A slot-loaded reduced-size CPW-fed aperture antenna for UWB applications

The paper presents a co-planar wave guide (CPW)-fed slot loaded low return loss planar printed antenna with a small size designed for wireless communication and UWB applications. First, a conventional UWB antenna is modeled to provide a reference point for the modeling and then the shape is modified by a self inverted configuration to achieve higher bandwidth and size reduction. To improve the gain and efficiency, a combination of corner features and loading slots are introduced. The primary aim throughout the modeling was to achieve the minimum possible value of return loss (S11) below -10 dB over the FCC-defined UWB frequency range. The antenna was designed, simulated and modified using Agilent's Advanced Design System (ADS). It was fabricated on FR4 substrate and measured return loss results are presented

Transfer Learning for Inverse Design of Tunable Graphene-Based Metasurfaces

This paper outlines a new approach to designing tunable electromagnetic (EM) graphene-based metasurfaces using convolutional neural networks (CNNs). EM metasurfaces have previously been used to manipulate EM waves by adjusting the local phase of subwavelength elements within the wavelength scale, resulting in a variety of intriguing devices. However, the majority of these devices have only been capable of performing a single function, making it difficult to achieve multiple functionalities in a single design. Graphene, as an active material, offers unique properties, such as tunability, making it an excellent candidate for achieving tunable metasurfaces. The proposed procedure involves using two CNNs to design the passive structure of the graphene metasurfaces and predict the chemical potentials required for tunable responses. The CNNs are trained using transfer learning, which significantly reduced the time required to collect the training dataset. The proposed inverse design methodology demonstrates excellent performance in designing reconfigurable EM metasurfaces, which can be tuned to produce multiple functions, making it highly valuable for various applications. The results indicate that the proposed approach is efficient and accurate and provides a promising method for designing reconfigurable intelligent surfaces for future wireless communication systems

The Evaluation of Relationship between Oral Contraceptive Usages with Psychiatry Symptoms of Premenstrual Syndrome

Background: Premenstrual syndrome (PMS) refers to a set of physical, psychological or behavioral symptoms occurring in ovulation cycles, which in some ways disturbs a person's activities. The aim of study was to investigate the relationship between previous use of contraceptive pills and psychological symptoms of PMS.  Methods: This cross-sectional study was conducted among all female students of Shahroud University of Medical Sciences. Samples were selected by simple census and were provided a standard questionnaire for measuring the PMS. Significant level was set at 0.05.  Results: 65.5% of the participants had some degree of PMS. The use of OCP significantly reduced some PMS related symptoms such as depression (Pvalue=0.039), sadness (Pvalue=0.012), sobering up (Pvalue=0.003) and anger (Pvalue=0.032).  Conclusions: The results of this study showed the use of OCP can clearly and significantly reduce some of the symptoms associated with PMS, such as depression, sadness and sobering up, and anger.  Key words: PMS, OCP, Psychiatry Symptoms. &nbsp

Evaluation of Relationship between Oral Contraceptive Usages with Psychiatry Symptoms of Premenstrual Syndrome

Background: Premenstrual syndrome (PMS) refers to a set of physical, psychological or behavioral symptoms occurring in ovulation cycles, which in some ways disturbs a person's activities. The aim of study was to investigate the relationship between previous use of contraceptive pills and psychological symptoms of PMS.  Methods: This cross-sectional study was conducted among all female students of Shahroud University of Medical Sciences. Samples were selected by simple census and were provided a standard questionnaire for measuring the PMS. Significant level was set at 0.05.  Results: 65.5% of the participants had some degree of PMS. The use of OCP significantly reduced some PMS related symptoms such as depression (Pvalue=0.039), sadness (Pvalue=0.012), sobering up (Pvalue=0.003) and anger (Pvalue=0.032).  Conclusions: The results of this study showed the use of OCP can clearly and significantly reduce some of the symptoms associated with PMS, such as depression, sadness and sobering up, and anger.  Key words: PMS, OCP, Psychiatry Symptoms. &nbsp

May Measurement Month 2018: a pragmatic global screening campaign to raise awareness of blood pressure by the International Society of Hypertension

Aims Raised blood pressure (BP) is the biggest contributor to mortality and disease burden worldwide and fewer than half of those with hypertension are aware of it. May Measurement Month (MMM) is a global campaign set up in 2017, to raise awareness of high BP and as a pragmatic solution to a lack of formal screening worldwide. The 2018 campaign was expanded, aiming to include more participants and countries. Methods and results Eighty-nine countries participated in MMM 2018. Volunteers (≥18 years) were recruited through opportunistic sampling at a variety of screening sites. Each participant had three BP measurements and completed a questionnaire on demographic, lifestyle, and environmental factors. Hypertension was defined as a systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg, or taking antihypertensive medication. In total, 74.9% of screenees provided three BP readings. Multiple imputation using chained equations was used to impute missing readings. 1 504 963 individuals (mean age 45.3 years; 52.4% female) were screened. After multiple imputation, 502 079 (33.4%) individuals had hypertension, of whom 59.5% were aware of their diagnosis and 55.3% were taking antihypertensive medication. Of those on medication, 60.0% were controlled and of all hypertensives, 33.2% were controlled. We detected 224 285 individuals with untreated hypertension and 111 214 individuals with inadequately treated (systolic BP ≥ 140 mmHg or diastolic BP ≥ 90 mmHg) hypertension. Conclusion May Measurement Month expanded significantly compared with 2017, including more participants in more countries. The campaign identified over 335 000 adults with untreated or inadequately treated hypertension. In the absence of systematic screening programmes, MMM was effective at raising awareness at least among these individuals at risk

Physical Layer Security in Cognitive Radio Networks: Detection and Mitigation of Primary User Emulation Attacks

Cognitive Radio Networks (CR) is an advanced growing technique and a promising technology for the upcoming generation of the wireless networks in order to efficiently utilize the limited spectrum resources and satisfy the rapidly increasing demand for wireless applications and services. Deployment of such networks is hindered by the vulnerabilities that these networks are exposed to, in this paper we focus on security problems arising from Primary User Emulation Attacks (PUEA) in CR networks. We present a comprehensive introduction to primary user emulation attacks, from the attacking rationale and its impact on CR networks, to detection and defense approaches. We have setup the system model using Matlab software, we have used the Neyman-Pearson composite hypothesis test NPCHT to obtain the hypothesis test and detect the PUEA. In order to secure CR networks against PUE attacks, we considered the power received at the secondary receiver. Simulation results proved that using the NPCHT it is possible to keep the probability of success of PUEA low depends on the threshold value. The number of malicious users in the system can significantly increase the probability of false alarm in the network, Also it shows that there is a range of network radii in which PUEA are most successful

اثر ثبت در مالکیت املاک از منظر نظام‌های حقوقی ایران و انگلستان با نگرشی بر اخلاق عمومی و بهداشت قضایی

Background and Aim: Clarifying the effect of registration on Estate ownership based on current necessities and legal capacities, in addition to a theoretical approach, has special importance in guiding policymakers and preparing legal and executive mechanisms. In this study, taking into account the role of estate registration and the importance of its effect in realizing or proving ownership, especially from the perspective of providing the components of public ethics and judicial health, the approach of the two legal systems of Iran and England was investigated. Methods: The current research has been carried out by descriptive-analytical method and using library (documentary) resources. Ethical Considerations: In writing this article, the principles of ethics in research, especially trustworthiness in citing texts and preserving the originality of the article, have been considered. Results: Estates registration can provide the goals of registration laws in the fields of security, justice and judicial health if it has a creative effect (ascertaining) in the realization of ownership. This is clearly foreseen in English law and can be deduced from the registration regulations in Iranian law. Conclusion: In English law, while using the effective and transparent method of electronic registration along with the adoption of a hybrid creation system, property registration and the inclusion of names of persons will lead to the transfer of ownership rights of estate and the possibility of legal possessions in the property. In Iranian law, various interpretations of registration regulations and reference to other laws have caused various theories and approaches, but considering the aims of the registration legislator and the necessities of property registration in the fields of public ethics and judicial health, there should be a causing effect for registration and registration procedures of estates. Please cite this article as: Zolfaghari M, Kazemi M, Badini H, Seifi Zinab GH-A. The Effect of Registration in Relation to Estate Ownership from the Perspective of Iranian and British Legal Systems with a View to Public Ethics and Judicial Health. Akhlaq-i zisti, i.e., Bioethics Journal. 2022; 12(37): e24.زمینه و هدف: تبیین اثر ثبت در مالکیت املاک با تکیه بر ضرورت‌های فعلی و ظرفیت‌های قانونی، علاوه بر رهیافت نظری از اهمیت ویژه‌ای در جهت‌دهی به سیاستگذاران و تمهید سازوکارهای حقوقی و اجرایی برخوردار است. در این مطالعه با در نظرگرفتن نقش ثبت املاک و اهمیت تأثیر آن در ثبوت یا اثبات مالکیت به ویژه از منظر تحقق مؤلفه‌های اخلاق عمومی و بهداشت قضایی، به مطالعه پیرامون رویکرد دو نظام حقوقی ایران و انگلستان پرداخته شد. روش: پژوهش حاضر به روش توصیفی ـ تحلیلی و با بهره‌گیری از منابع کتابخانه‌ای (اسنادی) انجام یافته است. ملاحظات اخلاقی: در نگارش این مقاله، اصول راجع به اخلاق در پژوهش به ویژه امانتداری در استناد به متون و حفظ اصالت مقاله، مورد توجه بوده است. یافته‌ها: ثبت املاک در صورتی می‌تواند اهداف قوانین ثبتی را در حوزه‌های امنیت و عدالت و بهداشت قضایی فراهم آورد که حائز اثر ایجادی (ثبوتی) در تحقق مالکیت باشد. این امر در حقوق انگلستان به صراحت پیش‌بینی شده و در حقوق ایران نیز از مقررات ثبتی قابل برداشت است. نتیجه‌گیری: در حقوق انگلستان، ضمن بهره‌گیری از روش مؤثر و شفاف ثبت الکترونیک در کنار پذیرش نظام ایجادی ترکیبی، ثبت ملک و درج نام اشخاص منجر به تعلق و انتقال حقوق مالکانه و امکان تصرفات حقوقی در ملک خواهد شد. در حقوق ایران تفاسیر ناهمگون از مقررات ثبتی و استناد به دیگر قوانین، نظریات و رویکردهای مختلفی را موجب شده است، لیکن با عنایت به اهداف قانونگذار ثبتی و ضرورت‌های ثبت املاک در حوزه‌های اخلاق عمومی و بهداشت قضایی، می‌بایستی اثری ایجادی برای تشریفات ثبتی و ثبت در دفتر املاک قائل شد

Security aspects in cognitive radio networks detection and mitigation of primary user emulation attacks

Cognitive Radio Networks (CR) is an advanced growing technique and a promising technology for the upcoming generation of the wireless networks. Deployment of such networks is hindered by the vulnerabilities that these networks are exposed to, in this paper we focus on security problems arising from Primary User Emulation Attacks (PUEA) in CR networks. We study the impact of this attack on CR networks, detection and defense approaches. We have setup the system model using Matlab software; the Neyman-Pearson composite hypothesis test NPCHT is used to obtain the hypothesis test and detect the PUEA. Simulation results proved that using NPCHT it is possible to keep the probability of successful PUEA low, and this depends on the threshold values; the number of malicious users in the system can significantly increase the probability of false alarm in the network, Also it shows that there is a range of network radii in which PUEA are most successful

Aspects of quality of life affected in morbidly obese patients who decided to undergo bariatric surgery: A qualitative study to design a native questionnaire

Background: Obesity is a known prevalent major health issue. The aim of this study is to assay Iranian patients' problems with obesity and their expectations of bariatric surgery. Materials and Methods: In this study, we included patients who have used different medical noninvasive treatments and were unsuccessful in losing weight from the obesity clinic in Al Zahra Hospital, Isfahan, from 2014 to 2015. Morbidly obese patients were interviewed using some open-ended questions, and then, directional content analysis of data was done. Results: Analysis of data showed five main categories including (1) physical health, (2) psychological health, (3) social relationships, (4) environment, and (5) “about the causes of obesity” with some subcategories for each category. Conclusion: This study is the first step of designing a quality of life questionnaire while we focused on spiritual and cultural states of Iranian people

Preventive Effect of Phenytoin Compared to Levatiracetam on Incidence of Seizure in Children with Shunted Hydrocephalus

Background and purpose: Seizure in children with hydrocephalus is a common neurosurgical problem that may occur after shunting. This study aimed at comparing the preventive effect of phenytoin and levetiracetam in children with shunted hydrocephalus in a referral hospital. Materials and methods: All patients younger than 15 years of age who underwent ventriculoperitoneal (VP) shunt surgery for hydrocephalus (2016-2020) were included in this retrospective cohort study. The study was carried out in Nemazi Hospital, a referral center for pediatric neurosurgery in southwest Iran. Results: Seventy four patients received phenytoin and 47 received levetiracetam. There were no significant differences in patients’ mean age and sex (P= 0.753 and P= 0.851, respectively). In post-operation follow-up, 13 patients in the levetiracetam group and 10 patients in the phenytoin group developed seizure that showed a weakly significant difference between the two groups (P=0.046). Conclusion: According to this study, phenytoin had a better preventive effect on post-shunting seizures. In addition, due to known pharmacokinetics and pharmacodynamics of phenytoin, this antiepileptic drug may be a reasonable choice for seizure prophylaxis in first days after shunting in children with hydrocephalus