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Search Results: 1 - 10 of 2916 matches for " Sharon Valente "
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Nurses' Psychosocial Barriers to Suicide Risk Management
Sharon Valente
Nursing Research and Practice , 2011, DOI: 10.1155/2011/650765
Abstract: Suicide remains a serious health care problem and a sentinel event tracked by The Joint Commission. Nurses are pivotal in evaluating risk and preventing suicide. Analysis of nurses' barriers to risk management may lead to interventions to improve management of suicidal patients. These data emerged from a random survey of 454 oncology nurses' attitudes, knowledge of suicide, and justifications for euthanasia. Instruments included a vignette of a suicidal patient and a suicide attitude questionnaire. Results. Psychological factors (emotions, unresolved grief, communication, and negative judgments about suicide) complicate the nurse's assessment and treatment of suicidal patients. Some nurses ( ) indicated that euthanasia was never justified and 11 were unsure of justifications and evaluated each case on its merits. Justifications for euthanasia included poor symptom control, poor quality of life, incurable illness or permanent disability, terminal illness, and terminal illness with inadequate symptom control or impending death, patient autonomy, and clinical organ death. The nurses indicated some confusion and misconceptions about definitions and examples of euthanasia, assisted suicide, and double effect. Strategies for interdisciplinary clinical intervention are suggested to identify and resolve these psychosocial barriers. 1. Psychosocial Barriers to Suicide Risk Management Patients facing a life-threatening illness such as cancer have an increased risk of suicide, and this study examines the nurse’s psychosocial barriers to managing suicide risk. Nurses have a major role to play in patient safety when they recognize the warning signs, monitor the patient’s emotional state, provide a therapeutic relationship, and take precautions to prevent suicide. Although 70% of people warn providers of their suicidal impulses, clinicians often fail to take these warnings seriously [1]. Therapeutic intervention can often effectively help alleviate the pain, symptoms, or depression and reduce suicide risk. Psychosocial barriers such as the nurse’s emotions, beliefs, knowledge, or attitudes can impair risk management. This paper describes content analysis of oncology nurses’ narratives about psychosocial barriers in managing suicide risk. People with cancer have higher than average rates of suicide. Rates of suicide have been estimated to be as high as 31.4/100,000 person-years among people with cancer or AIDS. [2]. Misono et al. found an age-, sex-, and race-adjusted rate of 31.4/100,000 person-years which is almost twice the general suicide rate in the US which was
Primary CNS T-Cell Lymphoma: A Case Report on a Solitary Cerebellar Lesion and Review of Current Relevant Literature  [PDF]
Aden McLaughlin, Sharon Gabizon
Open Journal of Modern Neurosurgery (OJMN) , 2013, DOI: 10.4236/ojmn.2013.32004

Primary central nervous system lymphoma of T-cell lineage (PCNSTL) is an extremely rare entity, with relatively few cases reported in the literature. Presented here is a case of a 44-year-old, HIV negative woman found to have a solitary cerebellar lesion following presentation to the Emergency Department with a fall. The lesion responded to emergent dexamethasone and was followed with serial MRI imaging, which continued to show lesion regression. The lesion was shown to have recurred on MRI 14 months post-presentation and found to be T-cell lymphoma following immunophenotyping and TCR gene rearrangement studies of tissue specimen obtained via excisional biopsy.

Rural nurses’ perceptions of a volunteer program in an acute setting: Volunteers delivering person-centred care for patients with dementia and delirium  [PDF]
Kaye Ervin, Sharon Moore
Open Journal of Nursing (OJN) , 2014, DOI: 10.4236/ojn.2014.41005

Community volunteers were recruited and trained to deliver person-centred care to patients with dementia or delirium in an acute hospital setting, in a small rural Australian hospital. The volunteer program was grounded in action research methodology, and modelled on a previous research project. As a form of evaluation, interviews were conducted with nursing staff eight weeks after implementation of the volunteer program to explore their opinions. Data were analysed through a collaborative process and findings revealed strong benefits from the perspectives of the nursing staff. These benefits included overall improved patient care and improved time management for nursing tasks.

Farming Not Alone: Farmville Play and the Implications on Social Capital  [PDF]
Shaojung Sharon Wang
Social Networking (SN) , 2014, DOI: 10.4236/sn.2014.35028
Abstract: This study explored the relationship between Farmville play and social capital. The implications of social game play for players’ psychological wellness were also assessed. Using survey data collected from Farmville players in Taiwan, it was found that the intensity of Farmville play was positively associated with players’ perceived bridging and bonding social capital. The extent to which intensive Farmville play may lead to the psychological benefits of enhanced life satisfaction and reduced loneliness was discussed. In addition, players who tended to add unacquaintances were more likely to perform better than those who added people they knew. However, connecting with existing contacts through the game provides higher sense of bonding social capital. Implications on the concept of weak and strong ties were also discussed.
Coupled IEEE 802.11ac and TCP Goodput Improvement Using Aggregation and Reverse Direction  [PDF]
Oran Sharon, Yaron Alpert
Wireless Sensor Network (WSN) , 2016, DOI: 10.4236/wsn.2016.87011
Abstract: This paper suggests a new model for the transmission of Transmission Control Protocol (TCP) traffic over IEEE 802.11 using the new features of IEEE 802.11ac. The paper examines the first step in this direction and as such we first consider a single TCP connection, which is typical in a home environment. We show that when the IEEE 802.11ac MAC is aware of QoS TCP traffic, using Reverse Direction improves the TCP Goodput in tens of percentages compared to the traditional contention based channel access. In an error-free channel this improvement is 20% while in an error-prone channel the improvement reaches 60% also using blind retransmission of frames. In our operation modes we also assume the use in Two-Level aggregation scheme, the Automatic Repeat-Request (ARQ) protocol of the IEEE 802.11ac MAC layer, the data rates and the four Access Categories defined in this standard.
A New Aggregation Based Scheduling Method for Rapidly Changing IEEE 802.11ac Wireless Channels  [PDF]
Oran Sharon, Yaron Alpert
Wireless Sensor Network (WSN) , 2016, DOI: 10.4236/wsn.2016.88013
Abstract: In this paper we suggest a novel idea to improve the Throughput of a rapidly changing WiFi channel by exploiting the standard aggregation schemes in IEEE 802.11ac networks. The idea is based on blindly transmitting several copies of the first 4 MAC Protocol Data Units (MPDU) in the Transmission Window. This increases the probability that the window moves forward, enabling the transmission of new MPDUs and resulting in increased Throughput. It turns out that transmitting 2 copies of each of the first 4 MPDUs yields the best Throughput gain, in the order of 50% - 60% in PHY rates of 1.3 - 3.5 Gbps and few hundreds of bytes MPDUs. The proposed idea has advantage over Link Adaptation since it reduces the actual PHY rate only for the transmission of few MPDUs while Link Adaptation reduces the PHY rate for all the transmissions.
Single User MAC Level Throughput Comparision: IEEE 802.11ax vs. IEEE 802.11ac  [PDF]
Oran Sharon, Yaron Alpert
Wireless Sensor Network (WSN) , 2017, DOI: 10.4236/wsn.2017.95009
Abstract: With the ever-increasing range of video and audio applications in portable handheld devices, demand for high throughput in Wi-Fi networks is escalating. In this paper we introduce several novel features defined in next generation WLAN, termed as IEEE 802.11ax standard, and compare between the maximum throughputs received in IEEE 802.11ax and IEEE 802.11ac in a scenario where the AP continuously transmits to one station in the Single User mode. The comparison is done as a function of the modulation/coding schemes in use. In IEEE 802.11ax we consider two levels of frame aggregation. IEEE 802.11ax outperforms IEEE 802.11ac by about 29% and 48% in reliable and unreliable channels respectively.
Scheduling Strategies and Throughput Optimization for the Uplink for IEEE 802.11ax and IEEE 802.11ac Based Networks  [PDF]
Oran Sharon, Yaron Alpert
Wireless Sensor Network (WSN) , 2017, DOI: 10.4236/wsn.2017.98014
Abstract: The new IEEE 802.11 standard, IEEE 802.11ax, has the challenging goal of serving more Uplink (UL) traffic and users as compared with his predecessor IEEE 802.11ac, enabling consistent and reliable streams of data (average throughput) per station. In this paper we explore several new IEEE 802.11ax UL scheduling mechanisms and compare between the maximum throughputs of unidirectional UDP Multi Users (MU) triadic. The evaluation is conducted based on Multiple-Input-Multiple-Output (MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA) transmission multiplexing format in IEEE 802.11ax vs. the CSMA/CA MAC in IEEE 802.11ac in the Single User (SU) and MU modes for 1, 4, 8, 16, 32 and 64 stations scenario in reliable and unreliable channels. The comparison is conducted as a function of the Modulation and Coding Schemes (MCS) in use. In IEEE 802.11ax we consider two new flavors of acknowledgment operation settings, where the maximum acknowledgment windows are 64 or 256 respectively. In SU scenario the throughputs of IEEE 802.11ax are larger than those of IEEE 802.11ac by 64% and 85% in reliable and unreliable channels respectively. In MU-MIMO scenario the throughputs of IEEE 802.11ax are larger than those of IEEE 802.11ac by 263% and 270% in reliable and unreliable channels respectively. Also, as the number of stations increases, the advantage of IEEE 802.11ax in terms of the access delay also increases.
Scheduling Strategies and Throughput Optimization for the Downlink for IEEE 802.11ax and IEEE 802.11ac Based Networks  [PDF]
Oran Sharon, Yaron Alpert
Wireless Sensor Network (WSN) , 2017, DOI: 10.4236/wsn.2017.910020
The new IEEE 802.11ax standard is aimed to serve many users while enabling every station to transmit a consistent stream of data without interruption. In this paper we evaluate the upper bound on the throughput of a Downlink IEEE 802.11ax channel using the Single User (SU) mode and using the Multi User Multiple-Input-Multiple-Output (MU-MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA) mode. We compare between IEEE 802.11ax and IEEE 802.11ac for the case of 1, 4, 8, 16, 32 and 64 stations in different Modulation/Coding schemes (MCS) and different transmission windows’ sizes, 64 and 256 frames in IEEE 802.11ax. IEEE 802.11ax outperforms IEEE 802.11ac in the SU and MU modes by 52% and 74% in a reliable channel respectively, while in an unreliable channel the improvements are by 59% and 103% respectively. Also, in terms of the access delay, the advantage of IEEE 802.11ax increases as the number of stations increases.
Acolhimento familiar: validando e atribuindo sentido às leis protetivas
Valente, Jane;
Servi?o Social & Sociedade , 2012, DOI: 10.1590/S0101-66282012000300010
Abstract: in the context of the current brazilian legislation, which refers to children and adolescents in situations of vulnerability and risk, we will find a new service among the protective measures -provided: host service in welcoming family. given the unprecedented of this service as a public policy, this article aims to contribute to reflection about its execution in the country.
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