bluuebunny/crossref_metadata_2025 huggingface dataset:
The value of pulmonary artery acceleration time in evaluating pulmonary vascular disease in preterm infants with bronchopulmonary dysplasia Category: Original Research
Authors: Wang Liling , Liu Zhijie , Zhang Fengjuan , Xu Haiyan , Wang Haiyan , Zhao Xueqiang
Published: July 2022

Objectives— Early screening and dynamic monitoring of
pulmonary vascular disease (PVD) in bronchopulmonary dysplasia (BPD)
high-risk infants is of great clinical significance. Pulmonary artery
acceleration time (PAAT) is a reliable and non-invasive method for
assessing PVD in children over 1 year, but to date, few studies have
used PAAT to assess pulmonary hemodynamics of preterm infants,
especially those with BPD. Through dynamic monitoring the main
hemodynamic indicators reflected PVD after birth, this study aimed to
assess the value of PAAT in evaluating early PVD in BPD infants.
Methods— 81 preterm infants at risk of BPD were divided into
BPD and non-BPD groups according to whether BPD occurred. Clinical
characteristics, PAAT, right ventricular ejection time (RVET) and other
main hemodynamic indicators at 4 different time points after birth were
studied and compared. Results— PAAT and PAAT/RVET increased
gradually within 72 hours after birth in the BPD group ( P
< 0.05), but the curve tended to be flat over time after 72
hours( P > 0.05). At PMA32 and 36 weeks, the PAAT
(49.7±4.8 vs.54.8±5.7, P=0.001; 50.0±5.3
vs.57.0±5.3, P=0.001) and PAAT/RVET (0.33 ± 0.04
vs. 0.35 ± 0.03, P=0.001; 0.34 ± 0.03 vs. 0.37 ±
0.04, P = 0.001) in BPD group were significantly lower than those
in the non-BPD group. Conclusions— PAAT and PAAT/RVET in the
BPD group infants showed different change patterns compared to non-BPD
group infants. PAAT can be used as a noninvasive and reliable screening
method for screening and dynamic monitoring of PVD in BPD high-risk
infants.
Cognitive Abilities and Collaboration in Couples in Type 1 Diabetes Management
Authors: Berg Cynthia A. , Suchy Yana , de Grey Robert G. Kent , Allen Nancy A. , Campbell MaryJane S. , Munion Ascher , Butner Jonathan , Helgeson Vicki S.
Published: July 2022

Managing type 1 diabetes involves coordinating complex daily behaviors that may rely on the cognitive abilities of people with diabetes (PWD) and spouses, especially as couples collaborate surrounding diabetes care. The aims of the study were to examine whether 1) the cognitive abilities of PWD and their spouses predicted lower A1C, 2) collaborating with a spouse with higher cognitive abilities was especially beneficial for PWD with lower cognitive abilities, and 3) the benefit of the cognitive abilities of PWD and their spouse occurred through better self-care. Couples (n = 199) were recruited with one member diagnosed with type 1 diabetes (PWD 52% female sex, average age 46.81 years, average duration of diabetes 27 years; spouses 48% female sex; average age 46.40 years). PWD and spouses completed fluid (trail making tests from the Delis-Kaplan Executive Function System) and crystallized (information subtest from the Wechsler Adult Intelligence Scale—4th Edition) ability tests. PWD rated their spouse’s collaboration in diabetes and reported self-care behaviors through surveys. A1C was assessed as a measure of blood glucose through a blood assay. Multiple regressions revealed that spouses’ crystallized ability was the only statistically significant predictor, with higher values associated with lower A1C (t = −2.17, P <0.05). The interaction of crystallized ability of PWD × spouse crystallized ability × collaboration indicated that PWD with lower ability tended to benefit more when they collaborated with a spouse who scored higher in ability (t = −2.21, P <0.05). Mediational analyses indicated that spouses’ crystallized ability was associated with lower A1C through better self-care behaviors of PWD (B = 0.03, SE = 0.01, P <0.01). We conclude that PWD benefit from the cognitive abilities of their spouses through better self-care behaviors that are important for maintaining lower A1C across adulthood.
In vitro EVALUATIONS OF ANTIOXIDANT, ANTIMICROBIAL AND ANTICANCER POTENTIAL OF Phytolacca americana L. (POKEWEED) SEED EXTRACT
Authors: DEMİRKAN Elif , ERTÜRK Elif , YILDIZ Gamze , SEVGİ Tuba , AYBEY Aynur
Published: July 2022

In this study, different parts of Phytolacca americana L. (Pokeweed) fruit from Türkiye were investigated for their antioxidant, antibacterial, antibiofilm and anticancer potentials. The radical scavenging activities, reducing power and total phenolic content were determined to appraise of the antioxidant potentials. The antibacterial and antibiofilm activities of the extracts against Enterococcus faecalis, Yersinia enterocolitica, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Salmonella typhimurium were evaluated by using agar-well diffusion, minimum inhibitory concentration (MIC) and biofilm inhibitory concentration (BIC) assays. In addition of latening the onset of apoptosis depending on dose, the potential of the anti-proliferative effects was investigated on MDA-MB-231 and MCF-7 cells. The highest free radical scavenging activity and phenolic content were found in the seed extract. Seed extract showed the highest inhibition zones and significant antibacterial activity at 2.5-5 mg/mL MIC concentrations against tested bacterial strains. More significantly, seed extract was found effective on inhibition of early phase biofilm formation at 2.5-10 mg/mL. BIC concentrations against tested bacterial strains. Next, the main mechanisms of cell death of the seed extract in MDA-MB-231 and MCF-7 cells were investigated. Accordingly, when apoptosis was evaluated morphologically, late apoptosis was observed in cells that showed both Hoechst 33342 and Propidium Iodide (PI) positivity in a dose-dependent manner. This study showed that P. americana seed extract can contribute to alternative medicine studies and have potential power in pharmaceutical industry.
The effectiveness of using dictogloss as a method to improve students’ listening achievement at MTs Ma’arif 04 Rumbia
Authors:   Universitas Lampung, Ulfa Luluk Nabila , Yufrizal Hery ,   Universitas Lampung, Nurdiana Novita ,   Universitas Lampung
Published: July 2022

The aims of this research are to find out whether there is significant effect of dictogloss method on the students’ listening achievement and to investigate in what part of speech the students get better achievement after learning through dictogloss method. The sample of this research was the first grade that consisted of 23 students. The instrument of this research was listening test. The researcher used paired samples t-test to analyze the data, in which the significant was determined by p<0.05. The result showed that mean score of pretest (24.56) and posttest (55.65) in which t-value>t-table (9.264 > 2.074) or sig p<0.05 (0.000<0.05). Furthermore, part of speech in listening test that improved the most after learning through dictogloss method was verb. As a result, it can be concluded that dictogloss method is effective to improve students’ listening achievement. Dictogloss method can help the students in understanding the text easier, especially in descriptive text. Keyword: Dictogloss method, Listening Comprehension, Descriptive Text
System of Engineering Safety Barriers of the Facilities for Near-Surface Disposal of Radioactive Waste
Authors:   «NO RWM», FSUE, Kuzmin E.V. , Minin A.V. ,   «NO RWM», FSUE, Bamborin M.Yu. ,   «NO RWM», FSUE, Trofimova Yu.V. ,   «NO RWM», FSUE
Published: July 2022

Facilities for near-surface disposal of radioactive waste are very important structures consisting of several safety barriers, and the substantiation and selection of the principal structures of near-surface disposal facility is a complex task that must be solved taking into account the distinctive specifics — the time of their active and passive operation, as well as the period of potential danger of radioactive waste. The paper considers the main approaches to ensuring the long-term safety of near-surface disposal facilities through the use of various engineering safety barriers, measures to protect safety barriers, personnel, the public and the environment. To ensure safety, to prevent the spread of ionizing radiation and radioactive substances from the near-surface disposal facility into the environment, a systematization of safety barriers was carried out to ensure reliable isolation of the placed radioactive waste. Using the experience of building long-term structures, the periods of reliable isolation of the radioactive waste by each of the engineering barriers are indicated. The safety barriers, which are included as the main engineered barriers in the design solutions of the near-surface disposal facilities being created, are consistently considered. Containers are the first engineered barrier. The second barrier is a buffer material based on the natural clays that fills the space between the walls of the modular structures and containers, as well as between the containers themselves. The third barrier is concrete walls, floor slabs and floor slabs of the modular structures of the disposal site. The fourth barrier consists of bentonite mats and a clay castle made of crumpled natural clay. The fifth barrier is a multi-layered covering screen constructed for waterproofing, protection from the atmospheric precipitation, ingress of animals, plant roots and inadvertent human intrusion. The choice of materials for the engineered barriers and the requirements for the characteristics of the barrier are carried out based on the long-term safety assessment calculations, including taking into account the properties of the host rocks.
Reducing the Risks of Cardiovascular Diseases for the Employees at Hazardous Production Facilities of the Oil and Gas Complex
Authors:   RGU of Oil and Gas (NIU) named after I.M. Gubkin, Fomina E.E. , Guskov M.A. ,   RGU of Oil and Gas (NIU) named after I.M. Gubkin, Fomina A.S. ,   RGU of Oil and Gas (NIU) named after I.M. Gubkin, Sadykova I.I. ,   RGU of Oil and Gas (NIU) named after I.M. Gubkin
Published: July 2022

The study was conducted of the risks of cardiovascular diseases for the employees at a hazardous production facility, the main activity of which is the transportation of natural gas through the pipelines and emergency recovery work with an average number of employees of more than 12 500. According to the results of a special assessment of the working conditions, 500 out of 8449 workplaces are classified as harmful working conditions, the main harmful production factor is noise. Statistics of the occupational injuries for 2017–2019, and domestic deaths for 2015–2019 is presented. In 2019, the company achieved the goal of the concept of zero injuries, while more than 60 microtraumas are recorded and analyzed annually. Also, in the company every year on average 20 people die in everyday life over 5 years, of which approximately 50 % are due to the cardiovascular diseases, mainly at the age of 50 years and older. Risk factors: behavioral (unhealthy and unbalanced diet, low physical activity, accumulated fatigue, stress, bad habits); physiological (presence of the chronic diseases, hypertension, thrombogenic factors, inflammation factors, etc.); production (presence of the harmful and dangerous production factors, heavy work shifts); social (globalization, urbanization, population aging, low standard of living, low level of medical care, bad ecology). For assessment of the lifestyle, and identify the risk factors for the cardiovascular diseases, the company analyzes the health status of employees based on the results of mandatory periodic medical examinations, including blood pressure measurement, ECG studies, blood cholesterol levels, questionnaires, and interviews. This analysis allows to divide the employees into three groups: workers with established cardiovascular disease; workers predisposed to cardiovascular diseases; workers with unidentified risk factors for cardiovascular diseases. For each group, the measures are developed to reduce and prevent cardiovascular diseases as part of the improvement of the integrated occupational safety and industrial safety management system.
USING ONLINE PEER REVIEW AS A STRATEGY TO IMPROVE WRITING SKILLS
Authors: Ula Erfa Navadiatul
Published: July 2022

This research was conducted  to investigate the use of online peer review as a strategy to improve writing skills in the revision process. This qualitative study will recruit two peers of a private university in Malang based on two criteria 1) they have passed an academic writing course with an excellent score, and 2) they were students who use online media to conduct peer reviews. Using a semi-structured interview, the students were asked what types of online resources they use to online peer review, and how they do peer review online. The interview data will be analyzed using content analysis To triangulate the data, investigator triangulation will be performed by involving two data analysts. The result of the study were students used WhatsApp and Zoom media to conduct online peer review, and students provide their writing in the form of an online file to the peer for review about grammar, writing effectiveness, and diction errors with several platforms (grammar checker, online dictionary; etc) to assist the revision process.
La actividad industrial de la ciudad de Sevilla, a partir de indicadores fiscales (1476-1513)
Authors: González Arce José Damián
Published: July 2022

Este trabajo utiliza indicadores fiscales de impuestos sobre algunas actividades productivas y sectores de consumo, para elaborar series estadísticas y medir el crecimiento industrial. Es un sistema aproximado e indirecto, pero el único posible para el período. Gracias a ello, por vez primera contamos con un estudio cuantitativo macroeconómico para un territorio castellano bajomedieval. De forma que, mediante varios gráficos, se pueden extraer conclusiones sobre la generación de recursos y la evolución demográfica regional. Y analizar cómo influyeron en ellas aspectos como las guerras, epidemias o hambrunas, pero también los gustos y hábitos de consumo, entre otros que incidieron en las coyunturas. Al margen de los vaivenes en el corto plazo, se observa, además, una tendencia general expansiva, que se compadece con las noticias que se tenían sobre que la ciudad y su renio se convirtieron por estas fechas en los más ricos de Castilla.
La biblioteca de un príncipe humanista: Carlos de Aragón y Navarra, príncipe de Viana
Authors: Miranda Menacho Vera Cruz
Published: July 2022

Estas páginas son el estudio de la biblioteca del príncipe de Viana, tanto a partir del inventario de bienes post mortem, realizado en 1461 en Barcelona, como a través de otras fuentes documentales que permiten completar la información. Nuestro objetivo es analizar los libros que formaron parte de su biblioteca, identificando las obras y sus autores, y entendiendo su composición como fruto de la trayectoria personal y política de su propietario, no solamente su espacio, el conjunto de libros, materias y autores, sino como la representación de la imagen de un saber y un conocimiento propio de los humanistas de la Europa del Cuatrocientos.
Poder regio femenino entre la Orden de San Juan de Jerusalén y Caminos de Santiago: el influjo de la infanta Elvira Alfonso (León y Castilla, siglos XI-XII)
Authors: Tollendal Prudente Luisa
Published: July 2022

Se pretende mostrar, a partir del análisis de la diplomática, el papel que posiblemente desarrolló la infanta Elvira Alfonso (hija natural del rey Alfonso VI) en el temprano establecimiento de los freires hospitalarios en los reinos de León y de Castilla, a comienzos del siglo XII. Se aspira encontrar la conexión entre el patrocinio dinástico de la Orden del Hospital y la promoción de la peregrinación a Santiago de Compostela. Elvira Alfonso participó en la Primera Cruzada y viajó hasta Jerusalén, hecho que debió darle una posición privilegiada para orientar a sus familiares regios hacia la consecución de tales políticas, una vez de vuelta a su tierra natal. A partir de este probable influjo de Elvira, se observa cómo las mujeres de la familia real leonesa – con atención a la reina Urraca I - impulsaron el patrocinio de la Orden Hospitalaria en tierras del norte ibérico, una labor continuada y profundizada por los monarcas que las sucedieron.
«Barregãs e Bastardos»: O Testemunho dos Nobiliários Medievais Portugueses (Séculos XIII e XIV)
Authors: De Sottomayor-Pizarro José Augusto
Published: July 2022

Este texto pretende presentar la barraganería y la bastardía a través de dos fuentes complementarias, por un lado, los nobiliarios medievales portugueses de los siglos XIII y XIV, y, por otro, los libros de registro de la cancillería, donde quedaban guardados los textos de las cartas de legitimación concedidas por los monarcas. Al final, se intenta aportar una dimensión cuantitativa de este fenómeno en el marco de la familia noble medieval portuguesa, entre los siglos XII y XIV.
ESTIMATING Of CO2 CONVERSION IN FALLING FILM REACTOR USING ARTIFICIAL NEURAL NETWORK
Authors: Wiheeb Ahmed
Published: July 2022

This paper presents the development of Artificial Neural Network (ANN) model for absorption process of CO2 gas using monoethanolamine (MEA) as a solvent in a falling film reactor. Although studies on ANN applications in chemical engineering in the literature are more concentrated on utilizing dynamic models, there has been an increasing trend for diverse application of ANN to model steady state systems. The feed-forward artificial neural network was adopted and trained by back-propagation algorithm. In this paper 216 sets of data are used to train and test the network. This study shows that ANN model with one hidden layer and nine neurons in the hidden layer gives a very close estimation of the CO2 conversion and there is high potential for absorption application of ANN model
KERBEROS SECURITY EVALUATION
Authors: Mahdi Hussain
Published: July 2022

Authentication of a person is an important task in many areas of day-to-day life including electronic commerce, system security and access control. We present Kerberos a client\server authentication protocol which can perform a secure communication over unsecured environments (internet). For example an e-bank application the client can log on in domain environment using password (single factor authentication) or a smart card running java card application in combine with PIN and the server is the banking hosted system at the bank. Smart card can enhance the security by storing the cryptographic key to perform dual factor authentication, it also can manage the encryption and decryption of the Kerberos keys on it rather then on the client workstation memory. A common methodology depends on the national standardizations is used to evaluate security of that authentication scenarios of  Kerberos protocol.
EMULATION OF THE MICROPROCESSOR INTEL 80386
Authors: SAMEERA A'AMER ABDUL-KADER
Published: July 2022

Microprocessor simulation is one of the recent applications of computer design. It is used for emulating the microprocessors for some purposes such as; learning microprocessor structure and assembly language in laboratories in universities. In this research simulation for the microprocessor Intel 80386 was suggested, designed and implemented. Implementation was verified for some data transfer instructions like MOV instructions in deferent addressing modes. The designed simulation program was implemented using Visual Basic programming. Examples were tested successfully for some MOV instructions.
اختيار المشروع الأمثل من النواحي الأمنية باستخدام تقنية AHP
Authors: Naji Hafiz
Published: July 2022

لم يغفل التطور العلمي والتكنولوجي الذي يشهده العالم في مختلف المجالات ، مجال امن وحماية المنشات ، فقد انطلق بقوة هائلة وبسرعة مذهلة في تطور هذا المجال وخاصة فيما يخص إنتاج وتوفير العديد من الأجهزة والوسائل لخدمة هذا المجال ، لذلك تتطلب إدارة المشروع من الناحية الأمنية طرق وإمكانيات ذكية ومميزة في اتخاذ القرارات الصحيحة والصائبة ، وقد جاءت تقنية التدرج التحليلي كطريقة اتخاذ القرار التي تسمح في دراسة وبحث المعايير المعقدة في إدارة هذا الجانب من المشاريع .يتناول هذا البحث دراسة لتقنية التدرج التحليلي في المشاريع الإنشائية بصورة عامة والنواحي الأمنية منها بصورة خاصة . كما يتناول البحث التعريف بمفهوم الإدارة الأمنية للمشروع ومتطلباتها والوسائل الأمنية المعتمدة والاعتبارات الواجب اعتمادها في كل وسيلة . اعتمدت هذه الاعتبارات كأساس لتطبيق تقنية التدرج التحليلي في تقييم مشاريع جامعة ديالى من الناحية الأمنية لتحديد المشروع الأمثل من هذه الناحية . ولغرض تحقيق هدف البحث ، فقد تم جمع البيانات الخاصة به من الأدبيات التي تناولت موضوعي التدرج التحليلي والإدارة الأمنية للمشاريع، وأخيرا من المقابلات الشخصية من ذوي الاختصاص من المصممين والمنفذين والمشغلين لهذه المشاريع . أظهرت نتائج تحليل البيانات لأفراد العينة أن معايير السيطرة ،الحماية ، الإنشاء ، العوائق هي أكثر المعايير أهمية لإجراء المقارنات الثنائية بين المشاريع ،وان معياري السيطرة والحماية هي أكثر أهمية من بقية المعايير في هذا النوع من المشاريع . وان مشروع عمادة كلية التربية الأساسية قد حصل على النصيب الأكبر من الأهمية النسبية بالمقارنة مع المشاريع الأخرى . وفي النهاية تم التوصل إلى مجموعة من الاستنتاجات والتوصيات من  بينها عدم وجود تطبيق واضح لمفهوم التدرج التحليلي في قطاع التشييد بسبب عدم وجود إدراك لهذا المفهوم وبشكل خاص في مجال تقييم متطلبات المشاريع من الناحية الأمنية .
MONTE CARLO SIMULATION TO STUDY STREAMER THEORY IN ELECTRONEGATIVE GASES
Authors: Hassan Jasim Mohammed
Published: July 2022

Electron swarm motion across a uniform electric field is calculated and analyzed by a Monte Carlo simulation (MCS) method in the presence of elastic excitation ,ionization and attachment collisions cross-section with the electronegative gas . The calculation is carried out for  a wide range of E/N values from 71 to 1000Td . It is shown that in the case of a steady –state experiment. The motion has been analyzed to give swarm parameters for (drift velocity , number density , mean energy ,and effective ionization coefficient).

           The first aim of the present paper is to calculate the swarm characteristic at 71 Td by MCS and to discuss the difficulty of calculation al low E/N . The second aim is to calculate the swarm parameter for experimental  conditions, i.e. the steady state Townsend ( SST ).

           The present results are in excellent a agreement with those deduced by the Boltzmann equation analysis for steady- state and pulse Townsend experiments.
تأثير طرق القطع اللاتقليدية على دقة الأبعاد وطبيعة الأسطح المثقبة
Authors: أحمد شهاب أحمد
Published: July 2022

أوضحت نتائج البحث أن زيادة قيمة التيار المستخدم بطريقة التثقيب بالتفريغ الكهربائي أدت إلى زيادة معدل الإزالة بالإضافة إلى مقدار الخشونة . كما وان زيادة عمق التثقيب يؤدي إلى زيادة في مخروطية الثقب، إضافة إلى زيادة في معدل تأكل قطب التشغيل. أما زيادة طاقة شعاع الليزر عن قيمة معينة فقد أدت إلى زيادة قطر وعمق الثقب المنتج وتقليل مخروطيته ، بالإضافة إلى زيادة في معدل الإزالة ومقدار الخشونة.

في حين عند التشغيل بدرجات الحرارة العالية فان خشونة السطح تقل مع سرعة القطع وان مقدار البلى لأداة القطع ينخفض مع زيادة درجة حرارة التشغيل. أما تأثير معدل التغذية فأن زيادته تؤدي إلى انخفاض في مقدار البلى لأداة القطع ولحد معين ثم يبدأ مقدار السوفان بالزيادة مع زيادة معدلات التغذية عند ارتفاع درجة حرارة التشغيل. ولكن مقدار الخشونة ينخفض مع زيادة معدل التغذية عند ارتفاع درجة حرارة التشغيل , وبالنسبة إلى تأثير عمق القطع فهو قليل عند التشغيل بدرجات الحرارة العالية عند مقارنته مع معدلات التغذية بنفس التشغيل حيث يزداد مقدار البلى والخشونة السطحية مع زيادة عمق القطع وان مقدار البلى وقيم الخشونة السطحية تقل مع زيادة حرارة التشغيل ,خصوصا عند المقارنة مع التشغيل بدرجات حرارة الغرفة
DYNAMIC SYSTEM IDENTIFICATION USING TIME-DELAY FEEDFORWARD NEURAL NETWORKS: APPLICATION TO DC MOTOR
Authors: Ali Khudhair Mutlag
Published: July 2022

The universal function approximation capabilities of multilayer feedforward neural networks make it a popular choice for modeling dynamic systems. In this paper, identification of dynamic system using time-delay feedforward neural networks with application to DC motor as a case study has been developed. The developed neural network model is a three layer network with nonlinear (sigmoid) activation functions in the hidden layer and linear output layer with input-output delays. Simulation results showed that the neural networks are promising tool for dynamic system identification
STATE SOME MECHANICAL PROPERTIES FOR Al- ALLOY WELDED BY SEAM WELDING TECHNIQUE
Authors: Zeidan Lutfi
Published: July 2022

The aim of  this paper was perpetrated lap joint  welding samples welded by seam welding method ,2014 heat treatable aluminum alloy ,the paper studied some groups at different variable welding ,welding time was studied  at electrode pressure 1,1.5 KN with thickness 1.5 mm and another group at 2 mm .after welding process shear strength ,Vickers hardness were tested at different variables.

The paper stated the best shearing strength at 1.5mm thickness with 45 KA welding current at 1.5 KN electrode pressure.  Increase 0.5 mm in thickness lead to decrease 20% of shearing strength.
معالجة التشققات للمقاطع النحاسية باستخدام المعاملة الحرارية
Authors: مصطفى احمد رجب النجار
Published: July 2022

أوضحت نَتائِجَ هذا البحثِ بأنّ المعاَملة الحراريةَ لسبيكة النحاس-قصدير المستخدمة في البحث بدرجة (900)º م لمدة (15) دقيقة ، مع التقسية  بالماءِ, ومن ثم إعادة التسخين بدرجة (600)ºم لمدة (3) ساعات, أعطت أفضل الخصائص الميكانيكيةِ ،المتضمنة على, مقاومة الشدّ، المتانة، قابلية التشكيل, بسبب البنية المجهرية الدقيقة والتوزيع المتجانس للأطوار ضمن أرضية التركيب, مما يقود إلى تأثير قوي على الخواص الميكانيكية
NON-LINEAR ANALYSIS OF CONTINUOUS COMPOSITE CONCRETE–STEEL BEAMS UNDER CYCLIC LOADINGS
Authors: Ali Laftah Abbas
Published: July 2022

Non-linear analysis of continuous composite concrete–steel beams under cyclic loadings has been investigated in this paper. A three-dimensional finite element analysis (FE) ANSYS computer program(ANSYS version 9.0) was conducted to investigate the nonlinear behaviour of this beam up to failure through the prediction of the values of slip, deflection along the spans of the composite beam for different number of loading cycles up to one million cycles of the load of range (52%of the ultimate load of the beam). The results obtained from analyzing a continuous composite concrete-steel beam under cyclic loadings show good agreement with available experimental results and other available analytical results. A parametric study is also conducted in this paper to study the influence of some parameters such as the number of loading cycles, and the amount of load ratio on the values of slip and deflection. This parametric study shows that as the number of loading cycles increased, slip and deflection values along the composite beam will increased due to reduction in strength of all components of the composite beam, and the absolute values of maximum slip and maximum deflection will reduce as the load ratio changes from negative to positive signs .
توظيف الصورة الرمزية في العمارة – دراسة تحليلية لمشاريع المرحلة المنتهية للمدارس المعمارية – كأنموذج
Authors: عدي عباس عبود
Published: July 2022

العمارة احد النصوص المعروضة امام المتلقي والمعمار على حد سواء فالاول يحاول ترجمة النص المعماري في حين يحاول الاخر وضع النص بصيغة قابلة للتفسير وفق عدد من المؤشرات ذات الصفة العلاماتية مما يحتم على المعمار وضع علامات التأشير ضمن الفعل المعماري، أذ أن أهم معيار لدراسة الظاهرة المعمارية ( الفعل المعماري ) هو مدى إسهام تلك الظاهرة أو الفعل المعماري بذاته أو مع سياقه في النظام الرمزي للمجتمع القاريء والمنتج له في نفس الوقت. العمارة من المبتكرات الإنسانية التي يعاد إكتشافها في كل زمان ومكان ودراستها برؤيوية تتنوع بتنوع القاريء لها وبالإعتماد على ما تحمله من علامات قابلة للتفسير من قبل مجتمعها سواء أكان هذا المجتمع متزامن مع الفعل المعماري أو لاحقا له فالقراءة تتحول بتحول القاريء من زمن إلى زمن لاحق. ان دراسة العلاماتية وصورها المستحضرة في الفعل المعماري يوفر قاعدة معلوماتية حول كيفية فهم الفاعل للفعل المعماري العلامة الواجب حضورها في ذلك الفعل. أصطلح البحث على أربع علامات دلالية يتعامل معها المعمار، وهي:

العلامة الرمزية, العلامة الإشاراتية, العلامة المؤشراتية, العلامة الايقونية.

أما كيفية استحضارها والتعامل معها فهذا مرتبط بطبيعة رؤيا المعمار والظروف التصميمة المحيطة بالفعل المعماري من جهة وخصوصية الفعل من ناحية وظيفته وموقعه في سياقه الحضري والمجتمعي.    

عمدت الدراسة الى تطبيق مستويات العلامة الدلالية بمستويين : يخص الاول منهما مشاريع المرحلة المنتهية لقسم الهندسة المعمارية في الجامعة التكنولوجية بصورة عامة ، لتحديد مدى الاعتماد على العلامة الدلالية في خلق النتاج المعماري . اما المستوى الثاني فيتعلق بتطبيق خصوصية وجوانب العلامة الدلالية بانواعها (الرمزية والاشاراتية والمؤشراتية والايقونية ) وفق خصوصية كل منها على مشاريع منتخبة من ذات المرحلة الدراسية ، لتحديد ابعاد وجوانب كل علامة دلالية ومدى استثمارها في خلق النتاج المعماري وفق رؤية تحليلية احصائية
IMAGE COMPRESSION BASED ON LOSSLESS WAVELET WITH HYBEID 2D_DECOMPOSIYION
Authors: Saad Qassim Fleh
Published: July 2022

This paper introduces a proposed method for hybrid 2D wavelet transform, and applies this method on the field of lossless image compression method. Wavelets in 2D or higher dimensions  are often generated by a decomposition scheme from 1D wavelets. There are two decomposition schemes; the standard (rectangular) and the nonstandard (square) decomposition. A hybrid 2D wavelet transform is a result of mixing these two decompositions in order to  improve the compression performance and compression ratio
ON-LINE HANDWRITTEN ARABIC CHARACTER RECOGNITION BASED ON GENETIC ALGORITHM
Authors: Haithem Abd Al-RaheemTaha
Published: July 2022

On-line Arabic handwritten character recognition is one of the most challenging problems in pattern recognition field. By now, printed Arabic character recognition and on-line Arabic handwritten recognition has been gradually practical, while offline Arabic handwritten character recognition is still considered as "The hardest problem to conquer" in this field due to its own complexity. Recently, it becomes a hot topic with the release of database, which is the first text-level database and is concerned about the area of realistic Arabic handwritten character recognition.

At the realistic Arabic handwritten text recognition and explore two aspects of the problem. Firstly, a system based on segmentation-recognition integrated framework was developed for Arabic handwriting recognition. Secondly, the parameters of embedded classifier initialed at character-level training were discriminatively re-trained at string level.

            The segmentation-recognition integrated framework runs as follows: the written character is first over-segmented into primitive segments, and then the consecutive segments are combined into candidate patterns. The embedded classifier is used to classify all the candidate patterns in segmentation lattice. According to Genetic Algorithm (Crossover, mutation, and population), the system outputs the optimal path in segmentation-recognition lattice, which is the final recognition result. The embedded classifier is first trained at character level on isolated character and then the parameters are updated at string level on string samples.
MECHANICAL AND PHYSICAL PROPERTIES OF HIGH DENSITY POLYETHYLENE FILLED WITH CARBON BLACK AND TITANIUM DIOXIDE
Authors: Zanaib.Y.Shnean
Published: July 2022

In this work composite material composed of high density polyethylene and inorganic pigment (carbon black and titanium dioxide) was prepared. Different amounts of carbon black and titanium dioxide (2– 15) wt% were added as filler. The preparation of filled and unfilled (High density polyethylene /Carbon black and titanium dioxide) composite was carried out using a single – screw extruder operated at a temperature of (170 – 190)oC.The incorporation was performed in a single screw extruder and sheets specimens were obtained by hot compression from extruded materials.

Many mechanical and physical tests were used to determine the properties of the prepared composite material which involved compression strength, impact strength and modulus of elasticity for all the preparation composite. An untreated HDPE sheet is used for the purpose of comparison. In this study, the influence of addition of Carbon black and titanium dioxide, on the mechanical ,electrical and thermal a properties test of high-density polyethylene (HDPE). The results show that the use of pigments, carbon black and TiO2 in appropriate concentration ratios give a reliable improvement in the mechanical properties. The weight fraction of the carbon blacks and titanium dioxide ranged from 0.0 up to 15 wt % with the high density polyethylene. By discharging a high voltage through the composite it was found that the resistivity of the composite decreased. Carbon black and titanium dioxide –high-density polyethylene composites show significant differences from the neat high-density polyethylene measured in the frequency range.

It was found that the carbon black and titanium dioxide/ high-density polyethylene composites have better thermal properties than the neat high-density polyethylene.
التخطيط للمشاريع الانشائية
Authors: محمد مصلح سلمان
Published: July 2022

ان الطبيعة الهندسية للمشاريع الانشائية توجب على الإدارات وضع الخطط اللازمة للسيطرة على فعاليات المشروع، لذلك يعتبر التخطيط من الموضوعات المهمة التي تهتم بها الشركات الانشائية لإنجاز المشروع من خلال السيطرة على الزمن والكلفة والنوعية. يهدف البحث الى التعرف الميداني على واقع حال أنظمة التخطيط المعتمدة من قبل الشركات الإنشائية وتحديد نمط للخطوات المتبعة لإعداد البرامج للمشاريع المختلفة. لقد تضمن البحث الجانب النظري الذي تم فيه التعرف على مفاهيم التخطيط وأهميته واهدافه وأساليب السيطرة على المشروع الإنشائي. كما تضمن الجانب العملي المسح الميداني من خلال إعداد إستمارة الاستبيان التي شملت أسئلة تغطي متطلبات المحاور الرئيسية لعملية التخطيط الإنشائي. ولقد بين التحليل الاحصائي لنتائج الاستبيان الميداني قصور نظره إدارات المشاريع الى كثير من متطلبات التخطيط كنظام إداري متكامل يشمل جميع الانشطة والفعاليات الأساسية للمشروع كما تم التوصل الى مجموعة من الاستنتاجات والتوصيات التي تبين اهمية السيطرة على التخطيط في المشاريع الإنشائية.
DESIGN & EVOLUTION OF A STEGANOGRAPHY SYSTEM FOR SPEECH SIGNAL BY SLANTLET TRANSFOR
Authors: Tarik Z.Ismaeel
Published: July 2022

In this paper a Stegan graphic system was proposed to hide up a secret speech signal in a cover speech signal, using Slant let transform. The combination of a Stegan graphy and cryptography is used to increase the level of security and to make the system more rigid and complex to be defeated by attackers. In cryptography the secret speech signal is converted from 1-D to 2-D signal, divided into blocks each of size (8*8) sampled and then the samples are converted to the binary form, after that, columns transposition is applied to get the ciphered signal. This cipher signal will be the next stage, we are driving the key which is used in cyphering process from the slantlet coefficients.

       The proposed system increases the imperceptibility property because it is based on replacing each secret  bit with one of the host coefficient bit (the host coefficient may be the same as secret bit). So that changing of host signal due to embedding process was decrease d but the dimension of the cover signal will be a tradeoff between the imperceptibility

and the capacity of the system. Imperceptibility and security test s are implemented to check the system. Peak signal to Noise Ratio(PSNR) & Correlation(Corr.) between cover signal & the stego - signal are carried out to evaluate the perform ance of the proposed algorithm
DISTRIBUTION OF SHEAR STRESSES IN ISOLATED SQUARE CONCRETE FOUNDATION HAVING SPOTS OF VERY WEAK SOILS
Authors: Abdul-Razzaq Khattab
Published: July 2022

In the usual methodology for soil investigation, boreholes locations are selected in site, machinery extract, with due care, soil samples (or specimens) and tested, and then soil strength parameters for site are calculated. The soil report may contain some of the field tests, the SPT for instance, as well. The procedure is to pass this information to the structural engineer who, in turn, may design the structure. In soil investigation principle, the small soil specimen extracted from the soil strata have complete representation of the soil body underneath the footing. In soil mechanics theory the soil is well known to be nonhomogeneous and nonisotropic. This, eventually, means that soil properties and strength parameters change not due to location only but due to change of direction as well. This situation imposes the fact that the principle of representing the whole body of soil with a small sample is practically incorrect. The principle is assumed correct only as much as the soil is more and more isotropic and homogeneous. Therefore, it is in reality not uncommon for cavities to be present in soils body due to many reasons. If those cavities are detected before footing construction, then it is assumed that there is no serious problem. On the other hand, if it is not detected, the situation imposes a serious problem to the footing and structure depending on size and location of cavity.

     This study deals with cavity presence directly underneath a single separated footing of proposed multi-storey building. Location and size of cavity are changed and a finite element (FE) analysis is run for each individual case. The subgrade soil is assumed medium-dense sand with a modulus of subgrade reaction 35000 kN/cu.m. Other than cavity location, the subgrade is assumed to be homogeneous and isotropic, i.e. have same material and strength properties. Suitable graphs are used to illustrate the stresses in footing. The study, however, take into account the shear stresses in 3D only (a shear-care study) in concrete. The foundation concrete is assumed to have low compressive strength such as 20 MPa. Other properties of concrete are assumed program’s default.
تأثير زاوية ونصف قطر الحز على معامل حساسية الحز للصلب المتوسط الكربون تحت تأثير الاجهادات الاستاتيكية والديناميكية
Authors: مصطفى احمد رجب
Published: July 2022

تعتبر ممركزات الإجهاد حرجة لمعظم أجزاء المقاطع الهندسية ،حيث ان معظم حالات الفشل تعود الى تلك الظاهرة . يتناول هذا البحث دراسة تأثير كل من زواية ونصف قطر جذر الحز على معامل حساسية الحز للصلب المتوسط الكربون تحت تأثير اختبارات الشد وكلال الانحناء لعينات دائرية المقطع . أوضحت نتائج البحث ان زيادة زاوية ونصف قطر جذر الحز تؤدي الى زيادة في حدود مقاومة الشد ، وبالتالي فأن تأثير تركيز الإجهاد يقل مع زيادة زاوية ونصف قطر جذر الحز . حساسية الحز تكون متغيرة ما يبن معامل تركيز الإجهاد النظري (Kt) الإجهاد الإنهياري (Kf) ، حيث وجد ان معامل تركيز الإجهاد ألانهياري (Kf) يكون اقل من معامل تركيز الإجهاد النظري (Kt).
دراسة تحليلية لتقييم صلاحية ٳستهلاك مياه شرب محطة التحرير في ديالى
Authors: مضر عبد الوهاب راغب
Published: July 2022

تم ٳجراء هذه الدراسة لتحديد صلاحية ٳستهلاك مياه شرب محطة التحرير في بعقوبة / ديالى, من خلال تحديد تراكيز العناصر اللاعضوية وبعض العناصر السمية الثقيلة في مياه الشرب الناتجة من المحطة, خلال الفترة المحددة من (تشرين الثاني 2010 حتى حزيران 2011), وتم ٳجراء الفحوصات الكيمياوية والفيزياوية المطلوبة والتي تضمنت درجة الحرارة والرقم الهيدروجيني والتوصيلية الكهربائية وكمية الأملاح الذائبة والعسرة الكلية والكالسيوم والمغنسيوم والكلورايد والكبريتات والصوديوم والبوتاسيوم والألمنيويم والكادميوم والنحاس والحديد والنيكل والنترات والرصاص. النتائج النهائية لهذه الدراسة أقرت أن معظم المحددات لمياه شرب المحطة كانت ضمن المقاييس العالمية لمنظمة الصحة العالمية عدا وجود ٳرتفاع ملحوظ في تراكيز بعض العناصر الثقيلة وهي الكادميوم والنيكل خلال فترة الفحص,  حيث بلغ معدل القراءات الشهرية للكادميوم (0.016 ppm) والنيكل (0.096 ppm) على التوالي, أي بزيادة تفوق النسبة (100%) عن المحددات البيئية القياسية.

     يعزو الباحث ذلك ٳلى المخلفات والتجاوزات التي تم تسجيلها ضمن فترة الفحص على الشركة التي تقوم ببناء بناية المستشفى الجديد في التحرير, ٳضافة ٳلى الٳستخدام الغير مدروس للأسمدة الزراعية لرفع سقف الٳنتاج الزراعي وكثرة تجاوز بعض المواطنين على مجرى النهر, وقد وتم وضع بعض الحلول والتوصيات المناسبة. تبين كذلك أن للمحطة كفاءة مقبولة لعزل عكارة الماء الخام وٳنعدام الكفاءة نسبة الى باقي المحددات الكيمياوية.
KEWENANGAN PARTAI POLITIK DALAM PENARIKAN DUKUNGAN BAKAL PASANGAN CALON KEPALA DAERAH
Authors: Mutawalli Muhammad , Moenta Andi Pangerang , Hasrul Muhammad
Published: July 2022

This study aims to explain the political party authority in withdrawing support for the regional head candidate in elections, as well as providing an understanding of sanctions that targeted political parties who withdrawn or revoked their political stance by applicable regulations. This study using a legal perspective on the authority of political parties in withdrawing support and Authority Theory, Democracy Theory, Rule of Law Theory, Decision Making Theory, and Sanction Theory as supported theories. The formulation of all arguments, facts, and theoretical frameworks in this study uses empirical normative legal research methods. Data obtained and collected through books, journals, theses, and recent dissertations, interviews, and articles related to the problem. The research method in this study combines elements of normative and empirical law and data. This research is qualitative research used in library observation. This research concludes that the authority of political parties regarding the withdrawal of support for a prospective regional head candidate pair explained in three stages or processes, including the first stage is before registering candidates to the KPU, the second stage is the stage after registering with KPU, and last is the stage after the determination of a prospective pair of candidates by the KPU. Among the existing stages, there is a full space for political parties to participate and room for the KPU to organize regional head elections. So concerning the withdrawal of support, political parties are not allowed arbitrarily to withdraw or vice versa regarding their support for prospective pairs of candidates. Referring to the applicable regulations, the forms of sanctions that can be given to political parties that withdraw or revoke a candidate pair are criminal sanctions and administrative sanctions. Where administrative sanctions are considered to be less firm against political parties, in contrast to criminal sanctions (ultimum remedium) or as a last resort that is much firmer but only aimed at the leaders or leaders of the heads of the central political parties who deliberately make withdrawals. Keyword: Political Parties, Withdrawal of Support, Prospective Regional Head Candidates.
Penambahan Polen Aren Sebagai Pakan Lebah untuk Meningkatkan Bobot Koloni Lebah Madu Trigona sp.
Authors: Wiryawan IKetut Gede , Erwan Erwan , Juniarti Lilis
Published: July 2022

The aim of this study was to determine the effect of feed supplement in the form of sugar palm pollen on the increase in colony weight of Trigona sp. The study was conducted in Lembah Sari Village, Batulayar District, West Lombok Regency, which lasted for 4 weeks from May 2020-June 2020. Ten honey bee colonies of Trigona sp. were randomly assigned to two treatment groups with five replications each according to a completely randomized design. The treatment without palm pollen was placed differently with a distance of ±600 meters from the treatment using palm pollen and the distance between replicates was ±1 meter. The stages of the research include making the hive, selecting a colony from glodok, moving the colony to the hive, placing the research hive, and placing the palm pollen. The variables observed included the number of pollen cells and colony weights. The results showed that mean values for the number of pollen cells treated without and with palm pollen treatment from weeks 1-4 were 6,2±0,45, 7,0±0,71, 9,0±0,71, 12,2±0,84 and 6,4±0,55, 8,4±1,14, 11,8±0,84, and 15,4±1,14 respectively. While the colony weight for those with or without supplement were 0,15±0,04, 0,29±0,05, 0,44±0,05, 0,64±0,06 and 0,14±0,01, 0,39±0,09, 0,53±0,03, and 0,80±0,08. The average number of pollen formed and the colony weight for those given supplement was significantly higher than those without feed supplement. Thise results indicate the important of providing feed supplement in order to sustain productivity of Trigona sp.
CORRELATION OF THE HEADROOM SUPERVISION AND THE ELECTRONIC NURSING DOCUMENTATION METHOD IN THE ERA OF COVID-19
Authors: Putri Dila Sari , Febriani Nelly
Published: July 2022

The application of electronic nursing documentation makes it difficult for nurses to adapt to the system. Supervision carried out by the head of the room can affect the quality of electronic nursing documentation. The purpose of this study was to identify the correlation between the supervision of the head of the room and the implementation of nursing care using the Electronic Nursing Documentation. This study uses a descriptive correlation research design using a cross sectional approach. The sampling technique used was purposive sampling with a total sample of 129 nurses. Collecting data using a questionnaire and analyzed using the Chi-Square test. The results of statistical tests showed that there was a significant relationship supervision (p=0.000) with electronic nursing documentation. The recommendation of this study is that hospital management is expected to be able to periodically supervise electronic nursing documentation, even in the current state of the Covid-19 pandemic.Keywords: Electronic Nursing Documentation, Nurse, Supervision
Pemodelan Jumlah Kematian Ibu dan Anak di Sulawesi Selatan Menggunakan Regresi Poisson Bivariat
Authors: Rasyid Adiatma , Ibnas Risnawati , Alda Wahyuni
Published: July 2022

Angka kematian ibu dan bayi menjadi salah satu indikator dalam menilai derajat kesehatan masyarakat. Kematian ibu dan bayi merupakan dua hal yang berkaitan karena selama masa kehamilan gizi yang diperoleh janin disalurkan dari tubuh sang ibu, sehingga kondisi ibu akan berpengaruh terhadap bayi yang akan dilahirkan. Dalam penelitian ini dilakukan analisis terhadap faktor-faktor yang mempengaruhi jumlah kematian ibu dan bayi di Provinsi Sulawesi Selatan tahun 2019 menggunakan analisis regresi poisson bivariat. Analisis ini memiliki tiga model dengan nilai kovarians yang berbeda. Hasil penelitian menunjukkan model dengan nilai kovarians berupa persamaan adalah model terbaik dengan nilai AIC sebesar 336,2771. Pada model terbaik, hanya variabel persentase bayi diberi ASI eksklusif yang berpengaruh signifikan terhadap jumlah kematian ibu. Sedangkan, variabel prediktor yang berpengaruh signifikan terhadap jumlah kematian bayi adalah persentase ibu hamil yang melaksanakan K1, persentase ibu hamil yang melaksanakan K4, persentase penanganan komplikasi kebidanan, dan persentase bayi diberi ASI eksklusif.
PENGUKURAN MUTU HIGHER ORDER THINKING SKILL (HOTS) DALAM PENUGASAN BERBASIS PROYEK TUGAS BESAR STUDIO PERANCANGAN ARSITEKTUR PADA MASA PANDEMI COVID-19
Authors: Ibrahim Rahmani Ahmad
Published: July 2022

Tuntutan mahasiswa berfikir dalam kerangka Higher Order Thinking Skill (HOTS) menjadi tantangan tersendiri dalam pengembangan model perkuliahan di perguruan tinggi, sehingga meskipun dalam kondisi terbatas (kondisi pandemi), proses penilaian perkuliahan juga tetap harus memenuhi standar mutu yang baik. Penelitian ini bertujuan untuk mengidentifikasi jenis penugasan berbasis proyek yang memenuhi kriteria HOTS dan mengukur tingkat keberhasilan mutu penugasan dengan pendekatan penilaian secara autentik. Pendekatan mix method diambil untuk melaksanakan penelitian dalam 2 tahap, yakni tahapan pertama dengan mengintrepretasikan masing-masing penugasan mata kuliah Asas dan Studio Perancangan Arsitektur dalam perspektif kriteria HOTS, lalu pada tahap kedua menganalisis jenis penugasan dengan penilaian autentik dari mahasiswa tentang kemampuan apa saja yang diperoleh setelah mengikuti perkuliahan tersebut. Hasil penelitian menujukkan jenis penugasan precedent study, site research, program ruang, dan transformasi bentuk menjadi jenis penugasan yang dinilai memenuhi kriteria HOTS dan dapat memberikan kemampuan menciptakan ide-ide perancangan yang baru kepada mahasiswa yang bersumber dari analisa dan kemampuan berfikir kritis terhadap kondisi tapak, kebutuhan ruang, dan konsepsi bentuk yang ingin ditampilkan.