• 제목/요약/키워드: Suffer Group

검색결과 206건 처리시간 0.024초

An Efficient Revocable Group Signature Scheme in Vehicular Ad Hoc Networks

  • Zhao, Zhen;Chen, Jie;Zhang, Yueyu;Dang, Lanjun
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제9권10호
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    • pp.4250-4267
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    • 2015
  • Although many revocable group signature schemes has been proposed in vehicular ad hoc networks (VANETs), the existing schemes suffer from long computation delay on revocation that they cannot adapt to the dynamic VANETs. Based on Chinese remainder theorem and Schnorr signature algorithm, this paper proposes an efficient revocable group signature scheme in VANETs. In the proposed scheme, it only need to update the corresponding group public key when a member quits the group, and in the meanwhile the key pairs of unchanged group members are not influenced. Furthermore, this scheme can achieve privacy protection by making use of blind certificates. Before joining to the VANETs, users register at local trusted agencies (LTAs) with their ID cards to obtain blind certificates. The blind certificate will be submitted to road-side units (RSUs) to verify the legality of users. Thus, the real identities of users can be protected. In addition, if there is a dispute, users can combine to submit open applications to RSUs against a disputed member. And LTAs can determine the real identity of the disputed member. Moreover, since the key pairs employed by a user are different in different groups, attackers are not able to track the movement of users with the obtained public keys in a group. Furthermore, performance analysis shows that proposed scheme has less computation cost than existing schemes.

Circadian variation of IV PCA use in patients after orthognathic surgery - a retrospective comparative study

  • Park, Sookyung;Chi, Seong In;Seo, Kwang-Suk;Kim, Hyun Jeong
    • Journal of Dental Anesthesia and Pain Medicine
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    • 제15권3호
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    • pp.141-146
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    • 2015
  • Background: An understanding of the features of postoperative pain is essential for optimal analgesic dosing strategies. Using a visual analogue scale (VAS) score and patient controlled analgesia (PCA) infusion pattern analysis, an anesthesiologist can estimate when and how severely patients suffer from pain. Several reports have been published about circadian changes in the pain threshold. Postoperative pain was analyzed retrospectively in 250 patients who underwent orthognathic surgery. Methods: A total of 250 patients were allocated into two groups according to the time of recovery from anesthesia. Patients in the early group (group E) recovered from anesthesia before 06:00 p.m. Patients in the late group (group L) recovered from anesthesia after 06:00 p.m. All patients received intravenous patient controlled analgesia (IV PCA) at the end of the operation. The VAS score of pain intensity was measured. Self-administration of bolus analgesic from the IV PCA device was also analyzed according to actual time and elapsed time. Results: VAS scores showed no difference between the two groups except 36 hours after recovery from anesthesia. On POD1, there were two peaks for self-administration of bolus analgesics in group L and one peak in the morning for group E. Two peaks each in the morning and in the afternoon were shown in both groups on POD2. Conclusions: Diurnal variance in pain should be considered for effective dosing strategies.

뇌졸중 후 편마비 환자의 건측억제-환측유도 운동이 환측 상지기능에 미치는 효과 (The Effects of Constraint-induced Movement Therapy on Affected Upper Limb Functions in Patients with Hemiplegia)

  • 유광수;배정희
    • 지역사회간호학회지
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    • 제17권4호
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    • pp.482-491
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    • 2006
  • Purpose: Hemiplegia patients who were attacked by a stroke suffer from hemiplegic disabilities as well as motor disabilities. For them, rehabilitation cure is being carried out broadly. However, it is not enough for them to use the upper extremity than the lower extremity. For the use of the upper extremity, we examined the effect of constraint-induced movement therapy developed in this research on patients who experienced a stroke following hemiplegia. Method: For this study we selected 36 stroke patients who were registered at the community health center through accidental sampling, and assigned 21 of them to the experimental group, and 15 to the control group. The experimental group had constraint-induced movement therapy for 5 days and 7 hours a day from 9 to o'clock in the morning 9 to 4 o'clock in the afternoon 4 including warmup exercise and main exercise in the rehabilitation room, whereas the control group were restricted. Result: As a result of constraint-induced movement therapy, affected side elbow joint flexion range, side shoulder joint extension range and side shoulder joint of the flexion range of motions increased obviously in the experimental group compared to those in the control group. Conclusion: The result above clearly shows that constraint-induced movement therapy is an effective intervention for the rehabilitation of hemiplegia patients in increasing affected side elbow joint of the flexion range of motion, the shoulder joint extension, and the increase of flexion range of motion.

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만성 두통 환자에서 Botulinum Toxin Type A 치료 (Botulinum Toxin Type A Therapy in Chronic Headache Patients)

  • 문동언;문영은;김시현;김은성
    • The Korean Journal of Pain
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    • 제18권1호
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    • pp.29-33
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    • 2005
  • Background: Chronic headache (CH) constitutes a significant public health problem, impacting on both the individual sufferer and society. Patients with CH, unresponsive to drug therapy or nerve block, suffer considerable disability due to the frequency and severity of attacks; therefore, they should be considered for novel therapy. Botulinum toxin type A (BoNT-A) has shown significant promise in the management of CH. In this paper, we review recent evidence on the efficacy of BoNT-A, and also report our experience with this treatment in CH patients. Methods: BoNT-A was used to treat 69 CH patients, including 47 in a chronic migraine group and 22 in a non-migraine CH group, who showed therapy-resistance to palliative drug or nerve block. We investigated the demography, dosage and site of BoNT-A injection, and used a visual analogue scale (VAS) for pain and the degree of satisfaction. The data were analyzed using t-tests and a Friedman repeated measures analysis of variance on ranks. Results: Significant decreases in the VAS for pain were found in both the chronic migraine and non-migraine CH groups, from 2, 4 and 12 weeks and from 4 and 12 weeks, respectively, after BoNT-A administration (P < 0.05). The chronic migraine group showed significantly lower VAS scores for pain than the non-migraine CH group from 2, 4 and 12 weeks after the BoNT-A administration (P < 0.05). Twenty eight patients (59.2%) in the chronic migraine group and eight (36.4%) in the non-migraine CH were satisfied with the BoNT-A treatment. Conclusions: This clinical study revealed that the use of BoNT-A demonstrated efficacy for CH patients resistant to drug therapy or nerve block. Moreover, BoNT-A proved itself more effective in the chronic migraine than non-migraine CH group.

Mediating effect of negative perceived stress on the relationship between premenstrual syndrome and emotional eating

  • Yesol Um;Jisun Lee
    • Nutrition Research and Practice
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    • 제17권2호
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    • pp.330-340
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    • 2023
  • BACKGROUND/OBJECTIVES: Emotional eating is one of the eating behaviors in which negative emotions affect eating. During the luteal phase, premenstrual syndrome (PMS) and its associated psychological and physical symptoms can appear in some women, and a few of them suffer from premenstrual dysphoric disorder (PMDD), a severe form of PMS. Some women diagnosed with PMS/PMDD experience emotional eating during the luteal phase, which may be a coping mechanism for psychological stress. This study aimed to investigate how PMS/PMDD and negatively perceived stress are related to emotional eating. SUBJECTS/METHODS: A total of 409 women aged 20 to 39 yrs with a body mass index (BMI) ranging from 18.5 to 29.9 kg/m2 participated in this study. Participants who responded to all the questions of the Shortened Premenstrual Assessment Form, Negative Perceived Stress Scale, and Emotional Eater Questionnaire were divided into a PMDD and a non-PMDD group according to the cut-off value for PMDD diagnosis. Independent t-tests and mediation analyses were performed to compare the 2 groups. RESULTS: No significant differences between the 2 groups were found in terms of BMI; however, the average values for emotional eating, PMS, and negative perceived stress of the PMDD group were significantly higher than those of the non-PMDD group. Only negative perceived stress had a significant effect on emotional eating in the non-PMDD group. In the PMDD group, PMS was statistically significant for both negative perceived stress and emotional eating mediated by negative perceived stress. Consequently, it appeared to have a partial or complete mediation depending on the independent variable for the PMDD group. CONCLUSIONS: This study highlights the importance of managing negative perceived stress to control emotional eating in PMS/PMDD for improved women's health.

Effects of Korean red ginseng on T-cell repopulation after autologous hematopoietic stem cell transplantation in childhood cancer patients

  • Kyung Taek Hong;Yeon Jun Kang;Jung Yoon Choi;Young Ju Yun;Il-Moo Chang;Hee Young Shin;Hyoung Jin Kang;Won-Woo Lee
    • Journal of Ginseng Research
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    • 제48권1호
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    • pp.68-76
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    • 2024
  • Background: Although the survival outcomes of childhood cancer patients have improved, childhood cancer survivors suffer from various degrees of immune dysfunction or delayed immune reconstitution. This study aimed to investigate the effect of Korean Red Ginseng (KRG) on T cell recovery in childhood cancer patients who underwent autologous hematopoietic stem cell transplantation (ASCT) from the perspective of inflammatory and senescent phenotypes. Methods: This was a single-arm exploratory trial. The KRG group (n = 15) received KRG powder from month 1 to month 12 post-ASCT. We compared the results of the KRG group with those of the control group (n = 23). The proportions of T cell populations, senescent phenotypes, and cytokine production profiles were analyzed at 1, 3, 6, and 12 months post-ASCT using peripheral blood samples. Results: All patients in the KRG group completed the treatment without any safety issues and showed a comparable T cell repopulation pattern to that in the control group. In particular, KRG administration influenced the repopulation of CD4+ T cells via T cell expansion and differentiation into effector memory cell re-expressing CD45RA (EMRA) cells. Although the KRG group showed an increase in the number of CD4+ EMRA cells, the expression of senescent and exhausted markers in these cells decreased, and the capacity for senescence-related cytokine production in the senescent CD28- subset was ameliorated. Conclusions: These findings suggest that KRG promotes the repopulation of CD4+ EMRA T cells and regulates phenotypical and functional senescent changes after ASCT in pediatric patients with cancer.

부산지역 학령기 중도입국청소년의 문화적응과 지원방안 탐색 (An Exploratory Study on Acculturation of School-aged Immigrant Adolescents and Policy Support in Busan)

  • 조형숙
    • 한국산학기술학회논문지
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    • 제19권4호
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    • pp.412-422
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    • 2018
  • 다문화가족정책이 결혼이민자의 초기정착 지원에서 다문화가족자녀의 성장지원으로 확대되고 있다. 한국에서 태어난 국제결혼가정의 국내출생자녀에 비해 외국성장 배경을 가진 중도입국청소년은 언어와 문화적 차이로 인한 어려움을 많이 겪는다. 이에 본 연구는 부산지역 학령기 중도입국청소년이 한국 사회 적응 시 겪는 어려움을 조사하고 문화적응을 위한 지원방안을 탐색하고자 한다. 중도입국청소년, 이민자 학부모, 학교 내 실무자 및 학교 밖 실무자를 포함하여 총 17명의 연구 참여자를 대상으로 초점집단면접을 실시하여 학령기 중도입국청소년이 겪는 적응의 어려움과 지원방안을 도출하였다. 학령기 중도입국청소년은 문화 인종적 차이, 이름의 차이, 언어적 차이 및 나이 차이로 인한 어려움을 겪었으며, 적응을 위해 한국어 교육, 교과 멘토링, 진로지도 및 학교 내 다문화이해교육에 대한 요구가 높았다. 이주민 및 외국인주민에 대한 결핍 모형에 근거한 문화적 동화주의적 접근법에서 벗어날 필요가 있으며, 다양성 모형에 근거하여 중도입국 청소년의 문화적응 지원방안을 검토할 필요가 있음을 역설하였다.

병원종사자의 직업성 스트레스에 관한 연구 - 서울시내 500병상 이상 병원종사자를 중심으로 - (Occupational Stress of Hospital Workers)

  • 이우천
    • 한국병원경영학회지
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    • 제3권1호
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    • pp.1-33
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    • 1998
  • The purpose of this thesis is to study theoretical access to the methods that have been used for the research of occupational stress, thereby providing management methods of occupational stress of hospital workers. With a stress model of hospital workers set up from the viewpoint of organization management, 929 sets of questionnaires were collected from intern doctors, resident doctors, nurses, nursing aides, pharmacists, medical technicians, workers in patient affairs(reception and medical insurance workers), administrators and clerks from the 8 hospitals in Seoul with more than 500 beds. Upon variance analysis, correlation analysis and regression analysis of the collected questionnaires, this work examined how differences in stress caused by specific occupations and formulated a method of stress management for the hospital workers. The results are as follows. 1) If some duties of the nurses suffering from role-overloaded stress are transferred to the nursing aides dissatisfied with insufficient role, the two grunting groups can be satisfied at the same time. It is also necessary to transfer some jobs of the overloaded workers in patient affairs to the administrators, or the other way around. To reduce stress of conflict and ambiguity of role caused by the obscure division of roles between the workers, the role of each occupation should be delineated and the clear division of roles should be translated into action strictly according to that delineated. 2) Stress of inefficiency of organization from which the student doctors suffer can be relieved by management of participation. If they have access to the process of decision-making in general hospital affairs and consequently their understanding and the autonomy of job performance are promoted, such stress will be reduced. 3) To cope with stress of career development from which nurses, medical technicians, administrators, workers in patient affairs suffer, it is necessary to establish whether they have a chance to revive their careers, whether there are any ways of remotivation for less contributive workers, and whether they encourage each other to develope their careers. If they are given a chance to develope their careers, such stress will be relieved. 4) Pharmacists, suffering from stresses of living and personal relations, have strong cohesive power among themselves and organize a well-integrated team; thereby reducing the stress of personal relations and increasing productivity. 5) For administrators and student doctors confined to lesser social supports and for nurses and workers in patient affairs whose recognition of stress and job satisfaction are affected by social supports, emotional and informational supports for job performance help alleviate an individual's mental, and physical stress. 6) In addition to the above-mentioned stress-management methods, if an organizational coping strategy is provided according to the types of stress from the general viewpoint of the whole group of hospital workers, it would be of great help to managing stress. For example, the redesign of jobs, the management of objective, the improvement of working environment, the formation of an autonomous working group and various working plans can be set up for those who suffer from stress related to inappropriate role, while career counseling and development of career process can be provided for those dissatisfied with career development. Participation in the process of decision-making and the restructuring of the organization are needed for those who suffer from stress of malfunctioning organization, whereas creation of a supportive organizational atmosphere is desired for those who feel stressed due to personal relations. As well, such organizational coping strategies. as the increase of welfare facilities, seminars and educational programs and provision of health-promotion facilities can be provided.

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디지털 적외선 체열 검사를 사용한 하치조 신경 손상의 평가 (ASSESSMENT OF INFERIOR ALVEOLAR NERVE DAMAGE USING DIGITAL INFRARED THERMOGRAPHIC IMAGING)

  • 이지연;이재훈;김철환
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • 제30권6호
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    • pp.488-496
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    • 2004
  • Oral & Maxillofacial surgery can lead to complications that result in abnormal sensation or movement. Inferior alveolar nerve(IAN) injury can result in dysesthesia, paresthsia of the lower lip and chin, so patients presenting with IAN damage suffer from sensory loss. But diagnosis of the nerve injury is largely limited to the subjective statements made by the patient. Distribution of sympathetic nerves parallels the distribution of the somatosensory nerves. Loss of sensory tone causes a concomitant loss of sympathetic activity, resulting in vasodilation of the cutaneous blood vessels that demonstrates greater heat loss. Digital infrared thermographic imaging(DITI) detects infra-red radiation given off by body. DITI can detect minute difference in temperature from different parts of the body and translates the amount of heat into quantitative data. The area of different temperature correlated with pain or disease can be visualized by corresponding color. The objective of this study was to determine the efficacy of DITI in objectively assessing IAN injury. The 19 normal subjects and the 14 patients underwent DITI scan. The normal subjects received unilateral IAN block anesthesia with 2 ml of 2% lidocaine (IAN bolck group) to evaluate temporary alteration in nerve function. Patient group were patients with unilateral IAN damage (dysesthesia or paresthesia) after surgical treatment(Mn. 3rd molar Extraction, etc.). The surgical procedure performed within 6 months of test. The results were as follows. 1. No significant differences in temperature were found between left and right sides of the lower lip and chin in the control group. 2. Significant temperature differences were found between the anesthetized and non-anesthetized sides of the lower lip and chin in the IAN block group. 3. Significant temperature differences were found between the involved and uninvolved sides of the lower lip and chin areas of the experimental group. The results of the study show that DITI can be an useful and effective means of objectively assessing and visualizing IAN damage.

중학생의 외톨이 성향과 학업소진의 잠재 프로파일 분류: 성별, 자아탄력성, 학교적응 차이 분석 (Differences in Latent Profile Analyses of Middle School Students' Loner Tendencies and Academic Burnout According to Gender, Ego-resilience, and School Adaptation)

  • 남숙경;최현주
    • 한국심리학회지:학교
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    • 제18권1호
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    • pp.99-119
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    • 2021
  • 본 연구는 중학생의 외톨이 성향과 학업소진으로 구성되는 잠재프로파일을 규명하고 이러한 프로파일에 따라 성별, 자아탄력성(자아탄력 및 자아취약), 학교적응에 차이가 있는지 검증하고자 하였다. 이를 위해 경남 지역 중학생 3학년 270명의 자료를 분석하였다. 주요 연구결과는 다음과 같다. 첫째, 외톨이 성향과 학업소진의 잠재프로파일은 4개의 집단이 적절한 것으로 나타났다. 이들은 외톨이 성향과 학업소진이 모두 낮은 '적응 집단', 외톨이 성향은 낮으나 학업소진은 높은 '소진 집단', 외톨이 성향은 높으나 학업소진은 낮은 '외톨이 집단', 외톨이 성향과 학업소진이 모두 높은 '외톨이-소진 집단'으로 구분되었다. 4개 집단에 대해 교차 분석과 일원분산분석을 실시한 결과, 외톨이-소진 집단은 다른 집단에 비해 통계적으로 낮은 자아탄력, 높은 자아취약, 낮은 학교적응 수준을 지니는 것으로 나타났다. 이상의 연구결과를 토대로 중학생 상담에 대한 시사점이 논의되었고, 후속연구를 위한 제언이 이루어졌다.