Southern California marine sport fishing from privately-owned boats: catch and effort for October-December 1981

The catch landed and effort expended by private-boat sport fishermen were studied in southern California between October and December 1981, in order to determine the impact of one segment of the sport fishery on local marine resources. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species whose catches are regulated by minimum size limits. An estimated 208,000 organisms were landed by 54,000 anglers and 4,500 divers. The major components of the catch were Pacific mackerel, Scomber japonicus, 50,200 landed; white croaker, Genyonemus lineatus, 35,000 landed, and Pacific bonito, Sarda chiliensis, 27,000 landed. Together, these three species made up over half of the total catch. Most of the size limit regulations were closely observed by anglers; the one exception was that of California halibut, Paralichthys californicus, of which only 65% met legal size requirements. Regarding invertebrates landed by divers, size limit compliance was 90% for red abalone, Haliotis rufescens, and 95% for spiny lobster, Panulirus interruptus. (28pp.

Southern California marine sport fishing from privately owned boats: catch and effort for October-December 1982

The catch landed and effort expended by private-boat sport fishermen were studied in southern California marine waters between October and December 1982, to determine the impact of one segment of the sport fishery on local marine resources. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species whose catches are regulated by minimum size limits. An estimated 157,000 organisms were landed by 57,700 anglers and 4800 divers. The major components of the angler catch were Pacific mackerel, Scomber japonicus (28,700 estimated catch): white croaker, Genyonemus lineatus (24,000 estimated catch); and Pacific bonito, Sarda chiliensis (16,700 estimated catch). These three species represented almost half the total estimated angler catch. Rockfishes, Sebastes spp: were a major catch component; the 35 rockfish species landed made up 24% of the estimated catch. Divers landed an estimated 14,700 fishes and invertebrates. Chief among these were abalone, Haliotis spp. (4200 estimated catch); rock scallop, Hinnites rugosus (3600 estimated catch); and California spiny lobster, Panulirus interruptus (2500 estimated catch). Angler and diver compliance with size-limit regulations was generally favorable, with diver compliance being particularly scrupulous, especially with invertebrate species. The compliance rate for California halibut, Paralichthys californicus, showed a drop from the previous quarter (July - September 1982) from 70 to 59% legal. During the same time period, size-limit compliance rose from 4 to 20% for Pacific bonito, a species with a tolerance allowing the take of some under-sized fish. (28p.

Southern California marine sport fishing from privately-owned boats: Catch and effort for April-June 1981

The catch landed and effort expended by private-boat sport fishermen were studied in southern California between April and June 1981, in order to determine the impact of one segment of the sport fishery on local marine resources. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species whose catches are regulated by minimum size limits. An estimated 310,000 organisms were landed by 106,000 anglers and 4,000 divers (more than twice the catch and effort estimated for the previous 3-month period). The major components of the catch were Pacific mackerel, Scomber japonicus, 63,000 landed; bass, Paralabrax spp., 61,000 landed; white croaker, Genyonemus lineatus, 52,000 landed, and Pacific bonito, Sarda chiliensis, 35,000 landed. These species contributed 70% of the total catch. Anglers' compliance with size limit regulations was variable. Approximately 89% of all measured bass were legal size. The proportion of legal size California halibut, Paralichthys californicus, rose from 60% last quarter to 79% this quarter. However, the percent of legal size California barracuda, Sphyraena argentea, was very low, 58%. Divers' compliance with minimum size limits dropped slightly: abalone, Haliotis spp., averaged 89% legal. (Document has 31 pages

Southern California marine sport fishing from privately owned boats: catch and effort for January-March 1983

The catch landed and effort expended by private-boat sport fishermen were studied in southern California between January and March 1983 in order to determine the impact on local marine resources by one segment of the sport fishery. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of selected species, and length frequencies for those species with minimum size limits. An estimated 74,200 organisms were landed by 29,400 anglers and 1500 divers. The major species in the angler catch included white croaker, Genyonemus lineatus, (16,000 landed) and Pacific mackerel, Scomber japonicus (14,000 landed). The two species combined made up 44% of the total estimated angler catch. Divers, hampered in their activity by stormy conditions, landed an estimated 1700 rock scallop, Hinnites multirugosus. This single species represented almost a third of the estimated diver catch. The length frequency data, collected for size-regulated fish and shellfish species, show that minimum size-limit compliance was very good for both angler-caught and diver-caught species during the reporting period. (31pp.

Non-linear predictability in stock and bond returns: when and where is it exploitable?

We systematically examine the comparative predictive performance of a number of alternative linear and non-linear models for stock and bond returns in the G7 countries. Besides Markov switching, threshold autoregressive (TAR), and smooth transition autoregressive (STAR) regime switching (predictive) regression models, we also estimate univariate models in which conditional heteroskedasticity is captured through GARCH, TARCH and EGARCH models and ARCH-in mean effects appear in the conditional mean. Although we fail to find a consistent winner/out-performer across all countries and asset markets, it turns out that capturing non-linear effects is of extreme importance to improve forecasting performance. U.S. and U.K. asset return data are “special” in the sense that good predictive performance seems to loudly ask for models that capture non linear dynamics, especially of the Markov switching type. Although occasionally also stock and bond return forecasts for other G7 countries appear to benefit from non-linear modeling (especially of TAR and STAR type), data from France, Germany, and Italy express interesting predictive results on the basis of simpler benchmarks. U.S. and U.K. data are also the only two data sets in which we find statistically significant differences between forecasting models. Results appear to be remarkably stable over time, and robust to the specification of the loss function used in statistical evaluations as well as to the methodology employed to perform pairwise comparisons.Group of Seven countries ; Financial markets

Status of major southern California marine sport fish species with management recommendations, based on analyses of catch and size composition data collected on board commercial passenger fishing vessels from 1985 through 1987

This report on the status of major southern California marine sport fish species, together with management recommendations, is based on analyses of catch and size composition data, which were collected on board Commercial Passenger Fishing Vessels (CPFV) from 1985 through 1987. The project was designed to determine the status of those fishes that support the CPFV industry, and to make management recommendations when deemed necessary. We collected and analyzed data based on random, stratified, on-board sampling of weekday (excluding holidays), open CPFV's on a year-round basis. We sampled 1/2-day, 3/4-day, and full-day type trips at a level of 5%. The survey area extended from below the United States-Mexican border to Point Arguello. Catch estimates were extrapolated to include weekday as well as weekend and holiday, open and chartered CPFV's. We sampled 736 CPFV trips in 1985, 650 in 1986, and 631 in 1987. We encountered 180 species of fishes, including 49 species of rockfishes. We performed detailed analyses on 14 non-rockfish species and 12 rockfish species, as well as all fishes as a group and all rockfishes as a group. We found a moderate increase in total catch of combined fish species between this study and one in the mid-1970's, due primarily to sizeable increases in catches of Pacific mackerel, kelp bass, barred sand bass, and barracuda. However, we also found that there has been more than a 50% decline in the CPFV rockfish catches, due primarily to substantial decreases in catches of bocaccio, chilipepper, and olive rockfish. We have recommended that the current 15-rockfish bag limit regulation be reduced to a 10-rockfish bag limit, and that additional and equitable conservation measures also be implemented on the commercial rockfish fishery. (385pp.

Collaborative Language Learning through Cross-Cultural Understanding among Domestic and International Students in Provincial Technical Colleges

This is a practical report of our research project on language learning through cross-cultural understanding among Japanese and international students in regional technical colleges in Japan. The goal of this educational practice is to improve the followings; students’ opportunities to encounter a multiracial, multilingual and multicultural environment, to use foreign languages, and to understand cross-cultural affairs. In order to achieve this goal, we tried to conduct lessons by virtual videolink meetings as well as real face-to-face camps. Japanese government has been promoting the entry of international students and researchers to all universities. Now Japan has over 200,000 students from overseas. As almost half of them enter huge universities in the Tokyo metropolitan area and each university campus is adjacent, domestic or Japanese students in the area can easily meet with international students in order to have a chance at intercultural exchange. However, the other half enter provincial universities and colleges. Hokkaido is one of 47 prefectures in Japan, and also a regional, broad area, away from Tokyo. Universities and Colleges in Hokkaido are much smaller than the ones in Tokyo metropolitan area in particular. Hokkaido only has fewer than 3,000 foreign students in total and each university has a limited number of international students, scattered all around the Hokkaido area. In addition, those universities and colleges are distant from each other by 50-200 km. This means students in urban area like Tokyo have enough opportunity to encounter foreigners in and out of the campus, but on the other hand, students in regional areas like Hokkaido have much less opportunites to meet foreigners. The authors came to recognize that this might be a big problem to motivate second language learning and to understand the importance of cross-cultural understanding from the viewpoint of learning environment. In this project, the authors tried to build a new learning environment so that even students in regional universities and colleges could encounter cross-cultural environment just as students in Tokyo metropolitan area have. They chose three provincial cities, Muroran, Tomakomai, and Hakodate, which are all located in Hokkaido prefecture. Each city is a neighbor city but away from others by 50-200km. To make the most use of a limited number of international students who belong to each provincial university or college as a resource of intercultural exchange, the authors suggested and introduced a quasi-interactive environment of a ICT, videolink space as well as a face-to-face training camps. In the future, the author hope to demonstrate the educational effectiveness of ICT-based interactions similar to face-to-face interactions

The 2-Adic Behavior of the Number of Partitions into Distinct Parts

AbstractLet Q(n) denote the number of partitions of an integer n into distinct parts. For positive integers j, the first author and B. Gordon proved that Q(n) is a multiple of 2j for every non-negative integer n outside a set with density zero. Here we show that if i≢0 (mod2j), then#{0⩽n⩽X:Q(n)≡i(mod2j)}⪢jX/logX.In particular, Q(n) lies in every residue class modulo 2j infinitely often. In addition, we examine the behavior of Q(n) (mod8) in detail, and we obtain a simple “closed formula” using the arithmetic of the ring Z[−6]