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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Life history traits that predispose South African linefishes to overexploitation

Haupt, Meghan 21 February 2019 (has links)
Globally, the status of many fish stocks remains unknown, of which the majority fall under data-limited small-scale fisheries. Management decisions in most of these fisheries are difficult due conflicting objectives and views from fisheries managers and scientists. In South Africa, the traditional boat-based ‘linefishery’ provides such an example of a small-scale, multi-species fishery with a long history. The historical de facto open access nature of this fishery resulted in continuous declines in catches of many linefish species, and in 2000 the fishery was declared to be in a state of emergency. This led to a reduction of up to 70% within the fishery, among other measures, such as introductions of size and bag limits. Assessing the status of linefish species is difficult due to a lack of reliable long-term data for the majority of species. The aims of this study were therefore: (1) to quantify the stock status for all linefish species with available life history and size composition information, (2) compare current and historical stock levels to ascertain if the reduction in effort facilitated any recovery in linefish species and (3) correlate the current stock status estimates to life history traits to identify simple indicators of resilience to exploitation. For this purpose, length frequency data from 1988-1990 and 2008-2010 and biological parameters sourced from literature were used to conduct per-recruit analysis to estimate spawner biomass depletion (SBD) for both time periods. The majority of the 26 species analyzed, (68%) showed improvements in spawner biomass between the two time periods, with 12 species undergoing a change in stock status (i.e. improving from collapsed or overexploited). Specifically, increases in length-at-capture (Lc) as well decreases in fishing mortality (F) facilitated recovery for many species. Asymptotic length (L∞), as well as the ratio between Lc / L∞ and Lc / Lopt (where Lopt is the optimum length) were found to be significantly correlated to spawner biomass depletion. Kruskal Wallis analyses revealed that only movement pattern had a significant relationship to SBD, more specifically, migratory species were significantly more depleted than resident ones. This study identifies simple indicators that, in the absence of conventional stock assessments, provide fisheries managers with a fundamental understanding of a species’ susceptibility to overexploitation – offering another decision making tool for use in data poor fisheries such as the South African linefishery.
22

Assessment of tidal stream energy potential for Marine Corps Recruit Depot Parris Island

Gay, Thomas Joseph 24 August 2010 (has links)
The energy of the tides represents one globally existent source of renewable energy, and has the potential to play a major role in a sustainable future. An assessment of the potential for tidal energy extraction using marine current turbines at a particular location in the Beaufort River near Parris Island, South Carolina is presented. The Marine Corps Recruit Depot located on Parris Island is situated between the confluence of the Broad and Beaufort Rivers. These rivers are tidally dominated, and experience some of the largest tidal ranges in the southeastern United States, between 2.5 and 3 meters during spring tide periods. Because Parris Island already has much of the necessary land-based infrastructure in place, there is logical potential for the extraction of kinetic energy from the nearby tidal streams using underwater turbines for power production. In order to evaluate the potential of a particular location to produce significant amounts of energy using these types of devices, extensive investigations must be conducted to determine important site characteristics such as water depth, current velocity, and water level fluctuations over time. This potential was investigated using in-situ measurements in the vicinity of the pump station on Parris Island, and by developing a numerical model of the region using the Regional Ocean Modeling System (ROMS). This model was calibrated using the results from the in-situ measurements, and was then used to determine the impacts of tidal energy extraction on the local flow field. Results from in-situ measurements indicate that tidal currents along the portion of the Beaufort River analyzed in this study are driven primarily by the semi-diurnal M2 tidal constituent. The tidal range at the study site is approximately 2 meters on average, with a mean depth-averaged current velocity magnitude of 0.57 m/s predicted for a period of one year. A mean depth-averaged current velocity magnitude of 0.59 m/s was observed over the course of the longer-term ADCP deployment from November 12 to December 17, 2009. The maximum current speed at the site is approximately 1.2 m/s at the water surface. The ROMS model applied to the coastal areas surrounding Parris Island, SC produces results that closely resemble in-situ measurements collected previously during both the boat-based survey and the longer-term ADCP deployment. In the analysis of the effects of energy extraction from the system, four separate cases were considered in which 10, 20, 30, and 60% of the total kinetic energy contained in the flow was dissipated near the location of the longer-term ADCP deployment. Minimal impacts on the local hydrodynamics were observed across the four cases considered.
23

Att upptäcka potentiellt toxiska ledare vid chefsrekrytering : En kvalitativ studie med hjälp av erfarenheter från rekryteringskonsulter

Wik, Theo, Sjökvist, Julia January 2021 (has links)
In the following essay, we examine how recruitment consultants avoid and prevent recruiting toxic leadership. To investigate this topic, a qualitative study was applied, where five recruitment consultants were interviewed in order to tell us about their experiences on the subject. These experiences were discussed and we noted that it is in certain parts of the recruitment process, where characteristics and behaviours are being dealt with, that are essential for our recruitment consultants to help them avoid toxic leadership. We compiled the empirical material in tables and could establish that some traits and behaviours that were repeated during the interviews are linked to toxic leadership. For example, when leaders are outspoken, mean and unsympathetic. These characteristics and behaviours can be distinguished by the recruitment consultants during the parts of the recruitment process called interviews, reference taking and testing. Furthermore, we discuss the recruitment consultants' perception regarding whether a leader is toxic or whether something toxic can be created depending on the context. From this discussion, we conclude that recruiters in the recruitment process find it easier to avoid something that is toxic rather than something that could possibly be toxic.
24

Exploring mechanisms underlying recruitment of white crappie in Ohio reservoirs

Bunnell, David B., Jr. 20 December 2002 (has links)
No description available.
25

Analyzing the assignment of enlisted recruiting goal shares via the Navy's enlisted goaling and forecasting model

Hojnowski, Ronald A. 03 1900 (has links)
Approved for public release, distribution is unlimited / This thesis examines the process by which enlisted goal shares are generated by Commander, Navy Recruiting Command (CNRC) and assigned to Navy Regional recruiting commands. Through use of an econometric goaling and forecasting model employed by CNRC and a less complicated weighting system used by Regions, goal shares are generated using factors believed to accurately predict future recruiting success. The factors used in the new contract prediction model include local economic conditions, population demographics, and recruiting resources. This thesis evaluates these factors to obtain a clear understanding of how each affects the establishment of goal shares. The various levels within the recruiting organization are analyzed, to include a discussion on how each of these levels prioritizes assigned goals, specifically accessions and new contract objectives, and the reasons why these priorities differ across levels within the organization. The thesis analyzes the role of past production data and Production per Recruiter (PPR) in establishing goal. Recruiter incentives and potential impacts of these incentives on the attainment of quality contracts are also discussed. Finally, the accuracy of CNRC forecasts is evaluated and recommendations are made to help ensure the continued success of these forecasts well into the future. This thesis finds CNRC's goaling forecasts to be quite accurate; however, with more precise data for a few specific variables within the goaling model, it is believed the accuracy of forecasts could be improved. Additionally, this thesis finds that due to current recruiter incentives, recruiters may not be motivated to contract the best possible candidates for enlistment at all times. / Lieutenant, United States Navy
26

組織因素、使用者因素與人力網站服務品質之關係研究

蔡佳真, Tsai, Chia Chen Unknown Date (has links)
本研究的目的為探討與人力網站服務品質相關的課題,即瞭解求才廠商(人力網站使用者)對於人力網站的滿意度、組織因素與使用者因素對於總滿意度、各項服務品質的滿意度及重要性評量的影響狀況、以及不同的服務品質衡量方式(單題分數與組合加權平均分數)對於總滿意度的預測情況。本研究以104人力銀行為對象,整理其過去一年客戶服務的資料,並訪談該網站的客戶服務人員,形成本研究問卷,問卷發放2566份給104人力銀行之求才廠商使用者,回收1141份有效問卷,問卷回收率為44.46%。 針對求才廠商使用者,本研究的結果發現:(一)整體而言,求才廠商對於人力銀行的整體服務品質感到滿意;(二)求才廠商對於各個服務品質(客服人員、資料庫媒合、網路工具、內容養及招募成效)方面的滿意度與重要性感受都頗高,各向度的重要性與滿意度平均分數皆在2.5以上(4點量表);(三)若干組織因素與使用者因素對總滿意、各個服務品質的滿意度、重要性感受有預測力;(四)根據總滿意的分數,把求才廠商區分為「不滿意組」與「滿意組」,發現兩組皆在招募成效方面的滿意度較低,而在客服人員方面的服務滿意度較高;(五)而在預測總滿意度方面,發現採用採用單題分數的預測力較組合加權平均分數來得高。 研究者針對各個服務品質項目與各因素(組織因素、使用者因素)間相關情況的原因加以討論、檢討本研究的限制,並提出對研究與實務建議。
27

Utmaningar på GMU i förhållande till vuxenutbildning : ur ett officersperspektiv / Challenges at Basic Military Training in relation to adult education : from an officer perspective

Cavalli-Björkman, Per January 2012 (has links)
Den 1 juli 2010 avskaffades värnplikten i förmån för ett yrkesförsvar, varpå premisserna för utbildningen av soldater förändrades. Idag har män och kvinnor från 18 år möjlighet att genomföra s.k. Grundläggande Militär Utbildning (GMU) under tre månader på frivillig basis. De nya premisserna kan m.h.t. frivilligheten ställas i paritet med civil vuxenutbildning, där båda upplever exempelvis avhopp till följd av motivationsbrist. Syftet med studien är delvis att identifiera officerarnas upplevda utmaningar på GMU avseende rekryternas tidigare erfarenheter, motivation samt lärarrollen. Därtill syftar studien till att undersöka om de är desamma för civil vuxenutbildning. Intervjuer av åtta officerare har genomförts för att identifiera de utmaningar som föreligger på GMU, samt en komparativ analys mellan dessa utmaningar och bland annat Knowles andragogikteori, som i den här studien representerar utmaningarna för den civila vuxenutbildningen. Resultatet visar att det föreligger utmaningar på GMU som är desamma för civil vuxenutbildning, särskilt tydligt vad gäller elevens/rekrytens motivation, men å andra sidan visar resultatet på att det föreligger utmaningar på GMU som inte förekommer i samma omfattning som i vuxenutbildning, och vice versa. / In July 2010 Sweden abolished conscription in favor of an all-volunteer military force, whereupon the prerequisites for the recruitment and training of soldiers changed. Today, men and women from the age of 18 can sign up for a so-called Basic Military Training (GMU) for three months on a voluntary basis. The new prerequisites can, with regard to voluntariness, be on par with civilian adult education, both of which are, e.g., experiencing drop-outs as a result of lack of motivation. The purpose of the study is partly to identify the officers’ perceived challenges at GMU regarding recruits earlier experience, motivation and the teacher’s role. In addition, the study aims to examine whether these challenges are the same as for the civilian adult education. Interviews of eight officers have been conducted to distinguish the challenges that exist at GMU, as well as a comparative analysis between these challenges and theory of adult learning, including Knowles’s andragogy model, which in this study represents challenges for the civilian adult education. The result shows that there are challenges at GMU that are the same as for the civilian adult education, particularly evident in terms of the motivation of the pupil/recruit, but on the other hand, the result shows that there are challenges at GMU that do not occur in the same extent as in adult education, and vice versa.
28

EFFECTS OF TREEFALL GAPS AND SOIL DISTURBANCE ON THE INVASION OF FOUR NON-NATIVE PLANT SPECIES IN A MATURE UPLAND FOREST IN MARYLAND

Emsweller, Lauren N. 30 November 2015 (has links)
No description available.
29

"They Are More Afraid of Losing Women Than of Having Women" : How the structural transformation of the Swedish Armed Forces has affected the experience for female recruits

Granat, Mimmi January 2016 (has links)
When interviewing female conscripts, Emma Lindgren Lauritzon (2012) found that they perceived their basic military training in the Swedish Armed Forces as a negative experience. The women felt that the environment was hostile and that they served on the conditions of men. This is especially alarming since the unequal conscription was replaced by voluntary service for all in 2010, making the Swedish defence dependent on attracting the whole population to fill up its necessary positions. Therefore, this thesis examines how female recruits experience the new basic military training and if the structural transformation, with a more gender equal entrance, has had an impact on the individual level. Eight semi-structured interviews were conducted, designed and presented by a deductive thematic analysis, and later interpreted through feministic and gender organizational theories. The results indicate a positive development in their experiences, and more so – a new development of the women feeling especially wanted and needed. This perceived dependency on women is arguably in the risk of backfiring, generating guilt if they disappoint the organisation. This study gives vital insight to the organisation in question, the Swedish Armed Forces, and also several new and interesting aspects to build future research on regarding women in the military.
30

Law Enforcement Intelligence Recruiting Confidential Informants within “Religion-Abusing Terrorist Networks”

Ucak, Hursit 30 April 2012 (has links)
This study examines the motivation factors that make some individuals (terrorists) confidential informants. The study is based on the assumptions of Maslow’s hierarchy of needs and Herzberg’s motivation-hygiene theories. Accordingly, main assumption of the present study is that some individuals with unsatisfied needs in religion-abusing terrorist (RAT) networks choose to become confidential informants to satisfy their predominant needs. The main hypothesis for the purpose of this study is “The individuals’ decision-making processes to cooperate with law enforcement intelligence (LEI) as a confidential informant is affected by some motivation factors during recruitment process.” The present study tests 27 hypotheses in order to answer two main research questions. To meet its objectives the present study uses quantitative research methodology, constructs a cross-sectional research design, and employs secondary data analysis to test the hypotheses of the research questions. A dataset was formed based on official records of Turkish National Police by including all confidential informants within eight different RAT networks in Turkey. First, individual effect of each motivation factor on being a confidential informant is tested and discussed in detail. Then two group specific multivariate models for being an informant in Al-Qaeda and Turkish-Hezbollah are illustrated, compared and contrasted. Both bivariate and multivariate statistical analyses not only revealed the extent of individual effects of motivations among RAT groups, but also helped us to build fitting multivariate models that explain the probability of being informants in certain RAT networks. By doing so, the present study aims to make contributions to the literature and practice on this relatively unexplored phenomenon. Findings indicate that while some motivation factors are common among all RAT networks, the strength and direction of their effects vary among different RAT networks.

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