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The State of Fatigue and Sleep among Clinical Nurses in Japan  [PDF]
Naomi Sumi, Naotaka Sugimura, Yuko Yoshida, Rika Yano
Open Journal of Nursing (OJN) , 2017, DOI: 10.4236/ojn.2017.712104
The objective of this study was to investigate the state of fatigue and sleep among clinical nurses in Japan. This descriptive cross-sectional study was conducted from December 2015 to January 2016. The participants were nurses who worked in public hospitals with 500 beds in the major cities and regional cities of Hokkaido. Fatigue was quantitatively assessed using the Cumulative Fatigue Symptoms Index (CFSI). Among nurses in their twenties, the rate of complaints about anxiety and decrease in vitality were high, which was replaced with complaints about irritability among nurses in their thirties. The most popular complaint among nurses in their forties was general fatigue. There was no difference in complaint ratios concerning the workplace location among nurses in their twenties and thirties, nurses in their forties working in suburban areas complained about fatigue more than their urban area. Nurses with sleep problems related to anxiety have a significantly higher complaint rate for all the eight items of CFSI compared with the nurses who do not have such problems (p < 0.001). This is an intermediate report and is part of a study that aims to develop a health management program for hospital nurses regarding fatigue and sleep.
Investigation of the Burnout Stages Experienced by Nurses Working in Hospitals and Related Factors  [PDF]
Naomi Sumi, Yuko Yoshida, Naotaka Sugimura, Rika Yano
Open Journal of Nursing (OJN) , 2018, DOI: 10.4236/ojn.2018.84022
Background: The purpose of this study was to elucidate the stages of nurse burnout in hospitals (their states of emotional exhaustion and depersonalization) as well as factors related to the nurses personal characteristics and coping behaviors in order to obtain suggestions for stress and health management strategies that nurses themselves can employ. Methods: We conducted a cross-sectional study using anonymous self-administered questionnaires. The subjects were nurses employed at public hospitals with 500 beds in 3 cities in Hokkaido, Japan. The questionnaire items for burnout were those included on the Japanese Maslach Burnout Inventory (MBI), which are designed to ascertain the subjects’ emotional exhaustion, depersonalization, and sense of personal accomplishment. In addition, we used 11 items related to physical and mental stress responses on the Stress Coping Inventory and the Brief Job Stress Questionnaire to determine factors such as the nurses’ basic attributes, whether or not they worked night shifts, and their overtime hours, etc. Results: We received responses from 1461 hospital nurses. Those whose scores for both emotional exhaustion and depersonalization were the mean or above were 40.2% of those in their twenties, 35.8% of those in their thirties, and 26.8% of those in their forties or older. The results of logistic regression analysis indicated that among those in the group that scored high for both emotional exhaustion and depersonalization, the influential factors were stress score (odds ratio 1.889), twenties age group (odds ratio 1.982), thirties age group (odds ratio 1.720), coping behavior: avoidance-focused behaviors (odds ratio 1.140), and engaged in childcare (odds ratio 0.487). Similarly, when looked at by age group, being in the twenties age group and having a spouse were influential factors (odds ratio 3.114 - 4.171).
Relationship between Sleep and Subjective Fatigue in Rotating Shift Nurses: Validation Using a Wearable Device  [PDF]
Yuko Yoshida, Naomi Sumi, Naotaka Sugimura, Fumie Nemoto, Rika Yano
Open Journal of Nursing (OJN) , 2018, DOI: 10.4236/ojn.2018.84023
The objective of this study was to determine if sleep indicators are associated with subjective fatigue in nurses working in a rotating, two-shift system with a 16-hour night shift, using the wearable device Fitbit One. Subjective fatigue was evaluated using the Subjective Fatigue Symptom Questionnaire (SFSQ), a rating scale developed by the Working Group for Occupational Fatigue of the Japan Society for Occupational Health. Subjects were asked to continuously wear a Fitbit One to obtain the following data: time in bed (TIB), deep sleep time, length and frequency of nighttime awakening, sleep efficiency, waking time, and bed time. Nurses had a mean age and standard deviation of 33.2 ± 7.5 years and had worked as nurses for 9.8 ± 6.2 years on average. Eight nurses were in their 20s (42.1%), 5 in their 30s (26.3%), and 6 in their 40s (31.6%). All participants were female. Participants SFSQ scores calculated from the 9 evenings in the study period were averaged to establish a threshold for categorizing high-fatigue (HF) and low-fatigue (LF) groups. No significant differences were found between HF and LF nurses in terms of TIB, deep sleep time, nighttime awakening time or frequency, or sleep efficiency on any type of day (as classified by shift, day off, etc.). Nurses in both groups woke up significantly later on days off and on pre-night-shift days than on day-shift days. These results demonstrate the variation in sleep patterns of nurses on a rotating, two-shift system between day-shift and night-shift days.
“Demeurer vivant jusqu’à...”: La question de la vie et de la mort et le “religieux commun” chez le dernier Ric ur “Demeurer vivant jusqu’à...”: La question de la vie et de la mort et le “religieux commun” chez le dernier Ric ur
Yasuhiko Sugimura
études Ricoeuriennes / Ricoeur Studies , 2012, DOI: 10.5195/errs.2012.142
Abstract: In spite of his clear and deliberate distinction between philosophical and religious discourse, Ricoeur lets these two aspects of his thought interweave with respect to the deep "conviction" motiving it. The idea of “attestation”, considered as the "password" granting access to his last "hermeneutics of the self", testifies to this in particular. This term, while containing a religious connotation, refers to what Heidegger calls Fundamentalontologie, in which attestation (Bezeugung) is totally de-theologized to indicate how Dasein assumes its own death. But Ricoeur only incorporates this notion into his thought by making it undergo a profound modification. Ricoeur replaces “being–toward–death” with “remaining alive until…”, which allows him to recognize “the religious in common.” How can we develop a conception of the philosophy of religion from this winding process? This article marks a first step toward answering that question. Malgré sa distinction nette qu’il maintient délibérément entre le discours philosophique et le discours confessionnel, Ricoeur laisse s’entrecroiser ces deux niveaux de sa pensée lorsqu’il s’agit de la “conviction” profonde qui la motive. L’idée d’ “attestation ”, considérée comme le “mot de passe” à sa dernière “herméneutique du soi”, en témoigne particulièrement. Tout en renfermant une connotation religieuse, ce terme renvoie à l’ontologie fondamentale heideggérienne, où l’attestation (Bezeugung) est totalement dé-théologisée pour désigner la manière dont le Dasein assume sa propre mort. Mais Ricoeur ne reprend cette notion de Heidegger qu’en lui faisant subir une profonde modification. Il remplace “l’être-pour-la-mort” par le “ demeurer vivant jusqu’à...”, dans la profondeur de laquelle Ricoeur parvient à discerner “ le religieux en commun”. De cette démarche tortueuse, comment peut-on tirer une possible conception de la “philosophie de la religion”? Cet article constitue une première étape pour répondre à cette question.
Introduction Introduction
Yasuhiko Sugimura
études Ricoeuriennes / Ricoeur Studies , 2012, DOI: 10.5195/errs.2012.158
Abstract: The French Introduction to a special issue on Ricoeur and Theology. L'introduction francaise au numero special sur Ricoeur et theologie.
Introduction Introduction
Yasuhiko Sugimura
études Ricoeuriennes / Ricoeur Studies , 2012, DOI: 10.5195/errs.2012.157
Abstract: An introduction to Vol 3, no. 2 (2012), a special issue on Ricoeur and theology. L'introduction anglais au numero sur Ricoeur et la theologie.
In-in formalism on tunneling background: multi-dimensional quantum mechanics
Kazuyuki Sugimura
Physics , 2013, DOI: 10.1103/PhysRevD.88.025037
Abstract: We reformulate quantum tunneling in a multi-dimensional system where the tunneling sector is non-linearly coupled to oscillators. The WKB wave function is explicitly constructed under the assumption that the system was in the ground state before tunneling. We find that the quantum state after tunneling can be expressed in the language of the conventional in-in formalism. Some implications of the result to cosmology are discussed.
Depth Perception and Defensive System Activation in a 3-D Environment
Emmanuelle Combe,Naotaka Fujii
Frontiers in Psychology , 2011, DOI: 10.3389/fpsyg.2011.00205
Abstract: To survive, animals must be able to react appropriately (in temporal and behavioral terms) when facing a threat. One of the essential parameters considered by the defensive system is the distance of the threat, the “defensive distance.” In this study, we investigate the visual depth cues that could be considered as an alarm cue for the activation of the defensive system. For this purpose, we performed an active-escape pain task in a virtual three-dimensional environment. In two experiments, we manipulated the nature and consistency of different depth cues: vergence, linear perspective, and angular size. By measuring skin conductance responses, we characterized the situations that activated the defensive system. We show that the angular size of the predator was sufficient information to trigger responses from the defensive system, but we also demonstrate that vergence, which can delay the emotional response in inconsistent situations, is also a highly reliable cue for the activation of the defensive system.
Continuity and estimates of the Liouville heat kernel with applications to spectral dimensions
Sebastian Andres,Naotaka Kajino
Mathematics , 2014,
Abstract: The Liouville Brownian motion (LBM), recently introduced by Garban, Rhodes and Vargas and in a weaker form also by Berestycki, is a diffusion process evolving in a planar random geometry induced by the Liouville measure $M_\gamma$, formally written as $M_\gamma(dz)=e^{\gamma X(z)-{\gamma^2} \mathbb{E}[X(z)^2]/2}\, dz$, $\gamma\in(0,2)$, for a (massive) Gaussian free field $X$. It is an $M_\gamma$-symmetric diffusion defined as the time change of the two-dimensional Brownian motion by the positive continuous additive functional with Revuz measure $M_\gamma$. In this paper we provide a detailed analysis of the heat kernel $p_t(x,y)$ of the LBM. Specifically, we prove its joint continuity, a locally uniform sub-Gaussian upper bound of the form $p_t(x,y)\leq C_{1} t^{-1} \log(t^{-1}) \exp\bigl(-C_{2}((|x-y|^{\beta}\wedge 1)/t)^{\frac{1}{\beta -1}}\bigr)$ for $t\in(0,\frac{1}{2}]$ for each $\beta>\frac{1}{2}(\gamma+2)^2$, and an on-diagonal lower bound of the form $p_{t}(x,x)\geq C_{3}t^{-1}\bigl(\log(t^{-1})\bigr)^{-\eta}$ for $t\in(0,t_{\eta}(x)]$, with $t_{\eta}(x)\in(0,\frac{1}{2}]$ heavily dependent on $x$, for each $\eta>18$ for $M_{\gamma}$-almost every $x$. As applications, we deduce that the pointwise spectral dimension equals $2$ $M_\gamma$-a.e.\ and that the global spectral dimension is also $2$.
Internal frontier: The pathophysiology of the small intestine
Haruhiko Sugimura,Satoshi Osawa
World Journal of Gastroenterology , 2013, DOI: 10.3748/wjg.v19.i2.161
Abstract: Even though the small intestine occupies a major portion of the abdominal space and is essential for life, in most pathology textbooks any chapter on small intestinal diseases, especially in human beings, is typically shorter than those for other gastrointestinal organs. Clinical and experimental investigations of the small intestine in various clinical situations, such as nutrition management, obesity interventions, and emergency care, have elucidated several important biological problems associated with the small intestine, the last frontier of gastroenterology. In this issue, a review by Professor Basson and his team at Michigan State University sheds light on the changes in the human small intestine under various conditions based on their clinical and surgical experience. With the advent of recent innovations in enteroscopy, a form of endoscopy used to examine deep within the small intestine, the issue that they highlighted, i.e., mucosal adaptation and atrophy of the human small intestine, has emerged as a major and manageable challenge for gastroenterologists in general, including the readers of the World Journal of Gastroenterology.
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