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User-Friendly Approach to Capacity Planning Studies with Java Modelling Tools

User-Friendly Approach to Capacity Planning Studies with Java Modelling Tools

In the first step of this methodology, the values in Table 1 are inserted in JABA to determine the graph in Figure 10. The figure shows the bottlenecks in heavy-load of the web architecture as a function of the percentage of WS1 requests (Class 1, vertical axis) and WS2 requests (Class 2, horizon- tal axis) while the total population of requests in the system is kept constant. The segments in green represent mixes of WS1 and WS2 requests where only one server saturates, the blue segments are mixes of requests for which two resources saturate concurrently. With the service demands of the con- sidered system, no mix exists that produces saturation on all three servers concurrently. For instance, if the admission control system allows to enter the system 50% of requests of each type, the saturation condition is given by the middle sector of the figure, which tells us that the storage server (SS) will be the bottleneck.
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How professional capital and team heterogeneity affect the demands of online team-based medical service

How professional capital and team heterogeneity affect the demands of online team-based medical service

This research aids in the understanding of how a MT leader affects the composition of a team, and how these two aspects (leader and team) affect TSD. Scholars have tested how to maximize group effectiveness via optimal configurations of different conduits for such capital [32], and our results show that team based service demands could be increased by improving the composition of a MT. First, doctors with a higher service quality often have many duties in physical hospitals and have less time to concentrate on OHCs [65], so the complementary ef- fect among doctors can improve efficiency and efficacy, and subsequently increase TSD. Second, if patients feel that a team’s heterogeneity is high while evaluating and comparing teams to make a choice, after basing their choice on the team leader, they become more willing to obtain services from the entire team because of in- creased perceived value. Thus, teams with a leader that possesses a higher professional capital could increase team heterogeneity to achieve a balance between service quality and response speed.
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Modelling the Impact of Nigeria Household Energy Policies on Energy Consumption and CO<sub>2</sub> Emissions

Modelling the Impact of Nigeria Household Energy Policies on Energy Consumption and CO<sub>2</sub> Emissions

mitigation potentials of the Nigerian household energy policies. We disaggregated the Nigeria household energy service demands into six, which are cooking, lighting, refrigeration, air conditioning, water heating and other electrical appliances for both the urban and rural households. Among all these energy services, cooking continues to remain the most energy intensive activity in the Nigeria residential sector even across the two scenarios. Increase in electrification was also identified to have a similar effect on energy consumption. Our analysis suggests that achieving one goal might impede the realisation of another desirable goal. Nigeria has the potentials of saving huge amount of energy if the conventional pattern of energy usage is changed. However, this will not have a corresponding effect on climate change mitigation most especially in the cooking sub-sector, in the sense that moving away from the use of traditional biomass to LPG for cooking by all households will significantly increase CO 2 emissions. Hence, low-carbon cooking alternatives are
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Research on the Elderly’s Demands for the Old-age Care Services

Research on the Elderly’s Demands for the Old-age Care Services

Among the aged-people, living alone elders, advanced-aged elders and disabled elders are most urgent in demands. Living alone elders and single elders account for 24.8% and 32.3% of this survey respondents respectively, and their demands for daily care, spiritual consolation and emergency rescue are much higher than those of elders living with spouse or offspring. According to the survey data analysis, except demand for entertainment, all kinds of service demands increase with age, which is more obvious in elders aged 80 years or older since they suffer from severe decreasing physical function. Besides, there are more than 150 thousand disabled or semi-disabled elders whose demands cannot be satisfied by personal or familial support in Nanjing, which is imperative for social forces to intervene. Due to the shortage of services for living alone elders and disabled elders, some elders in poor conditions have to wait for the chance of settlement in nursing home despite of their urgent needs, which intensify the structural contradictions. The construction of social elderly care service system should optimize the system structure in consideration of the special demands of advanced-aged elders, living alone elders and disabled elders, make the services humanized, personalized and convenient.
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Estimating Service Resource Consumption From Response Time Measurements

Estimating Service Resource Consumption From Response Time Measurements

demands in order to best match the distribution or moments of the measured response times. This requires an important paradigm shift in the modeling methodology as illustrated in Figure 4. Since the response times depend on several sys- tem properties related to scheduling or service demand dis- tribution, in the proposed methodology one should take as- sumptions on scheduling or general form of the distribution prior to starting the service demand estimation activity, thus the returned service demands depend on the characteristics of the model in which they will be used, see Figure 4(b). Conversely, Figure 4(a) illustrates the traditional utilization based estimation methodology, where resource consumption is estimated from the utilization, which is independent of model characteristics such as scheduling or service demand distribution. Therefore, in the classic approach, the impact of the modeling assumption is deferred to the model solution step and the service demand estimates are absolute, i.e., they represent intrinsic properties of the system that do not de- pend on the particular type of model to be used. Conversely, our proposed methodology requires preliminary assumptions on the characteristics of the final model to determine the best possible service demand estimates relatively to the tar- get model. Since the final goal of the modeling activity is to obtain good agreement between experimental observations and model predictions, we believe that the response time approach has a stronger focus on achieving this goal by re- turning the best parameters under model assumptions.
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Study on the Demand of Aging Service for the Residents in Shenyang

Study on the Demand of Aging Service for the Residents in Shenyang

Abstract: At present, the aging phenomenon in our country is getting worse day by day. The situation in Shenyang is not optimistic either. According to the latest report from Shenyang Statistical Bureau, by November 2016, the total population of permanent residents in Shenyang had reached 7.314 million. Among them, the number of registered permanent residents over the age of 60 reached 1.35 million, accounting for 23.7%, increasing from 15.3% in 2011. Compared with the increasing aged population, the aged care service industry in our country is deficient. Simply increasing the number of beds is not reasonable. It not only does not improve the seniors’ life quality, but can also result in the waste of resources for the aged, resulting in the simultaneous occurrence of "hard to find one bed in elderly care institutions" and empty beds in those institutions. Therefore, in order to improve the aging care system and develop the aged care service industry, we must earnestly understand the seniors’ life demands and provide the aged services that truly meet the needs of the aged based on the market conditions. Therefore, we hope to investigate the status quo of aging service demands in Shenyang and find out the characteristics and internal differences of aging service needs in Shenyang and the factors that affect the differences in demand so as to provide new information for the development of aging care services in Shenyang.
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Performance responsive middleware for grid computing

Performance responsive middleware for grid computing

A key feature of this research is that these per- formance services are integrated with standard Grid middleware. Intra-domain resource management is implemented as an additional service that directs the Condor scheduler [19], which provides a mechanism for the deployment of the workload to the physical resources. This extra layer of management uses an iterative scheduling algorithm to select task sched- ules that satisfy service demands, minimise resource idle time and balance the workload over the available intra-domain resources. A peer-to-peer agent system is used to assist in multi-domain workload manage- ment. At this level, the middleware uses the Globus information services [12, 14] to support resource ad- vertisement and discovery. This allows direct inter- domain task migration and results in tangible perfor- mance benefits. Compelling evidence of the benefits of these services is documented for a 256-node Grid. Detail of the supporting performance prediction system are documented in section 2. The intra- domain resource management service is described in section 3; this is extended to multi-domain task management in section 4. Experimental results in section 5 provide evidence of substantial improve- ments to user-perceived quality of service and Grid resource utilisation.
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On the Use of Online Analytic Performance Models in Self-Managing and Self-Organizing Computer Systems

On the Use of Online Analytic Performance Models in Self-Managing and Self-Organizing Computer Systems

In [16] we presented a framework for the design of QoS-aware software compo- nents. This section presents another application of online performance models in the design of QoS-aware Service Oriented Architectures (SOAs). Figure 8 presents an architecture that consists of QoS-aware service providers (SPs), clients that make requests to the SPs, and a QoS Broker (QB). SPs register with the QB. During the registration process, the QB engages in a protocol aimed at characterizing the services provided by an SP in terms of their service demands. A client that needs a service contacts the QB to discover the service, authenticate itself, and negotiate QoS requirements in terms of response time and required throughput for its session with the SP. The QB keeps track of all accepted QoS requests and uses an online performance model to negotiate new requests. Based on the results of the performance evaluation, a request may be accepted, rejected, or a counteroffer may be sent to the client. Once a session is accepted, the SP is informed and the client makes requests directly to the SP, which is responsible for admission control.
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Strategies for successfully meeting the  demands of quality and service excellence

Strategies for successfully meeting the demands of quality and service excellence

The foundation of quality in professional service lies in the ac­ ceptance and implementation of a value system. The profes­ sions allied to the construction industry cannot afford to neglect those values since it is through their application that quality is achieved. Moral and ethical values are intrinsic to quality prod­ ucts.

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U.S.-Based Project Centers Offer Superior Effectiveness Over Offshore in CRM Implementations

U.S.-Based Project Centers Offer Superior Effectiveness Over Offshore in CRM Implementations

In summary, CRM initiatives are more important for businesses than ever before. Successful, forward- thinking companies must learn to embrace new CRM capabilities to remain competitive. Gartner’s 2012 CEO Survey “found that CEOs cited CRM as their most important area of investment to improve their business over the next five years.” Newer software systems and advanced methods for managing customer data have vastly improved CRM capabilities and the real promise of CRM is becoming a reality. To fully benefit from a successful CRM implementation companies need to partner with qualified onshore service partners who can offer consistent and sustainable CRM resources and
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Schools & Academies Three-year Service Level Agreement HR Staffing Services

Schools & Academies Three-year Service Level Agreement HR Staffing Services

3.7 All communications and all information supplied to or obtained by the Service Provider in the course of or as a result of the discharge of his obligations under this Agreement and all information relating to any invention, improvement, report, recommendation or advice given to the Establishment by the Service Provider in pursuance of his obligations shall be treated by the Service Provider as confidential and shall not be disclosed by him to any third party or published without prior written consent of the School, such consent not to be unreasonably withheld.

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Physicians' working conditions and job satisfaction: does hospital ownership in Germany make a difference?

Physicians' working conditions and job satisfaction: does hospital ownership in Germany make a difference?

The second dimension of the JD-R model includes job resources, which are defined as psychological, social and organizational characteristics of work that may positively influence an employee's well-being [10]. Previous research studies demonstrated that these resources com- pensate for deleterious effects of job demands and encour- age employees development [10]. Examples of job resources are 1) job autonomy and participation, 2) social support, and 3) quality of leadership.

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Armi Mustosmäki Researcher, Department of Social Sciences and Philosophy, University of Jyväskylä, Finland.

Armi Mustosmäki Researcher, Department of Social Sciences and Philosophy, University of Jyväskylä, Finland.

The aim of this study was to compare the possibilities of experiencing positive well-being in call centers and other service sector work. The article focuses on the prevalence of working conditions (job demands, autonomy, and social support) in call centers and at other service sector workplaces and how these factors are related to work engagement. In addition, we examine whether the relation- ships are divergent in call centers in comparison to other service sector work. Analysis is based on the data provided by the “Quality of Life in Changing Europe” project. The survey data were collected from service sector organizations (retail, banking, and insurance) and a telecom organization’s call center functions in Finland (N = 967). According to our results, work engagement in call center environment is challenging due to the strong negative effect of job demands. In general, call center employees expe- rienced less feelings of engagement than employees in the comparison organizations. This difference remained significant even after controlling for background factors and measures of working conditions. In addition, we found significant differences between call center and other service sector organizations in the effects of both autonomy and demands. The levels of autonomy and work demands proved to be strong antecedents of perceived work engagement, especially in call center environment.
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Empowering Communities with Direct Access to Health Data

Empowering Communities with Direct Access to Health Data

Readability Demands Readability Demands Response Response Execution Execution Demands Demands Access Access correct correct med info med info Locate Locate /identify /identify[r]

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International Journal of Computer Science and Mobile Computing

International Journal of Computer Science and Mobile Computing

The real-time nature of video broadcast demands quality of service (QoS) guarantees such as delay bounds for end-user satisfaction. Given the bit rate requirements of such services, delivery efficiency is another key objective. The basic level of quality is supported by the base layer and incremental improvements are provided by the enhancement layers. Deterministic delay bounds are prohibitively expensive to guarantee over wireless networks. Consequently, to provide a realistic and accurate model for quality of service, statistical guarantees are considered as a design guideline by defining constraints in terms of the delay-bound violation probability. For scalable video transmission, a set of QoS exponents for each video layer are obtained by applying the effective bandwidth/capacity analyses on the incoming video stream to characterize the delay requirement. The problem of providing statistical delay bounds for layered video transmission over single hop unicast and multicast links was considered in this system.
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Demands, values, and burnout

Demands, values, and burnout

Although important, this focus is incomplete, as it neg- lects the dimensions of involvement and professional efficacy that are central to professions such as medicine. The job demands–resources model outlined by Demerouti et al provides a more complete perspective by examining resources as well as demands in the psychological experi- ence of work. 3 To comprehend health care professionals’

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Abstract: A Cloud storage service model generally demands security of data with least cost. Different Cloud

Abstract: A Cloud storage service model generally demands security of data with least cost. Different Cloud

Abstract: A Cloud storage service model generally demands security of data with least cost. Different Cloud computing security threats expected to be resolved Cloud environment incorporating Data Access Controllability, Data Confidentiality, and Data Integrity. This paper proposes the cost-aware Cloud storage system using information dispersal algorithm. This proposed system does not use the same as existing methodologies of replication to address data availability and security issues. The proposed system stores the file parts using redundant data encoded with erasure code on multi-cloud environment. This proposed system helps in recreating the user file even when certain threshold numbers of file parts are not available. The proposed approach provides storage of data with-in user‟s budget and empowers to recover user data if some natural or men made disaster occurs.
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The Demands of Democratic Ownership

The Demands of Democratic Ownership

Holt’s point-by-point comparison of LS and POD is marred by his mis-charact- erisation the latter. He does not regard as signiőcant Rawls’s predistributive focus on equalising agents’ endowments prior to their market transactions; Holt calls Rawls an ‘interventionist’ and the mechanisms of a POD ‘redistributive’. In my view, the aim of a POD is to prevent excessive concentrations of capital, not (as Holt argues) to eliminate them entirely. People can save and make productive use of capitalÐsubject to the demands of fair reciprocityÐin a POD. Rawls’s preferred system of inheritance also seeks widely to disseminate capital holding whereas Holt claims it eliminates the bequest of wealth entirely.
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Reducing the health disparities of Indigenous Australians: time to change focus

Reducing the health disparities of Indigenous Australians: time to change focus

Education in culturally safe care also requires self- reflection – where service providers examine the qual- ity of the care they provide to Indigenous patients by interrogating the social, political, historical and cultural contexts that shape their own identity to increase their awareness of power dynamics at structural and inter- personal levels that disadvantage their Indigenous cli- ents [see 62]. Yet powerful socio-cultural groups are often indifferent or reluctant to acknowledge they are part of the problem or to examine their role in disad- vantaging Indigenous clients, illustrating Wisniewski’s concept of ‘the averted gaze’[77:5]. We suggest this is a form of wilful blindness which leads to inaction, main- tains the status quo, produces more talk about health inequalities but little fundamental change – in other words, a health system which remains part of a broader system that undermines the health of disadvantaged while “privileged” health professionals continue to meter out medical and lifestyle advice.
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Data Analytics in Cloud Computing

Data Analytics in Cloud Computing

Likewise, determining the computer power of a cloud drive is of importance, as underestimating the demands placed on it could slow service and make the cloud less effective. If data being processed and accessed on cloud drives seems random and from vastly different fields, it could strain the magnetic disks in the cloud servers and cause them to not operate at their full potential when working with large data sets. Diversifying data to multiple cloud servers as not to strain individual servers can help clouds operate more like tradition networks, keeping them competitive. Given the scope of big data, some clouds still cannot host or analyze certain sets of data
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