bluuebunny/crossref_metadata_2025 huggingface dataset:
Tackling Cybercrimes in the 5G Era
Authors: Nkiko Christopher , Achugbue Edwin Iroroeavwo , Okuonghae Omorodion
Published: August 2020

The study examined the readiness and digital skills of the Nigerian Police in tackling cybercrimes in the 5G era. Consequently, four specific research objectives were identified, and three hypotheses were tested in the study. The descriptive correlational research design was adopted for the study and the population comprised all police officers from the rank of Assistant Superintendent of Police (ASP) and above in the Criminal Investigation Department in Edo State (including the Anti-Fraud Unit). The sample for the study was 35 police officers in the state. The instruments for data gathering was self-designed questionnaire, and the data collected were analyzed using both descriptive and inferential statistics. From the data analyzed, it was gathered that significant relationship existed among the readiness, digital skills of the Nigerian Police, and the tackling of cybercrimes in 5G era. The study concluded that the deployment of 5G technology will bring with it a new level of cyber threat, which will truly test the resolve of cyber security in and outside the country.
Impact of E-Services Quality on E-Loyalty in Paltel E-Satisfaction as a Mediating Variable
Authors: Alkhateeb Maan Ali
Published: August 2020

E-loyalty has received great interest from researchers as a key element for customer retention and the growth of firms as well as gaining new customers. This study aims to investigate the impact of the electronic website services quality on e-loyalty in the companies listed within Paltel using electronic satisfaction as a mediating variable. Seven dimensions of e-service quality are examined including content, structure, interaction, presentation, responsiveness, e-security, and reliability. The quantitative research approach is conducted on the returned 393 valid surveys. The findings revealed and emphasized the role played by e-satisfaction as a mediating variable between the independent variable's dimensions and the independent variable.
ARID1a Associates with Lymphoid-Restricted Transcription Factors and Has an Essential Role in T Cell Development
Authors: Astori Audrey , Tingvall-Gustafsson Johanna , Kuruvilla Jacob , Coyaud Etienne , Laurent Estelle M. N. , Sunnerhagen Maria , Åhsberg Josefine , Ungerbäck Jonas , Strid Tobias , Sigvardsson Mikael , Raught Brian , Somasundaram Rajesh
Published: August 2020

Maturation of lymphoid cells is controlled by the action of stage and lineage-restricted transcription factors working in concert with the general transcription and chromatin remodeling machinery to regulate gene expression. To better understand this functional interplay, we used Biotin Identification in human embryonic kidney cells to identify proximity interaction partners for GATA3, TCF7 (TCF1), SPI1, HLF, IKZF1, PAX5, ID1, and ID2. The proximity interaction partners shared among the lineage-restricted transcription factors included ARID1a, a BRG1-associated factor complex component. CUT&RUN analysis revealed that ARID1a shared binding with TCF7 and GATA3 at a substantial number of putative regulatory elements in mouse T cell progenitors. In support of an important function for ARID1a in lymphocyte development, deletion of Arid1a in early lymphoid progenitors in mice resulted in a pronounced developmental arrest in early T cell development with a reduction of CD4+CD8+ cells and a 20-fold reduction in thymic cellularity. Exploring gene expression patterns in DN3 cells from Wt and Arid1a-deficient mice suggested that the developmental block resided in the DN3a to DN3b transition, indicating a deficiency in β-selection. Our work highlights the critical importance of functional interactions between stage and lineage-restricted factors and the basic transcription machinery during lymphocyte differentiation.
Protective Immune Responses Elicited by Deglycosylated Live-Attenuated Simian Immunodeficiency Virus Vaccine Are Associated with IL-15 Effector Functions
Authors: Watanabe Satoru , Fujino Masayuki , Saito Yohei , Ahmed Nursarat , Sato Hirotaka , Sugimoto Chie , Okamura Tomotaka , Hanaki Kenichi , Nakayama Emi E. , Shioda Tatsuo , Matsushima Kouji , Ansari Aftab A. , Villinger Francois , Mori Kazuyasu
Published: August 2020

Deglycosylated, live-attenuated SIV vaccines elicited protective immune responses against heterologous SIVsmE543-3, which differs from the vaccine strain SIVmac239 to levels similar to those across HIV-1 clades. Two thirds of the vaccinees contained the chronic SIVsmE543-3 infection (controllers), whereas one third did not (noncontrollers). In this study, we investigated immune correlates of heterologous challenge control in rhesus macaques of Burmese origin. Because depletion of CD8+ cells in the controllers by administration of anti-CD8α Ab abrogated the control of viral replication, CD8+ cells were required for the protective immune response. However, classical SIV-specific CD8+ T cells did not account for the protective immune response in all controllers. Instead, IL-15–responding CD8α+ cells, including CD8+ T and NK cells, were significantly higher in the controllers than those in the noncontrollers, before and after vaccination with deglycosylated SIV. It is well established that IL-15 signal transduction occurs through “trans-presentation” in which IL-15 complexed with IL-15Rα on monocytes, macrophages, and dendritic cells binds to IL-15 Rβ/γ expressed on CD8+ T and NK cells. Accordingly, levels of IL-15 stimulation were strongly affected by the depletion of monocytes from PBMCs, implying key roles of innate immune cells. These results suggest that intrinsic IL-15 responsiveness may dictate the outcome of protective responses and may lead to optimized formulations of future broadly protective HIV vaccines.
Characterization and burden of severe eosinophilic asthma in New Zealand: Results from the HealthStat Database
Authors: Shantakumar Sumitra , Ho Yu-Fan , Beale Janine , Gribben Barry
Published: August 2020

Background: This retrospective cohort study aimed to characterize epidemiology, medication use and healthcare resource utilization (HCRU) of patients diagnosed with severe eosinophilic asthma (SEA) compared to other patients with asthma in New Zealand.Methods: Adult patients with asthma with no concurrent diagnosis of Chronic Obstructive Lung Disease (COPD) were identified from the HealthStat primary care database and the National Minimum Dataset using asthma diagnosis, hospital codes and prescriptions. Patients with SEA were identified using a 1-year baseline period (2011) and were those with: inhaled corticosteroid prescription above medium dose (including high dose) plus controller medication, ≥2 exacerbations, and eosinophils ≥300 cells/µl (or ≥150 in 6 weeks prior to index date); patients were followed for 1 year (2012).Results: 160/3276 (4.9%) asthmatics with available eosinophil counts met SEA criteria. Patients with SEA were more likely to be Māori, former smokers, have more comorbidities, higher mean BMI and higher neutrophil counts compared with other patients with asthma. In the follow-up period, SEA patients had over 4 times as many exacerbations; incidence of exacerbations of the same frequency were highest in Māori patients.Conclusions: Compared with other patients with asthma, SEA patients had over 1.5 times as many respiratory treatment prescriptions and higher all-cause HCRU and total healthcare costs; asthma-related healthcare costs were 3.6 times greater.
To Design a Network That Delivers Reliable Performance 24 Hours a Day 7 Days a Week for Higher Education in Uganda
Authors: Ajiji Makeri Yakubu
Published: August 2020

It aims at existing defects of traditional VPN (Virtual Private Network) in constructing enterprise network, analyses problems which must be considered in designing secure enterprise network, puts forward solution of DMVPN (Dynamic Multipoint VPN) technique to solve the problems that traditional VPN has not solved by now. At the same time, it expatiates on the implementation mechanism of DMVPN, puts forward a concrete case that to adopts the DMVPN technique constructs secure enterprise network of some universities and business chain organization, and network performance indexes are tested. From the results of the test, the DMVPN network entirely satisfies the actual requirements that an enterprise uses a network. It offers a mode that is a convenient and economical investment to an enterprise for building a secure network.
The Klein bottle group is not strongly verbally closed, though awfully close to being so
Authors: Klyachko Anton A.
Published: August 2020

According to Mazhuga’s theorem, the fundamental group H of anyconnected surface, possibly except for the Klein bottle, is a retract of each finitely generated group containing H as a verbally closed subgroup. We prove that the Klein bottle group is indeed an exception but has a very close property.
PROGRAMAS PREVENTIVOS DE SALUD BUCAL: FLUORACIÓN DEL AGUA POTABLE Y SAL COMÚN
Authors: Zambrano-Pincay María Victoria
Published: August 2020

A nivel mundial se observa un problema latente asociado con la salud bucal de la población, puesto que aproximadamente 2400 millones de personas padecen de caries de dientes permanentes. Tradicionalmente, la fluorización es la estrategia más común para brindar una solución adecuada que permita disminuir las elevadas estadísticas de caries en niños y adultos en todo el mundo. Las vías más comunes para desarrollar dicha estrategia son la fluorización del agua potable y la sal común. Por tanto, en el presente trabajo se analizan estas estrategias como vías para establecer programas preventivos de salud oral. En conclusión, los métodos de fluorización en agua y sal de mesa han demostrado ser efectivos en diferentes naciones, sin embargo, el programa preventivo de salud bucal aplicado sobre el cloruro de sodio representa ventajas significativas en cuanto a la relación costo/beneficio y a la cobertura en la población; más aún en países como Ecuador, en el que según las estadísticas de los organismos pertinentes, se alcanzan bajos niveles de accesibilidad al agua potable.
Palabras clave: Prevención, salud oral, agua potable, cloruro de sodio, fluorización.
Factores de riesgo y manifestaciones clínicas de la hipertensión arterial
Authors: Hidalgo-Parra Erick Antonio
Published: August 2020

La hipertensión arterial es una problemática sanitaria latente en todo el mundo, de modo que esta enfermedad crónica es muy frecuente a escala nacional y se constituye en la primera causa de muerte a nivel mundial, con una prevalencia promedio del 25%. Por lo tanto, el objetivo de este artículo es revisar la literatura científica propuesta en bases de datos de acceso abierto según las variables establecidas para la búsqueda de información. Las variables fueron: hipertensión arterial, factores de riesgo y manifestaciones clínicas. En total se revisaron 24 documentos, incluyendo libros, estadísticas de instituciones de salud, reportes de salud y manuscritos científicos publicados en revistas indexadas en Scopus, ScIELO y Redalyc. Se menciona que el control absoluto de esta enfermedad depende de elementos como el gasto cardíaco y la resistencia periférica total; además, la mayoría de los pacientes que padecen esta patología no presentan signos y síntomas específicos con relación a la hipertensión arterial; comúnmente son identificados en un examen médico rutinario, y se ha evidenciado que este trastorno crónico asintomático genera lesiones en el corazón, riñones, vasos sanguíneos y cerebro.

Palabras clave: tensión arterial, hipertensión, riesgos, evidencias clínicas.
Use of PRF & PRP in ENT Practice- An Observational study
Authors: Dr. Vikrant Dagar  , Dr. Gajanan Mohniraj Kashid  , Dr. Shaziya Pathan  , Dr. Ashok Gaikwad  , Dr. Harsala Palve  , Dr. Amit Gupta
Published: August 2020

Background: Platelet rich plasma (PRP) & Platelet rich fibrin (PRF) plays important role in wound healing.  Those raised my interest to assess the use of PRP  & PRF in ENT to assess its effect on wound healing. PRP Injection used in Reducing Facial scar, Postoperative scar, Intratympanic Injection for sudden sensorineural hearing loss (SNHL). PRF used in Rhinoplasty for smooth nasal dorsum & less postoperative oedema and for mastoid obliteration to reduce post-operative infections and also used to close post-operated skull base defects. Aim:  The purpose of this study to validate enhanced healing effect of PRF & PRP therapy in ENT. Methodology: PRP & PRF were prepared with 10cc venous blood of patient with help of centrifugal machine. PRP Injection given in patients with Facial scar, Sudden SNHL, Postoperative scar. PRF used in Rhinoplasty , mastoid obliteration & Post-operated skull base defect. Patients were assessed by examining the effect of PRP Injection & postoperative result after using PRF. Result:  We have noticed Less postoperative odema, scarring, infection and improvement in SNHL. Conclusion:  Although our findings were short-term in our study, but we found there is a significant improvement in Postoperative oedema, Infection & Scarring
ANALISIS AGRIBISNIS KENTANG (Solanum tuberosum L) Desa: Merek, Kecamatan Merek, Kabupaten Karo, Provinsi Sumatera Utara
Authors: Gultom Lilis S. , Gea Damai Zaro
Published: August 2020

The aim of the research are (1) knowing the internal and external factors which are strengths, weaknesses, opportunities and threats in the development of potato agribusiness.), (2) knowing the alternatives and priorities that can be applied in the development of potato agribusiness, (3) knowing how much cost, revenue, and income of potato farming, (4) knowing Knowing the feasibility of potato farming in the study area.The research area was determined by the purposive sampling of Trademark, Trademark District, Karo District which was conducted in May 2019 - August 2019. The reason for choosing the area was because the majority of the population were cultivating potato plants. The sampling method is done by simple ranom sampling (simple random). The sample in this study were farmers who worked on potato crops throughout the year. The number of samples in this study amounted to 30 samples. The results showed that: There are internal and external factors that become strengths, weaknesses, opportunities, and threats in the development of potato agribusiness in the study area. Based on the results of the QSPM matrix analysis of the eight strategies there is one strategy that needs to be prioritized with a TAS value of 5,893. Costs used by farmers in managing their farms are Rp.17,099,180 per farmer. Revenue per farmer is Rp.59,500,000. The level of income of potato farmers in the study area is relatively high. Where the net income per farmer is Rp.42,400,820, while the R/C value of potato farming is 3.48 per farmer, this shows that the R/C ratio is greater than one so that the potato farming is feasible (economically profitable).
Analisis Faktor – Faktor Yang Mempengaruhi Keputusan Pembelian di Forum Jual Beli Online Studi Pada Mahasiswa STMIK GICI Batam
Authors: Setiawan Joko
Published: August 2020

Ditinjau dari tujuannya, penelitian ini termasuk dalam penelitian dasar karena penelitian ini merupakan penelitian di bidang akademik yang mengarah pada pengembangan teori dan tidak menekankan pada pemecahan masalah. Jika ditinjau dari permasalahannya, penelitian ini termasuk dalam penelitian kausal-komparatif (causal comparative research), karena penelitian ini meneliti pengaruh antara Keputusan Pembelian (Y) dengan Trust (X1) , ease of use (X2) , Information Quality (X3), Website Quality (X4), dan  Product Quality (X5).

 

Kata kunci: Keputusan pembelian, Trust, ease of use, iformation quality, website quality, projrct quality
Penerapan Metode Waterfall Dalam Pengembangan Aplikasi Ecommerce Kuliner
Authors: Amri Andhika
Published: August 2020

Restoran Kuliner Vegetarian yang terletak pada daerah kota Batam. Dulunya, Restoran Kuliner Vegetarian hanya di fungsikan sebagai jual beli kuliner ditempat. Dan sekarang seiring berkembang nya waktu, disana telah ada menjadi tempat favorit bagi masyarakat kota Batam. Pelayanan informasi yang global dapat meningkatkan penjualan. Pelayanan sebagai usaha melayani kebutuhan konsumen yang lebih luas sehingga konsumen bisa membeli makanan vegetarian tanpa harus datang ke restoran. Pegawai pada bagian pemasaran memberikan pelayanan kepada konsumen,sesuai apa yang ingin di ketahui oleh konsumen agar konsumen mengetahui informasi yang berhubungan dengan produk yang akan di beli. Dalam penulisan ini metode yang digunakan adalah Metode Waterfall, Field Research, Library research, laboratory research.
ANALISA DAN PERANCANGAN APLIKASI FUZZY UNTUK MEMPREDIKSI ANGKA PRODUKSI PADA PABRIK COKLAT CHOKATO BERBASIS WEB DENGAN METODE MAMDANI
Authors: Verdian Ihsan
Published: August 2020

Perancangan aplikasi  fuzzy  dengan metode mamdani pada Pabrik Coklat Chokato bertujuan untuk memprediksi produksi barang pada  periode selanjutnya dan  dengan biaya yang minimal, ini dimaksudkan agar nantinya pihak perusahaan dalam aktifitas produksi coklat dapat meminimalkan kesenjangan antara angka produksi dan tingkat penjualan sehingga tercapai suatu kestabilan produksi. Perancangan aplikasi fuzzy untuk memprediksi produksi barang  berbasis web ini dibuat dengan dengan menggunakan PHP dan MYSQL sebagai database. Dengan adanya aplikasi ini diharapkan dapat dipergunakan untuk memprediksi produksi barang  untuk periode selanjutnya yang disajikan dalam sebuah aplikasi berbasis web
RANCANG BANGUN SISTEM INFORMASI PENGGAJIAN KARYAWAN PADA KOPERASI KARYAWAN PT GIKEN PRECISION INDONESIA
Authors: Riki Riki
Published: August 2020

The update technology in business processes is indispensable for the Organization, one of the updates that can be upgraded on the payroll. Cooperative Employees of PT Giken Precision Indonesia requires systems that support the payroll process is good for its employees, payroll system that exists on the Employee Cooperative PT Giken Precision Indonesia is still done manually, that is, do pencantatan employee data to manufacture slip salary, this led to the delay in information and data loss. To overcome these problems, required the existence of a new computerized system to improve work efficiency. The methodology used to design a computerized system: analyzing the running system, designing a new system, making the system, and the last test of the system have been made. The application which resulted in the creation of this program is the application of information system of payroll employees using the programming language Visual Basic 2008 and draft database using MySql Server. After going through the stages in accordance with the selected development methods in the implementation of payroll information system that is continuously and have follow-up testing system which consists of testing where this testing using black box testing methods which focus on the functional requirements for software testing and field testing with IE betha processing data as the value of the accuracy of the results of the selection.
METODE ANALYTICAL HIERARCHY PROCESS (AHP) DALAM PEMILIHAN BUDIDAYA IKAN LAUT (STUDI KASUS PADA BALAI PERIKANAN BUDIDAYA LAUT (BPBL) BATAM)
Authors: Munir Zainul Munir
Published: August 2020

Sistem  Pendukung  Keputusan  (SPK)  atau  dikenal  dengan  Decision  Support    System  (DSS), pada  tahun  1970-an  sebagai  pengganti  istilah  Management    Information  System  (MIS).  Batam  merupakan  pulau  kaya  raya,  dimana  mempunyai  laut  yang  terdapat  ikan  melimpah ruah.  Penelitian  ini bertujuan  merancang  sistem  penunjang  keputusan  untuk  budidaya  ikan  laut  dengan  pendekatan metode  Analytical  Hierarchy  Process  (AHP),  sehingga  dapat  membantu  nelayan  dalam  memilih ikan  yang  mudah  dibudidayakan. Tahapan  penelitian  ini  yaitu  menetapkan  alternatif-alternatif dan  kriteria  dalam  sebuah  sistem  penunjang  keputusan  untuk  budidaya  ikan  laut. Dalam  hal budidaya  ikan  laut,  ada  beberapa  kriteria  dan  alternatif  agar  menjadi  ekonomis  dan menguntungkan,  antara  lain  kriteria  jenis  ikan  dan  alternatif-alternatif  yaitu  PH  air,  Jumlah Pakan,  Suhu,  dan  luas  keramba. Tahapan  yang  dilakukan  yaitu  menghitung  bobot  kriteria  mencari  normalisasi  matrik  setiap  bobot dan  kriteria,  mengecek  konsistensi  dengan  cara  mengitung  konsistensi  setiap  langkah-langkah yang  akan  dilakukan,  maka  kriteria  atau  jenis  ikan  yang  dibudidaya  akan  mendapatkan  nilai bobot  tertinggi,  selanjutnya  akan  dilakukan  perbandingan  setiap  kriteria  dan  alternatif-alternatif, Hasil  yang  didapatkan  adalah  nilai  bobot  dari    masing-masing  alternatif  yang  dirangking  dari tertinggi  sampai  terendah.  Hasil  nilai  alternatif  budidaya  ikan  yang  telah  diberi  rangking  tersebut dapat  digunakan  sebagai  pendukung  keputusan  dalam  menentukan  budidaya  pemilihan  ikan terbaik  di  Balai  Perikanan  Budidaya  Laut  Batam.
SISTEM PENDUKUNG KEPUTUSAN PEMILIHAN SUPPLIER PADA TB.NAMEENE DENGAN METODE SIMPLE ADDITIVE WEIGHTING (SAW)
Authors: Putra Nursaka , Habibie Dedi Rahman , Handayani Ika Fitri
Published: August 2020

Salah satu sistem yang mengolah informasi adalah sistem pendukung keputusan. Sistem penunjang keputusan tersebut dapat mengolah informasi dalam menawarkan alternatif-alternatif untuk mencari solusi yang terbaik. Persoalan pengambilan keputusan pada dasarnya merupakan bentuk pemilihan dari berbagai alternatif tindakan yang mungkin bisa dipilih. Sebelum menentukan alternatif, diperlukan data-data yang akurat untuk mendukung pengambilan keputusan yang tepat. Bila data-data yang dimasukan tidak akurat maka proses perhitungan dapat menyebabkan hasil yang salah sehingga alternatif keputusan yang dihasilkan pun menjadi tidak akurat. Seorang pakar bisa melakukan perhitungan data-data kriteria penentuan supplier yang terbaik, sehingga nantinya dapat menghasilkan pemilihan alternatif keputusan yang dapat membantu pihak TB.Nameene dalam menentukan siapa yang menjadi supplier terbaik untuk TB.Nameene. Seorang pakar dalam menentukan alternatif keputusan membutuhkan waktu yang cukup lama, sehingga dapat mempengaruhi faktor fisikis seorang pakar. Ketika faktor fisikis seorang pakar itu mengalami masalah maka dapat mempengaruhi keakuratan alternatif keputusan yang dihasilkannya. Keputusan sistem pendukung keputusan akan sangat diperlukan untuk menjaga kestabilan hasil akhir dari proses perhitungan untuk pemilihan alternatif keputusan.
CAREGIVING END-OF-LIFE EXPERIENCES AND WELLBEING OF CAREGIVERS OF CARDIAC PATIENTS: MEDIATING ROLE OF CAREGIVING SELF EFFICACY
Authors: Sultan Sarwat , Kanwal Frasat , Kanwal Sumreen
Published: August 2020

Objectives: To investigate the role of caregiving self-efficacy as mediator between the relationship of experiences of caregivers of dying heart patients with caregivers’ wellbeing. Methodology: Participants of this study were 211 caregivers of heart patients at Institute of Cardiology Multan. Caregivers aged 26-57 years provided data on three scales measuring End-of-Life experiences, caregiving wellbeing and caregiving self-efficacy. Results: Mediating effect of caregiving self-efficacy was supported through the path analysis on AMOS-21 between end-of-life care experiences and wellbeing of caregivers. Findings indicated that caregivers confronted high negative experiences and low well-being among caregivers of cardiac patients. Results also showed that caregivers' negative end-of-life care experiences such as physical suffering and burden significantly negatively affect their level of wellbeing; and positive and neutral experiences have positive impression on wellbeing. However, caregiving self-efficacy reported by caregivers mediate the effects of these experiences on their wellbeing. Conclusion: Assumed paths in model between the study variables supported the claim that caregivers’ self-efficacy intervened as mediator between caregiving experiences while giving during terminal period of dying patients and caregiver’s own wellbeing.  Findings suggested that if caregiving self-efficacy is high among caregivers, they may undergo negative experience less and may have high wellbeing during end-of-life care. Keywords: End-of-life care, end-of-life experiences, caregiver’ self-efficacy, well-being, cardiac patients
CONTRACEPTION KNOWLEDGE AND PRACTICES AMONG FEMALES PRESENTED WITH CARDIAC DISEASES AT GULAB DEVI HOSPITAL LAHORE
Authors: Iqbal Usman Javed , Latif Lubna
Published: August 2020

Objective: To assess the knowledge and practices of contraception in females presented with cardiac disease.Methodology: This cross sectional study was conducted at obstetrics and gynaecology department, Gulab Devi Hospital, Lahore. A total of 246 consecutive female subjects referred to gynaecology and obstetrics ward by cardiology department were enrolled. Informed consent was taken and confidentiality was ensured. The cardiac disease of the respondent was noted and a detailed obstetric history, number of previous pregnancies, date of last child born and last menstrual period (LMP) was taken. Knowledge and practices of contraception was gathered through a structured questionnaire. Data were entered and analyzed by SPSS version 20.0. Categorical data were presented in the form of frequencies and percentages & presented through graphs while mean+SD was computed for quantitative data.Results: The mean age of the study participants was 28±6.7 years. Majority of the study participants (48.7%) were from to the age group of 20-30 years. Regarding parity, 60 (24.3%) women had 01 child, 68 (27.6%) had 2 children, 65(26.4%) had 3 children and 53(21.5%) had 4 or more children. Regarding knowledge of contraception 110 (44.7%) females had no knowledge, 80 (32.5%) had partial knowledge and 56 (22.7%) had full knowledge about contraception. Out of 246 females only 92 (37.39%) had ever practiced contraception. Barrier method (Condoms) was the most common method reported by females that ever practiced contraception followed by surgical tubal ligation and intrauterine device.Conclusion: Females with cardiac diseases should be treated by a group of experienced obstetrician, cardiologist, general physician and health care providers; each patient needs individual counselling regarding her family size to attain proper spacing between two children or as a continuous contraceptive method. If possible their cardiac disease should be treated before getting pregnant.Key Words: Contraception, Cardiac Diseases, Reproductive Health, Maternal Health
PROPORTION OF POSITIVE STRESS TEST IN YOUNGER PATIENTS COMING TO TERTIARY CARE HOSPITAL FOR THE EVALUATION OF ISCHAEMIC HEART DISEASE. ARE WE GOING TO LOSE OUR YOUNGER WORKFORCE?
Authors: Farman Muhammad Tariq , Ahmed Siddiqui Nauman Matloob , Bhatti Khalid Iqbal , Khan Muhammad Uzair , Siddiqui Faisal Ahmed , Lashari Muhammad Nawaz , Sial Jawaid Akbar
Published: August 2020

OBJECTIVE: To study the proportion of positive exercise stress test in younger patients coming to tertiary care hospital for the evaluation of ischaemic heart disease (IHD). Our secondary objective was to find out the difference of risk profile between the relatively younger and elderly population having IHD. METHODOLOGY: This descriptive cross sectional study was conducted at cardiology department of a tertiary care centre at Karachi, Pakistan during July 1st 2018 to December 31st 2018 (six months). All adult patients whose exercise tests had been turned positive were selected for the study. Patients with history of arrhythmias, conduction defects, valvular heart diseases, co-morbid conditions like cirrhosis, stroke, osteoarthritis, chronic kidney disease were excluded from the study. The risk factors of interest were hypertension, diabetes Mellitus, smoking, lipid disorders and obesity. RESULTS: Total 85 patients were selected for the study. Out of them, 73 (85.9%) were male and 12 (14.1%) were female. Mean age of our patients was 56.2±8.7 years. Out of 85 patients, 33 (38.8 %) were falling into the category of younger (< 55 years) patients, while elderly (≥ 55years) patients were 52 (61.2%). In comparison to younger population, diabetes mellitus (34.6 vs 15.2 %; P-value = 0.04) and smoking (23.1 vs 6.1%; P-value= 0.03%) were significantly more prevalent in elderly individuals.  Prevalence of Hypertension was slightly higher in younger population (78.8 vs 73.1 %; P-value 0.5) as compare to elderly population. Similarly, younger population were found to be more obese (36.4 vs 28.8 %; P-value 0.4) as compared to elderly population. Prevalence of lipid disorder was almost equal between both the groups (40.4 vs 39.4%; P-value=0.9). CONCLUSION: The burden of Ischaemic heart disease is growing in our younger population and every third of our ischaemic patient is among the younger age group. Although proportion of diabetes and smoking is less common in younger population, trend of hypertension and obesity is on rise. KEY WORDS: Ischaemic Heart Disease, Younger Population, Coronary Risk factors
EVALUATION OF THE RELATION BETWEEN PLATELET COUNT AFTER PRIMARY PCI AND LEFT VENTRICULAR ANEURYSM IN PATIENTS WITH ACUTE ANTERIOR ST ELEVATION MYOCARDIAL INFARCTION
Authors: Gholipour Mahboobe , Mirrazaghi Seyedeh Fatemeh , Moayerifar Mani , Nikfarjam Salman , Salari Arsalan , Mahdavi roshan Marjan , Mirbolouk Fardin , Ashouri Asiyeh , Pourafshar Pouya
Published: August 2020

Objective: To evaluate the relationship between platelet count after primary percutaneous coronary intervention (p-PCI) and left ventricular aneurysm (LVA) in patients with acute anterior ST-elevation myocardial infarction(STEMI). Methodology: This descriptive study was performed on a population of patients with acute anterior STEMI, who had undergone p-PCI. Sampling was carried out by a consecutive survey of patients, who were admitted to the Medical Center in summer and fall of 2018. Blood samples were collected intravenously from all the patients at admission to the emergency department before and after p-PCI. Echocardiographic examinations were routinely performed by a specialist assistant as the co-author 8 to 12 hours after p-PCI and at follow-up (10 to 14 months after acute MI). The TIMI flow was observed immediately after p-PCI. In all the patients undergoing p-PCI, the location of left anterior descending (LAD) artery involvement during coronary arteries angiography was divided into three sections based on LAD artery length. Results: The mean WBC and PMN before p-PCI were statistically higher in the group of patients with LVA compared to individuals without LVA (p<0.001). Based on multivariate analysis platelet count (OR=0.999, age (OR=1.07), PMN before P-PCI (OR=1.001) had a significant additive effect on the probability of LVA formation. Conclusion: Platelet count can be used for prediction of the risk of future LVA formation in acute STEMI patients. Key words: ST-segment elevation myocardial infarction; platelet count; mortality; percutaneous coronary intervention; left ventricular aneurysm
CARDIAC SARCOIDOSIS PRESENTING WITH VENTRICULAR ARRHYTHMIAS
Authors: Khanzada Muhammad Faisal , Mumtaz Zubair , Mueed Abdul , Shaikh Sajid Ali , Naqvi Syed Haseeb Raza , Irfan Ghazala
Published: August 2020

Background: Clinically manifest cardiac involvement occurs in perhaps 5% of patients with sarcoidosis. The three principal manifestations of cardiac sarcoidosis (CS) are conduction abnormalities, ventricular arrhythmias, and heart failure. We report a patient whose initial manifestation of cardiovascular involvement was sudden cardiac arrest due to sustained ventricular tachycardia. Presentation: A 40 year old lady with a history with no significant past medical history presented one year ago with haemodynamically stable RBBB morphology with inferior axis wide complex tachycardia consistent with VT which reverted to sinus rhythm with intravenous metoprolol. Echo revealed normal LV function. She was then discharged on beta blockers and advised to get CT chest on follow up. CT chest revealed bilateral hilar lymphadenopathy and she was referred to pulmonologist. Diagnosis and Management: 6 months later she presented with incessant hemodynamically stable ventricular tachycardia that remained sustained for 24 hours despite intravenous beta blockers, amiodarone and verapamil requiring multiple cardioversions. She was sedated, mechanically ventilated and started on oral Propranolol and intravenous methylprednisolone with the suspicion of CS. Patient reverted to sinus rhythm within 24 hours of intravenous steroids. Patient’s PET scan confirmed the diagnosis CS. Follow-up and Outcomes: Though the diagnosis of early CS is difficult, detection and initiation of specific treatment is vital. Although the present case lacks a definitive tissue diagnosis, the patient meets accepted criteria for CS. ICD was implanted in this patient. Keywords: Wide Complex Tachycardia 1, Cardiac Sarcoidosis 2, Incessent 3, ICD 4, PET 5
Presença de Carlos Gomes na imprensa carioca em seu período de formação, 1859-1863
Authors: Virmond Marcos Da Cunha Lopes , Nogueira Lenita Waldige Mendes
Published: August 2020

A imprensa do Rio de Janeiro acompanhou Antonio Carlos Gomes durante os anos 1859-1863, deixando uma clara impressão do seu significado como compositor. Propomos um estudo documental utilizando a base de dados memória bn da Biblioteca Nacional para identificar essa percepção. Percebe-se a distinção de sua visibilidade enquanto músico antes e depois de A noite do castello. Ao contrário do que sugere sua biografia, Gomes não destacou-se nos primeiros anos no Rio, constatando-se uma proeminência de Henrique Alves de Mesquita. Esse quadro se altera com A noite do castello e se firma com Joanna de Flandres, mas não há tempo suficiente para que os efeitos de sua segunda ópera modifiquem a percepção da figura de Gomes através dos periódicos, uma vez que logo se retira para seus estudos em Milão.
O uso da música no game survival-horror Pesadelo – Regressão
Authors: Farias Vicente Reis de Souza , Iazzetta Fernando Henrique de Oliveira
Published: August 2020

Neste artigo analisamos o uso da música no game survival-horror Pesadelo – Regressão (Skyjaz Games, 2016) em comparativo com Amnesia – The Dark Descent (Frictional Games, 2011) e Outlast (Red Barrels, 2013). Relacionamos a música à noção de gêneros de videogames; discutimos como o gênero é compreendido dentro deste campo e como o survival-horror pode ser compreendido enquanto gênero. Comentamos acerca da música nos videogames e analisamos os jogos, com maior ênfase na análise de Pesadelo – Regressão. Concluímos que algumas decisões feitas na construção sonora de Pesadelo interferem na experiência do jogador de maneira negativa e comentamos como a produção independente e com pouco investimento pode afetar no resultado sonoro de um game.
O campo dos estudos de som no audiovisual, observação como método e audio-logo-visão: entrevista com Michel Chion
Authors: Alvim Luíza
Published: August 2020

Entrevista concedida por Michel Chion a Luíza Alvim em fevereiro de 2020, e por ela traduzida para a Revista Brasileira de Música.
Notas introdutórias ao Quarteto de cordas n.o 3, 1.o mov. (primeira versão), de Alberto Nepomuceno
Authors: Vidal João Vicente
Published: August 2020

Descrição de documentação e metodologia utilizadas para a preparação da edição do Quarteto de cordas n.o 3, 1.o. mov. (primeira versão), de Alberto Nepomuceno (1864-1920), com comentários ainda sobre o contexto histórico da obra.
Estimating solar radiation according to semi empirical approach of Perrin de Brichambaut: application on several areas with different climate in Algeria
Authors: Ghodbane Mokhtar , Boumeddane Boussad
Published: August 2020

The solar energy reaching a given surface is directly dependent on the orientation thereof and the position of the sun. To get maximum energy from the sun, it is necessary a good solar receiver orientation towards the solar radiation where the solar radiation is perpendicular to the solar collector, so the knowledge of the sun's position over time is a very important thing. The intensity calculate of solar radiation received by an inclined surface is the primary objective of this paper. The study is based on the true solar time, the geographic and astronomical data on-site study. Matlab was the simulation tool, where a program was developed to calculate the daily global solar radiation collected by any geographical site depending on the semi-empirical model of PERRIN DE BRICHAMBAUT. The some applications on different places in Algeria, like El-Oued, Biskra, Blida and Oran in the day of March 21, June 21, September 21 and December 21, and the results obtained were confirmed by comparing them with the previously results published by the researchers is of great competence in this field. Keywords: solar energy, global solar radiation, inclined surface, simulation
Water Potentiality of Sustainable Management Challenges in the Oued Souf Region, south east Algeria
Authors: Miloudi Abdel monem , Remini Boualame
Published: August 2020

Water is the essential product for life and is part of the essential constitution of living cells; it helps to realize all the vital operations. Water is a cosmic element, just as the sun and the earth.With population growth in the Souf region, the needs of habitats and water farmers increase. These requirements cause negative consequences for the serene life Souafa; the upwelling phenomenon of the water table has taken very alarming proportions during the late twentieth century.In our study, we interested in the mechanism of the drawdown of the aquifer waterOued Souf CTand irrational consequences of overexploitation of the aquifer on the environment of the region.
Fuzzy Logic Control of Wind Turbine Storage System Connected to the Grid Using Multilevel Inverter
Authors: BERBOUCHA Ali , DJERMOUNI Kamel , GHEDAMSI Kaci , AOUZELLAG Djamel
Published: August 2020

This paper aimed to evaluate the use of wind turbine storage systems to provide electricity in the electrical grid through a five-level inverter. The proposed system is composed of four wind turbine generators based on permanent magnet synchronous generator (PMSG), four battery storage systems connected to each capacitor of the DC link and a five level diode clamped inverter connected to the grid by three phase transformer. The control algorithm proposed is based on fuzzy logic to tracks and extract the maximum wind power by controlling the rotational speed of wind turbine, which is most appropriate when there is a lack of information on the characteristic Cp (λ,β) of the turbine. The system operator controls the power production of the four wind turbine generators by sending out reference power signals to each input side regulation unit, the input side regulation units regulate the voltage of each capacitor of the DC link, regulate the voltage and the state of charge of each battery storage system. The inverter is controlled by simplified space vector modulation which allows us to reduce the computational time and reduce the algorithm complexity compared to the conventional five levels space vector modulation, the grid side control level regulate the power and the current injected to the grid.
Potential assessment of using dry cooling mode in two different solar thermal power plants.
Authors: Boukelia Taqiy Eddine
Published: August 2020

Most of Concentrating Solar Power (CSP) plants are usually installed in desert regions where water resource availability is a critical limitation due to the lack of water required for the exploitation of these systems in these regions. Therefore, the aim of this study is to investigate the techno-economic competitiveness of deploying both modes of cooling (wet and dry) in two different parabolic trough solar thermal power plants integrated with thermal energy storage and fuel backup system; the first one is using thermic oil, while the other is working using molten salt. The obtained results show that the dry cooling mode can decrease the yields of the two power plants down to 8.7 % and 9.3 % for oil and salt configurations respectively. On the other hand, the levelized cost of electricity can increase by using this cooling option up to 9.3 % for oil plant, and 10.0 % for salt one. However, the main advantage of using dry cooling option is reducing water consumption which has been decreased by more than 94 % for both plants. The application of our methodology to other two sites worldwide, confirms the viability of the obtained results. The importance of this results is to show the effect of working fluids on the cooling system of solar power plants.
Proposed Algorithm MPPT for Photovoltaic System
Authors: Bechouat Mohcene
Published: August 2020

A proposed algorithm MPPT (Maximum Power Point Tracking) is proposed in this paper. When the insolation change rapidly, the P&O (Perturb and Observe) algorithm is used to adjust the operating point of the PV (Photovoltaic) array close to the MPP (Maximum Power Point) for fast tracking; also, the INC (Incremental Conductance) algorithm and the fuzzy controller skip drawbacks of the P&O algorithm by decreasing oscillations around the MPP and the underestimated. In addition, to improve the control precision, the effectiveness of proposed algorithm is validated by simulation using Matlab/Simulink, the simulation results show that the proposed algorithm tracks the MPP quickly, reduces the oscillation around the MPP effectively and improves the energy conversion efficiency of the PV panel.
Impact of fuel energy prices in Tunisia
Authors: Jebali Lassaad , Kacem Anis
Published: August 2020

The policy of subsidizing petroleum derivatives in Tunisia distorts the real prices of goods and services. It does not take care on environment. There is no serious fiscal policies to reduce pollution generated by energy products.The calculation of the correlation matrix between different macroeconomic aggregates does not give a negative effect of oil prices on national GDP. However, this result is serious, because the impact on economic (performance) is hidden, affecting first the general level of prices, unemployment and inflation. Instability of oil prices has no apparent impact. This fact and instability make many difficulties to manage prices and inflation after revolution. Impact on GDP passes through Economic Vulnerability Indicator (EVI) and agricultural sector.
The relationship between the compressive strength and ultrasonic pulse velocity concrete with fibers exposed to high temperatures
Authors: Hassiba Belaribi , Mekki Mellas , Fraid Rahmani
Published: August 2020

The paper analyses the effects of high temperatures on the concrete residual strength using ultrasonic velocity (UPV). An experimental investigation was conducted to study the relationship between UPV residual data and compressive strength of concrete with different mixture proportions, cubic specimens with water-cement ratio of 0.35. They were heated in an electric furnace at temperatures ranging from 200°C to 600°C. In this experiment a comparison was made between the four groups which include two types of ﬁbers steel 0,19%, 0,25% and 0,5%, polypropylene: 0,05%, 0,11% 0,16 % by volume. Cube specimens were tested in order to determine ultrasonic velocity. The compressive strength was tested too. According to the results, relations were established between ultrasonic velocity in the specimens and the compressive strength at different temperature and the range of the velocity of the waves were also determined for this kind of concrete. Result of the test showed that UPV test can be successfully used in order to verify the consistency of structures damaged by fire.
Comparative Study between Sliding Mode Control and the Vectorial Control of a Brushless doubly fed induction generator
Authors: Moussa Oussama
Published: August 2020

Brushless doubly fed induction generators (BDFIG) show commercial promise forwind-power generation due to their lower capital and operational costs and higher reliability ascompared with doubly fed induction generators. This paper proposes a robust sliding mode control of grid-connected brushless doubly fed induction generator (BDFIG). The developed algorithm is based on the decoupling control by using oriented grid flux vector control strategy. The decoupling of the active and the reactive stator powers insures an optimal performance of the BDFIG at the sub-synchronous region. The stator of this machine incorporates two sets of three phase windings with different number of poles, power winding (PW) and control winding (CW). The proposed method is tested with the Matlab/Simulink software. Simulation results illustrate the performances and the feasibility of the designed control.
Selection of parameters to predict dew point temperature in arid lands using Grey theory: a case study of Iran
Authors: Qolipour Mojtaba , Mostafaeipour Ali , Rezaei Mostafa , Behnam Elham , Goudarzi Hossein , Razmjoo Armin
Published: August 2020

Dew point is the temperature at which water vapor in the air condenses into liquid with the same rate it evaporates. Dew point study is important in arid lands with low rainfall, also in other regions with various hydrological and climatological conditions. In this study, the Grey theory is applied for the first time to propose a framework approach to identify the important parameters affecting the prediction of dew point temperature. The ability of Grey theory to estimate and rank the parameters of a problem with missing data and uncertain conditions means that it has a good potential for mentioned application. For this research, 8 parameters are selected using literature review including: global solar radiation on a horizontal surface (H), water vapor pressure (VP), atmospheric pressure (P), sunshine duration (n), minimum air temperature (Tmin), maximum air temperature (Tmax), average air temperature (Tavg), and Relative Humidity (RH). The study is conducted for the city of Abadeh in Iran by using the data pertaining to a 10 year period between 2005 and 2015. The findings show that RH, Tavg, P, Tmax, Tmin, H, n and Vp with the grey possibility degrees of, respectively, 0.534, 0.551, 0.608, 0.622, 0.635, 0.695, 0.697 and 0.712, are the most important and effective parameters in prediction of dew point temperature. The proposed method also prioritizes the studied parameters in the order of their effectiveness on predicted dew point temperature.
Study of photovoltaic systems with differences connecting configuration topologies for applications in renewable energy systems
Authors: CHAHMI Abdelghani
Published: August 2020

This paper focuses in the optimization of the efficiency of photovoltaic power conversion systems; we present a new alternative for improving both the optimization of the efficiency of photovoltaic power conversion chain. In this way, we present to the valuation problem of photovoltaic by new coupling systems between photovoltaic generators and their loads and performance of photovoltaic (PV) systems and the efficiency of the energy conversion by using different configuration of power converters. Different type’s improvements have been proposed of different architecture in order to choose the correct PV architecture for each PV installation on the efficiency improvement in all power conversion level stages between PV cells and loads. In this context, this work presents the study and adaptive simulation of photovoltaic systems with micro inverters configurations for applications of renewable energy. We performed comparative between a central and distribution connection of converter via an adaptation floor with Maximum Power Point Tracker (MPPT) control. For this reason, it is important to know different types of architecture and different configuration of power converters in order to choose the correct PV architecture for each PV installation. Simulation results are used to demonstrate the proposed topologies to provide improvement in efficiency over existing traditional PV systems.