova, and Tatiana Chetyrchinskaya. "Emotional Intelligence, Anxiety and Aggression as Predictors of Destructive Behaviour and Offences of Teenagers." In IFTE 2019 - V International Forum on Teacher Education. Pensoft Publishers, 2019. http://dx.doi.org/10.3897/ap.1.e1266.

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Sheaffer, Zachary. "HOW DO SELF-EFFICACY, NARCISSISM AND AUTONOMY MEDIATE THE LINK BETWEEN DESTRUCTIVE LEADERSHIP AND COUNTERPRODUCTIVE WORK BEHAVIOUR." In 43rd International Academic Conference, Lisbon. International Institute of Social and Economic Sciences, 2018. http://dx.doi.org/10.20472/iac.2018.043.041.

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Schacht, R., B. Wunderle, D. May, B. Michel, and H. Reichl. "Modelling guidelines and non-destructive analysis for thermal and mechanical behaviour of via-structures in organic boards." In 2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (I-THERM). IEEE, 2008. http://dx.doi.org/10.1109/itherm.2008.4544303.

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Azizian, Reza, and Njuki Mureithi. "A Hybrid Friction Model for Dynamic Modeling of Stick-Slip Behaviour." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97249.

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Fretting wear is a common problem in different industries especially when it comes to interactions between metallic components. In heat exchangers, the problem plays a destructive role due to long term interaction between tubes and supports which may consequently lead to tube failure. In the present work, the tube-support fretting wear problem was investigated by refining models for friction effects in the stick-slip regions. The Slip distance is the most important parameter for wear estimation. Using the tangential stress distribution in the contact area, a new hybrid spring-damper friction model was developed. The model is able to estimate elastic, plastic and partial slipping distances during relative motion. The ability of the model to reproduce experimental tests is investigated in the present work.
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Abdollahi-Mamoudan, Farima, Sebastien Savard, Clemente Ibarra-Castanedo, Tobin Filleter, and Xavier Maldague. "Coplanar Capacitive Sensing as a New Electromagnetic Technique for Non-Destructive Evaluation." In 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/qnde2021-74739.

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Abstract Coplanar capacitive technique is a relatively novel electro-magnetic Non-Destructive Testing (NDT) method that could be applied to the evaluation of materials by moving a set of electrodes on the surface of the specimen. In addition to the design-related parameters such as electrode shape, size, and the separation distance between the main electrodes, the material of the specimen affects the coplanar capacitive probe performance. In this paper, a 3D Finite Element Modeling (FEM) was employed to assess and identify the electric field behaviour as a function of material under test for non-conducting and conducting specimens with/without defect. Physical experiments were carried out by a pair of rectangular coplanar electrodes on an aluminium specimen with surface defects covered by a 5 mm thick plexiglass insulation layer to verify the simulation results and evaluate the performance of the probe. A good qualitative agreement was observed between the numerical simulations and experimental results.
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Bouin, Pauline, Antoine Fissolo, and Ce´dric Gourdin. "Study of the Crack Propagation Behaviour of 304L Austenitic Stainless Steel Under Thermal Fatigue." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57234.

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Thermal fatigue phenomena are long term deterioration mechanisms which become more and more important as the life-time of nuclear power plant increases. Some incidents as the incident of Civaux I and some works in thermal fatigue have disproved current methodologies and usual criteria to predict propagation of thermal fatigue cracks in nuclear power plants. This paper presents the results of the thermal fatigue tests, Fat3D, which are conducted on 304L austenitic stainless steel pipes. This experiment has been designed to study the problem of closure effect and fatigue crack growth under thermal fatigue conditions on quasi-structure specimens. The importance of the initiation and the propagation phases on a notched specimen and the evolution of the stress intensity factor according to the propagation are investigated as well. The use of different non destructive techniques to detect and follow crack propagation is also assessed. In parallel, a numerical interpretation is developed based on a material characterisation and using finite element analyses with the French Cast3M code. This combined experimental and numerical study enables to assess improvements of classical methods to accurately predict the crack growth propagation under thermal loads and to understand the influence of the main parameters concerning crack propagation in such components.
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Runcan, Remus, Patricia Luciana Runcan, Cosmin Goian, Bogdan Nadolu, and Mihaela Gavrilă Ardelean. "SELF-HARM IN ADOLESCENCE." In NORDSCI International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/nordsci2020/b1/v3/27.

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This study provides the synonyms for the terms deliberate self-harm and self-destructive behaviour, together with a psychological portrait of self-harming adolescents, the consequence of self-harm, the purpose of self-harm, and the forms of self-harm. It also presents the results of a survey regarding the prevalence of people with non-suicidal self-harming behaviour, the gender of people with non-suicidal self-harming behaviour, the age of the first non-suicidal self-harming behaviour in these people, the frequency of non-suicidal self-harming behaviour in these people, the association of the non-suicidal self-harming behaviour with substance misuse in these people, the relationships of the people with non-suicidal self-harming behaviour with their fathers, mothers, and siblings, the relationships of the people with non-suicidal self-harming behaviour with their friends, the possible causes of self-harming behaviour in these people, and the relationship of people with non-suicidal self-harming behaviour with religion. Some of the results confirmed literature results, while others shed a new light on other aspects related to people with non-suicidal self-harming behaviour
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Reports on the topic "Destructive behaviour"

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Chen, Ting, Zhenyu Gao, Jibao He, Wenxi Jiang, and Wei Xiong. Daily Price Limits and Destructive Market Behavior. Cambridge, MA: National Bureau of Economic Research, November 2017. http://dx.doi.org/10.3386/w24014.

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Almås, Ingvild, Maximilian Auffhammer, Tessa Bold, Ian Bolliger, Aluma Dembo, Solomon Hsiang, Shuhei Kitamura, Edward Miguel, and Robert Pickmans. Destructive Behavior, Judgment, and Economic Decision-making under Thermal Stress. Cambridge, MA: National Bureau of Economic Research, April 2019. http://dx.doi.org/10.3386/w25785.

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Katan, Jaacov, and Michael E. Stanghellini. Clinical (Major) and Subclinical (Minor) Root-Infecting Pathogens in Plant Growth Substrates, and Integrated Strategies for their Control. United States Department of Agriculture, October 1993. http://dx.doi.org/10.32747/1993.7568089.bard.

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In intensive agriculture, harmful soilborne biotic agents, cause severe damage. These include both typical soilborne (clinical) major pathogens which destroy plants (e.g. Fusarium and Phytophthora pathogens), and subclinical ("minor") pathogens (e.g. Olpidium and Pythium). The latter cause growth retardation and yield decline. The objectives of this study were: (1) To study the behavior of clinical (major) and subclinical (minor) pathogens in plant growth substrate, with emphasis on zoosporic fungi, such as Pythium, Olipidium and Polymyxa. (2) To study the interaction between subclinical pathogens and plants, and those aspects of Pythium biology which are relevant to these systems. (3) To adopt a holistic-integrated approach for control that includes both eradicative and protective measures, based on a knowledge of the pathogens' biology. Zoospores were demonstrated as the primary, if not the sole propagule, responsible for pathogen spread in a recirculating hydroponic cultural system, as verified with P. aphanidermatum and Phytophthora capsici. P. aphanidermatum, in contrast to Phytophthora capsici, can also spread by hyphae from plant-to-plant. Synthetic surfactants, when added to the recirculating nutrient solutions provided 100% control of root rot of peppers by these fungi without any detrimental effects on plant growth or yield. A bacterium which produced a biosurfactant was proved as efficacious as synthetic surfactants in the control of zoosporic plant pathogens in the recirculating hydroponic cultural system. The biosurfactant was identified as a rhamnolipid. Olpidium and Polymyxa are widespread and were determined as subclinical pathogens since they cause growth retardation but no plant mortality. Pythium can induce both phenomena and is an occasional subclinical pathogen. Physiological and ultrastructural studies of the interaction between Olpidium and melon plants showed that this pathogen is not destructive but affects root hairs, respiration and plant nutrition. The infected roots constitute an amplified sink competing with the shoots and eventually leading to growth retardation. Space solarization, by solar heating of the greenhouse, is effective in the sanitation of the greenhouse from residual inoculum and should be used as a component in disease management, along with other strategies.
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Cohen, Shabtai, Melvin Tyree, Amos Naor, Alan N. Lakso, Terence L. Robinson, and Yehezkiel Cohen. Influence of hydraulic properties of rootstocks and the rootstock-scion graft on water use and productivity of apple trees. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7587219.bard.

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This one year exploratory project investigated hydraulic architecture of apple dwarfing rootstocks. The hypothesis was that hydraulic conductance is correlated with rootstock vigor. A previous study of trees on three rootstocks in Israel showed that dwarfed trees used less water than un-dwarfed trees. Analysis showed that if the tree maintains leaf water potentials above minimum values, then this implies that the dwarfed trees have lower leaf conductance, which may also be the cause of dwarfing. The current project studied small 2-year old unworked rootstock trees, and full sized trees bearing commercial yields. In both cases hydraulic conductance was determined with two methods - the non-destructive evaporative flux (EF)-leaf water potential (L WP) method, and a destructive method in which water was forced through the plant at known pressure using the "high pressure flow meter" (HPFM). Detailed work allowed measurement of conductance of the rootstock-scion union. This was achieved both with the HPFM and with the EF-LWP methods, the former in the US and the latter in Israel. Direct measurements of leaf conductance were made, and carbon isotope ratios ( d ¹³ C) were determined for leaves sampled at the end of the season. The latter can indicate sustained differences in leaf conductance behavior. HPFM and EF-LWP methods did not give the same results. In the small plants results were similar in magnitude, but not significantly correlated. In large trees, EF- L WP measurements were a fraction of those obtained with the HPFM. The latter indicates that some of the xylem is not normally functional but transports water when pressurized. Additional experimental work targeted this result. Xylem was stained before and after perfusion with water at high pressure. This showed that at least for one rootstock a significant amount of xylem was blocked before perfusion. The "air method" for determining xylem vessel properties was improved and employed. Length, radius and density of xylem vessels of different rootstocks were found to be similar, and significant differences found were not clearly related to rootstock vigor. Measurements in the commercial orchard in Israel showed that the graft union in a dwarfing rootstock was a large obstacle for water transport (i.e. had a high resistance). This apparently led to low leaf conductance to water vapor, as indicated by lower d ¹³ C, which implies low internal CO ₂ concentrations. In the US orchard, d ¹³ C in 2001 was correlated with rootstock vigor, and significant differences were found in leaf conductance. However, the d ¹³ C differences were not observed in 2002, were opposite to those found in the Israeli orchard, and measurements of the graft union with the HPFM did not find large resistances. We speculate that the graft union is not necessarily a large impediment to water transport unless the scion starts to separate from the rootstock. It was concluded that significant differences in hydraulic conductance exist between different dwarfing rootstocks. These differences may be caused by differences in xylem properties and in the degree of cavitation, as well as resistance in the graft union. However, no general relationship to rootstock vigor was found. Therefore, hydraulic conductance alone cannot explain dwarfing, but may be one of two or more factors that lead to dwarfing. Future work should integrate more factors with hydraulic relations, e.g. nutrient and solute transport and production of hormones.
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Hefetz, Abraham, and Justin O. Schmidt. Use of Bee-Borne Attractants for Pollination of Nonrewarding Flowers: Model System of Male-Sterile Tomato Flowers. United States Department of Agriculture, October 2003. http://dx.doi.org/10.32747/2003.7586462.bard.

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The use of bee natural product for enhancing pollination is especially valuable in problematic crops that are generally avoided by bees. In the present research we attempted to enhance bee visitation to Male Sterile (M-S) tomato flowers generally used in the production of hybrid seeds. These flowers that lack both pollen and nectar are unattractive to bees that learn rapidly to avoid them. The specific objects were to elucidate the chemical composition of the exocrine products of two bumble bee species the North American Bombus impatiens and the Israeli B. terrestris. Of these, to isolate and identify a bee attractant which when sprayed on M-S tomato flowers will enhance bee visitation, and to provide a procedure of the pheromone application regime. During the research we realized that our knowledge of B. impatiens is too little and we narrowed the objective to learning the basic social behavior of the bees and the pattern of foraging in a flight chamber and how it is affected by biogenic amines. Colonies of B. impatiens are characterized by a high number of workers and a relatively small number of queens. Size differences between queens and workers are pronounced and the queen seems to have full control over egg laying. Only about 9% of the workers in mature colonies had mature oocytes, and there were no signs of a "competition phase" as we know in B. terrestris. Queens and workers differ in their exocrine bouquet. Queen's Dufour's gland possesses a series of linear, saturated and unsaturated hydrocarbons whereas that of workers contains in addition a series of wax-type esters. Bees were trained to either visit or avoid artificially scented electronic flowers in a flight chamber. Since bee also learned to avoid scented non-rewarding flowers we attempted to interfere with this learning. We tested the effect of octopamine, a biogenic amine affecting bee behavior, on the choice behavior of free-flying bumblebees. Our results show that octopamine had no significant effect on the bees' equilibrium choice or on the overall rate of the behavioral change in response to the change in reward. Rather, octopamine significantly affected the time interval between the change in reward status and the initiation of behavioral change in the bee. In B. terrestris we studied the foraging pattern of the bees on tomato flowers in a semi commercial greenhouse in Yad Mordechai. Bee learned very quickly to avoid the non- rewarding M-S flowers, irrespective of their arrangement in the plot, i.e., their mixing with normal, pollen bearing flowers. However, bees seem to "forget" this information during the night since the foraging pattern repeats itself the next morning. Several exocrine products were tested as visitation enhancers. Among these, tarsal gland extracts are the most attractive. The compounds identified in the tarsal gland extract are mostly linear saturated hydrocarbons with small amounts of unsaturated ones. Application was performed every second day on leaves in selected inflorescences. Bee visitation increased significantly in the treated inflorescences as compared to the control, solvent treated. Treatment of the anthers cone was more effective than on the flower petals or the surrounding leaves. Methanol proved to be a non-flower-destructive solvent. We have shown that bumble bees (B. terrestris) can be manipulated by bee-borne attractants to visit non-rewarding flowers. We have further demonstrated that the bees learning ability can be manipulated by applying exogenously octopamine. Both methods can be additively applied in enhancing pollination of desired crops. Such manipulation will be especially useful in tomato cultivation for hybrid seed production.
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Brown Horowitz, Sigal, Eric L. Davis, and Axel Elling. Dissecting interactions between root-knot nematode effectors and lipid signaling involved in plant defense. United States Department of Agriculture, January 2014. http://dx.doi.org/10.32747/2014.7598167.bard.

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Root-knot nematodes, Meloidogynespp., are extremely destructive pathogens with a cosmopolitan distribution and a host range that affects most crops. Safety and environmental concerns related to the toxicity of nematicides along with a lack of natural resistance sources threaten most crops in Israel and the U.S. This emphasizes the need to identify genes and signal mechanisms that could provide novel nematode control tactics and resistance breeding targets. The sedentary root-knot nematode (RKN) Meloidogynespp. secrete effectors in a spatial and temporal manner to interfere with and mimic multiple physiological and morphological mechanisms, leading to modifications and reprogramming of the host cells' functions, resulted in construction and maintenance of nematodes' feeding sites. For successful parasitism, many effectors act as immunomodulators, aimed to manipulate and suppress immune defense signaling triggered upon nematode invasion. Plant development and defense rely mainly on hormone regulation. Herein, a metabolomic profiling of oxylipins and hormones composition of tomato roots were performed using LC-MS/MS, indicating a fluctuation in oxylipins profile in a compatible interaction. Moreover, further attention was given to uncover the implication of WRKYs transcription factors in regulating nematode development. In addition, in order to identify genes that might interact with the lipidomic defense pathway induced by oxylipins, a RNAseq was performed by exposing M. javanicasecond-stage juveniles to tomato protoplast, 9-HOT and 13-KOD oxylipins. This transcriptome generated a total of 4682 differentially expressed genes (DEGs). Being interested in effectors, we seek for DEGs carrying a predicted secretion signal peptide. Among the DEGs including signal peptide, several had homology with known effectors in other nematode species, other unknown potentially secreted proteins may have a role as root-knot nematodes' effectors which might interact with lipid signaling. The molecular interaction of LOX proteins with the Cyst nematode effectors illustrate the nematode strategy in manipulating plant lipid signals. The function of several other effectors in manipulating plant defense signals, as well as lipids signals, weakening cell walls, attenuating feeding site function and development are still being studied in depth for several novel effectors. As direct outcome of this project, the accumulating findings will be utilized to improve our understanding of the mechanisms governing critical life-cycle phases of the parasitic M. incognita RKN, thereby facilitating design of effective controls based on perturbation of nematode behavior—without producing harmful side effects. The knowledge from this study will promote genome editing strategies aimed at developing nematode resistance in tomato and other nematode-susceptible crop species in Israel and the United States.
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