scholarly journals Video-Aware Measurement-Based Admission Control

2020 ◽  
Author(s):  
qahhar muhammad qadir ◽  
Alexander A. Kist
Keyword(s):  
Admission Control ◽  
Past History ◽  
Arrival Rate ◽  
Additional Advantage ◽  
Measured Rate ◽  
Admission Decision ◽  
History Of ◽  
Admission Decisions ◽  
The Relationship ◽  
Measurement Period

Using instantaneous aggregate arrival rate as an admission control parameter will contribute to either bandwidth under-utilization or over-utilization. Being bursty in nature and variable in rate, video flows might encode any rate between a range of minimum and maximum values. At the time the decision is made, if the measured rate is at the minimum value, the bandwidth might be over-utilized due to accepting more sessions than the link can accommodate. In contrast, it might be under-utilized if the measured rate is at the maximum value due to rejecting more sessions than the link can accommodate. The burstiness can be taken into account by considering the past history of the traffic. This paper investigates the suitability of the average aggregate arrival rate instead of the instantaneous aggregate arrival rate for video admission decisions. It establishes a mathematical model to predict the relationship between the two rates. Simulation results confirm that the average aggregate arrival rate is a more efficient decision factor for a small number of flows. Although it has no additional advantage for moderate and large number of flows, it still can stabilize the admission decision by smoothing the burstiness of a set of the instantaneous rates (within the measurement period) over a period of time.

scholarly journals Video-Aware Measurement-Based Admission Control

2020 ◽  
Author(s):  
qahhar muhammad qadir ◽  
Alexander A. Kist
Keyword(s):  
Admission Control ◽  
Past History ◽  
Arrival Rate ◽  
Additional Advantage ◽  
Measured Rate ◽  
Admission Decision ◽  
History Of ◽  
Admission Decisions ◽  
The Relationship ◽  
Measurement Period

Using instantaneous aggregate arrival rate as an admission control parameter will contribute to either bandwidth under-utilization or over-utilization. Being bursty in nature and variable in rate, video flows might encode any rate between a range of minimum and maximum values. At the time the decision is made, if the measured rate is at the minimum value, the bandwidth might be over-utilized due to accepting more sessions than the link can accommodate. In contrast, it might be under-utilized if the measured rate is at the maximum value due to rejecting more sessions than the link can accommodate. The burstiness can be taken into account by considering the past history of the traffic. This paper investigates the suitability of the average aggregate arrival rate instead of the instantaneous aggregate arrival rate for video admission decisions. It establishes a mathematical model to predict the relationship between the two rates. Simulation results confirm that the average aggregate arrival rate is a more efficient decision factor for a small number of flows. Although it has no additional advantage for moderate and large number of flows, it still can stabilize the admission decision by smoothing the burstiness of a set of the instantaneous rates (within the measurement period) over a period of time.

Quality of parenting and vulnerability to depression: results from a family study

1998 ◽  
Vol 28 (1) ◽  
pp. 185-191 ◽  
Author(s):  
C. DUGGAN ◽  
P. SHAM ◽  
C. MINNE ◽  
A. LEE ◽  
R. MURRAY
Keyword(s):  
Mental Illness ◽  
Family Study ◽  
Past History ◽  
Familial Risk ◽  
Self Report ◽  
History Of ◽  
Quality Of Parenting ◽  
Independent Effects ◽  
The Relationship ◽  
History Of Depression

Background. We examined a group of subjects at familial risk of depression and explored the relationship between the perceptions of parents and a history of depression. We also investigated: (a) whether any difference in perceived parenting found between those with and without a past history of depression was an artefact of the depression; and (b) whether the relationship between parenting and depression was explained by neuroticism.Method. We took a sample of first-degree relatives selected from a family study in depression and subdivided them by their history of mental illness on the SADS-L, into those: (a) without a history of mental illness (N=43); and (b) those who had fully recovered from an episode of RDC major depression (N=34). We compared the perceptions of parenting, as measured by the Parental Bonding Instrument (PBI), in these two groups having adjusted for the effect of neuroticism and subsyndromal depressive symptoms. We also had informants report on parenting of their siblings, the latter being subdivided into those with and without a past history of depression.Results. Relatives with a past history of depression showed lower care scores for both mother and father combined compared with the never ill relatives. The presence of a history of depression was associated with a non-significant reduction in the self-report care scores compared to the siblings report. Vulnerable personality (as measured by high neuroticism) and low perceived care were both found to exert independent effects in discriminating between the scores of relatives with and without a history of depression and there was no interaction between them.Conclusion. This study confirmed that low perceived parental care was associated with a past history of depression, that it was not entirely an artefact of having been depressed, and suggested that this association was partially independent of neuroticism.

The relationship between mammary gland permeability and the factors related to mothers and their babies

2011 ◽  
Vol 26 (S2) ◽  
pp. 1108-1108
Author(s):  
B. Serim ◽  
A. Ozbek ◽  
M. Ormen ◽  
C. Ergin ◽  
A. Aydın ◽  
...  
Keyword(s):  
Mammary Gland ◽  
Past History ◽  
Depression Scale ◽  
Sodium Concentration ◽  
Case Group ◽  
High Sodium ◽  
Close Friendships ◽  
History Of ◽  
State And Trait Anxiety ◽  
The Relationship

IntroductionStudies have found that mothers normally have high sodium concentrations in their colostrum which shows a rapid decrease in the third day postpartum. A drop in breast milk sodium concentration is highly predictive for successful lactation.Objectives and aimsIn this study, the relationship between mammary gland permeability and the factors related to mothers and their babies were aimed to be investigated.MethodThe case group consisted of 150 consecutive healthy babies at postpartum 8–15 days. Edinburgh Postnatal Depression Scale, State and Trait Anxiety Inventory and Relationship Scale Questionnaire were applied to the mothers. Milk samples from all mothers were collected. Weights of babies at first month were recorded.ResultsIn babies with higher Na concentrations and Na/K ratio in their mothers’ milk, were found to gain less weight at the end of first month and also they were the first babies of the families included in the study. Mothers with higher concentrations of Na in their milk thought they were not appropriate to have a child, had poorer relationships with their own mothers, stated that they had no close friendships and had a past history of mental disorders at significance limits. The EPDS and STAI-I scores of mothers with elevated milk Na concentrations found to be higher.ConclusionRegarding this study's results, the risk factors causing an increase in the permeability of the mammary glands were determined as thoughts of not being suitable for motherhood, symptoms of postpartum depression and high levels of anxiety for the mothers.

Relationship between Sedative Antihistamines and the Duration of Febrile Seizures

2020 ◽  
Vol 51 (02) ◽  
pp. 154-159
Author(s):  
Atsuro Daida ◽  
Gaku Yamanaka ◽  
Shin-ichi Tsujimoto ◽  
Mina Yokoyama ◽  
Kuniyoshi Hayashi ◽  
...  
Keyword(s):  
Febrile Seizure ◽  
Multivariate Analyses ◽  
Past History ◽  
Febrile Seizures ◽  
Cross Sectional Study ◽  
Seizure Duration ◽  
Cross Sectional ◽  
Prolonged Duration ◽  
History Of ◽  
The Relationship

AbstractSome studies have shown that sedative antihistamines prolong febrile seizure duration. Although the collective evidence is still mixed, the Japanese Society of Child Neurology released guidelines in 2015 that contraindicated the use of sedative antihistamines in patients with febrile seizure. Focused on addressing limitations of previous studies, we conducted a cross-sectional study to evaluate the relationship between febrile seizure duration and the use of sedative antihistamines. Data were collected from patients who visited St. Luke's International Hospital due to febrile seizure between August 2013 and February 2016. Patients were divided into groups based on their prescribed medications: sedative antihistamine, nonsedative antihistamine, and no antihistamine. Seizure duration was the primary outcome and was examined using multivariate analyses. Of the 426 patients included, sedative antihistamines were administered to 24 patients. The median seizure duration was approximately 3 minutes in all three groups. There was no statistical difference in the bivariate (p = 0.422) or multivariate analyses (p = 0.544). Our results do not support the relationship between sedative antihistamine use and prolonged duration of febrile seizure. These results suggest that the use of antihistamines may be considered for patients with past history of febrile seizure, when appropriate.

Neuroticism in familial depression

1987 ◽  
Vol 17 (1) ◽  
pp. 155-161 ◽  
Author(s):  
Randy Katz ◽  
Peter McGuffin
Keyword(s):  
Depressive Symptomatology ◽  
Past History ◽  
The State ◽  
Personality Characteristics ◽  
Personality Factors ◽  
Depressed Patients ◽  
History Of ◽  
Familial Vulnerability ◽  
The Relationship ◽  
History Of Depression

SynopsisThis study examined the relationship between personality factors and depression in subjects who may have a familial vulnerability to depression (i.e. first-degree relatives of depressed patients). Four groups comprised our study sample: relatives who had never experienced a psychiatric episode of depression; relatives who had experienced a psychiatric episode of depression but were currently well; relatives who had never experienced a psychiatric episode of depression but were currently depressed; and relatives who had experienced a past history of depression and were currently depressed. Of the four personality characteristics measured (Psychoticism, Extraversion, Neuroticism and Lie), the only significant effects between groups appeared to be attributable to Neuroticism (N).The strongest association was between current illness and N. There was also a tendency for subjects with a past history of depression to have an inflated N score. However, this appeared to be associated with the presence of current depressive symptomatology. Our findings indicate that when current symptomatology is taken into account Neuroticism does not seem to reflect the trait of liability to depression, but is strongly associated with the state of being depressed.

A Comparison of Alcoholics with and without Coexisting Affective Disorder

1983 ◽  
Vol 143 (2) ◽  
pp. 133-138 ◽  
Author(s):  
K. O'Sullivan ◽  
P. Whillans ◽  
M. Daly ◽  
B. Carroll ◽  
A. Clare ◽  
...  
Keyword(s):  
Family History ◽  
Affective Disorder ◽  
Diagnostic Criteria ◽  
Past History ◽  
History Of ◽  
Relationship Of ◽  
The Relationship

SummaryThree hundred male Irish alcoholics were selected from 508 consecutive alcoholic admissions to hospital. Using well defined diagnostic criteria, they were divided into three subgroups (1) primary alcoholics, (2) alcoholics with secondary affective disorder and (3) those with primary affective disorder and secondary alcoholism. Although the three groups reported differences in past history and family history of affective disorder and in time spent in hospital for both alcoholism and affective disorder, there was little to distinguish them in behaviour associated with alcoholism or in family history of alcoholism. The implications of these findings and their significance for the relationship of affective disorder and alcoholism are discussed.

Headache and Epilepsy: Two Autonomous Entities?

Cephalalgia ◽  
1984 ◽  
Vol 4 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Faustino Savoldi ◽  
Amelia Tartara ◽  
Raffaele Manni ◽  
Maurizia Maurelli
Keyword(s):  
Family History ◽  
Epileptic Seizure ◽  
Past History ◽  
Primary Headache ◽  
Headache Attack ◽  
Epileptic Patients ◽  
History Of ◽  
History Of Epilepsy ◽  
The Relationship

The relationship between headache and epilepsy remains unresolved. We studied 3,600 patients affected by primary headache and 36 epileptic patients with a present or past history of headache. In the first group, no family history of epilepsy nor epileptiform EEG patterns were found. In the second group, there was no chronological relationship between epileptic seizure and headache attack in more than half of the patients; when found (46.1%) the relationship was neither precise nor specific. Taken as a whole, these data suggest the autonomous nature of epilepsy and headache.

Thyroid-Induced Mania in Hypothyroid Patients

1980 ◽  
Vol 137 (3) ◽  
pp. 222-228 ◽  
Author(s):  
Allan M. Josephson ◽  
Thomas B. Mackenzie
Keyword(s):  
Past History ◽  
Case Reports ◽  
Manic State ◽  
Affective Disturbance ◽  
Patients At Risk ◽  
History Of ◽  
The Relationship ◽  
Hypothyroid Patients ◽  
Insight Into ◽  
High Range

SummaryThis retrospective study, based on 18 case reports, describes an organic affective syndrome, manic type, occurring shortly after the initiation of thyroid replacement in hypothyroid patients. The symptomatology and homogeneity of the syndrome offers insight into the relationship between thyroid activity and affective disturbance. The patients experiencing mania showed concurrent psychopathology at the time of replacement therapy, frequently had a past history of personal or familial psychiatric disorder and were given dosages in the high range of normal. The potential morbidity of the manic state was considerable. These findings suggest that a group of hypothyroid patients at risk can be identified. In such a group, lower initial dosages and gradual increases in dosage may be indicated.

Satisfaction with Democracy and the Winner/Loser Debate: The Role of Policy Preferences and Past Experience

2011 ◽  
Vol 42 (2) ◽  
pp. 241-261 ◽  
Author(s):  
Luigi Curini ◽  
Willy Jou ◽  
Vincenzo Memoli
Keyword(s):  
Past History ◽  
Political Support ◽  
Satisfaction With Democracy ◽  
History Of ◽  
Policy Content ◽  
The Government ◽  
The Impact ◽  
The Relationship ◽  
Single Time Point

Previous authors have found greater political support among electoral winners than losers, but they define winners and losers at a single time point, and employ a dichotomous categorization that neglects possible variations within each group. This study considers both the past history of winning or losing and the impact of ideological distance from the government on a political support indicator – satisfaction with democracy. Using a multilevel model covering thirty-one countries, the authors show that the relationship between winner/loser status and satisfaction with democracy has a marginal dynamic nature and a policy content. Among present losers, previous experience of victory assuaged dissatisfaction, while among those presenting a consolidated ‘winning’ record, only high ideological proximity to the current government boosted political support.

William Ofori Atta, Nnambi Azikiwe, J.B. Danquah and the “Grilling” of W.E.F. Ward of Achimota in 1935

1994 ◽  
Vol 21 ◽  
pp. 171-189 ◽  
Author(s):  
Ray Jenkins†
Keyword(s):  
Turning Point ◽  
Past History ◽  
Progress Report ◽  
Gold Coast ◽  
Colonial State ◽  
Kwame Nkrumah ◽  
Study And Teaching ◽  
History Of ◽  
British Colonial ◽  
The Relationship

In December 1932 J. B. Danquah identified five stages or “ages” in the coastal political history, or the “national history,” of the Gold Coast. This paper may be described as a temporary departure from a preoccupation with “Ages” two, three, and four (1867-1930) and a tentative entry into the study of the fifth: Danquah's post-1930 “Age of Enlightenment.” What follows therefore is more of a shift in time than of space and focus—the area and arena of coastal politics in the colonial Gold Coast. If a new age did dawn in the 1930s, then for an influential core of today's Ghanaianist historians, it would seem that the turning point occurred in 1935. In that year the radical response of I.T.A. Wallace-Johnson and Nnambi Azikiwe (“Zik”) to the Ethiopian crisis galvanized those forces that presaged the later emergence of Kwame Nkrumah, one of history's winners. In sharp contrast, J.B. Danquah, one of history's losers, represented the continuity of past conservatism during—and after—the 1930s.A bold attempt to confirm or contradict the 1935 “discontinuity thesis” is beyond the scope of this progress report on an act of trespass into the 1930s. The modest outcome of the latter is a snapshot of Accra-based politics. It tries to bring into focus several elements: the texture, style, and ‘reach’ of urban-based politics and politicians; the place of the study and teaching of history in anticolonial nationalist thought; and the extent to which rhetoric served as a mask for the pursuit of group or personal grievance and ambition. In short, this paper re-examines an old theme—the relationship between past history and present politics, albeit within the confines of a British colonial state.

Sign in / Sign up

Export Citation Format

Share Document