bluuebunny/crossref_metadata_2025 huggingface dataset:
MONTHLY DESIGN DATA FOR MAXIMUM SOLAR RADIATION FALLING ON COLLECTOR ARRAYS IN BAGHDAD CITY
Authors: HUSSİEN Ali
Published: April 2020

Increasing use of solar energy as a clean and free solution for energy demand necessitates proper use of its equipment, enhanced spatial planning and distribution of solar collectors, optimum directional facing and tilt angle to ensure maximum solar radiation falling, and decreasing as possible as the shading effects of panel arrays. Most existing references lack comprehensive data about shading effects that varied along the year and design of solar array. In the present work, enhanced theoretical design data of solar collector arrays were tabulated for each month in Baghdad. MATLAB program was used to calculate the maximum clear sky solar radiation per unit area per day. The tabulated data yields an economically saved design of solar field or rooftop collector systems. The results indicated that, the shading effect on panel arrays almost vanishes when the distance between two panel rows to panel height ratio is greater than 1 in summer and greater than 2 in winter.
Identification of factors influencing delayed presentation of cancer patients
Authors: Sharma Gargie , Gupta Sweety , Gupta Amit , Kalyani Vasantha C. , Rohilla Kusum K. , Thozhuthungal Sreejeev Aathira , Yanthan Yan Pothung , Kumar Utkarsh , Das Biswajyoti , Sharma Gaurav , Sehrawat Amit , Gupta Manoj
Published: April 2020

Background: Delayed presentation of patients of cancer is associated with poorer survival. Early presentation, timely diagnosis and treatment are critical factors in improving long-term survival for patients with cancer. Thus, reducing delays in diagnosis of cancer should be a priority. Against this backdrop this study was conducted to identify factors leading to delayed presentation of patients in advanced stages of cancer at our institute.  Methods: Newly diagnosed patients of cancer coming to radiation oncology, surgery and medical oncology outpatient departments were included in this study. Data was collected in a pre-validated questionnaire format.Results: 360 patients were included. Majority of patients 212 (58.9%) were male. 66.7% patients were from rural areas. Most of the patient’s educational level was upto primary schooling 178 (49.4%) and caregiver educational level was upto primary schooling 153 (42.5%). Reason for alternative treatment correlated significantly with patient awareness about the disease (p<0.03). Most common reason of the time gap given by patients was symptom appraisal 258 (71.7%).Conclusions: Educational level of patients, symptom appraisal, fear of side effects of treatment and awareness about disease were main reasons for delay in presentation of cancer patients. So, education regarding warning signs of cancer and symptom appraisal are important in reducing delays in presentation.
Profile of parotid tumors visiting tertiary health care facility in North India
Authors: Munjal Manish , Tuli Nitika , Rishi Porshia , Singh Harjinder , Talwar Shivam , Sharma Salony , Munjal Shubham
Published: April 2020

Background: Neoplastic lesions of head and neck presenting in a tertiary care facility were analyzed. This study is proposed to examine the epidemiological pattern of parotid tumors, histopathology correlations and relation of facial nerve with the parotid tumors.

Methods: This is a retrospective study of patients with head and neck neoplasms who presented to the ENT tumour clinic of Dayanand Medical College and Hospital over a period of 2 years i.e., from January 2018 to December 2019. Patients’ demographic profile, histopathological reports and pre-operative fine needle aspiration cytology reports were studied.  

Results: Total number of cases of head and neck neoplasms were 273 over a period of 2 years. Parotid tumours constituted 9.1% of the total head and neck neoplasm. Predominant age group in case of benign parotid tumors was 40-50 years, whereas in case of malignant neoplasms was 50-60 years. Posterior belly of digastric along with tragal pointer are the most consistent and reliable landmarks for Identification of facial nerve.

Conclusions: Identification of trunk of facial nerve using anatomical landmarks is the keystone for parotid surgery. Posterior belly of digastric along with tragal pointer are the most consistent and reliable landmarks for Identification of facial nerve.  
Role of pure tone audiometry in assessing ossicular status in patients with mucosal type of chronic otitis media
Authors: Das Deepthy , Sriraman Gurumani , Rajasekaran Valli
Published: April 2020

Background: Chronic suppurative otitis media (CSOM) is the disease of the middle ear cleft, which presents as hearing loss and ear discharge. This study aimed to assess the role of pure tone audiometry (PTA) in analysing the ossicular erosion in mucosal type of CSOM subjects.

Methods: The current cross-sectional study was conducted among 60 people with mucosal CSOM.  Preoperative hearing was assessed by PTA. The surgeries were done and intra operative ossicular status were recorded. IBM SPSS 20 software was used for the analysis. Student t-test was used to correlate ossicular status and PTA findings.  

Results: Among 60 subjects, 12 (20%) patients had eroded incus and 53 (88.3%) had normal stapes. The malleus was preserved in all patients. The result of our study showed that an average ABG of 58 dB at 500 Hz, 47 dB at 1 kHz, 41 dB at 2 kHz and 41 dB at 4 kHz in patients with   ossicular erosion. ABG for 500 Hz and 1 kHz were statistically significant for eroded incus. ABG for 500 Hz, 1 kHz, 2 kHz and 4 kHz were all statistically significant for eroded stapes.

Conclusions: There is a significant difference between the PTA findings at different frequencies between intact and eroded ossicular chain. Pre-operative ABG helps us to assess the status of incus and stapes.
A comparative study of post-operative outcomes in type 1 tympanoplasty using tragal chondroperichondrial shield graft and temporalis fascia graft
Authors: Muniasamy Pradeep Kumar , Srinivasan Dharanya Gopalakrishnan , Velayutham Prabu , Savery Nishanth , Krishnaswami Balasubramanian , Vellikannu Ramkumar
Published: April 2020

Background: Type 1 tympanoplasty is the reconstruction of perforated tympanic membrane with an intact and mobile ossicular chain. Among various autologous graft materials, temporalis fascia and tragal chondroperichondrium are commonly used, having their own merits and demerits. In our study, we have compared the results and postoperative outcomes of tympanoplasty using temporalis fascia and tragal chondroperichondrium.

Methods: This prospective comparative study included 60 cases of chronic suppurative otitis media - tubotympanic disease (CSOM-TTD) in a tertiary care centre. They were randomised into two groups of 30 patients each and were subjected to tympanoplasty using either tragal cartilage-perichondrium (group 1) or temporalis fascia graft (group 2) from November 2017 to May 2019. Objective hearing improvement at 1st, 3rd and 6th month postoperative follow-up and graft uptake rate at 3rd month were compared.  

Results: Incidence of cases was more in the age group between 31-45 years age group (53.3%). Graft uptake rate was 96.6% for temporalis fascia group and 83.33% for tragal group (p value - 0.194). Preoperative air-bone (AB) gap in group 1 was found to be 25±4.09 dB which improved to 11.73±2.21 dB at 6 months and in group 2, it was 25.7±3.94 dB which improved to 14.06±3.68 dB at 6 months. Mean improvement in hearing for tragal group (13.27 dB) was better than temporalis fascia group (11.64 dB) (p value <0.001).

Conclusions: Both temporalis fascia and tragal chondroperichondrium are suitable graft materials for tympanoplasty, although graft uptake was clinically better with the use of temporalis fascia.

 
Impact of adenoidectomy or adenotonsillectomy on paediatric quality of life using obstructive sleep apnoea - 18 questionnaire
Authors: Bamaniya Hemendra , Mobarsa Veena , Bhuie H. S. , Saxena Rajiv Kumar
Published: April 2020

Background: Recurrent adeno-tonsillitis can lead to problems of secretory otitis media/OSA/sinusitis and thus adenotonsillectomy is one of the most frequent done surgery in children. The present study aimed to evaluate the impact of adenoidectomy or adenotonsillectomy on the quality of life of children using obstructive sleep apnoea- 18 score.

Methods: A prospective study was conducted in the Department of Otorhinolaryngology, Head and Neck Surgery at Ananta Institute of Medical Science, Rajsamand between January 2017 to December 2019. A total of 60 patients of age group 4 to 15 years were included in study who were undergoing adenoidectomy or adenotonsillectomy. All patients were evaluated by using ‘obstructive sleep apnea - 18’ (OSA-18) preoperatively and 6 months post- operative period for impact on quality of life on children after surgery.  

Results: 60 children with a mean age of 8.6 years were evaluated. The most frequent indication for surgery was recurrent adeno-tonsillitis and obstructive sleep apnoea for adenoid hypertrophy. The total mean score of initial OSA-18 was 85.34, following surgery at 6 months, the total mean score was reduced to 31.23 (p value <0.001). Similarly, there was reduction in mean score of individual domains after surgery which was statically significant (p<0.001).

Conclusions: Our study concludes that on evaluation of children with adenoid hypertrophy using OSA-18 pre-operative and 6 months post-operative period, showed adenoidectomy or adenotonsillectomy has positive impact on paediatric quality of life.
Non-salivary and non-intestinal orbital adenocarcinoma
Authors: Clarós Pedro , Diandaga Maleka Aymar , Walag Agnieszka , Clarós Andrés
Published: April 2020

The non-salivary and non-intestinal adenocarcinomas are glandular tumors that include cases of low grade with low metastatic potential and high-grade ones, with aggressive metastatic potential. We present a clinical case of a 47 years old patient, referred to an ENT specialist because of swelling of the inner corner of right eye. Computed tomography (CT) and magnetic resonance imaging showed a proliferation process. The histopathological examination of the tumor biopsy revealed a high grade, non-salivary and non-intestinal orbital adenocarcinoma. Afterwards we review the literature on the subject. The primary non-salivary and non-intestinal orbital adenocarcinoma is characterized by locoregional aggressiveness, making treatment difficult and often mutilating. The prognosis is generally unfavourable. The clinician must exclude a malignant process of lacrimal sac in any patient presenting with a mass of the inner corner of the eye, with the help of the CT associated with magnetic resonance imaging. At the slightest doubt, the biopsy must be obtained. The treatment is multidisciplinary.
Plunging ranula in 26 years old male: a case report
Authors: Dhingra Rachna , Davessar Jailal , . Pushkal , A. K. Vignesh , Sharma Shruti
Published: April 2020

Ranula is a bluish translucent cystic lesion in the floor of mouth. It can be true cyst occurring due to obstruction of the sublingual gland or a minor salivary gland or a pseudocyst as a result of ductal injury leading to extravasation and accumulation of saliva in surrounding tissues. Two variants of ranula are described in the literature: simple oral ranula and deep diving or plunging ranula. We report a case of plunging ranula with both oral and cervical components which is treated successfully by surgical excision. This case report involves an unusually large ranula involving floor of mouth with cervical extension, more towards left side, in a 26 years old male. It is successfully removed in- toto by transcervical approach. The patient was followed up on a regular basis and was disease free.
Establishment of significant improvement of hearing post-surgery for mucosal type of chronic suppurative otitis media
Authors: Das Deepthy , Sriraman Gurumani , Rajasekaran Valli
Published: April 2020

Chronic suppurative otitis media occurs in the population as a common disease among people living in low socio-economic status. The associated complaints such as hearing difficulty, irritation, discharge makes it difficult for the people to carry out their daily activities. Therefore, their immediate need for treatment occurs. This review aims at analysing the post-operative outcome of hearing following tympanoplasty in order to overcome their morbidity. The source of this study has been obtained from Pubmed, Google scholar and EMBASE. The material for this review was selected from a reference published between January 1975 to December 2014, with this analysis was made. The pre-op ABG in the studies were all falling in mild to moderate hearing loss according to WHO classification of hearing loss. The patients were grouped in Austin-Kartush criteria, groups A to E. The Austin-Kartush classification group A had 3 studies included. The mean ABG for each were 11.5,8.3 and 13.5. In group B,3studies were included. The mean ABG for each were 11.9,10.9 and 11.1. Group C had 4 studies. The mean ABG were 17.7,15,17.1 and 15.7. Group D had 4 studies included which had the same mean ABG 16.6. Group E had just 1 study of mean ABG 20.1. This review helped to establish that there was significant improvement in hearing post-surgery, in patients with varying degrees of hearing loss.
Impact of Computer Misuse in the Workplace
Authors: Alaydrus Lely Lubna , Nusraningrum Dewi
Published: April 2020

Computer misuse leads to computer-related injuries. The incidence of computer-related injuries (CRIs) is reported having a high incidence among office personnel who works routinely with the computer. The purpose of this research is to figure out the incidence of computer-related injuries in an organization with a majority of employees using technology such as a computer. This research is a survey of 120 office personnel selected with a simple random sampling method. The data was collected by distributing a self-administered questionnaire. The results showed that the office personnel experienced computer-related injuries such as computer vision syndrome (eye strain, blurred vision, watery eyes, and headache) and musculoskeletal disorders such as neck pain, shoulder and, waist pain. Ergonomic training is highly recommended to be conducted routinely by the organization to reduce the incidence of CRIs among office personnel.
Keywords: computer misuse; computer vision syndrome; musculoskeletal disorder; office personnel.
Game Theoretical Analysis of Corruption on the Road in Indonesia
Authors: Ibnu Abbas Muhammad Hasyim , Maytandi Andre
Published: April 2020

This paper aims to analyze the empirical mechanism of the bribery and extortion on the roads in Indonesia. Using a game theoretical approach, the game is played by two representative agents, namely Police and Rider. The mechanism is modeled into two stage games. Stage 1 adopts the 2x2 simultaneous Tsebelis’ inspection game refined by Pradiptyo. Stage 2 illustrates two scenarios of sequential game. Stage 1 proposes that the benefit of enforcing the law gained by the police becomes rider’s important consideration to violate the traffic laws and rules while stage 2 proposes that the benefit of enforcing laws and rules is the important point to avoid bribery. Stage 2 also suggests that the law enforcement institutions may think carefully before increasing the severity of penalties and sanctions suffered by riders because it would increase the likelihood of police to extort the riders.
Keywords: Bribery, Extortion, Game Theory, Inspection Game
Can Suramadu Bridge Reduce International Migration? (Case Study in Bangkalan Regency, East Java Province, Indonesia)
Authors: . Karyadinata , . CHK , . M. Pudjihardjo , . A. Manzilati , . W. Syafitri
Published: April 2020

Migration is one way for villagers in Bangkalan District to survive and improve their lives. Availability of employment and differences in the level of wages received in migrant areas are attractive factors, while the condition of villages in terms of physical capital, human capital, financial capital and natural capital which are less than ideal are the driving factors for migrating. This study examines the impact of the Suramadu bridge on the number of villagers migrating internationally using Village Potential data in 2007 and 2017 along with the factors that influence villagers to migrate internationally. Data were analyzed using tobit regression. The existence of the Suramadu bridge was not able to reduce the interest of the population to migrate internationally, instead it even increased the interest of the population to migrate internationally. Before the Suramadu bridge was operational, the existence of rice fields, building area, program credit, non-agricultural business, educational facilities and superior products reduced the interest of villagers to migrate internationally. After the Suramadu bridge operated, the existence of rice fields, building area and skills facilities reduced the interest of villagers to migrate internationally and the presence of poor people in the village increased the interest of residents to migrate.
Keywords: Migration, Infrastruktur, Rural, Regional
Analysis of Presentation and Disclosure of Tax Amnesty Assets and Liability in the Financial Statements of Listed Public Company in Indonesia
Authors: Martani Dwi , Maharani Ayu
Published: April 2020

The purpose of this study is to analyze the implementation and consistency of the presentation and disclosure of tax amnesty assets and liabilities based on PSAK 70 about Accounting for Tax Amnesty Assets and Liabilities. This study uses content analysis and focuses on companies participating in tax amnesty based on Law No. 11 of 2016 concerning Tax Amnesty. Companies that participate in tax amnesty need to adjust their accounting policies to present and disclose tax amnesty assets and liabilities. The presentation and disclosure options are carried out consistently for all tax amnesty assets and liabilities. The analysis showed that the company consistently presents its tax amnesty assets and liabilities according to the options selected in PSAK 70. However, the completeness of disclosure of tax amnesty elements in the financial statements was relatively diverse.
Keywords: tax amnesty, tax amnesty assets, tax amnesty liabilities
The Influence of the Financial Distress, Conflict of Interest, and Litigation Risk on Accounting Conservatism
Authors: Mar'atus Sholikhah Ristya , Wilujeng Suryani Ani
Published: April 2020

This study aims to determine the effect of financial distress, conflict of interest, and litigation risk on the implementation of accounting conservatism. Data were collected from 20 annual reports of a manufacturing company in Indonesia, which is being experienced financial distress from the period 2014 to 2017. Model data analysis in this research is panel data regression. The results of this study indicate that financial distress can reduce the application of accounting conservatism. Relatively low conflicts of interest between investors and creditors have not been able to influence accounting conservatism. However, conservative reporting can avoid the litigation risk in the future. This research can be an input for companies to recognize early financial conditions, so they can overcome problems that might occur. For investors, creditors, and the government must monitor the behavior and actions of managers in presenting financial statements so as not to harm other parties. For further research can use financial that are prone to detect financial distress and add samples from other company sectors.
Keywords: Accounting Conservatism, Financial Distress, Conflict of Interest, Litigation Risk
Coaching As Determinant of Job Performance: Co-working Support As Mediating Variable
Authors: Tri Wijayati Dewie , Fazlurrahman Hujjatullah , Kholidi Hadi Hafid , Rahman Zainur , Kautsar Achmad
Published: April 2020

Employees become movers in all types of businesses. Good or bad depends on the job performance of its employees. Therefore, managers are currently starting to discuss investments that consist of coaching for employees. Intense inter-company relations, so that inter-company relations will affect his work and will have an impact on his Job performance. For the sake of hope is to improve employee performance and development. the purpose of the research is to find out the effect of coaching on the job performance that is moderated by co-worker support. This study discusses the relationship between providing coaching to XYZ employee job performance in a company that is moderated by co worker support. This study will explore the exploration of training provided to employees. The sample size of this study is 80 employees and author use PLS (Partial Least Square) to measure the research model. The results of the study explain significant coaching on job performance. However, mentoring is moderated by the support of coworkers is not significantly approved for job performance.
Keywords: Coaching, Co-working support and job performance
The Effect of Integrated Firm’s Reporting on Firm’s Performance
Authors: Nurim Yavida , Wardoyo Cipto , Astuti Sri , . Zuhrohtun
Published: April 2020

This study investigates the effect of integrated firm’s reporting on firm’s performance. The integrated financial reporting contains of financial, good corporate governance (GCG) and sustainability reporting that shows company’s responsibility to capital providers, environment and social. The important question is whether more disclosure indicates more informative for decision maker. Therefore, it is important to identify which reporting useful for primary users. This study examines 108 public comphanies that granted ISRA (Indonesia Sustainability Reporting Award) from 2013-2017 for firm’s performance, GCG index, and sustainability index. The result shows that information for capital providers can be used for investment and credit decision. This finding indicates company faces agency conflict, so company’s disclosure dedicates for primary users, namely creditor and shareholder. This finding also indicate that earnings more informative than good corporate governance and sustainability reporting. It may show the concentrated ownership in Indonesia encourages management to behave less aggressive.
Keywords: Tobin’s Q, integrated firm’s reporting, good governance, sustainability reporting, earnings
The Impact of the Industrial Revolution 4.0 on Employment in Indonesia
Authors: . Ilyas , Nuraini Dwiputri Inayati , . Isalman , . Wahab , Suseno Sandy
Published: April 2020

This research was conducted to find out the impact of the Industrial Revolution 4.0 on employment in Indonesia. The method used in this study is a qualitative research method with data in the form of literature review and analyzed with content analysis. The results of this study indicate that the 4.0 industrial revolution has hit the world, including Indonesia. The basis of the 4.0 Indonesian Revolution lies in the progress in communication and connectivity compared to technology. The Industrial Revolution 4.0 was marked by the emergence of technological breakthroughs in a number of fields, including robotics, artificial intelligence, nano technology, quantum computing, biotechnology, the Internet of Thing (IoT), 3D printing, and autonomous vehicles. This revolution creates opportunities and of course saves the various challenges that must be faced. The industrial revolution has significantly affected labor aspects. The policies that can be taken by the government to improve labor capabilities are: First, harmonization of standardization and competency certification through cross-sectoral, cross-regional, and cross-country business partner cooperation, within the framework of market openness. Second, the development of partnership programs between the government and business / industry and between the central government and regional governments to improve the quality of the workforce. Third, improving governance in organizing training programs to accelerate worker certification. Fourth, expanding economies of scale towards sectors / sub-sectors with high productivity. The conclusions of this research: increasing the workforce and decreasing unemployment, as well as the increasing number of young people who succeed in digital business, shows that Indonesia has successfully exploited the opportunities of the Industrial Revolution 4.0.
Keywords: Industrial Revolution 4.0, Technology, Labor
COVID-19: An Accelerated Learning Challenge for Developing & Developed Countries Alike
Authors: Bella Professor Hassan
Published: April 2020

Covid-19 is the fastest evolving and most horrific pandemic in the recent global history. It is perhaps the greatest and most daunting challenge humanity has faced since World War II and could bring on so many sequelae and a ‘recession with no parallel in the recent past’ [1]. The editors of the Sudan Journal of Medical Sciences have commissioned this timely issue of the journal to assess the implications of this unprecedented event on Sudan’s healthcare sector.
Researching the literature for the purpose of this editorial, using Google Scholar and other authentic search engines, produced a seemingly infinite number of titles. Never in my career as medical teacher and researcher I have encountered such a vast volume of literature produced on one subject in such a very short time.
Análise do desempenho termoenergético de diferentes tipologias de vidro em Habitação de Interesse Social em Cuiabá - MT
Authors: Gabriel Elaise , Meller Gabriela , Da Silva Faccio Natalia , Mansuelo Alves Domingos Renata
Published: April 2020

O edifício, como mecanismo de controle das variáveis climáticas, deve proporcionar eficiência energética e conforto ao usuário. Os vidros são os maiores transmissores de calor para o interior da edificação, portanto, a escolha da tipologia utilizada deve ser criteriosa, levando em conta o clima ao qual será inserido. Este artigo propôs analisar a influência de diferentes tipologias de vidro no consumo de energia elétrica, nos ganhos internos de calor e no conforto térmico interno de uma habitação de interesse social (HIS) na cidade de Cuiabá – Mato Grosso. A metodologia dividiu-se em três etapas, sendo a primeira a definição da edificação de referência, seguida da escolha das tipologias de vidros e, por fim, a simulação computacional térmica do edifício utilizando o programa DesignBuilder. A edificação de referência adotada para a pesquisa foi uma HIS de 56,50m², e foram avaliados os vidros simples, duplo, triplo e vidro termocrômico, todos com espessura de 6mm. Através das simulações energéticas, constatou-se que o vidro termocrômico apresentou maior eficiência quanto ao consumo de energia, seguido do vidro triplo com alto rendimento no quesito diminuição de incidência solar no interior do ambiente. Dessa forma, constatou-se que os vidros termocrômico e triplo são os que apresentam melhores desempenhos.
Índice de Mobilidade Urbana Sustentável (IMUS) para os Aspectos Ambientais e Modos não Motorizados em Sinop-MT
Authors: Boter Ferraz Lucas João , Marsaro Cella Alexandra , Mansuelo Alves Domingos Renata , Guarda Emeli Lalesca Aparecida da , Sanches João Carlos Machado
Published: April 2020

O conceito de mobilidade urbana tem influência direta nas populações das cidades. O Índice de Mobilidade Urbana Sustentável (IMUS) é uma ferramenta de avaliação e diagnostico dos aspectos de mobilidade, proposto com o intuito de abranger as diversas áreas que esse tema possui. O índice possui uma estrutura composta por domínios, temas e indicadores, permitindo em sua aplicação uma análise parcial. Nesta pesquisa, buscou-se aplicar em Sinop o IMUS de maneira setorial sobre os domínios Aspectos Ambientais e Modos não Motorizados, que atingiram 40,7% e 40,5% da pontuação máxima, respectivamente. Esses números representam influências negativas na mobilidade urbana. O crescimento acentuado da frota de veículos motorizados, em ritmo muito acima do crescimento populacional e da implantação de obras de transportes reflete o desafio enfrentado atualmente no município, sendo necessárias soluções para que a tomada de ações seja efetiva. A partir dos resultados obtidos são feitas sugestões de melhorias para atender as exigências na área da mobilidade urbana, cada vez mais rígidas devido a sua crescente discussão.
Methods for Solving User Authentication and Identification Problems Based on Keystroke Dynamics Analysis
Authors: Yamchenko Yu.V.
Published: April 2020

Nowadays, information technologies are used in almost every sphere of our life. Large amounts of personal and corporate data are stored in digital form. Thus, the problem of protecting this data from unauthorized access is raised. Access control subsystems and technologies used in these subsystems, in particular, methods of user authentication and identification, play an important role in this case. The paper provides an overview of methods for solving information system user authentication and identification problems based on the analysis of their keystroke dynamics. These tasks are considered in detail, a brief history of methods for keystroke dynamics authentication and identification is described, their advantages and disadvantages compared with other known methods are indicated and the relevance of this line of research is substantiated. The main stages of creating mathematical models for solving these problems are listed. The description of the methods used in each of these stages is also presented
Estimating Perceived Brightness in Low Luminance Conditions
Authors: Pyasetsky V.B.
Published: April 2020

Mesopic photometry, which studies visual perception of low-level optical radiation, is of great interest today in lighting engineering. It involves investigating human responses to visual observations in low light conditions in the object space, determining the optimum artificial illumination levels in industrial areas, and solving clinical perimetry problems. The estimation procedure for mesopic photometry recommended by the International Commission on Illumination (CIE) is based on computing a combination of photopic (daylight) and scotopic (nighttime) visual perception levels. This procedure being iterative makes it inconvenient to apply in engineering practice, as the number of iterative steps proves to be several dozens on average, exceeding a hundred in certain cases. As a result, the feasibility of using the CIE procedure instead of a purely photopic perception technique becomes questionable. The discrepancy in the results obtained via these methods informs the selection criterion. The paper compares computation results for perceived brightness in photopic and mesopic vision in low luminance conditions. We also establish whether it is possible to find analytical solutions using the CIE procedure. We show that, for radiation of a colour temperature in the range of 950--12000 K, the maximum computational discrepancy between photopic and mesopic vision scenarios lies in the --200--50 % range, while the minimum discrepancy is approximately 5 % for radiation characterised by a colour temperature of approximately 2000 K. We also present analytical solutions for several specific cases according to the CIE procedure
Sitall Glass-Ceramic Treatment Technology for the Case of Etching and Cleaning of a Ring Laser Monolithic Crystal
Authors: Bolotnov А.S. , Slitikov P.V.
Published: April 2020

The paper uses production of the main part of a ring laser, that is a monolithic sitall crystal, as an example to describe the main stages of manufacturing and chemical processing of the SO-115M lithium aluminosilicate sitall glass-ceramic material. We analysed composition optimisation and glass-ceramic production methods and investigated the effects of various components (such as glass formers, modifiers, and clarifiers) on the optical performance of the finished article. We describe the sequence of main monolithic crystal processing operations: etching and cleaning, which includes degreasing, ultrasonic treatment, rinsing and drying. We tested an original etchant formulation and present an etching rate calculation for it. We selected a solution for ultrasonic cleaning of the article and assessed the resulting surface finish quality
Analysis of the efficiency of hydrocarbon propellant cooling using liquid nitrogen and a combination of recuperative heat exchangers
Authors: Aleksandrov A.A. , Barmin I.V. , Zolin A.V. , Chugunkov V.V.
Published: April 2020

The paper describes the propellant cooling system using liquid nitrogen and a combination of recuperative heat exchangers, including sections of the double pipe heat exchanger and a twisted heat exchanger located in a tank with antifreeze, cooled by nitrogen gas coming out of the sections of the double pipe heat exchanger. Mathematical models of cooling processes for two variants of movement of propellant and liquid nitrogen in the channels of the double pipe heat exchanger sections are considered. Their using makes it possible to analyze the efficiency of propellant cooling operations depending on its mass, design parameters of the system tanks and heat exchangers, consumption characteristics of nitrogen and propellant, as well as to predict the required mass of liquid nitrogen and the time of propellant cooling during the operation of launching complex propellant-feed systems. Calculated dependences and simulation results of propellant and antifreeze cooling in a tank with a twisted heat exchanger are presented. The influence of variants of arranging propellant cooling processes and liquid nitrogen consumption on the efficiency of the cooling system is analyzed. Comparing to the available systems the capability of reducing the cost of liquid nitrogen are identified as well as reducing time of the propellant cooling operations by means of equipping launch complexes.
To Mel Watkins
Authors: Polanyi Levitt Kari
Published: April 2020

A tremendous loss to the Canadian Left.
Aethelflaeda – kobieta, która broniła Anglię przed wikingami
Authors: Madej Michał
Published: April 2020

Aethelflaeda (ok. 870–918) była córką Alfreda Wielkiego, króla Wessexu. Czasy, w których żyła, były dla terenów dzisiejszej Anglii niezwykle ciężkie. Choć w przełomowym roku 878 jej ojciec pokonał jednego ze skandynawskich wodzów Guthruma w bitwie pod Edington i zwycięstwo to przyniosło Anglosasom kilkanaście lat pokoju, to północna i wschodnia część kraju wciąż znajdowała się pod panowaniem wikingów. Artykuł ten ma na celu ukazać przede wszystkim dokonania Aethelflaedy. Bez wątpienia odziedziczyła po ojcu siłę charakteru i determinację, by całkowicie usunąć wikingów z Anglii. Po śmierci męża, ealdormana Mercji Aethelreda sama sprawowała rządy w tym kraju, co z racji płci było w jej czasach czymś wyjątkowym. Wraz z bratem Edwardem Starszym kontynuowała rozpoczętą przez Alfreda fortyfikację miejscowości, m.in. w 917 r. udało jej się odbić z rąk wikingów Derby, jedną z ich głównych baz. Sukcesy Aethelflaedy przerwała, niestety, nagła śmierć w kolejnym roku. Pamięć o jej czynach przetrwała jednak pokolenia.
Generał Władysław Sikorski – minister spraw wewnętrznych Rzeczypospolitej Polskiej (16 grudnia 1922 – 28 maja 1923)
Authors: Kozyra Waldemar
Published: April 2020

Władysław E. Sikorski urodził się 20 maja 1881 r. w Tuszowie Narodowym pod Mielcem. Ukończył Politechnikę Lwowską. Do 1918 r. działał w ruchu niepodległościowym, był współtwórcą Legionów Polskich i Naczelnego Komitetu Narodowego. W 1915 r. popadł w konflikt z Józefem Piłsudskim na tle sposobów odbudowy państwowości polskiej u boku Austro-Węgier i werbunku do Legionów Polskich. Od 12 października 1918 r. służył w Wojsku Polskim. W czasie wojny polsko-bolszewickiej (1919–1920) podczas bitwy warszawskiej w sierpniu 1920 r. dowodził z powodzeniem 5 Armią. Po zabójstwie prezydenta Gabriela Narutowicza 16 grudnia 1922 r. jeszcze tego samego dnia powołany został na stanowisko prezesa Rady Ministrów RP i ministra spraw wewnętrznych. W tym trudnym i niebezpiecznym dla Polski czasie, wbrew pozorom, to funkcja nie tyle premiera, co ministra spraw wewnętrznych dawała gen. Władysławowi Sikorskiemu realną władzę i możliwość bezpośredniego oddziaływania na sytuację wewnętrzną w kraju, zwłaszcza na stan jego bezpieczeństwa wewnętrznego. Generał Sikorski dokonał zmian personalnych w strukturze resortu, usuwając z niego osoby odpowiedzialne politycznie i służbowo za wypadki grudniowe 1922 r. Realizował politykę administracyjną resortu, której głównym celem było utrzymanie spokoju i bezpieczeństwa publicznego poprzez zwalczenie partii i ugrupowań politycznych, które wprost i jawnie zmierzały do obalenia dotychczasowego porządku polityczno-społecznego. Wiele uwagi minister spraw wewnętrznych poświęcał sprawom mniejszości narodowych, zwłaszcza ukraińskiej i białoruskiej, jak też sytuacji społeczno-politycznej na Kresach Wschodnich. Przygotował całościową politykę państwa wobec mniejszości narodowych, której podstawą była koncepcja asymilacji politycznej (państwowej). Gabinet gen. W. Sikorskiego upadł 26 maja 1923 r., a w stanie dymisji działał do 28 maja 1923 r. W latach 1923–1943 gen. W. Sikorski pełnił m.in. funkcję ministra spraw wojskowych (1924–1925), a po klęsce wrześniowej 1939 r. na obczyźnie (we Francji i Anglii) sprawował funkcję premiera Rządu Obrony Narodowej i Naczelnego Wodza. Zginął w katastrofie lotniczej w Gibraltarze 4 lipca 1943 r.
Wizerunek Waltera Pelzhausena, komendanta więzienia w Radogoszczu w zeznaniach i wspomnieniach byłych więźniów
Authors: Parol Jakub
Published: April 2020

Więzienie Radogoszcz należało do niemieckiej policji i znajdowało się we wsi niedaleko Łodzi. Jego komendantem był Walter Pelzhausen, urodzony w 1891 r. w Arnstadt. W trakcie pierwszej wojny światowej służył w armii niemieckiej. Po zakończeniu działań wojennych pracował w policji. Niedługo po wybuchu drugiej wojny światowej został przeniesiony do Litzmanstadt-Łódź, służąc od października 1939 r. do lipca 1940 r. w Schutzpolizei Litzmanstadt, otrzymując stopień służbowy „Maister of Schutzpolizei”. W lipcu 1940 r. objął zarząd nad więzieniem w Radogoszczu. Komendant był zdegenerowanym psychopatą. Bił każdego napotkanego na swojej drodze więźnia. Osobiście zastrzelił dziewięciu osadzonych, którzy ukradli chleb z więziennego magazynu. W 1945 r. komendant wraz z personelem więzienia dokonał masowego mordu, zabijając ponad 1000 więźniów. Po drugiej wojnie światowej były komendant został schwytany we Frankfurcie (strefa amerykańska). Wydany został polskiemu wymiarowi sprawiedliwości, który w 1947 r. skazał go na śmierć. Stracono go w więzieniu na ul. Sterlinga w 1948 r. W trakcie procesu karnego więźniowie stwierdzili jednogłośnie, że był najbrutalniejszy wśród całej załogi więzienia.
HIV Testing Behaviors among Black Rural Women: The Moderating Role of Conspiracy Beliefs and Partner Status Disclosure
Authors: Hood Kristina B. , Hall Calvin J. , Owens Bianca D. , Patev Alison J. , Belgrave Faye Z.
Published: April 2020

Objective: This study investigated whether HIV testing attitudes, HIV conspiracy beliefs, and reported sexual partner disclosure of HIV/STI status related to one-month self-report HIV testing outcomes following a brief intervention among Black women aged 18-25 years residing in rural Mississippi.Participants: Black women (N=119; Mage=19.90, SD=1.81) recruited in rural Mississippi completed an online assessment before a brief HIV prevention intervention and a one month follow-up assessment dur­ing January to November 2016.Main Outcome Measures: Self-reported HIV testing 30-days following the interven­tion, partner HIV/STI status disclosure, beliefs in HIV conspiracy theory, and HIV testing attitudes in pre- and post-interven­tion assessments. Bivariate and multivariate analyses tested associations with HIV testing behaviors following the intervention.Results: Moderated moderation was used to examine whether HIV conspiracy beliefs and partner disclosure status both moder­ated the relationship between pre-interven­tion attitudes toward HIV testing and HIV testing at 1-month follow-up. It was found that both HIV conspiracy beliefs and partner disclosure moderated the relationship between attitudes and HIV testing at one-month follow-up. When partner disclosure was low, women with more negative at­titudes toward testing and higher conspiracy beliefs were less likely to get tested than those with negative attitudes and lower conspiracy beliefs; conspiracy beliefs did not relate to testing outcomes when testing attitudes were positive.Conclusion: Findings suggest that interven­tions may benefit from accounting for con­spiracy beliefs and the dyadic status disclo­sure when encouraging young rural women to test for HIV.Ethn Dis. 2020;30(2):251- 260; doi:10.18865/ed.30.2.251
Barriers to Testing for Sexually Transmitted Infections among HIV-Serodiscordant Couples: The Influence of Discrimination
Authors: Alarcon Jenna , Loeb Tamra B. , Hamilton Alison B. , Moss Nicholas J. , Curley Condessa M. , Zhang Muyu , Jordan Wilbert C. , Lockett Gloria , Carey-Grant Cynthia , Wyatt Gail E.
Published: April 2020

Objectives: African Americans face chal­lenges in accessing services for sexually transmitted infections (STIs). From 2012- 2016, the EBAN II intervention was funded by the NIH to test the effectiveness of implementing a culturally congruent, evidence-based HIV/AIDS prevention program in Los Angeles and Oakland, California. This study examined the impact of personal characteristics and experiences of discrimination on the likelihood of being tested for STIs.Method: Participants (N=91) completed a baseline survey. Descriptive statistics were used to test for differences between those who did and did not obtain STI testing. Factors included HIV serostatus, sociodemo­graphic variables, STI history, the presence of outside partners, and discrimination ex­periences. Multiple logistic regressions were conducted for men and women separately.Results: Participants with no recent experi­ences of discrimination were more than 3 (3.4) times more likely to obtain a baseline STI test than those who reported discrimina­tion experiences. HIV-positive women with no recent experiences of discrimination were 11 times more likely than those with reports of recent discrimination to obtain STI tests.Conclusions: It is often women who are the gatekeepers for health seeking in families and the same may be for these couples. Ex­periences of discrimination may impede STI testing, and heighten several health risks, particularly among HIV-positive African American women in HIV-serodiscordant relationships. Addressing the impact of dis­crimination experiences may be important for STI prevention and treatment efforts in interventions promoting health care utilization. Ethn Dis. 2020;30(2):261-268; doi:10.18865/ed.30.2.261
Induction Generator Characterization for a Medium and Low Wind- Power Generator
Authors: Camacho-Quintana Julián Esteban , Salamanca-Céspedes Jorge Enrique , Gallego-Torres Adriana Patricia
Published: April 2020

The following paper was part of the research work of the GEOM Seed Plant, which develops medium and low power wind generators. The aim was to develop proposals of prototypes that contribute with innovation and research to the development of non-conventional renewable energies. We studied the behavior of an electric induction generator in order to implement it in a low and medium power wind generator, the study was characterized by using two points of view: theoretical machine analysis and virtual implementation with software-level technological tools such as Simulink. The resulting model meets the climatological conditions of the city of Bogotá, where there are ideal conditions for the exploitation of wind energy, taking the concept of total available power as reference for the analysis of the generator. The electrical and application advantages and disadvantages were analyzed. Finally, it was determined, based on the analysis processes, that the use of an induction machine is more convenient compared to a synchronous one, in order to perform future implementations that are optimal and efficient and support the study and development process of non-conventional renewable energies, particularly wind energy.
Teaching information literacy to 11-16-year-old teenage members of public libraries of Tehran 1st region
Authors: Mirzakhani Kiarash , Dashti Anahita
Published: April 2020

Teaching information literacy is a new important issue, which has received lots of attention from most organizations and different institutions of Iran. Public libraries in different countries of the world have also paid attention to this important issue. The aim of this research is to teach information literacy to 11-16-year-old teenage members of public libraries of Tehran 1st region. This is a descriptive study conducted using survey method. The statistical population of the research consisted of teenage members (11-16 years old) of Shahid Bahonar public library, who are more than 500 individuals. Using Morgan table, research sample size was calculated to be 217. Data were collected using researcher-made questionnaire. The collected data were analyzed by descriptive and inferential statistics.  Research findings showed that the information literacy skills of 11-16-year-old teenage members of public libraries of Tehran 1st region (3.38) are higher than average (3) and the role of information literacy in teaching information literacy to teenagers (2.5) is lower than average (3).
Fandom como instrumento de ação cultural: a produção participativa e o compartilhamento nas bibliotecas públicas brasileiras
Authors: Silva Bruna Daniele de Oliveira , Sabbag Deise Maria Antonio
Published: April 2020

As bibliotecas públicas brasileiras são percebidas como depósitos de livros que servem a uma parcela seleta da sociedade. Em contraponto, o fandom constitui-se de indivíduos com interesses em comum, isto é, seus membros desenvolvem de forma colaborativa suas atividades. O artigo objetiva investigar a relação dos fandoms com as bibliotecas públicas brasileiras e verificar, após análise dos dados, se as atividades de fandoms são aplicáveis nessas instituições. A pesquisa tem caráter descritivo-exploratório com abordagem qualitativoquantitativa. Para coleta de dados, foi aplicado questionário por meio dos formulários do Google. Como método de análise, foi utilizada a análise de conteúdo categorial, a partir de estudo estruturado do conteúdo. Os dados coletados demonstram que 59% dos respondentes não conhecem o conceito de fandom, 82% acreditam que há demanda por novas atividades na biblioteca e 84% consideram possível desenvolver atividades de fandom apenas com os recursos atuais. As atividades de fandom estão diretamente ligadas à leitura, à escrita e ao desenvolvimento de diversas competências importantes para o indivíduo, tais como os letramentos informacional e digital. Portanto, sua aplicação na biblioteca pública, além de fomentar o uso desse espaço, pode engajar leitores e a comunidade e promover a sociabilidade, isso pode convertêla em um instrumento de transformação social.
A importância da mediação comunicativa da informação na prática bibliotecária
Authors: Castro Jetur Lima de , Silva Luiz Eduardo Ferreira da , Oliveira Alessandra Nunes de
Published: April 2020

Considerando que ações comunicativas possibilitam práticas relacionais que percorrem para além da transferência de conhecimento nas atividades bibliotecárias, objetiva-se analisar a importância da Mediação da Informação como ação de libertação coletiva na prática dos bibliotecários. Para isso, buscou-se um estudo teórico, cujo desenvolvimento se baseou na idéia de ação comunicativa de Jurgen Habermas, a partir da autorreflexão. Assim, notase que, na prática bibliotecária a Mediação da Informação, prevalece na racionalidade instrumental da técnica e, por esta razão precisa, portanto, percorrer o plano de ações comunicativas e emancipadas. Embora o assunto estudado seja explorado pela literatura, deve-se considerar que seus fundamentos teóricos e práticos ainda não foram projetados criticamente, especialmente ao avaliarem as “novas” relações de debate em seu ambiente e um novo significado nas práticas bibliotecárias.