Formulating layered adjustable autonomy for unmanned aerial vehicles

Purpose - In this paper, we propose a Layered Adjustable Autonomy (LAA) as a dynamically adjustable autonomy model for a multi-agent system. It is mainly used to efficiently manage humans and agents share control of autonomous systems and maintain humans’ global control over the agents. Design/Methodology/Approach - We apply the LAA model in an agent-based autonomous Unmanned Arial Vehicle (UAV) system. The UAV system implementation consists of two parts, software, and hardware. The software part represents the controller and the cognitive and the hardware represents the computing machinery and the actuator of the UAV system. The UAV system performs three experimental scenarios of dance, surveillance and search missions. The selected scenarios demonstrate different behaviors in order to create a suitable test plan and ensure significant results. Findings - The results of the UAV system tests prove that segregating the autonomy of a system as multidimensional and adjustable layers enables humans and/or agents to perform actions in a convenient autonomy levels. Hence, reducing the adjustable autonomy drawbacks of constraining the autonomy of the agents, increasing humans’ workload and exposing the system to disturbances. Originality/value - The application of the LAA model in a UAV manifests the significance of implementing dynamic adjustable autonomy. Assessing the autonomy within three phases of agents run cycle (task-selection, actions-selection, actions-execution) is an original idea that aims to direct agents’ autonomy towards performance competency. The agents’ abilities are well exploited when an incompetent agent switches with a more competent on

Modal Mutu Pendidikan SD Muhammadiyah Condongcatur Yogyakarta

Islamic teachings elaborate on a broad, comprehensive scope, or can maintain relationships with other people. The criteria for the process of human creation is a divine gift regarding the noble mission of humans as caliphate when they are on this earth. Improving the quality of the credibility of SD Muhammadiyah always follows innovating according to the planning of the program form by setting strategic dialogue steps to improve quality. The way in which human resource development is carried out is based on various processes, such as recruitment and placement, welfare, development, career paths, both quality improvement, coaching, monitoring and evaluation of educators and can also be accommodated by education staff

An Efficient Method of Reweighting and Reconstructing Monte Carlo Molecular Simulation Data for Extrapolation to Different Temperature and Density Conditions

AbstractThis paper introduces an efficient technique to generate new molecular simulation Markov chains for different temperature and density conditions, which allow for rapid extrapolation of canonical ensemble averages at a range of temperatures and densities different from the original conditions where a single simulation is conducted. Obtained information from the original simulation are reweighted and even reconstructed in order to extrapolate our knowledge to the new conditions. Our technique allows not only the extrapolation to a new temperature or density, but also the double extrapolation to both new temperature and density. The method was implemented for Lennard-Jones fluid with structureless particles in single-gas phase region. Extrapolation behaviors as functions of extrapolation ranges were studied. Limits of extrapolation ranges showed a remarkable capability especially along isochors where only reweighting is required. Various factors that could affect the limits of extrapolation ranges were investigated and compared. In particular, these limits were shown to be sensitive to the number of particles used and starting point where the simulation was originally conducted

PENGEMBANGAN MEDIA PEMBELAJARAN INTERAKTIF TAGAM BERBASIS ANDROID UNTUK POKOK BAHASAN HUBUNGAN ANTAR SATUAN DI SEKOLAH DASAR

Penelitian ini merupakan penelitian pengembangan, yaitu pengembangan media pembelajaran interaktif tagam berbasis android. Penelitian ini dilaksanakan karena adanya masa pandemi covid-19 yang menyebabkan proses pembelajaran dilaksanakan secara daring sehingga membutuhkan media pembelajaran interaktif guna mendukung proses pembelajaran. Tujuan penelitian ini ialah guna mengetahui kelayakan media pembelajaran interaktif tagam berbasis android, serta mendeskripsikan proses pengembangan media pembelajaran interaktif tagam berbasis android. Jenis penelitian ini adalah penelitian dan pengembangan (R&D) dengan menggunakan model pengembangan ADDIE yaitu Analysis, Design, Development, Implementation, dan Evaluation. Subjek penelitian ini adalah ahli media, ahli materi dan guru. Pada uji coba perorangan terdiri dari 3 peserta didik dan uji coba kelompok kecil terdiri dari 12 peserta didik kelas V SDN Wonokusumo VI/45 Surabaya Tahun Ajaran 2020/2021. Penelitian ini menghasilkan media pembelajaran interaktif yang sangat layak. Hasil penilaian yang diperoleh memenuhi kriteria kelayakan. Penilaian dari ahli materi memperoleh persentase kelayakan sebesar 88,88%, penilaian dari ahli media memperoleh persentase kelayakan sebesar 90%, dan penilaian kelayakan dari guru atau praktisi pendidikan memperoleh persentase kelayakan sebesar 94,9%. Uji coba perorangan memperoleh persentase sebesar 94,9% dan uji coba kelompok kecil mendapatkan persentase kelayakan sebesar 93,95%. Dengan demikian media pembelajaran interaktif tagam berbasis android sangat layak dan sangat layak digunakan dalam pembelajaran pokok bahasan hubungan antar satuan

Limited Invasive Techniques in Management of Sander's Type II, III Calcaneal Fractures

Background: A thorough understanding of the clinical and radiographic anatomy of the calcaneus and its articulations is crucial when attempting less invasive procedures for intraarticular calcaneus fractures.Objective: The aim of this work is to evaluate the functional outcome and to assess the anatomical restoration of the calcaneus with radiographic measurements after percutaneous fixation of Sanders type II and type III calcaneal fractures by K-wires and cannulated screws. Patients and methods: This was a prospective study that is conducted on 23 patients whom were classified as Sanders type II, III Calcaneal fractures. This study was done at Alexandria Police Hospital and Zagazig University Hospital. These patients were followed up for at least 6 months postoperatively. All patients in the study were evaluated including history taking and clinical examination. All patients had preoperative lab investigations and were evaluated radiologically with X-ray calcaneus and CT scan, and were followed up at outpatient clinic twice in the first week then once a week for the next two months.Results: The final results at the end of this study were satisfactory in 91.3% of patients and unsatisfactory in 8.7% of patients. About (81.3%) of the excellent results were obtained in Sanders type II fractures, while 18.7 % of the excellent results were obtained in Sanders type III fractures. Conclusion: Less invasive surgical techniques for treating displaced intraarticular calcaneus fractures have been undertaken in an attempt to reduce complications and improve recovery when surgery is indicated. These emerging techniques may be beneficial in patients with soft-tissue compromise, multiple comorbidities, and displaced intraarticular fractures with minimal comminution

Role of School Principals in Raising Political Awareness of Social Science Teachers in Arab High Schools within the Green Line and its Relationship with Organizational Citizenship Behavior دور مديري المدارس الثانوية في رفع الوعي السياسي لدى معلمي الدراسات الاجتماعية في المدارس العربية داخل الخط الأخضر وعلاقته بسلوك المواطنة التنظيمية لديهم

Abstract: The study aimed to identify the role of school principals in raising political awareness among teachers of social sciences in Arab secondary schools and its relationship to organizational citizenship behavior in order to achieve the objectives of the study and to answer its questions. The correlational descriptive survey methodology was used. The study sample consisted of (351) teachers. The results showed that the role of school principals in raising political awareness from the viewpoint of social sciences teachers in Arab schools within the Green Line was moderate. The results also showed that the level of organizational citizenship behavior among social sciences teachers in Arab secondary schools within the green line were high, and the results showed that there was a statistically significant positive correlation between the role of school principals and the citizenship behavior of social sciences teachers in Arab secondary schools within the green line. ملخص: هدفت الدراسة الكشف عن دور مديري المدارس في رفع الوعي السياسيّ لدى معلمي الدراسات الاجتماعية في المدارس الثانويّة العربيّة وعلاقته بسلوك المواطنة التنظيميّة لتحقيق أهداف الدراسة وللإجابة عن أسئلتها تم استخدام المنهج الوصفي المسحي الارتباطي، اشتملت العينة على (351) معلماً ومعلمة، أظهرت النتائج أن دور مديري المدارس في رفع الوعي السياسيّ من وجهة نظر معلمي الدراسات الاجتماعية في المدارس العربيّة داخل الخط الأخضر كان متوسطا، كما أظهرت النتائج ان مستوى سلوك المواطنة التنظيميّة لدى معلمي الدراسات الاجتماعية في المدارس الثانويّة العربيّة داخل الخط الأخضر كان كبيراً، كما تبين من النتائج وجود علاقة ارتباطية موجبة دالة إحصائياً بين دور مديري المدارس وسلوك المواطنة لدى معلمي الدراسات الاجتماعية في المدارس الثانويّة العربيّة داخل الخط الأخضر

Assessment of left ventricular function by global longitudinal strain in patients with non-ST elevation myocardial infarction: Comparative study with conventional method

Background: Left ventricular ejection fraction (LVEF) is a strong prognostic parameter in patients with heart disease. The assessment of global longitudinal strain (GLS) from speckle-tracking analysis of 2-dimensional echocardiography has become a clinically feasible alternative to LVEF for the measurement of myocardial function.Objective: The aim of the current work was to compare between GLS speckle tracking echocardiography and Simpson’s biplane methods for assessment of left ventricular function in non-STEMI patients.Patients and methods: This study was carried out in Cardiology Department, Faculty of Medicine, Zagazig University on 44 non‐ST‐elevation myocardial infarction (NSTEMI) patients scheduled for assessment of Left ventricular function by GLS and biplane Simpson method.Result: Mean systolic blood pressure was 122.05±18.37 mmHg. No statistically significant difference in systolic blood pressure was found across GLS groups (P= 0.17). Mean diastolic blood pressure was 73.41±12.00 mmHg. No statistically significant difference in diastolic blood pressure was found across GLS groups (P= 0.35). Mean heart rate was 68.84±7.13 bpm, and a statistically significant difference was found in heart rate across GLS groups (P= 0.039).Conclusion: It could be concluded that GLS speckle tracking echocardiography and Simpson’s biplane methods can be used as alternative different parameters for assessment of left ventricular function in non-STEMI patients

Sponge media drying using a swirling fluidized bed dryer

Surface preparation today has seen the introduction of sponge media as an alternative product against the traditionally used abrasive materials. Being soft and elastic, the sponge media reduces air borne emission significantly during surface preparation with capability to be re-used. However the environmental conditions limit the sponge media usage whereby wet surroundings prohibit the re-use of the sponge without being dried properly. This study proposes the swirling fluidized bed dryer as a novel drying technique for sponge media. Batch experiments were conducted to study the bed’s hydrodynamics followed by drying studies for three bed loadings of 0.5 kg, 0.75 kg and 1.0 kg at three drying temperatures of 80°C, 90°C and 100°C. It was found that, minimum fluidization velocities for the wet sponge particles were found to be 1.342, 1.361 and 1.382 m/s with minimum swirling velocities of 1.400, 1.469 and 1.526 m/s. Drying times were recorded between 6 to 16 minutes depending on bed loading and drying temperature. Smaller bed weights exhibits faster drying with constant-rate drying period while higher drying temperature and larger bed load resulted in falling-rate drying period. Thin layer modelling for the falling-rate region indicates that Verma et. al model provides the best fit for the present experimental data with coefficient of determination, R2 = 0.98773, root mean square error, RMSE = 0.05048, residuals = 0.3442 and reduced chi-square, χ2 = 0.00254. The effective diffusivity, Deff, for 0.5 kg bed load was found to be 3.454 x 10-9 m2/s and 1.751 x 10-9 m2/s for 0.75 kg bed load. In conclusion, SFBD was found to be a viable and efficient method in drying of sponge media for various industrial applications particularly surface preparation

An Analysis of the Reality of the Palestinian Press During Its Field Coverage. Sherine Abu Aqleh's Assassination: A Case Study

The aim of this research paper is to clarify the challenges Palestinian media professionals face as a result of their work. It uses the assassination of Sherine Abu Aqleh, an Al-Jazeera correspondent, as a model, and discusses the legal repercussions of the scene where she was assassinated by an Israeli sniper while covering the Jenin camp invasion on Monday, May 11, 2022, and her martyrdom. Qualitative research and semi structured interviews will be used to collect information for this scientific paper. The interview will include open and closed questions that can be analyzed by the journalists accompanied by Sherine Abu Aqleh when she was assassinated. They are Ali Smoudi, Shatha Hanaysha, and Mujahid Al-Saadi. Interviewers' consent will be obtained before recording and analyzing their answers. In addition, the researchers conducted a number of interviews with lawyers and activists from human rights institutions as well as journalists who testified at the United Nations headquarters in Geneva last month

Characterization of alginate–gelatin–cholesteryl ester liquid crystals bioinks for extrusion bioprinting of tissue engineering scaffolds

Tissue engineering (TE) is an innovative approach to tackling many diseases and body parts that need to be replaced by developing artificial tissues and organs. Bioinks play an important role in the success of various TE applications. A bioink refers to a combination of a living cell, biomaterials, and bioactive molecules deposited in a layer-by-layer form to fabricate tissue-like structures. The research on bioink attempts to offer a 3D complex architecture and control cellular behavior that improve cell physical properties and viability. This research proposed a new multi�material bioink based on alginate (A), gelatin (G), and cholesteryl ester liquid crystals (CELC) biomaterials, namely (AGLC) bioinks. The development of AGLC was initiated with the optimization of different concentrations of A and G gels to obtain a printable formulation of AG gels. Subsequently, the influences of different concentrations of CELC with AG gels were investigated by using a microextrusion-based 3D bioprinting system to obtain a printed structure with high shape fidelity and minimum width. The AGLC bioinks were formulated using AG gel with 10% weight/volume (w/v) of A and 50% w/v G (AG10:50) and 1%, 5%, 10%, 20%, and 40% of CELC, respectively. The AGLC bioinks yield a high printability and resolution blend. The printed filament has a minimum width of 1.3 mm at a 1 mL/min extrusion rate when the A equals 10% w/v, G equals 50% w/v, and CELC equals 40% v/v (AGLC40). Polymerization of the AGLC bioinks with calcium (Ca2+) ions shows well-defined and more stable structures in the post-printing process. The physicochemical and viability properties of the AGLC bioinks were examined by FTIR, DSC, contact angle, FESEM, MTT assay, and cell interaction evaluation methods. The FTIR spectra of the AGLC bioinks exhibit a combination of characteristics vibrations of AG10:50 and CELC. The DSC analysis indicates the high thermal stability of the bioinks. Wettability analysis shows a reduction in the water absorption ability of the AGLC bioinks. FESEM analysis indicates that the surface morphologies of the bioinks exhibit varying microstructures. In vitro cytotoxicity by MTT assay shows the ability of the bioinks to support the biological activity of HeLa cells. The AGLC bioinks show average cell viability of 82.36% compared to the control (90%). Furthermore, cultured cells on the surface of AGLC bioinks showed that bioinks provide favorable interfaces for cell attachment