By means of the averaging method of the first order, we introduce the maximum number of limit cycles which can be bifurcated from the periodic orbits of a Hamiltonian system. Besides, the perturbation has been used for a particular class of the polynomial differential systems.

Bioethics, Volume 36, Issue 4, Page 388-402, May 2022.

The aim of the article. The aim of the article is to identify the components of social and economic systems life cycle. To achieve this aim, the article describes the traits and characteristics of the system, determines the features of social and economic systems functioning and is applied a systematic approach in the study of their life cycle. The results of the analysis. It is determined that the development of social and economic systems has signs of cyclicity and (...) is explained methodologically by the axiomatics, rules and laws. Understanding of circular patterns has been formed long ago and now is recorded by scientists monitoring the properties of natural and artificial environment of human activity. During the study, it was found out that in scientific literature there is no unified description of the life cycle elements of social and economic systems at personal, micro, meso, macro and global levels. The paper investigates the cyclical patterns in multilevel social and economic systems for a human, employee, family, product, company, city, industry, elite, macroeconomic indicators, humanity, global processes, global economic system and the Universe. It is noted that at grass-roots administrative levels of the global environment of a human life activity system, a thesis about the cyclicity of development and the stages of the life cycle is considered by a wide circle of scientists and is doubtless. On hierarchically higher management levels of the global environment of human activity system, the scientists noticed the similar patterns of the cyclical nature. Problematic and discussion questions about cyclic development of social and economic systems are identified: the uncertainty of the driving force source of repeated changes; the vague distinction between systemic (internal) and off-system (external) influence on development; the lack of a unified description of development nature at different managerial levels; the use of different descriptive terms for the same constituent elements of repeated changes (period, stage, phase, wave, cycle); the uncertainty of the number of repeated changes constituent elements; the absence of an identification mechanism of the exact time of changes in the constituent elements of repeated changes; the surface description of out-of-system period of the subjects activity («before-system» period of creation and «after-system» period of liquidation); attaching more importance to primary and less importance to ultimate component elements of the repeated changes; the lack of reliable mechanism for predicting and forecasting the dynamics of constituent components of repeated changes. It is noted that all social and economic systems are developed within repeated changes and they have the same attributes of cyclicity: the fluctuation of indicators is marked that characterize the condition of the subject; the presence of system (from creation to liquidation) and out-of-system (creation – «design» and liquidation – «disposal») periods are noted; the subjects are created by the actions of other subjects (that is, subjects do not arise «out of nowhere», but are the result of actions of other subjects – «constructors»); after cessation of subjects functioning, their resources are used by other subjects (that is, the subjects do not disappear «nowhere», and they are transformed into the resources of other subjects – «recovery»); a unidirectional life cycle from «birth» to «death» is observed in the subjects; the subjects do not have to undergo the whole life cycle (each time might be the last); the subjects display similar changes of the indicators during their activity; ascending, peak and descending fluctuations of indicators are observed in the subjects; minor fluctuations occur in the constituent elements; the subjects have individual nature of indicator fluctuations and duration of activity. Conclusions and directions of further researches. The scientific novelty of the study is identification structure of life cycle of social and economic system with definitions of: common («before-system state», «growth», «stabilization», «reduction», «after-system state») and specific («creation», «slow growth», «rapid growth», «growth stabilization», «short stabilization», «rapid reduction», «slow reduction», «liquidation») constituent elements of repeated changes; marginal borders of indicators; dynamics of constituent elements of life cycle; key points of changing nature of the indicators dynamics. Identification of the life cycle of social and economic systems characterizes potentially possible limits of their activity in time and provides the possibility of further research of aspects of the cyclical development for methodological basis formation and the development of applied measures of systemic development in the areas of marketing and management innovations. (shrink)

By classic results in social choice theory, any reasonable preferential voting method sometimes gives individuals an incentive to report an insincere preference. The extent to which different voting methods are more or less resistant to such strategic manipulation has become a key consideration for comparing voting methods. Here we measure resistance to manipulation by whether neural networks of varying sizes can learn to profitably manipulate a given voting method in expectation, given different types of limited information about how other voters (...) will vote. We trained over 70,000 neural networks of 26 sizes to manipulate against 8 different voting methods, under 6 types of limited information, in committee-sized elections with 5-21 voters and 3-6 candidates. We find that some voting methods, such as Borda, are highly manipulable by networks with limited information, while others, such as Instant Runoff, are not, despite being quite profitably manipulated by an ideal manipulator with full information. For the two probability models for elections that we use, the overall least manipulable of the 8 methods we study are Condorcet methods, namely Minimax and Split Cycle. (shrink)

In evolutionary psychology predictions, women’s mate preferences shift between fertile and nonfertile times of the month to reflect ancestral fitness benefits. Our meta-analytic test involving 58 independent reports was largely nonsupportive. Specifically, fertile women did not especially desire sex in short-term relationships with men purported to be of high genetic quality. The few significant preference shifts appeared to be research artifacts. The effects declined over time in published work, were limited to studies that used broader, less precise definitions of the (...) fertile phase, and were found only in published research. (shrink)

Ribonucleotide reductase (RNR) catalyzes the rate limiting step in the production of deoxyribonucleotides needed for DNA synthesis. In addition to the well documented allosteric regulation, the synthesis of the enzyme is also tightly regulated at the level of transcription. mRNAs for both subunits are cell cycle regulated and inducible by DNA damage in all organisms examined, including E. coli, S. cerevisiae and H. sapiens. This DNA damage regulation is thought to provide a metabolic state that facilitates DNA replicational repair (...) processes. S. cerevisiae also encodes a second large subunit gene, RNR3, that is expressed only in the presence of DNA damage. Genetic analysis of the DNA damage response in S. cerevisiae has shown that RNR expression is under both positive and negative control. Among mutants constitutive for RNR expression are the general transcriptional repression genes, SSN6 and TUP1. Mutations in POL1 and POL3 also activate RNR expression, indicating that the DNA damage sensory network may respond directly to blocks in DNA synthesis. A protein kinase, Dun1, has been identified that controls inducibility of RNR1, RNR2 and RNR3 in response to DNA damage and replication blocks. This result suggests that the RNR genes in S. cerevisiae form a regulon that is coordinately regulated by protein phosphorylation in response to DNA damage. (shrink)

In this article, we first question the cogency of the strict delimitation of the object of study of economics in real business cycle theory and investigate its methodological and ontological consequences in the light of Roy Bhaskar's transcendental realism. We discuss the limits of real business cycle theory for detecting regularities, as well as the possibility of refuting conjectures. Finally, we show that our conclusions can be generalized to economic theories relying on the notion of general equilibrium.

This article aimed to investigate the effects of menstrual cycle phases on perceptual responses in athletes by means of systematic review and meta-analysis. The search was conducted in the PubMed, Web of Science, and Sport Discus databases considering articles with two or more menstrual phases for comparison. The PECO criteria were used for the keywords “menstrual cycle,” “athletes,” and “perceptual responses” with their respective entry terms. Of 1.165 records identified, 14 articles were available for the final evaluation, while (...) eight articles were eligible for a meta-analysis. The perceptual responses evaluated in the studies were: motivation, competitiveness, sleep quality, stress, muscle soreness, fatigue, perceived effort, mood, menstrual symptoms, perceived endurance, and readiness. The meta-analysis was conducted for perceived effort only. The results showed that the level of perceived exertion does not differ two phases of the menstrual cycle, whereas RPE was 19.81 ± 0.05 and 16.27 ± 0.53 at day 1–5 and day 19–24, respectively. Two studies found statistically significant changes in motivation and competitiveness during the cycle, with better outcomes in ovulatory phase compared to follicular and luteal. One study found an increase in mood disturbance in the pre-menstrual phase ; one decreased vigor in the menstrual phase ; one increased the menstrual symptoms in the follicular phase, and one study reported increased fatigue and decreased sleep quality on luteal phase. The remaining studies and variables were not affected by the menstrual cycle phase. Based on the results from the studies selected, some perceptual responses are affected in different menstrual cycle phases. A “favorable” subjective response in athletes was noticed when the ovarian hormones present an increase in concentration levels compared to phases with lower concentration. Different perceptual variables and methodological approaches limit the generalization of the conclusion. (shrink)

Trust is critical to the development and maintenance of collaborative and cohesive relationships in societies, broadly, and in organizations, specifically. At the same time, trust is highly dependent on the social context in which it occurs. Unfortunately, existing research involving trust remains somewhat limited to a particular set of developed economies, providing a window to explore a culture's stage of economic development as a key contextual determinant of trust within organizations. In this article, we review the state of the scholarship (...) on trust and identify those qualities of trust that are common in organizations at similar stages of economic development, referred to as its etic aspects. We then also distinguish those elements of trust that are, to the contrary, culturally specific or emic in nature. We structure our discussion around the “life cycle of trust” (i.e., the creation, maintenance, and postfracture repair of trust) and consider unique factors in its application to developing economies. In doing so, we ground our examination in expository examples through field experience in Haiti. We conclude with the proposal of a framework for future research oriented toward the resolution of remaining theoretical and empirical queries as they relate to trust in developing economies. (shrink)

Arising restrictions of global economic growth due to limited natural resources and capacity of the biosphere adversely affect on people level of life and future expectation. That leads to mass depression and social instability. To consider this problem, psycho-physiological model of onward hedonist in consumer society is developed and investigated. This model is based on the fact that human nature generates a growing desire, needs to progress. After reaching the limits of growth, member of consumer society feel persistent negative emotions (...) and dissatisfaction. It results to socio-economic stagnation, social and international instability. The first type of possible solutions to this problem is based on the global expansion of the limits of growth (e.g., increasing of macroeconomic demand as a result of new Kondratieff technological cycle). The second type of solutions refers to local limits extension of growth within one or more countries, by means of their economic, political or military expansion in the world. But such solutions lead to international instability. The third type of solutions corresponds to periodical decreasing of the macroeconomic consumption followed by its growth (e.g., global financial crisis, decay of states and their unions, national and military conflicts, wars and so on). Such solution also leads to social and international instability. Humanistic solution consists in creativity development of people (especially middle class of developed countries) to focus on spiritual development. So rising desires of these people in spiritual realm can be satisfied under limits of global economic growth. (shrink)

Practical reasoning as an important form of argumentation in politics has received limited research attention in critical discourse studies despite the proposal of an analytical model. Focusing on argument development surrounding events related to the extradition bill crisis of Hong Kong, this paper analyzes 48 editorials published in the South China Morning Post during the crisis period adopting Fairclough’s model. A number of recurrent themes have been identified in the corpus in association with the four argument components within the model (...) – Claims, Goals, Values and Circumstances – which may increase understanding of the social contexts of the extradition bill crisis. It is further argued that, although Fairclough’s model may not capture the arguments in individual editorials comprehensively, the model can be usefully applied to analyze a collection of interrelated editorials to reveal more insights about an ongoing political crisis. (shrink)

This paper discusses the stability and Hopf bifurcation analysis of the diffusive Kaldor–Kalecki model with a delay included in both gross product and capital stock functions. The reaction-diffusion domain is considered, and the Galerkin analytical method is used to derive the system of ordinary differential equations. The methodology used to determine the Hopf bifurcation points is discussed in detail. Furthermore, full diagrams of the Hopf bifurcation regions considered in the stability analysis are shown, and some numerical simulations of the (...) class='Hi'>limit cycle are used to confirm the theoretical outcomes. The delay investment parameter and diffusion coefficient can have great impacts on the Hopf bifurcations and stability of the business cycle model. The investment parameters for the gross product and capital stock as well as the adjustment coefficient of the production market are also studied. These parameters can cause instability in, and the stabilization of, the business cycle model. In addition, we point out that, as the delay investment parameter increases, the Hopf bifurcation points for the diffusion coefficient values decrease considerably. When the delay investment parameter has a very small value, the solution of the business cycle model tends to become steady. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Breaking the Readmission CycleBrian HattenI want to share the story of my difficult patient Ms. L. She has twenty-seven current medical issues. Thirty-five active prescriptions. Limited mobility requiring the use of a motorized scooter. Non-medical care gaps. And over twenty hospital admissions since 2020. I met Ms. L approximately five years ago as her hospital attending and have continued to care for her during her frequent hospitalizations. I could (...) recite this 77-year-old female's litany of medical problems. But sufficed to say, her history is complex, with her admitting diagnoses running the gambit from cellulitis to gastrointestinal bleeding to altered mental status. But, her diagnosis and frequent exacerbations of congestive heart failure (CHF) are particularly frustrating for us both and will be my focus today.CHF makes her susceptible to fluid overload leading to feelings of shortness of breath, which progresses to respiratory distress. Like other individuals with CHF, she uses diuretics to prevent herself from becoming fluid overloaded. And, like many individuals who take diuretics, she hates them. She (un)affectionately calls her water pills "the bomb" because the effect is sudden, profound, and explosive when they begin working. The combination of the diuretic effect and her limited mobility causes significant emotional stress for Ms. L, a woman who values presenting herself outwardly as in control, well-dressed, and put together. Her dislike of the medical effect of her diuretics has led to her either taking them less often or outright discontinuing them. So, while discontinuation avoids those frustrating effects, it leads to fluid accumulation, subsequent respiratory distress, and readmission to the hospital.Her medical records mention she has memory issues. It is unclear how much her mild cognitive impairment affects her frequent readmissions. We have had many conversations where I would never suspect something was amiss. But sometimes, she can be forgetful and does not recall our recent discussions. That being said, she knows the names and uses of her medications. She can report to me her home weights when she checks them and knows what her "dry" weight should be. Yet, she does not act when her scales begin reading heavier or when she develops leg swelling. Instead, she presents to the emergency department in extremis. When directly questioned about why she lets her situation deteriorate to such a state that she requires hospitalization, she demurs. She comments that she can often be stubborn, that the diuretic effect of "the bomb" is burdensome, but always reminds me she is honest in admitting she wasn't taking her water pills.During several admissions, I worried for her survival after she had self-discontinued her medications and showed up at the emergency department in respiratory failure. For any patient with recurrent admissions, I discuss their overall goals of care to ensure we are working together toward achievable medical ends. But this conversation was essential to have with Ms. L. The possibility existed that she would present to the hospital too late in her disease process, and we would not be able to correct her respiratory failure. I wanted to ensure that the hospital staff and I respected her wishes regarding her care. Despite raising my concerns, she would [End Page 22] decline to discuss her wishes. Even worse, attempting to have her complete advance care planning documents like advance directives or a Physician Orders for Life-Sustaining Treatment (POLST) form was a futile endeavor. Ms. L was always vague and non-committal. She simply did not want to engage in those types of conversations. When asked why she declined to discuss these issues, Ms. L would reply that she was doing okay, the discussion was unnecessary, and she had family members to make those decisions for her.Caring for her during her hospital stays was a source of professional frustration for me. Her recurrent admissions made me feel like I was failing her. During each hospital stay, we would go over her medications. We repeatedly discussed how she should check her weights daily and monitor for lower extremity edema. We created multiple action plans for when to call her physicians so we could head off another hospital visit. We completed all the... (shrink)

This article begins with the assumption that criminal disenfranchisement is at least sometimes theoretically defensible, as a component of punishment. From this assumption, I argue that it is only legitimate in a constrained set of cases. These constraints include: implementing disenfranchisement only for serious crimes; tying disenfranchisement to both the electoral cycle and to the length of imprisonment imposed for an offence; and assessing a background condition of sufficient justice present within the state that wishes to disenfranchise. Once these (...) constraints are considered, I argue that there are very few instances in which disenfranchisement is defensible. To prove this, I examine both current disenfranchisement practices and the commonly present factors that undermine the constraints outlined above. (shrink)

_A leading thinker asks why “faster” is synonymous with “better” in our hurried world and suggests how to take control of our runaway lives_ We live in an ever-accelerating world: faster computers, markets, food, fashion, product cycles, minds, bodies, kids, lives. When did everything start moving so fast? Why does speed seem so inevitable? Is faster always better? Drawing together developments in religion, philosophy, art, technology, fashion, and finance, Mark C. Taylor presents an original and rich account of a great (...) paradox of our times: how the very forces and technologies that were supposed to free us by saving time and labor now trap us in a race we can never win. The faster we go, the less time we have, and the more we try to catch up, the farther behind we fall. Connecting our speed-obsession with today’s global capitalism, he composes a grand narrative showing how commitments to economic growth and extreme competition, combined with accelerating technological innovation, have brought us close to disaster. Psychologically, environmentally, economically, and culturally, speed is taking a profound toll on our lives. By showing how the phenomenon of speed has emerged, Taylor offers us a chance to see our pace of life as the product of specific ideas, practices, and policies. It’s not inevitable or irreversible. He courageously and movingly invites us to imagine how we might patiently work towards a more deliberative life and sustainable world. (shrink)

In this paper, we analyzed the periodicity of discrete Logistic and Tent sequences with different computational precision in detail. Further, we found that the process of iterations of the Logistic and Tent mapping is composed of transient and periodic stages. Surprisingly, for the different initial iterative values, we first discovered that all periodic stages have the same periodic limit cycles. This phenomenon has seriously affected the security of chaotic cipher. To solve this problem, we designed a novel discrete chaotic (...) sequence generator based on m-sequence and discrete chaotic mapping. The experimental results indicated that the chaotic sequence generator can generate pseudorandom chaotic sequences with large periodicity and good performance under the condition of limited computational precision. (shrink)

Rnd3/RhoE has two distinct functions, regulating the actin cytoskeleton and cell proliferation. This might explain why its expression is often altered in cancer and by multiple stimuli during development and disease. Rnd3 together with its relatives Rnd1 and Rnd2 are atypical members of the Rho GTPase family in that they do not hydrolyse GTP. Rnd3 and Rnd1 both antagonise RhoA/ROCK‐mediated actomyosin contractility, thereby regulating cell migration, smooth muscle contractility and neurite extension. In addition, Rnd3 has been shown to have a (...) separate role in inhibiting cell cycle progression by reducing translation of cell cycle regulators, including cyclin D1 and Myc. We propose that Rnd3 could act as a tumour suppressor to limit proliferation, but when mutations bypass this activity of Rnd3, it can promote cancer invasion through its effects in the actin cytoskeleton. (shrink)

Much of the work on the ethics of climate engineering over the last few years has focused on the front-end of the potential timeline for climate intervention. Topics have included the initial taboo on bringing the discussion of climate engineering into the open, guidelines to put in place before commencing research, and governance arrangements before first deployment. While this work is clearly important, the current paper considers what insights can be gleaned from considering the tail-end, that is, by using the (...) requirement for future cessation as a criterion for any acceptable climate engineering strategy. After showing that time-limited interventions are a key part of the rhetoric of leading climate engineering advocates, the paper examines the implications of imposing a 'cessation requirement' on solar radiation management and carbon dioxide removal strategies. Consideration of a cessation requirement turns out to reveal a great deal about what ought to be happening now, before any decision to proceed with climate engineering deployment has been taken. (shrink)

The pervasiveness of domestic employment in the South African context gives rise to the question as to why women not only enter into, but remain in, such an undervalued work situation, and whether they are ultimately able to exit this sector. Contextualising the sectoral engagement of domestic workers as a transitional work-life cycle characterised by impoverishment, limited alternatives, acceptance of the work context, and future directedness, with individual transition through these phases determined by a unique set of circumstances, female (...) domestic workers’ lived experience of their work-life cycle was explored within the framework of an interpretivist research design. Non-probability respondent-driven self-sampling was employed to select 20 participants, most of whom were representative of families with a long history of sectoral involvement, particularly along the female line. Dense, non-numerical data was generated through in-depth interviewing. Inductive data explication was conducted with the aid of MAXQDA. The findings confirmed the existence of an institutionalised culture of engagement within the sector perpetuated from one generation to the next. Hardship and an urgent need for survival leave many with little option but to enter and remain within the sector. Despite negative societal perceptions of the sector, those within it take pride in their work and view their engagement as an enabling tool to better their future prospects and those of their families. Attempts to exit the sector are unsuccessful due, in part, to a limited formal education and skills repertoire. Domestic workers are thus entrapped within a never-ending cycle of sectoral engagement, with the possibility of exiting the sector remaining merely a dream for many. (shrink)

Social roles theorists claim that differences between the sexes are of limited consequence. Such misperceptions lead to misunderstanding the important role of sexual selection in explaining phenotypic differences both between species and within humans. Countering these claims, we explain how sexual dimorphism in humans affect expressions of artistic display and patterns of male and female aggression across the ovulatory cycle.

Local food is a popular subject among consumers, as well as food producers, distributors, policymakers and researchers in many countries. Previous research has identified that the definition of local food varies by context, and from country to country. The literature also suggested that environmental sustainability is one of the goals for many of the local food movements. While there is a substantial body of literature on local food internationally, limited research has been undertaken in New Zealand. This paper aims to (...) understand how consumers define local food, what attributes they associate with local food, and the extent to which life cycle-based environmental aspects are represented in these attributes. Primary research employed quantitative methodology. This study identified that a majority of the respondents considered that local food may be defined as food that was produced in New Zealand and that support for community was the most important attribute associated with local food. Reduced GHG emission, conserving the landscape, and organic production were the life cycle-based environmental attributes that were associated with local food. This study provides a basis for further research into understandings of local food in New Zealand and how to improve communication among different social actors with respect to demand and supply of local food. (shrink)

A new study published in Journal of Medical Ethics by van der Zande et al 1 further highlights why classifying pregnant women as a ‘vulnerable population’ in the context of research is deeply problematic. Because the designation of ‘vulnerable’ is otherwise applied to populations whose decision-making capacity about research participation is somehow compromised—such as children and adults of limited cognitive ability—many of us have been arguing for some time that using this designation for pregnant women is inappropriate and disrespectful.2–4 There (...) is nothing about the state of pregnancy that renders pregnant women incapable of offering valid research consents or refusals. Moreover, rather than protecting the health interests of pregnant women and their offspring, this designation has had the opposite effect. It has contributed to the widespread exclusion of pregnant women from research activities, which is itself pernicious to the health of pregnant women.5 We know that pregnant women encounter a range of health needs across their pregnancies. In the USA, for example, approximately 9 out of every 10 women use some kind of medication during pregnancy to manage health conditions.6 Yet because pregnant women have largely been …. (shrink)

La comprensión de la muerte varía según la época, la cultura, la religión y la edad. Con anterioridad al desarrollo que la ciencia médica ha experimentado desde finales del siglo XIX, en la mayoría de las culturas y religiones había una aceptación de la muerte y se consideraba como parte del ciclo vital de la persona donde se trascendía a una forma celestial y puramente sobrenatural. Los avances científicos de la medicina han venido a cambiar esta situación. La muerte se (...) empezó a ver como un enemigo y dio comienzo a una lucha encarnizada entre ambas. El concepto de "muerte natural" se sustituyó por el de "muerte intervenida," dando origen a numerosas cuestiones relacionadas con la toma de decisiones y actuaciones a realizar en pacientes ingresados y en situación terminal. En este trabajo se realiza una reflexión teórica que tiene como objetivo el análisis bioético acerca de las diferencias entre los aspectos religiosos y culturales relacionados con la práctica de la limitación del esfuerzo terapéutico. The understanding of death varies according to time, culture, religion, and age. Previous to the development that medical sciences has undergone since the end of the XIX Century, in most cultures and religions there have been an acceptation of death and considered as part of the person vital cycle in which one would transcend to a celestial and purely supernatural form. The scientific advances in medicine have emerged to change this situation. Death began to be seen as an enemy and gave rise to an enraged struggle between both of them. The concept of natural death was changed into intervened death, which originated numerous related questions with decision and action taking to be performed in hospitalized patients and those in terminal situation. In this work a theoretical reflection is performed whose objective is the bioethical analysis on the differences among religious and cultural aspects related to the practice of therapeutic effort limitation. (shrink)

On a sunny Sunday afternoon in 2012 a conflict arose between two men riding a popular mountain biking track in New Zealand. The bulk of this was filmed from a helmet-mounted action camera, facilitating a single case analysis of the transition from an everyday trouble to an unexpected violent ending. The two riders come across each other travelling downhill at speed on a narrow track. Unease quickly develops for the camera-clad rider wants to pass the rider in front, but except (...) for an intriguing and brief interlude, the first rider will not let the other pass. The second rider grows frustrated, progressing to tailgate the ‘slower’ rider, in the midst of which he invokes a rule of mountain biking conduct. The reflexive implications of the rule-invocation need to be seen to be believed. The video is used as data to get close to such seeing, and despite some limitations, we can see a clear trajectory where the rule significantly contributes to a moment of phenomenological salience. Thereafter, it becomes witnessably relevant to the conflict that develops. (shrink)

Limited air strikes present an attractive “middle-ground approach” for policymakers, as they are less costly to coercers than deploying troops on the ground. Policymakers believe that threatening and employing limited air strikes signal their resolve to targets. In this essay, as part of the roundtable on “The Ethics of Limited Strikes,” I debunk this fallacy and explain how the same factors that make limited air strikes attractive to coercers are also those that undermine their efficacy as a coercive tool of (...) foreign policy. The limited nature of these air strikes undermines the ability of coercers to effectively signal their resolve. In turn, coercive threats of limited air strikes are less likely to be credible, creating a vicious cycle: policymakers threaten to employ air strikes because they are less costly but then often need to follow through on those threats as target states fail to acquiesce to their demands, precisely because limited air strikes are less costly for the coercer. Limited air strikes, therefore, can actually be a source of conflict escalation and lead policymakers to engage in military action that they would prefer to avoid. I further explain why failing to follow through on such coercive threats can undermine a leader's reputation for resolve and lead to future crisis escalation. Finally, I discuss what this quagmire means for the ethics of the threat and the use of air strikes, particularly for the principles of right intention, likelihood of success, and probability of escalation. (shrink)

Since the modern era, the discourse of punishment has cycled through three sets of questions. The first, born of the Enlightenment itself, asked: On what ground does the sovereign have the right to punish? Nietzsche most forcefully, but others as well, argued that the question itself begged its own answer. The right to punish, they suggested, is what defines sovereignty, and as such, can never serve to limit sovereign power. With the birth of the social sciences, this skepticism gave (...) rise to a second set of questions: What then is the true function of punishment? What is it that we do when we punish? From Durkheim to the Frankfurt School to Michel Foucault, twentieth century moderns explored social organization, economic production, political legitimacy, and the construction of the self_turning punishment practices upside down, dissecting not only their repressive functions but more importantly their role in constructing society and the contemporary subject. A series of further critiques_of meta_narratives, of functionalism, of scientific objectivity_softened this second line of inquiry and helped shape a third set of questions: What does punishment tell us about ourselves and our culture? What is the cultural meaning of our punishment practices? These three sets of questions set the contours of our modern discourse on crime and punishment.What happens now_ now that we have seen what lies around the cultural bend and realize that the same critiques apply with equal force to any interpretation of social meaning that we could possibly read into our contemporary punishment practices? Should we continue to labor on this third and final set of questions, return to an earlier set, or, as all our predecessors did, craft a new line of inquiry? What question shall we_children of the twenty_first century_pose of our punishment practices and institutions?This essay suggests that the form of the question never really mattered. In all the modern texts, there always came this moment when the empirical facts ran out or the deductions of principle reached their limit_or both_and yet the reasoning continued. There was always this moment, ironically, when the moderns took a leap of faith. And it was always there, at that precise moment, that we learned the most: that we could read from the text and decipher a vision of just punishment that was never entirely rational, never purely empirical, and never fully determined by the theoretical premises of the author. In each and every case, the modern text let slip a leap of faith_an ethical choice about how to resolve a gap, an ambiguity, an indeterminacy in an argument of principle or fact.It is time to abandon the misguided project of modernity. Rather than continue to take these leaps of faith, it is time once and for all to recognize the critical limits of reason, and whenever we reach them, to rely instead on randomization. Where our facts run out, where our principles no longer guide us, we should leave the decision_making to the coin toss, the roll of the dice, the lottery draw_in sum, to chance. This essay begins to explore what that would mean in the field of crime and punishment. (shrink)

The phenomenon of ‘plant sleep’ – whereby vegetables rhythmically open and close their leaves or petals in daily cycles – has been a continual source of fascination for those with botanical interests, from the Portuguese physician Cristóbal Acosta and the Italian naturalist Prospero Alpini in the sixteenth century to Percy Bysshe Shelley and Charles Darwin in the nineteenth. But it was in 1757 that the topic received its earliest systemic treatment on English shores with the prodigious author, botanist, actor, and (...) Royal Society critic John Hill’s The Sleep of Plants, and Cause of Motion in the Sensitive Plant. As the present article aims to illustrate, Hill and his respondents used this remarkable behaviour, exhibited by certain plants, as a lens through which to reassess the nature of vegetables, and to address pressing questions of wider natural philosophical import, particularly the degree of continuity between the structures and functions of plants and animals and whether similar mechanisms necessarily account for related movements in different life forms. These disputes, this paper contends, also had profound methodological implications regarding the proper way to conduct experiments, the extent to which it was acceptable to extrapolate from observations, and the status of causal explanations. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Weird John Brown: Divine Violence and the Limits of Ethics by Ted A. Smith, and: Bodies of Peace: Ecclesiology, Nonviolence, and Witness by Myles WerntzRyan Andrew NewsonWeird John Brown: Divine Violence and the Limits of Ethics Ted A. Smith Stanford, CA: Stanford University Press, 2015. 224pp. $22.95Bodies of Peace: Ecclesiology, Nonviolence, and Witness Myles Werntz Minneapolis: Fortress Press, 2014. 272pp. $44.00Arguments about the morality of violence are currently (...) being reinvigorated by a diverse group of theologians who are considering these questions for a world in which the nation-state no longer provides the sole context for political reflection. Both Ted Smith and Myles Werntz have contributed to this budding conversation by reframing the way theological ethicists might approach questions of violence and war.In Weird John Brown, Ted Smith provides an engaging account of the violent abolitionist, examining the theological significance of John Brown’s raid on Harpers Ferry, Virginia. Smith uses Brown to question the capacity of ethics as a discipline to assess the significance of every phenomenon. By “ethics,” Smith means those forms of moral reasoning that assume reality to be composed of a closed network of cause and effect. Ethics thus understood exerts a “strong gravitational pull” on the contemporary mind, privileging “universalizable moral obligations” that take precedence over goods like beauty or piety and resisting the suggestion that any act’s significance may lie beyond this-worldly relationships (4–5). In fighting for a just cause by violent, treasonous means, Brown problematizes the sufficiency of such ethical habits of description. [End Page 223]Neither crazed fundamentalist nor freedom fighter, Brown’s significance for Smith lies beyond ordinary ethical considerations. He is a “portent,” following W.E.B. Du Bois—a sign questioning the state’s presumed monopoly on legitimate violence (17), pronouncing judgment over a nation built on chattel slavery, and (perhaps) issuing hope for a new society to emerge in his wake (175). Only as “a flawed prophet who is caught up in a story of redemption that he cannot quite imagine” (88) does Brown’s significance come into view.For Smith, the state executing him is clearly not “less violent” than Brown. Indeed, Brown reveals the particular form of violence to which the “neutral” rule of law gives rise: violence reinforcing the legitimacy of state rule. Following Walter Benjamin, Smith describes a “mythic” cycle whereby an original violence that establishes a state, and the law that later legitimates that founding, reinforce one another (56, 70–71). Justice becomes equated with “law,” with no place for exceptions to law that might contribute to the overall health of the state (57). This cycle cannot be broken by moral imperatives articulated within the system; it is broken only by what Benjamin calls “divine violence”—necessarily exceptional interruptions to the cycle that challenge the system as such (73).Recognizing the possibility of such interruptions to the ethical does not eliminate the need for phronesis. Instead, it transposes practical wisdom to a key “marked by freedom and the love that freedom makes possible” (82); it stresses the importance of cultivating “the capacity for reasoning together about the form of a higher law” (109) that thereby relieves the law from being all in all. And while many fear that phrases like “higher law” only incite irrational, unchecked violence, Smith rightly sees that “mundane” politics can manifest a violence that is equally devastating, while concepts like “higher law” have checked violence as often as inspired it. To respond to violence done in the name of a higher law, we need better and deeper religious reasoning, “the kind that can imagine the higher law as something other than a code to be enforced and history as something more than an endless succession of homogeneous moments to be wrenched into conformity with the law” (88).Smith does not directly address the question of justified violence. His task is more difficult: to reset the parameters of such discussions so that they might continue without being restricted by “intramundane accounts of the good” (35). Smith thus challenges just warriors and pacifists alike not to argue on prudential grounds alone but to risk reasoning beyond the state’s... (shrink)

ABSTRACT The phenomenon of ‘plant sleep’ – whereby vegetables rhythmically open and close their leaves or petals in daily cycles – has been a continual source of fascination for those with botanical interests, from the Portuguese physician Cristóbal Acosta and the Italian naturalist Prospero Alpini in the sixteenth century to Percy Bysshe Shelley and Charles Darwin in the nineteenth. But it was in 1757 that the topic received its earliest systemic treatment on English shores with the prodigious author, botanist, actor, (...) and Royal Society critic John Hill’s The Sleep of Plants, and Cause of Motion in the Sensitive Plant. As the present article aims to illustrate, Hill and his respondents used this remarkable behaviour, exhibited by certain plants, as a lens through which to reassess the nature of vegetables, and to address pressing questions of wider natural philosophical import, particularly the degree of continuity between the structures and functions of plants and animals and whether similar mechanisms necessarily account for related movements in different life forms. These disputes, this paper contends, also had profound methodological implications regarding the proper way to conduct experiments, the extent to which it was acceptable to extrapolate from observations, and the status of causal explanations. (shrink)

The measurement of food intake has long been used to describe ‘adaptation’ to low energy intakes in certain tropical peoples. However, the methods available to quantify food intake are unlikely to reflect accurately real energy intakes in free living peoples. Alternatively, estimating energy expenditure shows some promise—particularly the measurement of basal metabolic rate . The BMR may be measured effectively in males, but females show wide intra-individual variation in BMR during their menstrual cycle, which makes BMR measurements more difficult (...) to interpret in the context of adaptation. The use of double-labelled water may be the only method suitable to quantify and define ‘adaptation’ to low intakes in women. (shrink)

A physiological model for short-term memory (STM) based on dual theta (5–10 Hz) and gamma (20–60 Hz) oscillation was proposed by Lisman and Idiart (1995). In this model a memory is represented by groups of neurons that fire in the same gamma cycle. According to this model, capacity is determined by the number of gamma cycles that occur within the slower theta cycle. We will discuss here the implications of recent reports on theta oscillations recorded in humans performing (...) the Sternberg task. Assuming that the oscillatory memory models are correct, these findings can help determine STM capacity. (shrink)

A general conceptual framework for large-scale neocortical dynamics based on data from many laboratories is applied to a variety of experimental designs, spatial scales, and brain states. Partly distinct, but interacting local processes (e.g., neural networks) arise from functional segregation. Global processes arise from functional integration and can facilitate (top down) synchronous activity in remote cell groups that function simultaneously at several different spatial scales. Simultaneous local processes may help drive (bottom up) macroscopic global dynamics observed with electroencephalography (EEG) or (...) magnetoencephalography (MEG). A local/global dynamic theory that is consistent with EEG data and the proposed conceptual framework is outlined. This theory is neutral about properties of neural networks embedded in macroscopic fields, but its global component makes several qualitative and semiquantitative predictions about EEG measures of traveling and standing wave phenomena. A more general “metatheory” suggests what large-scale quantitative theories of neocortical dynamics may be like when more accurate treatment of local and nonlinear effects is achieved. The theory describes the dynamics of excitatory and inhibitory synaptic action fields. EEG and MEG provide large-scale estimates of modulation of these synaptic fields around background levels. Brain states are determined by neuromodulatory control parameters. Purely local states are dominated by local feedback gains and rise and decay times of postsynaptic potentials. Dominant local frequencies vary with brain region. Other states are purely global, with moderate to high coherence over large distances. Multiple global mode frequencies arise from a combination of delays in corticocortical axons and neocortical boundary conditions. Global frequencies are identical in all cortical regions, but most states involve dynamic interactions between local networks and the global system. EEG frequencies may involve a “matching” of local resonant frequencies with one or more of the many, closely spaced global frequencies. Key Words: binding problem; cell assemblies; coherence; EEG; limit cycles; neocortical dynamics; pacemakers; phase locking; spatial scale; standing waves; synchronization. Footnotes1 The relationship between the synaptic action fields proposed in the target article and cell assemblies is clarified with Figure R1 (p. 416) of the Response. (This figure was not available to Commentators. (shrink)

Origin of a dissipative structure in a chemical dynamic system: occurs under the following constraints: 1) Affinity must be high. (The system must be far from equilibrium.); 2) There must be an auto-catalytic process; 3) A process that reduces the concentration of the auto-catalyst must operate; 4) The relevant parameters (rate constants, etc.) must lie in a range corresponding to a limit cycle trajectory. That is, there must be closure of the network of reaction such that a state (...) sufficiently close to the prior condition is achieved at the corresponding part of each oscillation. If these constraints continue to be met interactions of the system with the rest of the world are quite different in the presence of the dissipative structure than they would be in the absence of that self-organized coherence. Closure of a network of relationships which gives rise to a dissipative structure is a 'unit-determining' feature. The effects of the structure as a whole are the resultants of the effects of the components, but the concentrations of the components at any instant are effects of the closure of the limit cycle. This is an influence on components arising from what those components constitute --- downward causation. (shrink)

Limit cycles, because they are constituted of a periodic succession of states (discrete or continuous) constitute a good manner to store information. From any points of the state space reached after a perturbation or stimulation of the cognitive system storing this information, one can aim to join through a more or less long return trajectory a precise neighbourhood of the asymptotic trajectory at a specific moment (or a specific place) on the limit cycle, i.e. where the information (...) of interest stands. We propose that the isochronal fibration, initially imagined and described by A. T. Winfree may be an excellent way to connect directly those two locations. Each isochron is indeed the set of points in temporal phase with one single point of the attractor. The characterisation of the isochronal fibration of various dynamical systems is not easy and until now has principally only been done numerically but not analytically. By integrating the homogeneous solutions of the dynamical system we can solve this fibration in the case of the well known anharmonic pendulum. Other isochronal fibration on classical examples such as the van der Pol system and the non-symmetrical PFK limit cycle are obtained numerically and we also provide the first numerical study on 3-dimentional systems like the anharmonic pendulum with a linear relaxation on its third variable and the Lorenz attractor. The empirical approach seems us useful for dealing with the isochronal fibration which could constitute a powerful tool for understanding and controlling the dynamics of biological or biological-inspired systems. (shrink)

When a group of processes achieves such closure that a set of states of affairs recurs continually, then the effect of that coherence on the world differs from what would occur in the absence of that closure. Such altered effectiveness is an attribute of the system as a whole, and would have consequences. This indicates that the network of processes, as a unit, has ontological significance. Whenever a network of processes generates continual return to a limited set of states of (...) affairs, the system may function as a “whole”— with respect to appropriate interaction partners. The balance achieved by the processes provides the form of definiteness of a unified agent. The causal powers of such coherent aggregates are indeed just the powers of the “constituents acting in concert”. However, the components act in concert in the specific way they do only because of their inclusion in the closed set of interactions that defines the coherence. This renders the causal powers of the coherence defined by that closure non-redundant, and hence the coherence, as a unit, is ontologically significant. The form of definiteness that provides internal coherence also grounds external efficacy of the societal aggregation. The closure is a structural feature of the coherence — possibly, but not necessarily, apparent in spatial structuring. This approach can provide a unified account that includes quantum microphysics, systems biology, and the philosophy of organism ─ without reducing any of these to another. (shrink)

This paper deals with the problem of reconstruction of the intergenic interaction graph from the raw data of genetic co-expression coming with new technologies of bio-arrays (DMA-arrays, protein-arrays, etc.). These new imaging devices in general only give information about the asymptotical part (fixed configurations of co-expression or limit cycles of such configurations) of the dynamical evolution of the regulatory networks (genetic and/or proteic) underlying the functioning of living systems. Extracting the casual structure and interaction coefficients of a gene interaction (...) network from the observed configurations is a complex problem. But if all the fixed configurations are supposedly observed and if they are factorizable into two or more subsets of values, then the interaction graph possesses as many connected components as the number of factors and the solution is obtained in polynomial time. This new result allows us for example to partly solve the topology of the genetic regulatory network ruling the flowering in Arabidopsis thaliana. (shrink)

Recently, megastable systems have grabbed many researchers’ interests in the area of nonlinear dynamics and chaotic systems. In this paper, the oscillatory terms’ coefficients of the simplest megastable oscillator are forced to blink in time. The forced system can generate an infinitive number of hidden attractors without changing parameters. The behavior of these hidden attractors can be chaotic, tori, and limit cycle. The attractors’ topology of the system seems unique and looks like picture frames. Besides, the existence of (...) different coexisting attractors with different kinds of behaviors reflects the system's high sensitivity. Using the sample entropy algorithm, the system’s complexity for different initial values is assessed. In addition, the circuit of the introduced forced system is designed, and the possibility of implicating the system with analog elements is investigated. (shrink)

Aggregation methods allow one to replace a large scale dynamical system (micro-system) by a reduced dynamical system (macro-system) governing a small number of global variables. This aggregation of variables can be performed when two time scales exist, a fast time scale and a slow time scale. Perturbation theory allows to obtain an approximated aggregated dynamical system which describes the behaviour of a few number of slow time varying variables which are constants of motion of the fast part of the micro-system. (...) Aggregation methods are applied to the case of the devastation of the great barrier reef by the starfishes. We recall the Antonelli/Kazarinoff model which implies a stable limit cycle for the corals and starfish populations. This prey-predator model describes the interactions between two species of corals and the starfish. Then, we generalize the Antonelli/Kazarinoff model to the case of two spatial patches with a fast part describing the starfish migration on the patches and the human manipulation of the communities by divers and, a slow part describing the growth and the interactions between the populations. We obtain an aggregated model governing the total coral densities on the patches and the total starfish population. This model can exhibit stable limit cycle oscillations and a Hopf bifurcation. The critical value of the bifurcation parameter is expressed in terms of the proportions of coral species and starfish on the two patches. This implies for example that rather than random killing of starfish by the Australian military, it may be better to send teams of divers to outbreaking reefs when they first occur who will then manipulate the community structure to increase protection. (shrink)

It is the prevailing paradigm in contemporary physics to model the dynamical evolution of physical systems in terms of a real parameter conventionally denoted as 't' ('little tee'). We typically call such dynamical models laws of nature' and t we call 'physical time'. It is common in the philosophy of time to regard t as time itself, and to take the global structure of general relativity as the ultimate guide to physical time, and so consequently the true nature of time. (...) In this paper we defend the idea that physical time, t, is rather better defined as an operational modelling parameter: we measure relations between changing physical quantities using bespoke physical systems---i.e. clocks---that coordinate local coincidences. We argue that the sorts of physical systems that make good clocks---what we call precision clocks---are those that exhibit self-sustained oscillations known as limit cycles, which are ubiquitous in open, driven, stable, dissipative systems. We develop the physical and philosophical ramifications of this conception of physical time, particularly the notion that physical time does not track something 'out there' in the world. As a result, we speculate that physical time is perhaps not as different from manifest time as many philosophers of time (and apparently general relativity) seem to suggest. (shrink)

In this paper, a fresh shear-displacement model is developed for the plastic deformation of the bulk metallic glasses. The multiscale behavior in the shear banding process and the dynamics transition with the parameters are investigated in analytical form. We present a theoretical support for the transition from unstable states to stable states in the experiment by multiscale analysis and the stability analysis. With the small parameter increasing from negative to positive, the stability of the shear slipping displacement system changes, and (...) there is a limit cycle at the transition stage. Meanwhile, the phase diagram and the power spectrum also suggest that there is dynamics transition with the parameter changing. Moreover, the complexity is analyzed for different disturbance parameters, and it is coincident with the fact that the solution is more irregular for larger disturbance. In addition, we find that the amplitude of solution decreases with the temperature decreasing, which is consistent with the experimental results that the amplitude of the serration is smaller and smaller as the temperature decreases. (shrink)

We give in this paper indications about the dynamical impact coming from the main sources of perturbation in biological regulatory networks. First, we define the boundary of the interaction graph expressing the regulations between the main elements of the network . Then, we search what changes in the state values on the boundary could cause some changes of states in the core of the system . After, we analyse the role of the mode of updating on the asymptotics of the (...) network, essentially on the occurrence of limit cycles . Finally, we show the influence of some topological changes on the dynamical behaviour of the system. (shrink)