Cryptanalysis of a certificateless aggregate signature scheme

Recently, Nie et al. proposed a certificateless aggregate signature scheme. In the standard security model considered in certificateless cryptography, we are dealing with two types of adversaries. In this paper, we show that Nie et al.\u27s scheme is insecure against the adversary of the first type. In other words, although they claimed that their proposed scheme is existentially unforgeable against adaptive chosen message attack considering the adversaries in certificateless settings, we prove that such a forgery can be done

Reducing Multi-Secret Sharing Problem to Sharing a Single Secret Based on Cellular Automata

The aim of a secret sharing scheme is to share a secret among a group of participants in such a way that while authorized subsets of participants are able to recover the secret, non-authorized subsets of them obtain no information about it. Multi-secret sharing is the natural generalization of secret sharing for situations in which the simultaneous protection of more than one secret is required. However, there exist some secret sharing schemes for which there are no secure or efficient multi-secret sharing counterparts. In this paper, using cellular automata, an efficient general method is proposed to reduce the problem of sharing k secrets (all assigned with the same access structure and needed to be reconstructed at once) under a certain secret sharing scheme (S), to the problem of sharing one secret under S such that none of the properties of S are violated. Using the proposed approach, any secret sharing scheme can be converted to a multi-secret sharing scheme. We provide examples to show the applicability of the proposed approach

An Educational Intervention on Based Information, Motivation and Behavior Skills Model and Predicting Breast Self-examination

Introduction: Breast self-examination recommend as a breast screening method in developing countries where there are limited access to other screening methods. Therefore promoting breast self-examination required to identify effective interventions and relevant factors.Methods: This study was a quasi-experimental design which carried out on 314 women 20-69 years. Sampling was conducted from April to 10 August, 2016. A structured questionnaire was used for data collection in before and after the educational intervention. Then participants were followed by phone call after one month for breast self-examination performance.We used descriptive statistical analysis (mean, standard division, frequency distribution), and also other statistical methods (Paired t-test, Pearson’s correlation and logistic regression).The data were analyzed using SPSS version 18 with considering a significant level less than 0.05.Results: There was significant difference between mean scores of information, motivation and behavior skill before and after intervention (P<0/001). After one month following 205 of women (72.2%) reported to perform breast self-examination. Pearson’s correlation showed that breast self-examination significantly correlated with information (r=.305, p=.000), motivation (r=.128, p=.031) and behavior skills (r=.161, p=.006). Also the logistic regression results demonstrated that information (p<.001, OR=1.071), motivation (p=.045, OR=.978) and behavior skills (p=.001, OR=1.033) predicted breast self- examination.Conclusions: Considering the results of this study, it appears that the use of educational interventions based on three constructs of information, motivation and behavior skills can be used to promote breast self-examination. Moreover these results can apply to improve breast self-examination among women by health care providers

4-Chloro-3,5-dioxaphosphacyclohepta[2,1-;3,4-']dinaphthalene (BINOL- PCl) as a Bulky and Efficient Reagent for the Transformation of Symmetric and Asymmetric Benzoins to Corresponding Benziles

Abstract 4-Chloro-3,5-dioxaphosphacyclohepta[2,1-;3,4-']dinaphthalene (BINOL-PCl) was found to be an efficient, bulky and selective reagent for the transformation of symmetric and asymmetric benzoins to the corresponding benziles at 0 °C to room temperature under nitrogen atmosphere in good yield

The Effect of Guided Imagery and Music on the Level of Sexual Satisfaction of Women of Reproductive Age: A parallel cluster- Randomized Trial

Background & aim: As one of the most influential factors of marital life, sexual satisfaction can significantly lead to peace and compatibility of couples. The present study investigated the effect of Guided Imagery and Music (GIM) on the level of sexual satisfaction in women of reproductive age.Methods: In this parallel cluster-randomized trial which was conducted from Feb. 2019 to Apr. 2020, 72 women of reproductive age (two groups of 36 subjects) who had moderate or undesirable sexual satisfaction were sampled. The guided imagery music was presented for the intervention group for 6 weeks as twice a week. No intervention was performed for the control group.  The data collection tool included fertility characteristics and Larson questionnaires, which was completed before, immediately and one month after the intervention. Data were analyzed by SPSS software (version 20) using independent t-test, chi-square, Mann-Whitney and variance analysis with repeated measurements.Results:  There was no statistically significant difference between the two groups in the sexual satisfaction score before the intervention. The mean sexual satisfaction score in the intervention group had a statistically significant difference between the baseline (91.1±9.1), immediately after intervention (112±4.46) and one month later (102±9.24) (P< 0.001). However, there was no significant difference between the changes in the sexual satisfaction of women in the control group between three times.Conclusion: GIM technique improves women's sexual satisfaction. It is recommended to health care providers to use this behavioral technique to enhance the level of sexual satisfaction in women of reproductive age

Investigating the relationship between religious orientation and spiritual intelligence with general health dimensions in women with breast cancer

BACKGROUND: Breast cancer is the most common type of cancer and the second leading cause of death among women. Religion and spiritual behaviors are effective strategies for maintaining human health. The aim of this study was to determine the relationship between religious orientation and spiritual intelligence with general health dimensions in women with breast cancer. MATERIALS AND METHODS: The present study is a correlational study that was performed on 50 women with breast cancer referred to medical centers affiliated to Isfahan University of Medical Sciences in 2020. Data were collected through questionnaires of religious orientation, spiritual intelligence, and general health. Data were analyzed by Spearman and regression tests. RESULTS: The results showed that religious orientation had a significant positive relationship with the overall score of general health, but the components of religious orientation had a significant negative relationship with the number of components of public health (p < 0.05). Spiritual intelligence also had a significant positive relationship with general health. However, the number of components of spiritual intelligence has a significant negative relationship with the number of components of general health (p < 0.05). CONCLUSION: Considering the relationship between religious orientation and spiritual intelligence with public health and considering educational programs based on spiritual intelligence and religious orientation in this group of people can be an important step in promoting their general health

Supportive needs of women who have experienced pregnancy termination due to fetal abnormalities: a qualitative study from the perspective of women, men and healthcare providers in Iran

Abstract Background Extensive application of screening tests for early diagnosis of fetal abnormalities would justify support for women who are facing pregnancy termination due to fetal abnormalities. Considering the lack of available information regarding supportive sources for these people, the present study was conducted to determine the supportive needs of women who have experienced pregnancy termination due to fetal abnormalities. Methods The present research was a qualitative study. The participants were selected using a purposeful sampling method with maximum variation. Data were collected through in-depth personal interviews and taking of field notes and were analyzed simultaneously using conventional content analysis. Results The main categories that appeared in the present study included “support from the husband” with sub-categories of “mental support and necessary accompaniments”, “participating in planning for future pregnancy” and “financial support to pay the costs of diagnosis and follow-up”, “support from the family and friends” with sub-categories of “helping in taking care of other children”, “help in performing daily activities” and “empathy, companionship and necessary support to maintain mental peace” and finally “support from peers” with sub-categories of “communicating with the peers and receiving information from them” and “creating a sense of confidence and hopefulness”. Conclusions Results of the present study, by determining and highlighting the supportive needs of women who have experienced pregnancy termination due to fetal abnormalities, could be an appropriate basis for providing effective strategies to improve constant participation of the husbands, family members and the peers along with other professional care

Socioeconomic and reproductive determinants of waist-hip ratio index in menopausal women

Background: Health evaluation is carried out using various anthropometric methods including waist–hip ratio (WHR) index. This method is applied for estimating body fat distribution. This study was aimed to investigate the socioeconomic and reproductive determinants of WHR index in menopausal women. Materials and Methods: For this cross-sectional study, samples were 278 menopausal women in Isfahan, Iran, who were selected by stratified sampling and invited to ten health centers. The data collection tools were a questionnaire and the standard meter tape. Data were analyzed using descriptive and inferential statistical tests. Results: The mean of WHR index was X̄ = 0.9 ± 7.54. There was a significantly statistical relation between age, job, educational status, number of pregnancies and deliveries, age of the first delivery, and WHR index. Conclusion: Based on the results, body fat distribution of menopausal women is of android (central) type. It is suggested that measuring WHR index should be done in menopausal women and also during the postpartum period in specific intervals. Furthermore, women should be familiarized with related factors to this index, and it is recommended to avoid pregnancy and delivery at early ages and repeated pregnancies

A review of the therapeutic effects of frankincense

Today, medicinal herbs have been widely used due to antimicrobial, antioxidant properties and less harmful than of chemical compounds. Since ancient times, the medical system in different countries such as Africa, China, India and the Middle East countries, frankincense has been used as antiinflammatory, anti-arthritic, analgesic and anti-proliferation in the treatment of related diseases, chronic diseases of the bowel, asthma, brain edema and other diseases. Several clinical studies that have shown their biological activity the mechanism of action of this plant, have confirmed their anti-inflammatory and anti-tumor activities. Boswellic acids, are the main active component of frankincense and responsible for its therapeutic effects. This review was studied the therapeutic effects of frankincense using the keywords frankincense, boswellic acid, anti-inflammation, intestinal diseases, cancer, diabetes, asthma, brain tumor, fertility and memory. Frankincense with anti-inflammatory, anti-arthritis, anti-proliferative, antimicrobial and analgesic effects at the least side effects and recommended dose could reduce the symptoms of many diseases in traditional and modern medicine