Dark Time Research Articles

In These Dark Times: Exploring Our Values as Transactional Analysts

This essay addresses personal and professional values underlying (but not necessarily consciously articulated) how we practice and what we define as healthy outcomes for our efforts as transactional analysts. It is an invitation to consider the importance of a professional culture of curiosity and respect, one that can welcome and make use of difference and conflict, stressing the need for the elaboration of theories and values that actively attend to social and political forces that shape beliefs and behaviors. Central to this essay is a critique of the incorporation of “I’m OK, You’re OK” as a central value of transactional analysis.

Dark Futures: Toward a Philosophical Archaeology of Hope

AbstractEarly in World War I, Virginia Woolf wrote these words: ‘The future is dark, which is on the whole, the best thing the future can be […]’. It is tempting to assume that darkness simply hides the unknown and the threatening. It is more challenging to think of it as Woolf did: rich with possibility in even the most desperate times.We live in what many would readily describe as dark times. These times have brought (among much else) a once-in-a-century public health crisis, the continued redemption of toxic white supremacy, declining trust in and support for public institutions, and growing evidence of impending climate devastation. ‘Dark Futures’ will consider some of the scenes of this devastation and mine them for insights into our predicaments and our prospects.

Operation of a Ramsey-CPT microcell atomic clock with driving current-based power modulation of a VCSEL

We report on the operation of a coherent population trapping (CPT) microcell atomic clock using a pulsed Ramsey-like interrogation. The Ramsey-CPT sequence, defined by two-step optical pulses separated by a free-evolution dark time, is produced by switching on and off the output power of a low-power vertical-cavity surface-emitting laser, through direct modulation of its driving current. High-contrast and narrow Ramsey-CPT fringes are detected without the use of any external optical modulator stage. We demonstrate closed-loop operation of the clock based on high-speed digital signal processing implemented in a field programmable gate array board. The clock's short-term fractional frequency stability is 1.3 × 10−10τ−1/2 until 2000 s. A power light-shift coefficient of 8 × 10−11/μW, in relative value, is obtained for a dark time of 150 μs. This value is about ten times lower than in the continuous regime. These results show the feasibility of fully integrated atomic clocks based on Ramsey spectroscopy, which could provide enhanced long-term stability.

Poetry, History, Memory: Wang Jingwei and China in Dark Times by Zhiyi Yang (review)

Poetry, History, Memory: Wang Jingwei and China in Dark Times by Zhiyi Yang (review)

The visionaries: Arendt, Beauvoir, Rand, Weil, and the power of philosophy in dark times

The visionaries: Arendt, Beauvoir, Rand, Weil, and the power of philosophy in dark times

Da catástrofe das emergências humanitárias à melancolização

This article is a theoretical study arising from the umbrella research project, Psychoanalytic Investigation of Clinical Phenomena in Depression in the Context of COVID-19, by the Laboratory for the Investigation of Contemporary Psychopathologies (UFF. Volta Redonda Campus), in an inter-institutional partnership with the Graduate Program in Psychology at UFRJ. The aim of the research is to demarcate and define the effects of the contemporary mutation of the social bond on subjectivity, based on the recognition that humanitarian/sanitary emergencies are catastrophic for subjective functioning. In this paper, we will present the Freudian démarche that led us to recognize melancholization as the main impact of humanitarian/sanitary emergencies on subjective functioning. The paper recalls the use of the term catastrophe and its epistemological status within the framework of psychoanalysis. This term is fundamental to our research hypothesis: humanitarian/sanitary emergencies are a catastrophe because they produce the civilizational ruin of guarantees for the affected population and the suspension of the functioning of subjective defences and sublimatory strategies for dealing with the condition of helplessness. By considering humanitarian/sanitary emergencies as a catastrophe, the paper highlights, in the line of argument developed by Sigmund Freud, the emergence of the affect of despondency or melancholization as pathos in dark times of humanitarian/sanitary emergencies.

Methyl Jasmonate Modulates Feeding Behaviors and Hypothalamic Expression of the Orexin 1 Receptor in Rats.

Active plant ingredients have been successfully used in modern medicine to control appetite and energy hemostasis. This study was designed to evaluate the efficacy of the phytohormone methyl jasmonate (MJ) on food-related behaviors in rats. Adult male Wistar rats were randomly divided into different groups (7 rats) and infused intracerebroventricularly (i.c.v.) with MJ vehicle (DMSO) or MJ (2.5, 5 and 10 μg/rat). Then, the individual rats were placed in an automated open field-like apparatus to assess a 12-h food-related activity in light and dark times. After behavioral tests, immunofluorescence staining of the orexin 1 receptor (Orx1R) was studied in the hypothalamus of rats. MJ (2.5, 5, and 10 μg/rat) administration significantly decreased food intake in the light and dark phases compared with the control group. Moreover, all the MJ-treated groups exhibited a decrease in visits to food containers at the light and dark times (p < 0.001). In addition, rats infused with MJ at 5 μg and 10 μg spent less time in the ports of food containers in the light and dark phases in comparison with control rats. Time in zone-related to food and locomotor activity was significantly decreased in the MJ (5 μg) groups during the light time and in all MJ-injected groups in the dark time. Moreover, hypothalamic expression of Orx1R in rats treated with MJ (5 μg) was significantly lower as compared to the control group. Overall, the results indicated the potential of MJ to modulate feeding-related behavior and Orx1R expression in the hypothalamus of rats.

“Stories one tells in dark times”: Fabulation, fugitivity, and futurity in Olivia Wenzel's 1000 Serpentinen Angst

AbstractThis article engages with aesthetic acts of experimentation in Olivia Wenzel's 1000 Serpentinen Angst. Building on recent scholarship on the politics of aesthetics in Wenzel's text, I argue that these experiments are intertwined with key themes in the book, particularly issues of racialization and of Black (im‐)possibility in present‐day Germany. In this context, my article focuses on a largely overlooked aspect of Wenzel's text, namely its surreal, fantastical, and speculative elements. Drawing on Tavia Nyong'o and Saidiya Hartman's notion of “(critical) fabulation,” I propose that Wenzel's writing mobilizes fantastic, imaginative, and speculative elements to unsettle oppressive realities and realisms in favor of alternative modes of world‐ and future‐making. Inspired by Tina M. Campt's work, I conceptualize these re‐makings as “fugitive” and quotidian strategies, developed in response to a broken world, which still have the potential to generate new infrastructures for relationality and futurity.

Hermeneutics in Dark Times

Hermeneutics in Dark Times

Dark times: iminothioindoxyl-C-nucleoside fluorescence quenchers with defined location and minimal perturbation in DNA.

Fluorescence quenchers for application in DNA - like the BHQ family - tend to be large molecules which need to be attached, often post-synthetically, via long linkers. In this study, we present two new iminothioindoxyl-C-nucleosidic quenchers which are very compact, feature a native backbone and can be introduced into DNA via regular solid-phase synthesis. Especially with dT as juxtaposed nucleobase, they have a defined location and orientation in a DNA duplex with minimal perturbation of the structure and hence interaction capabilities. Depending on the nature of the fluorophore, they can be used for orientation-(un)specific FRET studies. Their Förster radius is smaller than the one of BHQ-2. This makes these quenchers ideal for sophisticated studies using conditional quenching in the range between 470 and 670 nm in DNA.

Non-deep physiological dormancy in seeds of two endangered medicinal alpine species of Rhodiola from the Hengduan Mountains of southwest China

We investigated seed dormancy and germination characteristics of two endangered medicinal species, Rhodiola crenulata and R. fastigiata, from the high altitude (alpine) Hengduan Mountains in China. Germination of fresh seeds was tested in light and dark at six constant (1, 5, 10, 15, 20 and 25°C) and three alternating (5/1, 15/5 and 25/15°C) temperatures and again, after six months of dry after-ripening (DAR) and cold-wet stratification (CS). Fresh seeds of R. crenulata germinated to ≥ 80% at 10, 15, 25/15 and 15/5°C in light, but germination was significantly lower at 1, 5, 20 and 25°C. Germination of fresh seeds in dark was 0 to 25% across the range of temperatures. DAR and CS for six months increased germination and/or decreased mean germination time in both light and dark. Fresh seeds of R. fastigiata germinated to &gt; 95% in both light and dark, except at 1°C in light and 1, 5, and 5/1°C in dark, where germination was &lt; 50%. DAR and CS for six months increased germination and/or decreased mean germination time. Seeds of the two Rhodiola species have (conditional) non- deep physiological dormancy. Germination responses to temperature and light prevent seeds from germinating in the autumn of dispersal, but allow them to germinate quickly after snow melt the next spring. This study provides a method for obtaining plants from seeds of the two Rhodiola species for medicinal uses, which could reduce the harvesting pressure placed on natural populations.

Prophetic dissent in dark times: the new Poor People’s Campaign and the rhetoric of national redemption

ABSTRACT In this paper, we offer an analysis of an important social movement challenging the fantasy of Christian nationalism: the new Poor People’s Campaign, and specifically the rhetoric of the Bishop Dr. William J. Barber II. We argue that Barber’s rhetoric represents a source of dissent against Christian nationalism through his strategic use of the jeremiad. Barber’s progressive jeremiad offers a distinctively moral narrative that recovers the radical Christian legacy of Dr. Martin Luther King, Jr. Ultimately, we argue that Barber’s jeremiad advances a distinctive narrative of American national redemption through democratic renewal and reconstruction.

Search for Dark Photons in Rare Z Boson Decays with the ATLAS Detector.

A search for events with a dark photon produced in association with a dark Higgs boson via rare decays of the standard model Z boson is presented, using 139 fb^{-1} of sqrt[s]=13 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider. The dark boson decays into a pair of dark photons, and at least two of the three dark photons must each decay into a pair of electrons or muons, resulting in at least two same-flavor opposite-charge lepton pairs in the final state. The data are found to be consistent with the background prediction, and upper limits are set on the dark photon's coupling to the dark Higgs boson times the kinetic mixing between the standard model photon and the dark photon, α_{D}ϵ^{2}, in the dark photon mass range of [5, 40]GeV except for the ϒ mass window [8.8, 11.1]GeV. This search explores new parameter space not previously excluded by other experiments.

Salvar la palabra y reinventar la imagen en tiempos de oscuridad

Saving the word and reinventing the image in times of darkness

Survey Operations for the Dark Energy Spectroscopic Instrument

The Dark Energy Spectroscopic Instrument (DESI) survey is a spectroscopic survey of tens of millions of galaxies at 0 < z < 3.5 covering 14,000 sq. deg. of the sky. In its first 1.1 yr of survey operations, it has observed more than 14 million galaxies and 4 million stars. We describe the processes that govern DESI’s observations of the 15,000 fields composing the survey. This includes the planning of each night’s observations in the afternoon; automatic selection of fields to observe during the night; real-time assessment of field completeness on the basis of observing conditions during each exposure; reduction, redshifting, and quality assurance of each field of targets in the morning following observation; and updates to the list of future targets to observe on the basis of these results. We also compare the performance of the survey with historical expectations and find good agreement. Simulations of the weather and of DESI observations using the real field-selection algorithm show good agreement with the actual observations. After accounting for major unplanned shutdowns, the dark time survey is progressing about 7% faster than forecast, which is good agreement given approximations made in the simulations.

Lala activists in dark times: queer feminist resistance to the cyber-nationalist attacks in China

This article explores the challenges faced by Chinese queer feminist activists as they navigate the rise of cyber-nationalist attacks. Drawing from the author’s involvement in China’s lala and feminist movements, activists writings, and three interviews, the article discusses how lala activists cope with the rising Chinese cyber-nationalism through various strategies and reconceptualize activism beyond identity groups. The first part of the paper situates the rise of nationalism in Chinese cyberspace in relation to global neo-fascism, identifying the overlapping cyber-trolling infrastructures, the basic form of “palingenetic ultra-nationalism”, and the anti-gender/queer sentiments in neo-fascist movements transcending ideological and political divisions in different regions. The second part discusses the difficulties faced by lala activists when dealing with imbalanced accountability and censorship, as well as the “hegemonic masculinity” in cyber-nationalist attacks, revealing that hegemonic masculinity seeks not only to reinforce traditional gender norms but also to control everyone’s personal lives. The last part argues that Chinese lala activists’ friendship-based alliances provide a valuable strategy under intensifying cyber-nationalism and state censorship. By engaging in diverse social issues and collaborating with various groups, this friendship-based solidarity prioritizes a caring life and fosters a situation where activists explore different social issues, initiate actions, and seek supporters based on specific issues instead of identities. This strategy may offer valuable insights into feminist/queer resistance during dark times, when the rise of global neo-fascism and its appropriation of identity discourse increasingly creates incommensuration between national identities and gender/sexuality identities.

Sharks in the dark: Quantifying HFT dark pool latency arbitrage

We investigate stale reference pricing and liquidity provision in dark pools using proprietary, participant-level regulatory data. We show a substantial amount of stale trading occurs, imposing large costs on passive dark pool participants. Consistent with these costs, HFTs almost never provide liquidity in the dark, instead frequently consuming liquidity, in particular in order to take advantage of stale reference prices. Finally, we show that market design interventions randomizing dark execution times are successful at countering dark pool latency arbitrage, protecting passive providers of dark liquidity. Our results have substantial implications for practitioners and policymakers aiming to improve liquidity provision in dark pools.

Liberalism in Dark Times

Liberalism in Dark Times

Length and Charge of the N-terminus Regulate the Lifetime of the Signaling State of Photoactive Yellow Protein.

Photoactive yellow protein (PYP) is one of the most extensively studied photoreceptors. Nevertheless, the role of the N-terminus in the photocycle and structural transitions is still elusive. Here, we attached additional amino acids to the N-terminus of PYP and investigated the effect of the length and charge of additional N-terminal residues using circular dichroism, two-dimensional nuclear magnetic resonance (2D-NMR), transient absorption (TA), and transient grating (TG) spectroscopic techniques. TA experiments showed that, except for negatively charged residues (5D-PYP), additional N-terminal residues of PYP generally enable faster dark recovery from the putative signaling state (pB2) to the ground state (pG). TG data showed that although the degree of structural changes can be controlled by adjusting specific amino acid residues in the extended N-terminus of N-terminal extended PYPs (NE-PYPs), the dark recovery times of wt-PYP and NE-PYPs, except for 5D-PYP, are independent of the structural differences between pG and pB2 states. These results demonstrate that the recovery time and the degree of structural change can be regulated by controlling the length and sequence of N-terminal residues of PYP. The findings in this study emphasize the need for careful attention to the remaining amino acid residues when designing recombinant proteins for genetic engineering purposes.

Seasonal variation in sleep time: jackdaws sleep when it is dark, but do they really need it?

Sleep is an important behavioural and physiological state that is ubiquitous throughout the animal kingdom. Birds are an interesting group to study sleep since they share similar sleep features with mammals. Interestingly, sleep time in birds has been shown to vary greatly amongst seasons. To understand the mechanisms behind these variations in sleep time, we did an electro-encephalogram (EEG) study in eight European jackdaws (Coloeus monedula) in winter and summer under outdoor seminatural conditions. To assess whether the amount and pattern of sleep is determined by the outdoor seasonal state of the animals or directly determined by the indoor light–dark cycle, we individually housed them indoors where we manipulated the light–dark (LD) cycles to mimic long winter nights (8:16 LD) and short summer nights (16:8 LD) within both seasons. Jackdaws showed under seminatural outdoor conditions 5 h less sleep in summer compared to winter. During the indoor conditions, the birds rapidly adjusted their sleep time to the new LD cycle. Although they swiftly increased or decreased their sleep time, sleep intensity did not vary. The results indicate that the strong seasonal differences in sleep time are largely and directly driven by the available dark time, rather than an endogenous annual clock. Importantly, these findings confirm that sleep in birds is not a rigid phenomenon but highly sensitive to environmental factors.