28 research outputs found
Road accident analysis in Yemen : the identification of shortcomings in road accident data, data adjustment, cost and development of road fatality model
No full textThe true extent of the road accident problem in Yemen is questionable. Some agencies and citizens believe that the safety situation in Yemen is very critical while others disagree with this belief. Both sides however, agree that the road accident problem in Yemen is such that it requires considerable attention. Since Yemen
has no history in road safety research and since there is no reliable road accident data in the country, making final judgements on the situation is difficult unless supported by adequate research.
The aim of the present research is to provide a better understanding of the road accident problem in the Yemen.
This can be made by investigation of the real dimensions of the road accident problem. This includes the
identification of the shortcomings in road accident data, the cost of road accidents and modelling road accident fatalities
SHORTCOMINGS IN ROAD ACCIDENT DATA IN DEVELOPING COUNTRIES, IDENTIFICATION AND CORRECTION: A CASE STUDY
No full textThis paper reports on some aspects of the findings of a recent piece of research into road traffic accidents in Yemen. The aim of the research was to provide a better understanding of road accident problems in Yemen by investigating its real dimensions. This includes the identification of the shortcomings in road accident data and to develop a method that can be adopted to adjust (correct) the official data.Two field surveys were employed to check the shortcomings in the official records. The main findings obtained are presented as follows:
•The actual size of the road accident problem in Yemen is much greater than it appears in the official figures. In 1993, the registered accidents accounted for only about 13.3% of the estimated accidents and injuries accounted for only about 30% of the estimated injuries.•The registered fatalities account for only about 48% of the actual number of fatalities using the 30 days definition. The 30 days definition for road accident fatalities is not adopted in Yemen and the relevant agencies are not implementing this definition properly.•Methods for adjusting road accident data were adopted in this study. It is believed that this method can adjust the road accident data with an acceptable degree of satisfaction.It is hoped that the findings of this research will help both researchers in their future work and decision makers in the field of road safety to encourage suitable safety programmes to be adopted which are consistent with the actual size of the problem. Knowledge of the true picture of the road accident problem will be useful for the purpose of negotiating adequate funding for road safety activities.Estimating the actual percentage of unreported data in road accidents and casualties is very useful for any further research in road accidents and safety in Yemen. It will also help in dealing with official data and results from previous studies
Novel CO2 Separation Membranes
No full textUsing membranes for CO2 capture has gained recent prominence in the global scientific community due to its lower capital cost and a quicker separation performance than the conventional separation methods. The membrane process features desirable properties, like compactness, energy efficiency, and environmental friendliness. Various polymeric and inorganic materials have been tested both as unique ingredients and blends to form CO2 separation membranes with a focus on increasing the performance but have had varying rates of success. For commercial viability, the membrane sector requires new techniques and testing materials to lower the cost of CO2 capture. Recently, thermally rearranged polymers, intrinsic microporous polymers, ionic liquid inclusion as fillers, and binary fillers have all emerged as novel trends, focusing on enhancing the working efficiency and sustainability of the membranes. This chapter explores the most recent advances in membrane technology and its future prospects as a sustainable solu ion towards carbon dioxide capture. This Page is compulsory Book Title – Sustainable Carbon Capture: Technologies and Applications Chapter Author(s) – Asif Jamil, Department of Chemical Polymer and Composite Material Engineering, University of Engineering and Technology (New Campus), Lahore, Pakistan, [email protected] Muhammad Latif, Institute of Energy and Environmental Engineering, University of the Punjab, 54590, Lahore, Pakistan, [email protected] Alamin Idris Abdulgadir, Department of Engineering and Chemical Sciences, Karlstad University, SE-651 88 Karlstad, Sweden, [email protected] Danial Qadir, Centre for Sustainable Engineering, Teesside University, Middlesbrough, United Kingdom, [email protected] Hafiz Abdul Mannan, Institute of Polymer and Textile Engineering, University of the Punjab, 54590, Lahore, Pakistan, [email protected]</p
Peranan Mediator dalam Proses Penyelesaian Perselisihan Hubungan Industrial (Studi Kasus Dinas Tenaga Kerja Provinsi Sumatera Utara)
No full textDinas Tenaga Kerja Provinsi Sumatera Utara sebagai lembaga pemerintah yang
menangani langsung masalah hubungan industrial. Penelitian ini bertujuan untuk
mengetahui bagaimana Peranan Mediator dalam proses penyelesaian perselisihan
hubungan industrial, selain itu penulis juga ingin mengetahui bagaimana kendala-kendala
dalam proses penyelesaian perselisihan hubungan kerja. Teknik penelitian
yang digunakan adalah metode penelitian kualitatif dengan wawancara langsung,
observasi dan dokumentasi yang terkait dengan penelitian. Dari teknik penelitian
ini diperoleh informan, yang terdiri dari Kepala Bidang Hubungan Industrial Dan
Kepala Seksi Bidang Hubungan Industrial Dan Mediator Dinas Tenaga Kerja.
Berdasarkan penelitian yang dilakukan, maka didapat beberapa temuan bahwa
Pejabat Fungsional Dinas Tenaga Kerja Provinsi Sumatera adalah Mediator yang
memiliki peranan dalam melakukan pembinaan tentang hubungan
industrial, melakukan pengembangan hubungan industrial, pengembangan ini
merupakan bimbingan teknis kepada pekerja dan pengusaha dimana mediator
berperan sebagai narasumber. Kendala dalam Proses Penyelesaian Perselisihan
Hubungan Industrial yaitu perselisihan yang tidak dapat terselesaikan oleh
Mediator merupakan kendala bagi mediator tersebut.The North Sumatra Provincial Manpower Office as a government agency that
deals directly with industrial relations issues. This study aims to find out how the
role of the Mediator in the process of resolving industrial relations disputes, in
addition the author also wants to know how the obstacles in the process of
resolving labor relations disputes. The research technique used is qualitative
research methods with direct interviews, observations and documentation related
to research. From this research technique obtained by informants, consisting of
the Head of Industrial Relations and Head of Section for Industrial Relations and
Mediators of the Manpower Office. Based on the research conducted, it was found several findings that the Functional Officials of the Sumatra Provincial
Manpower Office are mediators who have a role in conducting guidance on
industrial relations, carrying out industrial relations development, this
development is technical guidance to workers and employers where the mediator
acts as a resource. Constraints in the Industrial Relations Dispute Settlement
Process, namely disputes that cannot be resolved by the Mediator are obstacles
for the mediator
Modeling and Analyzing the Influence of Fear on the Harvested Modified Leslie-Gower Model
No full textتم اقتراح ودراسة نموذج لزلي كور المحور للفريسة والمفترس والمتضمن دالة الاستجابة الوظيفية لبدنكتـن ديانجلـز. الغــرض مـــــن الدراسة هو اختبار تأثيرات كل من الخوف والحصاد الثنائي ذو الجهد الثابت على السلوك الديناميكي للنظام. الخواص النوعية للنموذج والمتضمنـــة الاستقرارية المحليـــة لنقاط التوازن ,الاصرار, الاستقرارية الشاملة اختبرت. تم دراسة تحليل التشعب المحلي. وقد لوحظ أن النظام يظهر تشعب العقدة السرج عند نقطة توازن البقاء بينما يحدث التشعب الحرج عند نقطة التوازن الحدودي. بالإضافة إلى ذلك ، تم تحديد المتطلبات الأساسية لوجود تشعب هوبف. واخــيرا باستخدام برنامج الماثلاب تم تنفيذ المحاكات العددية للنظام للتحقق من صلاحية النتائج النظرية وتصور ديناميكيات النظام.A modified Leslie-Gower predator-prey model with a Beddington-DeAngelis functional response is proposed and studied. The purpose is to examine the effects of fear and quadratic fixed effort harvesting on the system's dynamic behavior. The model's qualitative properties, such as local equilibria stability, permanence, and global stability, are examined. The analysis of local bifurcation has been studied. It is discovered that the system experiences a saddle-node bifurcation at the survival equilibrium point whereas a transcritical bifurcation occurs at the boundary equilibrium point. Additionally established are the prerequisites for Hopf bifurcation existence. Finally, using MATLAB, a numerical investigation is conducted to verify the validity of the theoretical analysis and visualize the model dynamics.
Modeling and Analysis of the Influence of Fear on the Harvested Modified Leslie–Gower Model Involving Nonlinear Prey Refuge
No full textUnderstanding the effects of fear, quadratic fixed effort harvesting, and predator-dependent refuge are essential topics in ecology. Accordingly, a modified Leslie–Gower prey–predator model incorporating these biological factors is mathematically modeled using the Beddington–DeAngelis type of functional response to describe the predation processes. The model’s qualitative features are investigated, including local equilibria stability, permanence, and global stability. Bifurcation analysis is carried out on the temporal model to identify local bifurcations such as transcritical, saddle-node, and Hopf bifurcation. A comprehensive numerical inquiry is carried out using MATLAB to verify the obtained theoretical findings and understand the effects of varying the system’s parameters on their dynamical behavior. It is observed that the existence of these factors makes the system’s dynamic behavior richer, so that it involves bi-stable behavior
Molecular testing approaches in thyroid cancer diagnosis
No full textThyroid cancer (TC) is the most common endocrine malignancy worldwide, with an annual incidence of around 300,000 cases. In recent decades, the incidence of TC in many countries, including Saudi Arabia, has increased significantly. Genomics has allowed multiple mutations to be examined simultaneously across multiple genes, providing a detailed genomic profile for a given tumor. It is understood from a molecular perspective that different signaling pathways may have genetic abnormalities as the primary factors in thyroid tumorigenesis. While there is still early progress in the usage and standardization of targeted next-generation sequencing (NGS) in TC, a major ongoing study to distinguish malignant from benign thyroid nodules from fine-needle aspiration (FNA) has shown promising results that can prevent unnecessary surgery, based on NGS analyses of mutations and gene fusions associated with most TC. The differential diagnosis and malignancy risk stratification of TC require multidisciplinary skills and experience of both ultrasound and the FNA and molecular analysis. The most common TC mutations are point mutations in the BRAF and the chromosome rearrangements of RET/papillary TCs. The transition mechanisms tend to be linked to specific etiological features, which are very crucial while deciding the treatment protocol. On the other hand, FNA cytology has an intrinsic drawback. The findings of infinite cytology cannot differentiate some types of TC, such as follicular adenomas, thyroid follicular carcinomas, or papillary thyroid follicular. Nevertheless, accumulating evidence indicates that molecular diagnostic approaches can overcome these limitations. In this review, we present an updated summary, which focuses primarily on molecular alterations in the tumorigenesis and biomarker investigations of TC. [JBCGenetics 2020; 3(2.000): 77-83
Development of A Controller Board For Biologically Inspired Robot
No full textPIC-based controller board is expected to be the basic platform with adequate
1/Os for the functioning of autonomous mobile robot. The purpose of this project is to
develop a controller board for biologically inspired robot. This project focuses on
dividing the five categories which are currently being placed in a board, into five
different boards which are power, communication, microcontroller, inputs, and
outputs. The circuits are design using Protel, an electronic design software that bring
together the traditionally separate disciplines of board design, programmable
hardware design and software development. The author started this project with
literature review to get some knowledge and continue with designing the circuits.
Next, the author proceeds with set up the components fabricate them and lastly, test
the circuits. At the end, this project will produce the most suitable controller board
that can be applied to biologically inspired robot
Study the Dynamic Behavior of Rotor Supported on a Worn Journal Bearings
No full textIn this paper, the effect of wear in the fluid film journal bearings on the dynamic behavior of rotor bearing system has been studied depending on the analytical driven of dynamic stiffness and damping coefficients of worn journal bearing. The finite element method was used to modeling rotor bearing system. The unbalance response, critical speed and natural frequency of rotor bearing system have been studied to determine the changes in these parameters due to wear. MATLAB software was used to find the analytical values of dynamic coefficients of journal bearing. The results of rotor mounted on fluid film journal bearings showed that the wear in journal bearing increases the amplitude of unbalance response and decrease critical speed, stability and the natural frequencies
Mesoporous carbon synthesized from different pore sizes of SBA-15 for high density electrode supercapacitor application
No full text
