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Listing 61 - 20 of 1962 results.

Technogenic Transformations of Sea Coasts on the Example of the Baltic Sea

Research Article
Author(s): N.A. Bogdanov, A.N. Paranina
Journal: International Journal of Geography and Geology

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Abstract
Natural and technogenic factors of violation of natural development of the Liepaja sandy rerash in Southeast Baltic are considered. Along coast for many years there has been a stream of substance and energy, unidirectional to the North. At the beginning of the 20th century after the reconstruction of the Russian port of Libava and lengthening of piers for more than 2 km, a stop of sea deposits along the coast appeared. It caused catastrophic local washout of the coast and bottom. In result, territorial losses, beach titanium-zirconium rerash, different types of pollution appeared. By a research it was established: 1. Rate of abrasion (20th century the coast receded to 200 m); 2. Formation and dynamics of the centers of concentration of heavy minerals, is defined amount of the useful ore minerals in a productive size of beach sands (0,2-0,25 mm, an ilmenite, a magnetite, zircon, rutile, a monocyte, leucoxene; 74% or 1523 kg/m3); 3. Major factors of change of a condition of coast and bottom of the sea. Also an assessment of consequences is given to events of World War II and on the Chernobyl NPP. Illustrations of the article show localization of concentrates of heavy minerals in a ledge of washout of the coast and on the beach, and also structure of mean annual coastal streams of substance and wave energy in technogenic morpholytho-dynamic anomaly at the port of Liepaja.
Contribution/ Originality


Energy & Environmental Sciences » International Journal of Geography and Geology » Month: 02-2017 Issue: 2

Gaseous Air Quality Indicators along Traffic Routes in Greater Freetown, Sierra Leone

Research Article
Author(s): Eldred Tunde Taylor, Alie Dukuray Jalloh, Haddijatou Jallow
Journal: International Journal of Geography and Geology

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Abstract
Urban air pollution is increasingly getting attention in developing countries in recent years. It was against this backdrop that this piece of work examined three indices of air pollution along a single carriage road (Kissy Road) and dual carriage road (Wilkinson Road) on either direction. Brief monitoring spell of nitrogen dioxide (NO2); sulphur dioxide (SO2) and carbon monoxide (CO) were made between August 2015 and September 2015 using the Drager X am 5000 realtime monitor for the different gases. Diurnal monitoring was made in the morning, afternoon and evening periods representing peak and off peak periods. Results indicated higher levels of pollution at Kissy Road relative to Wilkinson Road. Considerable variation were also observed among the pollutants for the two sites and the hourly average values revealed levels that are within ambient air quality standards except for SO2. Field observations revealed poorly maintained vehicles, human behavioral pattern, frequent traffic jams were attributed to the observed values.
Contribution/ Originality


Energy & Environmental Sciences » International Journal of Geography and Geology » Month: 02-2017 Issue: 2

Interdisciplinary Studies of Ancient and the Most Ancient Heritage Sites in the Geography of Culture

Research Article
Author(s): A. Paranina, Al. Grigoryev
Journal: International Journal of Geography and Geology

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Abstract
Ancient and the most ancient heritage sites are revered landscapes or their components (rock sculptures, geoglyphs, sacred hills, trees, aquatic complexes and other objects of natural, anthropogenic and mixed origin), which are usually associated with folk traditions and legends. Authors of the article relate inclusion of such objects in the cultural landscape to prehistoric times (the Stone Age and earlier), and as the main primary function allocate astronomical orientation in space-time. The article shows examples of possible instrumental use of well-known and respected sites on the example of the earth's surface arched sculptures located in different regions of the world. As a result of studies carried out on the basis of maps, satellite images, photos, published descriptions, the authors conclude that most of the objects served as elements of information support systems, were included into the ancient local and regional navigation network and represent key parts of the organization of geo-cultural space, that was the objective basis of their sacralization.
Contribution/ Originality
The author's concept of navigation model operation of the world opens new opportunities of reconstruction of primary rational purpose of ancient objects of cultural heritage. It is shown that the sacral sense and an esthetics of objects are bound to their informational (instrumental) function in a life support system.
Energy & Environmental Sciences » International Journal of Geography and Geology » Month: 03-2017 Issue: 3

Challenges of Enforcement of Forestry Legislation in Taraba State, Nigeria

Research Article
Author(s): Ahmed, Y.M., Oruonye, E.D.
Journal: International Journal of Geography and Geology

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Abstract
Forests are essential resources for human survival and well-being. Within developing countries, millions of extremely poor people depend on forest resources for their livelihoods and security. The forest resources of Taraba State has witnessed high timber and fuelwood exploitation, bush burning, expansion of farmlands and grazing activities. Despite the existence of forest legislation in the state, illegal logging and indiscriminate forest resource exploitation has continued to increase at alarming rate. This makes it imperative to reappraise the forestry legislation in the state and the challenges of effective enforcement of these legislations. Data were generated from secondary materials, personal observation and interviews with officials of the Department of Forestry. The study findings shows that with increase in population, people need to expand their settlements and require more lands to cultivate in order to meet increasing food requirement. This leads to encroachment into forestry reserve. Poor logistics and weak institutional framework hampers the capacity of the forestry officials to enforce forestry legislation. This has resulted in the depletion of Forest resources particularly timber and woody plant resources. Some of the problems includes lack of political will on the part of government, underfunding, lack of or dilapidated office/accommodation, inadequate manpower, lack of equipment, lack of capacity building, Government preference and emphasis on revenue generation as against biodiversity conservation, Conspiracy of forestry officers, village heads and chiefs with merchant timber loggers, lack of effective supervision, coordination and enforcement of forest legislations. The study recommends the need for the government to be more proactive on the issues of enforcement of forestry legislation.
Contribution/ Originality
This study has contributed to the ongoing discussion on the challenges of effective enforcement of forestry legislation in Nigeria as a means of protecting forest and wildlife resources.
Energy & Environmental Sciences » International Journal of Geography and Geology » Month: 03-2017 Issue: 3

A Research on the Implementation of an ICT-Based Entry and Exit Control System to Prevent Hospital Infection

Research Article
Author(s): Hyuk Ho, Wan Chol Ho, Bong Gyou Lee
Journal: International Journal of Management and Sustainability

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Abstract
Recently as contagious diseases such as SARS and MERS etc. have been widely spread across the globe, there is an increased emphasis on the importance of infection management. As hospital infection has been pointed out as a critical issue factor, the need to implement a disease control system in order to control infected patients is becoming necessary. Because hospital systems are information dense systems, utilizing ICT (Information and Communication Technology) and convergence technologies such as RFID (Radio Frequency Identification), Smart Devices, and LBS (Location Based Service) etc. are being proposed as the main methods to implement this system. But because previous research combining hospital data and the area of IT convergence, mainly conducted research with the objective of OA (Office automation) and MIS (Management Information System), there is a limitation of this previous research to be applied to infectious diseases and disease management. To address this, through in-depth interview with professionals, the entry routes of diseases into hospitals were examined and a method to prevent this was proposed in this research. The results of this research confirmed that to prevent diseases from entering a hospital, the most important factor was to increase the access layers of entrance of a hospital to control points of contact. Based on these results, an ICT technology that could be implemented in layers was proposed. It is expected that the results of this research will be helpful to managers and staff of hospital organizations that need to implement control systems to prevent contagious disease infection in hospitals.
Contribution/ Originality
This paper’s primary contribution is to help effectively prevent contagious disease spread by the combination of ICT and administration system of disease.  This study uses an expert interview to investigate key issues.
Business & Management » International Journal of Management and Sustainability » Month: 11-2016 Issue: 11

Benefits and Risks of Satisficing Levels for Input and Output Quantities in Efficiency Analyses from a Corporate Social Responsibility Perspective

Research Article
Author(s): Malte L. Peters, Stephan Zelewski
Journal: International Journal of Management and Sustainability

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Abstract
In efficiency analyses it is being regularly insinuated that it is desirable to realize a maximum ratio between the produced outputs and the used inputs. According to the concept of satisficing, however, activities can be assumed to be satisfactory if they meet a specific aspiration level. The concept of satisficing has been incorporated into efficiency analysis techniques through satisficing levels. In this paper, benefits and risks are being discussed that result from considering satisficing levels in efficiency analyses from the perspective of Corporate Social Responsibility.
Contribution/ Originality
The present study is one of very few studies which discuss the application of satisficing levels for input and output quantities in efficiency analyses. The study adopts the comprehensive view of Corporate Social Responsibility in order to analyze the benefits as well as the risks of satisficing levels.

Business & Management » International Journal of Management and Sustainability » Month: 12-2016 Issue: 12

Optimal Solution of Balanced and Unbalanced Fuzzy Transportation Problem Using Hexagonal Fuzzy Numbers

Research Article
Author(s): Kirtiwant P. Ghadle, Priyanka A. Pathade
Journal: International Journal of Mathematical Research

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Abstract
A fuzzy transportation problem (FTP) includes cost, supply and demand of transportation problems. Its numbers are fuzzy numbers. Fuzzy transportation problem works to reduce transportation cost of some commodities through a capacitate network. Present research paper points out a technique with an alpha cut, optimal solution for solving transportation problem. We suggest a technique to find the fuzzy optimal solution on scales of transportation problem and propose a new hexagonal representation of fuzzy numbers. In general, the comparison of balanced fuzzy transportation problem (BFTP) and unbalanced fuzzy transportation problem (UFTP) shows that the optimal transportation cost of UFTP is less than BFTP.
Contribution/ Originality
This study contributes in networking for transportation. This study uses new estimation methodology. This study originates optimal solution and comparison between BFTP and UFTP. This study investigated comparatively. This paper contributes the first logical analysis that is minimizes or maximizes objective solution is an optimal solution in hexagonal fuzzy numbers.
Arts and Education » International Journal of Mathematical Research » Month: 02-2016 Issue: 2

MHD Flow of a Nanofluid at the Forward Stagnation Point of an Infinite Permeable Wall with a Convective Boundary Condition

Research Article
Author(s): Siti Hidayah Muhad Saleh, Norihan Md Arifin, Roslinda Mohd Nazar, Ioan Pop
Journal: International Journal of Mathematical Research

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Abstract
The steady magnetohydrodynamic (MHD) flow of a nanofluid at the forward stagnation point of an infinite permeable wall is investigated in this study. A mathematical model has been constructed and the governing partial differential equations are converted into ordinary differential equations by similarity transformation. The similarity equations are solved numerically by a shooting technique. Results for the surface shear stresses, surface heat transfer, and velocity, nanoparticle fraction and temperature profiles are presented in tables and in some graphs. Effects of the magnetic parameter  , constant mass flux   Biot number  , Brownion  motion parameter  thermophoresis parameter   and Lewis number   are examined. The present results are compared with previously available numerical results obtained using other methods of solution, and they are found to be in good agreement.
Contribution/ Originality
This study documents important features of MHD stagnation point flow with the effect of convective boundary condition also suction and injection. The paper's contribution is finding that the development of skin friction, heat flux and mass flux, with the velocity, temperature and nanoparticle fraction profiles, in tables and graphs.
Arts and Education » International Journal of Mathematical Research » Month: 02-2016 Issue: 2

Dx-Schemes and Jets in Conformal Gravity Using Integral Transforms

Research Article
Author(s): Francisco Bulnes, Sergei Fominko
Journal: International Journal of Mathematical Research

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Abstract
A  scheme is a scheme equipped with a flat connection over a smooth scheme on a base field. The flat connection equipment is a characterization of this scheme to construct through isomorphisms between commutative algebras and formal moduli problems the conformal images of the space-time that are solutions in conformal field theory. If are considered the  schemes and their particular tools, the jets, these determine conformal blocks of space-time pieces that are invariant under conformal transformations. These conformal block of space-time pieces determine a homogeneous degree factor that characterizes the solutions in a complex Riemannian model of the space-time of the field equations to certain tensors of the Weyl curvature. Finally, is demonstrated that the algebra belonging to the  schemes to the mentioned formal moduli problem is the image under a generalized Penrose transform that in the conformal context of many pieces of the space-time, has a structure as objects in commutative rings of CAlgk each one.
Contribution/ Originality


Arts and Education » International Journal of Mathematical Research » Month: 02-2016 Issue: 2

Multi-Order Fractional Mathieu Equation with External Multi-Periodic Excitation

Research Article
Author(s): Joshua Ikechukwu Nwamba
Journal: International Journal of Mathematical Research

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Abstract
This paper presents an investigation of the behavior of the multi-order fractional differential equation (MFDE). We derive expressions for the transition curves separating regions of stability from instability for the MFDE generally and the particular case K=2. Employing the harmonic balance technique, we obtained approximate expressions for the n=1 and n=2   transition curves of the MFDE and particularly for the case k=2. We also obtained an approximate analytical solution to the multi-order fractionally damped and forced Duffing-Mathieu equation as well as some special cases computationally using the Homotopy Perturbation Method (HPM).
Contribution/ Originality


Arts and Education » International Journal of Mathematical Research » Month: 02-2016 Issue: 2

Consistency of a Mixture Model of Two Different Distributions Approach to the Analysis of Buying Behaviour Data

Research Article
Author(s): Akomolafe Abayomi. A
Journal: International Journal of Mathematical Research

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Abstract
A four-parameter probability distribution, which includes a wide variety of curve shapes, is presented. Because of the flexibility, generality, and simplicity of the distribution, it is useful in the representation of data when the underlying model is unknown. Further important applications of the distribution include the modeling and subsequent generation of random variates for simulation studies and Monte Carlo sampling studies of the robustness of statistical procedures. This research centered on combining these two distributions that will simultaneously capture the rate of occurrence of a phenomenon, especially buying behaviour and the actual performance of that phenomenon as well as tracking and forecasting future purchasing pattern based the data. Further important applications of the distribution include the modeling and subsequent generation of random variates for simulation studies of the robustness of statistical procedures. To do this, specification of the hybrid model named Exponential- Gamma mixture model is given and followed by its derivation. The concluding part of the paper depicts an example of the areas of its application.
Contribution/ Originality
This study contributes to the existing literature by combining exponential-gamma mixture as a hybrid model to see its rate of tracking and forecasting purchasing pattern. This is carried out by using our newly arrived formula in analyzing both the real life and simulated data in other to ascertain the uniqueness of combined probability distribution in forecasting future customer buying behavior data for producers effective planning and administration.
Arts and Education » International Journal of Mathematical Research » Month: 02-2016 Issue: 2

On the Numerical Solution of Two Dimensional Schrodinger Equation

Research Article
Author(s): Murat SUBASI, Seda Igret ARAZ, Hakki GUNGOR
Journal: International Journal of Mathematical Research

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Abstract
This paper includes a MAPLE® code giving numerical solution of two dimensional Schrödinger equation in a functional space. The Galerkin method has been used to get the approximate solution. The results have been examined with numerical examples.
Contribution/ Originality
This study is one of very few studies which have investigated to obtain an efficient computation tool for numerical examinations of two dimensional Schrödinger Equation.
Arts and Education » International Journal of Mathematical Research » Month: 01-2017 Issue: 1

Serum Lipid Profile and Leptin Levels in Asthmatic Libyan Children

Research Article
Author(s):
Journal: International Journal of Medical and Health Sciences Research

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Abstract
Aim:To study lipid profile and leptin levels in non-obese Libyan children with asthma.. Materials and Methods:70 Libyan children from Pediatrics Department, Faculty of Medicine, Benghazi University, Benghazi, Libya were included for the present study (from 2013 to 2014). Group I formed the normal control group (N: 30 Children) and  Group II is 40  Libyan children with asthma. Their age group varied from 4 to 12 years old. Serum lipid profile and leptin were measured by routine standard methods. Results and discussion: The Libyan children with asthma showed an increase in serum total cholesterol, LDL cholesterol, VLDL cholesterol, HDL cholesterol and triglycerides. Serum Leptin levels did not show marked changes between the two groups. The presence of hypercholesterolemia could be a triggering factor for generation of proinflammatory response in these children. Though leptin levels did not show marked response further studies may be necessary to study the role of leptin in obese asthmatic Libyan children.
Contribution/ Originality
This paper tries to bring out the relationship between serum leptin and lipid levels in non-obese asthmatic Libyan children and relate it to serum leptin level.
Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 08-2016 Issue: 8

Profile of Physiotherapist Educators in Anglophone West African Countries: A Cross-Sectional Study

Research Article
Author(s): Joseph Balogun, Chidozie Mbada, Adetutu Balogun, Ajediran Bello, Udoka Okafor
Journal: International Journal of Medical and Health Sciences Research

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Abstract
Background: In the last two decades, physiotherapy profession in many countries has transitioned their entry-level education to a Master’s or doctoral degree levels. Given these changes, there is a new need to discern the profile of physiotherapist educators in different countries.  Objectives: This cross-sectional study was designed to investigate the profile of the physiotherapist lecturers from Anglophone West African countries and to compare the data with their USA counterparts. Methods: The Head of Department of all the physiotherapy programs in West African universities (N = 14) completed a questionnaire that sought information on the University’s debut date and ownership, faculty gender, educational qualification and academic rank. Results: The vast majority (93%) of the physiotherapy programs surveyed are located in public universities. There were 126 lecturers employed in the programs surveyed (average of 9 lecturers per program). In Nigeria, 72% of the lecturers were men, but in Ghana there was an equal (50:50) split between men and women. Fifty-nine percent (59%) of the lecturers in Nigeria had a Ph.D. and 32% were with MS degree. Thirty-four percent (34%) were a Senior lecturer, 19% Lecturer I, 10% Associate Professor/Reader and 10% Professor. More Nigerian lecturers attained higher (p<.05) educational qualification and academic rank than their Ghanaian peers. Conclusions: In Nigeria, the physiotherapy faculty workforce is dominated by men. The educational qualification and academic rank of the faculty in Nigeria is at par with their counterparts from the USA. The findings in this study have implication for faculty exchange/employment, and program development in West Africa.
Contribution/ Originality
This comparative study is the first empirically-based investigation of the physiotherapist lecturers from Anglophone West African countries.
Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 09-2016 Issue: 9

A Rare Histological Entity- Oral Fibrolipoma

Research Article
Author(s): Priyanka Debta, F.M. Debta, Ruchi Bhuyan, Saswati Siddhartha, Prashant Kumar Goyal, Sandeep Mohanty
Journal: International Journal of Medical and Health Sciences Research

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Abstract
Among lipoma of oral cavity, fibrolipoma is one of the rare histopathological variant. Intraoral lipomas are rare lesions which may be discovered during routine dental examinations since they present as slow growing, painless and asymptomatic masses. For definite diagnosis histopathological examination plays a significant role in providing successful treatment and preventing any malignant transformation. Prognosis is generally good as recurrence is very rare. Here we present a case of oral fibrolipoma of buccal mucosa.
Contribution/ Originality
This case report is one of the rare presentation of lipoma. So more cases should be documented to make dental professionals aware of its features.
Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 10-2016 Issue: 10

The Superinfection of Dermoid Cysts in Nigeria

Research Article
Author(s): Wilson Onuigbo, Timothy Nwabunike, Joseph Ojukwu
Journal: International Journal of Medical and Health Sciences Research

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Abstract
Mature cystic teratoma of the ovary may be complicated by torsion, rupture, and malignant change, but is rarely complicated by infection. Here we report two cases. One was associated with subumbilical hernia operation, and the other followed appendectomy. In all probability, the complication was due to nosocomial infection in this developing community. This is of forensic importance.
Contribution/ Originality
TN and WO operated. WO took care of the literature.
Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 11-2016 Issue: 11

Empirical and Practical Implementation Methodology for Clinical Integration of E-Health Iot Technology

Research Article
Author(s): Abel Garai
Journal: International Journal of Medical and Health Sciences Research

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Abstract
This paper structures empirical and practical implementation methodologies for clinical integration of eHealth IoT smart device technology embedded in Cloud service architecture. The results and findings of this two-year research program are summarized from mathematical, system architectural and software engineering perspective. The research takes place in the European Union, in Hungary. The program is the manifestation of the trilateral industry-university collaboration of the University of Debrecen Faculty of Informatics, T-Systems Healthcare Competence Center Central and Eastern Europe and Semmelweis University 2nd Pediatric Clinic Department of Pulmonology. The paper presents the mathematical model for the system architecture optimization. Selected system-architectural solution plans are mapped into directed graphs and converted into adjacency and availability matrices for optimization. Adequate technologies are collected and identified for the research based on industry megatrends. The experiment establishes multidirectional interoperability among eHealth smart devices, telemedicine instruments and clinical information systems. The Open Telemedicine Interoperability Hub, interoperability core module, was developed and embedded into Cloud service architecture. This module transposes and transmits the captured bio-sensory data stream from the eHealth IoT smart-devices and from the telemedicine instrument into the clinical information system. Dominant international healthcare interoperability standards are reviewed and selected for the research. The research program defined different interoperability levels and mapped these against the open systems interconnection model layers. The international interoperability standard, Health Level Seven, was selected for the research. The research explicitly tested interoperability among eHealth consumer electronic sensor-enabled smart-device, spirometer telemedicine instrument and cloud-based hospital information test system.  The research proved that universal interoperability between IoT eHealth smart devices and clinical information system technology is from technical perspective absolutely possible. The paper describes the lessons learned, drawbacks and achievements of this research program. An insight is also given into the forthcoming research phase.
Contribution/ Originality
The paper contributes the first logical analysis for clinical integration of the eHealth IoT technology. This study uses new determination method for mathematically optimized healthcare service architecture. The research originates new mathematic formula for healthcare systems integration. The paper’s primary contribution is validating the empirical results in real clinical environment.
Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 12-2016 Issue: 12

The Right to Dignity and Consensus in the Psychiatric Health Treatment

Research Article
Author(s): Milena Marinic
Journal: International Journal of Medical and Health Sciences Research

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Abstract
Theoretical frameworks: Health workers in practice obtain the informed consent of the patient where there is an invasion of privacy. Health data are processed without consent, health treatment is carried out without informed consent, and is taken to the patient the possibility of an appeal, does not receive information about what to do and where to seek help, if necessary. Methods: Based on the long-term observation of conduct of healthcare workers, the analysis of legal acts and synthesis of statutory provisions for informed consent based arguments. Results Health workers against health interventions with greater impact on privacy and the integrity of the body does not obtain informed consent, offer a preprinted form. The patient is given an explanation focus, which is the duty doctor. Interpretation duty is not subject recording in health documentation which makes it impossible to trace back. Discussions Health professionals legislature requires compliance with legal rules, education in terms of knowledge of the law, it does not reach a satisfactory level. Health workers do not know the laws, and the patient's rights not exercised. In order to ensure the legal documentation is necessary to inform all health professionals with the laws and knowledge documentation.
Contribution/ Originality


Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 01-2017 Issue: 1

Profile of Patients Visiting a Tertiary Eye Hospital and their Perception Regarding Barrier for Eye Care Services in the Western Saudi Arabia

Research Article
Author(s): Moustafa Magliyah, Ali Alsaedi, Nawwaf Alqahtani, Mohammed Almalki, Adel Alharthi, Weam Qutub, Rajiv Khandekar
Journal: International Journal of Medical and Health Sciences Research

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Abstract
Introduction: King Abdullah Medical City (KAMC) is a tertiary health care hospital in western Saudi Arabia. We present the profile of eye patients visiting this institution and their perceived barriers for the access to eye care. Methodology: This case series type of study was conducted between January and June 2014. Close-ended questions were used to collect the responses of patients. Results: Our series had 165 eye patients. The proportion of male and female population in the study area was 57:43. The sex ratio of eye patient was 59:41. Sixty patients (37%) needed more than one-hour car-drive to reach hospital. Majority of eye patients were referred from Al-Noor specialist hospital 53(32%) and Hiraa General Hospital 40 (24%) of Makkah. Conclusion: Eye patients of KAMC reside mainly in Makkah. Female gender was not while distance was a barrier for accessing tertiary eye care. The workload in eye unit of KAMC was low.
Contribution/ Originality
This study documents that there are barriers to access Tertiary Eye care in Western Saudi Arabia.
Medical Sciences » International Journal of Medical and Health Sciences Research » Month: 01-2017 Issue: 1

Multi-User Searchable Encryption Scheme with User Revocation

Research Article
Author(s): Chia-Chi Wu, Iuon-Chang Lin, Ya-Hui Liu
Journal: International Journal of Natural Sciences Research

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Abstract
We improve the previous method to add the function of user revocation in searchable encryption scheme. When document owner doesn’t want to share someone he had shared, he can revoke the user who can’t retrieve the specific document. More importantly, the revocation process must not affect other authorized users, the scheme has to keep a low maintenance cost.
Contribution/ Originality
This study contributes in the existing literature are to provide a searchable keyword encryption scheme and the document owner can dynamically authorize a user to retrieve documents or revoke the authorization. The maintenance cost of the revocation process is low.
Engineering » International Journal of Natural Sciences Research » Month: 04-2016 Issue: 4