669 research outputs found
An analysis of the effect of logistics involvement in cross-functional integrated new product development projects
The primary purpose of this dissertation was to empirically test the relationship between logistics involvement in new product development and improvements in new product development project performance and logistics performance. A logistics involvement new product model was developed that contained seven first order constructs: environmental uncertainty, improving information technology, time and quality based competition, global factors, cross-functional integration, new product development project performance, and logistics performance; and two second order constructs, logistics functional salience and logistics involvement
Investigations on fishery and biology of nine species of rays in Mumbai waters
Annual landings of rays by trawlers operating from New Ferry Wharf, Mumbai during 1990-2004 ranged from 205.7 t to
765.1 t with an average of 502.8 t constituting nearly 1 % of trawl catches. The trawling effort increased from 0.95 million
hours (mh) in 1990 to 1.73 mh in 2004, whereas the catch rate declined from 0.65 kg h-1 in 1990 to 0.24 kg h-1 in 2004.
There were two peak periods of abundance, September-December and February-April. Fourteen species of rays constituted
the fishery, of which Himantura alcockii (50.1 %), Himantura bleekari (13.9 %), Amphotistius imbricatus (8.5 %) and
Himantura uarnak (8.1 %) formed the mainstay of the fishery. Information on biology of H. alcockii, H. bleekeri,
A. imbricatus, Pastinacus sephen, Dasyatis zugei, Gymnura japonica, G. poecilura and Mobula diabolus is also presented.
It appears that the resource of rays off Mumbai may not be able to withstand any further increase in fishing effort. Innate
biological characteristics such as limited brood size, late maturation and capture of spawning stock are the causes of continuous
decline. Conservation measures are required to protect this resource from further depletion
Fishery and biology of threadfin bream, Nemipterus mesoprion from Mangalore-Malpe
The landings of threadfin breams recorded 8 fold increase during 1989 – 1998
period while the catch rate showed three-fold increase. Maximum catch and
catch rate was observed in September-October. N. mesoprion has taken over
the place of N. japonicus by forming 64% of the fishery. The mean size increased
from 127 to 164 mm. Significant differences were found in the length-weight
relationship between sexes. Males outnumbered females in all the months and
the overall sex ratio was M-1: F-0.70, which significantly departs from the expected
1:1 ratio. The minimum size at first maturity of males was 145 mm and
female, 125 mm. Spawning was prolonged with peak during August-November.
The peak spawning indicated by GSI, is in general agreement with the percentage
occurrence of maturity stages in different months. The fecundity ranged
from 7,444 to 49,689 eggs. The stomach content analysis revealed that the species
feed mainly on crustaceans
Intra-Pelvic Migration of Sliding Hip Screw During Osteosynthesis of Hip Fracture: A Rare Avoidable Intraoperative Complication.
Hip fractures, which are common among old patients, are classified into two groups: intracapsular and extracapsular fractures. Extracapsular fractures can be treated with extramedullary implants [e.g. dynamic hip screw (DHS)] or intramedullary nails. Dynamic hip screw is the treatment of choice in stable pertrochanteric fractures. Intrapelvic migration of the sliding screw is a very rare complication
Coral reef ecosystem - Monitoring and assessment using satellite data sets
Remaining in splendid isolation, the Andaman and Nicobar Islands have a great relevance
in the study of marine ecosystems. The islands, though remotely located in an ostensibly
pristine environment have born witness to serious issues with regard to their ecosystem
health. There are significant changes in the temperature and rain fall pattern in the islands
and predictive modelling has forecasted further damage in the near future. The inundation
of saline water into inland terrestrial ecosystems has created salinity stress to freshwater
species while reducing the water available for domestic consumption. Terrestrial flora and
fauna are vulnerable to the intruding saline waters. The marine ecosystem also faces grave
challenges. There are issues of anthropogenic pollution resulting in damage of corals, regime
shifts in community structure, water quality deterioration and other damage to marine
fauna
Network-aware Evaluation Environment for Reputation Systems
Parties of reputation systems rate each other and use ratings to compute reputation scores that drive their interactions. When deciding which reputation model to deploy in a network environment, it is important to find the
most suitable model and to determine its right initial configuration. This calls for an engineering approach for describing, implementing and evaluating reputation
systems while taking into account specific aspects of both the reputation systems and the networked environment where they will run. We present a software tool (NEVER) for network-aware evaluation of reputation systems and their rapid prototyping through experiments performed according to user-specified parameters. To demonstrate effectiveness of NEVER, we analyse reputation models based on the beta distribution and the maximum likelihood estimation
High abundance of large sized rock cods (Epinephelus spp.) off Karnataka coast during the postmonsoon month of September
some of the
multi-day units ventured into deeper waters
(60-80 m) and obtained good catches of reef
cods (Fig: 1) along with threadfin breams and
cuttle fishes. Encouraged by this, more number
of multi-day units were put into operation in
September of the following year (1995) and got
still better catches of reef cods
Climate change impact on the feeding habits of Indian mackerel observed along the Kerala coast
While most food and feeding research in fisheries emphasize the feeding habits and diet components of the fish, the aim of the present work was to assess any change in the diet composition of Indian mackerel Rastrelliger kanagurta (Cuvier, 1816) and identify the role of climate change in effecting it. Non-parametric statistical technique, the Generalized Additive Model (GAMs) was used for modeling the causal link of diet changes in relation to climate change using mgcv package of R software. Monthly Index of Relative Importance (IRI) was calculated for 36 months from January 2013 to December 2015 and major prey items in the diet were identified. Climatic variables - Sea Surface Temperature (SST), precipitation (Pr), Chlorophyll a (Chl a), salinity and Ekman transport or coastal upwelling index (CUI)) pertaining to the study area were extracted for the period. Length-wise IRI was compared to check the existing patterns in the feeding habits of the fish. The dominant prey items observed in the gut of Indian mackerel during the study period were diatoms ( Fragillaria sp., Nitzchia sp., Thalassiothrix sp., Thalassiosira sp. and Coscinodiscus sp.), dinoflagellates (Ceratium sp., Ornothocercus sp., Dinophysis sp. and Prorocentrum sp.), copepods (Calanoida, Cyclopoida and Harpacticoida), decapods (Acetes) and tintinnids (Tintinnopsis sp., Codenellopsis sp. and Flavella sp). GAM models were fitted with monthly IRI of the major prey items (copepods, diatoms, dinoflagellates, Acetes and tintinnids) in the gut and climatic variables. Model selection was done in terms of sharpening the relation between the predictors and the response variable using Akaike information criterion, R-squared and F-statistics. GAM model results revealed that occurrence of prey items in the diet of Indian mackerel were influenced by environmental variables. An increase in the relative importance of dinoflagellates, Acetes and tintintids in the diet over the historic period was observed. The study also revealed a shift in the diet composition of younger fishes. The results of the current study provide a more in-depth assessment of the nonlinear relationship between climatic variables and diet composition of Indian mackerel
Marine catfish resources of India
The marine catfish production showed a continuously declining
trend all along the Indian Coast, from 67,666 t (1982) to 37,518 t
(1995), while the situation is alarming along the SW and SE coast.
This group is one of the most vulnerable resources for irrational
harvest during their migratory and breeding phase. With the advent
of mass harvesting gear like purse seine and trawlers, there
has been a continuous onslaught on this resource during the periods
of south bound or north bound migrations parallel to the coast.
The damage is further aggravated when their spawning shoals
are exploited from the surface often causing large scale destruction
of parents and egg / embryos, leading to overfishing affecting
the recruitment to the population. The paper gives the possible
migratory route, seasons of vulnerability and impact of fishing gear
on the resources. It is attempted to corelate the surface drift with
the seasonal migrations. Various management practices
are proposed to conserve the threatened species and suggested
possible lines of exploitation preferably on the non-migratory
species from distant waters in the middle shelf
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