A network-based positioning method to locate false base stations

In recent years False Base Stations (FBSs) have received increased attention. A False Base Station can perform active or passive attacks against mobile devices or user equipment (UE) to steal private information, such as International Mobile Subscriber Identifier (IMSI), to trace users locations, or to prevent users from getting service from operators. Most of the existing solutions related to FBS have focused on the detection aspects of the false station rather than locating its position. However, once an FBS is detected in a network, discovering its exact location precisely and remotely becomes highly crucial to initiate preventive actions. In this work, we propose a network-based localization method for estimating the exact geographical position of an FBS whose existence is already detected in a cellular network. Our method relies on a comparative pairwise analysis of the Reference Signals Received Power (RSRP) values reported as a standard procedure by the UEs in the vicinity of FBS through their measurement reports. Specifically, for each pair of related measurement reports, we identify a half-plane indicating the probable location of the FBS and then predict the exact location based on the intersection of all obtained half-planes. We have implemented and experimentally evaluated our proposed method in the Network Simulator 3 (ns-3) and showed that it accurately estimates FBS location with meter-level precision under different scenarios in a cellular network

Post-stroke lower urinary system dysfunction and its relation with functional and mental status: a multicenter cross-sectional study

###EgeUn###Background: Review of the literature clearly reveals that little is known about the association between functional and mental status, and Lower Urinary Tract Dysfunction (LUTD) in patients with stroke. Objective: The aim of this study was to assess functional and mental status in stroke patients and to identify possible associations with the prevalence, severity and bother of LUTD. Material and methods: This study was designed as a cross-sectional study and included 260 stroke patients enrolled from six different hospitals in Turkey. The patients were questioned using the Danish Prostatic Symptom Score (DAN-PSS) Questionnaire to evaluate LUTD, and evaluated using the Modified Barthel Index (MBI), Incontinence Quality of Life Questionnaire (I-QoL), and the Mini Mental State Examination (MMSE). Results: At least one LUTD finding was reported in 243 (93.5%) patients; the most commonly encountered complaint in these patients was nocturia (75.8%). The mean MBI, MMSE, and I-QoL scores were found to be significantly lower in LUTD (+) patients compared to LUTD (-) patients (p = 0.000, p = 0.005, and p < 0.01, respectively). Similarly all parameters (MBI, MMSE, and I-QoL scores) assessed were found to be significantly lower for patients with urinary incontinence than those without incontinence (p = 0.000, p = 0.000, and p < 0.01, respectively). Conclusion: LUTD is a common problem in patients with stroke. LUTD is associated with poorer cognitive and functional status and the quality of life in these patients. We, therefore, suggest that bladder dysfunction should not be overlooked during rehabilitation of stroke patients

Familial Mediterranean fever (FMF) in Turkey: results of a nationwide multicenter study

Familial Mediterranean fever (FMF) is an autosomal recessive disease that is prevalent among eastern Mediterranean populations, mainly non-Ashkenazi Jews, Armenians, Turks, and Arabs. Since a large proportion of all the FMF patients in the world live in Turkey, the Turkish FMF Study Group (FMF-TR) was founded to develop a patient registry database and analyze demographic, clinical, and genetic features. The cohort was composed of 2838 patients (mean age, 23.0 +/- 13.33 yr; range, 2-87 yr), with a male:female ratio of 1.2:1. There was a mean period of 6.9 +/- 7.65 years from disease onset to diagnosis; the period was about 2 years shorter for each decade since 1981. Ninety-four percent of patients were living in the central-western parts of the country; however, their familial origins (70% from the central-eastern and Black Sea regions) reflected not only the ongoing east to west migration, but also the historical roots of FMF in Turkey. Patients' clinical features included peritonitis (93.7%), fever (92.5%), arthritis (47.4%), pleuritis (31.2%), myalgia (39.6%), and erysipelas-like erythema (20.9%). Arthritis, arthralgia, myalgia, and erysipelas-like erythema were significantly more frequent (p < 0.001) among patients with disease onset before the age of 18 years. Genetic analysis of 1090 patients revealed that M694V was the most frequent mutation (51.4%), followed by M680I (14.4%) and V726A (8.6%). Patients with the M694V/M694V genotype were found to have an earlier age of onset and higher frequencies of arthritis and arthralgia compared with the other groups (both p < 0.001). In contrast to other reported studies, there was no correlation between amyloidosis and M694V homozygosity in this cohort. However, amyloidosis was still remarkably frequent in our patients (12.9%), and it was prevalent (27.8%) even among the 18 patients with a disease onset after age 40 years. Twenty-two patients (0.8%) had nonamyloid glomerular diseases. The high prevalence of vasculitides (0.9% for polyarteritis nodosa and 2.7% for Henoch-Schonlein purpura) and high frequency of pericarditis (1.4%) were striking findings in the cohort. Phenotype II cases (those patients with amyloidosis as the presenting or only manifestation of disease) were rare (0.3% or less). There was a high rate of a past diagnosis of acute rheumatic fever, which suggested a possible misdiagnosis in children with FMF presenting with recurrent arthritis. To our knowledge, this is the largest series of patients with FMF reported from 1 country. We describe the features of the disease in the Turkish population and show that amyloidosis is still a substantial problem