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71.
Aldo Jonathan Muñoz-Vázquez Vicente Parra-Vega Anand Sánchez-Orta Oscar Martínez-Fuentes 《Journal of The Franklin Institute》2021,358(9):4793-4806
Disturbance observer-based control allows to compensate unknown inputs, however, in most cases, requiring their integer-order differentiability. In this paper, a novel disturbance observer-based state feedback controller is proposed to compensate a more general class of fractional-, but not necessarily integer-order, differentiable unknown inputs. The proposed fractional PI-like structure yields precise conditions for feedback gain tuning. Remarkably, the resulting controller rejects non-differentiable disturbances with a smooth controller, guaranteeing robustness, an outstanding features for tracking tasks, under a prescribed practical stability regimen. A comparison to a fractional sliding mode observer is conducted via simulations to highlight the reliability of the proposed scheme. 相似文献
72.
An ordering system for a global information network is necessary in order to enable the user to retrieve the particular information he is looking for. Classification has been one of the methods of ordering. The principle of traditional classification has been based on the idea of partitioning the universe of knowledge in mutually exclusive classes, i.e. subjects. A particular topic is defined by narrower classification within a class following the principle of ‘genusspecies’ relationship. Ranganathan's system of faceted classification has only replaced the classification of terms into subjects and sub-subjects by classification of terms into five ambiguous categories. Taube's system of coordinate indexing gives full freedom to the user to combine any number of terms of his choice. To be effective for social sciences such a system has to overcome some difficult problems of semantics. The system MANIS described here maintains the traditional classification and yet allows the user to combine terms of his choice, where the choice is restricted to the terms belonging to the system of traditional classification. 相似文献
73.
In this article, we describe the development and implementation of a project, “Our Leaders Are Us: Youth Activism in Social
Movements”, that we undertook with New York City high school students exploring events leading up to and following the Supreme
Court’s landmark decision in Brown. As part of a 50th anniversary celebration of the Brown decision, we designed a series
of three workshops that sought to extend urban students’ knowledge of Brown, segregation, and activism and to examine the
roles of young people in critical civil rights campaigns. In addition, we discussed with students the ways in which young
people can be involved in contemporary social movements and the strategies they can use to effect what they perceive to be
needed changes in their lives. Along with the researchers’ extensive field notes, the participating students completed questionnaires
throughout the project so that their understanding of Brown and related issues could be documented. Using our findings, we
suggest ways that educators can develop and implement similar programs for use in schools.
相似文献
Erica N. WalkerEmail: |
74.
Steven M. Ross Deborah McCormick Nancy Krisak Padma Anand 《Educational technology research and development : ETR & D》1985,33(3):169-178
The present paper examines a strategy intended to facilitate mathematics learning by adapting the context of instructional material to students’ backgrounds and interests. In four validation studies, the strategy was implemented through teacher management, using college students learning statistical probability rules as subjects. Achievement and attitude outcomes consistently favored treatment groups who received the adaptive contexts over control groups. The culmination of this research is the development of a computer-assisted model to increase the strategy’s practicality and sensitivity to learner differences. The computer model uses stored information about each student to personalize explanations and story examples on a fractions unit. 相似文献
75.
This paper reports the results of a survey undertaken by the World Health Organization of health sciences libraries in Southeast Asia. It includes information on clientele, budget, personnel, collections, lending policy, dissemination of information, and reference services. The survey indicates that the collections in most of the health sciences libraries in Southeast Asia are deficient and that services provided to readers are inadequate. Recommendations for improvement are outlined. 相似文献
76.
Rimi Shukla Kiran Anand K. M. Prabhu P. Suryanarayana Murthy 《Indian journal of clinical biochemistry : IJCB》1995,10(2):119-121
Hypolipidemic effect of the water extract of the bark ofFicus bengalensis was investigated in alloxan induced diabetes mellitus in rabbits. Treatment for one month (50 mg/kg body weight/day) brought down the level of total serum cholesterol (TC) in subdiabetic and diabetic rabbits (five in each group) from 82±11 mg% and 118±10.6 mg% to 42.7±3.1 mg% and 51.7±4.7 mg% respectively. Low density lipoprotein cholesterol and very low density lipoprotein cholesterol values came down from 34±10 mg% and 95±24 mg% to 16±3 mg% and 29±4 mg% in subdiabetic and diabetic rabbits. Triacylglycerol level before treatment was 121±21.6 mg% and 416±70 mg% in subdiabetic and diabetic rabbits. Treatment brought it down to 45±5 mg% and 81±27.5 mg%. Glycosylated hemoglobin was brought down from 2.1±0.3% to 1.5±0.1% in subdiabetic group and from 4.28±0.5% to 2±0.3% in diabetic group, indicating that treatment with water extract effectively controlled blood sugar. After treatment with water extract serum lipid values were nearly equal to those in healthy controls (normal) in subdiabetic rabbits, while in diabetic group, the values were only slightly above those of normal. 相似文献
77.
Afzal Ahmad Benedicta D’Souza Charu Yadav Ashish Agarwal Anand Kumar M. Nandini Vivian D’Souza A. M. Poornima Nutan Kamath 《Indian journal of clinical biochemistry : IJCB》2016,31(4):480-482
Alstrom’s syndrome (AS) is a rare autosomal recessive ciliopathic condition affecting 1:10,00,000 children. It’s a single gene disorder of ALMS1 on chromosome 2 with multisystem involvement with cone-rod retinal dystrophy causing juvenile blindness, obesity, insulin resistance, type 2 Diabetes mellitus, hypogonadism and sensorineural hearing loss. Till now only 800 patients with this disorder has been identified so far. In this report, we describe the case of a 9-year old male boy from south India. He had been initially referred for polyphagia, polyuria, polydipsia, generalized weakness from 1 weeks. On examination he was demonstrated features suggestive of AS, including blindness, obesity, type 2 diabetes, altered lipid profile, hypogonadism, acanthosis nigricans, seborrheic dermatitis, right ear discharge and episodes of respiratory tract infections. So, diagnosis of AS is critical as it can easily be overlooked because of the many features associated with metabolic syndrome starting at age 7, a relatively early age. 相似文献
78.
Anand K. Pyati Basavaraj B. Devaranavadagi Sanjeev L. Sajjannar Shashikant V. Nikam Mohd. Shannawaz Satish Patil 《Indian journal of clinical biochemistry : IJCB》2016,31(4):439-445
The study aimed to investigate whether heart-type fatty acid binding protein (H-FABP) measurement provides additional diagnostic value to that of conventional cardiac markers in acute myocardial infarction (AMI) within first 6 h after the onset of symptoms. The study included 120 subjects: 60 AMI cases and 60 age and sex matched controls. The cases and controls were further divided into 2 subgroups depending on the time since onset of chest pain as (1) subjects within 3 h and (2) between 3 and 6 h of onset of chest pain. In all the cases and controls, serum H-FABP concentration was measured by Immunoturbidimetric method, serum Troponin I and myoglobin concentrations by Chemiluminescence immunoassay and serum CK-MB concentration by Immuno-inhibition method. The sensitivity, specificity, positive and negative predictive values of H-FABP were significantly greater than CK-MB and myoglobin but were lesser than Troponin I in patients with suspected AMI in both within 3 h and 3–6 h groups. Receiver operating characteristic curves demonstrated greatest diagnostic ability for Troponin I (AUC = 0.99, p < 0.001) followed by H-FABP (AUC = 0.906, p < 0.001) within 3 h and 3–6 h after the onset of chest pain. In conclusion, the diagnostic value of H-FABP is greater than CK-MB and myoglobin but slightly lesser than troponin I for the early diagnosis of AMI within first 6 h of chest pain. H-FABP can be used as an additional diagnostic tool for the early diagnosis of AMI along with troponin I. 相似文献
79.
N. Krishnamurthy K. Arumugasamy U. Anand C. V. Anand V. Aruna G. Venu R. Gayathri 《Indian journal of clinical biochemistry : IJCB》2010,25(1):43-46
Plasma cystatin C is an emerging parameter to assess kidney function. Its utility in assessing the adequacy of hemodialysis
in patients with end-stage-renal disease has however not been established with certainty. This study was therefore carried
out to assess the usefulness of serum cystatin C estimation in patients undergoing low flux membrane hemodialysis. Serum creatinine
and cystatin C were estimated in 20 patients before and after undergoing hemodialysis. The mean serum creatinine decreased
from a pre-dialysis value of 7.72 mg/dL to a post-dialysis value of 2.90 mg/dL. On the contrary, the mean serum cystatin C
levels were found to increase from a pre-dialysis value of 5.97 mg/L to a post-dialysis value of 8.25 mg/L. Therefore, serum
cystatin C cannot be used to monitor dialysis adequacy. It however, serves as a surrogate marker of the inadequacy of low
flux membrane bicarbonate hemodialysis in clearing low molecular weight proteins from the circulation. 相似文献
80.
The purpose of this study was to evaluate the relationship between the physicochemical properties of saliva such as flow rate,
pH, buffering capacity, calcium level, total protein and total antioxidant levels in caries free and caries active children.
The present study included one hundred and twenty healthy children who were divided into two groups; group I and group II
comprising of age groups 7–10 and 11–14 years, respectively. Both the groups were then sub-divided equally according to gender.
They were further divided into caries free and caries active with 15 children in each group. Unstimulated saliva was collected
by suction method and flow rates were determined. The samples were then analyzed for pH, buffering capacity, total protein,
calcium and total antioxidant capacity. The data was statistically analyzed using student t test (unpaired). The results revealed that when all these parameters were compared among the caries free and caries active
children, flow rate, pH, buffering capacity were slightly reduced in caries active children, but total protein and total antioxidant
capacity of saliva increased significantly in caries active children and the total calcium decreased significantly in caries
active children. Within the limitation of this study, we conclude that, the physicochemical properties of saliva play a major
role in the development of caries. 相似文献