The use of operational research and systems analysis in decision making in Unilever

1977 ◽  
Vol 287 (1346) ◽  
pp. 487-492
Keyword(s):  
Systems Analysis ◽  
Operational Research ◽  
Financial Models ◽  
Scientific Interest ◽  
Long Term Effects ◽  
Telecommunications Network ◽  
Computer Based ◽  
Balance Of Interest ◽  
Wild Life

An organization as big as Unilever (1975 sales were £7000 million) needs to consider the balance of interest between shareholders, employees, customers, government and the environment. Many routine decisions are computerized and no longer of scientific interest. The talk will be concerned with some more complex problems. Decision trees are being used on investment and withdrawal problems. Systems analysis helps us to study the long-term effects of effluents on wild life in rivers. We have the world’s largest private telecommunications network so that managers can have access to current information and we have computer based financial models to enable us to explore the effects of decisions on cash and profit flows.

scholarly journals Long-term Effects of Male Reading Tutors, Choice of Text and Computer-based Text on Boys’ Reading Achievement

2010 ◽  
Vol 12 (1) ◽  
pp. 116
Author(s):  
Laura Sokal
Keyword(s):  
Reading Achievement ◽  
Inner City ◽  
Struggling Readers ◽  
Group Differences ◽  
Long Term Effects ◽  
Self Perceptions ◽  
Reading Tutors ◽  
Reading Materials ◽  
Computer Based

Sixty-two inner-city Canadian boys identified as struggling readers participated in a 22-week intervention that examined the effects of male reading tutors, computer-based texts, and choice of reading materials. Immediately after the intervention, boys demonstrated between-group changes to reader self-perceptions and gendered views of reading but no between-group differences in achievement. Two years after the intervention’s completion, the boys’ reading comprehension achievement scores were again examined and compared to 62 non-participating boys matched at the time of the study’s onset. Results showed no significant differences between the two groups. Of the boys who participated in the intervention, working with male reading tutors and with computer-based texts did not result in higher achievement than working with female reading tutors or with print-based texts. However, boys who were not given a choice in their reading materials demonstrated reading achievement six months ahead of the boys who were given a choice. 

scholarly journals Um estudo bibliométrico sobre a pesquisa operacional aplicada à sustentabilidade ## A bibliometric study on operational research applied to sustainability

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Victor Hugo Souza De Abreu ◽  
Marina Leite de Barros Baltar ◽  
Andrea Souza Santos
Keyword(s):  
Public Health ◽  
Literature Review ◽  
Operational Research ◽  
Web Of Science ◽  
Human Action ◽  
Decision Makers ◽  
Bibliometric Study ◽  
Long Term Effects ◽  
Bibliometric Approach

ResumoA sustentabilidade está sendo cada vez mais vista como uma possível solução para os problemas decorrentes, principalmente, da ação humana no meio ambiente. Entretanto, para que seus efeitos sejam observados à longo prazo faz-se necessário que sejam utilizadas abordagens como a Pesquisa Operacional (PO) que busca solucionar, ou pelo menos minimizar, problemas reais e complexos, fornecendo apoio aos tomadores de decisão. Nesse sentido, este estudo busca realizar uma revisão da literatura com abordagem bibliométrica que tem como objetivo identificar estudos que utilizam a PO aplicada à sustentabilidade. Para obter e compilar as informações, foram utilizados os bancos de dados do Web of Science™, que apresenta alcance e cobertura satisfatórios. Os resultados mostram, por exemplo, que o assunto, embora antigo, continua em expansão, sendo publicados estudos em periódicos com elevada relevância científica. Além disso, nota-se que a utilização da PO é uma importante estratégia de suporte aos tomadores de decisão brasileiros de diversas áreas do conhecimento tais como saúde pública, gerenciamento urbano e rural e engenharia para promoção da sustentabilidade. AbstractSustainability is increasingly being seen as a possible solution to problems arising mainly from human action on the environment. However, for its long-term effects to be observed, it is necessary to use approaches such as Operational Research (OR) which seeks to solve, or at least minimize, real and complex problems, providing support to decision makers. Thus, this study conducts a literature review with a bibliometric approach that aims to identify studies that use the OR applied to sustainability. To obtain and compile the data, we used Web of Science ™ databases, which have satisfactory range and coverage. The results show, for example, that the despite being an old subject, it is still expanding, with studies published in journals with high scientific relevance. In addition, it is noted that the use of OR is an important strategy to support Brazilian decision makers from various areas of knowledge such as public health, urban and rural management, and engineering to promote sustainability.

Long-term effects of a computer-based nutritional training program for inpatient hospital care

2017 ◽  
Vol 23 (4) ◽  
pp. 797-802 ◽  
Author(s):  
Albert Westergren ◽  
Ellinor Edfors ◽  
Erika Norberg ◽  
Anna Stubbendorff ◽  
Gita Hedin ◽  
...  
Keyword(s):  
Training Program ◽  
Hospital Care ◽  
Long Term Effects ◽  
Inpatient Hospital ◽  
Computer Based

scholarly journals Assessing the Long-Term Impact of Concussion upon Cognition: A 5-Year Prospective Investigation

2020 ◽  
Vol 35 (5) ◽  
pp. 482-490 ◽  
Author(s):  
Stefan Piantella ◽  
Stuart J McDonald ◽  
Paul Maruff ◽  
Bradley J Wright
Keyword(s):  
Cognitive Performance ◽  
Chronic Stress ◽  
Long Term Effects ◽  
Cognitive Assessments ◽  
Prospective Design ◽  
Computer Based ◽  
Long Term Impact ◽  
The Impact ◽  
Prospective Investigation

Abstract Objective Jockeys have high rates of concussion, with 5% of jockeys receiving at least one concussion annually. The impact of acute concussion upon cognition is well understood, but less is known about the long-term effects of concussion upon cognition. Our aim was to assess the impact of concussion upon jockeys who had provided pre-concussion assessments of cognition using a prospective design. Method In this study, over a 5-year period, we assessed the cognitive performance of jockeys with ≥1 medically diagnosed concussion (MDC; n = 17, months since concussion, M = 29.18), against those who had not been concussed (NC; n = 41). Jockeys who had not been concussed in the preceding 6 months completed four computer-based cognitive assessments from the CogSport battery. Results Unlike the majority of the small existing literature, there was no difference (p ≥ .05) between the MDC and NC groups after controlling for age and baseline performance. Additionally, we used a measure of reliable change to assess for clinically meaningful decrements from baseline in each test and composite score 5 years later. None of the jockeys in the MDC group recorded significant decrements on any CogSport measure from baseline (z > −1.65). Conclusions The findings suggest that the presence of concussion does not result in persistent decrements in cognitive performance and that when findings are considered collectively, assessing factors beyond medically diagnosed concussion (e.g., chronic stress, undiagnosed concussion) may improve the interpretation of our current findings.

Costs and Benefits of Software Engineering in Product Development Environments

2011 ◽  
pp. 199-215
Author(s):  
Sorel Reisman
Keyword(s):  
Software Engineering ◽  
Cost Benefit ◽  
Forecasting Model ◽  
Corporate Management ◽  
Long Term Effects ◽  
Computer Based ◽  
The Subject ◽  
Software Development Methodologies ◽  
New Software Development

The subject of this case is a computer-based cost-benefit forecasting model (CBFM), developed to investigate possible long-term effects of improved productivity from the use of modern software engineering. The primary purpose of the model was to generate comparative data to answer “what-if” questions posed by senior corporate management attempting to understand possible overall effects of introducing the new software development methodologies

Ovarian Dysfunction in Fetally Irradiated Beagles

1977 ◽  
Vol 35 ◽  
pp. 658-659
Author(s):  
T. M. Seed ◽  
M. H. Sanderson ◽  
D. L. Gutzeit ◽  
T. E. Fritz ◽  
D. V. Tolle ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Low Dose ◽  
Long Term Effects ◽  
Ovarian Dysfunction ◽  
Dose Rates ◽  
Highly Sensitive ◽  
Microscopic Evaluation ◽  
Ovarian Pathology ◽  
Normal Offspring

The developing mammalian fetus is thought to be highly sensitive to ionizing radiation. However, dose, dose-rate relationships are not well established, especially the long term effects of protracted, low-dose exposure. A previous report (1) has indicated that bred beagle bitches exposed to daily doses of 5 to 35 R 60Co gamma rays throughout gestation can produce viable, seemingly normal offspring. Puppies irradiated in utero are distinguishable from controls only by their smaller size, dental abnormalities, and, in adulthood, by their inability to bear young.We report here our preliminary microscopic evaluation of ovarian pathology in young pups continuously irradiated throughout gestation at daily (22 h/day) dose rates of either 0.4, 1.0, 2.5, or 5.0 R/day of gamma rays from an attenuated 60Co source. Pups from non-irradiated bitches served as controls. Experimental animals were evaluated clinically and hematologically (control + 5.0 R/day pups) at regular intervals.

Ultrastructural investigations of MDL 19,660-induced effects on the canine platelet and megakaryocyte

1990 ◽  
Vol 48 (3) ◽  
pp. 374-375
Author(s):  
D.E. Loudy ◽  
J. Sprinkle-Cavallo ◽  
J.T. Yarrington ◽  
F.Y. Thompson ◽  
J.P. Gibson
Keyword(s):  
Antidepressant Drug ◽  
Beagle Dogs ◽  
Long Term Effects ◽  
Short Term ◽  
Platelet Counts ◽  
Toxicological Studies ◽  
Induced Aggregation ◽  
Internal Architecture

Previous short term toxicological studies of one to two weeks duration have demonstrated that MDL 19,660 (5-(4-chlorophenyl)-2,4-dihydro-2,4-dimethyl-3Hl, 2,4-triazole-3-thione), an antidepressant drug, causes a dose-related thrombocytopenia in dogs. Platelet counts started to decline after two days of dosing with 30 mg/kg/day and continued to decrease to their lowest levels by 5-7 days. The loss in platelets was primarily of the small discoid subpopulation. In vitro studies have also indicated that MDL 19,660: does not spontaneously aggregate canine platelets and has moderate antiaggregating properties by inhibiting ADP-induced aggregation. The objectives of the present investigation of MDL 19,660 were to evaluate ultrastructurally long term effects on platelet internal architecture and changes in subpopulations of platelets and megakaryocytes.Nine male and nine female beagle dogs were divided equally into three groups and were administered orally 0, 15, or 30 mg/kg/day of MDL 19,660 for three months. Compared to a control platelet range of 353,000- 452,000/μl, a doserelated thrombocytopenia reached a maximum severity of an average of 135,000/μl for the 15 mg/kg/day dogs after two weeks and 81,000/μl for the 30 mg/kg/day dogs after one week.

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