scholarly journals Subiculum neurons map the current axis of travel

2016 ◽  
Vol 20 (2) ◽  
pp. 170-172 ◽  
Author(s):  
Jacob M Olson ◽  
Kanyanat Tongprasearth ◽  
Douglas A Nitz
Keyword(s):  
2021 ◽  
Vol 111 (05) ◽  
pp. 309-313
Author(s):  
Christian Brecher ◽  
Tiandong Xi ◽  
Igor Medeiros Benincá ◽  
Sebastian Kehne ◽  
Marcel Fey

Numerische Steuerungen für Werkzeugmaschinen erfassen eine erhebliche Menge an Sensordaten für die Achsregelung. Diese liefern nicht nur Informationen über die aktuellen Achspositionen oder die Ströme, sondern können mithilfe von Modellen auch für das Monitoring von anderen Prozessgrößen verwendet werden. In diesem Beitrag wird ein Machine-Learning-Verfahren zur Überwachung von Werkzeugverschleiß untersucht, welches allein auf maschinen-internen Daten basiert.   Numerical controls for machine tools acquire a considerable amount of sensor data for axis control. This information, such as the current axis position or the motor currents, can be used for monitoring other process variables with the aid of models. This article investigates a machine learning method for monitoring tool wear in machine tools, based on machine-internal data only.


2007 ◽  
Vol 19 (6) ◽  
pp. 357-361 ◽  
Author(s):  
Arianna Goracci ◽  
Mirko Martinucci ◽  
Anastassia Kaperoni ◽  
Andrea Fagiolini ◽  
Chiara Sbaragli ◽  
...  

Objective:This study investigates the relationship between subthreshold obsessive-compulsive disorder (OCD) and quality of life (QoL) in a sample from the Italian general population.Methods:A sample of 202 psychiatrically healthy (defined as absence of current axis I and axis II disorders) subjects was recruited by word of mouth from the residential population in the Siena, Salerno and Milano municipalities (Italy). All study subjects completed the Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q) and the Questionnaire for Obsessive-Compulsive Spectrum (OBS-SR), which explore a wide array of threshold and subthreshold OCD symptoms, behaviours and traits. A diagnostic assessment was conducted to exclude the presence of DSM-IV axis I and axis II disorders using the Mini International Neuropsychiatric Interview and the Structured Clinical Interview for DSM-III-R personality disorders, respectively.Results:A statistically significant correlation was found between the OBS-SR total score and the Q-LES-Q domains of physical health, subjective feelings, work, school, social relationships and general activities. There was also a statistically significant correlation between several Q-LES-Q and OBS-SR domains.Conclusions:The presence of subthreshold OCD is correlated with poorer QoL. More research is needed to evaluate if specific therapeutic interventions targeting subthreshold obsessive-compulsive symptoms can lead to a significant improvement in the QoL of the affected individuals.


2006 ◽  
Vol 188 (2) ◽  
pp. 159-164 ◽  
Author(s):  
Seyed Mohammad Assadi ◽  
Maryam Noroozian ◽  
Mahdi Pakravannejad ◽  
Omid Yahyazadeh ◽  
Shahrokh Aghayan ◽  
...  

BackgroundInformation on psychiatric morbidity of prisoners has almost entirely been based on research in Western countries and it is uncertain whether these research findings are applicable to other settings.AimsThe primary objective was to investigate the prevalence of psychiatric disorders in Iranian prisoners.MethodThrough stratified random sampling, 351 prisoners were interviewed using the clinical version of the Structured Clinical Interview for DSM-IVAxis I Disorders and the Psychopathy Checklist: Screening Version.ResultsThe majority (88%) of prisoners met DSM – IV criteria for lifetime diagnosis of at least one Axis I disorder and 57% were diagnosed with current Axis I disorders. Opioid dependence (73%) had the highest prevalence among lifetime diagnoses, whereas major depressive disorder (29%) was the most common current diagnosis. Psychopathy was recorded in 23%. Prevalence rates of psychiatric disorders were significantly different among offence categories.ConclusionsThe results suggest that a substantial burden of psychiatric morbidity exists in the prison population of Iran, with treatment challenges that appear to be different from those observed in inmates in Western countries.


2021 ◽  
Author(s):  
Rachel Strimas

Evidence suggests high rates of psychiatric disorders in bariatric surgery candidates (e.g., Kalarchian et al., 2007; Mitchell et al., in press), although no rigorous studies have examined the prevalence in a Canadian sample. As such, the first purpose of this study was to assess the prevalence of Axis I disorders, and associations with quality of life, in a sample of consecutively referred bariatric surgery candidates at the Toronto Western Hospital Bariatric Surgery Program. In light of emerging evidence linking emotion regulation difficulties with diverse psychiatric symptoms, the second purpose of this study was to examine whether emotion regulation difficulties were common or specific determinants of mood, anxiety, and eating psychodiagnostic categories, as such information would help inform interventions. Three hundred and twenty-one bariatric surgery candidates (80.1% female; M age = 44.37 years) were assessed using a structured psychodiagnostic interview and completed questionnaires of health-related quality of life and emotion regulation difficulties. Results indicated that 54.5% of patients met DSM-IV-TR criteria for a lifetime psychiatric diagnosis and 18.4% met criteria for a current psychiatric disorder. Major depressive disorder was the most common lifetime psychiatric disorder and binge eating disorder was the most prevalent current psychiatric disorder. Compared to patients without a current Axis I disorder, participants diagnosed with a current Axis I disorder reported significantly worse functioning on most mental and physical health domains (p’s < .01). Overall, a series of regression analyses revealed that difficulties regulating emotions accounted for unique variance in current mood and anxiety disorder status (p’s < .001). Difficulties in emotion regulation were not significantly associated with current eating disorder status after Bonferroni correction. Taken together, these results confirm the high rates of psychiatric disorders in a Canadian sample of bariatric surgery candidates and provide evidence for associated functional health impairment. The data also add to the growing body of literature demonstrating emotion regulation difficulties across psychodiagnostic categories and are consistent with suggestions that psychosocial interventions for bariatric patients might benefit from directly targeting difficulties in emotion regulation. Further study of these associations is needed to replicate these findings and elucidate how difficulties in emotion regulation interact with psychopathology to affect patients’ post-operative outcomes.


Author(s):  
Paul S. Links ◽  
Jamal Y. Ansari ◽  
Fatima Fazalullasha ◽  
Ravi Shah

The purpose of this review is (a) to study and systematically review the recent literature examining the co-occurrence and relationships between Axis I psychiatric disorders and Axis II personality disorders (PDs), specifically the five originally proposed for DSM- 5, and (b) to consider the clinical utility of the current Axis I and II approach in DSM-IV-TR. Community surveys or prospective cohort studies were reviewed as a priority. Our review indicates that the associations between clinical disorders and PDs clearly varied within each disorder and across the five PDs. Our understanding has advanced, particularly related to the clinical utility of comorbidity; however, it seems premature to conclude that comorbidity is best conceptualized by having all disorders in a single category or by deleting disorders so that comorbidity no longer occurs. Our review suggests some priorities for future research into comorbidity such as including PDs in future multivariate comorbidity models.


2012 ◽  
Vol 29 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Bernice Prinsloo ◽  
Catherine Parr ◽  
Joanne Fenton

Objective: To determine the prevalence of mental illness among the residents of a homeless hostel in inner city Dublin.Method: A cross-sectional survey was carried out among hostel residents, as previous studies have indicated that homeless hostel-dwelling men in Dublin constitute the largest single grouping of homeless Irish people. All agreeable residents were interviewed by the authors over an eight-week period using the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I) Clinical Version. For each disorder, the current (30-day) and past prevalence was determined.Results: A total of 38 residents were interviewed, resulting in a response rate of 39.2% for the study. A total of 81.6% of residents had a current Axis I diagnosis; this number increased to 89.5% when combining current and past diagnoses. Only four residents had no diagnosis. There was considerable comorbidity between disorders, with a significant number of residents experiencing both mental illness and substance use problems. When considering lifetime diagnoses, 31.6% had a single diagnosis only; 57.9% had two/more diagnoses. Twelve residents (31.6%) had been admitted to a psychiatric hospital during their lifetime. The most prevalent disorders during the past month were Alcohol Dependence (23.7%), Opioid Dependence and Major Depressive Disorder (both 18.4%), Opioid Abuse and Alcohol-Induced Depression (both 7.9%). Only 23.7% of interviewed residents were attending psychiatric or addiction services. A significant number of residents who did not wish to participate in the study were identified by hostel staff as having a confirmed psychiatric diagnosis.Conclusion: The survey demonstrated a very high prevalence of mental disorders among homeless hostel residents. The high prevalence of dual diagnosis highlights the need for greater collaboration between psychiatric services and addiction services. The outcome also points to the importance of providing mental health training to emergency shelter/hostel staff. Research into the mental health status of the homeless should be undertaken regularly if services are to be planned to meet the needs of this vulnerable group.


1997 ◽  
Vol 170 (5) ◽  
pp. 447-452 ◽  
Author(s):  
Tom Foster ◽  
Kate Gillespie ◽  
Roy McClelland

BackgroundThe aim of this part of the Northern Ireland Suicide Study was to investigate the prevalence of DSM - III - R axis I (clinical syndrome) and axis II (personality) disorders among suicides (14 years and older) in Northern Ireland during a one-year period.MethodA psychological autopsy study based on a variety of documentary sources and interviews with bereaved informants and health care professionals.ResultsNinety per cent of suicides (106/118) had a current axis I and/or an axis II mental disorder. At least one current axis I disorder was diagnosed in 86% of suicides (102/118), and at least one axis II disorder was diagnosed in 44% (52/118). Suicides under 30 years (92% male) were less likely to have a current axis I disorder (68%; 26/38) than those 30 years and older (95%; 76/80). Psychiatric comorbidity was present in 55% of suicides (65/118). The time between the last contact with a health care professional and death was greater among suicides under 30 years and male suicides.ConclusionsNotwithstanding the aetiological complexity of suicide, the prevention, recognition and treatment of mental disorder will continue to play key roles in suicide prevention.


Author(s):  
E Uhlmann ◽  
C Geisert ◽  
E Hohwieler

The feed axes of computer numerical control (CNC) grinding machine tools are among the most mechanically stressed components of machine tools owing to the high process forces and rough manufacturing environment which they encounter. The resulting wear and tear depends strongly on the product range and the manner of machine operation. To counteract a functional deficiency of these central machine units, the current usual approach is preventive maintenance. The manual inspection of feed axes is complex and time consuming. A complicating matter is that the deterioration normally progresses very slowly and depends on the position of the stress along the axis. Existing approaches to automated estimation of the ‘health status’ of feed axes do not take this factor into account. This paper presents a procedure that addresses this gap. During simple test routines, the drive current, axis position, and feed rate are recorded. With the help of additional machine data, characteristic values are computed directly at the computer of the human—machine interface (HMI). The results are then transferred to and stored on a database server at the machine manufacturer. This approach enables the service technician to trace the progression of the axes’ ‘health status’ over a long time. This approach makes it possible to detect trends in the characteristic values at an early point in time. This leads to a better planning of necessary maintenance actions adapted to the remaining lifetime of the wearing component.


Author(s):  
Andrzej M. FARYŃSKI ◽  
Tomasz BRODNIEWICZ ◽  
Jarosłąw DĘBIŃSKI ◽  
Łukasz SŁONKIEWICZ ◽  
Radosław SZYMAŃSKI ◽  
...  

This work presents the results of research on the influence of strong external electromagnetic fields on the operation of JED spark caps activated by transformer systems. The tests were carried out in order to determine the conditions of safe use of JED caps installed in control systems of generators producing electric current pulses using the principle of an explosive magnetic field cumulation [1]. For this purpose, the measurements of the voltages induced in the transformer JED spark cap actuation system were performed using sinusoidal external current with an amplitude of 10 kA for a period of 15 microseconds. This current flowed at a distance from d = 10 mm to d = 40 mm from the axis of the ferrite cores of the applied transformers: a closed core with an outer diameter of 20 mm, an inner diameter of 10 mm and a height of 10 mm and an open core with a diameter of 6 mm and a length of 25 mm. The transformers used in Air Force Institute of Technology (AFIT) were placed alternately parallel and perpendicular to the axis of the current conductor. In the case of a transformer with a cylindrical open core perpendicular to the current axis, the induced voltages significantly exceeded the values at which the caps were activated (about 2 kV) and became lower than these values at d of about 40 mm. Toroidal closed cores provided induced voltages of up to 200 V (10 times lower) for all configurations tested. The measurements were performed using a system and methods developed at AFIT.


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